зеркало из https://github.com/mozilla/gecko-dev.git
64 строки
2.1 KiB
C++
64 строки
2.1 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 mozilla_MiddleCroppingBlockFrame_h
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#define mozilla_MiddleCroppingBlockFrame_h
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#include "nsBlockFrame.h"
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#include "nsIAnonymousContentCreator.h"
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#include "nsQueryFrame.h"
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namespace mozilla {
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// A block frame that implements a simplistic version of middle-cropping. Note
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// that this is not fully l10n aware or complex-writing-system-friendly, so it's
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// generally mostly useful for filenames / urls / etc.
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class MiddleCroppingBlockFrame : public nsBlockFrame,
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public nsIAnonymousContentCreator {
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public:
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virtual void GetUncroppedValue(nsAString&) = 0;
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void UpdateDisplayedValueToUncroppedValue(bool aNotify);
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NS_DECL_QUERYFRAME_TARGET(MiddleCroppingBlockFrame)
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NS_DECL_QUERYFRAME
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NS_DECL_ABSTRACT_FRAME(MiddleCroppingBlockFrame)
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protected:
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MiddleCroppingBlockFrame(ComputedStyle*, nsPresContext*, ClassID);
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~MiddleCroppingBlockFrame();
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void Reflow(nsPresContext*, ReflowOutput&, const ReflowInput&,
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nsReflowStatus&) override;
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nscoord GetMinISize(gfxContext*) override;
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nscoord GetPrefISize(gfxContext*) override;
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/**
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* Crop aText to fit inside aWidth using the styles of aFrame.
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* @return true if aText was modified
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*/
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bool CropTextToWidth(gfxContext& aRenderingContext, nscoord aWidth,
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nsString& aText) const;
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nsresult CreateAnonymousContent(nsTArray<ContentInfo>&) override;
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void AppendAnonymousContentTo(nsTArray<nsIContent*>&,
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uint32_t aFilter) override;
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/**
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* Updates the displayed value by using aValue.
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*/
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void UpdateDisplayedValue(const nsAString& aValue, bool aNotify);
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void DestroyFrom(nsIFrame* aDestructRoot,
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PostDestroyData& aPostDestroyData) override;
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RefPtr<dom::Text> mTextNode;
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};
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} // namespace mozilla
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#endif
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