1 | # ---------------------------------------------------------------------- |
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2 | # COMPONENT: Flowdial - selector, like the dial on a flow |
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3 | # |
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4 | # This widget looks like the dial on an old-fashioned car flow. |
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5 | # It draws a series of values along an axis, and allows a selector |
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6 | # to move back and forth to select the values. |
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7 | # ====================================================================== |
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8 | # AUTHOR: Michael McLennan, Purdue University |
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9 | # Copyright (c) 2004-2005 Purdue Research Foundation |
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10 | # |
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11 | # See the file "license.terms" for information on usage and |
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12 | # redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES. |
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13 | # ====================================================================== |
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14 | package require Itk |
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15 | |
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16 | option add *Flowdial.dialProgressColor #6666cc widgetDefault |
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17 | option add *Flowdial.thickness 10 widgetDefault |
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18 | option add *Flowdial.length 2i widgetDefault |
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19 | option add *Flowdial.knobImage knob widgetDefault |
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20 | option add *Flowdial.knobPosition n@middle widgetDefault |
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21 | option add *Flowdial.dialOutlineColor black widgetDefault |
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22 | option add *Flowdial.dialFillColor white widgetDefault |
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23 | option add *Flowdial.lineColor gray widgetDefault |
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24 | option add *Flowdial.activeLineColor black widgetDefault |
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25 | option add *Flowdial.padding 0 widgetDefault |
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26 | option add *Flowdial.valueWidth 10 widgetDefault |
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27 | option add *Flowdial.valuePadding 0.1 widgetDefault |
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28 | option add *Flowdial.foreground black widgetDefault |
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29 | option add *Flowdial.font \ |
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30 | -*-helvetica-medium-r-normal-*-12-* widgetDefault |
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31 | |
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32 | itcl::class Rappture::Flowdial { |
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33 | inherit itk::Widget |
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34 | |
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35 | itk_option define -min min Min "" |
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36 | itk_option define -max max Max "" |
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37 | itk_option define -variable variable Variable "" |
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38 | itk_option define -offset offset Offset 1 |
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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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64 | |
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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 | protected method _fixOffsets {} |
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71 | |
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72 | private method _current {value} |
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73 | private method ms2rel {value} |
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74 | private method rel2ms {value} |
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75 | private variable _values "" ;# list of all values on the dial |
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76 | private variable _val2label ;# maps value => string label(s) |
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77 | private variable _current "" ;# current value (where pointer is) |
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78 | private variable _variable "" ;# variable associated with -variable |
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79 | private variable _knob "" ;# image for knob |
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80 | private variable _spectrum "" ;# width allocated for values |
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81 | private variable _activecolor "" ;# width allocated for values |
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82 | private variable _vwidth 0 ;# width allocated for values |
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83 | private variable _offset_pos 1 ;# |
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84 | private variable _offset_neg -1 ;# |
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85 | public variable min 0.0 |
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86 | public variable max 1.0 |
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87 | } |
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88 | |
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89 | itk::usual Flowdial { |
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90 | keep -background -foreground -cursor -font |
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91 | } |
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92 | |
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93 | # ---------------------------------------------------------------------- |
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94 | # CONSTRUCTOR |
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95 | # ---------------------------------------------------------------------- |
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96 | itcl::body Rappture::Flowdial::constructor {args} { |
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97 | itk_component add dial { |
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98 | canvas $itk_interior.dial |
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99 | } |
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100 | pack $itk_component(dial) -expand yes -fill both |
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101 | bind $itk_component(dial) <Configure> [itcl::code $this _redraw] |
