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Added support for translucent icons on Windows

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--HG--
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%403432
This commit is contained in:
Sam Lantinga 2009-01-03 01:01:53 +00:00
parent 1ba6e5602c
commit 8e66442a4f
3 changed files with 61 additions and 0 deletions
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1
src/video/win32/SDL_win32video.c
View file

@ -146,6 +146,7 @@ WIN_CreateDevice(int devindex)
device->CreateWindow = WIN_CreateWindow;
device->CreateWindowFrom = WIN_CreateWindowFrom;
device->SetWindowTitle = WIN_SetWindowTitle;
device->SetWindowIcon = WIN_SetWindowIcon;
device->SetWindowPosition = WIN_SetWindowPosition;
device->SetWindowSize = WIN_SetWindowSize;
device->ShowWindow = WIN_ShowWindow;

59
src/video/win32/SDL_win32window.c
View file

@ -30,6 +30,7 @@
#include "SDL_config.h"
#include "../SDL_sysvideo.h"
#include "../SDL_pixels_c.h"
#include "../../events/SDL_keyboard_c.h"
#include "SDL_win32video.h"
@ -311,6 +312,64 @@ WIN_SetWindowTitle(_THIS, SDL_Window * window)
}
}
void
WIN_SetWindowIcon(_THIS, SDL_Window * window, SDL_Surface * icon)
{
HWND hwnd = ((SDL_WindowData *) window->driverdata)->hwnd;
HICON hicon = NULL;
if(icon) {
BYTE *icon_bmp;
int icon_len;
SDL_RWops *dst;
SDL_PixelFormat format;
SDL_Surface *surface;
/* Create temporary bitmap buffer */
icon_len = 40 + icon->h * icon->w * 4;
icon_bmp = SDL_stack_alloc(BYTE, icon_len);
dst = SDL_RWFromMem(icon_bmp, icon_len);
if (!dst) {
SDL_stack_free(icon_bmp);
return;
}
/* Write the BITMAPINFO header */
SDL_WriteLE32(dst, 40);
SDL_WriteLE32(dst, icon->w);
SDL_WriteLE32(dst, icon->h*2);
SDL_WriteLE16(dst, 1);
SDL_WriteLE16(dst, 32);
SDL_WriteLE32(dst, BI_RGB);
SDL_WriteLE32(dst, icon->h * icon->w * 4);
SDL_WriteLE32(dst, 0);
SDL_WriteLE32(dst, 0);
SDL_WriteLE32(dst, 0);
SDL_WriteLE32(dst, 0);
/* Convert the icon to a 32-bit surface with alpha channel */
SDL_InitFormat(&format, 32,
0x00FF0000, 0x0000FF00, 0x000000FF, 0xFF000000);
surface = SDL_ConvertSurface(icon, &format, 0);
if (surface) {
/* Write the pixels upside down into the bitmap buffer */
int y = surface->h;
while (y--) {
Uint8 *src = (Uint8 *)surface->pixels + y * surface->pitch;
SDL_RWwrite(dst, src, surface->pitch, 1);
}
SDL_FreeSurface(surface);
hicon = CreateIconFromResource(icon_bmp, icon_len, TRUE, 0x00030000);
}
SDL_RWclose(dst);
SDL_stack_free(icon_bmp);
}
/* Set the icon */
SendMessage(hwnd, WM_SETICON, ICON_SMALL, (LPARAM)hicon);
}
void
WIN_SetWindowPosition(_THIS, SDL_Window * window)
{

1
src/video/win32/SDL_win32window.h
View file

@ -38,6 +38,7 @@ typedef struct
extern int WIN_CreateWindow(_THIS, SDL_Window * window);
extern int WIN_CreateWindowFrom(_THIS, SDL_Window * window, const void *data);
extern void WIN_SetWindowTitle(_THIS, SDL_Window * window);
extern void WIN_SetWindowIcon(_THIS, SDL_Window * window, SDL_Surface * icon);
extern void WIN_SetWindowPosition(_THIS, SDL_Window * window);
extern void WIN_SetWindowSize(_THIS, SDL_Window * window);
extern void WIN_ShowWindow(_THIS, SDL_Window * window);