Long live Qt!

1 files changed, 642 insertions, 0 deletions

diff --git a/src/svg/qsvggraphics.cpp b/src/svg/qsvggraphics.cpp
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+++ b/src/svg/qsvggraphics.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtSvg module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, 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.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qsvggraphics_p.h"
+
+#ifndef QT_NO_SVG
+
+#include "qsvgfont_p.h"
+
+#include "qpainter.h"
+#include "qtextdocument.h"
+#include "qabstracttextdocumentlayout.h"
+#include "qtextcursor.h"
+#include "qdebug.h"
+
+#include <math.h>
+#include <limits.h>
+
+QT_BEGIN_NAMESPACE
+
+#define QT_SVG_DRAW_SHAPE(command)                  \
+    applyStyle(p, states);                          \
+    qreal oldOpacity = p->opacity();                \
+    QBrush oldBrush = p->brush();                   \
+    QPen oldPen = p->pen();                         \
+    p->setPen(Qt::NoPen);                           \
+    p->setOpacity(oldOpacity * states.fillOpacity); \
+    command;                                        \
+    p->setOpacity(oldOpacity);                      \
+    p->setPen(oldPen);                              \
+    p->setBrush(Qt::NoBrush);                       \
+    command;                                        \
+    p->setBrush(oldBrush);                          \
+    revertStyle(p, states);
+
+
+void QSvgAnimation::draw(QPainter *, QSvgExtraStates &)
+{
+    qWarning("<animation> no implemented");
+}
+
+static inline QRectF boundsOnStroke(const QPainterPath &path, qreal width)
+{
+    QPainterPathStroker stroker;
+    stroker.setWidth(width);
+    QPainterPath stroke = stroker.createStroke(path);
+    return stroke.boundingRect();
+}
+
+QSvgCircle::QSvgCircle(QSvgNode *parent, const QRectF &rect)
+    : QSvgNode(parent), m_bounds(rect)
+{
+}
+
+
+QRectF QSvgCircle::bounds() const
+{
+    qreal sw = strokeWidth();
+    if (qFuzzyCompare(sw + 1, 1))
+        return m_bounds;
+    else {
+        QPainterPath path;
+        path.addRect(m_bounds);
+        return boundsOnStroke(path, sw);
+    }
+}
+
+void QSvgCircle::draw(QPainter *p, QSvgExtraStates &states)
+{
+    QT_SVG_DRAW_SHAPE(p->drawEllipse(m_bounds));
+}
+
+QSvgArc::QSvgArc(QSvgNode *parent, const QPainterPath &path)
+    : QSvgNode(parent), cubic(path)
+{
+    m_cachedBounds = path.boundingRect();
+}
+
+void QSvgArc::draw(QPainter *p, QSvgExtraStates &states)
+{
+    applyStyle(p, states);
+    p->drawPath(cubic);
+    revertStyle(p, states);
+}
+
+QSvgEllipse::QSvgEllipse(QSvgNode *parent, const QRectF &rect)
+    : QSvgNode(parent), m_bounds(rect)
+{
+}
+
+QRectF QSvgEllipse::bounds() const
+{
+    qreal sw = strokeWidth();
+    if (qFuzzyCompare(sw + 1, 1))
+        return m_bounds;
+    else {
+        QPainterPath path;
+        path.addEllipse(m_bounds);
+        return boundsOnStroke(path, sw);
+    }
+}
+
+void QSvgEllipse::draw(QPainter *p, QSvgExtraStates &states)
+{
+    QT_SVG_DRAW_SHAPE(p->drawEllipse(m_bounds));
+}
+
+QSvgImage::QSvgImage(QSvgNode *parent, const QImage &image,
+                     const QRect &bounds)
+    : QSvgNode(parent), m_image(image),
+      m_bounds(bounds)
+{
+    if (m_bounds.width() == 0)
+        m_bounds.setWidth(m_image.width());
+    if (m_bounds.height() == 0)
+        m_bounds.setHeight(m_image.height());
+}
+
+void QSvgImage::draw(QPainter *p, QSvgExtraStates &states)
+{
+    applyStyle(p, states);
+    p->drawImage(m_bounds, m_image);
+    revertStyle(p, states);
+}
+
+
