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105 | pj | 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 | * (see the web pages for full authors list) |
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13 | * |
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14 | * ReTiS Lab (Scuola Superiore S.Anna - Pisa - Italy) |
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15 | * |
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16 | * http://www.sssup.it |
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17 | * http://retis.sssup.it |
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18 | * http://shark.sssup.it |
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19 | */ |
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20 | |||
21 | /** |
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22 | ------------ |
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23 | CVS : $Id: mcurtxt.c,v 1.1 2003-03-24 10:54:17 pj Exp $ |
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24 | |||
25 | File: $File$ |
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26 | Revision: $Revision: 1.1 $ |
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27 | Last update: $Date: 2003-03-24 10:54:17 $ |
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28 | ------------ |
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29 | |||
30 | Author: Massimiliano Giorgi |
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31 | Date: 24/Giu/99 |
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32 | |||
33 | **/ |
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34 | |||
35 | /* |
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36 | * Copyright (C) 2000 Paolo Gai |
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37 | * |
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38 | * This program is free software; you can redistribute it and/or modify |
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39 | * it under the terms of the GNU General Public License as published by |
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40 | * the Free Software Foundation; either version 2 of the License, or |
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41 | * (at your option) any later version. |
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42 | * |
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43 | * This program is distributed in the hope that it will be useful, |
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44 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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45 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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46 | * GNU General Public License for more details. |
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47 | * |
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48 | * You should have received a copy of the GNU General Public License |
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49 | * along with this program; if not, write to the Free Software |
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50 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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51 | * |
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52 | */ |
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53 | |||
54 | /* |
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55 | * |
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56 | * Auto Pointer management |
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57 | * |
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58 | */ |
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59 | |||
60 | #include <kernel/kern.h> |
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61 | //#include <sys/sys.h> |
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62 | //#include <sys/vm.h> |
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63 | #include <drivers/mouse.h> |
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64 | //#include <cons.h> |
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65 | #include "_mouse.h" |
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66 | #include <modules/sem.h> |
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67 | |||
68 | /* these are the actual mouse coordinates (defined into mouse.c) */ |
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69 | extern short int mouse_x; |
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70 | extern short int mouse_y; |
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71 | |||
72 | /* these variables are managed by this module but MUST be declared |
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73 | * into mouse.c to prevent implicit inclusion of this module |
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74 | * when a user link the mouse library |
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75 | */ |
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76 | |||
77 | extern MOUSE_HANDLER mouse_handler; |
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78 | extern MOUSE_HANDLER user_mouse_handler; |
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79 | extern int autocursormode; |
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80 | |||
81 | /* a mutex semaphore */ |
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82 | static sem_t mutex=-1; |
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83 | |||
84 | /* |
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85 | * |
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86 | * autocursor mouse handler |
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87 | * |
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88 | */ |
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89 | |||
90 | /* >=0 hide cursor; <0 show cursor */ |
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91 | static int mouse_cursor_state=-1; |
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92 | |||
93 | /* saved mouse_position */ |
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94 | static int saved_x,saved_y; |
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95 | |||
96 | static void dummy(int x,int y) |
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97 | {} |
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98 | |||
99 | static void (*show_cursor)(int x, int y)=dummy; |
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100 | static void (*restore_cursor)(int x, int y)=dummy; |
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101 | |||
102 | /* those are the 4 mouse handlers */ |
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103 | /* AUTOOFF -> call the user handler with no mouse displayed */ |
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104 | /* WITHOUTSEM -> does not use a mutex semaphore */ |
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105 | |||
106 | /* with no flags */ |
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107 | static void autocursor_mouse_handler_1(MOUSE_EVT *event) |
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108 | { |
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109 | if (user_mouse_handler!=NULL) user_mouse_handler(event); |
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110 | |||
111 | sem_wait(&mutex); |
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112 | if (mouse_cursor_state<0&&(event->x!=saved_x||event->y!=saved_y)) { |
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113 | restore_cursor(saved_x,saved_y); |
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114 | saved_x=event->x; |
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115 | saved_y=event->y; |
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116 | show_cursor(saved_x,saved_y); |
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117 | } |
