calligra/gemini/ScribbleArea.h

0001 /* This file is part of the KDE project
0002  * SPDX-FileCopyrightText: 2014 Dan Leinir Turthra Jensen <admin@leinir.dk>
0003  *
0004  * SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
0005  *
0006  */
0007
0008 #ifndef SCRIBBLEAREA_H
0009 #define SCRIBBLEAREA_H
0010
0011 #include <QQuickPaintedItem>
0012 #include <QImage>
0013
0014 class ScribbleArea : public QQuickPaintedItem
0015 {
0016     Q_OBJECT
0017     Q_PROPERTY(QColor color READ color WRITE setColor NOTIFY colorChanged)
0018     Q_PROPERTY(int penWidth READ penWidth WRITE setPenWidth NOTIFY penWidthChanged)
0019
0020 public:
0021     explicit ScribbleArea(QQuickItem* parent = 0);
0022     ~ScribbleArea() override;
0023
0024     Q_INVOKABLE void clear();
0025
0026     QColor color() const;
0027     void setColor(const QColor& newColor);
0028
0029     int penWidth() const;
0030     void setPenWidth(const int& newWidth);
0031
0032 Q_SIGNALS:
0033     void colorChanged();
0034     void penWidthChanged();
0035     void paintingStopped();
0036     void paintingStarted();
0037
0038 protected:
0039     bool event(QEvent* event) override;
0040     void mousePressEvent(QMouseEvent *event) override;
0041     void mouseMoveEvent(QMouseEvent *event) override;
0042     void mouseReleaseEvent(QMouseEvent *event) override;
0043     void paint(QPainter* painter) override;
0044
0045 private:
0046     void drawLineTo(const QPointF &endPoint);
0047     void resizeImage(QImage *image, const QSize &newSize);
0048
0049     bool scribbling;
0050     int myPenWidth;
0051     QColor myPenColor;
0052     QImage image;
0053     QPointF lastPoint;
0054 };
0055
0056 #endif // SCRIBBLEAREA_H