Difference between revisions of "Collectors"

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Line 9: Line 9:
 
Adding labels to a figure.
 
Adding labels to a figure.
  
 +
<table><tr valign="top"><td>
 
<texcode>
 
<texcode>
 
\starttext                                                                             
 
\starttext                                                                             
Line 29: Line 30:
 
\stoptext
 
\stoptext
 
</texcode>
 
</texcode>
 
+
</td><td>
 
<context>
 
<context>
 
\definecollector[example]
 
\definecollector[example]
Line 44: Line 45:
 
\composedcollector{example}
 
\composedcollector{example}
 
</context>
 
</context>
 +
</td></tr></table>
  
 
There is no confusion if the added text is placed within the first object. However,
 
There is no confusion if the added text is placed within the first object. However,
  
 +
<table><tr valign="top"><td>
 
<texcode>
 
<texcode>
 
\starttext                                                                             
 
\starttext                                                                             
Line 67: Line 70:
 
\stoptext
 
\stoptext
 
</texcode>
 
</texcode>
 
+
</td><td>
 
<context>
 
<context>
 
\definecollector[example2]
 
\definecollector[example2]
Line 82: Line 85:
 
\composedcollector{example2}
 
\composedcollector{example2}
 
</context>
 
</context>
 +
</td></tr></table>
  
 
Notice that the size of the collected object grows as text is added.
 
Notice that the size of the collected object grows as text is added.
 
As a consequence, the positions of the corners get redefined as the bounding box grows.
 
As a consequence, the positions of the corners get redefined as the bounding box grows.

Revision as of 09:34, 16 January 2009

< Layout | Columns | Overlays | Logos | Layers >

Collectors are an alternative to overlays that can be used to build-up composite objects. Layers on the other hand, are used to define whole pages. See the details manual for further explanations.

Example

Adding labels to a figure.

\starttext                                                                             

\definecollector[example]
\setcollector [example] { \externalfigure[cow][width=4cm,frame=on] }
\setcollector [example] [corner={right,bottom},location={left,top}]
        {\framed{1}}
\setcollector [example] [corner={right,top},location={left,bottom}]
        {\framed{2}}
\setcollector [example] [corner={left,top},location={right,bottom}]
        {\framed{3}}
\setcollector [example] [corner={left,bottom},location={right,top}]
        {\framed{4}}

\startTEXpage
        \composedcollector{example}
\stopTEXpage

\stoptext

There is no confusion if the added text is placed within the first object. However,

\starttext                                                                             

\definecollector[example2]
\setcollector [example2] { \externalfigure[cow][width=4cm,frame=on] }
\setcollector [example2] [corner={right,bottom},location={right,bottom}]
        {\framed{1}}
\setcollector [example2] [corner={right,top},location={right,top}]
        {\framed{2}}
\setcollector [example2] [corner={left,top},location={left,top}]
        {\framed{3}}
\setcollector [example2] [corner={left,bottom},location={left,bottom}]
        {\framed{4}}

\startTEXpage
        \composedcollector{example2}
\stopTEXpage

\stoptext

Notice that the size of the collected object grows as text is added. As a consequence, the positions of the corners get redefined as the bounding box grows.