pathdeform.h Example File | Qt Widgets 5.12.8

- Qt 5.12
- Qt Widgets
- Vector Deformation
- pathdeform.h Example File
- Qt 5.12.8 Reference Documentation

# pathdeform.h Example File

painting/deform/pathdeform.h

     /****************************************************************************
     **
     ** Copyright (C) 2016 The Qt Company Ltd.
     ** Contact: https://www.qt.io/licensing/
     **
     ** This file is part of the demonstration applications of the Qt Toolkit.
     **
     ** $QT_BEGIN_LICENSE:BSD$
     ** 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 https://www.qt.io/terms-conditions. For further
     ** information use the contact form at https://www.qt.io/contact-us.
     **
     ** BSD License Usage
     ** Alternatively, 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.
     **   * Redistributions in binary form must reproduce the above copyright
     **     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.
     **
     **
     ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
     **
     ** $QT_END_LICENSE$
     **
     ****************************************************************************/

     #ifndef PATHDEFORM_H
     #define PATHDEFORM_H

     #include "arthurwidgets.h"

     #include <QBasicTimer>
     #include <QDateTime>
     #include <QPainterPath>

     class PathDeformRenderer : public ArthurFrame
     {
         Q_OBJECT
         Q_PROPERTY(bool animated READ animated WRITE setAnimated)
         Q_PROPERTY(int radius READ radius WRITE setRadius)
         Q_PROPERTY(int fontSize READ fontSize WRITE setFontSize)
         Q_PROPERTY(int intensity READ intensity WRITE setIntensity)
         Q_PROPERTY(QString text READ text WRITE setText)

     public:
         explicit PathDeformRenderer(QWidget *widget, bool smallScreen = false);

         void paint(QPainter *painter) override;

         void mousePressEvent(QMouseEvent *e) override;
         void mouseReleaseEvent(QMouseEvent *e) override;
         void mouseMoveEvent(QMouseEvent *e) override;
         void timerEvent(QTimerEvent *e) override;

         QSize sizeHint() const override { return QSize(600, 500); }

         bool animated() const { return m_animated; }
         int radius() const { return int(m_radius); }
         int fontSize() const { return m_fontSize; }
         int intensity() const { return int(m_intensity); }
         QString text() const { return m_text; }

     public slots:
         void setRadius(int radius);
         void setFontSize(int fontSize) { m_fontSize = fontSize; setText(m_text); }
         void setText(const QString &text);
         void setIntensity(int intensity);

         void setAnimated(bool animated);

     signals:
         void clicked();
     //     void frameRate(double fps);

     private:
         void generateLensPixmap();
         QPainterPath lensDeform(const QPainterPath &source, const QPointF &offset);

         QBasicTimer m_repaintTimer;
     //     QBasicTimer m_fpsTimer;
     //     int m_fpsCounter;
         QTime m_repaintTracker;

         QVector<QPainterPath> m_paths;
         QVector<QPointF> m_advances;
         QRectF m_pathBounds;
         QString m_text;

         QPixmap m_lens_pixmap;
         QImage m_lens_image;

         int m_fontSize;
         bool m_animated;

         qreal m_intensity;
         qreal m_radius;
         QPointF m_pos;
         QPointF m_offset;
         QPointF m_direction;
         QPointF m_mousePress;
         bool m_mouseDrag;
         bool m_smallScreen;
     };

     class PathDeformControls : public QWidget
     {
         Q_OBJECT
     public:
         PathDeformControls(QWidget *parent, PathDeformRenderer* renderer, bool smallScreen);
     signals:
         void okPressed();
         void quitPressed();
     private:
         PathDeformRenderer* m_renderer;
         void layoutForDesktop();
         void layoutForSmallScreen();
     };

     class PathDeformWidget : public QWidget
     {
         Q_OBJECT
     public:
         PathDeformWidget(QWidget *parent, bool smallScreen);
         void setStyle (QStyle * style );

     private:
         PathDeformRenderer *m_renderer;
         PathDeformControls *m_controls;

     private slots:
         void showControls();
         void hideControls();
     };

     #endif // PATHDEFORM_H