/* virtual */ LogicalSize nsFieldSetFrame::ComputeSize(nsRenderingContext *aRenderingContext, WritingMode aWM, const LogicalSize& aCBSize, nscoord aAvailableISize, const LogicalSize& aMargin, const LogicalSize& aBorder, const LogicalSize& aPadding, ComputeSizeFlags aFlags) { LogicalSize result = nsContainerFrame::ComputeSize(aRenderingContext, aWM, aCBSize, aAvailableISize, aMargin, aBorder, aPadding, aFlags); // XXX The code below doesn't make sense if the caller's writing mode // is orthogonal to this frame's. Not sure yet what should happen then; // for now, just bail out. if (aWM.IsVertical() != GetWritingMode().IsVertical()) { return result; } // Fieldsets never shrink below their min width. // If we're a container for font size inflation, then shrink // wrapping inside of us should not apply font size inflation. AutoMaybeDisableFontInflation an(this); nscoord minISize = GetMinISize(aRenderingContext); if (minISize > result.ISize(aWM)) { result.ISize(aWM) = minISize; } return result; }
LogicalSize nsMeterFrame::ComputeAutoSize(nsRenderingContext *aRenderingContext, WritingMode aWM, const LogicalSize& aCBSize, nscoord aAvailableISize, const LogicalSize& aMargin, const LogicalSize& aBorder, const LogicalSize& aPadding, bool aShrinkWrap) { nsRefPtr<nsFontMetrics> fontMet; NS_ENSURE_SUCCESS(nsLayoutUtils::GetFontMetricsForFrame(this, getter_AddRefs(fontMet)), LogicalSize(aWM)); const WritingMode wm = GetWritingMode(); LogicalSize autoSize(wm); autoSize.BSize(wm) = autoSize.ISize(wm) = fontMet->Font().size; // 1em if (ResolvedOrientationIsVertical() == wm.IsVertical()) { autoSize.ISize(wm) *= 5; // 5em } else { autoSize.BSize(wm) *= 5; // 5em } return autoSize.ConvertTo(aWM, wm); }
void nsMeterFrame::ReflowBarFrame(nsIFrame* aBarFrame, nsPresContext* aPresContext, const nsHTMLReflowState& aReflowState, nsReflowStatus& aStatus) { bool vertical = ResolvedOrientationIsVertical(); WritingMode wm = aBarFrame->GetWritingMode(); LogicalSize availSize = aReflowState.ComputedSize(wm); availSize.BSize(wm) = NS_UNCONSTRAINEDSIZE; nsHTMLReflowState reflowState(aPresContext, aReflowState, aBarFrame, availSize); nscoord size = vertical ? aReflowState.ComputedHeight() : aReflowState.ComputedWidth(); nscoord xoffset = aReflowState.ComputedPhysicalBorderPadding().left; nscoord yoffset = aReflowState.ComputedPhysicalBorderPadding().top; // NOTE: Introduce a new function getPosition in the content part ? HTMLMeterElement* meterElement = static_cast<HTMLMeterElement*>(mContent); double max = meterElement->Max(); double min = meterElement->Min(); double value = meterElement->Value(); double position = max - min; position = position != 0 ? (value - min) / position : 1; size = NSToCoordRound(size * position); if (!vertical && (wm.IsVertical() ? wm.IsVerticalRL() : !wm.IsBidiLTR())) { xoffset += aReflowState.ComputedWidth() - size; } // The bar position is *always* constrained. if (vertical) { // We want the bar to begin at the bottom. yoffset += aReflowState.ComputedHeight() - size; size -= reflowState.ComputedPhysicalMargin().TopBottom() + reflowState.ComputedPhysicalBorderPadding().TopBottom(); size = std::max(size, 0); reflowState.SetComputedHeight(size); } else { size -= reflowState.ComputedPhysicalMargin().LeftRight() + reflowState.ComputedPhysicalBorderPadding().LeftRight(); size = std::max(size, 0); reflowState.SetComputedWidth(size); } xoffset += reflowState.ComputedPhysicalMargin().left; yoffset += reflowState.ComputedPhysicalMargin().top; nsHTMLReflowMetrics barDesiredSize(reflowState); ReflowChild(aBarFrame, aPresContext, barDesiredSize, reflowState, xoffset, yoffset, 0, aStatus); FinishReflowChild(aBarFrame, aPresContext, barDesiredSize, &reflowState, xoffset, yoffset, 0); }
bool nsNativeTheme::IsFrameRTL(nsIFrame* aFrame) { if (!aFrame) { return false; } WritingMode wm = aFrame->GetWritingMode(); return !(wm.IsVertical() ? wm.IsVerticalLR() : wm.IsBidiLTR()); }
explicit GetWritingModeName(const WritingMode& aWritingMode) { if (!aWritingMode.IsVertical()) { Assign("Horizontal"); return; } if (aWritingMode.IsVerticalLR()) { Assign("Vertical (LTR)"); return; } Assign("Vertical (RTL)"); }
nscoord nsSubDocumentFrame::GetIntrinsicBSize() { // <frame> processing does not use this routine, only <iframe> NS_ASSERTION(IsInline(), "Shouldn't have been called"); if (mContent->IsXULElement()) { return 0; } NS_ASSERTION(ObtainIntrinsicSizeFrame() == nullptr, "Intrinsic bsize should come from the embedded document."); // Use size of 300px x 150px, for compatibility with IE, and per CSS2.1 draft. WritingMode wm = GetWritingMode(); return nsPresContext::CSSPixelsToAppUnits(wm.IsVertical() ? 300 : 150); }
nscoord nsSubDocumentFrame::GetIntrinsicISize() { if (!IsInline()) { return 0; // HTML <frame> has no useful intrinsic isize } if (mContent->IsXULElement()) { return 0; // XUL <iframe> and <browser> have no useful intrinsic isize } NS_ASSERTION(ObtainIntrinsicSizeFrame() == nullptr, "Intrinsic isize should come from the embedded document."); // We must be an HTML <iframe>. Default to size of 300px x 150px, for IE // compat (and per CSS2.1 draft). WritingMode wm = GetWritingMode(); return nsPresContext::CSSPixelsToAppUnits(wm.IsVertical() ? 150 : 300); }
/* returns a Direction struct containing the horizontal and vertical direction */ nsResizerFrame::Direction nsResizerFrame::GetDirection() { static const nsIContent::AttrValuesArray strings[] = { &nsGkAtoms::topleft, &nsGkAtoms::top, &nsGkAtoms::topright, &nsGkAtoms::left, &nsGkAtoms::right, &nsGkAtoms::bottomleft, &nsGkAtoms::bottom, &nsGkAtoms::bottomright, &nsGkAtoms::bottomstart, &nsGkAtoms::bottomend, nullptr }; static const Direction directions[] = { {-1, -1}, {0, -1}, {1, -1}, {-1, 0}, {1, 0}, {-1, 1}, {0, 1}, {1, 1}, {-1, 1}, {1, 1} }; if (!GetContent()) { return directions[0]; // default: topleft } int32_t index = GetContent()->FindAttrValueIn(kNameSpaceID_None, nsGkAtoms::dir, strings, eCaseMatters); if (index < 0) { return directions[0]; // default: topleft } if (index >= 8) { // Directions 8 and higher are RTL-aware directions and should reverse the // horizontal component if RTL. WritingMode wm = GetWritingMode(); if (!(wm.IsVertical() ? wm.IsVerticalLR() : wm.IsBidiLTR())) { Direction direction = directions[index]; direction.mHorizontal *= -1; return direction; } } return directions[index]; }
void nsSimplePageSequenceFrame::SetDesiredSize(ReflowOutput& aDesiredSize, const ReflowInput& aReflowInput, nscoord aWidth, nscoord aHeight) { // Aim to fill the whole size of the document, not only so we // can act as a background in print preview but also handle overflow // in child page frames correctly. // Use availableISize so we don't cause a needless horizontal scrollbar. WritingMode wm = aReflowInput.GetWritingMode(); nscoord scaledWidth = aWidth * PresContext()->GetPrintPreviewScale(); nscoord scaledHeight = aHeight * PresContext()->GetPrintPreviewScale(); nscoord scaledISize = (wm.IsVertical() ? scaledHeight : scaledWidth); nscoord scaledBSize = (wm.IsVertical() ? scaledWidth : scaledHeight); aDesiredSize.ISize(wm) = std::max(scaledISize, aReflowInput.AvailableISize()); aDesiredSize.BSize(wm) = std::max(scaledBSize, aReflowInput.ComputedBSize()); }
/* virtual */ nscoord nsSVGOuterSVGFrame::GetPrefISize(nsRenderingContext *aRenderingContext) { nscoord result; DISPLAY_PREF_WIDTH(this, result); SVGSVGElement *svg = static_cast<SVGSVGElement*>(mContent); WritingMode wm = GetWritingMode(); const nsSVGLength2& isize = wm.IsVertical() ? svg->mLengthAttributes[SVGSVGElement::ATTR_HEIGHT] : svg->mLengthAttributes[SVGSVGElement::ATTR_WIDTH]; if (isize.IsPercentage()) { // It looks like our containing block's isize may depend on our isize. In // that case our behavior is undefined according to CSS 2.1 section 10.3.2. // As a last resort, we'll fall back to returning zero. result = nscoord(0); // Returning zero may be unhelpful, however, as it leads to unexpected // disappearance of %-sized SVGs in orthogonal contexts, where our // containing block wants to shrink-wrap. So let's look for an ancestor // with non-zero size in this dimension, and use that as a (somewhat // arbitrary) result instead. nsIFrame *parent = GetParent(); while (parent) { nscoord parentISize = parent->GetLogicalSize(wm).ISize(wm); if (parentISize > 0 && parentISize != NS_UNCONSTRAINEDSIZE) { result = parentISize; break; } parent = parent->GetParent(); } } else { result = nsPresContext::CSSPixelsToAppUnits(isize.GetAnimValue(svg)); if (result < 0) { result = nscoord(0); } } return result; }
