Adding a Wayland basic toolkit

ui/wayland/wayland_screen.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_screen.h"
+
+#include <wayland-client.h>
+
+#include "ui/wayland/wayland_display.h"
+
+WaylandScreen::WaylandScreen(WaylandDisplay* display, uint32_t id)
+    : output_(NULL),
+      display_(display) {
+    output_ = wl_output_create(display_->GetNativeDisplay(), id, 1);
+    wl_output_add_listener(output_, &output_listener, this);
+}
+
+WaylandScreen::~WaylandScreen() {
+  if (output_)
+    wl_output_destroy(output_);
+}
+
+Rectangle WaylandScreen::GetAllocation() const {
+  Rectangle allocation;
+  allocation.x = position_.x;
+  allocation.y = position_.y;
+
+  // Find the active mode and pass its dimensions
+  for (Modes::const_iterator it = modes_.begin(); it != modes_.end(); it++) {
+    if ((*it).flags & WL_OUTPUT_MODE_CURRENT) {
+      allocation.width = (*it).width;
+      allocation.height = (*it).height;
+      break;
+    }
+  }
+
+  return allocation;
+}
+
+//static
+const struct wl_output_listener WaylandScreen::output_listener = {
+    WaylandScreen::OutputHandleGeometry,
+    WaylandScreen::OutputHandleMode,
+};
+
+// static
+void WaylandScreen::OutputHandleGeometry(void* data,
+                                         struct wl_output* output,
+                                         int32_t x,
+                                         int32_t y,
+                                         int32_t physical_width,
+                                         int32_t physical_height,
+                                         int32_t subpixel,
+                                         const char* make,
+                                         const char* model) {
+  WaylandScreen* screen = static_cast<WaylandScreen*>(data);
+  screen->position_.x = x;
+  screen->position_.y = y;
+}
+
+// static
+void WaylandScreen::OutputHandleMode(void* data,
+                                     struct wl_output* wl_output,
+                                     uint32_t flags,
+                                     int32_t width,
+                                     int32_t height,
+                                     int32_t refresh) {
+  WaylandScreen* screen = static_cast<WaylandScreen*>(data);
+
+  Mode mode;
+  mode.width = width;
+  mode.height = height;
+  mode.refresh = refresh;
+  mode.flags = flags;
+
+  screen->modes_.push_back(mode);
+}