qpixeltool.h

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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
 
#ifndef QPIXELTOOL_H
#define QPIXELTOOL_H
 
#include <qwidget.h>
#include <qpixmap.h>
 
QT_BEGIN_NAMESPACE
 
class QPixelTool : public QWidget
{
    Q_OBJECT
public:
    explicit QPixelTool(QWidget *parent = nullptr);
    ~QPixelTool();
 
    void setPreviewImage(const QImage &image);
 
    QSize sizeHint() const override;
 
public slots:
    void setZoom(int zoom);
    void setGridSize(int gridSize);
    void toggleGrid();
    void toggleFreeze();
    void setZoomVisible(bool visible);
#if QT_CONFIG(clipboard)
    void copyToClipboard();
    void copyColorToClipboard();
    void copyScreenShotToClipboard();
    void copyScreenInfoToClipboard();
#endif
    void saveToFile();
    void increaseGridSize() { setGridSize(m_gridSize + 1); }
    void decreaseGridSize() { setGridSize(m_gridSize - 1); }
    void increaseZoom();
    void decreaseZoom();
    void aboutPixelTool();
 
protected:
    void timerEvent(QTimerEvent *event) override;
    void paintEvent(QPaintEvent *event) override;
    void keyPressEvent(QKeyEvent *event) override;
    void keyReleaseEvent(QKeyEvent *event) override;
    void resizeEvent(QResizeEvent *event) override;
    void mouseMoveEvent(QMouseEvent *event) override;
    void mousePressEvent(QMouseEvent *event) override;
    void mouseReleaseEvent(QMouseEvent *event) override;
    void contextMenuEvent(QContextMenuEvent *event) override;
 
private:
    void grabScreen();
    void startZoomVisibleTimer();
    void startGridSizeVisibleTimer();
    QString aboutText() const;
 
    bool m_freeze = false;
    bool m_displayZoom = false;
    bool m_displayGridSize = false;
    bool m_mouseDown = false;
    bool m_autoUpdate;
    bool m_preview_mode = false;
 
    int m_gridActive;
    int m_zoom;
    int m_gridSize;
    int m_lcdMode;
 
    int m_updateId = 0;
    int m_displayZoomId = 0;
    int m_displayGridSizeId = 0;
 
    QRgb m_currentColor = 0;
 
    QPoint m_lastMousePos;
    QPoint m_dragStart;
    QPoint m_dragCurrent;
    QPixmap m_buffer;
 
    QSize m_initialSize;
 
    QImage m_preview_image;
};
 
QT_END_NAMESPACE
 
#endif // QPIXELTOOL_H