Images.java

/*
  * This file is part of WhereYouGo.
  *
  * WhereYouGo is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation, either version 3 of the License, or
  * (at your option) any later version.
  *
  * WhereYouGo is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with WhereYouGo.  If not, see <http://www.gnu.org/licenses/>.
  *
  * Copyright (C) 2012 Menion <whereyougo@asamm.cz>
  */ 

package menion.android.whereyougo.utils;

import menion.android.whereyougo.R;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;

public class Images {
	
	private static final String TAG = "Images";

	/** bigger icon size for titles, logos, etc... */
	public static final int SIZE_HUGE = (int) Utils.getDpPixels(48);
	/** bigger icon size for titles, logos, etc... */
	public static final int SIZE_BIG = (int) Utils.getDpPixels(32);
	/** smaller icon size mainly for map items */
	public static final int SIZE_MEDIUM = (int) Utils.getDpPixels(24);
	/** smallest icon size */
	public static final int SIZE_SMALL = (int) Utils.getDpPixels(16);

	public static final Bitmap IMAGE_EMPTY_B = getImageB(R.drawable.var_empty);
	
	public static Drawable getImageD(int id) {
		try {
			Drawable draw = A.getApp().getResources().getDrawable(id);
			draw.setBounds(0, 0, draw.getIntrinsicWidth(), draw.getIntrinsicHeight());
			return draw;
		} catch (Exception e) {
			// some exceptions on market (crash errors)
			return null;
		}
	}
	
	public static Drawable getImageD(int id, int size) {
		if (A.getApp() == null)
			return null;
		
		Drawable draw = A.getApp().getResources().getDrawable(id);
		return getSizeOptimizedIcon(draw, size);
	}

	public static Drawable getImageD(Bitmap bitmap) {
		Drawable draw = new BitmapDrawable(bitmap);
		draw.setBounds(0, 0, draw.getIntrinsicWidth(), draw.getIntrinsicHeight());
		return draw;
	}

	public static Bitmap getImageB(int id) {
		try {
			if (id <= 0)
				return IMAGE_EMPTY_B;
			return BitmapFactory.decodeResource(A.getApp().getResources(), id);
		} catch (Exception e) {
			Logger.w(TAG, "getImageB(" + id + "), e:" + e.toString());
			return IMAGE_EMPTY_B;
		}
	}
	
	public static Bitmap getImageB(int id, int width) {
		Bitmap bitmap = getImageB(id);
		return resizeBitmap(bitmap, width);
	}

	public static Drawable getSizeOptimizedIcon(Drawable draw, int newSize) {
		if (draw == null)
			return getImageD(R.drawable.var_empty);
		draw.setBounds(0, 0, newSize, newSize);
		draw.invalidateSelf();
		return draw;
	}

	public static Bitmap resizeBitmap(Bitmap draw, int newWidth) {
		if (draw == null)
			return null;
		
		return resizeBitmap(draw, newWidth, (int) (newWidth * draw.getHeight() / draw.getWidth()));
	}

	public static Bitmap resizeBitmap(Bitmap draw, int newWidth, int newHeight) {
		if (draw == null || newWidth <= 0 || draw.getWidth() == newWidth)
			return draw;
		
		return Bitmap.createScaledBitmap(draw, newWidth, newHeight, true);
	}
}