/*
* Copyright (c) 2012, Eric Coolman, 1815750 Ontario Inc. and/or its
* affiliates. All rights reserved.
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. 1815750 Ontario Inc designates
* this * particular file as subject to the "Classpath" exception as provided
* in the LICENSE file that accompanied this code.
*
* This code 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
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact 1815750 Ontario Inc. through http://www.coolman.ca/ if you
* need additional information or have any questions.
*/
package ca.coolman.ui.util;
import com.codename1.ui.Display;
/**
* Determine resolution class of device based on display characteristics, and
* select best size for various components based on device resolution class.
*
* @author Eric Coolman
*
*/
public class Resolution {
public final static int VERY_LOW = 0;
public final static int LOW = 1;
public final static int MEDIUM = 2;
public final static int HIGH = 3;
public final static int VERY_HIGH = 4;
public final static int HD = 5;
private final static long LIMIT_VERY_LOW = 43340L;
private final static long LIMIT_LOW = 101000L;
private final static long LIMIT_MEDIUM = 172800L;
private final static long LIMIT_HIGH = 409920L;
private final static long LIMIT_VERY_HIGH = 1036800L;
private final static long LIMIT_HD = 2073600L;
private final static int iconSize[] = { 16, 24, 32, 48, 64, 64 };
private static Resolution _instance;
private int deviceResolution = -1;
public static Resolution getInstance() {
if (_instance == null) {
_instance = new Resolution();
}
return _instance;
}
public int getDeviceResolution() {
if (deviceResolution == -1) {
Display d = Display.getInstance();
long actual = d.getDisplayHeight() * d.getDisplayWidth();
if (actual <= LIMIT_VERY_LOW) {
deviceResolution = VERY_LOW;
} else if (actual <= LIMIT_LOW) {
deviceResolution = LOW;
} else if (actual <= LIMIT_MEDIUM) {
deviceResolution = MEDIUM;
} else if (actual <= LIMIT_HIGH) {
deviceResolution = HIGH;
} else if (actual <= LIMIT_VERY_HIGH) {
deviceResolution = VERY_HIGH;
} else if (actual <= LIMIT_HD) {
deviceResolution = HD;
} else {
deviceResolution = HD;
}
}
return deviceResolution;
}
public int getPreferredIconSize() {
return iconSize[getDeviceResolution()];
}
}