1 /* 2 SDL - Simple DirectMedia Layer 3 Copyright (C) 1997-2006 Sam Lantinga 4 5 This library is free software; you can redistribute it and/or 6 modify it under the terms of the GNU Lesser General Public 7 License as published by the Free Software Foundation; either 8 version 2.1 of the License, or (at your option) any later version. 9 10 This library is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 Lesser General Public License for more details. 14 15 You should have received a copy of the GNU Lesser General Public 16 License along with this library; if not, write to the Free Software 17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 18 19 Sam Lantinga 20 slouken (at) libsdl.org 21 */ 22 #include "SDL_config.h" 23 24 /* 25 * XBIOS mouse & joystick vectors 26 * 27 * Patrice Mandin 28 */ 29 30 #include <mint/osbind.h> 31 32 #include "../../events/SDL_events_c.h" 33 #include "SDL_xbiosevents_c.h" 34 #include "SDL_xbiosinterrupt_s.h" 35 36 /* Variables */ 37 38 int SDL_AtariXbios_enabled=0; 39 40 /* Local variables */ 41 42 static _KBDVECS *kbdvecs; /* Pointer to access system vectors */ 43 static Uint16 atari_prevmouseb; /* buttons */ 44 45 /* Functions */ 46 47 void SDL_AtariXbios_InstallVectors(int vectors_mask) 48 { 49 void *oldpile; 50 51 /* Clear variables */ 52 SDL_AtariXbios_mouselock = 53 SDL_AtariXbios_mouseb = 54 SDL_AtariXbios_mousex = 55 SDL_AtariXbios_mousey = 56 SDL_AtariXbios_joystick = 57 atari_prevmouseb = 0; 58 59 if (vectors_mask==0) { 60 SDL_AtariXbios_enabled=0; 61 return; 62 } 63 64 /* Read IKBD vectors base */ 65 kbdvecs=Kbdvbase(); 66 67 /* Go to supervisor mode */ 68 oldpile=(void *)Super(0); 69 70 /* Install our vectors */ 71 SDL_AtariXbios_Install( 72 kbdvecs, 73 (vectors_mask & ATARI_XBIOS_MOUSEEVENTS) ? SDL_AtariXbios_MouseVector : NULL, 74 (vectors_mask & ATARI_XBIOS_JOYSTICKEVENTS) ? SDL_AtariXbios_JoystickVector : NULL 75 ); 76 77 /* Back to user mode */ 78 Super(oldpile); 79 80 SDL_AtariXbios_enabled=1; 81 } 82 83 void SDL_AtariXbios_RestoreVectors(void) 84 { 85 void *oldpile; 86 87 if (SDL_AtariXbios_enabled==0) { 88 return; 89 } 90 91 /* Read IKBD vectors base */ 92 kbdvecs=Kbdvbase(); 93 94 /* Go to supervisor mode */ 95 oldpile=(void *)Super(NULL); 96 97 /* Reinstall system vector */ 98 SDL_AtariXbios_Restore(kbdvecs); 99 100 /* Back to user mode */ 101 Super(oldpile); 102 } 103 104 static int atari_GetButton(int button) 105 { 106 switch(button) 107 { 108 case 0: 109 return SDL_BUTTON_RIGHT; 110 break; 111 case 1: 112 default: 113 return SDL_BUTTON_LEFT; 114 break; 115 } 116 } 117 118 void SDL_AtariXbios_PostMouseEvents(_THIS, SDL_bool buttonEvents) 119 { 120 if (SDL_AtariXbios_enabled==0) { 121 return; 122 } 123 124 /* Mouse motion ? */ 125 if (SDL_AtariXbios_mousex || SDL_AtariXbios_mousey) { 126 SDL_PrivateMouseMotion(0, 1, SDL_AtariXbios_mousex, SDL_AtariXbios_mousey); 127 SDL_AtariXbios_mousex = SDL_AtariXbios_mousey = 0; 128 } 129 130 /* Mouse button ? */ 131 if (buttonEvents && (SDL_AtariXbios_mouseb != atari_prevmouseb)) { 132 int i; 133 134 for (i=0;i<2;i++) { 135 int curbutton, prevbutton; 136 137 curbutton = SDL_AtariXbios_mouseb & (1<<i); 138 prevbutton = atari_prevmouseb & (1<<i); 139 140 if (curbutton && !prevbutton) { 141 SDL_PrivateMouseButton(SDL_PRESSED, atari_GetButton(i), 0, 0); 142 } 143 if (!curbutton && prevbutton) { 144 SDL_PrivateMouseButton(SDL_RELEASED, atari_GetButton(i), 0, 0); 145 } 146 } 147 atari_prevmouseb = SDL_AtariXbios_mouseb; 148 } 149 } 150 151 void SDL_AtariXbios_LockMousePosition(SDL_bool lockPosition) 152 { 153 SDL_AtariXbios_mouselock = lockPosition; 154 } 155
