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Diffstat (limited to 'src/quick/scenegraph/qsgadaptationlayer_p.h')
| -rw-r--r-- | src/quick/scenegraph/qsgadaptationlayer_p.h | 255 |
1 files changed, 255 insertions, 0 deletions
diff --git a/src/quick/scenegraph/qsgadaptationlayer_p.h b/src/quick/scenegraph/qsgadaptationlayer_p.h new file mode 100644 index 0000000000..5912802a84 --- /dev/null +++ b/src/quick/scenegraph/qsgadaptationlayer_p.h @@ -0,0 +1,255 @@ +/**************************************************************************** +** +** 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 ADAPTATIONINTERFACES_H +#define ADAPTATIONINTERFACES_H + +#include <QtQuick/qsgnode.h> +#include <QtQuick/qsgtexture.h> +#include <QtCore/qobject.h> +#include <QtCore/qrect.h> +#include <QtGui/qbrush.h> +#include <QtGui/qcolor.h> +#include <QtCore/qsharedpointer.h> +#include <QtGui/qglyphrun.h> +#include <QtCore/qurl.h> +#include <private/qfontengine_p.h> +#include <QtGui/private/qdatabuffer_p.h> +#include <private/qopenglcontext_p.h> + +// ### remove +#include <QtQuick/private/qquicktext_p.h> + +QT_BEGIN_HEADER + +QT_BEGIN_NAMESPACE + +class QSGNode; +class QImage; +class TextureReference; +class QSGDistanceFieldGlyphCacheManager; +class QSGDistanceFieldGlyphNode; + +// TODO: Rename from XInterface to AbstractX. +class Q_QUICK_EXPORT QSGRectangleNode : public QSGGeometryNode +{ +public: + virtual void setRect(const QRectF &rect) = 0; + virtual void setColor(const QColor &color) = 0; + virtual void setPenColor(const QColor &color) = 0; + virtual void setPenWidth(qreal width) = 0; + virtual void setGradientStops(const QGradientStops &stops) = 0; + virtual void setRadius(qreal radius) = 0; + virtual void setAligned(bool aligned) = 0; + + virtual void update() = 0; +}; + + +class Q_QUICK_EXPORT QSGImageNode : public QSGGeometryNode +{ +public: + virtual void setTargetRect(const QRectF &rect) = 0; + virtual void setSourceRect(const QRectF &rect) = 0; + virtual void setTexture(QSGTexture *texture) = 0; + + virtual void setMipmapFiltering(QSGTexture::Filtering filtering) = 0; + virtual void setFiltering(QSGTexture::Filtering filtering) = 0; + virtual void setHorizontalWrapMode(QSGTexture::WrapMode wrapMode) = 0; + virtual void setVerticalWrapMode(QSGTexture::WrapMode wrapMode) = 0; + + virtual void update() = 0; +}; + + +class Q_QUICK_EXPORT QSGGlyphNode : public QSGGeometryNode +{ +public: + enum AntialiasingMode + { + GrayAntialiasing, + LowQualitySubPixelAntialiasing, + HighQualitySubPixelAntialiasing + }; + + virtual void setGlyphs(const QPointF &position, const QGlyphRun &glyphs) = 0; + virtual void setColor(const QColor &color) = 0; + virtual void setStyle(QQuickText::TextStyle style) = 0; + virtual void setStyleColor(const QColor &color) = 0; + virtual QPointF baseLine() const = 0; + + virtual QRectF boundingRect() const { return m_bounding_rect; } + virtual void setBoundingRect(const QRectF &bounds) { m_bounding_rect = bounds; } + + virtual void setPreferredAntialiasingMode(AntialiasingMode) = 0; + + virtual void update() = 0; + +protected: + QRectF m_bounding_rect; +}; + +class Q_QUICK_EXPORT QSGDistanceFieldGlyphCache +{ +public: + QSGDistanceFieldGlyphCache(QSGDistanceFieldGlyphCacheManager *man, QOpenGLContext *c, const QRawFont &font); + virtual ~QSGDistanceFieldGlyphCache(); + + struct Metrics { + qreal width; + qreal height; + qreal baselineX; + qreal baselineY; + + bool isNull() const { return width == 0 || height == 0; } + }; + + struct TexCoord { + qreal x; + qreal y; + qreal width; + qreal height; + qreal xMargin; + qreal yMargin; + + TexCoord() : x(0), y(0), width(-1), height(-1), xMargin(0), yMargin(0) { } + + bool isNull() const { return width <= 0 || height <= 0; } + bool isValid() const { return width >= 0 && height >= 0; } + }; + + struct Texture { + GLuint textureId; + QSize size; + + Texture() : textureId(0), size(QSize()) { } + bool operator == (const Texture &other) const { return textureId == other.textureId; } + }; + + const QSGDistanceFieldGlyphCacheManager *manager() const { return m_manager; } + + const QRawFont &font() const { return m_font; } + + qreal fontScale() const; + int distanceFieldRadius() const; + int glyphCount() const { return m_glyphCount; } + bool doubleGlyphResolution() const { return m_cacheData->doubleGlyphResolution; } + + Metrics glyphMetrics(glyph_t glyph); + TexCoord glyphTexCoord(glyph_t glyph) const; + const Texture *glyphTexture(glyph_t glyph) const; + + void populate(const QVector<glyph_t> &glyphs); + void release(const QVector<glyph_t> &glyphs); + + void update(); + + void registerGlyphNode(QSGDistanceFieldGlyphNode *node); + void unregisterGlyphNode(QSGDistanceFieldGlyphNode *node); + +protected: + struct GlyphPosition { + glyph_t glyph; + QPointF position; + }; + + virtual void requestGlyphs(const QVector<glyph_t> &glyphs) = 0; + virtual void storeGlyphs(const QHash<glyph_t, QImage> &glyphs) = 0; + virtual void releaseGlyphs(const QVector<glyph_t> &glyphs) = 0; + + void addGlyphPositions(const QList<GlyphPosition> &glyphs); + void addGlyphTextures(const QVector<glyph_t> &glyphs, const Texture &tex); + void markGlyphsToRender(const QVector<glyph_t> &glyphs); + void removeGlyph(glyph_t glyph); + + void updateTexture(GLuint oldTex, GLuint newTex, const QSize &newTexSize); + + bool containsGlyph(glyph_t glyph) const; + + QOpenGLContext *ctx; + +private: + struct GlyphCacheData : public QOpenGLSharedResource { + QList<Texture> textures; + QHash<glyph_t, Texture*> glyphTextures; + QHash<glyph_t, TexCoord> texCoords; + QDataBuffer<glyph_t> pendingGlyphs; + QHash<glyph_t, QPainterPath> glyphPaths; + bool doubleGlyphResolution; + QLinkedList<QSGDistanceFieldGlyphNode*> m_registeredNodes; + + GlyphCacheData(QOpenGLContext *ctx) + : QOpenGLSharedResource(ctx->shareGroup()) + , pendingGlyphs(64) + , doubleGlyphResolution(false) + {} + + void invalidateResource() + { + textures.clear(); + glyphTextures.clear(); + texCoords.clear(); + } + + void freeResource(QOpenGLContext *) + { + } + }; + + QSGDistanceFieldGlyphCacheManager *m_manager; + + QRawFont m_font; + QRawFont m_referenceFont; + + int m_glyphCount; + QHash<glyph_t, Metrics> m_metrics; + + GlyphCacheData *cacheData(); + GlyphCacheData *m_cacheData; + static QHash<QString, QOpenGLMultiGroupSharedResource> m_caches_data; +}; + + +QT_END_NAMESPACE + +QT_END_HEADER + +#endif |