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Diffstat (limited to 'src/quick/scenegraph/util/qsgdistancefieldutil_p.h')
-rw-r--r-- | src/quick/scenegraph/util/qsgdistancefieldutil_p.h | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/src/quick/scenegraph/util/qsgdistancefieldutil_p.h b/src/quick/scenegraph/util/qsgdistancefieldutil_p.h new file mode 100644 index 0000000000..bc28a4d9e1 --- /dev/null +++ b/src/quick/scenegraph/util/qsgdistancefieldutil_p.h @@ -0,0 +1,111 @@ +/**************************************************************************** +** +** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the QtDeclarative module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** GNU Lesser General Public License Usage +** 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 1.1, 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. +** +** Other Usage +** Alternatively, this file may be used in accordance with the terms and +** conditions contained in a signed written agreement between you and Nokia. +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QSGDISTANCEFIELDUTIL_H +#define QSGDISTANCEFIELDUTIL_H + +#include <qrawfont.h> +#include <private/qfontengine_p.h> +#include <private/qsgadaptationlayer_p.h> + +QT_BEGIN_NAMESPACE + +#define QT_DISTANCEFIELD_DEFAULT_BASEFONTSIZE 54 +#define QT_DISTANCEFIELD_DEFAULT_TILESIZE 64 +#define QT_DISTANCEFIELD_DEFAULT_SCALE 16 +#define QT_DISTANCEFIELD_DEFAULT_RADIUS 80 +#define QT_DISTANCEFIELD_HIGHGLYPHCOUNT 2000 + +#define QT_DISTANCEFIELD_BASEFONTSIZE(NarrowOutlineFont) \ + (NarrowOutlineFont ? QT_DISTANCEFIELD_DEFAULT_BASEFONTSIZE * 2 : \ + QT_DISTANCEFIELD_DEFAULT_BASEFONTSIZE) +#define QT_DISTANCEFIELD_TILESIZE(NarrowOutlineFont) \ + (NarrowOutlineFont ? QT_DISTANCEFIELD_DEFAULT_TILESIZE * 2 : \ + QT_DISTANCEFIELD_DEFAULT_TILESIZE) +#define QT_DISTANCEFIELD_SCALE(NarrowOutlineFont) \ + (NarrowOutlineFont ? QT_DISTANCEFIELD_DEFAULT_SCALE / 2 : \ + QT_DISTANCEFIELD_DEFAULT_SCALE) +#define QT_DISTANCEFIELD_RADIUS(NarrowOutlineFont) \ + (NarrowOutlineFont ? QT_DISTANCEFIELD_DEFAULT_RADIUS / 2 : \ + QT_DISTANCEFIELD_DEFAULT_RADIUS) + + +typedef float (*ThresholdFunc)(float glyphScale); +typedef float (*AntialiasingSpreadFunc)(float glyphScale); + +bool qt_fontHasNarrowOutlines(const QRawFont &f); +QImage qt_renderDistanceFieldGlyph(const QRawFont &font, glyph_t glyph, bool doubleResolution); + + +class QOpenGLShaderProgram; +class QSGDistanceFieldGlyphCache; +class QSGContext; + +class Q_QUICK_EXPORT QSGDistanceFieldGlyphCacheManager +{ +public: + QSGDistanceFieldGlyphCacheManager(QSGContext *c); + ~QSGDistanceFieldGlyphCacheManager(); + + QSGDistanceFieldGlyphCache *cache(const QRawFont &font); + + QSGGlyphNode::AntialiasingMode defaultAntialiasingMode() const { return m_defaultAntialiasingMode; } + void setDefaultAntialiasingMode(QSGGlyphNode::AntialiasingMode mode) { m_defaultAntialiasingMode = mode; } + + ThresholdFunc thresholdFunc() const { return m_threshold_func; } + void setThresholdFunc(ThresholdFunc func) { m_threshold_func = func; } + + AntialiasingSpreadFunc antialiasingSpreadFunc() const { return m_antialiasingSpread_func; } + void setAntialiasingSpreadFunc(AntialiasingSpreadFunc func) { m_antialiasingSpread_func = func; } + +private: + QHash<QFontEngine *, QSGDistanceFieldGlyphCache *> m_caches; + + QSGContext *sgCtx; + + QSGGlyphNode::AntialiasingMode m_defaultAntialiasingMode; + ThresholdFunc m_threshold_func; + AntialiasingSpreadFunc m_antialiasingSpread_func; +}; + +QT_END_NAMESPACE + +#endif // QSGDISTANCEFIELDUTIL_H |