Tk Source Code

It would be nice to be able to do:

    image issupported -format svg ; # or somesuch

And get a return code or throw an error.

Current code looks like:

    set vars(have.tksvg) false
    try {
      set ti [image create photo -data {<svg></svg>} -format svg]
      image delete $ti
      set vars(have.tksvg) true
    } on error {err res} {
      lassign [dict get $res -errorcode] a b c d
      if { $c ne "PHOTO_FORMAT" } {
        set vars(have.tksvg) true
      }
    }

This ticket is now processed as TIP714 https://core.tcl-lang.org/tips/doc/trunk/tip/714.md.

The implementation branch is tip-714-image-driver-info with current head [7da58a06].

Thanks for all, Harald

I didn't assign this to me. I have just changed the "Subsystem" class...

Dear Francois, thank you for assigning this RFE to you. I have lost it out of sight. I may care after the release of Tk 9.0, so in August 2024.

Thank you for all the work, Harald

Christian Werner posted on the core list to a similar subject:

  image types
  -> photo bitmap

  image types photo
  -> wrong # args ...

make "image types photo" report the photos supported,
make "image types bitmap" report what corresponds best,
make "image types something" report an error if
"something" is no known image type.

Thank you,

the point was already discussed and I like it. It is the exposure of an internal data structure, so a relatively low-hanging fruit.

In addition, there might be capabilities exposed like:

- file writable - data output (base64 or binary ;-) )

Thank you, Harald