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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the plugins of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qwaylandeglwindow.h"
#include <QtWaylandClient/private/qwaylandscreen_p.h>
#include "qwaylandglcontext.h"
#include <QtEglSupport/private/qeglconvenience_p.h>
#include <QDebug>
#include <QtGui/QWindow>
#include <qpa/qwindowsysteminterface.h>
#include <QOpenGLFramebufferObject>
#include <QOpenGLContext>
QT_BEGIN_NAMESPACE
namespace QtWaylandClient {
QWaylandEglWindow::QWaylandEglWindow(QWindow *window)
: QWaylandWindow(window)
, m_clientBufferIntegration(static_cast<QWaylandEglClientBufferIntegration *>(mDisplay->clientBufferIntegration()))
{
QSurfaceFormat fmt = window->requestedFormat();
if (mDisplay->supportsWindowDecoration())
fmt.setAlphaBufferSize(8);
m_eglConfig = q_configFromGLFormat(m_clientBufferIntegration->eglDisplay(), fmt);
m_format = q_glFormatFromConfig(m_clientBufferIntegration->eglDisplay(), m_eglConfig, fmt);
// Do not create anything from here. This platform window may belong to a
// RasterGLSurface window which may have pure raster content. In this case, where the
// window is never actually made current, creating a wl_egl_window and EGL surface
// should be avoided.
}
QWaylandEglWindow::~QWaylandEglWindow()
{
if (m_eglSurface) {
eglDestroySurface(m_clientBufferIntegration->eglDisplay(), m_eglSurface);
m_eglSurface = 0;
}
if (m_waylandEglWindow)
wl_egl_window_destroy(m_waylandEglWindow);
delete m_contentFBO;
}
QWaylandWindow::WindowType QWaylandEglWindow::windowType() const
{
return QWaylandWindow::Egl;
}
void QWaylandEglWindow::ensureSize()
{
updateSurface(false);
}
void QWaylandEglWindow::setGeometry(const QRect &rect)
{
QWaylandWindow::setGeometry(rect);
// If the surface was invalidated through invalidateSurface() and
// we're now getting a resize we don't want to create it again.
// Just resize the wl_egl_window, the EGLSurface will be created
// the next time makeCurrent is called.
updateSurface(false);
}
void QWaylandEglWindow::updateSurface(bool create)
{
QMargins margins = frameMargins();
QRect rect = geometry();
QSize sizeWithMargins = (rect.size() + QSize(margins.left() + margins.right(), margins.top() + margins.bottom())) * scale();
// wl_egl_windows must have both width and height > 0
// mesa's egl returns NULL if we try to create a, invalid wl_egl_window, however not all EGL
// implementations may do that, so check the size ourself. Besides, we must deal with resizing
// a valid window to 0x0, which would make it invalid. Hence, destroy it.
if (sizeWithMargins.isEmpty()) {
if (m_eglSurface) {
eglDestroySurface(m_clientBufferIntegration->eglDisplay(), m_eglSurface);
m_eglSurface = 0;
}
if (m_waylandEglWindow) {
wl_egl_window_destroy(m_waylandEglWindow);
m_waylandEglWindow = 0;
}
mOffset = QPoint();
} else {
if (m_waylandEglWindow) {
int current_width, current_height;
static bool disableResizeCheck = qgetenv("QT_WAYLAND_DISABLE_RESIZECHECK").toInt();
if (!disableResizeCheck) {
wl_egl_window_get_attached_size(m_waylandEglWindow, ¤t_width, ¤t_height);
}
if (disableResizeCheck || (current_width != sizeWithMargins.width() || current_height != sizeWithMargins.height())) {
wl_egl_window_resize(m_waylandEglWindow, sizeWithMargins.width(), sizeWithMargins.height(), mOffset.x(), mOffset.y());
mOffset = QPoint();
m_resize = true;
}
} else if (create && wl_surface::isInitialized()) {
::wl_surface *wlSurface = wl_surface::object();
m_waylandEglWindow = wl_egl_window_create(wlSurface, sizeWithMargins.width(), sizeWithMargins.height());
}
if (!m_eglSurface && m_waylandEglWindow && create) {
EGLNativeWindowType eglw = (EGLNativeWindowType) m_waylandEglWindow;
m_eglSurface = eglCreateWindowSurface(m_clientBufferIntegration->eglDisplay(), m_eglConfig, eglw, 0);
if (Q_UNLIKELY(m_eglSurface == EGL_NO_SURFACE))
qCWarning(lcQpaWayland, "Could not create EGL surface (EGL error 0x%x)\n", eglGetError());
}
}
}
QRect QWaylandEglWindow::contentsRect() const
{
QRect r = geometry();
QMargins m = frameMargins();
return QRect(m.left(), m.bottom(), r.width(), r.height());
}
QSurfaceFormat QWaylandEglWindow::format() const
{
return m_format;
}
void QWaylandEglWindow::setVisible(bool visible)
{
QWaylandWindow::setVisible(visible);
if (!visible)
invalidateSurface();
}
void QWaylandEglWindow::invalidateSurface()
{
if (m_eglSurface) {
eglDestroySurface(m_clientBufferIntegration->eglDisplay(), m_eglSurface);
m_eglSurface = 0;
}
if (m_waylandEglWindow) {
wl_egl_window_destroy(m_waylandEglWindow);
m_waylandEglWindow = nullptr;
}
}
EGLSurface QWaylandEglWindow::eglSurface() const
{
return m_eglSurface;
}
GLuint QWaylandEglWindow::contentFBO() const
{
if (!decoration())
return 0;
if (m_resize || !m_contentFBO) {
QOpenGLFramebufferObject *old = m_contentFBO;
QSize fboSize = geometry().size() * scale();
m_contentFBO = new QOpenGLFramebufferObject(fboSize.width(), fboSize.height(), QOpenGLFramebufferObject::CombinedDepthStencil);
delete old;
m_resize = false;
}
return m_contentFBO->handle();
}
GLuint QWaylandEglWindow::contentTexture() const
{
return m_contentFBO->texture();
}
void QWaylandEglWindow::bindContentFBO()
{
if (decoration()) {
contentFBO();
m_contentFBO->bind();
}
}
}
QT_END_NAMESPACE
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