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uxtheme: Speed up UXTHEME_SizedBlt in the ST_TILE by building an appropriately-sized memory bitmap out of the tile instead of iterating with UXTHEME_Blt() directly.

This commit is contained in:
Alex Villacís Lasso 2008-04-21 09:55:12 -05:00 committed by Alexandre Julliard
parent 2e798b52ef
commit 1706d0d63e
1 changed files with 56 additions and 16 deletions
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72
dlls/uxtheme/draw.c
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@ -340,27 +340,67 @@ static inline BOOL UXTHEME_SizedBlt (HDC hdcDst, int nXOriginDst, int nYOriginDs
{
if (sizingtype == ST_TILE)
{
int yOfs = nYOriginDst;
int yRemaining = nHeightDst;
while (yRemaining > 0)
HDC hdcTemp;
BOOL result = FALSE;
/* Create a DC with a bitmap consisting of a tiling of the source
bitmap, with standard GDI functions. This is faster than an
iteration with UXTHEME_Blt(). */
hdcTemp = CreateCompatibleDC(hdcSrc);
if (hdcTemp != 0)
{
int bltHeight = min (yRemaining, nHeightSrc);
int xOfs = nXOriginDst;
int xRemaining = nWidthDst;
HBITMAP bitmapTemp;
HBITMAP bitmapOrig;
int nWidthTemp, nHeightTemp;
int xOfs, xRemaining;
int yOfs, yRemaining;
int growSize;
/* Calculate temp dimensions of integer multiples of source dimensions */
nWidthTemp = ((nWidthDst + nWidthSrc - 1) / nWidthSrc) * nWidthSrc;
nHeightTemp = ((nHeightDst + nHeightSrc - 1) / nHeightSrc) * nHeightSrc;
bitmapTemp = CreateCompatibleBitmap(hdcSrc, nWidthTemp, nHeightTemp);
bitmapOrig = SelectObject(hdcTemp, bitmapTemp);
/* Initial copy of bitmap */
BitBlt(hdcTemp, 0, 0, nWidthSrc, nHeightSrc, hdcSrc, nXOriginSrc, nYOriginSrc, SRCCOPY);
/* Extend bitmap in the X direction. Growth of width is exponential */
xOfs = nWidthSrc;
xRemaining = nWidthTemp - nWidthSrc;
growSize = nWidthSrc;
while (xRemaining > 0)
{
int bltWidth = min (xRemaining, nWidthSrc);
if (!UXTHEME_Blt (hdcDst, xOfs, yOfs, bltWidth, bltHeight,
hdcSrc, nXOriginSrc, nYOriginSrc,
transparent, transcolor))
return FALSE;
xOfs += nWidthSrc;
xRemaining -= nWidthSrc;
growSize = min(growSize, xRemaining);
BitBlt(hdcTemp, xOfs, 0, growSize, nHeightSrc, hdcTemp, 0, 0, SRCCOPY);
xOfs += growSize;
xRemaining -= growSize;
growSize *= 2;
}
yOfs += nHeightSrc;
yRemaining -= nHeightSrc;
/* Extend bitmap in the Y direction. Growth of height is exponential */
yOfs = nHeightSrc;
yRemaining = nHeightTemp - nHeightSrc;
growSize = nHeightSrc;
while (yRemaining > 0)
{
growSize = min(growSize, yRemaining);
BitBlt(hdcTemp, 0, yOfs, nWidthTemp, growSize, hdcTemp, 0, 0, SRCCOPY);
yOfs += growSize;
yRemaining -= growSize;
growSize *= 2;
}
/* Use temporary hdc for source */
result = UXTHEME_Blt (hdcDst, nXOriginDst, nYOriginDst, nWidthDst, nHeightDst,
hdcTemp, 0, 0,
transparent, transcolor);
SelectObject(hdcTemp, bitmapOrig);
DeleteObject(bitmapTemp);
}
return TRUE;
DeleteDC(hdcTemp);
return result;
}
else
{