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Bug 902762 pt 5 - Handle vertical textruns when painting text in nsTextFrame. r=smontagu

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This commit is contained in:
Jonathan Kew 2014-10-01 20:25:49 +01:00
parent 66014a92ef
commit 4e2adf654b
1 changed files with 35 additions and 13 deletions
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48
layout/generic/nsTextFrame.cpp
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@ -5551,16 +5551,18 @@ nsTextFrame::PaintTextWithSelectionColors(gfxContext* aCtx,
return false;
}
const gfxFloat startXOffset = aTextBaselinePt.x - aFramePt.x;
gfxFloat xOffset, hyphenWidth;
bool vertical = mTextRun->IsVertical();
const gfxFloat startIOffset = vertical ?
aTextBaselinePt.y - aFramePt.y : aTextBaselinePt.x - aFramePt.x;
gfxFloat iOffset, hyphenWidth;
uint32_t offset, length; // in transformed string
SelectionType type;
TextRangeStyle rangeStyle;
// Draw background colors
if (anyBackgrounds) {
SelectionIterator iterator(prevailingSelections, aContentOffset, aContentLength,
aProvider, mTextRun, startXOffset);
while (iterator.GetNextSegment(&xOffset, &offset, &length, &hyphenWidth,
aProvider, mTextRun, startIOffset);
while (iterator.GetNextSegment(&iOffset, &offset, &length, &hyphenWidth,
&type, &rangeStyle)) {
nscolor foreground, background;
GetSelectionTextColors(type, aTextPaintStyle, rangeStyle,
@ -5569,11 +5571,18 @@ nsTextFrame::PaintTextWithSelectionColors(gfxContext* aCtx,
gfxFloat advance = hyphenWidth +
mTextRun->GetAdvanceWidth(offset, length, &aProvider);
if (NS_GET_A(background) > 0) {
gfxFloat x = xOffset - (mTextRun->IsRightToLeft() ? advance : 0);
gfxRect bgRect;
gfxFloat offs = iOffset - (mTextRun->IsRightToLeft() ? advance : 0);
if (vertical) {
bgRect = gfxRect(aFramePt.x, aFramePt.y + offs,
GetSize().width, advance);
} else {
bgRect = gfxRect(aFramePt.x + offs, aFramePt.y,
advance, GetSize().height);
}
PaintSelectionBackground(aCtx, aTextPaintStyle.PresContext(),
background, aDirtyRect,
gfxRect(aFramePt.x + x, aFramePt.y, advance,
GetSize().height), aCallbacks);
bgRect, aCallbacks);
}
iterator.UpdateWithAdvance(advance);
}
@ -5584,13 +5593,15 @@ nsTextFrame::PaintTextWithSelectionColors(gfxContext* aCtx,
nsRect dirtyRect(aDirtyRect.x, aDirtyRect.y,
aDirtyRect.width, aDirtyRect.height);
SelectionIterator iterator(prevailingSelections, aContentOffset, aContentLength,
aProvider, mTextRun, startXOffset);
while (iterator.GetNextSegment(&xOffset, &offset, &length, &hyphenWidth,
aProvider, mTextRun, startIOffset);
while (iterator.GetNextSegment(&iOffset, &offset, &length, &hyphenWidth,
&type, &rangeStyle)) {
nscolor foreground, background;
GetSelectionTextColors(type, aTextPaintStyle, rangeStyle,
&foreground, &background);
gfxPoint textBaselinePt(aFramePt.x + xOffset, aTextBaselinePt.y);
gfxPoint textBaselinePt = vertical ?
gfxPoint(aTextBaselinePt.x, aFramePt.y + iOffset) :
gfxPoint(aFramePt.x + iOffset, aTextBaselinePt.y);
// Determine what shadow, if any, to draw - either from textStyle
// or from the ::-moz-selection pseudo-class if specified there
@ -5611,7 +5622,7 @@ nsTextFrame::PaintTextWithSelectionColors(gfxContext* aCtx,
shadow->ShadowAt(i - 1), &aProvider,
dirtyRect, aFramePt, textBaselinePt, aCtx,
foreground, aClipEdges,
xOffset - (mTextRun->IsRightToLeft() ?
iOffset - (mTextRun->IsRightToLeft() ?
shadowMetrics.mBoundingBox.width : 0),
shadowMetrics.mBoundingBox);
}
@ -5945,10 +5956,17 @@ nsTextFrame::PaintText(nsRenderingContext* aRenderingContext, nsPoint aPt,
gfxContext* ctx = aRenderingContext->ThebesContext();
const bool rtl = mTextRun->IsRightToLeft();
const bool vertical = mTextRun->IsVertical();
const nscoord frameWidth = GetSize().width;
gfxPoint framePt(aPt.x, aPt.y);
gfxPoint textBaselinePt(rtl ? gfxFloat(aPt.x + frameWidth) : framePt.x,
gfxPoint textBaselinePt;
if (vertical) {
textBaselinePt = gfxPoint(aPt.x + mAscent,
rtl ? gfxFloat(aPt.y + GetSize().height) : aPt.y);
} else {
textBaselinePt = gfxPoint(rtl ? gfxFloat(aPt.x + frameWidth) : framePt.x,
nsLayoutUtils::GetSnappedBaselineY(this, ctx, aPt.y, mAscent));
}
uint32_t startOffset = provider.GetStart().GetSkippedOffset();
uint32_t maxLength = ComputeTransformedLength(provider);
nscoord snappedLeftEdge, snappedRightEdge;
@ -5956,7 +5974,11 @@ nsTextFrame::PaintText(nsRenderingContext* aRenderingContext, nsPoint aPt,
&startOffset, &maxLength, &snappedLeftEdge, &snappedRightEdge)) {
return;
}
textBaselinePt.x += rtl ? -snappedRightEdge : snappedLeftEdge;
if (vertical) {
textBaselinePt.y += rtl ? -snappedRightEdge : snappedLeftEdge;
} else {
textBaselinePt.x += rtl ? -snappedRightEdge : snappedLeftEdge;
}
nsCharClipDisplayItem::ClipEdges clipEdges(aItem, snappedLeftEdge,
snappedRightEdge);
nsTextPaintStyle textPaintStyle(this);