michael@0: /* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
michael@0:  * This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: package org.mozilla.gecko.gfx;
michael@0: 
michael@0: import org.mozilla.gecko.util.FloatUtils;
michael@0: 
michael@0: import org.json.JSONException;
michael@0: import org.json.JSONObject;
michael@0: 
michael@0: public class FloatSize {
michael@0:     public final float width, height;
michael@0: 
michael@0:     public FloatSize(FloatSize size) { width = size.width; height = size.height; }
michael@0:     public FloatSize(IntSize size) { width = size.width; height = size.height; }
michael@0:     public FloatSize(float aWidth, float aHeight) { width = aWidth; height = aHeight; }
michael@0: 
michael@0:     public FloatSize(JSONObject json) {
michael@0:         try {
michael@0:             width = (float)json.getDouble("width");
michael@0:             height = (float)json.getDouble("height");
michael@0:         } catch (JSONException e) {
michael@0:             throw new RuntimeException(e);
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     @Override
michael@0:     public String toString() { return "(" + width + "," + height + ")"; }
michael@0: 
michael@0:     public boolean isPositive() {
michael@0:         return (width > 0 && height > 0);
michael@0:     }
michael@0: 
michael@0:     public boolean fuzzyEquals(FloatSize size) {
michael@0:         return (FloatUtils.fuzzyEquals(size.width, width) &&
michael@0:                 FloatUtils.fuzzyEquals(size.height, height));
michael@0:     }
michael@0: 
michael@0:     public FloatSize scale(float factor) {
michael@0:         return new FloatSize(width * factor, height * factor);
michael@0:     }
michael@0: 
michael@0:     /*
michael@0:      * Returns the size that represents a linear transition between this size and `to` at time `t`,
michael@0:      * which is on the scale [0, 1).
michael@0:      */
michael@0:     public FloatSize interpolate(FloatSize to, float t) {
michael@0:         return new FloatSize(FloatUtils.interpolate(width, to.width, t),
michael@0:                              FloatUtils.interpolate(height, to.height, t));
michael@0:     }
michael@0: }
michael@0: