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/****************************************************************************
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**
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** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the QtSvg module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** No Commercial Usage
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** This file contains pre-release code and may not be distributed.
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** You may use this file in accordance with the terms and conditions
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** contained in the Technology Preview License Agreement accompanying
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** this package.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** If you have questions regarding the use of this file, please contact
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** Nokia at qt-info@nokia.com.
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**
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**
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**
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "qsvggraphics_p.h"
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#ifndef QT_NO_SVG
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#include "qsvgfont_p.h"
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#include "qpainter.h"
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#include "qtextdocument.h"
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#include "qabstracttextdocumentlayout.h"
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#include "qtextcursor.h"
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#include "qdebug.h"
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#include <math.h>
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#include <limits.h>
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QT_BEGIN_NAMESPACE
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#define QT_SVG_DRAW_SHAPE(command) \
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qreal oldOpacity = p->opacity(); \
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QBrush oldBrush = p->brush(); \
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QPen oldPen = p->pen(); \
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p->setPen(Qt::NoPen); \
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p->setOpacity(oldOpacity * states.fillOpacity); \
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command; \
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p->setPen(oldPen); \
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if (oldPen.widthF() != 0) { \
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p->setOpacity(oldOpacity * states.strokeOpacity); \
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p->setBrush(Qt::NoBrush); \
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command; \
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p->setBrush(oldBrush); \
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} \
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p->setOpacity(oldOpacity);
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void QSvgAnimation::draw(QPainter *, QSvgExtraStates &)
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{
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qWarning("<animation> no implemented");
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}
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static inline QRectF boundsOnStroke(const QPainterPath &path, qreal width)
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{
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QPainterPathStroker stroker;
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stroker.setWidth(width);
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QPainterPath stroke = stroker.createStroke(path);
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return stroke.boundingRect();
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}
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QSvgCircle::QSvgCircle(QSvgNode *parent, const QRectF &rect)
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: QSvgNode(parent), m_bounds(rect)
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{
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}
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QRectF QSvgCircle::bounds() const
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{
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qreal sw = strokeWidth();
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if (qFuzzyIsNull(sw))
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return m_bounds;
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else {
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QPainterPath path;
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path.addRect(m_bounds);
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return boundsOnStroke(path, sw);
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}
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}
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void QSvgCircle::draw(QPainter *p, QSvgExtraStates &states)
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{
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applyStyle(p, states);
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QT_SVG_DRAW_SHAPE(p->drawEllipse(m_bounds));
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revertStyle(p, states);
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}
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QSvgArc::QSvgArc(QSvgNode *parent, const QPainterPath &path)
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: QSvgNode(parent), cubic(path)
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{
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m_cachedBounds = path.boundingRect();
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}
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void QSvgArc::draw(QPainter *p, QSvgExtraStates &states)
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{
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applyStyle(p, states);
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if (p->pen().widthF() != 0) {
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qreal oldOpacity = p->opacity();
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p->setOpacity(oldOpacity * states.strokeOpacity);
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p->drawPath(cubic);
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p->setOpacity(oldOpacity);
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}
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revertStyle(p, states);
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}
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QSvgEllipse::QSvgEllipse(QSvgNode *parent, const QRectF &rect)
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: QSvgNode(parent), m_bounds(rect)
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{
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}
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QRectF QSvgEllipse::bounds() const
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{
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qreal sw = strokeWidth();
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if (qFuzzyIsNull(sw))
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return m_bounds;
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else {
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QPainterPath path;
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path.addEllipse(m_bounds);
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return boundsOnStroke(path, sw);
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}
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}
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void QSvgEllipse::draw(QPainter *p, QSvgExtraStates &states)
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{
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applyStyle(p, states);
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QT_SVG_DRAW_SHAPE(p->drawEllipse(m_bounds));
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revertStyle(p, states);
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}
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QSvgImage::QSvgImage(QSvgNode *parent, const QImage &image,
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const QRect &bounds)
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: QSvgNode(parent), m_image(image),
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m_bounds(bounds)
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{
