window.h Example File

qwindow-compositor/window.h
/**************************************************************************** ** ** Copyright (C) 2017 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 COMPOSITORWINDOW_H #define COMPOSITORWINDOW_H #include <QOpenGLWindow> #include <QPointer> #include <QOpenGLTextureBlitter> class Compositor; class View; class QOpenGLTexture; class Window : public QOpenGLWindow { public: Window(); void setCompositor(Compositor *comp); protected: void initializeGL() override; void paintGL() override; void mousePressEvent(QMouseEvent *e) override; void mouseReleaseEvent(QMouseEvent *e) override; void mouseMoveEvent(QMouseEvent *e) override; void keyPressEvent(QKeyEvent *e) override; void keyReleaseEvent(QKeyEvent *e) override; private slots: void startMove(); void startResize(int edge, bool anchored); void startDrag(View *dragIcon); private: enum GrabState { NoGrab, MoveGrab, ResizeGrab, DragGrab }; View *viewAt(const QPointF &point); bool mouseGrab() const { return m_grabState != NoGrab ;} void drawBackground(); void sendMouseEvent(QMouseEvent *e, View *target); static QPointF getAnchoredPosition(const QPointF &anchorPosition, int resizeEdge, const QSize &windowSize); static QPointF getAnchorPosition(const QPointF &position, int resizeEdge, const QSize &windowSize); QOpenGLTextureBlitter m_textureBlitter; QSize m_backgroundImageSize; QOpenGLTexture *m_backgroundTexture; Compositor *m_compositor; QPointer<View> m_mouseView; GrabState m_grabState; QSize m_initialSize; int m_resizeEdge; bool m_resizeAnchored; QPointF m_resizeAnchorPosition; QPointF m_mouseOffset; QPointF m_initialMousePos; View *m_dragIconView; }; #endif // COMPOSITORWINDOW_H