ContentType now is simply a bool and related methods now are containsMultipleImages() and setContainsMultipleImages() svn path=/trunk/KDE/kdebase/workspace/libs/plasma/; revision=797998
471 lines
13 KiB
C++
471 lines
13 KiB
C++
/*
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* Copyright 2006-2007 Aaron Seigo <aseigo@kde.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Library General Public License as
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* published by the Free Software Foundation; either version 2, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include "svg.h"
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#include <QDir>
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#include <QMatrix>
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#include <QPainter>
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#include <QPixmapCache>
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#include <QSharedData>
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#include <KDebug>
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#include <KSharedPtr>
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#include <KSvgRenderer>
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#include <KColorScheme>
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#include <KIconEffect>
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#include <KGlobalSettings>
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#include "theme.h"
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/* If you set SVG_CACHE_BUGFIX to 1 you'll fix the cache bug that makes
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SVG painting *VERY slow* but you'll break something somewhere.
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*/
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#define SVG_CACHE_BUGFIX 0
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namespace Plasma
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{
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class SharedSvgRenderer : public KSvgRenderer, public QSharedData
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{
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public:
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typedef KSharedPtr<SharedSvgRenderer> Ptr;
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SharedSvgRenderer(QObject *parent = 0)
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: KSvgRenderer(parent)
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{}
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SharedSvgRenderer(const QString &filename, QObject *parent = 0)
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: KSvgRenderer(filename, parent)
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{}
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SharedSvgRenderer(const QByteArray &contents, QObject *parent = 0)
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: KSvgRenderer(contents, parent)
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{}
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~SharedSvgRenderer()
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{
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//kDebug() << "leaving this world for a better one.";
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}
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};
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class Svg::Private
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{
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public:
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Private(const QString& imagePath, Svg *svg)
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: q(svg),
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renderer(0),
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multipleImages(false),
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themed(false)
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{
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setImagePath(imagePath, q);
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}
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~Private()
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{
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eraseRenderer();
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}
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void setImagePath(const QString &imagePath, Svg *q)
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{
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if (themed) {
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disconnect(Plasma::Theme::self(), SIGNAL(changed()), q, SLOT(themeChanged()));
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disconnect(KGlobalSettings::self(), SIGNAL(kdisplayPaletteChanged()), q, SLOT(colorsChanged()));
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}
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themed = !QDir::isAbsolutePath(imagePath);
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path = themePath = QString();
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if (themed) {
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themePath = imagePath;
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connect(Plasma::Theme::self(), SIGNAL(changed()), q, SLOT(themeChanged()));
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// check if svg wants colorscheme applied
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createRenderer();
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applyColors = renderer->elementExists("hint-apply-color-scheme");
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if (applyColors && !Theme::self()->colorScheme()) {
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connect(KGlobalSettings::self(), SIGNAL(kdisplayPaletteChanged()), q, SLOT(colorsChanged()));
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}
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} else {
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path = imagePath;
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if (!QFile::exists(path)) {
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kDebug() << "Plasma::Svg: file '" << path << "' does not exist!";
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}
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}
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}
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void removeFromCache() {
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if (ids.isEmpty()) {
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return;
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}
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foreach (const QString &id, ids) {
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QPixmapCache::remove(id);
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}
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ids.clear();
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}
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void findInCache(QPixmap& p, const QString& elementId, const QPainter *itemPainter, const QSizeF &size = QSizeF())
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{
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#if SVG_CACHE_BUGFIX
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QSizeF localSize;
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if (elementId.isEmpty() || multipleImages) {
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localSize = size;
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} else {
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localSize = elementSize(elementId);
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}
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if (localSize.isEmpty())
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return;
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QTransform transform = itemPainter->worldTransform();
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if (size.isValid()) {
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transform.scale(size.width() / localSize.width(),
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size.height() / localSize.height());
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}
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#endif
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createRenderer();
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#if SVG_CACHE_BUGFIX
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QLineF v1 = transform.map(QLineF(0, 0, 1, 0));
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QLineF v2 = transform.map(QLineF(0, 0, 0, 1));
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QString id = QString::fromLatin1("%7_%6_%5_%4_%3_%2_%1").arg(size.width())
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.arg(size.height())
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.arg((int) v1.dx())
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.arg((int) v1.dy())
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.arg((int) v2.dx())
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.arg((int) v2.dy())
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.arg(path);
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#else
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QString id = QString::fromLatin1("%3_%2_%1_").arg(size.width())
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.arg(size.height())
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.arg(path);
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#endif
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if (!elementId.isEmpty()) {
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id.append(elementId);
