spinbox.tcl
上传用户:rrhhcc
上传日期:2015-12-11
资源大小:54129k
文件大小:15k
- # spinbox.tcl --
- #
- # This file defines the default bindings for Tk spinbox widgets and provides
- # procedures that help in implementing those bindings. The spinbox builds
- # off the entry widget, so it can reuse Entry bindings and procedures.
- #
- # RCS: @(#) $Id: spinbox.tcl,v 1.6.2.1 2006/01/25 18:21:41 dgp Exp $
- #
- # Copyright (c) 1992-1994 The Regents of the University of California.
- # Copyright (c) 1994-1997 Sun Microsystems, Inc.
- # Copyright (c) 1999-2000 Jeffrey Hobbs
- # Copyright (c) 2000 Ajuba Solutions
- #
- # See the file "license.terms" for information on usage and redistribution
- # of this file, and for a DISCLAIMER OF ALL WARRANTIES.
- #
- #-------------------------------------------------------------------------
- # Elements of tk::Priv that are used in this file:
- #
- # afterId - If non-null, it means that auto-scanning is underway
- # and it gives the "after" id for the next auto-scan
- # command to be executed.
- # mouseMoved - Non-zero means the mouse has moved a significant
- # amount since the button went down (so, for example,
- # start dragging out a selection).
- # pressX - X-coordinate at which the mouse button was pressed.
- # selectMode - The style of selection currently underway:
- # char, word, or line.
- # x, y - Last known mouse coordinates for scanning
- # and auto-scanning.
- # data - Used for Cut and Copy
- #-------------------------------------------------------------------------
- # Initialize namespace
- namespace eval ::tk::spinbox {}
- #-------------------------------------------------------------------------
- # The code below creates the default class bindings for entries.
- #-------------------------------------------------------------------------
- bind Spinbox <<Cut>> {
- if {![catch {::tk::spinbox::GetSelection %W} tk::Priv(data)]} {
- clipboard clear -displayof %W
- clipboard append -displayof %W $tk::Priv(data)
- %W delete sel.first sel.last
- unset tk::Priv(data)
- }
- }
- bind Spinbox <<Copy>> {
- if {![catch {::tk::spinbox::GetSelection %W} tk::Priv(data)]} {
- clipboard clear -displayof %W
- clipboard append -displayof %W $tk::Priv(data)
- unset tk::Priv(data)
- }
- }
- bind Spinbox <<Paste>> {
- global tcl_platform
- catch {
- if {[tk windowingsystem] ne "x11"} {
- catch {
- %W delete sel.first sel.last
- }
- }
- %W insert insert [::tk::GetSelection %W CLIPBOARD]
- ::tk::EntrySeeInsert %W
- }
- }
- bind Spinbox <<Clear>> {
- %W delete sel.first sel.last
- }
- bind Spinbox <<PasteSelection>> {
- if {$tk_strictMotif || ![info exists tk::Priv(mouseMoved)]
- || !$tk::Priv(mouseMoved)} {
- ::tk::spinbox::Paste %W %x
- }
- }
- # Standard Motif bindings:
- bind Spinbox <1> {
- ::tk::spinbox::ButtonDown %W %x %y
- }
- bind Spinbox <B1-Motion> {
- ::tk::spinbox::Motion %W %x %y
- }
- bind Spinbox <Double-1> {
- set tk::Priv(selectMode) word
- ::tk::spinbox::MouseSelect %W %x sel.first
- }
- bind Spinbox <Triple-1> {
- set tk::Priv(selectMode) line
- ::tk::spinbox::MouseSelect %W %x 0
- }
- bind Spinbox <Shift-1> {
- set tk::Priv(selectMode) char
- %W selection adjust @%x
- }
- bind Spinbox <Double-Shift-1> {
- set tk::Priv(selectMode) word
- ::tk::spinbox::MouseSelect %W %x
- }
- bind Spinbox <Triple-Shift-1> {
- set tk::Priv(selectMode) line
- ::tk::spinbox::MouseSelect %W %x
- }
- bind Spinbox <B1-Leave> {
- set tk::Priv(x) %x
- ::tk::spinbox::AutoScan %W
- }
- bind Spinbox <B1-Enter> {
- tk::CancelRepeat
- }
- bind Spinbox <ButtonRelease-1> {
- ::tk::spinbox::ButtonUp %W %x %y
- }
- bind Spinbox <Control-1> {
- %W icursor @%x
- }
- bind Spinbox <Up> {
- %W invoke buttonup
- }
- bind Spinbox <Down> {
- %W invoke buttondown
- }
- bind Spinbox <Left> {
- ::tk::EntrySetCursor %W [expr {[%W index insert] - 1}]
- }
- bind Spinbox <Right> {
- ::tk::EntrySetCursor %W [expr {[%W index insert] + 1}]
- }
- bind Spinbox <Shift-Left> {
