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1 | # entry.tcl -- |
2 | # | |
3 | # This file defines the default bindings for Tk entry widgets and provides | |
4 | # procedures that help in implementing those bindings. | |
5 | # | |
6 | # RCS: @(#) $Id: entry.tcl,v 1.21 2003/01/23 23:30:11 drh Exp $ | |
7 | # | |
8 | # Copyright (c) 1992-1994 The Regents of the University of California. | |
9 | # Copyright (c) 1994-1997 Sun Microsystems, Inc. | |
10 | # | |
11 | # See the file "license.terms" for information on usage and redistribution | |
12 | # of this file, and for a DISCLAIMER OF ALL WARRANTIES. | |
13 | # | |
14 | ||
15 | #------------------------------------------------------------------------- | |
16 | # Elements of tk::Priv that are used in this file: | |
17 | # | |
18 | # afterId - If non-null, it means that auto-scanning is underway | |
19 | # and it gives the "after" id for the next auto-scan | |
20 | # command to be executed. | |
21 | # mouseMoved - Non-zero means the mouse has moved a significant | |
22 | # amount since the button went down (so, for example, | |
23 | # start dragging out a selection). | |
24 | # pressX - X-coordinate at which the mouse button was pressed. | |
25 | # selectMode - The style of selection currently underway: | |
26 | # char, word, or line. | |
27 | # x, y - Last known mouse coordinates for scanning | |
28 | # and auto-scanning. | |
29 | # data - Used for Cut and Copy | |
30 | #------------------------------------------------------------------------- | |
31 | ||
32 | #------------------------------------------------------------------------- | |
33 | # The code below creates the default class bindings for entries. | |
34 | #------------------------------------------------------------------------- | |
35 | bind Entry <<Cut>> { | |
36 | if {![catch {tk::EntryGetSelection %W} tk::Priv(data)]} { | |
37 | clipboard clear -displayof %W | |
38 | clipboard append -displayof %W $tk::Priv(data) | |
39 | %W delete sel.first sel.last | |
40 | unset tk::Priv(data) | |
41 | } | |
42 | } | |
43 | bind Entry <<Copy>> { | |
44 | if {![catch {tk::EntryGetSelection %W} tk::Priv(data)]} { | |
45 | clipboard clear -displayof %W | |
46 | clipboard append -displayof %W $tk::Priv(data) | |
47 | unset tk::Priv(data) | |
48 | } | |
49 | } | |
50 | bind Entry <<Paste>> { | |
51 | global tcl_platform | |
52 | catch { | |
53 | if {[string compare [tk windowingsystem] "x11"]} { | |
54 | catch { | |
55 | %W delete sel.first sel.last | |
56 | } | |
57 | } | |
58 | %W insert insert [::tk::GetSelection %W CLIPBOARD] | |
59 | tk::EntrySeeInsert %W | |
60 | } | |
61 | } | |
62 | bind Entry <<Clear>> { | |
63 | %W delete sel.first sel.last | |
64 | } | |
65 | bind Entry <<PasteSelection>> { | |
66 | if {$tk_strictMotif || ![info exists tk::Priv(mouseMoved)] | |
67 | || !$tk::Priv(mouseMoved)} { | |
68 | tk::EntryPaste %W %x | |
69 | } | |
70 | } | |
71 | ||
72 | # Standard Motif bindings: | |
73 | ||
74 | bind Entry <1> { | |
75 | tk::EntryButton1 %W %x | |
76 | %W selection clear | |
77 | } | |
78 | bind Entry <B1-Motion> { | |
79 | set tk::Priv(x) %x | |
80 | tk::EntryMouseSelect %W %x | |
81 | } | |
82 | bind Entry <Double-1> { | |
83 | set tk::Priv(selectMode) word | |
84 | tk::EntryMouseSelect %W %x | |
85 | catch {%W icursor sel.last} | |
86 | } | |
87 | bind Entry <Triple-1> { | |
88 | set tk::Priv(selectMode) line | |
89 | tk::EntryMouseSelect %W %x | |
