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Properties of @code{text} objects (@pxref{XREFtext,,text}):

@subsubheading Categories:

@ref{XREFtextcategoryCallbackExecution, , @w{Callback Execution}}@: | @ref{XREFtextcategoryCreation/Deletion, , @w{Creation/Deletion}}@: | @ref{XREFtextcategoryDisplay, , @w{Display}}@: | @ref{XREFtextcategoryMouseInteraction, , @w{Mouse Interaction}}@: | @ref{XREFtextcategoryObjectIdentification, , @w{Object Identification}}@: | @ref{XREFtextcategoryObjectPosition, , @w{Object Position}}@: | @ref{XREFtextcategoryParent/Children, , @w{Parent/Children}}@: | @ref{XREFtextcategoryTextAppearance, , @w{Text Appearance}}@: | @ref{XREFtextcategoryTextBoxAppearance, , @w{Text Box Appearance}}@: 

@anchor{XREFtextcategoryCallbackExecution}
@subsubheading Callback Execution

@table @asis

@anchor{XREFtextbusyaction}
@prindex text busyaction
@item @code{busyaction}: @qcode{"cancel"} | @{@qcode{"queue"}@}
Define how Octave handles the execution of this object's callback properties when it is unable to interrupt another object's executing callback.  This is only relevant when the currently executing callback object has its @code{interruptible} property set to @qcode{"off"}.  The @code{busyaction} property of the interrupting callback object indicates whether the interrupting callback is queued (@qcode{"queue"} (default)) or discarded (@qcode{"cancel"}).
@xref{Callbacks, , @w{Callbacks section}}.


@anchor{XREFtextinterruptible}
@prindex text interruptible
@item @code{interruptible}: @qcode{"off"} | @{@qcode{"on"}@}
Specify whether this object's callback functions may be interrupted by other callbacks.  By default @code{interruptible} is @qcode{"on"} and callbacks that make use of @code{drawnow}, @code{figure}, @code{waitfor}, @code{getframe} or @code{pause} functions are eventually interrupted.
@xref{Callbacks, , @w{Callbacks section}}.

@end table

@anchor{XREFtextcategoryCreation/Deletion}
@subsubheading Creation/Deletion

@table @asis

@anchor{XREFtextbeingdeleted}
@prindex text beingdeleted
@item @code{beingdeleted}: @{@qcode{"off"}@} | @qcode{"on"}
Property indicating that a function has initiated deletion of the object.  @code{beingdeleted} is set to true until the object no longer exists.


@anchor{XREFtextcreatefcn}
@prindex text createfcn
@item @code{createfcn}: string | function handle, def. @code{[](0x0)}
Callback function executed immediately after text has been created.  Function is set by using default property on root object, e.g., @code{set (groot, "defaulttextcreatefcn", 'disp ("text created!")')}.

For information on how to write graphics listener functions see @ref{Callbacks, , @w{Callbacks section}}.


@anchor{XREFtextdeletefcn}
@prindex text deletefcn
@item @code{deletefcn}: string | function handle, def. @code{[](0x0)}
Callback function executed immediately before text is deleted.

For information on how to write graphics listener functions see @ref{Callbacks, , @w{Callbacks section}}.

@end table

@anchor{XREFtextcategoryDisplay}
@subsubheading Display

@table @asis

@anchor{XREFtextclipping}
@prindex text clipping
@item @code{clipping}: @qcode{"off"} | @{@qcode{"on"}@}
If @code{clipping} is @qcode{"on"}, the text is clipped in its parent axes limits.


@anchor{XREFtextvisible}
@prindex text visible
@item @code{visible}: @qcode{"off"} | @{@qcode{"on"}@}
If @code{visible} is @qcode{"off"}, the text is not rendered on screen.

@end table

@anchor{XREFtextcategoryMouseInteraction}
@subsubheading Mouse Interaction

@table @asis

@anchor{XREFtextbuttondownfcn}
@prindex text buttondownfcn
@item @code{buttondownfcn}: string | function handle, def. @code{[](0x0)}
For information on how to write graphics listener functions see @ref{Callbacks, , @w{Callbacks section}}.


@anchor{XREFtextcontextmenu}
@prindex text contextmenu
@item @code{contextmenu}: graphics handle, def. @code{[](0x0)}
Graphics handle of the uicontextmenu object that is currently associated to this text object.


