KoZoomTool.cpp

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/* This file is part of the KDE project
 *
 * SPDX-FileCopyrightText: 2006-2007 Thomas Zander <zander@kde.org>
 * SPDX-FileCopyrightText: 2006 Thorsten Zachmann <zachmann@kde.org>
 *
 * SPDX-License-Identifier: LGPL-2.0-or-later
 */
 
#include "KoZoomTool.h"
 
#include <QKeyEvent>
 
#include "KoZoomStrategy.h"
#include "KoZoomToolWidget.h"
#include "KoPointerEvent.h"
#include "KoCanvasBase.h"
#include "KoCanvasController.h"
 
#include <FlakeDebug.h>
 
KoZoomTool::KoZoomTool(KoCanvasBase *canvas)
        : KoInteractionTool(canvas)
        , m_controller(nullptr)
        , m_zoomInMode(true)
{
    QPixmap inPixmap, outPixmap;
    inPixmap.load(":/zoom_in_cursor.png");
    outPixmap.load(":/zoom_out_cursor.png");
    m_inCursor = QCursor(inPixmap, 4, 4);
    m_outCursor = QCursor(outPixmap, 4, 4);
}
 
void KoZoomTool::mouseReleaseEvent(KoPointerEvent *event)
{
    KoInteractionTool::mouseReleaseEvent(event);
}
 
void KoZoomTool::mouseMoveEvent(KoPointerEvent *event)
{
    updateCursor(event->modifiers() & Qt::ControlModifier);
 
    KoInteractionTool::mouseMoveEvent(event);
}
 
void KoZoomTool::keyPressEvent(QKeyEvent *event)
{
    event->ignore();
    updateCursor(event->modifiers() & Qt::ControlModifier);
 
    KoInteractionTool::keyPressEvent(event);
}
 
void KoZoomTool::keyReleaseEvent(QKeyEvent *event)
{
    event->ignore();
    updateCursor(event->modifiers() & Qt::ControlModifier);
 
    KoInteractionTool::keyReleaseEvent(event);
}
 
void KoZoomTool::activate(const QSet<KoShape*> &)
{
    updateCursor(false);
}
 
void KoZoomTool::mouseDoubleClickEvent(KoPointerEvent *event)
{
    mousePressEvent(event);
}
 
KoInteractionStrategy *KoZoomTool::createStrategy(KoPointerEvent *event)
{
    KoZoomStrategy *zs = new KoZoomStrategy(this, m_controller, event->point);
    bool shouldZoomIn = m_zoomInMode;
    if (event->button() == Qt::RightButton ||
        event->modifiers() == Qt::ControlModifier) {
        shouldZoomIn = !shouldZoomIn;
    }
 
    if (shouldZoomIn) {
        zs->forceZoomIn();
    } else {
        zs->forceZoomOut();
    }
    return zs;
}
 
QWidget *KoZoomTool::createOptionWidget()
{
    return new KoZoomToolWidget(this);
}
 
void KoZoomTool::setZoomInMode(bool zoomIn)
{
    m_zoomInMode = zoomIn;
    updateCursor(false);
}
 
void KoZoomTool::updateCursor(bool swap)
{
    bool setZoomInCursor = m_zoomInMode;
    if (swap) {
        setZoomInCursor = !setZoomInCursor;
    }
 
    if (setZoomInCursor) {
        useCursor(m_inCursor);
    } else {
        useCursor(m_outCursor);
    }
}