1/****************************************************************************
2**
3** Copyright (C) 2017 The Qt Company Ltd.
4** Contact: https://www.qt.io/licensing/
5**
6** This file is part of the examples of the Qt Wayland module
7**
8** $QT_BEGIN_LICENSE:BSD$
9** Commercial License Usage
10** Licensees holding valid commercial Qt licenses may use this file in
11** accordance with the commercial license agreement provided with the
12** Software or, alternatively, in accordance with the terms contained in
13** a written agreement between you and The Qt Company. For licensing terms
14** and conditions see https://www.qt.io/terms-conditions. For further
15** information use the contact form at https://www.qt.io/contact-us.
16**
17** BSD License Usage
18** Alternatively, you may use this file under the terms of the BSD license
19** as follows:
20**
21** "Redistribution and use in source and binary forms, with or without
22** modification, are permitted provided that the following conditions are
23** met:
24** * Redistributions of source code must retain the above copyright
25** notice, this list of conditions and the following disclaimer.
26** * Redistributions in binary form must reproduce the above copyright
27** notice, this list of conditions and the following disclaimer in
28** the documentation and/or other materials provided with the
29** distribution.
30** * Neither the name of The Qt Company Ltd nor the names of its
31** contributors may be used to endorse or promote products derived
32** from this software without specific prior written permission.
33**
34**
35** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
36** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
37** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
38** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
39** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
40** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
41** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
42** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
43** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
44** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
45** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
46**
47** $QT_END_LICENSE$
48**
49****************************************************************************/
50
51#include "window.h"
52#include "compositor.h"
53
54#include <QPainter>
55#include <QMatrix4x4>
56#include <QOpenGLFunctions>
57#include <QOpenGLTexture>
58#include <QMouseEvent>
59
60Window::Window()
61{
62}
63
64void Window::setCompositor(Compositor *comp) {
65 m_compositor = comp;
66}
67
68void Window::initializeGL()
69{
70 m_textureBlitter.create();
71 emit glReady();
72}
73
74void Window::paintGL()
75{
76 m_compositor->startRender();
77
78 QOpenGLFunctions *functions = context()->functions();
79 functions->glClearColor(red: .4f, green: .7f, blue: .1f, alpha: 0.5f);
80 functions->glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
81
82 GLenum currentTarget = GL_TEXTURE_2D;
83 m_textureBlitter.bind(target: currentTarget);
84 functions->glEnable(GL_BLEND);
85 functions->glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
86
87 const auto views = m_compositor->views();
88 for (View *view : views) {
89 auto texture = view->getTexture();
90 if (!texture)
91 continue;
92 if (texture->target() != currentTarget) {
93 currentTarget = texture->target();
94 m_textureBlitter.bind(target: currentTarget);
95 }
96 GLuint textureId = texture->textureId();
97 QWaylandSurface *surface = view->surface();
98 if (surface && surface->hasContent()) {
99 QSize s = surface->destinationSize();
100 view->initPosition(screenSize: size(), surfaceSize: s);
101 QPointF pos = view->globalPosition();
102 QRectF surfaceGeometry(pos, s);
103 QOpenGLTextureBlitter::Origin surfaceOrigin =
104 view->currentBuffer().origin() == QWaylandSurface::OriginTopLeft
105 ? QOpenGLTextureBlitter::OriginTopLeft
106 : QOpenGLTextureBlitter::OriginBottomLeft;
107 QMatrix4x4 targetTransform = QOpenGLTextureBlitter::targetTransform(target: surfaceGeometry, viewport: QRect(QPoint(), size()));
108 m_textureBlitter.blit(texture: textureId, targetTransform, sourceOrigin: surfaceOrigin);
109 }
110 }
111 m_textureBlitter.release();
112 m_compositor->endRender();
113}
114
115void Window::mousePressEvent(QMouseEvent *event)
116{
117 m_compositor->handleMousePress(position: event->localPos().toPoint(), button: event->button());
118}
119
120void Window::mouseReleaseEvent(QMouseEvent *event)
121{
122 m_compositor->handleMouseRelease(position: event->localPos().toPoint(), button: event->button(), buttons: event->buttons());
123}
124
125void Window::mouseMoveEvent(QMouseEvent *event)
126{
127 m_compositor->handleMouseMove(position: event->localPos().toPoint());
128}
129
130void Window::wheelEvent(QWheelEvent *event)
131{
132 m_compositor->handleMouseWheel(angleDelta: event->angleDelta());
133}
134
135void Window::keyPressEvent(QKeyEvent *e)
136{
137 m_compositor->handleKeyPress(nativeScanCode: e->nativeScanCode());
138}
139
140void Window::keyReleaseEvent(QKeyEvent *e)
141{
142 m_compositor->handleKeyRelease(nativeScanCode: e->nativeScanCode());
143}
144

Provided by KDAB

Privacy Policy
Learn Advanced QML with KDAB
Find out more

source code of qtwayland/examples/wayland/minimal-cpp/window.cpp