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      1 package com.android.mail.bitmap;
      2 
      3 import android.content.res.Resources;
      4 import android.graphics.Canvas;
      5 import android.graphics.Paint;
      6 import android.graphics.Paint.Align;
      7 import android.graphics.Rect;
      8 import android.graphics.drawable.Drawable;
      9 
     10 import com.android.bitmap.BitmapCache;
     11 import com.android.bitmap.DecodeAggregator;
     12 import com.android.mail.R;
     13 import com.android.mail.browse.ConversationItemViewCoordinates;
     14 
     15 
     16 /**
     17  * A 2x1 grid of attachment drawables. Supports showing a small "+N" badge in the corner.
     18  */
     19 public class AttachmentGridDrawable extends CompositeDrawable<AttachmentDrawable>
     20         implements Parallaxable {
     21 
     22     public static final int MAX_VISIBLE_ATTACHMENT_COUNT = 2;
     23 
     24     private BitmapCache mCache;
     25     private DecodeAggregator mDecodeAggregator;
     26     private String mOverflowText;
     27     private ConversationItemViewCoordinates mCoordinates;
     28     private float mParallaxFraction = 0.5f;
     29 
     30     private final Resources mResources;
     31     private final Drawable mPlaceholder;
     32     private final Drawable mProgress;
     33     private final int mOverflowTextColor;
     34     private final int mOverflowBadgeColor;
     35     private final Paint mPaint = new Paint();
     36     private final Rect mRect = new Rect();
     37 
     38     public AttachmentGridDrawable(Resources res, Drawable placeholder, Drawable progress) {
     39         super(MAX_VISIBLE_ATTACHMENT_COUNT);
     40         mResources = res;
     41         mPlaceholder = placeholder;
     42         mProgress = progress;
     43         mOverflowTextColor = res.getColor(R.color.ap_overflow_text_color);
     44         mOverflowBadgeColor = res.getColor(R.color.ap_overflow_badge_color);
     45 
     46         mPaint.setAntiAlias(true);
     47     }
     48 
     49     @Override
     50     protected AttachmentDrawable createDivisionDrawable() {
     51         final AttachmentDrawable result = new AttachmentDrawable(mResources, mCache,
     52                 mDecodeAggregator, mCoordinates, mPlaceholder, mProgress);
     53         return result;
     54     }
     55 
     56     public void setBitmapCache(BitmapCache cache) {
     57         mCache = cache;
     58     }
     59 
     60     public void setDecodeAggregator(final DecodeAggregator decodeAggregator) {
     61         this.mDecodeAggregator = decodeAggregator;
     62     }
     63 
     64     public void setOverflowText(String text) {
     65         mOverflowText = text;
     66         layoutOverflowBadge();
     67     }
     68 
     69     public void setCoordinates(ConversationItemViewCoordinates coordinates) {
     70         mCoordinates = coordinates;
     71         layoutOverflowBadge();
     72     }
     73 
     74     private void layoutOverflowBadge() {
     75         if (mCoordinates == null || mOverflowText == null) {
     76             return;
     77         }
     78         mPaint.setTextSize(mCoordinates.overflowFontSize);
     79         mPaint.setTypeface(mCoordinates.overflowTypeface);
     80         mPaint.setTextAlign(Align.CENTER);
     81         mPaint.getTextBounds(mOverflowText, 0, mOverflowText.length(), mRect);
     82     }
     83 
     84     @Override
     85     public void draw(Canvas canvas) {
     86         for (int i = 0; i < mCount; i++) {
     87             mDrawables.get(i).setParallaxFraction(mParallaxFraction);
     88         }
     89 
     90         super.draw(canvas);
     91 
     92         // Overflow badge and count
     93         if (mOverflowText != null && mCoordinates != null) {
     94             final float radius = mCoordinates.overflowDiameter / 2f;
     95             // transform item-level coordinates into local drawable coordinate space
     96             final float x = mCoordinates.overflowXEnd - mCoordinates.attachmentPreviewsX - radius;
     97             final float y = mCoordinates.overflowYEnd - mCoordinates.attachmentPreviewsY - radius;
     98 
     99             mPaint.setColor(mOverflowBadgeColor);
    100             canvas.drawCircle(x, y, radius, mPaint);
    101 
    102             mPaint.setColor(mOverflowTextColor);
    103             canvas.drawText(mOverflowText, x, y + (mRect.height() / 2f), mPaint);
    104         }
    105     }
    106 
    107     @Override
    108     public void setParallaxFraction(float fraction) {
    109         mParallaxFraction = fraction;
    110     }
    111 
    112 }
    113