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if (m_bounds.width() == 0)
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m_bounds.setWidth(m_image.width());
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if (m_bounds.height() == 0)
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m_bounds.setHeight(m_image.height());
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}
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void QSvgImage::draw(QPainter *p, QSvgExtraStates &states)
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{
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applyStyle(p, states);
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p->drawImage(m_bounds, m_image);
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revertStyle(p, states);
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}
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QSvgLine::QSvgLine(QSvgNode *parent, const QLineF &line)
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: QSvgNode(parent), m_bounds(line)
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{
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}
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void QSvgLine::draw(QPainter *p, QSvgExtraStates &states)
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{
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applyStyle(p, states);
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if (p->pen().widthF() != 0) {
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qreal oldOpacity = p->opacity();
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p->setOpacity(oldOpacity * states.strokeOpacity);
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p->drawLine(m_bounds);
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p->setOpacity(oldOpacity);
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}
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revertStyle(p, states);
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}
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QSvgPath::QSvgPath(QSvgNode *parent, const QPainterPath &qpath)
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: QSvgNode(parent), m_path(qpath)
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{
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}
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void QSvgPath::draw(QPainter *p, QSvgExtraStates &states)
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{
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applyStyle(p, states);
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m_path.setFillRule(states.fillRule);
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QT_SVG_DRAW_SHAPE(p->drawPath(m_path));
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revertStyle(p, states);
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}
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QRectF QSvgPath::bounds() const
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{
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qreal sw = strokeWidth();
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if (qFuzzyIsNull(sw)) {
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if (m_cachedBounds.isNull())
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//m_cachedBounds = m_path.controlPointRect();
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m_cachedBounds = m_path.boundingRect();
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return m_cachedBounds;
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}
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else {
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return boundsOnStroke(m_path, sw);
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}
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}
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QSvgPolygon::QSvgPolygon(QSvgNode *parent, const QPolygonF &poly)
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: QSvgNode(parent), m_poly(poly)
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{
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}
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QRectF QSvgPolygon::bounds() const
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{
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qreal sw = strokeWidth();
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if (qFuzzyIsNull(sw))
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return m_poly.boundingRect();
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else {
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QPainterPath path;
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path.addPolygon(m_poly);
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return boundsOnStroke(path, sw);
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}
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}
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void QSvgPolygon::draw(QPainter *p, QSvgExtraStates &states)
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{
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applyStyle(p, states);
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QT_SVG_DRAW_SHAPE(p->drawPolygon(m_poly, states.fillRule));
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revertStyle(p, states);
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}
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QSvgPolyline::QSvgPolyline(QSvgNode *parent, const QPolygonF &poly)
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: QSvgNode(parent), m_poly(poly)
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{
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}
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void QSvgPolyline::draw(QPainter *p, QSvgExtraStates &states)
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{
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applyStyle(p, states);
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qreal oldOpacity = p->opacity();
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if (p->brush().style() != Qt::NoBrush) {
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QPen save = p->pen();
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p->setPen(QPen(Qt::NoPen));
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p->setOpacity(oldOpacity * states.fillOpacity);
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p->drawPolygon(m_poly, states.fillRule);
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p->setPen(save);
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}
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if (p->pen().widthF() != 0) {
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p->setOpacity(oldOpacity * states.strokeOpacity);
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p->drawPolyline(m_poly);
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}
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p->setOpacity(oldOpacity);
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revertStyle(p, states);
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}
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QSvgRect::QSvgRect(QSvgNode *node, const QRectF &rect, int rx, int ry)
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: QSvgNode(node),
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m_rect(rect), m_rx(rx), m_ry(ry)
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{
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}
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QRectF QSvgRect::bounds() const
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{
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qreal sw = strokeWidth();
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if (qFuzzyIsNull(sw))
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return m_rect;
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else {
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QPainterPath path;
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path.addRect(m_rect);
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return boundsOnStroke(path, sw);
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}
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}
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void QSvgRect::draw(QPainter *p, QSvgExtraStates &states)
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{
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applyStyle(p, states);
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if (m_rx || m_ry) {
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QT_SVG_DRAW_SHAPE(p->drawRoundedRect(m_rect, m_rx, m_ry, Qt::RelativeSize));
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} else {
