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annotate src/video/ataricommon/SDL_xbiosevents.c @ 838:f9a5fbcdf868

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author Sam Lantinga <slouken@libsdl.org>
date Tue, 17 Feb 2004 18:01:39 +0000
parents 0b9b4bf3c1e7
children a8068adf156b
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2004 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 Library General Public
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7 License as published by the Free Software Foundation; either
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8 version 2 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 Library 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 Library General Public
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16 License along with this library; if not, write to the Free
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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 #ifdef SAVE_RCSID
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24 static char rcsid =
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25 "@(#) $Id$";
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26 #endif
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27
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28 /*
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29 * XBIOS mouse & joystick vectors
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30 *
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31 * Patrice Mandin
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32 */
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33
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34 #include <stdio.h>
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35 #include <stdlib.h>
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36 #include <string.h>
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37
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38 #include <mint/osbind.h>
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39
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40 #include "SDL_events_c.h"
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41 #include "SDL_xbiosevents_c.h"
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42 #include "SDL_xbiosinterrupt_s.h"
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43
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44 /* Variables */
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45
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46 int SDL_AtariXbios_enabled=0;
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47
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48 /* Local variables */
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49
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50 static _KBDVECS *kbdvecs; /* Pointer to access system vectors */
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51 static Uint16 atari_prevmouseb; /* buttons */
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52
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53 /* Functions */
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54
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55 void SDL_AtariXbios_InstallVectors(int vectors_mask)
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56 {
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57 void *oldpile;
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58
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59 /* Clear variables */
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60 SDL_AtariXbios_mouseb =
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61 SDL_AtariXbios_mousex =
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62 SDL_AtariXbios_mousey =
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63 SDL_AtariXbios_joystick =
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64 atari_prevmouseb = 0;
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65
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66 /* Read IKBD vectors base */
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67 kbdvecs=Kbdvbase();
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68
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69 /* Go to supervisor mode */
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70 oldpile=(void *)Super(0);
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71
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72 /* Install our vectors */
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73 SDL_AtariXbios_Install(
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74 kbdvecs,
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75 (vectors_mask & ATARI_XBIOS_MOUSEEVENTS) ? SDL_AtariXbios_MouseVector : NULL,
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76 (vectors_mask & ATARI_XBIOS_JOYSTICKEVENTS) ? SDL_AtariXbios_JoystickVector : NULL
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77 );
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78
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79 /* Back to user mode */
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80 Super(oldpile);
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81
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82 SDL_AtariXbios_enabled=1;
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83 }
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84
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85 void SDL_AtariXbios_RestoreVectors(void)
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86 {
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87 void *oldpile;
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88
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89 /* Read IKBD vectors base */
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90 kbdvecs=Kbdvbase();
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91
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92 /* Go to supervisor mode */
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93 oldpile=(void *)Super(NULL);
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94
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95 /* Reinstall system vector */
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96 SDL_AtariXbios_Restore(kbdvecs);
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97
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98 /* Back to user mode */
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99 Super(oldpile);
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100 }
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101
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102 static int atari_GetButton(int button)
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103 {
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104 switch(button)
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105 {
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106 case 0:
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107 return SDL_BUTTON_RIGHT;
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108 break;
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109 case 1:
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110 default:
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111 return SDL_BUTTON_LEFT;
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112 break;
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113 }
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114 }
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115
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116 void SDL_AtariXbios_PostMouseEvents(_THIS)
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117 {
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118 /* Mouse motion ? */
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119 if (SDL_AtariXbios_mousex || SDL_AtariXbios_mousey) {
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120 SDL_PrivateMouseMotion(0, 1, SDL_AtariXbios_mousex, SDL_AtariXbios_mousey);
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121 SDL_AtariXbios_mousex = SDL_AtariXbios_mousey = 0;
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122 }
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123
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124 /* Mouse button ? */
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125 if (SDL_AtariXbios_mouseb != atari_prevmouseb) {
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126 int i;
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127
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128 for (i=0;i<2;i++) {
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129 int curbutton, prevbutton;
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130
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131 curbutton = SDL_AtariXbios_mouseb & (1<<i);
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132 prevbutton = atari_prevmouseb & (1<<i);
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133
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134 if (curbutton && !prevbutton) {
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135 SDL_PrivateMouseButton(SDL_PRESSED, atari_GetButton(i), 0, 0);
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136 }
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137 if (!curbutton && prevbutton) {
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138 SDL_PrivateMouseButton(SDL_RELEASED, atari_GetButton(i), 0, 0);
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139 }
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140 }
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141 atari_prevmouseb = SDL_AtariXbios_mouseb;
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142 }
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143 }