# HG changeset patch
# User Sam Lantinga <slouken@libsdl.org>
# Date 1073231836 0
# Node ID d9e79e31a7b7935e4e6410e665a92b6b4b3f8843
# Parent  ed57c876700d78a9524ba887aa7cefc7b349b842
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

diff -r ed57c876700d -r d9e79e31a7b7 src/video/directfb/SDL_DirectFB_video.c
--- a/src/video/directfb/SDL_DirectFB_video.c	Sun Jan 04 15:48:44 2004 +0000
+++ b/src/video/directfb/SDL_DirectFB_video.c	Sun Jan 04 15:57:16 2004 +0000
@@ -52,6 +52,11 @@
 #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_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 @@
   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 @@
   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) 
 {
 }