Merge branch 'rel-5-0'

when creating system logfonts, but the orientation is ignored for the system logfont.

README.md

@@ -72,7 +72,7 @@ It greatly reduces the size and resource consumption of the entire solution, imp
 [HybridOS] is another large open source project initiated by FMSoft.
 It is an open source operating system designed for embedded/AIoT devices and cloud computing environment.
 
-HybridOS provides the complete software stack and the app framework based on HVML for embedded systems.
+HybridOS provides the complete software stack and the app framework based on [HVML] for embedded systems.
 You can easily develop your products which has rich functions and excellent expressiveness by using HybridOS.
 
 In practice, MiniGUI and the software which are used to integrated with GPU constitute the graphics stack of HybridOS.
@@ -85,13 +85,13 @@ The following chart shows the graphics stack of HybridOS:
   -----------------------------------------------
  |               MiniGUI/HVML Apps               |
  |-----------------------------------------------|
- |           |         (Graphics Stack)          |
- |           |              ---------------------|
- |           |              | hiMesa             |
- |           | hiCairo      |  ------------------|
- |           | MiniGUI      |  | EGL for MiniGUI |
- | C++ libs  | hiDRMDrivers |  | GL, GLES, VG    |
- | C libs    | libDRM       |  | GPU drivers     |
+ |          |         (Graphics Stack)           |
+ |          |                --------------------|
+ |          |               |    Mesa-HBD        |
+ |          | Cairo-HBD     |  ------------------|
+ |          | MiniGUI       |  | EGL for MiniGUI |
+ | C++ libs | HBDDRMDrivers |  | GL, GLES, VG    |
+ | C libs   | libDRM        |  | GPU drivers     |
  |-----------------------------------------------|
  |  Linux Kernel                                 |
  |            -----------------------------------|
@@ -102,10 +102,10 @@ The following chart shows the graphics stack of HybridOS:
 As shown in the chart above, the HybridOS graphics stack consists of the following software:
 
 - `libDRM` provides some user land APIs for Linux Direct Rendering Infrastructure.
-- `hiDRMDrivers` contains the drivers (user land drivers, not kernel drivers) for
+- `HBDDRMDrivers` contains the drivers (user land drivers, not kernel drivers) for
    MiniGUI DRM engine. The drivers implement the basic hardware accelerated
    2D graphics operations of various GPUs for MiniGUI.
-- `hiMesa` is the Mesa derivative for HybridOS, while Mesa is the open source
+- `Mesa-HBD` is the Mesa derivative for HybridOS, while Mesa is the open source
   implementation of OpenGL and other graphics APIs, including OpenGL ES
   (versions 1, 2, 3), OpenCL, OpenMAX, and Vulkan. It contains the following
   components:
@@ -113,13 +113,17 @@ As shown in the chart above, the HybridOS graphics stack consists of the followi
      graphics APIs.
    + The EGL implementation for MiniGUI platform.
    + The graphics drivers for various GPUs and a software driver called `swrast`.
-- `hiCairo` is the Cairo derivative for HybridOS. Cairo is a 2D vector graphics
+- `Cairo-HBD` is the Cairo derivative for HybridOS. Cairo is a 2D vector graphics
   library for Gtk. We provide support for MiniGUI backend in `hiCairo`.
 
 For more information about HybridOS, please refer to:
 
 <https://hybridos.fmsoft.cn/>
 
+For more information about HVML, please refer to:
+
+<https://hvml.fmsoft.cn/> or <https://www.hvml.org>
+
 ### Source Code Repositories
 
 FMSoft had created the public repositories for MiniGUI Core, MiniGUI
@@ -456,7 +460,7 @@ for examples:
 
 ## HISTORY
 
-21 years have pasted since MiniGUI was initially created at
+27 years have pasted since MiniGUI was initially created at
 the end of 1998, and now it becomes much reliable and stable.
 During the past years, many remarkable changes have taken place in
 the MiniGUI project.
@@ -561,13 +565,15 @@ A brief history description of the development progress is listed as follow:
 1. May., 2021:     FMSoft released MiniGUI version 5.0.6.
 1. Jan., 2022:     FMSoft released MiniGUI version 5.0.9.
 1. Sep., 2022:     FMSoft released MiniGUI version 5.0.10.
+1. Aug., 2023:     FMSoft released MiniGUI version 5.0.13.
+1. May., 2025:     FMSoft released MiniGUI version 5.0.15.
 
 ## AUTHORS AND COPYING
 
 The original author of MiniGUI is Vincent Wei, and now MiniGUI is maintained by FMSoft.
 For more information, please refer to <http://www.fmsoft.cn>.
 