90 | catch {%W icursor sel.last} | |
91 | } | |
92 | bind Entry <Shift-1> { | |
93 | set tk::Priv(selectMode) char | |
94 | %W selection adjust @%x | |
95 | } | |
96 | bind Entry <Double-Shift-1> { | |
97 | set tk::Priv(selectMode) word | |
98 | tk::EntryMouseSelect %W %x | |
99 | } | |
100 | bind Entry <Triple-Shift-1> { | |
101 | set tk::Priv(selectMode) line | |
102 | tk::EntryMouseSelect %W %x | |
103 | } | |
104 | bind Entry <B1-Leave> { | |
105 | set tk::Priv(x) %x | |
106 | tk::EntryAutoScan %W | |
107 | } | |
108 | bind Entry <B1-Enter> { | |
109 | tk::CancelRepeat | |
110 | } | |
111 | bind Entry <ButtonRelease-1> { | |
112 | tk::CancelRepeat | |
113 | } | |
114 | bind Entry <Control-1> { | |
115 | %W icursor @%x | |
116 | } | |
117 | ||
118 | bind Entry <Left> { | |
119 | tk::EntrySetCursor %W [expr {[%W index insert] - 1}] | |
120 | } | |
121 | bind Entry <Right> { | |
122 | tk::EntrySetCursor %W [expr {[%W index insert] + 1}] | |
123 | } | |
124 | bind Entry <Shift-Left> { | |
125 | tk::EntryKeySelect %W [expr {[%W index insert] - 1}] | |
126 | tk::EntrySeeInsert %W | |
127 | } | |
128 | bind Entry <Shift-Right> { | |
129 | tk::EntryKeySelect %W [expr {[%W index insert] + 1}] | |
130 | tk::EntrySeeInsert %W | |
131 | } | |
132 | bind Entry <Control-Left> { | |
133 | tk::EntrySetCursor %W [tk::EntryPreviousWord %W insert] | |
134 | } | |
135 | bind Entry <Control-Right> { | |
136 | tk::EntrySetCursor %W [tk::EntryNextWord %W insert] | |
137 | } | |
138 | bind Entry <Shift-Control-Left> { | |
139 | tk::EntryKeySelect %W [tk::EntryPreviousWord %W insert] | |
140 | tk::EntrySeeInsert %W | |
141 | } | |
142 | bind Entry <Shift-Control-Right> { | |
143 | tk::EntryKeySelect %W [tk::EntryNextWord %W insert] | |
144 | tk::EntrySeeInsert %W | |
145 | } | |
146 | bind Entry <Home> { | |
147 | tk::EntrySetCursor %W 0 | |
148 | } | |
149 | bind Entry <Shift-Home> { | |
150 | tk::EntryKeySelect %W 0 | |
151 | tk::EntrySeeInsert %W | |
152 | } | |
153 | bind Entry <End> { | |
154 | tk::EntrySetCursor %W end | |
155 | } | |
156 | bind Entry <Shift-End> { | |
157 | tk::EntryKeySelect %W end | |
158 | tk::EntrySeeInsert %W | |
159 | } | |
160 | ||
161 | bind Entry <Delete> { | |
162 | if {[%W selection present]} { | |
163 | %W delete sel.first sel.last | |
164 | } else { | |
165 | %W delete insert | |
166 | } | |
167 | } | |
168 | bind Entry <BackSpace> { | |
169 | tk::EntryBackspace %W | |
170 | } | |
171 | ||
172 | bind Entry <Control-space> { | |
173 | %W selection from insert | |
174 | } | |
175 | bind Entry <Select> { | |
176 | %W selection from insert | |
177 | } | |
178 | bind Entry <Control-Shift-space> { | |
179 | %W selection adjust insert | |
180 | } | |
181 | bind Entry <Shift-Select> { | |
182 | %W selection adjust insert | |
183 | } | |
184 | bind Entry <Control-slash> { | |
185 | %W selection range 0 end | |
186 | } | |
187 | bind Entry <Control-backslash> { | |
188 | %W selection clear | |
189 | } | |
190 | bind Entry <KeyPress> { | |
191 | tk::CancelRepeat | |
192 | tk::EntryInsert %W %A | |
193 | } | |
194 | ||
195 | # Ignore all Alt, Meta, and Control keypresses unless explicitly bound. | |
196 | # Otherwise, if a widget binding for one of these is defined, the | |
197 | # <KeyPress> class binding will also fire and insert the character, | |
198 | # which is wrong. Ditto for Escape, Return, and Tab. | |
199 | ||
