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/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** 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 Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/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.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qeglfswindow.h"
#include "qeglfshooks.h"
#include <qpa/qwindowsysteminterface.h>
#include <qpa/qplatformintegration.h>
#include <private/qguiapplication_p.h>
#include <QtGui/QOpenGLContext>
#include <QtPlatformSupport/private/qeglplatformcursor_p.h>
#include <QtPlatformSupport/private/qeglconvenience_p.h>
#include <QtDebug>
QT_BEGIN_NAMESPACE
QEglFSWindow::QEglFSWindow(QWindow *w)
: QEGLPlatformWindow(w)
, m_surface(0)
, m_window(0)
, m_flags(0)
{
}
QEglFSWindow::~QEglFSWindow()
{
destroy();
}
void QEglFSWindow::create()
{
if (m_flags.testFlag(Created))
return;
QEGLPlatformWindow::create();
m_flags = Created;
if (window()->type() == Qt::Desktop)
return;
// Stop if there is already a window backed by a native window and surface. Additional
// raster windows will not have their own native window, surface and context. Instead,
// they will be composited onto the root window's surface.
QEglFSScreen *screen = this->screen();
QOpenGLCompositor *compositor = QOpenGLCompositor::instance();
if (screen->primarySurface() != EGL_NO_SURFACE) {
if (isRaster() && compositor->targetWindow()) {
m_format = compositor->targetWindow()->format();
return;
}
#if !defined(Q_OS_ANDROID) || defined(Q_OS_ANDROID_NO_SDK)
// We can have either a single OpenGL window or multiple raster windows.
// Other combinations cannot work.
qFatal("EGLFS: OpenGL windows cannot be mixed with others.");
#endif
return;
}
m_flags |= HasNativeWindow;
setGeometry(QRect()); // will become fullscreen
QWindowSystemInterface::handleExposeEvent(window(), QRect(QPoint(0, 0), geometry().size()));
EGLDisplay display = static_cast<QEglFSScreen *>(screen)->display();
QSurfaceFormat platformFormat = qt_egl_device_integration()->surfaceFormatFor(window()->requestedFormat());
m_config = QEglFSIntegration::chooseConfig(display, platformFormat);
m_format = q_glFormatFromConfig(display, m_config, platformFormat);
resetSurface();
screen->setPrimarySurface(m_surface);
if (isRaster()) {
QOpenGLContext *context = new QOpenGLContext(QGuiApplication::instance());
context->setFormat(m_format);
context->setScreen(window()->screen());
if (!context->create())
qFatal("EGLFS: Failed to create compositing context");
compositor->setTarget(context, window());
}
}
void QEglFSWindow::destroy()
{
QEglFSScreen *screen = this->screen();
if (m_flags.testFlag(HasNativeWindow)) {
QEGLPlatformCursor *cursor = qobject_cast<QEGLPlatformCursor *>(screen->cursor());
if (cursor)
cursor->resetResources();
if (screen->primarySurface() == m_surface)
screen->setPrimarySurface(EGL_NO_SURFACE);
invalidateSurface();
}
m_flags = 0;
QOpenGLCompositor::instance()->removeWindow(this);
}
// The virtual functions resetSurface and invalidateSurface may get overridden
// in derived classes, for example in the Android port, to perform the native
// window and surface creation differently.
void QEglFSWindow::invalidateSurface()
{
if (m_surface != EGL_NO_SURFACE) {
EGLDisplay display = static_cast<QEglFSScreen *>(screen())->display();
eglDestroySurface(display, m_surface);
m_surface = EGL_NO_SURFACE;
}
qt_egl_device_integration()->destroyNativeWindow(m_window);
m_window = 0;
}
void QEglFSWindow::resetSurface()
{
QEglFSScreen *nativeScreen = static_cast<QEglFSScreen *>(screen());
EGLDisplay display = nativeScreen->display();
m_window = qt_egl_device_integration()->createNativeWindow(this, nativeScreen->geometry().size(), m_format);
m_surface = eglCreateWindowSurface(display, m_config, m_window, NULL);
if (m_surface == EGL_NO_SURFACE) {
EGLint error = eglGetError();
eglTerminate(display);
qFatal("EGL Error : Could not create the egl surface: error = 0x%x\n", error);
}
}
void QEglFSWindow::setVisible(bool visible)
{
QOpenGLCompositor *compositor = QOpenGLCompositor::instance();
QList<QOpenGLCompositorWindow *> windows = compositor->windows();
QWindow *wnd = window();
if (wnd->type() != Qt::Desktop) {
if (visible) {
compositor->addWindow(this);
} else {
compositor->removeWindow(this);
windows = compositor->windows();
if (windows.size())
windows.last()->sourceWindow()->requestActivate();
}
}
QWindowSystemInterface::handleExposeEvent(wnd, QRect(QPoint(0, 0), wnd->geometry().size()));
if (visible)
QWindowSystemInterface::flushWindowSystemEvents();
}
void QEglFSWindow::setGeometry(const QRect &r)
{
QRect rect;
bool forceFullscreen = m_flags.testFlag(HasNativeWindow);
if (forceFullscreen)
rect = screen()->availableGeometry();
else
rect = r;
QPlatformWindow::setGeometry(rect);
// if we corrected the size, trigger a resize event
if (rect != r)
QWindowSystemInterface::handleGeometryChange(window(), rect, r);
}
QRect QEglFSWindow::geometry() const
{
// For yet-to-become-fullscreen windows report the geometry covering the entire
// screen. This is particularly important for Quick where the root object may get
// sized to some geometry queried before calling create().
if (!m_flags.testFlag(Created) && screen()->primarySurface() == EGL_NO_SURFACE)
return screen()->availableGeometry();
return QPlatformWindow::geometry();
}
void QEglFSWindow::requestActivateWindow()
{
if (window()->type() != Qt::Desktop)
QOpenGLCompositor::instance()->moveToTop(this);
QWindow *wnd = window();
QWindowSystemInterface::handleWindowActivated(wnd);
QWindowSystemInterface::handleExposeEvent(wnd, QRect(QPoint(0, 0), wnd->geometry().size()));
}
void QEglFSWindow::raise()
{
QWindow *wnd = window();
if (wnd->type() != Qt::Desktop) {
QOpenGLCompositor::instance()->moveToTop(this);
QWindowSystemInterface::handleExposeEvent(wnd, QRect(QPoint(0, 0), wnd->geometry().size()));
}
}
void QEglFSWindow::lower()
{
QOpenGLCompositor *compositor = QOpenGLCompositor::instance();
QList<QOpenGLCompositorWindow *> windows = compositor->windows();
if (window()->type() != Qt::Desktop && windows.count() > 1) {
int idx = windows.indexOf(this);
if (idx > 0) {
compositor->changeWindowIndex(this, idx - 1);
QWindowSystemInterface::handleExposeEvent(windows.last()->sourceWindow(),
QRect(QPoint(0, 0), windows.last()->sourceWindow()->geometry().size()));
}
}
}
EGLSurface QEglFSWindow::surface() const
{
return m_surface != EGL_NO_SURFACE ? m_surface : screen()->primarySurface();
}
QSurfaceFormat QEglFSWindow::format() const
{
return m_format;
}
EGLNativeWindowType QEglFSWindow::eglWindow() const
{
return m_window;
}
QEglFSScreen *QEglFSWindow::screen() const
{
return static_cast<QEglFSScreen *>(QPlatformWindow::screen());
}
QT_END_NAMESPACE
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