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Diffstat (limited to 'src/svg/qsvgstyle.cpp')
| -rw-r--r-- | src/svg/qsvgstyle.cpp | 820 |
1 files changed, 820 insertions, 0 deletions
diff --git a/src/svg/qsvgstyle.cpp b/src/svg/qsvgstyle.cpp new file mode 100644 index 0000000..389f68f --- /dev/null +++ b/src/svg/qsvgstyle.cpp @@ -0,0 +1,820 @@ +/**************************************************************************** +** +** 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 "qsvgstyle_p.h" + +#ifndef QT_NO_SVG + +#include "qsvgfont_p.h" +#include "qsvggraphics_p.h" +#include "qsvgnode_p.h" +#include "qsvgtinydocument_p.h" + +#include "qpainter.h" +#include "qpair.h" +#include "qcolor.h" +#include "qdebug.h" +#include "qmath.h" +#include "qnumeric.h" + +QT_BEGIN_NAMESPACE + +QSvgExtraStates::QSvgExtraStates() + : fillOpacity(1.0) +{ +} + +QSvgStyleProperty::~QSvgStyleProperty() +{ +} + +QSvgQualityStyle::QSvgQualityStyle(int color) + : m_colorRendering(color) +{ + +} +void QSvgQualityStyle::apply(QPainter *, const QRectF &, QSvgNode *, QSvgExtraStates &) +{ + +} +void QSvgQualityStyle::revert(QPainter *, QSvgExtraStates &) +{ + +} + +QSvgFillStyle::QSvgFillStyle(const QBrush &brush) + : m_fill(brush), m_style(0), m_fillRuleSet(false), m_fillOpacitySet(false) +{ +} + +QSvgFillStyle::QSvgFillStyle(QSvgStyleProperty *style) + : m_style(style), m_fillRuleSet(false), m_fillOpacitySet(false) +{ +} + +void QSvgFillStyle::setFillRule(Qt::FillRule f) +{ + m_fillRuleSet = true; + m_fillRule = f; +} + +void QSvgFillStyle::setFillOpacity(qreal opacity) +{ + m_fillOpacitySet = true; + m_fillOpacity = opacity; +} + +static void recursivelySetFill(QSvgNode *node, Qt::FillRule f) +{ + if (node->type() == QSvgNode::PATH) { + QSvgPath *path = static_cast<QSvgPath*>(node); + path->qpath()->setFillRule(f); + } else if (node->type() == QSvgNode::G) { + QList<QSvgNode*> renderers = static_cast<QSvgG*>(node)->renderers(); + foreach(QSvgNode *n, renderers) { + recursivelySetFill(n, f); + } + } +} +void QSvgFillStyle::apply(QPainter *p, const QRectF &rect, QSvgNode *node, QSvgExtraStates &states) +{ + m_oldFill = p->brush(); + m_oldOpacity = states.fillOpacity; + + if (m_fillRuleSet) { + recursivelySetFill(node, m_fillRule); + m_fillRuleSet = false;//set it only on the first run + } + p->setBrush(m_fill); + if (m_fillOpacitySet) + states.fillOpacity = m_fillOpacity; + if (m_style) + m_style->apply(p, rect, node, states); +} + +void QSvgFillStyle::revert(QPainter *p, QSvgExtraStates &states) +{ + if (m_style) + m_style->revert(p, states); + p->setBrush(m_oldFill); + if (m_fillOpacitySet) + states.fillOpacity = m_oldOpacity; +} + +QSvgViewportFillStyle::QSvgViewportFillStyle(const QBrush &brush) + : m_viewportFill(brush) +{ +} + +void QSvgViewportFillStyle::apply(QPainter *p, const QRectF &, QSvgNode *, QSvgExtraStates &) +{ + m_oldFill = p->brush(); + p->setBrush(m_viewportFill); +} + +void QSvgViewportFillStyle::revert(QPainter *p, QSvgExtraStates &) +{ + p->setBrush(m_oldFill); +} + +QSvgFontStyle::QSvgFontStyle(QSvgFont *font, QSvgTinyDocument *doc) + : m_font(font), m_pointSize(24), m_doc(doc) +{ +} + +QSvgFontStyle::QSvgFontStyle(const QFont &font, QSvgTinyDocument *doc) + : m_font(0), m_pointSize(24), m_doc(doc), m_qfont(font) +{ +} + + +void QSvgFontStyle::setPointSize(qreal size) +{ + m_pointSize = size; +} + +qreal QSvgFontStyle::pointSize() const +{ + return m_pointSize; +} + +void QSvgFontStyle::apply(QPainter *p, const QRectF &, QSvgNode *, QSvgExtraStates &) +{ + if (!m_font) { + m_oldFont = p->font(); + p->setFont(m_qfont); + } +} + +void