comp.lang.idl-pvwave archive: archive » border around draw widget

Home » Public Forums » archive » border around draw widget

Show: Today's Messages :: Show Polls :: Message Navigator
E-mail to friend

Re: border around draw widget [message #50572 is a reply to message #50381]

Mon, 09 October 2006 15:32

Rick Towler
Messages: 821
Registered: August 1998

Senior Member

JD Smith wrote:
> On Thu, 28 Sep 2006 10:17:24 -0700, Rick Towler wrote:
>
>> I think we have strayed way off on this one... While JD's suggestion is
>> clever, from a usability perspective I don't think it is as effective as
>> a colored border or a color shift of the image. And adding a border is
>> trivial.
>
> Yes, trivial, unless you need all pixels for drawing. Yes, you could just
> draw over the top of the image, assuming the loss of a few pixels around
> the edge is irrelevant. Otherwise, the base-on-base trick might be worth
> it, to keep your drawing code simple (...I have a canvas which is 248x248
> pixels if selected, or 256x256 otherwise...).

I was purposefully keeping it as simple as possible, but that's a good
point. If I were doing this I would either add a semi-transparent
border (via compositing, not using oplot) or shift the color. And if I
really needed every pixel to be displayed unadulterated, I would just
add a black border around the image and draw the border there. All
options that *I* think are relatively simple.

I like the using color to provide additional feedback but one can apply
the technique that best suits the requirements.

-Rick

Report message to a moderator

[Message index]

		border around draw widget By: Laurens on Wed, 27 September 2006 06:42
		Re: border around draw widget By: Michael Galloy on Wed, 04 October 2006 08:06
		Re: border around draw widget By: Rick Towler on Mon, 09 October 2006 15:32

Previous Topic:	Listing of Internal IDL Routines
Next Topic:	Re: Listing of Internal IDL Routines

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Sun Oct 12 02:41:26 PDT 2025

Total time taken to generate the page: 0.43869 seconds