200 | bind Entry <Alt-KeyPress> {# nothing} | |
201 | bind Entry <Meta-KeyPress> {# nothing} | |
202 | bind Entry <Control-KeyPress> {# nothing} | |
203 | bind Entry <Escape> {# nothing} | |
204 | bind Entry <Return> {# nothing} | |
205 | bind Entry <KP_Enter> {# nothing} | |
206 | bind Entry <Tab> {# nothing} | |
207 | if {[string equal [tk windowingsystem] "classic"] | |
208 | || [string equal [tk windowingsystem] "aqua"]} { | |
209 | bind Entry <Command-KeyPress> {# nothing} | |
210 | } | |
211 | ||
212 | # On Windows, paste is done using Shift-Insert. Shift-Insert already | |
213 | # generates the <<Paste>> event, so we don't need to do anything here. | |
214 | if {[string compare $tcl_platform(platform) "windows"]} { | |
215 | bind Entry <Insert> { | |
216 | catch {tk::EntryInsert %W [::tk::GetSelection %W PRIMARY]} | |
217 | } | |
218 | } | |
219 | ||
220 | # Additional emacs-like bindings: | |
221 | ||
222 | bind Entry <Control-a> { | |
223 | if {!$tk_strictMotif} { | |
224 | tk::EntrySetCursor %W 0 | |
225 | } | |
226 | } | |
227 | bind Entry <Control-b> { | |
228 | if {!$tk_strictMotif} { | |
229 | tk::EntrySetCursor %W [expr {[%W index insert] - 1}] | |
230 | } | |
231 | } | |
232 | bind Entry <Control-d> { | |
233 | if {!$tk_strictMotif} { | |
234 | %W delete insert | |
235 | } | |
236 | } | |
237 | bind Entry <Control-e> { | |
238 | if {!$tk_strictMotif} { | |
239 | tk::EntrySetCursor %W end | |
240 | } | |
241 | } | |
242 | bind Entry <Control-f> { | |
243 | if {!$tk_strictMotif} { | |
244 | tk::EntrySetCursor %W [expr {[%W index insert] + 1}] | |
245 | } | |
246 | } | |
247 | bind Entry <Control-h> { | |
248 | if {!$tk_strictMotif} { | |
249 | tk::EntryBackspace %W | |
250 | } | |
251 | } | |
252 | bind Entry <Control-k> { | |
253 | if {!$tk_strictMotif} { | |
254 | %W delete insert end | |
255 | } | |
256 | } | |
257 | bind Entry <Control-t> { | |
258 | if {!$tk_strictMotif} { | |
259 | tk::EntryTranspose %W | |
260 | } | |
261 | } | |
262 | bind Entry <Meta-b> { | |
263 | if {!$tk_strictMotif} { | |
264 | tk::EntrySetCursor %W [tk::EntryPreviousWord %W insert] | |
265 | } | |
266 | } | |
267 | bind Entry <Meta-d> { | |
268 | if {!$tk_strictMotif} { | |
269 | %W delete insert [tk::EntryNextWord %W insert] | |
270 | } | |
271 | } | |
272 | bind Entry <Meta-f> { | |
273 | if {!$tk_strictMotif} { | |
274 | tk::EntrySetCursor %W [tk::EntryNextWord %W insert] | |
275 | } | |
276 | } | |
277 | bind Entry <Meta-BackSpace> { | |
278 | if {!$tk_strictMotif} { | |
279 | %W delete [tk::EntryPreviousWord %W insert] insert | |
280 | } | |
281 | } | |
282 | bind Entry <Meta-Delete> { | |
283 | if {!$tk_strictMotif} { | |
284 | %W delete [tk::EntryPreviousWord %W insert] insert | |
285 | } | |
286 | } | |
287 | ||
288 | # A few additional bindings of my own. | |
289 | ||
290 | bind Entry <2> { | |
291 | if {!$tk_strictMotif} { | |
292 | ::tk::EntryScanMark %W %x | |
293 | } | |
294 | } | |
295 | bind Entry <B2-Motion> { | |
296 | if {!$tk_strictMotif} { | |
297 | ::tk::EntryScanDrag %W %x | |
298 | } | |
299 | } | |
300 | ||
301 | # ::tk::EntryClosestGap -- | |
302 | # Given x and y coordinates, this procedure finds the closest boundary | |
303 | # between characters to the given coordinates and returns the index | |
304 | # of the character just after the boundary. | |
305 | # | |
306 | # Arguments: | |
307 | # w - The entry window. | |
308 | # x - X-coordinate within the window. | |