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QT_SVG_DRAW_SHAPE(p->drawRect(m_rect));
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}
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revertStyle(p, states);
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}
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QSvgTspan * const QSvgText::LINEBREAK = 0;
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QSvgText::QSvgText(QSvgNode *parent, const QPointF &coord)
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: QSvgNode(parent)
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, m_coord(coord)
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, m_type(TEXT)
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, m_size(0, 0)
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, m_mode(Default)
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{
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}
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QSvgText::~QSvgText()
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{
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for (int i = 0; i < m_tspans.size(); ++i) {
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if (m_tspans[i] != LINEBREAK)
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delete m_tspans[i];
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}
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}
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void QSvgText::setTextArea(const QSizeF &size)
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{
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m_size = size;
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m_type = TEXTAREA;
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}
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//QRectF QSvgText::bounds() const {}
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void QSvgText::draw(QPainter *p, QSvgExtraStates &states)
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{
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applyStyle(p, states);
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qreal oldOpacity = p->opacity();
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p->setOpacity(oldOpacity * states.fillOpacity);
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// Force the font to have a size of 100 pixels to avoid truncation problems
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// when the font is very small.
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qreal scale = 100.0 / p->font().pointSizeF();
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Qt::Alignment alignment = states.textAnchor;
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QTransform oldTransform = p->worldTransform();
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p->scale(1 / scale, 1 / scale);
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qreal y = 0;
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bool initial = true;
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qreal px = m_coord.x() * scale;
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qreal py = m_coord.y() * scale;
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QSizeF scaledSize = m_size * scale;
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if (m_type == TEXTAREA) {
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if (alignment == Qt::AlignHCenter)
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px += scaledSize.width() / 2;
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else if (alignment == Qt::AlignRight)
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px += scaledSize.width();
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}
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QRectF bounds;
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if (m_size.height() != 0)
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bounds = QRectF(0, py, 1, scaledSize.height()); // x and width are not used.
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bool appendSpace = false;
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QVector<QString> paragraphs;
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QStack<QTextCharFormat> formats;
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QVector<QList<QTextLayout::FormatRange> > formatRanges;
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paragraphs.push_back(QString());
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formatRanges.push_back(QList<QTextLayout::FormatRange>());
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for (int i = 0; i < m_tspans.size(); ++i) {
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if (m_tspans[i] == LINEBREAK) {
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if (m_type == TEXTAREA) {
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if (paragraphs.back().isEmpty()) {
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QFont font = p->font();
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font.setPixelSize(font.pointSizeF() * scale);
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QTextLayout::FormatRange range;
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range.start = 0;
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range.length = 1;
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range.format.setFont(font);
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formatRanges.back().append(range);
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paragraphs.back().append(QLatin1Char(' '));;
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}
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appendSpace = false;
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paragraphs.push_back(QString());
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formatRanges.push_back(QList<QTextLayout::FormatRange>());
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}
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} else {
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WhitespaceMode mode = m_tspans[i]->whitespaceMode();
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m_tspans[i]->applyStyle(p, states);
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QFont font = p->font();
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font.setPixelSize(font.pointSizeF() * scale);
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QString newText(m_tspans[i]->text());
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newText.replace(QLatin1Char('\t'), QLatin1Char(' '));
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newText.replace(QLatin1Char('\n'), QLatin1Char(' '));
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bool prependSpace = !appendSpace && !m_tspans[i]->isTspan() && (mode == Default) && !paragraphs.back().isEmpty() && newText.startsWith(QLatin1Char(' '));
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if (appendSpace || prependSpace)
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paragraphs.back().append(QLatin1Char(' '));
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bool appendSpaceNext = (!m_tspans[i]->isTspan() && (mode == Default) && newText.endsWith(QLatin1Char(' ')));
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if (mode == Default) {
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newText = newText.simplified();
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if (newText.isEmpty())
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appendSpaceNext = false;
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}
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QTextLayout::FormatRange range;
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range.start = paragraphs.back().length();
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range.length = newText.length();
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range.format.setFont(font);
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range.format.setTextOutline(p->pen());
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range.format.setForeground(p->brush());
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if (appendSpace) {
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Q_ASSERT(!formatRanges.back().isEmpty());
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++formatRanges.back().back().length;
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} else if (prependSpace) {
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--range.start;
|
|
419 |
++range.length;
|
|
420 |
}
|
|
421 |
formatRanges.back().append(range);
|
|
422 |
|
|
423 |
appendSpace = appendSpaceNext;
|
|
424 |
paragraphs.back() += newText;
|
|
425 |
|
|
426 |
m_tspans[i]->revertStyle(p, states);
|
|
427 |
}
|
|
428 |
}
|
|
429 |
|
|
430 |
if (states.svgFont) {
|
|
431 |
// SVG fonts not fully supported...
