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# PanedWin.tcl --
#
#       This file implements the TixPanedWindow widget
#
# Copyright (c) 1996, Expert Interface Technologies
#
# See the file "license.terms" for information on usage and redistribution
# of this file, and for a DISCLAIMER OF ALL WARRANTIES.
#
 
 
tixWidgetClass tixPanedWindow {
    -classname TixPanedWindow
    -superclass tixPrimitive
    -method {
        add delete forget manage panecget paneconfigure panes setsize
    }
    -flag {
        -command -dynamicgeometry -handleactivebg -handlebg -orient
        -orientation -panebd -paneborderwidth -panerelief
        -separatoractivebg -separatorbg
    }
    -static {
        -orientation
    }
    -configspec {
        {-command command Command ""}
        {-dynamicgeometry dynamicGeometry DynamicGeometry 1 tixVerifyBoolean}
        {-handleactivebg handleActiveBg HandleActiveBg #ececec}
        {-handlebg handleBg Background #d9d9d9}
        {-orientation orientation Orientation vertical}
        {-paneborderwidth paneBorderWidth PaneBorderWidth 1}
        {-panerelief paneRelief PaneRelief raised}
        {-separatoractivebg separatorActiveBg SeparatorActiveBg red}
        {-separatorbg separatorBg Background #d9d9d9}
    }
    -alias {
        {-panebd -paneborderwidth}
        {-orient -orientation}
    }
}
 
#----------------------------------------------------------------------
# ClassInitialization:
#----------------------------------------------------------------------
 
proc tixPanedWindow:InitWidgetRec {w} {
    upvar #0 $w data
 
    tixChainMethod $w InitWidgetRec
 
    set data(items)       ""
    set data(nItems)      0
    set data(totalsize)   0
    set data(movePending) 0
 
    set data(repack)      0
    set data(counter)     0
 
    set data(maxReqW)     1
    set data(maxReqH)     1
}
 
proc tixPanedWindow:ConstructWidget {w} {
    upvar #0 $w data
 
    tixChainMethod $w ConstructWidget
    # Do nothing
}
 
proc tixPanedWindow:SetBindings {w} {
    upvar #0 $w data
 
    tixChainMethod $w SetBindings
 
    bind $w <Configure> [list tixPanedWindow:MasterGeomProc $w ""]
}
 
#----------------------------------------------------------------------
# ConfigOptions:
#----------------------------------------------------------------------
proc tixPanedWindow:config-handlebg {w arg} {
    upvar #0 $w data
 
    for {set i 1} {$i < $data(nItems)} {incr i} {
        $data(btn,$i) config -bg $arg
    }
}
 
#----------------------------------------------------------------------
# PublicMethods:
#----------------------------------------------------------------------
 
 
# method: add
#
#    Adds a new pane into the PanedWindow.
#
# options -size -max -min -allowresize
#
proc tixPanedWindow:add {w name args} {
    upvar #0 $w data
 
    if {[winfo exists $w.$name] && !$data($name,forgotten)} {
        error "Pane $name is already managed"
    }
    # Step 1: Parse the options to get the children's size options
 
    # The default values
    #
    if [info exists data($name,forgotten)] {
        set option(-size)        $data($name,size)
        set option(-min)         $data($name,min)
        set option(-max)         $data($name,max)
        set option(-allowresize) $data($name,allowresize)
        set option(-expand)      $data($name,expand)
    } else {
        set option(-size)        0
        set option(-min)         0
        set option(-max)         100000
        set option(-allowresize) 1
        set option(-expand)      0
    }
 
    set option(-before)      ""
    set option(-after)       ""
    set option(-at)          ""
    set validOpts {-after -allowresize -at -before -expand -max -min -size}
 
    tixHandleOptions option $validOpts $args
 
    set data($name,size)        $option(-size)
    set data($name,rsize)       $option(-size)
    set data($name,min)         $option(-min)
    set data($name,max)         $option(-max)
    set data($name,allowresize) $option(-allowresize)
    set data($name,expand)      $option(-expand)
    set data($name,forgotten)   0
 
    if {$data($name,expand) < 0} {
        set data($name,expand) 0
    }
 
    # Step 2: Add the frame and the separator (if necessary)
    #
    if {![winfo exist $w.$name]} {
        # need to check because the frame may have been "forget'ten"
        #
        frame $w.$name -bd $data(-paneborderwidth) -relief $data(-panerelief)
    }
 
