зеркало из https://github.com/mozilla/gecko-dev.git
129 строки
4.4 KiB
C++
129 строки
4.4 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef nsTextBoxFrame_h___
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#define nsTextBoxFrame_h___
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#include "mozilla/Attributes.h"
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#include "nsLeafBoxFrame.h"
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class nsAccessKeyInfo;
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class nsAsyncAccesskeyUpdate;
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class nsFontMetrics;
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namespace mozilla {
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class nsDisplayXULTextBox;
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class PresShell;
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} // namespace mozilla
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class nsTextBoxFrame final : public nsLeafBoxFrame {
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public:
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NS_DECL_QUERYFRAME
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NS_DECL_FRAMEARENA_HELPERS(nsTextBoxFrame)
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virtual nsSize GetXULPrefSize(nsBoxLayoutState& aBoxLayoutState) override;
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virtual nsSize GetXULMinSize(nsBoxLayoutState& aBoxLayoutState) override;
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virtual nscoord GetXULBoxAscent(nsBoxLayoutState& aBoxLayoutState) override;
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NS_IMETHOD DoXULLayout(nsBoxLayoutState& aBoxLayoutState) override;
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virtual void MarkIntrinsicISizesDirty() override;
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enum CroppingStyle { CropNone, CropLeft, CropRight, CropCenter, CropAuto };
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friend nsIFrame* NS_NewTextBoxFrame(mozilla::PresShell* aPresShell,
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ComputedStyle* aStyle);
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virtual void Init(nsIContent* aContent, nsContainerFrame* aParent,
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nsIFrame* asPrevInFlow) override;
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virtual nsresult AttributeChanged(int32_t aNameSpaceID, nsAtom* aAttribute,
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int32_t aModType) override;
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#ifdef DEBUG_FRAME_DUMP
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virtual nsresult GetFrameName(nsAString& aResult) const override;
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#endif
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void UpdateAttributes(nsAtom* aAttribute, bool& aResize, bool& aRedraw);
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virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder,
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const nsDisplayListSet& aLists) override;
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virtual ~nsTextBoxFrame();
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void PaintTitle(gfxContext& aRenderingContext, const nsRect& aDirtyRect,
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nsPoint aPt, const nscolor* aOverrideColor);
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nsRect GetComponentAlphaBounds() const;
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virtual bool XULComputesOwnOverflowArea() override;
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void GetCroppedTitle(nsString& aTitle) const { aTitle = mCroppedTitle; }
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virtual void DidSetComputedStyle(ComputedStyle* aOldComputedStyle) override;
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// Helper for GetCroppedTitle, factored out so that we can also use it from
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// nsTreeBodyFrame::AdjustForCellText.
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static void CropStringForWidth(nsAString& aText,
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gfxContext& aRenderingContext,
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nsFontMetrics& aFontMetrics, nscoord aWidth,
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CroppingStyle aCropType);
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static bool AlwaysAppendAccessKey();
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static bool InsertSeparatorBeforeAccessKey();
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protected:
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friend class nsAsyncAccesskeyUpdate;
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friend class mozilla::nsDisplayXULTextBox;
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// Should be called only by nsAsyncAccesskeyUpdate.
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// Returns true if accesskey was updated.
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bool UpdateAccesskey(WeakFrame& aWeakThis);
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void UpdateAccessTitle();
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void UpdateAccessIndex();
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// Recompute our title, ignoring the access key but taking into
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// account text-transform.
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void RecomputeTitle();
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// REVIEW: SORRY! Couldn't resist devirtualizing these
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void LayoutTitle(nsPresContext* aPresContext, gfxContext& aRenderingContext,
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const nsRect& aRect);
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void CalculateUnderline(DrawTarget* aDrawTarget, nsFontMetrics& aFontMetrics);
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void CalcTextSize(nsBoxLayoutState& aBoxLayoutState);
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void CalcDrawRect(gfxContext& aRenderingContext);
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explicit nsTextBoxFrame(ComputedStyle* aStyle, nsPresContext* aPresContext);
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nscoord CalculateTitleForWidth(gfxContext& aRenderingContext, nscoord aWidth);
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void GetTextSize(gfxContext& aRenderingContext, const nsString& aString,
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nsSize& aSize, nscoord& aAscent);
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private:
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void DrawText(gfxContext& aRenderingContext, const nsRect& aDirtyRect,
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const nsRect& aTextRect, const nscolor* aOverrideColor);
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nsString mTitle;
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nsString mCroppedTitle;
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nsString mAccessKey;
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nsSize mTextSize;
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nsRect mTextDrawRect;
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nsAccessKeyInfo* mAccessKeyInfo;
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CroppingStyle mCropType;
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nscoord mAscent;
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bool mNeedsRecalc;
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bool mNeedsReflowCallback;
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static bool gAlwaysAppendAccessKey;
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static bool gAccessKeyPrefInitialized;
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static bool gInsertSeparatorBeforeAccessKey;
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static bool gInsertSeparatorPrefInitialized;
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}; // class nsTextBoxFrame
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#endif /* nsTextBoxFrame_h___ */
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