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do not use RWOps in WIN_SetWindowIcon

This commit is contained in:
pionere 2022-01-09 15:08:21 +01:00 committed by Ryan C. Gordon
parent 739f350f45
commit 942b01a54c
2 changed files with 22 additions and 21 deletions
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1
include/SDL_assert.h
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@ -76,6 +76,7 @@ assert can have unique static variables associated with it.
#endif
#define SDL_FILE __FILE__
#define SDL_LINE __LINE__
#define SDL_STATIC_ASSERT(COND,MSG) typedef char static_assertion_##MSG[(COND)?1:-1];
/*
sizeof (x) makes the compiler still parse the expression even without

42
src/video/windows/SDL_windowswindow.c
View File

@ -442,39 +442,40 @@ WIN_SetWindowIcon(_THIS, SDL_Window * window, SDL_Surface * icon)
HWND hwnd = ((SDL_WindowData *) window->driverdata)->hwnd;
HICON hicon = NULL;
BYTE *icon_bmp;
int icon_len, mask_len, y;
SDL_RWops *dst;
int icon_len, mask_len, row_len, y;
BITMAPINFOHEADER *bmi;
Uint8 *dst;
SDL_bool isstack;
/* Create temporary buffer for ICONIMAGE structure */
SDL_STATIC_ASSERT(sizeof(BITMAPINFOHEADER) == 40, WIN_SetWindowIcon_uses_BITMAPINFOHEADER_to_prepare_an_ICONIMAGE);
mask_len = (icon->h * (icon->w + 7)/8);
icon_len = 40 + icon->h * icon->w * sizeof(Uint32) + mask_len;
icon_len = sizeof(BITMAPINFOHEADER) + icon->h * icon->w * sizeof(Uint32) + mask_len;
icon_bmp = SDL_small_alloc(BYTE, icon_len, &isstack);
dst = SDL_RWFromMem(icon_bmp, icon_len);
if (!dst) {
SDL_small_free(icon_bmp, isstack);
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 * sizeof(Uint32));
SDL_WriteLE32(dst, 0);
SDL_WriteLE32(dst, 0);
SDL_WriteLE32(dst, 0);
SDL_WriteLE32(dst, 0);
bmi = (BITMAPINFOHEADER *)icon_bmp;
bmi->biSize = SDL_SwapLE32(sizeof(BITMAPINFOHEADER));
bmi->biWidth = SDL_SwapLE32(icon->w);
bmi->biHeight = SDL_SwapLE32(icon->h * 2);
bmi->biPlanes = SDL_SwapLE16(1);
bmi->biBitCount = SDL_SwapLE16(32);
bmi->biCompression = SDL_SwapLE32(BI_RGB);
bmi->biSizeImage = SDL_SwapLE32(icon->h * icon->w * sizeof(Uint32));
bmi->biXPelsPerMeter = SDL_SwapLE32(0);
bmi->biYPelsPerMeter = SDL_SwapLE32(0);
bmi->biClrUsed = SDL_SwapLE32(0);
bmi->biClrImportant = SDL_SwapLE32(0);
/* Write the pixels upside down into the bitmap buffer */
SDL_assert(icon->format->format == SDL_PIXELFORMAT_ARGB8888);
dst = &icon_bmp[sizeof(BITMAPINFOHEADER)];
row_len = icon->w * sizeof(Uint32);
y = icon->h;
while (y--) {
Uint8 *src = (Uint8 *) icon->pixels + y * icon->pitch;
SDL_RWwrite(dst, src, icon->w * sizeof(Uint32), 1);
SDL_memcpy(dst, src, row_len);
dst += row_len;
}
/* Write the mask */
@ -482,7 +483,6 @@ WIN_SetWindowIcon(_THIS, SDL_Window * window, SDL_Surface * icon)
hicon = CreateIconFromResource(icon_bmp, icon_len, TRUE, 0x00030000);
SDL_RWclose(dst);
SDL_small_free(icon_bmp, isstack);
/* Set the icon for the window */