KoCanvasBase.cpp

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/* This file is part of the KDE project
 
   SPDX-FileCopyrightText: 2006 Thorsten Zachmann <zachmann@kde.org>
 
   SPDX-License-Identifier: LGPL-2.0-or-later
*/
 
#include <QRectF>
#include <QPointer>
#include <QDebug>
 
#include "KoCanvasBase.h"
#include "KoCanvasResourceProvider.h"
#include "KoShapeController.h"
#include "KoCanvasController.h"
#include "KoViewConverter.h"
#include "KoSnapGuide.h"
#include "KoShapeManager.h"
#include "KoToolProxy.h"
#include "KoSelection.h"
#include "KoSelectedShapesProxy.h"
#include <KoColorDisplayRendererInterface.h>
 
class Q_DECL_HIDDEN KoCanvasBase::Private
{
public:
    Private()
        : shapeController(0),
        resourceManager(0),
        isResourceManagerShared(false),
        controller(0),
        snapGuide(0)
    {
    }
 
    ~Private() {
        delete shapeController;
        if (!isResourceManagerShared) {
            delete resourceManager;
        }
        delete snapGuide;
    }
    QPointer<KoShapeController> shapeController;
    QPointer<KoCanvasResourceProvider> resourceManager;
    bool isResourceManagerShared;
    KoCanvasController *controller;
    KoSnapGuide *snapGuide;
};
 
KoCanvasBase::KoCanvasBase(KoShapeControllerBase *shapeController, KoCanvasResourceProvider *sharedResourceManager)
        : d(new Private())
{
    d->resourceManager = sharedResourceManager ?
        sharedResourceManager : new KoCanvasResourceProvider();
    d->isResourceManagerShared = sharedResourceManager;
 
    d->shapeController = new KoShapeController(this, shapeController);
    d->snapGuide = new KoSnapGuide(this);
}
 
KoCanvasBase::~KoCanvasBase()
{
    d->shapeController->reset();
    delete d;
}
 
KoColorDisplayRendererInterface *KoCanvasBase::displayRendererInterface() const
{
    return KoDumbColorDisplayRenderer::instance();
}
 
QPointF KoCanvasBase::viewToDocument(const QPointF &viewPoint) const
{
    return viewConverter()->viewToDocument(viewPoint - documentOrigin());
}
 
KoShapeController *KoCanvasBase::shapeController() const
{
    if (d->shapeController)
        return d->shapeController;
    else
        return 0;
}
 
void KoCanvasBase::disconnectCanvasObserver(QObject *object)
{
    if (shapeManager()) shapeManager()->selection()->disconnect(object);
    if (resourceManager()) resourceManager()->disconnect(object);
    if (shapeManager()) shapeManager()->disconnect(object);
    if (toolProxy()) toolProxy()->disconnect(object);
    if (selectedShapesProxy()) selectedShapesProxy()->disconnect(object);
}
 
 
KoCanvasResourceProvider *KoCanvasBase::resourceManager() const
{
    return d->resourceManager;
}
 
void KoCanvasBase::setCanvasController(KoCanvasController *controller)
{
    d->controller = controller;
}
 
KoCanvasController *KoCanvasBase::canvasController() const
{
    return d->controller;
}
 
void KoCanvasBase::clipToDocument(const KoShape *, QPointF &) const
{
}
 
KoSnapGuide * KoCanvasBase::snapGuide() const
{
    return d->snapGuide;
}