esp32-node/src/screen.cpp

#include "screen.h"

void Screen::next() { Serial.println("unhandled next"); }
void Screen::previous() { Serial.println("unhandled previous"); }
uint8_t Screen::select() { Serial.println("unhandled select"); }

SelectionList::SelectionList() {}

SelectionList::SelectionList(const char* title, uint8_t start_pos, const char* string_list) {}

void SelectionList::draw() {
  uint8_t item_x_offset = 15;
  uint8_t header_height = 12;
  uint8_t item_height = 12;
  uint8_t num_active_item = current_pos - top_item;

  u8g2.clearBuffer();

  /* draw Title */
  u8g2.setFont(u8g2_font_guildenstern_nbp_tr);
  u8g2.drawUTF8(2,header_height-2,title);
  u8g2.drawLine(0,header_height,u8g2.getDisplayWidth(),header_height);

  /* draw menu items */
  u8g2.setFont(u8g2_font_9x18B_tr);
  for (int i=0; i<visible; i++) {
      u8g2.drawUTF8(item_x_offset,header_height+2+(i+1)*item_height,string_list[top_item+i].c_str());
  }

  u8g2.drawFrame(0,header_height+1+num_active_item*item_height,u8g2.getDisplayWidth(),item_height+2 );
  u8g2.sendBuffer();          // transfer internal memory to the display
}

void SelectionList::next() {
  if (current_pos < string_list.size()-1) current_pos++;
  if (current_pos > top_item+visible-1) top_item++;
}

void SelectionList::previous() {
  if (current_pos > 0 ) current_pos--;
  if (current_pos < top_item) top_item--;
}

uint8_t SelectionList::select() {
  return current_pos;
}

namespace {

  void Drawgauge(int x, byte y, byte r, byte p, int v, int minVal, int maxVal ) {
  int n=(r/100.00)*p; // calculate needle percent lenght

                float gs_rad=-1.572; //-90 degrees in radiant
                float ge_rad=0;
                float i=((v-minVal)*(ge_rad-gs_rad)/(maxVal-minVal)+gs_rad);
                int xp = x+(sin(i) * n);
                int yp = y-(cos(i) * n);
                   u8g2.drawCircle(x,y,r, U8G2_DRAW_UPPER_LEFT );
                   u8g2.drawLine(x,y,xp,yp); 

                gs_rad=0;
                ge_rad=1.572; //90 degrees in radiant
                i=((v-minVal)*(ge_rad-gs_rad)/(maxVal-minVal)+gs_rad);
                xp = x+(cos(i) * n);
                yp = y-(sin(i) * n);
                   u8g2.drawCircle(x,y,r, U8G2_DRAW_UPPER_RIGHT );
                   u8g2.drawLine(x,y,xp,yp); 

                gs_rad=-1.572;
                ge_rad=1.572;
                i=((v-minVal)*(ge_rad-gs_rad)/(maxVal-minVal)+gs_rad);
                xp = x+(sin(i) * n);
                yp = y-(cos(i) * n);
                   u8g2.drawCircle(x,y,r, U8G2_DRAW_UPPER_LEFT|U8G2_DRAW_UPPER_RIGHT );
                   u8g2.drawLine(x,y,xp,yp); 

                gs_rad=-3.142;
                ge_rad=1.572;
                i=((v-minVal)*(ge_rad-gs_rad)/(maxVal-minVal)+gs_rad);
                xp = x+(sin(i) * n);
                yp = y-(cos(i) * n);
                   u8g2.drawCircle(x,y,r, U8G2_DRAW_UPPER_LEFT|U8G2_DRAW_UPPER_RIGHT|U8G2_DRAW_LOWER_LEFT ); 
                   u8g2.drawLine(x,y,xp,yp); 

                gs_rad=-1.572;
                ge_rad=3.141;
                i=((v-minVal)*(ge_rad-gs_rad)/(maxVal-minVal)+gs_rad);
                xp = x+(sin(i) * n);
                yp = y-(cos(i) * n);
                  u8g2.drawCircle(x,y,r, U8G2_DRAW_UPPER_LEFT|U8G2_DRAW_UPPER_RIGHT|U8G2_DRAW_LOWER_RIGHT );
                  u8g2.drawLine(x,y,xp,yp); 
  }
}

void MainScreen::draw() {
  u8g2.clearBuffer();          // clear the internal memory

  if(millis() - lastVolumeChange <= 1000) {
    //u8g2.drawXBMP(0,0, IMG_1872_width, IMG_1872_height, IMG_1872_bits);
    u8g2.setFont(u8g2_font_inb19_mf);
    u8g2.drawStr(20, 20, "Volume");

    u8g2.drawRBox(10, 28, 108, 22, 5);
    u8g2.setDrawColor(0);
    u8g2.drawBox(14+volume, 31, 100-volume, 14);
    char volumeStr[6];
    sprintf(volumeStr, "%d %%", volume);
    u8g2.setFont(u8g2_font_crox3cb_mf);
    u8g2.setFontMode(1);
    u8g2.setDrawColor(2);
    u8g2.drawStr(40, 45, volumeStr);
    u8g2.setFontMode(0);
    u8g2.setDrawColor(1);
  } else {

    u8g2.setFont(u8g2_font_inb19_mf);
    u8g2.drawStr(0, 20, timeStr);

    char weather[32];
    u8g2.setFont(u8g2_font_profont12_mf); // choose a suitable font
    sprintf(weather, "%.1f°C  %.1f%%  %.0fhPa", bme280.readTemperature(), bme280.readHumidity(), bme280.readPressure());
    u8g2.drawUTF8(0, 30, weather);
    u8g2.setFont(u8g2_font_prospero_bold_nbp_tf); // choose a suitable font

    u8g2_uint_t width = u8g2.getUTF8Width(titleStr); // calculate the pixel width of the text
								// repeated drawing of the scrolling text...
    u8g2.drawUTF8(titleStr_offset, 54, titleStr);			// draw the scolling text

    titleStr_offset-=4;							// scroll by one pixel
    if ( (u8g2_uint_t)titleStr_offset < (u8g2_uint_t)-width )
      titleStr_offset = 0; // start over again // u8g2.getDisplayWidth()
  }
  u8g2.sendBuffer();
//  bme280.printValues();
}

uint8_t MainScreen::select() {
    if(millis() - lastButtonPress >= 1000) {
    Serial.println("Button pressed");
      lastButtonPress = millis();
      if (mp3.playing) {
        mp3.stop();
      } else {
        mp3.start();
      }
    }
}

void MainScreen::next() {
  if (volume < 100) volume++;
  lastVolumeChange = millis();
  mp3.setVolume(volume);
  Serial.printf("volume: %d\n", volume);
}

void MainScreen::previous() {
  if (volume > 0) volume--;
  lastVolumeChange = millis();
  mp3.setVolume(volume);
  Serial.printf("volume: %d\n", volume);
}