[3330] | 1 | # -*- mode: tcl; indent-tabs-mode: nil -*- |
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[1471] | 2 | # ---------------------------------------------------------------------- |
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| 3 | # COMPONENT: Flowdial - selector, like the dial on a flow |
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| 4 | # |
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| 5 | # This widget looks like the dial on an old-fashioned car flow. |
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| 6 | # It draws a series of values along an axis, and allows a selector |
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| 7 | # to move back and forth to select the values. |
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| 8 | # ====================================================================== |
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| 9 | # AUTHOR: Michael McLennan, Purdue University |
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[3177] | 10 | # Copyright (c) 2004-2012 HUBzero Foundation, LLC |
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[1471] | 11 | # |
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| 12 | # See the file "license.terms" for information on usage and |
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| 13 | # redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES. |
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| 14 | # ====================================================================== |
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| 15 | package require Itk |
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| 16 | |
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| 17 | option add *Flowdial.dialProgressColor #6666cc widgetDefault |
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| 18 | option add *Flowdial.thickness 10 widgetDefault |
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| 19 | option add *Flowdial.length 2i widgetDefault |
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| 20 | option add *Flowdial.knobImage knob widgetDefault |
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| 21 | option add *Flowdial.knobPosition n@middle widgetDefault |
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| 22 | option add *Flowdial.dialOutlineColor black widgetDefault |
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| 23 | option add *Flowdial.dialFillColor white widgetDefault |
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| 24 | option add *Flowdial.lineColor gray widgetDefault |
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| 25 | option add *Flowdial.activeLineColor black widgetDefault |
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| 26 | option add *Flowdial.padding 0 widgetDefault |
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| 27 | option add *Flowdial.valueWidth 10 widgetDefault |
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| 28 | option add *Flowdial.valuePadding 0.1 widgetDefault |
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| 29 | option add *Flowdial.foreground black widgetDefault |
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| 30 | option add *Flowdial.font \ |
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| 31 | -*-helvetica-medium-r-normal-*-12-* widgetDefault |
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| 32 | |
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| 33 | itcl::class Rappture::Flowdial { |
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| 34 | inherit itk::Widget |
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| 35 | |
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| 36 | itk_option define -min min Min "" |
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| 37 | itk_option define -max max Max "" |
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| 38 | itk_option define -variable variable Variable "" |
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| 39 | |
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| 40 | itk_option define -thickness thickness Thickness 0 |
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| 41 | itk_option define -length length Length 0 |
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| 42 | itk_option define -padding padding Padding 0 |
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| 43 | |
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| 44 | itk_option define -foreground foreground Foreground "black" |
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| 45 | itk_option define -dialoutlinecolor dialOutlineColor Color "black" |
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| 46 | itk_option define -dialfillcolor dialFillColor Color "white" |
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| 47 | itk_option define -dialprogresscolor dialProgressColor Color "" |
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| 48 | itk_option define -linecolor lineColor Color "black" |
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| 49 | itk_option define -activelinecolor activeLineColor Color "black" |
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| 50 | itk_option define -knobimage knobImage KnobImage "" |
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| 51 | itk_option define -knobposition knobPosition KnobPosition "" |
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| 52 | |
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| 53 | itk_option define -font font Font "" |
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| 54 | itk_option define -valuewidth valueWidth ValueWidth 0 |
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| 55 | itk_option define -valuepadding valuePadding ValuePadding 0 |
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| 56 | |
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| 57 | |
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| 58 | constructor {args} { # defined below } |
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| 59 | destructor { # defined below } |
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| 60 | |
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| 61 | public method current {value} |
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| 62 | public method clear {} |
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| 63 | public method color {value} |
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[2028] | 64 | |
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[1471] | 65 | protected method _redraw {} |
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| 66 | protected method _click {x y} |
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| 67 | protected method _navigate {offset} |
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| 68 | protected method _fixSize {} |
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| 69 | protected method _fixValue {args} |
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| 70 | |
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| 71 | private method _current {value} |
