Gui class

package com.theundertaker11.GeneticsReborn.blocks.cellanalyser;

import net.minecraft.client.Minecraft;
import net.minecraft.client.gui.inventory.GuiContainer;
import net.minecraft.client.renderer.GlStateManager;
import net.minecraft.entity.player.InventoryPlayer;
import net.minecraft.util.ResourceLocation;
import net.minecraftforge.fml.relauncher.Side;
import net.minecraftforge.fml.relauncher.SideOnly;

import java.awt.*;
import java.util.ArrayList;
import java.util.List;

import com.theundertaker11.GeneticsReborn.Reference;

/**
 * User: brandon3055
 * Date: 06/01/2015
 *
 * GuiInventoryAdvanced is a gui similar to that of a furnace. It has a progress bar and a burn time indicator.
 * Both indicators have mouse over text
 */
@SideOnly(Side.CLIENT)
public class GuiCellAnalyser extends GuiContainer {

	// This is the resource location for the background image
	private static final ResourceLocation texture = new ResourceLocation(Reference.MODID, "textures/gui/GuiCellAnalyser_bg.png");
	private GRTileEntityCellAnalyser tileEntity;

	public GuiCellAnalyser(InventoryPlayer invPlayer, GRTileEntityCellAnalyser tileInventory){
		super(new ContainerCellAnalyser(invPlayer, tileInventory));

		// Set the width and height of the gui
		xSize = 176;
		ySize = 207;

		this.tileEntity = tileInventory;
	}

	// some [x,y] coordinates of graphical elements
	final int COOK_BAR_XPOS = 49;
	final int COOK_BAR_YPOS = 60;
	final int COOK_BAR_ICON_U = 0;   // texture position of white arrow icon
	final int COOK_BAR_ICON_V = 207;
	final int COOK_BAR_WIDTH = 80;
	final int COOK_BAR_HEIGHT = 17;

	final int FLAME_XPOS = 54;
	final int FLAME_YPOS = 80;
	final int FLAME_ICON_U = 176;   // texture position of flame icon
	final int FLAME_ICON_V = 0;
	final int FLAME_WIDTH = 14;
	final int FLAME_HEIGHT = 14;
	final int FLAME_X_SPACING = 18;

	@Override
	protected void drawGuiContainerBackgroundLayer(float partialTicks, int x, int y) {
		// Bind the image texture
		Minecraft.getMinecraft().getTextureManager().bindTexture(texture);
		// Draw the image
		GlStateManager.color(1.0F, 1.0F, 1.0F, 1.0F);
		drawTexturedModalRect(guiLeft, guiTop, 0, 0, xSize, ySize);

		// get cook progress as a double between 0 and 1
		double cookProgress = tileEntity.percComplete();
		// draw the cook progress bar
		drawTexturedModalRect(guiLeft + COOK_BAR_XPOS, guiTop + COOK_BAR_YPOS, COOK_BAR_ICON_U, COOK_BAR_ICON_V,
						              (int)(cookProgress * COOK_BAR_WIDTH), COOK_BAR_HEIGHT);

		// draw the fuel remaining bar for each fuel slot flame
		double energyRemaining = tileEntity.fractionOfEnergyRemaining();
		int yOffset = (int)((1.0 - energyRemaining) * FLAME_HEIGHT);
		drawTexturedModalRect(guiLeft + FLAME_XPOS + FLAME_X_SPACING * 0, guiTop + FLAME_YPOS + yOffset,
														FLAME_ICON_U, FLAME_ICON_V + yOffset, FLAME_WIDTH, FLAME_HEIGHT - yOffset);
	}

	@Override
	protected void drawGuiContainerForegroundLayer(int mouseX, int mouseY) {
		super.drawGuiContainerForegroundLayer(mouseX, mouseY);

		final int LABEL_XPOS = 5;
		final int LABEL_YPOS = 5;
		fontRendererObj.drawString("Cell Analyser", LABEL_XPOS, LABEL_YPOS, Color.darkGray.getRGB());

		List<String> hoveringText = new ArrayList<String>();

		// If the mouse is over the progress bar add the progress bar hovering text
		if (isInRect(guiLeft + COOK_BAR_XPOS, guiTop + COOK_BAR_YPOS, COOK_BAR_WIDTH, COOK_BAR_HEIGHT, mouseX, mouseY))
		{
			hoveringText.add("Energy:");
			int cookPercentage =(int)(tileEntity.fractionOfEnergyRemaining() * 100);
			hoveringText.add(cookPercentage + "%");
		}

		// If the mouse is over one of the burn time indicator add the burn time indicator hovering text

		if (isInRect(guiLeft + FLAME_XPOS + FLAME_X_SPACING * 0, guiTop + FLAME_YPOS, FLAME_WIDTH, FLAME_HEIGHT, mouseX, mouseY))
		{
				hoveringText.add("Energy:");
				hoveringText.add(tileEntity.getEnergyStored(null) + " RF");
		}

		// If hoveringText is not empty draw the hovering text
		if (!hoveringText.isEmpty()){
			drawHoveringText(hoveringText, mouseX - guiLeft, mouseY - guiTop, fontRendererObj);
		}
//		// You must re bind the texture and reset the colour if you still need to use it after drawing a string
//		Minecraft.getMinecraft().getTextureManager().bindTexture(texture);
//		GlStateManager.color(1.0F, 1.0F, 1.0F, 1.0F);

	}

	// Returns true if the given x,y coordinates are within the given rectangle
	public static boolean isInRect(int x, int y, int xSize, int ySize, int mouseX, int mouseY){
		return ((mouseX >= x && mouseX <= x+xSize) && (mouseY >= y && mouseY <= y+ySize));
	}
}