608 lines
16 KiB
Tcl
608 lines
16 KiB
Tcl
|
#
|
||
|
|
# DERIVED FROM: tk/library/entry.tcl r1.22
|
||
|
|
#
|
||
|
|
# Copyright (c) 1992-1994 The Regents of the University of California.
|
||
|
|
# Copyright (c) 1994-1997 Sun Microsystems, Inc.
|
||
|
|
# Copyright (c) 2004, Joe English
|
||
|
|
#
|
||
|
|
# See the file "license.terms" for information on usage and redistribution
|
||
|
|
# of this file, and for a DISCLAIMER OF ALL WARRANTIES.
|
||
|
|
#
|
||
|
|
|
||
|
|
namespace eval ttk {
|
||
|
|
namespace eval entry {
|
||
|
|
variable State
|
||
|
|
|
||
|
|
set State(x) 0
|
||
|
|
set State(selectMode) none
|
||
|
|
set State(anchor) 0
|
||
|
|
set State(scanX) 0
|
||
|
|
set State(scanIndex) 0
|
||
|
|
set State(scanMoved) 0
|
||
|
|
|
||
|
|
# Button-2 scan speed is (scanNum/scanDen) characters
|
||
|
|
# per pixel of mouse movement.
|
||
|
|
# The standard Tk entry widget uses the equivalent of
|
||
|
|
# scanNum = 10, scanDen = average character width.
|
||
|
|
# I don't know why that was chosen.
|
||
|
|
#
|
||
|
|
set State(scanNum) 1
|
||
|
|
set State(scanDen) 1
|
||
|
|
set State(deadband) 3 ;# #pixels for mouse-moved deadband.
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
### Option database settings.
|
||
|
|
#
|
||
|
|
option add *TEntry.cursor [ttk::cursor text]
