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thread-pond / signature-pad

A jQuery plugin for assisting in the creation of an HTML5 canvas based signature pad. Records the drawn signature in JSON for later regeneration.
BSD 3-Clause "New" or "Revised" License
727 stars 292 forks source link

Overlapping of signature #148

Closed swapnilskate closed 9 years ago

swapnilskate commented 9 years ago

I have an issue using lenevo tablet. I have used multiple signature on my app. For some signature it works fine but for some signature I get border overflow of signature. screenshot_2015-03-06-21-41-26

swapnilskate commented 9 years ago

Would you please help me out. I have used your code for my app. Thank you for this excellent code which is working fine except this bug. this happens in android device only

thomasjbradley commented 9 years ago

That's really unusual. Is there possibly a hidden canvas behind the one you're signing on?

swapnilskate commented 9 years ago

Hey thanks man for an awesome library. I have resolved this by changing overflow:visible property to each an every parent of canvas. This very issue was reported here and there I saw people suggesting the approach of overflow : visible.

This is a brilliant attempt made by you and open sourcing it so that people like us could be benefited.

The only problem here is now hardware acceleration in my android device.

I am using Rhodes4.0.0 for app development. I have 4 signature pads on one view and that is why if I go on capturing signature the quality goes on decreasing. yo can see from pictures that curves are not smooth and subsequently smoothness disappears. After 6-7 signature attempt of a cirlce drawing results in a square.

Would like to know how can I improve smoothness with hardware acceleration and without hardware acceleration.

Thank You.

thomasjbradley commented 9 years ago

I don't know. In the past there has been some performance issues on Android because of the speed at which the events are being fired. But, for why they get worse the more you have, I really have no idea.