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102 | |
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103 | # if 0 { |
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104 | bind $itk_component(dial) <ButtonPress-1> [itcl::code $this _click %x %y] |
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105 | bind $itk_component(dial) <B1-Motion> [itcl::code $this _click %x %y] |
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106 | bind $itk_component(dial) <ButtonRelease-1> [itcl::code $this _click %x %y] |
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107 | #bind $itk_component(hull) <KeyPress-Left> [itcl::code $this _navigate $_offset_neg] |
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108 | #bind $itk_component(hull) <KeyPress-Right> [itcl::code $this _navigate $_offset_pos] |
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109 | |
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110 | $itk_component(dial) bind "knob" <Enter> \ |
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111 | [list $itk_component(dial) configure -cursor sb_h_double_arrow] |
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112 | $itk_component(dial) bind "knob" <Leave> \ |
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113 | [list $itk_component(dial) configure -cursor ""] |
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114 | # } |
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115 | eval itk_initialize $args |
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116 | |
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117 | _fixSize |
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118 | _fixOffsets |
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119 | } |
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120 | |
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121 | # ---------------------------------------------------------------------- |
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122 | # DESTRUCTOR |
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123 | # ---------------------------------------------------------------------- |
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124 | itcl::body Rappture::Flowdial::destructor {} { |
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125 | configure -variable "" ;# remove variable trace |
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126 | after cancel [itcl::code $this _redraw] |
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127 | } |
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128 | |
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129 | # ---------------------------------------------------------------------- |
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130 | # USAGE: current ?<value>? |
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131 | # |
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132 | # Clients use this to set a new value for the dial. Values are always |
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133 | # sorted in order along the dial. If the value is not specified, |
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134 | # then it is created automatically based on the number of elements |
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135 | # on the dial. |
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136 | # ---------------------------------------------------------------------- |
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137 | itcl::body Rappture::Flowdial::current {value} { |
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138 | if {"" == $value} { |
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139 | return |
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140 | } |
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141 | _current [ms2rel $value] |
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142 | event generate $itk_component(hull) <<Value>> |
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143 | } |
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144 | |
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145 | # ---------------------------------------------------------------------- |
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146 | # USAGE: _current ?<value>? |
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147 | # |
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148 | # Clients use this to set a new value for the dial. Values are always |
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149 | # sorted in order along the dial. If the value is not specified, |
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150 | # then it is created automatically based on the number of elements |
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151 | # on the dial. |
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152 | # ---------------------------------------------------------------------- |
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153 | itcl::body Rappture::Flowdial::_current {relval} { |
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154 | if { $relval < 0.0 } { |
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155 | set relval 0.0 |
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156 | } |
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157 | if { $relval > 1.0 } { |
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158 | set relval 1.0 |
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159 | } |
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160 | set _current $relval |
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161 | after cancel [itcl::code $this _redraw] |
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162 | after idle [itcl::code $this _redraw] |
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163 | if { $_variable != "" } { |
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164 | upvar #0 $_variable var |
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165 | set var [rel2ms $_current] |
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166 | } |
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167 | } |
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168 | |
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169 | # ---------------------------------------------------------------------- |
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170 | # USAGE: color <value> |
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171 | # |
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172 | # Clients use this to query the color associated with a <value> |
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173 | # along the dial. |
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174 | # ---------------------------------------------------------------------- |
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175 | itcl::body Rappture::Flowdial::color {value} { |
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176 | if {"" != $_spectrum} { |
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177 | set frac [expr {double($value-$min)/($max-$min)}] |
