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/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtQml 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 DISTANCEFIELD_GLYPHNODE_H
#define DISTANCEFIELD_GLYPHNODE_H
#include <private/qsgadaptationlayer_p.h>
#include <QtQuick/qsgtexture.h>
#include <QtQuick/private/qquicktext_p.h>
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
class QSGContext;
class QSGDistanceFieldGlyphCacheManager;
class QSGDistanceFieldTextMaterial;
class QSGDistanceFieldGlyphNode: public QSGGlyphNode, public QSGDistanceFieldGlyphConsumer
{
public:
QSGDistanceFieldGlyphNode(QSGContext *context);
~QSGDistanceFieldGlyphNode();
virtual QPointF baseLine() const { return m_baseLine; }
virtual void setGlyphs(const QPointF &position, const QGlyphRun &glyphs);
virtual void setColor(const QColor &color);
virtual void setPreferredAntialiasingMode(AntialiasingMode mode);
virtual void setStyle(QQuickText::TextStyle style);
virtual void setStyleColor(const QColor &color);
virtual void update();
void preprocess();
void invalidateGlyphs(const QVector<quint32> &glyphs);
void updateGeometry();
private:
enum DistanceFieldGlyphNodeType {
RootGlyphNode,
SubGlyphNode
};
void setGlyphNodeType(DistanceFieldGlyphNodeType type) { m_glyphNodeType = type; }
void updateMaterial();
DistanceFieldGlyphNodeType m_glyphNodeType;
QColor m_color;
QPointF m_baseLine;
QSGContext *m_context;
QSGDistanceFieldTextMaterial *m_material;
QPointF m_originalPosition;
QPointF m_position;
QGlyphRun m_glyphs;
QSGDistanceFieldGlyphCache *m_glyph_cache;
QSGGeometry m_geometry;
QQuickText::TextStyle m_style;
QColor m_styleColor;
AntialiasingMode m_antialiasingMode;
QRectF m_boundingRect;
const QSGDistanceFieldGlyphCache::Texture *m_texture;
QLinkedList<QSGNode *> m_nodesToDelete;
struct GlyphInfo {
QVector<quint32> indexes;
QVector<QPointF> positions;
};
QSet<quint32> m_allGlyphIndexesLookup;
uint m_dirtyGeometry: 1;
uint m_dirtyMaterial: 1;
};
QT_END_HEADER
QT_END_NAMESPACE
#endif // DISTANCEFIELD_GLYPHNODE_H
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