From: Victor Reyes <victor.reyes@...>
Date: 2008-04-01T21:44:16+09:00
Subject: Re: Displaying gruff graphs

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Alex,

I do truly appreciate your time to explain this new stuff to me.
I will try to digest the info you provided me and also I will try to gather
more info from the wx doc.
Do you know if wx runs under AIX (IBM UNIX)?

Thank you

Victor

On Mon, Mar 31, 2008 at 5:10 PM, Alex Fenton <alex@deleteme.pressure.to>
wrote:

> Victor Reyes wrote:
>
> > I finally got this working with wx by hard-coding the file path.
>
> That other first error looks like an ImageMagick problem. Sorry I can't
> help with that as I'm too lazy to install it; I just used wxRuby's own
> image file writing features to test it out quickly.
>
> > The graphs
> > (pie) is displayed, but now I have a small glitch, of course.
> > The frame is a about 1/4 of what it needs to be, and so I have to resize
> it
> > with the mouse.
> > Perhaps I need to make the frame where the graph is displayed a bit
> larger.
> > Is there anyway to make the size of the frame "dynamic" based on the
> size of
> > the image to be displayed?
>
> You can either constrain the frame to be a particular size, and prevent
> it being resized, or dynamically resize the graph image as the frame is
> resized by the user's use of the mouse.
>
> For the former, when you call super in the GruffFrame constructor, add
> the argument :style => Wx::DEFAULT_FRAME_STYLE ^ Wx::RESIZE_BORDER
>
> (i.e. use the default frame style, minus the mouse-draggable resize
> handle in the corner)
>
> Then in the GruffFrame#initialize method, set the Frame's client_size to
> the size you want the image, e.g.
>
> self.client_size = [480, 320]
>
> (The "client size" is the space within the Frame that is available for
> drawing on - its total pixel size minus the window borders, title bar
> etc. This way of setting the frame size will given consistent results
> across Linux, Windows and OS X)
>
> If you want the latter, a resizeable frame, on each refresh, tell Gruff
>  what size of PNG you want. According to the docs, you can pass the
> Gruff Graph constructor a size as a string. So call new like this:
>
> graph = Gruff::Lines.new("#{client_size.width}x#{client_size.height}")
>
> If you go down this route, you'll probably also want to refresh the
> graph if the Frame is resized; use evt_size in the frame constructor for
> this:
>
> evt_size { | evt | refresh; evt.skip }
>
> > In the mean time I will look in the wx documentation.
>
> I expect you've found http://wxruby.rubyforge.org/doc/
>
> If you've got further questions about wxRuby, there's a friendly mailing
> list which is a better place than c.l.r. for specifically wxRuby
> questions: http://rubyforge.org/mail/?group_id=35
>
> alex
>
>

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