QSvgFontStyle::revert(QPainter *p, QSvgExtraStates &) +{ + if (!m_font) { + p->setFont(m_oldFont); + } +} + +QSvgStrokeStyle::QSvgStrokeStyle(const QPen &pen) + : m_stroke(pen) +{ +} + +void QSvgStrokeStyle::apply(QPainter *p, const QRectF &, QSvgNode *, QSvgExtraStates &) +{ + m_oldStroke = p->pen(); + p->setPen(m_stroke); +} + +void QSvgStrokeStyle::revert(QPainter *p, QSvgExtraStates &) +{ + p->setPen(m_oldStroke); +} + +QSvgSolidColorStyle::QSvgSolidColorStyle(const QColor &color) + : m_solidColor(color) +{ +} + +void QSvgSolidColorStyle::apply(QPainter *p, const QRectF &, QSvgNode *, QSvgExtraStates &) +{ + m_oldFill = p->brush(); + m_oldStroke = p->pen(); + QBrush b = m_oldFill; + b.setColor(m_solidColor); + p->setBrush(b); + QPen pen = m_oldStroke; + pen.setColor(m_solidColor); + p->setPen(pen); +} + +void QSvgSolidColorStyle::revert(QPainter *p, QSvgExtraStates &) +{ + p->setBrush(m_oldFill); + p->setPen(m_oldStroke); +} + +QSvgGradientStyle::QSvgGradientStyle(QGradient *grad) + : m_gradient(grad) +{ +} + +void QSvgGradientStyle::apply(QPainter *p, const QRectF &/*rect*/, QSvgNode *, QSvgExtraStates &) +{ + if (!m_link.isEmpty()) { + resolveStops(); + } + + m_oldFill = p->brush(); + + //resolving stop colors + if (!m_resolvePoints.isEmpty()) { + QColor color = p->brush().color(); + if (!color.isValid()) + color = p->pen().color(); + QList<qreal>::const_iterator itr = m_resolvePoints.constBegin(); + for (; itr != m_resolvePoints.constEnd(); ++itr) { + //qDebug()<<"resolving "<<(*itr)<<" to "<<color; + m_gradient->setColorAt(*itr, color); + } + } + + // If the gradient is marked as empty, insert transparent black + QGradientStops stops = m_gradient->stops(); + if (stops.size() == 1 && qIsNaN(stops.at(0).first)) + m_gradient->setStops(QGradientStops() << QGradientStop(0.0, QColor(0, 0, 0, 0))); + + QGradient gradient = *m_gradient; + + QBrush brush; + brush = QBrush(gradient); + + if (!m_matrix.isIdentity()) + brush.setMatrix(m_matrix); + + p->setBrush(brush); +} + +void QSvgGradientStyle::revert(QPainter *p, QSvgExtraStates &) +{ + p->setBrush(m_oldFill); +} + + +void QSvgGradientStyle::setMatrix(const QMatrix &mat) +{ + m_matrix = mat; +} + +void QSvgGradientStyle::addResolve(qreal offset) +{ + m_resolvePoints.append(offset); +} + +QSvgTransformStyle::QSvgTransformStyle(const QTransform &trans) + : m_transform(trans) +{ +} + +void QSvgTransformStyle::apply(QPainter *p, const QRectF &, QSvgNode *, QSvgExtraStates &) +{ + m_oldWorldTransform = p->worldTransform(); + p->setWorldTransform(m_transform, true); +} + +void QSvgTransformStyle::revert(QPainter *p, QSvgExtraStates &) +{ + p->setWorldTransform(m_oldWorldTransform, false /* don't combine */); +} + +QSvgStyleProperty::Type QSvgQualityStyle::type() const +{ + return QUALITY; +} + +QSvgStyleProperty::Type QSvgFillStyle::type() const +{ + return FILL; +} + +QSvgStyleProperty::Type QSvgViewportFillStyle::type() const +{ + return VIEWPORT_FILL; +} + +QSvgStyleProperty::Type QSvgFontStyle::type() const +{ + return FONT; +} + +QSvgStyleProperty::Type QSvgStrokeStyle::type() const +{ + return STROKE; +} + +QSvgStyleProperty::Type QSvgSolidColorStyle::type() const +{ + return SOLID_COLOR; +} + +QSvgStyleProperty::Type QSvgGradientStyle::type() const +{ + return GRADIENT; +} + +QSvgStyleProperty::Type QSvgTransformStyle::type() const +{ + return TRANSFORM; +} + + +QSvgCompOpStyle::QSvgCompOpStyle(QPainter::CompositionMode mode) + : m_mode(mode) +{ + +} + +void QSvgCompOpStyle::apply(QPainter *p, const QRectF &, QSvgNode *, QSvgExtraStates &) +{ + m_oldMode = p->compositionMode(); + p->setCompositionMode(m_mode); +} + +void QSvgCompOpStyle::revert(QPainter *p, QSvgExtraStates &) +{ + p->setCompositionMode(m_oldMode); +} + +QSvgStyleProperty::Type QSvgCompOpStyle::type() const +{ + return COMP_OP; +} + +QSvgStyle::~QSvgStyle() +{ +} + +void QSvgStyle::apply(QPainter *p, const QRectF &rect, QSvgNode *node, QSvgExtraStates &states) +{ + if (quality) { + quality->apply(p, rect, node, states); + } + + if (fill) { + fill->apply(p, rect, node, states); + } + + if (viewportFill) { + viewportFill->apply(p, rect, node, states); + } + + if (font) { + font->apply(p, rect, node, states); + } + + if (stroke) { + stroke->apply(p, rect, node, states); + } + + if (solidColor) { + solidColor->apply(p, rect, node, states); + } + + if (gradient) { + gradient->apply(p, rect, node, states); + } + + if (transform) { + transform->apply(p, rect, node, states); + } + + if (animateColor) { + animateColor->apply(p, rect, node, states); + } + + //animated transforms have to be applied + //_after_ the original object transformations + if (!animateTransforms.isEmpty()) { + QList<QSvgRefCounter<QSvgAnimateTransform> >::const_iterator itr; + for (itr = animateTransforms.constBegin(); itr != animateTransforms.constEnd(); + ++itr) { + (*itr)->apply(p, rect, node, states); + } + } + + if (opacity) { + opacity->apply(p, rect, node, states); + } + + if (compop) { + compop->apply(p, rect, node, states); + } +} + +void QSvgStyle::revert(QPainter *p, QSvgExtraStates &states) +{ + if (quality) { + quality->revert(p, states); + } + + if (fill) { + fill->revert(p, states); + } + + if (viewportFill) { + viewportFill->revert(p, states); + } + + if (font) { + font->revert(p, states); + } + + if (stroke) { + stroke->revert(p, states); + } + + if (solidColor) { + solidColor->revert(p, states); + } + + if (gradient) { + gradient->revert(p, states); + } + + //animated transforms need to be reverted _before_ + //the native transforms + if (!animateTransforms.isEmpty()) { + QList<QSvgRefCounter<QSvgAnimateTransform> >::const_iterator itr; + itr = animateTransforms.constBegin(); + //only need to rever the first one because that + //one has the original world matrix for the primitve + if (itr != animateTransforms.constEnd()) { + (*itr)->revert(p, states); + } + } + + if (transform) { + transform->revert(p, states); + } + + if (animateColor) { + animateColor->revert(p, states); + } + + if (opacity) { + opacity->revert(p, states); + } + + if (compop) { + compop->revert(p, states); + } +} + +QSvgAnimateTransform::QSvgAnimateTransform(int startMs, int endMs, int byMs ) + : QSvgStyleProperty(), + m_from(startMs), m_to(endMs), m_by(byMs), + m_type(Empty), m_count(0), m_finished(false) +{ + m_totalRunningTime = m_to - m_from; +} + +void QSvgAnimateTransform::setArgs(TransformType type, const QVector<qreal> &args) +{ + m_type = type; + m_args = args; + Q_ASSERT(!(args.count()%3)); + m_count = args.count() / 3; +} + +void QSvgAnimateTransform::apply(QPainter *p, const QRectF &, QSvgNode *node, QSvgExtraStates &) +{ + m_oldWorldTransform = p->worldTransform(); + resolveMatrix(node); + if (!m_finished || m_freeze) + p->setWorldTransform(m_transform, true); +} + +void QSvgAnimateTransform::revert(QPainter *p, QSvgExtraStates &) +{ + if (!m_finished || m_freeze) { + p->setWorldTransform(m_oldWorldTransform, false /* don't combine */); + } +} + +void QSvgAnimateTransform::resolveMatrix(QSvgNode *node) +{ + static const qreal deg2rad = qreal(0.017453292519943295769); + qreal totalTimeElapsed = node->document()->currentElapsed(); + if (totalTimeElapsed < m_from || m_finished) + return; + + qreal animationFrame = (totalTimeElapsed - m_from) / m_to; + + if (m_repeatCount >= 0 && m_repeatCount < animationFrame) { + m_finished = true; + animationFrame = m_repeatCount; + } + + qreal percentOfAnimation = animationFrame; + if (percentOfAnimation > 1) { + percentOfAnimation -= ((int)percentOfAnimation); + } + + qreal currentPosition = percentOfAnimation * (m_count - 1); + int startElem = qFloor(currentPosition); + int endElem = qCeil(currentPosition); + + switch(m_type) + { + case Translate: { + startElem *= 3; + endElem *= 3; + qreal from1, from2, from3; + qreal to1, to2, to3; + from1 = m_args[startElem++]; + from2 = m_args[startElem++]; + from3 = m_args[startElem++]; + to1 = m_args[endElem++]; + to2 = m_args[endElem++]; + to3 = m_args[endElem++]; + + qreal transXDiff = (to1-from1) * percentOfAnimation; + qreal transX = from1 + transXDiff; + qreal transYDiff = (to2-from2) * percentOfAnimation; + qreal transY = from2 + transYDiff; + m_transform = QTransform(); + m_transform.translate(transX, transY); + break; + } + case Scale: { + startElem *= 3; + endElem *= 3; + qreal from1, from2, from3; + qreal to1, to2, to3; + from1 = m_args[startElem++]; + from2 = m_args[startElem++]; + from3 = m_args[startElem++]; + to1 = m_args[endElem++]; + to2 = m_args[endElem++]; + to3 = m_args[endElem++]; + + qreal transXDiff = (to1-from1) * percentOfAnimation; + qreal transX = from1 + transXDiff; + qreal transYDiff = (to2-from2) * percentOfAnimation; + qreal transY = from2 + transYDiff; + if (transY == 0) + transY = transX; + m_transform = QTransform(); + m_transform.scale(transX, transY); + break; + } + case Rotate: { + startElem *= 3; + endElem *= 3; + qreal from1, from2, from3; + qreal to1, to2, to3; + from1 = m_args[startElem++]; + from2 = m_args[startElem++]; + from3 = m_args[startElem++]; + to1 = m_args[endElem++]; + to2 = m_args[endElem++]; + to3 = m_args[endElem++]; + + qreal rotationDiff = (to1 - from1) * percentOfAnimation; + //qreal rotation = from1 + rotationDiff; + + qreal transXDiff = (to2-from2) * percentOfAnimation; + qreal transX = from2 + transXDiff; + qreal transYDiff = (to3-from3) * percentOfAnimation; + qreal transY = from3 + transYDiff; + m_transform = QTransform(); + m_transform.translate(transX, transY); + m_transform.rotate(rotationDiff); + m_transform.translate(-transX, -transY); + break; + } + case SkewX: { + startElem *= 3; + endElem *= 3; + qreal from1, from2, from3; + qreal to1, to2, to3; + from1 = m_args[startElem++]; + from2 = m_args[startElem++]; + from3 = m_args[startElem++]; + to1 = m_args[endElem++]; + to2 = m_args[endElem++]; + to3 = m_args[endElem++]; + + qreal transXDiff = (to1-from1) * percentOfAnimation; + qreal transX = from1 + transXDiff; + m_transform = QTransform(); + m_transform.shear(tan(transX * deg2rad), 0); + break; + } + case SkewY: { + startElem *= 3; + endElem *= 3; + qreal from1, from2, from3; + qreal to1, to2, to3; + from1 = m_args[startElem++]; + from2 = m_args[startElem++]; + from3 = m_args[startElem++]; + to1 = m_args[endElem++]; + to2 = m_args[endElem++]; + to3 = m_args[endElem++]; + + + qreal transYDiff = (to1 - from1) * percentOfAnimation; + qreal transY = from1 + transYDiff; + m_transform = QTransform(); + m_transform.shear(0, tan(transY * deg2rad)); + break; + } + default: + break; + } +} + +QSvgStyleProperty::Type QSvgAnimateTransform::type() const +{ + return ANIMATE_TRANSFORM; +} + +void QSvgAnimateTransform::setFreeze(bool freeze) +{ + m_freeze = freeze; +} + +void QSvgAnimateTransform::setRepeatCount(qreal