- Qt 5.5
- Qt Widgets
- Diagram Scene Example
- mainwindow.h Example File
- Qt 5.5.1 Reference Documentation

# mainwindow.h Example File

graphicsview/diagramscene/mainwindow.h

    /****************************************************************************
    **
    ** Copyright (C) 2015 The Qt Company Ltd.
    ** Contact: http://www.qt.io/licensing/
    **
    ** This file is part of the examples of the Qt Toolkit.
    **
    ** $QT_BEGIN_LICENSE:BSD$
    ** You may use this file under the terms of the BSD license as follows:
    **
    ** "Redistribution and use in source and binary forms, with or without
    ** modification, are permitted provided that the following conditions are
    ** met:
    **   * Redistributions of source code must retain the above copyright
    **     notice, this list of conditions and the following disclaimer.
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    **     notice, this list of conditions and the following disclaimer in
    **     the documentation and/or other materials provided with the
    **     distribution.
    **   * Neither the name of The Qt Company Ltd nor the names of its
    **     contributors may be used to endorse or promote products derived
    **     from this software without specific prior written permission.
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    **
    ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
    ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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    #ifndef MAINWINDOW_H
    #define MAINWINDOW_H

    #include "diagramitem.h"

    #include <QMainWindow>

    class DiagramScene;

    class QAction;
    class QToolBox;
    class QSpinBox;
    class QComboBox;
    class QFontComboBox;
    class QButtonGroup;
    class QLineEdit;
    class QGraphicsTextItem;
    class QFont;
    class QToolButton;
    class QAbstractButton;
    class QGraphicsView;

    class MainWindow : public QMainWindow
    {
        Q_OBJECT

    public:
       MainWindow();

    private slots:
        void backgroundButtonGroupClicked(QAbstractButton *button);
        void buttonGroupClicked(int id);
        void deleteItem();
        void pointerGroupClicked(int id);
        void bringToFront();
        void sendToBack();
        void itemInserted(DiagramItem *item);
        void textInserted(QGraphicsTextItem *item);
        void currentFontChanged(const QFont &font);
        void fontSizeChanged(const QString &size);
        void sceneScaleChanged(const QString &scale);
        void textColorChanged();
        void itemColorChanged();
        void lineColorChanged();
        void textButtonTriggered();
        void fillButtonTriggered();
        void lineButtonTriggered();
        void handleFontChange();
        void itemSelected(QGraphicsItem *item);
        void about();

    private:
        void createToolBox();
        void createActions();
        void createMenus();
        void createToolbars();
        QWidget *createBackgroundCellWidget(const QString &text,
                                            const QString &image);
        QWidget *createCellWidget(const QString &text,
                                  DiagramItem::DiagramType type);
        QMenu *createColorMenu(const char *slot, QColor defaultColor);
        QIcon createColorToolButtonIcon(const QString &image, QColor color);
        QIcon createColorIcon(QColor color);

        DiagramScene *scene;
        QGraphicsView *view;

        QAction *exitAction;
        QAction *addAction;
        QAction *deleteAction;

        QAction *toFrontAction;
        QAction *sendBackAction;
        QAction *aboutAction;

        QMenu *fileMenu;
        QMenu *itemMenu;
        QMenu *aboutMenu;

        QToolBar *textToolBar;
        QToolBar *editToolBar;
        QToolBar *colorToolBar;
        QToolBar *pointerToolbar;

        QComboBox *sceneScaleCombo;
        QComboBox *itemColorCombo;
        QComboBox *textColorCombo;
        QComboBox *fontSizeCombo;
        QFontComboBox *fontCombo;

        QToolBox *toolBox;
        QButtonGroup *buttonGroup;
        QButtonGroup *pointerTypeGroup;
        QButtonGroup *backgroundButtonGroup;
        QToolButton *fontColorToolButton;
        QToolButton *fillColorToolButton;
        QToolButton *lineColorToolButton;
        QAction *boldAction;
        QAction *underlineAction;
        QAction *italicAction;
        QAction *textAction;
        QAction *fillAction;
        QAction *lineAction;
    };

    #endif // MAINWINDOW_H