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| Rev | Author | Line No. | Line |
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| 538 | mauro | 1 | /* |
| 2 | * Project: S.Ha.R.K. |
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| 3 | * |
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| 4 | * Coordinators: |
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| 5 | * Giorgio Buttazzo <giorgio@sssup.it> |
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| 6 | * Paolo Gai <pj@gandalf.sssup.it> |
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| 7 | * |
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| 8 | * Authors : |
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| 9 | * Paolo Gai <pj@gandalf.sssup.it> |
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| 10 | * Massimiliano Giorgi <massy@gandalf.sssup.it> |
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| 11 | * Luca Abeni <luca@gandalf.sssup.it> |
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| 12 | * Mauro Marinoni <mauro.marinoni@unipv.it> |
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| 13 | * (see the web pages for full authors list) |
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| 14 | * |
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| 15 | * ReTiS Lab (Scuola Superiore S.Anna - Pisa - Italy) |
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| 16 | * |
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| 17 | * http://www.sssup.it |
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| 18 | * http://retis.sssup.it |
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| 19 | * http://shark.sssup.it |
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| 20 | */ |
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| 21 | |||
| 22 | /* |
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| 23 | * |
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| 24 | * Auto Pointer management |
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| 25 | * |
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| 26 | */ |
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| 27 | |||
| 28 | #include <kernel/kern.h> |
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| 1034 | mauro | 29 | #include <kernel/int_sem.h> |
| 538 | mauro | 30 | |
| 31 | #include "../include/drivers/shark_input26.h" |
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| 32 | #include "../include/drivers/shark_mouse26.h" |
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| 33 | |||
| 34 | //#define CURTXT_DEBUG |
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| 35 | |||
| 36 | /* these variables are managed by this module but MUST be declared |
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| 37 | * into shark_mouse.c to prevent implicit inclusion of this module |
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| 38 | * when a user link the mouse library |
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| 39 | */ |
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| 40 | extern MOUSE_HANDLER show_mouse_handler; |
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| 41 | extern MOUSE_HANDLER user_mouse_handler; |
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| 42 | |||
| 43 | /* a mutex semaphore */ |
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| 1034 | mauro | 44 | static int mcur_mutex_init = 0; |
| 45 | static internal_sem_t mutex; |
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| 538 | mauro | 46 | |
| 47 | /* Setup function */ |
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| 48 | int _mouse_cursor_init(int cmd, void(*my_show_cursor)(int, int), void(*my_restore_cursor)(int, int)); |
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| 49 | |||
| 50 | /* |
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| 51 | * |
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| 52 | * autocursor mouse handler |
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| 53 | * |
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| 54 | */ |
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| 55 | |||
| 56 | /* >=0 hide cursor; <0 show cursor */ |
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| 57 | static int mouse_cursor_state = 0; |
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| 58 | |||
| 59 | /* mouse status */ |
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| 549 | mauro | 60 | int autocursormode = 0; |
| 538 | mauro | 61 | |
| 62 | /* saved mouse_position */ |
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| 63 | static int saved_x, saved_y; |
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| 64 | |||
| 65 | static void dummy(int x,int y){} |
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| 66 | |||
| 67 | static void (*show_cursor)(int x, int y) = dummy; |
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| 68 | static void (*restore_cursor)(int x, int y) = dummy; |
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| 69 | |||
| 70 | /* those are the 4 mouse handlers */ |
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| 71 | /* AUTOOFF -> call the user handler with no mouse displayed */ |
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| 72 | /* WITHOUTSEM -> does not use a mutex semaphore */ |
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| 73 | |||
| 74 | /* with no flags */ |
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| 75 | static void autocursor_mouse_handler_1(MOUSE_EVT *event) |
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| 76 | { |
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| 77 | #ifdef CURTXT_DEBUG |
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| 78 | printk(KERN_DEBUG "mcurtxt.c: autocursor_mouse_handler_1\n"); |
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| 79 | #endif |
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| 80 | |||
| 81 | if (user_mouse_handler != NULL) |
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| 82 | user_mouse_handler(event); |
