create flip_buffer if no driver_ops

call drmHandleEvent for drmModePageFlip

.gitignore

@@ -10,6 +10,7 @@ Makefile
 Makefile.in
 .deps/
 .libs/
+m4/*.m4
 /acinclude.m4
 /aclocal.m4
 /autom4te.cache
@@ -21,6 +22,7 @@ Makefile.in
 /depcomp
 /install-sh
 /libtool
+/ltmain.sh
 /*.pc
 /*config.h
 /*config.h.in
@@ -29,3 +31,6 @@ Makefile.in
 /src/font/utils/ucd/
 /src/sysres/font_list
 /src/sysres/license/dat_files/
+/configure~
+.cache
+compile_commands.json

Makefile.am

@@ -1,3 +1,5 @@
+ACLOCAL_AMFLAGS = -I m4
+
 SUBDIRS = src 3rd-party include rtos etc m4 cmake build
 
 EXTRA_DIST = minigui.pc.in \

RELEASE-NOTES.md

@@ -1,5 +1,17 @@
 # Release Notes
 
+- [Version 5.0.16](#version-5016)
+   + [What's new in version 5.0.16](#whats-new-in-version-5016)
+- [Version 5.0.15](#version-5015)
+   + [What's new in version 5.0.15](#whats-new-in-version-5015)
+- [Version 5.0.13](#version-5013)
+   + [What's new in version 5.0.13](#whats-new-in-version-5013)
+- [Version 5.0.12](#version-5012)
+   + [What's new in version 5.0.12](#whats-new-in-version-5012)
+- [Version 5.0.11](#version-5011)
+   + [What's new in version 5.0.11](#whats-new-in-version-5011)
+- [Version 5.0.10](#version-5010)
+   + [What's new in version 5.0.10](#whats-new-in-version-5010)
 - [Version 5.0.9](#version-508)
    + [What's new in version 5.0.9](#whats-new-in-version-508)
 - [Version 5.0.8](#version-508)
@@ -24,9 +36,119 @@
    + [Changes leading to incompatibility](#changes-leading-to-incompatibility)
    + [Deprecated APIs](#deprecated-apis)
 
+## Version 5.0.16
+
+On May 27, 2025, FMSoft announces the availability of MiniGUI 5.0.16,
+which is a bugfix release with some minor enhancements of MiniGUI 5.0.x.
+
+* BUGFIXING:
+   - The desktop thread can not handle the request from other threads as soon as possible.
+   - The `MSG_TIMEOUT` message can not be fired correctly under MiniGUI-Threads mode.
+   - Bad subpixel rendering when background color is RGBA0000.
+* TUNING:
+   - Tune `configure.ac` and `Makefile.am` to use the system libtool scripts.
+   - Do not check `pciaccess` if the target architecture is not `i386`.
+
+## Version 5.0.15
+
+On May 09, 2025, FMSoft announces the availability of MiniGUI 5.0.15,
+which is an enhancement release with some minor enhancements
+of MiniGUI 5.0.x.
+
+* ENHANCEMENTS:
+   - Optimize NEWGAL engines: `shadow`, `drm`, and `fbcon` for large resolution.
+   - New APIs: `GetWindowSharedSurfaceFD()` and `CreateMemDCFromSharedSurfaceFD()` for compositing schema.
+* CHANGES:
+   - The operations for DRM userland driver changed.
+
+## Version 5.0.13
+
+On Aug. 31, 2023, FMSoft announces the availability of MiniGUI 5.0.13,
+which is an enhancement release with some minor enhancements
+of MiniGUI 5.0.x.
+
+### What's new in version 5.0.13
+
+In this version, we made some enhancements:
+
+* ENHANCEMENTS:
+   - Disable BIDI for text in UTF-8 charset by default.
+* CHANGES:
+   - Add `BIDI_FLAG_NONE` and `BIDI_FLAG_LEGACY`.
+* BUGFIXING:
+   - Ignore C0CTRL characters when renerding text.
+   - Support for vowels.
+
+## Version 5.0.12
+
+On May 10, 2023, FMSoft announces the availability of MiniGUI 5.0.12,
+which is an enhancement release with some minor enhancements
+of MiniGUI 5.0.x.
+
+### What's new in version 5.0.12
+
+In this version, we made some enhancements:
+
+* ENHANCEMENTS:
+  - Add new API `GetACharsExtentPointEx()`.
+  - Add new APIs `GetTabbedACharsExtent()`, `GetTabbedACharsExtentPoint()`,
+    and `GetTabbedACharsExtentPointEx()`.
+  - Enhance two APIs `GetTextExtentPoint()` and `GetTabbedTextExtentPoint()`
+    to support BIDI charsets.
+  - Tune management of tick count.
+* BUGFIXING:
+   - Fix a typo: `Achar2UChar()` to `AChar2UChar()`.
+
+## Version 5.0.11
+
+On Dec. 31, 2022, FMSoft announces the availability of MiniGUI 5.0.11,
+which is a bug fixing release with bug fixes and some minor enhancements
+of MiniGUI 5.0.x.
+
+### What's new in version 5.0.11
+
+In this version, we made some enhancements
+
+* ENHANCEMENTS:
+* BUGFIXING:
+   - Fix a bug reported in https://github.com/VincentWei/minigui/issues/94
+   - Fix a bug reported in https://github.com/VincentWei/minigui/issues/96
+   - Fix a bug reported in https://github.com/VincentWei/minigui/issues/105
+   - Fix a bug reported in https://github.com/VincentWei/minigui/issues/106
+* OPTIMIZATIONS:
+   - Optimize the refresh of scrolled.
+* TUNING:
+   - Call `mg_FreeMsgQueueForThisThread` immediately in `TerminateGUI()`.
+   - Use `CreateLogFontEx` instead of `CreateLogFont` to follow the new style convention of font name when creating the system logfonts,
+     but the orientation is ignored for the system logfont.
+
+## Version 5.0.10
+
+On Sep. 30, 2022, FMSoft announces the availability of MiniGUI 5.0.10,
+which is a bug fixing release with bug fixes and some minor enhancements
+of MiniGUI 5.0.x.
+
+### What's new in version 5.0.10
+
+In this version, we made some enhancements
+
+* ENHANCEMENTS:
+   - Enhance `fbcon` engine to support double buffering for Threads and Standalone mode. (Runtime option: `fbcon.double_buffering`).
+   - Cleanup and enhance `shadow` engine to use `SyncUpdate` method.
+   - Relaying `MSG_IDLE` messages to the active descendant controls in every 0.5s.
+* BUGFIXING:
+   - Fix a bug reported in https://github.com/VincentWei/minigui/issues/83
+   - Fix a bug reported in https://github.com/VincentWei/minigui/issues/87
+   - Fix bugs reported in https://github.com/VincentWei/minigui/issues/89
+   - Fix some bugs when virtual window enabled under Standalone and Processes runtime modes.
+* OPTIMIZATIONS:
+* TUNING:
+   - Fix some warnings reported by GCC 12.
+   - Use inline functions for SetCursor and SetDefaultCursor instead of macros.
+
 ## Version 5.0.9
 
-On Jan. 14 2022, FMSoft announces the availability of MiniGUI 5.0.9,
+On Jan. 14, 2022, FMSoft announces the availability of MiniGUI 5.0.9,
 which is a bug fixing release with minor enhancements of MiniGUI 5.0.x.
 
 ### What's new in version 5.0.9

Version.md

@@ -1,4 +1,4 @@
-Version 5.0.9 (2022/01/14)
+Version 5.0.16 (2025/05/27)
 
 This is a minor enhancement and bugfix release of MiniGUI 5.0.x, the stable version.
 

autogen.sh

@@ -1,6 +1,7 @@
 #!/bin/sh
 
-cat m4/*.m4 > acinclude.m4
+libtoolize
+cat m4/*.m4 > aclocal.m4
 aclocal
 autoheader
 automake --add-missing --foreign --copy

etc/MiniGUI.cfg

@@ -55,6 +55,36 @@ wallpaper_pattern_size=full
 # def_compositor_so=
 #}}
 
+#{{ifdef _MGGAL_SHADOW
+[shadow]
+real_engine=pc_xvfb
+defaultmode=800x600-16bpp
+
+# `cw`: rotating screen clock-wise.
+# `ccw`: rotating screen counter clock-wise.
+# `hflip`: flipping screen horizontally.
+# `vflip`: flipping screen vertically.
+rotate_screen=ccw
+
+# Whether the async. update is enabled.
+# Use `true` or `yes` for enabled, anything else for disabled.
+# Since 5.0.13.
+async_update=yes
+
+# The synchronization interval for the asyn. updater (milli-seconds).
+# This setting is only valid when `async_update` is enabled and
+# the real engine does not provide WaitWBlank method.
+# Since 5.0.13.
+update_interval=15
+
+# The minimal pixels to use the hardware accelerator.
+# If the number of pixels to copy is less than this value,
+# MiniGUI will use the software copy routine to update the real screen,
+# even if the real device provides a hardware accelerator.
+# Since 5.0.13.
+min_pixels_using_hwaccl=4096
+#}}
+
 #{{ifdef _MGGAL_DRM
 [drm]
 defaultmode=1024x768-32bpp
@@ -78,9 +108,21 @@ dpi=96
 # Since 5.0.0.
 double_buffering=true
 
+# The update interval for the asyn. updater (milli-seconds).
+# This setting is only valid when drmWaitVBlank doesn't work correctly.
+# Since 5.0.13.
+update_interval=15
+
+# The minimal pixels to use the hardware accelerator.
+# If the number of pixels to copy is less than this value,
+# MiniGUI will use the software copy routine to update the real screen,
+# even if the device provides a hardware accelerator.
+# Since 5.0.13.
+min_pixels_using_hwaccl=4096
+
 # The filename of the shared library for the external driver.
 # The equivalent environment variable: MG_GAL_DRM_DRIVER
-exdriver=libhidrmdrivers-0.2.so.0
+exdriver=libdrmdrivers.so
 #}}
 
 #{{ifdef _MGIAL_SINGLETOUCHKEY
@@ -111,6 +153,16 @@ dpi=96
 # Note that under compositing schema, double buffering is always enabled.
 # Since 5.0.10.
 double_buffering=true
+
+# Whether the async. update is enabled.
+# Use `true` or `yes` for enabled, anything else for disabled.
+# Since 5.0.13.
+async_update=yes
+
+# The update interval for the asyn. updater (milli-seconds).
+# This setting is only valid when drmWaitVBlank doesn't work correctly.
+# Since 5.0.13.
+update_interval=15
 #}}
 
 #{{ifdef _MGGAL_PCXVFB
@@ -123,13 +175,6 @@ exec_file=/usr/local/bin/gvfb
 [rtos_xvfb]
 defaultmode=800x600-16bpp
 
-#{{ifdef _MGGAL_SHADOW
-[shadow]
-real_engine=pc_xvfb
-defaultmode=800x600-16bpp
-rotate_screen=normal
-#}}
-
 #{{ifdef _MGGAL_MLSHADOW
 [mlshadow]
 real_engine=qvfb

include/common.h

@@ -268,6 +268,8 @@ MGUI_COMPILE_TIME_ASSERT(sint64, sizeof(Sint64) == 8);
 #define MG_UNLIKELY(expr) (expr)
 #endif
 
+#define HAVE(FEATURE) (defined HAVE_##FEATURE && HAVE_##FEATURE)
+
     /**
      * \defgroup endian_info Endianness information
      * @{
@@ -311,6 +313,7 @@ MGUI_COMPILE_TIME_ASSERT(sint64, sizeof(Sint64) == 8);
         defined(__amd64) || \
         (defined(__alpha__) || defined(__alpha)) || \
         defined(__arm__) || defined(__aarch64__) || \
+        defined(__loongarch__) || \
         defined(__riscv) || \
         (defined(__CC_ARM) && !defined(__BIG_ENDIAN)) || \
         (defined(__mips__) && defined(__MIPSEL__)) || \
@@ -2346,6 +2349,7 @@ int init_minigui_printf (int (*output_char) (int ch),
 #define _ERR_PRINTF(fmt, ...)                   \
     do {                                        \
         TCS_RED (stderr);                       \
+        fprintf (stderr, "%s: ", __FUNCTION__); \
         fprintf (stderr, fmt, ##__VA_ARGS__);   \
         TCS_NONE (stderr);                      \
     } while (0)

include/customial.h

@@ -131,7 +131,31 @@
 #define IAL_EVENT_GESTURE_PINCH_UPDATE   0x0084
 #define IAL_EVENT_GESTURE_PINCH_END      0x0085
 
+#define TABLET_TOOL_CHANGED_X           (1 << 0)
+#define TABLET_TOOL_CHANGED_Y           (1 << 1)
+#define TABLET_TOOL_CHANGED_PRESSURE    (1 << 2)
+#define TABLET_TOOL_CHANGED_DISTANCE    (1 << 3)
+#define TABLET_TOOL_CHANGED_TILT_X      (1 << 4)
+#define TABLET_TOOL_CHANGED_TILT_Y      (1 << 5)
+#define TABLET_TOOL_CHANGED_ROTATION    (1 << 6)
+#define TABLET_TOOL_CHANGED_SLIDER      (1 << 7)
+#define TABLET_TOOL_CHANGED_SIZE_MAJOR  (1 << 8)
+#define TABLET_TOOL_CHANGED_SIZE_MINOR  (1 << 9)
+#define TABLET_TOOL_CHANGED_WHEEL       (1 << 10)
+
 #ifndef TABLET_TOOL_X
+    #define TABLET_TOOL_X                   0
+    #define TABLET_TOOL_Y                   1
+    #define TABLET_TOOL_PRESSURE            2
+    #define TABLET_TOOL_DISTANCE            3
+    #define TABLET_TOOL_TILT_X              4
+    #define TABLET_TOOL_TILT_Y              5
+    #define TABLET_TOOL_ROTATION            6
+    #define TABLET_TOOL_SLIDER              7
+    #define TABLET_TOOL_SIZE_MAJOR          8
+    #define TABLET_TOOL_SIZE_MINOR          9
+    #define TABLET_TOOL_WHEEL               10
+
     #define TABLET_TOOL_PROXIMITY_STATE_INVALID 0
     #define TABLET_TOOL_PROXIMITY_STATE_OUT     1
     #define TABLET_TOOL_PROXIMITY_STATE_IN      2
@@ -149,31 +173,6 @@
 
     #define TABLET_PAD_STRIP_SOURCE_UNKNOWN 0
     #define TABLET_PAD_STRIP_SOURCE_FINGER  1
-
-    #define TABLET_TOOL_CHANGED_X           (1 << 0)
-    #define TABLET_TOOL_CHANGED_Y           (1 << 1)
-    #define TABLET_TOOL_CHANGED_PRESSURE    (1 << 2)
-    #define TABLET_TOOL_CHANGED_DISTANCE    (1 << 3)
-    #define TABLET_TOOL_CHANGED_TILT_X      (1 << 4)
-    #define TABLET_TOOL_CHANGED_TILT_Y      (1 << 5)
-    #define TABLET_TOOL_CHANGED_ROTATION    (1 << 6)
-    #define TABLET_TOOL_CHANGED_SLIDER      (1 << 7)
-    #define TABLET_TOOL_CHANGED_SIZE_MAJOR  (1 << 8)
-    #define TABLET_TOOL_CHANGED_SIZE_MINOR  (1 << 9)
-    #define TABLET_TOOL_CHANGED_WHEEL       (1 << 10)
-
-    #define TABLET_TOOL_X                   0
-    #define TABLET_TOOL_Y                   1
-    #define TABLET_TOOL_PRESSURE            2
-    #define TABLET_TOOL_DISTANCE            3
-    #define TABLET_TOOL_TILT_X              4
-    #define TABLET_TOOL_TILT_Y              5
-    #define TABLET_TOOL_ROTATION            6
-    #define TABLET_TOOL_SLIDER              7
-    #define TABLET_TOOL_SIZE_MAJOR          8
-    #define TABLET_TOOL_SIZE_MINOR          9
-    #define TABLET_TOOL_WHEEL               10
-
 #endif
 
 #define IAL_EVENT_TABLET_TOOL_AXIS       0x0090

include/minigui.h

@@ -456,6 +456,45 @@ MG_EXPORT void GUIAPI MiniGUIPanic (int exitcode);
      * @{
      */
 
+/**
+ * \fn GHANDLE GUIAPI JoinLayerEx (const char* layer_name,
+                const char* client_name,
+                int max_nr_highers, int max_nr_normals, int *cli_id)
+ * \brief Joins to a layer and returns the client identifier if success.
+ *
+ * This function should be called by clients before calling any other MiniGUI
+ * functions. You can call \a GetLayerInfo to get the layer information.
+ * If the layer to be joined does not exist, the server, i.e. \a mginit, will
+ * try to create a new one. If you passed a NULL pointer or a null string for
+ * \a layer_name, the client will join to the default layer.
+ *
+ * If the client want to create a new layer, you should specify the maximal
+ * number of z-nodes in the higher level (max_nr_highers) and the maximal
+ * number of z-nodes in the normal level (max_nr_normals) of the new layer.
+ * Passing zero to \a max_nr_highers and max_nr_normals will use the default
+ * values, and the default values are specified by ServerStartup.
+ *
+ * Note that the server will create a default layer named "mginit".
+ *
+ * \param layer_name The name of the layer. You can use NAME_TOPMOST_LAYER to
+ *        specify the current topmost layer.
+ * \param client_name The name of the client.
+ * \param max_nr_highers The maximal number of z-nodes in the higher level of
+ *        the new layer.
+ * \param max_nr_normals The maximal number of z-nodes in the normal level of
+ *        the new layer.
+ * \param cli_id The pointer to a buffer of int to return the client identifier.
+ *
+ * \return The handle to the layer on success, INV_LAYER_HANDLE on error.
+ *
+ * \note Only call this function in clients of MiniGUI-Processes.
+ *
+ * \sa GetLayerInfo, ServerStartup, ServerCreateLayer
+ */
+MG_EXPORT GHANDLE GUIAPI JoinLayerEx (const char* layer_name,
+                const char* client_name,
+                int max_nr_highers, int max_nr_normals, int *cli_id);
+
 /**
  * \fn GHANDLE GUIAPI JoinLayer (const char* layer_name,
                 const char* client_name,
@@ -490,9 +529,30 @@ MG_EXPORT void GUIAPI MiniGUIPanic (int exitcode);
  *
  * \sa GetLayerInfo, ServerStartup, ServerCreateLayer
  */
-MG_EXPORT GHANDLE GUIAPI JoinLayer (const char* layer_name,
+static inline GHANDLE GUIAPI JoinLayer (const char* layer_name,
                 const char* client_name,
-                int max_nr_highers, int max_nr_normals);
+                int max_nr_highers, int max_nr_normals)
+{
+    return JoinLayerEx (layer_name, client_name,
+                max_nr_highers, max_nr_normals, NULL);
+}
+
+/**
+ * \fn int GUIAPI GetClientId (void)
+ * \brief Gets the client identifier.
+ *
+ * You can get the information of a layer through this function.
+ * The information will be returned through the pointer arguments
+ * if the specific pointer is not NULL.
+ *
+ * \return Returns the client identifier of the current process.
+ *      Note that the server always returns 0.
+ *
+ * \sa JoinLayerEx
+ *
+ * Since 5.2.0
+ */
+MG_EXPORT int GUIAPI GetClientId (void);
 
 /**
  * \fn GHANDLE GUIAPI GetLayerInfo (const char* layer_name,
@@ -2125,7 +2185,7 @@ MG_EXPORT int GUIAPI ServerSendReplyEx (int clifd,
  * \fn int GUIAPI ServerSendReply (int clifd, const void* reply, int len)
  * \brief Sends the reply to the client.
  *
- * This function sends a replay pointed to by \a reply which is
+ * This function sends a reply pointed to by \a reply which is
  * \a len bytes long to the client.
  *
  * \note Only used by the server to send the reply to the client.
@@ -2673,6 +2733,26 @@ MG_EXPORT void GUIAPI DesktopUpdateAllWindow (void);
 
 #define DUMMY_LAYER_HANDLE  (GHANDLE)(-1)
 
+/**
+ * \fn GHANDLE GUIAPI JoinLayerEx (const char* layer_name,
+                const char* client_name,
+                int max_nr_highers, int max_nr_normals, int *cli_fd)
+ * \brief The dummy replacement of the same function for MiniGUI-Processes.
+ *
+ * This function is a replacment of the same function for MiniGUI-Processes
+ * runtime mode. We provide this function for MiniGUI-Threads and
+ * MiniGUI-Standalone runtime modes, in order to avoid using the
+ * conditional compilation instructions in your source code.
+ *
+ * \return Always returns DUMMY_LAYER_HANDLE to indicate success.
+ */
+static inline GHANDLE GUIAPI JoinLayerEx (const char* layer_name,
+        const char* client_name,
+        int max_nr_highers, int max_nr_normals, int *cli_fd)
+{
+    return DUMMY_LAYER_HANDLE;
+}
+
 /**
  * \fn GHANDLE GUIAPI JoinLayer (const char* layer_name,
                 const char* client_name,
@@ -2687,7 +2767,8 @@ MG_EXPORT void GUIAPI DesktopUpdateAllWindow (void);
  * \return Always returns DUMMY_LAYER_HANDLE to indicate success.
  */
 static inline GHANDLE GUIAPI JoinLayer (const char* layer_name,
-        const char* client_name, int max_nr_highers, int max_nr_normals)
+        const char* client_name,
+        int max_nr_highers, int max_nr_normals)
 {
     return DUMMY_LAYER_HANDLE;
 }
@@ -4097,7 +4178,7 @@ static inline int GUIAPI ShowCursor (BOOL fShow) {
 #endif /* !_MGHAVE_CURSOR */
 