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| 72 | private method ms2rel {value} |
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| 73 | private method rel2ms {value} |
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| 74 | private variable _values "" ;# list of all values on the dial |
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| 75 | private variable _val2label ;# maps value => string label(s) |
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| 76 | private variable _current "" ;# current value (where pointer is) |
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| 77 | private variable _variable "" ;# variable associated with -variable |
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| 78 | private variable _knob "" ;# image for knob |
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| 79 | private variable _spectrum "" ;# width allocated for values |
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| 80 | private variable _activecolor "" ;# width allocated for values |
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| 81 | private variable _vwidth 0 ;# width allocated for values |
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| 82 | public variable min 0.0 |
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| 83 | public variable max 1.0 |
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| 84 | } |
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[2028] | 85 | |
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[1471] | 86 | itk::usual Flowdial { |
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| 87 | keep -background -foreground -cursor -font |
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| 88 | } |
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| 89 | |
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| 90 | # ---------------------------------------------------------------------- |
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| 91 | # CONSTRUCTOR |
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| 92 | # ---------------------------------------------------------------------- |
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| 93 | itcl::body Rappture::Flowdial::constructor {args} { |
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| 94 | itk_component add dial { |
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[1694] | 95 | canvas $itk_interior.dial |
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[1471] | 96 | } |
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| 97 | pack $itk_component(dial) -expand yes -fill both |
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| 98 | bind $itk_component(dial) <Configure> [itcl::code $this _redraw] |
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| 99 | |
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[1924] | 100 | if 0 { |
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[1471] | 101 | bind $itk_component(dial) <ButtonPress-1> [itcl::code $this _click %x %y] |
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| 102 | bind $itk_component(dial) <B1-Motion> [itcl::code $this _click %x %y] |
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| 103 | bind $itk_component(dial) <ButtonRelease-1> [itcl::code $this _click %x %y] |
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[1924] | 104 | bind $itk_component(hull) <KeyPress-Left> [itcl::code $this _navigate -1] |
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| 105 | bind $itk_component(hull) <KeyPress-Right> [itcl::code $this _navigate 1] |
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[1471] | 106 | $itk_component(dial) bind "knob" <Enter> \ |
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[1694] | 107 | [list $itk_component(dial) configure -cursor sb_h_double_arrow] |
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[1471] | 108 | $itk_component(dial) bind "knob" <Leave> \ |
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[1694] | 109 | [list $itk_component(dial) configure -cursor ""] |
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[1924] | 110 | } |
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[1471] | 111 | eval itk_initialize $args |
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| 112 | |
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| 113 | _fixSize |
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| 114 | } |
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| 115 | |
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| 116 | # ---------------------------------------------------------------------- |
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| 117 | # DESTRUCTOR |
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| 118 | # ---------------------------------------------------------------------- |
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| 119 | itcl::body Rappture::Flowdial::destructor {} { |
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| 120 | configure -variable "" ;# remove variable trace |
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| 121 | after cancel [itcl::code $this _redraw] |
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| 122 | } |
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| 123 | |
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| 124 | # ---------------------------------------------------------------------- |
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| 125 | # USAGE: current ?<value>? |
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| 126 | # |
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| 127 | # Clients use this to set a new value for the dial. Values are always |
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| 128 | # sorted in order along the dial. If the value is not specified, |
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| 129 | # then it is created automatically based on the number of elements |
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| 130 | # on the dial. |
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| 131 | # ---------------------------------------------------------------------- |
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| 132 | itcl::body Rappture::Flowdial::current {value} { |
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| 133 | if {"" == $value} { |
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[1924] | 134 | return |
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[1471] | 135 | } |
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| 136 | _current [ms2rel $value] |
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| 137 | event generate $itk_component(hull) <<Value>> |
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| 138 | } |
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| 139 | |
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| 140 | # ---------------------------------------------------------------------- |
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| 141 | # USAGE: _current ?<value>? |
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| 142 | # |
