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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 BASE_WAYLAND_WAYLAND_EVENT_H_ | |
| 6 #define BASE_WAYLAND_WAYLAND_EVENT_H_ | |
| 7 | |
| 8 #include <stdint.h> | |
| 9 | |
| 10 // Wayland event information is being passed in as arguments to the callbacks. | |
| 11 // (See wayland_input_device.{h,cc} for information on the callbacks and how | |
| 12 // events are processed.) | |
| 13 // In order to provide a more generic look for events we wrap these arguments | |
| 14 // in specific event structs. Then define a WaylandEvent as a union of all | |
| 15 // types of events that Wayland will send. | |
| 16 // | |
| 17 // The following fields are common for most event types and their use is | |
| 18 // similar: | |
| 19 // - time: | |
| 20 // The time of the event. This should be monotonically increasing. | |
| 21 // - state: | |
| 22 // The value of the button event as given by evdev. This is 0 if button | |
| 23 // isn't pressed. | |
| 24 // - modifiers: | |
| 25 // Stores all the keyboard modifiers (Ctrl, Alt, Shift, ...) currently | |
| 26 // active. The modifiers are values as defined by xkbcommon. | |
| 27 | |
| 28 namespace base { | |
| 29 namespace wayland { | |
| 30 | |
| 31 // Types of events Wayland will send | |
| 32 enum WaylandEventType { | |
| 33 WAYLAND_BUTTON, | |
| 34 WAYLAND_KEY, | |
| 35 WAYLAND_MOTION, | |
| 36 WAYLAND_POINTER_FOCUS, | |
| 37 WAYLAND_KEYBOARD_FOCUS, | |
| 38 WAYLAND_GEOMETRY_CHANGE, | |
| 39 }; | |
| 40 | |
| 41 struct WaylandEventButton { | |
| 42 WaylandEventType type; | |
| 43 uint32_t time; | |
| 44 // WaylandEventButtonType defines some of the values button can take | |
| 45 uint32_t button; | |
| 46 uint32_t state; | |
| 47 uint32_t modifiers; | |
| 48 int32_t x; | |
| 49 int32_t y; | |
| 50 }; | |
| 51 | |
| 52 struct WaylandEventKey { | |
| 53 WaylandEventType type; | |
| 54 uint32_t time; | |
| 55 // The raw key value that evdev returns. | |
| 56 uint32_t key; | |
| 57 // The key symbol returned by processing the raw key using the xkbcommon | |
| 58 // library. | |
| 59 uint32_t sym; | |
| 60 uint32_t state; | |
| 61 uint32_t modifiers; | |
| 62 }; | |
| 63 | |
| 64 // Triggered when there is a motion event. The motion event is triggered | |
| 65 // only if there is a window under focus. | |
| 66 struct WaylandEventMotion { | |
| 67 WaylandEventType type; | |
| 68 uint32_t time; | |
| 69 uint32_t modifiers; | |
| 70 int32_t x; | |
| 71 int32_t y; | |
| 72 }; | |
| 73 | |
| 74 // Triggered when a window enters/exits pointer focus. The state tells us | |
| 75 // if the window lost focus (state == 0) or gained focus (state != 0). | |
| 76 struct WaylandEventPointerFocus { | |
| 77 WaylandEventType type; | |
| 78 uint32_t time; | |
| 79 uint32_t state; | |
| 80 int32_t x; | |
| 81 int32_t y; | |
| 82 }; | |
| 83 | |
| 84 // Triggered when a window enters/exits keyboard focus. The state tells us | |
| 85 // if the window lost focus (state == 0) or gained focus (state != 0). | |
| 86 struct WaylandEventKeyboardFocus { | |
| 87 WaylandEventType type; | |
| 88 uint32_t time; | |
| 89 uint32_t state; | |
| 90 uint32_t modifiers; | |
| 91 }; | |
| 92 | |
| 93 // Event triggered when a window's geometry changes. The event contains the | |
| 94 // position and dimensions of the window. | |
| 95 struct WaylandEventGeometryChange { | |
| 96 WaylandEventType type; | |
| 97 uint32_t time; | |
| 98 int32_t x; | |
| 99 int32_t y; | |
| 100 int32_t width; | |
| 101 int32_t height; | |
| 102 }; | |
| 103 | |
| 104 union WaylandEvent { | |
| 105 WaylandEventType type; | |
| 106 WaylandEventButton button; | |
| 107 WaylandEventKey key; | |
| 108 WaylandEventMotion motion; | |
| 109 WaylandEventPointerFocus pointer_focus; | |
| 110 WaylandEventKeyboardFocus keyboard_focus; | |
| 111 WaylandEventGeometryChange geometry_change; | |
| 112 }; | |
| 113 | |
| 114 } // namespace wayland | |
| 115 } // namespace base | |
| 116 | |
| 117 #endif // BASE_WAYLAND_WAYLAND_EVENT_H_ | |
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