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}
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//kDebug() << "id is " << id;
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if (!ids.contains(id)) {
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ids.append(id);
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}
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if (QPixmapCache::find(id, p)) {
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//kDebug() << "found cached version of " << id;
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return;
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} else {
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//kDebug() << "didn't find cached version of " << id << ", so re-rendering";
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}
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#if !SVG_CACHE_BUGFIX
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// we have to re-render this puppy
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QSize s;
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if (elementId.isEmpty() || multipleImages) {
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s = size.toSize();
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} else {
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s = elementSize(elementId);
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}
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//kDebug() << "size for " << elementId << " is " << s;
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#endif
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#if SVG_CACHE_BUGFIX
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QRect deviceRect = transform.mapRect(QRectF(QPointF(), localSize)).toRect();
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if (deviceRect.isEmpty())
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return;
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p = QPixmap(deviceRect.size());
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#else
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p = QPixmap(s);
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#endif
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p.fill(Qt::transparent);
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QPainter renderPainter(&p);
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#if SVG_CACHE_BUGFIX
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QPointF tl = deviceRect.topLeft();
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QTransform xform = QTransform().translate(-tl.x(), -tl.y());
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xform = itemPainter->worldTransform() * xform;
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renderPainter.setRenderHints(renderPainter.renderHints(), false);
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renderPainter.setRenderHints(itemPainter->renderHints(), true);
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renderPainter.setWorldTransform(xform, true);
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#endif
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if (elementId.isEmpty()) {
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renderer->render(&renderPainter);
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} else {
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renderer->render(&renderPainter, elementId);
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}
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renderPainter.end();
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// Apply current color scheme if the svg asks for it
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if (applyColors) {
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QImage itmp = p.toImage();
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KIconEffect::colorize(itmp, Theme::self()->backgroundColor(), 1.0);
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p = p.fromImage(itmp);
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}
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if (!QPixmapCache::insert( id, p )) {
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//kDebug() << "pixmap cache is too small for inserting" << id << "of size" << s;
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}
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}
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void createRenderer()
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{
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if (renderer) {
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return;
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}
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if (themed && path.isEmpty()) {
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path = Plasma::Theme::self()->imagePath(themePath);
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}
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QHash<QString, SharedSvgRenderer::Ptr>::const_iterator it = renderers.find(path);
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if (it != renderers.end()) {
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//kDebug() << "gots us an existing one!";
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renderer = it.value();
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} else {
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renderer = new SharedSvgRenderer(path);
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renderers[path] = renderer;
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}
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size = renderer->defaultSize();
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}
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void eraseRenderer()
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{
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if (renderer.count() == 2) {
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// this and the cache reference it; and boy is this not thread safe ;)
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renderers.erase(renderers.find(themePath));
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}
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renderer = 0;
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}
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QSize elementSize(const QString& elementId)
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{
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createRenderer();
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QSizeF elementSize = renderer->boundsOnElement(elementId).size();
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QSizeF naturalSize = renderer->defaultSize();
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qreal dx = size.width() / naturalSize.width();
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qreal dy = size.height() / naturalSize.height();
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elementSize.scale(elementSize.width() * dx, elementSize.height() * dy, Qt::IgnoreAspectRatio);
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return elementSize.toSize();
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}
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QRectF elementRect(const QString& elementId)
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{
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createRenderer();
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QRectF elementRect = renderer->boundsOnElement(elementId);
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QSizeF naturalSize = renderer->defaultSize();
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qreal dx = size.width() / naturalSize.width();
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qreal dy = size.height() / naturalSize.height();
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return QRectF(elementRect.x() * dx, elementRect.y() * dy,
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elementRect.width() * dx, elementRect.height() * dy);
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}
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QMatrix matrixForElement(const QString& elementId)
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{
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createRenderer();
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return renderer->matrixForElement(elementId);
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}
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void themeChanged()
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{
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if (!themed) {
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return;
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}
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QString newPath = Theme::self()->imagePath(themePath);
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if (path == newPath) {
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return;
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}
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removeFromCache();
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path = newPath;
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//delete d->renderer; we're a KSharedPtr
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eraseRenderer();
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emit q->repaintNeeded();
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}
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void colorsChanged()
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{
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if (!applyColors) {