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| 143 | # Clients use this to set a new value for the dial. Values are always |
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| 144 | # sorted in order along the dial. If the value is not specified, |
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| 145 | # then it is created automatically based on the number of elements |
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| 146 | # on the dial. |
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| 147 | # ---------------------------------------------------------------------- |
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| 148 | itcl::body Rappture::Flowdial::_current {relval} { |
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| 149 | if { $relval < 0.0 } { |
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[1694] | 150 | set relval 0.0 |
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[1924] | 151 | } |
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[1471] | 152 | if { $relval > 1.0 } { |
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[1694] | 153 | set relval 1.0 |
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[1924] | 154 | } |
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[1471] | 155 | set _current $relval |
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| 156 | after cancel [itcl::code $this _redraw] |
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| 157 | after idle [itcl::code $this _redraw] |
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| 158 | if { $_variable != "" } { |
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[1694] | 159 | upvar #0 $_variable var |
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| 160 | set var [rel2ms $_current] |
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[1471] | 161 | } |
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| 162 | } |
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| 163 | |
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| 164 | # ---------------------------------------------------------------------- |
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| 165 | # USAGE: color <value> |
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| 166 | # |
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| 167 | # Clients use this to query the color associated with a <value> |
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| 168 | # along the dial. |
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| 169 | # ---------------------------------------------------------------------- |
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| 170 | itcl::body Rappture::Flowdial::color {value} { |
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| 171 | if {"" != $_spectrum} { |
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[1694] | 172 | set frac [expr {double($value-$min)/($max-$min)}] |
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| 173 | set color [$_spectrum get $frac] |
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[1471] | 174 | } else { |
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[1694] | 175 | if {$value == $_current} { |
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| 176 | set color $_activecolor |
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| 177 | } else { |
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| 178 | set color $itk_option(-linecolor) |
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| 179 | } |
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[1471] | 180 | } |
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| 181 | return $color |
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| 182 | } |
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| 183 | |
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| 184 | # ---------------------------------------------------------------------- |
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| 185 | # USAGE: _redraw |
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| 186 | # |
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| 187 | # Called automatically whenever the widget changes size to redraw |
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| 188 | # all elements within it. |
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| 189 | # ---------------------------------------------------------------------- |
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| 190 | itcl::body Rappture::Flowdial::_redraw {} { |
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| 191 | set c $itk_component(dial) |
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| 192 | $c delete all |
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| 193 | |
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| 194 | set fg $itk_option(-foreground) |
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| 195 | |
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| 196 | set w [winfo width $c] |
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| 197 | set h [winfo height $c] |
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| 198 | set p [winfo pixels $c $itk_option(-padding)] |
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| 199 | set t [expr {$itk_option(-thickness)+1}] |
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| 200 | set y1 [expr {$h-1}] |
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| 201 | |
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| 202 | if {"" != $_knob} { |
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[1694] | 203 | set kw [image width $_knob] |
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| 204 | set kh [image height $_knob] |
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[1471] | 205 | |
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[1694] | 206 | switch -- $itk_option(-knobposition) { |
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| 207 | n@top - nw@top - ne@top { |
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| 208 | set extra [expr {$t-$kh}] |
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| 209 | if {$extra < 0} {set extra 0} |
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| 210 | set y1 [expr {$h-$extra-1}] |
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| 211 | } |
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| 212 | n@middle - nw@middle - ne@middle { |
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| 213 | set extra [expr {int(ceil($kh-0.5*$t))}] |
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| 214 | if {$extra < 0} {set extra 0} |
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| 215 | set y1 [expr {$h-$extra-1}] |
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| 216 | } |
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| 217 | n@bottom - nw@bottom - ne@bottom { |
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| 218 | set y1 [expr {$h-$kh-1}] |
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| 219 | } |
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[1471] | 220 | |