    if {$option(-at) != ""} {
        set at [tixGetInt $option(-at)]
        if {$at < 0} {
            set at 0
        }
    } elseif {$option(-after) != ""} {
        set index [lsearch -exact $data(items) $option(-after)]
        if {$index == -1} {
            error "Pane $option(-after) doesn't exists"
        } else {
            set at [incr index]
        }
    } elseif {$option(-before) != ""} {
        set index [lsearch -exact $data(items) $option(-before)]
        if {$index == -1} {
            error "Pane $option(-before) doesn't exists"
        }
        set at $index
    } else {
        set at end
    }
 
    set data(items) [linsert $data(items) $at $name]
    incr data(nItems)
 
    if {$data(nItems) > 1} {
        tixPanedWindow:AddSeparator $w
    }
    set data(w:$name) $w.$name
 
    # Step 3: Add the new frame. Adjust the window later (do when idle)
    #
    tixManageGeometry $w.$name "tixPanedWindow:ClientGeomProc $w"
    bind $w.$name <Configure> \
        [list tixPanedWindow:ClientGeomProc $w "" $w.$name]
 
    tixPanedWindow:RepackWhenIdle $w
 
    return $w.$name
}
 
proc tixPanedWindow:manage {w name args} {
    upvar #0 $w data
 
    if {![winfo exists $w.$name]} {
        error "Pane $name does not exist"
    }
    if {!$data($name,forgotten)} {
        error "Pane $name is already managed"
    }
    tixMapWindow $data(w:$name)
    eval tixPanedWindow:add $w [list $name] $args
}
 
proc tixPanedWindow:forget {w name} {
    upvar #0 $w data
 
    if {![winfo exists $w.$name]} {
        error "Pane $name does not exist"
    }
    if $data($name,forgotten) {
        # It has already been forgotten
        #
        return
    }
 
    set items ""
    foreach item $data(items) {
        if {$item != $name} {
            lappend items $item
        }
    }
    set data(items) $items
    incr data(nItems) -1
 
    set i $data(nItems)
    if {$i > 0} {
        destroy $data(btn,$i)
        destroy $data(sep,$i)
        unset data(btn,$i)
        unset data(sep,$i)
    }
    set data($name,forgotten) 1
 
    tixUnmapWindow $w.$name
 
    tixPanedWindow:RepackWhenIdle $w
}
 
proc tixPanedWindow:delete {w name} {
    upvar #0 $w data
 
    if {![winfo exists $w.$name]} {
        error "Pane $name does not exist"
    }
 
 
    if {!$data($name,forgotten)} {
        set items ""
        foreach item $data(items) {
            if {$item != $name} {
                lappend items $item
            }
        }
        set data(items) $items
        incr data(nItems) -1
 
        set i $data(nItems)
        if {$i > 0} {
            destroy $data(btn,$i)
            destroy $data(sep,$i)
            unset data(btn,$i)
            unset data(sep,$i)
        }
    }
    unset data($name,allowresize)
    unset data($name,expand)
    unset data($name,forgotten)
    unset data($name,max)
    unset data($name,min)
    unset data($name,rsize)
    unset data($name,size)
    unset data(w:$name)
    destroy $w.$name
 
    tixPanedWindow:RepackWhenIdle $w
}
 
proc tixPanedWindow:paneconfigure {w name args} {
    upvar #0 $w data
 
    if {![info exists data($name,size)]} {
        error "pane \"$name\" does not exist in $w"
    }
 
    set len [llength $args]
 
    if {$len == 0} {
        set value [$data(w:$name) configure]
        lappend value [list -allowresize "" "" "" $data($name,allowresize)]
        lappend value [list -expand "" "" "" $data($name,expand)]
        lappend value [list -max "" "" "" $data($name,max)]
        lappend value [list -min "" "" "" $data($name,min)]
        lappend value [list -size "" "" "" $data($name,size)]
        return $value
    }
 
    if {$len == 1} {
        case [lindex $args 0] {
            -allowresize {
                return [list -allowresize "" "" "" $data($name,allowresize)]
            }
            -expand {
                return [list -expand "" "" "" $data($name,expand)]
            }
            -min {
                return [list -min "" "" "" $data($name,min)]
            }
            -max {
                return [list -max "" "" "" $data($name,max)]
            }
            -size {
                return [list -size "" "" "" $data($name,size)]
            }
            default {
                return [$data(w:$name) configure [lindex $args 0]]
            }
        }
    }
 