309 | ||
310 | proc ::tk::EntryClosestGap {w x} { | |
311 | set pos [$w index @$x] | |
312 | set bbox [$w bbox $pos] | |
313 | if {($x - [lindex $bbox 0]) < ([lindex $bbox 2]/2)} { | |
314 | return $pos | |
315 | } | |
316 | incr pos | |
317 | } | |
318 | ||
319 | # ::tk::EntryButton1 -- | |
320 | # This procedure is invoked to handle button-1 presses in entry | |
321 | # widgets. It moves the insertion cursor, sets the selection anchor, | |
322 | # and claims the input focus. | |
323 | # | |
324 | # Arguments: | |
325 | # w - The entry window in which the button was pressed. | |
326 | # x - The x-coordinate of the button press. | |
327 | ||
328 | proc ::tk::EntryButton1 {w x} { | |
329 | variable ::tk::Priv | |
330 | ||
331 | set Priv(selectMode) char | |
332 | set Priv(mouseMoved) 0 | |
333 | set Priv(pressX) $x | |
334 | $w icursor [EntryClosestGap $w $x] | |
335 | $w selection from insert | |
336 | if {[string compare "disabled" [$w cget -state]]} {focus $w} | |
337 | } | |
338 | ||
339 | # ::tk::EntryMouseSelect -- | |
340 | # This procedure is invoked when dragging out a selection with | |
341 | # the mouse. Depending on the selection mode (character, word, | |
342 | # line) it selects in different-sized units. This procedure | |
343 | # ignores mouse motions initially until the mouse has moved from | |
344 | # one character to another or until there have been multiple clicks. | |
345 | # | |
346 | # Arguments: | |
347 | # w - The entry window in which the button was pressed. | |
348 | # x - The x-coordinate of the mouse. | |
349 | ||
350 | proc ::tk::EntryMouseSelect {w x} { | |
351 | variable ::tk::Priv | |
352 | ||
353 | set cur [EntryClosestGap $w $x] | |
354 | set anchor [$w index anchor] | |
355 | if {($cur != $anchor) || (abs($Priv(pressX) - $x) >= 3)} { | |
356 | set Priv(mouseMoved) 1 | |
357 | } | |
358 | switch $Priv(selectMode) { | |
359 | char { | |
360 | if {$Priv(mouseMoved)} { | |
361 | if {$cur < $anchor} { | |
362 | $w selection range $cur $anchor | |
363 | } elseif {$cur > $anchor} { | |
364 | $w selection range $anchor $cur | |
365 | } else { | |
366 | $w selection clear | |
367 | } | |
368 | } | |
369 | } | |
370 | word { | |
371 | if {$cur < [$w index anchor]} { | |
372 | set before [tcl_wordBreakBefore [$w get] $cur] | |
373 | set after [tcl_wordBreakAfter [$w get] [expr {$anchor-1}]] | |
374 | } else { | |
375 | set before [tcl_wordBreakBefore [$w get] $anchor] | |
376 | set after [tcl_wordBreakAfter [$w get] [expr {$cur - 1}]] | |
377 | } | |
378 | if {$before < 0} { | |
379 | set before 0 | |
380 | } | |
381 | if {$after < 0} { | |
382 | set after end | |
383 | } | |
384 | $w selection range $before $after | |
385 | } | |
386 | line { | |
387 | $w selection range 0 end | |
388 | } | |
389 | } | |
390 | if {$Priv(mouseMoved)} { | |
391 | $w icursor $cur | |
392 | } | |
393 | update idletasks | |
394 | } | |
395 | ||
396 | # ::tk::EntryPaste -- | |
397 | # This procedure sets the insertion cursor to the current mouse position, | |
398 | # pastes the selection there, and sets the focus to the window. | |
399 | # | |
400 | # Arguments: | |
401 | # w - The entry window. | |
402 | # x - X position of the mouse. | |
403 | ||
404 | proc ::tk::EntryPaste {w x} { | |
405 | $w icursor [EntryClosestGap $w $x] | |
406 | catch {$w insert insert [::tk::GetSelection $w PRIMARY]} | |
407 | if {[string compare "disabled" [$w cget -state]]} {focus $w} | |
