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|
# ------------------------------------------------------------------------------
# arrow.tcl
# This file is part of Unifix BWidget Toolkit
# ------------------------------------------------------------------------------
# Index of commands:
# Public commands
# - ArrowButton::create
# - ArrowButton::configure
# - ArrowButton::cget
# - ArrowButton::invoke
# Private commands (redraw commands)
# - ArrowButton::_redraw
# - ArrowButton::_redraw_state
# - ArrowButton::_redraw_relief
# - ArrowButton::_redraw_whole
# Private commands (event bindings)
# - ArrowButton::_destroy
# - ArrowButton::_enter
# - ArrowButton::_leave
# - ArrowButton::_press
# - ArrowButton::_release
# - ArrowButton::_repeat
# ------------------------------------------------------------------------------
# BWidget ToolKit
# Copyright (c) 1998-1999 UNIFIX.
# Copyright (c) 2001-2002 ActiveState Corp.
# The following terms apply to all files associated with the software
# unless explicitly disclaimed in individual files.
# The authors hereby grant permission to use, copy, modify, distribute,
# and license this software and its documentation for any purpose, provided
# that existing copyright notices are retained in all copies and that this
# notice is included verbatim in any distributions. No written agreement,
# license, or royalty fee is required for any of the authorized uses.
# Modifications to this software may be copyrighted by their authors
# and need not follow the licensing terms described here, provided that
# the new terms are clearly indicated on the first page of each file where
# they apply.
# IN NO EVENT SHALL THE AUTHORS OR DISTRIBUTORS BE LIABLE TO ANY PARTY
# FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
# ARISING OUT OF THE USE OF THIS SOFTWARE, ITS DOCUMENTATION, OR ANY
# DERIVATIVES THEREOF, EVEN IF THE AUTHORS HAVE BEEN ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
# THE AUTHORS AND DISTRIBUTORS SPECIFICALLY DISCLAIM ANY WARRANTIES,
# INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT. THIS SOFTWARE
# IS PROVIDED ON AN "AS IS" BASIS, AND THE AUTHORS AND DISTRIBUTORS HAVE
# NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR
# MODIFICATIONS.
# GOVERNMENT USE: If you are acquiring this software on behalf of the
# U.S. government, the Government shall have only "Restricted Rights"
# in the software and related documentation as defined in the Federal
# Acquisition Regulations (FARs) in Clause 52.227.19 (c) (2). If you
# are acquiring the software on behalf of the Department of Defense, the
# software shall be classified as "Commercial Computer Software" and the
# Government shall have only "Restricted Rights" as defined in Clause
# 252.227-7013 (c) (1) of DFARs. Notwithstanding the foregoing, the
# authors grant the U.S. Government and others acting in its behalf
# permission to use and distribute the software in accordance with the
# terms specified in this license.
namespace eval ArrowButton {
Widget::tkinclude ArrowButton button .c \
include [list \
-borderwidth -bd \
-relief -highlightbackground \
-highlightcolor -highlightthickness -takefocus]
Widget::declare ArrowButton [list \
[list -type Enum button 0 [list arrow button]] \
[list -dir Enum top 0 [list top bottom left right]] \
[list -width Int 15 0 "%d >= 0"] \
[list -height Int 15 0 "%d >= 0"] \
[list -ipadx Int 0 0 "%d >= 0"] \
[list -ipady Int 0 0 "%d >= 0"] \
[list -clean Int 2 0 "%d >= 0 && %d <= 2"] \
[list -activeforeground TkResource "" 0 button] \
[list -activebackground TkResource "" 0 button] \
[list -disabledforeground TkResource "" 0 button] \
[list -foreground TkResource "" 0 button] \
[list -background TkResource "" 0 button] \
[list -state TkResource "" 0 button] \
[list -troughcolor TkResource "" 0 scrollbar] \
[list -arrowbd Int 1 0 "%d >= 0 && %d <= 2"] \
[list -arrowrelief Enum raised 0 [list raised sunken]] \