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[1694] | 221 | e@top - w@top - center@top - |
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| 222 | e@bottom - w@bottom - center@bottom { |
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| 223 | set extra [expr {int(ceil(0.5*$kh))}] |
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| 224 | set y1 [expr {$h-$extra-1}] |
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| 225 | } |
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| 226 | e@middle - w@middle - center@middle { |
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| 227 | set extra [expr {int(ceil(0.5*($kh-$t)))}] |
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| 228 | if {$extra < 0} {set extra 0} |
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| 229 | set y1 [expr {$h-$extra-1}] |
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| 230 | } |
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[1471] | 231 | |
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[1694] | 232 | s@top - sw@top - se@top - |
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| 233 | s@middle - sw@middle - se@middle - |
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| 234 | s@bottom - sw@bottom - se@bottom { |
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| 235 | set y1 [expr {$h-2}] |
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| 236 | } |
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| 237 | } |
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[1471] | 238 | } |
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| 239 | set y0 [expr {$y1-$t}] |
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| 240 | set x0 [expr {$p+1}] |
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| 241 | set x1 [expr {$w-$_vwidth-$p-4}] |
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| 242 | |
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| 243 | # draw the background rectangle |
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| 244 | $c create rectangle $x0 $y0 $x1 $y1 \ |
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[1694] | 245 | -outline $itk_option(-dialoutlinecolor) \ |
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| 246 | -fill $itk_option(-dialfillcolor) |
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[1471] | 247 | |
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| 248 | # draw the optional progress bar, from start to current |
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| 249 | if {"" != $itk_option(-dialprogresscolor) } { |
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[1694] | 250 | set xx1 [expr {$_current*($x1-$x0) + $x0}] |
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| 251 | $c create rectangle [expr {$x0+1}] [expr {$y0+3}] $xx1 [expr {$y1-2}] \ |
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| 252 | -outline "" -fill $itk_option(-dialprogresscolor) |
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[1471] | 253 | } |
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| 254 | |
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| 255 | # draw lines for all values |
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| 256 | set x [expr {$_current*($x1-$x0) + $x0}] |
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| 257 | if {"" != $_spectrum} { |
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[1694] | 258 | set color [$_spectrum get $_current] |
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[1471] | 259 | } else { |
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[1694] | 260 | set color $_activecolor |
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| 261 | set thick 3 |
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| 262 | if {"" != $color} { |
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| 263 | $c create line $x [expr {$y0+1}] $x $y1 -fill $color -width $thick |
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| 264 | } |
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[1471] | 265 | } |
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| 266 | regexp {([nsew]+|center)@} $itk_option(-knobposition) match anchor |
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| 267 | switch -glob -- $itk_option(-knobposition) { |
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[1694] | 268 | *@top { set kpos $y0 } |
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| 269 | *@middle { set kpos [expr {int(ceil(0.5*($y1+$y0)))}] } |
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| 270 | *@bottom { set kpos $y1 } |
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[1471] | 271 | } |
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| 272 | $c create image $x $kpos -anchor $anchor -image $_knob -tags "knob" |
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| 273 | |
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| 274 | # if the -valuewidth is > 0, then make room for the value |
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| 275 | set vw $itk_option(-valuewidth) |
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| 276 | if {$vw > 0 && "" != $_current} { |
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[1694] | 277 | set str [lindex $_val2label($_current) 0] |
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| 278 | if {[string length $str] >= $vw} { |
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| 279 | set str "[string range $str 0 [expr {$vw-3}]]..." |
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| 280 | } |
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[1471] | 281 | |
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[1694] | 282 | set dy [expr {([font metrics $itk_option(-font) -linespace] |
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| 283 | - [font metrics $itk_option(-font) -ascent])/2}] |
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[1471] | 284 | |
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[1694] | 285 | set id [$c create text [expr {$x1+4}] [expr {($y1+$y0)/2+$dy}] \ |
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| 286 | -anchor w -text $str -font $itk_option(-font) -foreground $fg] |
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| 287 | foreach {x0 y0 x1 y1} [$c bbox $id] break |
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| 288 | set x0 [expr {$x0 + 10}] |
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[1471] | 289 | |
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[1694] | 290 | # set up a tooltip so you can mouse over truncated values |
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| 291 | Rappture::Tooltip::text $c [lindex $_val2label($_current) 0] |
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| 292 | $c bind $id <Enter> \ |
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| 293 | [list ::Rappture::Tooltip::tooltip pending %W +$x0,$y1] |
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| 294 | $c bind $id <Leave> \ |
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| 295 | [list ::Rappture::Tooltip::tooltip cancel] |
