package com.owncloud.android.ui.preview;

import android.annotation.SuppressLint;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.os.Build;
import android.util.AttributeSet;
import android.view.View;
import android.widget.ImageView;

import com.owncloud.android.lib.common.utils.Log_OC;

public class ImageViewCustom extends ImageView {
    
    private static final boolean IS_ICS_OR_HIGHER = Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH;
    
    private Bitmap mBitmap;

    
    public ImageViewCustom(Context context) {
        super(context);
    }
    
    public ImageViewCustom(Context context, AttributeSet attrs) {
        super(context, attrs);
    }
    
    public ImageViewCustom(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }

    @SuppressLint("NewApi")
	@Override
    protected void onDraw(Canvas canvas) {

        if(IS_ICS_OR_HIGHER && checkIfMaximumBitmapExceed(canvas)) {
            // Set layer type to software one for avoiding exceed
            // and problems in visualization
            setLayerType(View.LAYER_TYPE_SOFTWARE, null);
        }

        super.onDraw(canvas);
    }

    /**
     * Checks if current bitmaps exceed the maximum OpenGL texture size limit
     * @param bitmap
     * @return boolean
     */
    @SuppressLint("NewApi")
	private boolean checkIfMaximumBitmapExceed(Canvas canvas) {
        Log_OC.d("OC", "Canvas maximum: " + canvas.getMaximumBitmapWidth() + " - " + canvas.getMaximumBitmapHeight());
        if (mBitmap!= null && (mBitmap.getWidth() > canvas.getMaximumBitmapWidth() 
                || mBitmap.getHeight() > canvas.getMaximumBitmapHeight())) {
            return true;
        }
        
        return false;
    }
    
    /**
     * Set current bitmap
     * @param bitmap
     */
    public void setBitmap (Bitmap bitmap) {
        mBitmap = bitmap;
    }

}