Kaleidoscope Style Guide conformance

Signed-off-by: Gergely Nagy <algernon@madhouse-project.org>

README.md

@@ -9,38 +9,62 @@
  [st:broken]: https://img.shields.io/badge/broken-X-black.svg?style=flat&colorA=e05d44&colorB=494e52
  [st:experimental]: https://img.shields.io/badge/experimental----black.svg?style=flat&colorA=dfb317&colorB=494e52
 
-TODO
+The `FingerPainter` plugin provides an elaborate `LED` mode, in which one's able
+to paint with their fingers: when edit mode is toggled on, keys will - instead
+of performing their normal function - cycle through the global palette - as
+provided by the [LED-Palette-Theme][plugin:l-p-t] plugin -, one by one for each tap.
+
+This allows us to edit the theme with the keyboard only, without any special
+software (except to toggle edit mode on and off).
 
 ## Using the plugin
 
-TODO
+To use the plugin, just include the header, add it to the list of used plugins,
+and register the `Focus` hooks:
 
 ```c++
 #include <Kaleidoscope.h>
 #include <Kaleidoscope-EEPROM-Settings.h>
 #include <Kaleidoscope-FingerPainter.h>
+#include <Kaleidoscope-Focus.h>
+
+void setup() {
+  USE_PLUGINS(&EEPROMSettings, &FingerPainter, &Focus);
 
-void setup () {
-  Kaleidoscope.setup ();
+  Kaleidoscope.setup();
 
-  USE_PLUGINS (&EEPROMSettings, &FingerPainter);
+  EEPROMSettings.seal();
   
-  // TODO
+  Focus.addHook(FOCUS_HOOK_FINGERPAINTER);
 }
 ```
 
 ## Plugin methods
 
-The plugin provides the `FingerPainter` object, which has the following methods:
+The plugin provides the `FingerPainter` object, which provides no public methods.
+
+## Focus commands
+
+The plugin provides a single `Focus` hook: `FOCUS_HOOK_FINGERPAINTER`, which
+in turn provides the following commands:
 
-**TODO**
+### `fingerpainter.clear`
+
+> Clears the canvas, so that one can start a new painting.
+
+### `fingerpainter.toggle`
+
+> Toggles the painting mode on and off.
 
 ## Dependencies
 
 * [Kaleidoscope-EEPROM-Settings](https://github.com/keyboardio/Kaleidoscope-EEPROM-Settings)
-* [Kaleidoscope-LED-Palette-Theme](https://github.com/keyboardio/Kaleidoscope-LED-Palette-Theme)
+* [Kaleidoscope-Focus](https://github.com/keyboardio/Kaleidoscope-Focus)
+* [Kaleidoscope-LED-Palette-Theme][plugin:l-p-t]
 * [Kaleidoscope-LEDControl](https://github.com/keyboardio/Kaleidoscope-LEDControl)
 
+  [plugin:l-p-t]: https://github.com/keyboardio/Kaleidoscope-LED-Palette-Theme
+
 ## Further reading
 
 Starting from the [example][plugin:example] is the recommended way of getting

examples/FingerPainter/FingerPainter.ino

@@ -20,14 +20,13 @@
 #include <Kaleidoscope-LEDControl.h>
 #include <Kaleidoscope-EEPROM-Settings.h>
 #include <Kaleidoscope-FingerPainter.h>
-#include <Kaleidoscope-Macros.h>
+#include <Kaleidoscope-Focus.h>
 
 #include "LED-Off.h"
 
 const Key keymaps[][ROWS][COLS] PROGMEM = {
   [0] = KEYMAP_STACKED
-  (
-    M(0),              Key_1, Key_2, Key_3, Key_4, Key_5, Key_LEDEffectNext,
+  (Key_NoKey,         Key_1, Key_2, Key_3, Key_4, Key_5, Key_LEDEffectNext,
    Key_Backtick,      Key_Q, Key_W, Key_E, Key_R, Key_T, Key_Tab,
    Key_PageUp,        Key_A, Key_S, Key_D, Key_F, Key_G,
    Key_PageDown,      Key_Z, Key_X, Key_C, Key_V, Key_B, Key_Escape,
@@ -41,27 +40,17 @@ const Key keymaps[][ROWS][COLS] PROGMEM = {
    Key_skip,  Key_N, Key_M, Key_Comma, Key_Period, Key_Slash,     Key_Minus,
 
    Key_RightShift, Key_RightAlt, Key_Spacebar, Key_RightControl,
-    Key_skip
-  ),
+   Key_skip),
 };
 
-const macro_t *macroAction(uint8_t macroIndex, uint8_t keyState) {
-  if (macroIndex == 0 && key_toggled_off(keyState)) {
-    FingerPainter.toggleEdit();
-  }
-
-  return MACRO_NONE;
-}
-
 void setup() {
-  Serial.begin(9600);
+  USE_PLUGINS(&LEDOff, &EEPROMSettings, &FingerPainter, &Focus);
 
   Kaleidoscope.setup();
 
-  USE_PLUGINS(&LEDOff, &EEPROMSettings, &FingerPainter, &Macros);
-
   EEPROMSettings.seal();
 
+  Focus.addHook(FOCUS_HOOK_FINGERPAINTER);
   FingerPainter.activate();
 }
 

src/Kaleidoscope/FingerPainter.cpp

@@ -23,96 +23,92 @@
 #include <Kaleidoscope-LEDControl.h>
 #include <Kaleidoscope-LED-Palette-Theme.h>
 
