[116] | 1 | # A Notebook widget for Tcl/Tk |
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| 2 | # $Revision: 116 $ $Date: 2009-12-04 23:00:40 +0000 (Fri, 04 Dec 2009) $ |
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| 3 | # |
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| 4 | # This version have been modified by Brian Toby to |
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| 5 | # define Notebook:resize |
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| 6 | # deactivate tabs for notebook pages that have "-state disabled" |
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| 7 | # define a -command configuration option |
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| 8 | # |
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| 9 | # Copyright (C) 1996,1997,1998 D. Richard Hipp |
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| 10 | # |
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| 11 | # This library is free software; you can redistribute it and/or |
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| 12 | # modify it under the terms of the GNU Library General Public |
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| 13 | # License as published by the Free Software Foundation; either |
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| 14 | # version 2 of the License, or (at your option) any later version. |
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| 15 | # |
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| 16 | # This library is distributed in the hope that it will be useful, |
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| 17 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 18 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 19 | # Library General Public License for more details. |
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| 20 | # |
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| 21 | # You should have received a copy of the GNU Library General Public |
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| 22 | # License along with this library; if not, write to the |
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| 23 | # Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
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| 24 | # Boston, MA 02111-1307, USA. |
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| 25 | # |
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| 26 | # Author contact information: |
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| 27 | # drh@acm.org |
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| 28 | # http://www.hwaci.com/drh/ |
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| 29 | |
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| 30 | |
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| 31 | # |
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| 32 | # Create a new notebook widget |
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| 33 | # |
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| 34 | proc Notebook:create {w args} { |
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| 35 | global Notebook |
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| 36 | set Notebook($w,width) 400 |
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| 37 | set Notebook($w,height) 300 |
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| 38 | set Notebook($w,pages) {} |
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| 39 | set Notebook($w,top) 0 |
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| 40 | set Notebook($w,pad) 5 |
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| 41 | set Notebook($w,fg,on) black |
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| 42 | set Notebook($w,fg,off) grey50 |
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| 43 | canvas $w -bd 0 -highlightthickness 0 -takefocus 0 |
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| 44 | set Notebook($w,bg) [$w cget -bg] |
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| 45 | bind $w <1> "Notebook:click $w %x %y" |
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| 46 | bind $w <Configure> "Notebook:scheduleExpand $w" |
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| 47 | eval Notebook:config $w $args |
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| 48 | set cnt 0 |
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| 49 | # initalize commands and state for each page |
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| 50 | foreach p $Notebook($w,pages) { |
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| 51 | set Notebook($w,t$cnt,state) 1 |
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| 52 | set Notebook($w,c$cnt,command) {} |
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| 53 | incr cnt |
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| 54 | } |
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| 55 | } |
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| 56 | |
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| 57 | # |
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| 58 | # Change configuration options for the notebook widget |
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| 59 | # |
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| 60 | proc Notebook:config {w args} { |
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| 61 | global Notebook |
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| 62 | foreach {tag value} $args { |
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| 63 | switch -- $tag { |
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| 64 | -width { |
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| 65 | set Notebook($w,width) $value |
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| 66 | } |
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| 67 | -height { |
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| 68 | set Notebook($w,height) $value |
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| 69 | } |
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| 70 | -pages { |
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| 71 | set Notebook($w,pages) $value |
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| 72 | # reinitalize commands and state for each page |
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| 73 | set cnt 0 |
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| 74 | foreach p $Notebook($w,pages) { |
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| 75 | set Notebook($w,t$cnt,state) 1 |
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| 76 | set Notebook($w,c$cnt,command) {} |
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| 77 | incr cnt |
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| 78 | } |