[list -command String "" 0] \
[list -armcommand String "" 0] \
[list -disarmcommand String "" 0] \
[list -repeatdelay Int 0 0 "%d >= 0"] \
[list -repeatinterval Int 0 0 "%d >= 0"] \
[list -fg Synonym -foreground] \
[list -bg Synonym -background] \
]
DynamicHelp::include ArrowButton balloon
proc ::ArrowButton { path args } { return [eval ArrowButton::create $path $args] }
proc use {} {}
bind BwArrowButtonC <Enter> {ArrowButton::_enter %W}
bind BwArrowButtonC <Leave> {ArrowButton::_leave %W}
bind BwArrowButtonC <ButtonPress-1> {ArrowButton::_press %W}
bind BwArrowButtonC <ButtonRelease-1> {ArrowButton::_release %W}
bind BwArrowButtonC <Key-space> {ArrowButton::invoke %W; break}
bind BwArrowButtonC <Return> {ArrowButton::invoke %W; break}
bind BwArrowButton <Configure> {ArrowButton::_redraw_whole %W %w %h}
bind BwArrowButton <Destroy> {ArrowButton::_destroy %W}
variable _grab
variable _moved
array set _grab {current "" pressed "" oldstate "" oldrelief ""}
}
# -----------------------------------------------------------------------------
# Command ArrowButton::create
# -----------------------------------------------------------------------------
proc ArrowButton::create { path args } {
# Initialize configuration mappings and parse arguments
array set submaps [list ArrowButton [list ] .c [list ]]
array set submaps [Widget::parseArgs ArrowButton $args]
# Create the class frame (so we can do the option db queries)
frame $path -class ArrowButton -borderwidth 0 -highlightthickness 0
Widget::initFromODB ArrowButton $path $submaps(ArrowButton)
# Create the canvas with the initial options
eval canvas $path.c $submaps(.c)
# Compute the width and height of the canvas from the width/height
# of the ArrowButton and the borderwidth/hightlightthickness.
set w [Widget::getMegawidgetOption $path -width]
set h [Widget::getMegawidgetOption $path -height]
set bd [Widget::cget $path -borderwidth]
set ht [Widget::cget $path -highlightthickness]
set pad [expr {2*($bd+$ht)}]
$path.c configure -width [expr {$w-$pad}] -height [expr {$h-$pad}]
bindtags $path [list $path BwArrowButton [winfo toplevel $path] all]
bindtags $path.c [list $path.c BwArrowButtonC [winfo toplevel $path.c] all]
pack $path.c -expand yes -fill both
DynamicHelp::sethelp $path $path.c 1
set ::ArrowButton::_moved($path) 0
rename $path ::$path:cmd
proc ::$path { cmd args } "return \[eval ArrowButton::\$cmd $path \$args\]"
return $path
}
# -----------------------------------------------------------------------------
# Command ArrowButton::configure
# -----------------------------------------------------------------------------
proc ArrowButton::configure { path args } {
set res [Widget::configure $path $args]
set ch1 [expr {[Widget::hasChanged $path -width w] |
[Widget::hasChanged $path -height h] |
[Widget::hasChanged $path -borderwidth bd] |
[Widget::hasChanged $path -highlightthickness ht]}]
set ch2 [expr {[Widget::hasChanged $path -type val] |
[Widget::hasChanged $path -ipadx val] |
[Widget::hasChanged $path -ipady val] |
[Widget::hasChanged $path -arrowbd val] |
[Widget::hasChanged $path -clean val] |
[Widget::hasChanged $path -dir val]}]
if { $ch1 } {
set pad [expr {2*($bd+$ht)}]
$path.c configure \
-width [expr {$w-$pad}] -height [expr {$h-$pad}] \
-borderwidth $bd -highlightthickness $ht
set ch2 1
}
if { $ch2 } {
_redraw_whole $path [winfo width $path] [winfo height $path]
} else {
_redraw_relief $path
_redraw_state $path
}
DynamicHelp::sethelp $path $path.c
return $res
}
# -----------------------------------------------------------------------------
# Command ArrowButton::cget
# -----------------------------------------------------------------------------
proc ArrowButton::cget { path option } {
return [Widget::cget $path $option]
}
# ------------------------------------------------------------------------------
# Command ArrowButton::invoke
# ------------------------------------------------------------------------------
proc ArrowButton::invoke { path } {
