transparentify.inx

<?xml version="1.0" encoding="UTF-8"?>
<inkscape-extension xmlns="http://www.inkscape.org/namespace/inkscape/extension">
  <name>Transparentify</name>
  <id>org.inkscape.color.transparentify_extension</id>

  <param name="tab" type="notebook">
    <page name="Transparency" gui-text="Transparency">
      <param name="opacity" type="float" min="1" max="99" appearance="full" gui-text="opacity in %:" gui-description="amount of desired transparency">80</param>
      <param name="force_transparency" type="boolean" gui-text="force transparency" gui-description="if transparency cannot be reached, force value and adopt color. By default, the max possible transparency is set">false</param>
    </page>
    <page name="Background Color" gui-text="Background Color">
      <param name="background_color" gui-text="Background Color" type="color" gui-description="the resulting transparent color will match the original color when over this background">0xffffffff</param>
    </page>
    <page name="Help" gui-text="Help">
      <label xml:space="preserve">
Adds transparency to selected elements while keeping the original color value.

By default, the new transparent color is matched against white (it will show the original color when overlaying a white background).
The background color can be changed on the Background tab.

If transparency cannot be reached, it will be set to the max possible value.
Setting "force transparency" will instead deliver the best matching color to ensure the transparency value.
      </label>
    </page>
  </param>
  <effect>
    <!--object-type>path</object-type-->
    <effects-menu>
      <submenu name="Color"/>
    </effects-menu>
  </effect>
  <script>
    <command location="inx" interpreter="python">transparentify_extension.py</command>
  </script>
</inkscape-extension>