466 lines
18 KiB
Groff
466 lines
18 KiB
Groff
.de It
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.br
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.ie \\n(.$>=3 .ne \\$3
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.el .ne 3
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.IP "\\$1" \\$2
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..
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.TH cdk_scale 3 "24 April 1997"
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.SH NAME
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newCDKScale, activateCDKScale, injectCDKScale, setCDKScale,
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setCDKScaleLowHigh, getCDKScaleLowValue, getCDKScaleHighValue,
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setCDKScaleValue, getCDKScaleValue, setCDKScaleBox, getCDKScaleBox,
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setCDKScaleULChar, setCDKScaleURChar,
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setCDKScaleLLChar, setCDKScaleLRChar,
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setCDKScaleVerticalChar, setCDKScaleHorizontalChar,
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setCDKScaleBoxAttribute,
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setCDKScaleBackgroundColor,
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drawCDKScale, eraseCDKScale, destroyCDKScale,
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setCDKScalePreProcess, setCDKScalePostProcess
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\- Creates a managed curses scale widget.
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.SH SYNOPSIS
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.LP
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.B cc
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.RI "[ " "flag" " \|.\|.\|. ] " "file" " \|.\|.\|."
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.B \-lcdk
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.RI "[ " "library" " \|.\|.\|. ]"
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.LP
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#include <cdk.h>
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.LP
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.BI "CDKSCALE *newCDKScale (CDKSCREEN *" "cdkscreen",
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.BI "int " "xpos",
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.BI "int " "ypos",
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.BI "char *" "title",
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.BI "char *" "label",
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.BI "chtype " "fieldAttribute",
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.BI "int " "fieldWidth",
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.BI "int " "currentValue",
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.BI "int " "lowValue",
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.BI "int " "highValue",
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.BI "int " "increment",
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.BI "int " "fastIncrement",
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.BI "boolean " "box",
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.BI "boolean " "shadow");
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.LP
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.BI "int activateCDKScale (CDKSCALE *" "scale",
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.BI "chtype *" "actions");
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.LP
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.BI "int injectCDKScale (CDKSCALE *" "scale",
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.BI "chtype " "input");
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.LP
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.BI "void setCDKScale (CDKSCALE *" "scale",
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.BI "int " "lowValue",
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.BI "int " "highValue",
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.BI "int " "currentValue",
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.BI "boolean " "box");
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.LP
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.BI "void setCDKScaleLowHigh (CDKSCALE *" "scale",
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.BI "int " "low",
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.BI "int " "high");
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.LP
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.BI "int getCDKScaleLowValue ((CDKSCALE *" "scale");
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.LP
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.BI "int getCDKScaleHighValue ((CDKSCALE *" "scale");
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.LP
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.BI "void setCDKScaleValue (CDKSCALE *" "scale",
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.BI "int " "value");
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.LP
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.BI "int getCDKScaleValue (CDKSCALE *" "scale");
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.LP
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.BI "void setCDKScaleBox (CDKSCALE *" "scale",
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.BI "boolean " "box");
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.LP
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.BI "boolean getCDKScaleBox (CDKSCALE *" "scale");
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.LP
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.BI "void setCDKScaleULChar (CDKSCALE *", "scale",
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.BI "chtype " "character");
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.LP
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.BI "void setCDKScaleURChar (CDKSCALE *", "scale",
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.BI "chtype " "character");
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.LP
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.BI "void setCDKScaleLLChar (CDKSCALE *", "scale",
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.BI "chtype " "character");
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.LP
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.BI "void setCDKScaleLRChar (CDKSCALE *", "scale",
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.BI "chtype " "character");
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.LP
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.BI "void setCDKScaleVerticalChar (CDKSCALE *", "scale",
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.BI "chtype " "character");
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.LP
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.BI "void setCDKScaleHorizontalChar (CDKSCALE *", "scale",
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.BI "chtype " "character");
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.LP
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.BI "void setCDKScaleBoxAttribute (CDKSCALE *", "scale",
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.BI "chtype " "character");
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.LP
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.BI "void setCDKScaleBackgroundColor (CDKSCALE *", "scale",
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.BI "char * " "color");
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.LP
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.BI "void moveCDKScale (CDKSCALE *" "scale",
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.BI "int " "box",
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.BI "int " "box",
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.BI "boolean " "relative",
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.BI "boolean " "refresh");
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.LP
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.BI "void positionCDKScale (CDKSCALE *" "scale");
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.LP
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.BI "void drawCDKScale (CDKSCALE *" "scale",
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.BI "boolean " "box");
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.LP
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.BI "void eraseCDKScale (CDKSCALE *" "scale");
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.LP
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.BI "void destroyCDKScale (CDKSCALE *" "scale");
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.LP
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.BI "void setCDKScalePreProcess (CDKSCALE *" "scale",
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.BI "PROCESSFN " "callback",
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.BI "void * " "data");
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.LP
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.BI "void setCDKScalePostProcess (CDKSCALE *" "scale",
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.BI "PROCESSFN " "callback",
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.BI "void * " "data");
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.LP
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.BI "void bindCDKObject (EObjectType " "widgetType",
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.BI "void *" "object",
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.BI "chtype " "key",
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.BI "BINDFN " "function",
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.BI "void *" "data");
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.SH DESCRIPTION
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The Cdk scale widget creates a scale box with a label and a scale field. The
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following are functions which create or manipulate the Cdk scale box widget.
