Add pdf question

[sanpangzi]

Hi Muaz, Now Canvas-Designer only can add image, I want to add other, such as PDF. Do you any advice? I am looking forward to your reply.

[muaz-khan]

You can use javascript libraries (search-on-google) to convert PDF into images, and then import single or multiple images (DataURIs or Blobs) into the tool using image-tool methods (reuse button-click event to pass DataURI instead of selecting from system).

(pdf-based) JS libraries may generate Canvas object. You can use canvas.toDataURL() to get images.

[sanpangzi]

Ok, thank you, Muaz, I will try it.

[jonatap2chat]

Hi guys, Did you manage to allow for import and export to pdf? I am just looking at it myself and be interested to hear if you made any progress. By the way Muaz-khan loving all your webrtc projects, awesome :) Jon

[sanpangzi]

I use php libraries imagick convert pdf to png，and use canvas.toDataURL() put them to canvas.

[jonatap2chat]

Hi, thankyou so much for the reply.

Great I have just been looking at JavaScript or node js libraries, interesting about php ones.

And then what do you use to convert them back after annotation in canvas may I ask?

Any code example would be much appreciated.

Thankyou very much!

Jon On Wed, 18 Jul 2018 at 02:10, qian_hai_zhen [email protected] wrote:

I use php libraries imagick convert pdf to png，and use canvas.toDataURL() put them to canvas.

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Jon Hunter

Chief Technical Officer E: [email protected] w: www.atap2chat.com

[sanpangzi]

First install the php library on your server, and use the follow code convert: and you can see the results on server as follow: second on canvas, you can get these image according to path, as follow: https://uploadt.dz101.com/uploadfiles/weiXinO2OpdfCourseware/2018/07/18/pdf749891531878335/1.png third import the image by url as follow:

[jonatap2chat]

Hi,

Thankyou so much great documentation and code really appreciate it.

One last question, any recommendation for converting back to pdf and saving after drawing on canvas?

Thankyou so much!

Jon On Wed, 18 Jul 2018 at 02:53, qian_hai_zhen [email protected] wrote:

First install the php library on your server, and use the follow code convert: [image: _20180718094058] https://user-images.githubusercontent.com/15684202/42854509-bdbbe0a4-8a6e-11e8-8ef0-8427572bd417.png and you can see the results on server as follow: [image: 222] https://user-images.githubusercontent.com/15684202/42854587-0ceabdda-8a6f-11e8-9bb8-595b73f98228.png second on canvas, you can get these image according to path, as follow:

https://uploadt.dz101.com/uploadfiles/weiXinO2OpdfCourseware/2018/07/18/pdf749891531878335/1.png [image: 333] https://user-images.githubusercontent.com/15684202/42854706-b87a64ca-8a6f-11e8-834f-64d79dcad262.png third import the image by url as follow: [image: 444] https://user-images.githubusercontent.com/15684202/42854796-2d91fbe2-8a70-11e8-96a7-a278656918e6.png [image: 666] https://user-images.githubusercontent.com/15684202/42854799-2fd205b4-8a70-11e8-8b9a-43516f008bed.png [image: 777] https://user-images.githubusercontent.com/15684202/42854853-5ad5384e-8a70-11e8-9fd5-b47916ab77a7.png

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Regards Jon

Jon Hunter

Chief Technical Officer E: [email protected] w: www.atap2chat.com

[ph4t0o0o0om]

@sanpangzi hi i saw you comment . Now is your canvas support upload pdf function and sync in to other users and can draw on presentation? Please help me

[ph4t0o0o0om]

Please help me :(