-
Gunnar Sletta authored
Change-Id: I3750c47640bf21c3567c5fa1c4667e3e2552942e Reviewed-by:Lars Knoll <lars.knoll@digia.com>
42405200
qsgadaptationlayer_p.h 9.63 KiB
/******************************************************************************** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).** Contact: http://www.qt-project.org/legal**** This file is part of the QtQuick module of the Qt Toolkit.**** $QT_BEGIN_LICENSE:LGPL$** Commercial License Usage** Licensees holding valid commercial Qt licenses may use this file in** accordance with the commercial license agreement provided with the** Software or, alternatively, in accordance with the terms contained in** a written agreement between you and Digia. For licensing terms and** conditions see http://qt.digia.com/licensing. For further information** use the contact form at http://qt.digia.com/contact-us.**** 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, Digia gives you certain additional** rights. These rights are described in the Digia 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.****** $QT_END_LICENSE$******************************************************************************/#ifndef QSGADAPTATIONLAYER_P_H#define QSGADAPTATIONLAYER_P_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>#include <private/qdistancefield_p.h>// ### remove#include <QtQuick/private/qquicktext_p.h>QT_BEGIN_NAMESPACEclass QSGNode;class QImage;class TextureReference;class QSGDistanceFieldGlyphCacheManager;class QSGDistanceFieldGlyphNode;class Q_QUICK_PRIVATE_EXPORT QSGRectangleNode : public QSGGeometryNode7172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140
{
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 setAntialiasing(bool antialiasing) { Q_UNUSED(antialiasing) }
virtual void setAligned(bool aligned) = 0;
virtual void update() = 0;
};
class Q_QUICK_PRIVATE_EXPORT QSGImageNode : public QSGGeometryNode
{
public:
virtual void setTargetRect(const QRectF &rect) = 0;
virtual void setInnerTargetRect(const QRectF &rect) = 0;
virtual void setInnerSourceRect(const QRectF &rect) = 0;
// The sub-source rect's width and height specify the number of times the inner source rect
// is repeated inside the inner target rect. The x and y specify which (normalized) location
// in the inner source rect maps to the upper-left corner of the inner target rect.
virtual void setSubSourceRect(const QRectF &rect) = 0;
virtual void setTexture(QSGTexture *texture) = 0;
virtual void setAntialiasing(bool antialiasing) { Q_UNUSED(antialiasing) }
virtual void setMirror(bool mirror) = 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_PRIVATE_EXPORT QSGGlyphNode : public QSGGeometryNode
{
public:
enum AntialiasingMode
{
GrayAntialiasing,
LowQualitySubPixelAntialiasing,
HighQualitySubPixelAntialiasing
};
QSGGlyphNode() : m_ownerElement(0) {}
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;
void setOwnerElement(QQuickItem *ownerElement) { m_ownerElement = ownerElement; }
QQuickItem *ownerElement() const { return m_ownerElement; }
protected:
QRectF m_bounding_rect;
QQuickItem *m_ownerElement;
};
141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210
class Q_QUICK_PRIVATE_EXPORT QSGDistanceFieldGlyphConsumer
{
public:
virtual ~QSGDistanceFieldGlyphConsumer() {}
virtual void invalidateGlyphs(const QVector<quint32> &glyphs) = 0;
};
class Q_QUICK_PRIVATE_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 &referenceFont() const { return m_referenceFont; }
qreal fontScale(qreal pixelSize) const
{
return pixelSize / QT_DISTANCEFIELD_BASEFONTSIZE(m_doubleGlyphResolution);
}
int distanceFieldRadius() const
{
return QT_DISTANCEFIELD_RADIUS(m_doubleGlyphResolution) / QT_DISTANCEFIELD_SCALE(m_doubleGlyphResolution);
}
int glyphCount() const { return m_glyphCount; }
bool doubleGlyphResolution() const { return m_doubleGlyphResolution; }
Metrics glyphMetrics(glyph_t glyph, qreal pixelSize);
inline TexCoord glyphTexCoord(glyph_t glyph);
inline const Texture *glyphTexture(glyph_t glyph);
void populate(const QVector<glyph_t> &glyphs);
void release(const QVector<glyph_t> &glyphs);
void update();
void registerGlyphNode(QSGDistanceFieldGlyphConsumer *node) { m_registeredNodes.append(node); }
211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280
void unregisterGlyphNode(QSGDistanceFieldGlyphConsumer *node) { m_registeredNodes.removeOne(node); }
virtual void registerOwnerElement(QQuickItem *ownerElement);
virtual void unregisterOwnerElement(QQuickItem *ownerElement);
virtual void processPendingGlyphs();
protected:
struct GlyphPosition {
glyph_t glyph;
QPointF position;
};
struct GlyphData {
Texture *texture;
TexCoord texCoord;
QRectF boundingRect;
quint32 ref;
GlyphData() : texture(0), ref(0) { }
};
virtual void requestGlyphs(const QSet<glyph_t> &glyphs) = 0;
virtual void storeGlyphs(const QList<QDistanceField> &glyphs) = 0;
virtual void referenceGlyphs(const QSet<glyph_t> &glyphs) = 0;
virtual void releaseGlyphs(const QSet<glyph_t> &glyphs) = 0;
void setGlyphsPosition(const QList<GlyphPosition> &glyphs);
void setGlyphsTexture(const QVector<glyph_t> &glyphs, const Texture &tex);
void markGlyphsToRender(const QVector<glyph_t> &glyphs);
inline void removeGlyph(glyph_t glyph);
void updateTexture(GLuint oldTex, GLuint newTex, const QSize &newTexSize);
inline bool containsGlyph(glyph_t glyph);
GLuint textureIdForGlyph(glyph_t glyph) const;
GlyphData &glyphData(glyph_t glyph);
QOpenGLContext *ctx;
private:
QSGDistanceFieldGlyphCacheManager *m_manager;
QRawFont m_referenceFont;
int m_glyphCount;
bool m_doubleGlyphResolution;
QList<Texture> m_textures;
QHash<glyph_t, GlyphData> m_glyphsData;
QDataBuffer<glyph_t> m_pendingGlyphs;
QSet<glyph_t> m_populatingGlyphs;
QLinkedList<QSGDistanceFieldGlyphConsumer*> m_registeredNodes;
static Texture s_emptyTexture;
};
inline QSGDistanceFieldGlyphCache::TexCoord QSGDistanceFieldGlyphCache::glyphTexCoord(glyph_t glyph)
{
return glyphData(glyph).texCoord;
}
inline const QSGDistanceFieldGlyphCache::Texture *QSGDistanceFieldGlyphCache::glyphTexture(glyph_t glyph)
{
return glyphData(glyph).texture;
}
inline void QSGDistanceFieldGlyphCache::removeGlyph(glyph_t glyph)
{
GlyphData &gd = glyphData(glyph);
281282283284285286287288289290291292293294
gd.texCoord = TexCoord();
gd.texture = &s_emptyTexture;
}
inline bool QSGDistanceFieldGlyphCache::containsGlyph(glyph_t glyph)
{
return glyphData(glyph).texCoord.isValid();
}
QT_END_NAMESPACE
#endif