| 1 | // Copyright (C) 2021 The Qt Company Ltd. |
| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only |
| 3 | |
| 4 | #include <QtCore/qtextstream.h> |
| 5 | #include <qpa/qwindowsysteminterface.h> |
| 6 | #include <qpa/qplatformintegration.h> |
| 7 | #include <private/qguiapplication_p.h> |
| 8 | #include <private/qwindow_p.h> |
| 9 | #ifndef QT_NO_OPENGL |
| 10 | # include <QtGui/private/qopenglcontext_p.h> |
| 11 | # include <QtGui/QOpenGLContext> |
| 12 | # include <QtOpenGL/private/qopenglcompositorbackingstore_p.h> |
| 13 | #endif |
| 14 | #include <QtGui/private/qeglconvenience_p.h> |
| 15 | |
| 16 | #include "qeglfswindow_p.h" |
| 17 | #ifndef QT_NO_OPENGL |
| 18 | # include "qeglfscursor_p.h" |
| 19 | #endif |
| 20 | #include "qeglfshooks_p.h" |
| 21 | #include "qeglfsdeviceintegration_p.h" |
| 22 | |
| 23 | QT_BEGIN_NAMESPACE |
| 24 | |
| 25 | QEglFSWindow::QEglFSWindow(QWindow *w) |
| 26 | : QPlatformWindow(w), |
| 27 | #ifndef QT_NO_OPENGL |
| 28 | m_backingStore(nullptr), |
| 29 | m_rasterCompositingContext(nullptr), |
| 30 | #endif |
| 31 | m_winId(0), |
| 32 | m_surface(EGL_NO_SURFACE), |
| 33 | m_window(0) |
| 34 | { |
| 35 | } |
| 36 | |
| 37 | QEglFSWindow::~QEglFSWindow() |
| 38 | { |
| 39 | destroy(); |
| 40 | } |
| 41 | |
| 42 | static WId newWId() |
| 43 | { |
| 44 | static WId id = 0; |
| 45 | |
| 46 | if (id == std::numeric_limits<WId>::max()) |
| 47 | qWarning(msg: "QEGLPlatformWindow: Out of window IDs" ); |
| 48 | |
| 49 | return ++id; |
| 50 | } |
| 51 | |
| 52 | void QEglFSWindow::create() |
| 53 | { |
| 54 | if (m_flags.testFlag(flag: Created)) |
| 55 | return; |
| 56 | |
| 57 | m_winId = newWId(); |
| 58 | |
| 59 | if (window()->type() == Qt::Desktop) { |
| 60 | QRect fullscreenRect(QPoint(), screen()->availableGeometry().size()); |
| 61 | QWindowSystemInterface::handleGeometryChange(window: window(), newRect: fullscreenRect); |
| 62 | return; |
| 63 | } |
| 64 | |
| 65 | m_flags = Created; |
| 66 | |
| 67 | // Stop if there is already a window backed by a native window and surface. Additional |
| 68 | // raster windows will not have their own native window, surface and context. Instead, |
| 69 | // they will be composited onto the root window's surface. |
| 70 | QEglFSScreen *screen = this->screen(); |
| 71 | #ifndef QT_NO_OPENGL |
| 72 | QOpenGLCompositor *compositor = QOpenGLCompositor::instance(); |
| 73 | if (screen->primarySurface() != EGL_NO_SURFACE) { |
| 74 | if (Q_UNLIKELY(isRaster() != (compositor->targetWindow() != nullptr))) { |
| 75 | # ifndef Q_OS_ANDROID |
| 76 | // We can have either a single OpenGL window or multiple raster windows. |
| 77 | // Other combinations cannot work. |
| 78 | qFatal(msg: "EGLFS: OpenGL windows cannot be mixed with others." ); |
| 79 | # endif |
| 80 | return; |
| 81 | } |
| 82 | m_format = compositor->targetWindow()->format(); |
| 83 | return; |
| 84 | } |
| 85 | #endif // QT_NO_OPENGL |
| 86 | |
| 87 | m_flags |= HasNativeWindow; |
| 88 | setGeometry(QRect()); // will become fullscreen |
| 89 | |
| 90 | resetSurface(); |
| 91 | |
| 92 | if (Q_UNLIKELY(m_surface == EGL_NO_SURFACE)) { |
| 93 | EGLint error = eglGetError(); |
| 94 | eglTerminate(dpy: screen->display()); |
| 95 | qFatal(msg: "EGL Error : Could not create the egl surface: error = 0x%x\n" , error); |
| 96 | } |
| 97 | |
| 98 | screen->setPrimarySurface(m_surface); |
| 99 | |
| 100 | #ifndef QT_NO_OPENGL |
| 101 | compositor->setTargetWindow(window: window(), nativeTargetGeometry: screen->rawGeometry()); |