@anchor{XREFtexthittest}
@prindex text hittest
@item @code{hittest}: @qcode{"off"} | @{@qcode{"on"}@}
Specify whether text processes mouse events or passes them to ancestors of the object.  When enabled, the object may respond to mouse clicks by evaluating the @qcode{"buttondownfcn"}, showing the uicontextmenu, and eventually becoming the root @qcode{"currentobject"}.  This property is only relevant when the object can accept mouse clicks which is determined by the @qcode{"pickableparts"} property.  @xref{XREFtextpickableparts, , @w{pickableparts property}}.


@anchor{XREFtextpickableparts}
@prindex text pickableparts
@item @code{pickableparts}: @qcode{"all"} | @qcode{"none"} | @{@qcode{"visible"}@}
Specify whether text will accept mouse clicks.  By default, @code{pickableparts} is @qcode{"visible"} and only visible parts of the text or its children may react to mouse clicks.  When @code{pickableparts} is @qcode{"all"} both visible and invisible parts (or children) may react to mouse clicks.  When @code{pickableparts} is @qcode{"none"} mouse clicks on the object are ignored and transmitted to any objects underneath this one.  When an object is configured to accept mouse clicks the @qcode{"hittest"} property will determine how they are processed.  @xref{XREFtexthittest, , @w{hittest property}}.


@anchor{XREFtextselected}
@prindex text selected
@item @code{selected}: @{@qcode{"off"}@} | @qcode{"on"}
Property indicates whether this text is selected.


@anchor{XREFtextselectionhighlight}
@prindex text selectionhighlight
@item @code{selectionhighlight}: @qcode{"off"} | @{@qcode{"on"}@}
If @code{selectionhighlight} is @qcode{"on"}, then the text's selection state is visually highlighted.

@end table

@anchor{XREFtextcategoryObjectIdentification}
@subsubheading Object Identification

@table @asis

@anchor{XREFtexttag}
@prindex text tag
@item @code{tag}: string, def. @qcode{""}
A user-defined string to label the graphics object.


@anchor{XREFtexttype}
@prindex text type
@item @code{type} (read-only): string
Class name of the graphics object.  @code{type} is always @qcode{"text"}.


@anchor{XREFtextuserdata}
@prindex text userdata
@item @code{userdata}: Any Octave data, def. @code{[](0x0)}
User-defined data to associate with the graphics object.

@end table

@anchor{XREFtextcategoryObjectPosition}
@subsubheading Object Position

@table @asis

@anchor{XREFtextextent}
@prindex text extent
@item @code{extent} (read-only): four-element vector
Vector @code{[x0 y0 width height]} indicating the size and location of the text string.


@anchor{XREFtexthorizontalalignment}
@prindex text horizontalalignment
@item @code{horizontalalignment}: @qcode{"center"} | @{@qcode{"left"}@} | @qcode{"right"}
Specifies the horizontal location of the point set by the @ref{XREFtextposition, , @w{@qcode{"position"} property}} relative to the text.


@anchor{XREFtextposition}
@prindex text position
@item @code{position}: three-element vector, def. @code{[0   0   0]}
Vector @code{[X0 Y0 Z0]} where X0, Y0, and Z0 indicate the position of the text anchor as defined by @code{verticalalignment} and @code{horizontalalignment}.


@anchor{XREFtextrotation}
@prindex text rotation
@item @code{rotation}: scalar, def. @code{0}
The angle of rotation for the displayed text, measured in degrees.


@anchor{XREFtextunits}
@prindex text units
@item @code{units}: @qcode{"centimeters"} | @{@qcode{"data"}@} | @qcode{"inches"} | @qcode{"normalized"} | @qcode{"pixels"} | @qcode{"points"}
Sets the measurement unit or method applied to the @ref{XREFtextposition, , @qcode{"position"}} and @ref{XREFtextextent, , @qcode{"extent"}} properties.  The default option @qcode{"data"} uses the same units and limits as the data plotted in the figure.  The @qcode{"normalized"} option applies a unitless 0 to 1 scale to the limits along each axis of the displayed data.


@anchor{XREFtextverticalalignment}
@prindex text verticalalignment
@item @code{verticalalignment}: @qcode{"baseline"} | @qcode{"bottom"} | @qcode{"cap"} | @{@qcode{"middle"}@} | @qcode{"top"}
Specifies the vertical location of the point set by the @ref{XREFtextposition, , @w{@qcode{"position"} property}} relative to the text.  Note that @qcode{"top"} and @qcode{"bottom"} align to the edge of the text box while @qcode{"cap"} and @qcode{"baseline"} refer to the edges of the text itself.

