arch/sdl/mouse.c

   1 /* $Id: mouse.c,v 1.8 2003-11-27 09:24:43 btb Exp $ */
   2 /*
   3  *
   4  * SDL mouse driver.
   5  *
   6  *
   7  */
   8
   9 #ifdef HAVE_CONFIG_H
  10 #include <conf.h>
  11 #endif
  12
  13 #include <string.h>
  14
  15 #include <SDL.h>
  16
  17 #include "fix.h"
  18 #include "timer.h"
  19 #include "event.h"
  20 #include "mouse.h"
  21
  22 #ifdef _WIN32_WCE
  23 # define LANDSCAPE
  24 #endif
  25
  26 #define MOUSE_MAX_BUTTONS       8
  27
  28 #define Z_SENSITIVITY 100
  29
  30 struct mousebutton {
  31         ubyte pressed;
  32         fix time_went_down;
  33         fix time_held_down;
  34         uint num_downs;
  35         uint num_ups;
  36 };
  37
  38 static struct mouseinfo {
  39         struct mousebutton buttons[MOUSE_MAX_BUTTONS];
  40         int delta_x, delta_y, delta_z;
  41         int x,y,z;
  42 } Mouse;
  43
  44 void d_mouse_init(void)
  45 {
  46         memset(&Mouse,0,sizeof(Mouse));
  47 }
  48
  49 void mouse_button_handler(SDL_MouseButtonEvent *mbe)
  50 {
  51         // to bad, SDL buttons use a different mapping as descent expects,
  52         // this is at least true and tested for the first three buttons
  53         int button_remap[11] = {
  54                 MB_LEFT,
  55                 MB_MIDDLE,
  56                 MB_RIGHT,
  57                 MB_Z_UP,
  58                 MB_Z_DOWN,
  59                 MB_PITCH_BACKWARD,
  60                 MB_PITCH_FORWARD,
  61                 MB_BANK_LEFT,
  62                 MB_BANK_RIGHT,
  63                 MB_HEAD_LEFT,
  64                 MB_HEAD_RIGHT
  65         };
  66
  67         int button = button_remap[mbe->button - 1]; // -1 since SDL seems to start counting at 1
  68
  69         if (mbe->state == SDL_PRESSED) {
  70                 Mouse.buttons[button].pressed = 1;
  71                 Mouse.buttons[button].time_went_down = timer_get_fixed_seconds();
  72                 Mouse.buttons[button].num_downs++;
  73
  74                 if (button == MB_Z_UP) {
  75                         Mouse.delta_z += Z_SENSITIVITY;
  76                         Mouse.z += Z_SENSITIVITY;
  77                 } else if (button == MB_Z_DOWN) {
  78                         Mouse.delta_z -= Z_SENSITIVITY;
  79                         Mouse.z -= Z_SENSITIVITY;
  80                 }
  81         } else {
  82                 Mouse.buttons[button].pressed = 0;
  83                 Mouse.buttons[button].time_held_down += timer_get_fixed_seconds() - Mouse.buttons[button].time_went_down;
  84                 Mouse.buttons[button].num_ups++;
  85         }
  86 }
  87
  88 void mouse_motion_handler(SDL_MouseMotionEvent *mme)
  89 {
  90 #ifdef LANDSCAPE
  91         Mouse.delta_y += mme->xrel;
  92         Mouse.delta_x += mme->yrel;
  93         Mouse.y += mme->xrel;
  94         Mouse.x += mme->yrel;
  95 #else
  96         Mouse.delta_x += mme->xrel;
  97         Mouse.delta_y += mme->yrel;
  98         Mouse.x += mme->xrel;
  99         Mouse.y += mme->yrel;
 100 #endif
 101 }
 102
 103 void mouse_flush()      // clears all mice events...
