1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
|
// Copyright (c) 2014, Loïc Hoguin <[email protected]>
//
// Permission to use, copy, modify, and/or distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
#include "esdl2.h"
#define EVENT_TYPE_ENUM(E) \
E(window, SDL_WINDOWEVENT) \
E(key_down, SDL_KEYDOWN) \
E(key_up, SDL_KEYUP) \
E(mouse_motion, SDL_MOUSEMOTION) \
E(mouse_down, SDL_MOUSEBUTTONDOWN) \
E(mouse_up, SDL_MOUSEBUTTONUP) \
E(mouse_wheel, SDL_MOUSEWHEEL) \
E(quit, SDL_QUIT)
NIF_ENUM_TO_ATOM_FUNCTION(event_type_to_atom, Uint32, EVENT_TYPE_ENUM)
#define WINDOW_EVENT_ENUM(E) \
E(shown, SDL_WINDOWEVENT_SHOWN) \
E(hidden, SDL_WINDOWEVENT_HIDDEN) \
E(exposed, SDL_WINDOWEVENT_EXPOSED) \
E(moved, SDL_WINDOWEVENT_MOVED) \
E(resized, SDL_WINDOWEVENT_RESIZED) \
E(size_changed, SDL_WINDOWEVENT_SIZE_CHANGED) \
E(minimized, SDL_WINDOWEVENT_MINIMIZED) \
E(maximized, SDL_WINDOWEVENT_MAXIMIZED) \
E(restored, SDL_WINDOWEVENT_RESTORED) \
E(enter, SDL_WINDOWEVENT_ENTER) \
E(leave, SDL_WINDOWEVENT_LEAVE) \
E(focus_gained, SDL_WINDOWEVENT_FOCUS_GAINED) \
E(focus_lost, SDL_WINDOWEVENT_FOCUS_LOST) \
E(close, SDL_WINDOWEVENT_CLOSE)
NIF_ENUM_TO_ATOM_FUNCTION(window_event_to_atom, Uint8, WINDOW_EVENT_ENUM)
#define KEYMOD_FLAGS(F) \
F(left_shift, KMOD_LSHIFT) \
F(right_shift, KMOD_RSHIFT) \
F(left_ctrl, KMOD_LCTRL) \
F(right_ctrl, KMOD_RCTRL) \
F(left_alt, KMOD_LALT) \
F(right_alt, KMOD_RALT) \
F(left_gui, KMOD_LGUI) \
F(right_gui, KMOD_RGUI) \
F(num, KMOD_NUM) \
F(caps, KMOD_CAPS) \
F(mode, KMOD_MODE)
NIF_FLAGS_TO_LIST_FUNCTION(keymod_flags_to_list, Uint16, KEYMOD_FLAGS)
#define BUTTON_ENUM(E) \
E(left, SDL_BUTTON_LEFT) \
E(middle, SDL_BUTTON_MIDDLE) \
E(right, SDL_BUTTON_RIGHT) \
E(x1, SDL_BUTTON_X1) \
E(x2, SDL_BUTTON_X2)
NIF_ENUM_TO_ATOM_FUNCTION(button_to_atom, Uint8, BUTTON_ENUM)
// poll_event
NIF_CALL_HANDLER(thread_poll_event)
{
SDL_Event event;
ERL_NIF_TERM map;
if (SDL_PollEvent(&event) == 0)
return atom_false;
map = enif_make_new_map(env);
// All events have a type and a timestamp.
enif_make_map_put(env, map, atom_type,
event_type_to_atom(event.type), &map);
enif_make_map_put(env, map, atom_timestamp,
enif_make_uint(env, event.common.timestamp), &map);
// Some events have additional information.
