// ************************************************************************************************
//
// Documentation for this, and the rest of the LC libraies that make this up.
// Here's the book : https://github.com/leftCoast/LC_libraryDocs/blob/main/LC_libraries.pdf
// Search for : slider
//
// ************************************************************************************************

#include <adafruit_1947.h>  // Screen lib.
#include <eventMgr.h>       // Interaction manager.
#include <label.h>          // A display.
#include <slider.h>         // The slider class we're showing off today.

#define DSP_CS    10    // Display chip select 

slider*   aSlider;      // The slider to slide about.
label*    alabel;
colorObj  backColor;    // We setup a colorObj for the backGndRect color of the display.
int       sliderValue;

// The way setup() works here is mostly for hardware setup. If that all works?
// Then we go on to setup the srceen object and controls.
void setup() {
  
  Serial.begin(115200);
  Serial.println("Sliders");
  screen = (displayObj*) new adafruit_1947(DSP_CS,-1);  // Create our screen object.
  if (screen) {                                         // We got one? Cool!
    if (screen->begin()) {                              // Can we successfully call begin on the screen?
      screen->setRotation(PORTRAIT);                    // Ok, set portrait. Good for handhelds.
      ourEventMgr.begin();                              // We are looking for touch sceen action! Fire up the even manager.
      setupScreen();                                    // Populate the screen.
      return;                                           // Everything fired up successfuly. Lets go!
    }                                                   //
  }                                                     //
  Serial.println("NO SCREEN!");                         // Send an error out the serial port.
  while(true)delay(10);                                 // Lock processor here forever.
}


// Extension to setup() that puts all the scren bits and things together.
void setupScreen(void) {
  
  // Setup backGndRect display color.
  backColor.setColor(&blue);                      // Set this color object to blue.
  backColor.blend(&white,70);                     // Lets lighten it, mixin some white.
  screen->fillScreen(&backColor);                 // A command to "screen" happens (NOW). Objects update later.

  //aSlider = new slider(20,40,20,120,true);        // Create a vertical slider object.   <<<=== Choose one
  aSlider = new slider(20,40,120,20,false);       // Create a horizontal slider object.   <<<=== or the other.
  alabel  = new label(60,70,150,16);              // Create a label.
  if (aSlider&&alabel) {                          // If we got one..
    aSlider->setColors(&blue,&backColor);         // Set it's color pallette. KNob color, background color.
    alabel->setColors(&blue,&backColor);          // Make a label.
    viewList.addObj(aSlider);                     // Add the slider (It's a pointer) to the view list to be managed.
    viewList.addObj(alabel);                      // And the label (It's also a pointer) to the view list to be managed.
    sliderValue = -1;                             // -1 flags as a value it can't attain.
  } else {                                        // Didn't get a slider?
    Serial.println("No slider!");                 // Tell Miss user.
    while(true)delay(10);                         // Lock processor here forever.
  }                                               //
}


// In loop, make a call to idle. 
void loop() {
  
  float newValue;
  int   newIntValue;

  idle();                               // Runs all the mnagic.
  newValue = aSlider->getValue();       // Read the slider value.
  newIntValue = round(newValue);        // Round it to an integer.
  if (sliderValue!=newIntValue) {       // If not the same as the saved value..
      alabel->setValue(newIntValue);    // Show the new value.
      sliderValue = newIntValue;        // Up date the saved value to the new value.
  }                                     //
}