InfiniTime/src/displayapp/widgets/Counter.cpp

#include "displayapp/widgets/Counter.h"

using namespace Pinetime::Applications::Widgets;

Counter::Counter(int min, int max) : min {min}, max {max} {
}

void Counter::upBtnEventHandler(lv_obj_t* obj, lv_event_t event) {
  auto* widget = static_cast<Counter*>(obj->user_data);
  if (event == LV_EVENT_SHORT_CLICKED || event == LV_EVENT_LONG_PRESSED_REPEAT) {
    widget->Increment();
  }
}

void Counter::downBtnEventHandler(lv_obj_t* obj, lv_event_t event) {
  auto* widget = static_cast<Counter*>(obj->user_data);
  if (event == LV_EVENT_SHORT_CLICKED || event == LV_EVENT_LONG_PRESSED_REPEAT) {
    widget->Decrement();
  }
}

void Counter::Increment() {
  value++;
  if (value > max) {
    value = min;
  }
  UpdateLabel();
};

void Counter::Decrement() {
  value--;
  if (value < min) {
    value = max;
  }
  UpdateLabel();
};

void Counter::SetValue(int newValue) {
  value = newValue;
  UpdateLabel();
}

void Counter::UpdateLabel() {
  lv_label_set_text_fmt(number, "%.2i", value);
}

void Counter::Create() {
  constexpr lv_color_t bgColor = LV_COLOR_MAKE(0x38, 0x38, 0x38);

  counterContainer = lv_obj_create(lv_scr_act(), nullptr);
  lv_obj_set_style_local_bg_color(counterContainer, LV_BTN_PART_MAIN, LV_STATE_DEFAULT, bgColor);

  number = lv_label_create(counterContainer, nullptr);
  lv_obj_set_style_local_text_font(number, LV_LABEL_PART_MAIN, LV_STATE_DEFAULT, &jetbrains_mono_76);
  lv_obj_align(number, nullptr, LV_ALIGN_CENTER, 0, 0);
  lv_obj_set_auto_realign(number, true);
  lv_label_set_text_static(number, "00");

  static const uint8_t padding = 5;
  const uint8_t width = lv_obj_get_width(number) + padding * 2;
  static const uint8_t btnHeight = 50;
  const uint8_t containerHeight = btnHeight * 2 + lv_obj_get_height(number) + padding * 2;

  lv_obj_set_size(counterContainer, width, containerHeight);

  UpdateLabel();

  upBtn = lv_btn_create(counterContainer, nullptr);
  lv_obj_set_style_local_bg_color(upBtn, LV_BTN_PART_MAIN, LV_STATE_DEFAULT, bgColor);
  lv_obj_set_size(upBtn, width, btnHeight);
  lv_obj_align(upBtn, nullptr, LV_ALIGN_IN_TOP_MID, 0, 0);
  upBtn->user_data = this;
  lv_obj_set_event_cb(upBtn, upBtnEventHandler);

  lv_obj_t* upLabel = lv_label_create(upBtn, nullptr);
  lv_obj_set_style_local_text_font(upLabel, LV_LABEL_PART_MAIN, LV_STATE_DEFAULT, &jetbrains_mono_42);
  lv_label_set_text_static(upLabel, "+");
  lv_obj_align(upLabel, nullptr, LV_ALIGN_CENTER, 0, 0);

  downBtn = lv_btn_create(counterContainer, nullptr);
  lv_obj_set_style_local_bg_color(downBtn, LV_BTN_PART_MAIN, LV_STATE_DEFAULT, bgColor);
  lv_obj_set_size(downBtn, width, btnHeight);
  lv_obj_align(downBtn, nullptr, LV_ALIGN_IN_BOTTOM_MID, 0, 0);
  downBtn->user_data = this;
  lv_obj_set_event_cb(downBtn, downBtnEventHandler);

  lv_obj_t* downLabel = lv_label_create(downBtn, nullptr);
  lv_obj_set_style_local_text_font(downLabel, LV_LABEL_PART_MAIN, LV_STATE_DEFAULT, &jetbrains_mono_42);
  lv_label_set_text_static(downLabel, "-");
  lv_obj_align(downLabel, nullptr, LV_ALIGN_CENTER, 0, 0);

  static lv_point_t line_points[] = {{0, 0}, {width, 0}};

  lv_obj_t* upperLine = lv_line_create(counterContainer, nullptr);
  lv_line_set_points(upperLine, line_points, 2);
  lv_obj_set_style_local_line_width(upperLine, LV_LINE_PART_MAIN, LV_STATE_DEFAULT, 1);
  lv_obj_set_style_local_line_color(upperLine, LV_LINE_PART_MAIN, LV_STATE_DEFAULT, LV_COLOR_WHITE);
  lv_obj_set_style_local_line_opa(upperLine, LV_LINE_PART_MAIN, LV_STATE_DEFAULT, LV_OPA_20);
  lv_obj_align(upperLine, upBtn, LV_ALIGN_OUT_BOTTOM_MID, 0, 0);

  lv_obj_t* lowerLine = lv_line_create(counterContainer, nullptr);
  lv_line_set_points(lowerLine, line_points, 2);
  lv_obj_set_style_local_line_width(lowerLine, LV_LINE_PART_MAIN, LV_STATE_DEFAULT, 1);
  lv_obj_set_style_local_line_color(lowerLine, LV_LINE_PART_MAIN, LV_STATE_DEFAULT, LV_COLOR_WHITE);
  lv_obj_set_style_local_line_opa(lowerLine, LV_LINE_PART_MAIN, LV_STATE_DEFAULT, LV_OPA_20);
  lv_obj_align(lowerLine, downBtn, LV_ALIGN_OUT_TOP_MID, 0, -1);
}