|
|
432 |
QString text = paragraphs.front();
|
|
433 |
for (int i = 1; i < paragraphs.size(); ++i) {
|
|
434 |
text.append(QLatin1Char('\n'));
|
|
435 |
text.append(paragraphs[i]);
|
|
436 |
}
|
|
437 |
states.svgFont->draw(p, m_coord * scale, text, p->font().pointSizeF() * scale, states.textAnchor);
|
|
438 |
} else {
|
|
439 |
for (int i = 0; i < paragraphs.size(); ++i) {
|
|
440 |
QTextLayout tl(paragraphs[i]);
|
|
441 |
QTextOption op = tl.textOption();
|
|
442 |
op.setWrapMode(QTextOption::WrapAtWordBoundaryOrAnywhere);
|
|
443 |
tl.setTextOption(op);
|
|
444 |
tl.setAdditionalFormats(formatRanges[i]);
|
|
445 |
tl.beginLayout();
|
|
446 |
|
|
447 |
forever {
|
|
448 |
QTextLine line = tl.createLine();
|
|
449 |
if (!line.isValid())
|
|
450 |
break;
|
|
451 |
if (m_size.width() != 0)
|
|
452 |
line.setLineWidth(scaledSize.width());
|
|
453 |
}
|
|
454 |
tl.endLayout();
|
|
455 |
|
|
456 |
bool endOfBoundsReached = false;
|
|
457 |
for (int i = 0; i < tl.lineCount(); ++i) {
|
|
458 |
QTextLine line = tl.lineAt(i);
|
|
459 |
|
|
460 |
qreal x = 0;
|
|
461 |
if (alignment == Qt::AlignHCenter)
|
|
462 |
x -= 0.5 * line.naturalTextWidth();
|
|
463 |
else if (alignment == Qt::AlignRight)
|
|
464 |
x -= line.naturalTextWidth();
|
|
465 |
|
|
466 |
if (initial && m_type == TEXT)
|
|
467 |
y -= line.ascent();
|
|
468 |
initial = false;
|
|
469 |
|
|
470 |
line.setPosition(QPointF(x, y));
|
|
471 |
|
|
472 |
// Check if the current line fits into the bounding rectangle.
|
|
473 |
if ((m_size.width() != 0 && line.naturalTextWidth() > scaledSize.width())
|
|
474 |
|| (m_size.height() != 0 && y + line.height() > scaledSize.height())) {
|
|
475 |
// I need to set the bounds height to 'y-epsilon' to avoid drawing the current
|
|
476 |
// line. Since the font is scaled to 100 units, 1 should be a safe epsilon.
