equivalent-exchange-3/src/main/java/com/pahimar/repackage/cofh/lib/gui/element/ElementSlider.java

package com.pahimar.repackage.cofh.lib.gui.element;

import com.pahimar.ee3.reference.Textures;
import com.pahimar.repackage.cofh.lib.gui.GuiBase;
import com.pahimar.repackage.cofh.lib.gui.GuiColor;
import net.minecraft.util.ResourceLocation;
import org.lwjgl.opengl.GL11;

public abstract class ElementSlider extends ElementBase
{
    protected int _value;
    protected int _valueMin;
    protected int _valueMax;
    protected int _sliderWidth;
    protected int _sliderHeight;

    protected boolean _isDragging;

    public int borderColor = new GuiColor(120, 120, 120, 255).getColor();
    public int backgroundColor = new GuiColor(0, 0, 0, 255).getColor();

    protected ResourceLocation enabledTexture = Textures.Gui.Elements.BUTTON_ENABLED;
    protected ResourceLocation hoverTexture = Textures.Gui.Elements.BUTTON_HOVER;
    protected ResourceLocation disabledTexture = Textures.Gui.Elements.BUTTON_DISABLED;

    protected ElementSlider(GuiBase containerScreen, int x, int y, int width, int height, int maxValue)
    {
        this(containerScreen, x, y, width, height, maxValue, 0);
    }

    protected ElementSlider(GuiBase containerScreen, int x, int y, int width, int height, int maxValue, int minValue)
    {
        super(containerScreen, x, y, width, height);
        _valueMax = maxValue;
        _valueMin = minValue;
    }

    public ElementSlider setColor(int backgroundColor, int borderColor)
    {
        this.borderColor = borderColor;
        this.backgroundColor = backgroundColor;
        return this;
    }

    public ElementSlider setSliderSize(int width, int height)
    {
        _sliderWidth = width;
        _sliderHeight = height;
        return this;
    }

    public int getValue()
    {
        return this._value;
    }

    public ElementSlider setValue(int value)
    {
        value = Math.max(_valueMin, Math.min(_valueMax, value));
        if (value != _value)
        {
            _value = value;
            onValueChanged(_value);
        }
        return this;
    }

    @Override
    public void drawBackground(int mouseX, int mouseY, float gameTicks)
    {
        drawModalRect(posX - 1, posY - 1, posX + sizeX + 1, posY + sizeY + 1, borderColor);
        drawModalRect(posX, posY, posX + sizeX, posY + sizeY, backgroundColor);
        GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);
    }

    protected void drawSlider(int mouseX, int mouseY, int sliderX, int sliderY)
    {
        int sliderMidX = _sliderWidth / 2;
        int sliderMidY = _sliderHeight / 2;
        int sliderEndX = _sliderWidth - sliderMidX;
        int sliderEndY = _sliderHeight - sliderMidY;

        if (!isEnabled())
        {
            gui.bindTexture(disabledTexture);
        }
        else if (isHovering(mouseX, mouseY))
        {
            gui.bindTexture(hoverTexture);
        }
        else
        {
            gui.bindTexture(enabledTexture);
        }
        GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);
        drawTexturedModalRect(sliderX, sliderY, 0, 0, sliderMidX, sliderMidY);
        drawTexturedModalRect(sliderX, sliderY + sliderMidY, 0, 256 - sliderEndY, sliderMidX, sliderEndY);
        drawTexturedModalRect(sliderX + sliderMidX, sliderY, 256 - sliderEndX, 0, sliderEndX, sliderMidY);
        drawTexturedModalRect(sliderX + sliderMidX, sliderY + sliderMidY, 256 - sliderEndX, 256 - sliderEndY, sliderEndX, sliderEndY);
    }

    @Override
    public void drawForeground(int mouseX, int mouseY)
    {
        int sliderX = posX + getSliderX();
        int sliderY = posY + getSliderY();

        drawSlider(mouseX, mouseY, sliderX, sliderY);
        GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);
    }

    protected boolean isHovering(int x, int y)
    {
        return intersectsWith(x, y);
    }

    public int getSliderX()
    {
        return 0;
    }

    public int getSliderY()
    {
        return 0;
    }

    @Override
    public boolean onMousePressed(int mouseX, int mouseY, int mouseButton)
    {
        _isDragging = mouseButton == 0;
        update(mouseX, mouseY);
        return true;
    }

    @Override
    public void onMouseReleased(int mouseX, int mouseY)
    {
        if (_isDragging)
        {
            onStopDragging();
        }
        _isDragging = false;
    }

    @Override
    public void update(int mouseX, int mouseY)
    {
        if (_isDragging)
        {
            dragSlider(mouseX - posX, mouseY - posY);
        }
    }

    protected abstract void dragSlider(int x, int y);

    @Override
    public boolean onMouseWheel(int mouseX, int mouseY, int movement)
    {
        if (movement > 0)
        {
            setValue(_value - 1);
        }
        else if (movement < 0)
        {
            setValue(_value + 1);
        }
        return true;
    }

    public void onValueChanged(int value)
    {
        return;
    }

    public void onStopDragging()
    {
        return;
    }

    public void setEnabledTexture(ResourceLocation enabledTexture)
    {
        this.enabledTexture = enabledTexture;
    }

    public void setDisabledTexture(ResourceLocation disabledTexture)
    {
        this.disabledTexture = disabledTexture;
    }

    public void setHoverTexture(ResourceLocation hoverTexture)
    {
        this.hoverTexture = hoverTexture;
    }
}