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gdiplus: Use GdipCloneBitmapArea to get bitmap areas for texture brushes.

This commit is contained in:
Vincent Povirk 2010-02-11 16:30:56 -06:00 committed by Alexandre Julliard
parent e933da4fdb
commit 53e326a77c
1 changed files with 35 additions and 105 deletions
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140
dlls/gdiplus/brush.c
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@ -784,18 +784,15 @@ GpStatus WINGDIPAPI GdipCreateTextureIA(GpImage *image,
GDIPCONST GpImageAttributes *imageattr, REAL x, REAL y, REAL width,
REAL height, GpTexture **texture)
{
HDC hdc;
HBITMAP hbm, old = NULL;
BITMAPINFO *pbmi;
BITMAPINFOHEADER *bmih;
INT n_x, n_y, n_width, n_height, abs_height, stride, image_stride, i, bytespp;
BOOL bm_is_selected;
BYTE *dibits, *buff, *textbits;
HBITMAP hbm;
GpStatus status;
GpImage *new_image=NULL;
TRACE("(%p, %p, %.2f, %.2f, %.2f, %.2f, %p)\n", image, imageattr, x, y, width, height,
texture);
*texture = NULL;
if(!image || !texture || x < 0.0 || y < 0.0 || width < 0.0 || height < 0.0)
return InvalidParameter;
@ -804,121 +801,54 @@ GpStatus WINGDIPAPI GdipCreateTextureIA(GpImage *image,
return NotImplemented;
}
n_x = roundr(x);
n_y = roundr(y);
n_width = roundr(width);
n_height = roundr(height);
status = GdipCloneBitmapArea(x, y, width, height, PixelFormatDontCare, (GpBitmap*)image, (GpBitmap**)&new_image);
if (status != Ok)
return status;
if(n_x + n_width > ((GpBitmap*)image)->width ||
n_y + n_height > ((GpBitmap*)image)->height)
return InvalidParameter;
hbm = ((GpBitmap*)image)->hbitmap;
if(!hbm) return GenericError;
hdc = ((GpBitmap*)image)->hdc;
bm_is_selected = (hdc != 0);
pbmi = GdipAlloc(sizeof(BITMAPINFOHEADER) + 256 * sizeof(RGBQUAD));
if (!pbmi)
return OutOfMemory;
pbmi->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
pbmi->bmiHeader.biBitCount = 0;
if(!bm_is_selected){
hdc = CreateCompatibleDC(0);
old = SelectObject(hdc, hbm);
hbm = ((GpBitmap*)new_image)->hbitmap;
if(!hbm)
{
status = GenericError;
goto exit;
}
/* fill out bmi */
GetDIBits(hdc, hbm, 0, 0, NULL, pbmi, DIB_RGB_COLORS);
bytespp = pbmi->bmiHeader.biBitCount / 8;
abs_height = abs(pbmi->bmiHeader.biHeight);
if(n_x > pbmi->bmiHeader.biWidth || n_x + n_width > pbmi->bmiHeader.biWidth ||
n_y > abs_height || n_y + n_height > abs_height){
GdipFree(pbmi);
return InvalidParameter;
}
dibits = GdipAlloc(pbmi->bmiHeader.biSizeImage);
if(dibits) /* this is not a good place to error out */
GetDIBits(hdc, hbm, 0, abs_height, dibits, pbmi, DIB_RGB_COLORS);
if(!bm_is_selected){
SelectObject(hdc, old);
DeleteDC(hdc);
}
if(!dibits){
GdipFree(pbmi);
return OutOfMemory;
}
image_stride = (pbmi->bmiHeader.biWidth * bytespp + 3) & ~3;
stride = (n_width * bytespp + 3) & ~3;
buff = GdipAlloc(sizeof(BITMAPINFOHEADER) + stride * n_height);
if(!buff){
GdipFree(pbmi);
GdipFree(dibits);
return OutOfMemory;
}
bmih = (BITMAPINFOHEADER*)buff;
textbits = (BYTE*) (bmih + 1);
bmih->biSize = sizeof(BITMAPINFOHEADER);
bmih->biWidth = n_width;
bmih->biHeight = n_height;
bmih->biCompression = BI_RGB;
bmih->biSizeImage = stride * n_height;
bmih->biBitCount = pbmi->bmiHeader.biBitCount;
bmih->biClrUsed = 0;
bmih->biPlanes = 1;
/* image is flipped */
if(pbmi->bmiHeader.biHeight > 0){
dibits += image_stride * (pbmi->bmiHeader.biHeight - 1);
image_stride *= -1;
textbits += stride * (n_height - 1);
stride *= -1;
}
GdipFree(pbmi);
for(i = 0; i < n_height; i++)
memcpy(&textbits[i * stride],
&dibits[n_x * bytespp + (n_y + i) * image_stride],
abs(stride));
*texture = GdipAlloc(sizeof(GpTexture));
if (!*texture){
GdipFree(dibits);
GdipFree(buff);
return OutOfMemory;
status = OutOfMemory;
goto exit;
}
if((status = GdipCreateMatrix(&(*texture)->transform)) != Ok){
GdipFree(*texture);
GdipFree(dibits);
GdipFree(buff);
return status;
goto exit;
}
(*texture)->brush.lb.lbStyle = BS_DIBPATTERNPT;
(*texture)->brush.lb.lbColor = DIB_RGB_COLORS;
(*texture)->brush.lb.lbHatch = (ULONG_PTR)buff;
(*texture)->brush.lb.lbStyle = BS_PATTERN;
(*texture)->brush.lb.lbColor = 0;
(*texture)->brush.lb.lbHatch = (ULONG_PTR)hbm;
(*texture)->brush.gdibrush = CreateBrushIndirect(&(*texture)->brush.lb);
(*texture)->brush.bt = BrushTypeTextureFill;
(*texture)->wrap = imageattr->wrap;
GdipFree(dibits);
GdipFree(buff);
exit:
GdipDisposeImage(new_image);
TRACE("<-- %p\n", *texture);
if (status == Ok)
{
TRACE("<-- %p\n", *texture);
}
else
{
if (*texture)
{
GdipDeleteMatrix((*texture)->transform);
GdipFree(*texture);
*texture = NULL;
}
TRACE("<-- error %u\n", status);
}
return Ok;
return status;
}
/******************************************************************************