Difference between revisions of "Collectors"

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Line 14: Line 14:
  
 
\definecollector[example]
 
\definecollector[example]
\setcollector [example] { \externalfigure[cow][width=4cm,frame=on] }
+
\setcollector [example] {\externalfigure[cow][width=4cm,frame=on]}
 
\setcollector [example] [corner={right,bottom},location={left,top}]
 
\setcollector [example] [corner={right,bottom},location={left,top}]
 
         {\framed{1}}
 
         {\framed{1}}
Line 33: Line 33:
 
<context>
 
<context>
 
\definecollector[example]
 
\definecollector[example]
\setcollector [example] { \externalfigure[cow][width=4cm,frame=on] }
+
\setcollector [example] {\externalfigure[cow][width=4cm,frame=on]}
 
\setcollector [example] [corner={right,bottom},location={left,top}]
 
\setcollector [example] [corner={right,bottom},location={left,top}]
 
         {\framed{1}}
 
         {\framed{1}}
Line 54: Line 54:
  
 
\definecollector[example2]
 
\definecollector[example2]
\setcollector [example2] { \externalfigure[cow][width=4cm,frame=on] }
+
\setcollector [example2] {\externalfigure[cow][width=4cm,frame=on]}
 
\setcollector [example2] [corner={right,bottom},location={right,bottom}]
 
\setcollector [example2] [corner={right,bottom},location={right,bottom}]
 
         {\framed{1}}
 
         {\framed{1}}
Line 73: Line 73:
 
<context>
 
<context>
 
\definecollector[example2]
 
\definecollector[example2]
\setcollector [example2] { \externalfigure[cow][width=4cm,frame=on] }
+
\setcollector [example2] {\externalfigure[cow][width=4cm,frame=on]}
 
\setcollector [example2] [corner={right,bottom},location={right,bottom}]
 
\setcollector [example2] [corner={right,bottom},location={right,bottom}]
 
         {\framed{1}}
 
         {\framed{1}}

Revision as of 09:42, 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.