|
|
477 |
bounds.setHeight(y - 1);
|
|
478 |
endOfBoundsReached = true;
|
|
479 |
break;
|
|
480 |
}
|
|
481 |
|
|
482 |
y += 1.1 * line.height();
|
|
483 |
}
|
|
484 |
tl.draw(p, QPointF(px, py), QVector<QTextLayout::FormatRange>(), bounds);
|
|
485 |
|
|
486 |
if (endOfBoundsReached)
|
|
487 |
break;
|
|
488 |
}
|
|
489 |
}
|
|
490 |
|
|
491 |
p->setWorldTransform(oldTransform, false);
|
|
492 |
p->setOpacity(oldOpacity);
|
|
493 |
revertStyle(p, states);
|
|
494 |
}
|
|
495 |
|
|
496 |
void QSvgText::addText(const QString &text)
|
|
497 |
{
|
|
498 |
m_tspans.append(new QSvgTspan(this, false));
|
|
499 |
m_tspans.back()->setWhitespaceMode(m_mode);
|
|
500 |
m_tspans.back()->addText(text);
|
|
501 |
}
|
|
502 |
|
|
503 |
QSvgUse::QSvgUse(const QPointF &start, QSvgNode *parent, QSvgNode *node)
|
|
504 |
: QSvgNode(parent), m_link(node), m_start(start)
|
|
505 |
{
|
|
506 |
|
|
507 |
}
|
|
508 |
|
|
509 |
void QSvgUse::draw(QPainter *p, QSvgExtraStates &states)
|
|
510 |
{
|
|
511 |
applyStyle(p, states);
|
|
512 |
|
|
513 |
if (!m_start.isNull()) {
|
|
514 |
p->translate(m_start);
|
|
515 |
}
|
|
516 |
m_link->draw(p, states);
|
|
517 |
if (!m_start.isNull()) {
|
|
518 |
p->translate(-m_start);
|
|
519 |
}
|
|
520 |
|
|
521 |
revertStyle(p, states);
|
|
522 |
}
|
|
523 |
|
|
524 |
void QSvgVideo::draw(QPainter *p, QSvgExtraStates &states)
|
|
525 |
{
|
|
526 |
applyStyle(p, states);
|
|
527 |
|
|
528 |
revertStyle(p, states);
|
|
529 |
}
|
|
530 |
|
|
531 |
QSvgNode::Type QSvgAnimation::type() const
|
|
532 |
{
|
|
533 |
return ANIMATION;
|
|
534 |
}
|
|
535 |
|
|
536 |
QSvgNode::Type QSvgArc::type() const
|
|
537 |
{
|
|
538 |
return ARC;
|
|
539 |
}
|
|
540 |
|
|
541 |
QSvgNode::Type QSvgCircle::type() const
|
|
542 |
{
|
|
543 |
return CIRCLE;
|
|
544 |
}
|
|
545 |
|
|
546 |
QSvgNode::Type QSvgEllipse::type() const
|
|
547 |
{
|
|
548 |
return ELLIPSE;
|
|
549 |
}
|
|
550 |
|
|
551 |
QSvgNode::Type QSvgImage::type() const
|
|
552 |
{
|
|
553 |
return IMAGE;
|
|
554 |
}
|
|
555 |
|
|
556 |
QSvgNode::Type QSvgLine::type() const
|
|
557 |
{
|
|
558 |
return LINE;
|
|
559 |
}
|
|
560 |
|
|
561 |
QSvgNode::Type QSvgPath::type() const
|
|
562 |
{
|
|
563 |
return PATH;
|
|
564 |
}
|
|
565 |
|
|
566 |
QSvgNode::Type QSvgPolygon::type() const
|
|
567 |
{
|
|
568 |
return POLYGON;
|
|
569 |
}
|
|
570 |
|
|
571 |
QSvgNode::Type QSvgPolyline::type() const
|
|
572 |
{
|
|
573 |
return POLYLINE;
|
|
574 |
}
|
|
575 |
|
|
576 |
QSvgNode::Type QSvgRect::type() const
|
|
577 |
{
|
|
578 |
return RECT;
|
|
579 |
}
|
|
580 |
|
|
581 |
QSvgNode::Type QSvgText::type() const