 /**
- * \def SetCursor(hcsr)
+ * \fn HCURSOR SetCursor(HCURSOR hcsr)
  * \brief Changes the current cursor.
  *
  * This function changes the current cursor to be \a hcsr.
@@ -4110,10 +4191,12 @@ static inline int GUIAPI ShowCursor (BOOL fShow) {
  *
  * \sa SetCursorEx, SetDefaultCursor
  */
-#define SetCursor(hcsr) SetCursorEx (hcsr, FALSE)
+static inline HCURSOR SetCursor(HCURSOR hcsr) {
+    return SetCursorEx (hcsr, FALSE);
+}
 
 /**
- * \def SetDefaultCursor(hcsr)
+ * \fn HCURSOR SetDefaultCursor(HCURSOR hcsr)
  * \brief Changes the current cursor, and set it as the default cursor.
  *
  * This function changes the current cursor to be \a hcsr, and set it as
@@ -4127,7 +4210,9 @@ static inline int GUIAPI ShowCursor (BOOL fShow) {
  *
  * \sa SetCursorEx, SetCursor
  */
-#define SetDefaultCursor(hcsr) SetCursorEx (hcsr, TRUE)
+static inline HCURSOR SetDefaultCursor(HCURSOR hcsr) {
+    return SetCursorEx (hcsr, TRUE);
+}
 
     /** @} end of cursor_fns */
 

include/window.h

@@ -2905,6 +2905,9 @@ typedef struct _WINMASKINFO {
  *
  * This message is sent to the all main windows when the system
  * enters idle loop.
+ *
+ * Since 5.0.10, this messasge will be relayed to the active child control
+ * if the main window is currently active.
  */
 #define MSG_IDLE            0x0142
 
@@ -2987,18 +2990,22 @@ typedef struct _WINMASKINFO {
    if the client moved to a new layer */
 #define MSG_LAYERCHANGED    0x0149
 
+/* Since 5.2.0; the server send this message to the client
+   if a window has been composited to the screen.  */
+#define MSG_WINCOMPOSITED   0x014A
+
 #endif /* defined _MGRM_PROCESSES */
 
 /* Since 5.0.0: for managing message thread */
-#define MSG_MANAGE_MSGTHREAD    0x014A
+#define MSG_MANAGE_MSGTHREAD    0x014B
     #define MSGTHREAD_SIGNIN        0x00
     #define MSGTHREAD_SIGNOUT       0x01
 
 /* Since 5.0.0: for calculating the default position */
-#define MSG_CALC_POSITION       0x014B
+#define MSG_CALC_POSITION       0x014C
 
 /* Since 5.0.6: for waking up the client */
-#define MSG_WAKEUP_CLIENT       0x014C
+#define MSG_WAKEUP_CLIENT       0x014D
 
 /**
  * \def MSG_DOESNEEDIME
@@ -7234,6 +7241,31 @@ MG_EXPORT BOOL GUIAPI SetMainWindowGestureFlags (HWND hWnd, DWORD dwFlags);
 
 #ifdef _MGSCHEMA_COMPOSITING
 
+/**
+ * \fn int GUIAPI GetWindowSharedSurfaceFD (HWND hwnd, size_t *map_size,
+ *      DWORD *flags)
+ * \brief Gets the file descriptor of the surface buffer for a window or
+ * the main window it locates.
+ *
+ * This function gets the file descriptor of the surface buffer for
+ * the specified window if it is a main window or the main window it locates.
+ * Note that if the window is a control that has the style `WS_EX_CTRLASMAINWIN`,
+ * the window will have a separate surface buffer.
+ *
+ * \param hwnd The handle to the window.
+ *
+ * \return An integer larger than or equal to 0 for a valid file descriptor,
+ *      otherwise a negative value.
+ *
+ * \note This function only available when _MGSCHEMA_COMPOSITING is defined.
+ *
+ * \sa CreateMemDCFromSharedSurfaceFD
+ *
+ * Since 5.0.13
+ */
+MG_EXPORT int GUIAPI GetWindowSharedSurfaceFD (HWND hWnd, size_t *map_size,
+        DWORD *flags);
+
 /**
  * \fn BOOL GUIAPI SetMainWindowCompositing (HWND hWnd,
         int type, DWORD arg)

m4/Makefile.am

@@ -1,4 +1,4 @@
 # This file does not do anything, except making sure these files are included
 # when you run 'make dist'.
 
-EXTRA_DIST = libtool.m4
+EXTRA_DIST = 

minigui.pc.in

@@ -2,11 +2,12 @@ prefix=@prefix@
 exec_prefix=@exec_prefix@
 libdir=@libdir@
 includedir=@includedir@
+runmode=@MINIGUI_RUNMODE@
+libsuffix=@MGLIB_SUFFIX@
 
 Name: MiniGUI
 Description: A mature cross-platform windowing and GUI system for embedded systems and IoT smart devices.
 Version: @MINIGUI_VERSION@
-Runmode: @MINIGUI_RUNMODE@
 Requires:
 Libs: -L${libdir} -lminigui_@MGLIB_SUFFIX@ @DEP_LIBS@
 Libs.private:

src/Makefile.am

@@ -1,10 +1,10 @@
-COMMON_SUBDIRS = libc misc main kernel sysres ial control ex_ctrl font gui mybmp include textedit
+COMMON_SUBDIRS = libc misc main kernel sysres ial control ex_ctrl font gui mybmp include textedit newgal newgdi
 
 COMMON_LADD =                   \
     libc/liblibc.la             \
     misc/libmisc.la             \
     control/libcontrol.la       \
-    ex_ctrl/libexctrl.la           \
+    ex_ctrl/libexctrl.la        \
     font/libfont.la             \
     font/in-core/libincore.la   \
     ial/libial.la               \
@@ -13,31 +13,15 @@ COMMON_LADD =                   \
     mybmp/libmybmp.la           \
     kernel/libkernel.la         \
     sysres/libsysres.la         \
-    textedit/libtextedit.la
+    textedit/libtextedit.la     \
+    newgal/libnewgal.la         \
+    newgdi/libnewgdi.la
 
-if MGRM_STANDALONE
-LITE_LADD = standalone/libstandalone.la
-LITE_SUBDIRS = standalone
-else
-if MGRM_PROCESSES
-LITE_LADD = server/libserver.la client/libclient.la
-LITE_SUBDIRS = server client
-else
-LITE_LADD = 
-LITE_SUBDIRS = 
-endif
-endif
-
-NEWGAL_LADD = newgal/libnewgal.la newgdi/libnewgdi.la
-NEWGAL_SUBDIRS = newgal newgdi
-
-DIST_SUBDIRS = $(COMMON_SUBDIRS) newgal newgdi server client standalone 
-SUBDIRS = $(COMMON_SUBDIRS) $(NEWGAL_SUBDIRS) $(LITE_SUBDIRS) 
+DIST_SUBDIRS = $(COMMON_SUBDIRS) newgal newgdi server client standalone
+SUBDIRS = $(COMMON_SUBDIRS) @RUNMODE_SUBDIRS@
 
 MGSOURCES = template.c template.h
-MGLIBADD =  $(COMMON_LADD)      \
-            $(LITE_LADD)        \
-            $(NEWGAL_LADD)
+MGLIBADD =  $(COMMON_LADD) @RUNMODE_LADD@
 MGLDFLAGS = -release $(LT_RELEASE) -version-info $(LT_CURRENT):$(LT_REVISION):$(LT_AGE)
 
 lib_LTLIBRARIES=libminigui_@MGLIB_SUFFIX@.la

src/client/client.c

@@ -184,6 +184,23 @@ static void process_socket_message (MSG *msg)
                 LOSWORD(msg->wParam), HISWORD(msg->wParam),
                 LOSWORD(msg->lParam), HISWORD(msg->lParam));
     }
+#ifdef _MGSCHEMA_COMPOSITING
+    else if (msg->message == MSG_WINCOMPOSITED) {
+        /* Since 5.2.0 */
+        int slot = (int)msg->wParam;
+        HWND hwnd = (HWND)msg->lParam;
+        unsigned dirty_age = (unsigned)msg->time;
+        if (__mg_client_check_znode_hwnd(slot, hwnd, __mg_client_id)) {
+            GAL_Surface *ssurf = ((PMAINWIN)hwnd)->surf;
+            assert(ssurf->shared_header);
+            __mg_lock_file_for_write(ssurf->fd);
+            if (ssurf->dirty_info->dirty_age == dirty_age) {
+                ssurf->dirty_info->nr_dirty_rcs = 0;
+            }
+            __mg_unlock_file_for_write(ssurf->fd);
+        }
+    }
+#endif
     else {
         if (msg->hwnd == HWND_NULL) {
             msg->hwnd = HWND_DESKTOP;
@@ -518,8 +535,8 @@ BOOL client_IdleHandler4Client (PMSGQUEUE msg_queue, BOOL wait)
     return (n > 0);
 }
 
-GHANDLE GUIAPI JoinLayer (const char* layer_name, const char* client_name,
-               int max_nr_topmosts, int max_nr_normals)
+GHANDLE GUIAPI JoinLayerEx (const char* layer_name, const char* client_name,
+               int max_nr_topmosts, int max_nr_normals, int *cli_id)
 {
     GHANDLE layer_handle = INV_LAYER_HANDLE;
     REQUEST req;
@@ -529,8 +546,12 @@ GHANDLE GUIAPI JoinLayer (const char* layer_name, const char* client_name,
     if (mgIsServer)
         return layer_handle;
 
-    if (__mg_client_id != 0) /* Already joined, return the handle */
+    if (__mg_client_id != 0) {
+        /* Already joined, return the handle */
+        if (cli_id)
+            *cli_id = __mg_client_id;
         return GetLayerInfo (NAME_SELF_LAYER, NULL, NULL, NULL);
+    }
 
     if (layer_name) {
         strncpy (info.layer_name, layer_name, LEN_LAYER_NAME);
@@ -593,10 +614,18 @@ GHANDLE GUIAPI JoinLayer (const char* layer_name, const char* client_name,
 
     __mg_start_client_desktop ();
 
+    if (cli_id)
+        *cli_id = __mg_client_id;
+
 ret:
     return layer_handle;
 }
 
+int GUIAPI GetClientId (void)
+{
+    return __mg_client_id;
+}
+
 GHANDLE GUIAPI GetLayerInfo (const char* layer_name,
                 int* nr_clients, BOOL* is_topmost, int* cli_active)
 {

src/control/button.c

@@ -299,7 +299,15 @@ static void change_status_from_pose (PCONTROL pctrl, int new_pose,
         }
     }
 
-    /*complete a click if the click if valid
+    /* DK: When the radio or check button state changes do not erase the background,
+     * and the prospects for direct rendering */
+    btnGetRects (pctrl, &rcClient, &rcContent, &rcBitmap);
+    if (BUTTON_IS_PUSHBTN(pctrl) || (pctrl->dwStyle & BS_PUSHLIKE))
+        InvalidateRect((HWND)pctrl, NULL, TRUE);
+    else
+        InvalidateRect((HWND)pctrl, &rcBitmap, FALSE);
+
+    /* complete a click if the click if valid
      * (mouse lbutton up in button )*/
     if (old_pose == BST_PUSHED && new_pose != BST_DISABLE
             && change_valid)
@@ -312,14 +320,6 @@ static void change_status_from_pose (PCONTROL pctrl, int new_pose,
 
         NotifyParent ((HWND)pctrl, pctrl->id, BN_CLICKED);
     }
-
-    /* DK: When the radio or check button state changes do not erase the background,
-     * and the prospects for direct rendering */
-    btnGetRects (pctrl, &rcClient, &rcContent, &rcBitmap);
-    if (BUTTON_IS_PUSHBTN(pctrl) || (pctrl->dwStyle & BS_PUSHLIKE))
-        InvalidateRect((HWND)pctrl, NULL, TRUE);
-    else
-        InvalidateRect((HWND)pctrl, &rcBitmap, FALSE);
 }
 
 /*btnGetRects:
@@ -423,8 +423,8 @@ static void draw_bitmap_button (PCONTROL pctrl, HDC hdc, DWORD dwStyle,
 
         GetClientRect ((HWND)pctrl, &prcClient);
         if (dwStyle & BS_REALSIZEIMAGE) {
-            x += (w - bmp->bmWidth) >> 1;
-            y += (h - bmp->bmHeight) >> 1;
+            x += (int)(w - bmp->bmWidth) >> 1;
+            y += (int)(h - bmp->bmHeight) >> 1;
             w = h = 0;
 
             if (bmp->bmWidth > RECTW(prcClient)){
@@ -847,8 +847,6 @@ static LRESULT ButtonCtrlProc (HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lPara
             break;
         }
 
-
-
         case BM_SETSTYLE:
             pctrl->dwStyle &= 0xFFFF0000;
             pctrl->dwStyle |= (DWORD)(wParam & 0x0000FFFF);
@@ -1054,7 +1052,7 @@ static LRESULT ButtonCtrlProc (HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lPara
         }
 
         default:
-        break;
+            break;
     }
 
     return DefaultControlProc (hWnd, uMsg, wParam, lParam);

src/control/edit.c

@@ -1678,7 +1678,7 @@ esright_input_char_refresh (HWND hWnd,
         scroll_rc.right = cur_caret_x;
 
         ScrollWindow(hWnd, -scroll_len, 0, &scroll_rc, NULL);
-        UpdateWindow(hWnd, FALSE);
+        UpdateInvalidClient(hWnd, TRUE);
         edtSetCaretPos (hWnd, sled);
 
         sled->changed = TRUE;
@@ -2143,9 +2143,6 @@ SLEditCtrlProc (HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
         else {
             chars = 1;
 
-            if (charBuffer [0] == 127) // BS
-                charBuffer [0] = '\b';
-
             if (dwStyle & ES_UPPERCASE) {
                 charBuffer [0] = toupper (charBuffer[0]);
             }
@@ -2154,12 +2151,8 @@ SLEditCtrlProc (HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
             }
         }
 
-        if (chars == 1) {
-            if (charBuffer [0] < 0x20 && charBuffer[0] != '\b') //FIXME
-                return 0;
-        }
-
-        if (charBuffer[0] == '\b') { //backspace
+        if (chars == 1 && (charBuffer[0] == '\b' || charBuffer[0] == 0x7F)) {
+            // ASCII BS or DEL
             int del;
 
             if (sled->editPos == 0 && sled->selStart == sled->selEnd)
@@ -2184,7 +2177,11 @@ SLEditCtrlProc (HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
                 sleInsertText (hWnd, sled, NULL, del);
             }
         }
-        else{
+        else if (chars == 1 && charBuffer [0] < 0x20) {
+            // ignore all other ASCII control characters.
+            return 0;
+        }
+        else {
             if (dwStyle & ES_LEFT) {
                 esleft_input_char_refresh(hWnd, sled, (char*)charBuffer, chars);
                 set_edit_caret_pos(hWnd, sled);

src/control/listmodel.c

@@ -404,7 +404,7 @@ void mglist_set_itemops (MgList *mglst, PMGITEMOPS iop)
     mglst->iop = *iop;
 }
 
-int DefaultItemViewProc (HWND hWnd, int message, WPARAM wParam, LPARAM lParam,
+LRESULT DefaultItemViewProc (HWND hWnd, int message, WPARAM wParam, LPARAM lParam,
                          PSCRDATA pscrdata, MgList *mglst)
 {
     switch (message) {

src/control/listmodel.h

@@ -140,7 +140,7 @@ struct _MgList
 
 /* ------------------------- external api -------------------------- */
 
-MG_EXPORT int DefaultItemViewProc (HWND hWnd, int message, WPARAM wParam, LPARAM lParam,
+MG_EXPORT LRESULT DefaultItemViewProc (HWND hWnd, int message, WPARAM wParam, LPARAM lParam,
                          PSCRDATA pscrdata, MgList *mglst);
 
 MG_EXPORT SVITEM_DRAWFUNC mglist_set_itemdraw (MgList *mglst, SVITEM_DRAWFUNC draw_func);

src/control/scrolled.c

@@ -172,6 +172,10 @@ BOOL scrolled_set_cont_pos (HWND hWnd, PSCRDATA pscrdata, int cont_x, int cont_y
         SetScrollPos (hWnd, SB_VERT, cont_y);
         bChange = TRUE;
     }
+
+    if (bChange)
+        UpdateInvalidClient(hWnd, FALSE);
+
     return bChange;
 }
 
@@ -585,7 +589,7 @@ int scrolled_init (HWND hWnd, PSCRDATA pscrdata, int w, int h)
     return 0;
 }
 
-int DefaultScrolledProc (HWND hWnd, int message, WPARAM wParam, LPARAM lParam)
+LRESULT DefaultScrolledProc (HWND hWnd, int message, WPARAM wParam, LPARAM lParam)
 {
     PSCRDATA pscrdata = NULL;
 

src/control/scrolled.h

@@ -96,7 +96,7 @@ typedef struct _scrdata
 typedef SCRDATA *PSCRDATA;
 
 
-MG_EXPORT int     DefaultScrolledProc (HWND hWnd, int message, WPARAM wParam, LPARAM lParam);
+MG_EXPORT LRESULT DefaultScrolledProc (HWND hWnd, int message, WPARAM wParam, LPARAM lParam);
 MG_EXPORT int     scrolled_init (HWND hWnd, PSCRDATA pscrdata, int w, int h);
 MG_EXPORT void    scrolled_destroy (PSCRDATA pscrdata);
 MG_EXPORT void    scrolled_hscroll (HWND hWnd, PSCRDATA pscrdata, WPARAM wParam, LPARAM lParam);

src/control/scrollview.c

@@ -15,7 +15,7 @@
  *   and Graphics User Interface (GUI) support system for embedded systems
  *   and smart IoT devices.
  *
- *   Copyright (C) 2002~2018, Beijing FMSoft Technologies Co., Ltd.
+ *   Copyright (C) 2002~2022, Beijing FMSoft Technologies Co., Ltd.
  *   Copyright (C) 1998~2002, WEI Yongming
  *
  *   This program is free software: you can redistribute it and/or modify
@@ -493,10 +493,15 @@ LRESULT ScrollViewCtrlProc (HWND hWnd, UINT message, WPARAM wParam, LPARAM lPara
         break;
     }
 
-    case MSG_DESTROY:
-        scrollview_destroy (psvdata);
-        free (psvdata);
+    case MSG_DESTROY: {
+        /* suppress a warning about calling free() before using the pointer */
+        PSVDATA svdata = (PSVDATA) GetWindowAdditionalData2 (hWnd);
+        if (svdata) {
+            scrollview_destroy(svdata);
+            free (svdata);
+        }
         break;
+    }
 
     case MSG_GETDLGCODE:
         return DLGC_WANTARROWS;

src/control/textedit.c

@@ -2096,7 +2096,6 @@ static void teOnChar (HWND hWnd, PTEDATA ptedata, WPARAM wParam)
             rcInv.right = ptedata->svdata.scrdata.nContWidth;
             rcInv.bottom = rcInv.top + ptedata->nLineHeight - ptedata->nLineBaseH;
             REFRESH_NODE_EX(node, &rcInv);
-           // UpdateWindow(hWnd, FALSE);
 
             newlinenr = NODE_LINENR(node);
             rcInv.left = 0;
@@ -2104,12 +2103,10 @@ static void teOnChar (HWND hWnd, PTEDATA ptedata, WPARAM wParam)
                 rcInv.top += ptedata->nLineHeight;
                 rcInv.bottom = rcInv.top + ptedata->nLineHeight  - ptedata->nLineBaseH;
                 REFRESH_NODE_EX(node, &rcInv);
-             //   UpdateWindow(hWnd, FALSE);
             }
             /* houhh 20090814, UpdataWindow will invalidate all edit area, but
              * erase area is not same with msg_paint area.*/
-            UpdateWindow(hWnd, FALSE);
-            //SendMessage(hWnd, MSG_PAINT, 0, 0);
+            UpdateInvalidClient(hWnd, TRUE);
         }
     }
     else {

src/ex_ctrl/coolbar.c

@@ -15,7 +15,7 @@
  *   and Graphics User Interface (GUI) support system for embedded systems
  *   and smart IoT devices.
  *
- *   Copyright (C) 2002~2018, Beijing FMSoft Technologies Co., Ltd.
+ *   Copyright (C) 2002~2022, Beijing FMSoft Technologies Co., Ltd.
  *   Copyright (C) 1998~2002, WEI Yongming
  *
  *   This program is free software: you can redistribute it and/or modify
@@ -283,7 +283,7 @@ static void DrawCoolBox (HWND hWnd, HDC hdc, PCOOLBARCTRL pdata)
             WINDOWINFO *info;
             RECT rc;
 