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| 296 | $c bind $id <ButtonPress> \ |
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| 297 | [list ::Rappture::Tooltip::tooltip cancel] |
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| 298 | $c bind $id <KeyPress> \ |
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| 299 | [list ::Rappture::Tooltip::tooltip cancel] |
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[1471] | 300 | } |
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| 301 | } |
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| 302 | |
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| 303 | # ---------------------------------------------------------------------- |
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| 304 | # USAGE: _click <x> <y> |
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| 305 | # |
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| 306 | # Called automatically whenever the user clicks or drags on the widget |
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| 307 | # to select a value. Moves the current value to the one nearest the |
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| 308 | # click point. If the value actually changes, it generates a <<Value>> |
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| 309 | # event to notify clients. |
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| 310 | # ---------------------------------------------------------------------- |
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| 311 | itcl::body Rappture::Flowdial::_click {x y} { |
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| 312 | set c $itk_component(dial) |
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| 313 | set w [winfo width $c] |
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| 314 | set h [winfo height $c] |
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| 315 | set x0 1 |
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| 316 | set x1 [expr {$w-$_vwidth-4}] |
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| 317 | focus $itk_component(hull) |
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| 318 | if {$x >= $x0 && $x <= $x1} { |
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[1694] | 319 | current [rel2ms [expr double($x - $x0) / double($x1 - $x0)]] |
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[1471] | 320 | } |
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| 321 | } |
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| 322 | |
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| 323 | # ---------------------------------------------------------------------- |
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| 324 | # USAGE: _navigate <offset> |
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| 325 | # |
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| 326 | # Called automatically whenever the user presses left/right keys |
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| 327 | # to nudge the current value left or right by some <offset>. If the |
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| 328 | # value actually changes, it generates a <<Value>> event to notify |
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| 329 | # clients. |
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| 330 | # ---------------------------------------------------------------------- |
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[1924] | 331 | itcl::body Rappture::Flowdial::_navigate {offset} { |
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| 332 | set index [lsearch -exact $_values $_current] |
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| 333 | if {$index >= 0} { |
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| 334 | incr index $offset |
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| 335 | if {$index >= [llength $_values]} { |
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| 336 | set index [expr {[llength $_values]-1}] |
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| 337 | } elseif {$index < 0} { |
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| 338 | set index 0 |
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| 339 | } |
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[1471] | 340 | |
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[1924] | 341 | set newval [lindex $_values $index] |
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| 342 | if {$newval != $_current} { |
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| 343 | current $newval |
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| 344 | _redraw |
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[1471] | 345 | |
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[1924] | 346 | event generate $itk_component(hull) <<Value>> |
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| 347 | } |
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| 348 | } |
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[1471] | 349 | } |
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| 350 | |
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| 351 | |
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| 352 | # ---------------------------------------------------------------------- |
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| 353 | # USAGE: _fixSize |
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| 354 | # |
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| 355 | # Used internally to compute the overall size of the widget based |
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| 356 | # on the -thickness and -length options. |
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| 357 | # ---------------------------------------------------------------------- |
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| 358 | itcl::body Rappture::Flowdial::_fixSize {} { |
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| 359 | set h [winfo pixels $itk_component(hull) $itk_option(-thickness)] |
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| 360 | |
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| 361 | if {"" != $_knob} { |
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[1694] | 362 | set kh [image height $_knob] |
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[1471] | 363 | |
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[1694] | 364 | switch -- $itk_option(-knobposition) { |
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| 365 | n@top - nw@top - ne@top - |
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| 366 | s@bottom - sw@bottom - se@bottom { |
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| 367 | if {$kh > $h} { set h $kh } |
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| 368 | } |
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| 369 | n@middle - nw@middle - ne@middle - |
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| 370 | s@middle - sw@middle - se@middle { |
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| 371 | set h [expr {int(ceil(0.5*$h + $kh))}] |
