Re: dynamic mixing of primitives and background picture - semi-gui cropping utility

[postdoc38 yahoo fr]

Thanks for the input.

Any pointer on how to do the "in app" drawing? 

Also, is there a way to make the window scroll automatically to the 
appropriate corner of the image when the keys 1-4 are pressed. 
It'd be nice to have that when viewing the full-size picture.

Guillaume

On Wednesday 11 November 2009 02:41:57 muppet wrote:
> You forgot "use strict"!
>
>
> Instead of hard-coded numeric key values, you should use the keysyms
> hash.
>
> use Gtk2::Gdk::Keysyms;
>
> ...
>
>     if ($key_val == $Gtk2::Gdk::Keysyms{GDK_Up}) {
>
> etc
>
> (Or mess around with an accelerator table.  For what you have, the key
> value processing is probably nice and user-friendly, as it requires no
> modifier keys.)
>
>
> Instead of connecting to delete-event to quit the main loop, do that
> in the destroy signal on the window.  Then you can add "q" as a
> hotkey, and just call $window->destroy and the right thing will happen.
>
>
>
> In auto_crop(), should check $color for an empty value; i loaded up a
> jpeg that didn't have a border, and imagemagic returned no border for
> it, causing a bunch of uninitialized value warnings.
>
> Oh, actually my imagemagick is too old to support the special info:
> name.  You might want to do a version check on convert before doing
> that stuff.
>
>
> If you want to learn about gdk, you can try to do the drawing all in
> the app instead of bouncing back and forth with imagemagick.  You
> could also take the slow route and draw on the pixels in perl, but
> that's a bit icky.
>
>
> --
> It's all very complicated and would take a scientist to explain it.
>    -- MST3K