You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
275 lines
7.3 KiB
Tcl
275 lines
7.3 KiB
Tcl
# scale.tcl --
|
|
#
|
|
# This file defines the default bindings for Tk scale widgets and provides
|
|
# procedures that help in implementing the bindings.
|
|
#
|
|
# RCS: @(#) $Id: scale.tcl,v 1.9 2002/02/26 01:07:08 hobbs Exp $
|
|
#
|
|
# Copyright (c) 1994 The Regents of the University of California.
|
|
# Copyright (c) 1994-1995 Sun Microsystems, Inc.
|
|
#
|
|
# See the file "license.terms" for information on usage and redistribution
|
|
# of this file, and for a DISCLAIMER OF ALL WARRANTIES.
|
|
#
|
|
|
|
#-------------------------------------------------------------------------
|
|
# The code below creates the default class bindings for entries.
|
|
#-------------------------------------------------------------------------
|
|
|
|
# Standard Motif bindings:
|
|
|
|
bind Scale <Enter> {
|
|
if {$tk_strictMotif} {
|
|
set tk::Priv(activeBg) [%W cget -activebackground]
|
|
%W config -activebackground [%W cget -background]
|
|
}
|
|
tk::ScaleActivate %W %x %y
|
|
}
|
|
bind Scale <Motion> {
|
|
tk::ScaleActivate %W %x %y
|
|
}
|
|
bind Scale <Leave> {
|
|
if {$tk_strictMotif} {
|
|
%W config -activebackground $tk::Priv(activeBg)
|
|
}
|
|
if {[string equal [%W cget -state] "active"]} {
|
|
%W configure -state normal
|
|
}
|
|
}
|
|
bind Scale <1> {
|
|
tk::ScaleButtonDown %W %x %y
|
|
}
|
|
bind Scale <B1-Motion> {
|
|
tk::ScaleDrag %W %x %y
|
|
}
|
|
bind Scale <B1-Leave> { }
|
|
bind Scale <B1-Enter> { }
|
|
bind Scale <ButtonRelease-1> {
|
|
tk::CancelRepeat
|
|
tk::ScaleEndDrag %W
|
|
tk::ScaleActivate %W %x %y
|
|
}
|
|
bind Scale <2> {
|
|
tk::ScaleButton2Down %W %x %y
|
|
}
|
|
bind Scale <B2-Motion> {
|
|
tk::ScaleDrag %W %x %y
|
|
}
|
|
bind Scale <B2-Leave> { }
|
|
bind Scale <B2-Enter> { }
|
|
bind Scale <ButtonRelease-2> {
|
|
tk::CancelRepeat
|
|
tk::ScaleEndDrag %W
|
|
tk::ScaleActivate %W %x %y
|
|
}
|
|
if {[string equal $tcl_platform(platform) "windows"]} {
|
|
# On Windows do the same with button 3, as that is the right mouse button
|
|
bind Scale <3> [bind Scale <2>]
|
|
bind Scale <B3-Motion> [bind Scale <B2-Motion>]
|
|
bind Scale <B3-Leave> [bind Scale <B2-Leave>]
|
|
bind Scale <B3-Enter> [bind Scale <B2-Enter>]
|
|
bind Scale <ButtonRelease-3> [bind Scale <ButtonRelease-2>]
|
|
}
|
|
bind Scale <Control-1> {
|
|
tk::ScaleControlPress %W %x %y
|
|
}
|
|
bind Scale <Up> {
|
|
tk::ScaleIncrement %W up little noRepeat
|
|
}
|
|
bind Scale <Down> {
|
|
tk::ScaleIncrement %W down little noRepeat
|
|
}
|
|
bind Scale <Left> {
|
|
tk::ScaleIncrement %W up little noRepeat
|
|
}
|
|
bind Scale <Right> {
|
|
tk::ScaleIncrement %W down little noRepeat
|
|
}
|
|
bind Scale <Control-Up> {
|
|
tk::ScaleIncrement %W up big noRepeat
|
|
}
|
|
bind Scale <Control-Down> {
|
|
tk::ScaleIncrement %W down big noRepeat
|
|
}
|
|
bind Scale <Control-Left> {
|
|
tk::ScaleIncrement %W up big noRepeat
|
|
}
|
|
bind Scale <Control-Right> {
|
|
tk::ScaleIncrement %W down big noRepeat
|
|
}
|
|
bind Scale <Home> {
|
|
%W set [%W cget -from]
|
|
}
|
|
bind Scale <End> {
|
|
%W set [%W cget -to]
