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annotate src/video/ataricommon/SDL_xbiosevents.c @ 1267:fdc7ef6ecab4

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Correctly manage mouse relative motion
author Patrice Mandin <patmandin@gmail.com>
date Wed, 25 Jan 2006 20:36:21 +0000
parents a8068adf156b
children a201a8c62522
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 if (vectors_mask==0) {
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67 SDL_AtariXbios_enabled=0;
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68 return;
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69 }
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70
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71 /* Read IKBD vectors base */
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72 kbdvecs=Kbdvbase();
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73
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74 /* Go to supervisor mode */
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75 oldpile=(void *)Super(0);
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76
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77 /* Install our vectors */
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78 SDL_AtariXbios_Install(
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79 kbdvecs,
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80 (vectors_mask & ATARI_XBIOS_MOUSEEVENTS) ? SDL_AtariXbios_MouseVector : NULL,
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81 (vectors_mask & ATARI_XBIOS_JOYSTICKEVENTS) ? SDL_AtariXbios_JoystickVector : NULL
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82 );
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83
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84 /* Back to user mode */
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85 Super(oldpile);
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86
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87 SDL_AtariXbios_enabled=1;
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88 }
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89
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90 void SDL_AtariXbios_RestoreVectors(void)
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91 {
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92 void *oldpile;
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93
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94 if (SDL_AtariXbios_enabled==0) {
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95 return;
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96 }
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97
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98 /* Read IKBD vectors base */
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99 kbdvecs=Kbdvbase();
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100
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101 /* Go to supervisor mode */
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102 oldpile=(void *)Super(NULL);
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103
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104 /* Reinstall system vector */
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105 SDL_AtariXbios_Restore(kbdvecs);
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106
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107 /* Back to user mode */
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108 Super(oldpile);
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109 }
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110
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111 static int atari_GetButton(int button)
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112 {
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113 switch(button)
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114 {
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115 case 0:
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116 return SDL_BUTTON_RIGHT;
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117 break;
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118 case 1:
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119 default:
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120 return SDL_BUTTON_LEFT;
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121 break;
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122 }
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123 }
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124
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125 void SDL_AtariXbios_PostMouseEvents(_THIS)
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126 {
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127 if (SDL_AtariXbios_enabled==0) {
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128 return;
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129 }
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130
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131 /* Mouse motion ? */
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132 if (SDL_AtariXbios_mousex || SDL_AtariXbios_mousey) {
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133 SDL_PrivateMouseMotion(0, 1, SDL_AtariXbios_mousex, SDL_AtariXbios_mousey);
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134 SDL_AtariXbios_mousex = SDL_AtariXbios_mousey = 0;
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135 }
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136
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137 /* Mouse button ? */
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138 if (SDL_AtariXbios_mouseb != atari_prevmouseb) {
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139 int i;
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140
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141 for (i=0;i<2;i++) {
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142 int curbutton, prevbutton;
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143
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144 curbutton = SDL_AtariXbios_mouseb & (1<<i);
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145 prevbutton = atari_prevmouseb & (1<<i);
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146
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147 if (curbutton && !prevbutton) {
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148 SDL_PrivateMouseButton(SDL_PRESSED, atari_GetButton(i), 0, 0);
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149 }
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e9278438fb3b Date: Thu, 04 Apr 2002 13:27:36 GMT+1
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150 if (!curbutton && prevbutton) {
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151 SDL_PrivateMouseButton(SDL_RELEASED, atari_GetButton(i), 0, 0);
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152 }
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153 }
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154 atari_prevmouseb = SDL_AtariXbios_mouseb;
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155 }
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156 }