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openmedialibrary_platform_w.../tcl/tix8.4.3/ResizeH.tcl

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# -*- mode: TCL; fill-column: 75; tab-width: 8; coding: iso-latin-1-unix -*-
#
# $Id: ResizeH.tcl,v 1.3 2001/12/09 05:04:02 idiscovery Exp $
#
# ResizeH.tcl --
#
# tixResizeHandle: A general purpose "resizing handle"
# widget. You can use it to resize pictures, widgets, etc. When
# using it to resize a widget, you can use the "attachwidget"
# command to attach it to a widget and it will handle all the
# events for you.
#
# Copyright (c) 1993-1999 Ioi Kim Lam.
# Copyright (c) 2000-2001 Tix Project Group.
#
# See the file "license.terms" for information on usage and redistribution
# of this file, and for a DISCLAIMER OF ALL WARRANTIES.
#
#
#
tixWidgetClass tixResizeHandle {
-classname TixResizeHandle
-superclass tixVResize
-method {
attachwidget detachwidget hide show
}
-flag {
-command -cursorfg -cursorbg -handlesize -hintcolor -hintwidth -x -y
}
-configspec {
{-command command Command ""}
{-cursorfg cursorFg CursorColor white}
{-cursorbg cursorBg CursorColor red}
{-handlesize handleSize HandleSize 6}
{-hintcolor hintColor HintColor red}
{-hintwidth hintWidth HintWidth 1}
{-x x X 0}
{-y y Y 0}
}
}
proc tixResizeHandle:InitWidgetRec {w} {
upvar #0 $w data
tixChainMethod $w InitWidgetRec
set data(shown) 0
set data(widget) ""
}
proc tixResizeHandle:ConstructWidget {w} {
upvar #0 $w data
tixChainMethod $w ConstructWidget
# Create the hints
#
set data(w_ht) $w:tix_priv_ht
set data(w_hb) $w:tix_priv_hb
set data(w_hl) $w:tix_priv_hl
set data(w_hr) $w:tix_priv_hr
frame $data(w_ht) -height $data(-hintwidth) -bg $data(-background)
frame $data(w_hb) -height $data(-hintwidth) -bg $data(-background)
frame $data(w_hl) -width $data(-hintwidth) -bg $data(-background)
frame $data(w_hr) -width $data(-hintwidth) -bg $data(-background)
# Create the corner resize handles
#
set data(w_r00) $w
# Windows don't like this
# $data(rootCmd) config\
# -cursor "top_left_corner $data(-cursorbg) $data(-cursorfg)"
$data(rootCmd) config -cursor top_left_corner
set data(w_r01) $w:tix_priv_01
set data(w_r10) $w:tix_priv_10
set data(w_r11) $w:tix_priv_11
frame $data(w_r01) -relief $data(-relief) -bd $data(-borderwidth) \
-cursor "bottom_left_corner"\
-bg $data(-background)
frame $data(w_r10) -relief $data(-relief) -bd $data(-borderwidth) \
-cursor "top_right_corner"\
-bg $data(-background)
frame $data(w_r11) -relief $data(-relief) -bd $data(-borderwidth) \
-cursor "bottom_right_corner"\
-bg $data(-background)
# Create the border resize handles
#
set data(w_bt) $w:tix_priv_bt
set data(w_bb) $w:tix_priv_bb
set data(w_bl) $w:tix_priv_bl
set data(w_br) $w:tix_priv_br
frame $data(w_bt) -relief $data(-relief) -bd $data(-borderwidth) \
-cursor "top_side"\
-bg $data(-background)
frame $data(w_bb) -relief $data(-relief) -bd $data(-borderwidth) \
-cursor "bottom_side"\
-bg $data(-background)
frame $data(w_bl) -relief $data(-relief) -bd $data(-borderwidth) \
-cursor "left_side"\
