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50
51#ifndef COMPOSITORWINDOW_H
52#define COMPOSITORWINDOW_H
53
54#include <QOpenGLWindow>
55#include <QPointer>
56#include <QOpenGLTextureBlitter>
57
58QT_BEGIN_NAMESPACE
59
60class Compositor;
61class View;
62class QOpenGLTexture;
63
64class Window : public QOpenGLWindow
65{
66public:
67 Window();
68
69 void setCompositor(Compositor *comp);
70
71protected:
72 void initializeGL() override;
73 void paintGL() override;
74
75 void mousePressEvent(QMouseEvent *e) override;
76 void mouseReleaseEvent(QMouseEvent *e) override;
77 void mouseMoveEvent(QMouseEvent *e) override;
78
79 void keyPressEvent(QKeyEvent *e) override;
80 void keyReleaseEvent(QKeyEvent *e) override;
81
82private slots:
83 void startMove();
84 void startResize(int edge, bool anchored);
85 void startDrag(View *dragIcon);
86
87private:
88 enum GrabState { NoGrab, MoveGrab, ResizeGrab, DragGrab };
89
90 View *viewAt(const QPointF &point);
91 bool mouseGrab() const { return m_grabState != NoGrab ;}
92 void drawBackground();
93 void sendMouseEvent(QMouseEvent *e, View *target);
94 static QPointF getAnchoredPosition(const QPointF &anchorPosition, int resizeEdge, const QSize &windowSize);
95 static QPointF getAnchorPosition(const QPointF &position, int resizeEdge, const QSize &windowSize);
96
97 QOpenGLTextureBlitter m_textureBlitter;
98 QSize m_backgroundImageSize;
99 QOpenGLTexture *m_backgroundTexture = nullptr;
100 Compositor *m_compositor = nullptr;
101 QPointer<View> m_mouseView;
102 GrabState m_grabState = NoGrab;
103 QSize m_initialSize;
104 int m_resizeEdge;
105 bool m_resizeAnchored;
106 QPointF m_resizeAnchorPosition;
107 QPointF m_mouseOffset;
108 QPointF m_initialMousePos;
109 View *m_dragIconView = nullptr;
110};
111
112QT_END_NAMESPACE
113
114#endif // COMPOSITORWINDOW_H
115

source code of qtwayland/examples/wayland/qwindow-compositor/window.h