|
||
|
|
|
||
|
|
### Bindings.
|
||
|
|
#
|
||
|
|
# Removed the following standard Tk bindings:
|
||
|
|
#
|
||
|
|
# <Control-Key-space>, <Control-Shift-Key-space>,
|
||
|
|
# <Key-Select>, <Shift-Key-Select>:
|
||
|
|
# Ttk entry widget doesn't use selection anchor.
|
||
|
|
# <Key-Insert>:
|
||
|
|
# Inserts PRIMARY selection (on non-Windows platforms).
|
||
|
|
# This is inconsistent with typical platform bindings.
|
||
|
|
# <Double-Shift-ButtonPress-1>, <Triple-Shift-ButtonPress-1>:
|
||
|
|
# These don't do the right thing to start with.
|
||
|
|
# <Meta-Key-b>, <Meta-Key-d>, <Meta-Key-f>,
|
||
|
|
# <Meta-Key-BackSpace>, <Meta-Key-Delete>:
|
||
|
|
# Judgment call. If <Meta> happens to be assigned to the Alt key,
|
||
|
|
# these could conflict with application accelerators.
|
||
|
|
# (Plus, who has a Meta key these days?)
|
||
|
|
# <Control-Key-t>:
|
||
|
|
# Another judgment call. If anyone misses this, let me know
|
||
|
|
# and I'll put it back.
|
||
|
|
#
|
||
|
|
|
||
|
|
## Clipboard events:
|
||
|
|
#
|
||
|
|
bind TEntry <<Cut>> { ttk::entry::Cut %W }
|
||
|
|
bind TEntry <<Copy>> { ttk::entry::Copy %W }
|
||
|
|
bind TEntry <<Paste>> { ttk::entry::Paste %W }
|
||
|
|
bind TEntry <<Clear>> { ttk::entry::Clear %W }
|
||
|
|
|
||
|
|
## Button1 bindings:
|
||
|
|
# Used for selection and navigation.
|
||
|
|
#
|
||
|
|
bind TEntry <ButtonPress-1> { ttk::entry::Press %W %x }
|
||
|
|
bind TEntry <Shift-ButtonPress-1> { ttk::entry::Shift-Press %W %x }
|
||
|
|
bind TEntry <Double-ButtonPress-1> { ttk::entry::Select %W %x word }
|
||
|
|
bind TEntry <Triple-ButtonPress-1> { ttk::entry::Select %W %x line }
|
||
|
|
bind TEntry <B1-Motion> { ttk::entry::Drag %W %x }
|
||
|
|
|
||
|
|
bind TEntry <B1-Leave> { ttk::entry::DragOut %W %m }
|
||
|
|
bind TEntry <B1-Enter> { ttk::entry::DragIn %W }
|
||
|
|
bind TEntry <ButtonRelease-1> { ttk::entry::Release %W }
|
||
|
|
|
||
|
|
bind TEntry <<ToggleSelection>> {
|
||
|
|
%W instate {!readonly !disabled} { %W icursor @%x ; focus %W }
|
||
|
|
}
|
||
|
|
|
||
|
|
## Button2 bindings:
|
||
|
|
# Used for scanning and primary transfer.
|
||
|
|
# Note: ButtonRelease-2 is mapped to <<PasteSelection>> in tk.tcl.
|
||
|
|
#
|
||
|
|
bind TEntry <ButtonPress-2> { ttk::entry::ScanMark %W %x }
|
||
|
|
bind TEntry <B2-Motion> { ttk::entry::ScanDrag %W %x }
|
||
|
|
bind TEntry <ButtonRelease-2> { ttk::entry::ScanRelease %W %x }
|
||
|
|
bind TEntry <<PasteSelection>> { ttk::entry::ScanRelease %W %x }
|
||
|
|
|
||
|
|
## Keyboard navigation bindings:
|
||
|
|
#
|
||
|
|
bind TEntry <<PrevChar>> { ttk::entry::Move %W prevchar }
|
||
|
|
bind TEntry <<NextChar>> { ttk::entry::Move %W nextchar }
|
||
|
|
bind TEntry <<PrevWord>> { ttk::entry::Move %W prevword }
|
||
|
|
bind TEntry <<NextWord>> { ttk::entry::Move %W nextword }
|
||
|
|
bind TEntry <<LineStart>> { ttk::entry::Move %W home }
|
||
|
|
bind TEntry <<LineEnd>> { ttk::entry::Move %W end }
|
||
|
|
|
||
|
|
bind TEntry <<SelectPrevChar>> { ttk::entry::Extend %W prevchar }
|
||
|
|
bind TEntry <<SelectNextChar>> { ttk::entry::Extend %W nextchar }
|
||
|
|
bind TEntry <<SelectPrevWord>> { ttk::entry::Extend %W prevword }
|
||
|
|
bind TEntry <<SelectNextWord>> { ttk::entry::Extend %W nextword }
|
||
|
|
bind TEntry <<SelectLineStart>> { ttk::entry::Extend %W home }
|
||
|
|
bind TEntry <<SelectLineEnd>> { ttk::entry::Extend %W end }
|
||
|
|
|
||
|
|
bind TEntry <<SelectAll>> { %W selection range 0 end }
|
||
|
|
bind TEntry <<SelectNone>> { %W selection clear }
|
||
|
|
|
||
|
|
bind TEntry <<TraverseIn>> { %W selection range 0 end; %W icursor end }
