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// Copyright (C) 2019 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
#include "window.h"
#include "compositor.h"
#include <QPainter>
#include <QMatrix4x4>
#include <QOpenGLFunctions>
#include <QOpenGLTexture>
#include <QMouseEvent>
Window::Window(Compositor *compositor)
: m_compositor(compositor)
, m_output(new QWaylandOutput(compositor, this))
{
m_output->setSizeFollowsWindow(true);
}
void Window::initializeGL()
{
m_textureBlitter.create();
m_compositor->handleGlInitialized();
}
void Window::paintGL()
{
m_output->frameStarted();
QOpenGLFunctions *functions = context()->functions();
functions->glClearColor(.4f, .7f, .1f, 0.5f);
functions->glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
GLenum currentTarget = GL_TEXTURE_2D;
m_textureBlitter.bind(currentTarget);
functions->glEnable(GL_BLEND);
functions->glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
const auto views = m_compositor->views();
for (View *view : views) {
auto *texture = view->getTexture();
if (!texture)
continue;
if (texture->target() != currentTarget) {
currentTarget = texture->target();
m_textureBlitter.bind(currentTarget);
}
GLuint textureId = texture->textureId();
// Anchored position needs to be updated immediately before rendering or
// position and size might get out of sync.
view->updateAnchoredPosition();
QWaylandSurface *surface = view->surface();
if (surface && surface->hasContent()) {
QOpenGLTextureBlitter::Origin surfaceOrigin =
view->currentBuffer().origin() == QWaylandSurface::OriginTopLeft
? QOpenGLTextureBlitter::OriginTopLeft
: QOpenGLTextureBlitter::OriginBottomLeft;
QMatrix4x4 targetTransform = QOpenGLTextureBlitter::targetTransform(view->globalGeometry(), QRect(QPoint(), size()));
m_textureBlitter.blit(textureId, targetTransform, surfaceOrigin);
}
}
m_textureBlitter.release();
m_output->sendFrameCallbacks();
}
void Window::mousePressEvent(QMouseEvent *event)
{
m_compositor->handleMousePress(event->position().toPoint(), event->button());
}
void Window::mouseReleaseEvent(QMouseEvent *event)
{
m_compositor->handleMouseRelease(event->position().toPoint(), event->button(), event->buttons());
}
void Window::mouseMoveEvent(QMouseEvent *event)
{
m_compositor->handleMouseMove(event->position().toPoint());
}
#if QT_CONFIG(wheelevent)
void Window::wheelEvent(QWheelEvent *event)
{
if (event->angleDelta().x() != 0)
m_compositor->handleMouseWheel(Qt::Horizontal, event->angleDelta().x());
if (event->angleDelta().y() != 0)
m_compositor->handleMouseWheel(Qt::Vertical, event->angleDelta().y());
}
#endif
void Window::keyPressEvent(QKeyEvent *event)
{
m_compositor->handleKeyPress(event->nativeScanCode());
}
void Window::keyReleaseEvent(QKeyEvent *event)
{
m_compositor->handleKeyRelease(event->nativeScanCode());
}