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path: root/src/main/java/me/xmrvizzy/skyblocker/skyblock/quicknav/QuickNavButton.java
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package me.xmrvizzy.skyblocker.skyblock.quicknav;

import com.mojang.blaze3d.systems.RenderSystem;
import me.xmrvizzy.skyblocker.mixin.HandledScreenAccessor;
import net.fabricmc.api.EnvType;
import net.fabricmc.api.Environment;
import net.minecraft.client.MinecraftClient;
import net.minecraft.client.gui.screen.Screen;
import net.minecraft.client.gui.screen.ingame.HandledScreen;
import net.minecraft.client.gui.screen.narration.NarrationMessageBuilder;
import net.minecraft.client.gui.widget.ClickableWidget;
import net.minecraft.client.util.math.MatrixStack;
import net.minecraft.item.ItemStack;
import net.minecraft.text.LiteralText;
import net.minecraft.util.Identifier;

@Environment(value=EnvType.CLIENT)
public class QuickNavButton extends ClickableWidget {
    private static final MinecraftClient CLIENT = MinecraftClient.getInstance();
    private static final Identifier BUTTON_TEXTURE = new Identifier("textures/gui/container/creative_inventory/tabs.png");

    @Override
    public void appendNarrations(NarrationMessageBuilder builder) {

    }

    private int index;
    private boolean toggled;
    private int u;
    private int v;
    private final String command;
    private final ItemStack icon;

    public QuickNavButton(int index, boolean toggled, String command, ItemStack icon) {
        super(0, 0, 28, 32, LiteralText.EMPTY);
        this.index = index;
        this.toggled = toggled;
        this.command = command;
        this.icon = icon;
    }

    private void updateCoordinates() {
        Screen screen = MinecraftClient.getInstance().currentScreen;
        if (screen instanceof HandledScreen<?>) {
            HandledScreen<?> handledScreen = (HandledScreen<?>) screen;
            int x = ((HandledScreenAccessor)handledScreen).getX();
            int y = ((HandledScreenAccessor)handledScreen).getY();
            int w = ((HandledScreenAccessor)handledScreen).getBackgroundWidth();
            int h = ((HandledScreenAccessor)handledScreen).getBackgroundHeight();
            if (h > 166) --h; // why is this even a thing
            this.x = x + this.index % 6 * 28 + 4;
            this.y = this.index < 6 ? y - 28 : y + h - 4;
            this.u = 28;
            this.v = (index < 6 ? 0 : 64) + (toggled ? 32 : 0);
        }
    }

    @Override
    public void onClick(double mouseX, double mouseY) {
        if (!this.toggled) {
            this.toggled = true;
            CLIENT.player.sendChatMessage(command);
        }
    }

    @Override
    public void renderButton(MatrixStack matrices, int mouseX, int mouseY, float delta) {
        this.updateCoordinates();
        RenderSystem.setShaderTexture(0, BUTTON_TEXTURE);
        RenderSystem.disableDepthTest();
        // render button background
        if (!this.toggled) {
            if (this.index >= 6)
                this.drawTexture(matrices, this.x, this.y + 4, this.u, this.v + 4, this.width, this.height - 4);
            else
                this.drawTexture(matrices, this.x, this.y, this.u, this.v, this.width, this.height - 4);
        } else this.drawTexture(matrices, this.x, this.y, this.u, this.v, this.width, this.height);
        // render button icon
        if (!this.toggled) {
            if (this.index >= 6)
                CLIENT.getItemRenderer().renderInGui(this.icon,this.x + 6, this.y + 6);
            else
                CLIENT.getItemRenderer().renderInGui(this.icon,this.x + 6, this.y + 9);
        } else {
            if (this.index >= 6)
                CLIENT.getItemRenderer().renderInGui(this.icon,this.x + 6, this.y + 9);
            else
                CLIENT.getItemRenderer().renderInGui(this.icon,this.x + 6, this.y + 6);
        }
        RenderSystem.enableDepthTest();
    }
}