-namespace KaleidoscopePlugins {
+namespace kaleidoscope {
 
-uint16_t FingerPainter::colorBase;
-bool FingerPainter::editMode;
+uint16_t FingerPainter::color_base_;
+bool FingerPainter::edit_mode_;
 
 FingerPainter::FingerPainter(void) {
 }
 
-void
-FingerPainter::begin(void) {
+void FingerPainter::begin(void) {
   USE_PLUGINS(&::LEDPaletteTheme);
 
   LEDMode::begin();
   event_handler_hook_use(eventHandlerHook);
 
-  colorBase = ::LEDPaletteTheme.reserveThemes(1);
+  color_base_ = ::LEDPaletteTheme.reserveThemes(1);
 }
 
-void
-FingerPainter::update(void) {
-  ::LEDPaletteTheme.update(colorBase, 0);
+void FingerPainter::update(void) {
+  ::LEDPaletteTheme.update(color_base_, 0);
 }
 
-void
-FingerPainter::toggleEdit(void) {
-  editMode = !editMode;
+void FingerPainter::toggle(void) {
+  edit_mode_ = !edit_mode_;
 }
 
-Key
-FingerPainter::eventHandlerHook(Key mappedKey, byte row, byte col, uint8_t keyState) {
-  if (!editMode)
-    return mappedKey;
+Key FingerPainter::eventHandlerHook(Key mapped_key, byte row, byte col, uint8_t key_state) {
+  if (!edit_mode_)
+    return mapped_key;
 
-  if (!key_toggled_on(keyState))
+  if (!key_toggled_on(key_state))
     return Key_NoKey;
 
   if (row >= ROWS || col >= COLS)
     return Key_NoKey;
 
-  uint8_t colorIndex = ::LEDPaletteTheme.lookupColorIndex(colorBase, KeyboardHardware.get_led_index(row, col));
+  uint8_t color_index = ::LEDPaletteTheme.lookupColorIndex(color_base_, KeyboardHardware.get_led_index(row, col));
 
   // Find the next color in the palette that is different.
   // But do not loop forever!
-  bool turnAround = false;
-  cRGB oldColor = ::LEDPaletteTheme.lookupColor(colorIndex), newColor = oldColor;
-  while (memcmp(&oldColor, &newColor, sizeof(cRGB)) == 0) {
-    colorIndex++;
-    if (colorIndex > 15) {
-      colorIndex = 0;
-      if (turnAround)
+  bool turn_around = false;
+  cRGB old_color = ::LEDPaletteTheme.lookupColor(color_index), new_color = old_color;
+  while (memcmp(&old_color, &new_color, sizeof(cRGB)) == 0) {
+    color_index++;
+    if (color_index > 15) {
+      color_index = 0;
+      if (turn_around)
         break;
-      turnAround = true;
+      turn_around = true;
     }
-    newColor = ::LEDPaletteTheme.lookupColor(colorIndex);
+    new_color = ::LEDPaletteTheme.lookupColor(color_index);
   }
 
-  ::LEDPaletteTheme.updateColor(colorBase, KeyboardHardware.get_led_index(row, col), colorIndex);
+  ::LEDPaletteTheme.updateColor(color_base_, KeyboardHardware.get_led_index(row, col), color_index);
 
   return Key_NoKey;
 }
 
-bool
-FingerPainter::focusHook(const char *command) {
+bool FingerPainter::focusHook(const char *command) {
   enum {
     TOGGLE,
     CLEAR,
-  } subCommand;
+  } sub_command;
 
   if (strncmp_P(command, PSTR("fingerpainter."), 14) != 0)
     return false;
 
   if (strcmp_P(command + 14, PSTR("toggle")) == 0)
-    subCommand = TOGGLE;
+    sub_command = TOGGLE;
   else if (strcmp_P(command + 14, PSTR("clear")) == 0)
-    subCommand = CLEAR;
+    sub_command = CLEAR;
   else
     return false;
 
-  if (subCommand == CLEAR) {
+  if (sub_command == CLEAR) {
     for (uint16_t i = 0; i < ROWS * COLS / 2; i++) {
-      EEPROM.update(colorBase + i, 0);
+      EEPROM.update(color_base_ + i, 0);
     }
     return true;
   }
 
   ::FingerPainter.activate();
-  toggleEdit();
+  toggle();
 
   return true;
 }
-};
 
-KaleidoscopePlugins::FingerPainter FingerPainter;
+}
+
+kaleidoscope::FingerPainter FingerPainter;

src/Kaleidoscope/FingerPainter.h

@@ -20,26 +20,26 @@
 
 #include <Kaleidoscope-LEDControl.h>
 
-namespace KaleidoscopePlugins {
+namespace kaleidoscope {
 class FingerPainter : public LEDMode {
  public:
   FingerPainter(void);
 
   void begin(void) final;
-  virtual void update(void) final;
+  void update(void) final;
 
-  static void toggleEdit(void);
+  static void toggle(void);
   static bool focusHook(const char *command);
 
  private:
-  static uint16_t colorBase;
-  static bool editMode;
+  static uint16_t color_base_;
+  static bool edit_mode_;
 
-  static Key eventHandlerHook(Key mappedKey, byte row, byte col, uint8_t keyState);
+  static Key eventHandlerHook(Key mapped_key, byte row, byte col, uint8_t key_state);
 };
 };
 
-extern KaleidoscopePlugins::FingerPainter FingerPainter;
+extern kaleidoscope::FingerPainter FingerPainter;
 
 #define FOCUS_HOOK_FINGERPAINTER FOCUS_HOOK(FingerPainter.focusHook,  \
                                             "fingerpainter.toggle\n"  \