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178 | set color [$_spectrum get $frac] |
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179 | } else { |
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180 | if {$value == $_current} { |
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181 | set color $_activecolor |
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182 | } else { |
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183 | set color $itk_option(-linecolor) |
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184 | } |
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185 | } |
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186 | return $color |
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187 | } |
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188 | |
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189 | # ---------------------------------------------------------------------- |
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190 | # USAGE: _redraw |
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191 | # |
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192 | # Called automatically whenever the widget changes size to redraw |
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193 | # all elements within it. |
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194 | # ---------------------------------------------------------------------- |
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195 | itcl::body Rappture::Flowdial::_redraw {} { |
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196 | set c $itk_component(dial) |
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197 | $c delete all |
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198 | |
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199 | set fg $itk_option(-foreground) |
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200 | |
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201 | set w [winfo width $c] |
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202 | set h [winfo height $c] |
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203 | set p [winfo pixels $c $itk_option(-padding)] |
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204 | set t [expr {$itk_option(-thickness)+1}] |
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205 | set y1 [expr {$h-1}] |
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206 | |
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207 | if {"" != $_knob} { |
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208 | set kw [image width $_knob] |
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209 | set kh [image height $_knob] |
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210 | |
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211 | switch -- $itk_option(-knobposition) { |
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212 | n@top - nw@top - ne@top { |
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213 | set extra [expr {$t-$kh}] |
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214 | if {$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@middle - nw@middle - ne@middle { |
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218 | set extra [expr {int(ceil($kh-0.5*$t))}] |
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219 | if {$extra < 0} {set extra 0} |
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220 | set y1 [expr {$h-$extra-1}] |
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221 | } |
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222 | n@bottom - nw@bottom - ne@bottom { |
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223 | set y1 [expr {$h-$kh-1}] |
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224 | } |
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225 | |
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226 | e@top - w@top - center@top - |
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227 | e@bottom - w@bottom - center@bottom { |
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228 | set extra [expr {int(ceil(0.5*$kh))}] |
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229 | set y1 [expr {$h-$extra-1}] |
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230 | } |
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231 | e@middle - w@middle - center@middle { |
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232 | set extra [expr {int(ceil(0.5*($kh-$t)))}] |
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233 | if {$extra < 0} {set extra 0} |
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234 | set y1 [expr {$h-$extra-1}] |
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235 | } |
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236 | |
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237 | s@top - sw@top - se@top - |
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238 | s@middle - sw@middle - se@middle - |
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239 | s@bottom - sw@bottom - se@bottom { |
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240 | set y1 [expr {$h-2}] |
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241 | } |
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242 | } |
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243 | } |
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244 | set y0 [expr {$y1-$t}] |
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245 | set x0 [expr {$p+1}] |
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246 | set x1 [expr {$w-$_vwidth-$p-4}] |
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247 | |
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248 | # draw the background rectangle |
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249 | $c create rectangle $x0 $y0 $x1 $y1 \ |
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250 | -outline $itk_option(-dialoutlinecolor) \ |
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251 | -fill $itk_option(-dialfillcolor) |
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252 | |
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253 | # draw the optional progress bar, from start to current |
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254 | if {"" != $itk_option(-dialprogresscolor) } { |
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255 | set xx1 [expr {$_current*($x1-$x0) + $x0}] |
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256 | $c create rectangle [expr {$x0+1}] [expr {$y0+3}] $xx1 [expr {$y1-2}] \ |
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257 | -outline "" -fill $itk_option(-dialprogresscolor) |
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258 | } |
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259 | |
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260 | # draw lines for all values |
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261 | set x [expr {$_current*($x1-$x0) + $x0}] |
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262 | if {"" != $_spectrum} { |
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263 | set color [$_spectrum get $_current] |
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264 | } else { |
