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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the plugins of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** 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 http://www.qt.io/terms-conditions. For further
** information use the contact form at http://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 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qwaylandeglwindow.h"
#include <QtWaylandClient/private/qwaylandscreen_p.h>
#include "qwaylandglcontext.h"
#include <QtPlatformSupport/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()))
, m_waylandEglWindow(0)
, m_eglSurface(0)
, m_contentFBO(0)
, m_resize(false)
{
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);
// 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::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;
wl_egl_window_get_attached_size(m_waylandEglWindow,¤t_width,¤t_height);
if (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) {
m_waylandEglWindow = wl_egl_window_create(object(), sizeWithMargins.width(), sizeWithMargins.height());
}
if (!m_eglSurface && create) {
EGLNativeWindowType eglw = (EGLNativeWindowType) m_waylandEglWindow;
m_eglSurface = eglCreateWindowSurface(m_clientBufferIntegration->eglDisplay(), m_eglConfig, eglw, 0);
}
}
}
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::invalidateSurface()
{
if (m_eglSurface) {
eglDestroySurface(m_clientBufferIntegration->eglDisplay(), m_eglSurface);
m_eglSurface = 0;
}
}
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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