common/layer_switch.c

   1 #include <stdint.h>
   2 #include "keyboard.h"
   3 #include "action.h"
   4 #include "debug.h"
   5 #include "util.h"
   6 #include "layer_switch.h"
   7
   8
   9 uint8_t default_layer = 0;
  10
  11 uint16_t layer_switch_stat = 0;
  12
  13
  14 uint16_t layer_switch_get_stat(void)
  15 {
  16     return layer_switch_stat;
  17 }
  18
  19 /* return highest layer whose state is on */
  20 uint8_t layer_switch_get_layer(void)
  21 {
  22     return biton16(layer_switch_stat);
  23 }
  24
  25 static inline void stat_set(uint16_t stat)
  26 {
  27     debug("layer_switch: ");
  28     layer_switch_debug(); debug(" to ");
  29
  30     layer_switch_stat = stat;
  31
  32     layer_switch_debug(); debug("\n");
  33
  34     clear_keyboard_but_mods(); // To avoid stuck keys
  35 }
  36
  37 void layer_switch_clear(void)
  38 {
  39     stat_set(0);
  40 }
  41
  42
  43 void layer_switch_set(uint16_t stat)
  44 {
  45     stat_set(stat);
  46 }
  47
  48 void layer_switch_move(uint8_t layer)
  49 {
  50     if (layer)
  51         stat_set(1<<layer);
  52     else
  53         stat_set(0);    // fall back to default layer
  54 }
  55
  56 void layer_switch_on(uint8_t layer)
  57 {
  58     stat_set(layer_switch_stat | (1<<layer));
  59 }
  60
  61 void layer_switch_off(uint8_t layer)
  62 {
  63     stat_set(layer_switch_stat & ~(1<<layer));
  64 }
  65
  66 void layer_switch_invert(uint8_t layer)
  67 {
  68     stat_set(layer_switch_stat ^ (1<<layer));
  69 }
  70
  71 void layer_switch_or(uint16_t stat)
  72 {
  73     stat_set(layer_switch_stat | stat);
  74 }
  75 void layer_switch_and(uint16_t stat)
  76 {
  77     stat_set(layer_switch_stat & stat);
  78 }
  79 void layer_switch_xor(uint16_t stat)
  80 {
  81     stat_set(layer_switch_stat ^ stat);
  82 }
  83
  84 void layer_switch_debug(void)
  85 {
  86     debug_hex16(layer_switch_stat); debug("("); debug_dec(layer_switch_get_layer()); debug(")");
  87 }
  88
  89 action_t layer_switch_get_action(key_t key)
  90 {
  91     action_t action;
  92     action.code = ACTION_TRANSPARENT;
  93
  94     /* higher layer first */
  95     for (int8_t i = 15; i >= 0; i--) {
  96         if (layer_switch_stat & (1<<i)) {
  97             action = action_for_key(i, key);
  98             if (action.code != ACTION_TRANSPARENT) {
  99                 return action;
 100             }
 101         }
 102     }
 103     return action;
 104 }