|
|
}
|
|
|
|
# ::tk::ScaleActivate --
|
|
# This procedure is invoked to check a given x-y position in the
|
|
# scale and activate the slider if the x-y position falls within
|
|
# the slider.
|
|
#
|
|
# Arguments:
|
|
# w - The scale widget.
|
|
# x, y - Mouse coordinates.
|
|
|
|
proc ::tk::ScaleActivate {w x y} {
|
|
if {[string equal [$w cget -state] "disabled"]} {
|
|
return
|
|
}
|
|
if {[string equal [$w identify $x $y] "slider"]} {
|
|
set state active
|
|
} else {
|
|
set state normal
|
|
}
|
|
if {[string compare [$w cget -state] $state]} {
|
|
$w configure -state $state
|
|
}
|
|
}
|
|
|
|
# ::tk::ScaleButtonDown --
|
|
# This procedure is invoked when a button is pressed in a scale. It
|
|
# takes different actions depending on where the button was pressed.
|
|
#
|
|
# Arguments:
|
|
# w - The scale widget.
|
|
# x, y - Mouse coordinates of button press.
|
|
|
|
proc ::tk::ScaleButtonDown {w x y} {
|
|
variable ::tk::Priv
|
|
set Priv(dragging) 0
|
|
set el [$w identify $x $y]
|
|
if {[string equal $el "trough1"]} {
|
|
ScaleIncrement $w up little initial
|
|
} elseif {[string equal $el "trough2"]} {
|
|
ScaleIncrement $w down little initial
|
|
} elseif {[string equal $el "slider"]} {
|
|
set Priv(dragging) 1
|
|
set Priv(initValue) [$w get]
|
|
set coords [$w coords]
|
|
set Priv(deltaX) [expr {$x - [lindex $coords 0]}]
|
|
set Priv(deltaY) [expr {$y - [lindex $coords 1]}]
|
|
$w configure -sliderrelief sunken
|
|
}
|
|
}
|
|
|
|
# ::tk::ScaleDrag --
|
|
# This procedure is called when the mouse is dragged with
|
|
# mouse button 1 down. If the drag started inside the slider
|
|
# (i.e. the scale is active) then the scale's value is adjusted
|
|
# to reflect the mouse's position.
|
|
#
|
|
# Arguments:
|
|
# w - The scale widget.
|
|
# x, y - Mouse coordinates.
|
|
|
|
proc ::tk::ScaleDrag {w x y} {
|
|
variable ::tk::Priv
|
|
if {!$Priv(dragging)} {
|
|
return
|
|
}
|
|
$w set [$w get [expr {$x-$Priv(deltaX)}] [expr {$y-$Priv(deltaY)}]]
|
|
}
|
|
|
|
# ::tk::ScaleEndDrag --
|
|
# This procedure is called to end an interactive drag of the
|
|
# slider. It just marks the drag as over.
|
|
#
|
|
# Arguments:
|
|
# w - The scale widget.
|
|
|
|
proc ::tk::ScaleEndDrag {w} {
|
|
variable ::tk::Priv
|
|
set Priv(dragging) 0
|
|
$w configure -sliderrelief raised
|
|
}
|
|
|
|
# ::tk::ScaleIncrement --
|
|
# This procedure is invoked to increment the value of a scale and
|
|
# to set up auto-repeating of the action if that is desired. The
|
|
# way the value is incremented depends on the "dir" and "big"
|
|
# arguments.
|
|
#
|
|
# Arguments:
|
|
# w - The scale widget.
|
|
# dir - "up" means move value towards -from, "down" means
|
|
# move towards -to.
|
|
# big - Size of increments: "big" or "little".
|
|
# repeat - Whether and how to auto-repeat the action: "noRepeat"
|
|
# means don't auto-repeat, "initial" means this is the
|
|
# first action in an auto-repeat sequence, and "again"
|
|
# means this is the second repetition or later.
|
|
|
|
proc ::tk::ScaleIncrement {w dir big repeat} {
|
|
variable ::tk::Priv
|
|
if {![winfo exists $w]} return
|
|
if {[string equal $big "big"]} {
|
|
set inc [$w cget -bigincrement]
|
|
if {$inc == 0} {
|
|
set inc [expr {abs([$w cget -to] - [$w cget -from])/10.0}]
|
|
}
|
|
if {$inc < [$w cget -resolution]} {
|
|
set inc [$w cget -resolution]
|
|
}
|
|
} else {
|
|
set inc [$w cget -resolution]
|
|
}
|
|
if {([$w cget -from] > [$w cget -to]) ^ [string equal $dir "up"]} {
|
|
set inc [expr {-$inc}]
|
|
}
|
|
$w set [expr {[$w get] + $inc}]
|
|
|
|
if {[string equal $repeat "again"]} {
|
|
set Priv(afterId) [after [$w cget -repeatinterval] \
|
|
[list tk::ScaleIncrement $w $dir $big again]]
|
|
} elseif {[string equal $repeat "initial"]} {
|
|
set delay [$w cget -repeatdelay]
|
|
if {$delay > 0} {
|
|
set Priv(afterId) [after $delay \
|
|
[list tk::ScaleIncrement $w $dir $big again]]
|
|
}
|
|
}
|
|
}
|
|
|
|
# ::tk::ScaleControlPress --
|
|
# This procedure handles button presses that are made with the Control
|
|
# key down. Depending on the mouse position, it adjusts the scale
|
|
# value to one end of the range or the other.
|
|
#
|
|
# Arguments:
|
|
# w - The scale widget.
|
|
# x, y - Mouse coordinates where the button was pressed.
|
|
|
|
proc ::tk::ScaleControlPress {w x y} {
|
|
set el [$w identify $x $y]
|
|
if {[string equal $el "trough1"]} {
|
|
$w set [$w cget -from]
|
|
} elseif {[string equal $el "trough2"]} {
|
|
$w set [$w cget -to]
|
|
}
|
|
}
|
|
|
|
# ::tk::ScaleButton2Down
|
|
# This procedure is invoked when button 2 is pressed over a scale.
|
|
# It sets the value to correspond to the mouse position and starts
|
|
# a slider drag.
|
|
#
|
|
# Arguments:
|
|
# w - The scrollbar widget.
|
|
# x, y - Mouse coordinates within the widget.
|
|
|
|
proc ::tk::ScaleButton2Down {w x y} {
|
|
variable ::tk::Priv
|
|
|
|
if {[string equal [$w cget -state] "disabled"]} {
|
|
return
|
|
}
|
|
$w configure -state active
|
|
$w set [$w get $x $y]
|
|
set Priv(dragging) 1
|
|
set Priv(initValue) [$w get]
|
|
set coords "$x $y"
|
|
set Priv(deltaX) 0
|
|
set Priv(deltaY) 0
|
|
}
|