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Fixed alpha blend support in DrawIconEx

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svn path=/trunk/; revision=25200
This commit is contained in:
Magnus Olsen
2006-12-21 19:43:13 +00:00
parent b818e776ee
commit 757b471441
1 changed files with 21 additions and 2 deletions
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reactos/subsystems/win32/win32k/ntuser/cursoricon.c
+21 -2
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@@ -1371,6 +1371,7 @@ UserDrawIconEx(
HBITMAP hbmOff = 0;
HDC hdcMem = 0;
HGDIOBJ hOldMem;
BOOL bAlpha = FALSE;
hbmMask = pIcon->IconInfo.hbmMask;
hbmColor = pIcon->IconInfo.hbmColor;
@@ -1399,6 +1400,11 @@ UserDrawIconEx(
IconSize.cy = bmpMask.bmHeight / 2;
}
if (bmpColor.bmPlanes == 32)
{
bAlpha = TRUE;
}
if(!diFlags)
diFlags = DI_NORMAL;
@@ -1506,8 +1512,21 @@ UserDrawIconEx(
if(DoFlickerFree)
{
NtGdiBitBlt(hDc, xLeft, yTop, cxWidth,
cyHeight, hdcOff, 0, 0, SRCCOPY, 0, 0);
if (bAlpha)
{
BLENDFUNCTION BlendFunc;
BlendFunc.BlendOp = AC_SRC_OVER; /* right ? */
BlendFunc.BlendFlags = 0;
BlendFunc.SourceConstantAlpha = 255;
BlendFunc.AlphaFormat = AC_SRC_ALPHA;
NtGdiAlphaBlend(hDc, xLeft, yTop, cxWidth, cyHeight,
hdcOff, 0, 0, 0, 0, BlendFunc);
}
else
{
NtGdiBitBlt(hDc, xLeft, yTop, cxWidth,
cyHeight, hdcOff, 0, 0, SRCCOPY, 0, 0);
}
}
NtGdiSetTextColor(hdcOff, oldFg);