-bg $data(-background)
frame $data(w_br) -relief $data(-relief) -bd $data(-borderwidth) \
-cursor "right_side"\
-bg $data(-background)
}
proc tixResizeHandle:SetBindings {w} {
upvar #0 $w data
tixChainMethod $w SetBindings
bind $data(w_r00) <1> \
"tixResizeHandle:dragstart $w $data(w_r00) 1 %X %Y {1 1 -1 -1}"
bind $data(w_r01) <1> \
"tixResizeHandle:dragstart $w $data(w_r01) 1 %X %Y {1 0 -1 1}"
bind $data(w_r10) <1> \
"tixResizeHandle:dragstart $w $data(w_r10) 1 %X %Y {0 1 1 -1}"
bind $data(w_r11) <1> \
"tixResizeHandle:dragstart $w $data(w_r11) 1 %X %Y {0 0 1 1}"
bind $data(w_bt) <1> \
"tixResizeHandle:dragstart $w $data(w_bt) 1 %X %Y {0 1 0 -1}"
bind $data(w_bb) <1> \
"tixResizeHandle:dragstart $w $data(w_bb) 1 %X %Y {0 0 0 1}"
bind $data(w_bl) <1> \
"tixResizeHandle:dragstart $w $data(w_bl) 1 %X %Y {1 0 -1 0}"
bind $data(w_br) <1> \
"tixResizeHandle:dragstart $w $data(w_br) 1 %X %Y {0 0 1 0}"
foreach win [list \
$data(w_r00)\
$data(w_r01)\
$data(w_r10)\
$data(w_r11)\
$data(w_bt)\
$data(w_bb)\
$data(w_bl)\
$data(w_br)\
] {
bind $win <B1-Motion> "tixVResize:drag $w %X %Y"
bind $win <ButtonRelease-1> "tixVResize:dragend $w $win 0 %X %Y"
bind $win <Any-Escape> "tixVResize:dragend $w $win 1 0 0"
}
}
#----------------------------------------------------------------------
# Config Methods
#----------------------------------------------------------------------
proc tixResizeHandle:config-width {w value} {
tixWidgetDoWhenIdle tixResizeHandle:ComposeWindow $w
}
proc tixResizeHandle:config-height {w value} {
tixWidgetDoWhenIdle tixResizeHandle:ComposeWindow $w
}
proc tixResizeHandle:config-x {w value} {
tixWidgetDoWhenIdle tixResizeHandle:ComposeWindow $w
}
proc tixResizeHandle:config-y {w value} {
tixWidgetDoWhenIdle tixResizeHandle:ComposeWindow $w
}
#----------------------------------------------------------------------
# Public Methods
#----------------------------------------------------------------------
proc tixResizeHandle:dragstart {w win depress rootx rooty mrect} {
upvar #0 $w data
set wx $data(-x)
set wy $data(-y)
set ww $data(-width)
set wh $data(-height)
tixVResize:dragstart $w $win $depress $rootx $rooty \
[list $wx $wy $ww $wh] $mrect
}
# tixDeleteBindTag --
#
# Delete the bindtag(s) in the args list from the bindtags of the widget
#
proc tixDeleteBindTag {w args} {
if {![winfo exists $w]} {
return
}
set newtags ""
foreach tag [bindtags $w] {
if {[lsearch $args $tag] == -1} {
lappend newtags $tag
}
}
bindtags $w $newtags
}
proc tixAddBindTag {w args} {
bindtags $w [concat [bindtags $w] $args]
}
proc tixResizeHandle:attachwidget {w widget args} {
upvar #0 $w data
set opt(-move) 0
tixHandleOptions opt {-move} $args
if {$data(widget) != ""} {
tixDeleteBindTag $data(widget) TixResizeHandleTag:$w
}
set data(widget) $widget
if {$data(widget) != ""} {
# Just in case TixResizeHandleTag was already there
tixDeleteBindTag $data(widget) TixResizeHandleTag:$w
tixAddBindTag $data(widget) TixResizeHandleTag:$w
set data(-x) [winfo x $data(widget)]
set data(-y) [winfo y $data(widget)]
