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Diffstat (limited to '')
-rw-r--r-- | layout/xul/nsTextBoxFrame.h | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/layout/xul/nsTextBoxFrame.h b/layout/xul/nsTextBoxFrame.h new file mode 100644 index 0000000000..64d714914b --- /dev/null +++ b/layout/xul/nsTextBoxFrame.h @@ -0,0 +1,125 @@ +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim: set ts=8 sts=2 et sw=2 tw=80: */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ +#ifndef nsTextBoxFrame_h___ +#define nsTextBoxFrame_h___ + +#include "mozilla/Attributes.h" +#include "nsLeafBoxFrame.h" + +class nsAccessKeyInfo; +class nsAsyncAccesskeyUpdate; +class nsFontMetrics; + +namespace mozilla { +class PresShell; +} // namespace mozilla + +class nsTextBoxFrame final : public nsLeafBoxFrame { + public: + NS_DECL_QUERYFRAME + NS_DECL_FRAMEARENA_HELPERS(nsTextBoxFrame) + + virtual nsSize GetXULPrefSize(nsBoxLayoutState& aBoxLayoutState) override; + virtual nsSize GetXULMinSize(nsBoxLayoutState& aBoxLayoutState) override; + virtual nscoord GetXULBoxAscent(nsBoxLayoutState& aBoxLayoutState) override; + NS_IMETHOD DoXULLayout(nsBoxLayoutState& aBoxLayoutState) override; + virtual void MarkIntrinsicISizesDirty() override; + + enum CroppingStyle { CropNone, CropLeft, CropRight, CropCenter, CropAuto }; + + friend nsIFrame* NS_NewTextBoxFrame(mozilla::PresShell* aPresShell, + ComputedStyle* aStyle); + + virtual void Init(nsIContent* aContent, nsContainerFrame* aParent, + nsIFrame* asPrevInFlow) override; + + virtual void DestroyFrom(nsIFrame* aDestructRoot, + PostDestroyData& aPostDestroyData) override; + + virtual nsresult AttributeChanged(int32_t aNameSpaceID, nsAtom* aAttribute, + int32_t aModType) override; + +#ifdef DEBUG_FRAME_DUMP + virtual nsresult GetFrameName(nsAString& aResult) const override; +#endif + + void UpdateAttributes(nsAtom* aAttribute, bool& aResize, bool& aRedraw); + + virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder, + const nsDisplayListSet& aLists) override; + + virtual ~nsTextBoxFrame(); + + void PaintTitle(gfxContext& aRenderingContext, const nsRect& aDirtyRect, + nsPoint aPt, const nscolor* aOverrideColor); + + nsRect GetComponentAlphaBounds() const; + + virtual bool XULComputesOwnOverflowArea() override; + + void GetCroppedTitle(nsString& aTitle) const { aTitle = mCroppedTitle; } + + virtual void DidSetComputedStyle(ComputedStyle* aOldComputedStyle) override; + + protected: + friend class nsAsyncAccesskeyUpdate; + friend class nsDisplayXULTextBox; + // Should be called only by nsAsyncAccesskeyUpdate. + // Returns true if accesskey was updated. + bool UpdateAccesskey(WeakFrame& aWeakThis); + void UpdateAccessTitle(); + void UpdateAccessIndex(); + + // Recompute our title, ignoring the access key but taking into + // account text-transform. + void RecomputeTitle(); + + // REVIEW: SORRY! Couldn't resist devirtualizing these + void LayoutTitle(nsPresContext* aPresContext, gfxContext& aRenderingContext, + const nsRect& aRect); + + void CalculateUnderline(DrawTarget* aDrawTarget, nsFontMetrics& aFontMetrics); + + void CalcTextSize(nsBoxLayoutState& aBoxLayoutState); + + void CalcDrawRect(gfxContext& aRenderingContext); + + explicit nsTextBoxFrame(ComputedStyle* aStyle, nsPresContext* aPresContext); + + nscoord CalculateTitleForWidth(gfxContext& aRenderingContext, nscoord aWidth); + + void GetTextSize(gfxContext& aRenderingContext, const nsString& aString, + nsSize& aSize, nscoord& aAscent); + + nsresult RegUnregAccessKey(bool aDoReg); + + private: + bool AlwaysAppendAccessKey(); + bool InsertSeparatorBeforeAccessKey(); + + void DrawText(gfxContext& aRenderingContext, const nsRect& aDirtyRect, + const nsRect& aTextRect, const nscolor* aOverrideColor); + + nsString mTitle; + nsString mCroppedTitle; + nsString mAccessKey; + nsSize mTextSize; + nsRect mTextDrawRect; + nsAccessKeyInfo* mAccessKeyInfo; + + CroppingStyle mCropType; + nscoord mAscent; + bool mNeedsRecalc; + bool mNeedsReflowCallback; + + static bool gAlwaysAppendAccessKey; + static bool gAccessKeyPrefInitialized; + static bool gInsertSeparatorBeforeAccessKey; + static bool gInsertSeparatorPrefInitialized; + +}; // class nsTextBoxFrame + +#endif /* nsTextBoxFrame_h___ */ |