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265 | set color $_activecolor |
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266 | set thick 3 |
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267 | if {"" != $color} { |
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268 | $c create line $x [expr {$y0+1}] $x $y1 -fill $color -width $thick |
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269 | } |
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270 | } |
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271 | regexp {([nsew]+|center)@} $itk_option(-knobposition) match anchor |
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272 | switch -glob -- $itk_option(-knobposition) { |
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273 | *@top { set kpos $y0 } |
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274 | *@middle { set kpos [expr {int(ceil(0.5*($y1+$y0)))}] } |
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275 | *@bottom { set kpos $y1 } |
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276 | } |
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277 | $c create image $x $kpos -anchor $anchor -image $_knob -tags "knob" |
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278 | |
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279 | # if the -valuewidth is > 0, then make room for the value |
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280 | set vw $itk_option(-valuewidth) |
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281 | if {$vw > 0 && "" != $_current} { |
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282 | set str [lindex $_val2label($_current) 0] |
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283 | if {[string length $str] >= $vw} { |
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284 | set str "[string range $str 0 [expr {$vw-3}]]..." |
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285 | } |
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286 | |
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287 | set dy [expr {([font metrics $itk_option(-font) -linespace] |
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288 | - [font metrics $itk_option(-font) -ascent])/2}] |
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289 | |
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290 | set id [$c create text [expr {$x1+4}] [expr {($y1+$y0)/2+$dy}] \ |
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291 | -anchor w -text $str -font $itk_option(-font) -foreground $fg] |
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292 | foreach {x0 y0 x1 y1} [$c bbox $id] break |
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293 | set x0 [expr {$x0 + 10}] |
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294 | |
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295 | # set up a tooltip so you can mouse over truncated values |
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296 | Rappture::Tooltip::text $c [lindex $_val2label($_current) 0] |
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297 | $c bind $id <Enter> \ |
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298 | [list ::Rappture::Tooltip::tooltip pending %W +$x0,$y1] |
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299 | $c bind $id <Leave> \ |
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300 | [list ::Rappture::Tooltip::tooltip cancel] |
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301 | $c bind $id <ButtonPress> \ |
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302 | [list ::Rappture::Tooltip::tooltip cancel] |
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303 | $c bind $id <KeyPress> \ |
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304 | [list ::Rappture::Tooltip::tooltip cancel] |
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305 | } |
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306 | } |
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307 | |
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308 | # ---------------------------------------------------------------------- |
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309 | # USAGE: _click <x> <y> |
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310 | # |
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311 | # Called automatically whenever the user clicks or drags on the widget |
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312 | # to select a value. Moves the current value to the one nearest the |
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313 | # click point. If the value actually changes, it generates a <<Value>> |
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314 | # event to notify clients. |
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315 | # ---------------------------------------------------------------------- |
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316 | itcl::body Rappture::Flowdial::_click {x y} { |
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317 | set c $itk_component(dial) |
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318 | set w [winfo width $c] |
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319 | set h [winfo height $c] |
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320 | set x0 1 |
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321 | set x1 [expr {$w-$_vwidth-4}] |
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322 | focus $itk_component(hull) |
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323 | if {$x >= $x0 && $x <= $x1} { |
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324 | current [rel2ms [expr double($x - $x0) / double($x1 - $x0)]] |
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325 | } |
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326 | } |
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327 | |
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328 | # ---------------------------------------------------------------------- |
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329 | # USAGE: _navigate <offset> |
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330 | # |
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331 | # Called automatically whenever the user presses left/right keys |
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332 | # to nudge the current value left or right by some <offset>. If the |
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333 | # value actually changes, it generates a <<Value>> event to notify |
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334 | # clients. |
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335 | # ---------------------------------------------------------------------- |
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336 | #itcl::body Rappture::Flowdial::_navigate {offset} { |
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337 | # set index [lsearch -exact $_values $_current] |
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338 | # if {$index >= 0} { |
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339 | # incr index $offset |
