previewitem.h

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/*
    SPDX-FileCopyrightText: 2014 Martin Gräßlin <mgraesslin@kde.org>
 
    SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
*/
#pragma once
 
#include <QPointer>
#include <QQuickPaintedItem>
 
namespace KDecoration2
{
class Decoration;
class DecorationShadow;
class DecorationSettings;
 
namespace Preview
{
class PreviewBridge;
class PreviewClient;
class Settings;
 
class PreviewItem : public QQuickPaintedItem
{
    Q_OBJECT
    Q_PROPERTY(KDecoration2::Decoration *decoration READ decoration NOTIFY decorationChanged)
    Q_PROPERTY(KDecoration2::Preview::PreviewBridge *bridge READ bridge WRITE setBridge NOTIFY bridgeChanged)
    Q_PROPERTY(KDecoration2::Preview::Settings *settings READ settings WRITE setSettings NOTIFY settingsChanged)
    Q_PROPERTY(KDecoration2::Preview::PreviewClient *client READ client)
    Q_PROPERTY(KDecoration2::DecorationShadow *shadow READ shadow NOTIFY shadowChanged)
    Q_PROPERTY(QColor windowColor READ windowColor WRITE setWindowColor NOTIFY windowColorChanged)
    Q_PROPERTY(bool drawBackground READ isDrawingBackground WRITE setDrawingBackground NOTIFY drawingBackgroundChanged)
public:
    PreviewItem(QQuickItem *parent = nullptr);
    ~PreviewItem() override;
    void paint(QPainter *painter) override;
 
    KDecoration2::Decoration *decoration() const;
    void setDecoration(KDecoration2::Decoration *deco);
 
    QColor windowColor() const;
    void setWindowColor(const QColor &color);
 
    bool isDrawingBackground() const;
    void setDrawingBackground(bool set);
 
    PreviewBridge *bridge() const;
    void setBridge(PreviewBridge *bridge);
 
    Settings *settings() const;
    void setSettings(Settings *settings);
 
    PreviewClient *client();
    DecorationShadow *shadow() const;
 
Q_SIGNALS:
    void decorationChanged(KDecoration2::Decoration *deco);
    void windowColorChanged(const QColor &color);
    void drawingBackgroundChanged(bool);
    void bridgeChanged();
    void settingsChanged();
    void shadowChanged();
 
protected:
    void mouseDoubleClickEvent(QMouseEvent *event) override;
    void mouseMoveEvent(QMouseEvent *event) override;
    void mousePressEvent(QMouseEvent *event) override;
    void mouseReleaseEvent(QMouseEvent *event) override;
    void hoverEnterEvent(QHoverEvent *event) override;
    void hoverLeaveEvent(QHoverEvent *event) override;
    void hoverMoveEvent(QHoverEvent *event) override;
    void componentComplete() override;
 
private:
    void paintShadow(QPainter *painter, int &paddingLeft, int &paddingRight, int &paddingTop, int &paddingBottom);
    template <typename E>
    void proxyPassEvent(E *event) const;
    void syncSize();
    void createDecoration();
    Decoration *m_decoration;
    QColor m_windowColor;
    bool m_drawBackground = true;
    QPointer<KDecoration2::Preview::PreviewBridge> m_bridge;
    QPointer<KDecoration2::Preview::Settings> m_settings;
    QPointer<KDecoration2::Preview::PreviewClient> m_client;
};
 
} // Preview
} // KDecoration2