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annotate src/video/ataricommon/SDL_biosevents.c @ 3897:37dab4a917c4 SDL-1.2

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Check video driver mouse cursor pointers before using them
author Patrice Mandin <patmandin@gmail.com>
date Sun, 19 Nov 2006 14:07:32 +0000
parents bf1586b58ef2
children a1b03ba2fcd0
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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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 * Atari keyboard events manager, using BIOS
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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 /* Mint includes */
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31 #include <mint/osbind.h>
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32 #include <mint/cookie.h>
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33
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34 #include "../../events/SDL_sysevents.h"
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35 #include "../../events/SDL_events_c.h"
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36
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37 #include "SDL_atarikeys.h"
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38 #include "SDL_atarievents_c.h"
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39 #include "SDL_xbiosevents_c.h"
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40 #include "SDL_ataridevmouse_c.h"
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41
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42 static unsigned char bios_currentkeyboard[ATARIBIOS_MAXKEYS];
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43 static unsigned char bios_previouskeyboard[ATARIBIOS_MAXKEYS];
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44 static SDL_bool use_dev_mouse = SDL_FALSE;
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45
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46 static void UpdateSpecialKeys(int special_keys_state);
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47
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48 void AtariBios_InitOSKeymap(_THIS)
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49 {
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50 int i, vectors_mask;
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51 unsigned long dummy;
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52
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53 SDL_memset(bios_currentkeyboard, 0, sizeof(bios_currentkeyboard));
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54 SDL_memset(bios_previouskeyboard, 0, sizeof(bios_previouskeyboard));
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55
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56 use_dev_mouse = (SDL_AtariDevMouse_Open()!=0) ? SDL_TRUE : SDL_FALSE;
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57
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58 vectors_mask = ATARI_XBIOS_JOYSTICKEVENTS; /* XBIOS joystick events */
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59 if (!use_dev_mouse) {
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60 vectors_mask |= ATARI_XBIOS_MOUSEEVENTS; /* XBIOS mouse events */
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61 }
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62 /* if (Getcookie(C_MiNT, &dummy)==C_FOUND) {
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63 vectors_mask = 0;
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64 }*/
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65
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66 SDL_AtariXbios_InstallVectors(vectors_mask);
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67 }
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68
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69 void AtariBios_PumpEvents(_THIS)
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70 {
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71 int i;
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72 SDL_keysym keysym;
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73
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74 /* Update pressed keys */
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75 SDL_memset(bios_currentkeyboard, 0, ATARIBIOS_MAXKEYS);
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76
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77 while (Bconstat(_CON)) {
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78 unsigned long key_pressed;
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79 key_pressed=Bconin(_CON);
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80 bios_currentkeyboard[(key_pressed>>16)&(ATARIBIOS_MAXKEYS-1)]=0xFF;
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81 }
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82
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83 /* Read special keys */
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84 UpdateSpecialKeys(Kbshift(-1));
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85
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86 /* Now generate events */
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87 for (i=0; i<ATARIBIOS_MAXKEYS; i++) {
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88 /* Key pressed ? */
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89 if (bios_currentkeyboard[i] && !bios_previouskeyboard[i])
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90 SDL_PrivateKeyboard(SDL_PRESSED,
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91 SDL_Atari_TranslateKey(i, &keysym, SDL_TRUE));
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92
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93 /* Key unpressed ? */
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94 if (bios_previouskeyboard[i] && !bios_currentkeyboard[i])
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95 SDL_PrivateKeyboard(SDL_RELEASED,
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96 SDL_Atari_TranslateKey(i, &keysym, SDL_FALSE));
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97 }
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98
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99 if (use_dev_mouse) {
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100 SDL_AtariDevMouse_PostMouseEvents(this, SDL_TRUE);
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101 } else {
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102 SDL_AtariXbios_PostMouseEvents(this, SDL_TRUE);
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103 }
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104
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105 /* Will be previous table */
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106 SDL_memcpy(bios_previouskeyboard, bios_currentkeyboard, sizeof(bios_previouskeyboard));
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107 }
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108
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109 static void UpdateSpecialKeys(int special_keys_state)
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110 {
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111 #define UPDATE_SPECIAL_KEYS(numbit,scancode) \
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112 { \
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113 if (special_keys_state & (1<<(numbit))) { \
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114 bios_currentkeyboard[scancode]=0xFF; \
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115 } \
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116 }
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117
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118 UPDATE_SPECIAL_KEYS(K_RSHIFT, SCANCODE_RIGHTSHIFT);
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119 UPDATE_SPECIAL_KEYS(K_LSHIFT, SCANCODE_LEFTSHIFT);
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120 UPDATE_SPECIAL_KEYS(K_CTRL, SCANCODE_LEFTCONTROL);
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121 UPDATE_SPECIAL_KEYS(K_ALT, SCANCODE_LEFTALT);
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122 UPDATE_SPECIAL_KEYS(K_CAPSLOCK, SCANCODE_CAPSLOCK);
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123 }
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124
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125 void AtariBios_ShutdownEvents(void)
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126 {
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127 SDL_AtariXbios_RestoreVectors();
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128 if (use_dev_mouse) {
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129 SDL_AtariDevMouse_Close();
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130 }
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131 }