|
||
|
|
|
||
|
|
## Edit bindings:
|
||
|
|
#
|
||
|
|
bind TEntry <KeyPress> { ttk::entry::Insert %W %A }
|
||
|
|
bind TEntry <Key-Delete> { ttk::entry::Delete %W }
|
||
|
|
bind TEntry <Key-BackSpace> { ttk::entry::Backspace %W }
|
||
|
|
|
||
|
|
# Ignore all Alt, Meta, and Control keypresses unless explicitly bound.
|
||
|
|
# Otherwise, the <KeyPress> class binding will fire and insert the character.
|
||
|
|
# Ditto for Escape, Return, and Tab.
|
||
|
|
#
|
||
|
|
bind TEntry <Alt-KeyPress> {# nothing}
|
||
|
|
bind TEntry <Meta-KeyPress> {# nothing}
|
||
|
|
bind TEntry <Control-KeyPress> {# nothing}
|
||
|
|
bind TEntry <Key-Escape> {# nothing}
|
||
|
|
bind TEntry <Key-Return> {# nothing}
|
||
|
|
bind TEntry <Key-KP_Enter> {# nothing}
|
||
|
|
bind TEntry <Key-Tab> {# nothing}
|
||
|
|
|
||
|
|
# Argh. Apparently on Windows, the NumLock modifier is interpreted
|
||
|
|
# as a Command modifier.
|
||
|
|
if {[tk windowingsystem] eq "aqua"} {
|
||
|
|
bind TEntry <Command-KeyPress> {# nothing}
|
||
|
|
}
|
||
|
|
# Tk-on-Cocoa generates characters for these two keys. [Bug 2971663]
|
||
|
|
bind TEntry <<PrevLine>> {# nothing}
|
||
|
|
bind TEntry <<NextLine>> {# nothing}
|
||
|
|
|
||
|
|
## Additional emacs-like bindings:
|
||
|
|
#
|
||
|
|
bind TEntry <Control-Key-d> { ttk::entry::Delete %W }
|
||
|
|
bind TEntry <Control-Key-h> { ttk::entry::Backspace %W }
|
||
|
|
bind TEntry <Control-Key-k> { %W delete insert end }
|
||
|
|
|
||
|
|
### Clipboard procedures.
|
||
|
|
#
|
||
|
|
|
||
|
|
## EntrySelection -- Return the selected text of the entry.
|
||
|
|
# Raises an error if there is no selection.
|
||
|
|
#
|
||
|
|
proc ttk::entry::EntrySelection {w} {
|
||
|
|
set entryString [string range [$w get] [$w index sel.first] \
|
||
|
|
[expr {[$w index sel.last] - 1}]]
|
||
|
|
if {[$w cget -show] ne ""} {
|
||
|
|
return [string repeat [string index [$w cget -show] 0] \
|
||
|
|
[string length $entryString]]
|
||
|
|
}
|
||
|
|
return $entryString
|
||
|
|
}
|
||
|
|
|
||
|
|
## Paste -- Insert clipboard contents at current insert point.
|
||
|
|
#
|
||
|
|
proc ttk::entry::Paste {w} {
|
||
|
|
catch {
|
||
|
|
set clipboard [::tk::GetSelection $w CLIPBOARD]
|
||
|
|
PendingDelete $w
|
||
|
|
$w insert insert $clipboard
|
||
|
|
See $w insert
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
## Copy -- Copy selection to clipboard.
|
||
|
|
#
|
||
|
|
proc ttk::entry::Copy {w} {
|
||
|
|
if {![catch {EntrySelection $w} selection]} {
|
||
|
|
clipboard clear -displayof $w
|
||
|
|
clipboard append -displayof $w $selection
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
## Clear -- Delete the selection.
|
||
|
|
#
|
||
|
|
proc ttk::entry::Clear {w} {
|
||
|
|
catch { $w delete sel.first sel.last }
|
||
|
|
}
|
||
|
|
|
||
|
|
## Cut -- Copy selection to clipboard then delete it.
|
||
|
|
#
|
||
|
|
proc ttk::entry::Cut {w} {
|
||
|
|
Copy $w; Clear $w
|
||
|
|
}
|
||
|
|
|
||
|
|
### Navigation procedures.
|
||
|
|
#
|
||
|
|
|
||
|
|
## ClosestGap -- Find closest boundary between characters.
|
||
|
|
# Returns the index of the character just after the boundary.
|
||
|
|
#
|
||
|
|
proc ttk::entry::ClosestGap {w x} {
|
||
|
|
set pos [$w index @$x]
|
||
|
|
set bbox [$w bbox $pos]
|
||
|
|
if {$x - [lindex $bbox 0] > [lindex $bbox 2]/2} {
|
||
|
|
incr pos
|
||
|
|
}
|
||
|
|
return $pos
|
||
|
|
}
|
||
|
|
|
||
|
|
## See $index -- Make sure that the character at $index is visible.
|
||
|
|
#
|
||
|
|
proc ttk::entry::See {w {index insert}} {
|
||
|
|
update idletasks ;# ensure scroll data up-to-date
|
||
|
|
set c [$w index $index]