-Copyright (C) 2002 ~ 2022, Beijing FMSoft Technologies Co., Ltd.  
+Copyright (C) 2002 ~ 2025, Beijing FMSoft Technologies Co., Ltd.  
 Copyright (C) 1998 ~ 2002, Vincent Wei
 
 This program is free software: you can redistribute it and/or modify
@@ -645,13 +651,12 @@ A: Yes, FMSoft can provide you with guaranteed commercial technical
 [FMSoft Technologies]: https://www.fmsoft.cn
 [FMSoft]: https://www.fmsoft.cn
 [HybridOS Official Site]: https://hybridos.fmsoft.cn
-[MiniGUI Official Site]: https://hvml.fmsoft.cn
+[MiniGUI Official Site]: https://minigui.fmsoft.cn
 [HVML Official Site]: https://hvml.fmsoft.cn
 [Vincent Wei]: https://github.com/VincentWei
 
-[MiniGUI]: https://github.com/VincentWei/MiniGUI
-[HybridOS]: https://github.com/FMSoftCN/HybridOS
-
+[MiniGUI]: https://github.com/VincentWei
+[HybridOS]: https://github.com/HybridOS2
 [HVML]: https://github.com/HVML
 [PurC]: https://github.com/HVML/PurC
 [xGUI Pro]: https://github.com/HVML/xGUI-Pro

RELEASE-NOTES.md

@@ -1,5 +1,13 @@
 # Release Notes
 
+- [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)
@@ -26,6 +34,79 @@
    + [Changes leading to incompatibility](#changes-leading-to-incompatibility)
    + [Deprecated APIs](#deprecated-apis)
 
+## 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,

Version.md

@@ -1,4 +1,4 @@
-Version 5.0.9 (2022/01/14)
+Version 5.0.15 (2025/05/09)
 
 This is a minor enhancement and bugfix release of MiniGUI 5.0.x, the stable version.
 

configure.ac

@@ -1,6 +1,6 @@
 dnl Process this file with autoconf to produce a configure script.
 AC_PREREQ(2.60)
-AC_INIT(libminigui, 5.0.10)
+AC_INIT(libminigui, 5.0.15)
 AC_CONFIG_SRCDIR(src/main/main.c)
 
 dnl Set various version strings - taken gratefully from the SDL sources
@@ -16,7 +16,7 @@ dnl Set various version strings - taken gratefully from the SDL sources
 #
 MINIGUI_MAJOR_VERSION=5
 MINIGUI_MINOR_VERSION=0
-MINIGUI_MICRO_VERSION=10
+MINIGUI_MICRO_VERSION=15
 MINIGUI_INTERFACE_AGE=0
 MINIGUI_BINARY_AGE=0
 MINIGUI_VERSION=$MINIGUI_MAJOR_VERSION.$MINIGUI_MINOR_VERSION.$MINIGUI_MICRO_VERSION
@@ -62,7 +62,7 @@ dnl ========================================================================
 dnl Checks for header files.
 AC_HEADER_STDC
 AC_HEADER_DIRENT
-AC_CHECK_HEADERS(limits.h math.h locale.h unistd.h termio.h sys/types.h sys/time.h sys/select.h sys/memfd.h)
+AC_CHECK_HEADERS(limits.h math.h stdatomic.h locale.h unistd.h termio.h sys/types.h sys/time.h sys/select.h sys/memfd.h)
 
 dnl Checks for typedefs, structures, and compiler characteristics.
 AC_C_CONST
@@ -95,7 +95,7 @@ message_string="no"
 osname="unspecified"
 runtime_mode="procs"
 compositing_schema="yes"
-virtual_window="no"
+virtual_window="yes"
 use_shmopen="no"
 mgslice_use_fallback="no"
 
@@ -1704,12 +1704,12 @@ fi
 
 CPPFLAGS="$CPPFLAGS -D__MINIGUI_LIB__"
 
-surface_schema="shared frame buffer"
+surface_schema="shared"
 case "$runtime_mode" in
     sa)
         AC_DEFINE(_MGRM_STANDALONE, 1,
             [Define if build MiniGUI-Standalone])
-        MINIGUI_RUNMODE="sa"
+        MINIGUI_RUNMODE="standalone"
         RUNMODE_LADD="standalone/libstandalone.la"
         RUNMODE_SUBDIRS="standalone"
     ;;
@@ -1717,13 +1717,13 @@ case "$runtime_mode" in
         AC_DEFINE(_MGRM_THREADS, 1,
             [Define if build MiniGUI-Threads])
         CPPFLAGS="$CPPFLAGS -D_REENTRANT"
-        MINIGUI_RUNMODE="ths"
+        MINIGUI_RUNMODE="threads"
         virtual_window="yes"
     ;;
     *)
         AC_DEFINE(_MGRM_PROCESSES, 1,
             [Define if build MiniGUI-Processes])
-        MINIGUI_RUNMODE="procs"
+        MINIGUI_RUNMODE="processes"
         RUNMODE_LADD="server/libserver.la client/libclient.la"
         RUNMODE_SUBDIRS="server client"
         if test "x$compositing_schema" = "xyes"; then
@@ -2664,6 +2664,7 @@ if test "x$no_math" = "xno"; then
 fi
 
 DEP_LIBS="$DEP_LIBS -lpthread"
+MINIGUI_RUNMODE="$MINIGUI_RUNMODE-${surface_schema}"
 
 AC_SUBST(VIDEO_SUBDIRS)
 AC_SUBST(VIDEO_DRIVERS)

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=ccw
-#}}
-
 #{{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
      * @{
@@ -2347,6 +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/exstubs.h

