| 1 | /* |
| 2 | SDL - Simple DirectMedia Layer |
| 3 | Copyright (C) 1997-2009 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@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 | } |