|
||
|
|
# @@@ OR: check [$w index left] / [$w index right]
|
||
|
|
if {$c < [$w index @0] || $c >= [$w index @[winfo width $w]]} {
|
||
|
|
$w xview $c
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
## NextWord -- Find the next word position.
|
||
|
|
# Note: The "next word position" follows platform conventions:
|
||
|
|
# either the next end-of-word position, or the start-of-word
|
||
|
|
# position following the next end-of-word position.
|
||
|
|
#
|
||
|
|
set ::ttk::entry::State(startNext) \
|
||
|
|
[string equal [tk windowingsystem] "win32"]
|
||
|
|
|
||
|
|
proc ttk::entry::NextWord {w start} {
|
||
|
|
variable State
|
||
|
|
set pos [tcl_endOfWord [$w get] [$w index $start]]
|
||
|
|
if {$pos >= 0 && $State(startNext)} {
|
||
|
|
set pos [tcl_startOfNextWord [$w get] $pos]
|
||
|
|
}
|
||
|
|
if {$pos < 0} {
|
||
|
|
return end
|
||
|
|
}
|
||
|
|
return $pos
|
||
|
|
}
|
||
|
|
|
||
|
|
## PrevWord -- Find the previous word position.
|
||
|
|
#
|
||
|
|
proc ttk::entry::PrevWord {w start} {
|
||
|
|
set pos [tcl_startOfPreviousWord [$w get] [$w index $start]]
|
||
|
|
if {$pos < 0} {
|
||
|
|
return 0
|
||
|
|
}
|
||
|
|
return $pos
|
||
|
|
}
|
||
|
|
|
||
|
|
## RelIndex -- Compute character/word/line-relative index.
|
||
|
|
#
|
||
|
|
proc ttk::entry::RelIndex {w where {index insert}} {
|
||
|
|
switch -- $where {
|
||
|
|
prevchar { expr {[$w index $index] - 1} }
|
||
|
|
nextchar { expr {[$w index $index] + 1} }
|
||
|
|
prevword { PrevWord $w $index }
|
||
|
|
nextword { NextWord $w $index }
|
||
|
|
home { return 0 }
|
||
|
|
end { $w index end }
|
||
|
|
default { error "Bad relative index $index" }
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
## Move -- Move insert cursor to relative location.
|
||
|
|
# Also clears the selection, if any, and makes sure
|
||
|
|
# that the insert cursor is visible.
|
||
|
|
#
|
||
|
|
proc ttk::entry::Move {w where} {
|
||
|
|
$w icursor [RelIndex $w $where]
|
||
|
|
$w selection clear
|
||
|
|
See $w insert
|
||
|
|
}
|
||
|
|
|
||
|
|
### Selection procedures.
|
||
|
|
#
|
||
|
|
|
||
|
|
## ExtendTo -- Extend the selection to the specified index.
|
||
|
|
#
|
||
|
|
# The other end of the selection (the anchor) is determined as follows:
|
||
|
|
#
|
||
|
|
# (1) if there is no selection, the anchor is the insert cursor;
|
||
|
|
# (2) if the index is outside the selection, grow the selection;
|
||
|
|
# (3) if the insert cursor is at one end of the selection, anchor the other end
|
||
|
|
# (4) otherwise anchor the start of the selection
|
||
|
|
#
|
||
|
|
# The insert cursor is placed at the new end of the selection.
|
||
|
|
#
|
||
|
|
# Returns: selection anchor.
|
||
|
|
#
|
||
|
|
proc ttk::entry::ExtendTo {w index} {
|
||
|
|
set index [$w index $index]
|
||
|
|
set insert [$w index insert]
|
||
|
|
|
||
|
|
# Figure out selection anchor:
|
||
|
|
if {![$w selection present]} {
|
||
|
|
set anchor $insert
|
||
|
|
} else {
|
||
|
|
set selfirst [$w index sel.first]
|
||
|
|
set sellast [$w index sel.last]
|
||
|
|
|
||
|
|
if { ($index < $selfirst)
|
||
|
|
|| ($insert == $selfirst && $index <= $sellast)
|
||
|
|
} {
|
||
|
|
set anchor $sellast
|
||
|
|
} else {
|
||
|
|
set anchor $selfirst
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
# Extend selection:
|
||
|
|
if {$anchor < $index} {
|
||
|
|
$w selection range $anchor $index
|
||
|
|
} else {
|
||
|
|
$w selection range $index $anchor
|
||
|
|
}
|
||
|
|
|
||
|
|
$w icursor $index
|
||
|
|
return $anchor
|
||
|
|
}
|
||
|
|
|
||
|
|
## Extend -- Extend the selection to a relative position, show insert cursor
|
||
|
|
#
|
||
|
|
proc ttk::entry::Extend {w where} {
|
||
|
|
ExtendTo $w [RelIndex $w $where]
