Qt 5.6 | Qt Widgets | Vector Deformation | pathdeform.h Example File

Qt 5.6.2 Reference Documentation

# pathdeform.h Example File

painting/deform/pathdeform.h

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      ** Contact: http://www.qt.io/licensing/
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      ** $QT_BEGIN_LICENSE:LGPL21$
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      ** Alternatively, this file may be used under the terms of the GNU Lesser
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      #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) Q_DECL_OVERRIDE;

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

          QSize sizeHint() const Q_DECL_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