You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
361 lines
7.6 KiB
361 lines
7.6 KiB
# -*- mode: TCL; fill-column: 75; tab-width: 8; coding: iso-latin-1-unix -*-
|
|
#
|
|
# $Id: CObjView.tcl,v 1.3 2001/12/09 05:04:02 idiscovery Exp $
|
|
#
|
|
# CObjView.tcl --
|
|
#
|
|
# This file implements the Canvas Object View widget. This is a base
|
|
# class of IconView. It implements:
|
|
|
|
# (1) Automatic placement/adjustment of the scrollbars according
|
|
# to the canvas objects inside the canvas subwidget. The
|
|
# scrollbars are adjusted so that the canvas is just large
|
|
# enough to see all the objects.
|
|
#
|
|
# (2) D+D bindings of the objects (%% not implemented)
|
|
#
|
|
# (3) Keyboard traversal of the objects (%% not implemented). By the
|
|
# virtual method :SelectObject.
|
|
#
|
|
#
|
|
# 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 tixCObjView {
|
|
-classname TixCObjView
|
|
-superclass tixScrolledWidget
|
|
-method {
|
|
adjustscrollregion
|
|
}
|
|
-flag {
|
|
-xscrollincrement -yscrollincrement
|
|
}
|
|
-static {
|
|
}
|
|
-configspec {
|
|
{-xscrollincrement xScrollIncrement ScrollIncrement 10}
|
|
{-yscrollincrement yScrollIncrement ScrollIncrement 10}
|
|
}
|
|
-default {
|
|
{.scrollbar auto}
|
|
{*borderWidth 1}
|
|
{*canvas.background #c3c3c3}
|
|
{*canvas.highlightBackground #d9d9d9}
|
|
{*canvas.relief sunken}
|
|
{*canvas.takeFocus 1}
|
|
{*Scrollbar.takeFocus 0}
|
|
}
|
|
-forcecall {
|
|
-scrollbar
|
|
}
|
|
}
|
|
|
|
proc tixCObjView:ConstructWidget {w} {
|
|
upvar #0 $w data
|
|
|
|
tixChainMethod $w ConstructWidget
|
|
|
|
set data(w:canvas) \
|
|
[canvas $w.canvas]
|
|
set data(w:hsb) \
|
|
[scrollbar $w.hsb -orient horizontal]
|
|
set data(w:vsb) \
|
|
[scrollbar $w.vsb -orient vertical]
|
|
|
|
set data(pw:client) $data(w:canvas)
|
|
|
|
set data(xorig) 0
|
|
set data(yorig) 0
|
|
|
|
set data(sx1) 0
|
|
set data(sy1) 0
|
|
set data(sx2) 0
|
|
set data(sy2) 0
|
|
}
|
|
|
|
proc tixCObjView:SetBindings {w} {
|
|
upvar #0 $w data
|
|
|
|
tixChainMethod $w SetBindings
|
|
|
|
# %% scan/drag of canvas??
|
|
#
|
|
# $data(w:canvas) config \
|
|
# -xscrollcommand "tixCObjView:XScroll $w"\
|
|
# -yscrollcommand "tixCObjView:YScroll $w"
|
|
|
|
$data(w:hsb) config -command "tixCObjView:UserScroll $w x"
|
|
$data(w:vsb) config -command "tixCObjView:UserScroll $w y"
|
|
}
|
|
|
|
#----------------------------------------------------------------------
|
|
#
|
|
# option configs
|
|
#----------------------------------------------------------------------
|
|
proc tixCObjView:config-takefocus {w value} {
|
|
upvar #0 $w data
|
|
|
|
$data(w:canvas) config -takefocus $value
|
|
}
|
|
|
|
#----------------------------------------------------------------------
