Android Open Source - Android-Bootstrap Bootstrap Thumbnail

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Back to project page Android-Bootstrap.

License

The source code is released under:

MIT License

Java Source Code

package com.beardedhen.androidbootstrap;
//from ww  w .  j a v  a 2  s . c  om
import android.content.Context;
import android.content.res.TypedArray;
import android.util.AttributeSet;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.FrameLayout;
import android.widget.LinearLayout;
import android.widget.TextView;

public class BootstrapThumbnail extends FrameLayout
{
  private static final int DEFAULT_WIDTH = 150; //width of thumbnail when no width is given
  private static final int DEFAULT_HEIGHT = 150;//height of thumbnail when no height is given
  private static final int DEFAULT_MAX_PADDING = 8; //8dp is max padding size when padding isn't specified by user
  private static final int DEFAULT_MIN_PADDING = 4; //4dp

    private LinearLayout placeholder;
    private boolean roundedCorners = true;

    private enum ThumbnailTypes
    {
        ROUNDED(R.drawable.bthumbnail_container_rounded, R.drawable.bthumbnail_placeholder_default),
        SQUARE(R.drawable.bthumbnail_container_square, R.drawable.bthumbnail_placeholder_default);

        private int containerDrawable;
        private int placeholderDrawable;

        ThumbnailTypes(int containerDrawable, int placeholderDrawable) {
            this.containerDrawable = containerDrawable;
            this.placeholderDrawable = placeholderDrawable;
        }

        public static ThumbnailTypes getTypeFromBoolean(boolean roundedCorners) {
            return (roundedCorners) ? ROUNDED : SQUARE;
        }
    }

    public BootstrapThumbnail(Context context)
    {
        super(context);
        initialise(null);
    }

    public BootstrapThumbnail(Context context, AttributeSet attrs)
    {
        super(context, attrs);
        initialise(attrs);
    }

  public BootstrapThumbnail(Context context, AttributeSet attrs, int defStyle) 
  {
    super(context, attrs, defStyle);
    initialise(attrs);
  }
  
  private void initialise( AttributeSet attrs )
  {
    LayoutInflater inflater = LayoutInflater.from(getContext());

    TypedArray a = getContext().obtainStyledAttributes(attrs,
          R.styleable.BootstrapThumbnail);
    
    //defaults
    ThumbnailTypes type;
    String text = "";
    int imageDrawable = 0;
    float scale = getResources().getDisplayMetrics().density; //for padding
    int width = DEFAULT_WIDTH;
    int height = DEFAULT_HEIGHT;
    int padding = 0;
    int paddingDP = 0;

        try {
            //attribute values
            width = (int) a.getDimension(R.styleable.BootstrapThumbnail_bt_width, 0);
            height = (int) a.getDimension(R.styleable.BootstrapThumbnail_bt_height, 0);

            if(a.getString(R.styleable.BootstrapThumbnail_bt_inside_padding) != null) {
                paddingDP = (int) a.getDimension(R.styleable.BootstrapThumbnail_bt_inside_padding, 0);
            }
            else{
                padding = (int) (((Math.sqrt(width * height)) / 100) * 2);
                if (padding > DEFAULT_MAX_PADDING) {
                    padding = DEFAULT_MAX_PADDING;
                }
                if (padding < DEFAULT_MIN_PADDING) {
                    padding = DEFAULT_MIN_PADDING;
                }

                paddingDP = (int) (padding * scale + 0.5f); //container padding in DP
            }

            roundedCorners = a.getBoolean(R.styleable.BootstrapThumbnail_bt_roundedCorners, false) ;
            imageDrawable = a.getResourceId(R.styleable.BootstrapThumbnail_bt_image, 0);
        }
        finally {
            a.recycle();
        }
    
    text = (int)(width/scale) + "x" + (int)(height/scale);
    View v = inflater.inflate(R.layout.bootstrap_thumbnail, this, false);
  
    //get layout items
        ViewGroup container = (ViewGroup) v.findViewById(R.id.container);
    placeholder = (LinearLayout) v.findViewById(R.id.placeholder);
        TextView dimensionsLabel = (TextView) v.findViewById(R.id.dimensionsLabel);

    //get the correct background type
    type = ThumbnailTypes.getTypeFromBoolean(roundedCorners);

    //apply the background type
    container.setBackgroundResource(type.containerDrawable);
    
    //if no image is provided by user
    if(imageDrawable == 0) {
      //set default grey placeholder background
      placeholder.setBackgroundResource(type.placeholderDrawable);
      
      //set the text 
          if(text.length() > 0) {
            dimensionsLabel.setText(text);
            dimensionsLabel.setVisibility(View.VISIBLE);          
          }
    }
    else{    
      //set background to user's provided image
      placeholder.setBackgroundResource(imageDrawable);
      
      //remove textview dimensions
      dimensionsLabel.setVisibility(View.GONE);
    }
      
    //placeholder padding
    int paddingP = (int) (((Math.sqrt(width * height)) / 100) * 4);

    //convert to DP      
      int paddingDPP = (int) (paddingP * scale + 0.5f);//placeholder padding in DP

    container.setPadding(paddingDP, paddingDP, paddingDP, paddingDP);
    placeholder.setPadding(paddingDPP, paddingDPP, paddingDPP, paddingDPP);
    placeholder.setLayoutParams(new LinearLayout.LayoutParams(width,height));
    
    //set the font awesome icon typeface
    dimensionsLabel.setTypeface(FontAwesome.getFont(getContext()));

        this.setClickable(true);
                
    addView(v);
  }

    public void setImage(int drawable)
    {
        this.placeholder.setBackgroundResource(drawable);
        invalidate();
        requestLayout();
    }

}

Java Source Code List

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