| <!doctype html> |
| <script src="../resources/runner.js"></script> |
| <script src="../layout/resources/line-layout-perf-test.js"></script> |
| <script src="resources/paint.js"></script> |
| |
| <div id="container"></div> |
| <script> |
| const kNumberOfWords = 10000 * 30; |
| const container = document.getElementById('container'); |
| const selection = window.getSelection(); |
| |
| container.textContent = (() => { |
| const words = []; |
| for (let i = 0; i < kNumberOfWords; ++i) |
| words.push(TextGenerator.createWord(i % 12 + 3)); |
| return words.join(' '); |
| })(); |
| |
| const text = container.firstChild; |
| var count = 0; |
| |
| measurePaint({ |
| iterationCount: 50, |
| warmUpCount: 5, |
| run: function() { |
| if (count < 20) { |
| // Select all. |
| selection.collapse(container, 0); |
| if (count % 2) |
| selection.extend(container, 1); |
| } else if (count < 35) { |
| // Modify selection at beginning. |
| selection.setBaseAndExtent(text, 4000 - count * 10, text, text.length); |
| } else if (count == 35) { |
| selection.setBaseAndExtent(text, 1000, text, 4000); |
| } else { |
| // Extend selection at end. |
| selection.modify("extend", "forward", "word"); |
| } |
| count++; |
| }, |
| }); |
| </script> |
| |