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.SH AVAILABLE FUNCTIONS
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CDKSCALE *newCDKScale (CDKSCREEN *\f2screen\f1, int \f2xpos\f1, int \f2ypos\f1, char *\f2title\f1, char *\f2label\f1, chtype \f2fieldAttribute\f1, chtype \f2fillerCharacter\f1, EDisplayType \f2displayType\f1, int \f2fieldWidth\f1, int \f2minimumLength\f1, int \f2maximumLength\f1, boolean \f2box\f1, boolean \f2shadow\f1);
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.RS 3
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This function creates a pointer to a scale widget. The \f2screen\f1 parameter
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is the screen you wish this widget to be placed in. The parameter \f2xpos\f1
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controls the placement of the object along the horizontal axis. This parameter
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can accept an integer value or one of the pre-defined values of \f4LEFT\f1,
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\f4RIGHT\f1, and \f4CENTER\f1. The parameter \f2ypos\f1 controls the placement
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of the object along the vertical axis. This parameter can accept an integer
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value or one of the pre-defined values of \f4TOP\f1, \f4BOTTOM\f1, and \f4CENTER\f1.
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The \f2title\f1 parameter is the string which will be displayed at the top of the
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widget. The title can be more than one line; just provide a carriage return
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character at the line break. The \f2label\f1 parameter is the string which will be
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displayed in the label of the scale field. The \f2fieldAttribute\f1 is the
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attribute of the characters displayed in the field.
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The parameter \f2fieldWidth\f1 controls the width of the widget. If you
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provide a value of zero the widget will be created with the full width of
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the screen. If you provide a negative value, the widget will be created
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the full width minus the value provided. The parameter \f2currentValue\f1
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is the value of the scale field when the widget is activated. The parameters
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\f2lowValue\f1 and \f2highValue\f1 are the low and high values of the widget
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respectively. The parameter \f2increment\f1 is the regular increment value
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while \f2fastIncrement\f1 is the accelerated increment value. The \f2box\f1
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parameter states whether the widget will be drawn with a box around it or not.
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The \f2shadow\f1 parameter accepts a boolean value to turn the shadow on or
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off around this widget. If the widget could not be created then a \f4NULL\f1
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pointer is returned.
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.RE
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int activateCDKScale (CDKSCALE \f2scale\f1, chtype *\f2actions\f1);
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.RS 3
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This function activates the scale widget and lets the user interact with the
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widget. The parameter \f2scale\f1 is a pointer to a non-NULL scale widget.
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If the \f2actions\f1 parameter is passed with a non-NULL value, the characters
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in the array will be injected into the widget. To activate the widget
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interactively pass in a \f4NULL\f1 pointer for \f2actions\f1. If the character entered
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into this widget is \f4RETURN\f1 or \f4TAB\f1 then this function will return a
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value from the low value to the high value. It will also set the structure
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member \f4exitType\f1 to \f4vNORMAL\f1. If the character entered into this
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widget was \f4ESCAPE\f1 then the widget will return a value of -1 and the
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structure member \f4exitType\f1 will be set to \f4vESCAPE_HIT\f1.
