arch/sdl/mouse.c

   1 /* $Id: mouse.c,v 1.6 2003-11-25 04:13:04 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 #define MOUSE_MAX_BUTTONS       8
  23
  24 #define Z_SENSITIVITY 100
  25
  26 struct mousebutton {
  27         ubyte pressed;
  28         fix time_went_down;
  29         fix time_held_down;
  30         uint num_downs;
  31         uint num_ups;
  32 };
  33
  34 static struct mouseinfo {
  35         struct mousebutton buttons[MOUSE_MAX_BUTTONS];
  36         int delta_x, delta_y, delta_z;
  37         int x,y,z;
  38 } Mouse;
  39
  40 void d_mouse_init(void)
  41 {
  42         memset(&Mouse,0,sizeof(Mouse));
  43 }
  44
  45 void mouse_button_handler(SDL_MouseButtonEvent *mbe)
  46 {
  47         // to bad, SDL buttons use a different mapping as descent expects,
  48         // this is at least true and tested for the first three buttons
  49         int button_remap[11] = {
  50                 MB_LEFT,
  51                 MB_MIDDLE,
  52                 MB_RIGHT,
  53                 MB_Z_UP,
  54                 MB_Z_DOWN,
  55                 MB_PITCH_BACKWARD,
  56                 MB_PITCH_FORWARD,
  57                 MB_BANK_LEFT,
  58                 MB_BANK_RIGHT,
  59                 MB_HEAD_LEFT,
  60                 MB_HEAD_RIGHT
  61         };
  62
  63         int button = button_remap[mbe->button - 1]; // -1 since SDL seems to start counting at 1
  64
  65         if (mbe->state == SDL_PRESSED) {
  66                 Mouse.buttons[button].pressed = 1;
  67                 Mouse.buttons[button].time_went_down = timer_get_fixed_seconds();
  68                 Mouse.buttons[button].num_downs++;
  69
  70                 if (button == MB_Z_UP) {
  71                         Mouse.delta_z += Z_SENSITIVITY;
  72                         Mouse.z += Z_SENSITIVITY;
  73                 } else if (button == MB_Z_DOWN) {
  74                         Mouse.delta_z -= Z_SENSITIVITY;
  75                         Mouse.z -= Z_SENSITIVITY;
  76                 }
  77         } else {
  78                 Mouse.buttons[button].pressed = 0;
  79                 Mouse.buttons[button].time_held_down += timer_get_fixed_seconds() - Mouse.buttons[button].time_went_down;
  80                 Mouse.buttons[button].num_ups++;
  81         }
  82 }
  83
  84 void mouse_motion_handler(SDL_MouseMotionEvent *mme)
  85 {
  86         Mouse.delta_x += mme->xrel;
  87         Mouse.delta_y += mme->yrel;
  88         Mouse.x += mme->xrel;
  89         Mouse.y += mme->yrel;
  90 }
  91
  92 void mouse_flush()      // clears all mice events...
  93 {
  94         int i;
  95         fix current_time;
  96
  97         event_poll();
  98
  99         current_time = timer_get_fixed_seconds();
 100         for (i=0; i<MOUSE_MAX_BUTTONS; i++) {
 101                 Mouse.buttons[i].pressed=0;
 102                 Mouse.buttons[i].time_went_down=current_time;
 103                 Mouse.buttons[i].time_held_down=0;
 104                 Mouse.buttons[i].num_ups=0;
 105                 Mouse.buttons[i].num_downs=0;
 106         }
 107         Mouse.delta_x = 0;
 108         Mouse.delta_y = 0;
 109         Mouse.delta_z = 0;
 110         Mouse.x = 0;
 111         Mouse.y = 0;
 112         Mouse.z = 0;
 113         SDL_GetMouseState(&Mouse.x, &Mouse.y); // necessary because polling only gives us the delta.
 114 }
 115
 116 //========================================================================
 117 void mouse_get_pos( int *x, int *y )
 118 {
 119         event_poll();
 120         *x=Mouse.x;
 121         *y=Mouse.y;
 122 }
 123
 124 void mouse_get_delta( int *dx, int *dy )
 125 {
 126         event_poll();
 127         *dx = Mouse.delta_x;
 128         *dy = Mouse.delta_y;
 129         Mouse.delta_x = 0;
 130         Mouse.delta_y = 0;
 131 }
 132
 133 void mouse_get_pos_z( int *x, int *y, int *z )
 134 {
 135         event_poll();
 136         *x=Mouse.x;
 137         *y=Mouse.y;
 138         *z=Mouse.z;
 139 }
 140
 141 void mouse_get_delta_z( int *dx, int *dy, int *dz )
 142 {
 143         event_poll();
 144         *dx = Mouse.delta_x;
 145         *dy = Mouse.delta_y;
 146         *dz = Mouse.delta_z;
 147         Mouse.delta_x = 0;
 148         Mouse.delta_y = 0;
 149         Mouse.delta_z = 0;
 150 }
 151
 152 int mouse_get_btns()
 153 {
 154         int i;
 155         uint flag=1;
 156         int status = 0;
 157
 158         event_poll();
 159
 160         for (i=0; i<MOUSE_MAX_BUTTONS; i++ ) {
 161                 if (Mouse.buttons[i].pressed)
 162                         status |= flag;
 163                 flag <<= 1;
 164         }
 165
 166         return status;
 167 }
 168
 169 void mouse_get_cyberman_pos( int *x, int *y )
 170 {
 171 }
 172
 173 // Returns how long this button has been down since last call.
 174 fix mouse_button_down_time(int button)
 175 {
 176         fix time_down, time;
 177
 178         event_poll();
 179
 180         if (!Mouse.buttons[button].pressed) {
 181                 time_down = Mouse.buttons[button].time_held_down;
 182                 Mouse.buttons[button].time_held_down = 0;
 183         } else {
 184                 time = timer_get_fixed_seconds();
 185                 time_down = time - Mouse.buttons[button].time_held_down;
 186                 Mouse.buttons[button].time_held_down = time;
 187         }
 188         return time_down;
 189 }
 190
 191 // Returns how many times this button has went down since last call
 192 int mouse_button_down_count(int button)
 193 {
 194         int count;
 195
 196         event_poll();
 197
 198         count = Mouse.buttons[button].num_downs;
 199         Mouse.buttons[button].num_downs = 0;
 200
 201         return count;
 202 }
 203
 204 // Returns 1 if this button is currently down
 205 int mouse_button_state(int button)
 206 {
 207         event_poll();
 208         return Mouse.buttons[button].pressed;
 209 }