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// Copyright (C) 2021 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
// Qt-Security score:significant reason:default
#include <QtCore/qtextstream.h>
#include <qpa/qwindowsysteminterface.h>
#include <qpa/qplatformintegration.h>
#include <private/qguiapplication_p.h>
#include <private/qwindow_p.h>
#ifndef QT_NO_OPENGL
# include <QtGui/private/qopenglcontext_p.h>
# include <QtGui/QOpenGLContext>
# include <QtOpenGL/private/qopenglcompositorbackingstore_p.h>
#endif
#include <QtGui/private/qeglconvenience_p.h>
#include "qeglfswindow_p.h"
#ifndef QT_NO_OPENGL
# include "qeglfscursor_p.h"
#endif
#include "qeglfshooks_p.h"
#include "qeglfsdeviceintegration_p.h"
QT_BEGIN_NAMESPACE
QEglFSWindow::QEglFSWindow(QWindow *w)
: QPlatformWindow(w),
#ifndef QT_NO_OPENGL
m_backingStore(nullptr),
m_rasterCompositingContext(nullptr),
#endif
m_winId(0),
m_surface(EGL_NO_SURFACE),
m_window(0)
{
}
QEglFSWindow::~QEglFSWindow()
{
destroy();
}
static WId newWId()
{
static WId id = 0;
if (id == std::numeric_limits<WId>::max())
qWarning("QEGLPlatformWindow: Out of window IDs");
return ++id;
}
void QEglFSWindow::create()
{
if (m_flags.testFlag(Created))
return;
m_winId = newWId();
m_flags = Created;
// 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();
#ifndef QT_NO_OPENGL
QOpenGLCompositor *compositor = QOpenGLCompositor::instance();
if (screen->primarySurface() != EGL_NO_SURFACE) {
if (Q_UNLIKELY(isRaster() != (compositor->targetWindow() != nullptr))) {
# ifndef Q_OS_ANDROID
// 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_format = compositor->targetWindow()->format();
return;
}
#endif // QT_NO_OPENGL
m_flags |= HasNativeWindow;
setGeometry(QRect()); // will become fullscreen
resetSurface();
if (Q_UNLIKELY(m_surface == EGL_NO_SURFACE)) {
EGLint error = eglGetError();
eglTerminate(screen->display());
qFatal("EGL Error : Could not create the egl surface: error = 0x%x\n", error);
}
screen->setPrimarySurface(m_surface);
#ifndef QT_NO_OPENGL
compositor->setTargetWindow(window(), screen->rawGeometry());
compositor->setRotation(qEnvironmentVariableIntValue("QT_QPA_EGLFS_ROTATION"));
#endif
}
void QEglFSWindow::setBackingStore(QOpenGLCompositorBackingStore *backingStore)
{
#ifndef QT_NO_OPENGL
if (!m_rasterCompositingContext) {
m_rasterCompositingContext = new QOpenGLContext;
m_rasterCompositingContext->setShareContext(QOpenGLContext::globalShareContext());
m_rasterCompositingContext->setFormat(m_format);
m_rasterCompositingContext->setScreen(window()->screen());
if (Q_UNLIKELY(!m_rasterCompositingContext->create()))
qFatal("EGLFS: Failed to create compositing context");
// If there is a "root" window into which raster and QOpenGLWidget content is
// composited, all other contexts must share with its context.
if (!QOpenGLContext::globalShareContext())
qt_gl_set_global_share_context(m_rasterCompositingContext);
}
QOpenGLCompositor *compositor = QOpenGLCompositor::instance();
compositor->setTargetContext(m_rasterCompositingContext);
#endif
m_backingStore = backingStore;
}
void QEglFSWindow::destroy()
{
if (!m_flags.testFlag(Created))
return; // already destroyed
QEglFSScreen *screen = this->screen();
#ifndef QT_NO_OPENGL
QOpenGLCompositor *compositor = QOpenGLCompositor::instance();
compositor->removeWindow(this);
if (compositor->targetWindow() == window()) {
QEglFSCursor *cursor = qobject_cast<QEglFSCursor *>(screen->cursor());
if (cursor)
cursor->resetResources();
if (screen->primarySurface() == m_surface)
screen->setPrimarySurface(EGL_NO_SURFACE);
invalidateSurface();
if (compositor->windows().isEmpty()) {
compositor->destroy();
if (QOpenGLContext::globalShareContext() == m_rasterCompositingContext)
qt_gl_set_global_share_context(nullptr);
delete m_rasterCompositingContext;
} else {
auto windows = compositor->windows();
auto topWindow = static_cast<QEglFSWindow *>(windows.last());
// Make fullscreen
topWindow->setGeometry(screen->rawGeometry());
topWindow->resetSurface();
screen->setPrimarySurface(topWindow->surface());
compositor->setTargetWindow(topWindow->sourceWindow(), screen->rawGeometry());
}
}
#else
if (m_flags.testFlag(HasNativeWindow)) {
if (screen->primarySurface() == m_surface)
screen->setPrimarySurface(EGL_NO_SURFACE);
invalidateSurface();
}
#endif
m_flags = { };
}
void QEglFSWindow::invalidateSurface()
{
if (m_surface != EGL_NO_SURFACE) {
qCDebug(qLcEglDevDebug) << Q_FUNC_INFO << " about to destroy EGLSurface: " << m_surface;
bool ok = eglDestroySurface(screen()->display(), m_surface);
if (!ok) {
qCWarning(qLcEglDevDebug, "QEglFSWindow::invalidateSurface() eglDestroySurface failed!"
