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annotate src/events/SDL_touch_c.h @ 4645:0375d020e7e3

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Auto-detects Wacom touch devices.
author Jim Grandpre <jim.tla@gmail.com>
date Mon, 31 May 2010 00:24:37 -0400
parents 057e8762d2a1
children eea1bf53effa
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2010 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22 #include "SDL_config.h"
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23
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24 #ifndef _SDL_touch_c_h
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25 #define _SDL_touch_c_h
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27 typedef struct SDL_Touch SDL_Touch;
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28 typedef struct SDL_Finger SDL_Finger;
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29
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30 struct SDL_Finger {
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31 int id;
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32 int x;
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33 int y;
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34 int z; /* for future use */
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35 int xdelta;
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36 int ydelta;
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37 int last_x, last_y; /* the last reported x and y coordinates */
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38 int pressure;
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39 };
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42 struct SDL_Touch
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43 {
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44
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45 /* Free the touch when it's time */
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46 void (*FreeTouch) (SDL_Touch * touch);
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47
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48 /* data common for tablets */
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49 int pressure_max;
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50 int pressure_min;
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51 int tilt; /* for future use */
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52 int rotation; /* for future use */
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53
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54 /* Data common to all touch */
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55 int id;
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56 SDL_Window *focus;
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57
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58 char *name;
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59 Uint8 buttonstate;
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60 SDL_bool relative_mode;
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61 SDL_bool flush_motion;
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62
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63 int num_fingers;
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64 int max_fingers;
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65 SDL_Finger** fingers;
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66
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67 void *driverdata;
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68 };
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69
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71 /* Initialize the touch subsystem */
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72 extern int SDL_TouchInit(void);
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73
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74 /*Get the touch at an index */
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75 extern SDL_Touch *SDL_GetTouchIndex(int index);
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76
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77 /* Get the touch with id = id */
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78 extern SDL_Touch *SDL_GetTouch(int id);
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79
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80 /*Get the finger at an index */
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81 extern SDL_Finger *SDL_GetFingerIndex(SDL_Touch *touch, int index);
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82
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83 /* Get the finger with id = id */
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84 extern SDL_Finger *SDL_GetFinger(SDL_Touch *touch,int id);
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85
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87 /* Add a touch, possibly reattaching at a particular index (or -1),
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88 returning the index of the touch, or -1 if there was an error. */
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89 extern int SDL_AddTouch(const SDL_Touch * touch, char *name);
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90
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92 /* Remove a touch at an index, clearing the slot for later */
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93 extern void SDL_DelTouch(int index);
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95 /* Set the touch focus window */
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96 extern void SDL_SetTouchFocus(int id, SDL_Window * window);
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98 /* Send a touch motion event for a touch */
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99 extern int SDL_SendTouchMotion(int id, int fingerid,
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100 int relative, int x, int y, int z);
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102 /* Send a touch button event for a touch */
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103 extern int SDL_SendTouchButton(int id, Uint8 state, Uint8 button);
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104
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105 /* Shutdown the touch subsystem */
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106 extern void SDL_TouchQuit(void);
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107
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108 /* FIXME: Where do these functions go in this header? */
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109 extern void SDL_ChangeEnd(int id, int end);
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111 #endif /* _SDL_touch_c_h */
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113 /* vi: set ts=4 sw=4 expandtab: */