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annotate src/video/ataricommon/SDL_xbiosmouseevents.c @ 297:f6ffac90895c

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Updated copyright information for 2002
author Sam Lantinga <slouken@libsdl.org>
date Wed, 06 Mar 2002 11:23:08 +0000
parents c5010ab8ba35
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 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 * IKBD 6301 mouse vector
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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 <stdlib.h>
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35 #include <string.h>
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36 #include <mint/osbind.h>
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37
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38 #include "SDL_events_c.h"
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39 #include "SDL_xbiosmouseinterrupt_s.h"
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40
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41 static _KBDVECS *kbdvecs; /* Pointer to access vectors */
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42 static _KBDVECS sys_kbdvecs; /* Backup of system vectors */
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43
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44 /* Variables */
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45
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46 static Uint16 atari_prevmouseb; /* buttons */
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47
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48 void AtariXbios_InstallMouseVector(void)
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49 {
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50 void *oldpile;
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51
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52 /* Read IKBD vectors base */
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53 kbdvecs=Kbdvbase();
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54
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55 /* Go to supervisor mode */
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56 oldpile=(void *)Super(0);
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57
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58 /* Backup system vectors */
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59 memcpy(&sys_kbdvecs, kbdvecs, sizeof(_KBDVECS));
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60
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61 /* Install our vector */
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62 SDL_AtariXbiosMouseInstall(kbdvecs,SDL_AtariXbiosMouseVector);
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63
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64 /* Back to user mode */
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65 Super(oldpile);
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66
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67 /* Clear variables */
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68 SDL_AtariXbios_mouseb = SDL_AtariXbios_mousex = SDL_AtariXbios_mousey = 0;
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69 atari_prevmouseb = 0;
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70 }
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71
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72 void AtariXbios_RestoreMouseVector(void)
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73 {
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74 void *oldpile;
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75
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76 /* Go to supervisor mode */
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77 oldpile=(void *)Super(NULL);
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78
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79 /* Reinstall system vector */
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80 SDL_AtariXbiosMouseInstall(kbdvecs,sys_kbdvecs.mousevec);
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81
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82 /* Back to user mode */
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83 Super(oldpile);
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84 }
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85
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86 static int atari_GetButton(int button)
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87 {
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88 switch(button)
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89 {
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90 case 0:
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91 return SDL_BUTTON_RIGHT;
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92 break;
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93 case 1:
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94 default:
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95 return SDL_BUTTON_LEFT;
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96 break;
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97 }
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98 }
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99
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100 void AtariXbios_PostMouseEvents(_THIS)
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101 {
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102 /* Mouse motion ? */
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103 if (SDL_AtariXbios_mousex || SDL_AtariXbios_mousey) {
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104 SDL_PrivateMouseMotion(0, 1, SDL_AtariXbios_mousex, SDL_AtariXbios_mousey);
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105 SDL_AtariXbios_mousex = SDL_AtariXbios_mousey = 0;
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106 }
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107
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108 /* Mouse button ? */
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109 if (SDL_AtariXbios_mouseb != atari_prevmouseb) {
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110 int i;
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111
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112 for (i=0;i<2;i++) {
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113 int curbutton, prevbutton;
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114
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115 curbutton = SDL_AtariXbios_mouseb & (1<<i);
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116 prevbutton = atari_prevmouseb & (1<<i);
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117
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118 if (curbutton & !prevbutton) {
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119 SDL_PrivateMouseButton(SDL_PRESSED, atari_GetButton(i), 0, 0);
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120 }
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121 if (!curbutton & prevbutton) {
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122 SDL_PrivateMouseButton(SDL_RELEASED, atari_GetButton(i), 0, 0);
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123 }
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124 }
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125 atari_prevmouseb = SDL_AtariXbios_mouseb;
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126 }
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127 }