toDataURL: multiplier : 1 BUG

[evolutionjay]

Version

2.0

Test Case

none

Steps to reproduce

Useing Retina Screen and Canvas.enableRetinaScaling is true

useing toDataURL

options is

canvasObject.toDataURL({
  multiplier: 1
})

is 2x size bigger than Normal screen image

but I am try this:

canvasObject.toDataURL({
  multiplier: 0.5
})

It is work .

canvasObject.toDataURL({
  multiplier: 0.9999999999
})

also work very well

Expected Behavior

Actual Behavior

[asturur]

Hey @evolutionjay i would like to fix this, are you able to making a failing fiddle? Reading the code i cannot understand why it should happen.

[dmitry-kostin]

bump also have this issue on retina screen
created the fiddle https://jsfiddle.net/Lktr6jL0/

[asturur]

thanks!

[dmitry-kostin]

@asturur Could you confirm please can this be fixed anytime soon? Or should we start to search the solution by owns?

[asturur]

Well i cannot confirm, since i m swamped of work.
You should always have a look and point someone in the right direction or solve it by yourself bad give back the solution.

What i can say is that i hope is a quick fix to put in asap.

[asturur]

so i do not think there is any strange bug. retina canvas are double big.
Probably we should take care of this when exporting, but this is the default behaviour and has been like this since version 1.5, an 2.0 is in rc status.
What i can do is address with docs, if you do not want retina scaling on exported image use:

{ multiplier: 1/canvas.getRetinaScaling() }

changing code would not give you any difference that you cannot obtain like this

[asturur]

Ok since for object we offer an option, default to false, we can extend the same on the canvas.