diff options
Diffstat (limited to 'src/declarative/scenegraph/qsgdistancefieldglyphcache_p.h')
| -rw-r--r-- | src/declarative/scenegraph/qsgdistancefieldglyphcache_p.h | 210 |
1 files changed, 0 insertions, 210 deletions
diff --git a/src/declarative/scenegraph/qsgdistancefieldglyphcache_p.h b/src/declarative/scenegraph/qsgdistancefieldglyphcache_p.h deleted file mode 100644 index aea7c5952f..0000000000 --- a/src/declarative/scenegraph/qsgdistancefieldglyphcache_p.h +++ /dev/null @@ -1,210 +0,0 @@ -/**************************************************************************** -** -** 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 DISTANCEFIELDGLYPHCACHE_H -#define DISTANCEFIELDGLYPHCACHE_H - -#include <qopengl.h> -#include <qrawfont.h> -#include <private/qopenglcontext_p.h> -#include <QtGui/qopenglfunctions.h> -#include <private/qfont_p.h> -#include <private/qfontengine_p.h> -#include <QtGui/private/qdatabuffer_p.h> -#include <private/qsgadaptationlayer_p.h> - -QT_BEGIN_NAMESPACE - -typedef float (*ThresholdFunc)(float glyphScale); -typedef float (*AntialiasingSpreadFunc)(float glyphScale); - -class QOpenGLShaderProgram; -class QSGDistanceFieldGlyphCache; - -class Q_DECLARATIVE_EXPORT QSGDistanceFieldGlyphCacheManager -{ -public: - QSGDistanceFieldGlyphCacheManager(QOpenGLContext *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; } - - QOpenGLShaderProgram *blitProgram() { return m_blitProgram; } - const GLfloat *blitVertexArray() const { return &m_vertexCoordinateArray[0]; } - const GLfloat *blitTextureArray() const { return &m_textureCoordinateArray[0]; } - - int maxTextureSize() const; - -private: - QHash<QFontEngine *, QSGDistanceFieldGlyphCache *> m_caches; - - QOpenGLContext *ctx; - - QSGGlyphNode::AntialiasingMode m_defaultAntialiasingMode; - ThresholdFunc m_threshold_func; - AntialiasingSpreadFunc m_antialiasingSpread_func; - - mutable int m_maxTextureSize; - - QOpenGLShaderProgram *m_blitProgram; - GLfloat m_vertexCoordinateArray[8]; - GLfloat m_textureCoordinateArray[8]; -}; - -class Q_DECLARATIVE_EXPORT QSGDistanceFieldGlyphCache -{ -public: - ~QSGDistanceFieldGlyphCache(); - - struct Metrics { - qreal width; - qreal height; - qreal baselineX; - qreal baselineY; - - bool isNull() const { return width == 0 || height == 0; } - }; - Metrics glyphMetrics(glyph_t glyph); - - struct TexCoord { - qreal x; - qreal y; - qreal width; - qreal height; - qreal xMargin; - qreal yMargin; - - TexCoord() : x(0), y(0), width(0), height(0), xMargin(0), yMargin(0) { } - - bool isNull() const { return width == 0 || height == 0; } - }; - TexCoord glyphTexCoord(glyph_t glyph); - - const QSGDistanceFieldGlyphCacheManager *manager() const { return m_manager; } - - GLuint texture(); - QSize textureSize() const; - qreal fontScale() const; - int distanceFieldRadius() const; - QImage renderDistanceFieldGlyph(glyph_t glyph) const; - - int glyphCount() const; - - void populate(int count, const glyph_t *glyphs); - void derefGlyphs(int count, const glyph_t *glyphs); - void updateCache(); - - bool cacheIsFull() const { return m_textureData->currY >= m_manager->maxTextureSize(); } - - bool useWorkaroundBrokenFBOReadback() const; - -private: - QSGDistanceFieldGlyphCache(QSGDistanceFieldGlyphCacheManager *man, QOpenGLContext *c, const QRawFont &font); - - void createTexture(int width, int height); - void resizeTexture(int width, int height); - - QSGDistanceFieldGlyphCacheManager *m_manager; - - QOpenGLContext *ctx; - - QRawFont m_font; - QRawFont m_referenceFont; - - int m_glyphCount; - QHash<glyph_t, Metrics> m_metrics; - - struct DistanceFieldTextureData : public QOpenGLSharedResource { - GLuint texture; - GLuint fbo; - QSize size; - QHash<glyph_t, TexCoord> texCoords; - QDataBuffer<glyph_t> pendingGlyphs; - QHash<glyph_t, quint32> glyphRefCount; - QSet<glyph_t> unusedGlyphs; - int currX; - int currY; - QImage image; - bool doubleGlyphResolution; - - DistanceFieldTextureData(QOpenGLContext *ctx) - : QOpenGLSharedResource(ctx->shareGroup()) - , texture(0) - , fbo(0) - , pendingGlyphs(64) - , currX(0) - , currY(0) - , doubleGlyphResolution(false) - {} - - void invalidateResource() - { - texture = 0; - fbo = 0; - size = QSize(); - } - - void freeResource(QOpenGLContext *ctx) - { - glDeleteTextures(1, &texture); - ctx->functions()->glDeleteFramebuffers(1, &fbo); - } - }; - - DistanceFieldTextureData *textureData(); - DistanceFieldTextureData *m_textureData; - static QHash<QString, QOpenGLMultiGroupSharedResource> m_textures_data; - - friend class QSGDistanceFieldGlyphCacheManager; -}; - -QT_END_NAMESPACE - -#endif // DISTANCEFIELDGLYPHCACHE_H |