- ::tk::EntryKeySelect %W [expr {[%W index insert] - 1}]
- ::tk::EntrySeeInsert %W
- }
- bind Spinbox <Shift-Right> {
- ::tk::EntryKeySelect %W [expr {[%W index insert] + 1}]
- ::tk::EntrySeeInsert %W
- }
- bind Spinbox <Control-Left> {
- ::tk::EntrySetCursor %W [::tk::EntryPreviousWord %W insert]
- }
- bind Spinbox <Control-Right> {
- ::tk::EntrySetCursor %W [::tk::EntryNextWord %W insert]
- }
- bind Spinbox <Shift-Control-Left> {
- ::tk::EntryKeySelect %W [::tk::EntryPreviousWord %W insert]
- ::tk::EntrySeeInsert %W
- }
- bind Spinbox <Shift-Control-Right> {
- ::tk::EntryKeySelect %W [::tk::EntryNextWord %W insert]
- ::tk::EntrySeeInsert %W
- }
- bind Spinbox <Home> {
- ::tk::EntrySetCursor %W 0
- }
- bind Spinbox <Shift-Home> {
- ::tk::EntryKeySelect %W 0
- ::tk::EntrySeeInsert %W
- }
- bind Spinbox <End> {
- ::tk::EntrySetCursor %W end
- }
- bind Spinbox <Shift-End> {
- ::tk::EntryKeySelect %W end
- ::tk::EntrySeeInsert %W
- }
- bind Spinbox <Delete> {
- if {[%W selection present]} {
- %W delete sel.first sel.last
- } else {
- %W delete insert
- }
- }
- bind Spinbox <BackSpace> {
- ::tk::EntryBackspace %W
- }
- bind Spinbox <Control-space> {
- %W selection from insert
- }
- bind Spinbox <Select> {
- %W selection from insert
- }
- bind Spinbox <Control-Shift-space> {
- %W selection adjust insert
- }
- bind Spinbox <Shift-Select> {
- %W selection adjust insert
- }
- bind Spinbox <Control-slash> {
- %W selection range 0 end
- }
- bind Spinbox <Control-backslash> {
- %W selection clear
- }
- bind Spinbox <KeyPress> {
- ::tk::EntryInsert %W %A
- }
- # Ignore all Alt, Meta, and Control keypresses unless explicitly bound.
- # Otherwise, if a widget binding for one of these is defined, the
- # <KeyPress> class binding will also fire and insert the character,
- # which is wrong. Ditto for Escape, Return, and Tab.
- bind Spinbox <Alt-KeyPress> {# nothing}
- bind Spinbox <Meta-KeyPress> {# nothing}
- bind Spinbox <Control-KeyPress> {# nothing}
- bind Spinbox <Escape> {# nothing}
- bind Spinbox <Return> {# nothing}
- bind Spinbox <KP_Enter> {# nothing}
- bind Spinbox <Tab> {# nothing}
- if {[tk windowingsystem] eq "classic" || [tk windowingsystem] eq "aqua"} {
- bind Spinbox <Command-KeyPress> {# nothing}
- }
- # On Windows, paste is done using Shift-Insert. Shift-Insert already
- # generates the <<Paste>> event, so we don't need to do anything here.
- if {$tcl_platform(platform) ne "windows"} {
- bind Spinbox <Insert> {
- catch {::tk::EntryInsert %W [::tk::GetSelection %W PRIMARY]}
- }
- }
- # Additional emacs-like bindings:
- bind Spinbox <Control-a> {
- if {!$tk_strictMotif} {
- ::tk::EntrySetCursor %W 0
- }
- }
- bind Spinbox <Control-b> {
- if {!$tk_strictMotif} {
- ::tk::EntrySetCursor %W [expr {[%W index insert] - 1}]
- }
- }
- bind Spinbox <Control-d> {
- if {!$tk_strictMotif} {
- %W delete insert
- }
- }
- bind Spinbox <Control-e> {
- if {!$tk_strictMotif} {
- ::tk::EntrySetCursor %W end
- }
- }
- bind Spinbox <Control-f> {
- if {!$tk_strictMotif} {
- ::tk::EntrySetCursor %W [expr {[%W index insert] + 1}]
- }
- }
- bind Spinbox <Control-h> {
- if {!$tk_strictMotif} {
- ::tk::EntryBackspace %W
- }
- }
- bind Spinbox <Control-k> {
- if {!$tk_strictMotif} {
- %W delete insert end
- }
- }
- bind Spinbox <Control-t> {
- if {!$tk_strictMotif} {
- ::tk::EntryTranspose %W
- }
- }
- bind Spinbox <Meta-b> {
- if {!$tk_strictMotif} {
- ::tk::EntrySetCursor %W [::tk::EntryPreviousWord %W insert]
- }
- }
- bind Spinbox <Meta-d> {
- if {!$tk_strictMotif} {
- %W delete insert [::tk::EntryNextWord %W insert]
- }
- }
- bind Spinbox <Meta-f> {
- if {!$tk_strictMotif} {
- ::tk::EntrySetCursor %W [::tk::EntryNextWord %W insert]
- }
- }
- bind Spinbox <Meta-BackSpace> {
- if {!$tk_strictMotif} {
- %W delete [::tk::EntryPreviousWord %W insert] insert
- }
- }
- bind Spinbox <Meta-Delete> {
- if {!$tk_strictMotif} {
- %W delete [::tk::EntryPreviousWord %W insert] insert
- }
- }
- # A few additional bindings of my own.
