kc3-lang/angle/util/linux/wayland/WaylandWindow.cpp

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• Hash : 3d8dff0a
  Author :
  Date : 2025-08-26T20:23:21
  

  Suppress unsafe buffers on a file-by-file basis in util/
  
  Bug: b/436880895
  Change-Id: I299247e38853bb16afd466e3f6521342c0a2b0f8
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/6891980
  Auto-Submit: Tom Sepez <tsepez@chromium.org>
  Reviewed-by: Geoff Lang <geofflang@chromium.org>
  Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
  Commit-Queue: Geoff Lang <geofflang@chromium.org>
  

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• util/linux/wayland/WaylandWindow.cpp

• //
  // Copyright 2022 The ANGLE Project Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file.
  //
  
  // WaylandWindow.cpp: Implementation of OSWindow for Wayland
  
  #ifdef UNSAFE_BUFFERS_BUILD
  #    pragma allow_unsafe_buffers
  #endif
  
  #include "util/linux/wayland/WaylandWindow.h"
  #include <cerrno>
  #include <cstring>
  
  WaylandWindow::WaylandWindow()
      : mDisplay{nullptr}, mCompositor{nullptr}, mSurface{nullptr}, mWindow{nullptr}
  {}
  
  WaylandWindow::~WaylandWindow()
  {
      destroy();
  }
  
  void WaylandWindow::RegistryHandleGlobal(void *data,
                                           struct wl_registry *registry,
                                           uint32_t name,
                                           const char *interface,
                                           uint32_t version)
  {
      WaylandWindow *vc = reinterpret_cast<WaylandWindow *>(data);
  
      if (strcmp(interface, "wl_compositor") == 0)
      {
          void *compositor = wl_registry_bind(registry, name, &wl_compositor_interface, 1);
          vc->mCompositor  = reinterpret_cast<wl_compositor *>(compositor);
      }
  }
  
  void WaylandWindow::RegistryHandleGlobalRemove(void *data,
                                                 struct wl_registry *registry,
                                                 uint32_t name)
  {}
  
  const struct wl_registry_listener WaylandWindow::registryListener = {
      WaylandWindow::RegistryHandleGlobal, WaylandWindow::RegistryHandleGlobalRemove};
  
  bool WaylandWindow::initializeImpl(const std::string &name, int width, int height)
  {
      destroy();
  
      if (!mDisplay)
      {
          mDisplay = wl_display_connect(nullptr);
          if (!mDisplay)
          {
              return false;
          }
      }
  
      // Not get a window
      struct wl_registry *registry = wl_display_get_registry(mDisplay);
      wl_registry_add_listener(registry, &registryListener, this);
  
      // Round-trip to get globals
      wl_display_roundtrip(mDisplay);
      if (!mCompositor)
      {
          return false;
      }
  
      // We don't need this anymore
      wl_registry_destroy(registry);
  
      mSurface = wl_compositor_create_surface(mCompositor);
      if (!mSurface)
      {
          return false;
      }
  
      mWindow = wl_egl_window_create(mSurface, width, height);
      if (!mWindow)
      {
          return false;
      }
  
      fds[0] = {wl_display_get_fd(mDisplay), POLLIN, 0};
  
      mY      = 0;
      mX      = 0;
      mWidth  = width;
      mHeight = height;
  
      return true;
  }
  
  void WaylandWindow::disableErrorMessageDialog() {}
  
  void WaylandWindow::destroy()
  {
      if (mWindow)
      {
          wl_egl_window_destroy(mWindow);
          mWindow = nullptr;
      }
  
      if (mSurface)
      {
          wl_surface_destroy(mSurface);
          mSurface = nullptr;
      }
  
      if (mCompositor)
      {
          wl_compositor_destroy(mCompositor);
          mCompositor = nullptr;
      }
  }
  
  void WaylandWindow::resetNativeWindow() {}
  
  void WaylandWindow::setNativeDisplay(EGLNativeDisplayType display)
  {
      mDisplay = reinterpret_cast<wl_display *>(display);
  }
  
  EGLNativeWindowType WaylandWindow::getNativeWindow() const
  {
      return reinterpret_cast<EGLNativeWindowType>(mWindow);
  }
  
  EGLNativeDisplayType WaylandWindow::getNativeDisplay() const
  {
      return reinterpret_cast<EGLNativeDisplayType>(mDisplay);
  }
  
  void WaylandWindow::messageLoop()
  {
      while (wl_display_prepare_read(mDisplay) != 0)
          wl_display_dispatch_pending(mDisplay);
      if (wl_display_flush(mDisplay) < 0 && errno != EAGAIN)
      {
          wl_display_cancel_read(mDisplay);
          return;
      }
      if (poll(fds, 1, 0) > 0)
      {
          wl_display_read_events(mDisplay);
          wl_display_dispatch_pending(mDisplay);
      }
      else
      {
          wl_display_cancel_read(mDisplay);
      }
  }
  
  void WaylandWindow::setMousePosition(int x, int y) {}
  
  bool WaylandWindow::setOrientation(int width, int height)
  {
      return true;
  }
  
  bool WaylandWindow::setPosition(int x, int y)
  {
      return true;
  }
  
  bool WaylandWindow::resize(int width, int height)
  {
      wl_egl_window_resize(mWindow, width, height, 0, 0);
  
      mWidth  = width;
      mHeight = height;
  
      return true;
  }
  
  void WaylandWindow::setVisible(bool isVisible) {}
  
  void WaylandWindow::signalTestEvent() {}
  
  bool IsWaylandWindowAvailable()
  {
      wl_display *display = wl_display_connect(nullptr);
      if (!display)
      {
          return false;
      }
      wl_display_disconnect(display);
      return true;
  }
  

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