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      1 package com.android.wallpaperpicker.tileinfo;
      2 
      3 import android.content.Context;
      4 import android.content.res.Resources;
      5 import android.graphics.Bitmap;
      6 import android.graphics.Matrix;
      7 import android.graphics.Point;
      8 import android.graphics.RectF;
      9 import android.view.LayoutInflater;
     10 import android.view.View;
     11 import android.view.ViewGroup;
     12 
     13 import com.android.gallery3d.common.Utils;
     14 import com.android.wallpaperpicker.R;
     15 import com.android.wallpaperpicker.WallpaperPickerActivity;
     16 import com.android.wallpaperpicker.common.InputStreamProvider;
     17 
     18 public abstract class WallpaperTileInfo {
     19 
     20     protected View mView;
     21 
     22     public void onClick(WallpaperPickerActivity a) {}
     23 
     24     public void onSave(WallpaperPickerActivity a) {}
     25 
     26     public void onDelete(WallpaperPickerActivity a) {}
     27 
     28     public boolean isSelectable() { return false; }
     29 
     30     public boolean isNamelessWallpaper() { return false; }
     31 
     32     public void onIndexUpdated(CharSequence label) {
     33         if (isNamelessWallpaper()) {
     34             mView.setContentDescription(label);
     35         }
     36     }
     37 
     38     public abstract View createView(Context context, LayoutInflater inflator, ViewGroup parent);
     39 
     40     protected static Point getDefaultThumbSize(Resources res) {
     41         return new Point(res.getDimensionPixelSize(R.dimen.wallpaperThumbnailWidth),
     42                 res.getDimensionPixelSize(R.dimen.wallpaperThumbnailHeight));
     43 
     44     }
     45 
     46     protected static Bitmap createThumbnail(InputStreamProvider streamProvider, Context context,
     47             int rotation, boolean leftAligned) {
     48         Point size = getDefaultThumbSize(context.getResources());
     49         int width = size.x;
     50         int height = size.y;
     51         Point bounds = streamProvider.getImageBounds();
     52         if (bounds == null) {
     53             return null;
     54         }
     55 
     56         Matrix rotateMatrix = new Matrix();
     57         rotateMatrix.setRotate(rotation);
     58         float[] rotatedBounds = new float[] { bounds.x, bounds.y };
     59         rotateMatrix.mapPoints(rotatedBounds);
     60         rotatedBounds[0] = Math.abs(rotatedBounds[0]);
     61         rotatedBounds[1] = Math.abs(rotatedBounds[1]);
     62 
     63         RectF cropRect = Utils.getMaxCropRect(
     64                 (int) rotatedBounds[0], (int) rotatedBounds[1], width, height, leftAligned);
     65         return streamProvider.readCroppedBitmap(cropRect, width, height, rotation);
     66     }
     67 }