 104 {
 105         int i;
 106         fix current_time;
 107
 108         event_poll();
 109
 110         current_time = timer_get_fixed_seconds();
 111         for (i=0; i<MOUSE_MAX_BUTTONS; i++) {
 112                 Mouse.buttons[i].pressed=0;
 113                 Mouse.buttons[i].time_went_down=current_time;
 114                 Mouse.buttons[i].time_held_down=0;
 115                 Mouse.buttons[i].num_ups=0;
 116                 Mouse.buttons[i].num_downs=0;
 117         }
 118         Mouse.delta_x = 0;
 119         Mouse.delta_y = 0;
 120         Mouse.delta_z = 0;
 121         Mouse.x = 0;
 122         Mouse.y = 0;
 123         Mouse.z = 0;
 124         SDL_GetMouseState(&Mouse.x, &Mouse.y); // necessary because polling only gives us the delta.
 125 }
 126
 127 //========================================================================
 128 void mouse_get_pos( int *x, int *y )
 129 {
 130         event_poll();
 131 #ifdef _WIN32_WCE // needed here only for touchpens?
 132 # ifdef LANDSCAPE
 133         SDL_GetMouseState(&Mouse.y, &Mouse.x);
 134 # else
 135         SDL_GetMouseState(&Mouse.x, &Mouse.y);
 136 # endif
 137 #endif
 138         *x=Mouse.x;
 139         *y=Mouse.y;
 140 }
 141
 142 void mouse_get_delta( int *dx, int *dy )
 143 {
 144         event_poll();
 145         *dx = Mouse.delta_x;
 146         *dy = Mouse.delta_y;
 147         Mouse.delta_x = 0;
 148         Mouse.delta_y = 0;
 149 }
 150
 151 void mouse_get_pos_z( int *x, int *y, int *z )
 152 {
 153         event_poll();
 154         *x=Mouse.x;
 155         *y=Mouse.y;
 156         *z=Mouse.z;
 157 }
 158
 159 void mouse_get_delta_z( int *dx, int *dy, int *dz )
 160 {
 161         event_poll();
 162         *dx = Mouse.delta_x;
 163         *dy = Mouse.delta_y;
 164         *dz = Mouse.delta_z;
 165         Mouse.delta_x = 0;
 166         Mouse.delta_y = 0;
 167         Mouse.delta_z = 0;
 168 }
 169
 170 int mouse_get_btns()
 171 {
 172         int i;
 173         uint flag=1;
 174         int status = 0;
 175
 176         event_poll();
 177
 178         for (i=0; i<MOUSE_MAX_BUTTONS; i++ ) {
 179                 if (Mouse.buttons[i].pressed)
 180                         status |= flag;
 181                 flag <<= 1;
 182         }
 183
 184         return status;
 185 }
 186
 187 void mouse_get_cyberman_pos( int *x, int *y )
 188 {
 189 }
 190
 191 // Returns how long this button has been down since last call.
 192 fix mouse_button_down_time(int button)
 193 {
 194         fix time_down, time;
 195
 196         event_poll();
 197
 198         if (!Mouse.buttons[button].pressed) {
 199                 time_down = Mouse.buttons[button].time_held_down;
 200                 Mouse.buttons[button].time_held_down = 0;
 201         } else {
 202                 time = timer_get_fixed_seconds();
 203                 time_down = time - Mouse.buttons[button].time_held_down;
 204                 Mouse.buttons[button].time_held_down = time;
 205         }
 206         return time_down;
 207 }
 208
 209 // Returns how many times this button has went down since last call
 210 int mouse_button_down_count(int button)
 211 {
 212         int count;
 213
 214         event_poll();
 215
 216         count = Mouse.buttons[button].num_downs;
 217         Mouse.buttons[button].num_downs = 0;
 218
 219         return count;
 220 }
 221
 222 // Returns 1 if this button is currently down
 223 int mouse_button_state(int button)
 224 {
 225         event_poll();
 226         return Mouse.buttons[button].pressed;
 227 }