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.RE
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int injectCDKScale (CDKSCALE *\f2scale\f1, chtype \f2character\f1);
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.RS 3
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This function injects a single character into the widget. The parameter
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\f2scale\f1 is a pointer to a non-NULL scale widget. The parameter
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\f2character\f1 is the character to inject into the widget. If the character
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injected into this widget was \f4RETURN\f1 then the character injected into
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this widget is \f4RETURN\f1 or \f4TAB\f1 then this function will return a
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value from the low value to the high value. It will also set the structure
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member \f4exitType\f1 to \f4vNORMAL\f1. If the character entered into this
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widget was \f4ESCAPE\f1 then the widget will return a value of -1 and the
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structure member \f4exitType\f1 will be set to \f4vESCAPE_HIT\f1. Any other
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character injected into the widget will set the structure member \f4exitType\f1
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to \f4vEARLY_EXIT\f1 and the function will return -1.
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.RE
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void setCDKScale (CDKSCALE *\f2scale\f1, int \f2value\f1, int \f2minimumLength\f1, int \f2maximumLength\f1, boolean \f2box\f1);
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.RS 3
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This function lets the programmer modify certain elements of an already
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defined scale widget. The parameter names correspond to the same parameter
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names listed in the \f4newCDKScale\f1 function.
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.RE
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void setCDKScaleLowHigh (CDKSCALE *\f2scale\f1, int \f2lowValue\f1, int \f2highValue\f1);
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.RS 3
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This sets the low and high values of the widget.
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.RE
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int getCDKScaleLowValue (CDKSCALE *\f2scale\f1);
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.RS 3
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This returns the low value of the scale widget.
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.RE
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int getCDKScaleHighValue (CDKSCALE *\f2scale\f1);
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.RS 3
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This returns the high value of the scale widget.
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.RE
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void setCDKScaleValue (CDKSCALE *\f2scale\f1, int \f2value\f1);
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.RS 3
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This sets the current value of the widget.
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.RE
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int getCDKScaleValue (CDKSCALE *\f2scale\f1);
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.RS 3
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This returns the current value of the widget.
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.RE
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void setCDKScaleBox (CDKSCALE *\f2scale\f1, boolean \f2boxWidget\f1);
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.RS 3
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This sets whether or not the widget will be draw with a box around it.
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.RE
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boolean getCDKScaleBox (CDKSCALE *\f2scale\f1);
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.RS 3
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This returns whether or not the widget will be drawn with a box around it.
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.RE
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void setCDKScaleULChar (CDKSCALE *\f2scale\f1, chtype \f2character\f1);
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.RS 3
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This function sets the upper left hand corner of the widgets box to
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the given character.
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.RE
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void setCDKScaleURChar (CDKSCALE *\f2scale\f1, chtype \f2character\f1);
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.RS 3
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This function sets the upper right hand corner of the widgets box to
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the given character.
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.RE
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void setCDKScaleLLChar (CDKSCALE *\f2scale\f1, chtype \f2character\f1);
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.RS 3
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This function sets the lower left hand corner of the widgets box to
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the given character.
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.RE
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void setCDKScaleLRChar (CDKSCALE *\f2scale\f1, chtype \f2character\f1);
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.RS 3
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This function sets the lower right hand corner of the widgets box to
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the given character.
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.RE
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void setCDKScaleVerticalChar (CDKSCALE *\f2scale\f1, chtype \f2character\f1);
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.RS 3
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This function sets the vertical drawing character for the box to
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the given character.
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.RE
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void setCDKScaleHorizontalChar (CDKSCALE *\f2scale\f1, chtype \f2character\f1);
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.RS 3
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This function sets the horizontal drawing character for the box to
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the given character.
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.RE
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void setCDKScaleBoxAttribute (CDKSCALE *\f2scale\f1, chtype \f2attribute\f1);
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.RS 3
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This function sets the attribute of the box.
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.RE
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void setCDKScaleBackgroundColor (CDKSCALE *\f2scale\f1, char *\f2color\f1);
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.RS 3
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This sets the background color of the widget. The parameter \f2color\f1
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is in the format of the Cdk format strings. To get more information look
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at the \f4cdk_display\f1 manual page.