@@ -84,6 +84,14 @@ extern "C" {
      * @{
      */
 
+/** The current version of DRM driver. */
+#define DRM_DRIVER_VERSION  2
+
+#define DRM_SURBUF_TYPE_OFFSCREEN       0x0000
+#define DRM_SURBUF_TYPE_SHADOW          0x0001
+#define DRM_SURBUF_TYPE_SCANOUT         0x0002
+#define DRM_SURBUF_TYPE_MASK            0x000F
+
 /**
  * The struct type represents the DRI sub driver.
  * The concrete struct should be defined by the driver.
@@ -129,6 +137,8 @@ typedef struct _DrmSurfaceBuffer {
     uint32_t dumb:1;
     /** Is it a scanout buffer. Since 5.0.0. */
     uint32_t scanout:1;
+    /** The buffer is also a dma-buf. Since 5.0.13. */
+    uint32_t dma_buf:1;
 
     /** The width of the buffer. */
     uint32_t width;
@@ -154,11 +164,23 @@ typedef struct _DrmSurfaceBuffer {
       * The address of the pixel data:
       *     uint8_t* pixels = this->buff + this->offset;
       */
-    uint8_t* buff;
+    uint8_t* vaddr;
 } DrmSurfaceBuffer;
 
+typedef struct _DrmBlitOperations {
+    BlitCopyOperation   cpy;
+    BlitKeyOperation    key;
+    BlitAlphaOperation  alf;
+    ColorBlendMethod    bld;
+    ColorLogicalOp      rop;
+    ScalingFilter       scl;
+
+    uint32_t            key_min, key_max;
+    uint8_t             alpha;
+} DrmBlitOperations;
+
 /**
- * The structure type defines the operations for a DRM driver.
+ * The structure type defines the operations for a userland DRM driver.
  */
 typedef struct _DrmDriverOps {
     /**
@@ -176,12 +198,13 @@ typedef struct _DrmDriverOps {
     void (*destroy_driver) (DrmDriver *driver);
 
     /**
-     * This operation flushes the batch buffer of the driver or
-     * the hardware cache.
+     * This operation flushes the batch buffer of the driver and/or
+     * the specified buffer.
      *
      * \note This operation can be NULL.
      */
-    void (* flush_driver) (DrmDriver *driver);
+    void (* flush) (DrmDriver *driver, DrmSurfaceBuffer* buff,
+            const GAL_Rect *dirty_rect);
 
     /**
      * This operation creates a surface buffer with the specified pixel format,
@@ -194,7 +217,7 @@ typedef struct _DrmDriverOps {
      */
     DrmSurfaceBuffer* (* create_buffer) (DrmDriver *driver,
             uint32_t drm_format, uint32_t hdr_size,
-            uint32_t width, uint32_t height);
+            uint32_t width, uint32_t height, unsigned flags);
 
     /**
      * This operation creates a buffer from a given and possibly foreign handle
@@ -207,7 +230,9 @@ typedef struct _DrmDriverOps {
      *  DrmSurfaceBuffer object.
      */
     DrmSurfaceBuffer* (* create_buffer_from_handle) (DrmDriver *driver,
-            uint32_t handle, size_t size);
+            uint32_t handle, size_t size,
+            uint32_t drm_format, uint32_t hdr_size,
+            uint32_t width, uint32_t height, uint32_t pitch);
 
     /**
      * This operation creates a buffer for the given system global name
@@ -219,7 +244,9 @@ typedef struct _DrmDriverOps {
      *  DrmSurfaceBuffer object.
      */
     DrmSurfaceBuffer* (* create_buffer_from_name) (DrmDriver *driver,
-            uint32_t name);
+            uint32_t name,
+            uint32_t drm_format, uint32_t hdr_size,
+            uint32_t width, uint32_t height, uint32_t pitch);
 
     /**
      * This operation creates a buffer for the given PRIME file descriptor
@@ -231,21 +258,19 @@ typedef struct _DrmDriverOps {
      *  DrmSurfaceBuffer object.
      */
     DrmSurfaceBuffer* (* create_buffer_from_prime_fd) (DrmDriver *driver,
-            int prime_fd, size_t size);
+            int prime_fd, size_t size,
+            uint32_t drm_format, uint32_t hdr_size,
+            uint32_t width, uint32_t height, uint32_t pitch);
 
     /**
      * This operation maps the buffer into the current process's virtual memory
      * space, and returns the virtual address. If failed, it returns NULL.
      *
-     * When \a for_scanout is not zero, the buffer will be used for scan out
-     * frame buffer.
-     *
      * \note The driver must implement this operation. The driver must
      *  set a valid value for buff field of the DrmSurfaceBuffer object
      *  on success.
      */
-    uint8_t* (* map_buffer) (DrmDriver *driver, DrmSurfaceBuffer* buffer,
-            int for_scanout);
+    uint8_t* (* map_buffer) (DrmDriver *driver, DrmSurfaceBuffer* buffer);
 