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118 | sem_post(&mutex); |
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119 | } |
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120 | |||
121 | /* with WITHOUTSEM flag*/ |
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122 | static void autocursor_mouse_handler_2(MOUSE_EVT *event) |
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123 | { |
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124 | if (user_mouse_handler!=NULL) user_mouse_handler(event); |
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125 | |||
126 | if (mouse_cursor_state<0&&(event->x!=saved_x||event->y!=saved_y)) { |
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127 | restore_cursor(saved_x,saved_y); |
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128 | saved_x=event->x; |
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129 | saved_y=event->y; |
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130 | show_cursor(saved_x,saved_y); |
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131 | } |
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132 | } |
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133 | |||
134 | /* with AUTOOFF flag*/ |
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135 | static void autocursor_mouse_handler_3(MOUSE_EVT *event) |
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136 | { |
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137 | sem_wait(&mutex); |
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138 | |||
139 | if (mouse_cursor_state<0) { |
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140 | restore_cursor(saved_x,saved_y); |
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141 | saved_x=event->x; |
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142 | saved_y=event->y; |
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143 | if (user_mouse_handler!=NULL) user_mouse_handler(event); |
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144 | show_cursor(saved_x,saved_y); |
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145 | } else |
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146 | if (user_mouse_handler!=NULL) user_mouse_handler(event); |
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147 | |||
148 | sem_post(&mutex); |
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149 | } |
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150 | |||
151 | /* with WITHOUTSEM & AUTOOFF flags */ |
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152 | static void autocursor_mouse_handler_4(MOUSE_EVT *event) |
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153 | { |
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154 | if (mouse_cursor_state<0) { |
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155 | restore_cursor(saved_x,saved_y); |
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156 | saved_x=event->x; |
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157 | saved_y=event->y; |
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158 | if (user_mouse_handler!=NULL) user_mouse_handler(event); |
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159 | show_cursor(saved_x,saved_y); |
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160 | } else |
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161 | if (user_mouse_handler!=NULL) user_mouse_handler(event); |
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162 | } |
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163 | |||
164 | /* -------------- |
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165 | * TXT management |
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166 | * -------------- |
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167 | */ |
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168 | |||
169 | /* text cursor shape */ |
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170 | #define DEFAULTTXTSHAPE 0x7700ffff |
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171 | static DWORD saved_txtshape=DEFAULTTXTSHAPE; |
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172 | static BYTE attr_andmask,attr_xormask; |
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173 | static BYTE c_andmask,c_xormask; |
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174 | /* saved values */ |
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175 | static BYTE saved_attr,saved_c; |
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176 | |||
177 | /* show txt cursor */ |
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178 | void show_txt_cursor(int x, int y) |
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179 | { |
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180 | int attr,c; |
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181 | getc_xy(x,y,&saved_attr,&saved_c); |
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182 | attr=(saved_attr&attr_andmask)^attr_xormask; |
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183 | c=(saved_c&c_andmask)^c_xormask; |
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184 | putc_xy(x,y,attr,c); |
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185 | } |
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186 | |||
187 | /* restore txt cursor */ |
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188 | static void restore_txt_cursor(int x, int y) |
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189 | { |
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190 | putc_xy(x,y,saved_attr,saved_c); |
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191 | } |
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192 | |||
193 | /* define text shape */ |
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194 | int mouse_txtshape(DWORD img) |
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195 | { |
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196 | int cond; |
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197 | if (img==DEFAULT) img=DEFAULTTXTSHAPE; |
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198 | |||
199 | cond=( |
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200 | (autocursormode&STATUSMASK)==ENABLE |
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201 | && |
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202 | (autocursormode&TXTCURSOR)==TXTCURSOR |
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203 | ); |
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204 | |||
205 | if (cond) |
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206 | restore_txt_cursor(saved_x,saved_y); |
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207 | |||
208 | saved_txtshape=img; |
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209 | c_andmask=img&0xff; |
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210 | attr_andmask=(img&0xff00)>>8; |
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211 | c_xormask=(img&0xff0000)>>16; |
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212 | attr_xormask=(img&0xff000000)>>24; |
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213 | |||
214 | if (cond) |
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215 | show_txt_cursor(saved_x,saved_y); |
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216 | |||
217 | return 0; |
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218 | } |
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219 | |||
220 | /* |
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221 | * User interface to autocursor functions |
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222 | */ |
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223 | |||
224 | |||
225 | /* display the cursor */ |
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226 | |||
227 | #define MOUSE_ON() { \ |
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228 | mouse_cursor_state--; \ |
