summaryrefslogtreecommitdiffstats
path: root/src/gui/painting/qtextureglyphcache_p.h
diff options
context:
space:
mode:
Diffstat (limited to 'src/gui/painting/qtextureglyphcache_p.h')
-rw-r--r--src/gui/painting/qtextureglyphcache_p.h141
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