tmk
12 years ago
parent
c74ad260fb
commit
768ea72f10
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#include <stdint.h>
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#include "keyboard.h"
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#include "layer_stack.h"
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#include "debug.h"
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static uint8_t top_layer = 0;
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/* [0] always works as sentinel and not used for store.*/
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static layer_item_t layer_stack[LAYER_STACK_SIZE] = {};
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bool layer_stack_push(uint8_t layer)
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{
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for (uint8_t i = 1; i < LAYER_STACK_SIZE; i++) {
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if (!layer_stack[i].used) {
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layer_stack[i] = (layer_item_t){ .layer = layer,
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.next = top_layer,
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.used = true };
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top_layer = i;
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return true;
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}
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}
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return false;
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}
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bool layer_stack_pop(void)
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{
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if (layer_stack[top_layer].used) {
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uint8_t popped = top_layer;
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top_layer = layer_stack[popped].next;
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layer_stack[popped] = (layer_item_t){};
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return true;
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}
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return false;
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}
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bool layer_stack_remove(uint8_t layer)
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{
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if (layer_stack[top_layer].used && layer_stack[top_layer].layer == layer) {
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layer_stack_pop();
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debug("layer_stack_remove: top_layer\n");
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return true;
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}
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for (uint8_t i = top_layer; layer_stack[i].used; i = layer_stack[i].next) {
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debug("layer_stack_remove: ["); debug_dec(i); debug("]");
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debug_dec(layer_stack[i].layer); debug("\n");
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uint8_t removed = layer_stack[i].next;
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if (layer_stack[removed].used && layer_stack[removed].layer == layer) {
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layer_stack[i].next = layer_stack[removed].next;
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layer_stack[removed] = (layer_item_t){};
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debug("layer_stack_remove: removed.\n");
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return true;
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}
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}
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return false;
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}
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bool layer_stack_remove_then_push(uint8_t layer)
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{
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layer_stack_remove(layer);
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return layer_stack_push(layer);
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}
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bool layer_stack_remove_or_push(uint8_t layer)
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{
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return (layer_stack_remove(layer)) || layer_stack_push(layer);
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}
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void layer_stack_debug(void)
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{
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debug("layer_stack: ");
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layer_item_t item = layer_stack[top_layer];
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while (item.used) {
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debug_dec(item.layer);
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debug("["); debug_dec(item.next); debug("]");
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item = layer_stack[item.next];
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}
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debug("\n");
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}
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action_t layer_stack_get_action(key_t key)
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{
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action_t action;
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action.code = ACTION_TRANSPARENT;
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/* layer stack */
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for (layer_item_t i = layer_stack[top_layer]; i.used; i = layer_stack[i.next]) {
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action = action_for_key(i.layer, key);
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if (action.code != ACTION_TRANSPARENT) {
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layer_stack_debug();
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debug("layer_stack: used. "); debug_dec(i.layer); debug("\n");
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return action;
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}
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debug("layer_stack: through. "); debug_dec(i.layer); debug("\n");
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}
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return action;
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}
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@ -0,0 +1,44 @@
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/*
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Copyright 2013 Jun Wako <wakojun@gmail.com>
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef LAYER_STACK_H
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#define LAYER_STACK_H
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#include <stdint.h>
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#include "action.h"
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/*
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* Layer stack
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*/
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#define LAYER_STACK_SIZE 8
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typedef struct {
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uint8_t layer:4;
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uint8_t next:3;
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bool used;
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} layer_item_t;
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bool layer_stack_push(uint8_t layer);
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bool layer_stack_pop(void);
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bool layer_stack_remove(uint8_t layer);
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bool layer_stack_remove_then_push(uint8_t layer);
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bool layer_stack_remove_or_push(uint8_t layer);
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void layer_stack_debug(void);
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action_t layer_stack_get_action(key_t key);
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#endif
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