Android Open Source - AndroidImageSlider Tablet Transformer

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Back to project page AndroidImageSlider.

License

The source code is released under:

MIT License

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Java Source Code

package com.daimajia.slider.library.Transformers;
//w w w.  j a v a 2 s  . c om
import android.graphics.Camera;
import android.graphics.Matrix;
import android.view.View;

import com.nineoldandroids.view.ViewHelper;

public class TabletTransformer extends BaseTransformer {

  private static final Matrix OFFSET_MATRIX = new Matrix();
  private static final Camera OFFSET_CAMERA = new Camera();
  private static final float[] OFFSET_TEMP_FLOAT = new float[2];

  @Override
  protected void onTransform(View view, float position) {
    final float rotation = (position < 0 ? 30f : -30f) * Math.abs(position);

    ViewHelper.setTranslationX(view,getOffsetXForRotation(rotation, view.getWidth(), view.getHeight()));
        ViewHelper.setPivotX(view,view.getWidth() * 0.5f);
        ViewHelper.setPivotY(view,0);
        ViewHelper.setRotationY(view,rotation);
  }

  protected static final float getOffsetXForRotation(float degrees, int width, int height) {
    OFFSET_MATRIX.reset();
    OFFSET_CAMERA.save();
    OFFSET_CAMERA.rotateY(Math.abs(degrees));
    OFFSET_CAMERA.getMatrix(OFFSET_MATRIX);
    OFFSET_CAMERA.restore();

    OFFSET_MATRIX.preTranslate(-width * 0.5f, -height * 0.5f);
    OFFSET_MATRIX.postTranslate(width * 0.5f, height * 0.5f);
    OFFSET_TEMP_FLOAT[0] = width;
    OFFSET_TEMP_FLOAT[1] = height;
    OFFSET_MATRIX.mapPoints(OFFSET_TEMP_FLOAT);
    return (width - OFFSET_TEMP_FLOAT[0]) * (degrees > 0.0f ? 1.0f : -1.0f);
  }

}

Java Source Code List