nscoord nsSubDocumentFrame::GetIntrinsicISize() { if (!IsInline()) { return 0; // HTML <frame> has no useful intrinsic isize } if (mContent->IsXULElement()) { return 0; // XUL <iframe> and <browser> have no useful intrinsic isize } NS_ASSERTION(ObtainIntrinsicSizeFrame() == nullptr, "Intrinsic isize should come from the embedded document."); // We must be an HTML <iframe>. Default to size of 300px x 150px, for IE // compat (and per CSS2.1 draft). // This depends on the applied styles, which the comments in nsLeafFrame.h // say it should not, but we know it cannot change during the lifetime of // the frame because changing writing-mode leads to frame reconstruction. WritingMode wm = GetWritingMode(); return nsPresContext::CSSPixelsToAppUnits(wm.IsVertical() ? 150 : 300); }
LogicalSize nsTextControlFrame::ComputeAutoSize(nsRenderingContext *aRenderingContext, WritingMode aWM, const LogicalSize& aCBSize, nscoord aAvailableISize, const LogicalSize& aMargin, const LogicalSize& aBorder, const LogicalSize& aPadding, bool aShrinkWrap) { float inflation = nsLayoutUtils::FontSizeInflationFor(this); LogicalSize autoSize(aWM); nsresult rv = CalcIntrinsicSize(aRenderingContext, aWM, autoSize, inflation); if (NS_FAILED(rv)) { // What now? autoSize.SizeTo(aWM, 0, 0); } #ifdef DEBUG // Note: Ancestor ComputeAutoSize only computes a width if we're auto-width else { const nsStyleCoord& inlineStyleCoord = aWM.IsVertical() ? StylePosition()->mHeight : StylePosition()->mWidth; if (inlineStyleCoord.GetUnit() == eStyleUnit_Auto) { LogicalSize ancestorAutoSize = nsContainerFrame::ComputeAutoSize(aRenderingContext, aWM, aCBSize, aAvailableISize, aMargin, aBorder, aPadding, aShrinkWrap); // Disabled when there's inflation; see comment in GetPrefSize. MOZ_ASSERT(inflation != 1.0f || ancestorAutoSize.ISize(aWM) == autoSize.ISize(aWM), "Incorrect size computed by ComputeAutoSize?"); } } #endif return autoSize; }
LogicalSize nsProgressFrame::ComputeAutoSize(nsRenderingContext *aRenderingContext, WritingMode aWM, const LogicalSize& aCBSize, nscoord aAvailableISize, const LogicalSize& aMargin, const LogicalSize& aBorder, const LogicalSize& aPadding, bool aShrinkWrap) { const WritingMode wm = GetWritingMode(); LogicalSize autoSize(wm); autoSize.BSize(wm) = autoSize.ISize(wm) = NSToCoordRound(StyleFont()->mFont.size * nsLayoutUtils::FontSizeInflationFor(this)); // 1em if (ResolvedOrientationIsVertical() == wm.IsVertical()) { autoSize.ISize(wm) *= 10; // 10em } else { autoSize.BSize(wm) *= 10; // 10em } return autoSize.ConvertTo(aWM, wm); }
void nsProgressFrame::ReflowBarFrame(nsIFrame* aBarFrame, nsPresContext* aPresContext, const nsHTMLReflowState& aReflowState, nsReflowStatus& aStatus) { bool vertical = ResolvedOrientationIsVertical(); WritingMode wm = aBarFrame->GetWritingMode(); LogicalSize availSize = aReflowState.ComputedSize(wm); availSize.BSize(wm) = NS_UNCONSTRAINEDSIZE; nsHTMLReflowState reflowState(aPresContext, aReflowState, aBarFrame, availSize); nscoord size = vertical ? aReflowState.ComputedHeight() : aReflowState.ComputedWidth(); nscoord xoffset = aReflowState.ComputedPhysicalBorderPadding().left; nscoord yoffset = aReflowState.ComputedPhysicalBorderPadding().top; double position = static_cast<HTMLProgressElement*>(mContent)->Position(); // Force the bar's size to match the current progress. // When indeterminate, the progress' size will be 100%. if (position >= 0.0) { size *= position; } if (!vertical && (wm.IsVertical() ? wm.IsVerticalRL() : !wm.IsBidiLTR())) { xoffset += aReflowState.ComputedWidth() - size; } // The bar size is fixed in these cases: // - the progress position is determined: the bar size is fixed according // to it's value. // - the progress position is indeterminate and the bar appearance should be // shown as native: the bar size is forced to 100%. // Otherwise (when the progress is indeterminate and the bar appearance isn't // native), the bar size isn't fixed and can be set by the author. if (position != -1 || ShouldUseNativeStyle()) { if (vertical) { // We want the bar to begin at the bottom. yoffset += aReflowState.ComputedHeight() - size; size -= reflowState.ComputedPhysicalMargin().TopBottom() + reflowState.ComputedPhysicalBorderPadding().TopBottom(); size = std::max(size, 0); reflowState.SetComputedHeight(size); } else { size -= reflowState.ComputedPhysicalMargin().LeftRight() + reflowState.ComputedPhysicalBorderPadding().LeftRight(); size = std::max(size, 0); reflowState.SetComputedWidth(size); } } else if (vertical) { // For vertical progress bars, we need to position the bar specificly when // the width isn't constrained (position == -1 and !ShouldUseNativeStyle()) // because aReflowState.ComputedHeight() - size == 0. yoffset += aReflowState.ComputedHeight() - reflowState.ComputedHeight(); } xoffset += reflowState.ComputedPhysicalMargin().left; yoffset += reflowState.ComputedPhysicalMargin().top; nsHTMLReflowMetrics barDesiredSize(aReflowState); ReflowChild(aBarFrame, aPresContext, barDesiredSize, reflowState, xoffset, yoffset, 0, aStatus); FinishReflowChild(aBarFrame, aPresContext, barDesiredSize, &reflowState, xoffset, yoffset, 0); }
DrawResult nsFieldSetFrame::PaintBorderBackground( nsDisplayListBuilder* aBuilder, nsRenderingContext& aRenderingContext, nsPoint aPt, const nsRect& aDirtyRect) { // if the border is smaller than the legend. Move the border down // to be centered on the legend. // FIXME: This means border-radius clamping is incorrect; we should // override nsIFrame::GetBorderRadii. WritingMode wm = GetWritingMode(); nsRect rect = VisualBorderRectRelativeToSelf(); nscoord off = wm.IsVertical() ? rect.x : rect.y; rect += aPt; nsPresContext* presContext = PresContext(); uint32_t bgFlags = aBuilder->GetBackgroundPaintFlags(); PaintBorderFlags borderFlags = aBuilder->ShouldSyncDecodeImages() ? PaintBorderFlags::SYNC_DECODE_IMAGES : PaintBorderFlags(); DrawResult result = nsCSSRendering::PaintBackground(presContext, aRenderingContext, this, aDirtyRect, rect, bgFlags); nsCSSRendering::PaintBoxShadowInner(presContext, aRenderingContext, this, rect, aDirtyRect); if (nsIFrame* legend = GetLegend()) { css::Side legendSide = wm.PhysicalSide(eLogicalSideBStart); nscoord legendBorderWidth = StyleBorder()->GetComputedBorderWidth(legendSide); // Use the rect of the legend frame, not mLegendRect, so we draw our // border under the legend's inline-start and -end margins. LogicalRect legendRect(wm, legend->GetRect() + aPt, rect.Size()); // Compute clipRect using logical coordinates, so that the legend space // will be clipped out of the appropriate physical side depending on mode. LogicalRect clipRect = LogicalRect(wm, rect, rect.Size()); DrawTarget* drawTarget = aRenderingContext.GetDrawTarget(); gfxContext* gfx = aRenderingContext.ThebesContext(); int32_t appUnitsPerDevPixel = presContext->AppUnitsPerDevPixel(); // draw inline-start portion of the block-start side of the border clipRect.ISize(wm) = legendRect.IStart(wm) - clipRect.IStart(wm); clipRect.BSize(wm) = legendBorderWidth; gfx->Save(); gfx->Clip(NSRectToSnappedRect(clipRect.GetPhysicalRect(wm, rect.Size()), appUnitsPerDevPixel, *drawTarget)); result &= nsCSSRendering::PaintBorder(presContext, aRenderingContext, this, aDirtyRect, rect, mStyleContext, borderFlags); gfx->Restore(); // draw inline-end portion of the block-start side of the border clipRect = LogicalRect(wm, rect, rect.Size()); clipRect.ISize(wm) = clipRect.IEnd(wm) - legendRect.IEnd(wm); clipRect.IStart(wm) = legendRect.IEnd(wm); clipRect.BSize(wm) = legendBorderWidth; gfx->Save(); gfx->Clip(NSRectToSnappedRect(clipRect.GetPhysicalRect(wm, rect.Size()), appUnitsPerDevPixel, *drawTarget)); result &= nsCSSRendering::PaintBorder(presContext, aRenderingContext, this, aDirtyRect, rect, mStyleContext, borderFlags); gfx->Restore(); // draw remainder of the border (omitting the block-start side) clipRect = LogicalRect(wm, rect, rect.Size()); clipRect.BStart(wm) += legendBorderWidth; clipRect.BSize(wm) = BSize(wm) - (off + legendBorderWidth); gfx->Save(); gfx->Clip(NSRectToSnappedRect(clipRect.GetPhysicalRect(wm, rect.Size()), appUnitsPerDevPixel, *drawTarget)); result &= nsCSSRendering::PaintBorder(presContext, aRenderingContext, this, aDirtyRect, rect, mStyleContext, borderFlags); gfx->Restore(); } else { result &= nsCSSRendering::PaintBorder(presContext, aRenderingContext, this, aDirtyRect, nsRect(aPt, mRect.Size()), mStyleContext, borderFlags); } return result; }