- bind Spinbox <2> {
- if {!$tk_strictMotif} {
- ::tk::EntryScanMark %W %x
- }
- }
- bind Spinbox <B2-Motion> {
- if {!$tk_strictMotif} {
- ::tk::EntryScanDrag %W %x
- }
- }
- # ::tk::spinbox::Invoke --
- # Invoke an element of the spinbox
- #
- # Arguments:
- # w - The spinbox window.
- # elem - Element to invoke
- proc ::tk::spinbox::Invoke {w elem} {
- variable ::tk::Priv
- if {![info exists Priv(outsideElement)]} {
- $w invoke $elem
- incr Priv(repeated)
- }
- set delay [$w cget -repeatinterval]
- if {$delay > 0} {
- set Priv(afterId) [after $delay
- [list ::tk::spinbox::Invoke $w $elem]]
- }
- }
- # ::tk::spinbox::ClosestGap --
- # Given x and y coordinates, this procedure finds the closest boundary
- # between characters to the given coordinates and returns the index
- # of the character just after the boundary.
- #
- # Arguments:
- # w - The spinbox window.
- # x - X-coordinate within the window.
- proc ::tk::spinbox::ClosestGap {w x} {
- set pos [$w index @$x]
- set bbox [$w bbox $pos]
- if {($x - [lindex $bbox 0]) < ([lindex $bbox 2]/2)} {
- return $pos
- }
- incr pos
- }
- # ::tk::spinbox::ButtonDown --
- # This procedure is invoked to handle button-1 presses in spinbox
- # widgets. It moves the insertion cursor, sets the selection anchor,
- # and claims the input focus.
- #
- # Arguments:
- # w - The spinbox window in which the button was pressed.
- # x - The x-coordinate of the button press.
- proc ::tk::spinbox::ButtonDown {w x y} {
- variable ::tk::Priv
- # Get the element that was clicked in. If we are not directly over
- # the spinbox, default to entry. This is necessary for spinbox grabs.
- #
- set Priv(element) [$w identify $x $y]
- if {$Priv(element) eq ""} {
- set Priv(element) "entry"
- }
- switch -exact $Priv(element) {
- "buttonup" - "buttondown" {
- if {"disabled" ne [$w cget -state]} {
- $w selection element $Priv(element)
- set Priv(repeated) 0
- set Priv(relief) [$w cget -$Priv(element)relief]
- catch {after cancel $Priv(afterId)}
- set delay [$w cget -repeatdelay]
- if {$delay > 0} {
- set Priv(afterId) [after $delay
- [list ::tk::spinbox::Invoke $w $Priv(element)]]
- }
- if {[info exists Priv(outsideElement)]} {
- unset Priv(outsideElement)
- }
- }
- }
- "entry" {
- set Priv(selectMode) char
- set Priv(mouseMoved) 0
- set Priv(pressX) $x
- $w icursor [::tk::spinbox::ClosestGap $w $x]
- $w selection from insert
- if {"disabled" ne [$w cget -state]} {focus $w}
- $w selection clear
- }
- default {
- return -code error "unknown spinbox element "$Priv(element)""
- }
- }
- }
- # ::tk::spinbox::ButtonUp --
- # This procedure is invoked to handle button-1 releases in spinbox
- # widgets.
- #
- # Arguments:
- # w - The spinbox window in which the button was pressed.
- # x - The x-coordinate of the button press.
- proc ::tk::spinbox::ButtonUp {w x y} {
- variable ::tk::Priv
- ::tk::CancelRepeat
- # Priv(relief) may not exist if the ButtonUp is not paired with
- # a preceding ButtonDown
- if {[info exists Priv(element)] && [info exists Priv(relief)] &&
- [string match "button*" $Priv(element)]} {
- if {[info exists Priv(repeated)] && !$Priv(repeated)} {
- $w invoke $Priv(element)
- }
- $w configure -$Priv(element)relief $Priv(relief)
- $w selection element none
- }
- }
- # ::tk::spinbox::MouseSelect --
- # This procedure is invoked when dragging out a selection with
- # the mouse. Depending on the selection mode (character, word,
- # line) it selects in different-sized units. This procedure
- # ignores mouse motions initially until the mouse has moved from
- # one character to another or until there have been multiple clicks.