set data(-width) [winfo width $data(widget)]
set data(-height) [winfo height $data(widget)]
tixResizeHandle:show $w
tixResizeHandle:ComposeWindow $w
# Now set the bindings
#
if {$opt(-move)} {
bind TixResizeHandleTag:$w <1> \
"tixResizeHandle:Attach $w %X %Y"
bind TixResizeHandleTag:$w <B1-Motion> \
"tixResizeHandle:BMotion $w %X %Y"
bind TixResizeHandleTag:$w <Any-Escape> \
"tixResizeHandle:BRelease $w 1 %X %Y"
bind TixResizeHandleTag:$w <ButtonRelease-1>\
"tixResizeHandle:BRelease $w 0 %X %Y"
} else {
# if "move" is false, then the widget won't be moved as a whole --
# ResizeHandle will only move its sides
bind TixResizeHandleTag:$w <1> {;}
bind TixResizeHandleTag:$w <B1-Motion> {;}
bind TixResizeHandleTag:$w <Any-Escape> {;}
bind TixResizeHandleTag:$w <ButtonRelease-1> {;}
}
}
}
proc tixResizeHandle:detachwidget {w} {
upvar #0 $w data
if {$data(widget) != ""} {
tixDeleteBindTag $data(widget) TixResizeHandleTag:$w
}
tixResizeHandle:hide $w
}
proc tixResizeHandle:show {w} {
upvar #0 $w data
set data(shown) 1
raise $data(w_ht)
raise $data(w_hb)
raise $data(w_hl)
raise $data(w_hr)
raise $data(w_r00)
raise $data(w_r01)
raise $data(w_r10)
raise $data(w_r11)
raise $data(w_bt)
raise $data(w_bb)
raise $data(w_bl)
raise $data(w_br)
# tixCancleIdleTask tixResizeHandle:ComposeWindow $w
tixResizeHandle:ComposeWindow $w
}
proc tixResizeHandle:hide {w} {
upvar #0 $w data
if {!$data(shown)} {
return
}
set data(shown) 0
place forget $data(w_r00)
place forget $data(w_r01)
place forget $data(w_r10)
place forget $data(w_r11)
place forget $data(w_bt)
place forget $data(w_bb)
place forget $data(w_bl)
place forget $data(w_br)
place forget $data(w_ht)
place forget $data(w_hb)
place forget $data(w_hl)
place forget $data(w_hr)
}
proc tixResizeHandle:Destructor {w} {
upvar #0 $w data
if {$data(widget) != ""} {
tixDeleteBindTag $data(widget) TixResizeHandleTag:$w
}
catch {destroy $data(w_r01)}
catch {destroy $data(w_r10)}
catch {destroy $data(w_r11)}
catch {destroy $data(w_bt)}
catch {destroy $data(w_bb)}
catch {destroy $data(w_bl)}
catch {destroy $data(w_br)}
catch {destroy $data(w_ht)}
catch {destroy $data(w_hb)}
catch {destroy $data(w_hl)}
catch {destroy $data(w_hr)}
tixChainMethod $w Destructor
}
#----------------------------------------------------------------------
# Private Methods Dealing With Attached Widgets
#----------------------------------------------------------------------
proc tixResizeHandle:Attach {w rx ry} {
upvar #0 $w data
tixResizeHandle:dragstart $w $data(widget) 0 $rx $ry {1 1 0 0}
}
proc tixResizeHandle:BMotion {w rx ry} {
tixVResize:drag $w $rx $ry
}
proc tixResizeHandle:BRelease {w isAbort rx ry} {
upvar #0 $w data
tixVResize:dragend $w $data(widget) $isAbort $rx $ry
}
#----------------------------------------------------------------------
# Private Methods
#----------------------------------------------------------------------
proc tixResizeHandle:DrawTmpLines {w} {
upvar #0 $w data
# I've seen this error - mike
if {![info exists data(hf:x1)]} {return}
set x1 $data(hf:x1)
