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comparison src/events/SDL_touch_c.h @ 4640:f068a6dfc858

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Added SDL_touch.c/SDL_touch_c.h as slightly modifeind SDL_mouse*. Made reads in touchSimp non-blocking.
author Jim Grandpre <jim.tla@gmail.com>
date Tue, 25 May 2010 23:23:23 -0400
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children 49a97daea6ec
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4639:f5cd4b6231ba 4640:f068a6dfc858
1 /*
2 SDL - Simple DirectMedia Layer
3 Copyright (C) 1997-2010 Sam Lantinga
4
5 This library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 This library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with this library; if not, write to the Free Software
17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18
19 Sam Lantinga
20 slouken@libsdl.org
21 */
22 #include "SDL_config.h"
23
24 #ifndef _SDL_touch_c_h
25 #define _SDL_touch_c_h
26
27 typedef struct SDL_Touch SDL_Touch;
28
29
30 struct SDL_Touch
31 {
32 /* Warp the touch to (x,y) */
33 void (*WarpTouch) (SDL_Touch * touch, SDL_Window * window, int x,
34 int y);
35
36 /* Free the touch when it's time */
37 void (*FreeTouch) (SDL_Touch * touch);
38
39 /* data common for tablets */
40 int pressure;
41 int pressure_max;
42 int pressure_min;
43 int tilt; /* for future use */
44 int rotation; /* for future use */
45 int total_ends;
46 int current_end;
47
48 /* Data common to all touch */
49 int id;
50 SDL_Window *focus;
51 int which;
52 int x;
53 int y;
54 int z; /* for future use */
55 int xdelta;
56 int ydelta;
57 int last_x, last_y; /* the last reported x and y coordinates */
58 char *name;
59 Uint8 buttonstate;
60 SDL_bool relative_mode;
61 SDL_bool proximity;
62 SDL_bool flush_motion;
63
64 SDL_Cursor *cursors;
65 SDL_Cursor *def_cursor;
66 SDL_Cursor *cur_cursor;
67 SDL_bool cursor_shown;
68
69 void *driverdata;
70 };
71
72 /* Initialize the touch subsystem */
73 extern int SDL_TouchInit(void);
74
75 /* Get the touch at an index */
76 extern SDL_Touch *SDL_GetTouch(int index);
77
78 /* Add a touch, possibly reattaching at a particular index (or -1),
79 returning the index of the touch, or -1 if there was an error.
80 */
81 extern int SDL_AddTouch(const SDL_Touch * touch, char *name,
82 int pressure_max, int pressure_min, int ends);
83
84 /* Remove a touch at an index, clearing the slot for later */
85 extern void SDL_DelTouch(int index);
86
87 /* Clear the button state of a touch at an index */
88 extern void SDL_ResetTouch(int index);
89
90 /* Set the touch focus window */
91 extern void SDL_SetTouchFocus(int id, SDL_Window * window);
92
93 /* Send a touch motion event for a touch */
94 extern int SDL_SendTouchMotion(int id, int relative, int x, int y, int z);
95
96 /* Send a touch button event for a touch */
97 extern int SDL_SendTouchButton(int id, Uint8 state, Uint8 button);
98
99 /* Send a touch wheel event for a touch */
100 extern int SDL_SendTouchWheel(int id, int x, int y);
101
102 /* Send a proximity event for a touch */
103 extern int SDL_SendProximity(int id, int x, int y, int type);
104
105 /* Shutdown the touch subsystem */
106 extern void SDL_TouchQuit(void);
107
108 /* FIXME: Where do these functions go in this header? */
109 extern void SDL_ChangeEnd(int id, int end);
110
111 #endif /* _SDL_touch_c_h */
112
113 /* vi: set ts=4 sw=4 expandtab: */