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 com.mojang.blaze3d.platform.GlStateManager;
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.widget.button.Button;
import net.minecraft.item.ItemStack;
import net.minecraftforge.api.distmarker.Dist;
import net.minecraftforge.api.distmarker.OnlyIn;


@OnlyIn(Dist.CLIENT)
public class EntryButton extends Button {

    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;
        StackUtil.isValid(stackToRender);
        this.stackToRender = stackToRender;
    }

    @Override
    public void drawButton(Minecraft minecraft, int mouseX, int mouseY, float f) {
        if (this.visible) {
            GlStateManager.color3arg(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)) {
                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.font.width(this.displayString) * scale) + textOffsetX + 1, this.y + this.height, 0x80 << 24 | 22271, 22271, this.zLevel);
                GlStateManager._popMatrix();
            }

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