|
|
#
|
|
# Widget commands
|
|
#----------------------------------------------------------------------
|
|
proc tixCObjView:adjustscrollregion {w} {
|
|
upvar #0 $w data
|
|
|
|
set cW [tixWinWidth $data(w:canvas)]
|
|
set cH [tixWinHeight $data(w:canvas)]
|
|
|
|
tixCObjView:GetScrollRegion $w $cW $cH 1 1
|
|
}
|
|
|
|
#----------------------------------------------------------------------
|
|
#
|
|
# Private Methods
|
|
#----------------------------------------------------------------------
|
|
|
|
proc tixCObjView:GeometryInfo {w cW cH} {
|
|
upvar #0 $w data
|
|
|
|
set bd \
|
|
[expr [$data(w:canvas) cget -bd] + [$data(w:canvas) cget -highlightthickness]]
|
|
|
|
incr cW -[expr {2*$bd}]
|
|
incr cH -[expr {2*$bd}]
|
|
|
|
return [tixCObjView:GetScrollRegion $w $cW $cH 0 0]
|
|
}
|
|
|
|
proc tixCObjView:PlaceWindow {w} {
|
|
upvar #0 $w data
|
|
|
|
set cW [tixWinWidth $data(w:canvas)]
|
|
set cH [tixWinHeight $data(w:canvas)]
|
|
|
|
tixCObjView:GetScrollRegion $w $cW $cH 1 0
|
|
|
|
tixChainMethod $w PlaceWindow
|
|
}
|
|
|
|
proc tixCObjView:GetScrollRegion {w cW cH setReg callConfig} {
|
|
upvar #0 $w data
|
|
|
|
set x1max $data(xorig)
|
|
set y1max $data(yorig)
|
|
|
|
set x2min [expr {$x1max + $cW - 1}]
|
|
set y2min [expr {$y1max + $cH - 1}]
|
|
|
|
set bbox [$data(w:canvas) bbox all]
|
|
|
|
if {$bbox == ""} {
|
|
set bbox {0 0 1 1}
|
|
}
|
|
|
|
set x1 [lindex $bbox 0]
|
|
set y1 [lindex $bbox 1]
|
|
set x2 [lindex $bbox 2]
|
|
set y2 [lindex $bbox 3]
|
|
|
|
set bd \
|
|
[expr [$data(w:canvas) cget -bd] + [$data(w:canvas) cget -highlightthickness]]
|
|
|
|
incr x1 -$bd
|
|
incr y1 -$bd
|
|
incr x2 -$bd
|
|
incr y2 -$bd
|
|
|
|
if {$x1 > $x1max} {
|
|
set x1 $x1max
|
|
}
|
|
if {$y1 > $y1max} {
|
|
set y1 $y1max
|
|
}
|
|
if {$x2 < $x2min} {
|
|
set x2 $x2min
|
|
}
|
|
if {$y2 < $y2min} {
|
|
set y2 $y2min
|
|
}
|
|
|
|
set data(sx1) $x1
|
|
set data(sy1) $y1
|
|
set data(sx2) $x2
|
|
set data(sy2) $y2
|
|
|
|
set sW [expr {$x2 - $x1 + 1}]
|
|
set sH [expr {$y2 - $y1 + 1}]
|
|
|
|
# puts "sregion = {$x1 $y1 $x2 $y2}; sW=$sW; cW=$cW"
|
|
|
|
if {$sW > $cW} {
|
|
set hsbSpec {0.5 1}
|
|
} else {
|
|
set hsbSpec {0 1}
|
|
}
|
|
if {$sH > $cH} {
|
|
set vsbSpec {0.5 1}
|
|
} else {
|
|
set vsbSpec {0 1}
|
|
}
|
|
|
|
if $setReg {
|
|
tixCObjView:SetScrollBars $w $cW $cH $sW $sH
|
|
}
|
|
if $callConfig {
|
|
tixWidgetDoWhenIdle tixScrolledWidget:Configure $w
|
|
}
|
|
|
|
return [list $hsbSpec $vsbSpec]
|
|
}
|
|
|
|
#xF = xFirst
|
|
#
|
|
proc tixCObjView:SetScrollBars {w cW cH sW sH} {
|
|
upvar #0 $w data
|
|
|
|
# puts "$data(xorig) <--> $data(sx1)"
|
|
|
|
set xF [expr ($data(xorig).0-$data(sx1).0)/$sW.0]
|
|
set xL [expr $cW.0/$sW.0 + $xF]
|
|
|
|
