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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef UI_WAYLAND_EVENTS_WAYLAND_EVENT_H_ | |
6 #define UI_WAYLAND_EVENTS_WAYLAND_EVENT_H_ | |
7 | |
8 #include <linux/input.h> | |
9 #include <stdint.h> | |
10 | |
11 // Wayland event information is being passed in as arguments to the callbacks. | |
12 // (See wayland_input_device.{h,cc} for information on the callbacks and how | |
13 // events are processed. | |
Evan Martin
2011/07/25 16:16:01
Missing )
| |
14 // In order to provide a more generic look for events we wrap these arguments | |
15 // in specific event structs. Then define a WaylandEvent as a union of all | |
16 // types of events that Wayland will send. | |
17 // | |
18 // The following fields are common for most event types and their use is | |
19 // similar: | |
20 // - time: | |
21 // The time of the event. This should be monotonically increasing. | |
22 // - state: | |
23 // The value of the button event as given by evdev. This is 0 if button | |
24 // isn't pressed. | |
25 // - modifiers: | |
26 // Stores all the keyboard modifiers (Ctrl, Alt, Shift, ...) currently | |
27 // active. The modifiers are values as defined by xkbcommon. | |
28 | |
29 namespace ui { | |
30 | |
31 // Types of events Wayland will send | |
32 typedef enum { | |
tfarina
2011/07/25 16:27:13
No need of typedef in C++ land! ;)
just:
enum Wa
| |
33 WAYLAND_BUTTON, | |
34 WAYLAND_KEY, | |
35 WAYLAND_MOTION, | |
36 WAYLAND_POINTER_FOCUS, | |
37 WAYLAND_KEYBOARD_FOCUS, | |
38 WAYLAND_GEOMETRY_CHANGE, | |
39 } WaylandEventType; | |
40 | |
41 // These are the mouse events expected. The event type Wayland sends is an | |
42 // evdev event. The following is the correct mapping from evdev to expected | |
43 // events type. | |
44 enum WaylandEventButtonType { | |
45 LEFT_BUTTON = BTN_LEFT, | |
46 MIDDLE_BUTTON = BTN_RIGHT, | |
47 RIGHT_BUTTON = BTN_MIDDLE, | |
48 SCROLL_UP = BTN_SIDE, | |
49 SCROLL_DOWN = BTN_EXTRA, | |
50 }; | |
51 | |
52 struct WaylandEventButton { | |
53 WaylandEventType type; | |
54 uint32_t time; | |
55 // WaylandEventButtonType defines some of the values button can take | |
56 uint32_t button; | |
57 uint32_t state; | |
58 uint32_t modifiers; | |
59 int32_t x; | |
60 int32_t y; | |
61 }; | |
62 | |
63 struct WaylandEventKey { | |
64 WaylandEventType type; | |
65 uint32_t time; | |
66 // The raw key value that evdev returns. | |
67 uint32_t key; | |
68 // The key symbol returned by processing the raw key using the xkbcommon | |
69 // library. | |
70 uint32_t sym; | |
71 uint32_t state; | |
72 uint32_t modifiers; | |
73 }; | |
74 | |
75 // Triggered when there is a motion event. The motion event is triggered | |
76 // only if there is a window under focus. | |
77 struct WaylandEventMotion { | |
78 WaylandEventType type; | |
79 uint32_t time; | |
80 uint32_t modifiers; | |
81 int32_t x; | |
82 int32_t y; | |
83 }; | |
84 | |
85 // Triggered when a window enters/exits pointer focus. The state tells us | |
86 // if the window lost focus (state == 0) or gained focus (state != 0). | |
87 struct WaylandEventPointerFocus { | |
88 WaylandEventType type; | |
89 uint32_t time; | |
90 uint32_t state; | |
91 int32_t x; | |
92 int32_t y; | |
93 }; | |
94 | |
95 // Triggered when a window enters/exits keyboard focus. The state tells us | |
96 // if the window lost focus (state == 0) or gained focus (state != 0). | |
97 struct WaylandEventKeyboardFocus { | |
98 WaylandEventType type; | |
99 uint32_t time; | |
100 uint32_t state; | |
101 uint32_t modifiers; | |
102 }; | |
103 | |
104 // Event triggered when a window's geometry changes. The event contains the | |
105 // position and dimensions of the window. | |
106 struct WaylandEventGeometryChange { | |
107 WaylandEventType type; | |
108 uint32_t time; | |
109 int32_t x; | |
110 int32_t y; | |
111 int32_t width; | |
112 int32_t height; | |
113 }; | |
114 | |
115 union _WaylandEvent { | |
tfarina
2011/07/25 16:27:13
Can this be just:
union WaylandEvent { ... };
?
| |
116 WaylandEventType type; | |
117 WaylandEventButton button; | |
118 WaylandEventKey key; | |
119 WaylandEventMotion motion; | |
120 WaylandEventPointerFocus pointer_focus; | |
121 WaylandEventKeyboardFocus keyboard_focus; | |
122 WaylandEventGeometryChange geometry_change; | |
123 }; | |
124 | |
125 typedef _WaylandEvent WaylandEvent; | |
tfarina
2011/07/25 16:27:13
Why?
| |
126 | |
127 } // namespace ui | |
128 | |
129 #endif // UI_WAYLAND_EVENTS_WAYLAND_EVENT_H_ | |
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