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.RE
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void moveCDKScale (CDKSCALE *\f2scale\f1, int \f2xpos\f1, int \f2ypos\f1, boolean \f2relative\f1, boolean \f2refresh\f1);
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.RS 3
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This function moves the given widget to the given position. The parameters
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\f2xpos\f1 and \f2ypos\f1 is the new position of the widget. The parameter
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\f2xpos\f1 can accept an integer value or one of the pre-defined values of
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\f4TOP\f1, \f4BOTTOM\f1, and \f4CENTER\f1. The parameter \f2ypos\f1 can
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accept an integer value or one of the pre-defined values of \f4LEFT\f1,
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\f4RIGHT\f1, and \f4CENTER\f1. The parameter \f2relative\f1 states whether
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the \f2xpos\f1/\f2ypos\f1 pair is a relative move or an absolute move. For
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example if \f2xpos\f1 = 1 and \f2ypos\f1 = 2 and \f2relative\f1 = \f2TRUE\f1,
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then the widget would move one row down and two columns right. If the value
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of \f2relative\f1 was \f2FALSE\f1 then the widget would move to the position
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(1,2). Do not use the values of \f4TOP\f1, \f4BOTTOM\f1, \f4LEFT\f1,
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\f4RIGHT\f1, or \f4CENTER\f1 when \f2relative\f1 = \f4TRUE\f1. (wierd things
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may happen). The final parameter \f2refresh\f1 is a boolean value which
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states whether the widget will get refreshed after the move or not.
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.RE
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void positionCDKScale (CDKSCALE *\f2scale\f1);
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.RS 3
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This function allows the user to move the widget around the screen via the
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cursor/keypad keys. The following key bindings can be used to move the
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widget around the screen.
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.LP
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.nf
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\f4Key Bindings\f1
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.RS 3
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\f2Key Action\f1
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Up Arrow Moves the widget up one line.
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Down Arrow Moves the widget down one line.
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Left Arrow Moves the widget left one column
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Right Arrow Moves the widget right one column
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Keypad-1 Moves the widget down one line
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and left one column.
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Keypad-2 Moves the widget down one line.
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Keypad-3 Moves the widget down one line
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and right one column.
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Keypad-4 Moves the widget left one column
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Keypad-5 Centers the widget both vertically
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and horizontally.
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Keypad-6 Moves the widget right one column
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Keypad-7 Moves the widget up one line
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and left one column.
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Keypad-8 Moves the widget up one line.
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Keypad-9 Moves the widget up one line
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and right one column.
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t Moves the widget to the top of the screen.
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b Moves the widget to the bottom of the screen.
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l Moves the widget to the left of the screen.
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r Moves the widget to the right of the screen.
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c Centers the widget between the left and
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right of the window.
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C Centers the widget between the top and
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bottom of the window.
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Escape Returns the widget to it's original position.
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Return Exits the function and leaves the widget
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where it was.
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.fi
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.RE
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.RS 3
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.LP
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Keypad means that if the keyboard you are using has a keypad, then the
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Num-Lock light has to be on in order to use the keys as listed. (The
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numeric keys at the top of the keyboard will work as well.)
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.LP
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void drawCDKScale (CDKSCALE *\f2scale\f1, boolean \f2box\f1);
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.RS 3
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This function draws the scale widget on the screen. The \f2box\f1 option
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draws the widget with or without a box.
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.RE
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void eraseCDKScale (CDKSCALE *\f2scale\f1);
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.RS 3
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This function removes the widget from the screen. This does \f4NOT\f1 destroy
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the widget.
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.RE
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void destroyCDKScale (CDKSCALE *\f2scale\f1);
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.RS 3
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This function removes the widget from the screen and frees up any memory the
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object may be using.
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.RE
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void setCDKScalePreProcess (CDKSCALE *\f2scale\f1, PROCESSFN \f2function\f1, void *\f2data\f1);
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.RS 3
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This function allows the user to have the widget call a function after a key
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is hit and before the key is applied to the widget. The parameter \f2function\f1
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if of type \f4PROCESSFN\f1. The parameter \f2data\f1 is a pointer to
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\f4void\f1. To learn more about pre-processing read the \f4cdk_process\f1
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manual page.
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.RE
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void setCDKScalePostProcess (CDKSCALE *\f2scale\f1, PROCESSFN \f2function\f1, void *\f2data\f1);
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.RS 3
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This function allows the user to have the widget call a function after the
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key has been applied to the widget. The parameter \f2function\f1 if of type
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\f4PROCESSFN\f1. The parameter \f2data\f1 is a pointer to \f4void\f1. To
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learn more about post-processing read the \f4cdk_process\f1 manual page.
