View source for Template:ImageTG

<includeonly><!--
** First store values for 100% scaling (note: both parts of #if: are evaluated, so vardefine can never be inside an expression!)  **
-->{{
#vardefine:tgpx1|<!--
-->{{#ifexpr:{{#pos:{{{1}}}|_10x.}} | 589}}<!--
-->{{#ifexpr:{{#pos:{{{1}}}|_20x.}} | 589}}<!--
-->{{#ifexpr:{{#pos:{{{1}}}|_40x.}} | 595}}<!--
-->{{#ifexpr:{{#pos:{{{1}}}|_63x.}} | 354}}<!--
-->{{#ifexpr:{{#pos:{{{1}}}|_100x.}}| 295}}<!--
-->}}{{
#vardefine:tglabel|<!--
-->{{#ifexpr:{{#pos:{{{1}}}|_10x.}} | 200 µm}}<!--
-->{{#ifexpr:{{#pos:{{{1}}}|_20x.}} | 100 µm}}<!--
-->{{#ifexpr:{{#pos:{{{1}}}|_40x.}} |  50 µm}}<!--
-->{{#ifexpr:{{#pos:{{{1}}}|_63x.}} |  20 µm}}<!--
-->{{#ifexpr:{{#pos:{{{1}}}|_100x.}}|  10 µm}}<!--
-->}}<!--
** The pixel values above are for full size display and must be corrected for images scaling **
-->{{
#vardefine:tgpx2| 
 {{#expr: {{#var:tgpx1}} * {{
    #if: {{#pos: {{{width|250px}}} |px}}
    |<!--then: is px-number, strip px ####NOT YET DONE!### and calculate ratio:--> {{{width}}} / {{#mediawidth: {{{1}}} }}
    |<!--else: percent-number: -->  {{{width|100}}} / 100
  <!--(endif)-->}} 
 <!--(end expr)-->}} 
<!--(end vardefine)-->}}<!--
** Now insert into image template: **
-->{{Image | {{{1|Please enter the image filename as 1st parameter!}}} AFTERIMAGE 1"""{{#var:tgpx1}}""" 2"""{{#var:tgpx2}}"""
| width = {{{width|250px}}}<!--
** pass-through up to 6 further parameters (thumb, left, upright, etc. plus caption; first unnamed parameter is always the image file): **
-->{{
#if: {{{2|}}} | {{!}}{{{2}}}
}}{{
#if: {{{3|}}} | {{!}}{{{3}}}
}}{{
#if: {{{4|}}} | {{!}}{{{4}}}
}}{{
#if: {{{5|}}} | {{!}}{{{5}}}
}}{{
#if: {{{6|}}} | {{!}}{{{6}}}
}}{{
#if: {{{7|}}} | {{!}}{{{7}}}
}}
| BEFORESCALEBAR {{Scalebar | {{#var:tgpx2}}px |{{#var:tglabel}} }} BEFORE CAPTION {{{caption|}}} AFTERCAPTION
}}</includeonly><noinclude>

==Description==

This template is a specialized template to render a specific kind of microscopic photos by T. Gräfenhan. The major function of this template is to calculate a scale bar correctly for the magnification factors signaled by a special code ("_63x.") in the file name. Other images may have different naming conventions; the template may then be copied to a different name and the code adjusted. The images have a maximum size of 2560px if uncropped, but may be cropped. 

==Parameters==

* width: either number + px for fixed width in pixel, or number, interpreted as percentage relative to original size.
* caption: You must pass the caption in a named parameter!
* a sequence of unnamed parameters, covering the standard image functionality (thumb, left, caption, etc.).

==Usage==
* <nowiki>{{ImageTG|File:x.png|caption=Your caption text here|width=250px}}</nowiki>
*: Fully equivalent to: <nowiki>[[File:x.png|250px|Your caption text here]]</nowiki>
* <nowiki>{{ImageTG|File:x.png|thumb|left|width=15|upright|caption=Your caption text}}</nowiki>
*: This scales the image to 15% of original size.
</noinclude>

==Dependendencies==

Depends on [http://www.mediawiki.org/wiki/Extension:StringFunctions Extension:StringFunctions], [http://www.mediawiki.org/wiki/Extension:MediaFunctions Extension:MediaFunctions], [http://www.mediawiki.org/wiki/Extension:Variables Extension:Variables].