LinearGradientFillTextureSourceDecorator.java :  » Graphics-3D-2D-OpenGL » andengine » org » anddev » andengine » opengl » texture » source » decorator » Android Open Source

package org.anddev.andengine.opengl.texture.source.decorator;

import org.anddev.andengine.opengl.texture.source.ITextureSource;
import org.anddev.andengine.opengl.texture.source.decorator.shape.ITextureSourceDecoratorShape;

import android.graphics.LinearGradient;
import android.graphics.Paint.Style;
import android.graphics.Shader.TileMode;

/**
 * @author Nicolas Gramlich
 * @since 19:21:24 - 05.11.2010
 */
public class LinearGradientFillTextureSourceDecorator extends BaseShapeTextureSourceDecorator {
  // ===========================================================
  // Constants
  // ===========================================================

  // ===========================================================
  // Fields
  // ===========================================================

  protected final LinearGradientDirection mLinearGradientDirection;
  protected final int mFromColor;
  protected final int mToColor;

  // ===========================================================
  // Constructors
  // ===========================================================

  public LinearGradientFillTextureSourceDecorator(final ITextureSource pTextureSource, final ITextureSourceDecoratorShape pTextureSourceDecoratorShape, final int pFromColor, final int pToColor, final LinearGradientDirection pLinearGradientDirection) {
    this(pTextureSource, pTextureSourceDecoratorShape, pFromColor, pToColor, pLinearGradientDirection, null);
  }

  public LinearGradientFillTextureSourceDecorator(final ITextureSource pTextureSource, final ITextureSourceDecoratorShape pTextureSourceDecoratorShape, final int pFromColor, final int pToColor, final LinearGradientDirection pLinearGradientDirection, final TextureSourceDecoratorOptions pTextureSourceDecoratorOptions) {
    super(pTextureSource, pTextureSourceDecoratorShape, pTextureSourceDecoratorOptions);
    this.mFromColor = pFromColor;
    this.mToColor = pToColor;
    this.mLinearGradientDirection = pLinearGradientDirection;

    this.mPaint.setStyle(Style.FILL);

    final int width = pTextureSource.getWidth();
    final int height = pTextureSource.getHeight();

    final float fromX = pLinearGradientDirection.getFromX() * width;
    final float fromY = pLinearGradientDirection.getFromY() * height;
    final float toX = pLinearGradientDirection.getToX() * width;
    final float toY = pLinearGradientDirection.getToY() * height;

    this.mPaint.setShader(new LinearGradient(fromX, fromY, toX, toY, pFromColor, pToColor, TileMode.CLAMP));
  }

  @Override
  public LinearGradientFillTextureSourceDecorator clone() {
    return new LinearGradientFillTextureSourceDecorator(this.mTextureSource, this.mTextureSourceDecoratorShape, this.mFromColor, this.mToColor, this.mLinearGradientDirection, this.mTextureSourceDecoratorOptions);
  }

  // ===========================================================
  // Getter & Setter
  // ===========================================================

  // ===========================================================
  // Methods for/from SuperClass/Interfaces
  // ===========================================================

  // ===========================================================
  // Methods
  // ===========================================================

  // ===========================================================
  // Inner and Anonymous Classes
  // ===========================================================

  public static enum LinearGradientDirection {
    // ===========================================================
    // Elements
    // ===========================================================

    LEFT_TO_RIGHT(0, 0, 1, 0),
    RIGHT_TO_LEFT(1, 0, 0, 0),
    BOTTOM_TO_TOP(0, 0, 0, 1),
    TOP_TO_BOTTOM(0, 1, 0, 0),
    TOPLEFT_TO_BOTTOMRIGHT(0, 0, 1, 1),
    BOTTOMRIGHT_TO_TOPLEFT(1, 1, 0, 0),
    TOPRIGHT_TO_BOTTOMLEFT(1, 0, 0, 1),
    BOTTOMLEFT_TO_TOPRIGHT(0, 1, 1, 0);

    // ===========================================================
    // Constants
    // ===========================================================

    // ===========================================================
    // Fields
    // ===========================================================

    private final int mFromX;
    private final int mFromY;
    private final int mToX;
    private final int mToY;

    // ===========================================================
    // Constructors
    // ===========================================================

    private LinearGradientDirection(final int pFromX, final int pFromY, final int pToX, final int pToY) {
      this.mFromX = pFromX;
      this.mFromY = pFromY;
      this.mToX = pToX;
      this.mToY = pToY;
    }

    // ===========================================================
    // Getter & Setter
    // ===========================================================

    final int getFromX() {
      return this.mFromX;
    }

    final int getFromY() {
      return this.mFromY;
    }

    final int getToX() {
      return this.mToX;
    }

    final int getToY() {
      return this.mToY;
    }

    // ===========================================================
    // Methods from SuperClass/Interfaces
    // ===========================================================

    // ===========================================================
    // Methods
    // ===========================================================

    // ===========================================================
    // Inner and Anonymous Classes
    // ===========================================================
  }
}