if {![info exists data(hf:y1)]} {return}
set y1 $data(hf:y1)
if {![info exists data(hf:x2)]} {return}
set x2 $data(hf:x2)
if {![info exists data(hf:y2)]} {return}
set y2 $data(hf:y2)
tixTmpLine $x1 $y1 $x2 $y1 $w
tixTmpLine $x1 $y2 $x2 $y2 $w
tixTmpLine $x1 $y1 $x1 $y2 $w
tixTmpLine $x2 $y1 $x2 $y2 $w
}
# Place the hint frame to indicate the changes
#
proc tixResizeHandle:SetHintFrame {w x1 y1 width height} {
upvar #0 $w data
# The four sides of the window
#
set x2 [expr "$x1+$width"]
set y2 [expr "$y1+$height"]
set rx [winfo rootx [winfo parent $w]]
set ry [winfo rooty [winfo parent $w]]
incr x1 $rx
incr y1 $ry
incr x2 $rx
incr y2 $ry
if {[info exists data(hf:x1)]} {
tixResizeHandle:DrawTmpLines $w
}
set data(hf:x1) $x1
set data(hf:y1) $y1
set data(hf:x2) $x2
set data(hf:y2) $y2
tixResizeHandle:DrawTmpLines $w
}
proc tixResizeHandle:ShowHintFrame {w} {
upvar #0 $w data
place forget $data(w_ht)
place forget $data(w_hb)
place forget $data(w_hl)
place forget $data(w_hr)
update
}
proc tixResizeHandle:HideHintFrame {w} {
upvar #0 $w data
tixResizeHandle:DrawTmpLines $w
unset data(hf:x1)
unset data(hf:y1)
unset data(hf:x2)
unset data(hf:y2)
}
proc tixResizeHandle:UpdateSize {w x y width height} {
upvar #0 $w data
set data(-x) $x
set data(-y) $y
set data(-width) $width
set data(-height) $height
tixResizeHandle:ComposeWindow $w
if {$data(widget) != ""} {
place $data(widget) -x $x -y $y -width $width -height $height
}
if {$data(-command) != ""} {
eval $data(-command) $x $y $width $height
}
}
proc tixResizeHandle:ComposeWindow {w} {
upvar #0 $w data
set px $data(-x)
set py $data(-y)
set pw $data(-width)
set ph $data(-height)
# Show the hint frames
#
set x1 $px
set y1 $py
set x2 [expr "$px+$pw"]
set y2 [expr "$py+$ph"]
place $data(w_ht) -x $x1 -y $y1 -width $pw -bordermode outside
place $data(w_hb) -x $x1 -y $y2 -width $pw -bordermode outside
place $data(w_hl) -x $x1 -y $y1 -height $ph -bordermode outside
place $data(w_hr) -x $x2 -y $y1 -height $ph -bordermode outside
# Set the four corner resize handles
#
set sz_2 [expr $data(-handlesize)/2]
set x1 [expr "$px - $sz_2"]
set y1 [expr "$py - $sz_2"]
set x2 [expr "$px - $sz_2" + $pw]
set y2 [expr "$py - $sz_2" + $ph]
place $data(w_r00) -x $x1 -y $y1 \
-width $data(-handlesize) -height $data(-handlesize)
place $data(w_r01) -x $x1 -y $y2\
-width $data(-handlesize) -height $data(-handlesize)
place $data(w_r10) -x $x2 -y $y1\
-width $data(-handlesize) -height $data(-handlesize)
place $data(w_r11) -x $x2 -y $y2\
-width $data(-handlesize) -height $data(-handlesize)
# Set the four border resize handles
#
set mx [expr "$px + $pw/2 - $sz_2"]
set my [expr "$py + $ph/2 - $sz_2"]
place $data(w_bt) -x $mx -y $y1 \
-width $data(-handlesize) -height $data(-handlesize)
place $data(w_bb) -x $mx -y $y2 \
-width $data(-handlesize) -height $data(-handlesize)
place $data(w_bl) -x $x1 -y $my \
-width $data(-handlesize) -height $data(-handlesize)
place $data(w_br) -x $x2 -y $my \
-width $data(-handlesize) -height $data(-handlesize)
}
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