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Diffstat (limited to 'doc/context/sources/general/manuals/workflows/workflows-injectors.tex')
-rw-r--r-- | doc/context/sources/general/manuals/workflows/workflows-injectors.tex | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/doc/context/sources/general/manuals/workflows/workflows-injectors.tex b/doc/context/sources/general/manuals/workflows/workflows-injectors.tex new file mode 100644 index 000000000..d2f837d82 --- /dev/null +++ b/doc/context/sources/general/manuals/workflows/workflows-injectors.tex @@ -0,0 +1,86 @@ +% language=uk + +\environment workflows-style + +\startcomponent workflows-injectors + +\startchapter[title={Injectors}] + +When you have no control over the source but need to manually tweak some aspects +of the typesetting, like an occasional page break of column switch, you can use +the injector mechanism. This mechanism is part of list and register building but +can also be used elsewhere. + +\startbuffer[one] +\startmixedcolumns[balance=yes] + \dotestinjector{test}line 1 \par + \dotestinjector{test}line 2 \par + \dotestinjector{test}line 3 \par + \dotestinjector{test}line 4 \par + \dotestinjector{test}line 5 +\stopmixedcolumns +\stopbuffer + +\startbuffer[two] +\startmixedcolumns[balance=yes] + \dotestinjector{test}line 1 \par + \dotestinjector{test}line 2 \par + \dotestinjector{test}line 3 \par + \dotestinjector{test}line 4 \par + \dotestinjector{test}line 5 +\stopmixedcolumns +\stopbuffer + +We have two buffers: + +\typebuffer[one] + +and + +\typebuffer[two] + +When typeset these come out as: + +\blank \startpacked \bf \getbuffer[one] \stoppacked \blank + +and + +\blank \startpacked \bf \getbuffer[two] \stoppacked \blank + +We can enable (and show) the injectors with: + +\startbuffer +\doactivateinjector{test} \showinjector +\stopbuffer + +\typebuffer \getbuffer + +Now we get: + +\blank \startpacked \bf \getbuffer[one] \stoppacked \blank + +and + +\blank \startpacked \bf \getbuffer[two] \stoppacked \blank + +The small numbers are injector points. These will of course change when we add +more in|-|between. Let's add actions to some of the injection points: + +\startbuffer +\setinjector[test][13][{\column}] +\setinjector[test][17][{\column}] +\stopbuffer + +\typebuffer \getbuffer + +As expected we now get column breaks: + +\blank \startpacked \bf \getbuffer[one] \stoppacked \blank + +and + +\blank \startpacked \bf \getbuffer[two] \stoppacked \blank + +\stopchapter + +\stopcomponent |