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| 83 | |||
| 1034 | mauro | 84 | internal_sem_wait(&mutex); |
| 538 | mauro | 85 | if ( (mouse_cursor_state < 0) && (event->x != saved_x || event->y != saved_y)) { |
| 86 | restore_cursor(saved_x, saved_y); |
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| 87 | saved_x = event->x; |
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| 88 | saved_y = event->y; |
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| 89 | show_cursor(saved_x, saved_y); |
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| 90 | } |
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| 1034 | mauro | 91 | internal_sem_post(&mutex); |
| 538 | mauro | 92 | } |
| 93 | |||
| 94 | /* with WITHOUTSEM flag*/ |
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| 95 | static void autocursor_mouse_handler_2(MOUSE_EVT *event) |
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| 96 | { |
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| 97 | #ifdef CURTXT_DEBUG |
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| 98 | printk(KERN_DEBUG "mcurtxt.c: autocursor_mouse_handler_2\n"); |
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| 99 | #endif |
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| 100 | if (user_mouse_handler != NULL) |
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| 101 | user_mouse_handler(event); |
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| 102 | |||
| 103 | if ( (mouse_cursor_state < 0) && (event->x != saved_x || event->y != saved_y)) { |
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| 104 | restore_cursor(saved_x, saved_y); |
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| 105 | saved_x = event->x; |
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| 106 | saved_y = event->y; |
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| 107 | show_cursor(saved_x, saved_y); |
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| 108 | } |
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| 109 | } |
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| 110 | |||
| 111 | /* with AUTOOFF flag*/ |
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| 112 | static void autocursor_mouse_handler_3(MOUSE_EVT *event) |
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| 113 | { |
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| 114 | #ifdef CURTXT_DEBUG |
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| 115 | printk(KERN_DEBUG "mcurtxt.c: autocursor_mouse_handler_3\n"); |
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| 116 | #endif |
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| 1034 | mauro | 117 | internal_sem_wait(&mutex); |
| 538 | mauro | 118 | |
| 119 | if (mouse_cursor_state < 0) { |
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| 120 | restore_cursor(saved_x, saved_y); |
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| 121 | saved_x = event->x; |
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| 122 | saved_y = event->y; |
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| 123 | if (user_mouse_handler != NULL) |
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| 124 | user_mouse_handler(event); |
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| 125 | show_cursor(saved_x, saved_y); |
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| 126 | } else if (user_mouse_handler != NULL) |
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| 127 | user_mouse_handler(event); |
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| 128 | |||
| 1034 | mauro | 129 | internal_sem_post(&mutex); |
| 538 | mauro | 130 | } |
| 131 | |||
| 132 | /* with WITHOUTSEM & AUTOOFF flags */ |
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| 133 | static void autocursor_mouse_handler_4(MOUSE_EVT *event) |
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| 134 | { |
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| 135 | #ifdef CURTXT_DEBUG |
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| 136 | printk(KERN_DEBUG "mcurtxt.c: autocursor_mouse_handler_4\n"); |
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| 137 | #endif |
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| 138 | if (mouse_cursor_state < 0) { |
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| 139 | restore_cursor(saved_x, saved_y); |
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| 140 | saved_x = event->x; |
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| 141 | saved_y = event->y; |
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| 142 | if (user_mouse_handler != NULL) |
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| 143 | user_mouse_handler(event); |
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| 144 | show_cursor(saved_x, saved_y); |
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| 145 | } else if (user_mouse_handler != NULL) |
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| 146 | user_mouse_handler(event); |
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| 147 | } |
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| 148 | |||
| 149 | /* -------------- |
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| 150 | * TXT management |
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| 151 | * -------------- |
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| 152 | */ |
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| 153 | |||
| 154 | /* text cursor shape */ |
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| 155 | #define DEFAULTTXTSHAPE 0x7700ffff |
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| 156 | static DWORD saved_txtshape = DEFAULTTXTSHAPE; |
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| 157 | static BYTE attr_andmask, attr_xormask; |
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| 158 | static BYTE c_andmask, c_xormask; |
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| 159 | |||
| 160 | /* saved values */ |
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| 161 | static BYTE saved_attr, saved_c; |