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| 79 | } |
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| 80 | -pad { |
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| 81 | set Notebook($w,pad) $value |
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| 82 | } |
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| 83 | -bg { |
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| 84 | set Notebook($w,bg) $value |
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| 85 | } |
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| 86 | -fg { |
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| 87 | set Notebook($w,fg,on) $value |
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| 88 | } |
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| 89 | -disabledforeground { |
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| 90 | set Notebook($w,fg,off) $value |
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| 91 | } |
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| 92 | } |
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| 93 | } |
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| 94 | |
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| 95 | # |
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| 96 | # After getting new configuration values, reconstruct the widget |
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| 97 | # |
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| 98 | $w delete all |
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| 99 | set Notebook($w,x1) $Notebook($w,pad) |
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| 100 | set Notebook($w,x2) [expr $Notebook($w,x1)+2] |
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| 101 | set Notebook($w,x3) [expr $Notebook($w,x2)+$Notebook($w,width)] |
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| 102 | set Notebook($w,x4) [expr $Notebook($w,x3)+2] |
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| 103 | set Notebook($w,y1) [expr $Notebook($w,pad)+2] |
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| 104 | set Notebook($w,y2) [expr $Notebook($w,y1)+2] |
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| 105 | set Notebook($w,y5) [expr $Notebook($w,y1)+30] |
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| 106 | set Notebook($w,y6) [expr $Notebook($w,y5)+2] |
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| 107 | set Notebook($w,y3) [expr $Notebook($w,y6)+$Notebook($w,height)] |
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| 108 | set Notebook($w,y4) [expr $Notebook($w,y3)+2] |
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| 109 | set x $Notebook($w,x1) |
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| 110 | set cnt 0 |
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| 111 | set y7 [expr $Notebook($w,y1)+10] |
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| 112 | foreach p $Notebook($w,pages) { |
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| 113 | set Notebook($w,p$cnt,x5) $x |
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| 114 | set id [$w create text 0 0 -text $p -anchor nw -tags "p$cnt t$cnt"] |
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| 115 | set bbox [$w bbox $id] |
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| 116 | set width [lindex $bbox 2] |
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| 117 | $w move $id [expr $x+10] $y7 |
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| 118 | $w create line \ |
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| 119 | $x $Notebook($w,y5)\ |
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| 120 | $x $Notebook($w,y2) \ |
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| 121 | [expr $x+2] $Notebook($w,y1) \ |
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| 122 | [expr $x+$width+16] $Notebook($w,y1) \ |
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| 123 | -width 2 -fill white -tags p$cnt |
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| 124 | $w create line \ |
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| 125 | [expr $x+$width+16] $Notebook($w,y1) \ |
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| 126 | [expr $x+$width+18] $Notebook($w,y2) \ |
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| 127 | [expr $x+$width+18] $Notebook($w,y5) \ |
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| 128 | -width 2 -fill black -tags p$cnt |
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| 129 | set x [expr $x+$width+20] |
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| 130 | set Notebook($w,p$cnt,x6) [expr $x-2] |
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| 131 | if {![winfo exists $w.f$cnt]} { |
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| 132 | frame $w.f$cnt -bd 0 |
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| 133 | } |
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| 134 | $w.f$cnt config -bg $Notebook($w,bg) |
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| 135 | place $w.f$cnt -x $Notebook($w,x2) -y $Notebook($w,y6) \ |
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| 136 | -width $Notebook($w,width) -height $Notebook($w,height) |
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| 137 | incr cnt |
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| 138 | } |
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| 139 | $w create line \ |
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| 140 | $Notebook($w,x1) [expr $Notebook($w,y5)-2] \ |
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| 141 | $Notebook($w,x1) $Notebook($w,y3) \ |
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| 142 | -width 2 -fill white |
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| 143 | $w create line \ |
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| 144 | $Notebook($w,x1) $Notebook($w,y3) \ |
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| 145 | $Notebook($w,x2) $Notebook($w,y4) \ |
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| 146 | $Notebook($w,x3) $Notebook($w,y4) \ |
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| 147 | $Notebook($w,x4) $Notebook($w,y3) \ |
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| 148 | $Notebook($w,x4) $Notebook($w,y6) \ |
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| 149 | $Notebook($w,x3) $Notebook($w,y5) \ |
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| 150 | -width 2 -fill black |
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| 151 | $w config -width [expr $Notebook($w,x4)+$Notebook($w,pad)] \ |
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| 152 | -height [expr $Notebook($w,y4)+$Notebook($w,pad)] \ |
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| 153 | -bg $Notebook($w,bg) |