|
||
|
|
See $w
|
||
|
|
}
|
||
|
|
|
||
|
|
### Button 1 binding procedures.
|
||
|
|
#
|
||
|
|
# Double-clicking followed by a drag enters "word-select" mode.
|
||
|
|
# Triple-clicking enters "line-select" mode.
|
||
|
|
#
|
||
|
|
|
||
|
|
## Press -- ButtonPress-1 binding.
|
||
|
|
# Set the insertion cursor, claim the input focus, set up for
|
||
|
|
# future drag operations.
|
||
|
|
#
|
||
|
|
proc ttk::entry::Press {w x} {
|
||
|
|
variable State
|
||
|
|
|
||
|
|
$w icursor [ClosestGap $w $x]
|
||
|
|
$w selection clear
|
||
|
|
$w instate !disabled { focus $w }
|
||
|
|
|
||
|
|
# Set up for future drag, double-click, or triple-click.
|
||
|
|
set State(x) $x
|
||
|
|
set State(selectMode) char
|
||
|
|
set State(anchor) [$w index insert]
|
||
|
|
}
|
||
|
|
|
||
|
|
## Shift-Press -- Shift-ButtonPress-1 binding.
|
||
|
|
# Extends the selection, sets anchor for future drag operations.
|
||
|
|
#
|
||
|
|
proc ttk::entry::Shift-Press {w x} {
|
||
|
|
variable State
|
||
|
|
|
||
|
|
focus $w
|
||
|
|
set anchor [ExtendTo $w @$x]
|
||
|
|
|
||
|
|
set State(x) $x
|
||
|
|
set State(selectMode) char
|
||
|
|
set State(anchor) $anchor
|
||
|
|
}
|
||
|
|
|
||
|
|
## Select $w $x $mode -- Binding for double- and triple- clicks.
|
||
|
|
# Selects a word or line (according to mode),
|
||
|
|
# and sets the selection mode for subsequent drag operations.
|
||
|
|
#
|
||
|
|
proc ttk::entry::Select {w x mode} {
|
||
|
|
variable State
|
||
|
|
set cur [ClosestGap $w $x]
|
||
|
|
|
||
|
|
switch -- $mode {
|
||
|
|
word { WordSelect $w $cur $cur }
|
||
|
|
line { LineSelect $w $cur $cur }
|
||
|
|
char { # no-op }
|
||
|
|
}
|
||
|
|
|
||
|
|
set State(anchor) $cur
|
||
|
|
set State(selectMode) $mode
|
||
|
|
}
|
||
|
|
|
||
|
|
## Drag -- Button1 motion binding.
|
||
|
|
#
|
||
|
|
proc ttk::entry::Drag {w x} {
|
||
|
|
variable State
|
||
|
|
set State(x) $x
|
||
|
|
DragTo $w $x
|
||
|
|
}
|
||
|
|
|
||
|
|
## DragTo $w $x -- Extend selection to $x based on current selection mode.
|
||
|
|
#
|
||
|
|
proc ttk::entry::DragTo {w x} {
|
||
|
|
variable State
|
||
|
|
|
||
|
|
set cur [ClosestGap $w $x]
