annotate src/video/ataricommon/SDL_xbiosevents.c @ 1420:2405517b5eab

Added preliminary support for MiNT /dev/mouse driver (disabled atm)
author Patrice Mandin <patmandin@gmail.com>
date Thu, 23 Feb 2006 21:51:10 +0000
parents d910939febfa
children 782fd950bd46 c121d94672cb be01e0b82dca
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 * 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 SDL_AtariXbios_InstallVectors(int vectors_mask)
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48 {
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49 void *oldpile;
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50
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51 /* Clear variables */
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52 SDL_AtariXbios_mouseb =
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53 SDL_AtariXbios_mousex =
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54 SDL_AtariXbios_mousey =
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55 SDL_AtariXbios_joystick =
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56 atari_prevmouseb = 0;
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57
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58 if (vectors_mask==0) {
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59 SDL_AtariXbios_enabled=0;
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60 return;
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61 }
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62
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63 /* Read IKBD vectors base */
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64 kbdvecs=Kbdvbase();
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65
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66 /* Go to supervisor mode */
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67 oldpile=(void *)Super(0);
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68
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69 /* Install our vectors */
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70 SDL_AtariXbios_Install(
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71 kbdvecs,
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72 (vectors_mask & ATARI_XBIOS_MOUSEEVENTS) ? SDL_AtariXbios_MouseVector : NULL,
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73 (vectors_mask & ATARI_XBIOS_JOYSTICKEVENTS) ? SDL_AtariXbios_JoystickVector : NULL
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74 );
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75
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76 /* Back to user mode */
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77 Super(oldpile);
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78
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79 SDL_AtariXbios_enabled=1;
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80 }
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81
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82 void SDL_AtariXbios_RestoreVectors(void)
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83 {
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84 void *oldpile;
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85
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86 if (SDL_AtariXbios_enabled==0) {
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87 return;
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88 }
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89
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90 /* Read IKBD vectors base */
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91 kbdvecs=Kbdvbase();
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92
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93 /* Go to supervisor mode */
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94 oldpile=(void *)Super(NULL);
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95
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96 /* Reinstall system vector */
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97 SDL_AtariXbios_Restore(kbdvecs);
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98
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99 /* Back to user mode */
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100 Super(oldpile);
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101 }
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102
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103 static int atari_GetButton(int button)
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104 {
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105 switch(button)
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106 {
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107 case 0:
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108 return SDL_BUTTON_RIGHT;
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109 break;
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110 case 1:
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111 default:
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112 return SDL_BUTTON_LEFT;
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113 break;
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114 }
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115 }
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116
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117 void SDL_AtariXbios_PostMouseEvents(_THIS, SDL_bool buttonEvents)
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118 {
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119 if (SDL_AtariXbios_enabled==0) {
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120 return;
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121 }
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122
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123 /* Mouse motion ? */
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124 if (SDL_AtariXbios_mousex || SDL_AtariXbios_mousey) {
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125 SDL_PrivateMouseMotion(0, 1, SDL_AtariXbios_mousex, SDL_AtariXbios_mousey);
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126 SDL_AtariXbios_mousex = SDL_AtariXbios_mousey = 0;
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127 }
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128
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129 /* Mouse button ? */
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130 if (buttonEvents && (SDL_AtariXbios_mouseb != atari_prevmouseb)) {
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131 int i;
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132
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133 for (i=0;i<2;i++) {
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134 int curbutton, prevbutton;
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135
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136 curbutton = SDL_AtariXbios_mouseb & (1<<i);
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137 prevbutton = atari_prevmouseb & (1<<i);
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138
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139 if (curbutton && !prevbutton) {
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140 SDL_PrivateMouseButton(SDL_PRESSED, atari_GetButton(i), 0, 0);
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141 }
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142 if (!curbutton && prevbutton) {
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143 SDL_PrivateMouseButton(SDL_RELEASED, atari_GetButton(i), 0, 0);
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diff changeset
144 }
9c6613983e85 Atari port cleanups from Patrice
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
145 }
9c6613983e85 Atari port cleanups from Patrice
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
146 atari_prevmouseb = SDL_AtariXbios_mouseb;
9c6613983e85 Atari port cleanups from Patrice
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
147 }
9c6613983e85 Atari port cleanups from Patrice
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
148 }