projects / dygraphs.git / blame
| Commit | Line | Data |
|---|---|---|
| fb63bf1b DV |
1 | <html> |
| 2 | <head> | |
| 3 | <script src="../dashed-canvas.js"></script> | |
| 4 | </head> | |
| 5 | <body> | |
| 6 | <p>You should see solid black and blue lines with a dashed red line in between | |
| 7 | them:</p> | |
| 8 | <canvas id=cnv width=640 height=480></canvas> | |
| 9 | ||
| 10 | <p>You should see a solid black line:</p> | |
| 11 | <canvas id=cnv2 width=640 height=100></canvas> | |
| 12 | ||
| 13 | <script type="text/javascript"> | |
| 14 | ctx = document.getElementById("cnv").getContext("2d"); | |
| 15 | ctx2 = document.getElementById("cnv2").getContext("2d"); | |
| 16 | ||
| 17 | // Draw a line segment -- should be perfectly normal. | |
| 18 | ctx.lineWidth = 2; | |
| 19 | ctx.save(); | |
| 20 | ctx.beginPath(); | |
| 21 | ctx.moveTo(80, 50); | |
| 22 | ctx.lineTo(280, 400); | |
| 23 | ctx.moveTo(330, 400); | |
| 24 | ctx.lineTo(580, 200); | |
| 25 | ctx.stroke(); | |
| 26 | ||
| 27 | // Draw a dashed line segment. | |
| 28 | ctx.installPattern([10, 10]); | |
| 29 | ctx.strokeStyle = 'red'; | |
| 30 | ctx.beginPath(); | |
| 31 | ctx.moveTo(100, 50); | |
| 32 | ctx.lineTo(300, 400); | |
| 33 | ctx.lineTo(300, 450); | |
| 34 | ctx.moveTo(350, 450); | |
| 35 | ctx.lineTo(350, 400); | |
| 36 | ctx.lineTo(600, 200); | |
| 37 | ctx.stroke(); | |
| 38 | ||
| 39 | // An unrelated canvas should not be aware of the pattern. | |
| 40 | ctx2.beginPath(); | |
| 41 | ctx2.moveTo(100, 50); | |
| 42 | ctx2.lineTo(600, 50); | |
| 43 | ctx2.stroke(); | |
| 44 | ||
| 45 | ctx.uninstallPattern(); | |
| 46 | ||
| 47 | // Now that we've uninstalled the pattern, should be normal again. | |
| 48 | ctx.strokeStyle = 'blue'; | |
| 49 | ctx.beginPath(); | |
| 50 | ctx.moveTo(120, 50); | |
| 51 | ctx.lineTo(320, 400); | |
| 52 | ctx.moveTo(370, 400); | |
| 53 | ctx.lineTo(620, 200); | |
| 54 | ctx.stroke(); | |
| 55 | ||
| 56 | ctx.restore(); | |
| 57 | </script> | |
| 58 | </body> | |
| 59 | </html> |