    # By default handle each of the options
    #
    set option(-allowresize) $data($name,allowresize)
    set option(-expand)      $data($name,expand)
    set option(-min)         $data($name,min)
    set option(-max)         $data($name,max)
    set option(-size)        $data($name,size)
 
    tixHandleOptions -nounknown option {-allowresize -expand -max -min -size} \
        $args
 
    #
    # the widget options
    set new_args ""
    tixForEach {flag value} $args {
        case $flag {
            {-expand -min -max -allowresize -size} {
 
            }
            default {
                lappend new_args $flag
                lappend new_args $value
            }
        }
    }
 
    if {[llength $new_args] >= 2} {
        eval $data(w:$name) configure $new_args
    }
 
    #
    # The add-on options
    set data($name,allowresize) $option(-allowresize)
    set data($name,expand)      $option(-expand)
    set data($name,max)         $option(-max)
    set data($name,min)         $option(-min)
    set data($name,rsize)       $option(-size)
    set data($name,size)        $option(-size)
 
    # 
    # Integrity check
    if {$data($name,expand) < 0} {
        set data($name,expand) 0
    }
    if {$data($name,size) < $data($name,min)} {
        set data($name,size) $data($name,min)
    }
    if {$data($name,size) > $data($name,max)} {
        set data($name,size) $data($name,max)
    }
 
    tixPanedWindow:RepackWhenIdle $w
    return ""
}
 
proc tixPanedWindow:panecget {w name option} {
    upvar #0 $w data
 
    if {![info exists data($name,size)]} {
        error "pane \"$name\" does not exist in $w"
    }
 
    case $option {
        {-min -max -allowresize -size} {
            regsub \\\- $option "" option
            return "$data($name,$option)"
        }
        default {
            return [$data(w:$name) cget $option]
        }
    }
}
 
# return the name of all panes
proc tixPanedWindow:panes {w} {
    upvar #0 $w data
 
    return $data(items)
}
 
# set the size of a pane, specifying which direction it should
# grow/shrink
proc tixPanedWindow:setsize {w item size {direction next}} {
    upvar #0 $w data
 
    set posn [lsearch $data(items) $item]
    if {$posn == -1} {
        error "pane \"$item\" does not exist"
    }
 
    set diff [expr $size - $data($item,size)]
    if {$diff == 0} {
        return
    }
 
    if {$posn == 0 && $direction == "prev"} {
        set direction next
    }
    if {$posn == [expr $data(nItems)-1] && $direction == "next"} {
        set direction prev
    }
 
    if {$data(-orientation) == "vertical"} {
        set rx [winfo rooty $data(w:$item)]
    } else {
        set rx [winfo rootx $data(w:$item)]
    }
    if {$direction == "prev"} {
        set rx [expr $rx - $diff]
    } elseif {$data(-orientation) == "vertical"} {
        set rx [expr $rx + [winfo height $data(w:$item)] + $diff]
        incr posn
    } else {
        set rx [expr $rx + [winfo width $data(w:$item)] + $diff]
        incr posn
    }
 
    # Set up the panedwin in a proper state
    #
    tixPanedWindow:BtnDown $w $posn 1
    tixPanedWindow:BtnMove $w $posn $rx 1
    tixPanedWindow:BtnUp $w $posn 1
 
    return $data(items)
}
 
#----------------------------------------------------------------------
# PrivateMethods:
#----------------------------------------------------------------------
 
proc tixPanedWindow:AddSeparator {w} {
    global tcl_platform
 
    upvar #0 $w data
 
    set n [expr $data(nItems)-1]
 
    # CYGNUS LOCAL: On Windows, use relief ridge and a thicker line.
    if {$tcl_platform(platform) == "windows"} then {
      set relief "ridge"
      set thickness 4
    } else {
      set relief "sunken"
      set thickness 2
    }
    if {$data(-orientation) == "vertical"} {
        set data(sep,$n) [frame $w.sep$n -relief $relief \
            -bd 1 -height $thickness -width 10000 -bg $data(-separatorbg)]
    } else {
        set data(sep,$n) [frame $w.sep$n -relief $relief \
            -bd 1 -width $thickness -height 10000 -bg $data(-separatorbg)]
    }
 
    set data(btn,$n) [frame $w.btn$n -relief raised \
        -bd 1 -width 9 -height 9 \
        -bg $data(-handlebg)]
 
    if {$data(-orientation) == "vertical"} {
        set cursor sb_v_double_arrow
    } else {
        set cursor sb_h_double_arrow
    }
    $data(sep,$n) config -cursor $cursor
    $data(btn,$n) config -cursor $cursor
 