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340 | # if {$index >= [llength $_values]} { |
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341 | # set index [expr {[llength $_values]-1}] |
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342 | # } elseif {$index < 0} { |
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343 | # set index 0 |
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344 | # } |
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345 | # |
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346 | # set newval [lindex $_values $index] |
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347 | # if {$newval != $_current} { |
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348 | # current $newval |
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349 | # _redraw |
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350 | # |
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351 | # event generate $itk_component(hull) <<Value>> |
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352 | # } |
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353 | # } |
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354 | #} |
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355 | |
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356 | |
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357 | # ---------------------------------------------------------------------- |
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358 | # USAGE: _navigate <offset> |
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359 | # |
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360 | # Called automatically whenever the user presses left/right keys |
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361 | # to nudge the current value left or right by some <offset>. If the |
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362 | # value actually changes, it generates a <<Value>> event to notify |
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363 | # clients. |
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364 | # ---------------------------------------------------------------------- |
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365 | itcl::body Rappture::Flowdial::_navigate {offset} { |
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366 | _current [ms2rel [expr $_current + $offset]] |
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367 | event generate $itk_component(hull) <<Value>> |
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368 | } |
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369 | |
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370 | |
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371 | # ---------------------------------------------------------------------- |
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372 | # USAGE: _fixSize |
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373 | # |
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374 | # Used internally to compute the overall size of the widget based |
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375 | # on the -thickness and -length options. |
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376 | # ---------------------------------------------------------------------- |
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377 | itcl::body Rappture::Flowdial::_fixSize {} { |
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378 | set h [winfo pixels $itk_component(hull) $itk_option(-thickness)] |
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379 | |
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380 | if {"" != $_knob} { |
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381 | set kh [image height $_knob] |
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382 | |
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383 | switch -- $itk_option(-knobposition) { |
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384 | n@top - nw@top - ne@top - |
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385 | s@bottom - sw@bottom - se@bottom { |
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386 | if {$kh > $h} { set h $kh } |
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387 | } |
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388 | n@middle - nw@middle - ne@middle - |
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389 | s@middle - sw@middle - se@middle { |
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390 | set h [expr {int(ceil(0.5*$h + $kh))}] |
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391 | } |
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392 | n@bottom - nw@bottom - ne@bottom - |
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393 | s@top - sw@top - se@top { |
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394 | set h [expr {$h + $kh}] |
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395 | } |
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396 | e@middle - w@middle - center@middle { |
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397 | set h [expr {(($h > $kh) ? $h : $kh) + 1}] |
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398 | } |
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399 | n@middle - ne@middle - nw@middle - |
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400 | s@middle - se@middle - sw@middle { |
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401 | set extra [expr {int(ceil($kh-0.5*$h))}] |
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402 | if {$extra < 0} { set extra 0 } |
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403 | set h [expr {$h+$extra}] |
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404 | } |
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405 | } |
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406 | } |
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407 | incr h 1 |
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408 | |
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409 | set w [winfo pixels $itk_component(hull) $itk_option(-length)] |
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410 | |
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411 | # if the -valuewidth is > 0, then make room for the value |
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412 | if {$itk_option(-valuewidth) > 0} { |
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413 | set charw [font measure $itk_option(-font) "n"] |
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414 | set _vwidth [expr {$itk_option(-valuewidth)*$charw}] |
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415 | set w [expr {$w+$_vwidth+4}] |
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416 | } else { |
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417 | set _vwidth 0 |
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418 | } |
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419 | |
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420 | $itk_component(dial) configure -width $w -height $h |
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421 | } |
