1 files changed, 94 insertions, 0 deletions
diff --git a/tmk_core/common/action_layer.h b/tmk_core/common/action_layer.h
new file mode 100644
index 0000000000..d89ed6e5ce
--- /dev/null
+++ b/tmk_core/common/action_layer.h
@@ -0,0 +1,94 @@
+/*
+Copyright 2013 Jun Wako <wakojun@gmail.com>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+#ifndef ACTION_LAYER_H
+#define ACTION_LAYER_H
+
+#include <stdint.h>
+#include "keyboard.h"
+#include "action.h"
+
+
+/*
+ * Default Layer
+ */
+extern uint32_t default_layer_state;
+void default_layer_debug(void);
+void default_layer_set(uint32_t state);
+
+__attribute__((weak))
+uint32_t default_layer_state_set_kb(uint32_t state);
+
+#ifndef NO_ACTION_LAYER
+/* bitwise operation */
+void default_layer_or(uint32_t state);
+void default_layer_and(uint32_t state);
+void default_layer_xor(uint32_t state);
+#else
+#define default_layer_or(state)
+#define default_layer_and(state)
+#define default_layer_xor(state)
+#endif
+
+
+/*
+ * Keymap Layer
+ */
+#ifndef NO_ACTION_LAYER
+extern uint32_t layer_state;
+void layer_debug(void);
+void layer_clear(void);
+void layer_move(uint8_t layer);
+void layer_on(uint8_t layer);
+void layer_off(uint8_t layer);
+void layer_invert(uint8_t layer);
+/* bitwise operation */
+void layer_or(uint32_t state);
+void layer_and(uint32_t state);
+void layer_xor(uint32_t state);
+#else
+#define layer_state             0
+#define layer_clear()
+#define layer_move(layer)
+#define layer_on(layer)
+#define layer_off(layer)
+#define layer_invert(layer)
+
+#define layer_or(state)
+#define layer_and(state)
+#define layer_xor(state)
+#define layer_debug()
+
+__attribute__((weak))
+uint32_t layer_state_set_kb(uint32_t state);
+#endif
+
+/* pressed actions cache */
+#if !defined(NO_ACTION_LAYER) && defined(PREVENT_STUCK_MODIFIERS)
+/* The number of bits needed to represent the layer number: log2(32). */
+#define MAX_LAYER_BITS 5
+void update_source_layers_cache(keypos_t key, uint8_t layer);
+uint8_t read_source_layers_cache(keypos_t key);
+#endif
+action_t store_or_get_action(bool pressed, keypos_t key);
+
+/* return the topmost non-transparent layer currently associated with key */
+int8_t layer_switch_get_layer(keypos_t key);
+
+/* return action depending on current layer status */
+action_t layer_switch_get_action(keypos_t key);
+
+#endif