Re: Does everyone make large objects, or is it just how I am using Dia?

[dunn <dnaughton dunnamin com>]

Andrey,

Thanks!  Sorry about the 'prefix' thing. It's just what I remembered 
from the manual, which is the same as the page link you sent.  It says:

   As in the example, you may use "compound names". Many shapes
   have first part of its name to indicate the sheet in which
   they appear, but this is optional.

So, I had copied a shape and renamed it in its file, and I had copied 
from a sheet file and renamed the shape there.  The names of both my 
sheet and the shape were different than the original.  It wasn't until I 
changed the first part of the compound name inside the shape file from 
'BPMN - ' to 'BPMN2 - ' that I could see my changes _and_ had no 
'duplicate' error.

I'm sure having made some of these or being familiar with the source 
code, the questions that I have most likely cannot even be seen.

For example, I started with this file from BPMN sheet with the filename 
'Start-Event-Message.shape':

01 <?xml version="1.0" encoding="UTF-8"?>
02 <shape xmlns="http://www.daa.com.au/~james/dia-shape-ns"; 
xmlns:svg="http://www.w3.org/2000/svg";>
03   <name>BPMN - Start-Event-Message</name>
04   <icon>Start-Event-Message.png</icon>
05   <connections>
06     <point x="0" y="0"/>
07     <point x="10" y="0"/>
08     <point x="10" y="10"/>
09     <point x="0" y="10"/>
10     <point x="5" y="12"/>
11     <point x="5" y="-2"/>
12     <point x="-2" y="5"/>
13     <point x="12" y="5"/>
14   </connections>
15   <aspectratio type="fixed"/>
16   <svg:svg>
17     <svg:ellipse style="fill: default" cx="5" cy="5" rx="7" ry="7"/>
18     <svg:ellipse style="fill: none; fill-opacity:0; stroke-width: 
0.1; stroke: #000000" cx="5" cy="5" rx="7" ry="7"/>
19     <svg:rect style="fill: default" x="1" y="2" width="8" height="6"/>
20     <svg:rect style="fill: none; fill-opacity:0; stroke-width: 0.1; 
stroke: #000000" x="1" y="2" width="8" height="6"/>
21     <svg:line style="fill: none; fill-opacity:0; stroke-width: 0.1; 
stroke: #000000" x1="1" y1="2" x2="5" y2="5"/>
22     <svg:line style="fill: none; fill-opacity:0; stroke-width: 0.1; 
stroke: #000000" x1="9" y1="2" x2="5" y2="5"/>
23   </svg:svg>
24 </shape>

line 02: None of the sample files I have opened have online files that 
match the 'xmlns=' field.  I don't know if that was a cause of my 
'duplicate' error, but none of the files reference the xml namespace anyway.

line 03: This is where nothing worked with all the files renamed and 
this field set to 'BPMN - Start-Event-Message by dunn'. When I changed 
it to 'BPMN2 - Start-Event-Message by dunn' it worked.

line 05-14: Here, the bounding box of the shape is 14x14, but the 
connection points have strange numbers. I thought they must just be 
relative to the bounding box size of the shape.  But that wouldn't 
explain the negative numbers.  So then I figured the points must all be 
relative to a 10x10 area centered in the center of the shape, but when I 
opened other files this was not true.  When I opened other files they 
were different ranges but those had svg size in line 16. One of them had 
svg limits of 10,12 but was a circle. I don't know how the two are 
related.  I'll figure it out with trial and error tonight though.

lines 17-18: I don't know why the duplicate svg shapes all through the 
files. It doesn't seem to need it and I don't know why it's done like that.

So, I am swimming in total ignorance :-!  I am not just working with "A 
typical shape file may look something like this...", because I have all 
of the sample files from the installation.  I don't know which are 
supposed to be shining examples of what should be done, but I'm sure 
I'll get something working.

What I really don't think I'll figure out from the samples is the 
'xmlns=' part, because I have no samples of what should be there.

I suppose I'll lose the xml namespace and the duplicate shape 
definitions. I only ask such things because I don't want to go back and 
change the files I create because I didn't know the obvious.

Thanks, Andrey!
   -- Dunn


On 07/25/2014 07:58 PM, Andrey Repin wrote:
> Greetings, dunn!
>
> > I actually didn't have any files or shapes to share because I was about
> > to create some, but if I have other questions, can we add an attachment
> > on the mailing list messages?
> Yes.
>
> > I've actually been working on figuring out why the shapes are coded the
> > way they are.
> Quite easy - to be scalable.
>
> > I copied some into my local shapes folder and couldn't figure out why my
> > changes would not show up.
> Because they weren't listed in any sheet. Or because your shapes have
> duplicate names. Or both.
>
> > It took a lot of tweaking thinking it was not having extents on the svg
> > part, whether line thickness were not being accepted because in some shapes
> > they're stated with reals, other integers, and some not at all.
> In reality (pun intended), the shape measuring units are relative to the shape
> itself, and bear [almost] no significance for resulting diagram.
>
> > It turns out there was something to do with the prefix on the name of the shapes.
> There's no such thing as prefix.
>
> > I still couldn't state definitely what I had wrong.
> > It will take some more testing to figure out how the sheet file finds the
> > shapes (since I noticed this when I got a 'Duplicate Object" error after a
> > couple of hours of confusion :-!).  (My file was still showing me the one I had
> > copied even though I had created a new sheet and renamed the shape. Sheesh!)
> https://git.gnome.org/browse/dia/plain/doc/custom-shapes
>
> > I haven't really used Dia before trying to customize it though, and it
> > wasn't until I had made my first shape that I learned everything is
> > brought in at the same size anyway.  (It would be nice to learn we can
> > change this with Python on insertion or something!)
> Yes.
>
>
> --
> WBR,
> Andrey Repin (anrdaemon freemail ru) 26.07.2014, <06:49>
>
> Sorry for my terrible english...
>
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