1 /*
2 Simple DirectMedia Layer
3 Copyright (C) 1997-2016 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
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 jclass mActivityClass = Android_JNI_GetActivityClass();
60 JNIEnv *env = Android_JNI_GetEnv();
61 jfieldID fid = (*env)->GetStaticFieldID(env, mActivityClass, "mSeparateMouseAndTouch", "Z");
62
63 separate_mouse_and_touch = (newValue && (SDL_strcmp(newValue, "1") == 0));
64 (*env)->SetStaticBooleanField(env, mActivityClass, fid, separate_mouse_and_touch ? JNI_TRUE : JNI_FALSE);
65 }
66
Android_InitTouch(void)67 void Android_InitTouch(void)
68 {
69 int i;
70 int* ids;
71 const int number = Android_JNI_GetTouchDeviceIds(&ids);
72
73 SDL_AddHintCallback(SDL_HINT_ANDROID_SEPARATE_MOUSE_AND_TOUCH,
74 SeparateEventsHintWatcher, NULL);
75
76 if (0 < number) {
77 for (i = 0; i < number; ++i) {
78 SDL_AddTouch((SDL_TouchID) ids[i], ""); /* no error handling */
79 }
80 SDL_free(ids);
81 }
82 }
83
Android_QuitTouch(void)84 void Android_QuitTouch(void)
85 {
86 SDL_DelHintCallback(SDL_HINT_ANDROID_SEPARATE_MOUSE_AND_TOUCH,
87 SeparateEventsHintWatcher, NULL);
88 separate_mouse_and_touch = SDL_FALSE;
89 }
90
Android_OnTouch(int touch_device_id_in,int pointer_finger_id_in,int action,float x,float y,float p)91 void Android_OnTouch(int touch_device_id_in, int pointer_finger_id_in, int action, float x, float y, float p)
92 {
93 SDL_TouchID touchDeviceId = 0;
94 SDL_FingerID fingerId = 0;
95 int window_x, window_y;
96 static SDL_FingerID pointerFingerID = 0;
97
98 if (!Android_Window) {
99 return;
100 }
101
102 touchDeviceId = (SDL_TouchID)touch_device_id_in;
103 if (SDL_AddTouch(touchDeviceId, "") < 0) {
104 SDL_Log("error: can't add touch %s, %d", __FILE__, __LINE__);
105 }
106
107 fingerId = (SDL_FingerID)pointer_finger_id_in;
108 switch (action) {
109 case ACTION_DOWN:
110 /* Primary pointer down */
111 if (!separate_mouse_and_touch) {
112 Android_GetWindowCoordinates(x, y, &window_x, &window_y);
113 /* send moved event */
114 SDL_SendMouseMotion(Android_Window, SDL_TOUCH_MOUSEID, 0, window_x, window_y);
115 /* send mouse down event */
116 SDL_SendMouseButton(Android_Window, SDL_TOUCH_MOUSEID, SDL_PRESSED, SDL_BUTTON_LEFT);
117 }
118 pointerFingerID = fingerId;
119 case ACTION_POINTER_DOWN:
120 /* Non primary pointer down */
121 SDL_SendTouch(touchDeviceId, fingerId, SDL_TRUE, x, y, p);
122 break;
123
124 case ACTION_MOVE:
125 if (!pointerFingerID) {
126 if (!separate_mouse_and_touch) {
127 Android_GetWindowCoordinates(x, y, &window_x, &window_y);
128 /* send moved event */
129 SDL_SendMouseMotion(Android_Window, SDL_TOUCH_MOUSEID, 0, window_x, window_y);
130 }
131 }
132 SDL_SendTouchMotion(touchDeviceId, fingerId, x, y, p);
133 break;
134
135 case ACTION_UP:
136 /* Primary pointer up */
137 if (!separate_mouse_and_touch) {
138 /* send mouse up */
139 SDL_SendMouseButton(Android_Window, SDL_TOUCH_MOUSEID, SDL_RELEASED, SDL_BUTTON_LEFT);
140 }
141 pointerFingerID = (SDL_FingerID) 0;
142 case ACTION_POINTER_UP:
143 /* Non primary pointer up */
144 SDL_SendTouch(touchDeviceId, fingerId, SDL_FALSE, x, y, p);
145 break;
146
147 default:
148 break;
149 }
150 }
151
152 #endif /* SDL_VIDEO_DRIVER_ANDROID */
153
154 /* vi: set ts=4 sw=4 expandtab: */
155