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-// Copyright 2007 The Closure Library Authors. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS-IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-/**
- * @fileoverview A utility class for representing two-dimensional sizes.
- * @author brenneman@google.com (Shawn Brenneman)
- */
-
-
-goog.provide('goog.math.Size');
-
-
-
-/**
- * Class for representing sizes consisting of a width and height. Undefined
- * width and height support is deprecated and results in compiler warning.
- * @param {number} width Width.
- * @param {number} height Height.
- * @struct
- * @constructor
- */
-goog.math.Size = function(width, height) {
- /**
- * Width
- * @type {number}
- */
- this.width = width;
-
- /**
- * Height
- * @type {number}
- */
- this.height = height;
-};
-
-
-/**
- * Compares sizes for equality.
- * @param {goog.math.Size} a A Size.
- * @param {goog.math.Size} b A Size.
- * @return {boolean} True iff the sizes have equal widths and equal
- * heights, or if both are null.
- */
-goog.math.Size.equals = function(a, b) {
- if (a == b) {
- return true;
- }
- if (!a || !b) {
- return false;
- }
- return a.width == b.width && a.height == b.height;
-};
-
-
-/**
- * @return {!goog.math.Size} A new copy of the Size.
- */
-goog.math.Size.prototype.clone = function() {
- return new goog.math.Size(this.width, this.height);
-};
-
-
-if (goog.DEBUG) {
- /**
- * Returns a nice string representing size.
- * @return {string} In the form (50 x 73).
- * @override
- */
- goog.math.Size.prototype.toString = function() {
- return '(' + this.width + ' x ' + this.height + ')';
- };
-}
-
-
-/**
- * @return {number} The longer of the two dimensions in the size.
- */
-goog.math.Size.prototype.getLongest = function() {
- return Math.max(this.width, this.height);
-};
-
-
-/**
- * @return {number} The shorter of the two dimensions in the size.
- */
-goog.math.Size.prototype.getShortest = function() {
- return Math.min(this.width, this.height);
-};
-
-
-/**
- * @return {number} The area of the size (width * height).
- */
-goog.math.Size.prototype.area = function() {
- return this.width * this.height;
-};
-
-
-/**
- * @return {number} The perimeter of the size (width + height) * 2.
- */
-goog.math.Size.prototype.perimeter = function() {
- return (this.width + this.height) * 2;
-};
-
-
-/**
- * @return {number} The ratio of the size's width to its height.
- */
-goog.math.Size.prototype.aspectRatio = function() {
- return this.width / this.height;
-};
-
-
-/**
- * @return {boolean} True if the size has zero area, false if both dimensions
- * are non-zero numbers.
- */
-goog.math.Size.prototype.isEmpty = function() {
- return !this.area();
-};
-
-
-/**
- * Clamps the width and height parameters upward to integer values.
- * @return {!goog.math.Size} This size with ceil'd components.
- */
-goog.math.Size.prototype.ceil = function() {
- this.width = Math.ceil(this.width);
- this.height = Math.ceil(this.height);
- return this;
-};
-
-
-/**
- * @param {!goog.math.Size} target The target size.
- * @return {boolean} True if this Size is the same size or smaller than the
- * target size in both dimensions.
- */
-goog.math.Size.prototype.fitsInside = function(target) {
- return this.width <= target.width && this.height <= target.height;
-};
-
-
-/**
- * Clamps the width and height parameters downward to integer values.
- * @return {!goog.math.Size} This size with floored components.
- */
-goog.math.Size.prototype.floor = function() {
- this.width = Math.floor(this.width);
- this.height = Math.floor(this.height);
- return this;
-};
-
-
-/**
- * Rounds the width and height parameters to integer values.
- * @return {!goog.math.Size} This size with rounded components.
- */
-goog.math.Size.prototype.round = function() {
- this.width = Math.round(this.width);
- this.height = Math.round(this.height);
- return this;
-};
-
-
-/**
- * Scales this size by the given scale factors. The width and height are scaled
- * by {@code sx} and {@code opt_sy} respectively. If {@code opt_sy} is not
- * given, then {@code sx} is used for both the width and height.
- * @param {number} sx The scale factor to use for the width.
- * @param {number=} opt_sy The scale factor to use for the height.
- * @return {!goog.math.Size} This Size object after scaling.
- */
-goog.math.Size.prototype.scale = function(sx, opt_sy) {
- var sy = goog.isNumber(opt_sy) ? opt_sy : sx;
- this.width *= sx;
- this.height *= sy;
- return this;
-};
-
-
-/**
- * Uniformly scales the size to perfectly cover the dimensions of a given size.
- * If the size is already larger than the target, it will be scaled down to the
- * minimum size at which it still covers the entire target. The original aspect
- * ratio will be preserved.
- *
- * This function assumes that both Sizes contain strictly positive dimensions.
- * @param {!goog.math.Size} target The target size.
- * @return {!goog.math.Size} This Size object, after optional scaling.
- */
-goog.math.Size.prototype.scaleToCover = function(target) {
- var s = this.aspectRatio() <= target.aspectRatio() ?
- target.width / this.width :
- target.height / this.height;
-
- return this.scale(s);
-};
-
-
-/**
- * Uniformly scales the size to fit inside the dimensions of a given size. The
- * original aspect ratio will be preserved.
- *
- * This function assumes that both Sizes contain strictly positive dimensions.
- * @param {!goog.math.Size} target The target size.
- * @return {!goog.math.Size} This Size object, after optional scaling.
- */
-goog.math.Size.prototype.scaleToFit = function(target) {
- var s = this.aspectRatio() > target.aspectRatio() ?
- target.width / this.width :
- target.height / this.height;
-
- return this.scale(s);
-};