     /**
      * This operation un-maps a buffer.
@@ -264,96 +289,51 @@ typedef struct _DrmDriverOps {
     void (* destroy_buffer) (DrmDriver *driver, DrmSurfaceBuffer* buffer);
 
     /**
-     * This operation clears the specific rectangle area of a buffer
+     * This operation fills the specific rectangle area of a buffer
      * with the specific pixel value. If succeed, it returns 0.
      *
      * \note If this operation is set as NULL, the driver does not support
-     * hardware accelerated clear operation.
+     * hardware accelerated filling operation.
      */
-    int (* clear_buffer) (DrmDriver *driver,
+    int (* fill_rect) (DrmDriver *driver,
             DrmSurfaceBuffer* dst_buf, const GAL_Rect* rc, uint32_t pixel_value);
 
     /**
-     * This operation checks whether a hardware accelerated blit
+     * This operation checks whether a specified hardware accelerated blit
      * can be done between the source buffer and the destination buffer.
-     * If succeed, it returns 0.
+     * If succeed, it returns zero, otherwise for failure.
+     * If succeed, it is safe to call do_blit operation.
      *
      * \note If this operation is set as NULL, it will be supposed that
      * the driver does not support any hardware accelerated blitting operation.
      */
     int (* check_blit) (DrmDriver *driver,
-            DrmSurfaceBuffer* src_buf, DrmSurfaceBuffer* dst_buf);
-
-    /**
-     * This operation copies bits from a source buffer to a destination buffer.
-     *
-     * \note If this operation is set as NULL, the driver does not support
-     * hardware accelerated copy blitting.
-     *
-     * \note Currently, the logical operation is ignored.
-     */
-    int (* copy_blit) (DrmDriver *driver,
             DrmSurfaceBuffer* src_buf, const GAL_Rect* src_rc,
             DrmSurfaceBuffer* dst_buf, const GAL_Rect* dst_rc,
-            ColorLogicalOp logic_op);
+            const DrmBlitOperations *ops);
 
     /**
-     * This operation blits pixels from a source buffer with the source alpha
-     * value specified to a destination buffer.
-     *
-     * \note If this operation is set as NULL, the driver does not support
-     * hardware accelerated blitting with alpha.
+     * This operation does the real blit. It should not be NULL if check_blit
+     * is not NULL.
      */
-    int (* alpha_blit) (DrmDriver *driver,
-            DrmSurfaceBuffer* src_buf, const GAL_Rect* src_rc,
-            DrmSurfaceBuffer* dst_buf, const GAL_Rect* dst_rc,
-            uint8_t alpha);
+    int (* do_blit) (DrmDriver *driver,
+            DrmSurfaceBuffer *src_buf, const GAL_Rect *src_rc,
+            DrmSurfaceBuffer *dst_buf, const GAL_Rect *dst_rc,
+            const DrmBlitOperations *blit_ops);
 
     /**
-     * This operation blits pixels from a source buffer to a destination buffer,
-     * but skipping the pixel value specified by \a color_key.
+     * This operation copies the pixels from the source buffer to
+     * the destination buffer, with or without scaling, rotation, and flip.
      *
      * \note If this operation is set as NULL, the driver does not support
-     * hardware accelerated blitting with color key.
+     * hardware accelerated copy operation between buffers.
      */
-    int (* key_blit) (DrmDriver *driver,
+    int (* copy_buff) (DrmDriver *driver,
             DrmSurfaceBuffer* src_buf, const GAL_Rect* src_rc,
             DrmSurfaceBuffer* dst_buf, const GAL_Rect* dst_rc,
-            uint32_t color_key);
-
-    /**
-     * This operation blits pixels from a source buffer with the source alpha
-     * value specified to a destination buffer, but skipping the pixel value
-     * specified.
-     *
-     * \note If this operation is set as NULL, the driver does not support
-     * hardware accelerated blitting with alpha and color key.
-     */
-    int (* alpha_key_blit) (DrmDriver *driver,
-            DrmSurfaceBuffer* src_buf, const GAL_Rect* src_rc,
-            DrmSurfaceBuffer* dst_buf, const GAL_Rect* dst_rc,
-            uint8_t alpha, uint32_t color_key);
-
-    /**
-     * This operation blits pixels from a source buffer with the source alpha
-     * value of pixels to the destination buffer, and with the specified color
-     * compositing/blending method (\a ColorBlendMethod).
-     *
-     * \note If this operation is set as NULL, the driver does not support
-     * hardware accelerated blitting with alpha on basis per pixel.
-     *
-     * \note Currently, the color compositing/blending method is ignored.
-     */
-    int (* alpha_pixel_blit) (DrmDriver *driver,
-            DrmSurfaceBuffer* src_buf, const GAL_Rect* src_rc,
-            DrmSurfaceBuffer* dst_buf, const GAL_Rect* dst_rc,
-            ColorBlendMethod blend_method);
-
+            BlitCopyOperation op);
 } DrmDriverOps;
 
-/** The current version of DRM driver. */
-#define DRM_DRIVER_VERSION  1
-
 /**
  * Implement this stub to return the DRI driver operations
  *

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;
 }

include/window.h

@@ -2990,18 +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
@@ -7237,6 +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)

