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authormarha <marha@users.sourceforge.net>2011-03-25 15:37:13 +0000
committermarha <marha@users.sourceforge.net>2011-03-25 15:37:13 +0000
commit41a502478a2972358dec934d82ee401c61a5cd36 (patch)
tree3fda8100e6da9b4a2863789e393016a750502067 /libXaw/spec/StripChart
parent81aeaf653a832c4054d9a40b1cc796911521a739 (diff)
parent272e57235cd60a2e65ac8258d96a02eb3939b687 (diff)
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-.\" $Xorg: StripChart,v 1.3 2000/08/17 19:42:28 cpqbld Exp $
-.NH 2
-StripChart Widget
-.XS
- StripChart Widget
-.XE
-.IN "StripChart widget" "" "@DEF@"
-.Ds 0
-.TA 2.0i
-.ta 2.0i
-.sp
-Application Header file <Xaw/StripChart.h>
-.IN "StripChart.h" ""
-Class Header file <Xaw/StripCharP.h>
-.IN "StripCharP.h" ""
-Class stripChartWidgetClass
-.IN "stripChartWidgetClass" ""
-Class Name StripChart
-.IN "StripChart widget" "class name"
-Superclass Simple
-.sp
-.De
-.LP
-The StripChart widget is used to provide a roughly real
-time graphical chart of a single value. For example,
-it is used by the common client program \fBxload\fP
-to provide a graph of processor load. The StripChart
-reads data from an application, and updates the chart
-at the \fBupdate\fP interval specified.
-.NH 3
-Resources
-.LP
-When creating a StripChart widget instance, the following resources are
-retrieved from the argument list or from the resource database:
-.LP
-.IN "StripChart widget" "resources"
-.TS H
-expand;
-lw(1i) lw(1i) lw(1i) lw(.5i) lw(2i).
-_
-.sp 3p
-.TB
-Name Class Type Notes Default Value
-.sp 3p
-_
-.TH
-.R
-.sp 3p
-accelerators Accelerators AcceleratorTable NULL
-ancestorSensitive AncestorSensitive Boolean D True
-background Background Pixel XtDefaultBackground
-backgroundPixmap Pixmap Pixmap XtUnspecifiedPixmap
-borderColor BorderColor Pixel XtDefaultForeground
-borderPixmap Pixmap Pixmap XtUnspecifiedPixmap
-borderWidth BorderWidth Dimension 1
-colormap Colormap Colormap Parent's Colormap
-cursor Cursor Cursor None
-cursorName Cursor String NULL
-depth Depth int C Parent's Depth
-destroyCallback Callback XtCallbackList NULL
-foreground Foreground Pixel XtDefaultForeground
-getValue Callback XtCallbackList NULL
-height Height Dimension 120
-highlight Foreground Pixel XtDefaultForeground
-insensitiveBorder Insensitive Pixmap GreyPixmap
-international International Boolean C False
-jumpScroll JumpScroll int A half the width of the widget
-mappedWhenManaged MappedWhenManaged Boolean True
-minScale Scale int 1
-pointerColor Foreground Pixel XtDefaultForeground
-pointerColorBackground Background Pixel XtDefaultBackground
-screen Screen Pointer R Parent's Screen
-sensitive Sensitive Boolean True
-translations Translations TranslationTable NULL
-update Interval int 10
-width Width Dimension 120
-x Position Position 0
-y Position Position 0
-.sp 3p
-_
-.TE
-.Ac
-.As
-.Bg
-.Gp
-.Bc
-.Bp
-.Bw
-.Cm
-.Cu
-.Cn
-.Dp
-.Dc
-.IP \fBforeground\fP 1.5i
-A pixel value which indexes the widget's colormap to derive the color
-that will be used to draw the graph.
-.IP \fBgetValue\fP 1.5i
-A list of callback functions to call every \fBupdate\fP seconds.
-This list should contain one function, which returns the
-value to be graphed by the StripChart widget. The following
-section describes the procedural interface. Behavior when this list has
-more than one function is undefined.
-.Hw
-.IP \fBhighlight\fP 1.5i
-A pixel value which indexes the widget's colormap to derive the color
-that will be used to draw the scale lines on the graph.
-.Ib
-.Ix
-.IP \fBjumpScroll\fP 1.5i
-When the graph reaches the right edge of the window it must be
-scrolled to the left. This resource specifies the number of pixels
-it will jump. Smooth scrolling can be achieved by setting this resource
-to 1.
-.Mm
-.IP \fBminScale\fP 1.5i
-The minimum scale for the graph. The number of divisions on the graph
-will always be greater than or equal to this value.
-.Pf
-.Pb
-.Sc
-.Se
-.Tr
-.IP \fBupdate\fP
-The number of seconds between graph updates. Each update is
-represented on the graph as a 1 pixel wide line. Every \fBupdate\fP seconds
-the \fBgetValue\fP procedure will be used to get a new graph point,
-and this point will be added to the right end of the StripChart.
-.Xy
-.NH 3
-Getting the StripChart Value
-.IN "StripChart widget" "getting the value"
-.LP
-The StripChart widget will call the application routine passed to it
-as the \fBgetValue\fP callback function every \fBupdate\fP seconds to
-obtain another point for the StripChart graph.
-.LP
-The calling interface for the \fBgetValue\fP callback is:
-.IN "StripChart widget" "getValue callback" "@DEF@"
-.FD 0
-void (*\fIgetValueProc\fP)(\fIw\fP, \fIclient_data\fP, \fIvalue\fP)
-.br
- Widget \fIw\fP;
-.br
- XtPointer \fIclient_data\fP;
-.br
- XtPointer \fIvalue\fP; /* double * */
-.FN
-.IP \fIw\fP 1i
-Specifies the StripChart widget.
-.IP \fIclient_data\fP 1i
-Specifies the client data.
-.IP \fIvalue\fP 1i
-Returns a pointer to a double. The application should set the address
-pointed to by this argument to a double containing the value to be
-graphed on the StripChart.
-.LP
-This function is used by the StripChart to call an application routine.
-The routine will pass the value to be graphed back to the the StripChart
-in the \fBvalue\fP field of this routine.
-