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return;
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}
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removeFromCache();
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eraseRenderer();
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emit q->repaintNeeded();
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}
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Svg *q;
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static QHash<QString, SharedSvgRenderer::Ptr> renderers;
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SharedSvgRenderer::Ptr renderer;
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QString themePath;
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QString path;
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QList<QString> ids;
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QSizeF size;
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bool multipleImages;
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bool themed;
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bool applyColors;
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};
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QHash<QString, SharedSvgRenderer::Ptr> Svg::Private::renderers;
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Svg::Svg(const QString& imagePath, QObject* parent)
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: QObject(parent),
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d(new Private(imagePath, this))
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{
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}
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Svg::~Svg()
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{
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delete d;
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}
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void Svg::paint(QPainter* painter, const QPointF& point, const QString& elementID)
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{
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QPixmap pix;
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d->findInCache(pix, elementID, painter);
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#if SVG_CACHE_BUGFIX
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if (pix.isNull())
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return;
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painter->save();
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QTransform x = painter->worldTransform();
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painter->setWorldTransform(QTransform(), false);
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//kDebug() << "pix size is " << pix.size();
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painter->drawPixmap(x.map(point), pix);
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painter->restore();
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#else
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painter->drawPixmap(QRectF(point, pix.size()), pix, QRectF(QPointF(0,0), pix.size()));
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#endif
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}
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void Svg::paint(QPainter* painter, int x, int y, const QString& elementID)
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{
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paint(painter, QPointF(x, y), elementID);
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}
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void Svg::paint(QPainter* painter, const QRectF& rect, const QString& elementID)
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{
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QPixmap pix;
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d->findInCache(pix, elementID, painter, rect.size());
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#if SVG_CACHE_BUGFIX
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if (pix.isNull())
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return;
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painter->save();
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QTransform x = painter->worldTransform();
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painter->setWorldTransform(QTransform());
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painter->drawPixmap(x.map(rect.topLeft()) , pix);
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painter->restore();
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#else
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painter->drawPixmap(rect, pix, QRectF(QPointF(0,0), pix.size()));
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#endif
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}
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QSize Svg::size() const
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{
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return d->size.toSize();
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}
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void Svg::resize( qreal width, qreal height )
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{
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resize( QSize( width, height ) );
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}
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void Svg::resize( const QSizeF& size )
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{
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d->createRenderer();
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d->size = size;
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}
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void Svg::resize()
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{
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d->createRenderer();
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d->size = d->renderer->defaultSize();
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}
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QSize Svg::elementSize(const QString& elementId) const
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{
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return d->elementSize(elementId);
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}
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QRectF Svg::elementRect(const QString& elementId) const
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{
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return d->elementRect(elementId);
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}
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bool Svg::hasElement(const QString& elementId) const
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{
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d->createRenderer();
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return d->renderer->elementExists(elementId);
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}
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QString Svg::elementAtPoint(const QPoint &point) const
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{
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d->createRenderer();
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QSizeF naturalSize = d->renderer->defaultSize();
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qreal dx = d->size.width() / naturalSize.width();
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qreal dy = d->size.height() / naturalSize.height();
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//kDebug() << point << "is really" << QPoint(point.x() *dx, naturalSize.height() - point.y() * dy);
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return QString(); // d->renderer->elementAtPoint(QPoint(point.x() *dx, naturalSize.height() - point.y() * dy));
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}
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bool Svg::isValid() const
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{
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d->createRenderer();
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return d->renderer->isValid();
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}
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void Svg::setContainsMultipleImages(bool multiple)
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{
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d->multipleImages = multiple;
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}
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bool Svg::containsMultipleImages() const
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{
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return d->multipleImages;
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}
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void Svg::setImagePath(const QString &svgFilePath)
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{
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d->setImagePath(svgFilePath, this);
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d->eraseRenderer();
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}
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QString Svg::imagePath() const
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{
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return d->themed ? d->themePath : d->path;
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}
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} // Plasma namespace
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#include "svg.moc"
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