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| 372 | } |
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| 373 | n@bottom - nw@bottom - ne@bottom - |
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| 374 | s@top - sw@top - se@top { |
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| 375 | set h [expr {$h + $kh}] |
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| 376 | } |
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| 377 | e@middle - w@middle - center@middle { |
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| 378 | set h [expr {(($h > $kh) ? $h : $kh) + 1}] |
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| 379 | } |
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| 380 | n@middle - ne@middle - nw@middle - |
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| 381 | s@middle - se@middle - sw@middle { |
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| 382 | set extra [expr {int(ceil($kh-0.5*$h))}] |
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| 383 | if {$extra < 0} { set extra 0 } |
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| 384 | set h [expr {$h+$extra}] |
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| 385 | } |
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| 386 | } |
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[1471] | 387 | } |
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| 388 | incr h 1 |
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| 389 | |
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| 390 | set w [winfo pixels $itk_component(hull) $itk_option(-length)] |
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| 391 | |
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| 392 | # if the -valuewidth is > 0, then make room for the value |
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| 393 | if {$itk_option(-valuewidth) > 0} { |
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[1694] | 394 | set charw [font measure $itk_option(-font) "n"] |
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| 395 | set _vwidth [expr {$itk_option(-valuewidth)*$charw}] |
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| 396 | set w [expr {$w+$_vwidth+4}] |
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[1471] | 397 | } else { |
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[1694] | 398 | set _vwidth 0 |
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[1471] | 399 | } |
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| 400 | |
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| 401 | $itk_component(dial) configure -width $w -height $h |
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| 402 | } |
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| 403 | |
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| 404 | # ---------------------------------------------------------------------- |
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| 405 | # USAGE: _fixValue ?<name1> <name2> <op>? |
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| 406 | # |
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| 407 | # Invoked automatically whenever the -variable associated with this |
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| 408 | # widget is modified. Copies the value to the current settings for |
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| 409 | # the widget. |
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| 410 | # ---------------------------------------------------------------------- |
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| 411 | itcl::body Rappture::Flowdial::_fixValue {args} { |
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| 412 | if {"" == $itk_option(-variable)} { |
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[1694] | 413 | return |
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[1471] | 414 | } |
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| 415 | upvar #0 $itk_option(-variable) var |
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| 416 | _current [ms2rel $var] |
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| 417 | } |
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| 418 | |
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| 419 | itcl::body Rappture::Flowdial::ms2rel { value } { |
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| 420 | if { $max > $min } { |
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[1694] | 421 | return [expr {($value - $min) / ($max - $min)}] |
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[1471] | 422 | } |
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| 423 | return 0 |
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| 424 | } |
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| 425 | |
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| 426 | itcl::body Rappture::Flowdial::rel2ms { value } { |
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| 427 | return [expr $value * ($max - $min) + $min] |
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| 428 | } |
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| 429 | |
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| 430 | # ---------------------------------------------------------------------- |
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| 431 | # CONFIGURE: -thickness |
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| 432 | # ---------------------------------------------------------------------- |
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| 433 | itcl::configbody Rappture::Flowdial::thickness { |
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| 434 | _fixSize |
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| 435 | } |
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| 436 | |
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| 437 | # ---------------------------------------------------------------------- |
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| 438 | # CONFIGURE: -length |
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| 439 | # ---------------------------------------------------------------------- |
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| 440 | itcl::configbody Rappture::Flowdial::length { |
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| 441 | _fixSize |
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| 442 | } |
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| 443 | |
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| 444 | # ---------------------------------------------------------------------- |
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| 445 | # CONFIGURE: -font |
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| 446 | # ---------------------------------------------------------------------- |
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| 447 | itcl::configbody Rappture::Flowdial::font { |
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| 448 | _fixSize |
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| 449 | } |
