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Fix a regression caused by an earlier patch for CreateDIBitmap.

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Michael Kaufmann 2004-09-20 21:45:00 +00:00 committed by Alexandre Julliard
parent 37dcaf6be6
commit 970b2218d6
2 changed files with 89 additions and 17 deletions
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21
dlls/gdi/dib.c
View file

@ -104,8 +104,8 @@ int DIB_BitmapInfoSize( const BITMAPINFO * info, WORD coloruse )
* Return 1 for INFOHEADER, 0 for COREHEADER,
* 4 for V4HEADER, 5 for V5HEADER, -1 for error.
*/
static int DIB_GetBitmapInfo( const BITMAPINFOHEADER *header, DWORD *width,
int *height, WORD *bpp, WORD *compr )
static int DIB_GetBitmapInfo( const BITMAPINFOHEADER *header, LONG *width,
LONG *height, WORD *bpp, DWORD *compr )
{
if (header->biSize == sizeof(BITMAPINFOHEADER))
{
@ -782,15 +782,26 @@ HBITMAP WINAPI CreateDIBitmap( HDC hdc, const BITMAPINFOHEADER *header,
UINT coloruse )
{
HBITMAP handle;
DWORD width;
int height;
LONG width;
LONG height;
WORD bpp;
WORD compr;
DWORD compr;
DC *dc;
if (DIB_GetBitmapInfo( header, &width, &height, &bpp, &compr ) == -1) return 0;
if (width < 0)
{
TRACE("Bitmap has a negative width\n");
return 0;
}
/* Top-down DIBs have a negative height */
if (height < 0) height = -height;
TRACE("hdc=%p, header=%p, init=%lu, bits=%p, data=%p, coloruse=%u (bitmap: width=%ld, height=%ld, bpp=%u, compr=%lu)\n",
hdc, header, init, bits, data, coloruse, width, height, bpp, compr);
if (hdc == NULL)
handle = CreateBitmap( width, height, 1, 1, NULL );
else

85
windows/cursoricon.c
View file

@ -273,6 +273,54 @@ static BOOL is_dib_monochrome( const BITMAPINFO* info )
}
}
/***********************************************************************
* DIB_GetBitmapInfo
*
* Get the info from a bitmap header.
* Return 1 for INFOHEADER, 0 for COREHEADER,
* 4 for V4HEADER, 5 for V5HEADER, -1 for error.
*/
static int DIB_GetBitmapInfo( const BITMAPINFOHEADER *header, LONG *width,
LONG *height, WORD *bpp, DWORD *compr )
{
if (header->biSize == sizeof(BITMAPINFOHEADER))
{
*width = header->biWidth;
*height = header->biHeight;
*bpp = header->biBitCount;
*compr = header->biCompression;
return 1;
}
if (header->biSize == sizeof(BITMAPCOREHEADER))
{
BITMAPCOREHEADER *core = (BITMAPCOREHEADER *)header;
*width = core->bcWidth;
*height = core->bcHeight;
*bpp = core->bcBitCount;
*compr = 0;
return 0;
}
if (header->biSize == sizeof(BITMAPV4HEADER))
{
BITMAPV4HEADER *v4hdr = (BITMAPV4HEADER *)header;
*width = v4hdr->bV4Width;
*height = v4hdr->bV4Height;
*bpp = v4hdr->bV4BitCount;
*compr = v4hdr->bV4V4Compression;
return 4;
}
if (header->biSize == sizeof(BITMAPV5HEADER))
{
BITMAPV5HEADER *v5hdr = (BITMAPV5HEADER *)header;
*width = v5hdr->bV5Width;
*height = v5hdr->bV5Height;
*bpp = v5hdr->bV5BitCount;
*compr = v5hdr->bV5Compression;
return 5;
}
ERR("(%ld): unknown/wrong size for header\n", header->biSize );
return -1;
}
/**********************************************************************
* CURSORICON_FindSharedIcon
@ -659,7 +707,7 @@ static HICON CURSORICON_CreateFromResource( HMODULE16 hModule, HGLOBAL16 hObj, L
return 0;
}
if (!screen_dc) screen_dc = CreateDCA( "DISPLAY", NULL, NULL, NULL );
if (!screen_dc) screen_dc = CreateDCW( DISPLAYW, NULL, NULL, NULL );
if (screen_dc)
{
BITMAPINFO* pInfo;
@ -2059,7 +2107,7 @@ static HBITMAP BITMAP_Load( HINSTANCE instance, LPCWSTR name, UINT loadflags )
memcpy(fix_info, info, size);
pix = *((LPBYTE)info + size);
DIB_FixColorsToLoadflags(fix_info, loadflags, pix);
if (!screen_dc) screen_dc = CreateDCA( "DISPLAY", NULL, NULL, NULL );
if (!screen_dc) screen_dc = CreateDCW( DISPLAYW, NULL, NULL, NULL );
if (screen_dc)
{
@ -2075,18 +2123,31 @@ static HBITMAP BITMAP_Load( HINSTANCE instance, LPCWSTR name, UINT loadflags )
else {
/* If it's possible, create a monochrome bitmap */
LONG height = fix_info->bmiHeader.biHeight;
if (height < 0) height = -height;
LONG width;
LONG height;
WORD bpp;
DWORD compr;
if (is_dib_monochrome(fix_info))
hbitmap = CreateBitmap(fix_info->bmiHeader.biWidth, height, 1, 1, NULL);
else
hbitmap = CreateBitmap(fix_info->bmiHeader.biWidth, height,
GetDeviceCaps(screen_dc, PLANES),
GetDeviceCaps(screen_dc, BITSPIXEL), NULL);
if (DIB_GetBitmapInfo( &fix_info->bmiHeader, &width, &height, &bpp, &compr ) != -1)
{
if (width < 0)
TRACE("Bitmap has a negative width\n");
else
{
/* Top-down DIBs have a negative height */
if (height < 0) height = -height;
SetDIBits(screen_dc, hbitmap, 0, height, bits, info, DIB_RGB_COLORS);
}
TRACE("width=%ld, height=%ld, bpp=%u, compr=%lu\n", width, height, bpp, compr);
if (is_dib_monochrome(fix_info))
hbitmap = CreateBitmap(width, height, 1, 1, NULL);
else
hbitmap = CreateCompatibleBitmap(screen_dc, width, height);
SetDIBits(screen_dc, hbitmap, 0, height, bits, info, DIB_RGB_COLORS);
}
}
}
}
GlobalUnlock(hFix);