Added TFB_DrawCanvas_GetScreenCanvas() and a callback DrawCommand.

git-svn-id: svn://svn.code.sf.net/p/sc2/code/trunk@2837 8092fc87-c524-0410-9efc-e669fe64eaf9

sc2/src/sc2code/libs/graphics/drawcmd.h

@@ -41,6 +41,7 @@ enum
 	TFB_DRAWCOMMANDTYPE_DELETEDATA,
 	TFB_DRAWCOMMANDTYPE_SENDSIGNAL,
 	TFB_DRAWCOMMANDTYPE_REINITVIDEO,
+	TFB_DRAWCOMMANDTYPE_CALLBACK,
 };
 
 typedef struct tfb_dc_line
@@ -135,6 +136,12 @@ typedef struct tfb_dc_reinit_video
 	int driver, flags, width, height;
 } TFB_DrawCommand_ReinitVideo;
 
+typedef struct tfb_dc_callback
+{
+	void (*callback)(void *arg);
+	void *arg;
+} TFB_DrawCommand_Callback;
+
 typedef struct tfb_drawcommand
 {
 	int Type;
@@ -153,6 +160,7 @@ typedef struct tfb_drawcommand
 		TFB_DrawCommand_DeleteData deletedata;
 		TFB_DrawCommand_SendSignal sendsignal;
 		TFB_DrawCommand_ReinitVideo reinitvideo;
+		TFB_DrawCommand_Callback callback;
 	} data;
 } TFB_DrawCommand;
 

sc2/src/sc2code/libs/graphics/sdl/canvas.c

@@ -1541,6 +1541,14 @@ TFB_DrawCanvas_Unlock (TFB_Canvas canvas)
 	SDL_UnlockSurface (surf);
 }
 
+// This function should only be called from the graphics thread,
+// like from a TFB_DrawCommand_Callback command.
+TFB_Canvas
+TFB_DrawCanvas_GetScreenCanvas (SCREEN screen)
+{
+	return (TFB_Canvas) SDL_Screens[screen];
+}
+
 void
 TFB_DrawCanvas_GetScreenFormat (TFB_PixelFormat *fmt)
 {

sc2/src/sc2code/libs/graphics/sdl/sdl_common.c

@@ -607,7 +607,7 @@ TFB_ComputeFPS (void)
 }
 
 void
-TFB_FlushGraphics () // Only call from main thread!!
+TFB_FlushGraphics (void) // Only call from main thread!!
 {
 	int commands_handled;
 	BOOLEAN livelock_deterrence;
@@ -908,6 +908,11 @@ TFB_FlushGraphics () // Only call from main thread!!
 				}
 				break;
 			}
+		case TFB_DRAWCOMMANDTYPE_CALLBACK:
+			{
+				DC.data.callback.callback (DC.data.callback.arg);
+				break;
+			}
 		}
 	}
 	

sc2/src/sc2code/libs/graphics/tfb_draw.c

@@ -228,6 +228,16 @@ TFB_DrawScreen_ReinitVideo (int driver, int flags, int width, int height)
 	TFB_EnqueueDrawCommand (&DrawCommand);
 }
 
+void
+TFB_DrawScreen_Callback (void (*callback) (void *arg), void *arg)
+{
+	TFB_DrawCommand DrawCommand;
+	DrawCommand.Type = TFB_DRAWCOMMANDTYPE_CALLBACK;
+	DrawCommand.data.callback.callback = callback;
+	DrawCommand.data.callback.arg = arg;
+	TFB_EnqueueDrawCommand(&DrawCommand);
+}
+
 void
 TFB_DrawImage_Line (int x1, int y1, int x2, int y2, int r, int g, int b,
 		TFB_Image *dest)
@@ -417,3 +427,4 @@ TFB_DrawImage_FixScaling (TFB_Image *image, int target, int type)
 		image->last_scale = target;
 	}
 }
+

sc2/src/sc2code/libs/graphics/tfb_draw.h

@@ -100,6 +100,7 @@ void TFB_DrawScreen_DeleteData (void *);
 void TFB_DrawScreen_WaitForSignal (void);
 void TFB_DrawScreen_ReinitVideo (int driver, int flags, int width, int height);
 void TFB_DrawScreen_SetPalette (int paletteIndex, int r, int g, int b);
+void TFB_DrawScreen_Callback (void (*callback) (void *arg), void *arg);
 
 TFB_Image *TFB_DrawImage_New (TFB_Canvas canvas);
 TFB_Image *TFB_DrawImage_CreateForScreen (int w, int h, BOOLEAN withalpha);
@@ -152,6 +153,7 @@ void TFB_DrawCanvas_CopyTransparencyInfo (TFB_Canvas src, TFB_Canvas dst);
 void TFB_DrawCanvas_Initialize (void);
 void TFB_DrawCanvas_Lock (TFB_Canvas canvas);
 void TFB_DrawCanvas_Unlock (TFB_Canvas canvas);
+TFB_Canvas TFB_DrawCanvas_GetScreenCanvas (SCREEN screen);
 void TFB_DrawCanvas_GetScreenFormat (TFB_PixelFormat *fmt);
 int TFB_DrawCanvas_GetStride (TFB_Canvas canvas);
 void *TFB_DrawCanvas_GetLine (TFB_Canvas canvas, int line);