GuiButton.java

package net.minecraft.client.gui;

import cpw.mods.fml.relauncher.Side;
import cpw.mods.fml.relauncher.SideOnly;
import net.minecraft.client.Minecraft;
import net.minecraft.client.audio.PositionedSoundRecord;
import net.minecraft.client.audio.SoundHandler;
import net.minecraft.client.renderer.OpenGlHelper;
import net.minecraft.util.ResourceLocation;
import org.lwjgl.opengl.GL11;

@SideOnly(Side.CLIENT)
public class GuiButton extends Gui
{
    protected static final ResourceLocation buttonTextures = new ResourceLocation("textures/gui/widgets.png");
    /** Button width in pixels */
    public int width;
    /** Button height in pixels */
    public int height;
    /** The x position of this control. */
    public int xPosition;
    /** The y position of this control. */
    public int yPosition;
    /** The string displayed on this control. */
    public String displayString;
    public int id;
    /** True if this control is enabled, false to disable. */
    public boolean enabled;
    /** Hides the button completely if false. */
    public boolean visible;
    protected boolean hovered;
    private static final String __OBFID = "CL_00000668";
    public int packedFGColour;

    public GuiButton(int buttonId, int x, int y, String buttonText)
    {
        this(buttonId, x, y, 200, 20, buttonText);
    }

    public GuiButton(int stateName, int id, int p_i1021_3_, int p_i1021_4_, int p_i1021_5_, String p_i1021_6_)
    {
        this.width = 200;
        this.height = 20;
        this.enabled = true;
        this.visible = true;
        this.id = stateName;
        this.xPosition = id;
        this.yPosition = p_i1021_3_;
        this.width = p_i1021_4_;
        this.height = p_i1021_5_;
        this.displayString = p_i1021_6_;
    }

    /**
     * Returns 0 if the button is disabled, 1 if the mouse is NOT hovering over this button and 2 if it IS hovering over
     * this button.
     */
    public int getHoverState(boolean mouseOver)
    {
        byte b0 = 1;

        if (!this.enabled)
        {
            b0 = 0;
        }
        else if (mouseOver)
        {
            b0 = 2;
        }

        return b0;
    }

    /**
     * Draws this button to the screen.
     */
    public void drawButton(Minecraft mc, int mouseX, int mouseY)
    {
        if (this.visible)
        {
            FontRenderer fontrenderer = mc.fontRendererObj;
            mc.getTextureManager().bindTexture(buttonTextures);
            GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);
            this.hovered = mouseX >= this.xPosition && mouseY >= this.yPosition && mouseX < this.xPosition + this.width && mouseY < this.yPosition + this.height;
            int k = this.getHoverState(this.hovered);
            GL11.glEnable(GL11.GL_BLEND);
            OpenGlHelper.glBlendFunc(770, 771, 1, 0);
            GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);
            this.drawTexturedModalRect(this.xPosition, this.yPosition, 0, 46 + k * 20, this.width / 2, this.height);
            this.drawTexturedModalRect(this.xPosition + this.width / 2, this.yPosition, 200 - this.width / 2, 46 + k * 20, this.width / 2, this.height);
            this.mouseDragged(mc, mouseX, mouseY);
            int l = 14737632;

            if (packedFGColour != 0)
            {
                l = packedFGColour;
            }
            else if (!this.enabled)
            {
                l = 10526880;
            }
            else if (this.hovered)
            {
                l = 16777120;
            }

            this.drawCenteredString(fontrenderer, this.displayString, this.xPosition + this.width / 2, this.yPosition + (this.height - 8) / 2, l);
        }
    }

    /**
     * Fired when the mouse button is dragged. Equivalent of MouseListener.mouseDragged(MouseEvent e).
     */
    protected void mouseDragged(Minecraft mc, int mouseX, int mouseY) {}

    /**
     * Fired when the mouse button is released. Equivalent of MouseListener.mouseReleased(MouseEvent e).
     */
    public void mouseReleased(int mouseX, int mouseY) {}

    /**
     * Returns true if the mouse has been pressed on this control. Equivalent of MouseListener.mousePressed(MouseEvent
     * e).
     */
    public boolean mousePressed(Minecraft mc, int mouseX, int mouseY)
    {
        return this.enabled && this.visible && mouseX >= this.xPosition && mouseY >= this.yPosition && mouseX < this.xPosition + this.width && mouseY < this.yPosition + this.height;
    }

    /**
     * Whether the mouse cursor is currently over the button.
     */
    public boolean isMouseOver()
    {
        return this.hovered;
    }

    public void drawButtonForegroundLayer(int mouseX, int mouseY) {}

    public void playPressSound(SoundHandler soundHandlerIn)
    {
        soundHandlerIn.playSound(PositionedSoundRecord.createPositionedSoundRecord(new ResourceLocation("gui.button.press"), 1.0F));
    }

    public int getButtonWidth()
    {
        return this.width;
    }

    public int getButtonHeight()
    {
        return this.height;
    }
}