|
||
|
|
switch $State(selectMode) {
|
||
|
|
char { CharSelect $w $State(anchor) $cur }
|
||
|
|
word { WordSelect $w $State(anchor) $cur }
|
||
|
|
line { LineSelect $w $State(anchor) $cur }
|
||
|
|
none { # no-op }
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
## <B1-Leave> binding:
|
||
|
|
# Begin autoscroll.
|
||
|
|
#
|
||
|
|
proc ttk::entry::DragOut {w mode} {
|
||
|
|
variable State
|
||
|
|
if {$State(selectMode) ne "none" && $mode eq "NotifyNormal"} {
|
||
|
|
ttk::Repeatedly ttk::entry::AutoScroll $w
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
## <B1-Enter> binding
|
||
|
|
# Suspend autoscroll.
|
||
|
|
#
|
||
|
|
proc ttk::entry::DragIn {w} {
|
||
|
|
ttk::CancelRepeat
|
||
|
|
}
|
||
|
|
|
||
|
|
## <ButtonRelease-1> binding
|
||
|
|
#
|
||
|
|
proc ttk::entry::Release {w} {
|
||
|
|
variable State
|
||
|
|
set State(selectMode) none
|
||
|
|
ttk::CancelRepeat ;# suspend autoscroll
|
||
|
|
}
|
||
|
|
|
||
|
|
## AutoScroll
|
||
|
|
# Called repeatedly when the mouse is outside an entry window
|
||
|
|
# with Button 1 down. Scroll the window left or right,
|
||
|
|
# depending on where the mouse left the window, and extend
|
||
|
|
# the selection according to the current selection mode.
|
||
|
|
#
|
||
|
|
# TODO: AutoScroll should repeat faster (50ms) than normal autorepeat.
|
||
|
|
# TODO: Need a way for Repeat scripts to cancel themselves.
|
||
|
|
#
|
||
|
|
proc ttk::entry::AutoScroll {w} {
|
||
|
|
variable State
|
||
|
|
if {![winfo exists $w]} return
|
||
|
|
set x $State(x)
|
||
|
|
if {$x > [winfo width $w]} {
|
||
|
|
$w xview scroll 2 units
|
||
|
|
DragTo $w $x
|
||
|
|
} elseif {$x < 0} {
|
||
|
|
$w xview scroll -2 units
|
||
|
|
DragTo $w $x
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
## CharSelect -- select characters between index $from and $to
|
||
|
|
#
|
||
|
|
proc ttk::entry::CharSelect {w from to} {
|
||
|
|
if {$to <= $from} {
|
||
|
|
$w selection range $to $from
|
||
|
|
} else {
|
||
|
|
$w selection range $from $to
|
||
|
|
}
|
||
|
|
$w icursor $to
|
||
|
|
}
|
||
|
|
|
||
|
|
## WordSelect -- Select whole words between index $from and $to
|
||
|
|
#
|
||
|
|
proc ttk::entry::WordSelect {w from to} {
|
||
|
|
if {$to < $from} {
|
||
|
|
set first [WordBack [$w get] $to]
|
||
|
|
set last [WordForward [$w get] $from]
|
||
|
|
$w icursor $first
|
||
|
|
} else {
|
||
|
|
set first [WordBack [$w get] $from]
|
||
|
|
set last [WordForward [$w get] $to]
|
||
|
|
$w icursor $last
|
||
|
|
}
|
||
|
|
$w selection range $first $last
|
||
|
|
}
|
||
|
|
|
||
|
|
## WordBack, WordForward -- helper routines for WordSelect.
|
||
|
|
#
|
||
|
|
proc ttk::entry::WordBack {text index} {
|
||
|
|
if {[set pos [tcl_wordBreakBefore $text $index]] < 0} { return 0 }
|
||
|
|
return $pos
|
||
|
|
}
|
||
|
|
proc ttk::entry::WordForward {text index} {
|
||
|
|
if {[set pos [tcl_wordBreakAfter $text $index]] < 0} { return end }
|
||
|
|
return $pos
|
||
|
|
}
|
||
|
|
|
||
|
|
## LineSelect -- Select the entire line.
|
||
|
|
#
|
||
|
|
proc ttk::entry::LineSelect {w _ _} {
|
||
|
|
variable State
|
||
|
|
$w selection range 0 end
|
||
|
|
$w icursor end
|
||
|
|
}
|
||
|
|
|
||
|
|
### Button 2 binding procedures.
|
||
|
|
#
|
||
|
|
|
||
|
|
## ScanMark -- ButtonPress-2 binding.
|
||
|
|
# Marks the start of a scan or primary transfer operation.
|
||
|
|
#
|
||
|
|
proc ttk::entry::ScanMark {w x} {
|
||
|
|
variable State
|
||
|
|
set State(scanX) $x
|
||
|
|
set State(scanIndex) [$w index @0]