if { ![string equal [winfo class $path] "ArrowButton"] } {
set path [winfo parent $path]
}
if { [string compare [Widget::getoption $path -state] "disabled"] } {
set oldstate [Widget::getoption $path -state]
if { ![string compare [Widget::getoption $path -type] "button"] } {
set oldrelief [Widget::getoption $path -relief]
configure $path -state active -relief sunken
} else {
set oldrelief [Widget::getoption $path -arrowrelief]
configure $path -state active -arrowrelief sunken
}
update idletasks
if { [set cmd [Widget::getoption $path -armcommand]] != "" } {
uplevel \#0 $cmd
}
after 10
if { ![string compare [Widget::getoption $path -type] "button"] } {
configure $path -state $oldstate -relief $oldrelief
} else {
configure $path -state $oldstate -arrowrelief $oldrelief
}
if { [set cmd [Widget::getoption $path -disarmcommand]] != "" } {
uplevel \#0 $cmd
}
if { [set cmd [Widget::getoption $path -command]] != "" } {
uplevel \#0 $cmd
}
}
}
# ------------------------------------------------------------------------------
# Command ArrowButton::_redraw
# ------------------------------------------------------------------------------
proc ArrowButton::_redraw { path width height } {
variable _moved
set _moved($path) 0
set type [Widget::getoption $path -type]
set dir [Widget::getoption $path -dir]
set bd [expr {[$path.c cget -borderwidth] + [$path.c cget -highlightthickness] + 1}]
set clean [Widget::getoption $path -clean]
if { ![string compare $type "arrow"] } {
if { [set id [$path.c find withtag rect]] == "" } {
$path.c create rectangle $bd $bd [expr {$width-$bd-1}] [expr {$height-$bd-1}] -tags rect
} else {
$path.c coords $id $bd $bd [expr {$width-$bd-1}] [expr {$height-$bd-1}]
}
$path.c lower rect
set arrbd [Widget::getoption $path -arrowbd]
set bd [expr {$bd+$arrbd-1}]
} else {
$path.c delete rect
}
# w and h are max width and max height of arrow
set w [expr {$width - 2*([Widget::getoption $path -ipadx]+$bd)}]
set h [expr {$height - 2*([Widget::getoption $path -ipady]+$bd)}]
if { $w < 2 } {set w 2}
if { $h < 2 } {set h 2}
if { $clean > 0 } {
# arrange for base to be odd
if { ![string compare $dir "top"] ||
![string compare $dir "bottom"] } {
if { !($w % 2) } {
incr w -1
}
if { $clean == 2 } {
# arrange for h = (w+1)/2
set h2 [expr {($w+1)/2}]
if { $h2 > $h } {
set w [expr {2*$h-1}]
} else {
set h $h2
}
}
} else {
if { !($h % 2) } {
incr h -1
}
if { $clean == 2 } {
# arrange for w = (h+1)/2
set w2 [expr {($h+1)/2}]
if { $w2 > $w } {
set h [expr {2*$w-1}]
} else {
set w $w2
}
}
}
}
set x0 [expr {($width-$w)/2}]
set y0 [expr {($height-$h)/2}]
set x1 [expr {$x0+$w-1}]
set y1 [expr {$y0+$h-1}]
switch $dir {
top {
set xd [expr {($x0+$x1)/2}]
if { [set id [$path.c find withtag poly]] == "" } {
$path.c create polygon $x0 $y1 $x1 $y1 $xd $y0 -tags poly
} else {
$path.c coords $id $x0 $y1 $x1 $y1 $xd $y0
}
if { ![string compare $type "arrow"] } {
if { [set id [$path.c find withtag bot]] == "" } {
$path.c create line $x0 $y1 $x1 $y1 $xd $y0 -tags bot
} else {
$path.c coords $id $x0 $y1 $x1 $y1 $xd $y0
}
if { [set id [$path.c find withtag top]] == "" } {
$path.c create line $x0 $y1 $xd $y0 -tags top
} else {
$path.c coords $id $x0 $y1 $xd $y0
}
$path.c itemconfigure top -width $arrbd
$path.c itemconfigure bot -width $arrbd
} else {
$path.c delete top
$path.c delete bot
}
}
bottom {
set xd [expr {($x0+$x1)/2}]
if { [set id [$path.c find withtag poly]] == "" } {
$path.c create polygon $x1 $y0 $x0 $y0 $xd $y1 -tags poly
} else {
$path.c coords $id $x1 $y0 $x0 $y0 $xd $y1
}
if { ![string compare $type "arrow"] } {
if { [set id [$path.c find withtag top]] == "" } {
$path.c create line $x1 $y0 $x0 $y0 $xd $y1 -tags top
} else {
$path.c coords $id $x1 $y0 $x0 $y0 $xd $y1
}
if { [set id [$path.c find withtag bot]] == "" } {
$path.c create line $x1 $y0 $xd $y1 -tags bot
} else {
$path.c coords $id $x1 $y0 $xd $y1
}