+QSvgLine::QSvgLine(QSvgNode *parent, const QLineF &line)
+    : QSvgNode(parent), m_bounds(line)
+{
+}
+
+
+void QSvgLine::draw(QPainter *p, QSvgExtraStates &states)
+{
+    applyStyle(p, states);
+    p->drawLine(m_bounds);
+    revertStyle(p, states);
+}
+
+QSvgPath::QSvgPath(QSvgNode *parent, const QPainterPath &qpath)
+    : QSvgNode(parent), m_path(qpath)
+{
+    //m_cachedBounds = m_path.controlPointRect();
+    m_cachedBounds = m_path.boundingRect();
+}
+
+void QSvgPath::draw(QPainter *p, QSvgExtraStates &states)
+{
+    QT_SVG_DRAW_SHAPE(p->drawPath(m_path));
+}
+
+QRectF QSvgPath::bounds() const
+{
+    qreal sw = strokeWidth();
+    if (qFuzzyCompare(sw + 1, 1))
+        return m_cachedBounds;
+    else {
+        return boundsOnStroke(m_path, sw);
+    }
+}
+
+QSvgPolygon::QSvgPolygon(QSvgNode *parent, const QPolygonF &poly)
+    : QSvgNode(parent), m_poly(poly)
+{
+
+}
+
+QRectF QSvgPolygon::bounds() const
+{
+    qreal sw = strokeWidth();
+    if (qFuzzyCompare(sw + 1, 1))
+        return m_poly.boundingRect();
+    else {
+        QPainterPath path;
+        path.addPolygon(m_poly);
+        return boundsOnStroke(path, sw);
+    }
+}
+
+void QSvgPolygon::draw(QPainter *p, QSvgExtraStates &states)
+{
+    QT_SVG_DRAW_SHAPE(p->drawPolygon(m_poly));
+}
+
+
+QSvgPolyline::QSvgPolyline(QSvgNode *parent, const QPolygonF &poly)
+    : QSvgNode(parent), m_poly(poly)
+{
+
+}
+
+void QSvgPolyline::draw(QPainter *p, QSvgExtraStates &states)
+{
+    applyStyle(p, states);
+    if (p->brush().style() != Qt::NoBrush) {
+        QPen save = p->pen();
+        p->setPen(QPen(Qt::NoPen));
+        p->drawPolygon(m_poly);
+        p->setPen(save);
+    }
+    p->drawPolyline(m_poly);
+    revertStyle(p, states);
+}
+
+QSvgRect::QSvgRect(QSvgNode *node, const QRectF &rect, int rx, int ry)
+    : QSvgNode(node),
+      m_rect(rect), m_rx(rx), m_ry(ry)
+{
+}
+
+QRectF QSvgRect::bounds() const
+{
+    qreal sw = strokeWidth();
+    if (qFuzzyCompare(sw + 1, 1))
+        return m_rect;
+    else {
+        QPainterPath path;
+        path.addRect(m_rect);
+        return boundsOnStroke(path, sw);
+    }
+}
+
+void QSvgRect::draw(QPainter *p, QSvgExtraStates &states)
+{
+    if (m_rx || m_ry) {
+        QT_SVG_DRAW_SHAPE(p->drawRoundedRect(m_rect, m_rx, m_ry, Qt::RelativeSize));
+    } else {
+        QT_SVG_DRAW_SHAPE(p->drawRect(m_rect));
+    }
+}
+
+QSvgText::QSvgText(QSvgNode *parent, const QPointF &coord)
+    : QSvgNode(parent)
+    , m_coord(coord)
+    , m_textAlignment(Qt::AlignLeft)
+    , m_scale(1)
+    , m_appendSpace(false)
+    , m_type(TEXT)
+    , m_size(0, 0)
+{
+    m_paragraphs.push_back(QString());
+    m_formatRanges.push_back(QList<QTextLayout::FormatRange>());
+}
+
+QSvgText::~QSvgText()
+{
+}
+
+void QSvgText::setTextArea(const QSizeF &size)
+{
+    m_size = size;
+    m_type = TEXTAREA;
+}
+
+//QRectF QSvgText::bounds() const {}
+
+void QSvgText::draw(QPainter *p, QSvgExtraStates &states)
+{
+    applyStyle(p, states);
+
+    QSvgFontStyle *fontStyle = static_cast<QSvgFontStyle*>(
+        styleProperty(QSvgStyleProperty::FONT));
+    if (fontStyle && fontStyle->svgFont()) {
+        // SVG fonts not fully supported...
+        QString text = m_paragraphs.front();
+        for (int i = 1; i < m_paragraphs.size(); ++i) {
+            text.append(QLatin1Char('\n'));
+            text.append(m_paragraphs[i]);
+        }
+        fontStyle->svgFont()->draw(p, m_coord, text, fontStyle->pointSize(), m_textAlignment);
+        revertStyle(p, states);
+        return;
+    }
+
+    // Scale the font to its correct size.
