wayland patch for inspection

ui/wayland/wayland_input_device.h

+// Copyright 2013 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_INPUT_DEVICE_H_
+#define UI_WAYLAND_WAYLAND_INPUT_DEVICE_H_
+
+#include <stdint.h>
+
+#include <xkbcommon/xkbcommon.h>
+#include "base/basictypes.h"
+#include "ui/gfx/point.h"
+#include "ui/wayland/wayland_delegate.h"
+
+#define MOD_SHIFT_MASK          0x01
+#define MOD_ALT_MASK            0x02
+#define MOD_CONTROL_MASK        0x04
+
+struct wl_array;
+struct wl_buffer;
+struct wl_display;
+struct wl_input_device;
+struct wl_surface;
+
+namespace ui {
+
+class WaylandWindow;
+
+enum CursorType {
+  CURSOR_BOTTOM_LEFT,
+  CURSOR_BOTTOM_RIGHT,
+  CURSOR_BOTTOM,
+  CURSOR_DRAGGING,
+  CURSOR_LEFT_PTR,
+  CURSOR_LEFT,
+  CURSOR_RIGHT,
+  CURSOR_TOP_LEFT,
+  CURSOR_TOP_RIGHT,
+  CURSOR_TOP,
+  CURSOR_IBEAM,
+  CURSOR_HAND1,
+};
+
+// Constants to identify the type of resize.
+enum BoundsChangeType
+{
+  kBoundsChange_None = 0,
+  kBoundsChange_Repositions,
+  kBoundsChange_Resizes,
+};
+
+enum WindowLocation {
+  WINDOW_INTERIOR = 0,
+  WINDOW_RESIZING_TOP = 1,
+  WINDOW_RESIZING_BOTTOM = 2,
+  WINDOW_RESIZING_LEFT = 4,
+  WINDOW_RESIZING_TOP_LEFT = 5,
+  WINDOW_RESIZING_BOTTOM_LEFT = 6,
+  WINDOW_RESIZING_RIGHT = 8,
+  WINDOW_RESIZING_TOP_RIGHT = 9,
+  WINDOW_RESIZING_BOTTOM_RIGHT = 10,
+  WINDOW_RESIZING_MASK = 15,
+  WINDOW_EXTERIOR = 16,
+  WINDOW_TITLEBAR = 17,
+  WINDOW_CLIENT_AREA = 18,
+};
+
+// This class represents an input device that was registered with Wayland.
+// The purpose of this class is to parse and wrap events into generic
+// WaylandEvent types and dispatch the event to the appropriate WaylandWindow.
+//
+// How Wayland events work:
+// ------------------------
+//
+// When the On*Focus events are triggered, the input device receives a
+// reference to the surface that just received/lost focus. Each surface is
+// associated with a unique WaylandWindow. When processing the focus events we
+// keep track of the currently focused window such that when we receive
+// different events (mouse button press or key press) we only send the event to
+// the window in focus.
+class WaylandInputDevice {
+ public:
+  WaylandInputDevice(WaylandDisplay* display, uint32_t id);
+  ~WaylandInputDevice();
+
+  // Returns a bitmask of the kBoundsChange_ values.
+  static BoundsChangeType GetBoundsChangeForWindowComponent(int component);
+  static WindowLocation GetLocationForWindowComponent(int component);
+  static int GetPointerImageForWindowComponent(int component);
+
+  void SetCurrentPointerImage(int pointer) { current_pointer_image_ = pointer; }
+  int GetCurrentPointerImage() { return current_pointer_image_; }
+
+  wl_seat* GetInputSeat() { return input_seat_; }
+  wl_pointer* GetPointer() { return input_pointer_; }
+
+ private:
+  // Input device callback functions. These will create 'WaylandEvent's and
+  // send them to the currently focused window.
+  // Args:
+  //  - data: Pointer to the WaylandInputDevice object associated with the
+  //          'input_device'
+  //  - input_device:
+  //          The input device that sent the event
+  //  - time: The time of the event.
