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annotate include/SDL_touch.h @ 5230:5d01d426f2ea

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It's now possible to disable the fast atomic operations, at a huge performance penalty.
author Sam Lantinga <slouken@libsdl.org>
date Mon, 07 Feb 2011 22:57:33 -0800
parents f9ab8df6d45a
children b530ef003506
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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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14
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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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18
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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
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23 /**
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24 * \file SDL_touch.h
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25 *
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26 * Include file for SDL touch event handling.
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27 */
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28
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29 #ifndef _SDL_touch_h
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30 #define _SDL_touch_h
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31
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32 #include "SDL_stdinc.h"
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33 #include "SDL_error.h"
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34 #include "SDL_video.h"
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35
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36 #include "begin_code.h"
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37 /* Set up for C function definitions, even when using C++ */
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38 #ifdef __cplusplus
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39 /* *INDENT-OFF* */
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40 extern "C" {
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41 /* *INDENT-ON* */
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42 #endif
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43
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44
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45 typedef Sint64 SDL_TouchID;
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46 typedef Sint64 SDL_FingerID;
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47
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48
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49 struct SDL_Finger {
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50 SDL_FingerID id;
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51 Uint16 x;
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52 Uint16 y;
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53 Uint16 pressure;
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54 Uint16 xdelta;
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55 Uint16 ydelta;
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56 Uint16 last_x, last_y,last_pressure; /* the last reported coordinates */
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57 SDL_bool down;
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58 };
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59
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60 typedef struct SDL_Touch SDL_Touch;
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61 typedef struct SDL_Finger SDL_Finger;
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62
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63
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64 struct SDL_Touch {
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65
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66 /* Free the touch when it's time */
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67 void (*FreeTouch) (SDL_Touch * touch);
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68
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69 /* data common for tablets */
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70 float pressure_max, pressure_min;
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71 float x_max,x_min;
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72 float y_max,y_min;
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73 Uint16 xres,yres,pressureres;
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74 float native_xres,native_yres,native_pressureres;
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75 float tilt; /* for future use */
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76 float rotation; /* for future use */
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77
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78 /* Data common to all touch */
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79 SDL_TouchID id;
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80 SDL_Window *focus;
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81
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82 char *name;
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83 Uint8 buttonstate;
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84 SDL_bool relative_mode;
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85 SDL_bool flush_motion;
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86
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87 int num_fingers;
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88 int max_fingers;
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89 SDL_Finger** fingers;
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90
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91 void *driverdata;
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92 };
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93
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94
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95
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96 /* Function prototypes */
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97
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98 /**
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99 * \brief Get the touch object at the given id.
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100 *
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101 *
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102 */
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103 extern DECLSPEC SDL_Touch* SDLCALL SDL_GetTouch(SDL_TouchID id);
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104
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105
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106
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107 /**
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108 * \brief Get the finger object of the given touch, at the given id.
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109 *
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110 *
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111 */
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112 extern
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113 DECLSPEC SDL_Finger* SDLCALL SDL_GetFinger(SDL_Touch *touch, SDL_FingerID id);
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114
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115 /* Ends C function definitions when using C++ */
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116 #ifdef __cplusplus
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117 /* *INDENT-OFF* */
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118 }
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119 /* *INDENT-ON* */
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120 #endif
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121 #include "close_code.h"
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122
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123 #endif /* _SDL_mouse_h */
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124
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125 /* vi: set ts=4 sw=4 expandtab: */