From 2ed76ac55615a720dbcbf2ac828ad3060a252273 Mon Sep 17 00:00:00 2001
From: JF <jf@codingfield.com>
Date: Sun, 15 Mar 2020 18:03:11 +0100
Subject: Encapsulate brightness controll into the class BrightnessController.
 Add a new app to configure the brightness.

---
 src/DisplayApp/Screens/Brightness.cpp | 72 +++++++++++++++++++++++++++++++++++
 1 file changed, 72 insertions(+)
 create mode 100644 src/DisplayApp/Screens/Brightness.cpp

(limited to 'src/DisplayApp/Screens/Brightness.cpp')

diff --git a/src/DisplayApp/Screens/Brightness.cpp b/src/DisplayApp/Screens/Brightness.cpp
new file mode 100644
index 00000000..a87a62a8
--- /dev/null
+++ b/src/DisplayApp/Screens/Brightness.cpp
@@ -0,0 +1,72 @@
+#include <libs/lvgl/lvgl.h>
+#include "Brightness.h"
+
+using namespace Pinetime::Applications::Screens;
+
+void slider_event_cb(lv_obj_t * slider, lv_event_t event) {
+  if(event == LV_EVENT_VALUE_CHANGED) {
+    auto* brightnessSlider = static_cast<Brightness*>(slider->user_data);
+    brightnessSlider->OnValueChanged();
+  }
+}
+
+Brightness::Brightness(Pinetime::Applications::DisplayApp *app, Controllers::BrightnessController& brightness) : Screen(app), brightness{brightness} {
+  slider = lv_slider_create(lv_scr_act(), NULL);
+  lv_obj_set_user_data(slider, this);
+  lv_obj_set_width(slider, LV_DPI * 2);
+  lv_obj_align(slider, NULL, LV_ALIGN_CENTER, 0, 0);
+  lv_obj_set_event_cb(slider, slider_event_cb);
+  lv_slider_set_range(slider, 0, 2);
+  lv_slider_set_value(slider, LevelToInt(brightness.Level()), LV_ANIM_OFF);
+
+  slider_label = lv_label_create(lv_scr_act(), NULL);
+  lv_label_set_text(slider_label, LevelToString(brightness.Level()));
+  lv_obj_set_auto_realign(slider_label, true);
+  lv_obj_align(slider_label, slider, LV_ALIGN_OUT_BOTTOM_MID, 0, 10);
+}
+
+Brightness::~Brightness() {
+  lv_obj_clean(lv_scr_act());
+}
+
+bool Brightness::Refresh() {
+  return running;
+}
+
+bool Brightness::OnButtonPushed() {
+  running = false;
+  return true;
+}
+
+const char *Brightness::LevelToString(Pinetime::Controllers::BrightnessController::Levels level) {
+  switch(level) {
+    case Pinetime::Controllers::BrightnessController::Levels::Off: return "Off";
+    case Pinetime::Controllers::BrightnessController::Levels::Low: return "Low";
+    case Pinetime::Controllers::BrightnessController::Levels::Medium: return "Medium";
+    case Pinetime::Controllers::BrightnessController::Levels::High: return "High";
+    default : return "???";
+  }
+}
+
+void Brightness::OnValueChanged() {
+  SetValue(lv_slider_get_value(slider));
+}
+
+void Brightness::SetValue(uint8_t value) {
+  switch(value) {
+    case 0: brightness.Set(Controllers::BrightnessController::Levels::Low); break;
+    case 1: brightness.Set(Controllers::BrightnessController::Levels::Medium); break;
+    case 2: brightness.Set(Controllers::BrightnessController::Levels::High); break;
+  }
+  lv_label_set_text(slider_label, LevelToString(brightness.Level()));
+}
+
+uint8_t Brightness::LevelToInt(Pinetime::Controllers::BrightnessController::Levels level) {
+  switch(level) {
+    case Pinetime::Controllers::BrightnessController::Levels::Off: return 0;
+    case Pinetime::Controllers::BrightnessController::Levels::Low: return 0;
+    case Pinetime::Controllers::BrightnessController::Levels::Medium: return 1;
+    case Pinetime::Controllers::BrightnessController::Levels::High: return 2;
+    default : return 0;
+  }
+}
-- 
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