-            if (tmpdata->Caption == NULL || tmpdata->Caption [0] == '\0')
+            if (tmpdata->Caption [0] == '\0')
                 break;
 
             GetTextExtent (hdc, tmpdata->Caption, -1, &size);

src/ex_ctrl/gridview.c

@@ -80,17 +80,17 @@ static void update_viewport (gvGridViewData *view, int from, int to, int is_row)
 {
     RECT r;
 
-    GetClientRect (view->hCtrl, &r);
+    GetClientRect(view->hCtrl, &r);
 
     if (is_row) {
         r.top = from;
-        ScrollWindow (view->hCtrl, 0, to, &r, NULL);
+        ScrollWindow(view->hCtrl, 0, to, &r, NULL);
     }
     else {
         r.left = from;
-        ScrollWindow (view->hCtrl, to, 0, &r, NULL);
+        ScrollWindow(view->hCtrl, to, 0, &r, NULL);
     }
-    UpdateWindow(view->hCtrl, FALSE);
+    UpdateInvalidClient(view->hCtrl, FALSE);
 }
 
 // scroll function {{{

src/ex_ctrl/iconview.c

@@ -157,6 +157,8 @@ static int isInItem (MgList *mglst, int mouseX, int mouseY,
 
     index = row * pivlist->nCol + col;
     pci = (IconviewItem *)mglist_getitem_byindex (mglst, index);
+    if (pci == NULL)
+        return -1;
 
     if (pRet)
         *pRet = (MgItem*)pci;

src/ex_ctrl/treeview.c

@@ -93,14 +93,15 @@ BOOL RegisterTreeViewControl (void)
     const WINDOW_ELEMENT_RENDERER * rdr =
         GetDefaultWindowElementRenderer();
 
-
-    if (!(icon_fold = (HICON)RetrieveRes(gui_GetIconFile(rdr->name, SYSICON_FOLD, szValue)))) {
+    if (!(icon_fold = (HICON)RetrieveRes(gui_GetIconFile(rdr->name,
+                        SYSICON_FOLD, szValue)))) {
         if (!(icon_fold = LoadSystemIcon (SYSICON_FOLD, 0))) {
             return FALSE;
         }
     }
 
-    if (!(icon_unfold = (HICON)RetrieveRes(gui_GetIconFile(rdr->name, SYSICON_UNFOLD, szValue)))) {
+    if (!(icon_unfold = (HICON)RetrieveRes(gui_GetIconFile(rdr->name,
+                        SYSICON_UNFOLD, szValue)))) {
         if (!(icon_unfold = LoadSystemIcon (SYSICON_UNFOLD, 0))) {
             DestroyIcon (icon_fold);
             icon_fold = 0;
@@ -180,6 +181,7 @@ static BOOL tvInitTVData (HWND hwnd, PTVDATA pData, DWORD dwStyle, PTVITEMINFO r
             tvRoot->hIconFold = root_ii->hIconFold;
         else
             tvRoot->hIconFold = ICON_FOLD;
+
         if (root_ii && root_ii->hIconUnfold)
             tvRoot->hIconUnfold = root_ii->hIconUnfold;
         else
@@ -632,22 +634,13 @@ static void tvDrawItem (HWND hWnd, HDC hdc, PTVDATA pData, int centerX, int cent
     centerX += (h>>1) + TV_BOXGAP;
 
     if (pData->dwStyle & TVS_WITHICON) {
-        if (!(pData->dwStyle & TVS_ICONFORSELECT)
-                && (!p->child || (p->dwFlags & TVIF_FOLD))) {
+        if (p->child != NULL && (p->dwFlags & TVIF_FOLD)) {
             if ((p->hIconFold)) {
-                DrawIcon (hdc, centerX, centerY - (h>>1),
-                        h, h, p->hIconFold);
-            }
-        } else if ((pData->dwStyle & TVS_ICONFORSELECT) && p->dwFlags & TVIF_SELECTED) {
-            if ((p->hIconFold)) {
-                DrawIcon (hdc, centerX, centerY - (h>>1),
-                        h, h, p->hIconFold);
-            }
-        } else
-            if ((p->hIconUnfold)) {
-                DrawIcon (hdc, centerX, centerY - (h>>1),
-                        h, h, p->hIconUnfold);
+                DrawIcon (hdc, centerX,  centerY - (h>>1), h, h, p->hIconFold);
             }
+        } else if ((p->hIconUnfold)) {
+            DrawIcon (hdc, centerX, centerY - (h>>1), h, h, p->hIconUnfold);
+        }
         centerX += h + TV_ICONGAP;
     }
 

src/font/bitmapfont.c

@@ -202,6 +202,17 @@ static void destroy (GLYPHTREENODE *root)
 
 /*** device font ops ***/
 
+static DWORD get_feature (LOGFONT* logfont, DEVFONT* devfont,
+        enum devfont_feature feature)
+{
+    switch (feature) {
+    case DEVFONT_FEATURE_MARK_BBOX:
+        return 0;
+    }
+
+    return 0;
+}
+
 static DWORD get_glyph_bmptype (LOGFONT* logfont, DEVFONT* devfont)
 {
     return DEVFONTGLYPHTYPE_PRERDRBMP;
@@ -380,6 +391,7 @@ static int get_glyph_bbox (LOGFONT* logfont, DEVFONT* devfont,
 
 /**************************** Global data ************************************/
 FONTOPS __mg_bitmap_font_ops = {
+    get_feature,
     get_glyph_bmptype,
     get_ave_width,
     get_max_width,

src/font/charset-arabic.c

@@ -15,7 +15,7 @@
  *   and Graphics User Interface (GUI) support system for embedded systems
  *   and smart IoT devices.
  *
- *   Copyright (C) 2002~2018, Beijing FMSoft Technologies Co., Ltd.
+ *   Copyright (C) 2002~2023, Beijing FMSoft Technologies Co., Ltd.
  *   Copyright (C) 1998~2002, WEI Yongming
  *
  *   This program is free software: you can redistribute it and/or modify
@@ -226,7 +226,7 @@ static int iso8859_6_conv_from_uc32 (Uchar32 wc, unsigned char* mchar)
 }
 #endif
 
-/* must attetion the para s is arabic chv value.*/
+#if 0
 static int is_arabic_char_vowel(Uint8 c)
 {
 
@@ -240,6 +240,7 @@ static int is_arabic_char_vowel(Uint8 c)
     */
     return 0;
 }
+#endif
 
 /* ISO8859-6 charset vowel relative define and judge */
 #define ISARABIC_VOWEL(s) ((s >= FATHATAN) && (s <= SUKUN))
@@ -461,15 +462,18 @@ static int iso8859_6_len_first_char (const unsigned char* mstr, int len)
         return 2;
     else if (ignore == 2)
         return 3;
-    else
-        return 1;
 
+    return 1;
 }
 
 #define ISARABIC_LIG_HALF(s) ((s == 0xa5) || (s == 0xa6))
 
 static unsigned int iso8859_6_char_type (Achar32 chv)
 {
+    chv = REAL_ACHAR(chv);
+#if 1
+    return sb_char_type(chv);
+#else
     unsigned int ch_type = ACHAR_BASIC_UNKNOWN;
 
     if (is_arabic_char_vowel (chv)) {  /* is vowel */
@@ -480,10 +484,10 @@ static unsigned int iso8859_6_char_type (Achar32 chv)
     }
 
     return ch_type;
+#endif
 }
 
 static BidiType __mg_iso8859_6_bidi_char_type_map[] = {
-#if 0
     /*0x00~0x0f*/
     BIDI_TYPE_BN,  BIDI_TYPE_BN,  BIDI_TYPE_BN,  BIDI_TYPE_BN,
     BIDI_TYPE_BN,  BIDI_TYPE_BN,  BIDI_TYPE_BN,  BIDI_TYPE_BN,
@@ -531,7 +535,6 @@ static BidiType __mg_iso8859_6_bidi_char_type_map[] = {
     BIDI_TYPE_LTR, BIDI_TYPE_LTR, BIDI_TYPE_LTR, BIDI_TYPE_LTR,
     BIDI_TYPE_LTR, BIDI_TYPE_LTR, BIDI_TYPE_LTR, BIDI_TYPE_ON,
     BIDI_TYPE_ON,  BIDI_TYPE_ON,  BIDI_TYPE_ON,  BIDI_TYPE_BN,
-#endif
 
     /*0x80~0x8f*/
     BIDI_TYPE_ON,  BIDI_TYPE_AL,  BIDI_TYPE_AL,  BIDI_TYPE_AL,
@@ -606,10 +609,9 @@ static BidiType __mg_iso8859_6_bidi_char_type_map[] = {
 static BidiType iso8859_6_bidi_char_type (Achar32 chv)
 {
     chv = REAL_ACHAR(chv);
-    if (chv > 0x7F)
-        return (BidiType)__mg_iso8859_6_bidi_char_type_map[chv - 0x80];
-    else
-        return (BidiType)__mg_iso8859_1_bidi_char_type_map[chv];
+    assert(chv < TABLESIZE(__mg_iso8859_6_bidi_char_type_map));
+
+    return (BidiType)__mg_iso8859_6_bidi_char_type_map[chv];
 }
 
 static int get_table_index(Uint8 c)
@@ -796,7 +798,7 @@ static const unsigned char* iso8859_6_get_next_word (const unsigned char* mstr,
 static Achar32 iso8859_6_get_shaped_char_value (const unsigned char* cur_mchar,
         int cur_len, int shape_type)
 {
-    Achar32 chv = -1;
+    Achar32 chv = INV_ACHAR_VALUE;
     int ignore;
     int index;
 
@@ -811,15 +813,14 @@ static Achar32 iso8859_6_get_shaped_char_value (const unsigned char* cur_mchar,
         }
     }
 
-    if (chv == -1 || chv == 0) {
+    if (chv == INV_ACHAR_VALUE || chv == 0) {
         if (ISARABIC_VOWEL(*cur_mchar)){
             chv = fontset_68x_get_vowel_char(*cur_mchar);
         }
 
-        if (chv == 0 || chv == -1) {
+        if (chv == 0 || chv == INV_ACHAR_VALUE) {
             index = get_table_index(*cur_mchar);
-            if (index >=0)
-            {
+            if (index >=0 ) {
                 switch (shape_type) {
                     case ACHAR_ISOLATED:
                         chv = shape_info[index].isolated;
@@ -841,7 +842,7 @@ static Achar32 iso8859_6_get_shaped_char_value (const unsigned char* cur_mchar,
     }
 
     if (chv == 0)
-        chv =-1;
+        chv = INV_ACHAR_VALUE;
 
     return chv;
 }
@@ -862,6 +863,7 @@ static const BIDICHAR_MIRROR_MAP __mg_iso8859_68x_mirror_table [] =
 
 static BOOL iso8859_6_bidi_mirror_char (Achar32 chv, Achar32* mirrored)
 {
+    chv = REAL_ACHAR(chv);
     return get_mirror_char (__mg_iso8859_68x_mirror_table,
             TABLESIZE (__mg_iso8859_68x_mirror_table), chv, mirrored);
 }
@@ -871,6 +873,7 @@ static CHARSETOPS CharsetOps_iso8859_6 = {
     3,
     FONT_CHARSET_ISO8859_6,
     0,
+    1,
     iso8859_6_len_first_char,
     iso8859_6_get_char_value,
     iso8859_6_get_shaped_char_value,

src/font/charset-unicode.c

@@ -15,7 +15,7 @@
  *   and Graphics User Interface (GUI) support system for embedded systems
  *   and smart IoT devices.
  *
- *   Copyright (C) 2002~2018, Beijing FMSoft Technologies Co., Ltd.
+ *   Copyright (C) 2002~2023, Beijing FMSoft Technologies Co., Ltd.
  *   Copyright (C) 1998~2002, WEI Yongming
  *
  *   This program is free software: you can redistribute it and/or modify
@@ -210,6 +210,8 @@ static unsigned int unicode_char_type (Achar32 chv)
         mchar_type = ACHAR_BASIC_LF;
     else if (break_type == UCHAR_BREAK_SPACE)
         mchar_type = ACHAR_BASIC_SPACE;
+    else if (basic_type == UCHAR_CATEGORY_NON_SPACING_MARK)
+        mchar_type = ACHAR_BASIC_VOWEL;
     else if (chv != 0x00AD && ISZEROWIDTHTYPE (basic_type))
         mchar_type = ACHAR_BASIC_ZEROWIDTH;
     else if ((chv >= 0x1160 && chv < 0x1200)
@@ -239,10 +241,36 @@ static const BidiType linear_enum_to_bidi_type[] = {
 #undef _UNIBIDI_ADD_TYPE
 };
 
+/* Since 5.0.13: this function only returns BidiType which
+   is recognizable by the legacy BIDI algorithm. */
 static BidiType unicode_bidi_char_type(Achar32 ch)
 {
     ch = REAL_ACHAR(ch);
-    return linear_enum_to_bidi_type[UNIBIDI_GET_BIDI_TYPE(ch)];
+    BidiType bt = linear_enum_to_bidi_type[UNIBIDI_GET_BIDI_TYPE(ch)];
+
+    switch (bt) {
+        case BIDI_TYPE_LTR:
+        case BIDI_TYPE_RTL:
+        case BIDI_TYPE_AL:
+        case BIDI_TYPE_EN:
+        case BIDI_TYPE_AN:
+        case BIDI_TYPE_ET:
+        case BIDI_TYPE_CS:
+        case BIDI_TYPE_NSM:
+        case BIDI_TYPE_BN:
+        case BIDI_TYPE_BS:
+        case BIDI_TYPE_SS:
+        case BIDI_TYPE_WS:
+        case BIDI_TYPE_ON:
+        case BIDI_TYPE_SOT:
+        case BIDI_TYPE_EOT:
+            return bt;
+        default:
+            _DBG_PRINTF("Not recognizable for char (0x%04x): %u\n", ch, bt);
+            break;
+    }
+
+    return BIDI_TYPE_WS;
 }
 
 BidiType GUIAPI UCharGetBidiType(Uchar32 uc)
@@ -628,6 +656,7 @@ CHARSETOPS __mg_CharsetOps_utf8 = {
     6,
     FONT_CHARSET_UTF8,
     0,
+    0,
     utf8_len_first_char,
     utf8_get_char_value,
     NULL,
@@ -854,6 +883,7 @@ CHARSETOPS __mg_CharsetOps_utf16le = {
     4,
     FONT_CHARSET_UTF16LE,
     0,
+    0,
     utf16le_len_first_char,
     utf16le_get_char_value,
     NULL,
@@ -1080,6 +1110,7 @@ CHARSETOPS __mg_CharsetOps_utf16be = {
     4,
     FONT_CHARSET_UTF16BE,
     0,
+    0,
     utf16be_len_first_char,
     utf16be_get_char_value,
     NULL,

src/font/freetype1.c

@@ -255,6 +255,17 @@ compute_kernval (TTFINSTANCEINFO* ttf_inst_info)
     return kernval;
 }
 
+static DWORD get_feature (LOGFONT* logfont, DEVFONT* devfont,
+        enum devfont_feature feature)
+{
+    switch (feature) {
+    case DEVFONT_FEATURE_MARK_BBOX:
+        return 0;
+    }
+
+    return 0;
+}
+
 static DWORD get_glyph_bmptype (LOGFONT* logfont, DEVFONT* devfont)
 {
     if (logfont->style & FS_WEIGHT_BOOK)
@@ -792,6 +803,7 @@ static int is_rotatable (LOGFONT* logfont, DEVFONT* devfont, int rot_desired)
 }
 /**************************** Global data ************************************/
 FONTOPS __mg_ttf_ops = {
+    get_feature,
     get_glyph_bmptype,
     get_ave_width,
     get_max_width,

src/font/freetype2.c

@@ -197,6 +197,17 @@ print_bitmap_grey (const BYTE* buffer, int width, int rows, int pitch)
     printf("*******************************************\n");
 }
 
+static DWORD get_feature (LOGFONT* logfont, DEVFONT* devfont,
+        enum devfont_feature feature)
+{
+    switch (feature) {
+    case DEVFONT_FEATURE_MARK_BBOX:
+        return 1;
+    }
+
+    return 0;
+}
+
 static DWORD get_glyph_bmptype (LOGFONT* logfont, DEVFONT* devfont)
 {
     switch (logfont->style & FS_RENDER_MASK) {
@@ -1265,6 +1276,7 @@ void font_TermFreetypeLibrary (void)
 
 /**************************** Global data ************************************/
 FONTOPS __mg_ttf_ops = {
+    get_feature,
     get_glyph_bmptype,
     get_ave_width,
     get_max_width,

src/font/legacy-bidi.c

@@ -703,21 +703,20 @@ void __mg_legacy_bidi_get_embeddlevels (const CHARSETOPS* charset_ops,
     print_hexstr(achars, len, TRUE);
 }
 
-#if 0
 static void bidi_map_reverse (void* context, int len, int pos)
 {
-    GLYPHMAPINFO* str = (GLYPHMAPINFO*)context + pos;
+    ACHARMAPINFO* str = (ACHARMAPINFO*)context + pos;
     int i;
     for (i = 0; i < len / 2; i++)
     {
-        GLYPHMAPINFO tmp = str[i];
+        ACHARMAPINFO tmp = str[i];
         str[i] = str[len - 1 - i];
         str[len - 1 - i] = tmp;
     }
 }
 
 Achar32* __mg_legacy_bidi_map_reorder (const CHARSETOPS* charset_ops,
-        Achar32* achars, int len, GLYPHMAPINFO* map, int pel)
+        Achar32* achars, int len, int pel, ACHARMAPINFO* map)
 {
     BYTE max_level = 1;
     TYPERUN *type_rl_list = NULL;
@@ -725,6 +724,7 @@ Achar32* __mg_legacy_bidi_map_reorder (const CHARSETOPS* charset_ops,
     int i;
     int run_pos;
     int run_len;
+    REORDER_CONTEXT rc;
 
     print_hexstr(achars, len, FALSE);
 
@@ -735,14 +735,15 @@ Achar32* __mg_legacy_bidi_map_reorder (const CHARSETOPS* charset_ops,
         run_pos = node_p->pos;
         run_len = node_p->len;
 
-        for (i=0; i<run_len; i++)
-        {
+        for (i=0; i<run_len; i++) {
             (map+run_pos+i)->is_rtol = (node_p)->level & 1;
         }
     }
 
-    bidi_reorder_cb(map, len, &type_rl_list, max_level,
-            bidi_map_reverse);
+    rc.achars = NULL;
+    rc.extra = map;
+    rc.cb = bidi_map_reverse;
+    bidi_reorder(&rc, len, &type_rl_list, max_level);
 
     /* free typerun list.*/
     free_typerun_list(type_rl_list);
@@ -752,18 +753,23 @@ Achar32* __mg_legacy_bidi_map_reorder (const CHARSETOPS* charset_ops,
     return achars;
 }
 
+#if 0
 Achar32* __mg_legacy_bidi_index_reorder (const CHARSETOPS* charset_ops,
         Achar32* achars, int len, int* index_map, int pel)
 {
     BYTE max_level = 1;
     TYPERUN *type_rl_list = NULL;
+    REORDER_CONTEXT rc;
 
     print_hexstr(achars, len, FALSE);
 
     /* W1~W7, N1~N2, I1~I2, Get the Embedding Level. */
     bidi_resolve_string (charset_ops, achars, len, pel, &type_rl_list, &max_level);
 
-    bidi_reorder_cb(index_map, len, &type_rl_list, max_level,
+    rc.achars = achars;
+    rc.extra = extra;
+    rc.cb = cb_reverse_extra;
+    bidi_reorder(index_map, len, &type_rl_list, max_level,
             bidi_string_reverse);
 
     /* free typerun list.*/

src/font/nullfont.c

@@ -66,6 +66,17 @@
 #define NUF_WIDTH   8
 #define NUF_HEIGHT  1
 
+static DWORD get_feature (LOGFONT* logfont, DEVFONT* devfont,
+        enum devfont_feature feature)
+{
+    switch (feature) {
+    case DEVFONT_FEATURE_MARK_BBOX:
+        return 0;
+    }
+
+    return 0;
+}
+
 static DWORD get_glyph_bmptype (LOGFONT* logfont, DEVFONT* devfont)
 {
     return DEVFONTGLYPHTYPE_MONOBMP;
@@ -171,6 +182,7 @@ static void unload_font_data (DEVFONT* devfont, void* data)
 }
 
 FONTOPS __mg_null_font_ops = {
+    get_feature,
     get_glyph_bmptype,
     get_ave_width,
     get_max_width,

src/font/qpf.c

@@ -287,6 +287,17 @@ static unsigned char def_smooth_bitmap [] =
 static QPF_GLYPH def_glyph = {&def_metrics, def_bitmap};
 static QPF_GLYPH def_smooth_glyph = {&def_smooth_metrics, def_smooth_bitmap};
 
+static DWORD get_feature (LOGFONT* logfont, DEVFONT* devfont,
+        enum devfont_feature feature)
+{
+    switch (feature) {
+    case DEVFONT_FEATURE_MARK_BBOX:
+        return 0;
+    }
+
+    return 0;
+}
+
 static DWORD get_glyph_bmptype (LOGFONT* logfont, DEVFONT* devfont)
 {
     if (QPFONT_INFO_P (devfont)->fm->flags & FLAG_MODE_SMOOTH)
@@ -541,6 +552,7 @@ static int is_rotatable (LOGFONT* logfont, DEVFONT* devfont, int rot_desired)
 
