зеркало из https://github.com/mozilla/pjs.git
167 строки
6.8 KiB
C++
167 строки
6.8 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Novell code.
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*
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* The Initial Developer of the Original Code is Novell Corporation.
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* Portions created by the Initial Developer are Copyright (C) 2006
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* robert@ocallahan.org
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef NSTEXTRUNTRANSFORMATIONS_H_
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#define NSTEXTRUNTRANSFORMATIONS_H_
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#include "gfxFont.h"
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class nsTransformedTextRun;
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class nsStyleContext;
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class nsTransformingTextRunFactory {
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public:
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virtual ~nsTransformingTextRunFactory() {}
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// Default 8-bit path just transforms to Unicode and takes that path
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nsTransformedTextRun* MakeTextRun(const PRUint8* aString, PRUint32 aLength,
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const gfxFontGroup::Parameters* aParams,
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gfxFontGroup* aFontGroup, PRUint32 aFlags,
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nsStyleContext** aStyles, bool aOwnsFactory = true);
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nsTransformedTextRun* MakeTextRun(const PRUnichar* aString, PRUint32 aLength,
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const gfxFontGroup::Parameters* aParams,
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gfxFontGroup* aFontGroup, PRUint32 aFlags,
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nsStyleContext** aStyles, bool aOwnsFactory = true);
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virtual void RebuildTextRun(nsTransformedTextRun* aTextRun, gfxContext* aRefContext) = 0;
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};
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/**
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* Builds textruns that render their text using a font-variant (i.e.,
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* smallcaps).
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*/
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class nsFontVariantTextRunFactory : public nsTransformingTextRunFactory {
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public:
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virtual void RebuildTextRun(nsTransformedTextRun* aTextRun, gfxContext* aRefContext);
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};
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/**
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* Builds textruns that transform the text in some way (e.g., capitalize)
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* and then render the text using some other textrun implementation.
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*/
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class nsCaseTransformTextRunFactory : public nsTransformingTextRunFactory {
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public:
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// We could add an optimization here so that when there is no inner
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// factory, no title-case conversion, and no upper-casing of SZLIG, we override
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// MakeTextRun (after making it virtual in the superclass) and have it
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// just convert the string to uppercase or lowercase and create the textrun
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// via the fontgroup.
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// Takes ownership of aInnerTransformTextRunFactory
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nsCaseTransformTextRunFactory(nsTransformingTextRunFactory* aInnerTransformingTextRunFactory,
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bool aAllUppercase = false)
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: mInnerTransformingTextRunFactory(aInnerTransformingTextRunFactory),
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mAllUppercase(aAllUppercase) {}
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virtual void RebuildTextRun(nsTransformedTextRun* aTextRun, gfxContext* aRefContext);
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protected:
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nsAutoPtr<nsTransformingTextRunFactory> mInnerTransformingTextRunFactory;
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bool mAllUppercase;
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};
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/**
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* So that we can reshape as necessary, we store enough information
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* to fully rebuild the textrun contents.
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*/
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class nsTransformedTextRun : public gfxTextRun {
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public:
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static nsTransformedTextRun *Create(const gfxTextRunFactory::Parameters* aParams,
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nsTransformingTextRunFactory* aFactory,
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gfxFontGroup* aFontGroup,
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const PRUnichar* aString, PRUint32 aLength,
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const PRUint32 aFlags, nsStyleContext** aStyles,
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bool aOwnsFactory);
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~nsTransformedTextRun() {
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if (mOwnsFactory) {
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delete mFactory;
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}
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}
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void SetCapitalization(PRUint32 aStart, PRUint32 aLength,
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bool* aCapitalization,
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gfxContext* aRefContext);
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virtual bool SetPotentialLineBreaks(PRUint32 aStart, PRUint32 aLength,
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PRUint8* aBreakBefore,
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gfxContext* aRefContext);
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/**
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* Called after SetCapitalization and SetPotentialLineBreaks
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* are done and before we request any data from the textrun. Also always
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* called after a Create.
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*/
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void FinishSettingProperties(gfxContext* aRefContext)
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{
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if (mNeedsRebuild) {
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mNeedsRebuild = false;
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mFactory->RebuildTextRun(this, aRefContext);
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}
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}
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// override the gfxTextRun impls to account for additional members here
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virtual NS_MUST_OVERRIDE size_t SizeOfExcludingThis(nsMallocSizeOfFun aMallocSizeOf);
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virtual NS_MUST_OVERRIDE size_t SizeOfIncludingThis(nsMallocSizeOfFun aMallocSizeOf);
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nsTransformingTextRunFactory *mFactory;
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nsTArray<nsRefPtr<nsStyleContext> > mStyles;
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nsTArray<bool> mCapitalize;
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nsString mString;
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bool mOwnsFactory;
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bool mNeedsRebuild;
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private:
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nsTransformedTextRun(const gfxTextRunFactory::Parameters* aParams,
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nsTransformingTextRunFactory* aFactory,
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gfxFontGroup* aFontGroup,
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const PRUnichar* aString, PRUint32 aLength,
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const PRUint32 aFlags, nsStyleContext** aStyles,
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bool aOwnsFactory)
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: gfxTextRun(aParams, aString, aLength, aFontGroup, aFlags),
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mFactory(aFactory), mString(aString, aLength),
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mOwnsFactory(aOwnsFactory), mNeedsRebuild(true)
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{
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mCharacterGlyphs = reinterpret_cast<CompressedGlyph*>(this + 1);
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PRUint32 i;
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for (i = 0; i < aLength; ++i) {
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mStyles.AppendElement(aStyles[i]);
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}
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}
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};
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#endif /*NSTEXTRUNTRANSFORMATIONS_H_*/
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