+    QTransform oldTransform = p->worldTransform();
+    p->scale(1 / m_scale, 1 / m_scale);
+
+    qreal y = 0;
+    bool initial = true;
+    qreal px = m_coord.x() * m_scale;
+    qreal py = m_coord.y() * m_scale;
+    QSizeF scaledSize = m_size * m_scale;
+
+    if (m_type == TEXTAREA) {
+        if (m_textAlignment == Qt::AlignHCenter)
+            px += scaledSize.width() / 2;
+        else if (m_textAlignment == Qt::AlignRight)
+            px += scaledSize.width();
+    }
+
+    QRectF bounds;
+    if (m_size.height() != 0)
+        bounds = QRectF(0, 0, 1, scaledSize.height());
+
+    for (int i = 0; i < m_paragraphs.size(); ++i) {
+        QTextLayout tl(m_paragraphs[i]);
+        QTextOption op = tl.textOption();
+        op.setWrapMode(QTextOption::WrapAtWordBoundaryOrAnywhere);
+        tl.setTextOption(op);
+        tl.setAdditionalFormats(m_formatRanges[i]);
+        tl.beginLayout();
+        forever {
+            QTextLine line = tl.createLine();
+            if (!line.isValid())
+                break;
+
+            if (m_size.width() != 0)
+                line.setLineWidth(scaledSize.width());
+        }
+        tl.endLayout();
+
+        bool endOfBoundsReached = false;
+        for (int i = 0; i < tl.lineCount(); ++i) {
+            QTextLine line = tl.lineAt(i);
+
+            qreal x = 0;
+            if (m_textAlignment == Qt::AlignHCenter)
+                x -= line.naturalTextWidth() / 2;
+            else if (m_textAlignment == Qt::AlignRight)
+                x -= line.naturalTextWidth();
+
+            if (initial && m_type == TEXT)
+                y -= line.ascent();
+            initial = false;
+
+            line.setPosition(QPointF(x, y));
+            if ((m_size.width() != 0 && line.naturalTextWidth() > scaledSize.width())
+                || (m_size.height() != 0 && y + line.height() > scaledSize.height())) {
+                bounds.setHeight(y);
+                endOfBoundsReached = true;
+                break;
+            }
+
+            y += 1.1 * line.height();
+        }
+        tl.draw(p, QPointF(px, py), QVector<QTextLayout::FormatRange>(), bounds);
+
+        if (endOfBoundsReached)
+            break;
+    }
+
+    p->setWorldTransform(oldTransform, false);
+    revertStyle(p, states);
+}
+
+void QSvgText::insertText(const QString &text, WhitespaceMode mode)
+{
+    bool isTSpan = (m_formats.count() == 2);
+    QString newText(text);
+    newText.replace(QLatin1Char('\t'), QLatin1Char(' '));
+    newText.replace(QLatin1Char('\n'), QLatin1Char(' '));
+
+    bool prependSpace = !m_appendSpace && !isTSpan && (mode == Default) && !m_paragraphs.back().isEmpty() && newText.startsWith(QLatin1Char(' '));
+    if (m_appendSpace || prependSpace)
+        m_paragraphs.back().append(QLatin1Char(' '));
+
+    bool appendSpaceNext = (!isTSpan && (mode == Default) && newText.endsWith(QLatin1Char(' ')));
+
+    if (mode == Default) {
+        newText = newText.simplified();
+        if (newText.isEmpty())
+            appendSpaceNext = false;
+    }
+
+    if (!m_formats.isEmpty()) {
+        QTextLayout::FormatRange range;
+        range.start = m_paragraphs.back().length();
+        range.length = newText.length();
+        range.format = m_formats.top();
+        if (m_appendSpace) {
+            Q_ASSERT(!m_formatRanges.back().isEmpty());
+            ++m_formatRanges.back().back().length;
+        } else if (prependSpace) {
+            --range.start;
+            ++range.length;
+        }
+        m_formatRanges.back().append(range);
+    }
+
+    m_appendSpace = appendSpaceNext;
+    m_paragraphs.back() += newText;
+}
+
+void QSvgText::insertFormat(const QTextCharFormat &format)
+{
+    QTextCharFormat mergedFormat = format;
+    if (!m_formats.isEmpty()) {
+        mergedFormat = m_formats.top();
+        mergedFormat.merge(format);
+    }
+    m_formats.push(mergedFormat);
+}
+
+void QSvgText::insertLineBreak()
+{
+    if (m_type == TEXTAREA) {
+        if (m_paragraphs.back().isEmpty())
+            insertText(QLatin1String(" "), Preserve);
