Magic-Mirror/gecko-dev
1
0
Fork 0
mirror of https://github.com/mozilla/gecko-dev.git synced 2025-01-24 13:52:37 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Fix for Bug#125898

Browse Source 
Fix for "tearing" of page while scrolling

r=mozilla@switkin.com
This commit is contained in:
arougthopher%lizardland.net 2002-02-20 05:34:02 +00:00
parent 7d0f387877
commit 3c4612992d
1 changed files with 6 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
widget/src/beos/nsWindow.cpp
View File

@ -1540,18 +1540,16 @@ NS_WARNING("nsWindow::SetColorMap - not implemented");
//-------------------------------------------------------------------------
NS_METHOD nsWindow::Scroll(PRInt32 aDx, PRInt32 aDy, nsRect *aClipRect)
{
BRect src;
BRect dest;
if(mView && mView->LockLooper())
{
BRect src;
BRect b = mView->Bounds();
if(aClipRect)
{
src.left = aClipRect->x;
src.top = aClipRect->y;
src.right = aClipRect->XMost();
src.bottom = aClipRect->YMost();
src.right = aClipRect->XMost() - 1;
src.bottom = aClipRect->YMost() - 1;
}
else
src = b;
@ -1563,19 +1561,14 @@ NS_METHOD nsWindow::Scroll(PRInt32 aDx, PRInt32 aDy, nsRect *aClipRect)
// so we don't trigger a BView invalidate
if(src.left + aDx < 0)
src.left = -aDx;
if(src.right + aDy > b.right)
src.right = b.right - aDy;
if(src.right + aDx > b.right)
src.right = b.right - aDx;
if(src.top + aDy < 0)
src.top = -aDy;
if(src.bottom + aDy > b.bottom)
src.bottom = b.bottom - aDy;
dest = src;
dest.left += aDx;
dest.right += aDx;
dest.top += aDy;
dest.bottom += aDy;
BRect dest = src.OffsetByCopy(aDx, aDy);
mView->ConstrainClippingRegion(0);
if(src.IsValid() && dest.IsValid())
mView->CopyBits(src, dest);