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/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/bidiedit.c

@@ -210,6 +210,7 @@ static void setup_dc (HWND hWnd, BIDISLEDITDATA *sled, HDC hdc, BOOL bSel)
     DWORD dwStyle = GetWindowStyle (hWnd);
 
     if (!bSel) {
+        SetBkMode (hdc, BM_TRANSPARENT);
 
         if (dwStyle & WS_DISABLED)
             SetTextColor (hdc,
@@ -583,7 +584,7 @@ static void slePaint (HWND hWnd, HDC hdc, PBIDISLEDITDATA sled)
 
             /* draw selected chars */
             setup_dc (hWnd, sled, hdc, TRUE);
-                outw += DrawACharString (hdc, startx + outw, starty,
+            outw += DrawACharString (hdc, startx + outw, starty,
                         achar_string, sled->selEnd - sled->selStart, NULL, NULL);
             achar_string += sled->selEnd - sled->selStart;
 
@@ -1069,6 +1070,7 @@ static int ascii_bidi_type[] = {
     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_ON,
+
     /*0x60~0x6f*/
     BIDI_TYPE_ON,  BIDI_TYPE_LTR, BIDI_TYPE_LTR, BIDI_TYPE_LTR,
     BIDI_TYPE_LTR, BIDI_TYPE_LTR, BIDI_TYPE_LTR, BIDI_TYPE_LTR,
@@ -1085,21 +1087,23 @@ static int ascii_bidi_type[] = {
 static int inline get_char_bidi_type (LOGFONT* logfont, Achar32 chv)
 {
     DEVFONT* devfont;
+    int bidi_type = BIDI_TYPE_LTR;
 
     if (IS_MBCHV(chv)) {
         devfont = logfont->devfonts[1];
 
         if (devfont->charset_ops->bidi_char_type) {
-            return devfont->charset_ops->bidi_char_type (chv);
-        }
-        else {
-            return BIDI_TYPE_LTR;
+            bidi_type = devfont->charset_ops->bidi_char_type (chv);
         }
     }
     else {
-        return ascii_bidi_type[chv];
+        assert(chv < 0x80);
+        bidi_type = ascii_bidi_type[chv];
     }
 
+    _DBG_PRINTF("chv: %X: bidi_type: %x\n", chv, bidi_type);
+    return bidi_type;
+
 }
 static int get_text_rl_type (PLOGFONT logfont, char* newtext, int l_char_type,
         int r_char_type, int line_type)
@@ -1108,53 +1112,60 @@ static int get_text_rl_type (PLOGFONT logfont, char* newtext, int l_char_type,
     Achar32 chv;
     chv = GetACharValue (logfont, newtext, strlen(newtext), NULL, 0);
 
-    if (chv == INV_ACHAR_VALUE)
-        return -1;
+    int type = CHAR_TYPE_UNKKOWN;
+
+    if (chv == INV_ACHAR_VALUE) {
+        goto done;
+    }
 
     bidi_type = get_char_bidi_type (logfont, chv);
 
-    if (BIDI_IS_STRONG(bidi_type))
-    {
-        if (BIDI_IS_RTL(bidi_type))
-        {
-            return CHAR_TYPE_RTL;
+    if (BIDI_IS_STRONG(bidi_type)) {
+        if (BIDI_IS_RTL(bidi_type)) {
+            type = CHAR_TYPE_RTL;
+            goto done;
         }
-        else
-        {
-            return CHAR_TYPE_LTR;
+        else {
+            type = CHAR_TYPE_LTR;
+            goto done;
         }
     }
 
-    if (BIDI_IS_NUMBER(bidi_type))
-    {
-        return CHAR_TYPE_LTR;
+    if (BIDI_IS_NUMBER(bidi_type)) {
+        type = CHAR_TYPE_LTR;
+        goto done;
     }
 
-    if (l_char_type == r_char_type)
-    {
-        return l_char_type;
+    if (l_char_type == r_char_type) {
+        type = l_char_type;
+        goto done;
     }
     /* no left char */
-    else if (l_char_type == -1)
-    {
+    else if (l_char_type == CHAR_TYPE_UNKKOWN) {
         if (BIDI_IS_WEAK (bidi_type))
-            return r_char_type;
+            type = r_char_type;
         else
-            return line_type;
+            type = line_type;
+        goto done;
     }
     /* no right char */
-    else if (r_char_type == -1)
-    {
+    else if (r_char_type == CHAR_TYPE_UNKKOWN) {
         if (BIDI_IS_WEAK (bidi_type))
-            return l_char_type;
+            type = l_char_type;
         else
-            return line_type;
+            type = line_type;
+        goto done;
     }
-    else
-    {
-        return line_type;
+    else {
+        type = line_type;
     }
 
+    _DBG_PRINTF("l_char_type: %d, r_char_type: %d, line_type: %d, "
+            "type for %X: %d\n",
+            l_char_type, r_char_type, line_type, chv, type);
+
+done:
+    return type;
 }
 
 static int get_line_rl_type (ACHARMAPINFO* map, int len)
@@ -2133,7 +2144,7 @@ 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;
@@ -2504,8 +2515,6 @@ SLEditCtrlProc (HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
         unsigned char charBuffer [4];
         int chars;
 