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| 162 | |||
| 163 | /* show txt cursor */ |
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| 164 | void show_txt_cursor(int x, int y) |
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| 165 | { |
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| 166 | int attr,c; |
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| 167 | |||
| 168 | getc_xy(x, y, &saved_attr, &saved_c); |
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| 169 | attr = (saved_attr & attr_andmask) ^ attr_xormask; |
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| 170 | c = (saved_c & c_andmask) ^ c_xormask; |
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| 171 | putc_xy(x, y, attr, c); |
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| 172 | } |
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| 173 | |||
| 174 | /* restore txt cursor */ |
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| 175 | static void restore_txt_cursor(int x, int y) |
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| 176 | { |
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| 177 | putc_xy(x, y, saved_attr, saved_c); |
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| 178 | } |
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| 179 | |||
| 180 | /* define text shape */ |
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| 181 | int mouse_txtshape(DWORD img) |
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| 182 | { |
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| 183 | int cond; |
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| 184 | |||
| 185 | if (img == DEFAULT) |
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| 186 | img = DEFAULTTXTSHAPE; |
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| 187 | |||
| 188 | cond = ( (autocursormode & STATUSMASK) == ENABLE && (autocursormode & TXTCURSOR) == TXTCURSOR ); |
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| 189 | |||
| 190 | if (cond) |
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| 191 | restore_txt_cursor(saved_x, saved_y); |
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| 192 | |||
| 193 | saved_txtshape = img; |
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| 194 | c_andmask = img & 0xff; |
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| 195 | attr_andmask = (img & 0xff00) >> 8; |
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| 196 | c_xormask = (img & 0xff0000) >> 16; |
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| 197 | attr_xormask = (img & 0xff000000) >> 24; |
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| 198 | |||
| 199 | #ifdef CURTXT_DEBUG |
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| 200 | printk(KERN_DEBUG "MouseTxt_Shape: %x %x %x %x\n", c_andmask, attr_andmask, c_xormask, attr_xormask); |
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| 201 | #endif |
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| 202 | if (cond) |
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| 203 | show_txt_cursor(saved_x, saved_y); |
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| 204 | |||
| 205 | return 0; |
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| 206 | } |
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| 207 | |||
| 208 | /* |
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| 209 | * User interface to autocursor functions |
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| 210 | */ |
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| 211 | |||
| 212 | /* display the cursor */ |
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| 213 | #define MOUSE_ON() { \ |
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| 214 | int unused; \ |
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| 215 | unsigned long lunused; \ |
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| 216 | mouse_cursor_state--; \ |
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| 217 | if (mouse_cursor_state == -1) { \ |
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| 549 | mauro | 218 | mouse_getposition(&saved_x, &saved_y, &unused, &lunused); \ |
| 538 | mauro | 219 | show_cursor(saved_x, saved_y); \ |
| 220 | } \ |
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| 221 | } |
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| 222 | |||
| 223 | static void mouse_on_sem(void) |
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| 224 | { |
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| 1034 | mauro | 225 | internal_sem_wait(&mutex); |
| 538 | mauro | 226 | MOUSE_ON(); |
| 1034 | mauro | 227 | internal_sem_post(&mutex); |
| 538 | mauro | 228 | } |
| 229 | |||
| 230 | static void mouse_on_nosem(void) |
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| 231 | { |
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| 232 | MOUSE_ON(); |
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| 233 | } |
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| 234 | |||
| 235 | void (*mouse_on)(void)=mouse_on_nosem; |
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| 236 | |||
| 237 | /* hide the cursor */ |
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| 238 | #define MOUSE_OFF() { \ |
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| 239 | mouse_cursor_state++; \ |
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| 240 | if (mouse_cursor_state == 0) \ |
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| 241 | restore_cursor(saved_x, saved_y); \ |
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| 242 | } |
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| 243 | |||
| 244 | void mouse_off_sem(void) |
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| 245 | { |
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| 1034 | mauro | 246 | internal_sem_wait(&mutex); |
| 538 | mauro | 247 | MOUSE_OFF(); |
| 1034 | mauro | 248 | internal_sem_post(&mutex); |
| 538 | mauro | 249 | } |
| 250 | |||
| 251 | void mouse_off_nosem(void) |