 /**************************** Global data ************************************/
 FONTOPS __mg_qpf_ops = {
+    get_feature,
     get_glyph_bmptype,
     get_ave_width,
     get_max_width,

src/font/rawbitmap.c

@@ -151,6 +151,17 @@ static void unload_font_data (DEVFONT* devfont, void* data)
 
 /*************** Raw bitmap font operations *********************************/
 
+static DWORD get_feature (LOGFONT* logfont, DEVFONT* devfont,
+        enum devfont_feature feature)
+{
+    switch (feature) {
+    case DEVFONT_FEATURE_MARK_BBOX:
+        return 0;
+    }
+
+    return 0;
+}
+
 static DWORD get_glyph_bmptype (LOGFONT* logfont, DEVFONT* devfont)
 {
     return DEVFONTGLYPHTYPE_MONOBMP;
@@ -280,6 +291,7 @@ static int is_rotatable (LOGFONT* logfont, DEVFONT* devfont, int rot_desired)
 
 /**************************** Global data ************************************/
 FONTOPS __mg_rbf_ops = {
+    get_feature,
     get_glyph_bmptype,
     get_ave_width,
     get_ave_width,  // max_width same as ave_width

src/font/scripteasy.c

@@ -377,6 +377,17 @@ static int get_max_width (LOGFONT* logfont, DEVFONT* devfont)
     return logfont->size;
 }
 
+static DWORD get_feature (LOGFONT* logfont, DEVFONT* devfont,
+        enum devfont_feature feature)
+{
+    switch (feature) {
+    case DEVFONT_FEATURE_MARK_BBOX:
+        return 0;
+    }
+
+    return 0;
+}
+
 static DWORD get_glyph_bmptype (LOGFONT* logfont, DEVFONT* devfont)
 {
     if (logfont->style & FS_WEIGHT_BOOK)
@@ -598,6 +609,7 @@ static int is_rotatable (LOGFONT* logfont, DEVFONT* devfont, int rot_desired)
 
 /**************************** Global data ************************************/
 static FONTOPS scripteasy_font_ops = {
+    get_feature,
     get_glyph_bmptype,
     get_ave_width,
     get_max_width,

src/font/sysfont.c

@@ -155,7 +155,10 @@ BOOL mg_InitSysFont (void)
                 goto error_load;
             }
 
-            if ((sys_fonts[i] = CreateLogFont (type, family, charset,
+            /* VW 20221003: use CreateLogFontEx instead of CreateLogFont to
+               follow the new style convention of font name,
+               but the orientation is ignored for the system logfont. */
+            if ((sys_fonts[i] = CreateLogFontEx (type, family, charset,
                     style [0], style [1], style [2],
                     style [3], style [4], style [5],
                     height, 0)) == NULL) {

src/font/unicode-break.c

@@ -377,8 +377,8 @@ static _GBType resolve_gbt(struct break_ctxt* ctxt,
                 uc == 0x8E2 || uc == 0xD4E || uc == 0x110BD ||
                 (uc >= 0x111C2 && uc <= 0x111C3)) {
             gbt = GB_Prepend;
-            break;
         }
+        break;
 
     case UCHAR_CATEGORY_CONTROL:
     case UCHAR_CATEGORY_LINE_SEPARATOR:
@@ -393,8 +393,8 @@ static _GBType resolve_gbt(struct break_ctxt* ctxt,
         if ((uc >= 0xFFF0 && uc <= 0xFFF8) ||
                 (uc >= 0xE0000 && uc <= 0xE0FFF)) {
             gbt = GB_ControlCRLF;
-            break;
         }
+        break;
 
     case UCHAR_CATEGORY_OTHER_LETTER:
         if (ctxt->makes_hangul_syllable)
@@ -434,7 +434,6 @@ static _GBType resolve_gbt(struct break_ctxt* ctxt,
                 gbt = GB_RI_Odd;
             else
                 gbt = GB_RI_Odd;
-            break;
         }
         break;
 

src/font/upf.c

@@ -148,6 +148,17 @@ static void unload_font_data (DEVFONT* devfont, void* data)
     free (((UPFINFO*) data));
 }
 
+static DWORD get_feature (LOGFONT* logfont, DEVFONT* devfont,
+        enum devfont_feature feature)
+{
+    switch (feature) {
+    case DEVFONT_FEATURE_MARK_BBOX:
+        return 0;
+    }
+
+    return 0;
+}
+
 static DWORD get_glyph_bmptype (LOGFONT* logfont, DEVFONT* devfont)
 {
     Uint8* p_upf = (Uint8 *)UPFONT_INFO_P (devfont)->root_dir;
@@ -525,6 +536,7 @@ static int is_rotatable (LOGFONT* logfont, DEVFONT* devfont, int rot_desired)
 }
 
 FONTOPS __mg_upf_ops = {
+    get_feature,
     get_glyph_bmptype,
     get_ave_width,
     get_max_width,

src/font/varbitmap.c

@@ -109,6 +109,17 @@ typedef struct _FONT_PROPT {
     int def_glyph;
 } FONT_PROPT;
 
+static DWORD get_feature (LOGFONT* logfont, DEVFONT* devfont,
+        enum devfont_feature feature)
+{
+    switch (feature) {
+    case DEVFONT_FEATURE_MARK_BBOX:
+        return 0;
+    }
+
+    return 0;
+}
+
 static DWORD get_glyph_bmptype (LOGFONT* logfont, DEVFONT* devfont)
 {
     return DEVFONTGLYPHTYPE_MONOBMP;
@@ -477,6 +488,7 @@ static void unload_font_data (DEVFONT* devfont, void* data)
 }
 
 FONTOPS __mg_vbf_ops = {
+    get_feature,
     get_glyph_bmptype,
     get_ave_width,
     get_max_width,

src/gui/accelkey.c

@@ -59,7 +59,6 @@
 #include "cliprect.h"
 #include "gal.h"
 #include "internals.h"
-#include "blockheap.h"
 #include "accelkey.h"
 
 static BLOCKHEAP ACHeap;

src/gui/caret.c

@@ -59,17 +59,22 @@
 #include "cliprect.h"
 #include "gal.h"
 #include "internals.h"
+#include "dc.h"
 
 BOOL GUIAPI CreateCaret (HWND hWnd, PBITMAP pBitmap, int nWidth, int nHeight)
 {
     PMAINWIN pWin;
-
     pWin = (PMAINWIN)hWnd;
 
     if (!pWin->pCaretInfo) {
+        HDC hdc;
+
         if (!(pWin->pCaretInfo = malloc (sizeof (CARETINFO))))
             return FALSE;
 
+        /* Since 5.0.11: use client DC of the window instead of screen DC */
+        hdc = GetClientDC(hWnd);
+
         pWin->pCaretInfo->pBitmap = pBitmap;
         if (pBitmap) {
             nWidth  = pBitmap->bmWidth;
@@ -78,18 +83,22 @@ BOOL GUIAPI CreateCaret (HWND hWnd, PBITMAP pBitmap, int nWidth, int nHeight)
         pWin->pCaretInfo->nWidth  = nWidth;
         pWin->pCaretInfo->nHeight = nHeight;
         pWin->pCaretInfo->caret_bmp.bmType = BMP_TYPE_NORMAL;
-        pWin->pCaretInfo->caret_bmp.bmBitsPerPixel = BITSPERPHYPIXEL;
-        pWin->pCaretInfo->caret_bmp.bmBytesPerPixel = BYTESPERPHYPIXEL;
+        pWin->pCaretInfo->caret_bmp.bmBitsPerPixel =
+            GetGDCapability(hdc, GDCAP_BITSPP);
+        pWin->pCaretInfo->caret_bmp.bmBytesPerPixel =
+            GetGDCapability(hdc, GDCAP_BPP);
         pWin->pCaretInfo->caret_bmp.bmWidth = nWidth;
         pWin->pCaretInfo->caret_bmp.bmHeight = nHeight;
         pWin->pCaretInfo->caret_bmp.bmAlphaMask = NULL;
         pWin->pCaretInfo->caret_bmp.bmAlphaPitch = 0;
 
-        pWin->pCaretInfo->nBytesNr = GAL_GetBoxSize (__gal_screen,
+        pWin->pCaretInfo->nBytesNr = GAL_GetBoxSize (dc_HDC2PDC(hdc)->surface,
                         nWidth, nHeight, &pWin->pCaretInfo->caret_bmp.bmPitch);
         pWin->pCaretInfo->pNormal = malloc (pWin->pCaretInfo->nBytesNr);
         pWin->pCaretInfo->pXored  = malloc (pWin->pCaretInfo->nBytesNr);
 
+        ReleaseDC(hdc);
+
         if (pWin->pCaretInfo->pNormal == NULL ||
             pWin->pCaretInfo->pXored == NULL) {
             free (pWin->pCaretInfo);
@@ -219,8 +228,8 @@ void GetCaretBitmaps (PCARETINFO pCaretInfo)
     int i;
     int sx, sy;
     HDC hdc;
+    Uint32 amask;
 
-    // convert to screen coordinates
     sx = pCaretInfo->x;
     sy = pCaretInfo->y;
 
@@ -231,36 +240,68 @@ void GetCaretBitmaps (PCARETINFO pCaretInfo)
                     pCaretInfo->caret_bmp.bmWidth,
                     pCaretInfo->caret_bmp.bmHeight,
                     &pCaretInfo->caret_bmp);
+    amask = GetGDCapability(hdc, GDCAP_AMASK);
     ReleaseDC (hdc);
 
     // generate XOR bitmap.
-    if (pCaretInfo->pBitmap) {
+    if (amask == 0) {
         BYTE* normal;
         BYTE* bitmap;
         BYTE* xored;
 
         normal = pCaretInfo->pNormal;
-        bitmap = pCaretInfo->pBitmap->bmBits;
         xored  = pCaretInfo->pXored;
 
-        for (i = 0; i < pCaretInfo->nBytesNr; i++)
-            xored[i] = normal[i] ^ bitmap[i];
+        if (pCaretInfo->pBitmap) {
+            bitmap = pCaretInfo->pBitmap->bmBits;
+            for (i = 0; i < pCaretInfo->nBytesNr; i++)
+                xored[i] = normal[i] ^ bitmap[i];
+        }
+        else {
+            for (i = 0; i < pCaretInfo->nBytesNr; i++)
+                xored[i] = normal[i] ^ 0xFF;
+        }
     }
     else {
+        // Since 5.0.11: restore the alpha component if having alpha component.
+        int x, y;
         BYTE* normal;
         BYTE* xored;
-        BYTE xor_byte;
+        BYTE* bitmap = NULL;
+        gal_pixel pix_normal, pix_bitmap, pix_xored, bits_alpha;
 
-        if (BITSPERPHYPIXEL < 8)
-            xor_byte = 0x0F;
-        else
-            xor_byte = 0xFF;
+        for (y = 0; y < pCaretInfo->caret_bmp.bmHeight; y++) {
+            normal = pCaretInfo->pNormal + pCaretInfo->caret_bmp.bmPitch * y;
+            xored  = pCaretInfo->pXored  + pCaretInfo->caret_bmp.bmPitch * y;
+            if (pCaretInfo->pBitmap)
+                bitmap = pCaretInfo->pBitmap->bmBits +
+                    pCaretInfo->caret_bmp.bmPitch * y;
 
-        normal = pCaretInfo->pNormal;
-        xored  = pCaretInfo->pXored;
+            for (x = 0; x < pCaretInfo->caret_bmp.bmWidth; x++) {
 
-        for (i = 0; i < pCaretInfo->nBytesNr; i++)
-            xored[i] = normal[i] ^ xor_byte;
+                pix_normal = _mem_get_pixel(normal,
+                        pCaretInfo->caret_bmp.bmBytesPerPixel);
+                if (pCaretInfo->pBitmap) {
+                    pix_bitmap = _mem_get_pixel(bitmap,
+                            pCaretInfo->caret_bmp.bmBytesPerPixel);
+                }
+                else {
+                    pix_bitmap = 0xFFFFFFFF;
+                }
+
+                bits_alpha = pix_normal & amask;
+                pix_xored = pix_normal ^ pix_bitmap;
+                pix_xored &= ~amask;
+                pix_xored |= bits_alpha;
+                _mem_set_pixel(xored,
+                        pCaretInfo->caret_bmp.bmBytesPerPixel, pix_xored);
+
+                normal += pCaretInfo->caret_bmp.bmBytesPerPixel;
+                xored  += pCaretInfo->caret_bmp.bmBytesPerPixel;
+                if (pCaretInfo->pBitmap)
+                    bitmap += pCaretInfo->caret_bmp.bmBytesPerPixel;
+            }
+        }
     }
 }
 

src/gui/lf_manager.c

@@ -15,7 +15,7 @@
  *   and Graphics User Interface (GUI) support system for embedded systems
  *   and smart IoT devices.
  *
- *   Copyright (C) 2002~2018, Beijing FMSoft Technologies Co., Ltd.
+ *   Copyright (C) 2002~2022, Beijing FMSoft Technologies Co., Ltd.
  *   Copyright (C) 1998~2002, WEI Yongming
  *
  *   This program is free software: you can redistribute it and/or modify
@@ -803,7 +803,7 @@ BOOL GUIAPI InitWindowElementAttrs (PWERENDERER rdr)
     char buff [20];
     DWORD rgba;
 
-    if (!rdr || !rdr->name || rdr->name[0] == '\0')
+    if (!rdr || rdr->name[0] == '\0')
         return FALSE;
 
     _DBG_PRINTF ("GUI>InitWEA: Initialize %s renderer window element attributes.\n",

src/gui/menu.c

@@ -71,7 +71,6 @@
 #include "cliprect.h"
 #include "gal.h"
 #include "internals.h"
-#include "blockheap.h"
 #include "menu.h"
 
 #define SHORTEN 0
@@ -2186,7 +2185,7 @@ static int create_memdc_for_menu (TRACKMENUINFO* ptmi)
         return -1;
     }
 
-    ptmi->dc = CreateMemDCFromSurface (surf);
+    ptmi->dc = __mg_create_memdc_for_surface (surf);
     if (ptmi->dc == HDC_INVALID) {
         GAL_FreeSurface (surf);
         return -1;

src/ial/pcxvfbial.c

@@ -319,6 +319,19 @@ static void flush_rec (void)
 #endif
 }
 
+static void close_rec (void)
+{
+#ifdef WIN32
+    /* TODO: */
+#else
+    if (record_fd >= 0) {
+        close(record_fd);
+        record_fd = -1;
+    }
+#endif
+}
+
+
 
 static void do_record(AUTO_IAL_INPUT_EVENT *event)
 {
@@ -744,6 +757,7 @@ void TermPCXVFBInput (void)
         remove("/tmp/.pcxvfb_tmp");
     }
 #endif
+    close_rec();
 #endif /* WIN32 */
 }
 

src/include/Makefile.am

@@ -3,7 +3,7 @@ noinst_HEADERS = \
     cursor.h dc.h event.h list.h element.h \
     ial.h inline.h internals.h zorder.h menu.h misc.h \
     msgstr.h sysfont.h timer.h devfont.h fontname.h \
-    readbmp.h icon.h blockheap.h rbtree.h \
+    readbmp.h icon.h rbtree.h \
     ourhdr.h client.h server.h sharedres.h sockio.h drawsemop.h \
     gal.h newgal.h memops.h incoreres.h sysres.h clipboard.h \
     glyph.h license.h mgsock.h unicode-ops.h \

src/include/bidi.h

@@ -112,11 +112,11 @@ void __mg_legacy_bidi_get_embeddlevels (const CHARSETOPS* charset_ops,
 Uint32 __mg_legacy_bidi_str_base_dir (const CHARSETOPS* charset_ops,
         Achar32* achars, int len);
 
+Achar32* __mg_legacy_bidi_map_reorder (const CHARSETOPS* charset_ops,
+        Achar32* achars, int len, int pel, ACHARMAPINFO* map);
+
 #if 0
 // Deprecated
-Achar32* __mg_legacy_bidi_map_reorder (const CHARSETOPS* charset_ops,
-        Achar32* achars, int len, GLYPHMAPINFO* map, int pel);
-
 Achar32* __mg_legacy_bidi_index_reorder (const CHARSETOPS* charset_ops,
         Achar32* achars, int len, int* index_map, int pel);
 #endif

src/include/bitmap.h

@@ -70,7 +70,6 @@ struct _SCALER_INFO_FILLBMP
 typedef struct {
     struct _SCALER_INFO_FILLBMP scaler_info;
     GAL_Rect dst_rect;
-    int old_bkmode;
 
     BYTE* decoded_buff;
     BYTE* decoded_alpha_buff;

src/include/blockheap.h.deprecated

@@ -47,6 +47,8 @@
 ** blockheap.h: the head file of heap for block data.
 **
 ** Create date: 2001/01/10
+**
+** DEPRECATED, USE window.h INSTEAD.
 */
 
 #ifndef GUI_BLOCKHEAP_H
@@ -55,7 +57,7 @@
 #ifndef _MGUI_GDI_H /* included in include/gdi.h */
 
 struct _BLOCKHEAP {
-#ifdef _MGRM_THREADS
+#ifdef _MGHAVE_VIRTUAL_WINDOW
     pthread_mutex_t lock;
 #endif
     /* Size of one block element. */

src/include/client.h

@@ -105,6 +105,10 @@
 #define REQID_GETSHAREDSURFACE      0x001C
     // for compositing schema
     #define SYSSF_WALLPAPER_PATTER      "syssf-wallpaper-pattern"
+    #define APPSF_NAME_PREFIX           "appsf-name-"
+    #define APPSF_NAME_PATTER           "appsf-name-%s"
+    #define APPSF_HWND_PREFIX           "appsf-hwnd-"
+    #define APPSF_HWND_PATTER           "appsf-hwnd-%d-%p"
     // for sharedfb schema
     #define SYSSF_REAL_SCREEN           "syssf-real-screen"
     #define SYSSF_SHADOW_SCREEN         "syssf-shadow-screen"
@@ -113,10 +117,22 @@
 #define REQID_LOADCURSOR_PNG        0x001D
 // Load cursor from in-memory PNG
 #define REQID_LOADCURSOR_PNG_MEM    0x001E
+
+#if 0 // Deprecated since 5.2.0
 // allocate semaphore for shared surface
 #define REQID_ALLOC_SURF_SEM        0x001F
 // free semaphore of shared surface
 #define REQID_FREE_SURF_SEM         0x0020
+#endif
+
+/* Since 5.2.0 */
+// Operate a shared surface to register/revoke the name and set the fd
+#define REQID_OPERATENAMEDSSURF     0x001F
+    #define ID_NAMEDSSURFOP_REGISTER    1
+    #define ID_NAMEDSSURFOP_SET         2
+    #define ID_NAMEDSSURFOP_REVOKE      3
+
+#define REQID_RESERVED              0x0020
 
 // Move the current client to another layer
 #define REQID_MOVETOLAYER           0x0021
@@ -142,15 +158,23 @@ MGUI_COMPILE_TIME_ASSERT(sys_request_id, MAX_SYS_REQID >= REQID_SYS_LAST);
 
 #undef MGUI_COMPILE_TIME_ASSERT
 
+/* Since 5.2.0 */
+typedef struct OperateNSSurfInfo
+{
+    int     id_op;
+    char    name[NAME_MAX + 1];
+    size_t  map_size;
+} OPERATENSSURFINFO;
+
 /* Since 5.0.0 */
 typedef struct _SharedSurfInfo {
+    size_t      size;       // whole size of the surface
+    off_t       offset;     // offset of pixel data
     uint32_t    flags;      // the flags of the surface
     uint32_t    width, height;
     uint32_t    pitch;
     uint32_t    name;       // when use flink name
     uint32_t    drm_format; // DRM pixel format
-    size_t      size;       // whole size of the surface
-    off_t       offset;     // offset of pixel data
 } SHAREDSURFINFO;
 
 typedef struct JoinLayerInfo {
@@ -359,6 +383,7 @@ void __mg_start_client_desktop (void);
 
 void __mg_update_window (HWND hwnd, int left, int top, int right, int bottom);
 
+BOOL __mg_client_check_znode_hwnd (int slot, HWND hwnd, int cli);
 BOOL __mg_client_check_hwnd (HWND hwnd, int cli);
 BOOL __mg_client_on_layer_changed (GHANDLE layer_handle, int zi_shmid);
 

src/include/dc.h

@@ -167,6 +167,8 @@ struct tagDC
     /* surface of this DC */
     GAL_Surface* surface;
 
+    char __first_attr[0];   // just a zero-length field for the first attribute
+
     /* background color */
     gal_pixel bkcolor;
 
@@ -179,7 +181,7 @@ struct tagDC
     /* text color */
     gal_pixel textcolor;
 
-    int bkmode;
+    int bkmode_set; /* the background mode set by user (5.0.12, Issue #107) */
 
     int tabstop;
     int cExtra;     /* Character extra */
@@ -213,6 +215,8 @@ struct tagDC
     size_t dash_list_len;
 #endif
 
+    char __last_attr[0];   // just a zero-length field for the last attribute
+
     PLOGFONT pLogFont;
 