-        _DBG_PRINTF("get char-----------------char----%p\n", (PVOID)wParam);
-
         if (dwStyle & ES_READONLY)
             return 0;
 
@@ -2526,9 +2535,6 @@ 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]);
             }
@@ -2537,12 +2543,12 @@ SLEditCtrlProc (HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
             }
         }
 
-        if (chars == 1) {
-            if (charBuffer [0] < 0x20 && charBuffer[0] != '\b') //FIXME
-                return 0;
+        if (chars > 1) {
+            _WRN_PRINTF("BIDISLEDIT only support ISO8859-6 charset\n");
+            return 0;
         }
-
-        if (wParam == '\b') { // backspace
+        else if (charBuffer [0] == '\b' || charBuffer [0] == 0x7F) {
+            // BS or DEL
             int del = 1;
 
             if (sled->editPos == 0 && sled->selStart == sled->selEnd)
@@ -2564,9 +2570,12 @@ SLEditCtrlProc (HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
                 sleBackspaceText (hWnd, sled, del, FALSE, FALSE);
             }
         }
-        else{
+        else if (charBuffer [0] < 0x20) {
+            // ignore all other control characters.
+            return 0;
+        }
+        else {
             if (dwStyle & ES_LEFT) {
-            //if ((dwStyle&0xffff) ==  ES_LEFT) {
                 esleft_input_char_refresh(hWnd, sled, (char*)charBuffer, chars);
                 set_edit_caret_pos(hWnd, sled);
 
@@ -2586,6 +2595,7 @@ SLEditCtrlProc (HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
                 sleInsertText (hWnd, sled, (char* )charBuffer, chars, FALSE);
             }
         }
+
         return 0;
     }
 

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/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/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/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/charset.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
@@ -49,6 +49,8 @@
 ** Create date: 2000/06/13
 */
 
+#undef NDEBUG
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -233,6 +235,7 @@ static CHARSETOPS CharsetOps_ascii = {
     1,
     FONT_CHARSET_US_ASCII,
     0,
+    0,
     sb_len_first_char,
     sb_get_char_value,
     NULL,
@@ -296,6 +299,7 @@ static CHARSETOPS CharsetOps_iso8859_1 = {
     1,
     FONT_CHARSET_ISO8859_1,
     0,
+    0,
     sb_len_first_char,
     sb_get_char_value,
     NULL,
@@ -407,6 +411,7 @@ static CHARSETOPS CharsetOps_iso8859_2 = {
     1,
     FONT_CHARSET_ISO8859_2,
     0,
+    0,
     sb_len_first_char,
     sb_get_char_value,
     NULL,
@@ -519,6 +524,7 @@ static CHARSETOPS CharsetOps_iso8859_3 = {
     1,
     FONT_CHARSET_ISO8859_3,
     0,
+    0,
     sb_len_first_char,
     sb_get_char_value,
     NULL,
@@ -632,6 +638,7 @@ static CHARSETOPS CharsetOps_iso8859_4 = {
     1,
     FONT_CHARSET_ISO8859_4,
     0,
+    0,
     sb_len_first_char,
     sb_get_char_value,
     NULL,
@@ -726,6 +733,7 @@ static CHARSETOPS CharsetOps_iso8859_5 = {
     1,
     FONT_CHARSET_ISO8859_5,
     0,
+    0,
     sb_len_first_char,
     sb_get_char_value,
     NULL,
@@ -884,6 +892,7 @@ static CHARSETOPS CharsetOps_iso8859_7 = {
     1,
     FONT_CHARSET_ISO8859_7,
     0,
+    0,
     sb_len_first_char,
     sb_get_char_value,
     NULL,
@@ -969,7 +978,6 @@ static const unsigned char* iso8859_8_get_next_word (const unsigned char* mstr,
 }
 
 static BidiType __mg_iso8859_8_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,
@@ -1017,7 +1025,6 @@ static BidiType __mg_iso8859_8_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_BN,  BIDI_TYPE_BN,  BIDI_TYPE_BN,  BIDI_TYPE_BN,
@@ -1072,10 +1079,9 @@ static BidiType __mg_iso8859_8_bidi_char_type_map[] = {
 static BidiType iso8859_8_bidi_char_type (Achar32 chv)
 {
     chv = REAL_ACHAR(chv);
-    if (chv > 0x7F)
-        return (BidiType)__mg_iso8859_8_bidi_char_type_map[chv - 0x80];
-    else
-        return (BidiType)__mg_iso8859_1_bidi_char_type_map[chv];
+    assert(chv < TABLESIZE(__mg_iso8859_8_bidi_char_type_map));
+
+    return (BidiType)__mg_iso8859_8_bidi_char_type_map[chv];
 }
 
