ActuallyAdditions/src/main/java/de/ellpeck/actuallyadditions/mod/booklet/button/EntryButton.java

/*
 * This file ("EntryButton.java") is part of the Actually Additions mod for Minecraft.
 * It is created and owned by Ellpeck and distributed
 * under the Actually Additions License to be found at
 * http://ellpeck.de/actaddlicense
 * View the source code at https://github.com/Ellpeck/ActuallyAdditions
 *
 * © 2015-2017 Ellpeck
 */

package de.ellpeck.actuallyadditions.mod.booklet.button;

import de.ellpeck.actuallyadditions.api.booklet.internal.GuiBookletBase;
import de.ellpeck.actuallyadditions.mod.util.AssetUtil;
import de.ellpeck.actuallyadditions.mod.util.StackUtil;
import de.ellpeck.actuallyadditions.mod.util.StringUtil;
import net.minecraft.client.Minecraft;
import net.minecraft.client.gui.GuiButton;
import net.minecraft.client.renderer.GlStateManager;
import net.minecraft.item.ItemStack;
import net.minecraftforge.fml.relauncher.Side;
import net.minecraftforge.fml.relauncher.SideOnly;

@SideOnly(Side.CLIENT)
public class EntryButton extends GuiButton{

    private final GuiBookletBase gui;
    private final ItemStack stackToRender;

    public EntryButton(GuiBookletBase gui, int id, int x, int y, int width, int height, String text, ItemStack stackToRender){
        super(id, x, y, width, height, text);
        this.gui = gui;
        this.stackToRender = stackToRender;
    }

    @Override
    public void drawButton(Minecraft minecraft, int mouseX, int mouseY, float f){
        if(this.visible){
            GlStateManager.color(1.0F, 1.0F, 1.0F, 1.0F);
            this.hovered = mouseX >= this.x && mouseY >= this.y && mouseX < this.x+this.width && mouseY < this.y+this.height;
            GlStateManager.enableBlend();
            GlStateManager.tryBlendFuncSeparate(770, 771, 1, 0);
            GlStateManager.blendFunc(770, 771);
            this.mouseDragged(minecraft, mouseX, mouseY);

            int textOffsetX = 0;
            if(StackUtil.isValid(this.stackToRender == null ? ItemStack.EMPTY : this.stackToRender)){
                GlStateManager.pushMatrix();
                AssetUtil.renderStackToGui(this.stackToRender, this.x-4, this.y, 0.725F);
                GlStateManager.popMatrix();
                textOffsetX = 10;
            }

            float scale = this.gui.getMediumFontSize();

            if(this.hovered){
                GlStateManager.pushMatrix();
                AssetUtil.drawHorizontalGradientRect(this.x+textOffsetX-1, this.y+this.height-1, this.x+(int)(minecraft.fontRenderer.getStringWidth(this.displayString)*scale)+textOffsetX+1, this.y+this.height, 0x80 << 24 | 22271, 22271, this.zLevel);
                GlStateManager.popMatrix();
            }

            StringUtil.renderScaledAsciiString(minecraft.fontRenderer, this.displayString, this.x+textOffsetX, this.y+2+(this.height-8)/2, 0, false, scale);
        }
    }
}