     POINT CurPenPos;
@@ -247,6 +251,7 @@ struct tagDC
     gal_pixel   skip_pixel;
     gal_pixel   cur_pixel;
     int         step;
+    int         bkmode;     /* the effective background mode */
     /* ====================================================================== */
 
     CLIPRECT* cur_ban;
@@ -516,14 +521,16 @@ static inline void _dc_step_y (PDC pdc, int step)
 
 #       define BLOCK_DRAW_SEM(pdc)                                  \
 do {                                                                \
-    if (pdc->surface->shared_header)                                \
-        LOCK_SURFACE_SEM (pdc->surface->shared_header->sem_num);    \
+    if (pdc->surface->shared_header) {                              \
+        __mg_lock_file_for_write(pdc->surface->fd);                 \
+    }                                                               \
 } while (0)
 
 #       define UNBLOCK_DRAW_SEM(pdc)                                \
 do {                                                                \
-    if (pdc->surface->shared_header)                                \
-        UNLOCK_SURFACE_SEM (pdc->surface->shared_header->sem_num);  \
+    if (pdc->surface->shared_header) {                              \
+        __mg_unlock_file_for_write(pdc->surface->fd);               \
+    }                                                               \
 } while (0)
 
 #       define IS_SCREEN_SURFACE(pdc)                       \

src/include/devfont.h

@@ -15,7 +15,7 @@
  *   and Graphics User Interface (GUI) support system for embedded systems
  *   and smart IoT devices.
  *
- *   Copyright (C) 2002~2018, Beijing FMSoft Technologies Co., Ltd.
+ *   Copyright (C) 2002~2023, Beijing FMSoft Technologies Co., Ltd.
  *   Copyright (C) 1998~2002, WEI Yongming
  *
  *   This program is free software: you can redistribute it and/or modify
@@ -209,6 +209,9 @@ struct _CHARSETOPS
     /** Default character. */
     Achar32 def_char_value;
 
+    /** Whether using legacy BIDI algorithm (Since 5.0.13). */
+    unsigned legacy_bidi:1;
+
     /** The method to get the length of the first character. */
     int (*len_first_char) (const unsigned char* mstr, int mstrlen);
 
@@ -263,9 +266,17 @@ struct _CHARSETOPS
 
 #define DEVFONTGLYPHTYPE_MASK_BMPTYPE   0x0F
 
+enum devfont_feature {
+    DEVFONT_FEATURE_MARK_BBOX = 0,
+};
+
 /** The font operation structure. */
 struct _FONTOPS
 {
+    /** The method to get the feature value of the font (Since 5.0.13). */
+    DWORD (*get_feature) (LOGFONT* logfont, DEVFONT* devfont,
+            enum devfont_feature feature);
+
     /** The method to get the glyph bitmap type . */
     DWORD (*get_glyph_bmptype) (LOGFONT* logfont, DEVFONT* devfont);
 

src/include/drawsemop.h

@@ -51,12 +51,10 @@
 #ifndef GUI_DRAWSEMOP_H
     #define GUI_DRAWSEMOP_H
 
-#ifdef __cplusplus
-extern "C" {
-#endif  /* __cplusplus */
-
 #include <errno.h>
 
+#include "misc.h"
+
 static inline void my_sem_op (int semid, int num, int op)
 {
     struct sembuf sb;
@@ -70,6 +68,9 @@ again:
         if (errno == EINTR) {
             goto again;
         }
+        else {
+            _ERR_PRINTF("Failed semop: %m\n");
+        }
     }
 }
 
@@ -79,10 +80,7 @@ again:
 #define LOCK_SCREEN_SEM()   my_sem_op(SHAREDRES_SEMID, _IDX_SEM_SCR, -1)
 #define UNLOCK_SCREEN_SEM() my_sem_op(SHAREDRES_SEMID, _IDX_SEM_SCR, 1)
 
-#ifdef _MGSCHEMA_COMPOSITING
-#   define LOCK_SURFACE_SEM(num)    my_sem_op(SHAREDRES_SEMID_SHARED_SURF, num, -1)
-#   define UNLOCK_SURFACE_SEM(num)  my_sem_op(SHAREDRES_SEMID_SHARED_SURF, num, 1)
-#endif
+extern int __mg_client_id;
 
 #ifdef _MGHAVE_CURSOR
 
@@ -157,6 +155,10 @@ again:
 #   define UNLOCK_MOUSEMOVE_SEM()   my_sem_op(SHAREDRES_SEMID, _IDX_SEM_MOUSEMOVE, 1)
 #endif /* _MGRM_PROCESSES */
 
+#ifdef __cplusplus
+extern "C" {
+#endif  /* __cplusplus */
+
 #ifdef __cplusplus
 }
 #endif  /* __cplusplus */

src/include/event.h

@@ -127,6 +127,9 @@ typedef LWEVENT* PLWEVENT;
 extern "C" {
 #endif  /* __cplusplus */
 
+extern DWORD __mg_timeout_usec;
+extern DWORD __mg_repeat_usec;
+
 // The entrance of low level event handling thread
 BOOL mg_InitLWEvent (void);
 void mg_TerminateLWEvent (void);

src/include/internals.h

@@ -84,15 +84,18 @@
 #define WS_EX_MODALDISABLED     0x10000000L
 
 /*
- * \def WS_EX_CTRLASMAINWIN
- * \brief The control can be displayed out of the main window
- *        which contains the control.
+ * Internal extended style:
+ *  The control can be displayed out of the main window
+ *  which contains the control.
  */
 #define WS_EX_CTRLASMAINWIN     0x20000000L
 
-/* Internal extended style. */
+/* Internal extended style: dialog box. */
 #define WS_EX_DIALOGBOX         0x40000000L
 
+/* Internal extended style: activated. */
+#define WS_EX_ACTIVATED         0x80000000L
+
 /* Make sure the internal window extended styles above are ok */
 #define MGUI_COMPILE_TIME_ASSERT(name, x)               \
        typedef int MGUI_dummy_ ## name[((x)?1:0) * 2 - 1]
@@ -101,6 +104,10 @@ MGUI_COMPILE_TIME_ASSERT(ws_ex_int_1,
         WS_EX_INTERNAL_MASK & WS_EX_MODALDISABLED);
 MGUI_COMPILE_TIME_ASSERT(ws_ex_int_2,
         WS_EX_INTERNAL_MASK & WS_EX_CTRLASMAINWIN);
+MGUI_COMPILE_TIME_ASSERT(ws_ex_int_3,
+        WS_EX_INTERNAL_MASK & WS_EX_DIALOGBOX);
+MGUI_COMPILE_TIME_ASSERT(ws_ex_int_4,
+        WS_EX_INTERNAL_MASK & WS_EX_ACTIVATED);
 
 #undef MGUI_COMPILE_TIME_ASSERT
 
@@ -251,7 +258,7 @@ struct _MSGQUEUE
     int loop_depth;             // message loop depth, for dialog boxes
 
     int idle_counter;           // the idle connter for MSG_IDLE
-    DWORD last_ticks_desktop;   // the last tick count for desktop timer
+    DWORD last_ticks;           // the last tick count saved; since 5.0.14
 
     /* Since 5.0.0, MiniGUI provides support for timers per message thread */
     int nr_timers;              // the number of active timers
@@ -772,8 +779,8 @@ static inline PMSGQUEUE getMsgQueue (HWND hWnd)
 }
 
 
-MSGQUEUE* mg_AllocMsgQueueForThisThread (void);
-void mg_FreeMsgQueueForThisThread (void);
+MSGQUEUE* mg_AllocMsgQueueForThisThread (BOOL sign_in);
+void mg_FreeMsgQueueForThisThread (BOOL sign_off);
 
 /* Since 5.0.0 */
 int __mg_throw_away_messages (PMSGQUEUE pMsgQueue, HWND hWnd);
@@ -904,40 +911,9 @@ static inline MSGQUEUE* getMsgQueueIfMainWindowInThisThread (PMAINWIN pMainWin)
 
 #endif  /* defined _MGHAVE_VIRTUAL_WINDOW */
 
-#if 0   /* deprecated code */
-/* since 5.0.0, we always use QS_DESKTIMER for desktop timer */
-/* since 5.0.0, we no longer use the timer thread */
-static inline void AlertDesktopTimerEvent (void)
-{
-    if (__mg_dsk_msg_queue) {
-        __mg_dsk_msg_queue->expired_timer_mask = 1;
-        POST_MSGQ (__mg_dsk_msg_queue);
-    }
-}
-
-static inline void AlertDesktopTimerEvent (void)
-{
-    __mg_dsk_msg_queue->dwState |= QS_DESKTIMER;
-#ifdef _MGHAVE_VIRTUAL_WINDOW
-    if (getMsgQueueForThisThread() != __mg_dsk_msg_queue)
-        POST_MSGQ (__mg_dsk_msg_queue);
-#endif  /* defined _MGHAVE_VIRTUAL_WINDOW */
-}
-
-static inline void setMsgQueueTimerFlag (PMSGQUEUE pMsgQueue, int slot)
-{
-    pMsgQueue->expired_timer_mask |= (0x01UL << slot);
-    POST_MSGQ (pMsgQueue);
-}
-
-static inline void removeMsgQueueTimerFlag (PMSGQUEUE pMsgQueue, int slot)
-{
-    pMsgQueue->expired_timer_mask &= ~(0x01UL << slot);
-}
-#endif /* deprecated code */
-
-BOOL mg_InitTimer (BOOL use_sys_timer);
-void mg_TerminateTimer (BOOL use_sys_timer);
+/* Since 5.0.14, remove arg use_sys_timer */
+BOOL mg_InitTimer (void);
+void mg_TerminateTimer (void);
 
 /*window element renderer manager interface*/
 extern WINDOW_ELEMENT_RENDERER * __mg_def_renderer;
@@ -951,9 +927,7 @@ BOOL gui_LoadIconRes(HDC hdc, const char* rdr_name, char* file);
 void gui_WndRect(HWND hWnd, PRECT prc);
 void gui_WndClientRect(HWND hWnd, PRECT prc);
 
-/* Undisclosed APIs */
-HDC CreateMemDCFromSurface (struct GAL_Surface* surface);
-struct GAL_Surface* GetSurfaceFromDC (HDC hdc);
+HDC __mg_create_memdc_for_surface (struct GAL_Surface* surface);
 
 /* Since 5.0.0 */
 #ifdef _MGRM_PROCESSES

src/include/map.h

@@ -83,6 +83,11 @@ static inline int comp_key_string (const void *key1, const void *key2)
     return strcmp (key1, key2);
 }
 
+static inline void free_val_alloc (void *val)
+{
+    free (val);
+}
+
 typedef struct _map_t map_t;
 typedef struct _map_entry_t {
     struct rb_node  node;
@@ -100,8 +105,15 @@ int __mg_map_get_size (map_t* map);
 
 map_entry_t* __mg_map_find (map_t* map, const void* key);
 
-int __mg_map_insert_ex (map_t* map, const void* key,
+map_entry_t* __mg_map_insert_ex2 (map_t* map, const void* key,
         const void* val, free_val_fn free_val_alt);
+
+static int __mg_map_insert_ex (map_t* map, const void* key,
+        const void* val, free_val_fn free_val_alt)
+{
+    return __mg_map_insert_ex2(map, key, val, NULL) ? 0 : -1;
+}
+
 static inline int  __mg_map_insert (map_t* map, const void* key,
         const void* val)
 {
@@ -114,7 +126,7 @@ int __mg_map_find_replace_or_insert (map_t* map, const void* key,
 int __mg_map_replace (map_t* map, const void* key,
         const void* val, free_val_fn free_val_alt);
 
-int __mg_map_erase (map_t* map, void* key);
+int __mg_map_erase (map_t* map, const void* key);
 int __mg_map_get_size (map_t* map);
 
 #if 0   /* deprecated code */

src/include/misc.h

@@ -79,6 +79,11 @@ struct timezone {
 extern "C" {
 #endif  /* __cplusplus */
 
+void __mg_lock_file_for_read(int fd);
+void __mg_unlock_file_for_read(int fd);
+void __mg_lock_file_for_write(int fd);
+void __mg_unlock_file_for_write(int fd);
+
 unsigned int __mg_os_get_random_seed (void);
 void __mg_os_time_delay (int ms);
 void __mg_os_start_time (void);
@@ -115,10 +120,11 @@ void mg_TerminateMisc (void);
 BOOL mg_InitSystemRes (void);
 void mg_TerminateSystemRes (void);
 
+/* Deprecated since 5.2.0
 #ifdef _MGSCHEMA_COMPOSITING
 int __mg_alloc_sem_for_shared_surf (void);
 int __mg_free_sem_for_shared_surf (int sem_num);
-#endif /* _MGSCHEMA_COMPOSITING */
+#endif _MGSCHEMA_COMPOSITING */
 
 size_t __mg_lookfor_unused_slot (unsigned char* bitmap, size_t len_bmp, int set);
 

src/include/msgstr.h

@@ -396,10 +396,10 @@ char * __mg_msgstr3 [] =
     "MSG_SRVNOTIFY",          // 0x0147
     "MSG_UPDATECLIWIN",       // 0x0148
     "MSG_LAYERCHANGED",       // 0x0149
-    "MSG_MANAGE_MSGTHREAD",   // 0x014A
-    "MSG_CALC_POSITION",      // 0x014B
-    "",                       // 0x014C
-    "",                       // 0x014D
+    "MSG_WINCOMPOSITED",      // 0x014A
+    "MSG_MANAGE_MSGTHREAD",   // 0x014B
+    "MSG_CALC_POSITION",      // 0x014C
+    "MSG_WAKEUP_CLIENT",      // 0x014D
     "",                       // 0x014E
     "",                       // 0x014F
 

src/include/newgal.h

@@ -55,9 +55,9 @@
 #ifndef GUI_NEWGAL_H
     #define GUI_NEWGAL_H
 
+#include "minigui.h"
 #include "gdi.h"
 #include "constants.h"
-#include "blockheap.h"
 
 #if IS_COMPOSITING_SCHEMA
 #include <sys/types.h>
@@ -117,8 +117,10 @@ void GAL_FreeFormat(GAL_PixelFormat *format);
 
 /* typedef for private surface blitting functions */
 struct GAL_Surface;
-typedef int (*GAL_blit)(struct GAL_Surface *src, GAL_Rect *srcrect,
-                        struct GAL_Surface *dst, GAL_Rect *dstrect);
+
+typedef int (*GAL_blit)(GAL_VideoDevice *video,
+        struct GAL_Surface *src, GAL_Rect *srcrect,
+        struct GAL_Surface *dst, GAL_Rect *dstrect);
 
 #if IS_COMPOSITING_SCHEMA
 typedef struct _DirtyInfo {
@@ -137,20 +139,25 @@ typedef struct _DirtyInfo {
  * than the creator.
  */
 typedef struct _SharedSurfaceHeader {
-    /* The number of semphore for this surface.
-       The SysV semaphore set id for synchronizing this shared surface:
-       SHAREDRES_SEMID_SHARED_SURF. */
-    int             sem_num;
+    /* the name of the shared surface; since 5.2.0. */
+    char            name[NAME_MAX + 1];
 
-    /* The pid of the creator */
-    pid_t           creator;
+    /* The client identifier of the creator. */
+    int             create_cli;
 
-    /* The file descriptor in context of the creator. */
-    int             fd;
     /* Not zero for hardware surface. */
     int             byhw;
-    /* The dirty information */
-    GAL_DirtyInfo   dirty_info;
+
+    /* Deprecated since 5.2.0.
+       The number of semphore for this surface.
+       The SysV semaphore set id for synchronizing this shared surface:
+       SHAREDRES_SEMID_SHARED_SURF.
+    int             sem_num; */
+
+    /* Deprecated since 5.2.0.
+       The file descriptor in context of the creator.
+    int             fd; */
+
     /* the size of the surface */
     int             width, height;
     /* the pitch of the surface */
@@ -164,6 +171,9 @@ typedef struct _SharedSurfaceHeader {
     size_t          map_size;
     /* the offset of pixels data */
     off_t           pixels_off;
+
+    /* The dirty information */
+    GAL_DirtyInfo   dirty_info;
 } GAL_SharedSurfaceHeader;
 #endif /* IS_COMPOSITING_SCHEMA */
 
@@ -228,6 +238,8 @@ typedef struct GAL_Surface {
     GAL_SharedSurfaceHeader *shared_header;     /* Private */
     /* The dirty info for non-shared surface. */
     GAL_DirtyInfo *dirty_info;                  /* Private */
+    /* The file descriptor if the surface is a shared surface. */
+    int  fd;                                    /* Private; since 5.2.0. */
 #endif
 } GAL_Surface;
 
@@ -250,6 +262,8 @@ typedef struct GAL_Surface {
 
 #define GAL_PREALLOC         0x01000000    /* Surface uses preallocated memory */
 #define GAL_FORMAT_CHECKED   0x02000000    /* Pixman format checked */
+#define GAL_SSURF_ATTACHED   0x04000000    /* The shared surface is attached to. */
+#define GAL_SSURF_LOCKED     0x08000000    /* The shared surface is locked. */
 
 /* Available for GAL_SetVideoMode() */
 #define GAL_ANYFORMAT        0x10000000     /* Allow any video depth/pixel-format */
@@ -569,6 +583,11 @@ GAL_Surface *GAL_CreateRGBSurface
 GAL_Surface *GAL_CreateRGBSurfaceFrom (void *pixels,
                         int width, int height, int depth, int pitch,
                         Uint32 Rmask, Uint32 Gmask, Uint32 Bmask, Uint32 Amask);
+/* Since 5.2.0 */
+static GAL_Surface *GAL_RefSurface (GAL_Surface *surface) {
+    surface->refcount++;
+    return surface;
+}
 void GAL_FreeSurface (GAL_Surface *surface);
 
 typedef struct REQ_HWSURFACE {
@@ -649,11 +668,11 @@ GAL_Surface *GAL_CreateSurfaceForZNodeAs (const GAL_Surface* ref_surf,
 void GAL_FreeSharedSurfaceData (GAL_Surface *surface);
 
 /* Attach to a shared RGB surface. */
-GAL_Surface *GAL_AttachSharedRGBSurface (int fd, size_t map_size,
-            Uint32 flags, BOOL with_wr);
+GAL_Surface *GAL_AttachSharedRGBSurface (GAL_VideoDevice* video,
+        int fd, size_t map_size, Uint32 flags, BOOL with_wr);
 
-/* Dettach from a shared RGB surface from the specific video device. */
-void GAL_DettachSharedSurfaceData (GAL_Surface *surface);
+/* Detach from a shared RGB surface from the specific video device. */
+void GAL_DetachSharedSurfaceData (GAL_Surface *surface);
 
 /* Create a cursor surface from the specific video device. */
 GAL_Surface* GAL_CreateCursorSurface (GAL_VideoDevice* video,
@@ -670,7 +689,6 @@ void GAL_MoveCursor (GAL_Surface* surface, int x, int y);
 
 #endif /* defined _MGSCHEMA_COMPOSITING */
 
-#if 0
 /*
  * GAL_LockSurface() sets up a surface for directly accessing the pixels.
  * Between calls to GAL_LockSurface()/GAL_UnlockSurface(), you can write
@@ -680,9 +698,7 @@ void GAL_MoveCursor (GAL_Surface* surface, int x, int y);
  *
  * Not all surfaces require locking.  If GAL_MUSTLOCK(surface) evaluates
  * to 0, then you can read and write to the surface at any time, and the
- * pixel format of the surface will not change.  In particular, if the
- * GAL_HWSURFACE flag is not given when calling GAL_SetVideoMode(), you
- * will not need to lock the display surface before accessing it.
+ * pixel format of the surface will not change.
  *
  * No operating system or library calls should be made between lock/unlock
  * pairs, as critical system locks may be held during this time.
@@ -691,7 +707,6 @@ void GAL_MoveCursor (GAL_Surface* surface, int x, int y);
  */
 int GAL_LockSurface (GAL_Surface *surface);
 void GAL_UnlockSurface (GAL_Surface *surface);
-#endif
 
 /*
  * Set the color key (transparent pixel) in a blittable surface.
@@ -735,10 +750,10 @@ GAL_bool GAL_IntersectRect (const GAL_Rect *A, const GAL_Rect *B,
     Bmin = B->x;
     Bmax = Bmin + B->w;
     if (Bmin > Amin)
-            Amin = Bmin;
+        Amin = Bmin;
     intersection->x = Amin;
     if (Bmax < Amax)
-            Amax = Bmax;
+        Amax = Bmax;
     intersection->w = Amax - Amin > 0 ? Amax - Amin : 0;
 
     /* Vertical intersection */
@@ -747,10 +762,10 @@ GAL_bool GAL_IntersectRect (const GAL_Rect *A, const GAL_Rect *B,
     Bmin = B->y;
     Bmax = Bmin + B->h;
     if (Bmin > Amin)
-            Amin = Bmin;
+        Amin = Bmin;
     intersection->y = Amin;
     if (Bmax < Amax)
-            Amax = Bmax;
+        Amax = Bmax;
     intersection->h = Amax - Amin > 0 ? Amax - Amin : 0;
 
     return (intersection->w && intersection->h);

src/include/ourhdr.h

@@ -73,6 +73,8 @@
 
 #if defined(__GNU_LIBRARY__) && !defined(_SEM_SEMUN_UNDEFINED)
 /* union semun is defined by including <sys/sem.h> */
+#elif defined(__DARWIN__)
+/* union semun is defined by including <sys/sem.h> */
 #else
 /* according to X/OPEN we have to define it ourselves */
 union semun {

src/include/server.h

@@ -132,6 +132,13 @@ void __mg_client_del (int cli);
 
 void __mg_release_global_res (int cli);
 
