Creates a layouts/ folder for keymaps shared between keyboards (#1609)

* include variables and .h files as pp directives

* start layout compilation

* split ergodoxes up

* don't compile all layouts for everything

* might seg fault

* reset layouts variable

* actually reset layouts

* include rules.mk instead

* remove includes from rules.mk

* update variable setting

* load visualizer from path

* adds some more examples

* adds more layouts

* more boards added

* more boards added

* adds documentation for layouts

* use lowercase names for LAYOUT_

* add layout.json files for each layout

* add community folder, default keymaps for layouts

* touch-up default layouts

* touch-up layouts, some keyboard rules.mk

* update documentation for layouts

* fix up serial/i2c switches

1 files changed, 49 insertions, 0 deletions

diff --git a/layouts/community/ergodox/belak/visualizer.c b/layouts/community/ergodox/belak/visualizer.c
new file mode 100644
index 000000000..b92890a66
--- /dev/null
+++ b/layouts/community/ergodox/belak/visualizer.c
@@ -0,0 +1,49 @@
+/*
+Copyright 2017 Fred Sundvik
+
+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/>.
+*/
+
+// Currently we are assuming that both the backlight and LCD are enabled
+// But it's entirely possible to write a custom visualizer that use only
+// one of them
+#ifndef LCD_BACKLIGHT_ENABLE
+#error This visualizer needs that LCD backlight is enabled
+#endif
+
+#ifndef LCD_ENABLE
+#error This visualizer needs that LCD is enabled
+#endif
+
+#include "simple_visualizer.h"
+
+static void get_visualizer_layer_and_color(visualizer_state_t* state) {
+    uint8_t saturation = 60;
+    if (state->status.leds & (1u << USB_LED_CAPS_LOCK)) {
+        saturation = 255;
+    }
+
+    if (state->status.layer & 0x4) {
+        state->target_lcd_color = LCD_COLOR(0, saturation, 0xFF);
+        state->layer_text = "Media";
+    }
+    else if (state->status.layer & 0x2) {
+        state->target_lcd_color = LCD_COLOR(168, saturation, 0xFF);
+        state->layer_text = "Symbols";
+    }
+    else {
+        state->target_lcd_color = LCD_COLOR(84, saturation, 0xFF);
+        state->layer_text = "Base";
+    }
+}