File indexing completed on 2023-10-03 03:08:11

 /*
     SPDX-FileCopyrightText: 2003-2006 Cies Breijs <cies AT kde DOT nl>
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #ifndef _CANVAS_H_
 #define _CANVAS_H_
 
 #include <QGraphicsView>
 
 #include "sprite.h"
 
 
 class Canvas : public QGraphicsView
 {
     Q_OBJECT
 
     public:
         explicit Canvas(QWidget *parent = nullptr);
         ~Canvas() override;
 
         double turtleAngle() { return turtle->angle(); }
         QImage getPicture();
         void saveAsSvg(const QString&, const QString&);
 //      void scene() { return _scene; }
 
     public Q_SLOTS:
         void slotClear();
         void slotGo(double x, double y) { turtle->setPos(x, y); };
         void slotGoX(double x) { turtle->setPos(x, turtle->pos().y()); }
         void slotGoY(double y) { turtle->setPos(turtle->pos().x(), y); }
         void slotForward(double x);
         void slotBackward(double x);
         void slotDirection(double deg) { turtle->setAngle(deg); }
         void slotTurnLeft(double deg)  { turtle->setAngle(turtle->angle() - deg); }
         void slotTurnRight(double deg) { turtle->setAngle(turtle->angle() + deg); }
         void slotCenter();
         void slotPenWidth(double width);
         void slotPenUp()   { pen->setStyle(Qt::NoPen); }
         void slotPenDown() { pen->setStyle(Qt::SolidLine); }
         void slotPenColor(double r, double g, double b);
         void slotCanvasColor(double r, double g, double b);
         void slotCanvasSize(double r, double g);
         void slotSpriteShow() { turtle->show(); }
         void slotSpriteHide() { turtle->hide(); }
         void slotPrint(const QString& text);
         void slotFontType(const QString& family, const QString& extra);
         void slotFontSize(double px) { textFont->setPixelSize((int)px); }
         void slotReset();
         void getDirection(double& value);
         void getX(double& value);
         void getY(double& value);
 
     protected:
         void resizeEvent(QResizeEvent* event) override;
 
     private:
         void initValues();
         QColor rgbDoublesToColor(double r, double g, double b);
         void drawLine(double x1, double y1, double x2, double y2);
         void wheelEvent(QWheelEvent *event) override;
         void scaleView(double scaleFactor);
 
         QGraphicsScene            *_scene;
         QPen                      *pen;
         Sprite                    *turtle;
         QList<QGraphicsLineItem*>  lines;
         QGraphicsLineItem         *line;
         QGraphicsRectItem         *canvasFrame;
         bool                       penWidthIsZero;
         QFont                      *textFont;
         QColor                     textColor;
 };
 
 
 #endif  // _CANVAS_H_