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| 252 | { |
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| 253 | MOUSE_OFF(); |
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| 254 | } |
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| 255 | |||
| 256 | void (*mouse_off)(void) = mouse_off_nosem; |
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| 257 | |||
| 258 | static MOUSE_HANDLER wich_handler(int cmd) |
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| 259 | { |
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| 260 | if ( ((cmd & WITHOUTSEM) == WITHOUTSEM) && ((cmd & AUTOOFF) == AUTOOFF) ) |
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| 261 | return autocursor_mouse_handler_4; |
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| 262 | if ((cmd & WITHOUTSEM) == WITHOUTSEM) |
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| 263 | return autocursor_mouse_handler_2; |
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| 264 | if ((cmd & AUTOOFF) == AUTOOFF) |
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| 265 | return autocursor_mouse_handler_3; |
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| 266 | return autocursor_mouse_handler_1; |
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| 267 | } |
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| 268 | |||
| 269 | int mouse_txtcursor(int cmd) |
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| 270 | { |
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| 271 | mouse_txtshape(saved_txtshape); |
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| 272 | return _mouse_cursor_init(cmd|TXTCURSOR, show_txt_cursor, restore_txt_cursor); |
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| 273 | } |
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| 274 | |||
| 275 | /* Generic functions, both for text & graphics mode */ |
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| 276 | |||
| 277 | int _mouse_cursor_init(int cmd, void(*my_show_cursor)(int, int), void(*my_restore_cursor)(int, int)) |
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| 278 | { |
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| 1034 | mauro | 279 | if (mcur_mutex_init == 0) { |
| 280 | internal_sem_init(&mutex, 1); |
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| 281 | mcur_mutex_init = 1; |
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| 538 | mauro | 282 | } |
| 283 | |||
| 284 | #ifdef CURTXT_DEBUG |
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| 285 | printk(KERN_DEBUG "mouse_cursor_init: command %x\n", cmd); |
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| 286 | #endif |
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| 287 | |||
| 288 | switch (cmd & STATUSMASK) { |
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| 289 | case DISABLE: |
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| 290 | //show_mouse_handler = user_mouse_handler; |
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| 291 | show_mouse_handler = NULL; |
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| 292 | restore_cursor(saved_x, saved_y); |
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| 293 | show_cursor = dummy; |
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| 294 | restore_cursor = dummy; |
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| 295 | mouse_cursor_state = 0; |
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| 296 | break; |
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| 297 | case ENABLE: |
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| 298 | restore_cursor(saved_x, saved_y); |
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| 299 | restore_cursor = my_restore_cursor; |
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| 300 | show_cursor = my_show_cursor; |
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| 301 | if ((autocursormode & STATUSMASK) == DISABLE) { |
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| 302 | //user_mouse_handler = show_mouse_handler; |
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| 303 | show_mouse_handler = wich_handler(cmd); |
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| 304 | } |
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| 305 | mouse_cursor_state = -1; |
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| 306 | break; |
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| 307 | default: |
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| 308 | return -1; |
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| 309 | } |
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| 310 | |||
| 311 | autocursormode = cmd; |
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| 312 | |||
| 313 | if ((autocursormode & STATUSMASK) == ENABLE) { |
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| 314 | if ((cmd & WITHOUTSEM) == WITHOUTSEM) { |
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| 315 | mouse_on = mouse_on_nosem; |
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| 316 | mouse_off = mouse_off_nosem; |
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| 317 | } else { |
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| 318 | mouse_on = mouse_on_sem; |
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| 319 | mouse_off = mouse_off_sem; |
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| 320 | } |
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| 321 | } |
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| 322 | |||
| 323 | return 0; |
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| 324 | } |
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| 325 | |||
| 326 | void _mouse_cursor_getposition(int *xptr, int *yptr) |
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| 327 | { |
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| 328 | *xptr = saved_x; |
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| 329 | *yptr = saved_y; |
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| 330 | } |