    foreach wid "$data(btn,$n) $data(sep,$n)" {
        bind $wid \
            <ButtonPress-1>   "tixPanedWindow:BtnDown $w $n"
        bind $wid \
            <ButtonRelease-1> "tixPanedWindow:BtnUp   $w $n"
        bind $wid \
            <Any-Enter>       "tixPanedWindow:HighlightBtn $w $n"
        bind $wid \
            <Any-Leave>       "tixPanedWindow:DeHighlightBtn $w $n"
    }
 
    if {$data(-orientation) == "vertical"} {
        bind  $data(btn,$n) <B1-Motion> \
            "tixPanedWindow:BtnMove $w $n %Y"
    } else {
        bind  $data(btn,$n) <B1-Motion> \
            "tixPanedWindow:BtnMove $w $n %X"
    }
 
    if {$data(-orientation) == "vertical"} {
#       place $data(btn,$n) -relx 0.90 -y [expr "$data(totalsize)-5"]
#       place $data(sep,$n) -x 0 -y [expr "$data(totalsize)-1"] -relwidth 1
    } else {
#       place $data(btn,$n) -rely 0.90 -x [expr "$data(totalsize)-5"]
#       place $data(sep,$n) -y 0 -x [expr "$data(totalsize)-1"] -relheight 1
    }
}
 
proc tixPanedWindow:BtnDown {w item {fake 0}} {
    upvar #0 $w data
 
    if {$data(-orientation) == "vertical"} {
        set spec -height
    } else {
        set spec -width
    }
 
    if {!$fake} {
        for {set i 1} {$i < $data(nItems)} {incr i} {
            $data(sep,$i) config -bg $data(-separatoractivebg) $spec 1
        }
        update idletasks
        $data(btn,$item) config -relief sunken
    }
 
    tixPanedWindow:GetMotionLimit $w $item $fake
 
    if {!$fake} {
        grab -global $data(btn,$item)
    }
    set data(movePending) 0
}
 
proc tixPanedWindow:Min2 {a b} {
    if {$a < $b} {
        return $a
    } else {
        return $b
    }
}
 
proc tixPanedWindow:GetMotionLimit {w item fake} {
    upvar #0 $w data
 
    set curBefore 0
    set minBefore 0
    set maxBefore 0
 
    for {set i 0} {$i < $item} {incr i} {
        set name [lindex $data(items) $i]
        incr curBefore $data($name,size)
        incr minBefore $data($name,min)
        incr maxBefore $data($name,max)
    }
 
    set curAfter 0
    set minAfter 0
    set maxAfter 0
    while {$i < $data(nItems)} {
        set name [lindex $data(items) $i]
        incr curAfter $data($name,size)
        incr minAfter $data($name,min)
        incr maxAfter $data($name,max)
        incr i
    }
 
    set beforeToGo [tixPanedWindow:Min2 \
        [expr "$curBefore-$minBefore"] [expr "$maxAfter-$curAfter"]]
 
    set afterToGo [tixPanedWindow:Min2 \
        [expr "$curAfter-$minAfter"] [expr "$maxBefore-$curBefore"]]
 
    set data(beforeLimit) [expr "$curBefore-$beforeToGo"]
    set data(afterLimit)  [expr "$curBefore+$afterToGo"]
    set data(curSize)     $curBefore
 
    if {!$fake} {
        tixPanedWindow:PlotHandles $w 1
    }
}
 
# Compress the motion so that update is quick even on slow machines
#
# rootp = root position (either rootx or rooty)
proc tixPanedWindow:BtnMove {w item rootp {fake 0}} {
    upvar #0 $w data
 
    set data(rootp) $rootp
 
    if {$fake} {
        tixPanedWindow:BtnMoveCompressed $w $item $fake
    } else {
        if {$data(movePending) == 0} {
            after 2 tixPanedWindow:BtnMoveCompressed $w $item
            set data(movePending) 1
        }
    }
}
 
proc tixPanedWindow:BtnMoveCompressed {w item {fake 0}} {
    if {![winfo exists $w]} {
        return
    }
 
    upvar #0 $w data
 
    if {$data(-orientation) == "vertical"} {
        set p [expr $data(rootp)-[winfo rooty $w]]
    } else {
        set p [expr $data(rootp)-[winfo rootx $w]]
    }
 
    if {$p == $data(curSize)} {
        set data(movePending) 0
        return
    }
 
    if {$p < $data(beforeLimit)} {
        set p $data(beforeLimit)
    }
    if {$p >= $data(afterLimit)} {
        set p $data(afterLimit)
    }
    tixPanedWindow:CalculateChange $w $item $p $fake
 
    if {!$fake} {
        # Force the redraw to happen
        #
        update idletasks
    }
    set data(movePending) 0
}
 