/* virtual */ bool nsInlineFrame::IsSelfEmpty() { #if 0 // I used to think inline frames worked this way, but it seems they // don't. At least not in our codebase. if (GetPresContext()->CompatibilityMode() == eCompatibility_FullStandards) { return false; } #endif const nsStyleMargin* margin = StyleMargin(); const nsStyleBorder* border = StyleBorder(); const nsStylePadding* padding = StylePadding(); // Block-start and -end ignored, since they shouldn't affect things, but this // doesn't really match with nsLineLayout.cpp's setting of // ZeroEffectiveSpanBox, anymore, so what should this really be? WritingMode wm = GetWritingMode(); bool haveStart, haveEnd; // Initially set up haveStart and haveEnd in terms of visual (LTR/TTB) // coordinates; we'll exchange them later if bidi-RTL is in effect to // get logical start and end flags. if (wm.IsVertical()) { haveStart = border->GetComputedBorderWidth(eSideTop) != 0 || !nsLayoutUtils::IsPaddingZero(padding->mPadding.GetTop()) || !IsMarginZero(margin->mMargin.GetTop()); haveEnd = border->GetComputedBorderWidth(eSideBottom) != 0 || !nsLayoutUtils::IsPaddingZero(padding->mPadding.GetBottom()) || !IsMarginZero(margin->mMargin.GetBottom()); } else { haveStart = border->GetComputedBorderWidth(eSideLeft) != 0 || !nsLayoutUtils::IsPaddingZero(padding->mPadding.GetLeft()) || !IsMarginZero(margin->mMargin.GetLeft()); haveEnd = border->GetComputedBorderWidth(eSideRight) != 0 || !nsLayoutUtils::IsPaddingZero(padding->mPadding.GetRight()) || !IsMarginZero(margin->mMargin.GetRight()); } if (haveStart || haveEnd) { // We skip this block and return false for box-decoration-break:clone since // in that case all the continuations will have the border/padding/margin. if ((GetStateBits() & NS_FRAME_PART_OF_IBSPLIT) && StyleBorder()->mBoxDecorationBreak == StyleBoxDecorationBreak::Slice) { // When direction=rtl, we need to consider logical rather than visual // start and end, so swap the flags. if (!wm.IsBidiLTR()) { Swap(haveStart, haveEnd); } // For ib-split frames, ignore things we know we'll skip in GetSkipSides. // XXXbz should we be doing this for non-ib-split frames too, in a more // general way? // Get the first continuation eagerly, as a performance optimization, to // avoid having to get it twice.. nsIFrame* firstCont = FirstContinuation(); return (!haveStart || firstCont->FrameIsNonFirstInIBSplit()) && (!haveEnd || firstCont->FrameIsNonLastInIBSplit()); } return false; } return true; }
void nsHTMLButtonControlFrame::ReflowButtonContents(nsPresContext* aPresContext, nsHTMLReflowMetrics& aButtonDesiredSize, const nsHTMLReflowState& aButtonReflowState, nsIFrame* aFirstKid) { WritingMode wm = GetWritingMode(); bool isVertical = wm.IsVertical(); LogicalSize availSize = aButtonReflowState.ComputedSize(wm); availSize.BSize(wm) = NS_INTRINSICSIZE; // Buttons have some bonus renderer-determined border/padding, // which occupies part of the button's content-box area: const LogicalMargin focusPadding = LogicalMargin(wm, mRenderer.GetAddedButtonBorderAndPadding()); // shorthand for a value we need to use in a bunch of places const LogicalMargin& clbp = aButtonReflowState.ComputedLogicalBorderPadding(); // Indent the child inside us by the focus border. We must do this separate // from the regular border. availSize.ISize(wm) -= focusPadding.IStartEnd(wm); // See whether out availSize's inline-size is big enough. If it's smaller than // our intrinsic min iSize, that means that the kid wouldn't really fit; for a // better look in such cases we adjust the available iSize and our inline-start // offset to allow the kid to spill start-wards into our padding. nscoord ioffset = focusPadding.IStart(wm) + clbp.IStart(wm); nscoord extraISize = GetMinISize(aButtonReflowState.rendContext) - aButtonReflowState.ComputedISize(); if (extraISize > 0) { nscoord extraIStart = extraISize / 2; nscoord extraIEnd = extraISize - extraIStart; NS_ASSERTION(extraIEnd >=0, "How'd that happen?"); // Do not allow the extras to be bigger than the relevant padding const LogicalMargin& padding = aButtonReflowState.ComputedLogicalPadding(); extraIStart = std::min(extraIStart, padding.IStart(wm)); extraIEnd = std::min(extraIEnd, padding.IEnd(wm)); ioffset -= extraIStart; availSize.ISize(wm) = availSize.ISize(wm) + extraIStart + extraIEnd; } availSize.ISize(wm) = std::max(availSize.ISize(wm), 0); // Give child a clone of the button's reflow state, with height/width reduced // by focusPadding, so that descendants with height:100% don't protrude. nsHTMLReflowState adjustedButtonReflowState = CloneReflowStateWithReducedContentBox(aButtonReflowState, focusPadding.GetPhysicalMargin(wm)); nsHTMLReflowState contentsReflowState(aPresContext, adjustedButtonReflowState, aFirstKid, availSize); nsReflowStatus contentsReflowStatus; nsHTMLReflowMetrics contentsDesiredSize(aButtonReflowState); nscoord boffset = focusPadding.BStart(wm) + clbp.BStart(wm); ReflowChild(aFirstKid, aPresContext, contentsDesiredSize, contentsReflowState, isVertical ? boffset : ioffset, isVertical ? ioffset : boffset, 0, contentsReflowStatus); MOZ_ASSERT(NS_FRAME_IS_COMPLETE(contentsReflowStatus), "We gave button-contents frame unconstrained available height, " "so it should be complete"); // Compute the button's content-box height: nscoord buttonContentBoxBSize = 0; if (aButtonReflowState.ComputedBSize() != NS_INTRINSICSIZE) { // Button has a fixed block-size -- that's its content-box bSize. buttonContentBoxBSize = aButtonReflowState.ComputedBSize(); } else { // Button is intrinsically sized -- it should shrinkwrap the // button-contents' bSize, plus any focus-padding space: buttonContentBoxBSize = contentsDesiredSize.BSize(wm) + focusPadding.BStartEnd(wm); // Make sure we obey min/max-bSize in the case when we're doing intrinsic // sizing (we get it for free when we have a non-intrinsic // aButtonReflowState.ComputedBSize()). Note that we do this before // adjusting for borderpadding, since mComputedMaxBSize and // mComputedMinBSize are content bSizes. buttonContentBoxBSize = NS_CSS_MINMAX(buttonContentBoxBSize, aButtonReflowState.ComputedMinBSize(), aButtonReflowState.ComputedMaxBSize()); } // Center child in the block-direction in the button // (technically, inside of the button's focus-padding area) nscoord extraSpace = buttonContentBoxBSize - focusPadding.BStartEnd(wm) - contentsDesiredSize.BSize(wm); boffset = std::max(0, extraSpace / 2); // Adjust boffset to be in terms of the button's frame-rect, instead of // its focus-padding rect: boffset += focusPadding.BStart(wm) + clbp.BStart(wm); // Place the child FinishReflowChild(aFirstKid, aPresContext, contentsDesiredSize, &contentsReflowState, isVertical ? boffset : ioffset, isVertical ? ioffset : boffset, 0); // Make sure we have a useful 'ascent' value for the child if (contentsDesiredSize.BlockStartAscent() == nsHTMLReflowMetrics::ASK_FOR_BASELINE) { WritingMode wm = aButtonReflowState.GetWritingMode(); contentsDesiredSize.SetBlockStartAscent(aFirstKid->GetLogicalBaseline(wm)); } // OK, we're done with the child frame. // Use what we learned to populate the button frame's reflow metrics. // * Button's height & width are content-box size + border-box contribution: aButtonDesiredSize.SetSize(wm, LogicalSize(wm, aButtonReflowState.ComputedISize() + clbp.IStartEnd(wm), buttonContentBoxBSize + clbp.BStartEnd(wm))); // * Button's ascent is its child's ascent, plus the child's block-offset // within our frame... unless it's orthogonal, in which case we'll use the // contents inline-size as an approximation for now. // XXX is there a better strategy? should we include border-padding? if (aButtonDesiredSize.GetWritingMode().IsOrthogonalTo(wm)) { aButtonDesiredSize.SetBlockStartAscent(contentsDesiredSize.ISize(wm)); } else { aButtonDesiredSize.SetBlockStartAscent(contentsDesiredSize.BlockStartAscent() + boffset); } aButtonDesiredSize.SetOverflowAreasToDesiredBounds(); }
