libui: add API for setting a background color for uiArea. (TODO: do for GTK)

make window background black.

src/libui_sdl/libui/ui.h

@@ -334,6 +334,7 @@ _UI_EXTERN void uiAreaScrollTo(uiArea *a, double x, double y, double width, doub
 // TODO release capture?
 _UI_EXTERN void uiAreaBeginUserWindowMove(uiArea *a);
 _UI_EXTERN void uiAreaBeginUserWindowResize(uiArea *a, uiWindowResizeEdge edge);
+_UI_EXTERN void uiAreaSetBackgroundColor(uiArea *a, int r, int g, int b);
 _UI_EXTERN uiArea *uiNewArea(uiAreaHandler *ah);
 _UI_EXTERN uiArea *uiNewScrollingArea(uiAreaHandler *ah, int width, int height);
 

src/libui_sdl/libui/windows/area.cpp

@@ -167,6 +167,15 @@ void uiAreaBeginUserWindowResize(uiArea *a, uiWindowResizeEdge edge)
 		wParam, 0);
 }
 
+
+void uiAreaSetBackgroundColor(uiArea *a, int r, int g, int b)
+{
+    a->bgR = r;
+    a->bgG = g;
+    a->bgB = b;
+}
+
+
 uiArea *uiNewArea(uiAreaHandler *ah)
 {
 	uiArea *a;
@@ -184,6 +193,8 @@ uiArea *uiNewArea(uiAreaHandler *ah)
 		hInstance, a,
 		FALSE);
 
+    uiAreaSetBackgroundColor(a, -1, -1, -1);
+
 	return a;
 }
 
@@ -206,6 +217,8 @@ uiArea *uiNewScrollingArea(uiAreaHandler *ah, int width, int height)
 		hInstance, a,
 		FALSE);
 
+    uiAreaSetBackgroundColor(a, -1, -1, -1);
+
 	// set initial scrolling parameters
 	areaUpdateScroll(a);
 

src/libui_sdl/libui/windows/area.hpp

@@ -24,6 +24,8 @@ struct uiArea {
 	BOOL inside;
 	BOOL tracking;
 
+	int bgR, bgG, bgB;
+
 	ID2D1HwndRenderTarget *rt;
 };
 

src/libui_sdl/libui/windows/areadraw.cpp

@@ -40,14 +40,24 @@ static HRESULT doPaint(uiArea *a, ID2D1RenderTarget *rt, RECT *clip)
 
 	// TODO only clear the clip area
 	// TODO clear with actual background brush
-	bgcolorref = GetSysColor(COLOR_BTNFACE);
-	bgcolor.r = ((float) GetRValue(bgcolorref)) / 255.0;
-	// due to utter apathy on Microsoft's part, GetGValue() does not work with MSVC's Run-Time Error Checks
-	// it has not worked since 2008 and they have *never* fixed it
-	// TODO now that -RTCc has just been deprecated entirely, should we switch back?
-	bgcolor.g = ((float) ((BYTE) ((bgcolorref & 0xFF00) >> 8))) / 255.0;
-	bgcolor.b = ((float) GetBValue(bgcolorref)) / 255.0;
-	bgcolor.a = 1.0;
+	if (a->bgR != -1)
+    {
+        bgcolor.r = ((float) a->bgR) / 255.0;
+        bgcolor.g = ((float) a->bgG) / 255.0;
+        bgcolor.b = ((float) a->bgB) / 255.0;
+        bgcolor.a = 1.0;
+    }
+    else
+    {
+        bgcolorref = GetSysColor(COLOR_BTNFACE);
+        bgcolor.r = ((float) GetRValue(bgcolorref)) / 255.0;
+        // due to utter apathy on Microsoft's part, GetGValue() does not work with MSVC's Run-Time Error Checks
+        // it has not worked since 2008 and they have *never* fixed it
+        // TODO now that -RTCc has just been deprecated entirely, should we switch back?
+        bgcolor.g = ((float) ((BYTE) ((bgcolorref & 0xFF00) >> 8))) / 255.0;
+        bgcolor.b = ((float) GetBValue(bgcolorref)) / 255.0;
+        bgcolor.a = 1.0;
+    }
 	rt->Clear(&bgcolor);
 
 	(*(ah->Draw))(ah, a, &dp);

src/libui_sdl/main.cpp

@@ -313,13 +313,6 @@ void OnAreaDraw(uiAreaHandler* handler, uiArea* area, uiAreaDrawParams* params)
     uiDrawBitmapDraw(params->Context, ScreenBitmap, &top, &TopScreenRect);
     uiDrawRestore(params->Context);
 
-    /*uiDrawMatrix blirg;
-    uiDrawMatrixSetIdentity(&blirg);
-    uiDrawMatrixTranslate(&blirg, -BottomScreenRect.X, -BottomScreenRect.Y);
-    uiDrawMatrixRotate(&blirg, 0, 0, -M_PI/2.0f);//3.14);
-    uiDrawMatrixTranslate(&blirg, BottomScreenRect.X, BottomScreenRect.Y+BottomScreenRect.Height);
-    //uiDrawMatrixScale(&blirg, 128, 192, 2, 2);
-    uiDrawTransform(params->Context, &blirg);*/
     uiDrawSave(params->Context);
     uiDrawTransform(params->Context, &BottomScreenTrans);
     uiDrawBitmapDraw(params->Context, ScreenBitmap, &bot, &BottomScreenRect);
@@ -422,6 +415,9 @@ int OnAreaKeyEvent(uiAreaHandler* handler, uiArea* area, uiAreaKeyEvent* evt)
         for (int i = 0; i < 12; i++)
             if (evt->Scancode == Config::KeyMapping[i])
                 KeyInputMask &= ~(1<<i);
+
+        //if (evt->Scancode == 0x58) // F12
+        //    NDS::debug(0);
     }
 
     return 1;
@@ -1081,6 +1077,7 @@ int main(int argc, char** argv)
     MainDrawArea = uiNewArea(&areahandler);
     uiWindowSetChild(MainWindow, uiControl(MainDrawArea));
     uiControlSetMinSize(uiControl(MainDrawArea), 256, 384);
+    uiAreaSetBackgroundColor(MainDrawArea, 0, 0, 0); // TODO: make configurable?
 
     EmuRunning = 2;
     RunningSomething = false;