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422 | |
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423 | # ---------------------------------------------------------------------- |
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424 | # USAGE: _fixValue ?<name1> <name2> <op>? |
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425 | # |
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426 | # Invoked automatically whenever the -variable associated with this |
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427 | # widget is modified. Copies the value to the current settings for |
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428 | # the widget. |
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429 | # ---------------------------------------------------------------------- |
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430 | itcl::body Rappture::Flowdial::_fixValue {args} { |
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431 | if {"" == $itk_option(-variable)} { |
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432 | return |
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433 | } |
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434 | upvar #0 $itk_option(-variable) var |
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435 | _current [ms2rel $var] |
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436 | } |
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437 | |
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438 | # ---------------------------------------------------------------------- |
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439 | # USAGE: _fixOffsets |
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440 | # |
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441 | # ---------------------------------------------------------------------- |
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442 | itcl::body Rappture::Flowdial::_fixOffsets {} { |
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443 | if {0 == $itk_option(-offset)} { |
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444 | return |
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445 | } |
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446 | set _offset_pos $itk_option(-offset) |
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447 | set _offset_neg [expr -1*$_offset_pos] |
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448 | bind $itk_component(hull) <KeyPress-Left> [itcl::code $this _navigate $_offset_neg] |
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449 | bind $itk_component(hull) <KeyPress-Right> [itcl::code $this _navigate $_offset_pos] |
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450 | } |
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451 | |
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452 | itcl::body Rappture::Flowdial::ms2rel { value } { |
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453 | if { $max > $min } { |
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454 | return [expr {($value - $min) / ($max - $min)}] |
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455 | } |
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456 | return 0 |
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457 | } |
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458 | |
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459 | itcl::body Rappture::Flowdial::rel2ms { value } { |
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460 | return [expr $value * ($max - $min) + $min] |
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461 | } |
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462 | |
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463 | # ---------------------------------------------------------------------- |
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464 | # CONFIGURE: -thickness |
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465 | # ---------------------------------------------------------------------- |
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466 | itcl::configbody Rappture::Flowdial::thickness { |
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467 | _fixSize |
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468 | } |
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469 | |
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470 | # ---------------------------------------------------------------------- |
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471 | # CONFIGURE: -length |
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472 | # ---------------------------------------------------------------------- |
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473 | itcl::configbody Rappture::Flowdial::length { |
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474 | _fixSize |
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475 | } |
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476 | |
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477 | # ---------------------------------------------------------------------- |
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478 | # CONFIGURE: -font |
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479 | # ---------------------------------------------------------------------- |
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480 | itcl::configbody Rappture::Flowdial::font { |
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481 | _fixSize |
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482 | } |
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483 | |
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484 | # ---------------------------------------------------------------------- |
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485 | # CONFIGURE: -valuewidth |
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486 | # ---------------------------------------------------------------------- |
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487 | itcl::configbody Rappture::Flowdial::valuewidth { |
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488 | if {![string is integer $itk_option(-valuewidth)]} { |
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489 | error "bad value \"$itk_option(-valuewidth)\": should be integer" |
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490 | } |
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491 | _fixSize |
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492 | after cancel [itcl::code $this _redraw] |
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493 | after idle [itcl::code $this _redraw] |
---|
494 | } |
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495 | |
---|
496 | # ---------------------------------------------------------------------- |
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497 | # CONFIGURE: -foreground |
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498 | # ---------------------------------------------------------------------- |
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499 | itcl::configbody Rappture::Flowdial::foreground { |