# Calculate the change in response to mouse motions
#
proc tixPanedWindow:CalculateChange {w item p {fake 0}} {
    upvar #0 $w data
 
    if {$p < $data(curSize)} {
        tixPanedWindow:MoveBefore $w $item $p
    } elseif {$p > $data(curSize)} {
        tixPanedWindow:MoveAfter $w $item $p
    }
 
    if {!$fake} {
        tixPanedWindow:PlotHandles $w 1
    }
}
 
proc tixPanedWindow:MoveBefore {w item p} {
    upvar #0 $w data
 
    set n [expr "$data(curSize)-$p"]
 
    # Shrink the frames before
    #
    set from [expr $item-1]
    set to   0
    tixPanedWindow:Iterate $w $from $to tixPanedWindow:Shrink $n
 
    # Adjust the frames after
    #
    set from $item
    set to   [expr "$data(nItems)-1"]
    tixPanedWindow:Iterate $w $from $to tixPanedWindow:Grow $n
 
    set data(curSize) $p
}
 
proc tixPanedWindow:MoveAfter {w item p} {
    upvar #0 $w data
 
    set n    [expr "$p-$data(curSize)"]
 
    # Shrink the frames after
    #
    set from $item
    set to   [expr "$data(nItems)-1"]
    tixPanedWindow:Iterate $w $from $to tixPanedWindow:Shrink $n
 
    # Graw the frame before
    #
    set from [expr $item-1]
    set to   0
    tixPanedWindow:Iterate $w $from $to tixPanedWindow:Grow $n
 
    set data(curSize) $p
}
 
proc tixPanedWindow:CancleLines {w} {
    upvar #0 $w data
 
    if [info exists data(lines)] {
        foreach line $data(lines) {
            set x1 [lindex $line 0]
            set y1 [lindex $line 1]
            set x2 [lindex $line 2]
            set y2 [lindex $line 3]
 
            tixTmpLine $x1 $y1 $x2 $y2 $w
        }
 
        catch {unset data(lines)}
    }
}
 
proc tixPanedWindow:PlotHandles {w transient} {
    global tcl_platform
 
    upvar #0 $w data
 
    set totalsize 0
    set i 0
 
    if {$data(-orientation) == "vertical"} {
        set btnp [expr [winfo width $w]-13]
    } else {
        set h [winfo height $w]
        if {$h > 18} {
            set btnp 9
        } else {
            set btnp [expr $h-9]
        }
    }
 
    set firstpane [lindex $data(items) 0]
    set totalsize $data($firstpane,size)
 
    if {$transient} {
        tixPanedWindow:CancleLines $w
        set data(lines) ""
    }
 
    for {set i 1} {$i < $data(nItems)} {incr i} {
        if {! $transient} {
            if {$data(-orientation) == "vertical"} {
                # CYGNUS LOCAL: Don't use buttons on Windows
                if {$tcl_platform(platform) != "windows"} then {
                    place $data(btn,$i) -x $btnp -y [expr "$totalsize-4"]
                }
                place $data(sep,$i) -x 0 -y [expr "$totalsize-1"] -relwidth 1
            } else {
                # CYGNUS LOCAL: Don't use buttons on Windows
                if {$tcl_platform(platform) != "windows"} then {
                    place $data(btn,$i) -y $btnp -x [expr "$totalsize-5"]
                }
                place $data(sep,$i) -y 0 -x [expr "$totalsize-1"] -relheight 1
            }
        } else {
            if {$data(-orientation) == "vertical"} {
                set x1 [winfo rootx $w]
                set x2 [expr $x1 + [winfo width $w]]
                set y  [expr $totalsize-1+[winfo rooty $w]]
 
                tixTmpLine $x1 $y $x2 $y $w
                lappend data(lines) [list $x1 $y $x2 $y]
            } else {
                set y1 [winfo rooty $w]
                set y2 [expr $y1 + [winfo height $w]]
                set x  [expr $totalsize-1+[winfo rootx $w]]
 
                tixTmpLine $x $y1 $x $y2 $w
                lappend data(lines) [list $x $y1 $x $y2]
            }
        }
 
        set name [lindex $data(items) $i]
        incr totalsize $data($name,size)
    }
}
 