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| 154 | set top $Notebook($w,top) |
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| 155 | set Notebook($w,top) -1 |
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| 156 | Notebook:raise.page $w $top |
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| 157 | } |
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| 158 | |
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| 159 | # |
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| 160 | # This routine is called whenever the mouse-button is pressed over |
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| 161 | # the notebook. It determines if any page should be raised and raises |
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| 162 | # that page. |
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| 163 | # |
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| 164 | proc Notebook:click {w x y} { |
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| 165 | global Notebook |
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| 166 | if {$y<$Notebook($w,y1) || $y>$Notebook($w,y6)} return |
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| 167 | set N [llength $Notebook($w,pages)] |
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| 168 | for {set i 0} {$i<$N} {incr i} { |
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| 169 | if {$x>=$Notebook($w,p$i,x5) && $x<=$Notebook($w,p$i,x6)} { |
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| 170 | Notebook:raise.page $w $i |
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| 171 | break |
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| 172 | } |
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| 173 | } |
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| 174 | } |
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| 175 | |
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| 176 | # |
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| 177 | # For internal use only. This procedure raised the n-th page of |
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| 178 | # the notebook |
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| 179 | # |
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| 180 | proc Notebook:raise.page {w n} { |
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| 181 | global Notebook |
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| 182 | if {$n<0 || $n>=[llength $Notebook($w,pages)]} return |
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| 183 | if {! $Notebook($w,t$n,state)} return |
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| 184 | set top $Notebook($w,top) |
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| 185 | if {$top>=0 && $top<[llength $Notebook($w,pages)]} { |
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| 186 | $w move p$top 0 2 |
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| 187 | } |
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| 188 | $w move p$n 0 -2 |
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| 189 | $w delete topline |
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| 190 | if {$n>0} { |
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| 191 | $w create line \ |
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| 192 | $Notebook($w,x1) $Notebook($w,y6) \ |
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| 193 | $Notebook($w,x2) $Notebook($w,y5) \ |
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| 194 | $Notebook($w,p$n,x5) $Notebook($w,y5) \ |
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| 195 | $Notebook($w,p$n,x5) [expr $Notebook($w,y5)-2] \ |
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| 196 | -width 2 -fill white -tags topline |
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| 197 | } |
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| 198 | $w create line \ |
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| 199 | $Notebook($w,p$n,x6) [expr $Notebook($w,y5)-2] \ |
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| 200 | $Notebook($w,p$n,x6) $Notebook($w,y5) \ |
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| 201 | -width 2 -fill white -tags topline |
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| 202 | $w create line \ |
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| 203 | $Notebook($w,p$n,x6) $Notebook($w,y5) \ |
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| 204 | $Notebook($w,x3) $Notebook($w,y5) \ |
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| 205 | -width 2 -fill white -tags topline |
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| 206 | set Notebook($w,top) $n |
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| 207 | raise $w.f$n |
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| 208 | if {$Notebook($w,c$n,command) != {}} { |
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| 209 | if [catch {eval uplevel #0 {$Notebook($w,c$n,command)} } errmsg] { |
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| 210 | puts "Notebook command error: $errmsg" |
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| 211 | } |
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| 212 | } |
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| 213 | } |
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| 214 | |
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| 215 | # |
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| 216 | # Change the page-specific configuration options for the notebook |
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| 217 | # |
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| 218 | proc Notebook:pageconfig {w name args} { |
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| 219 | global Notebook |
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| 220 | set i [lsearch $Notebook($w,pages) $name] |
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| 221 | if {$i<0} return |
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| 222 | foreach {tag value} $args { |
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| 223 | switch -- $tag { |
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| 224 | -state { |
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| 225 | if {"$value"=="disabled"} { |
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| 226 | $w itemconfig t$i -fill $Notebook($w,fg,off) |
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| 227 | set Notebook($w,t$i,state) 0 |
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| 228 | } else { |
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| 229 | $w itemconfig t$i -fill $Notebook($w,fg,on) |
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| 230 | set Notebook($w,t$i,state) 1 |
