[Qemu-devel] [PATCH v3] ui/sdl: Load optional QEMU icon

[Stefan Weil <weil@mail.berlios.de>]

Load an optional QEMU icon file. If there is no icon file named
qemu.bmp in QEMU's default search path, QEMU will run with
the usual system default icon.

A matching icon file  will be loaded and used by X Windows managers
or MS Windows while a QEMU instance is running.

SDL requires icon files in 32x32x4 bmp format.

v2:
The first version of this patch also included qemu-icon.bmp
and rules to handle this file. That part will now be published
in a separate patch as soon as the QEMU community has chosen
a common QEMU icon. The SDL code here is useful to try
different icons.

v3:
White pixels are now used for transparency.
This needs a 16 colour bmp file.

Cc: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Stefan Weil <weil@mail.berlios.de>
---
 ui/sdl.c |   13 +++++++++++++
 1 files changed, 13 insertions(+), 0 deletions(-)

diff --git a/ui/sdl.c b/ui/sdl.c
index 47ac49c..f5dbc93 100644
--- a/ui/sdl.c
+++ b/ui/sdl.c
@@ -816,6 +816,7 @@ void sdl_display_init(DisplayState *ds, int full_screen, int no_frame)
     uint8_t data = 0;
     DisplayAllocator *da;
     const SDL_VideoInfo *vi;
+    char *filename;
 
 #if defined(__APPLE__)
     /* always use generic keymaps */
@@ -848,6 +849,18 @@ void sdl_display_init(DisplayState *ds, int full_screen, int no_frame)
     vi = SDL_GetVideoInfo();
     host_format = *(vi->vfmt);
 
+    /* Load a 32x32x4 image. White pixels are transparent. */
+    filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, "qemu-icon.bmp");
+    if (filename) {
+        SDL_Surface *image = SDL_LoadBMP(filename);
+        if (image) {
+            uint32_t colorkey = SDL_MapRGB(image->format, 255, 255, 255);
+            SDL_SetColorKey(image, SDL_SRCCOLORKEY, colorkey);
+            SDL_WM_SetIcon(image, NULL);
+        }
+        qemu_free(filename);
+    }
+
     dcl = qemu_mallocz(sizeof(DisplayChangeListener));
     dcl->dpy_update = sdl_update;
     dcl->dpy_resize = sdl_resize;
-- 
1.7.2.3