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Bug 430748: In print-selection, crop out selection regions that are before the top of the first page. (e.g. initial whitespace) r+sr=roc a=beltzner

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dholbert@cs.stanford.edu 2008-04-29 11:16:49 -07:00
parent 5e281b7d91
commit c3164c68e9
1 changed files with 21 additions and 0 deletions
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21
layout/printing/nsPrintEngine.cpp
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@ -2201,6 +2201,27 @@ nsPrintEngine::DoPrint(nsPrintObject * aPO)
{
startRect.y -= totalMargin.top;
endRect.y -= totalMargin.top;
// Clip out selection regions above the top of the first page
if (startRect.y < 0) {
// Reduce height to be the height of the positive-territory
// region of original rect
startRect.height = PR_MAX(0, startRect.YMost());
startRect.y = 0;
}
if (endRect.y < 0) {
// Reduce height to be the height of the positive-territory
// region of original rect
endRect.height = PR_MAX(0, endRect.YMost());
endRect.y = 0;
}
NS_ASSERTION(endRect.y >= startRect.y,
"Selection end point should be after start point");
NS_ASSERTION(startRect.height >= 0,
"rect should have non-negative height.");
NS_ASSERTION(endRect.height >= 0,
"rect should have non-negative height.");
nscoord selectionHgt = endRect.y + endRect.height - startRect.y;
// XXX This is temporary fix for printing more than one page of a selection
pageSequence->SetSelectionHeight(startRect.y * aPO->mZoomRatio,