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gdiplus: Reimplement GdipCreateHBITMAPFromBitmap so it can work on locked bitmaps.

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Signed-off-by: Piotr Caban <piotr@codeweavers.com>
Signed-off-by: Vincent Povirk <vincent@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Piotr Caban 2017-02-14 10:24:47 +01:00 committed by Alexandre Julliard
parent 5673d82b8e
commit b58276af4d
1 changed files with 25 additions and 28 deletions
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53
dlls/gdiplus/image.c
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@ -1477,10 +1477,12 @@ GpStatus WINGDIPAPI GdipCreateHBITMAPFromBitmap(GpBitmap* bitmap,
UINT width, height;
BITMAPINFOHEADER bih;
LPBYTE bits;
BitmapData lockeddata;
BOOL unlock;
TRACE("(%p,%p,%x)\n", bitmap, hbmReturn, background);
if (!bitmap || !hbmReturn) return InvalidParameter;
if (!image_lock(&bitmap->image, &unlock)) return ObjectBusy;
GdipGetImageWidth(&bitmap->image, &width);
GdipGetImageHeight(&bitmap->image, &height);
@ -1498,41 +1500,36 @@ GpStatus WINGDIPAPI GdipCreateHBITMAPFromBitmap(GpBitmap* bitmap,
bih.biClrImportant = 0;
result = CreateDIBSection(0, (BITMAPINFO*)&bih, DIB_RGB_COLORS, (void**)&bits, NULL, 0);
if (result)
if (!result)
{
lockeddata.Stride = -width * 4;
lockeddata.Scan0 = bits + (width * 4 * (height - 1));
stat = GdipBitmapLockBits(bitmap, NULL, ImageLockModeRead|ImageLockModeUserInputBuf,
PixelFormat32bppPARGB, &lockeddata);
if (stat == Ok)
stat = GdipBitmapUnlockBits(bitmap, &lockeddata);
if (stat == Ok && (background & 0xffffff))
{
DWORD *ptr;
UINT i;
for (ptr = (DWORD*)bits, i = 0; i < width * height; ptr++, i++)
{
if ((*ptr & 0xff000000) == 0xff000000) continue;
*ptr = blend_argb_no_bkgnd_alpha(*ptr, background);
}
}
image_unlock(&bitmap->image, unlock);
return GenericError;
}
else
stat = GenericError;
if (stat != Ok && result)
stat = convert_pixels(width, height, -width*4,
bits + (width * 4 * (height - 1)), PixelFormat32bppPARGB,
bitmap->stride, bitmap->bits, bitmap->format, bitmap->image.palette);
if (stat != Ok)
{
DeleteObject(result);
result = NULL;
image_unlock(&bitmap->image, unlock);
return stat;
}
if (background & 0xffffff)
{
DWORD *ptr;
UINT i;
for (ptr = (DWORD*)bits, i = 0; i < width * height; ptr++, i++)
{
if ((*ptr & 0xff000000) == 0xff000000) continue;
*ptr = blend_argb_no_bkgnd_alpha(*ptr, background);
}
}
*hbmReturn = result;
return stat;
image_unlock(&bitmap->image, unlock);
return Ok;
}
GpStatus WINGDIPAPI GdipCreateBitmapFromGraphics(INT width, INT height,