Adding a Wayland basic toolkit

ui/wayland/wayland_display.h

+// 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.
+
+#ifndef UI_WAYLAND_WAYLAND_DISPLAY_H_
+#define UI_WAYLAND_WAYLAND_DISPLAY_H_
+
+#include <stdint.h>
+
+#include <list>
+
+#include "base/basictypes.h"
+
+struct wl_compositor;
+struct wl_display;
+struct wl_shell;
+struct wl_shm;
+struct wl_surface;
+struct wl_visual;
+
+namespace ui {
+
+class WaylandBuffer;
+class WaylandInputDevice;
+class WaylandScreen;
+
+// WaylandDisplay is a wrapper around wl_display. Once we get a valid
+// wl_display, the Wayland server will send different events to register
+// the Wayland compositor, shell, visuals, screens, input devices, ...
+class WaylandDisplay {
+ public:
+  // Attempt to create a connection to the display. If it fails this returns
+  // NULL
+  static WaylandDisplay* Connect(char* name);
+
+  // Get the WaylandDisplay associated with the native Wayland display
+  static WaylandDisplay* GetDisplay(wl_display* display);
+
+  ~WaylandDisplay();
+
+  // Creates a wayland surface. This is used to create a window surface.
+  // The returned pointer should be deleted by the caller.
+  wl_surface* CreateSurface();
+
+  // Sets the specified buffer as the surface for the cursor. (x, y) is
+  // the hotspot for the cursor.
+  void SetCursor(WaylandBuffer* buffer, int32_t x, int32_t y);
+
+  // Returns a pointer to the wl_display.
+  wl_display* display() const { return display_; }
+
+  // Returns a list of the registered screens.
+  std::list<WaylandScreen*> GetScreenList() const;
+
+  wl_shell* shell() const { return shell_; }
+
+  wl_shm* shm() const { return shm_; }
+
+  wl_visual* visual() const { return visual_; }
+
+ private:
+  WaylandDisplay(char* name);
+
+  // This handler resolves all server events used in initialization. It also
+  // handles input device registration, screen registration.
+  static void DisplayHandleGlobal(wl_display* display,
+                                  uint32_t id,
+                                  const char* interface,
+                                  uint32_t version,
+                                  void* data);
+
+  // Used by the compositor initialization to register the different visuals.
+  static void CompositorHandleVisual(void* data,
+                                     wl_compositor* compositor,
+                                     uint32_t id,
+                                     uint32_t token);
+
+  // Used when the shell requires configuration. This is called when a
+  // window is configured and receives its size.
+  // TODO(dnicoara) Need to look if there is one shell per window. Then it
+  // makes more sense to move this into the WaylandWindow and it would keep
+  // track of the shell.
+  static void ShellHandleConfigure(void* data,
+                                   wl_shell* shell,
+                                   uint32_t time,
+                                   uint32_t edges,
+                                   wl_surface* surface,
+                                   int32_t width,
+                                   int32_t height);
+
+  // WaylandDisplay manages the memory of all these pointers.
+  wl_display* display_;
+  wl_compositor* compositor_;
+  wl_shell* shell_;
+  wl_shm* shm_;
+  wl_visual* visual_;
+  std::list<WaylandScreen*> screen_list_;
+  std::list<WaylandInputDevice*> input_list_;
+
+  DISALLOW_COPY_AND_ASSIGN(WaylandDisplay);
+};
+
+}  // namespace ui
+
+#endif  // UI_WAYLAND_WAYLAND_DISPLAY_H_