1 /*
2 Simple DirectMedia Layer
3 Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
4
5 This software is provided 'as-is', without any express or implied
6 warranty. In no event will the authors be held liable for any damages
7 arising from the use of this software.
8
9 Permission is granted to anyone to use this software for any purpose,
10 including commercial applications, and to alter it and redistribute it
11 freely, subject to the following restrictions:
12
13 1. The origin of this software must not be misrepresented; you must not
14 claim that you wrote the original software. If you use this software
15 in a product, an acknowledgment in the product documentation would be
16 appreciated but is not required.
17 2. Altered source versions must be plainly marked as such, and must not be
18 misrepresented as being the original software.
19 3. This notice may not be removed or altered from any source distribution.
20 */
21 #include "../../SDL_internal.h"
22
23 #if SDL_VIDEO_DRIVER_ANDROID
24
25 #include <android/log.h>
26
27 #include "SDL_hints.h"
28 #include "SDL_events.h"
29 #include "SDL_log.h"
30 #include "SDL_androidtouch.h"
31 #include "../../events/SDL_mouse_c.h"
32 #include "../../events/SDL_touch_c.h"
33 #include "../../core/android/SDL_android.h"
34
35 #define ACTION_DOWN 0
36 #define ACTION_UP 1
37 #define ACTION_MOVE 2
38 #define ACTION_CANCEL 3
39 #define ACTION_OUTSIDE 4
40 #define ACTION_POINTER_DOWN 5
41 #define ACTION_POINTER_UP 6
42
Android_GetWindowCoordinates(float x,float y,int * window_x,int * window_y)43 static void Android_GetWindowCoordinates(float x, float y,
44 int *window_x, int *window_y)
45 {
46 int window_w, window_h;
47
48 SDL_GetWindowSize(Android_Window, &window_w, &window_h);
49 *window_x = (int)(x * window_w);
50 *window_y = (int)(y * window_h);
51 }
52
53 static SDL_bool separate_mouse_and_touch = SDL_FALSE;
54
55 static void SDLCALL
SeparateEventsHintWatcher(void * userdata,const char * name,const char * oldValue,const char * newValue)56 SeparateEventsHintWatcher(void *userdata, const char *name,
57 const char *oldValue, const char *newValue)
58 {
59 separate_mouse_and_touch = (newValue && (SDL_strcmp(newValue, "1") == 0));
60
61 Android_JNI_SetSeparateMouseAndTouch(separate_mouse_and_touch);
62 }
63
Android_InitTouch(void)64 void Android_InitTouch(void)
65 {
66 int i;
67 int* ids;
68 const int number = Android_JNI_GetTouchDeviceIds(&ids);
69
70 SDL_AddHintCallback(SDL_HINT_ANDROID_SEPARATE_MOUSE_AND_TOUCH,
71 SeparateEventsHintWatcher, NULL);
72
73 if (0 < number) {
74 for (i = 0; i < number; ++i) {
75 SDL_AddTouch((SDL_TouchID) ids[i], ""); /* no error handling */
76 }
77 SDL_free(ids);
78 }
79 }
80
Android_QuitTouch(void)81 void Android_QuitTouch(void)
82 {
83 SDL_DelHintCallback(SDL_HINT_ANDROID_SEPARATE_MOUSE_AND_TOUCH,
84 SeparateEventsHintWatcher, NULL);
85 separate_mouse_and_touch = SDL_FALSE;
86 }
87
Android_OnTouch(int touch_device_id_in,int pointer_finger_id_in,int action,float x,float y,float p)88 void Android_OnTouch(int touch_device_id_in, int pointer_finger_id_in, int action, float x, float y, float p)
89 {
90 SDL_TouchID touchDeviceId = 0;
91 SDL_FingerID fingerId = 0;
92 int window_x, window_y;
93 static SDL_FingerID pointerFingerID = 0;
94
95 if (!Android_Window) {
96 return;
97 }
98
99 touchDeviceId = (SDL_TouchID)touch_device_id_in;
100 if (SDL_AddTouch(touchDeviceId, "") < 0) {
101 SDL_Log("error: can't add touch %s, %d", __FILE__, __LINE__);
102 }
103
104 fingerId = (SDL_FingerID)pointer_finger_id_in;
105 switch (action) {
106 case ACTION_DOWN:
107 /* Primary pointer down */
108 if (!separate_mouse_and_touch) {
109 Android_GetWindowCoordinates(x, y, &window_x, &window_y);
110 /* send moved event */
111 SDL_SendMouseMotion(Android_Window, SDL_TOUCH_MOUSEID, 0, window_x, window_y);
112 /* send mouse down event */
113 SDL_SendMouseButton(Android_Window, SDL_TOUCH_MOUSEID, SDL_PRESSED, SDL_BUTTON_LEFT);
114 }
115 pointerFingerID = fingerId;
116 case ACTION_POINTER_DOWN:
117 /* Non primary pointer down */
118 SDL_SendTouch(touchDeviceId, fingerId, SDL_TRUE, x, y, p);
119 break;
120
121 case ACTION_MOVE:
122 if (!pointerFingerID) {
123 if (!separate_mouse_and_touch) {
124 Android_GetWindowCoordinates(x, y, &window_x, &window_y);
125 /* send moved event */
126 SDL_SendMouseMotion(Android_Window, SDL_TOUCH_MOUSEID, 0, window_x, window_y);
127 }
128 }
129 SDL_SendTouchMotion(touchDeviceId, fingerId, x, y, p);
130 break;
131
132 case ACTION_UP:
133 /* Primary pointer up */
134 if (!separate_mouse_and_touch) {
135 /* send mouse up */
136 SDL_SendMouseButton(Android_Window, SDL_TOUCH_MOUSEID, SDL_RELEASED, SDL_BUTTON_LEFT);
137 }
138 pointerFingerID = (SDL_FingerID) 0;
139 case ACTION_POINTER_UP:
140 /* Non primary pointer up */
141 SDL_SendTouch(touchDeviceId, fingerId, SDL_FALSE, x, y, p);
142 break;
143
144 default:
145 break;
146 }
147 }
148
149 #endif /* SDL_VIDEO_DRIVER_ANDROID */
150
151 /* vi: set ts=4 sw=4 expandtab: */
152