imageviewer.h

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/*************************************************************************
 * Copyright (c) 2011 AT&T Intellectual Property
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors: Details at https://graphviz.org
 *************************************************************************/
 
#pragma once
 
#define QT_NO_PRINTER 1
 
#include <QtWidgets>
#include <QMainWindow>
#include <QPrinter>
 
QT_BEGIN_NAMESPACE
class QAction;
class QLabel;
class QMenu;
class QScrollArea;
class QScrollBar;
class MdiChild;
QT_END_NAMESPACE
 
class ImageViewer : public QMainWindow
{
    Q_OBJECT
 
public:
    ImageViewer();
    MdiChild* graphWindow;
    QMdiSubWindow* subWindowRef; //reference to its wrapping sub window
public slots:
    bool open(const QString &fileName);
    void print();
    void zoomIn();
    void zoomOut();
    void normalSize();
    void fitToWindow();
    void about();
 
 
private slots:
 
private:
    void createActions();
    void createMenus();
    void updateActions();
    void scaleImage(double factor);
    void adjustScrollBar(QScrollBar *scrollBar, double factor);
 
    QLabel *imageLabel;
    QScrollArea *scrollArea;
    double scaleFactor;
 
#ifndef QT_NO_PRINTER
    QPrinter printer;
#endif
 
    QAction *openAct;
    QAction *printAct;
    QAction *exitAct;
    QAction *zoomInAct;
    QAction *zoomOutAct;
    QAction *normalSizeAct;
    QAction *fitToWindowAct;
    QAction *aboutAct;
    QAction *aboutQtAct;
 
    QMenu *viewMenu;
        protected:
        void closeEvent(QCloseEvent *event);
 
};