Mercurial > sdl-ios-xcode

annotate src/video/ataricommon/SDL_xbiosevents.c @ 3280:00cace2d9080

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Merged a cleaned up version of Jiang's code changes from Google Summer of Code 2009
author Sam Lantinga <slouken@libsdl.org>
date Sat, 19 Sep 2009 13:29:40 +0000
parents 99210400e8b9
children
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2009 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 * XBIOS mouse & joystick vectors
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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 <mint/osbind.h>
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31
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32 #include "../../events/SDL_events_c.h"
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33 #include "SDL_xbiosevents_c.h"
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34 #include "SDL_xbiosinterrupt_s.h"
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35
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36 /* Variables */
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37
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38 int SDL_AtariXbios_enabled = 0;
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39
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40 /* Local variables */
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41
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42 static _KBDVECS *kbdvecs; /* Pointer to access system vectors */
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43 static Uint16 atari_prevmouseb; /* buttons */
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44
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45 /* Functions */
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46
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47 void
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48 SDL_AtariXbios_InstallVectors(int vectors_mask)
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49 {
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50 void *oldpile;
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51
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52 /* Clear variables */
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53 SDL_AtariXbios_mouselock =
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54 SDL_AtariXbios_mouseb =
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55 SDL_AtariXbios_mousex =
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56 SDL_AtariXbios_mousey =
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57 SDL_AtariXbios_joystick = atari_prevmouseb = 0;
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58
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59 if (vectors_mask == 0) {
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60 SDL_AtariXbios_enabled = 0;
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61 return;
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62 }
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63
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64 /* Read IKBD vectors base */
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65 kbdvecs = Kbdvbase();
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66
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67 /* Go to supervisor mode */
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68 oldpile = (void *) Super(0);
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69
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70 /* Install our vectors */
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71 SDL_AtariXbios_Install(kbdvecs,
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72 (vectors_mask & ATARI_XBIOS_MOUSEEVENTS) ?
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73 SDL_AtariXbios_MouseVector : NULL,
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74 (vectors_mask & ATARI_XBIOS_JOYSTICKEVENTS) ?
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75 SDL_AtariXbios_JoystickVector : NULL);
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76
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77 /* Back to user mode */
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78 Super(oldpile);
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79
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80 SDL_AtariXbios_enabled = 1;
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81 }
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82
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83 void
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84 SDL_AtariXbios_RestoreVectors(void)
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85 {
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86 void *oldpile;
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87
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88 if (SDL_AtariXbios_enabled == 0) {
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89 return;
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90 }
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91
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92 /* Read IKBD vectors base */
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93 kbdvecs = Kbdvbase();
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94
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95 /* Go to supervisor mode */
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96 oldpile = (void *) Super(NULL);
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97
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98 /* Reinstall system vector */
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99 SDL_AtariXbios_Restore(kbdvecs);
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100
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101 /* Back to user mode */
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102 Super(oldpile);
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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 break;
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112 case 1:
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113 default:
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114 return SDL_BUTTON_LEFT;
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115 break;
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116 }
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117 }
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118
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119 void
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120 SDL_AtariXbios_PostMouseEvents(_THIS, SDL_bool buttonEvents)
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121 {
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122 if (SDL_AtariXbios_enabled == 0) {
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123 return;
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124 }
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125
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126 /* Mouse motion ? */
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127 if (SDL_AtariXbios_mousex || SDL_AtariXbios_mousey) {
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128 SDL_PrivateMouseMotion(0, 1, SDL_AtariXbios_mousex,
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129 SDL_AtariXbios_mousey);
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130 SDL_AtariXbios_mousex = SDL_AtariXbios_mousey = 0;
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131 }
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132
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133 /* Mouse button ? */
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134 if (buttonEvents && (SDL_AtariXbios_mouseb != atari_prevmouseb)) {
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135 int i;
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136
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137 for (i = 0; i < 2; i++) {
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138 int curbutton, prevbutton;
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139
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140 curbutton = SDL_AtariXbios_mouseb & (1 << i);
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141 prevbutton = atari_prevmouseb & (1 << i);
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142
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143 if (curbutton && !prevbutton) {
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144 SDL_PrivateMouseButton(SDL_PRESSED, atari_GetButton(i), 0, 0);
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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 }
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151 atari_prevmouseb = SDL_AtariXbios_mouseb;
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152 }
305
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153 }
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154
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155 void
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156 SDL_AtariXbios_LockMousePosition(SDL_bool lockPosition)
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157 {
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158 SDL_AtariXbios_mouselock = lockPosition;
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159 }
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160
1895
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161 /* vi: set ts=4 sw=4 expandtab: */