Mercurial > sdl-ios-xcode

annotate src/video/ataricommon/SDL_ataridevmouse.c @ 3844:332a59e39ce1 SDL-ryan-multiple-audio-device

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I really don't want to update these last two audio backends...I added an error that says if no one complains, the backends will be removed eventually. So if anyone ever wants them and they care enough to speak up, we'll know to do something about it. If no one does, that's less code to maintain. :)
author Ryan C. Gordon <icculus@icculus.org>
date Tue, 17 Oct 2006 06:45:17 +0000
parents c121d94672cb
children 99210400e8b9
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 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 #include "SDL_config.h"
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23
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24 /*
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25 MiNT /dev/mouse driver
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26
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27 Patrice Mandin
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28 */
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29
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30 #include <fcntl.h>
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31 #include <unistd.h>
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32
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33 #include "../../events/SDL_events_c.h"
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34 #include "SDL_ataridevmouse_c.h"
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35
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36 /* Defines */
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37
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38 #define DEVICE_NAME "/dev/mouse"
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39
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40 /* Local variables */
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41
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42 static int handle = -1;
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43 static int mouseb, prev_mouseb;
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44
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45 /* Functions */
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46
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47 int
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48 SDL_AtariDevMouse_Open(void)
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49 {
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50 int r;
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51 const char *mousedev;
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52
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53 /*
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54 TODO: Fix the MiNT device driver, that locks mouse for other
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55 applications, so this is disabled till fixed
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56 */
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57 return 0;
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58
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59 /* First, try SDL_MOUSEDEV device */
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60 mousedev = SDL_getenv("SDL_MOUSEDEV");
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61 if (!mousedev) {
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62 handle = open(mousedev, 0);
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63 }
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64
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65 /* Failed, try default device */
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66 if (handle < 0) {
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67 handle = open(DEVICE_NAME, 0);
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68 }
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69
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70 if (handle < 0) {
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71 handle = -1;
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72 return 0;
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73 }
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74
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75 /* Set non blocking mode */
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76 r = fcntl(handle, F_GETFL, 0);
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77 if (r < 0) {
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78 close(handle);
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79 handle = -1;
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80 return 0;
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81 }
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82
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83 r |= O_NDELAY;
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84
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85 r = fcntl(handle, F_SETFL, r);
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86 if (r < 0) {
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87 close(handle);
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88 handle = -1;
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89 return 0;
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90 }
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91
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92 prev_mouseb = 7;
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93 return 1;
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94 }
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95
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96 void
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97 SDL_AtariDevMouse_Close(void)
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98 {
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99 if (handle > 0) {
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100 close(handle);
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101 handle = -1;
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102 }
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103 }
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104
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105 static int
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106 atari_GetButton(int button)
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107 {
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108 switch (button) {
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109 case 0:
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110 return SDL_BUTTON_RIGHT;
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111 case 1:
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112 return SDL_BUTTON_MIDDLE;
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113 default:
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114 break;
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115 }
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116
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117 return SDL_BUTTON_LEFT;
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118 }
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119
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120 void
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121 SDL_AtariDevMouse_PostMouseEvents(_THIS, SDL_bool buttonEvents)
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122 {
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123 unsigned char buffer[3];
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124 int mousex, mousey;
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125
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126 if (handle < 0) {
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127 return;
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128 }
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129
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130 mousex = mousey = 0;
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131 while (read(handle, buffer, sizeof(buffer)) == sizeof(buffer)) {
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132 mouseb = buffer[0] & 7;
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133 mousex += (char) buffer[1];
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134 mousey += (char) buffer[2];
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135
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136 /* Mouse button events */
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137 if (buttonEvents && (mouseb != prev_mouseb)) {
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138 int i;
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139
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140 for (i = 0; i < 3; i++) {
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141 int curbutton, prevbutton;
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142
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143 curbutton = mouseb & (1 << i);
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144 prevbutton = prev_mouseb & (1 << i);
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145
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146 if (curbutton && !prevbutton) {
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147 SDL_PrivateMouseButton(SDL_RELEASED,
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148 atari_GetButton(i), 0, 0);
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149 }
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150 if (!curbutton && prevbutton) {
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151 SDL_PrivateMouseButton(SDL_PRESSED,
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152 atari_GetButton(i), 0, 0);
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153 }
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154 }
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155
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156 prev_mouseb = mouseb;
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157 }
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158 }
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159
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160 /* Mouse motion event */
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161 if (mousex || mousey) {
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162 SDL_PrivateMouseMotion(0, 1, mousex, -mousey);
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163 }
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164 }
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165
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166 /* vi: set ts=4 sw=4 expandtab: */