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279 lines
8.0 KiB
279 lines
8.0 KiB
/****************************************************************************
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**
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the QtGui module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial Usage
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** Licensees holding valid Qt Commercial licenses may use this file in
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** accordance with the Qt Commercial License Agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Nokia.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3.0 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU General Public License version 3.0 requirements will be
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** met: http://www.gnu.org/copyleft/gpl.html.
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**
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** If you have questions regarding the use of this file, please contact
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** Nokia at qt-info@nokia.com.
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef QFONT_P_H
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#define QFONT_P_H
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//
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// W A R N I N G
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// -------------
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//
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// This file is not part of the Qt API. It exists for the convenience
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// of internal files. This header file may change from version to version
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// without notice, or even be removed.
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//
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// We mean it.
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//
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#include "QtGui/qfont.h"
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#include "QtCore/qmap.h"
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#include "QtCore/qobject.h"
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#include <private/qt4_qunicodetables_p.h>
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#include <QtGui/qfontdatabase.h>
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#include "private/qt4_qfixed_p.h"
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QT_BEGIN_NAMESPACE
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// forwards
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class QFontCache;
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class QFontEngine;
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struct QFontDef
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{
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inline QFontDef()
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: pointSize(-1.0), pixelSize(-1),
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styleStrategy(QFont::PreferDefault), tqstyleHint(QFont::AnyStyle),
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weight(50), fixedPitch(false), style(QFont::StyleNormal), stretch(100),
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ignorePitch(true)
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#ifdef Q_WS_MAC
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,fixedPitchComputed(false)
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#endif
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{
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}
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QString family;
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#ifdef Q_WS_X11
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QString addStyle;
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#endif // Q_WS_X11
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qreal pointSize;
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qreal pixelSize;
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uint styleStrategy : 16;
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uint tqstyleHint : 8;
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uint weight : 7; // 0-99
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uint fixedPitch : 1;
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uint style : 2;
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uint stretch : 12; // 0-400
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uint ignorePitch : 1;
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uint fixedPitchComputed : 1; // for Mac OS X only
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int reserved : 16; // for future extensions
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bool exactMatch(const QFontDef &other) const;
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bool operator==(const QFontDef &other) const
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{
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return pixelSize == other.pixelSize
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&& weight == other.weight
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&& style == other.style
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&& stretch == other.stretch
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&& tqstyleHint == other.tqstyleHint
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&& styleStrategy == other.styleStrategy
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&& ignorePitch == other.ignorePitch && fixedPitch == other.fixedPitch
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&& family == other.family
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#ifdef Q_WS_X11
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&& addStyle == other.addStyle
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#endif
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;
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}
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inline bool operator<(const QFontDef &other) const
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{
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if (pixelSize != other.pixelSize) return pixelSize < other.pixelSize;
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if (weight != other.weight) return weight < other.weight;
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if (style != other.style) return style < other.style;
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if (stretch != other.stretch) return stretch < other.stretch;
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if (tqstyleHint != other.tqstyleHint) return tqstyleHint < other.tqstyleHint;
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if (styleStrategy != other.styleStrategy) return styleStrategy < other.styleStrategy;
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if (family != other.family) return family < other.family;
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#ifdef Q_WS_X11
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if (addStyle != other.addStyle) return addStyle < other.addStyle;
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#endif // Q_WS_X11
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if (ignorePitch != other.ignorePitch) return ignorePitch < other.ignorePitch;
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if (fixedPitch != other.fixedPitch) return fixedPitch < other.fixedPitch;
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return false;
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}
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};
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class QFontEngineData
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{
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public:
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QFontEngineData();
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~QFontEngineData();
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QAtomicInt ref;
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QFontCache *fontCache;
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#if !defined(Q_WS_MAC)
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QFontEngine *engines[QUnicodeTables::ScriptCount];
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#else
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QFontEngine *engine;
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#endif
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};
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class Q_GUI_EXPORT QFontPrivate
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{
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public:
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#ifdef Q_WS_X11
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static int defaultEncodingID;
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#endif // Q_WS_X11
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QFontPrivate();
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QFontPrivate(const QFontPrivate &other);
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~QFontPrivate();
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QFontEngine *engineForScript(int script) const;
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void alterCharForCapitalization(QChar &c) const;
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QAtomicInt ref;
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QFontDef request;
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mutable QFontEngineData *engineData;
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int dpi;
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int screen;
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#ifdef Q_WS_WIN
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HDC hdc;
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#endif
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uint rawMode : 1;
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uint underline : 1;
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uint overline : 1;
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uint strikeOut : 1;
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uint kerning : 1;
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uint capital : 3;
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bool letterSpacingIsAbsolute : 1;
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QFixed letterSpacing;
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QFixed wordSpacing;
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mutable QFontPrivate *scFont;
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QFont smallCapsFont() const { return QFont(smallCapsFontPrivate()); }
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QFontPrivate *smallCapsFontPrivate() const;
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void resolve(uint mask, const QFontPrivate *other);
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private:
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QFontPrivate &operator=(const QFontPrivate &) { return *this; }
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};
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class QFontCache : public TQT_BASE_OBJECT_NAME
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{
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Q_OBJECT
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public:
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// note: these static functions work on a per-thread basis
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static QFontCache *instance();
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static void cleanup();
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QFontCache();
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~QFontCache();
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void clear();
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#if defined(Q_WS_QWS) && !defined(QT_NO_QWS_QPF2)
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void removeEngineForFont(const QByteArray &fontName);
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#endif
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// universal key structure. QFontEngineDatas and QFontEngines are cached using
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// the same keys
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struct Key {
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Key() : script(0), screen(0) { }
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Key(const QFontDef &d, int c, int s = 0)
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: def(d), script(c), screen(s) { }
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QFontDef def;
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int script;
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int screen;
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inline bool operator<(const Key &other) const
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{
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if (script != other.script) return script < other.script;
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if (screen != other.screen) return screen < other.screen;
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return def < other.def;
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}
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inline bool operator==(const Key &other) const
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{ return def == other.def && script == other.script && screen == other.screen; }
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};
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// QFontEngineData cache
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typedef QMap<Key,QFontEngineData*> EngineDataCache;
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EngineDataCache engineDataCache;
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QFontEngineData *findEngineData(const Key &key) const;
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void insertEngineData(const Key &key, QFontEngineData *engineData);
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// QFontEngine cache
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struct Engine {
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Engine() : data(0), timestamp(0), hits(0) { }
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Engine(QFontEngine *d) : data(d), timestamp(0), hits(0) { }
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QFontEngine *data;
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uint timestamp;
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uint hits;
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};
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typedef QMap<Key,Engine> EngineCache;
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EngineCache engineCache;
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QFontEngine *findEngine(const Key &key);
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void insertEngine(const Key &key, QFontEngine *engine);
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#if defined(Q_WS_WIN) || defined(Q_WS_QWS)
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void cleanupPrinterFonts();
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#endif
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private:
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void increaseCost(uint cost);
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void decreaseCost(uint cost);
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void timerEvent(QTimerEvent *event);
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static const uint min_cost;
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uint total_cost, max_cost;
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uint current_timestamp;
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bool fast;
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int timer_id;
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};
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QT_END_NAMESPACE
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#endif // QFONT_P_H
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