void nsColumnSetFrame::PaintColumnRule(nsRenderingContext* aCtx, const nsRect& aDirtyRect, const nsPoint& aPt) { nsIFrame* child = mFrames.FirstChild(); if (!child) return; // no columns nsIFrame* nextSibling = child->GetNextSibling(); if (!nextSibling) return; // 1 column only - this means no gap to draw on WritingMode wm = GetWritingMode(); bool isVertical = wm.IsVertical(); bool isRTL = !wm.IsBidiLTR(); const nsStyleColumn* colStyle = StyleColumn(); uint8_t ruleStyle; // Per spec, inset => ridge and outset => groove if (colStyle->mColumnRuleStyle == NS_STYLE_BORDER_STYLE_INSET) ruleStyle = NS_STYLE_BORDER_STYLE_RIDGE; else if (colStyle->mColumnRuleStyle == NS_STYLE_BORDER_STYLE_OUTSET) ruleStyle = NS_STYLE_BORDER_STYLE_GROOVE; else ruleStyle = colStyle->mColumnRuleStyle; nsPresContext* presContext = PresContext(); nscoord ruleWidth = colStyle->GetComputedColumnRuleWidth(); if (!ruleWidth) return; nscolor ruleColor = GetVisitedDependentColor(eCSSProperty_column_rule_color); // In order to re-use a large amount of code, we treat the column rule as a border. // We create a new border style object and fill in all the details of the column rule as // the left border. PaintBorder() does all the rendering for us, so we not // only save an enormous amount of code but we'll support all the line styles that // we support on borders! nsStyleBorder border(presContext); Sides skipSides; if (isVertical) { border.SetBorderWidth(eSideTop, ruleWidth); border.SetBorderStyle(eSideTop, ruleStyle); border.mBorderTopColor = StyleComplexColor::FromColor(ruleColor); skipSides |= mozilla::eSideBitsLeftRight; skipSides |= mozilla::eSideBitsBottom; } else { border.SetBorderWidth(eSideLeft, ruleWidth); border.SetBorderStyle(eSideLeft, ruleStyle); border.mBorderLeftColor = StyleComplexColor::FromColor(ruleColor); skipSides |= mozilla::eSideBitsTopBottom; skipSides |= mozilla::eSideBitsRight; } // Get our content rect as an absolute coordinate, not relative to // our parent (which is what the X and Y normally is) nsRect contentRect = GetContentRect() - GetRect().TopLeft() + aPt; nsSize ruleSize = isVertical ? nsSize(contentRect.width, ruleWidth) : nsSize(ruleWidth, contentRect.height); while (nextSibling) { // The frame tree goes RTL in RTL. // The |prevFrame| and |nextFrame| frames here are the visually preceding // (left/above) and following (right/below) frames, not in logical writing- // mode direction. nsIFrame* prevFrame = isRTL ? nextSibling : child; nsIFrame* nextFrame = isRTL ? child : nextSibling; // Each child frame's position coordinates is actually relative to this // nsColumnSetFrame. // linePt will be at the top-left edge to paint the line. nsPoint linePt; if (isVertical) { nscoord edgeOfPrev = prevFrame->GetRect().YMost() + aPt.y; nscoord edgeOfNext = nextFrame->GetRect().Y() + aPt.y; linePt = nsPoint(contentRect.x, (edgeOfPrev + edgeOfNext - ruleSize.height) / 2); } else { nscoord edgeOfPrev = prevFrame->GetRect().XMost() + aPt.x; nscoord edgeOfNext = nextFrame->GetRect().X() + aPt.x; linePt = nsPoint((edgeOfPrev + edgeOfNext - ruleSize.width) / 2, contentRect.y); } nsRect lineRect(linePt, ruleSize); // Assert that we're not drawing a border-image here; if we were, we // couldn't ignore the DrawResult that PaintBorderWithStyleBorder returns. MOZ_ASSERT(border.mBorderImageSource.GetType() == eStyleImageType_Null); Unused << nsCSSRendering::PaintBorderWithStyleBorder(presContext, *aCtx, this, aDirtyRect, lineRect, border, StyleContext(), PaintBorderFlags::SYNC_DECODE_IMAGES, skipSides); child = nextSibling; nextSibling = nextSibling->GetNextSibling(); } }
void nsFieldSetFrame::Reflow(nsPresContext* aPresContext, nsHTMLReflowMetrics& aDesiredSize, const nsHTMLReflowState& aReflowState, nsReflowStatus& aStatus) { DO_GLOBAL_REFLOW_COUNT("nsFieldSetFrame"); DISPLAY_REFLOW(aPresContext, this, aReflowState, aDesiredSize, aStatus); NS_PRECONDITION(aReflowState.ComputedISize() != NS_INTRINSICSIZE, "Should have a precomputed inline-size!"); // Initialize OUT parameter aStatus = NS_FRAME_COMPLETE; nsOverflowAreas ocBounds; nsReflowStatus ocStatus = NS_FRAME_COMPLETE; if (GetPrevInFlow()) { ReflowOverflowContainerChildren(aPresContext, aReflowState, ocBounds, 0, ocStatus); } //------------ Handle Incremental Reflow ----------------- bool reflowInner; bool reflowLegend; nsIFrame* legend = GetLegend(); nsIFrame* inner = GetInner(); if (aReflowState.ShouldReflowAllKids()) { reflowInner = inner != nullptr; reflowLegend = legend != nullptr; } else { reflowInner = inner && NS_SUBTREE_DIRTY(inner); reflowLegend = legend && NS_SUBTREE_DIRTY(legend); } // We don't allow fieldsets to break vertically. If we did, we'd // need logic here to push and pull overflow frames. // Since we're not applying our padding in this frame, we need to add it here // to compute the available width for our children. WritingMode wm = GetWritingMode(); WritingMode innerWM = inner ? inner->GetWritingMode() : wm; WritingMode legendWM = legend ? legend->GetWritingMode() : wm; LogicalSize innerAvailSize = aReflowState.ComputedSizeWithPadding(innerWM); LogicalSize legendAvailSize = aReflowState.ComputedSizeWithPadding(legendWM); innerAvailSize.BSize(innerWM) = legendAvailSize.BSize(legendWM) = NS_UNCONSTRAINEDSIZE; NS_ASSERTION(!inner || nsLayoutUtils::IntrinsicForContainer(aReflowState.rendContext, inner, nsLayoutUtils::MIN_ISIZE) <= innerAvailSize.ISize(innerWM), "Bogus availSize.ISize; should be bigger"); NS_ASSERTION(!legend || nsLayoutUtils::IntrinsicForContainer(aReflowState.rendContext, legend, nsLayoutUtils::MIN_ISIZE) <= legendAvailSize.ISize(legendWM), "Bogus availSize.ISize; should be bigger"); // get our border and padding nsMargin border = aReflowState.ComputedPhysicalBorderPadding() - aReflowState.ComputedPhysicalPadding(); LogicalMargin logBorder(wm, border); // Figure out how big the legend is if there is one. // get the legend's margin LogicalMargin legendMargin(wm); // reflow the legend only if needed Maybe<nsHTMLReflowState> legendReflowState; if (legend) { legendReflowState.emplace(aPresContext, aReflowState, legend, legendAvailSize); } if (reflowLegend) { nsHTMLReflowMetrics legendDesiredSize(aReflowState); ReflowChild(legend, aPresContext, legendDesiredSize, *legendReflowState, 0, 0, NS_FRAME_NO_MOVE_FRAME, aStatus); #ifdef NOISY_REFLOW printf(" returned (%d, %d)\n", legendDesiredSize.Width(), legendDesiredSize.Height()); #endif // figure out the legend's rectangle legendMargin = legend->GetLogicalUsedMargin(wm); mLegendRect = LogicalRect(wm, 0, 0, legendDesiredSize.ISize(wm) + legendMargin.IStartEnd(wm), legendDesiredSize.BSize(wm) + legendMargin.BStartEnd(wm)); nscoord oldSpace = mLegendSpace; mLegendSpace = 0; if (mLegendRect.BSize(wm) > logBorder.BStart(wm)) { // center the border on the legend mLegendSpace = mLegendRect.BSize(wm) - logBorder.BStart(wm); } else { mLegendRect.BStart(wm) = (logBorder.BStart(wm) - mLegendRect.BSize(wm)) / 2; } // if the legend space changes then we need to reflow the // content area as well. if (mLegendSpace != oldSpace && inner) { reflowInner = true; } // We'll move the legend to its proper place later. FinishReflowChild(legend, aPresContext, legendDesiredSize, legendReflowState.ptr(), 0, 0, NS_FRAME_NO_MOVE_FRAME); } else if (!legend) { mLegendRect.SetEmpty(); mLegendSpace = 0; } else { // mLegendSpace and mLegendRect haven't changed, but we need // the used margin when placing the legend. legendMargin = legend->GetLogicalUsedMargin(wm); } // reflow the content frame only if needed if (reflowInner) { nsHTMLReflowState kidReflowState(aPresContext, aReflowState, inner, innerAvailSize, -1, -1, nsHTMLReflowState::CALLER_WILL_INIT); // Override computed padding, in case it's percentage padding kidReflowState.Init(aPresContext, -1, -1, nullptr, &aReflowState.ComputedPhysicalPadding()); // Our child is "height:100%" but we actually want its height to be reduced // by the amount of content-height the legend is eating up, unless our // height is unconstrained (in which case the child's will be too). if (aReflowState.ComputedHeight() != NS_UNCONSTRAINEDSIZE) { kidReflowState.SetComputedHeight( std::max(0, aReflowState.ComputedHeight() - mLegendSpace)); } if (aReflowState.ComputedMinHeight() > 0) { kidReflowState.ComputedMinHeight() = std::max(0, aReflowState.ComputedMinHeight() - mLegendSpace); } if (aReflowState.ComputedMaxHeight() != NS_UNCONSTRAINEDSIZE) { kidReflowState.ComputedMaxHeight() = std::max(0, aReflowState.ComputedMaxHeight() - mLegendSpace); } nsHTMLReflowMetrics kidDesiredSize(kidReflowState, aDesiredSize.mFlags); // Reflow the frame NS_ASSERTION(kidReflowState.ComputedPhysicalMargin() == nsMargin(0,0,0,0), "Margins on anonymous fieldset child not supported!"); nsPoint pt(border.left, border.top); if (wm.IsVerticalLR()) { pt.x += mLegendSpace; } else if (!wm.IsVertical()) { pt.y += mLegendSpace; } ReflowChild(inner, aPresContext, kidDesiredSize, kidReflowState, pt.x, pt.y, 0, aStatus); FinishReflowChild(inner, aPresContext, kidDesiredSize, &kidReflowState, pt.x, pt.y, 0); NS_FRAME_TRACE_REFLOW_OUT("FieldSet::Reflow", aStatus); } nscoord containerWidth = (wm.IsVertical() ? mLegendSpace : 0) + logBorder.LeftRight(wm) + (inner ? inner->GetSize().width : 0); LogicalRect contentRect(wm); if (inner) { // We don't support margins on inner, so our content rect is just the // inner's border-box. We don't care about container-width at this point, // as we'll figure out the actual positioning later. contentRect = inner->GetLogicalRect(wm, containerWidth); } // Our content rect must fill up the available width LogicalSize availSize = aReflowState.ComputedSizeWithPadding(wm); if (availSize.ISize(wm) > contentRect.ISize(wm)) { contentRect.ISize(wm) = innerAvailSize.ISize(wm); } if (legend) { // The legend is positioned inline-wards within the inner's content rect // (so that padding on the fieldset affects the legend position). LogicalRect innerContentRect = contentRect; innerContentRect.Deflate(wm, aReflowState.ComputedLogicalPadding()); // If the inner content rect is larger than the legend, we can align the // legend. if (innerContentRect.ISize(wm) > mLegendRect.ISize(wm)) { int32_t align = static_cast<nsLegendFrame*> (legend->GetContentInsertionFrame())->GetAlign(); if (!wm.IsBidiLTR()) { if (align == NS_STYLE_TEXT_ALIGN_LEFT || align == NS_STYLE_TEXT_ALIGN_MOZ_LEFT) { align = NS_STYLE_TEXT_ALIGN_END; } else if (align == NS_STYLE_TEXT_ALIGN_RIGHT || align == NS_STYLE_TEXT_ALIGN_MOZ_RIGHT) { align = NS_STYLE_TEXT_ALIGN_DEFAULT; } } switch (align) { case NS_STYLE_TEXT_ALIGN_END: mLegendRect.IStart(wm) = innerContentRect.IEnd(wm) - mLegendRect.ISize(wm); break; case NS_STYLE_TEXT_ALIGN_CENTER: case NS_STYLE_TEXT_ALIGN_MOZ_CENTER: // Note: rounding removed; there doesn't seem to be any need mLegendRect.IStart(wm) = innerContentRect.IStart(wm) + (innerContentRect.ISize(wm) - mLegendRect.ISize(wm)) / 2; break; default: mLegendRect.IStart(wm) = innerContentRect.IStart(wm); break; } } else { // otherwise make place for the legend mLegendRect.IStart(wm) = innerContentRect.IStart(wm); innerContentRect.ISize(wm) = mLegendRect.ISize(wm); contentRect.ISize(wm) = mLegendRect.ISize(wm) + aReflowState.ComputedLogicalPadding().IStartEnd(wm); } // place the legend LogicalRect actualLegendRect = mLegendRect; actualLegendRect.Deflate(wm, legendMargin); LogicalPoint actualLegendPos(actualLegendRect.Origin(wm)); legendReflowState->ApplyRelativePositioning(&actualLegendPos, containerWidth); legend->SetPosition(wm, actualLegendPos, containerWidth); nsContainerFrame::PositionFrameView(legend); nsContainerFrame::PositionChildViews(legend); } // Return our size and our result. LogicalSize finalSize(wm, contentRect.ISize(wm) + logBorder.IStartEnd(wm), mLegendSpace + logBorder.BStartEnd(wm) + (inner ? inner->GetLogicalSize(wm).BSize(wm) : 0)); aDesiredSize.SetSize(wm, finalSize); aDesiredSize.SetOverflowAreasToDesiredBounds(); if (legend) { ConsiderChildOverflow(aDesiredSize.mOverflowAreas, legend); } if (inner) { ConsiderChildOverflow(aDesiredSize.mOverflowAreas, inner); } // Merge overflow container bounds and status. aDesiredSize.mOverflowAreas.UnionWith(ocBounds); NS_MergeReflowStatusInto(&aStatus, ocStatus); FinishReflowWithAbsoluteFrames(aPresContext, aDesiredSize, aReflowState, aStatus); InvalidateFrame(); NS_FRAME_SET_TRUNCATION(aStatus, aReflowState, aDesiredSize); }
void nsCaret::ComputeCaretRects(nsIFrame* aFrame, int32_t aFrameOffset, nsRect* aCaretRect, nsRect* aHookRect) { NS_ASSERTION(aFrame, "Should have a frame here"); WritingMode wm = aFrame->GetWritingMode(); bool isVertical = wm.IsVertical(); nscoord bidiIndicatorSize; *aCaretRect = GetGeometryForFrame(aFrame, aFrameOffset, &bidiIndicatorSize); // on RTL frames the right edge of mCaretRect must be equal to framePos const nsStyleVisibility* vis = aFrame->StyleVisibility(); if (NS_STYLE_DIRECTION_RTL == vis->mDirection) { if (isVertical) { aCaretRect->y -= aCaretRect->height; } else { aCaretRect->x -= aCaretRect->width; } } // Simon -- make a hook to draw to the left or right of the caret to show keyboard language direction aHookRect->SetEmpty(); if (!IsBidiUI()) { return; } bool isCaretRTL; nsIBidiKeyboard* bidiKeyboard = nsContentUtils::GetBidiKeyboard(); // if bidiKeyboard->IsLangRTL() fails, there is no way to tell the // keyboard direction, or the user has no right-to-left keyboard // installed, so we never draw the hook. if (bidiKeyboard && NS_SUCCEEDED(bidiKeyboard->IsLangRTL(&isCaretRTL))) { // If keyboard language is RTL, draw the hook on the left; if LTR, to the right // The height of the hook rectangle is the same as the width of the caret // rectangle. if (isVertical) { bool isSidewaysLR = wm.IsVerticalLR() && !wm.IsLineInverted(); if (isSidewaysLR) { aHookRect->SetRect(aCaretRect->x + bidiIndicatorSize, aCaretRect->y + (!isCaretRTL ? bidiIndicatorSize * -1 : aCaretRect->height), aCaretRect->height, bidiIndicatorSize); } else { aHookRect->SetRect(aCaretRect->XMost() - bidiIndicatorSize, aCaretRect->y + (isCaretRTL ? bidiIndicatorSize * -1 : aCaretRect->height), aCaretRect->height, bidiIndicatorSize); } } else { aHookRect->SetRect(aCaretRect->x + (isCaretRTL ? bidiIndicatorSize * -1 : aCaretRect->width), aCaretRect->y + bidiIndicatorSize, bidiIndicatorSize, aCaretRect->width); } } }
/* static */ nsRect nsCaret::GetGeometryForFrame(nsIFrame* aFrame, int32_t aFrameOffset, nscoord* aBidiIndicatorSize) { nsPoint framePos(0, 0); nsRect rect; nsresult rv = aFrame->GetPointFromOffset(aFrameOffset, &framePos); if (NS_FAILED(rv)) { if (aBidiIndicatorSize) { *aBidiIndicatorSize = 0; } return rect; } nsIFrame* frame = aFrame->GetContentInsertionFrame(); if (!frame) { frame = aFrame; } NS_ASSERTION(!(frame->GetStateBits() & NS_FRAME_IN_REFLOW), "We should not be in the middle of reflow"); nscoord baseline = frame->GetCaretBaseline(); nscoord ascent = 0, descent = 0; RefPtr<nsFontMetrics> fm; nsLayoutUtils::GetFontMetricsForFrame(aFrame, getter_AddRefs(fm), nsLayoutUtils::FontSizeInflationFor(aFrame)); NS_ASSERTION(fm, "We should be able to get the font metrics"); if (fm) { ascent = fm->MaxAscent(); descent = fm->MaxDescent(); } nscoord height = ascent + descent; WritingMode wm = aFrame->GetWritingMode(); bool vertical = wm.IsVertical(); if (vertical) { if (wm.IsLineInverted()) { framePos.x = baseline - descent; } else { framePos.x = baseline - ascent; } } else { framePos.y = baseline - ascent; } Metrics caretMetrics = ComputeMetrics(aFrame, aFrameOffset, height); rect = nsRect(framePos, vertical ? nsSize(height, caretMetrics.mCaretWidth) : nsSize(caretMetrics.mCaretWidth, height)); // Clamp the inline-position to be within our scroll frame. If we don't, then // it clips us, and we don't appear at all. See bug 335560. nsIFrame *scrollFrame = nsLayoutUtils::GetClosestFrameOfType(aFrame, nsGkAtoms::scrollFrame); if (scrollFrame) { // First, use the scrollFrame to get at the scrollable view that we're in. nsIScrollableFrame *sf = do_QueryFrame(scrollFrame); nsIFrame *scrolled = sf->GetScrolledFrame(); nsRect caretInScroll = rect + aFrame->GetOffsetTo(scrolled); // Now see if the caret extends beyond the view's bounds. If it does, // then snap it back, put it as close to the edge as it can. if (vertical) { nscoord overflow = caretInScroll.YMost() - scrolled->GetVisualOverflowRectRelativeToSelf().height; if (overflow > 0) { rect.y -= overflow; } } else { nscoord overflow = caretInScroll.XMost() - scrolled->GetVisualOverflowRectRelativeToSelf().width; if (overflow > 0) { rect.x -= overflow; } } } if (aBidiIndicatorSize) { *aBidiIndicatorSize = caretMetrics.mBidiIndicatorSize; } return rect; }
