From 421ffea9c5b22c12d7280bd032f9fe56d14419f4 Mon Sep 17 00:00:00 2001
From: Vincent Wei <vincent@minigui.org>
Date: Sun, 16 Jun 2019 17:35:15 +0800
Subject: [PATCH] tune

---
 src/ial/ial.c    |  4 ++--
 src/ial/random.c | 62 +++++++++++++++++++++++++++++++++++++-----------
 2 files changed, 50 insertions(+), 16 deletions(-)

diff --git a/src/ial/ial.c b/src/ial/ial.c
index 51666dae..13e2c62d 100644
--- a/src/ial/ial.c
+++ b/src/ial/ial.c
@@ -282,13 +282,13 @@ int mg_InitIAL (void)
     //strcpy (__mg_cur_input->mdev, mdev);
 
     if (!IAL_InitInput (__mg_cur_input, mdev, mtype)) {
-        _ERR_PRINTF ("IAL: Init IAL engine failure.\n");
+        _ERR_PRINTF ("IAL: Failed to initialize the IAL engine: %s.\n", __mg_cur_input->id);
         return ERR_INPUT_ENGINE;
     }
 
     _DBG_PRINTF ("IAL: Use %s engine.\n", __mg_cur_input->id);
-
     IAL_SetMouseRange (0, 0, WIDTHOFPHYGC - 1, HEIGHTOFPHYGC - 1);
+
     return 0;
 }
 
diff --git a/src/ial/random.c b/src/ial/random.c
index b3097e01..fe8ab6db 100644
--- a/src/ial/random.c
+++ b/src/ial/random.c
@@ -1,40 +1,74 @@
 /*
- *   This file is part of MiniGUI, a mature cross-platform windowing 
+ *   This file is part of MiniGUI, a mature cross-platform windowing
  *   and Graphics User Interface (GUI) support system for embedded systems
  *   and smart IoT devices.
- * 
- *   Copyright (C) 2002~2018, Beijing FMSoft Technologies Co., Ltd.
+ *
+ *   Copyright (C) 2002~2019, Beijing FMSoft Technologies Co., Ltd.
  *   Copyright (C) 1998~2002, WEI Yongming
- * 
+ *
  *   This program is free software: you can redistribute it and/or modify
  *   it under the terms of the GNU General Public License as published by
  *   the Free Software Foundation, either version 3 of the License, or
  *   (at your option) any later version.
- * 
+ *
  *   This program is distributed in the hope that it will be useful,
  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  *   GNU General Public License for more details.
- * 
+ *
  *   You should have received a copy of the GNU General Public License
  *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
- * 
+ *
  *   Or,
- * 
+ *
  *   As this program is a library, any link to this program must follow
  *   GNU General Public License version 3 (GPLv3). If you cannot accept
  *   GPLv3, you need to be licensed from FMSoft.
- * 
+ *
  *   If you have got a commercial license of this program, please use it
  *   under the terms and conditions of the commercial license.
- * 
+ *
  *   For more information about the commercial license, please refer to
  *   <http://www.minigui.com/en/about/licensing-policy/>.
  */
 /*
-** random.c: A random IAL Engine
-** 
-** Created by Wei Yongming, 2005/06/08
+** random.c: the random IAL Engine.
+**
+** Created by WEI Yongming, 2005/06/08
+**
+** Enhanced by WEI Yongming to support extra input events in June, 2019.
+**
+** The MiniGUI runtime configuration key `random.logfile` specifies
+** the log file which will store the input events generated by this engine.
+** If MiniGUI failed to open the log file, the log feature will be disabled.
+**
+** The MiniGUI runtime configuration key `random.eventtypes` specifies
+** the input event types which will be generated by this IAL engine,
+** in the following pattern:
+**
+**  <event-type>[-<event-type>]*
+**
+** The <event-type> can be one of the following values:
+**
+**  - mouse: mouse.
+**  - keyboard: keyboard.
+**  - joystick: joystick buttons.
+**  - button: buttons other than joystick.
+**  - single_touch: touch pen or single touch panel.
+**  - multi_touch: multiple touch panel.
+**  - gesture: gesture.
+**  - tablet_tool: tablet tool.
+**  - tablet_pad: tablet pad.
+**  - switch: switch.
+**
+** The MiniGUI ETC key `random.maxkeycode` specify the maximal key code
+** which can be generated by the engine.
+**
+** For invalid `random.eventtyps` and `random.maxkeycord key value,
+** use `mouse` and `NR_KEYS` respectively.
+**
+** This engine maintains a state machine for input events, and
+** generates a reasonable event sequence for each event type.
 */
 
 #include <stdio.h>
@@ -120,7 +154,7 @@ static int event_generator (void)
     int event_type;
     int retvalue;
     static int last_down_key;
-    
+
     while (1) {
 
         retvalue = 0;