Working double buffering

client/src/gui/gui.c

@@ -63,8 +63,39 @@ void guiModesShow(void) {
 
 
 void guiRun(void) {
+	char         text[256] = { 0 };
+	GrMouseEvent event;
+
+#define APPEND (&text[strlen(text)])
+
 	while (_guiRunning) {
+		GrMouseGetEvent(GR_M_EVENT, &event);
+		if (event.flags != 0) {
+			strcpy(text, "Events:  ");
+			if(event.flags & GR_M_MOTION)      strcpy( APPEND,"[moved] ");
+			if(event.flags & GR_M_LEFT_DOWN)   strcpy( APPEND,"[left down] ");
+			if(event.flags & GR_M_MIDDLE_DOWN) strcpy( APPEND,"[middle down] ");
+			if(event.flags & GR_M_RIGHT_DOWN)  strcpy( APPEND,"[right down] ");
+			if(event.flags & GR_M_P4_DOWN)     strcpy( APPEND,"[p4 down] ");
+			if(event.flags & GR_M_P5_DOWN)     strcpy( APPEND,"[p5 down] ");
+			if(event.flags & GR_M_LEFT_UP)     strcpy( APPEND,"[left up] ");
+			if(event.flags & GR_M_MIDDLE_UP)   strcpy( APPEND,"[middle up] ");
+			if(event.flags & GR_M_RIGHT_UP)    strcpy( APPEND,"[right up] ");
+			if(event.flags & GR_M_P4_UP)       strcpy( APPEND,"[p4 up] ");
+			if(event.flags & GR_M_P5_UP)       strcpy( APPEND,"[p5 up] ");
+			if(event.flags & GR_M_KEYPRESS)    sprintf(APPEND,"[key (0x%03x)] ",event.key);
+			sprintf(APPEND,"at X=%d, Y=%d, ",event.x,event.y);
+			sprintf(APPEND,
+				"buttons=%c%c%c, ",
+				(event.buttons & GR_M_LEFT)   ? 'L' : 'l',
+				(event.buttons & GR_M_MIDDLE) ? 'M' : 'm',
+				(event.buttons & GR_M_RIGHT)  ? 'R' : 'r'
+			);
+			sprintf(APPEND,"deltaT=%ld (ms)",event.dtime);
+			strcpy (APPEND,"                         ");
+		}
 		wmPaint();
+		GrTextXY(0, 0, text, GUI_WHITE, GUI_BLACK);
 		if (GrKeyRead() == GrKey_Escape) guiStop();
 	}
 }
@@ -78,14 +109,17 @@ void guiRegister(WidgetRegisterT widgetRegister) {
 
 
 void guiShutdown(void) {
-	wmShutdown();
-
 	while (hmlen(_widgetCatalog) > 0) {
 		if (_widgetCatalog[0].value->unregister) _widgetCatalog[0].value->unregister(NULL);
 		hmdel(_widgetCatalog, _widgetCatalog[0].key);
 	}
 	hmfree(_widgetCatalog);
 
+	wmShutdown();
+
+	GrMouseEraseCursor();
+	GrMouseUnInit();
+
 	DEL(__guiBaseColors);
 
 	GrSetMode(GR_default_text);
@@ -96,10 +130,15 @@ void guiStartup(int16_t width, int16_t height, int16_t depth) {
 	if (!GrSetMode(GR_width_height_bpp_graphics, width, height, depth)) {
 		//***TODO*** Die
 	}
-
 	GrSetRGBcolorMode();
 	__guiBaseColors = GrAllocEgaColors();
 
+	GrMouseInit();
+	GrMouseEventEnable(1, 1);
+	GrMouseSetColors(GUI_WHITE, GUI_BLACK);
+	GrMouseSetCursorMode(GR_M_CUR_NORMAL);
+	GrMouseDisplayCursor();
+
 	wmStartup();
 
 	guiRegister(windowRegister);

client/src/gui/wmwindow.c

@@ -4,7 +4,9 @@
 
 uint8_t  __MAGIC_WINDOW = 0;
 
-static WindowT      **_windowList = NULL;
+static WindowT      **_windowList   = NULL;
+static GrContext     *_backBuffer   = NULL;
+static GrContext     *_screenBuffer = NULL;
 static GrTextOption   _textOption;
 
 
@@ -237,14 +239,18 @@ void wmPaint(void) {
 	WidgetT  *widget;
 
 	// Paint desktop.
-	GrClearScreen(GUI_CYAN);
+	GrSetContext(_backBuffer);
+	GrClearContext(GUI_CYAN);
 
 	// Paint all windows.
 	for (i=0; i<arrlen(_windowList); i++) {
-		GrSetContext(GrScreenContext());
+		GrSetContext(_backBuffer);
 		widget = (WidgetT *)_windowList[i];
 		widget->reg->paint(widget);
 	}
+
+	// Copy to screen.
+	GrBitBltNC(_screenBuffer, 0, 0, _backBuffer, 0, 0, GrMaxX(), GrMaxY(), GrWRITE);
 }
 
 
@@ -253,9 +259,12 @@ void wmShutdown(void) {
 		windowDestroy((WidgetT *)_windowList[0]);
 	}
 	arrfree(_windowList);
+
+	GrDestroyContext(_backBuffer);
 }
 
 
 void wmStartup(void) {
-
+	_screenBuffer = GrScreenContext();
+	_backBuffer   = GrCreateContext(GrScreenX(), GrScreenY(), NULL, NULL);
 }

client/src/main.c

@@ -3,13 +3,19 @@
 
 
 int main(int argc, char *argv[]) {
+	char     title[256];
+	uint16_t i;
 
 	(void)argc;
 	(void)argv;
 
 	guiStartup(800, 600, 24);
 
-	windowCreate(50, 50, 300, 200, "Testing", WIN_CLOSE | WIN_MAXIMIZE | WIN_MINIMIZE | WIN_RESIZE);
+	for (i=1; i<4; i++) {
+		sprintf(title, "Testing %d", i);
+		windowCreate(i * 50, i * 50, 300, 200, title, WIN_CLOSE | WIN_MAXIMIZE | WIN_MINIMIZE | WIN_RESIZE);
+	}
+
 	guiRun();
 
 	guiShutdown();