Difference between revisions of "Collectors"

From Wiki
Jump to navigation Jump to search
m (removed global from \setupexternalfigures)
(5 intermediate revisions by one other user not shown)
Line 2: Line 2:
  
 
Collectors are an alternative to overlays that can be used to build-up composite objects.
 
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.
+
[[Layers]], on the other hand, are used to define whole pages.
 
See the [[manual:details.pdf| details]] manual for further explanations.
 
See the [[manual:details.pdf| details]] manual for further explanations.
  
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 24: Line 24:
 
         {\framed{4}}
 
         {\framed{4}}
  
\startTEXpage
+
\composedcollector{example}
        \composedcollector{example}
 
\stopTEXpage
 
  
 
\stoptext
 
\stoptext
Line 32: Line 30:
 
</td><td>
 
</td><td>
 
<context>
 
<context>
 +
\setupexternalfigures[location={local,default}]
 
\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 53:
  
 
\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 64: Line 63:
 
         {\framed{4}}
 
         {\framed{4}}
  
\startTEXpage
+
\composedcollector{example2}
        \composedcollector{example2}
 
\stopTEXpage
 
  
 
\stoptext
 
\stoptext
Line 72: Line 69:
 
</td><td>
 
</td><td>
 
<context>
 
<context>
 +
\setupexternalfigures[location={local,default}]
 
\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 89: Line 87:
 
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.
 +
 +
{{todo|We need more documentation and examples for this complicated subject.}}
 +
 +
[[Category:Graphics]] [[Category:Layers]]

Revision as of 11:49, 18 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}}

\composedcollector{example}

\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}}

\composedcollector{example2}

\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.


TODO: We need more documentation and examples for this complicated subject. (See: To-Do List)