void nsFirstLetterFrame::Reflow(nsPresContext* aPresContext, ReflowOutput& aMetrics, const ReflowInput& aReflowInput, nsReflowStatus& aReflowStatus) { MarkInReflow(); DO_GLOBAL_REFLOW_COUNT("nsFirstLetterFrame"); DISPLAY_REFLOW(aPresContext, this, aReflowInput, aMetrics, aReflowStatus); // Grab overflow list DrainOverflowFrames(aPresContext); nsIFrame* kid = mFrames.FirstChild(); // Setup reflow state for our child WritingMode wm = aReflowInput.GetWritingMode(); LogicalSize availSize = aReflowInput.AvailableSize(); const LogicalMargin& bp = aReflowInput.ComputedLogicalBorderPadding(); NS_ASSERTION(availSize.ISize(wm) != NS_UNCONSTRAINEDSIZE, "should no longer use unconstrained inline size"); availSize.ISize(wm) -= bp.IStartEnd(wm); if (NS_UNCONSTRAINEDSIZE != availSize.BSize(wm)) { availSize.BSize(wm) -= bp.BStartEnd(wm); } WritingMode lineWM = aMetrics.GetWritingMode(); ReflowOutput kidMetrics(lineWM); // Reflow the child if (!aReflowInput.mLineLayout) { // When there is no lineLayout provided, we provide our own. The // only time that the first-letter-frame is not reflowing in a // line context is when its floating. WritingMode kidWritingMode = WritingModeForLine(wm, kid); LogicalSize kidAvailSize = availSize.ConvertTo(kidWritingMode, wm); ReflowInput rs(aPresContext, aReflowInput, kid, kidAvailSize); nsLineLayout ll(aPresContext, nullptr, &aReflowInput, nullptr, nullptr); ll.BeginLineReflow(bp.IStart(wm), bp.BStart(wm), availSize.ISize(wm), NS_UNCONSTRAINEDSIZE, false, true, kidWritingMode, nsSize(aReflowInput.AvailableWidth(), aReflowInput.AvailableHeight())); rs.mLineLayout = ≪ ll.SetInFirstLetter(true); ll.SetFirstLetterStyleOK(true); kid->Reflow(aPresContext, kidMetrics, rs, aReflowStatus); ll.EndLineReflow(); ll.SetInFirstLetter(false); // In the floating first-letter case, we need to set this ourselves; // nsLineLayout::BeginSpan will set it in the other case mBaseline = kidMetrics.BlockStartAscent(); // Place and size the child and update the output metrics LogicalSize convertedSize = kidMetrics.Size(lineWM).ConvertTo(wm, lineWM); kid->SetRect(nsRect(bp.IStart(wm), bp.BStart(wm), convertedSize.ISize(wm), convertedSize.BSize(wm))); kid->FinishAndStoreOverflow(&kidMetrics); kid->DidReflow(aPresContext, nullptr, nsDidReflowStatus::FINISHED); convertedSize.ISize(wm) += bp.IStartEnd(wm); convertedSize.BSize(wm) += bp.BStartEnd(wm); aMetrics.SetSize(wm, convertedSize); aMetrics.SetBlockStartAscent(kidMetrics.BlockStartAscent() + bp.BStart(wm)); // Ensure that the overflow rect contains the child textframe's // overflow rect. // Note that if this is floating, the overline/underline drawable // area is in the overflow rect of the child textframe. aMetrics.UnionOverflowAreasWithDesiredBounds(); ConsiderChildOverflow(aMetrics.mOverflowAreas, kid); FinishAndStoreOverflow(&aMetrics); } else { // Pretend we are a span and reflow the child frame nsLineLayout* ll = aReflowInput.mLineLayout; bool pushedFrame; ll->SetInFirstLetter( mStyleContext->GetPseudo() == nsCSSPseudoElements::firstLetter); ll->BeginSpan(this, &aReflowInput, bp.IStart(wm), availSize.ISize(wm), &mBaseline); ll->ReflowFrame(kid, aReflowStatus, &kidMetrics, pushedFrame); NS_ASSERTION(lineWM.IsVertical() == wm.IsVertical(), "we're assuming we can mix sizes between lineWM and wm " "since we shouldn't have orthogonal writing modes within " "a line."); aMetrics.ISize(lineWM) = ll->EndSpan(this) + bp.IStartEnd(wm); ll->SetInFirstLetter(false); if (mStyleContext->StyleTextReset()->mInitialLetterSize != 0.0f) { aMetrics.SetBlockStartAscent(kidMetrics.BlockStartAscent() + bp.BStart(wm)); aMetrics.BSize(lineWM) = kidMetrics.BSize(lineWM) + bp.BStartEnd(wm); } else { nsLayoutUtils::SetBSizeFromFontMetrics(this, aMetrics, bp, lineWM, wm); } } if (!NS_INLINE_IS_BREAK_BEFORE(aReflowStatus)) { // Create a continuation or remove existing continuations based on // the reflow completion status. if (NS_FRAME_IS_COMPLETE(aReflowStatus)) { if (aReflowInput.mLineLayout) { aReflowInput.mLineLayout->SetFirstLetterStyleOK(false); } nsIFrame* kidNextInFlow = kid->GetNextInFlow(); if (kidNextInFlow) { // Remove all of the childs next-in-flows kidNextInFlow->GetParent()->DeleteNextInFlowChild(kidNextInFlow, true); } } else { // Create a continuation for the child frame if it doesn't already // have one. if (!IsFloating()) { CreateNextInFlow(kid); // And then push it to our overflow list const nsFrameList& overflow = mFrames.RemoveFramesAfter(kid); if (overflow.NotEmpty()) { SetOverflowFrames(overflow); } } else if (!kid->GetNextInFlow()) { // For floating first letter frames (if a continuation wasn't already // created for us) we need to put the continuation with the rest of the // text that the first letter frame was made out of. nsIFrame* continuation; CreateContinuationForFloatingParent(aPresContext, kid, &continuation, true); } } } NS_FRAME_SET_TRUNCATION(aReflowStatus, aReflowInput, aMetrics); }
bool nsAbsoluteContainingBlock::FrameDependsOnContainer(nsIFrame* f, bool aCBWidthChanged, bool aCBHeightChanged) { const nsStylePosition* pos = f->StylePosition(); // See if f's position might have changed because it depends on a // placeholder's position // This can happen in the following cases: // 1) Vertical positioning. "top" must be auto and "bottom" must be auto // (otherwise the vertical position is completely determined by // whichever of them is not auto and the height). // 2) Horizontal positioning. "left" must be auto and "right" must be auto // (otherwise the horizontal position is completely determined by // whichever of them is not auto and the width). // See nsHTMLReflowState::InitAbsoluteConstraints -- these are the // only cases when we call CalculateHypotheticalBox(). if ((pos->mOffset.GetTopUnit() == eStyleUnit_Auto && pos->mOffset.GetBottomUnit() == eStyleUnit_Auto) || (pos->mOffset.GetLeftUnit() == eStyleUnit_Auto && pos->mOffset.GetRightUnit() == eStyleUnit_Auto)) { return true; } if (!aCBWidthChanged && !aCBHeightChanged) { // skip getting style data return false; } const nsStylePadding* padding = f->StylePadding(); const nsStyleMargin* margin = f->StyleMargin(); WritingMode wm = f->GetWritingMode(); if (wm.IsVertical() ? aCBHeightChanged : aCBWidthChanged) { // See if f's inline-size might have changed. // If margin-inline-start/end, padding-inline-start/end, // inline-size, min/max-inline-size are all lengths, 'none', or enumerated, // then our frame isize does not depend on the parent isize. // Note that borders never depend on the parent isize. // XXX All of the enumerated values except -moz-available are ok too. if (pos->ISizeDependsOnContainer(wm) || pos->MinISizeDependsOnContainer(wm) || pos->MaxISizeDependsOnContainer(wm) || !IsFixedPaddingSize(padding->mPadding.GetIStart(wm)) || !IsFixedPaddingSize(padding->mPadding.GetIEnd(wm))) { return true; } // See if f's position might have changed. If we're RTL then the // rules are slightly different. We'll assume percentage or auto // margins will always induce a dependency on the size if (!IsFixedMarginSize(margin->mMargin.GetIStart(wm)) || !IsFixedMarginSize(margin->mMargin.GetIEnd(wm))) { return true; } if (!wm.IsBidiLTR()) { // Note that even if 'istart' is a length, our position can // still depend on the containing block isze, because if // 'iend' is also a length we will discard 'istart' and be // positioned relative to the containing block iend edge. // 'istart' length and 'iend' auto is the only combination // we can be sure of. if (!IsFixedOffset(pos->mOffset.GetIStart(wm)) || pos->mOffset.GetIEndUnit(wm) != eStyleUnit_Auto) { return true; } } else { if (!IsFixedOffset(pos->mOffset.GetIStart(wm))) { return true; } } } if (wm.IsVertical() ? aCBWidthChanged : aCBHeightChanged) { // See if f's block-size might have changed. // If margin-block-start/end, padding-block-start/end, // min-block-size, and max-block-size are all lengths or 'none', // and bsize is a length or bsize and bend are auto and bstart is not auto, // then our frame bsize does not depend on the parent bsize. // Note that borders never depend on the parent bsize. if ((pos->BSizeDependsOnContainer(wm) && !