+/* Since 5.2.0 */
+int __mg_nssurf_map_new(void);
+void __mg_nssurf_map_delete(void);
+int __mg_nssurf_map_operate_srv(const OPERATENSSURFINFO* req_info,
+        int cli, int fd);
+int __mg_get_shared_surface_srv(const char *itn_name, SHAREDSURFINFO *info);
+
 void __mg_remove_client (int cli, int clifd);
 
 int __mg_handle_request (int clifd, int req_id, int cli);
@@ -150,6 +157,7 @@ int __mg_remove_all_znodes_of_client (int cli);
 
 int __mg_handle_normal_mouse_move (const ZORDERINFO* zi, int x, int y);
 int __mg_get_znode_at_point (const ZORDERINFO* zi, int x, int y, HWND* hwnd);
+ZORDERNODE *__mg_find_znode_by_client_hwnd (int cli, HWND hwnd);
 
 int __mg_do_reghook_operation (int cli, const REGHOOKINFO* info);
 int __mg_handle_mouse_hook (int message, WPARAM wParam, LPARAM lParam);

src/include/sharedres.h

@@ -112,7 +112,7 @@ typedef struct tagG_RES {
 
     int nr_layers;
     int semid_layer;
-#ifdef _MGSCHEMA_COMPOSITING
+#if 0 && defined(_MGSCHEMA_COMPOSITING) // deprecated since 5.2.0
     int semid_shared_surf;  /* the id of semaphore set for shared surfaces */
 #endif
 
@@ -208,7 +208,7 @@ typedef G_RES* PG_RES;
 #define SHAREDRES_NR_LAYSERS    (((PG_RES)mgSharedRes)->nr_layers)
 #define SHAREDRES_SEMID_LAYER   (((PG_RES)mgSharedRes)->semid_layer)
 
-#ifdef _MGSCHEMA_COMPOSITING
+#if 0 && defined(_MGSCHEMA_COMPOSITING) // Deprecated since 5.2.0
 # define SHAREDRES_SEMID_SHARED_SURF (((PG_RES)mgSharedRes)->semid_shared_surf)
 #endif
 

src/include/timer.h

@@ -74,7 +74,7 @@ typedef struct _MSGQUEUE MSGQUEUE;
 extern "C" {
 #endif  /* __cplusplus */
 
-void __mg_update_tick_count (void* data);
+DWORD __mg_update_tick_count (MSGQUEUE* msg_queue);
 int  __mg_check_expired_timers (MSGQUEUE* msg_queue, DWORD inter);
 void __mg_remove_timers_by_msg_queue (MSGQUEUE* msg_queue);
 void __mg_remove_timer (MSGQUEUE* msg_queue, int slot);

src/include/zorder.h

@@ -141,11 +141,17 @@ typedef struct _ZORDERINFO {
     /* The size of usage bitmap for mask rect. */
     int             size_maskrect_usage_bmp;
 
+/* use read/write lock for Unix-like OS */
+#ifndef __NOUNIX__
+#define __ZI_USE_RWLOCK 1
+#endif
+
 #ifdef _MGRM_THREADS
-# ifndef __NOUNIX__
+# ifdef __ZI_USE_RWLOCK
     pthread_rwlock_t rwlock;
+    pthread_t        rwlock_owner;
 # else
-    pthread_mutex_t  rwlock;
+    pthread_mutex_t mutex;
 # endif
 #elif defined(_MGRM_PROCESSES)
     int             zi_semid;

src/kernel/Makefile.am

@@ -1,5 +1,6 @@
 # also for makefile.ng and makefile.msvc
 AM_CPPFLAGS = -I$(abs_top_srcdir)/src/include -I$(abs_top_srcdir)/include
+AM_CFLAGS = -Wno-zero-length-bounds
 
 noinst_LTLIBRARIES = libkernel.la
 

src/kernel/blockheap.c

@@ -59,13 +59,13 @@
 #include "common.h"
 #include "minigui.h"
 #include "gdi.h"
+#include "window.h"
 #include "constants.h"
-#include "blockheap.h"
 #include "misc.h"
 
 BOOL InitBlockDataHeap (PBLOCKHEAP heap, size_t sz_block, size_t sz_heap)
 {
-#ifdef _MGRM_THREADS
+#ifdef _MGHAVE_VIRTUAL_WINDOW
     pthread_mutex_init (&heap->lock, NULL);
 #endif
 
@@ -99,7 +99,7 @@ void* BlockDataAlloc (PBLOCKHEAP heap)
     int free_slot;
     unsigned char* block_data = NULL;
 
-#ifdef _MGRM_THREADS
+#ifdef _MGHAVE_VIRTUAL_WINDOW
     pthread_mutex_lock (&heap->lock);
 #endif
 
@@ -118,7 +118,7 @@ void* BlockDataAlloc (PBLOCKHEAP heap)
 
 ret:
 
-#ifdef _MGRM_THREADS
+#ifdef _MGHAVE_VIRTUAL_WINDOW
     pthread_mutex_unlock (&heap->lock);
 #endif
     return block_data;
@@ -128,7 +128,7 @@ void BlockDataFree (PBLOCKHEAP heap, void* data)
 {
     unsigned char* block_data = data;
 
-#ifdef _MGRM_THREADS
+#ifdef _MGHAVE_VIRTUAL_WINDOW
     pthread_mutex_lock (&heap->lock);
 #endif
 
@@ -146,7 +146,7 @@ void BlockDataFree (PBLOCKHEAP heap, void* data)
                 heap, slot);
     }
 
-#ifdef _MGRM_THREADS
+#ifdef _MGHAVE_VIRTUAL_WINDOW
     pthread_mutex_unlock (&heap->lock);
 #endif
 }
@@ -193,7 +193,7 @@ void DestroyBlockDataHeap (PBLOCKHEAP heap)
     free (heap->usage_bmp);
     heap->usage_bmp = NULL;
 
-#ifdef _MGRM_THREADS
+#ifdef _MGHAVE_VIRTUAL_WINDOW
     pthread_mutex_destroy (&heap->lock);
 #endif
 }

src/kernel/compsor-fallback.c

@@ -228,6 +228,7 @@ static void composite_wallpaper_rect (CompositorCtxt* ctxt,
         }
     }
     else {
+        SelectClipRect (HDC_SCREEN_SYS, dirty_rc);
         SetBrushColor (HDC_SCREEN_SYS,
             GetWindowElementPixelEx (HWND_DESKTOP, HDC_SCREEN_SYS,
                 WE_BGC_DESKTOP));
@@ -678,6 +679,19 @@ static BOOL merge_dirty_ppp (CompositorCtxt* ctxt, MG_Layer* layer, int zidx)
     return rc;
 }
 
+#if 0
+static void dump_dirty_region(CompositorCtxt* ctxt, const char *prefix, int zidx)
+{
+    CLIPRGN* rgn = &ctxt->dirty_rgn;
+    _WRN_PRINTF("%s (%d): dirty region on screen: (%d, %d) %d x %d; "
+            "highest dirty win: %d; lowest dirty win: %d\n",
+            prefix, zidx,
+            rgn->rcBound.left, rgn->rcBound.top,
+            RECTW (rgn->rcBound), RECTH (rgn->rcBound),
+            ctxt->highest_dirty_win, ctxt->lowest_dirty_win);
+}
+#endif
+
 static BOOL merge_dirty_win (CompositorCtxt* ctxt, MG_Layer* layer, int zidx)
 {
     BOOL rc = FALSE;
@@ -721,9 +735,13 @@ static BOOL merge_dirty_wpp (CompositorCtxt* ctxt, MG_Layer* layer)
 static BOOL refresh_dirty_region (CompositorCtxt* ctxt, MG_Layer* layer)
 {
     /* the fallback compositor only manages znodes on the topmost layer. */
-    if (layer != mgTopmostLayer || IsEmptyClipRgn (&ctxt->dirty_rgn))
+    if (layer != mgTopmostLayer)
         return FALSE;
 
+    if (IsEmptyClipRgn (&ctxt->dirty_rgn)) {
+        return FALSE;
+    }
+
     if (ctxt->highest_dirty_ppp >= 0) {
         composite_ppp_znodes (ctxt);
     }

src/kernel/compsor-manager.c

@@ -15,7 +15,7 @@
  *   and Graphics User Interface (GUI) support system for embedded systems
  *   and smart IoT devices.
  *
- *   Copyright (C) 2002~2021, Beijing FMSoft Technologies Co., Ltd.
+ *   Copyright (C) 2002~2022, Beijing FMSoft Technologies Co., Ltd.
  *   Copyright (C) 1998~2002, WEI Yongming
  *
  *   This program is free software: you can redistribute it and/or modify
@@ -56,7 +56,6 @@
 #include <string.h>
 #include <errno.h>
 
-#define _DEBUG
 #include "common.h"
 
 #if defined(_MGRM_PROCESSES) && defined(_MGSCHEMA_COMPOSITING)
@@ -69,6 +68,7 @@
 #include "constants.h"
 #include "zorder.h"
 #include "dc.h"
+#include "server.h"
 
 #define MAX_NR_COMPOSITORS      8
 #define LEN_COMPOSITOR_NAME     15
@@ -133,31 +133,51 @@ static void lock_znode_surface (PDC pdc, ZORDERNODE* node)
 {
     if (node->lock_count == 0) {
         if (pdc->surface->shared_header) {
-            LOCK_SURFACE_SEM (pdc->surface->shared_header->sem_num);
+            __mg_lock_file_for_read(pdc->surface->fd);
         }
 
         node->dirty_age = pdc->surface->dirty_info->dirty_age;
         node->nr_dirty_rcs = pdc->surface->dirty_info->nr_dirty_rcs;
         node->dirty_rcs = pdc->surface->dirty_info->dirty_rcs;
-
     }
 
     node->lock_count++;
 }
 
-static void unlock_znode_surface (PDC pdc, ZORDERNODE* node)
+static BOOL unlock_znode_surface (PDC pdc, ZORDERNODE* node)
 {
+    BOOL need_reset = FALSE;
     if (node->lock_count > 0) {
         node->lock_count--;
         if (node->lock_count == 0) {
-            if (pdc->surface->shared_header)
-                UNLOCK_SURFACE_SEM (pdc->surface->shared_header->sem_num);
+            if (node->changes != pdc->surface->dirty_info->dirty_age) {
+                node->changes = pdc->surface->dirty_info->dirty_age;
+                need_reset = TRUE;
+            }
+
+            if (pdc->surface->shared_header) {
+                __mg_unlock_file_for_read(pdc->surface->fd);
+            }
 
             node->dirty_age = 0;
             node->nr_dirty_rcs = 0;
             node->dirty_rcs = NULL;
         }
     }
+
+    return need_reset;
+}
+
+static void reset_znode_surface_dirty (PDC pdc, ZORDERNODE* node, int slot)
+{
+    if (node->cli == 0 || slot == 0) {
+        pdc->surface->dirty_info->nr_dirty_rcs = 0;
+    }
+    else if (node->hwnd) {
+        MSG msg = { HWND_NULL, MSG_WINCOMPOSITED,
+            slot, (LPARAM)node->hwnd, (DWORD)node->changes };
+        __mg_send2client(&msg, mgClients + node->cli);
+    }
 }
 
 #if 0   /* not optimized */
@@ -322,10 +342,8 @@ static void composite_layer (MG_Layer* layer, CompositorCtxt* ctxt,
         nodes = GET_MENUNODE(zi);
         for (i = 0; i < zi->nr_popupmenus; i++) {
             pdc = dc_HDC2PDC (nodes[i].mem_dc);
-
-            nodes[i].changes = pdc->surface->dirty_info->dirty_age;
-            pdc->surface->dirty_info->nr_dirty_rcs = 0;
-            unlock_znode_surface (pdc, nodes + i);
+            if (unlock_znode_surface (pdc, nodes + i))
+                reset_znode_surface_dirty (pdc, nodes + i, i);
         }
     }
 
@@ -335,9 +353,8 @@ static void composite_layer (MG_Layer* layer, CompositorCtxt* ctxt,
     while ((next = __kernel_get_next_znode (zi, next)) > 0) {
         if (nodes [next].flags & ZOF_VISIBLE) {
             pdc = dc_HDC2PDC (nodes[next].mem_dc);
-            nodes[next].changes = pdc->surface->dirty_info->dirty_age;
-            pdc->surface->dirty_info->nr_dirty_rcs = 0;
-            unlock_znode_surface (pdc, nodes + next);
+            if (unlock_znode_surface (pdc, nodes + next))
+                reset_znode_surface_dirty (pdc, nodes + next, next);
         }
     }
 
@@ -346,9 +363,8 @@ static void composite_layer (MG_Layer* layer, CompositorCtxt* ctxt,
     if (layer == mgTopmostLayer) {
         pdc = dc_HDC2PDC (HDC_SCREEN);
         if (pdc->surface->w > 0 && pdc->surface->h > 0) {
-            nodes[0].changes = pdc->surface->dirty_info->dirty_age;
-            pdc->surface->dirty_info->nr_dirty_rcs = 0;
-            unlock_znode_surface (pdc, nodes);
+            if (unlock_znode_surface (pdc, nodes))
+                reset_znode_surface_dirty (pdc, nodes, 0);
         }
     }
 }
@@ -489,7 +505,7 @@ const CompositorOps* GUIAPI ServerGetCompositorOps (const char* name)
         return NULL;
 
     for (i = 0; i < MAX_NR_COMPOSITORS; i++) {
-        if (compositors [i].name && strcmp (compositors [i].name, name) == 0) {
+        if (strcmp (compositors [i].name, name) == 0) {
             return compositors [i].ops;
         }
     }

src/kernel/cursor-procs.c

@@ -1081,6 +1081,12 @@ void kernel_ShowCursorForGDI (BOOL fShow, void* pdc)
     const RECT* prc;
 
     prc = &cur_pdc->rc_output;
+
+    /* Since 5.0.13 */
+    if (!fShow) {
+        GAL_LockSurface(cur_pdc->surface);
+    }
+
     if (cur_pdc->surface != __gal_screen) {
         if (fShow) {
             GAL_UpdateRect (cur_pdc->surface,
@@ -1090,7 +1096,7 @@ void kernel_ShowCursorForGDI (BOOL fShow, void* pdc)
     }
     else {
         if (!mgIsServer && (SHAREDRES_TOPMOST_LAYER != __mg_layer)) {
-            return;
+            goto done;
         }
 
         if (!fShow) {
@@ -1109,6 +1115,12 @@ void kernel_ShowCursorForGDI (BOOL fShow, void* pdc)
             UNLOCK_CURSOR_SEM ();
         }
     }
+
+done:
+    /* Since 5.0.13 */
+    if (fShow) {
+        GAL_UnlockSurface(cur_pdc->surface);
+    }
 }
 
 #else   /* defined _MGSCHEMA_SHAREDFB */
@@ -1124,6 +1136,12 @@ void kernel_ShowCursorForGDI (BOOL fShow, void* pdc)
     }
 
     prc = &cur_pdc->rc_output;
+
+    /* Since 5.0.13 */
+    if (!fShow) {
+        GAL_LockSurface(cur_pdc->surface);
+    }
+
     if (cur_pdc->surface == __gal_screen) {
         // Under compositing schema, we never call SyncUpdate in
         // kernel_ShowCursorForGDI for __gal_screen.
@@ -1150,6 +1168,11 @@ void kernel_ShowCursorForGDI (BOOL fShow, void* pdc)
         // For surface other than screen, we call SyncUpdate.
         GAL_SyncUpdate (cur_pdc->surface);
     }
+
+    /* Since 5.0.13 */
+    if (fShow) {
+        GAL_UnlockSurface(cur_pdc->surface);
+    }
 }
 
 #endif  /* not defined _MGSCHEMA_SHAREDFB */
@@ -1228,26 +1251,25 @@ void kernel_ShowCursorForGDI (BOOL fShow, void* pdc)
     PDC cur_pdc = (PDC)pdc;
     const RECT* prc = NULL;
 
-    prc = &cur_pdc->rc_output;
-
-    /* houhh20080827, if --disable-cursor, mginit can not update auto(qvfb). */
-#if 0
-    if (cur_pdc->surface == __gal_screen
-            && mgIsServer && (SHAREDRES_TOPMOST_LAYER != __mg_layer))
-        return;
-
-    if (fShow)
-        GAL_UpdateRect (cur_pdc->surface,
-                        prc->left, prc->top, RECTWP(prc), RECTHP(prc));
-#else
     if (!mgIsServer && (SHAREDRES_TOPMOST_LAYER != __mg_layer)) {
         return;
     }
 
+    prc = &cur_pdc->rc_output;
+
+    /* Since 5.0.13 */
+    if (!fShow) {
+        GAL_LockSurface(cur_pdc->surface);
+    }
+
     if (fShow)
         GAL_UpdateRect (cur_pdc->surface,
                 prc->left, prc->top, RECTWP(prc), RECTHP(prc));
-#endif
+
+    /* Since 5.0.13 */
+    if (fShow) {
+        GAL_UnlockSurface(cur_pdc->surface);
+    }
 }
 
 #endif /* _MGHAVE_CURSOR */

src/kernel/cursor-sa.c

@@ -448,6 +448,11 @@ void kernel_ShowCursorForGDI (BOOL fShow, void* pdc)
 
     prc = &cur_pdc->rc_output;
 
+    /* Since 5.0.13 */
+    if (!fShow) {
+        GAL_LockSurface(cur_pdc->surface);
+    }
+
     if (cur_pdc->surface != __gal_screen) {
         if (fShow) {
             GAL_UpdateRect (cur_pdc->surface,
@@ -472,7 +477,7 @@ void kernel_ShowCursorForGDI (BOOL fShow, void* pdc)
                                 prc->left, prc->top, RECTWP(prc), RECTHP(prc));
                 //GAL_SyncUpdate (cur_pdc->surface);
             }
-            return;
+            goto done;
         }
 
         if (fShow && nShowCount >= 0 && pCurCsr) {
@@ -488,6 +493,12 @@ void kernel_ShowCursorForGDI (BOOL fShow, void* pdc)
             //GAL_SyncUpdate (cur_pdc->surface);
         }
     }
+
+done:
+    /* Since 5.0.13 */
+    if (fShow) {
+        GAL_UnlockSurface(cur_pdc->surface);
+    }
 }
 
 int GUIAPI ShowCursor (BOOL fShow)
@@ -516,9 +527,16 @@ void kernel_ShowCursorForGDI(BOOL fShow, void* pdc)
 
     prc = &cur_pdc->rc_output;
 
-    if (fShow)
+    /* Since 5.0.13 */
+    if (!fShow) {
+        GAL_LockSurface(cur_pdc->surface);
+    }
+    else {
         GAL_UpdateRect (cur_pdc->surface,
                         prc->left, prc->top, RECTWP(prc), RECTHP(prc));
+        /* Since 5.0.13 */
+        GAL_UnlockSurface(cur_pdc->surface);
+    }
 }
 
 #endif /* _MGHAVE_CURSOR */

src/kernel/cursor.c

@@ -472,11 +472,15 @@ void kernel_ShowCursorForGDI (BOOL fShow, void *pdc)
 
     prc = &cur_pdc->rc_output;
 
+    /* Since 5.0.13 */
+    if (!fShow) {
+        GAL_LockSurface(cur_pdc->surface);
+    }
+
     if (cur_pdc->surface != __gal_screen) {
         if (fShow) {
-            GAL_UpdateRect (cur_pdc->surface,
+            GAL_UpdateRect(cur_pdc->surface,
                             prc->left, prc->top, RECTWP(prc), RECTHP(prc));
-            // GAL_SyncUpdate (cur_pdc->surface);
         }
     }
     else {
@@ -500,7 +504,7 @@ void kernel_ShowCursorForGDI (BOOL fShow, void *pdc)
                 pthread_mutex_unlock(&__mg_mouselock);
                 // GAL_SyncUpdate (cur_pdc->surface);
             }
-            return;
+            goto done;
         }
 
         if (fShow && nShowCount >= 0 && pCurCsr) {
@@ -518,6 +522,12 @@ void kernel_ShowCursorForGDI (BOOL fShow, void *pdc)
             // GAL_SyncUpdate (cur_pdc->surface);
         }
     }
+
+done:
+    /* Since 5.0.13 */
+    if (fShow) {
+        GAL_UnlockSurface(cur_pdc->surface);
+    }
 }
 
 int GUIAPI ShowCursor(BOOL fShow)
@@ -558,9 +568,17 @@ void kernel_ShowCursorForGDI (BOOL fShow, void* pdc)
 
     prc = &cur_pdc->rc_output;
 