 static const BIDICHAR_MIRROR_MAP __mg_iso8859_8_mirror_table [] =
@@ -1160,6 +1166,7 @@ static CHARSETOPS CharsetOps_iso8859_8 = {
     2, // This is a trick for bidi reorder only implemented for MBC.
     FONT_CHARSET_ISO8859_8,
     0,
+    1,
     sb_len_first_char,
     sb_get_char_value,
     NULL,
@@ -1261,6 +1268,7 @@ static CHARSETOPS CharsetOps_iso8859_9 = {
     1,
     FONT_CHARSET_ISO8859_9,
     0,
+    0,
     sb_len_first_char,
     sb_get_char_value,
     NULL,
@@ -1374,6 +1382,7 @@ static CHARSETOPS CharsetOps_iso8859_10 = {
     1,
     FONT_CHARSET_ISO8859_10,
     0,
+    0,
     sb_len_first_char,
     sb_get_char_value,
     NULL,
@@ -1486,6 +1495,7 @@ static CHARSETOPS CharsetOps_iso8859_11 = {
     1,
     FONT_CHARSET_ISO8859_11,
     0,
+    0,
     sb_len_first_char,
     sb_get_char_value,
     NULL,
@@ -1598,6 +1608,7 @@ static CHARSETOPS CharsetOps_iso8859_13 = {
     1,
     FONT_CHARSET_ISO8859_13,
     0,
+    0,
     sb_len_first_char,
     sb_get_char_value,
     NULL,
@@ -1710,6 +1721,7 @@ static CHARSETOPS CharsetOps_iso8859_14 = {
     1,
     FONT_CHARSET_ISO8859_14,
     0,
+    0,
     sb_len_first_char,
     sb_get_char_value,
     NULL,
@@ -1821,6 +1833,7 @@ static CHARSETOPS CharsetOps_iso8859_15 = {
     1,
     FONT_CHARSET_ISO8859_15,
     0,
+    0,
     sb_len_first_char,
     sb_get_char_value,
     NULL,
@@ -1971,6 +1984,7 @@ static CHARSETOPS CharsetOps_iso8859_16 = {
     1,
     FONT_CHARSET_ISO8859_16,
     0,
+    0,
     sb_len_first_char,
     sb_get_char_value,
     NULL,
@@ -2168,6 +2182,7 @@ static CHARSETOPS CharsetOps_gb2312_0 = {
     2,
     FONT_CHARSET_GB2312_0,
     0,
+    0,
     gb2312_0_len_first_char,
     gb2312_0_get_char_value,
     NULL,
@@ -2325,6 +2340,7 @@ static CHARSETOPS CharsetOps_gbk = {
     2,
     FONT_CHARSET_GBK,
     0,
+    0,
     gbk_len_first_char,
     gbk_get_char_value,
     NULL,
@@ -2593,6 +2609,7 @@ static CHARSETOPS CharsetOps_gb18030_0 = {
     4,
     FONT_CHARSET_GB18030_0,
     0,
+    0,
     gb18030_0_len_first_char,
     gb18030_0_get_char_value,
     NULL,
@@ -2750,6 +2767,7 @@ static CHARSETOPS CharsetOps_big5 = {
     2,
     FONT_CHARSET_BIG5,
     0,
+    0,
     big5_len_first_char,
     big5_get_char_value,
     NULL,
@@ -2896,6 +2914,7 @@ static CHARSETOPS CharsetOps_ksc5601_0 = {
     2,
     FONT_CHARSET_EUCKR,
     0,
+    0,
     ksc5601_0_len_first_char,
     ksc5601_0_get_char_value,
     NULL,
@@ -3020,6 +3039,7 @@ static CHARSETOPS CharsetOps_jisx0201_0 = {
     1,
     FONT_CHARSET_JISX0201_0,
     0,
+    0,
     jisx0201_0_len_first_char,
     jisx0201_0_get_char_value,
     NULL,
@@ -3163,6 +3183,7 @@ static CHARSETOPS CharsetOps_jisx0208_0 = {
     2,
     FONT_CHARSET_JISX0208_0,
     0,
+    0,
     jisx0208_0_len_first_char,
     jisx0208_0_get_char_value,
     NULL,
@@ -3248,6 +3269,7 @@ static CHARSETOPS CharsetOps_jisx0201_1 = {
     1,
     FONT_CHARSET_JISX0201_1,
     0,
+    0,
     sb_len_first_char,
     sb_get_char_value,
     NULL,
@@ -3419,6 +3441,7 @@ static CHARSETOPS CharsetOps_jisx0208_1 = {
     2,
     FONT_CHARSET_JISX0208_1,
     0,
+    0,
     jisx0208_1_len_first_char,
     jisx0208_1_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/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/menu.c

@@ -2185,7 +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/gui/window.c

@@ -93,9 +93,8 @@ void GUIAPI SetAutoRepeatMessage (HWND hWnd, UINT uMsg,
 {
     MSG msg;
 
-    if (hWnd) {
-        if (!MG_IS_NORMAL_WINDOW(hWnd))
-            return;
+    if (hWnd && !MG_IS_NORMAL_WINDOW(hWnd)) {
+        return;
     }
 
     msg.hwnd = hWnd;
@@ -138,7 +137,7 @@ static void RecalcClientArea (HWND hWnd)
 
