| <!DOCTYPE html> |
| <html> |
| <head> |
| <meta name="viewport" content="width=device-width, minimum-scale=1.0"> |
| <title>Test Page</title> |
| <style> |
| body { |
| /* Make page scrollable. */ |
| width: 300vw; |
| height: 300vh; |
| } |
| #range { |
| width: 400px; |
| } |
| #offscreenRange { |
| position: absolute; |
| left: 8px; |
| top: 200vh; |
| } |
| #dragLogger { |
| width: 300px; |
| height: 300px; |
| background-color: thistle; |
| position: absolute; |
| left: 500px; |
| top: 300px; |
| } |
| #pointerLogger { |
| width: 30px; |
| height: 30px; |
| background-color: burlywood; |
| } |
| </style> |
| </head> |
| <body> |
| <input id="range" type="range" min="0" max="100" value="0"> |
| <div id="dragLogger"></div> |
| <input id="offscreenRange" type="range" min="0" max="100" value="0"> |
| <div id="pointerLogger"></div> |
| <script> |
| let event_log = []; |
| let log_handler = |
| e => event_log.push(`${e.type}[${e.clientX},${e.clientY}]`); |
| |
| const el = document.getElementById('dragLogger'); |
| el.addEventListener('mousedown', log_handler); |
| el.addEventListener('mousemove', log_handler); |
| el.addEventListener('mouseup', log_handler); |
| |
| let pointer_log = []; |
| let pointer_handler = e => pointer_log.push(`${e.type}[${e.clientX},${e.clientY}]: ${e.buttons}`); |
| const pl = document.getElementById('pointerLogger'); |
| pl.addEventListener('pointerdown', pointer_handler); |
| pl.addEventListener('pointermove', pointer_handler); |
| pl.addEventListener('pointerup', pointer_handler); |
| pl.addEventListener('gotpointercapture', pointer_handler); |
| |
| pl.addEventListener('pointerdown', e=> pl.setPointerCapture(e.pointerId)); |
| </script> |
| </body> |
| </html> |