-    if (fShow)
+    /* Since 5.0.13 */
+    if (!fShow) {
+        GAL_LockSurface(cur_pdc->surface);
+    }
+    else {
         GAL_UpdateRect (cur_pdc->surface,
                         prc->left, prc->top, RECTWP(prc), RECTHP(prc));
+
+        /* Since 5.0.13 */
+        GAL_UnlockSurface(cur_pdc->surface);
+    }
 }
 
 #endif /* _MGHAVE_CURSOR */

src/kernel/desktop-comm.c

@@ -232,7 +232,7 @@ static int dskAddNewMainWindow (PMAINWIN pWin)
 
     if (pWin->secondaryDC == HDC_INVALID) {
         /* remove the flag of WS_EX_AUTOSECONDARYDC */
-        pWin->dwExStyle = pWin->dwExStyle | WS_EX_AUTOSECONDARYDC;
+        pWin->dwExStyle &= ~WS_EX_AUTOSECONDARYDC;
         pWin->secondaryDC = 0;
 
     }
@@ -1429,6 +1429,8 @@ static LRESULT WindowMessageHandler(UINT message, PMAINWIN pWin, LPARAM lParam)
     /* Since 5.0.0 */
     case MSG_SETAUTOREPEAT:
         sg_msgAutoRepeat = *(const MSG*)lParam;
+        /* start auto-repeat after 300ms */
+        sg_msgAutoRepeat.time = __mg_tick_counter + (__mg_timeout_usec/10000);
         break;
 
     /* Since 5.0.0 */
@@ -1743,11 +1745,6 @@ static int dskOnRemoveCtrlInstance (PCONTROL pParent, PCONTROL pCtrl)
         FreeZOrderNode (0, pCtrl->idx_znode, NULL);
     }
 
-    if (fFound) {
-        pCtrl->pcci->nUseCount --;
-        return 0;
-    }
-
     if ((HWND)pCtrl == __mg_captured_wnd) {
         /* force release the capture */
         __mg_captured_wnd = 0;
@@ -1762,6 +1759,11 @@ static int dskOnRemoveCtrlInstance (PCONTROL pParent, PCONTROL pCtrl)
         sg_msgAutoRepeat.hwnd = 0;
     }
 
+    if (fFound) {
+        pCtrl->pcci->nUseCount--;
+        return 0;
+    }
+
     return -1;
 }
 
@@ -1873,9 +1875,12 @@ static void dskOnTimeout (void)
     static DWORD uCounter = 0;
     static DWORD blink_counter = 0;
 
-    if (sg_msgAutoRepeat.hwnd != 0) {
+    if (sg_msgAutoRepeat.hwnd != 0 &&
+            __mg_tick_counter >= sg_msgAutoRepeat.time) {
         PostMessage (sg_msgAutoRepeat.hwnd, sg_msgAutoRepeat.message,
                 sg_msgAutoRepeat.wParam, sg_msgAutoRepeat.lParam);
+        /* next auto-repeat msg after 50ms */
+        sg_msgAutoRepeat.time = __mg_tick_counter + (__mg_repeat_usec/10000);
     }
 
     if (__mg_tick_counter < (blink_counter + 10))

src/kernel/desktop-sa.c

@@ -74,6 +74,7 @@
 #include "dc.h"
 #include "misc.h"
 #include "devfont.h"
+#include "event.h"
 
 #ifndef WIN32
 #include <sys/termios.h>
@@ -102,14 +103,6 @@ BOOL mg_InitDesktop (void)
     int ret;
     RECT rcScr = GetScreenRect();
 
-#if 0   /* move to init-lite.c */
-    /* Since 5.0.0: allocate message queue for desktop thread */
-    if (!(__mg_dsk_msg_queue = mg_AllocMsgQueueForThisThread ()) ) {
-        _WRN_PRINTF ("failed to allocate message queue\n");
-        return FALSE;
-    }
-#endif  /* moved code */
-
     /*
      * Init ZOrderInfo here.
      */
@@ -153,7 +146,7 @@ BOOL mg_InitDesktop (void)
 void mg_TerminateDesktop (void)
 {
     if (__mg_dsk_msg_queue) {
-        mg_FreeMsgQueueForThisThread ();
+        mg_FreeMsgQueueForThisThread (TRUE);
         __mg_dsk_msg_queue = NULL;
     }
 

src/kernel/desktop-ths.c

@@ -55,6 +55,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <math.h>
+#include <time.h>
 
 #include "common.h"
 
@@ -72,6 +73,7 @@
 #include "dc.h"
 #include "misc.h"
 #include "devfont.h"
+#include "event.h"
 
 /******************************* global data *********************************/
 /* pointer to desktop message queue */
@@ -140,19 +142,47 @@ BOOL mg_InitDesktop (void)
 
 #include "debug.h"
 
+/* According to a bug report, we use sem_timedwait() instead of
+   calling std_idle_handler for desktop thread.
+   Otherwise, the desktop might not handle the request from other GUI threads
+   as soon as possible. */
+static BOOL idle_handler_for_desktop_thread (MSGQUEUE *msg_queue, BOOL wait)
+{
+    int retv, n = 0;
+
+    __mg_update_tick_count (msg_queue);
+
+    if (wait) {
+        struct timespec ts;
+        if (clock_gettime (CLOCK_REALTIME, &ts) != -1) {
+            ts.tv_nsec += 10 * 1000 * 1000L; // 10ms
+            if (ts.tv_nsec >= 1000 * 1000 * 1000L) {
+                ts.tv_sec += 1;
+                ts.tv_nsec -= 1000 * 1000 * 1000L;
+            }
+
+            if (sem_timedwait (&msg_queue->wait, &ts) == 0)
+                return TRUE;
+        }
+    }
+
+    return n > 0;
+}
+
 void* __kernel_desktop_main (void* data)
 {
     MSG Msg;
 
     /* init message queue of desktop thread */
-    if (!(__mg_dsk_msg_queue = mg_AllocMsgQueueForThisThread ()) ) {
+    if (!(__mg_dsk_msg_queue = mg_AllocMsgQueueForThisThread (TRUE)) ) {
         _ERR_PRINTF ("failed to allocate message queue\n");
         sem_post ((sem_t*)data);
         return NULL;
     }
 
-    /* for threads mode, the idle handler for desktop thread is NULL */
-    __mg_dsk_msg_queue->OnIdle = NULL;
+    /* For bug reported in Issue #116, under threads mode, the idle handler
+       for the desktop thread should call __mg_update_tick_count () */
+    __mg_dsk_msg_queue->OnIdle = idle_handler_for_desktop_thread;
 
     /* init desktop window */
     init_desktop_win ();
@@ -191,7 +221,7 @@ void* __kernel_desktop_main (void* data)
 #endif
     }
 
-    mg_FreeMsgQueueForThisThread ();
+    mg_FreeMsgQueueForThisThread (TRUE);
     __mg_dsk_msg_queue = NULL;
     return NULL;
 }

src/kernel/desktop.c

@@ -15,7 +15,7 @@
  *   and Graphics User Interface (GUI) support system for embedded systems
  *   and smart IoT devices.
  *
- *   Copyright (C) 2002~2018, Beijing FMSoft Technologies Co., Ltd.
+ *   Copyright (C) 2002~2022, Beijing FMSoft Technologies Co., Ltd.
  *   Copyright (C) 1998~2002, WEI Yongming
  *
  *   This program is free software: you can redistribute it and/or modify
@@ -597,55 +597,63 @@ static void reset_window (PMAINWIN pWin, RECT* rcWin)
 #endif
 
 #ifdef _MGRM_THREADS
-#ifndef __NOUNIX__
-/*for unix system, using read/write lock*/
-static inline void lock_zi_for_change (const ZORDERINFO* zi)
+# ifdef __ZI_USE_RWLOCK
+static inline void lock_zi_for_change (ZORDERINFO* zi)
 {
-    pthread_rwlock_wrlock(&((ZORDERINFO*)zi)->rwlock);
+    pthread_rwlock_wrlock(&zi->rwlock);
+    zi->rwlock_owner = pthread_self();
 }
 
-static inline void unlock_zi_for_change (const ZORDERINFO* zi)
+static inline void unlock_zi_for_change (ZORDERINFO* zi)
 {
-    pthread_rwlock_unlock(&((ZORDERINFO*)zi)->rwlock);
+    pthread_rwlock_unlock(&zi->rwlock);
+    zi->rwlock_owner = 0;
 }
 
-static inline void lock_zi_for_read (const ZORDERINFO* zi)
+static inline void lock_zi_for_read (ZORDERINFO* zi)
 {
-    pthread_rwlock_rdlock(&((ZORDERINFO*)zi)->rwlock);
+    if (zi->rwlock_owner == pthread_self()) {
+        return;
+    }
+
+    pthread_rwlock_rdlock(&zi->rwlock);
 }
 
-static inline void unlock_zi_for_read (const ZORDERINFO* zi)
+static inline void unlock_zi_for_read (ZORDERINFO* zi)
 {
-    pthread_rwlock_unlock(&((ZORDERINFO*)zi)->rwlock);
+    if (zi->rwlock_owner == pthread_self()) {
+        return;
+    }
+
+    pthread_rwlock_unlock(&zi->rwlock);
 }
-#else /* __NOUNIX__ */
-/*for non-unix system, using mutex*/
-static inline void lock_zi_for_change (const ZORDERINFO* zi)
+# else /* __ZI_USE_RWLOCK */
+static inline void lock_zi_for_change (ZORDERINFO* zi)
 {
-    pthread_mutex_lock(&((ZORDERINFO*)zi)->rwlock);
+    pthread_mutex_lock(&zi->mutex);
 }
 
-static inline void unlock_zi_for_change (const ZORDERINFO* zi)
+static inline void unlock_zi_for_change (ZORDERINFO* zi)
 {
-    pthread_mutex_unlock(&((ZORDERINFO*)zi)->rwlock);
+    pthread_mutex_unlock(&zi->mutex);
 }
 
-static inline void lock_zi_for_read (const ZORDERINFO* zi)
+static inline void lock_zi_for_read (ZORDERINFO* zi)
 {
-    pthread_mutex_lock(&((ZORDERINFO*)zi)->rwlock);
+    pthread_mutex_lock(&zi->mutex);
 }
 
-static inline void unlock_zi_for_read (const ZORDERINFO* zi)
+static inline void unlock_zi_for_read (ZORDERINFO* zi)
 {
-    pthread_mutex_unlock(&((ZORDERINFO*)zi)->rwlock);
+    pthread_mutex_unlock(&zi->mutex);
 }
-#endif /* __NOUNIX__ */
+# endif /* notdef __ZI_USE_RWLOCK */
 
 #elif defined(_MGRM_STANDALONE)
-static inline void lock_zi_for_change (const ZORDERINFO* zi) { }
-static inline void unlock_zi_for_change (const ZORDERINFO* zi) { }
-static inline void lock_zi_for_read (const ZORDERINFO* zi) { }
-static inline void unlock_zi_for_read (const ZORDERINFO* zi) { }
+static inline void lock_zi_for_change (ZORDERINFO* zi) { }
+static inline void unlock_zi_for_change (ZORDERINFO* zi) { }
+static inline void lock_zi_for_read (ZORDERINFO* zi) { }
+static inline void unlock_zi_for_read (ZORDERINFO* zi) { }
 #else /* for procs */
 /* NULL. see desktop-procs.c */
 #endif /* _MGRM_THREADS */
@@ -1595,8 +1603,10 @@ static int srvStartTrackPopupMenu (int cli, const RECT* rc, HWND ptmi,
             surf->refcount++;
         }
         else if (fd >= 0) {
-            surf = GAL_AttachSharedRGBSurface (fd, surf_size, surf_flags, TRUE);
-            close (fd);
+            surf = GAL_AttachSharedRGBSurface (NULL, fd,
+                    surf_size, surf_flags, TRUE);
+            /* Since 5.2.0: keep fd available.
+            close (fd); */
         }
         else {
             _WRN_PRINTF("not server but fd for shared surface is invalid\n");
@@ -1604,7 +1614,7 @@ static int srvStartTrackPopupMenu (int cli, const RECT* rc, HWND ptmi,
         }
 
         if (surf) {
-            memdc = CreateMemDCFromSurface (surf);
+            memdc = __mg_create_memdc_for_surface (surf);
             if (memdc == HDC_INVALID) {
                 GAL_FreeSurface (surf);
                 _WRN_PRINTF("failed to create memory dc for znode\n");
@@ -1638,11 +1648,14 @@ static int srvStartTrackPopupMenu (int cli, const RECT* rc, HWND ptmi,
     menu_nodes [zi->nr_popupmenus].flags = ZOF_TYPE_POPUPMENU;
     menu_nodes [zi->nr_popupmenus].rc = *rc;
     menu_nodes [zi->nr_popupmenus].hwnd = ptmi;
+    menu_nodes [zi->nr_popupmenus].cli = 0;
 #ifdef _MGSCHEMA_COMPOSITING
     menu_nodes [zi->nr_popupmenus].changes = 0;
     menu_nodes [zi->nr_popupmenus].ct = CT_OPAQUE;
     menu_nodes [zi->nr_popupmenus].ct_arg = 0;
     menu_nodes [zi->nr_popupmenus].mem_dc = memdc;
+    menu_nodes [zi->nr_popupmenus].dirty_age = 0;
+    menu_nodes [zi->nr_popupmenus].nr_dirty_rcs = 0;
     menu_nodes [zi->nr_popupmenus].dirty_rcs = NULL;
 #endif
     menu_nodes [zi->nr_popupmenus].priv_data = NULL;
@@ -2348,6 +2361,8 @@ static int AllocZOrderNodeEx (ZORDERINFO* zi, int cli, HWND hwnd, HWND main_win,
     nodes [free_slot].ct = validate_compositing_type (flags, ct);
     nodes [free_slot].ct_arg = ct_arg;
     nodes [free_slot].mem_dc = mem_dc;
+    nodes [free_slot].dirty_age = 0;
+    nodes [free_slot].nr_dirty_rcs = 0;
     nodes [free_slot].dirty_rcs = NULL;
 #else
     nodes [free_slot].age = 1;
@@ -4499,7 +4514,9 @@ int __mg_join_all_message_threads (void)
 
     list_for_each (l, &msg_queue_list) {
         MSGQUEUE *msg_queue = (MSGQUEUE*)l;
+#ifndef NDEBUG
         dump_message_queue (msg_queue, __func__);
+#endif
         pthread_cancel (msg_queue->th);
     }
 

src/kernel/event.c

@@ -89,8 +89,9 @@
 
 struct timeval __mg_event_timeout;
 
-static DWORD timeoutusec;
-static DWORD repeatusec;
+DWORD __mg_timeout_usec;
+DWORD __mg_repeat_usec;
+
 static DWORD dblclicktime;
 
 #ifndef _MGRM_THREADS
@@ -121,8 +122,8 @@ static void GetTimeout (void)
     char szValue [11];
     int mytimeoutusec, myrepeatusec;
 
-    timeoutusec = DEF_USEC_TIMEOUT;
-    repeatusec = DEF_REPEAT_TIME;
+    __mg_timeout_usec = DEF_USEC_TIMEOUT;
+    __mg_repeat_usec = DEF_REPEAT_TIME;
 
     if (GetMgEtcValue (EVENTPARA, EVENTPARA_REPEATUSEC, szValue, 10) < 0)
         return;
@@ -133,8 +134,8 @@ static void GetTimeout (void)
     mytimeoutusec = atoi(szValue);
 
     if (myrepeatusec >= 0 && mytimeoutusec > 0) {
-        timeoutusec = mytimeoutusec;
-        repeatusec = myrepeatusec;
+        __mg_timeout_usec = mytimeoutusec;
+        __mg_repeat_usec = myrepeatusec;
     }
 }
 
@@ -208,7 +209,7 @@ static void ResetKeyEvent(void)
     IAL_SetLeds (slock | (numlock << 1) | (capslock << 2));
 
     __mg_event_timeout.tv_sec = 0;
-    __mg_event_timeout.tv_usec = timeoutusec;
+    __mg_event_timeout.tv_usec = __mg_timeout_usec;
 
 #ifndef _MGRM_THREADS
 #ifdef _MGRM_PROCESSES
@@ -216,8 +217,8 @@ static void ResetKeyEvent(void)
     SHAREDRES_SHIFTSTATUS = status;
 #endif
 
-    timeout_threshold = timeoutusec / 10000;
-    repeat_threshold = repeatusec / 10000;
+    timeout_threshold = __mg_timeout_usec / 10000;
+    repeat_threshold = __mg_repeat_usec / 10000;
     timeout_count = timeout_threshold;
 #endif
 }
@@ -631,7 +632,7 @@ BOOL kernel_GetLWEvent (int event, PLWEVENT lwe)
 
             // set repeat time
             __mg_event_timeout.tv_sec = 0;
-            __mg_event_timeout.tv_usec = repeatusec;
+            __mg_event_timeout.tv_usec = __mg_repeat_usec;
 
             // repeat last event
             if (old_lwe.type == LWETYPE_KEY
@@ -652,7 +653,7 @@ BOOL kernel_GetLWEvent (int event, PLWEVENT lwe)
                         old_lwe.data.me.event == ME_MIDDLEDOWN))) {
                 // reset delay time
                 __mg_event_timeout.tv_sec = 0;
-                __mg_event_timeout.tv_usec = timeoutusec;
+                __mg_event_timeout.tv_usec = __mg_timeout_usec;
             }
 
             lwe->type = LWETYPE_TIMEOUT;
@@ -880,7 +881,7 @@ BOOL kernel_GetLWEvent (int event, PLWEVENT lwe)
         memcpy (oldkeystate, keystate, nr_keys);
         memcpy (&old_lwe, lwe, sizeof (LWEVENT));
         __mg_event_timeout.tv_sec = 0;
-        __mg_event_timeout.tv_usec = timeoutusec;
+        __mg_event_timeout.tv_usec = __mg_timeout_usec;
         return 1;
     }
 
@@ -899,7 +900,7 @@ mouseret:
     me->status = status;
     memcpy (&old_lwe, lwe, sizeof (LWEVENT));
     __mg_event_timeout.tv_sec = 0;
-    __mg_event_timeout.tv_usec = timeoutusec;
+    __mg_event_timeout.tv_usec = __mg_timeout_usec;
     return 1;
 }
 #endif

src/kernel/fixstr.c

@@ -66,7 +66,7 @@ static struct FIXSTR {
     BYTE bitmap[LEN_BITMAP];
     int offset[NR_HEAP];
     char* heap[NR_HEAP + 1];
-#ifdef _MGRM_THREADS
+#ifdef _MGHAVE_VIRTUAL_WINDOW
     pthread_mutex_t lock;
 #endif
 } FixStrHeap;
@@ -98,7 +98,7 @@ BOOL mg_InitFixStr (void)
         offset += 1<<i;
     }
 
-#ifdef _MGRM_THREADS
+#ifdef _MGHAVE_VIRTUAL_WINDOW
     pthread_mutex_init (&FixStrHeap.lock, NULL);
 #endif
     return TRUE;
@@ -106,7 +106,7 @@ BOOL mg_InitFixStr (void)
 
 void mg_TerminateFixStr (void)
 {
-#ifdef _MGRM_THREADS
+#ifdef _MGHAVE_VIRTUAL_WINDOW
     pthread_mutex_destroy (&FixStrHeap.lock);
 #endif
     free (FixStrHeap.heap[0]);
@@ -154,7 +154,7 @@ char* GUIAPI FixStrAlloc (int len)
     // ..
     // if i == 0; then bufflen = 512
 
-#ifdef _MGRM_THREADS
+#ifdef _MGHAVE_VIRTUAL_WINDOW
     pthread_mutex_lock (&FixStrHeap.lock);
 #endif
 
@@ -166,7 +166,7 @@ char* GUIAPI FixStrAlloc (int len)
         for(j = 0; j < 8; j++) {
             if (*bitmap & (0x80 >> j)) {
                 *bitmap &= (~(0x80 >> j));
-#ifdef _MGRM_THREADS
+#ifdef _MGHAVE_VIRTUAL_WINDOW
                 pthread_mutex_unlock (&FixStrHeap.lock);
 #endif
 #if 0
@@ -181,7 +181,7 @@ char* GUIAPI FixStrAlloc (int len)
         bitmap++;
     }
 
-#ifdef _MGRM_THREADS
+#ifdef _MGHAVE_VIRTUAL_WINDOW
     pthread_mutex_unlock (&FixStrHeap.lock);
 #endif
     return (char*)malloc (len + 1);
@@ -216,7 +216,7 @@ void GUIAPI FreeFixStr (char* str)
     // if i == 0; then bufflen = 512
     bufflen = 1 << (NR_HEAP + 1 - i);
 
-#ifdef _MGRM_THREADS
+#ifdef _MGHAVE_VIRTUAL_WINDOW
     pthread_mutex_lock (&FixStrHeap.lock);
 #endif
     heap = FixStrHeap.heap[i];
@@ -236,7 +236,7 @@ void GUIAPI FreeFixStr (char* str)
     bitmap = bitmap + (stroff>>3);
     *bitmap |= (0x80 >> (stroff%8));
 
-#ifdef _MGRM_THREADS
+#ifdef _MGHAVE_VIRTUAL_WINDOW
     pthread_mutex_unlock (&FixStrHeap.lock);
 #endif
 }

src/kernel/init-lite.c

@@ -386,7 +386,7 @@ int InitGUI (int argc, const char* agr[])
 