- #
- # Arguments:
- # w - The spinbox window in which the button was pressed.
- # x - The x-coordinate of the mouse.
- # cursor - optional place to set cursor.
- proc ::tk::spinbox::MouseSelect {w x {cursor {}}} {
- variable ::tk::Priv
- if {$Priv(element) ne "entry"} {
- # The ButtonUp command triggered by ButtonRelease-1 handles
- # invoking one of the spinbuttons.
- return
- }
- set cur [::tk::spinbox::ClosestGap $w $x]
- set anchor [$w index anchor]
- if {($cur ne $anchor) || (abs($Priv(pressX) - $x) >= 3)} {
- set Priv(mouseMoved) 1
- }
- switch $Priv(selectMode) {
- char {
- if {$Priv(mouseMoved)} {
- if {$cur < $anchor} {
- $w selection range $cur $anchor
- } elseif {$cur > $anchor} {
- $w selection range $anchor $cur
- } else {
- $w selection clear
- }
- }
- }
- word {
- if {$cur < [$w index anchor]} {
- set before [tcl_wordBreakBefore [$w get] $cur]
- set after [tcl_wordBreakAfter [$w get] [expr {$anchor-1}]]
- } else {
- set before [tcl_wordBreakBefore [$w get] $anchor]
- set after [tcl_wordBreakAfter [$w get] [expr {$cur - 1}]]
- }
- if {$before < 0} {
- set before 0
- }
- if {$after < 0} {
- set after end
- }
- $w selection range $before $after
- }
- line {
- $w selection range 0 end
- }
- }
- if {$cursor ne {} && $cursor ne "ignore"} {
- catch {$w icursor $cursor}
- }
- update idletasks
- }
- # ::tk::spinbox::Paste --
- # This procedure sets the insertion cursor to the current mouse position,
- # pastes the selection there, and sets the focus to the window.
- #
- # Arguments:
- # w - The spinbox window.
- # x - X position of the mouse.
- proc ::tk::spinbox::Paste {w x} {
- $w icursor [::tk::spinbox::ClosestGap $w $x]
- catch {$w insert insert [::tk::GetSelection $w PRIMARY]}
- if {"disabled" eq [$w cget -state]} {focus $w}
- }
- # ::tk::spinbox::Motion --
- # This procedure is invoked when the mouse moves in a spinbox window
- # with button 1 down.
- #
- # Arguments:
- # w - The spinbox window.
- proc ::tk::spinbox::Motion {w x y} {
- variable ::tk::Priv
- if {![info exists Priv(element)]} {
- set Priv(element) [$w identify $x $y]
- }
- set Priv(x) $x
- if {"entry" eq $Priv(element)} {
- ::tk::spinbox::MouseSelect $w $x ignore
- } elseif {[$w identify $x $y] ne $Priv(element)} {
- if {![info exists Priv(outsideElement)]} {
- # We've wandered out of the spin button
- # setting outside element will cause ::tk::spinbox::Invoke to
- # loop without doing anything
- set Priv(outsideElement) ""
- $w selection element none
- }
- } elseif {[info exists Priv(outsideElement)]} {
- unset Priv(outsideElement)
- $w selection element $Priv(element)
- }
- }
- # ::tk::spinbox::AutoScan --
- # This procedure is invoked when the mouse leaves an spinbox window
- # with button 1 down. It scrolls the window left or right,
- # depending on where the mouse is, and reschedules itself as an
- # "after" command so that the window continues to scroll until the
- # mouse moves back into the window or the mouse button is released.
- #
- # Arguments:
- # w - The spinbox window.
- proc ::tk::spinbox::AutoScan {w} {
- variable ::tk::Priv
- set x $Priv(x)
- if {$x >= [winfo width $w]} {
- $w xview scroll 2 units
- ::tk::spinbox::MouseSelect $w $x ignore
- } elseif {$x < 0} {
- $w xview scroll -2 units
- ::tk::spinbox::MouseSelect $w $x ignore
- }
- set Priv(afterId) [after 50 [list ::tk::spinbox::AutoScan $w]]
- }
- # ::tk::spinbox::GetSelection --
- #
- # Returns the selected text of the spinbox. Differs from entry in that
- # a spinbox has no -show option to obscure contents.
- #
- # Arguments:
- # w - The spinbox window from which the text to get
- proc ::tk::spinbox::GetSelection {w} {
- return [string range [$w get] [$w index sel.first]
- [expr {[$w index sel.last] - 1}]]
- }