[racket-dev] while resizing drawing into a canvas is off

From: Robby Findler (robby at eecs.northwestern.edu)
Date: Thu Oct 20 12:15:35 EDT 2011

Generally, the <menukey>-c, <menukey>-v, keybindings (and friends)
come about via the menus, not via a keymap% object. And those menus
come in via a frame. I'm not sure how you're using your library, but
you might want to consider some of the mixins in the framework whose
names start with "frame:".


On Thu, Oct 20, 2011 at 11:12 AM, Matthew Flatt <mflatt at cs.utah.edu> wrote:
> At Thu, 20 Oct 2011 17:58:08 +0200, Marijn wrote:
>> Hash: SHA1
>> On 10/20/11 14:53, Matthew Flatt wrote:
>> > At Thu, 20 Oct 2011 11:16:59 +0200, Marijn wrote:
>> >> Could you perhaps comment on the slowness of the cursor appearing
>> >> in a clicked cell? It seems to have something to do with the
>> >> timer frequency, because if I decrease the frequency the first
>> >> time that the cursor appears is also sooner after clicking in a
>> >> cell.
>> >
>> > I think you need to add `(send grid refresh)' to the admin's
>> > `set-focus' method.
>> It's funny that you mention this `set-focus' method, because I can't
>> find it in the docs, although my code seems to think it's a canvas%
>> method (oops?). I hope my confusion isn't contagious. ;P
>> Calling `refresh' of either the display or the editor in the admin's
>> on-focus works beautifully though, thanks.
> Sorry --- I meant the `on-focus' method in your admin class.
>> >> Another thing. How do you enable simple select/copy/cut/paste
>> >> behavior with standard key-bindings in an editor?
>> >
>> > Apply `(current-text-keymap-initializer)' to the editor.
>> I'm kinda struggling with this one. What I came up with is:
>> (define default-keymap (new keymap%))
>> ((current-text-keymap-initializer) default-keymap)
>> (add-text-keymap-functions default-keymap)
>> and then I do (send editor set-keymap default-keymap) for each editor.
>> Is that what you meant?
> Yes, though I forgot exactly how the parameter value works.
>> This makes some emacs-like bindings work (C-a and C-e go to beginning
>> and end of line, C-y -> yank). Is there a way to get the more familiar
>> {C-a -> select-all, C-v -> copy-selection, etc.} bindings?
> Use `add-editor-keymap-functions' in addition to
> `add-text-keymap-functions'.
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