proc tixPanedWindow:BtnUp {w item {fake 0}} {
    upvar #0 $w data
 
    if {!$fake} {
        tixPanedWindow:CancleLines $w
    }
 
    tixPanedWindow:UpdateSizes $w
 
    if {!$fake} {
        $data(btn,$item) config -relief raised
        grab release $data(btn,$item)
    }
}
 
 
proc tixPanedWindow:HighlightBtn {w item} {
    upvar #0 $w data
 
    $data(btn,$item) config -background $data(-handleactivebg)
}
 
proc tixPanedWindow:DeHighlightBtn {w item} {
    upvar #0 $w data
 
    $data(btn,$item) config -background $data(-handlebg)
}
 
#----------------------------------------------------------------------
#
#
# Geometry management routines
#
#
#----------------------------------------------------------------------
 
# update the sizes of each pane according to the data($name,size) variables
#
proc tixPanedWindow:UpdateSizes {w} {
    global tcl_platform
 
    upvar #0 $w data
 
    set data(totalsize) 0
 
    set mw [winfo width  $w]
    set mh [winfo height $w]
 
    for {set i 0} {$i < $data(nItems)} {incr i} {
        set name [lindex $data(items) $i]
 
        if {$data($name,size) > 0} {
            if {$data(-orientation) == "vertical"} {
                tixMoveResizeWindow $w.$name 0 $data(totalsize) \
                    $mw $data($name,size)
                tixMapWindow $w.$name
                raise $w.$name
            } else {
                tixMoveResizeWindow $w.$name $data(totalsize) 0 \
                    $data($name,size) $mh
                tixMapWindow $w.$name
                raise $w.$name
            }
        } else {
            tixUnmapWindow $w.$name
        }
        incr data(totalsize) $data($name,size)
    }
 
    # Reset the color and width of the separator
    #
    if {$data(-orientation) == "vertical"} {
        set spec -height
    } else {
        set spec -width
    }
 
    # CYGNUS LOCAL: On Windows, use a thicker line.
    if {$tcl_platform(platform) == "windows"} then {
        set thickness 4
    } else {
        set thickness 2
    }
 
    for {set i 1} {$i < $data(nItems)} {incr i} {
        $data(sep,$i) config -bg $data(-separatorbg) $spec $thickness
        raise $data(sep,$i)
        raise $data(btn,$i)
    }
 
 
    # Invoke the callback command
    #
    if {$data(-command) != ""} {
        set sizes ""
        foreach item $data(items) {
            lappend sizes $data($item,size)
        }
        set bind(specs) ""
        tixEvalCmdBinding $w $data(-command) bind [list $sizes]
    }
}
 
proc tixPanedWindow:GetNaturalSizes {w} {
    upvar #0 $w data
 
    set data(totalsize) 0
    set totalreq 0
 
    if {$data(-orientation) == "vertical"} {
        set majorspec height
        set minorspec width
    } else {
        set majorspec width
        set minorspec height
    }
 
    set minorsize 0
    foreach name $data(items) {
        if {[winfo manager $w.$name] != "tixGeometry"} {
            error "Geometry management error: pane \"$w.$name\" cannot be managed by \"[winfo manager $w.$name]\"\nhint: delete the line \"[winfo manager $w.$name] $w.$name ...\" from your program"
        }
 
        # set the minor size
        #
        set req_minor [winfo req$minorspec $w.$name]
 
        if {$req_minor > $minorsize} {
            set minorsize $req_minor
        }
 
        # Check the natural size against the max, min requirements.
        # Change the natural size if necessary
        #
        if {$data($name,size) <= 1} {
            set data($name,size) [winfo req$majorspec $w.$name]
        }
 
        if {$data($name,size) > 1} {
            # If we get zero maybe the widget was not initialized yet ...
            #
            # %% hazard : what if the window is really 1x1?
            #
            if {$data($name,size) < $data($name,min)} {
                set data($name,size) $data($name,min)
            }
            if {$data($name,size) > $data($name,max)} {
                set data($name,size) $data($name,max)
            }
        }
 
        # kludge: because a frame always returns req size of {1,1} before
        # the packer processes it, we do the following to mark the
        # pane as "size unknown"
        #
#       if {$data($name,size) == 1 && ![winfo ismapped $w.$name]} {
#           set data($name,size) 0
#       }
 
