1090168-1.html (1184B)
1 <!DOCTYPE html> 2 <html> 3 <head> 4 <meta charset="utf-8"> 5 </head> 6 <body> 7 <script type="text/javascript"> 8 var testFont = '40px sans-serif'; 9 10 function test(x, y, text, style, rotation) { 11 var canvas = document.createElement("canvas"); 12 canvas.width = 400; 13 canvas.height = 400; 14 canvas.style.cssText = 'position:absolute;' + style; 15 document.getElementsByTagName('body')[0].appendChild(canvas); 16 var ctx = canvas.getContext('2d'); 17 ctx.globalAlpha = 0.5; 18 ctx.beginPath(); 19 ctx.moveTo(x - 20, y); ctx.lineTo(x + 20, y); 20 ctx.moveTo(x, y - 20); ctx.lineTo(x, y + 20); 21 ctx.stroke(); 22 ctx.globalAlpha = 1.0; 23 ctx.font = testFont; 24 if (rotation != 0) { 25 ctx.translate(x,y); 26 ctx.rotate(rotation); 27 ctx.translate(-x,-y); 28 } 29 ctx.fillText(text, x, y); 30 } 31 32 // Testcase: vertical text with orientation:sideways-right 33 test(100, 50, 'Hello', 'writing-mode:vertical-lr;text-orientation:sideways-right', 0); 34 35 // Reference: horizontal text with 90° rotation 36 // test(100, 50, 'Hello', 'writing-mode:horizontal-tb', Math.PI/2); 37 38 // Non-reference: vertical text with orientation:mixed 39 // test(100, 50, 'Hello', 'writing-mode:vertical-lr;text-orientation:mixed', 0); 40 41 </script>