aether-legacy/src/main/java/com/gildedgames/the_aether/client/gui/GuiLore.java

package com.gildedgames.the_aether.client.gui;

import java.util.List;

import com.gildedgames.the_aether.Aether;
import com.gildedgames.the_aether.client.gui.button.GuiLoreButton;
import com.gildedgames.the_aether.inventory.ContainerLore;
import com.gildedgames.the_aether.registry.AetherLore;
import net.minecraft.client.gui.Gui;
import net.minecraft.client.gui.GuiButton;
import net.minecraft.client.gui.inventory.GuiContainer;
import net.minecraft.client.resources.I18n;
import net.minecraft.entity.player.InventoryPlayer;
import net.minecraft.item.ItemStack;
import net.minecraft.util.ResourceLocation;
import org.lwjgl.opengl.GL11;

public class GuiLore extends GuiContainer {
    private static final ResourceLocation TEXTURE_LORE
        = Aether.locate("textures/gui/lore.png");

    private static final ResourceLocation TEXTURE_LORE_BOOK
        = Aether.locate("textures/gui/lore_book.png");

    private String stringToLoad;

    private ItemStack currentItem;

    private GuiButton previousPage, nextPage;

    private int pageNumber;

    public GuiLore(InventoryPlayer inventoryplayer) {
        super(new ContainerLore(inventoryplayer));

        this.xSize = 256;
        this.ySize = 195;
    }

    @SuppressWarnings("unchecked")
    public void initGui() {
        super.initGui();

        this.previousPage = new GuiLoreButton(
            19, this.width / 2 - 110, this.height / 2 + 72, 20, 20, "<"
        );
        this.nextPage = new GuiLoreButton(
            20, this.width / 2 + 90, this.height / 2 + 72, 20, 20, ">"
        );

        this.buttonList.add(this.previousPage);
        this.buttonList.add(this.nextPage);
    }

    @Override
    protected void actionPerformed(GuiButton button) {
        if (this.previousPage == button) {
            --this.pageNumber;
        } else if (this.nextPage == button) {
            ++this.pageNumber;
        }
    }

    @Override
    @SuppressWarnings("unchecked")
    protected void drawGuiContainerForegroundLayer(int par1, int par2) {
        this.fontRendererObj.drawString("Prev.", 16, 160, 4210752);
        this.fontRendererObj.drawString("Next", 218, 160, 4210752);

        this.fontRendererObj.drawString("Book", 32, -5, 4210752);
        this.fontRendererObj.drawString("of Lore:", 24, 4, 4210752);

        this.fontRendererObj.drawString("Item :", 75, 0, 4210752);

        ItemStack searchedStack
            = ((ContainerLore) this.inventorySlots).loreSlot.getStackInSlot(0);

        if (searchedStack != null) {
            if (this.currentItem == null
                || (searchedStack.getItem() != this.currentItem.getItem()
                    || (!searchedStack.isItemStackDamageable()
                        && searchedStack.getItemDamage()
                            != this.currentItem.getItemDamage()))) {
                this.pageNumber = 0;
                this.stringToLoad
                    = I18n.format(AetherLore.getLoreEntryKey(searchedStack));
                this.currentItem = searchedStack;
            }

            int nameSize = 0;

            for (String name :
                 ((List<String>) this.fontRendererObj.listFormattedStringToWidth(
                     searchedStack.getItem().getItemStackDisplayName(searchedStack), 109
                 ))) {
                this.drawCenteredString(
                    this.fontRendererObj,
                    searchedStack.getRarity().rarityColor.toString() + name,
                    71,
                    18 + (10 * nameSize),
                    4210752
                );

                ++nameSize;
            }

            int size = 0;

            for (String lore :
                 ((List<String>) this.fontRendererObj.listFormattedStringToWidth(
                     this.stringToLoad, 109
                 ))) {
                if (size >= 15 * this.pageNumber
                    && size + (nameSize - 1) <= 15 * (this.pageNumber + 1)) {
                    int actualSize = this.pageNumber >= 1
                        ? size - ((15 - (nameSize - 1)) * this.pageNumber)
                        : size + (nameSize - 1);

                    this.fontRendererObj.drawString(
                        lore,
                        (((actualSize >= 6 ? 184 : 71))
                         - this.fontRendererObj.getStringWidth(lore) / 2),
                        (actualSize >= 6 ? -68 : 28) + (10 * actualSize),
                        4210752
                    );
                }

                size++;
            }

            this.previousPage.enabled = this.pageNumber != 0;
            this.nextPage.enabled = size > (15 * (this.pageNumber + 1));
        } else {
            this.pageNumber = 0;
            this.stringToLoad = "";
            this.currentItem = null;
        }
    }

    @Override
    protected void drawGuiContainerBackgroundLayer(float f, int i1, int i2) {
        GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);

        int j = (this.width - this.xSize) / 2;
        int k = (this.height - this.ySize) / 2;

        this.mc.renderEngine.bindTexture(TEXTURE_LORE);
        Gui.func_152125_a(
            j, k - 4, 0, 0, 120, 120, this.xSize, this.ySize + 61, 120, 120
        );

        this.mc.renderEngine.bindTexture(TEXTURE_LORE_BOOK);
        Gui.func_146110_a(
            j - 1, k - 20, 0, 0, this.xSize + 20, this.ySize - 60, 275, 315
        );
        Gui.func_146110_a(
            j + 90, k - 5, 0, 225, this.xSize + 20, this.ySize - 177, 500, 500
        );
    }
}