forked from mirrors/gecko-dev
894fd5d4c3
Factor a MiddleCroppingBlockFrame that does the double reflow shenanigans. That should both be faster and easier to reason about. The only thing we need to be careful about is to use the current inline coord from the line layout if present to compute the real available isize. Differential Revision: https://phabricator.services.mozilla.com/D173668
63 lines
2.1 KiB
C++
63 lines
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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