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108 lines
3.7 KiB
Java
108 lines
3.7 KiB
Java
/* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla Android code.
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*
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* The Initial Developer of the Original Code is Mozilla Foundation.
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* Portions created by the Initial Developer are Copyright (C) 2009-2010
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Patrick Walton <pcwalton@mozilla.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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package org.mozilla.gecko.gfx;
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import org.mozilla.gecko.gfx.FloatSize;
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import org.json.JSONException;
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import org.json.JSONObject;
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import java.lang.Math;
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public class IntSize {
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public final int width, height;
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public IntSize(IntSize size) { width = size.width; height = size.height; }
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public IntSize(int inWidth, int inHeight) { width = inWidth; height = inHeight; }
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public IntSize(FloatSize size) {
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width = Math.round(size.width);
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height = Math.round(size.height);
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}
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public IntSize(JSONObject json) {
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try {
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width = json.getInt("width");
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height = json.getInt("height");
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} catch (JSONException e) {
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throw new RuntimeException(e);
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}
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}
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public int getArea() {
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return width * height;
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}
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public boolean equals(IntSize size) {
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return ((size.width == width) && (size.height == height));
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}
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public boolean isPositive() {
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return (width > 0 && height > 0);
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}
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@Override
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public String toString() { return "(" + width + "," + height + ")"; }
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public IntSize scale(float factor) {
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return new IntSize(Math.round(width * factor),
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Math.round(height * factor));
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}
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/* Returns the power of two that is greater than or equal to value */
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public static int nextPowerOfTwo(int value) {
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// code taken from http://acius2.blogspot.com/2007/11/calculating-next-power-of-2.html
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if (0 == value--) {
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return 1;
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}
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value = (value >> 1) | value;
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value = (value >> 2) | value;
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value = (value >> 4) | value;
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value = (value >> 8) | value;
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value = (value >> 16) | value;
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return value + 1;
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}
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public static int nextPowerOfTwo(float value) {
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return nextPowerOfTwo((int) value);
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}
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public IntSize nextPowerOfTwo() {
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return new IntSize(nextPowerOfTwo(width), nextPowerOfTwo(height));
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}
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}
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