Default size for shapes

[Harold]

Dear list,

I'm taking my first steps into making some Dia shapes but I'm having
some trouble with the size of the shapes when you add one to your
layout. Ideally I'd like to create shapes with a predefined size and
that aren't scalable. I'd like to use these shapes to draw electrical
schematics.

If I create a shape with either a size of 1000 or 1, the object is
always the same size when adding them to the layout.


http://www.daa.com.au/~james/dia-shape-ns";
xmlns:svg="http://www.w3.org/2000/svg";>
  Shape
  shape.png
  
  

  


... is the same size as:


http://www.daa.com.au/~james/dia-shape-ns";
xmlns:svg="http://www.w3.org/2000/svg";>
  Shape
  shape.png
  
  

  


How can I create a smaller shape? Bonus points for telling me how I
can create a non-scalable shape ;)


Cheers!

Harold
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Re: Default size for shapes

[Michael Ross]

Base units for Dia are centimeters.  I believe you need to think in cm when
making shapes.  I don't make shapes, so hopefully someone else will chime
in.

M

On Tue, Nov 6, 2012 at 9:46 AM, Harold  wrote:

> Dear list,
>
> I'm taking my first steps into making some Dia shapes but I'm having
> some trouble with the size of the shapes when you add one to your
> layout. Ideally I'd like to create shapes with a predefined size and
> that aren't scalable. I'd like to use these shapes to draw electrical
> schematics.
>
> If I create a shape with either a size of 1000 or 1, the object is
> always the same size when adding them to the layout.
>
> 
> http://www.daa.com.au/~james/dia-shape-ns";
> xmlns:svg="http://www.w3.org/2000/svg";>
>   Shape
>   shape.png
>   
>   
>  height="1000"/>
>   
> 
>
> ... is the same size as:
>
> 
> http://www.daa.com.au/~james/dia-shape-ns";
> xmlns:svg="http://www.w3.org/2000/svg";>
>   Shape
>   shape.png
>   
>   
> 
>   
> 
>
> How can I create a smaller shape? Bonus points for telling me how I
> can create a non-scalable shape ;)
>
>
> Cheers!
>
> Harold
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> FAQ at http://live.gnome.org/Dia/Faq
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>
>


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Re: Default size for shapes

[Hans Breuer]

At 06.11.2012 15:46, Harold wrote:

Dear list,

I'm taking my first steps into making some Dia shapes but I'm having
some trouble with the size of the shapes when you add one to your
layout. Ideally I'd like to create shapes with a predefined size and
that aren't scalable. I'd like to use these shapes to draw electrical
schematics.

If I create a shape with either a size of 1000 or 1, the object is
always the same size when adding them to the layout.


Please take a look into the specification of custom shapes:
http://git.gnome.org/browse/dia/tree/doc/custom-shapes#n109

IIRC this documentation is also included the user manual.



How can I create a smaller shape? Bonus points for telling me how I
can create a non-scalable shape ;)

Having some extra state to enable non-resizable shapes would require some 
source code modification in the custom shape module, e.g.:

http://git.gnome.org/browse/dia/tree/objects/custom/custom_object.c#n759

It is not part of specification or implementation yet.

HTH,
Hans

 Hans "at" Breuer "dot" Org ---
Tell me what you need, and I'll tell you how to
get along without it.-- Dilbert
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Re: Default size for shapes

[Harold]

On Tue, Nov 6, 2012 at 10:05 PM, Hans Breuer  wrote:
> At 06.11.2012 15:46, Harold wrote:
>> If I create a shape with either a size of 1000 or 1, the object is
>> always the same size when adding them to the layout.
>>
> Please take a look into the specification of custom shapes:
> http://git.gnome.org/browse/dia/tree/doc/custom-shapes#n109
>
> IIRC this documentation is also included the user manual.

Thanks! The default-width/height enabled me to create realy small
shapes like this:


http://www.daa.com.au/~james/dia-shape-ns";
xmlns:svg="http://www.w3.org/2000/svg";>
  0.3
  0.3
  Capacitor
  capacitor.png
  
  


  
  




  



The only problem I now have is adding a textbox. If I use  the tiny shape grows
to humongous proportions again, probably due to the large default font
size of 22.68 pt.

What tiny textbox can I add to the tiny shape to stop it from gowing?


>> How can I create a smaller shape? Bonus points for telling me how I
>> can create a non-scalable shape ;)
>>
> Having some extra state to enable non-resizable shapes would require some
> source code modification in the custom shape module, e.g.:
> http://git.gnome.org/browse/dia/tree/objects/custom/custom_object.c#n759
>
> It is not part of specification or implementation yet.

Well, let's skip this part for now ...


Cheers!


Harold
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