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Diffstat (limited to 'src/gui/painting/qtextureglyphcache_p.h')
-rw-r--r-- | src/gui/painting/qtextureglyphcache_p.h | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/src/gui/painting/qtextureglyphcache_p.h b/src/gui/painting/qtextureglyphcache_p.h new file mode 100644 index 0000000..7f2c478 --- /dev/null +++ b/src/gui/painting/qtextureglyphcache_p.h @@ -0,0 +1,141 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (qt-info@nokia.com) +** +** This file is part of the QtGui module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain +** additional rights. These rights are described in the Nokia Qt LGPL +** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at qt-sales@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QTEXTUREGLYPHCACHE_P_H +#define QTEXTUREGLYPHCACHE_P_H + +// +// W A R N I N G +// ------------- +// +// This file is not part of the Qt API. It exists for the convenience +// of other Qt classes. This header file may change from version to +// version without notice, or even be removed. +// +// We mean it. +// + +#include <qhash.h> +#include <qimage.h> +#include <qobject.h> +#include <qtransform.h> + +#include <private/qfontengineglyphcache_p.h> + +struct glyph_metrics_t; +typedef unsigned int glyph_t; + + +QT_BEGIN_NAMESPACE + +class QTextItemInt; + +class Q_GUI_EXPORT QTextureGlyphCache : public QFontEngineGlyphCache +{ +public: + QTextureGlyphCache(QFontEngineGlyphCache::Type type, const QTransform &matrix) + : QFontEngineGlyphCache(matrix), m_w(0), m_h(0), m_cx(0), m_cy(0), m_type(type) { } + + virtual ~QTextureGlyphCache() { } + + struct Coord { + int x; + int y; + int w; + int h; + + int baseLineX; + int baseLineY; + }; + + void populate(const QTextItemInt &ti, + const QVarLengthArray<glyph_t> &glyphs, + const QVarLengthArray<QFixedPoint> &positions); + + virtual void createTextureData(int width, int height) = 0; + virtual void resizeTextureData(int width, int height) = 0; + virtual int glyphMargin() const { return 0; } + + QFontEngineGlyphCache::Type cacheType() const { return m_type; } + + virtual void fillTexture(const Coord &coord, glyph_t glyph) = 0; + + inline void createCache(int width, int height) { + m_w = width; + m_h = height; + createTextureData(width, height); + } + + inline bool isNull() const { return m_w <= 0 || m_h <= 0; } + + QHash<glyph_t, Coord> coords; + +protected: + const QTextItemInt *m_current_textitem; + + int m_w; // image width + int m_h; // image height + int m_cx; // current x + int m_cy; // current y + QFontEngineGlyphCache::Type m_type; + +}; + + +class Q_GUI_EXPORT QImageTextureGlyphCache : public QTextureGlyphCache +{ +public: + QImageTextureGlyphCache(QFontEngineGlyphCache::Type type, const QTransform &matrix) + : QTextureGlyphCache(type, matrix) { } + virtual int glyphMargin() const; + virtual void createTextureData(int width, int height); + virtual void resizeTextureData(int width, int height); + virtual void fillTexture(const Coord &c, glyph_t glyph); + + inline const QImage &image() const { return m_image; } + +private: + QImage m_image; +}; + +QT_END_NAMESPACE + +#endif |