| 102 | compositor->setRotation(qEnvironmentVariableIntValue(varName: "QT_QPA_EGLFS_ROTATION" )); |
| 103 | #endif |
| 104 | } |
| 105 | |
| 106 | void QEglFSWindow::setBackingStore(QOpenGLCompositorBackingStore *backingStore) |
| 107 | { |
| 108 | #ifndef QT_NO_OPENGL |
| 109 | if (!m_rasterCompositingContext) { |
| 110 | m_rasterCompositingContext = new QOpenGLContext; |
| 111 | m_rasterCompositingContext->setShareContext(QOpenGLContext::globalShareContext()); |
| 112 | m_rasterCompositingContext->setFormat(m_format); |
| 113 | m_rasterCompositingContext->setScreen(window()->screen()); |
| 114 | if (Q_UNLIKELY(!m_rasterCompositingContext->create())) |
| 115 | qFatal(msg: "EGLFS: Failed to create compositing context" ); |
| 116 | // If there is a "root" window into which raster and QOpenGLWidget content is |
| 117 | // composited, all other contexts must share with its context. |
| 118 | if (!QOpenGLContext::globalShareContext()) |
| 119 | qt_gl_set_global_share_context(context: m_rasterCompositingContext); |
| 120 | } |
| 121 | QOpenGLCompositor *compositor = QOpenGLCompositor::instance(); |
| 122 | compositor->setTargetContext(m_rasterCompositingContext); |
| 123 | #endif |
| 124 | m_backingStore = backingStore; |
| 125 | } |
| 126 | |
| 127 | void QEglFSWindow::destroy() |
| 128 | { |
| 129 | if (!m_flags.testFlag(flag: Created)) |
| 130 | return; // already destroyed |
| 131 | |
| 132 | QEglFSScreen *screen = this->screen(); |
| 133 | #ifndef QT_NO_OPENGL |
| 134 | QOpenGLCompositor *compositor = QOpenGLCompositor::instance(); |
| 135 | compositor->removeWindow(window: this); |
| 136 | if (compositor->targetWindow() == window()) { |
| 137 | QEglFSCursor *cursor = qobject_cast<QEglFSCursor *>(object: screen->cursor()); |
| 138 | if (cursor) |
| 139 | cursor->resetResources(); |
| 140 | |
| 141 | if (screen->primarySurface() == m_surface) |
| 142 | screen->setPrimarySurface(EGL_NO_SURFACE); |
| 143 | |
| 144 | invalidateSurface(); |
| 145 | |
| 146 | if (compositor->windows().isEmpty()) { |
| 147 | compositor->destroy(); |
| 148 | if (QOpenGLContext::globalShareContext() == m_rasterCompositingContext) |
| 149 | qt_gl_set_global_share_context(context: nullptr); |
| 150 | delete m_rasterCompositingContext; |
| 151 | } else { |
| 152 | auto topWindow = static_cast<QEglFSWindow *>(compositor->windows().last()); |
| 153 | // Make fullscreen |
| 154 | topWindow->setGeometry(screen->rawGeometry()); |
| 155 | topWindow->resetSurface(); |
| 156 | screen->setPrimarySurface(topWindow->surface()); |
| 157 | compositor->setTargetWindow(window: topWindow->sourceWindow(), nativeTargetGeometry: screen->rawGeometry()); |
| 158 | } |
| 159 | } |
| 160 | #else |
| 161 | if (m_flags.testFlag(HasNativeWindow)) { |
| 162 | if (screen->primarySurface() == m_surface) |
| 163 | screen->setPrimarySurface(EGL_NO_SURFACE); |
| 164 | |
| 165 | invalidateSurface(); |
| 166 | } |
| 167 | #endif |
| 168 | |
| 169 | m_flags = { }; |
| 170 | } |
| 171 | |
| 172 | void QEglFSWindow::invalidateSurface() |
| 173 | { |
| 174 | if (m_surface != EGL_NO_SURFACE) { |
| 175 | qCDebug(qLcEglDevDebug) << Q_FUNC_INFO << " about to destroy EGLSurface: " << m_surface; |
| 176 | |
| 177 | bool ok = eglDestroySurface(dpy: screen()->display(), surface: m_surface); |
| 178 | |
| 179 | if (!ok) { |
| 180 | qCWarning(qLcEglDevDebug, "QEglFSWindow::invalidateSurface() eglDestroySurface failed!" |
| 181 | " Follow-up errors or memory leaks are possible." |
| 182 | " eglGetError(): %x" , eglGetError()); |
| 183 | } |
| 184 | |
