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BWidget-1.2
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panedw.tcl
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2000-11-02
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# ------------------------------------------------------------------------------
# panedw.tcl
# This file is part of Unifix BWidget Toolkit
# ------------------------------------------------------------------------------
# Index of commands:
# - PanedWindow::create
# - PanedWindow::configure
# - PanedWindow::cget
# - PanedWindow::add
# - PanedWindow::getframe
# - PanedWindow::_destroy
# - PanedWindow::_beg_move_sash
# - PanedWindow::_move_sash
# - PanedWindow::_end_move_sash
# - PanedWindow::_realize
# ------------------------------------------------------------------------------
namespace eval PanedWindow {
namespace eval Pane {
Widget::declare PanedWindow::Pane {
{-minsize Int 0 0 {=0}}
{-weight Int 1 0 {=0}}
}
}
Widget::declare PanedWindow {
{-side Enum top 1 {top left bottom right}}
{-width Int 10 1 {=6 ""}}
{-pad Int 4 1 {=0 ""}}
{-background TkResource "" 0 frame}
{-bg Synonym -background}
}
variable _panedw
proc ::PanedWindow { path args } { return [eval PanedWindow::create $path $args] }
proc use {} {}
}
# ------------------------------------------------------------------------------
# Command PanedWindow::create
# ------------------------------------------------------------------------------
proc PanedWindow::create { path args } {
variable _panedw
Widget::init PanedWindow $path $args
frame $path -background [Widget::getoption $path -background]
set _panedw($path,nbpanes) 0
bind $path <Configure> "PanedWindow::_realize $path %w %h"
bind $path <Destroy> "PanedWindow::_destroy $path"
rename $path ::$path:cmd
proc ::$path { cmd args } "return \[eval PanedWindow::\$cmd $path \$args\]"
return $path
}
# ------------------------------------------------------------------------------
# Command PanedWindow::configure
# ------------------------------------------------------------------------------
proc PanedWindow::configure { path args } {
variable _panedw
set res [Widget::configure $path $args]
if { [Widget::hasChanged $path -background bg] && $_panedw($path,nbpanes) > 0 } {
$path:cmd configure -background $bg
$path.f0 configure -background $bg
for {set i 1} {$i < $_panedw($path,nbpanes)} {incr i} {
set frame $path.sash$i
$frame configure -background $bg
$frame.sep configure -background $bg
$frame.but configure -background $bg
$path.f$i configure -background $bg
$path.f$i.frame configure -background $bg
}
}
return $res
}
# ------------------------------------------------------------------------------
# Command PanedWindow::cget
# ------------------------------------------------------------------------------
proc PanedWindow::cget { path option } {
return [Widget::cget $path $option]
}
# ------------------------------------------------------------------------------
# Command PanedWindow::add
# ------------------------------------------------------------------------------
proc PanedWindow::add { path args } {
variable _panedw
set num $_panedw($path,nbpanes)
Widget::init PanedWindow::Pane $path.f$num $args
set bg [Widget::getoption $path -background]
set wbut [Widget::getoption $path -width]
set pad [Widget::getoption $path -pad]
set width [expr {$wbut+2*$pad}]
set side [Widget::getoption $path -side]
if { $num > 0 } {
set frame [frame $path.sash$num -relief flat -bd 0 -highlightthickness 0 \
-width $width -height $width -bg $bg]
set sep [frame $frame.sep -bd 1 -relief raised -highlightthickness 0 -bg $bg]
set but [frame $frame.but -bd 1 -relief raised -highlightthickness 0 -bg $bg \
-width $wbut -height $wbut]
if { ![string compare $side "top"] || ![string compare $side "bottom"] } {
place $sep -relx 0.5 -y 0 -width 2 -relheight 1.0 -anchor n
if { ![string compare $side "top"] } {
place $but -relx 0.5 -y [expr {6+$wbut/2}] -anchor c
} else {
place $but -relx 0.5 -rely 1.0 -y [expr {-6-$wbut/2}] -anchor c
}
$but configure -cursor sb_h_double_arrow
grid $frame -column [expr 2*$num-1] -row 0 -sticky ns
grid columnconfigure $path [expr 2*$num-1] -weight 0
} else {
place $sep -x 0 -rely 0.5 -height 2 -relwidth 1.0 -anchor w
if { ![string compare $side "left"] } {
place $but -rely 0.5 -x [expr {6+$wbut/2}] -anchor c
} else {
place $but -rely 0.5 -relx 1.0 -x [expr {-6-$wbut/2}] -anchor c
}
$but configure -cursor sb_v_double_arrow
grid $frame -row [expr 2*$num-1] -column 0 -sticky ew
grid rowconfigure $path [expr 2*$num-1] -weight 0
}
bind $but <ButtonPress-1> "PanedWindow::_beg_move_sash $path $num %X %Y"
} else {
if { ![string compare $side "top"] || ![string compare $side "bottom"] } {
grid rowconfigure $path 0 -weight 1
} else {
grid columnconfigure $path 0 -weight 1
}
}
set pane [frame $path.f$num -bd 0 -relief flat -highlightthickness 0 -bg $bg]
