In the SVG documents exported by FreeCAD's Drawing Module and used as page templates, several custom attributes can be used, originally for FreeCAD's own internal use, but could also be used by other FreeCAD-aware applications in the future. These attributes all use the freecad: namespace prefix. The namespace URL defined in those SVG documents refers to this page.

Usage

One pixel = one millimeter.

You must insert, somewhere inside your svg code, where you want the contents of the drawing to appear (for example at the end of the file, just before the last </svg> tag), the following line:


<!-- DrawingContent -->


<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<svg
   xmlns:freecad="http://www.freecadweb.org/wiki/index.php?title=Svg_Namespace"

In order to enable up to scale printing, the real word size has to be given in the width and height attributes of the SVG-Tag. The size of the document in user units, (px), has to be given in the viewBox attribute.

The following is to be formatted like the example below where:

  • xxx = pixel width
  • yyy = pixel height
width="xxxmm"
height="yyymm"
viewBox="0 0 xxx yyy"

Additional information for Working space and Title block may be added, and is defined on the Drawing templates page.

Attributes

freecad:EditableText

To use any of the freecad: attributes in your SVG documents, you must first define the freecad namespace as an attribute of the opening <svg> tag:

Defines a text in a template that can be edited by FreeCAD.

Example:

 <text freecad:EditableText="MyTitleText">
     <tspan>This is a title</tspan>
 </text>

freecad:basepoint1

Defines the first point of a Draft Dimension object (represented as a group in a SVG document). This attribute is used when importing the SVG fragment in FreeCAD, in order to recreate the dimension object. The group contains paths and other graphical items to correctly render the dimension object in other SVG applications.

Example:

 <g freecad:basepoint1="0.5 4.34" freecad:basepoint2="2.4 5.8" dimpoint="3.2 7.76">
     <path d="...">
 </g>

freecad:basepoint2

Defines the second point of a Draft Dimension object (represented as a group in a SVG document). This attribute is used when importing the SVG fragment in FreeCAD, in order to recreate the dimension object. The group contains paths and other graphical items to correctly render the dimension object in other SVG applications.

Example: see freecad:basepoint1

freecad:dimpoint

Defines the point of a Draft Dimension object through which the dimension line passes. This attribute is used when importing the SVG fragment in FreeCAD, in order to recreate the dimension object. The group contains paths and other graphical items to correctly render the dimension object in other SVG applications.

Example: see freecad:basepoint1

Example of code freecad:EditableText

This example is taken from a cartridge to a sheet A3_Landscape

1 : Title without textedit

Svg Namespace 01.png

  <g
     id="g3587">
    <text
       sodipodi:linespacing="119.00001%"
       id="text3482"
       y="229.10912"
       x="220.8476"
       style="font-size:1.97555566px;font-style:normal;font-weight:normal;line-height:119.00000572%;letter-spacing:0.01975556px;word-spacing:0.00846667px;writing-mode:lr-tb;fill:#000000;fill-opacity:1;stroke:none;font-family:Sans;-inkscape-font-specification:Sans"
       xml:space="preserve"><tspan
         y="229.10912"
         x="220.8476"
         id="tspan3484"
         sodipodi:role="line">AUTHOR NAME :</tspan></text>

2 : Title with textedit

Svg Namespace 02.png

  <g
     style="fill:none;stroke:#000000;stroke-width:0.13;stroke-linecap:butt;stroke-linejoin:miter"
     id="g578-7"
     transform="translate(0,4)">
    <text
       xml:space="preserve"
       style="font-size:4px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;line-height:125%;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;font-family:sans;-inkscape-font-specification:sans"
       x="220.9935"
       y="228.95425"
       id="text3331"
       sodipodi:linespacing="125%"
       freecad:editable="AuthorName"><tspan
         sodipodi:role="line"
         id="tspan3333"
         x="220.9935"
         y="228.95425">AUTHOR NAME</tspan></text>
    <text
    ...
    ...
    ...
    ... </text>
  
  </g>

Explanations

  <g

Beginning of the framework

     style="fill:none;stroke:#000000;stroke-width:0.13;stroke-linecap:butt;stroke-linejoin:miter"
     id="g578-7"
     transform="translate(0,4)">

Data on the framework

    <text

Beginning of the text block

       xml:space="preserve"
       style="font-size:4px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;line-height:125%;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;font-family:sans;-inkscape-font-specification:sans"

All the information about the text that will be displayed

       x="220.9935"
       y="228.95425"
       id="text3331"
       sodipodi:linespacing="125%"

Coordinates and identity where the text will appear

       freecad:editable="AuthorName"><tspan

Here AuthorName is the var managed by freecad:editable who saves the string to change that will be displayed

         sodipodi:role="line"
         id="tspan3333"
         x="220.9935"
         y="228.95425">AUTHOR NAME</tspan></text>

Coordinates and identity of the text that is displayed by default and </text> means the end of the block text

    <text
    ...
    ...
    ...
    ... </text>
  </g>

Other blocks texts and end </g> the framework grouping text blocks

It is possible after having worked the Inkscape SVG file as the file no longer works, it is possible that information has gone missing.

Then check that the edit text is not modified

Example :

  • editable = "AuthorName"
  • replace by freecad:editable = "AuthorName"

Other attributes availlables

See Drawing_templates

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