view.h Example File

graphicsview/chip/view.h

  /****************************************************************************
  **
  ** Copyright (C) 2015 The Qt Company Ltd.
  ** Contact: http://www.qt.io/licensing/
  **
  ** This file is part of the demonstration applications of the Qt Toolkit.
  **
  ** $QT_BEGIN_LICENSE:LGPL21$
  ** Commercial License Usage
  ** Licensees holding valid commercial Qt licenses may use this file in
  ** accordance with the commercial license agreement provided with the
  ** Software or, alternatively, in accordance with the terms contained in
  ** a written agreement between you and The Qt Company. For licensing terms
  ** and conditions see http://www.qt.io/terms-conditions. For further
  ** information use the contact form at http://www.qt.io/contact-us.
  **
  ** GNU Lesser General Public License Usage
  ** Alternatively, this file may be used under the terms of the GNU Lesser
  ** General Public License version 2.1 or version 3 as published by the Free
  ** Software Foundation and appearing in the file LICENSE.LGPLv21 and
  ** LICENSE.LGPLv3 included in the packaging of this file. Please review the
  ** following information to ensure the GNU Lesser General Public License
  ** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
  ** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
  **
  ** As a special exception, The Qt Company gives you certain additional
  ** rights. These rights are described in The Qt Company LGPL Exception
  ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
  **
  ** $QT_END_LICENSE$
  **
  ****************************************************************************/

  #ifndef VIEW_H
  #define VIEW_H

  #include <QFrame>
  #include <QGraphicsView>

  class QLabel;
  class QSlider;
  class QToolButton;

  class View;

  class GraphicsView : public QGraphicsView
  {
      Q_OBJECT
  public:
      GraphicsView(View *v) : QGraphicsView(), view(v) { }

  protected:
  #ifndef QT_NO_WHEELEVENT
      void wheelEvent(QWheelEvent *) Q_DECL_OVERRIDE;
  #endif

  private:
      View *view;
  };

  class View : public QFrame
  {
      Q_OBJECT
  public:
      explicit View(const QString &name, QWidget *parent = 0);

      QGraphicsView *view() const;

  public slots:
      void zoomIn(int level = 1);
      void zoomOut(int level = 1);

  private slots:
      void resetView();
      void setResetButtonEnabled();
      void setupMatrix();
      void togglePointerMode();
      void toggleOpenGL();
      void toggleAntialiasing();
      void print();
      void rotateLeft();
      void rotateRight();

  private:
      GraphicsView *graphicsView;
      QLabel *label;
      QLabel *label2;
      QToolButton *selectModeButton;
      QToolButton *dragModeButton;
      QToolButton *openGlButton;
      QToolButton *antialiasButton;
      QToolButton *printButton;
      QToolButton *resetButton;
      QSlider *zoomSlider;
      QSlider *rotateSlider;
  };

  #endif // VIEW_H