" Follow-up errors or memory leaks are possible."
" eglGetError(): %x", eglGetError());
}
if (eglGetCurrentSurface(EGL_READ) == m_surface ||
eglGetCurrentSurface(EGL_DRAW) == m_surface) {
bool ok = eglMakeCurrent(eglGetCurrentDisplay(), EGL_NO_DISPLAY, EGL_NO_DISPLAY, EGL_NO_CONTEXT);
qCDebug(qLcEglDevDebug) << Q_FUNC_INFO << " due to eglDestroySurface on *currently* bound surface"
<< "we just called eglMakeCurrent(..,0,0,0)! It returned: " << ok;
}
if (screen()->primarySurface() == m_surface)
screen()->setPrimarySurface(EGL_NO_SURFACE);
m_surface = EGL_NO_SURFACE;
m_flags = m_flags & ~Created;
}
qt_egl_device_integration()->destroyNativeWindow(m_window);
m_window = 0;
}
void QEglFSWindow::resetSurface()
{
EGLDisplay display = screen()->display();
QSurfaceFormat platformFormat = qt_egl_device_integration()->surfaceFormatFor(window()->requestedFormat());
m_config = QEglFSDeviceIntegration::chooseConfig(display, platformFormat);
m_format = q_glFormatFromConfig(display, m_config, platformFormat);
const QSize surfaceSize = screen()->rawGeometry().size();
m_window = qt_egl_device_integration()->createNativeWindow(this, surfaceSize, m_format);
m_surface = eglCreateWindowSurface(display, m_config, m_window, nullptr);
}
void QEglFSWindow::setVisible(bool visible)
{
#ifndef QT_NO_OPENGL
QOpenGLCompositor *compositor = QOpenGLCompositor::instance();
QList<QOpenGLCompositorWindow *> windows = compositor->windows();
QWindow *wnd = window();
if (visible) {
compositor->addWindow(this);
} else {
compositor->removeWindow(this);
windows = compositor->windows();
if (windows.size())
windows.last()->sourceWindow()->requestActivate();
}
#else
QWindow *wnd = window();
#endif
QWindowSystemInterface::handleExposeEvent(wnd, QRect(QPoint(0, 0), wnd->geometry().size()));
if (visible)
QWindowSystemInterface::flushWindowSystemEvents(QEventLoop::ExcludeUserInputEvents);
}
void QEglFSWindow::setGeometry(const QRect &r)
{
QRect rect = r;
if (m_flags.testFlag(HasNativeWindow))
rect = screen()->availableGeometry();
QPlatformWindow::setGeometry(rect);
QWindowSystemInterface::handleGeometryChange(window(), rect);
const QRect lastReportedGeometry = qt_window_private(window())->geometry;
if (rect != lastReportedGeometry)
QWindowSystemInterface::handleExposeEvent(window(), QRect(QPoint(0, 0), rect.size()));
}
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()
{
#ifndef QT_NO_OPENGL
QOpenGLCompositor::instance()->moveToTop(this);
#endif
QWindow *wnd = window();
QWindowSystemInterface::handleFocusWindowChanged(wnd, Qt::ActiveWindowFocusReason);
QWindowSystemInterface::handleExposeEvent(wnd, QRect(QPoint(0, 0), wnd->geometry().size()));
}
void QEglFSWindow::raise()
{
QWindow *wnd = window();
#ifndef QT_NO_OPENGL
QOpenGLCompositor::instance()->moveToTop(this);
#endif
QWindowSystemInterface::handleExposeEvent(wnd, QRect(QPoint(0, 0), wnd->geometry().size()));
}
void QEglFSWindow::lower()
{
#ifndef QT_NO_OPENGL
QOpenGLCompositor *compositor = QOpenGLCompositor::instance();
QList<QOpenGLCompositorWindow *> windows = compositor->windows();
if (windows.size() > 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()));
}
}
#endif
}
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());
}
bool QEglFSWindow::isRaster() const
{
return window()->surfaceType() == QSurface::RasterSurface;
}
#ifndef QT_NO_OPENGL
QWindow *QEglFSWindow::sourceWindow() const
{
return window();
}
const QPlatformTextureList *QEglFSWindow::textures() const
{
if (m_backingStore)
return m_backingStore->textures();
return nullptr;
}
void QEglFSWindow::endCompositing()
{
if (m_backingStore)
m_backingStore->notifyComposited();
}
#endif
WId QEglFSWindow::winId() const
{
return m_winId;
}
void QEglFSWindow::setOpacity(qreal)
{
if (!isRaster() && !backingStore())
qWarning("QEglFSWindow: Cannot set opacity for non-raster windows");
// Nothing to do here. The opacity is stored in the QWindow.
}
QT_END_NAMESPACE