1 # This file is part of NIT (http://www.nitlanguage.org).
3 # Copyright 2012-2014 Alexis Laferrière <alexis.laf@xymus.net>
5 # Licensed under the Apache License, Version 2.0 (the "License");
6 # you may not use this file except in compliance with the License.
7 # You may obtain a copy of the License at
9 # http://www.apache.org/licenses/LICENSE-2.0
11 # Unless required by applicable law or agreed to in writing, software
12 # distributed under the License is distributed on an "AS IS" BASIS,
13 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 # See the License for the specific language governing permissions and
15 # limitations under the License.
17 # Pointer and hardware key events
24 #include <android/log.h>
25 #include <android_native_app_glue.h>
27 #define LOGW(...) ((void)__android_log_print(ANDROID_LOG_WARN, "mnit", __VA_ARGS__))
29 #define LOGI(...) ((void)__android_log_print(ANDROID_LOG_INFO, "mnit", __VA_ARGS__))
31 #define LOGI(...) (void)0
36 /* Handle inputs from the Android platform and sort them before
37 sending them in the Nit App */
38 static int32_t mnit_handle_input(struct android_app* app, AInputEvent* event) {
39 App nit_app = app->userData;
40 LOGI("handle input %i", (int)pthread_self());
41 if (AInputEvent_getType(event) == AINPUT_EVENT_TYPE_KEY) {
43 return App_native_input_key(nit_app, event);
45 else if (AInputEvent_getType(event) == AINPUT_EVENT_TYPE_MOTION) {
47 return App_native_input_motion(nit_app, event);
54 private extern class NativeAndroidMotionEvent `{AInputEvent *`}
56 fun pointers_count: Int `{
57 return AMotionEvent_getPointerCount(recv
);
60 # Did this motion event just started?
61 fun just_went_down: Bool `{
62 return (AMotionEvent_getAction(recv
) & AMOTION_EVENT_ACTION_MASK) == AMOTION_EVENT_ACTION_DOWN;
66 return AMotionEvent_getEdgeFlags(recv
);
69 # Get the non-primary pointer id that just went down (returns -1 or > 0)
70 fun index_down_pointer: Int `{
71 int a
= AMotionEvent_getAction(recv
);
72 if ((a
& AMOTION_EVENT_ACTION_MASK) == AMOTION_EVENT_ACTION_POINTER_DOWN)
73 return (a
& AMOTION_EVENT_ACTION_POINTER_INDEX_MASK) >> AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT;
77 fun action: AMotionEventAction `{ return AMotionEvent_getAction(recv); `}
80 private extern class AMotionEventAction `{ int32_t `}
81 fun action: Int `{ return recv & AMOTION_EVENT_ACTION_MASK; `}
83 fun is_down
: Bool do return action
== 0
84 fun is_up
: Bool do return action
== 1
85 fun is_move
: Bool do return action
== 2
86 fun is_cancel
: Bool do return action
== 3
87 fun is_outside
: Bool do return action
== 4
88 fun is_pointer_down
: Bool do return action
== 5
89 fun is_pointer_up
: Bool do return action
== 6
92 # An input event on Android
93 interface AndroidInputEvent
97 # A motion event concerning a single or more `pointers`
98 class AndroidMotionEvent
99 super AndroidInputEvent
102 private var native
: NativeAndroidMotionEvent
104 private var pointers_cache
: nullable Array[AndroidPointerEvent] = null
106 # Pointers (or fingers) composing this motion event
107 fun pointers
: Array[AndroidPointerEvent]
109 if pointers_cache
!= null then
110 return pointers_cache
.as(not null)
112 var pointers
= new Array[AndroidPointerEvent]
113 var pointers_count
= native
.pointers_count
114 for i
in [0 .. pointers_count
[do
115 var pointer_event
= new AndroidPointerEvent(self, i
)
116 pointers
.add
(pointer_event
)
118 pointers_cache
= pointers
123 redef fun just_went_down
: Bool do return native
.just_went_down
125 # Was the top edge of the screen intersected by this event?
126 fun touch_to_edge
: Bool do return native
.edge
== 1
128 # Was the bottom edge of the screen intersected by this event?
129 fun touch_bottom_edge
: Bool do return native
.edge
== 2
131 # Was the left edge of the screen intersected by this event?
132 fun touch_left_edge
: Bool do return native
.edge
== 4
134 # Was the right edge of the screen intersected by this event?
135 fun touch_right_edge
: Bool do return native
.edge
== 8
137 redef fun down_pointer
: nullable AndroidPointerEvent
139 if just_went_down
then
140 # The primary pointer went down
144 var i
= native
.index_down_pointer
146 # A secondary pointer went down
155 class AndroidPointerEvent
157 super AndroidInputEvent
159 private var motion_event
: AndroidMotionEvent
161 private var pointer_id
: Int
163 redef fun x
: Float do return native_x
(motion_event
.native
, pointer_id
)
165 private fun native_x
(motion_event
: NativeAndroidMotionEvent, pointer_id
: Int): Float `{
166 return AMotionEvent_getX(motion_event, pointer_id);
169 redef fun y
: Float do return native_y
(motion_event
.native
, pointer_id
)
171 private fun native_y
(motion_event
: NativeAndroidMotionEvent, pointer_id
: Int): Float `{
172 return AMotionEvent_getY(motion_event, pointer_id);
175 # Pressure applied by this pointer
176 fun pressure
: Float do return native_pressure
(motion_event
.native
, pointer_id
)
178 private fun native_pressure
(motion_event
: NativeAndroidMotionEvent, pointer_id
: Int): Float `{
179 return AMotionEvent_getPressure(motion_event, pointer_id);
184 var action
= motion_event
.native
.action
185 return action
.is_down
or action
.is_move
188 redef fun depressed
do return not pressed
190 # Does this pointer just began touching the screen?
191 fun just_went_down
: Bool
193 return motion_event
.down_pointer
== self
197 # An hardware key event
198 extern class AndroidKeyEvent `{AInputEvent *`}
200 super AndroidInputEvent
202 private fun action: Int `{ return AKeyEvent_getAction(recv); `}
204 redef fun is_down
: Bool do return action
== 0
205 redef fun is_up
: Bool do return action
== 1
207 # Hardware code of the key raising this event
208 fun key_code
: Int `{ return AKeyEvent_getKeyCode(recv); `}
211 int code
= AKeyEvent_getKeyCode(recv
);
212 if (code
>= AKEYCODE_0 && code
<= AKEYCODE_9)
213 return '0'+code-AKEYCODE_0
;
214 if (code
>= AKEYCODE_A && code
<= AKEYCODE_Z)
215 return 'a'+code-AKEYCODE_A
;
219 # Was this event raised by the back key?
220 fun is_back_key: Bool do return key_code == 4
222 # Was this event raised by the menu key?
223 fun is_menu_key: Bool do return key_code == 82
225 # Was this event raised by the search key?
226 fun is_search_key: Bool do return key_code == 84
228 # Was this event raised by the volume up key?
229 fun is_volume_up: Bool do return key_code == 24
231 # Was this event raised by the volume down key?
232 fun is_volume_down: Bool do return key_code == 25
237 redef fun init_window
239 set_as_input_handler native_app_glue
243 private fun set_as_input_handler(app_glue: NativeAppGlue)
244 import native_input_key, native_input_motion `{
245 app_glue-
>onInputEvent
= mnit_handle_input
;
248 # these are used as a callback from native to type incoming events
249 private fun native_input_key(event: AndroidKeyEvent): Bool is abstract
251 private fun native_input_motion(event: NativeAndroidMotionEvent): Bool is abstract