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229 | if (mouse_cursor_state==-1) { \ |
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230 | saved_x=mouse_x; \ |
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231 | saved_y=mouse_y; \ |
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232 | show_cursor(saved_x,saved_y); \ |
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233 | } \ |
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234 | } |
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235 | |||
236 | static void mouse_on_sem(void) |
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237 | { |
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238 | sem_wait(&mutex); |
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239 | MOUSE_ON(); |
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240 | sem_post(&mutex); |
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241 | } |
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242 | |||
243 | static void mouse_on_nosem(void) |
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244 | { |
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245 | MOUSE_ON(); |
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246 | } |
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247 | |||
248 | void (*mouse_on)(void)=mouse_on_nosem; |
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249 | |||
250 | /* hide the cursor */ |
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251 | |||
252 | #define MOUSE_OFF() { \ |
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253 | mouse_cursor_state++; \ |
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254 | if (mouse_cursor_state==0) restore_cursor(saved_x,saved_y); \ |
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255 | } |
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256 | |||
257 | void mouse_off_sem(void) |
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258 | { |
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259 | sem_wait(&mutex); |
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260 | MOUSE_OFF(); |
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261 | sem_post(&mutex); |
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262 | } |
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263 | |||
264 | void mouse_off_nosem(void) |
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265 | { |
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266 | MOUSE_OFF(); |
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267 | } |
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268 | |||
269 | void (*mouse_off)(void)=mouse_off_nosem; |
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270 | |||
271 | static MOUSE_HANDLER wich_handler(int cmd) |
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272 | { |
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273 | if (((cmd&WITHOUTSEM)==WITHOUTSEM)&&((cmd&AUTOOFF)==AUTOOFF)) |
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274 | return autocursor_mouse_handler_4; |
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275 | else if ((cmd&WITHOUTSEM)==WITHOUTSEM) |
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276 | return autocursor_mouse_handler_2; |
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277 | else if ((cmd&AUTOOFF)==AUTOOFF) |
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278 | return autocursor_mouse_handler_3; |
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279 | return autocursor_mouse_handler_1; |
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280 | } |
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281 | |||
282 | int mouse_txtcursor(int cmd) |
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283 | { |
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284 | mouse_txtshape(saved_txtshape); |
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285 | return _mouse_cursor_init(cmd|TXTCURSOR,show_txt_cursor,restore_txt_cursor); |
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286 | } |
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287 | |||
288 | /**/ |
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289 | |||
290 | int _mouse_cursor_init(int cmd, |
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291 | void(*my_show_cursor)(int,int), |
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292 | void(*my_restore_cursor)(int,int) |
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293 | ) |
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294 | { |
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295 | if (mutex==-1) { |
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296 | if (sem_init(&mutex,0,1) == -1) |
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297 | return -1; |
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298 | } |
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299 | |||
300 | switch (cmd&STATUSMASK) { |
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301 | case DISABLE: |
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302 | mouse_handler=user_mouse_handler; |
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303 | restore_cursor(saved_x,saved_y); |
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304 | show_cursor=dummy; |
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305 | restore_cursor=dummy; |
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306 | break; |
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307 | case ENABLE: |
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308 | restore_cursor(saved_x,saved_y); |
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309 | restore_cursor=my_restore_cursor; |
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310 | show_cursor=my_show_cursor; |
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311 | if ((autocursormode&STATUSMASK)==DISABLE) { |
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312 | user_mouse_handler=mouse_handler; |
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313 | mouse_handler=wich_handler(cmd); |
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314 | } |
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315 | mouse_cursor_state=0; |
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316 | break; |
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317 | default: |
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318 | return -1; |
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319 | |||
320 | } |
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321 | autocursormode=cmd; |
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322 | |||
323 | if ((autocursormode&STATUSMASK)==ENABLE) { |
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324 | if ((cmd&WITHOUTSEM)==WITHOUTSEM) { |
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325 | mouse_on=mouse_on_nosem; |
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326 | mouse_off=mouse_off_nosem; |
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327 | } else { |
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328 | mouse_on=mouse_on_sem; |
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329 | mouse_off=mouse_off_sem; |
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330 | } |
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331 | } |
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332 | |||
333 | return 0; |
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334 | } |
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335 | |||
336 | void _mouse_getsavedposition(int *xptr, int *yptr) |
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337 | { |
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338 | *xptr=saved_x; |
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339 | *yptr=saved_y; |
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340 | } |