| 185 | if (eglGetCurrentSurface(EGL_READ) == m_surface || |
| 186 | eglGetCurrentSurface(EGL_DRAW) == m_surface) { |
| 187 | bool ok = eglMakeCurrent(dpy: eglGetCurrentDisplay(), EGL_NO_DISPLAY, EGL_NO_DISPLAY, EGL_NO_CONTEXT); |
| 188 | qCDebug(qLcEglDevDebug) << Q_FUNC_INFO << " due to eglDestroySurface on *currently* bound surface" |
| 189 | << "we just called eglMakeCurrent(..,0,0,0)! It returned: " << ok; |
| 190 | } |
| 191 | |
| 192 | if (screen()->primarySurface() == m_surface) |
| 193 | screen()->setPrimarySurface(EGL_NO_SURFACE); |
| 194 | |
| 195 | m_surface = EGL_NO_SURFACE; |
| 196 | m_flags = m_flags & ~Created; |
| 197 | } |
| 198 | qt_egl_device_integration()->destroyNativeWindow(window: m_window); |
| 199 | m_window = 0; |
| 200 | } |
| 201 | |
| 202 | void QEglFSWindow::resetSurface() |
| 203 | { |
| 204 | EGLDisplay display = screen()->display(); |
| 205 | QSurfaceFormat platformFormat = qt_egl_device_integration()->surfaceFormatFor(inputFormat: window()->requestedFormat()); |
| 206 | |
| 207 | m_config = QEglFSDeviceIntegration::chooseConfig(display, format: platformFormat); |
| 208 | m_format = q_glFormatFromConfig(display, config: m_config, referenceFormat: platformFormat); |
| 209 | const QSize surfaceSize = screen()->rawGeometry().size(); |
| 210 | m_window = qt_egl_device_integration()->createNativeWindow(platformWindow: this, size: surfaceSize, format: m_format); |
| 211 | m_surface = eglCreateWindowSurface(dpy: display, config: m_config, win: m_window, attrib_list: nullptr); |
| 212 | } |
| 213 | |
| 214 | void QEglFSWindow::setVisible(bool visible) |
| 215 | { |
| 216 | #ifndef QT_NO_OPENGL |
| 217 | QOpenGLCompositor *compositor = QOpenGLCompositor::instance(); |
| 218 | QList<QOpenGLCompositorWindow *> windows = compositor->windows(); |
| 219 | QWindow *wnd = window(); |
| 220 | |
| 221 | if (wnd->type() != Qt::Desktop) { |
| 222 | if (visible) { |
| 223 | compositor->addWindow(window: this); |
| 224 | } else { |
| 225 | compositor->removeWindow(window: this); |
| 226 | windows = compositor->windows(); |
| 227 | if (windows.size()) |
| 228 | windows.last()->sourceWindow()->requestActivate(); |
| 229 | } |
| 230 | } |
| 231 | #else |
| 232 | QWindow *wnd = window(); |
| 233 | #endif |
| 234 | QWindowSystemInterface::handleExposeEvent(window: wnd, region: QRect(QPoint(0, 0), wnd->geometry().size())); |
| 235 | |
| 236 | if (visible) |
| 237 | QWindowSystemInterface::flushWindowSystemEvents(flags: QEventLoop::ExcludeUserInputEvents); |
| 238 | } |
| 239 | |
| 240 | void QEglFSWindow::setGeometry(const QRect &r) |
| 241 | { |
| 242 | QRect rect = r; |
| 243 | if (m_flags.testFlag(flag: HasNativeWindow)) |
| 244 | rect = screen()->availableGeometry(); |
| 245 | |
| 246 | QPlatformWindow::setGeometry(rect); |
| 247 | |
| 248 | QWindowSystemInterface::handleGeometryChange(window: window(), newRect: rect); |
| 249 | |
| 250 | const QRect lastReportedGeometry = qt_window_private(window: window())->geometry; |
| 251 | if (rect != lastReportedGeometry) |
| 252 | QWindowSystemInterface::handleExposeEvent(window: window(), region: QRect(QPoint(0, 0), rect.size())); |
| 253 | } |
| 254 | |
| 255 | QRect QEglFSWindow::geometry() const |
| 256 | { |
| 257 | // For yet-to-become-fullscreen windows report the geometry covering the entire |
| 258 | // screen. This is particularly important for Quick where the root object may get |
| 259 | // sized to some geometry queried before calling create(). |
| 260 | if (!m_flags.testFlag(flag: Created) && screen()->primarySurface() == EGL_NO_SURFACE) |
