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/****************************************************************************
**
** Copyright (C) 2019 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the examples of the Qt Wayland module
**
** $QT_BEGIN_LICENSE:BSD$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** BSD License Usage
** Alternatively, you may use this file under the terms of the BSD license
** as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of The Qt Company Ltd nor the names of its
** contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef COMPOSITOR_H
#define COMPOSITOR_H
#include <QtCore/QPointer>
#include <QtWaylandCompositor/QWaylandCompositor>
#include <QtWaylandCompositor/QWaylandSurface>
#include <QtWaylandCompositor/QWaylandView>
QT_BEGIN_NAMESPACE
class Window;
class QOpenGLTexture;
class QWaylandXdgShell;
class QWaylandXdgSurface;
class QWaylandXdgToplevel;
class View : public QWaylandView
{
Q_OBJECT
public:
explicit View() = default;
QOpenGLTexture *getTexture();
QSize size() const { return surface() ? surface()->size() : QSize(); }
QRect globalGeometry() const { return {globalPosition(), surface()->size()}; }
QPoint globalPosition() const { return m_globalPosition; }
void setGlobalPosition(const QPoint &position);
QPoint mapToLocal(const QPoint &globalPosition) const;
void setAnchorEdges(Qt::Edges edges) { m_anchorEdges = edges; }
void updateAnchoredPosition();
virtual void handleResizeMove(const QPoint &delta);
virtual void handleResizeRelease() {}
signals:
void globalPositionChanged();
void startResize();
void startMove();
private:
QOpenGLTexture *m_texture = nullptr;
QPoint m_globalPosition;
Qt::Edges m_anchorEdges;
QSize m_lastSize;
};
class ToplevelView : public View
{
Q_OBJECT
public:
explicit ToplevelView(QWaylandXdgToplevel *toplevel);
void handleResizeMove(const QPoint &delta) override;
void handleResizeRelease() override;
private:
QWaylandXdgToplevel *m_toplevel = nullptr;
struct Resize {
QSize initialSize;
Qt::Edges edges;
} m_resize;
};
class Compositor : public QWaylandCompositor
{
Q_OBJECT
public:
explicit Compositor() = default;
~Compositor() override;
void create() override;
void setWindow(Window *window) { m_window = window; }
QList<View *> views() const { return m_views; }
View *viewAt(const QPoint &position);
void raise(View *view);
void handleGlInitialized() { create(); }
void handleMousePress(const QPoint &position, Qt::MouseButton button);
void handleMouseRelease(const QPoint &position, Qt::MouseButton button, Qt::MouseButtons buttons);
void handleMouseMove(const QPoint &position);
void handleMouseWheel(Qt::Orientation orientation, int delta);
void handleKeyPress(quint32 nativeScanCode);
void handleKeyRelease(quint32 nativeScanCode);
signals:
void startMove();
private slots:
void handleXdgToplevelCreated(QWaylandXdgToplevel *toplevel, QWaylandXdgSurface *xdgSurface);
void addView(View *view);
void handleViewSurfaceDestroyed();
void triggerRender();
private:
Window *m_window = nullptr;
QWaylandXdgShell *m_xdgShell = nullptr;
QList<View *> m_views; // Sorted by painters algorithm (back to front)
struct Grab {
QPointer<View> view;
enum State { None, Input, Move, Resize };
State state = None;
QPoint startLocalPosition; // in View's coordinate system
QPoint startGlobalPosition;
} m_grab;
};
QT_END_NAMESPACE
#endif // COMPOSITOR_H
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