/* * Copyright 2010, 2011, 2012 mapsforge.org * * This program is free software: you can redistribute it and/or modify it under the * terms of the GNU Lesser General Public License as published by the Free Software * Foundation, either version 3 of the License, or (at your option) any later version. * * This program 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 Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License along with * this program. If not, see <http://www.gnu.org/licenses/>. */ package org.mapsforge.applications.android.advancedmapviewer.preferences; import org.mapsforge.applications.android.advancedmapviewer.AdvancedMapViewer; import org.mapsforge.applications.android.advancedmapviewer.R; import org.mapsforge.core.model.Tile; import android.content.Context; import android.util.AttributeSet; /** * Preferences class for adjusting the cache size. */ public class CacheSizePreference extends SeekBarPreference { private static final double ONE_MEGABYTE = 1000000d; private static final int TILE_SIZE_IN_BYTES = Tile.TILE_SIZE * Tile.TILE_SIZE * 2; /** * Construct a new cache size preference seek bar. * * @param context * the context activity. * @param attrs * A set of attributes (currently ignored). */ public CacheSizePreference(Context context, AttributeSet attrs) { super(context, attrs); // define the text message this.messageText = getContext().getString(R.string.preferences_cache_size_desc); // define the current and maximum value of the seek bar this.seekBarCurrentValue = this.preferencesDefault.getInt(this.getKey(), AdvancedMapViewer.FILE_SYSTEM_CACHE_SIZE_DEFAULT); this.max = AdvancedMapViewer.FILE_SYSTEM_CACHE_SIZE_MAX; } @Override String getCurrentValueText(int progress) { String format = getContext().getString(R.string.preferences_cache_size_value); Double value = Double.valueOf(TILE_SIZE_IN_BYTES * progress / ONE_MEGABYTE); return String.format(format, value); } }