             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;
             }
 
@@ -365,11 +364,6 @@ HWND GUIAPI ChildWindowFromPointEx (HWND hParent, POINT pt, UINT uFlags)
     return pRet;
 }
 
-/* NOTE:
- ** this function is CONTROL mouse messages handler,
- ** can automaticly capture mouse depend on HITTEST code.
- */
-
 static PCONTROL __mgs_captured_ctrl = NULL;
 
 void __mg_reset_mainwin_capture_info (PCONTROL ctrl)
@@ -388,6 +382,11 @@ void __mg_reset_mainwin_capture_info (PCONTROL ctrl)
     }
 }
 
+/* NOTE:
+ ** this function is CONTROL mouse messages handler,
+ ** can automaticly capture mouse depend on HITTEST code.
+ */
+
 static LRESULT DefaultDTMouseMsgHandler (PMAINWIN pWin, UINT message,
         WPARAM flags, int x, int y)
 {
@@ -3245,7 +3244,7 @@ int GUIAPI ScrollWindowEx (HWND hWnd, int dx, int dy,
         rcScroll = rcClient;
 
     /*
-     * BUGFIX: if we scrolled all area, the all area must
+     * BUGFIX: if we scrolled all area, the whole area must
      * be set as invalidate (dongjunjie 2010/7/28)
      */
     if ((dx != 0 && abs(dx) >= RECTW(rcScroll)) ||
@@ -3281,7 +3280,6 @@ int GUIAPI ScrollWindowEx (HWND hWnd, int dx, int dy,
     }
 
     SendMessage (HWND_DESKTOP, MSG_SCROLLMAINWIN, (WPARAM)hWnd, (LPARAM)(&swi));
-    UpdateInvalidClient(hWnd, FALSE);
 
     /* show caret */
     if (fCaret) ShowCaretEx (hWnd, FALSE);
@@ -4478,10 +4476,10 @@ HWND GUIAPI CreateMainWindowEx2 (PMAINWINCREATE pCreateInfo, LINT id,
 #endif
 
 #ifdef _MGSCHEMA_COMPOSITING
-    // Close file descriptor to free kernel memory?
-    if (pWin->surf->shared_header) {
-        close (pWin->surf->shared_header->fd);
-        pWin->surf->shared_header->fd = -1;
+    /* Since 5.2.0: keep fd available. */
+    if (0 && pWin->surf->shared_header) {
+        close (pWin->surf->fd);
+        pWin->surf->fd = -1;
     }
 #endif
 
@@ -5587,11 +5585,13 @@ BOOL GUIAPI ValidateRegion (HWND hWnd, const CLIPRGN* pRgn)
 BOOL GUIAPI GetUpdateRect (HWND hWnd, RECT* update_rect)
 {
     PMAINWIN pWin;
+    RECT rcClient;
 
     MG_CHECK_RET (MG_IS_NORMAL_WINDOW(hWnd), FALSE);
     pWin = MG_GET_WINDOW_PTR (hWnd);
 
-    *update_rect = pWin->InvRgn.rgn.rcBound;
+    GetClientRect(hWnd, &rcClient);
+    IntersectRect(update_rect, &pWin->InvRgn.rgn.rcBound, &rcClient);
     return TRUE;
 }
 
@@ -6038,10 +6038,10 @@ HWND GUIAPI CreateWindowEx2 (const char* spClassName,
     }
 
 #ifdef _MGSCHEMA_COMPOSITING
-    // Close file descriptor to free kernel memory?
-    if (dwExStyle & WS_EX_CTRLASMAINWIN && pNewCtrl->surf->shared_header) {
-        close (pNewCtrl->surf->shared_header->fd);
-        pNewCtrl->surf->shared_header->fd = -1;
+    /* Since 5.2.0: keep fd available. */
+    if (0 && dwExStyle & WS_EX_CTRLASMAINWIN && pNewCtrl->surf->shared_header) {
+        close (pNewCtrl->surf->fd);
+        pNewCtrl->surf->fd = -1;
     }
 #endif
 
@@ -6068,6 +6068,28 @@ error:
     return HWND_INVALID;
 }
 
+#ifdef _MGSCHEMA_COMPOSITING
+int GUIAPI GetWindowSharedSurfaceFD (HWND hWnd, size_t *map_size, DWORD *flags)
+{
+    MG_CHECK_RET (MG_IS_NORMAL_WINDOW (hWnd), -1);
+
+    PMAINWIN pWin = (PMAINWIN)hWnd;
+    if (pWin->surf->shared_header) {
+        if (map_size)
+            *map_size = pWin->surf->shared_header->map_size;
+        if (flags) {
+            *flags = MEMDC_FLAG_SWSURFACE;
+            if (pWin->surf->shared_header->byhw)
+                *flags |= MEMDC_FLAG_HWSURFACE;
+        }
+
+        return pWin->surf->fd;
+    }
+
+    return -1;
+}
+#endif /* _MGSCHEMA_COMPOSITING */
+
 BOOL GUIAPI DestroyWindow (HWND hWnd)
 {
     PCONTROL pCtrl;

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/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

@@ -258,7 +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
@@ -911,40 +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;
@@ -958,9 +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