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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 "qeglplatformscreen_p.h"
#include "qeglplatformwindow_p.h"
#include <QtGui/qwindow.h>
#include <qpa/qwindowsysteminterface.h>
#include <QtPlatformSupport/private/qopenglcompositor_p.h>
QT_BEGIN_NAMESPACE
/*!
\class QEGLPlatformScreen
\brief Base class for EGL-based platform screen implementations.
\since 5.2
\internal
\ingroup qpa
*/
QEGLPlatformScreen::QEGLPlatformScreen(EGLDisplay dpy)
: m_dpy(dpy),
m_pointerWindow(0)
{
}
QEGLPlatformScreen::~QEGLPlatformScreen()
{
QOpenGLCompositor::destroy();
}
void QEGLPlatformScreen::handleCursorMove(const QPoint &pos)
{
const QOpenGLCompositor *compositor = QOpenGLCompositor::instance();
const QList<QOpenGLCompositorWindow *> windows = compositor->windows();
// Generate enter and leave events like a real windowing system would do.
if (windows.isEmpty())
return;
// First window is always fullscreen.
if (windows.count() == 1) {
QWindow *window = windows[0]->sourceWindow();
if (m_pointerWindow != window) {
m_pointerWindow = window;
QWindowSystemInterface::handleEnterEvent(window, window->mapFromGlobal(pos), pos);
}
return;
}
QWindow *enter = 0, *leave = 0;
for (int i = windows.count() - 1; i >= 0; --i) {
QWindow *window = windows[i]->sourceWindow();
const QRect geom = window->geometry();
if (geom.contains(pos)) {
if (m_pointerWindow != window) {
leave = m_pointerWindow;
m_pointerWindow = window;
enter = window;
}
break;
}
}
if (enter && leave)
QWindowSystemInterface::handleEnterLeaveEvent(enter, leave, enter->mapFromGlobal(pos), pos);
}
QPixmap QEGLPlatformScreen::grabWindow(WId wid, int x, int y, int width, int height) const
{
QOpenGLCompositor *compositor = QOpenGLCompositor::instance();
const QList<QOpenGLCompositorWindow *> windows = compositor->windows();
Q_ASSERT(!windows.isEmpty());
QImage img;
if (static_cast<QEGLPlatformWindow *>(windows.first()->sourceWindow()->handle())->isRaster()) {
// Request the compositor to render everything into an FBO and read it back. This
// is of course slow, but it's safe and reliable. It will not include the mouse
// cursor, which is a plus.
img = compositor->grab();
} else {
// Just a single OpenGL window without compositing. Do not support this case for now. Doing
// glReadPixels is not an option since it would read from the back buffer which may have
// undefined content when calling right after a swapBuffers (unless preserved swap is
// available and enabled, but we have no support for that).
qWarning("grabWindow: Not supported for non-composited OpenGL content. Use QQuickWindow::grabWindow() instead.");
return QPixmap();
}
if (!wid) {
const QSize screenSize = geometry().size();
if (width < 0)
width = screenSize.width() - x;
if (height < 0)
height = screenSize.height() - y;
return QPixmap::fromImage(img).copy(x, y, width, height);
}
foreach (QOpenGLCompositorWindow *w, windows) {
const QWindow *window = w->sourceWindow();
if (window->winId() == wid) {
const QRect geom = window->geometry();
if (width < 0)
width = geom.width() - x;
if (height < 0)
height = geom.height() - y;
QRect rect(geom.topLeft() + QPoint(x, y), QSize(width, height));
rect &= window->geometry();
return QPixmap::fromImage(img).copy(rect);
}
}
return QPixmap();
}
QT_END_NAMESPACE
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