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| 450 | |
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| 451 | # ---------------------------------------------------------------------- |
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| 452 | # CONFIGURE: -valuewidth |
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| 453 | # ---------------------------------------------------------------------- |
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| 454 | itcl::configbody Rappture::Flowdial::valuewidth { |
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| 455 | if {![string is integer $itk_option(-valuewidth)]} { |
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[1694] | 456 | error "bad value \"$itk_option(-valuewidth)\": should be integer" |
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[1471] | 457 | } |
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| 458 | _fixSize |
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| 459 | after cancel [itcl::code $this _redraw] |
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| 460 | after idle [itcl::code $this _redraw] |
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| 461 | } |
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| 462 | |
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| 463 | # ---------------------------------------------------------------------- |
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| 464 | # CONFIGURE: -foreground |
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| 465 | # ---------------------------------------------------------------------- |
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| 466 | itcl::configbody Rappture::Flowdial::foreground { |
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| 467 | after cancel [itcl::code $this _redraw] |
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| 468 | after idle [itcl::code $this _redraw] |
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| 469 | } |
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| 470 | |
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| 471 | # ---------------------------------------------------------------------- |
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| 472 | # CONFIGURE: -dialoutlinecolor |
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| 473 | # ---------------------------------------------------------------------- |
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| 474 | itcl::configbody Rappture::Flowdial::dialoutlinecolor { |
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| 475 | after cancel [itcl::code $this _redraw] |
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| 476 | after idle [itcl::code $this _redraw] |
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| 477 | } |
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| 478 | |
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| 479 | # ---------------------------------------------------------------------- |
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| 480 | # CONFIGURE: -dialfillcolor |
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| 481 | # ---------------------------------------------------------------------- |
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| 482 | itcl::configbody Rappture::Flowdial::dialfillcolor { |
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| 483 | after cancel [itcl::code $this _redraw] |
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| 484 | after idle [itcl::code $this _redraw] |
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| 485 | } |
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| 486 | |
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| 487 | # ---------------------------------------------------------------------- |
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| 488 | # CONFIGURE: -dialprogresscolor |
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| 489 | # ---------------------------------------------------------------------- |
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| 490 | itcl::configbody Rappture::Flowdial::dialprogresscolor { |
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| 491 | after cancel [itcl::code $this _redraw] |
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| 492 | after idle [itcl::code $this _redraw] |
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| 493 | } |
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| 494 | |
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| 495 | # ---------------------------------------------------------------------- |
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| 496 | # CONFIGURE: -linecolor |
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| 497 | # ---------------------------------------------------------------------- |
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| 498 | itcl::configbody Rappture::Flowdial::linecolor { |
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| 499 | after cancel [itcl::code $this _redraw] |
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| 500 | after idle [itcl::code $this _redraw] |
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| 501 | } |
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| 502 | |
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| 503 | # ---------------------------------------------------------------------- |
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| 504 | # CONFIGURE: -activelinecolor |
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| 505 | # ---------------------------------------------------------------------- |
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| 506 | itcl::configbody Rappture::Flowdial::activelinecolor { |
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| 507 | set val $itk_option(-activelinecolor) |
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| 508 | if {[catch {$val isa ::Rappture::Spectrum} valid] == 0 && $valid} { |
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[1694] | 509 | set _spectrum $val |
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| 510 | set _activecolor "" |
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[1471] | 511 | } elseif {[catch {winfo rgb $itk_component(hull) $val}] == 0} { |
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[1694] | 512 | set _spectrum "" |
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| 513 | set _activecolor $val |
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[1471] | 514 | } elseif {"" != $val} { |
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[1694] | 515 | error "bad value \"$val\": should be Spectrum object or color" |
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[1471] | 516 | } |
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| 517 | after cancel [itcl::code $this _redraw] |
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| 518 | after idle [itcl::code $this _redraw] |
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| 519 | } |
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| 520 | |
