Date: Mon, 17 Nov 2003 21:59:24 -0800

From: Pete Shinners
Subject: [SDL] directfb cursor patch

here is a quick and dirty patch that allows directfb to change the
visibility of the cursor. this display backend still has no way to change
the actual cursor shape, but being able to set the cursor visibility is a
simple change that should offer some benefits.

the code was largely based on the cursor code for other sdl backends. and
this documentation.
http://directfb.org/documentation/DirectFB_Reference/IDirectFBDisplayLayer_SetCursorOpacity.html

--HG--
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%40768

src/video/directfb/SDL_DirectFB_video.c

@@ -52,6 +52,11 @@ static char rcsid =
 #include "SDL_DirectFB_events.h"
 #include "SDL_DirectFB_yuv.h"
 
+/* The implementation dependent data for the window manager cursor */
+struct WMcursor {
+	int unused;
+};
+
 
 /* Initialization/Query functions */
 static int DirectFB_VideoInit(_THIS, SDL_PixelFormat *vformat);
@@ -73,6 +78,7 @@ static int DirectFB_HWAccelBlit(SDL_Surface *src, SDL_Rect *srcrect,
 static int DirectFB_SetHWColorKey(_THIS, SDL_Surface *surface, Uint32 key);
 static int DirectFB_SetHWAlpha(_THIS, SDL_Surface *surface, Uint8 alpha);
 static int DirectFB_FlipHWSurface(_THIS, SDL_Surface *surface);
+static int DirectFB_ShowWMCursor(_THIS, WMcursor *cursor);
 
 /* Various screen update functions available */
 static void DirectFB_DirectUpdate(_THIS, int numrects, SDL_Rect *rects);
@@ -139,6 +145,7 @@ static SDL_VideoDevice *DirectFB_CreateDevice(int devindex)
   device->UnlockHWSurface = DirectFB_UnlockHWSurface;
   device->FlipHWSurface = DirectFB_FlipHWSurface;
   device->FreeHWSurface = DirectFB_FreeHWSurface;
+  device->ShowWMCursor = DirectFB_ShowWMCursor;
   device->SetCaption = NULL;
   device->SetIcon = NULL;
   device->IconifyWindow = NULL;
@@ -1143,6 +1150,21 @@ void DirectFB_VideoQuit(_THIS)
   HIDDEN->initialized = 0;
 }
 
+
+int DirectFB_ShowWMCursor(_THIS, WMcursor *cursor)
+{
+  /* We can only hide or show the default cursor */
+  if ( cursor == NULL )
+    {
+      SetCursorOpacity(HIDDEN->layer, 0);
+    }
+    else
+    {
+      SetCursorOpacity(HIDDEN->layer, 256);
+    }
+  return 1;
+}
+
 void DirectFB_FinalQuit(void) 
 {
 }