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libs/flake KoShapePainter.cpp Go to the documentation of this file. /* This file is part of the KDE project * * Copyright (C) 2007 Jan Hambrecht <jaham@gmx.net> * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public License * along with this library; see the file COPYING.LIB. If not, write to * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, * Boston, MA 02110-1301, USA. */ #include "KoShapePainter.h" #include <KoCanvasBase.h> #include <KoShapeManager.h> #include <KoShapeManagerPaintingStrategy.h> #include <KoZoomHandler.h> #include <KoUnit.h> #include <KoShape.h> #include <KoShapeBorderModel.h> #include <KoShapeGroup.h> #include <KoShapeContainer.h> #include <QtGui/QImage> class SimpleCanvas : public KoCanvasBase { public: SimpleCanvas() : KoCanvasBase(0), m_shapeManager( new KoShapeManager( this ) ) , m_zoomHandler( new KoZoomHandler() ) { } ~SimpleCanvas() { delete m_shapeManager; delete m_zoomHandler; } virtual void gridSize(qreal *horizontal, qreal *vertical) const { if( horizontal ) *horizontal = 0; if( vertical ) *vertical = 0; }; virtual bool snapToGrid() const { return false; } virtual void addCommand(QUndoCommand *command) { Q_UNUSED( command ); }; virtual KoShapeManager *shapeManager() const { return m_shapeManager; }; virtual void updateCanvas(const QRectF& rc) { Q_UNUSED( rc ); }; virtual KoToolProxy * toolProxy() const { return 0; }; virtual const KoViewConverter *viewConverter() const { return m_zoomHandler; } virtual QWidget* canvasWidget() { return 0; }; virtual const QWidget* canvasWidget() const { return 0; } virtual KoUnit unit() const { return KoUnit( KoUnit::Point ); } virtual void updateInputMethodInfo() {}; private: KoShapeManager * m_shapeManager; KoZoomHandler * m_zoomHandler; }; class KoShapePainter::Private { public: Private() : canvas( new SimpleCanvas() ) { } ~Private() { delete canvas; } SimpleCanvas * canvas; }; KoShapePainter::KoShapePainter(KoShapeManagerPaintingStrategy * strategy) : d( new Private() ) { if (strategy) { strategy->setShapeManager(d->canvas->shapeManager()); d->canvas->shapeManager()->setPaintingStrategy(strategy); } } KoShapePainter::~KoShapePainter() { delete d; } void KoShapePainter::setShapes( const QList<KoShape*> &shapes ) { d->canvas->shapeManager()->setShapes(shapes, KoShapeManager::AddWithoutRepaint); } void KoShapePainter::paintShapes( QPainter & painter, KoViewConverter & converter ) { foreach (KoShape *shape, d->canvas->shapeManager()->shapes()) { shape->waitUntilReady(converter, false); } d->canvas->shapeManager()->paint( painter, converter, true ); } void KoShapePainter::paintShapes( QPainter & painter, const QRect & painterRect, const QRectF & documentRect ) { KoZoomHandler zoomHandler; // calculate the painter destination rectangle size in document coordinates QRectF paintBox = zoomHandler.viewToDocument(QRectF(QPointF(), painterRect.size())); // compute the zoom factor based on the bounding rects in document coordinates // so that the content fits into the image qreal zoomW = paintBox.width() / documentRect.width(); qreal zoomH = paintBox.height() / documentRect.height(); qreal zoom = qMin( zoomW, zoomH ); // now set the zoom into the zoom handler used for painting the shape zoomHandler.setZoom( zoom ); painter.save(); // initialize painter painter.setPen( QPen(Qt::NoPen) ); painter.setBrush( Qt::NoBrush ); painter.setRenderHint(QPainter::Antialiasing); painter.setClipRect( painterRect.adjusted(-1,-1,1,1) ); // convert document rectangle to view coordinates QRectF zoomedBound = zoomHandler.documentToView( documentRect ); // calculate offset between painter rectangle and converted document rectangle QPointF offset = QPointF(painterRect.center()) - zoomedBound.center(); // center content in painter rectangle painter.translate( offset.x(), offset.y() ); // finally paint the shapes paintShapes( painter, zoomHandler ); painter.restore(); } bool KoShapePainter::paintShapes( QImage & image ) { if( image.isNull() ) return false; QPainter painter( &image ); paintShapes( painter, image.rect(), contentRect() ); return true; } QRectF KoShapePainter::contentRect() { QRectF bound; foreach(KoShape * shape, d->canvas->shapeManager()->shapes()) { if (! shape->isVisible( true )) continue; if (dynamic_cast<KoShapeGroup*>(shape)) continue; QRectF shapeRect = shape->boundingRect(); if (bound.isEmpty()) bound = shapeRect; else bound = bound.united(shapeRect); } return bound; } libs/flake Skip menu "libs/flake" Main Page Namespace List Class Hierarchy Alphabetical List Class List File List Namespace Members Class Members API Reference Skip menu "API Reference" kdgantt Kexi   KoProperty   flake kplato krita   image   plugins       libbrush       libpaintop   ui kspread   part     scripting libs   flake   kotext   main   pigment   store   musicshape Generated for API Reference by doxygen 1.5.9-20090814 This website is maintained by Adriaan de Groot and Allen Winter. 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