(pos->BSize(wm).GetUnit() == eStyleUnit_Auto && pos->mOffset.GetBEndUnit(wm) == eStyleUnit_Auto && pos->mOffset.GetBStartUnit(wm) != eStyleUnit_Auto)) || pos->MinBSizeDependsOnContainer(wm) || pos->MaxBSizeDependsOnContainer(wm) || !IsFixedPaddingSize(padding->mPadding.GetBStart(wm)) || !IsFixedPaddingSize(padding->mPadding.GetBEnd(wm))) { return true; } // See if f's position might have changed. if (!IsFixedMarginSize(margin->mMargin.GetBStart(wm)) || !IsFixedMarginSize(margin->mMargin.GetBEnd(wm))) { return true; } if (!IsFixedOffset(pos->mOffset.GetBStart(wm))) { return true; } } return false; }
bool nsColumnSetFrame::ReflowChildren(ReflowOutput& aDesiredSize, const ReflowInput& aReflowInput, nsReflowStatus& aStatus, const ReflowConfig& aConfig, bool aUnboundedLastColumn, nsCollapsingMargin* aCarriedOutBEndMargin, ColumnBalanceData& aColData) { aColData.Reset(); bool allFit = true; WritingMode wm = GetWritingMode(); bool isVertical = wm.IsVertical(); bool isRTL = !wm.IsBidiLTR(); bool shrinkingBSizeOnly = !NS_SUBTREE_DIRTY(this) && mLastBalanceBSize > aConfig.mColMaxBSize; #ifdef DEBUG_roc printf("*** Doing column reflow pass: mLastBalanceBSize=%d, mColMaxBSize=%d, RTL=%d\n" " mBalanceColCount=%d, mColISize=%d, mColGap=%d\n", mLastBalanceBSize, aConfig.mColMaxBSize, isRTL, aConfig.mBalanceColCount, aConfig.mColISize, aConfig.mColGap); #endif DrainOverflowColumns(); const bool colBSizeChanged = mLastBalanceBSize != aConfig.mColMaxBSize; if (colBSizeChanged) { mLastBalanceBSize = aConfig.mColMaxBSize; // XXX Seems like this could fire if incremental reflow pushed the column set // down so we reflow incrementally with a different available height. // We need a way to do an incremental reflow and be sure availableHeight // changes are taken account of! Right now I think block frames with absolute // children might exit early. //NS_ASSERTION(aKidReason != eReflowReason_Incremental, // "incremental reflow should not have changed the balance height"); } // get our border and padding LogicalMargin borderPadding = aReflowInput.ComputedLogicalBorderPadding(); borderPadding.ApplySkipSides(GetLogicalSkipSides(&aReflowInput)); nsRect contentRect(0, 0, 0, 0); nsOverflowAreas overflowRects; nsIFrame* child = mFrames.FirstChild(); LogicalPoint childOrigin(wm, borderPadding.IStart(wm), borderPadding.BStart(wm)); // In vertical-rl mode, columns will not be correctly placed if the // reflowInput's ComputedWidth() is UNCONSTRAINED (in which case we'll get // a containerSize.width of zero here). In that case, the column positions // will be adjusted later, after our correct contentSize is known. nsSize containerSize = aReflowInput.ComputedSizeAsContainerIfConstrained(); // For RTL, since the columns might not fill the frame exactly, we // need to account for the slop. Otherwise we'll waste time moving the // columns by some tiny amount // XXX when all of layout is converted to logical coordinates, we // probably won't need to do this hack any more. For now, we // confine it to the legacy horizontal-rl case if (!isVertical && isRTL) { nscoord availISize = aReflowInput.AvailableISize(); if (aReflowInput.ComputedISize() != NS_INTRINSICSIZE) { availISize = aReflowInput.ComputedISize(); } if (availISize != NS_INTRINSICSIZE) { childOrigin.I(wm) = containerSize.width - borderPadding.Left(wm) - availISize; #ifdef DEBUG_roc printf("*** childOrigin.iCoord = %d\n", childOrigin.I(wm)); #endif } } int columnCount = 0; int contentBEnd = 0; bool reflowNext = false; while (child) { // Try to skip reflowing the child. We can't skip if the child is dirty. We also can't // skip if the next column is dirty, because the next column's first line(s) // might be pullable back to this column. We can't skip if it's the last child // because we need to obtain the bottom margin. We can't skip // if this is the last column and we're supposed to assign unbounded // height to it, because that could change the available height from // the last time we reflowed it and we should try to pull all the // content from its next sibling. (Note that it might be the last // column, but not be the last child because the desired number of columns // has changed.) bool skipIncremental = !aReflowInput.ShouldReflowAllKids() && !NS_SUBTREE_DIRTY(child) && child->GetNextSibling() && !(aUnboundedLastColumn && columnCount == aConfig.mBalanceColCount - 1) && !NS_SUBTREE_DIRTY(child->GetNextSibling()); // If we need to pull up content from the prev-in-flow then this is not just // a height shrink. The prev in flow will have set the dirty bit. // Check the overflow rect YMost instead of just the child's content height. The child // may have overflowing content that cares about the available height boundary. // (It may also have overflowing content that doesn't care about the available height // boundary, but if so, too bad, this optimization is defeated.) // We want scrollable overflow here since this is a calculation that // affects layout. bool skipResizeBSizeShrink = false; if (shrinkingBSizeOnly) { switch (wm.GetBlockDir()) { case WritingMode::eBlockTB: if (child->GetScrollableOverflowRect().YMost() <= aConfig.mColMaxBSize) { skipResizeBSizeShrink = true; } break; case WritingMode::eBlockLR: if (child->GetScrollableOverflowRect().XMost() <= aConfig.mColMaxBSize) { skipResizeBSizeShrink = true; } break; case WritingMode::eBlockRL: // XXX not sure how to handle this, so for now just don't attempt // the optimization break; default: NS_NOTREACHED("unknown block direction"); break; } } nscoord childContentBEnd = 0; if (!reflowNext && (skipIncremental || skipResizeBSizeShrink)) { // This child does not need to be reflowed, but we may need to move it MoveChildTo(child, childOrigin, wm, containerSize); // If this is the last frame then make sure we get the right status nsIFrame* kidNext = child->GetNextSibling(); if (kidNext) { aStatus = (kidNext->GetStateBits() & NS_FRAME_IS_OVERFLOW_CONTAINER) ? NS_FRAME_OVERFLOW_INCOMPLETE : NS_FRAME_NOT_COMPLETE; } else { aStatus = mLastFrameStatus; } childContentBEnd = nsLayoutUtils::CalculateContentBEnd(wm, child); #ifdef DEBUG_roc printf("*** Skipping child #%d %p (incremental %d, resize block-size shrink %d): status = %d\n", columnCount, (void*)child, skipIncremental, skipResizeBSizeShrink, aStatus); #endif } else { LogicalSize availSize(wm, aConfig.mColISize, aConfig.mColMaxBSize); if (aUnboundedLastColumn && columnCount == aConfig.mBalanceColCount - 1) { availSize.BSize(wm) = GetAvailableContentBSize(aReflowInput); } LogicalSize computedSize = aReflowInput.ComputedSize(wm); if (reflowNext) child->AddStateBits(NS_FRAME_IS_DIRTY); LogicalSize kidCBSize(wm, availSize.ISize(wm), computedSize.BSize(wm)); ReflowInput kidReflowInput(PresContext(), aReflowInput, child, availSize, &kidCBSize); kidReflowInput.mFlags.mIsTopOfPage = true; kidReflowInput.mFlags.mTableIsSplittable = false; kidReflowInput.mFlags.mIsColumnBalancing = aConfig.mBalanceColCount < INT32_MAX; // We need to reflow any float placeholders, even if our column height // hasn't changed. kidReflowInput.mFlags.mMustReflowPlaceholders = !colBSizeChanged; #ifdef DEBUG_roc printf("*** Reflowing child #%d %p: availHeight=%d\n", columnCount, (void*)child,availSize.BSize(wm)); #endif // Note if the column's next in flow is not being changed by this incremental reflow. // This may allow the current column to avoid trying to pull lines from the next column. if (child->GetNextSibling() && !