gecko/layout/generic/nsTextRunTransformations.h

102 lines
4.0 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Novell code.
*
* The Initial Developer of the Original Code is Novell Corporation.
* Portions created by the Initial Developer are Copyright (C) 2006
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* robert@ocallahan.org
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
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* ***** END LICENSE BLOCK ***** */
#ifndef NSTEXTRUNTRANSFORMATIONS_H_
#define NSTEXTRUNTRANSFORMATIONS_H_
#include "gfxFont.h"
class nsTransformedTextRun;
class nsStyleContext;
class nsTransformingTextRunFactory {
public:
virtual ~nsTransformingTextRunFactory() {}
// Default 8-bit path just transforms to Unicode and takes that path
gfxTextRun* MakeTextRun(const PRUint8* aString, PRUint32 aLength,
gfxFontGroup::Parameters* aParams, nsStyleContext** aStyles);
gfxTextRun* MakeTextRun(const PRUnichar* aString, PRUint32 aLength,
gfxFontGroup::Parameters* aParams, nsStyleContext** aStyles);
virtual void RebuildTextRun(nsTransformedTextRun* aTextRun) = 0;
};
/**
* Builds textruns that render their text using a font-variant (i.e.,
* smallcaps).
*/
class nsFontVariantTextRunFactory : public nsTransformingTextRunFactory {
public:
nsFontVariantTextRunFactory(gfxFontGroup* aFontGroup)
: mFontGroup(aFontGroup) {}
virtual void RebuildTextRun(nsTransformedTextRun* aTextRun);
protected:
nsRefPtr<gfxFontGroup> mFontGroup;
};
/**
* Builds textruns that transform the text in some way (e.g., capitalize)
* and then render the text using some other textrun implementation.
*/
class nsCaseTransformTextRunFactory : public nsTransformingTextRunFactory {
public:
// We could add an optimization here so that when there is no inner
// factory, no title-case conversion, and no upper-casing of SZLIG, we override
// MakeTextRun (after making it virtual in the superclass) and have it
// just convert the string to uppercase or lowercase and create the textrun
// via the fontgroup.
nsCaseTransformTextRunFactory(gfxFontGroup* aFontGroup,
nsTransformingTextRunFactory* aInnerTransformingTextRunFactory,
PRBool aAllUppercase = PR_FALSE)
: mFontGroup(aFontGroup),
mInnerTransformingTextRunFactory(aInnerTransformingTextRunFactory),
mAllUppercase(aAllUppercase) {}
virtual void RebuildTextRun(nsTransformedTextRun* aTextRun);
protected:
nsRefPtr<gfxFontGroup> mFontGroup;
nsAutoPtr<nsTransformingTextRunFactory> mInnerTransformingTextRunFactory;
PRPackedBool mAllUppercase;
};
#endif /*NSTEXTRUNTRANSFORMATIONS_H_*/