        # Add up the total size
        #
        incr data(totalsize) $data($name,size)
 
        # Find out the request size
        #
        if {$data($name,rsize) == 0} {
            set rsize [winfo req$majorspec $w.$name]
        } else {
            set rsize $data($name,rsize)
        }
 
        if {$rsize < $data($name,min)} {
            set rsize $data($name,min)
        }
        if {$rsize > $data($name,max)} {
            set rsize $data($name,max)
        }
 
        incr totalreq $rsize
    }
 
    if {$data(-orientation) == "vertical"} {
        return "$minorsize $totalreq"
    } else {
        return "$totalreq $minorsize"
    }
}
 
#--------------------------------------------------
# Handling resize
#--------------------------------------------------
proc tixPanedWindow:ClientGeomProc {w type client} {
    tixPanedWindow:RepackWhenIdle $w
}
 
#
# This monitor the sizes of the master window
#
proc tixPanedWindow:MasterGeomProc {w master} {
    tixPanedWindow:RepackWhenIdle $w
}
 
proc tixPanedWindow:RepackWhenIdle {w} {
    if {![winfo exist $w]} {
        return
    }
    upvar #0 $w data
 
    if {$data(repack) == 0} {
        tixWidgetDoWhenIdle tixPanedWindow:Repack $w
        set data(repack) 1
    }
}
 
#
# This monitor the sizes of the master window
#
proc tixPanedWindow:Repack {w} {
    upvar #0 $w data
 
    # Calculate the desired size of the master
    #
    set dim [tixPanedWindow:GetNaturalSizes $w]
 
    if {$data(-width) != 0} {
        set mreqw $data(-width)
    } else {
        set mreqw [lindex $dim 0]
    }
 
    if {$data(-height) != 0} {
        set mreqh $data(-height)
    } else {
        set mreqh [lindex $dim 1]
    }
 
    if !$data(-dynamicgeometry) {
        if {$mreqw < $data(maxReqW)} {
            set mreqw $data(maxReqW)
        }
        if {$mreqh < $data(maxReqH)} {
            set mreqh $data(maxReqH)
        }
        set data(maxReqW) $mreqw
        set data(maxReqH) $mreqh
    }
    if {$mreqw != [winfo reqwidth $w] || $mreqh != [winfo reqheight $w] } {
        if {![info exists data(counter)]} {
            set data(counter) 0
        }
        if {$data(counter) < 50} {
            incr data(counter)
            tixGeometryRequest $w $mreqw $mreqh
            tixWidgetDoWhenIdle tixPanedWindow:Repack $w
            set data(repack) 1
            return
        }
    }
 
    set data(counter) 0
 
    if {$data(nItems) == 0} {
        set data(repack) 0
        return
    }
 
    tixWidgetDoWhenIdle tixPanedWindow:DoRepack $w
}
 
proc tixPanedWindow:DoRepack {w} {
    upvar #0 $w data
 
    if {$data(-orientation) == "vertical"} {
        set newSize [winfo height $w]
    } else {
        set newSize [winfo width $w]
    }
 
    if {$newSize <= 1} {
        # Probably this window is too small to see anyway
        # %%Kludge: I don't know if this always work.
        #
        set data(repack) 0
        return
    }
 
    set totalExp 0
    foreach name $data(items) {
        set totalExp [expr $totalExp + $data($name,expand)]
    }
 
    if {$newSize > $data(totalsize)} {
        # Grow
        #
        set toGrow [expr "$newSize-$data(totalsize)"]
 
        set p [llength $data(items)]
        foreach name $data(items) {
            set toGrow [tixPanedWindow:xGrow $w $name $toGrow $totalExp $p]
            if {$toGrow > 0} {
                set totalExp [expr $totalExp-$data($name,expand)]
                incr p -1
            } else {
                break
            }
        }
    } else {
        # Shrink
        #
        set toShrink [expr "$data(totalsize)-$newSize"]
 
        set usedSize 0
        foreach name $data(items) {
            set toShrink [tixPanedWindow:xShrink $w $name $toShrink \
                $totalExp $newSize $usedSize]
            if {$toShrink > 0} {
                set totalExp [expr $totalExp-$data($name,expand)]
                incr usedSize $data($name,size)
            } else {
                break
            }
        }
    }
 
    tixPanedWindow:UpdateSizes $w
    tixPanedWindow:PlotHandles $w 0
 
    set data(repack) 0
}
 
#--------------------------------------------------
# Shrink and grow items
#--------------------------------------------------
# 
#   toGrow: how much free area to grow into
#        p: == 1 if $name is the last in the list of items
# totalExp: used to calculate the amount of the free area that this
#           window can grow into
#
proc tixPanedWindow:xGrow {w name toGrow totalExp p} {
    upvar #0 $w data
 