$path.c itemconfigure top -width $arrbd
$path.c itemconfigure bot -width $arrbd
} else {
$path.c delete top
$path.c delete bot
}
}
left {
set yd [expr {($y0+$y1)/2}]
if { [set id [$path.c find withtag poly]] == "" } {
$path.c create polygon $x1 $y0 $x1 $y1 $x0 $yd -tags poly
} else {
$path.c coords $id $x1 $y0 $x1 $y1 $x0 $yd
}
if { ![string compare $type "arrow"] } {
if { [set id [$path.c find withtag bot]] == "" } {
$path.c create line $x1 $y0 $x1 $y1 $x0 $yd -tags bot
} else {
$path.c coords $id $x1 $y0 $x1 $y1 $x0 $yd
}
if { [set id [$path.c find withtag top]] == "" } {
$path.c create line $x1 $y0 $x0 $yd -tags top
} else {
$path.c coords $id $x1 $y0 $x0 $yd
}
$path.c itemconfigure top -width $arrbd
$path.c itemconfigure bot -width $arrbd
} else {
$path.c delete top
$path.c delete bot
}
}
right {
set yd [expr {($y0+$y1)/2}]
if { [set id [$path.c find withtag poly]] == "" } {
$path.c create polygon $x0 $y1 $x0 $y0 $x1 $yd -tags poly
} else {
$path.c coords $id $x0 $y1 $x0 $y0 $x1 $yd
}
if { ![string compare $type "arrow"] } {
if { [set id [$path.c find withtag top]] == "" } {
$path.c create line $x0 $y1 $x0 $y0 $x1 $yd -tags top
} else {
$path.c coords $id $x0 $y1 $x0 $y0 $x1 $yd
}
if { [set id [$path.c find withtag bot]] == "" } {
$path.c create line $x0 $y1 $x1 $yd -tags bot
} else {
$path.c coords $id $x0 $y1 $x1 $yd
}
$path.c itemconfigure top -width $arrbd
$path.c itemconfigure bot -width $arrbd
} else {
$path.c delete top
$path.c delete bot
}
}
}
}
# ------------------------------------------------------------------------------
# Command ArrowButton::_redraw_state
# ------------------------------------------------------------------------------
proc ArrowButton::_redraw_state { path } {
set state [Widget::getoption $path -state]
if { ![string compare [Widget::getoption $path -type] "button"] } {
switch $state {
normal {set bg -background; set fg -foreground}
active {set bg -activebackground; set fg -activeforeground}
disabled {set bg -background; set fg -disabledforeground}
}
set fg [Widget::getoption $path $fg]
$path.c configure -background [Widget::getoption $path $bg]
$path.c itemconfigure poly -fill $fg -outline $fg
} else {
switch $state {
normal {set stipple ""; set bg [Widget::getoption $path -background] }
active {set stipple ""; set bg [Widget::getoption $path -activebackground] }
disabled {set stipple gray50; set bg black }
}
set thrc [Widget::getoption $path -troughcolor]
$path.c configure -background [Widget::getoption $path -background]
$path.c itemconfigure rect -fill $thrc -outline $thrc
$path.c itemconfigure poly -fill $bg -outline $bg -stipple $stipple
}
}
# ------------------------------------------------------------------------------
# Command ArrowButton::_redraw_relief
# ------------------------------------------------------------------------------
proc ArrowButton::_redraw_relief { path } {
variable _moved
if { ![string compare [Widget::getoption $path -type] "button"] } {
if { ![string compare [Widget::getoption $path -relief] "sunken"] } {
if { !$_moved($path) } {
$path.c move poly 1 1
set _moved($path) 1
}
} else {
if { $_moved($path) } {
$path.c move poly -1 -1
set _moved($path) 0
}
}
} else {
set col3d [BWidget::get3dcolor $path [Widget::getoption $path -background]]
switch [Widget::getoption $path -arrowrelief] {
raised {set top [lindex $col3d 1]; set bot [lindex $col3d 0]}
sunken {set top [lindex $col3d 0]; set bot [lindex $col3d 1]}
}
$path.c itemconfigure top -fill $top
$path.c itemconfigure bot -fill $bot
}
}
# ------------------------------------------------------------------------------
# Command ArrowButton::_redraw_whole
# ------------------------------------------------------------------------------
proc ArrowButton::_redraw_whole { path width height } {
_redraw $path $width $height
_redraw_relief $path
_redraw_state $path
}
