| /* |
| * Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file |
| * for details. All rights reserved. Use of this source code is governed by a |
| * BSD-style license that can be found in the LICENSE file. |
| */ |
| /** |
| * @assertion |
| * @description |
| */ |
| import "dart:html"; |
| import "dart:math" as Math; |
| import "../../../testharness.dart"; |
| import "../resources/subpixel-utils.dart" as SubPixelLayout; |
| |
| const String htmlEL1 = r''' |
| <style> |
| #container-border { |
| border: 1px solid black; |
| margin: 10px; |
| width: 500px; |
| } |
| |
| #container { |
| font: 20px/1 Ahem, sans-serif; |
| width: 500px; |
| height: 300px; |
| text-align: right; |
| } |
| |
| #float-right { |
| float: right; |
| position: relative; |
| overflow: visible; |
| shape-outside: ellipse(200px 100px at 225px 125px); |
| shape-margin: 25px; |
| width: 450px; |
| height: 250px; |
| } |
| |
| #svg-shape-ellipse { |
| position: absolute; |
| display:block; |
| top: 0px; |
| left: 0px; |
| width: 500px; |
| height: 300px; |
| } |
| </style> |
| '''; |
| |
| const String htmlEL2 = r''' |
| <p>The right edges of the three black squares should follow the outer ellipse boundary and each square should appear on a subsequent line.</p> |
| <div id="container-border"> |
| <div id="container"> |
| <div id="float-right"> |
| <svg id="svg-shape-ellipse" xmlns="http://www.w3.org/2000/"> |
| <ellipse cx="225" cy="125" rx="200" ry="100" fill="green"></ellipse> |
| <ellipse cx="225" cy="125" rx="225" ry="125" fill="none" stroke="green"></ellipse> |
| </svg> |
| </div> |
| <span id="s1">X</span></br><span id="s2">X</span><br/><span id="s3">X</span> |
| </div> |
| </div> |
| <div id="console"></div> |
| '''; |
| |
| Rectangle elementRect(elementId) { |
| Rectangle s = document.getElementById("container").getBoundingClientRect(); |
| Rectangle r = document.getElementById(elementId).getBoundingClientRect(); |
| return new Rectangle(r.left - s.left, r.top - s.top, r.width, r.height); |
| } |
| |
| // You'll find the equation for the X intercept of an elliptical arc here (among other places): |
| // http://hansmuller-webkit.blogspot.com/2012/07/computing-horizonal-rounded-rectangle.html |
| |
| String marginEllipseRightXIntercept(y, cx, rx, ry) { |
| var containerWidth = document.getElementById("container").getBoundingClientRect().width; |
| var f = SubPixelLayout.snapToLayoutUnit(containerWidth - (cx + rx * Math.sqrt(1 - Math.pow((ry - y) / ry, 2)))); |
| return f.floor().toString(); |
| } |
| |
| // In the ".right" tests below, it's the lower edge of the 20px Ahem glyph that that defines the element rect's left edge. |
| // That's why the Y coordinate in each of those tests is 20 greater than the ".top" test. |
| void main() { |
| document.head.appendHtml(htmlEL1); |
| document.body.appendHtml(htmlEL2); |
| |
| shouldBe(elementRect('s1').top, 0); |
| shouldBe(elementRect('s1').right, marginEllipseRightXIntercept(20, 225, 225, 125)); |
| |
| shouldBe(elementRect('s2').top, 20); |
| shouldBe(elementRect('s2').right, marginEllipseRightXIntercept(40, 225, 225, 125)); |
| |
| shouldBe(elementRect('s3').top, 40); |
| shouldBe(elementRect('s3').right, marginEllipseRightXIntercept(60, 225, 225, 125)); |
| |
| checkTestFailures(); |
| } |