Adding a Wayland basic toolkit

ui/wayland/wayland_display.cc

+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "ui/wayland/wayland_display.h"
+
+#include <string.h>
+#include <wayland-client.h>
+
+#include "ui/wayland/wayland_buffer.h"
+#include "ui/wayland/wayland_input_device.h"
+#include "ui/wayland/wayland_screen.h"
+#include "ui/wayland/wayland_window.h"
+
+// static
+WaylandDisplay* WaylandDisplay::Connect(char* name) {
+  WaylandDisplay* display = new WaylandDisplay(name);
+  if (!display->display_) {
+    delete display;
+    display = NULL;
+    return NULL;
+  }
+
+  wl_display_set_user_data(display->display_, display);

[Evan Martin, 2011/07/22 21:08:54]

Cool, this is a nice way to handle it.

+  // Register the display initialization handler and iterate over the initial
+  // connection events sent by the server. This is required since the display
+  // will send registration events needed to initialize everything else. This
+  // will create the compositor, visuals, etc.., which are required in creating
+  // a drawing context.
+  wl_display_add_global_listener(display->display_,
+                                 WaylandDisplay::DisplayHandleGlobal,
+                                 display);
+  wl_display_iterate(display->display_, WL_DISPLAY_READABLE);
+
+  return display;
+}
+
+// static
+WaylandDisplay* WaylandDisplay::GetDisplay(wl_display* display) {
+  return static_cast<WaylandDisplay*>(wl_display_get_user_data(display));
+}
+
+WaylandDisplay::WaylandDisplay(char* name) : display_(NULL),
+                                             compositor_(NULL),
+                                             shell_(NULL),
+                                             shm_(NULL),
+                                             visual_(NULL) {
+  display_ = wl_display_connect(name);
+}
+
+WaylandDisplay::~WaylandDisplay() {
+  if (display_)
+    wl_display_destroy(display_);
+  if (compositor_)
+    wl_compositor_destroy(compositor_);
+  if (visual_)
+    wl_visual_destroy(visual_);
+  if (shell_)
+    wl_shell_destroy(shell_);
+  if (shm_)
+    wl_shm_destroy(shm_);
+  for (std::list<WaylandInputDevice*>::iterator it = input_list_.begin();
+       it != input_list_.end(); it++) {
+    delete *it;
+  }
+  for (std::list<WaylandScreen*>::iterator it = screen_list_.begin();
+       it != screen_list_.end(); it++) {
+    delete *it;
+  }
+}
+
+wl_surface* WaylandDisplay::CreateSurface() {
+  return wl_compositor_create_surface(compositor_);
+}
+
+void WaylandDisplay::SetCursor(WaylandBuffer* buffer,
+                               int32_t x, int32_t y) {
+  // Currently there is no way of knowing which input device should have the
+  // buffer attached, so we just attach to every input device.
+  for (std::list<WaylandInputDevice*>::iterator it = input_list_.begin();
+       it != input_list_.end(); it++) {
+    (*it)->Attach(buffer->GetBuffer(), x, y);
+  }
+}
+
+wl_display* WaylandDisplay::GetNativeDisplay() const {
+  return display_;
+}
+
+std::list<WaylandScreen*> WaylandDisplay::GetScreenList() const {
+  return screen_list_;
+}
+
+wl_shell* WaylandDisplay::GetShell() const {
+  return shell_;
+}
+
+wl_shm* WaylandDisplay::GetShm() const {
+  return shm_;
+}
+
+wl_visual* WaylandDisplay::GetVisual() const {
+  return visual_;
+}
+
+// static
+void WaylandDisplay::DisplayHandleGlobal(wl_display* display,
+                                         uint32_t id,
+                                         const char* interface,
+                                         uint32_t version,
+                                         void* data) {
+  WaylandDisplay* disp = static_cast<WaylandDisplay*>(data);
+
+  static const wl_compositor_listener compositor_listener = {
+    WaylandDisplay::CompositorHandleVisual,
+  };
+  static const wl_shell_listener shell_listener = {
+    WaylandDisplay::ShellHandleConfigure,
+  };
+
+  if (strcmp(interface, "wl_compositor") == 0) {
+    disp->compositor_ = wl_compositor_create(display, id, 1);
+    wl_compositor_add_listener(disp->compositor_,
+                               &compositor_listener,
+                               disp);
+  } else if (strcmp(interface, "wl_output") == 0) {
+    WaylandScreen* screen = new WaylandScreen(disp, id);
+    disp->screen_list_.push_back(screen);
+  } else if (strcmp(interface, "wl_input_device") == 0) {
+    WaylandInputDevice *input_device = new WaylandInputDevice(display, id);
+    disp->input_list_.push_back(input_device);
+  } else if (strcmp(interface, "wl_shell") == 0) {
+    disp->shell_ = wl_shell_create(display, id, 1);
+    wl_shell_add_listener(disp->shell_, &shell_listener, disp);
+  } else if (strcmp(interface, "wl_shm") == 0) {
+    disp->shm_ = wl_shm_create(display, id, 1);
+  }
+}
+
+// static
+void WaylandDisplay::CompositorHandleVisual(void* data,
+                                            wl_compositor* compositor,
+                                            uint32_t id,
+                                            uint32_t token) {
+  WaylandDisplay* display = static_cast<WaylandDisplay*>(data);
+
+  // The compositor may support multiple types of visuals but we really only
+  // need one.

[Evan Martin, 2011/07/22 21:08:54]

Should we do some sort of NOTREACHED() / NOTIMPLEMENTED() in the other cases? 
Or will the compositor expose all of these in sequence and we just want to grab
the one we care about?

+  switch (token) {
+    case WL_COMPOSITOR_VISUAL_ARGB32:
+      break;
+    case WL_COMPOSITOR_VISUAL_PREMULTIPLIED_ARGB32:
+      display->visual_ = wl_visual_create(display->display_, id, 1);
+      break;
+    case WL_COMPOSITOR_VISUAL_XRGB32:
+      break;
+  }
+}
+
+// static
+void WaylandDisplay::ShellHandleConfigure(void* data,
+                                          wl_shell* shell,
+                                          uint32_t time,
+                                          uint32_t edges,
+                                          wl_surface* surface,
+                                          int32_t width,
+                                          int32_t height) {
+  WaylandWindow* window = static_cast<WaylandWindow*>(
+      wl_surface_get_user_data(surface));
+  window->Configure(time, edges, 0, 0, width, height);
+}