@end table

@anchor{XREFtextcategoryParent/Children}
@subsubheading Parent/Children

@table @asis

@anchor{XREFtextchildren}
@prindex text children
@item @code{children} (read-only): vector of graphics handles, def. @code{[](0x0)}
text objects have no child objects.  @code{children} is unused.


@anchor{XREFtexthandlevisibility}
@prindex text handlevisibility
@item @code{handlevisibility}: @qcode{"callback"} | @qcode{"off"} | @{@qcode{"on"}@}
If @code{handlevisibility} is @qcode{"off"}, the text's handle is not visible in its parent's @qcode{"children"} property.


@anchor{XREFtextparent}
@prindex text parent
@item @code{parent}: graphics handle
Handle of the parent graphics object.

@end table

@anchor{XREFtextcategoryTextAppearance}
@subsubheading Text Appearance

@table @asis

@anchor{XREFtextcolor}
@prindex text color
@item @code{color}: colorspec, def. @code{[0   0   0]}
Color of the text.  @xref{Colors, ,colorspec}.


@anchor{XREFtextediting}
@prindex text editing
@item @code{editing}: @{@qcode{"off"}@} | @qcode{"on"}
Interactive text editing is not yet implemented for text objects.  @code{editing} is unused.


@anchor{XREFtextfontangle}
@prindex text fontangle
@item @code{fontangle}: @qcode{"italic"} | @{@qcode{"normal"}@}
Control whether the font is italic or normal.


@anchor{XREFtextfontname}
@prindex text fontname
@item @code{fontname}: string, def. @qcode{"*"}
Name of font used for text rendering.  When setting this property, the text rendering engine will search for a matching font in your system.  If none is found then text is rendered using a default sans serif font (same as the default @qcode{"*"} value).

Programming Note: On systems that don’t use FontConfig natively (all but Linux), the font cache is built when Octave is installed.  You will need to run @code{system ("fc-cache -fv")} manually after installing new fonts.


@anchor{XREFtextfontsize}
@prindex text fontsize
@item @code{fontsize}: scalar, def. @code{10}
Size of the font used for text rendering.  @xref{XREFtextfontunits, , fontunits property}.


@anchor{XREFtextfontsmoothing}
@prindex text fontsmoothing
@item @code{fontsmoothing}: @qcode{"off"} | @{@qcode{"on"}@}
Control whether anti-aliasing is used when rendering text.


@anchor{XREFtextfontunits}
@prindex text fontunits
@item @code{fontunits}: @qcode{"centimeters"} | @qcode{"inches"} | @qcode{"normalized"} | @qcode{"pixels"} | @{@qcode{"points"}@}
Units used to interpret the @qcode{"fontsize"} property.


@anchor{XREFtextfontweight}
@prindex text fontweight
@item @code{fontweight}: @qcode{"bold"} | @{@qcode{"normal"}@}
Control the variant of the base font used for text rendering.


@anchor{XREFtextinterpreter}
@prindex text interpreter
@item @code{interpreter}: @qcode{"latex"} | @qcode{"none"} | @{@qcode{"tex"}@}
Control the way the @qcode{"string"} property is interpreted.
@xref{Use of the "interpreter" Property, , @w{Use of the @qcode{"interpreter"} Property}}.


@anchor{XREFtextstring}
@prindex text string
@item @code{string}: string, def. @qcode{""}
The text object string content.

@end table

@anchor{XREFtextcategoryTextBoxAppearance}
@subsubheading Text Box Appearance

@table @asis

@anchor{XREFtextbackgroundcolor}
@prindex text backgroundcolor
@item @code{backgroundcolor}: colorspec, def. @qcode{"none"}
Color of the background area.  @xref{Colors, , colorspec}.


@anchor{XREFtextedgecolor}
@prindex text edgecolor
@item @code{edgecolor}: colorspec, def. @qcode{"none"}
Color of the outline of the background area.  @xref{Colors, , colorspec}.


@anchor{XREFtextlinestyle}
@prindex text linestyle
@item @code{linestyle}: @{@qcode{"-"}@} | @qcode{"--"} | @qcode{"-."} | @qcode{":"} | @qcode{"none"}
Style of the text box outline.  @xref{Line Styles}.


@anchor{XREFtextlinewidth}
@prindex text linewidth
@item @code{linewidth}: scalar, def. @code{0.5000}
Width of the text box outline.


@anchor{XREFtextmargin}
@prindex text margin
@item @code{margin}: scalar, def. @code{3}
Margins between the borders of the background area and the texts.  The value is currently interpreted as pixels, regardless of the @qcode{"fontunits"} property.

@end table