Foo f1;

void setup(){
  size(300,300);
  cursor(CROSS);
  f1 = new Foo(60,90,150,100);

}

void draw(){
  background(200);
  f1.display();
  if(f1.contains(mouseX, mouseY)){
    f1.setColor(color(255,0,0));
  }
  else {
    f1.setColor(color(0,0,255));
  }
}

class Foo {
  // Top left
  public int x,y;
  // width and height
  public int w,h; 

  private int fillCol;

  public Foo(int xx, int yy, int ww, int hh){
    x = xx;
    y = yy;
    w = ww;
    h = hh;
    fillCol = color(0,0,255);
  }

  public void display(){
    fill(fillCol);
    noStroke();
    rect(x,y,w,h);
  }

  public void setColor(int col){
    fillCol = col;
  }
  
  // See if point px,py is inside the shape
  public boolean contains(int px, int py){
    if(px >= x && px <= x + w && py>=y && py<= y+h){
      return true;
    }
    else {
      return false;
    }
  }
}
 

import de.bezier.data.*;

XlsReader reader;
PFont font;

AreaObject areaObjectItem;//my object.

int arraysLength = 651;
int alongValue = 0;
int upValue = 1;
int columnValue;
int rowValue;

int sortMode = 0;
int objectColumnValue;
int objectRowValue;

int blockWidth = 50;
float howManyColumnsFloat;
int howManyColumns;
float numOfRowsFloat;
int blockHeight;

int blockNumber;
int blockNumber2;

int zoomToMouseXValue;
int zoomToMouseYValue;
String zoomMode = "zoomed in";

int shiftDownRowValue = 0;
int blockNumberInRow = 0;
int updateEverything;

ArrayList areaItemsArray = new ArrayList();//arrayList of objects.

class AreaObject{//define my class.

  //next list the object's attributes.
  String constituencyValue;
  float voterPowerValue;
  String party;
  int popSizeValue;
  int num;
  String mode;
  float thisBlockXValue;
  float thisBlockYValue;
  public int x,y;//top left corner of my object(rectangle)
  public int w,h;//width & height of my object's width & height.
  private int fillCol;
  
  //this is the constructor.
  public AreaObject(String tempConstituencyValue, float tempVoterPowerValue, String tempParty, int tempPopSizeValue, int tempNum, String tempMode, int xx, int yy, int ww, int hh) {
    constituencyValue = tempConstituencyValue;
    voterPowerValue = tempVoterPowerValue;
    party = tempParty;
    popSizeValue = tempPopSizeValue;
    num = tempNum;
    mode = tempMode;
    
    x = xx;
    y = yy;
    w = ww;
    h = hh;
    
    if(party.equals("LD") == true){
      fillCol = color(247, 207, 0, map(voterPowerValue, 0, 1.3, 0, 255));
    }else if(party.equals("Lab") == true){
      fillCol = color(216, 59, 31);
    }else if(party.equals("C") == true){
      fillCol = color(61, 9, 234);
    }else{
      fillCol = (255);
    }
    
  }
  
  void display(int i){
    num = i;
    
    rectMode(CENTER);
    noStroke();
    fill(fillCol);
    rect(x, y, blockWidth-5, blockHeight-5);
    
    if(mode.equals("blockSelectedMode") == true){// blockSelectedMode means "if cursor is over block"...
      fill(fillCol);

    }
  }
  
  
  public void setColor(int col){
    fillCol = col;
  }
  
  
  public boolean contains(int px, int py){
    if((px >= (x-(w/2)) && (px <= (x + (w/2))) && (py>=y && py<= y+h))){
      return true;
    }
    else {
      return false;
    }
  }
  
  
  void updateBlockXYPos(){
     x = round(screenX(x, y));
     y = round(screenY(x, y));
  }
  
  
}//end of class.


void setup(){
  //println(PGraphicsPDF.listFonts());
  size(1000, 800);
  frameRate(30);
  //background(0);
  reader = new XlsReader( this, "voterPower.xls");
  font = createFont("Futura", 10);
  textFont(font);
  
howManyColumnsFloat = (width-200)/blockWidth;
howManyColumns = ceil(howManyColumnsFloat);
numOfRowsFloat = arraysLength/howManyColumns;
blockHeight = floor((height-200)/(1.5*numOfRowsFloat));
   
   for(int i=1; i<arraysLength; i++){
    areaItemsArray.add(new AreaObject(reader.getString(i, 1), reader.getFloat(i, 2), reader.getString(i, 6), round(reader.getFloat(i, 11)), i, "", 0, 0, blockWidth, blockHeight));
   }
   
   mouseX = width/2;
   mouseY = height/2;
}//end of setup.



void draw(){
  background(0);

blockNumberInRow = 0;
shiftDownRowValue = 0;
 for(int i=0; i<areaItemsArray.size(); i++){//draws all blocks out.
  blockNumberInRow++;

    AreaObject currentAreaObjectItem = (AreaObject) areaItemsArray.get(i);//get my object..
 if( (blockNumberInRow*blockWidth) < (width-blockWidth)){
   
    if(updateEverything<2){
          currentAreaObjectItem.x = blockNumberInRow*blockWidth;//translate it like this instead of translate()..
              currentAreaObjectItem.y = 100+(shiftDownRowValue*blockHeight);
    currentAreaObjectItem.updateBlockXYPos();//update the object's x & y (or it thinks it is at 0,0).

    }
    
    if(currentAreaObjectItem.contains(mouseX, mouseY)){//change attributes/modes
      currentAreaObjectItem.mode = "blockSelectedMode";
      currentAreaObjectItem.setColor(255);
    }else{
      currentAreaObjectItem.setColor(color(0,90,255));
    }
    currentAreaObjectItem.display(i);//display the object!
    
  if(blockNumberInRow>15){
    blockNumberInRow = 0;
    shiftDownRowValue++;
  }
    
 }

    println("shiftDownRowValue "+shiftDownRowValue);
    println("blockNumberInRow "+blockNumberInRow);
   }//end of all blocks loop.
      updateEverything++;
 
}//end of draw.