|
|
582 |
{
|
|
583 |
return m_type;
|
|
584 |
}
|
|
585 |
|
|
586 |
QSvgNode::Type QSvgUse::type() const
|
|
587 |
{
|
|
588 |
return USE;
|
|
589 |
}
|
|
590 |
|
|
591 |
QSvgNode::Type QSvgVideo::type() const
|
|
592 |
{
|
|
593 |
return VIDEO;
|
|
594 |
}
|
|
595 |
|
|
596 |
QRectF QSvgUse::bounds() const
|
|
597 |
{
|
|
598 |
if (m_link && m_bounds.isEmpty()) {
|
|
599 |
m_bounds = m_link->bounds();
|
|
600 |
m_bounds = QRectF(m_bounds.x()+m_start.x(),
|
|
601 |
m_bounds.y()+m_start.y(),
|
|
602 |
m_bounds.width(),
|
|
603 |
m_bounds.height());
|
|
604 |
|
|
605 |
return m_bounds;
|
|
606 |
}
|
|
607 |
return m_bounds;
|
|
608 |
}
|
|
609 |
|
|
610 |
QRectF QSvgUse::transformedBounds(const QTransform &transform) const
|
|
611 |
{
|
|
612 |
QRectF bounds;
|
|
613 |
QTransform t = transform;
|
|
614 |
|
|
615 |
if (m_link) {
|
|
616 |
QSvgTransformStyle *transStyle = m_style.transform;
|
|
617 |
if (transStyle) {
|
|
618 |
t = transStyle->qtransform() * t;
|
|
619 |
}
|
|
620 |
t.translate(m_start.x(), m_start.y());
|
|
621 |
|
|
622 |
bounds = m_link->transformedBounds(t);
|
|
623 |
|
|
624 |
return bounds;
|
|
625 |
}
|
|
626 |
return bounds;
|
|
627 |
}
|
|
628 |
|
|
629 |
QRectF QSvgPolyline::bounds() const
|
|
630 |
{
|
|
631 |
qreal sw = strokeWidth();
|
|
632 |
if (qFuzzyIsNull(sw))
|
|
633 |
return m_poly.boundingRect();
|
|
634 |
else {
|
|
635 |
QPainterPath path;
|
|
636 |
path.addPolygon(m_poly);
|
|
637 |
return boundsOnStroke(path, sw);
|
|
638 |
}
|
|
639 |
}
|
|
640 |
|
|
641 |
QRectF QSvgArc::bounds() const
|
|
642 |
{
|
|
643 |
qreal sw = strokeWidth();
|
|
644 |
if (qFuzzyIsNull(sw))
|
|
645 |
return m_cachedBounds;
|
|
646 |
else {
|
|
647 |
return boundsOnStroke(cubic, sw);
|
|
648 |
}
|
|
649 |
}
|
|
650 |
|
|
651 |
QRectF QSvgImage::bounds() const
|
|
652 |
{
|
|
653 |
return m_bounds;
|
|
654 |
}
|
|
655 |
|
|
656 |
QRectF QSvgLine::bounds() const
|
|
657 |
{
|
|
658 |
qreal sw = strokeWidth();
|
|
659 |
if (qFuzzyIsNull(sw)) {
|
|
660 |
qreal minX = qMin(m_bounds.x1(), m_bounds.x2());
|
|
661 |
qreal minY = qMin(m_bounds.y1(), m_bounds.y2());
|
|
662 |
qreal maxX = qMax(m_bounds.x1(), m_bounds.x2());
|
|
663 |
qreal maxY = qMax(m_bounds.y1(), m_bounds.y2());
|
|
664 |
return QRectF(minX, minY, maxX-minX, maxY-minY);
|
|
665 |
} else {
|
|
666 |
QPainterPath path;
|
|
667 |
path.moveTo(m_bounds.x1(), m_bounds.y1());
|
|
668 |
path.lineTo(m_bounds.x2(), m_bounds.y2());
|
|
669 |
return boundsOnStroke(path, sw);
|
|
670 |
}
|
|
671 |
}
|
|
672 |
|
|
673 |
QT_END_NAMESPACE
|
|
674 |
|
|
675 |
#endif // QT_NO_SVG
|