| <!DOCTYPE html> |
| <style> |
| #break-test { |
| font:50px/1 Ahem; |
| width:3em; |
| } |
| #result { |
| font:15px/1 monospace; |
| white-space:pre; |
| } |
| </style> |
| <div id="result"></div> |
| <div id="break-test"></div> |
| <script> |
| var beginChar = 33; |
| var endChar = 127; |
| var breakTest = document.getElementById("break-test"); |
| var breakTestFontsize = parseFloat(getComputedStyle(breakTest).fontSize); |
| var nbsp = String.fromCharCode(0xA0); |
| nbsp = nbsp + nbsp; |
| |
| var matrix = getLineBreakMatrix(); |
| |
| var header = []; |
| for (var i = 0; i < matrix.length; i++) |
| header.push(String.fromCharCode(beginChar + i)); |
| var rows = [" " + header.join("")]; |
| for (var i = 0; i < matrix.length; i++) { |
| rows.push(String.fromCharCode(beginChar + i) + " " + matrix[i].map(function (canBreak) { |
| return canBreak ? "/" : "X"; |
| }).join("")); |
| } |
| result.textContent = rows.join("\n"); |
| |
| function getLineBreakMatrix() { |
| var matrix = []; |
| for (var last = beginChar; last < endChar; last++) { |
| var canBreakBefore = []; |
| for (var current = beginChar; current < endChar; current++) |
| canBreakBefore.push(canBreakBetween(last, current)); |
| matrix.push(canBreakBefore); |
| } |
| return matrix; |
| } |
| |
| function canBreakBetween(last, current) { |
| breakTest.textContent = nbsp + String.fromCharCode(last) + String.fromCharCode(current); |
| return breakTest.offsetHeight / breakTestFontsize > 1.9; |
| } |
| |
| breakTest.textContent = ""; |
| if (window.testRunner) |
| testRunner.dumpAsText(); |
| </script> |