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| 521 | # ---------------------------------------------------------------------- |
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| 522 | # CONFIGURE: -knobimage |
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| 523 | # ---------------------------------------------------------------------- |
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| 524 | itcl::configbody Rappture::Flowdial::knobimage { |
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| 525 | if {[regexp {^image[0-9]+$} $itk_option(-knobimage)]} { |
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[1694] | 526 | set _knob $itk_option(-knobimage) |
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[1471] | 527 | } elseif {"" != $itk_option(-knobimage)} { |
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[1694] | 528 | set _knob [Rappture::icon $itk_option(-knobimage)] |
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[1471] | 529 | } else { |
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[1694] | 530 | set _knob "" |
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[1471] | 531 | } |
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| 532 | _fixSize |
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| 533 | |
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| 534 | after cancel [itcl::code $this _redraw] |
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| 535 | after idle [itcl::code $this _redraw] |
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| 536 | } |
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| 537 | |
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| 538 | # ---------------------------------------------------------------------- |
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| 539 | # CONFIGURE: -knobposition |
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| 540 | # ---------------------------------------------------------------------- |
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| 541 | itcl::configbody Rappture::Flowdial::knobposition { |
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| 542 | if {![regexp {^([nsew]+|center)@(top|middle|bottom)$} $itk_option(-knobposition)]} { |
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[1694] | 543 | error "bad value \"$itk_option(-knobposition)\": should be anchor@top|middle|bottom" |
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[1471] | 544 | } |
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| 545 | _fixSize |
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| 546 | |
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| 547 | after cancel [itcl::code $this _redraw] |
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| 548 | after idle [itcl::code $this _redraw] |
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| 549 | } |
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| 550 | |
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| 551 | # ---------------------------------------------------------------------- |
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| 552 | # CONFIGURE: -padding |
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| 553 | # This adds padding on left/right side of dial background. |
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| 554 | # ---------------------------------------------------------------------- |
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| 555 | itcl::configbody Rappture::Flowdial::padding { |
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| 556 | if {[catch {winfo pixels $itk_component(hull) $itk_option(-padding)}]} { |
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[1694] | 557 | error "bad value \"$itk_option(-padding)\": should be size in pixels" |
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[1471] | 558 | } |
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| 559 | } |
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| 560 | |
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| 561 | # ---------------------------------------------------------------------- |
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| 562 | # CONFIGURE: -valuepadding |
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| 563 | # This shifts min/max limits in by a fraction of the overall size. |
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| 564 | # ---------------------------------------------------------------------- |
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| 565 | itcl::configbody Rappture::Flowdial::valuepadding { |
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| 566 | if {![string is double $itk_option(-valuepadding)] |
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[1694] | 567 | || $itk_option(-valuepadding) < 0} { |
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| 568 | error "bad value \"$itk_option(-valuepadding)\": should be >= 0.0" |
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[1471] | 569 | } |
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| 570 | } |
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| 571 | |
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| 572 | # ---------------------------------------------------------------------- |
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| 573 | # CONFIGURE: -variable |
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| 574 | # ---------------------------------------------------------------------- |
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| 575 | itcl::configbody Rappture::Flowdial::variable { |
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| 576 | if {"" != $_variable} { |
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[1694] | 577 | upvar #0 $_variable var |
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| 578 | trace remove variable var write [itcl::code $this _fixValue] |
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[1471] | 579 | } |
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| 580 | |
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| 581 | set _variable $itk_option(-variable) |
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| 582 | |
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| 583 | if {"" != $_variable} { |
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[1694] | 584 | upvar #0 $_variable var |
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| 585 | trace add variable var write [itcl::code $this _fixValue] |
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[1471] | 586 | |
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[1694] | 587 | # sync to the current value of this variable |
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| 588 | if {[info exists var]} { |
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| 589 | _fixValue |
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| 590 | } |
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[1471] | 591 | } |
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| 592 | } |
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