     /* Since 5.0.0
        allocate message queue for desktop thread before starting client. */
-    if (!(__mg_dsk_msg_queue = mg_AllocMsgQueueForThisThread ()) ) {
+    if (!(__mg_dsk_msg_queue = mg_AllocMsgQueueForThisThread (TRUE)) ) {
         err_message (step, "Failed to allocate message queue!");
         return step;
     }

src/kernel/init.c

@@ -391,14 +391,6 @@ static BOOL InstallSEGVHandler (void)
 #include <locale.h>
 #endif
 
-static IDLEHANDLER std_idle_handler;
-
-static BOOL idle_handler_for_main_thread (MSGQUEUE *msg_queue, BOOL wait)
-{
-    __mg_update_tick_count (NULL);
-    return std_idle_handler (msg_queue, wait);
-}
-
 int GUIAPI InitGUI (int args, const char *agr[])
 {
     char engine [LEN_ENGINE_NAME + 1];
@@ -570,6 +562,13 @@ int GUIAPI InitGUI (int args, const char *agr[])
 
     _is_minigui_running = 1;
 
+    /* init timer for tick counter */
+    step++;
+    if (!mg_InitTimer()) {
+        _ERR_PRINTF ("KERNEL>InitGUI: failed to start time counter\n");
+        goto failure;
+    }
+
     step++;
     if (!SystemThreads()) {
         _ERR_PRINTF ("KERNEL>InitGUI: failed to init system threads!\n");
@@ -578,23 +577,11 @@ int GUIAPI InitGUI (int args, const char *agr[])
 
     /* init message queue of main GUI thread */
     step++;
-    if (!(msg_queue = mg_AllocMsgQueueForThisThread ())) {
+    if (!(msg_queue = mg_AllocMsgQueueForThisThread (TRUE))) {
         _ERR_PRINTF ("KERNEL>InitGUI: failed to allocate message queue!\n");
         goto failure;
     }
 
-    /* for threads mode, the idle handler for the main threads should
-       call __mg_update_tick_count () */
-    std_idle_handler = msg_queue->OnIdle;
-    msg_queue->OnIdle = idle_handler_for_main_thread;
-
-    /* init timer for tick counter */
-    step++;
-    if (!mg_InitTimer (FALSE)) {
-        _ERR_PRINTF ("KERNEL>InitGUI: failed to start time counter\n");
-        goto failure;
-    }
-
     SetKeyboardLayout ("default");
 
     SetCursor (GetSystemCursor (IDC_ARROW));
@@ -615,7 +602,9 @@ failure1:
 
 void GUIAPI TerminateGUI (int not_used)
 {
-    mg_TerminateTimer (FALSE);
+    mg_TerminateTimer ();
+
+    mg_FreeMsgQueueForThisThread (TRUE);
 
     /* Since 5.0.0 */
     SendNotifyMessage (HWND_DESKTOP, MSG_ENDSESSION, 0, 0);
@@ -655,8 +644,6 @@ void GUIAPI TerminateGUI (int not_used)
     miFreeArcCache ();
 #endif
 
-    mg_FreeMsgQueueForThisThread ();
-
     deleteThreadInfoKey ();
 
     mg_TerminateSliceAllocator();

src/kernel/message.c

@@ -60,7 +60,6 @@
 #include "gdi.h"
 #include "window.h"
 
-#include "blockheap.h"
 #include "cliprect.h"
 #include "gal.h"
 #include "internals.h"
@@ -159,7 +158,7 @@ void mg_DestroyFreeQMSGList (void)
 pthread_key_t __mg_threadinfo_key;
 #endif
 
-MSGQUEUE* mg_AllocMsgQueueForThisThread (void)
+MSGQUEUE* mg_AllocMsgQueueForThisThread (BOOL sign_in)
 {
     MSGQUEUE* pMsgQueue;
 
@@ -177,13 +176,14 @@ MSGQUEUE* mg_AllocMsgQueueForThisThread (void)
     pthread_setspecific (__mg_threadinfo_key, pMsgQueue);
 #endif
 
-    // register this new message queue
-    SendMessage (HWND_DESKTOP, MSG_MANAGE_MSGTHREAD,
-            MSGTHREAD_SIGNIN, (LPARAM)pMsgQueue);
+    if (sign_in) {
+        SendMessage (HWND_DESKTOP, MSG_MANAGE_MSGTHREAD,
+                MSGTHREAD_SIGNIN, (LPARAM)pMsgQueue);
+    }
     return pMsgQueue;
 }
 
-void mg_FreeMsgQueueForThisThread (void)
+void mg_FreeMsgQueueForThisThread (BOOL sign_off)
 {
     MSGQUEUE* pMsgQueue;
 
@@ -194,6 +194,11 @@ void mg_FreeMsgQueueForThisThread (void)
             _WRN_PRINTF ("there are still some windows not destroyed\n");
         }
 
+        if (sign_off) {
+            SendMessage (HWND_DESKTOP, MSG_MANAGE_MSGTHREAD,
+                    MSGTHREAD_SIGNOUT, (LPARAM)pMsgQueue);
+        }
+
         mg_DestroyMsgQueue (pMsgQueue);
         free (pMsgQueue);
 
@@ -823,8 +828,9 @@ checkagain:
                 goto got_ret;
             }
         }
-        else
+        else {
             pMsgQueue->dwState &= ~QS_POSTMSG;
+        }
     }
 
     /*
@@ -949,6 +955,12 @@ checkagain:
 
         goto checkagain;
     }
+    else {
+        /* no message, wait again. */
+        if (pMsgQueue->OnIdle && !pMsgQueue->OnIdle (pMsgQueue, FALSE)) {
+            handle_idle_message (pMsgQueue);
+        }
+    }
 #else   /* defined _MGHAVE_VIRTUAL_WINDOW */
     /* no message, idle */
     if (bWait) {
@@ -958,6 +970,11 @@ checkagain:
         }
         goto checkagain;
     }
+    else {
+        if (!pMsgQueue->OnIdle (pMsgQueue, FALE)) {
+            handle_idle_message (pMsgQueue);
+        }
+    }
 #endif  /* not defined _MGHAVE_VIRTUAL_WINDOW */
 
     /* no message */
@@ -1410,6 +1427,9 @@ LRESULT GUIAPI DispatchMessage (PMSG pMsg)
    to the controls of the main window will be thrown away as well. */
 int __mg_throw_away_messages (PMSGQUEUE pMsgQueue, HWND hWnd)
 {
+    /* For a main window, we use pMainWin to check whether we
+       should throw away a message for controls of the main window.
+       Note that checkAndGetMainWindowIfControl returns NULL for non control. */
     PMAINWIN    pMainWin = (PMAINWIN)hWnd;
     PMSG        pMsg;
     PQMSG       pQMsg;
@@ -1421,16 +1441,6 @@ int __mg_throw_away_messages (PMSGQUEUE pMsgQueue, HWND hWnd)
 
     LOCK_MSGQ (pMsgQueue);
 
-    /* for virtual window and main window, use pMainWin to check whether we
-       should throw away a message for controls of a main window.
-       checkAndGetMainWindowIfControl returns NULL for non control. */
-    if (pMainWin != HWND_NULL && pMainWin != HWND_INVALID &&
-            (pMainWin->WinType == TYPE_MAINWIN ||
-             pMainWin->WinType == TYPE_VIRTWIN))
-        pMainWin = (PMAINWIN)hWnd;
-    else
-        pMainWin = NULL;
-
     if (pMsgQueue->pFirstNotifyMsg) {
         PQMSG pPrev = NULL, pNext;
         pQMsg = pMsgQueue->pFirstNotifyMsg;

src/kernel/zorder.c

@@ -243,11 +243,23 @@ int __kernel_alloc_z_order_info (int nr_topmosts, int nr_normals, BOOL with_mask
 #endif  /* deprecated code */
 
 #ifdef _MGRM_THREADS
-#ifndef __NOUNIX__
+# ifdef __ZI_USE_RWLOCK
     pthread_rwlock_init(&__mg_zorder_info->rwlock, NULL);
-#else
-    pthread_mutex_init(&__mg_zorder_info->rwlock, NULL);
-#endif
+    __mg_zorder_info->rwlock_owner = 0;
+# else
+    do {
+        int ret;
+        pthread_mutexattr_t my_attr;
+        ret = pthread_mutexattr_init(&my_attr);
+        assert(ret == 0);
+        ret = pthread_mutexattr_settype(&my_attr, PTHREAD_MUTEX_RECURSIVE);
+        assert(ret == 0);
+        pthread_mutex_init(&__mg_zorder_info->mutex, &my_attr);
+        ret = pthread_mutexattr_destroy(&my_attr);
+        assert(ret == 0);
+        (void)ret;
+    } while (0);
+#  endif
 #endif
     return 0;
 #endif
@@ -261,11 +273,11 @@ void __kernel_free_z_order_info (ZORDERINFO* zi)
 #else
 
 #ifdef _MGRM_THREADS
-#ifndef __NOUNIX__
+# ifdef __ZI_USE_RWLOCK
     pthread_rwlock_destroy(&zi->rwlock);
-#else
-    pthread_mutex_destroy(&zi->rwlock);
-#endif
+# else
+    pthread_mutex_destroy(&zi->mutex);
+# endif
 #endif
     free (zi);
     __mg_zorder_info = NULL;

src/misc/Makefile.am

@@ -7,7 +7,7 @@ EXTRA_DIST= misc.c systext.c rwops.c endianrw.c nposix.c clipboard.c \
 
 libmisc_la_SOURCES = misc.c systext.c rwops.c endianrw.c nposix.c clipboard.c \
                 math.c about.c license.c anon_file.c rbtree.c map.c \
-                error.c sockio.c
+                error.c sockio.c lock_file.c
 
 SRC_FILES = $(libmisc_la_SOURCES)
 LIB_NAME=libmisc

src/misc/about.c

@@ -114,7 +114,7 @@ static LRESULT AboutWinProc (HWND hWnd, UINT message,
         DrawText (hdc,
                 "MiniGUI -- a mature cross-platform windowing system "
                 "and GUI support system for embedded or IoT devices.\n\n"
-                "Copyright (C) 2002 ~ 2020 FMSoft Co., Ltd.",
+                "Copyright (C) 2002 ~ 2023 FMSoft Co., Ltd.",
                 -1, &rcClient, DT_WORDBREAK | DT_CENTER);
 
         EndPaint (hWnd, hdc);

src/misc/lock_file.c

@@ -0,0 +1,112 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+//                          IMPORTANT NOTICE
+//
+// The following open source license statement does not apply to any
+// entity in the Exception List published by FMSoft.
+//
+// For more information, please visit:
+//
+// https://www.fmsoft.cn/exception-list
+//
+//////////////////////////////////////////////////////////////////////////////
+/*
+ *   This file is part of MiniGUI, a mature cross-platform windowing
+ *   and Graphics User Interface (GUI) support system for embedded systems
+ *   and smart IoT devices.
+ *
+ *   Copyright (C) 2023, Beijing FMSoft Technologies Co., Ltd.
+ *
+ *   This program is free software: you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation, either version 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ *   Or,
+ *
+ *   As this program is a library, any link to this program must follow
+ *   GNU General Public License version 3 (GPLv3). If you cannot accept
+ *   GPLv3, you need to be licensed from FMSoft.
+ *
+ *   If you have got a commercial license of this program, please use it
+ *   under the terms and conditions of the commercial license.
+ *
+ *   For more information about the commercial license, please refer to
+ *   <http://www.minigui.com/blog/minigui-licensing-policy/>.
+ */
+/*
+** lock_file.c: This file include functions for locking/unlocking a file.
+**
+** Create date: 2023/09/10
+**
+** Current maintainer: Wei Yongming.
+*/
+
+#include "common.h"
+
+#ifndef __NOUNIX__
+
+#include "misc.h"
+
+#include <unistd.h>
+#include <sys/file.h>
+#include <fcntl.h>
+#include <errno.h>
+
+void __mg_lock_file_for_read(int fd)
+{
+    struct flock lock;
+
+    lock.l_type = F_RDLCK;
+    lock.l_whence = SEEK_SET;
+    lock.l_start = 0;
+    lock.l_len = 0;
+
+    while (fcntl(fd, F_SETLKW, &lock) == -1 && errno == EINTR);
+}
+
+void __mg_unlock_file_for_read(int fd)
+{
+    struct flock lock;
+
+    lock.l_type = F_UNLCK;
+    lock.l_whence = SEEK_SET;
+    lock.l_start = 0;
+    lock.l_len = 0;
+
+    fcntl(fd, F_SETLK, &lock);
+}
+
+void __mg_lock_file_for_write(int fd)
+{
+    struct flock lock;
+
+    lock.l_type = F_WRLCK;
+    lock.l_whence = SEEK_SET;
+    lock.l_start = 0;
+    lock.l_len = 0;
+
+    while (fcntl(fd, F_SETLKW, &lock) == -1 && errno == EINTR);
+}
+
+void __mg_unlock_file_for_write(int fd)
+{
+    struct flock lock;
+
+    lock.l_type = F_UNLCK;
+    lock.l_whence = SEEK_SET;
+    lock.l_start = 0;
+    lock.l_len = 0;
+
+    fcntl(fd, F_SETLK, &lock);
+}
+
+#endif /* __NOUNIX__ */

src/misc/map.c

@@ -243,7 +243,7 @@ map_entry_t* __mg_map_find (map_t* map, const void* key)
     return entry;
 }
 
-int __mg_map_erase (map_t* map, void* key)
+int __mg_map_erase (map_t* map, const void* key)
 {
     int retval = -1;
     map_entry_t* entry = NULL;
@@ -299,7 +299,7 @@ ret:
     return retval;
 }
 
-int __mg_map_insert_ex (map_t* map, const void* key,
+map_entry_t*  __mg_map_insert_ex2 (map_t* map, const void* key,
         const void* val, free_val_fn free_val_alt)
 {
     map_entry_t **pentry;
@@ -307,7 +307,7 @@ int __mg_map_insert_ex (map_t* map, const void* key,
     map_entry_t *parent;
 
     if (map == NULL)
-        return -1;
+        return NULL;
 
     WRLOCK_MAP (map);
 
@@ -317,7 +317,7 @@ int __mg_map_insert_ex (map_t* map, const void* key,
 
     while (*pentry) {
         int ret;
-       
+
         if (map->comp_key)
             ret = map->comp_key (key, (*pentry)->key);
         else
@@ -354,7 +354,7 @@ int __mg_map_insert_ex (map_t* map, const void* key,
     }
 
     UNLOCK_MAP (map);
-    return 0;
+    return entry;
 }
 
 int __mg_map_find_replace_or_insert (map_t* map, const void* key,

src/misc/nposix.c

@@ -495,28 +495,6 @@ DWORD __mg_os_get_time_ticks (void)
     return (current - startup_time_win32) / 10;
 }
 
-#if 0   /* deprecated code */
-DWORD __mg_os_get_elapsed_ms (void)
-{
-    static DWORD last;
-    DWORD current = timeGetTime();
-    DWORD elapsed;
-
-    if (current >= last) {
-        elapsed = current - last;
-        return elapsed;
-    }
-    else {
-        /* overflowed */
-        elapsed = BITMASK_DWORD - last;
-        elapsed += current;
-    }
-
-    last = current;
-    return elapsed;
-}
-#endif  /* deprecated code */
-
 #elif defined (HAVE_CLOCK_GETTIME)
 
 static struct timespec timeval_startup;
@@ -573,68 +551,6 @@ DWORD __mg_os_get_time_ticks (void)
     return ds * 100 + dms;
 }
 
-#if 0   /* deprecated code */
-DWORD __mg_os_get_elapsed_ms (void)
-{
-    static struct timespec last;
-    DWORD ds, dms;
-    struct timespec current;
-
-    clock_gettime (CLOCK_MONOTONIC, &current);
-    ds = (current.tv_sec - last.tv_sec);
-
-    if (current.tv_sec == last.tv_sec) {
-        dms = (current.tv_nsec - last.tv_nsec) / 1000000L;
-    }
-    else if (current.tv_nsec >= last.tv_nsec) {
-        dms = (current.tv_nsec - last.tv_nsec) / 1000000L;
-    }
-    else {
-        assert (ds > 0);
-
-        ds--;
-        dms = 1000L - (last.tv_nsec - current.tv_nsec) / 1000000L;
-    }
-
-    last = current;
-    return ds * 1000 + dms;
-}
-
-#include <unistd.h>
-#include <poll.h>
-#include <sys/time.h>
-
-static struct timeval timeval_startup;
-void __mg_os_start_time(void)
-{
-    gettimeofday(&timeval_startup, NULL);
-}
-
-DWORD __mg_os_get_time_ms(void)
-{
-    DWORD ds, dms;
-    struct timeval current;
-
-    gettimeofday(&current, NULL);
-    ds = (current.tv_sec - timeval_startup.tv_sec);
-
-    if (current.tv_sec == timeval_startup.tv_sec) {
-        dms = (current.tv_usec - timeval_startup.tv_usec) / 1000L;
-    }
-    else if (current.tv_usec >= timeval_startup.tv_usec) {
-        dms = (current.tv_usec - timeval_startup.tv_usec) / 1000L;
-    }
-    else {
-        assert(ds > 0);
-
-        ds--;
-        dms = 1000L - (timeval_startup.tv_usec - current.tv_usec) / 1000L;
-    }
-
-    return ds * 1000 + dms;
-}
-#endif  /* deprecated code */
-
 #else   /* defined HAVE_CLOCK_GETTIME */
 
 #error "Please implement __mg_os_start_time and __mg_os_get_time_ticks for your OS"

src/mybmp/mybmp.c

@@ -96,8 +96,12 @@ static BITMAP_TYPE_INFO bitmap_types [MAX_BITMAP_TYPES] =
    { "jpeg", __mg_init_jpg, __mg_load_jpg, __mg_cleanup_jpg, __mg_save_jpg, __mg_check_jpg },
 #endif
 #ifdef _MGIMAGE_PNG
+#if _MGLIBPNG_VER == 16
+   { "png", __mg_init_png, __mg_load_png, __mg_cleanup_png, __mg_save_png, __mg_check_png },
+#else
    { "png", __mg_init_png, __mg_load_png, __mg_cleanup_png, NULL, __mg_check_png },
 #endif
+#endif
 #ifdef _MGIMAGE_WEBP
    { "webp", __mg_init_webp, __mg_load_webp, __mg_cleanup_webp, NULL, __mg_check_webp },
 #endif
@@ -187,7 +191,8 @@ int __mg_bmp_compute_pitch(int bpp, Uint32 width, Uint32 *pitch, BOOL does_round
     return bytespp;
 }
 
-void* GUIAPI InitMyBitmapSL (MG_RWops* area, const char* ext, MYBITMAP* my_bmp, RGB* pal)
+void* GUIAPI
+InitMyBitmapSL (MG_RWops* area, const char* ext, MYBITMAP* my_bmp, RGB* pal)
 {
     int type;
     LOAD_MYBITMAP_INFO* load_info;
@@ -209,8 +214,11 @@ void* GUIAPI InitMyBitmapSL (MG_RWops* area, const char* ext, MYBITMAP* my_bmp,
     my_bmp->frames = 1;
     my_bmp->depth = GetGDCapability (HDC_SCREEN, GDCAP_BPP) << 3;
 
+    // initialize the palette with the screen palette.
     if (my_bmp->depth <= 8)
         GetPalette (HDC_SCREEN, 0, 256, (GAL_Color*)pal);
+    else
+        memset (pal, 0, sizeof(RGB) * 256); // reset the palette.
 
     /* This is just for gray screen. If your screen is gray,
      * please define this macro _GRAY_SCREEN.

src/mybmp/webp.c

@@ -15,7 +15,7 @@
  *   and Graphics User Interface (GUI) support system for embedded systems
  *   and smart IoT devices.
  *
- *   Copyright (C) 2002~2021, Beijing FMSoft Technologies Co., Ltd.
+ *   Copyright (C) 2002~2022, Beijing FMSoft Technologies Co., Ltd.
  *   Copyright (C) 1998~2002, WEI Yongming
  *
  *   This program is free software: you can redistribute it and/or modify
@@ -106,7 +106,8 @@ void* __mg_init_webp(MG_RWops *fp, MYBITMAP *mybmp, RGB *pal)
         else
             goto error;
 
-        sc = WebPGetFeatures(info->data, info->sz_data, &info->config.input);
+        sc = WebPGetFeatures((const uint8_t *)info->data, info->sz_data,
+                &info->config.input);
         if (sc == VP8_STATUS_OK) {
             break;
         }
@@ -210,7 +211,8 @@ int __mg_load_webp(MG_RWops *fp, void *init_info, MYBITMAP *mybmp,
     while (1) {
         int n;
 
-        VP8StatusCode status = WebPIAppend(idec, info->data, info->sz_data);
+        VP8StatusCode status = WebPIAppend(idec,
+                (const uint8_t *)info->data, info->sz_data);
         if (status != VP8_STATUS_OK && status != VP8_STATUS_SUSPENDED) {
             _ERR_PRINTF ("__mg_load_webp: WebPIAppend failed: %d\n", status);
             rc = ERR_BMP_LOAD;