if (event.type == SDL_WINDOWEVENT) {
enif_make_map_put(env, map, atom_window_id,
enif_make_uint(env, event.window.windowID), &map);
enif_make_map_put(env, map, atom_event,
window_event_to_atom(event.window.event), &map);
enif_make_map_put(env, map, atom_data,
enif_make_tuple2(env,
enif_make_int(env, event.window.data1),
enif_make_int(env, event.window.data2)),
&map);
} else if (event.type == SDL_KEYDOWN || event.type == SDL_KEYUP) {
enif_make_map_put(env, map, atom_window_id,
enif_make_uint(env, event.key.windowID), &map);
// We don't pass the state as this information is redundant with the type.
enif_make_map_put(env, map, atom_repeat,
event.key.repeat == 0 ? atom_false : atom_true, &map);
enif_make_map_put(env, map, atom_scancode,
enif_make_uint(env, event.key.keysym.scancode), &map);
enif_make_map_put(env, map, atom_sym,
enif_make_uint(env, event.key.keysym.sym), &map);
enif_make_map_put(env, map, atom_mod,
keymod_flags_to_list(env, event.key.keysym.mod), &map);
} else if (event.type == SDL_MOUSEMOTION) {
enif_make_map_put(env, map, atom_window_id,
enif_make_uint(env, event.motion.windowID), &map);
enif_make_map_put(env, map, atom_which,
(event.motion.which == SDL_TOUCH_MOUSEID)
? atom_touch
: enif_make_uint(env, event.motion.which),
&map);
// @todo We may want the state value here as it's a bitmask.
// Question is how do we represent it to the Erlang code?
enif_make_map_put(env, map, atom_x,
enif_make_int(env, event.motion.x), &map);
enif_make_map_put(env, map, atom_y,
enif_make_int(env, event.motion.y), &map);
enif_make_map_put(env, map, atom_xrel,
enif_make_int(env, event.motion.xrel), &map);
enif_make_map_put(env, map, atom_yrel,
enif_make_int(env, event.motion.yrel), &map);
} else if (event.type == SDL_MOUSEBUTTONDOWN || event.type == SDL_MOUSEBUTTONUP) {
enif_make_map_put(env, map, atom_window_id,
enif_make_uint(env, event.button.windowID), &map);
enif_make_map_put(env, map, atom_which,
(event.button.which == SDL_TOUCH_MOUSEID)
? atom_touch
: enif_make_uint(env, event.button.which),
&map);
enif_make_map_put(env, map, atom_button,
(event.button.button <= SDL_BUTTON_X2)
? button_to_atom(event.button.button)
: enif_make_uint(env, event.button.button),
&map);
// We don't pass the state as this information is redundant with the type.
// @todo SDL 2.0.2 clicks
enif_make_map_put(env, map, atom_x,
enif_make_int(env, event.button.x), &map);
enif_make_map_put(env, map, atom_y,
enif_make_int(env, event.button.y), &map);
} else if (event.type == SDL_MOUSEWHEEL) {
enif_make_map_put(env, map, atom_window_id,
enif_make_uint(env, event.wheel.windowID), &map);
enif_make_map_put(env, map, atom_which,
(event.wheel.which == SDL_TOUCH_MOUSEID)
? atom_touch
: enif_make_uint(env, event.wheel.which),
&map);
enif_make_map_put(env, map, atom_x,
enif_make_int(env, event.wheel.x), &map);
enif_make_map_put(env, map, atom_y,
enif_make_int(env, event.wheel.y), &map);
}
// @todo SDL_TextEditingEvent
// @todo SDL_TextInputEvent
// @todo SDL_JoyAxisEvent
// @todo SDL_JoyBallEvent
// @todo SDL_JoyHatEvent
// @todo SDL_JoyButtonEvent
// @todo SDL_JoyDeviceEvent
// @todo SDL_ControllerAxisEvent
// @todo SDL_ControllerButtonEvent
// @todo SDL_ControllerDeviceEvent
// @todo SDL_UserEvent
// @todo SDL_SysWMEvent
// @todo SDL_TouchFingerEvent
// @todo SDL_MultiGestureEvent
// @todo SDL_DollarGestureEvent
// @todo SDL_DropEvent
return map;
}
NIF_FUNCTION(poll_event)
{
return nif_thread_call(env, thread_poll_event, 0);
}
|