set user [frame $path.f$num.frame -bd 0 -relief flat -highlightthickness 0 -bg $bg]
if { ![string compare $side "top"] || ![string compare $side "bottom"] } {
grid $pane -column [expr 2*$num] -row 0 -sticky nsew
grid columnconfigure $path [expr 2*$num] \
-weight [Widget::getoption $path.f$num -weight]
} else {
grid $pane -row [expr 2*$num] -column 0 -sticky nsew
grid rowconfigure $path [expr 2*$num] \
-weight [Widget::getoption $path.f$num -weight]
}
pack $user -fill both -expand yes
incr _panedw($path,nbpanes)
return $user
}
# ------------------------------------------------------------------------------
# Command PanedWindow::getframe
# ------------------------------------------------------------------------------
proc PanedWindow::getframe { path index } {
if { [winfo exists $path.f$index.frame] } {
return $path.f$index.frame
}
}
# ------------------------------------------------------------------------------
# Command PanedWindow::_destroy
# ------------------------------------------------------------------------------
proc PanedWindow::_destroy { path } {
variable _panedw
for {set i 0} {$i < $_panedw($path,nbpanes)} {incr i} {
Widget::destroy $path.f$i
}
unset _panedw($path,nbpanes)
Widget::destroy $path
rename $path {}
}
# ------------------------------------------------------------------------------
# Command PanedWindow::_beg_move_sash
# ------------------------------------------------------------------------------
proc PanedWindow::_beg_move_sash { path num x y } {
variable _panedw
set fprev $path.f[expr $num-1]
set fnext $path.f$num
set wsash [expr [Widget::getoption $path -width] + 2*[Widget::getoption $path -pad]]
$path.sash$num.but configure -relief sunken
set top [toplevel $path.sash -borderwidth 1 -relief raised]
set minszg [Widget::getoption $fprev -minsize]
set minszd [Widget::getoption $fnext -minsize]
set side [Widget::getoption $path -side]
if { ![string compare $side "top"] || ![string compare $side "bottom"] } {
$top configure -cursor sb_h_double_arrow
set h [winfo height $path]
set yr [winfo rooty $path.sash$num]
set xmin [expr $wsash/2+[winfo rootx $fprev]+$minszg]
set xmax [expr -$wsash/2-1+[winfo rootx $fnext]+[winfo width $fnext]-$minszd]
wm overrideredirect $top 1
wm geom $top "2x${h}+$x+$yr"
update idletasks
grab set $top
bind $top <ButtonRelease-1> "PanedWindow::_end_move_sash $path $top $num $xmin $xmax %X rootx width"
bind $top <Motion> "PanedWindow::_move_sash $top $xmin $xmax %X +%%d+$yr"
_move_sash $top $xmin $xmax $x "+%d+$yr"
} else {
$top configure -cursor sb_v_double_arrow
set w [winfo width $path]
set xr [winfo rootx $path.sash$num]
set ymin [expr $wsash/2+[winfo rooty $fprev]+$minszg]
set ymax [expr -$wsash/2-1+[winfo rooty $fnext]+[winfo height $fnext]-$minszd]
wm overrideredirect $top 1
wm geom $top "${w}x2+$xr+$y"
update idletasks
grab set $top
bind $top <ButtonRelease-1> "PanedWindow::_end_move_sash $path $top $num $ymin $ymax %Y rooty height"
bind $top <Motion> "PanedWindow::_move_sash $top $ymin $ymax %Y +$xr+%%d"
_move_sash $top $ymin $ymax $y "+$xr+%d"
}
}
# ------------------------------------------------------------------------------
# Command PanedWindow::_move_sash
# ------------------------------------------------------------------------------
proc PanedWindow::_move_sash { top min max v form } {
if { $v < $min } {
set v $min
} elseif { $v > $max } {
set v $max
}
wm geom $top [format $form $v]
}
# ------------------------------------------------------------------------------
# Command PanedWindow::_end_move_sash
# ------------------------------------------------------------------------------
proc PanedWindow::_end_move_sash { path top num min max v rootv size } {
variable _panedw
destroy $top
if { $v < $min } {
set v $min
} elseif { $v > $max } {
set v $max
}
set fprev $path.f[expr $num-1]
set fnext $path.f$num
$path.sash$num.but configure -relief raised
set wsash [expr [Widget::getoption $path -width] + 2*[Widget::getoption $path -pad]]
set dv [expr $v-[winfo $rootv $path.sash$num]-$wsash/2]
set w1 [winfo $size $fprev]
set w2 [winfo $size $fnext]
for {set i 0} {$i < $_panedw($path,nbpanes)} {incr i} {
if { $i == $num-1} {
$fprev configure -$size [expr [winfo $size $fprev]+$dv]
} elseif { $i == $num } {
$fnext configure -$size [expr [winfo $size $fnext]-$dv]
} else {
$path.f$i configure -$size [winfo $size $path.f$i]
}
}
}
# ------------------------------------------------------------------------------
# Command PanedWindow::_realize
# ------------------------------------------------------------------------------
proc PanedWindow::_realize { path width height } {
variable _panedw
set x 0
set y 0
set hc [winfo reqheight $path]
set hmax 0
for {set i 0} {$i < $_panedw($path,nbpanes)} {incr i} {
$path.f$i configure \
-width [winfo reqwidth $path.f$i.frame] \
-height [winfo reqheight $path.f$i.frame]
place $path.f$i.frame -x 0 -y 0 -relwidth 1 -relheight 1
}
bind $path <Configure> {}
}