    if {$p == 1} {
        set canGrow $toGrow
    } else {
        if {$totalExp == 0} {
            set canGrow 0
        } else {
            set canGrow [expr int($toGrow * $data($name,expand) / $totalExp)]
        }
    }
 
    if {[expr $canGrow + $data($name,size)] > $data($name,max)} {
        set canGrow [expr $data($name,max) - $data($name,size)]
    }
 
    incr data($name,size) $canGrow
    incr toGrow -$canGrow
 
    return $toGrow
}
 
proc tixPanedWindow:xShrink {w name toShrink totalExp newSize usedSize} {
    upvar #0 $w data
 
    if {$totalExp == 0} {
        set canShrink 0
    } else {
        set canShrink [expr int($toShrink * $data($name,expand) / $totalExp)]
    }
 
    if {[expr $data($name,size) - $canShrink] < $data($name,min)} {
        set canShrink [expr $data($name,size) -$data($name,min)]
    }
    if {[expr $usedSize + $data($name,size) - $canShrink] > $newSize} {
        set data($name,size) [expr $newSize - $usedSize]
        return 0
    } else {
        incr data($name,size) -$canShrink
        incr toShrink -$canShrink
 
        return $toShrink
    }
}
 
#--------------------------------------------------
# Shrink and grow items
#--------------------------------------------------
proc tixPanedWindow:Shrink {w name n} {
    upvar #0 $w data
 
    set canShrink [expr "$data($name,size) - $data($name,min)"]
 
    if {$canShrink > $n} {
        incr data($name,size) -$n
        return 0
    } elseif {$canShrink > 0} {
        set data($name,size) $data($name,min)
        incr n -$canShrink
    }
    return $n
}
 
proc tixPanedWindow:Grow {w name n} {
    upvar #0 $w data
 
    set canGrow [expr "$data($name,max) - $data($name,size)"]
 
    if {$canGrow > $n} {
        incr data($name,size) $n
        return 0
    } elseif {$canGrow > 0} {
        set data($name,size) $data($name,max)
        incr n -$canGrow
    }
 
    return $n
}
 
proc tixPanedWindow:Iterate {w from to proc n} {
    upvar #0 $w data
 
    if {$from <= $to} {
        for {set i $from} {$i <= $to} {incr i} {
            set n [$proc $w [lindex $data(items) $i] $n]
            if {$n == 0} {
                break
            }
        }
    } else {
        for {set i $from} {$i >= $to} {incr i -1} {
            set n [$proc $w [lindex $data(items) $i] $n]
            if {$n == 0} {
                break
            }
        }
    }
}
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[/] [or1k/] [trunk/] [insight/] [tix/] [library/] [PanedWin.tcl] - Blame information for rev 1782

Line No.	Rev	Author	Line
1	578	markom	`# PanedWin.tcl --`
2			`#`
3			`# This file implements the TixPanedWindow widget`
4			`#`
5			`# Copyright (c) 1996, Expert Interface Technologies`
6			`#`
7			`# See the file "license.terms" for information on usage and redistribution`
8			`# of this file, and for a DISCLAIMER OF ALL WARRANTIES.`
9			`#`
10
11
12			`tixWidgetClass tixPanedWindow {`
13			`-classname TixPanedWindow`
14			`-superclass tixPrimitive`
15			`-method {`
16			`add delete forget manage panecget paneconfigure panes setsize`
17			`}`
18			`-flag {`
19			`-command -dynamicgeometry -handleactivebg -handlebg -orient`
20			`-orientation -panebd -paneborderwidth -panerelief`
21			`-separatoractivebg -separatorbg`
22			`}`
23			`-static {`
24			`-orientation`
25			`}`
26			`-configspec {`
27			`{-command command Command ""}`
28			`{-dynamicgeometry dynamicGeometry DynamicGeometry 1 tixVerifyBoolean}`
29			`{-handleactivebg handleActiveBg HandleActiveBg #ececec}`
30			`{-handlebg handleBg Background #d9d9d9}`
31			`{-orientation orientation Orientation vertical}`
32			`{-paneborderwidth paneBorderWidth PaneBorderWidth 1}`
33			`{-panerelief paneRelief PaneRelief raised}`
34			`{-separatoractivebg separatorActiveBg SeparatorActiveBg red}`
35			`{-separatorbg separatorBg Background #d9d9d9}`
36			`}`
37			`-alias {`
38			`{-panebd -paneborderwidth}`
39			`{-orient -orientation}`
40			`}`