set yF [expr ($data(yorig).0-$data(sy1).0)/$sH.0]
|
|
set yL [expr $cH.0/$sH.0 + $yF]
|
|
|
|
# puts "$xF $xL : $yF $yL"
|
|
$data(w:hsb) set $xF $xL
|
|
$data(w:vsb) set $yF $yL
|
|
}
|
|
|
|
proc tixCObjView:UserScroll {w dir type args} {
|
|
upvar #0 $w data
|
|
|
|
$data(w:canvas) config -xscrollincrement 1 -yscrollincrement 1
|
|
|
|
case $dir {
|
|
x {
|
|
set n $data(xorig)
|
|
set orig $data(xorig)
|
|
set s1 $data(sx1)
|
|
set total [expr {$data(sx2)-$data(sx1)}]
|
|
set page [tixWinWidth $data(w:canvas)]
|
|
set min $data(sx1)
|
|
set max [expr {$data(sx1)+$total-$page}]
|
|
set inc $data(-xscrollincrement)
|
|
}
|
|
y {
|
|
set n $data(yorig)
|
|
set orig $data(yorig)
|
|
set s1 $data(sy1)
|
|
set total [expr {$data(sy2)-$data(sy1)}]
|
|
set page [tixWinHeight $data(w:canvas)]
|
|
set min $data(sy1)
|
|
set max [expr {$data(sy1)+$total-$page}]
|
|
set inc $data(-yscrollincrement)
|
|
}
|
|
}
|
|
|
|
case $type {
|
|
scroll {
|
|
set amt [lindex $args 0]
|
|
set unit [lindex $args 1]
|
|
|
|
case $unit {
|
|
units {
|
|
incr n [expr int($inc)*$amt]
|
|
}
|
|
pages {
|
|
incr n [expr {$page*$amt}]
|
|
}
|
|
}
|
|
}
|
|
moveto {
|
|
set first [lindex $args 0]
|
|
set n [expr round($first*$total)+$s1]
|
|
}
|
|
}
|
|
|
|
if {$n < $min} {
|
|
set n $min
|
|
}
|
|
if {$n > $max} {
|
|
set n $max
|
|
}
|
|
|
|
# puts "n=$n min=$min max=$max"
|
|
|
|
case $dir {
|
|
x {
|
|
$data(w:canvas) xview scroll [expr {$n-$orig}] units
|
|
set data(xorig) $n
|
|
}
|
|
y {
|
|
$data(w:canvas) yview scroll [expr {$n-$orig}] units
|
|
set data(yorig) $n
|
|
}
|
|
}
|
|
|
|
set cW [tixWinWidth $data(w:canvas)]
|
|
set cH [tixWinHeight $data(w:canvas)]
|
|
set sW [expr {$data(sx2)-$data(sx1)+1}]
|
|
set sH [expr {$data(sy2)-$data(sy1)+1}]
|
|
|
|
tixCObjView:SetScrollBars $w $cW $cH $sW $sH
|
|
}
|
|
|
|
# Junk
|
|
#
|
|
#
|
|
proc tixCObjView:XScroll {w first last} {
|
|
upvar #0 $w data
|
|
|
|
set sc [$data(w:canvas) cget -scrollregion]
|
|
if {$sc == ""} {
|
|
set x1 1
|
|
set x2 [tixWinWidth $data(w:canvas)]
|
|
} else {
|
|
set x1 [lindex $sc 0]
|
|
set x2 [lindex $sc 2]
|
|
}
|
|
|
|
set W [expr {$x2 - $x1}]
|
|
if {$W < 1} {
|
|
set W 1
|
|
}
|
|
|
|
$data(w:hsb) set $first $last
|
|
|
|
# tixWidgetDoWhenIdle tixScrolledWidget:Configure $w
|
|
}
|
|
|
|
# Junk
|
|
#
|
|
proc tixCObjView:YScroll {w first last} {
|
|
upvar #0 $w data
|
|
|
|
set sc [$data(w:canvas) cget -scrollregion]
|
|
|
|
if {$sc == ""} {
|
|
set y1 1
|
|
set y2 [tixWinHeight $data(w:canvas)]
|
|
} else {
|
|
set y1 [lindex $sc 1]
|
|
set y2 [lindex $sc 3]
|
|
}
|
|
|
|
set H [expr {$y2 - $y1}]
|
|
if {$H < 1} {
|
|
set H 1
|
|
}
|
|
|
|
$data(w:vsb) set $first $last
|
|
|
|
# tixWidgetDoWhenIdle tixScrolledWidget:Configure $w
|
|
}
|