+        m_appendSpace = false;
+        m_paragraphs.push_back(QString());
+        m_formatRanges.push_back(QList<QTextLayout::FormatRange>());
+    }
+}
+
+void QSvgText::popFormat()
+{
+    if (m_formats.count() > 1)
+        m_formats.pop();
+}
+
+qreal QSvgText::scale() const
+{
+    return m_scale;
+}
+
+void QSvgText::setScale(qreal scale)
+{
+    m_scale = scale;
+}
+
+const QTextCharFormat &QSvgText::topFormat() const
+{
+    return m_formats.top();
+}
+
+void QSvgText::setTextAlignment(const Qt::Alignment &alignment)
+{
+    m_textAlignment = alignment;
+}
+
+QSvgUse::QSvgUse(const QPointF &start, QSvgNode *parent, QSvgNode *node)
+    : QSvgNode(parent), m_link(node), m_start(start)
+{
+
+}
+
+void QSvgUse::draw(QPainter *p, QSvgExtraStates &states)
+{
+    applyStyle(p, states);
+
+    if (!m_start.isNull()) {
+        p->translate(m_start);
+    }
+    m_link->draw(p, states);
+    if (!m_start.isNull()) {
+        p->translate(-m_start);
+    }
+
+    revertStyle(p, states);
+}
+
+void QSvgVideo::draw(QPainter *p, QSvgExtraStates &states)
+{
+    applyStyle(p, states);
+
+    revertStyle(p, states);
+}
+
+QSvgNode::Type QSvgAnimation::type() const
+{
+    return ANIMATION;
+}
+
+QSvgNode::Type QSvgArc::type() const
+{
+    return ARC;
+}
+
+QSvgNode::Type QSvgCircle::type() const
+{
+    return CIRCLE;
+}
+
+QSvgNode::Type QSvgEllipse::type() const
+{
+    return ELLIPSE;
+}
+
+QSvgNode::Type QSvgImage::type() const
+{
+    return IMAGE;
+}
+
+QSvgNode::Type QSvgLine::type() const
+{
+    return LINE;
+}
+
+QSvgNode::Type QSvgPath::type() const
+{
+    return PATH;
+}
+
+QSvgNode::Type QSvgPolygon::type() const
+{
+    return POLYGON;
+}
+
+QSvgNode::Type QSvgPolyline::type() const
+{
+    return POLYLINE;
+}
+
+QSvgNode::Type QSvgRect::type() const
+{
+    return RECT;
+}
+
+QSvgNode::Type QSvgText::type() const
+{
+    return m_type;
+}
+
+QSvgNode::Type QSvgUse::type() const
+{
+    return USE;
+}
+
+QSvgNode::Type QSvgVideo::type() const
+{
+    return VIDEO;
+}
+
+QRectF QSvgUse::bounds() const
+{
+    if (m_link && m_bounds.isEmpty())  {
+        m_bounds = m_link->bounds();
+        m_bounds = QRectF(m_bounds.x()+m_start.x(),
+                          m_bounds.y()+m_start.y(),
+                          m_bounds.width(),
+                          m_bounds.height());
+
+        return m_bounds;
+    }
+    return m_bounds;
+}
+
+QRectF QSvgUse::transformedBounds(const QTransform &transform) const
+{
+    QRectF bounds;
+    QTransform t = transform;
+
+    if (m_link)  {
+        QSvgTransformStyle *transStyle = m_style.transform;
+        if (transStyle) {
+            t = transStyle->qtransform() * t;
+        }
+        t.translate(m_start.x(), m_start.y());
+
+        bounds = m_link->transformedBounds(t);
+
+        return bounds;
+    }
+    return bounds;
+}
+
+QRectF QSvgPolyline::bounds() const
+{
+    qreal sw = strokeWidth();
+    if (qFuzzyCompare(sw + 1, 1))
+        return m_poly.boundingRect();
+    else {
+        QPainterPath path;
+        path.addPolygon(m_poly);
+        return boundsOnStroke(path, sw);
+    }
+}
+
+QRectF QSvgArc::bounds() const
+{
+    qreal sw = strokeWidth();
+    if (qFuzzyCompare(sw + 1, 1))
+        return m_cachedBounds;
+    else {
+        return boundsOnStroke(cubic, sw);
+    }
+}
+
+QRectF QSvgImage::bounds() const
+{
+    return m_bounds;
+}
+
+QRectF QSvgLine::bounds() const
+{
+    qreal sw = strokeWidth();
+    if (qFuzzyCompare(sw + 1, 1)) {
+        qreal minX = qMin(m_bounds.x1(), m_bounds.x2());
+        qreal minY = qMin(m_bounds.y1(), m_bounds.y2());
+        qreal maxX = qMax(m_bounds.x1(), m_bounds.x2());
+        qreal maxY = qMax(m_bounds.y1(), m_bounds.y2());
+        return QRectF(minX, minY, maxX-minX, maxY-minY);
+    } else {
+        QPainterPath path;
+        path.moveTo(m_bounds.x1(), m_bounds.y1());
+        path.lineTo(m_bounds.x2(), m_bounds.y2());
+        return boundsOnStroke(path, sw);
+    }
+}
+
+QT_END_NAMESPACE
+
+#endif // QT_NO_SVG