+  static void OnMotionNotify(void* data,
+      wl_pointer* input_pointer,
+      uint32_t time,
+      wl_fixed_t sx_w,
+      wl_fixed_t sy_w);
+
+  static void OnButtonNotify(void* data,
+      wl_pointer* input_pointer,
+      uint32_t serial,
+      uint32_t time,
+      uint32_t button,
+      uint32_t state);
+
+  static void OnKeyNotify(void* data,
+      wl_keyboard* input_keyboard,
+      uint32_t serial,
+      uint32_t time,
+      uint32_t key,
+      uint32_t state);
+
+  static void OnAxisNotify(void* data,
+      wl_pointer* input_pointer,
+      uint32_t time,
+      uint32_t axis,
+      int32_t value);
+
+  // On*Focus events also have a Wayland surface associated with them. If the
+  // surface is NULL, then the event signifies a loss of focus. Otherwise we
+  // use the surface to get the WaylandWindow that receives focus.
+  static void OnPointerEnter(void* data,
+      wl_pointer* input_pointer,
+      uint32_t serial,
+      wl_surface* surface,
+      wl_fixed_t sx_w,
+      wl_fixed_t sy_w);
+  static void OnPointerLeave(void* data,
+      wl_pointer* input_pointer,
+      uint32_t serial,
+      wl_surface* surface);
+  static void OnKeyboardKeymap(void *data,
+      struct wl_keyboard *keyboard,
+      uint32_t format, int fd, uint32_t size);
+  static void OnKeyboardEnter(void* data,
+      wl_keyboard* input_keyboard,
+      uint32_t serial,
+      wl_surface* surface,
+      wl_array* keys);
+  static void OnKeyboardLeave(void* data,
+      wl_keyboard* input_keyboard,
+      uint32_t serial,
+      wl_surface* surface);
+  static void OnKeyModifiers(void *data, wl_keyboard *keyboard,
+      uint32_t serial, uint32_t mods_depressed,
+      uint32_t mods_latched, uint32_t mods_locked,
+      uint32_t group);
+
+  static void OnSeatCapabilities(void *data,
+      wl_seat *seat,
+      uint32_t caps);
+
+  wl_seat* input_seat_;
+  wl_pointer* input_pointer_;
+  wl_keyboard* input_keyboard_;
+  wl_display* display_;
+  wl_registry* registry_;
+
+  // These keep track of the window that's currently under focus. NULL if no
+  // window is under focus.
+  WaylandWindow* pointer_focus_;
+  WaylandWindow* keyboard_focus_;
+
+  // Keeps track of the currently active keyboard modifiers. We keep this
+  // since we want to advertise keyboard modifiers with mouse events.
+  uint32_t keyboard_modifiers_;
+
+  // Keeps track of the last position for the motion event. We want to
+  // publish this with events such as button notify which doesn't have a
+  // position associated by default.
+  gfx::Point global_position_;
+  gfx::Point surface_position_;
+
+  // Keep track of the time of last event. Useful when we get buffer Attach
+  // calls and the calls wouldn't have a way of getting an event time.
+  uint32_t pointer_enter_serial_;
+
+  // keymap used to transform keyboard events.
+  struct xkb {
+    struct xkb_rule_names names;
+    struct xkb_keymap *keymap;
+    struct xkb_state *state;
+    struct xkb_context *context;
+    xkb_mod_mask_t control_mask;
+    xkb_mod_mask_t alt_mask;
+    xkb_mod_mask_t shift_mask;
+  };
+
+  xkb xkb_;
+
+  void InitXKB();
+  void FiniXKB();
+
+  int current_pointer_image_;
+
+  DISALLOW_COPY_AND_ASSIGN(WaylandInputDevice);
+};
+
+}  // namespace ui
+
+#endif  // UI_WAYLAND_WAYLAND_INPUT_DEVICE_H_