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| 231 | } |
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| 232 | } |
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| 233 | -command { |
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| 234 | set Notebook($w,c$i,command) $value |
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| 235 | } |
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| 236 | -onexit { |
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| 237 | set Notebook($w,p$i,onexit) $value |
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| 238 | } |
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| 239 | } |
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| 240 | } |
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| 241 | } |
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| 242 | |
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| 243 | # |
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| 244 | # This procedure raises a notebook page given its name. But first |
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| 245 | # we check the "onexit" procedure for the current page (if any) and |
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| 246 | # if it returns false, we don't allow the raise to proceed. |
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| 247 | # |
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| 248 | proc Notebook:raise {w name} { |
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| 249 | global Notebook |
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| 250 | set i [lsearch $Notebook($w,pages) $name] |
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| 251 | if {$i<0} return |
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| 252 | if {[info exists Notebook($w,p$i,onexit)]} { |
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| 253 | set onexit $Notebook($w,p$i,onexit) |
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| 254 | if {"$onexit"!="" && [eval uplevel #0 $onexit]!=0} { |
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| 255 | Notebook:raise.page $w $i |
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| 256 | } |
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| 257 | } else { |
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| 258 | Notebook:raise.page $w $i |
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| 259 | } |
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| 260 | } |
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| 261 | |
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| 262 | # |
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| 263 | # Return the frame associated with a given page of the notebook. |
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| 264 | # |
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| 265 | proc Notebook:frame {w name} { |
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| 266 | global Notebook |
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| 267 | set i [lsearch $Notebook($w,pages) $name] |
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| 268 | if {$i>=0} { |
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| 269 | return $w.f$i |
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| 270 | } else { |
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| 271 | return {} |
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| 272 | } |
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| 273 | } |
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| 274 | |
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| 275 | # |
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| 276 | # Try to resize the notebook to the next time we become idle. |
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| 277 | # |
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| 278 | proc Notebook:scheduleExpand w { |
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| 279 | global Notebook |
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| 280 | if {[info exists Notebook($w,expand)]} return |
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| 281 | set Notebook($w,expand) 1 |
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| 282 | after idle "Notebook:expand $w" |
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| 283 | } |
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| 284 | |
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| 285 | # |
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| 286 | # Resize the notebook to fit inside its containing widget. |
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| 287 | # |
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| 288 | proc Notebook:expand w { |
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| 289 | global Notebook |
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| 290 | set wi [expr [winfo width $w]-($Notebook($w,pad)*2+4)] |
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| 291 | set hi [expr [winfo height $w]-($Notebook($w,pad)*2+36)] |
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| 292 | Notebook:config $w -width $wi -height $hi |
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| 293 | catch {unset Notebook($w,expand)} |
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| 294 | } |
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| 295 | |
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| 296 | # |
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| 297 | # Resize the notebook so that it fits the contents. |
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| 298 | # |
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| 299 | proc Notebook:resize w { |
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| 300 | update idletasks |
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| 301 | set maxw [lindex [$w bbox all] 2] |
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| 302 | set deltah 0 |
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| 303 | foreach page [place slaves $w] { |
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| 304 | set h [expr [winfo reqheight $page] - [winfo height $page]] |
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| 305 | set deltah [expr ($deltah > $h) ? $deltah : $h] |
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| 306 | set wid [winfo reqwidth $page] |
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| 307 | set maxw [expr ($maxw > $wid) ? $maxw : $wid] |
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| 308 | } |
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| 309 | $w config -width $maxw -height [expr [winfo height $w] + $deltah] |
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| 310 | } |
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