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500 | after cancel [itcl::code $this _redraw] |
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501 | after idle [itcl::code $this _redraw] |
---|
502 | } |
---|
503 | |
---|
504 | # ---------------------------------------------------------------------- |
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505 | # CONFIGURE: -dialoutlinecolor |
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506 | # ---------------------------------------------------------------------- |
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507 | itcl::configbody Rappture::Flowdial::dialoutlinecolor { |
---|
508 | after cancel [itcl::code $this _redraw] |
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509 | after idle [itcl::code $this _redraw] |
---|
510 | } |
---|
511 | |
---|
512 | # ---------------------------------------------------------------------- |
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513 | # CONFIGURE: -dialfillcolor |
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514 | # ---------------------------------------------------------------------- |
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515 | itcl::configbody Rappture::Flowdial::dialfillcolor { |
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516 | after cancel [itcl::code $this _redraw] |
---|
517 | after idle [itcl::code $this _redraw] |
---|
518 | } |
---|
519 | |
---|
520 | # ---------------------------------------------------------------------- |
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521 | # CONFIGURE: -dialprogresscolor |
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522 | # ---------------------------------------------------------------------- |
---|
523 | itcl::configbody Rappture::Flowdial::dialprogresscolor { |
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524 | after cancel [itcl::code $this _redraw] |
---|
525 | after idle [itcl::code $this _redraw] |
---|
526 | } |
---|
527 | |
---|
528 | # ---------------------------------------------------------------------- |
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529 | # CONFIGURE: -linecolor |
---|
530 | # ---------------------------------------------------------------------- |
---|
531 | itcl::configbody Rappture::Flowdial::linecolor { |
---|
532 | after cancel [itcl::code $this _redraw] |
---|
533 | after idle [itcl::code $this _redraw] |
---|
534 | } |
---|
535 | |
---|
536 | # ---------------------------------------------------------------------- |
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537 | # CONFIGURE: -activelinecolor |
---|
538 | # ---------------------------------------------------------------------- |
---|
539 | itcl::configbody Rappture::Flowdial::activelinecolor { |
---|
540 | set val $itk_option(-activelinecolor) |
---|
541 | if {[catch {$val isa ::Rappture::Spectrum} valid] == 0 && $valid} { |
---|
542 | set _spectrum $val |
---|
543 | set _activecolor "" |
---|
544 | } elseif {[catch {winfo rgb $itk_component(hull) $val}] == 0} { |
---|
545 | set _spectrum "" |
---|
546 | set _activecolor $val |
---|
547 | } elseif {"" != $val} { |
---|
548 | error "bad value \"$val\": should be Spectrum object or color" |
---|
549 | } |
---|
550 | after cancel [itcl::code $this _redraw] |
---|
551 | after idle [itcl::code $this _redraw] |
---|
552 | } |
---|
553 | |
---|
554 | # ---------------------------------------------------------------------- |
---|
555 | # CONFIGURE: -knobimage |
---|
556 | # ---------------------------------------------------------------------- |
---|
557 | itcl::configbody Rappture::Flowdial::knobimage { |
---|
558 | if {[regexp {^image[0-9]+$} $itk_option(-knobimage)]} { |
---|
559 | set _knob $itk_option(-knobimage) |
---|
560 | } elseif {"" != $itk_option(-knobimage)} { |
---|
561 | set _knob [Rappture::icon $itk_option(-knobimage)] |
---|
562 | } else { |
---|
563 | set _knob "" |
---|
564 | } |
---|
565 | _fixSize |
---|
566 | |
---|
567 | after cancel [itcl::code $this _redraw] |
---|
568 | after idle [itcl::code $this _redraw] |
---|
569 | } |
---|
570 | |
---|
571 | # ---------------------------------------------------------------------- |
---|
572 | # CONFIGURE: -knobposition |
---|
573 | # ---------------------------------------------------------------------- |
---|
574 | itcl::configbody Rappture::Flowdial::knobposition { |
---|
575 | if {![regexp {^([nsew]+|center)@(top|middle|bottom)$} $itk_option(-knobposition)]} { |
---|
576 | error "bad value \"$itk_option(-knobposition)\": should be anchor@top|middle|bottom" |
---|
577 | } |
---|
578 | _fixSize |
---|
579 | |
---|
580 | after cancel [itcl::code $this _redraw] |
---|
581 | after idle [itcl::code $this _redraw] |
---|
582 | } |
---|
583 | |
---|
584 | # ---------------------------------------------------------------------- |
---|
585 | # CONFIGURE: -padding |
---|
586 | # This adds padding on left/right side of dial background. |
---|
587 | # ---------------------------------------------------------------------- |
---|
588 | itcl::configbody Rappture::Flowdial::padding { |
---|
589 | if {[catch {winfo pixels $itk_component(hull) $itk_option(-padding)}]} { |
---|
590 | error "bad value \"$itk_option(-padding)\": should be size in pixels" |
---|
591 | } |
---|
592 | } |
---|
593 | |
---|
594 | # ---------------------------------------------------------------------- |
---|
595 | # CONFIGURE: -valuepadding |
---|
596 | # This shifts min/max limits in by a fraction of the overall size. |
---|
597 | # ---------------------------------------------------------------------- |
---|
598 | itcl::configbody Rappture::Flowdial::valuepadding { |
---|
599 | if {![string is double $itk_option(-valuepadding)] |
---|
600 | || $itk_option(-valuepadding) < 0} { |
---|
601 | error "bad value \"$itk_option(-valuepadding)\": should be >= 0.0" |
---|
602 | } |
---|
603 | } |
---|
604 | |
---|
605 | # ---------------------------------------------------------------------- |
---|
606 | # CONFIGURE: -variable |
---|
607 | # ---------------------------------------------------------------------- |
---|
608 | itcl::configbody Rappture::Flowdial::variable { |
---|
609 | if {"" != $_variable} { |
---|
610 | upvar #0 $_variable var |
---|
611 | trace remove variable var write [itcl::code $this _fixValue] |
---|
612 | } |
---|
613 | |
---|
614 | set _variable $itk_option(-variable) |
---|
615 | |
---|
616 | if {"" != $_variable} { |
---|
617 | upvar #0 $_variable var |
---|
618 | trace add variable var write [itcl::code $this _fixValue] |
---|
619 | |
---|
620 | # sync to the current value of this variable |
---|
621 | if {[info exists var]} { |
---|
622 | _fixValue |
---|
623 | } |
---|
624 | } |
---|
625 | } |
---|
626 | |
---|
627 | # ---------------------------------------------------------------------- |
---|
628 | # CONFIGURE: -offset |
---|
629 | # ---------------------------------------------------------------------- |
---|
630 | itcl::configbody Rappture::Flowdial::offset { |
---|
631 | if {![string is double $itk_option(-offset)]} { |
---|
632 | error "bad value \"$itk_option(-offset)\": should be >= 0.0" |
---|
633 | } |
---|
634 | _fixOffsets |
---|
635 | } |
---|