File indexing completed on 2022-12-06 18:59:47

0001 /*
0002     SPDX-FileCopyrightText: 2003-2006 Cies Breijs <cies AT kde DOT nl>
0003 
0004     SPDX-License-Identifier: GPL-2.0-or-later
0005 */
0006 
0007 #ifndef _CANVAS_H_
0008 #define _CANVAS_H_
0009 
0010 #include <QGraphicsView>
0011 
0012 #include "sprite.h"
0013 
0014 
0015 class Canvas : public QGraphicsView
0016 {
0017     Q_OBJECT
0018 
0019     public:
0020         explicit Canvas(QWidget *parent = nullptr);
0021         ~Canvas() override;
0022 
0023         double turtleAngle() { return turtle->angle(); }
0024         QImage getPicture();
0025         void saveAsSvg(const QString&, const QString&);
0026 //      void scene() { return _scene; }
0027 
0028     public Q_SLOTS:
0029         void slotClear();
0030         void slotGo(double x, double y) { turtle->setPos(x, y); };
0031         void slotGoX(double x) { turtle->setPos(x, turtle->pos().y()); }
0032         void slotGoY(double y) { turtle->setPos(turtle->pos().x(), y); }
0033         void slotForward(double x);
0034         void slotBackward(double x);
0035         void slotDirection(double deg) { turtle->setAngle(deg); }
0036         void slotTurnLeft(double deg)  { turtle->setAngle(turtle->angle() - deg); }
0037         void slotTurnRight(double deg) { turtle->setAngle(turtle->angle() + deg); }
0038         void slotCenter();
0039         void slotPenWidth(double width);
0040         void slotPenUp()   { pen->setStyle(Qt::NoPen); }
0041         void slotPenDown() { pen->setStyle(Qt::SolidLine); }
0042         void slotPenColor(double r, double g, double b);
0043         void slotCanvasColor(double r, double g, double b);
0044         void slotCanvasSize(double r, double g);
0045         void slotSpriteShow() { turtle->show(); }
0046         void slotSpriteHide() { turtle->hide(); }
0047         void slotPrint(const QString& text);
0048         void slotFontType(const QString& family, const QString& extra);
0049         void slotFontSize(double px) { textFont->setPixelSize((int)px); }
0050         void slotReset();
0051         void getDirection(double& value);
0052         void getX(double& value);
0053         void getY(double& value);
0054 
0055     protected:
0056         void resizeEvent(QResizeEvent* event) override;
0057 
0058     private:
0059         void initValues();
0060         QColor rgbDoublesToColor(double r, double g, double b);
0061         void drawLine(double x1, double y1, double x2, double y2);
0062         void wheelEvent(QWheelEvent *event) override;
0063         void scaleView(double scaleFactor);
0064 
0065         QGraphicsScene            *_scene;
0066         QPen                      *pen;
0067         Sprite                    *turtle;
0068         QList<QGraphicsLineItem*>  lines;
0069         QGraphicsLineItem         *line;
0070         QGraphicsRectItem         *canvasFrame;
0071         bool                       penWidthIsZero;
0072         QFont                      *textFont;
0073         QColor                     textColor;
0074 };
0075 
0076 
0077 #endif  // _CANVAS_H_