Comments (9)
muaz-khan
commented on August 18, 2024
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.
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sanpangzi
commented on August 18, 2024
Ok, thank you, Muaz, I will try it.
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jonatap2chat
commented on August 18, 2024
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
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sanpangzi
commented on August 18, 2024
I use php libraries imagick convert pdf to png，and use canvas.toDataURL() put them to canvas.
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jonatap2chat
commented on August 18, 2024
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 ***@***.***> wrote:
I use php libraries imagick convert pdf to png，and use canvas.toDataURL()
put them to canvas.
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sanpangzi
commented on August 18, 2024
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:
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jonatap2chat
commented on August 18, 2024
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 ***@***.***> 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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ph4t0o0o0om
commented on August 18, 2024
@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
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ph4t0o0o0om
commented on August 18, 2024
Please help me :(
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