|
||
|
|
set State(scanMoved) 0
|
||
|
|
}
|
||
|
|
|
||
|
|
## ScanDrag -- Button2 motion binding.
|
||
|
|
#
|
||
|
|
proc ttk::entry::ScanDrag {w x} {
|
||
|
|
variable State
|
||
|
|
|
||
|
|
set dx [expr {$State(scanX) - $x}]
|
||
|
|
if {abs($dx) > $State(deadband)} {
|
||
|
|
set State(scanMoved) 1
|
||
|
|
}
|
||
|
|
set left [expr {$State(scanIndex) + ($dx*$State(scanNum))/$State(scanDen)}]
|
||
|
|
$w xview $left
|
||
|
|
|
||
|
|
if {$left != [set newLeft [$w index @0]]} {
|
||
|
|
# We've scanned past one end of the entry;
|
||
|
|
# reset the mark so that the text will start dragging again
|
||
|
|
# as soon as the mouse reverses direction.
|
||
|
|
#
|
||
|
|
set State(scanX) $x
|
||
|
|
set State(scanIndex) $newLeft
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
## ScanRelease -- Button2 release binding.
|
||
|
|
# Do a primary transfer if the mouse has not moved since the button press.
|
||
|
|
#
|
||
|
|
proc ttk::entry::ScanRelease {w x} {
|
||
|
|
variable State
|
||
|
|
if {!$State(scanMoved)} {
|
||
|
|
$w instate {!disabled !readonly} {
|
||
|
|
$w icursor [ClosestGap $w $x]
|
||
|
|
catch {$w insert insert [::tk::GetSelection $w PRIMARY]}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
### Insertion and deletion procedures.
|
||
|
|
#
|
||
|
|
|
||
|
|
## PendingDelete -- Delete selection prior to insert.
|
||
|
|
# If the entry currently has a selection, delete it and
|
||
|
|
# set the insert position to where the selection was.
|
||
|
|
# Returns: 1 if pending delete occurred, 0 if nothing was selected.
|
||
|
|
#
|
||
|
|
proc ttk::entry::PendingDelete {w} {
|
||
|
|
if {[$w selection present]} {
|
||
|
|
$w icursor sel.first
|
||
|
|
$w delete sel.first sel.last
|
||
|
|
return 1
|
||
|
|
}
|
||
|
|
return 0
|
||
|
|
}
|
||
|
|
|
||
|
|
## Insert -- Insert text into the entry widget.
|
||
|
|
# If a selection is present, the new text replaces it.
|
||
|
|
# Otherwise, the new text is inserted at the insert cursor.
|
||
|
|
#
|
||
|
|
proc ttk::entry::Insert {w s} {
|
||
|
|
if {$s eq ""} { return }
|
||
|
|
PendingDelete $w
|
||
|
|
$w insert insert $s
|
||
|
|
See $w insert
|
||
|
|
}
|
||
|
|
|
||
|
|
## Backspace -- Backspace over the character just before the insert cursor.
|
||
|
|
# If there is a selection, delete that instead.
|
||
|
|
# If the new insert position is offscreen to the left,
|
||
|
|
# scroll to place the cursor at about the middle of the window.
|
||
|
|
#
|
||
|
|
proc ttk::entry::Backspace {w} {
|
||
|
|
if {[PendingDelete $w]} {
|
||
|
|
See $w
|
||
|
|
return
|
||
|
|
}
|
||
|
|
set x [expr {[$w index insert] - 1}]
|
||
|
|
if {$x < 0} { return }
|
||
|
|
|
||
|
|
$w delete $x
|
||
|
|
|
||
|
|
if {[$w index @0] >= [$w index insert]} {
|
||
|
|
set range [$w xview]
|
||
|
|
set left [lindex $range 0]
|
||
|
|
set right [lindex $range 1]
|
||
|
|
$w xview moveto [expr {$left - ($right - $left)/2.0}]
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
## Delete -- Delete the character after the insert cursor.
|
||
|
|
# If there is a selection, delete that instead.
|
||
|
|
#
|
||
|
|
proc ttk::entry::Delete {w} {
|
||
|
|
if {![PendingDelete $w]} {
|
||
|
|
$w delete insert
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
#*EOF*
|