# ------------------------------------------------------------------------------
# Command ArrowButton::_destroy
# ------------------------------------------------------------------------------
proc ArrowButton::_destroy { path } {
variable _moved
Widget::destroy $path
unset _moved($path)
rename $path {}
}
# ------------------------------------------------------------------------------
# Command ArrowButton::_enter
# ------------------------------------------------------------------------------
proc ArrowButton::_enter { path } {
variable _grab
set path [winfo parent $path]
set _grab(current) $path
if { [string compare [Widget::getoption $path -state] "disabled"] } {
set _grab(oldstate) [Widget::getoption $path -state]
configure $path -state active
if { $_grab(pressed) == $path } {
if { ![string compare [Widget::getoption $path -type] "button"] } {
set _grab(oldrelief) [Widget::getoption $path -relief]
configure $path -relief sunken
} else {
set _grab(oldrelief) [Widget::getoption $path -arrowrelief]
configure $path -arrowrelief sunken
}
}
}
}
# ------------------------------------------------------------------------------
# Command ArrowButton::_leave
# ------------------------------------------------------------------------------
proc ArrowButton::_leave { path } {
variable _grab
set path [winfo parent $path]
set _grab(current) ""
if { [string compare [Widget::getoption $path -state] "disabled"] } {
configure $path -state $_grab(oldstate)
if { $_grab(pressed) == $path } {
if { ![string compare [Widget::getoption $path -type] "button"] } {
configure $path -relief $_grab(oldrelief)
} else {
configure $path -arrowrelief $_grab(oldrelief)
}
}
}
}
# ------------------------------------------------------------------------------
# Command ArrowButton::_press
# ------------------------------------------------------------------------------
proc ArrowButton::_press { path } {
variable _grab
set path [winfo parent $path]
if { [string compare [Widget::getoption $path -state] "disabled"] } {
set _grab(pressed) $path
if { ![string compare [Widget::getoption $path -type] "button"] } {
set _grab(oldrelief) [Widget::getoption $path -relief]
configure $path -relief sunken
} else {
set _grab(oldrelief) [Widget::getoption $path -arrowrelief]
configure $path -arrowrelief sunken
}
if { [set cmd [Widget::getoption $path -armcommand]] != "" } {
uplevel \#0 $cmd
if { [set delay [Widget::getoption $path -repeatdelay]] > 0 ||
[set delay [Widget::getoption $path -repeatinterval]] > 0 } {
after $delay "ArrowButton::_repeat $path"
}
}
}
}
# ------------------------------------------------------------------------------
# Command ArrowButton::_release
# ------------------------------------------------------------------------------
proc ArrowButton::_release { path } {
variable _grab
set path [winfo parent $path]
if { $_grab(pressed) == $path } {
set _grab(pressed) ""
if { ![string compare [Widget::getoption $path -type] "button"] } {
configure $path -relief $_grab(oldrelief)
} else {
configure $path -arrowrelief $_grab(oldrelief)
}
if { [set cmd [Widget::getoption $path -disarmcommand]] != "" } {
uplevel \#0 $cmd
}
if { $_grab(current) == $path &&
[string compare [Widget::getoption $path -state] "disabled"] &&
[set cmd [Widget::getoption $path -command]] != "" } {
uplevel \#0 $cmd
}
}
}
# ------------------------------------------------------------------------------
# Command ArrowButton::_repeat
# ------------------------------------------------------------------------------
proc ArrowButton::_repeat { path } {
variable _grab
if { $_grab(current) == $path && $_grab(pressed) == $path &&
[string compare [Widget::getoption $path -state] "disabled"] &&
[set cmd [Widget::getoption $path -armcommand]] != "" } {
uplevel \#0 $cmd
}
if { $_grab(pressed) == $path &&
([set delay [Widget::getoption $path -repeatinterval]] > 0 ||
[set delay [Widget::getoption $path -repeatdelay]] > 0) } {
after $delay "ArrowButton::_repeat $path"
}
}
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