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d4c7a65b4c
To account for spacing between bases or text boxes during reflow, the line layout which manages the bases updates its inline direction coordinate based on the preferred inline size for the corresponding text boxes. Next, the base is reflowed at the correct inline coordinate. Each paired text box is then also reflowed at the proper inline position determined by (1) the current position of its corresponding base and (2) its own preferred width. In computing intrinsic widths, accounting for spacing is less complicated. The minimum intrinsic width is the width of the widest ruby column, and the preferred intrinsic width is the sum of all the ruby column widths. Each ruby column width is the maximum width of its base box and text boxes. These individual widths are determined using GetPrefISize on the base and text boxes. Ruby base container frames store a list of pointers to the ruby text container frames in the segment they denote. This list of pointers is created in the ruby frame reflow method before calling the reflow method for the ruby base container. The list exists and is used only during reflow of the main ruby frame and is cleared before returning from reflow.
56 lines
2.1 KiB
C++
56 lines
2.1 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=2 et sw=2 tw=80: */
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/* This Source Code is subject to the terms of the Mozilla Public License
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* version 2.0 (the "License"). You can obtain a copy of the License at
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* http://mozilla.org/MPL/2.0/. */
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/* rendering object for CSS "display: ruby-text" */
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#ifndef nsRubyTextFrame_h___
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#define nsRubyTextFrame_h___
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#include "nsContainerFrame.h"
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/**
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* Factory function.
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* @return a newly allocated nsRubyTextFrame (infallible)
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*/
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nsContainerFrame* NS_NewRubyTextFrame(nsIPresShell* aPresShell,
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nsStyleContext* aContext);
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class nsRubyTextFrame MOZ_FINAL : public nsContainerFrame
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{
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public:
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NS_DECL_FRAMEARENA_HELPERS
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NS_DECL_QUERYFRAME_TARGET(nsRubyTextFrame)
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NS_DECL_QUERYFRAME
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// nsIFrame overrides
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virtual nsIAtom* GetType() const MOZ_OVERRIDE;
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virtual void Reflow(nsPresContext* aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aReflowState,
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nsReflowStatus& aStatus) MOZ_OVERRIDE;
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virtual bool IsFrameOfType(uint32_t aFlags) const MOZ_OVERRIDE;
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virtual void AddInlineMinISize(nsRenderingContext *aRenderingContext,
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InlineMinISizeData *aData) MOZ_OVERRIDE;
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virtual void AddInlinePrefISize(nsRenderingContext *aRenderingContext,
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InlinePrefISizeData *aData) MOZ_OVERRIDE;
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virtual nscoord GetMinISize(nsRenderingContext *aRenderingContext) MOZ_OVERRIDE;
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virtual nscoord GetPrefISize(nsRenderingContext *aRenderingContext) MOZ_OVERRIDE;
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virtual nscoord GetLogicalBaseline(mozilla::WritingMode aWritingMode)
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const MOZ_OVERRIDE;
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#ifdef DEBUG_FRAME_DUMP
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virtual nsresult GetFrameName(nsAString& aResult) const MOZ_OVERRIDE;
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#endif
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protected:
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friend nsContainerFrame* NS_NewRubyTextFrame(nsIPresShell* aPresShell,
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nsStyleContext* aContext);
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nsRubyTextFrame(nsStyleContext* aContext) : nsContainerFrame(aContext) {}
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nscoord mBaseline;
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};
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#endif /* nsRubyTextFrame_h___ */
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