(GetStateBits() & NS_FRAME_IS_DIRTY) && !(child->GetNextSibling()->GetStateBits() & NS_FRAME_IS_DIRTY)) { kidReflowInput.mFlags.mNextInFlowUntouched = true; } ReflowOutput kidDesiredSize(wm, aDesiredSize.mFlags); // XXX it would be cool to consult the float manager for the // previous block to figure out the region of floats from the // previous column that extend into this column, and subtract // that region from the new float manager. So you could stick a // really big float in the first column and text in following // columns would flow around it. // Reflow the frame LogicalPoint origin(wm, childOrigin.I(wm) + kidReflowInput.ComputedLogicalMargin().IStart(wm), childOrigin.B(wm) + kidReflowInput.ComputedLogicalMargin().BStart(wm)); ReflowChild(child, PresContext(), kidDesiredSize, kidReflowInput, wm, origin, containerSize, 0, aStatus); reflowNext = (aStatus & NS_FRAME_REFLOW_NEXTINFLOW) != 0; #ifdef DEBUG_roc printf("*** Reflowed child #%d %p: status = %d, desiredSize=%d,%d CarriedOutBEndMargin=%d\n", columnCount, (void*)child, aStatus, kidDesiredSize.Width(), kidDesiredSize.Height(), kidDesiredSize.mCarriedOutBEndMargin.get()); #endif NS_FRAME_TRACE_REFLOW_OUT("Column::Reflow", aStatus); *aCarriedOutBEndMargin = kidDesiredSize.mCarriedOutBEndMargin; FinishReflowChild(child, PresContext(), kidDesiredSize, &kidReflowInput, wm, childOrigin, containerSize, 0); childContentBEnd = nsLayoutUtils::CalculateContentBEnd(wm, child); if (childContentBEnd > aConfig.mColMaxBSize) { allFit = false; } if (childContentBEnd > availSize.BSize(wm)) { aColData.mMaxOverflowingBSize = std::max(childContentBEnd, aColData.mMaxOverflowingBSize); } } contentRect.UnionRect(contentRect, child->GetRect()); ConsiderChildOverflow(overflowRects, child); contentBEnd = std::max(contentBEnd, childContentBEnd); aColData.mLastBSize = childContentBEnd; aColData.mSumBSize += childContentBEnd; // Build a continuation column if necessary nsIFrame* kidNextInFlow = child->GetNextInFlow(); if (NS_FRAME_IS_FULLY_COMPLETE(aStatus) && !NS_FRAME_IS_TRUNCATED(aStatus)) { NS_ASSERTION(!kidNextInFlow, "next in flow should have been deleted"); child = nullptr; break; } else { ++columnCount; // Make sure that the column has a next-in-flow. If not, we must // create one to hold the overflowing stuff, even if we're just // going to put it on our overflow list and let *our* // next in flow handle it. if (!kidNextInFlow) { NS_ASSERTION(aStatus & NS_FRAME_REFLOW_NEXTINFLOW, "We have to create a continuation, but the block doesn't want us to reflow it?"); // We need to create a continuing column kidNextInFlow = CreateNextInFlow(child); } // Make sure we reflow a next-in-flow when it switches between being // normal or overflow container if (NS_FRAME_OVERFLOW_IS_INCOMPLETE(aStatus)) { if (!(kidNextInFlow->GetStateBits() & NS_FRAME_IS_OVERFLOW_CONTAINER)) { aStatus |= NS_FRAME_REFLOW_NEXTINFLOW; reflowNext = true; kidNextInFlow->AddStateBits(NS_FRAME_IS_OVERFLOW_CONTAINER); } } else if (kidNextInFlow->GetStateBits() & NS_FRAME_IS_OVERFLOW_CONTAINER) { aStatus |= NS_FRAME_REFLOW_NEXTINFLOW; reflowNext = true; kidNextInFlow->RemoveStateBits(NS_FRAME_IS_OVERFLOW_CONTAINER); } if ((contentBEnd > aReflowInput.ComputedMaxBSize() || contentBEnd > aReflowInput.ComputedBSize()) && aConfig.mBalanceColCount < INT32_MAX) { // We overflowed vertically, but have not exceeded the number of // columns. We're going to go into overflow columns now, so balancing // no longer applies. aColData.mHasExcessBSize = true; } if (columnCount >= aConfig.mBalanceColCount) { // No more columns allowed here. Stop. aStatus |= NS_FRAME_REFLOW_NEXTINFLOW; kidNextInFlow->AddStateBits(NS_FRAME_IS_DIRTY); // Move any of our leftover columns to our overflow list. Our // next-in-flow will eventually pick them up. const nsFrameList& continuationColumns = mFrames.RemoveFramesAfter(child); if (continuationColumns.NotEmpty()) { SetOverflowFrames(continuationColumns); } child = nullptr; break; } } if (PresContext()->HasPendingInterrupt()) { // Stop the loop now while |child| still points to the frame that bailed // out. We could keep going here and condition a bunch of the code in // this loop on whether there's an interrupt, or even just keep going and // trying to reflow the blocks (even though we know they'll interrupt // right after their first line), but stopping now is conceptually the // simplest (and probably fastest) thing. break; } // Advance to the next column child = child->GetNextSibling(); if (child) { childOrigin.I(wm) += aConfig.mColISize + aConfig.mColGap; #ifdef DEBUG_roc printf("*** NEXT CHILD ORIGIN.icoord = %d\n", childOrigin.I(wm)); #endif } } if (PresContext()->CheckForInterrupt(this) && (GetStateBits() & NS_FRAME_IS_DIRTY)) { // Mark all our kids starting with |child| dirty // Note that this is a CheckForInterrupt call, not a HasPendingInterrupt, // because we might have interrupted while reflowing |child|, and since // we're about to add a dirty bit to |child| we need to make sure that // |this| is scheduled to have dirty bits marked on it and its ancestors. // Otherwise, when we go to mark dirty bits on |child|'s ancestors we'll // bail out immediately, since it'll already have a dirty bit. for (; child; child = child->GetNextSibling()) { child->AddStateBits(NS_FRAME_IS_DIRTY); } } aColData.mMaxBSize = contentBEnd; LogicalSize contentSize = LogicalSize(wm, contentRect.Size()); contentSize.BSize(wm) = std::max(contentSize.BSize(wm), contentBEnd); mLastFrameStatus = aStatus; // Apply computed and min/max values if (aConfig.mComputedBSize != NS_INTRINSICSIZE) { if (aReflowInput.AvailableBSize() != NS_INTRINSICSIZE) { contentSize.BSize(wm) = std::min(contentSize.BSize(wm), aConfig.mComputedBSize); } else { contentSize.BSize(wm) = aConfig.mComputedBSize; } } else { // We add the "consumed" block-size back in so that we're applying // constraints to the correct bSize value, then subtract it again // after we've finished with the min/max calculation. This prevents us from // having a last continuation that is smaller than the min bSize. but which // has prev-in-flows, trigger a larger bSize than actually required. contentSize.BSize(wm) = aReflowInput.ApplyMinMaxBSize(contentSize.BSize(wm), aConfig.mConsumedBSize); } if (aReflowInput.ComputedISize() != NS_INTRINSICSIZE) { contentSize.ISize(wm) = aReflowInput.ComputedISize(); } else { contentSize.ISize(wm) = aReflowInput.ApplyMinMaxISize(contentSize.ISize(wm)); } contentSize.ISize(wm) += borderPadding.IStartEnd(wm); contentSize.BSize(wm) += borderPadding.BStartEnd(wm); aDesiredSize.SetSize(wm, contentSize); aDesiredSize.mOverflowAreas = overflowRects; aDesiredSize.UnionOverflowAreasWithDesiredBounds(); // In vertical-rl mode, make a second pass if necessary to reposition the // columns with the correct container width. (In other writing modes, // correct containerSize was not required for column positioning so we don't // need this fixup.) if (wm.IsVerticalRL() && containerSize.width != contentSize.Width(wm)) { const nsSize finalContainerSize = aDesiredSize.PhysicalSize(); for (nsIFrame* child : mFrames) { // Get the logical position as set previously using a provisional or // dummy containerSize, and reset with the correct container size. child->SetPosition(wm, child->GetLogicalPosition(wm, containerSize), finalContainerSize); } } #ifdef DEBUG_roc printf("*** DONE PASS feasible=%d\n", allFit && NS_FRAME_IS_FULLY_COMPLETE(aStatus) && !NS_FRAME_IS_TRUNCATED(aStatus)); #endif return allFit && NS_FRAME_IS_FULLY_COMPLETE(aStatus) && !NS_FRAME_IS_TRUNCATED(aStatus); }