repeatCount) +{ + m_repeatCount = repeatCount; +} + +QSvgAnimateColor::QSvgAnimateColor(int startMs, int endMs, int byMs) + : QSvgStyleProperty(), + m_from(startMs), m_to(endMs), m_by(byMs), + m_finished(false) +{ + m_totalRunningTime = m_to - m_from; +} + +void QSvgAnimateColor::setArgs(bool fill, + const QList<QColor> &colors) +{ + m_fill = fill; + m_colors = colors; +} + +void QSvgAnimateColor::setFreeze(bool freeze) +{ + m_freeze = freeze; +} + +void QSvgAnimateColor::setRepeatCount(qreal repeatCount) +{ + m_repeatCount = repeatCount; +} + +void QSvgAnimateColor::apply(QPainter *p, const QRectF &, QSvgNode *node, QSvgExtraStates &) +{ + qreal totalTimeElapsed = node->document()->currentElapsed(); + if (totalTimeElapsed < m_from || m_finished) + return; + + qreal animationFrame = (totalTimeElapsed - m_from) / m_to; + + if (m_repeatCount >= 0 && m_repeatCount < animationFrame) { + m_finished = true; + animationFrame = m_repeatCount; + } + + qreal percentOfAnimation = animationFrame; + if (percentOfAnimation > 1) { + percentOfAnimation -= ((int)percentOfAnimation); + } + + qreal currentPosition = percentOfAnimation * (m_colors.count() - 1); + + int startElem = qFloor(currentPosition); + int endElem = qCeil(currentPosition); + QColor start = m_colors[startElem]; + QColor end = m_colors[endElem]; + + qreal percentOfColorMorph = currentPosition; + if (percentOfColorMorph > 1) { + percentOfColorMorph -= ((int)percentOfColorMorph); + } + + // Interpolate between the two fixed colors start and end + qreal aDiff = (end.alpha() - start.alpha()) * percentOfColorMorph; + qreal rDiff = (end.red() - start.red()) * percentOfColorMorph; + qreal gDiff = (end.green() - start.green()) * percentOfColorMorph; + qreal bDiff = (end.blue() - start.blue()) * percentOfColorMorph; + + int alpha = int(start.alpha() + aDiff); + int red = int(start.red() + rDiff); + int green = int(start.green() + gDiff); + int blue = int(start.blue() + bDiff); + + QColor color(red, green, blue, alpha); + + if (m_fill) { + QBrush b = p->brush(); + m_oldBrush = b; + b.setColor(color); + p->setBrush(b); + } else { + QPen pen = p->pen(); + m_oldPen = pen; + pen.setColor(color); + p->setPen(pen); + } +} + +void QSvgAnimateColor::revert(QPainter *p, QSvgExtraStates &) +{ + if (m_fill) { + p->setBrush(m_oldBrush); + } else { + p->setPen(m_oldPen); + } +} + +QSvgStyleProperty::Type QSvgAnimateColor::type() const +{ + return ANIMATE_COLOR; +} + +QString QSvgFontStyle::textAnchor() const +{ + return m_textAnchor; +} + +void QSvgFontStyle::setTextAnchor(const QString &anchor) +{ + m_textAnchor = anchor; +} + +QSvgOpacityStyle::QSvgOpacityStyle(qreal opacity) + : m_opacity(opacity) +{ + +} + +void QSvgOpacityStyle::apply(QPainter *p, const QRectF &, QSvgNode *, QSvgExtraStates &) +{ + m_oldOpacity = p->opacity(); + p->setOpacity(m_opacity * m_oldOpacity); +} + +void QSvgOpacityStyle::revert(QPainter *p, QSvgExtraStates &) +{ + p->setOpacity(m_oldOpacity); +} + +QSvgStyleProperty::Type QSvgOpacityStyle::type() const +{ + return OPACITY; +} + +void QSvgGradientStyle::setStopLink(const QString &link, QSvgTinyDocument *doc) +{ + m_link = link; + m_doc = doc; +} + +void QSvgGradientStyle::resolveStops() +{ + if (!m_link.isEmpty() && m_doc) { + QSvgStyleProperty *prop = m_doc->scopeStyle(m_link); + if (prop) { + if (prop->type() == QSvgStyleProperty::GRADIENT) { + QSvgGradientStyle *st = + static_cast<QSvgGradientStyle*>(prop); + st->resolveStops(); + m_gradient->setStops(st->qgradient()->stops()); + } + } + m_link = QString(); + } +} + +QT_END_NAMESPACE + +#endif // QT_NO_SVG |