| 261 | return screen()->availableGeometry(); |
| 262 | |
| 263 | return QPlatformWindow::geometry(); |
| 264 | } |
| 265 | |
| 266 | void QEglFSWindow::requestActivateWindow() |
| 267 | { |
| 268 | #ifndef QT_NO_OPENGL |
| 269 | if (window()->type() != Qt::Desktop) |
| 270 | QOpenGLCompositor::instance()->moveToTop(window: this); |
| 271 | #endif |
| 272 | QWindow *wnd = window(); |
| 273 | QWindowSystemInterface::handleFocusWindowChanged(window: wnd, r: Qt::ActiveWindowFocusReason); |
| 274 | QWindowSystemInterface::handleExposeEvent(window: wnd, region: QRect(QPoint(0, 0), wnd->geometry().size())); |
| 275 | } |
| 276 | |
| 277 | void QEglFSWindow::raise() |
| 278 | { |
| 279 | QWindow *wnd = window(); |
| 280 | if (wnd->type() != Qt::Desktop) { |
| 281 | #ifndef QT_NO_OPENGL |
| 282 | QOpenGLCompositor::instance()->moveToTop(window: this); |
| 283 | #endif |
| 284 | QWindowSystemInterface::handleExposeEvent(window: wnd, region: QRect(QPoint(0, 0), wnd->geometry().size())); |
| 285 | } |
| 286 | } |
| 287 | |
| 288 | void QEglFSWindow::lower() |
| 289 | { |
| 290 | #ifndef QT_NO_OPENGL |
| 291 | QOpenGLCompositor *compositor = QOpenGLCompositor::instance(); |
| 292 | QList<QOpenGLCompositorWindow *> windows = compositor->windows(); |
| 293 | if (window()->type() != Qt::Desktop && windows.size() > 1) { |
| 294 | int idx = windows.indexOf(t: this); |
| 295 | if (idx > 0) { |
| 296 | compositor->changeWindowIndex(window: this, newIdx: idx - 1); |
| 297 | QWindowSystemInterface::handleExposeEvent(window: windows.last()->sourceWindow(), |
| 298 | region: QRect(QPoint(0, 0), windows.last()->sourceWindow()->geometry().size())); |
| 299 | } |
| 300 | } |
| 301 | #endif |
| 302 | } |
| 303 | |
| 304 | EGLSurface QEglFSWindow::surface() const |
| 305 | { |
| 306 | return m_surface != EGL_NO_SURFACE ? m_surface : screen()->primarySurface(); |
| 307 | } |
| 308 | |
| 309 | QSurfaceFormat QEglFSWindow::format() const |
| 310 | { |
| 311 | return m_format; |
| 312 | } |
| 313 | |
| 314 | EGLNativeWindowType QEglFSWindow::eglWindow() const |
| 315 | { |
| 316 | return m_window; |
| 317 | } |
| 318 | |
| 319 | QEglFSScreen *QEglFSWindow::screen() const |
| 320 | { |
| 321 | return static_cast<QEglFSScreen *>(QPlatformWindow::screen()); |
| 322 | } |
| 323 | |
| 324 | bool QEglFSWindow::isRaster() const |
| 325 | { |
| 326 | const QWindow::SurfaceType type = window()->surfaceType(); |
| 327 | return type == QSurface::RasterSurface || type == QSurface::RasterGLSurface; |
| 328 | } |
| 329 | |
| 330 | #ifndef QT_NO_OPENGL |
| 331 | QWindow *QEglFSWindow::sourceWindow() const |
| 332 | { |
| 333 | return window(); |
| 334 | } |
| 335 | |
| 336 | const QPlatformTextureList *QEglFSWindow::textures() const |
| 337 | { |
| 338 | if (m_backingStore) |
| 339 | return m_backingStore->textures(); |
| 340 | |
| 341 | return nullptr; |
| 342 | } |
| 343 | |
| 344 | void QEglFSWindow::endCompositing() |
| 345 | { |
| 346 | if (m_backingStore) |
| 347 | m_backingStore->notifyComposited(); |
| 348 | } |
| 349 | #endif |
| 350 | |
| 351 | WId QEglFSWindow::winId() const |
| 352 | { |
| 353 | return m_winId; |
| 354 | } |
| 355 | |
| 356 | void QEglFSWindow::setOpacity(qreal) |
| 357 | { |
| 358 | if (!isRaster() && !backingStore()) |
| 359 | qWarning(msg: "QEglFSWindow: Cannot set opacity for non-raster windows" ); |
| 360 | |
| 361 | // Nothing to do here. The opacity is stored in the QWindow. |
| 362 | } |
| 363 | |
| 364 | QT_END_NAMESPACE |
| 365 | |