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.RE
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void bindCDKObject (EObjectType \f2widgetType\f1, void *\f2object\f1, char \f2key\f1, BINDFN \f2function\f1, void *\f2data\f1);
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.RS 3
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This function allows the user to create special key bindings. The
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\f2widgetType\f1 parameter is a defined type which states what Cdk object
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type is being used. To learn more about the type \f4EObjectType\f1 read
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the \f2cdk_binding\f1 manual page. The \f2object\f1 parameter is the pointer
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to the widget object. The \f2key\f1 is the character to bind. The
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\f2function\f1 is the function type. To learn more about the key binding
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callback function types read the \f4cdk_binding\f1 manual page. The last
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parameter \f2data\f1 is a pointer to any data that needs to get passed to
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the callback function.
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.RE
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.SH KEY BINDINGS
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When the widget is activated there are several default key bindings which will
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help the user enter or manipulate the information quickly. The following table
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outlines the keys and their actions for this widget.
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.LP
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.nf
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.RS 3
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\f2Key Action\f1
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Left Arrow Decrements the value in the field
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by the normal decrement value.
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Down Arrow Decrements the value in the field
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by the normal decrement value.
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d Decrements the value in the field
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by the normal decrement value.
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- Decrements the value in the field
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by the normal decrement value.
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Right Arrow Increments the value in the field
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by the normal increment value.
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Up Arrow Increments the value in the field
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by the normal increment value.
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u Increments the value in the field
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by the normal increment value.
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+ Increments the value in the field
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by the normal increment value.
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Prev Page Decrements the value in the field
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|
by the accelerated decrement value.
|
|
U Decrements the value in the field
|
|
by the accelerated decrement value.
|
|
Ctrl-B Decrements the value in the field
|
|
by the accelerated decrement value.
|
|
Next Page Increments the value in the field
|
|
by the accelerated increment value.
|
|
D Increments the value in the field
|
|
by the accelerated increment value.
|
|
Ctrl-F Increments the value in the field
|
|
by the accelerated increment value.
|
|
Home Sets the value to the low value.
|
|
g Sets the value to the low value.
|
|
0 Sets the value to the low value.
|
|
End Sets the value to the high value.
|
|
G Sets the value to the high value.
|
|
$ Sets the value to the high value.
|
|
Return Exits the widget and returns an
|
|
integer value representing which
|
|
item was selected. This also sets
|
|
the structure member \f4exitType\f1
|
|
in the widget pointer to the value of
|
|
\f4vNORMAL\f1.
|
|
Tab Exits the widget and returns an integer
|
|
value representing which item was
|
|
selected. This also sets the structure
|
|
member \f4exitType\f1 in the widget pointer
|
|
to the value of \f4vNORMAL\f1.
|
|
Escape Exits the widget and returns -1. This
|
|
also sets the structure member \f4exitType\f1
|
|
in the widget pointer to the value of
|
|
\f4vESCAPE_HIT\f1.
|
|
Ctrl-R Refreshes the screen.
|
|
.RE
|
|
.fi
|
|
.SH SEE ALSO
|
|
.BR cdk (3),
|
|
.BR cdk_binding (3),
|
|
.BR cdk_display (3),
|
|
.BR cdk_screen (3)
|
|
.SH NOTES
|
|
.PP
|
|
The header file \f4<cdk.h>\f1 automatically includes the header files
|
|
\f4<curses.h>\f1, \f4<stdlib.h>\f1, \f4<string.h>\f1, \f4<ctype.h>\f1,
|
|
\f4<unistd.h>\f1, \f4<dirent.h>\f1, \f4<time.h>\f1, \f4<errno.h>\f1,
|
|
\f4<pwd.h>\f1, \f4<grp.h>\f1, \f4<sys/stat.h>\f1, and \f4<sys/types.h>\f1.
|
|
The \f4<curses.h>\f1 header file includes \f4<stdio.h>\f1 and \f4<unctrl.h>\f1.
|
|
.PP
|
|
If you have \f4Ncurses\f1 installed on your machine add -DNCURSES to the
|
|
compile line to include the Ncurses header files instead.
|