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optimized SetClipRectInPixels for the 'kReplace' case.

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This commit is contained in:
pierre%netscape.com 1999-04-27 05:33:16 +00:00
parent 950ba5b0b5
commit 8563904a23
1 changed files with 44 additions and 30 deletions
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74
gfx/src/mac/nsRenderingContextMac.cpp
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@ -119,7 +119,8 @@ void GraphicState::Init(GrafPtr aPort)
// init from grafPort (usually an offscreen port)
RgnHandle rgn = ::NewRgn();
::RectRgn(rgn, &aPort->portRect);
if (rgn)
::RectRgn(rgn, &aPort->portRect);
mMainRegion = rgn;
mClipRegion = DuplicateRgn(rgn);
@ -545,8 +546,8 @@ NS_IMETHODIMP nsRenderingContextMac :: CopyOffScreenBits(nsDrawingSurface aSrcSu
::SetRect(&macSrcRect,
x,
y,
dstRect.width,
dstRect.height);
x + dstRect.width,
y + dstRect.height);
::SetRect(&macDstRect,
dstRect.x,
@ -726,36 +727,46 @@ NS_IMETHODIMP nsRenderingContextMac :: SetClipRectInPixels(const nsRect& aRect,
Rect macRect;
::SetRect(&macRect, aRect.x, aRect.y, aRect.x + aRect.width, aRect.y + aRect.height);
RgnHandle rectRgn = ::NewRgn();
::RectRgn(rectRgn, &macRect);
RgnHandle clipRgn = mGS->mClipRegion;
if (clipRgn == nsnull)
clipRgn = ::NewRgn();
switch (aCombine)
if (!clipRgn)
{
case nsClipCombine_kIntersect:
::SectRgn(clipRgn, rectRgn, clipRgn);
break;
case nsClipCombine_kUnion:
::UnionRgn(clipRgn, rectRgn, clipRgn);
break;
case nsClipCombine_kSubtract:
::DiffRgn(clipRgn, rectRgn, clipRgn);
break;
case nsClipCombine_kReplace:
::CopyRgn(rectRgn, clipRgn);
break;
clipRgn = ::NewRgn();
if (!clipRgn) return NS_ERROR_OUT_OF_MEMORY;
}
::DisposeRgn(rectRgn);
StartDraw();
::SetClip(clipRgn);
EndDraw();
if (aCombine == nsClipCombine_kReplace)
{
StartDraw();
::RectRgn(clipRgn, &macRect);
::SetClip(clipRgn);
EndDraw();
}
else
{
RgnHandle rectRgn = ::NewRgn();
if (!rectRgn) return NS_ERROR_OUT_OF_MEMORY;
::RectRgn(rectRgn, &macRect);
switch (aCombine)
{
case nsClipCombine_kIntersect:
::SectRgn(clipRgn, rectRgn, clipRgn);
break;
case nsClipCombine_kUnion:
::UnionRgn(clipRgn, rectRgn, clipRgn);
break;
case nsClipCombine_kSubtract:
::DiffRgn(clipRgn, rectRgn, clipRgn);
break;
}
::DisposeRgn(rectRgn);
StartDraw();
::SetClip(clipRgn);
EndDraw();
}
mGS->mClipRegion = clipRgn;
aClipEmpty = ::EmptyRgn(clipRgn);
@ -803,8 +814,11 @@ NS_IMETHODIMP nsRenderingContextMac :: SetClipRegion(const nsIRegion& aRegion, n
aRegion.GetNativeRegion(regionH);
RgnHandle clipRgn = mGS->mClipRegion;
if (clipRgn == nsnull)
if (!clipRgn)
{
clipRgn = ::NewRgn();
if (!clipRgn) return NS_ERROR_OUT_OF_MEMORY;
}
switch (aCombine)
{