mobile/android/base/gfx/RectUtils.java@6474c204b198 (annotated)
mobile/android/base/gfx/RectUtils.java
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | /* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*- |
| michael@0 | 2 | * This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 3 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 4 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 5 | |
| michael@0 | 6 | package org.mozilla.gecko.gfx; |
| michael@0 | 7 | |
| michael@0 | 8 | import org.mozilla.gecko.util.FloatUtils; |
| michael@0 | 9 | |
| michael@0 | 10 | import org.json.JSONException; |
| michael@0 | 11 | import org.json.JSONObject; |
| michael@0 | 12 | |
| michael@0 | 13 | import android.graphics.Point; |
| michael@0 | 14 | import android.graphics.PointF; |
| michael@0 | 15 | import android.graphics.Rect; |
| michael@0 | 16 | import android.graphics.RectF; |
| michael@0 | 17 | |
| michael@0 | 18 | public final class RectUtils { |
| michael@0 | 19 | private RectUtils() {} |
| michael@0 | 20 | |
| michael@0 | 21 | public static Rect create(JSONObject json) { |
| michael@0 | 22 | try { |
| michael@0 | 23 | int x = json.getInt("x"); |
| michael@0 | 24 | int y = json.getInt("y"); |
| michael@0 | 25 | int width = json.getInt("width"); |
| michael@0 | 26 | int height = json.getInt("height"); |
| michael@0 | 27 | return new Rect(x, y, x + width, y + height); |
| michael@0 | 28 | } catch (JSONException e) { |
| michael@0 | 29 | throw new RuntimeException(e); |
| michael@0 | 30 | } |
| michael@0 | 31 | } |
| michael@0 | 32 | |
| michael@0 | 33 | public static String toJSON(RectF rect) { |
| michael@0 | 34 | StringBuilder sb = new StringBuilder(256); |
| michael@0 | 35 | sb.append("{ \"left\": ").append(rect.left) |
| michael@0 | 36 | .append(", \"top\": ").append(rect.top) |
| michael@0 | 37 | .append(", \"right\": ").append(rect.right) |
| michael@0 | 38 | .append(", \"bottom\": ").append(rect.bottom) |
| michael@0 | 39 | .append('}'); |
| michael@0 | 40 | return sb.toString(); |
| michael@0 | 41 | } |
| michael@0 | 42 | |
| michael@0 | 43 | public static RectF expand(RectF rect, float moreWidth, float moreHeight) { |
| michael@0 | 44 | float halfMoreWidth = moreWidth / 2; |
| michael@0 | 45 | float halfMoreHeight = moreHeight / 2; |
| michael@0 | 46 | return new RectF(rect.left - halfMoreWidth, |
| michael@0 | 47 | rect.top - halfMoreHeight, |
| michael@0 | 48 | rect.right + halfMoreWidth, |
| michael@0 | 49 | rect.bottom + halfMoreHeight); |
| michael@0 | 50 | } |
| michael@0 | 51 | |
| michael@0 | 52 | public static RectF contract(RectF rect, float lessWidth, float lessHeight) { |
| michael@0 | 53 | float halfLessWidth = lessWidth / 2.0f; |
| michael@0 | 54 | float halfLessHeight = lessHeight / 2.0f; |
| michael@0 | 55 | return new RectF(rect.left + halfLessWidth, |
| michael@0 | 56 | rect.top + halfLessHeight, |
| michael@0 | 57 | rect.right - halfLessWidth, |
| michael@0 | 58 | rect.bottom - halfLessHeight); |
| michael@0 | 59 | } |
| michael@0 | 60 | |
| michael@0 | 61 | public static RectF intersect(RectF one, RectF two) { |
| michael@0 | 62 | float left = Math.max(one.left, two.left); |
| michael@0 | 63 | float top = Math.max(one.top, two.top); |
| michael@0 | 64 | float right = Math.min(one.right, two.right); |
| michael@0 | 65 | float bottom = Math.min(one.bottom, two.bottom); |
| michael@0 | 66 | return new RectF(left, top, Math.max(right, left), Math.max(bottom, top)); |
| michael@0 | 67 | } |
| michael@0 | 68 | |
| michael@0 | 69 | public static RectF scale(RectF rect, float scale) { |
| michael@0 | 70 | float x = rect.left * scale; |
| michael@0 | 71 | float y = rect.top * scale; |
| michael@0 | 72 | return new RectF(x, y, |
| michael@0 | 73 | x + (rect.width() * scale), |
| michael@0 | 74 | y + (rect.height() * scale)); |
| michael@0 | 75 | } |
| michael@0 | 76 | |
| michael@0 | 77 | public static RectF scaleAndRound(RectF rect, float scale) { |
| michael@0 | 78 | float left = rect.left * scale; |
| michael@0 | 79 | float top = rect.top * scale; |
| michael@0 | 80 | return new RectF(Math.round(left), |
| michael@0 | 81 | Math.round(top), |
| michael@0 | 82 | Math.round(left + (rect.width() * scale)), |
| michael@0 | 83 | Math.round(top + (rect.height() * scale))); |
| michael@0 | 84 | } |
| michael@0 | 85 | |
| michael@0 | 86 | /** Returns the nearest integer rect of the given rect. */ |
| michael@0 | 87 | public static Rect round(RectF rect) { |
| michael@0 | 88 | Rect r = new Rect(); |
| michael@0 | 89 | round(rect, r); |
| michael@0 | 90 | return r; |
| michael@0 | 91 | } |
| michael@0 | 92 | |
| michael@0 | 93 | public static void round(RectF rect, Rect dest) { |
| michael@0 | 94 | dest.set(Math.round(rect.left), Math.round(rect.top), |
| michael@0 | 95 | Math.round(rect.right), Math.round(rect.bottom)); |
| michael@0 | 96 | } |
| michael@0 | 97 | |
| michael@0 | 98 | public static Rect roundIn(RectF rect) { |
| michael@0 | 99 | return new Rect((int)Math.ceil(rect.left), (int)Math.ceil(rect.top), |
| michael@0 | 100 | (int)Math.floor(rect.right), (int)Math.floor(rect.bottom)); |
| michael@0 | 101 | } |
| michael@0 | 102 | |
| michael@0 | 103 | public static IntSize getSize(Rect rect) { |
| michael@0 | 104 | return new IntSize(rect.width(), rect.height()); |
| michael@0 | 105 | } |
| michael@0 | 106 | |
| michael@0 | 107 | public static Point getOrigin(Rect rect) { |
| michael@0 | 108 | return new Point(rect.left, rect.top); |
| michael@0 | 109 | } |
| michael@0 | 110 | |
| michael@0 | 111 | public static PointF getOrigin(RectF rect) { |
| michael@0 | 112 | return new PointF(rect.left, rect.top); |
| michael@0 | 113 | } |
| michael@0 | 114 | |
| michael@0 | 115 | public static boolean fuzzyEquals(RectF a, RectF b) { |
| michael@0 | 116 | if (a == null && b == null) |
| michael@0 | 117 | return true; |
| michael@0 | 118 | else if ((a == null && b != null) || (a != null && b == null)) |
| michael@0 | 119 | return false; |
| michael@0 | 120 | else |
| michael@0 | 121 | return FloatUtils.fuzzyEquals(a.top, b.top) |
| michael@0 | 122 | && FloatUtils.fuzzyEquals(a.left, b.left) |
| michael@0 | 123 | && FloatUtils.fuzzyEquals(a.right, b.right) |
| michael@0 | 124 | && FloatUtils.fuzzyEquals(a.bottom, b.bottom); |
| michael@0 | 125 | } |
| michael@0 | 126 | } |
