Continues migration with DDS, Common

Lts/Common/LtsWidgets/LtsImageCropper/lts_image_cropper.h

@@ -0,0 +1,80 @@
+
+
+
+#pragma once
+
+#include "lts_widgets_export.h"
+#include <QGraphicsView>
+
+namespace LtsWidgets
+{
+
+
+
+class LTSWIDGETS_EXPORT LtsImageCropper : public QGraphicsView
+{
+
+  Q_OBJECT
+
+  Q_PROPERTY(QPixmap  pixMap     READ pixmap     WRITE setPixmap)
+  Q_PROPERTY(double   multiplier READ multiplier WRITE setMultiplier)
+  Q_PROPERTY(double   maxZoom    READ maxZoom    WRITE setMaxZoom)
+
+public:
+  
+
+  LtsImageCropper(QWidget *parent = nullptr, const QSize &size = {} , const QPixmap &pixmap = {});
+  ~LtsImageCropper();
+
+  
+
+  void setPixmap(const QPixmap &pixmap);
+
+  
+
+  void setImage(const QImage &image);
+
+  
+
+  void setMultiplier(double multiplier);
+
+  
+
+  void setMaxZoom(double maxZoom) { m_maxScale = maxZoom; }
+
+  
+
+  QPixmap pixmap() { return grab(); }
+
+  
+
+  QImage  image();
+
+  
+
+  double multiplier() const { return m_multiplier; }
+
+  
+
+  double maxZoom() const { return m_maxScale; }
+
+private:
+  QGraphicsScene      *m_scene = nullptr;
+  QGraphicsPixmapItem *m_pixmapItem = nullptr;
+
+  double m_currentZoom;
+  double m_minScale;
+  double m_maxScale;
+  double m_stepScale;
+  double m_multiplier;
+
+  void calculateScaleStep();
+
+protected:
+  void wheelEvent(QWheelEvent *event) override;
+  void mousePressEvent(QMouseEvent *event) override;
+  void mouseReleaseEvent(QMouseEvent *event) override;
+
+};
+
+}