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1 | /* |
2 | Simple DirectMedia Layer | |
3 | Copyright (C) 1997-2013 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 | ||
22 | /** | |
23 | * \file SDL_touch.h | |
24 | * | |
25 | * Include file for SDL touch event handling. | |
26 | */ | |
27 | ||
28 | #ifndef _SDL_touch_h | |
29 | #define _SDL_touch_h | |
30 | ||
31 | #include "SDL_stdinc.h" | |
32 | #include "SDL_error.h" | |
33 | #include "SDL_video.h" | |
34 | ||
35 | #include "begin_code.h" | |
36 | /* Set up for C function definitions, even when using C++ */ | |
37 | #ifdef __cplusplus | |
38 | extern "C" { | |
39 | #endif | |
40 | ||
41 | typedef Sint64 SDL_TouchID; | |
42 | typedef Sint64 SDL_FingerID; | |
43 | ||
44 | typedef struct SDL_Finger | |
45 | { | |
46 | SDL_FingerID id; | |
47 | float x; | |
48 | float y; | |
49 | float pressure; | |
50 | } SDL_Finger; | |
51 | ||
52 | /* Used as the device ID for mouse events simulated with touch input */ | |
53 | #define SDL_TOUCH_MOUSEID ((Uint32)-1) | |
54 | ||
55 | ||
56 | /* Function prototypes */ | |
57 | ||
58 | /** | |
59 | * \brief Get the number of registered touch devices. | |
60 | */ | |
61 | extern DECLSPEC int SDLCALL SDL_GetNumTouchDevices(void); | |
62 | ||
63 | /** | |
64 | * \brief Get the touch ID with the given index, or 0 if the index is invalid. | |
65 | */ | |
66 | extern DECLSPEC SDL_TouchID SDLCALL SDL_GetTouchDevice(int index); | |
67 | ||
68 | /** | |
69 | * \brief Get the number of active fingers for a given touch device. | |
70 | */ | |
71 | extern DECLSPEC int SDLCALL SDL_GetNumTouchFingers(SDL_TouchID touchID); | |
72 | ||
73 | /** | |
74 | * \brief Get the finger object of the given touch, with the given index. | |
75 | */ | |
76 | extern DECLSPEC SDL_Finger * SDLCALL SDL_GetTouchFinger(SDL_TouchID touchID, int index); | |
77 | ||
78 | /* Ends C function definitions when using C++ */ | |
79 | #ifdef __cplusplus | |
80 | } | |
81 | #endif | |
82 | #include "close_code.h" | |
83 | ||
84 | #endif /* _SDL_touch_h */ | |
85 | ||
86 | /* vi: set ts=4 sw=4 expandtab: */ |