playmat_preview_widget.h

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#ifndef COCKATRICE_PLAYMAT_PREVIEW_WIDGET_H
#define COCKATRICE_PLAYMAT_PREVIEW_WIDGET_H
 
#include <QFocusEvent>
#include <QPixmap>
#include <QWidget>
#include <libcockatrice/deck_list/deck_list.h>

class PlaymatPreviewWidget : public QWidget
{
    Q_OBJECT
 
public:
    explicit PlaymatPreviewWidget(QWidget *parent = nullptr);
 
    void setPixmap(const QPixmap &pixmap);
    void setParams(const PlaymatParams &params);
    void setAttribution(const QString &attribution);
 
signals:
    void paramsEdited(const PlaymatParams &params);
 
protected:
    void paintEvent(QPaintEvent *event) override;
    void mousePressEvent(QMouseEvent *event) override;
    void mouseMoveEvent(QMouseEvent *event) override;
    void mouseReleaseEvent(QMouseEvent *event) override;
    void wheelEvent(QWheelEvent *event) override;
    void keyPressEvent(QKeyEvent *event) override;
    void focusInEvent(QFocusEvent *event) override;
 
private:
    QRectF activePlayArea() const;    
    qreal samplingWindowSide() const; 
    qreal widgetToSourceScale() const;
    void applyCropDelta(qreal dMarginL, qreal dMarginR, qreal dOffset, qreal zoomFactor);
    bool sameCrop(const PlaymatParams &a, const PlaymatParams &b) const;
    void restoreSnapshot();
 
    QPixmap sourcePixmap;
    PlaymatParams params;
    PlaymatParams paramsAtFocusIn; 
    QString attributionText;
    QPoint lastDragPos; 
};
 
#endif // COCKATRICE_PLAYMAT_PREVIEW_WIDGET_H