408 | } | |
409 | ||
410 | # ::tk::EntryAutoScan -- | |
411 | # This procedure is invoked when the mouse leaves an entry window | |
412 | # with button 1 down. It scrolls the window left or right, | |
413 | # depending on where the mouse is, and reschedules itself as an | |
414 | # "after" command so that the window continues to scroll until the | |
415 | # mouse moves back into the window or the mouse button is released. | |
416 | # | |
417 | # Arguments: | |
418 | # w - The entry window. | |
419 | ||
420 | proc ::tk::EntryAutoScan {w} { | |
421 | variable ::tk::Priv | |
422 | set x $Priv(x) | |
423 | if {![winfo exists $w]} return | |
424 | if {$x >= [winfo width $w]} { | |
425 | $w xview scroll 2 units | |
426 | EntryMouseSelect $w $x | |
427 | } elseif {$x < 0} { | |
428 | $w xview scroll -2 units | |
429 | EntryMouseSelect $w $x | |
430 | } | |
431 | set Priv(afterId) [after 50 [list tk::EntryAutoScan $w]] | |
432 | } | |
433 | ||
434 | # ::tk::EntryKeySelect -- | |
435 | # This procedure is invoked when stroking out selections using the | |
436 | # keyboard. It moves the cursor to a new position, then extends | |
437 | # the selection to that position. | |
438 | # | |
439 | # Arguments: | |
440 | # w - The entry window. | |
441 | # new - A new position for the insertion cursor (the cursor hasn't | |
442 | # actually been moved to this position yet). | |
443 | ||
444 | proc ::tk::EntryKeySelect {w new} { | |
445 | if {![$w selection present]} { | |
446 | $w selection from insert | |
447 | $w selection to $new | |
448 | } else { | |
449 | $w selection adjust $new | |
450 | } | |
451 | $w icursor $new | |
452 | } | |
453 | ||
454 | # ::tk::EntryInsert -- | |
455 | # Insert a string into an entry at the point of the insertion cursor. | |
456 | # If there is a selection in the entry, and it covers the point of the | |
457 | # insertion cursor, then delete the selection before inserting. | |
458 | # | |
459 | # Arguments: | |
460 | # w - The entry window in which to insert the string | |
461 | # s - The string to insert (usually just a single character) | |
462 | ||
463 | proc ::tk::EntryInsert {w s} { | |
464 | if {[string equal $s ""]} { | |
465 | return | |
466 | } | |
467 | catch { | |
468 | set insert [$w index insert] | |
469 | if {([$w index sel.first] <= $insert) | |
470 | && ([$w index sel.last] >= $insert)} { | |
471 | $w delete sel.first sel.last | |
472 | } | |
473 | } | |
474 | $w insert insert $s | |
475 | EntrySeeInsert $w | |
476 | } | |
477 | ||
478 | # ::tk::EntryBackspace -- | |
479 | # Backspace over the character just before the insertion cursor. | |
480 | # If backspacing would move the cursor off the left edge of the | |
481 | # window, reposition the cursor at about the middle of the window. | |
482 | # | |
483 | # Arguments: | |
484 | # w - The entry window in which to backspace. | |
485 | ||
486 | proc ::tk::EntryBackspace w { | |
487 | if {[$w selection present]} { | |
488 | $w delete sel.first sel.last | |
489 | } else { | |
490 | set x [expr {[$w index insert] - 1}] | |
491 | if {$x >= 0} {$w delete $x} | |
492 | if {[$w index @0] >= [$w index insert]} { | |
493 | set range [$w xview] | |
494 | set left [lindex $range 0] | |
495 | set right [lindex $range 1] | |
496 | $w xview moveto [expr {$left - ($right - $left)/2.0}] | |
497 | } | |
498 | } | |
499 | } | |
500 | ||
501 | # ::tk::EntrySeeInsert -- | |
502 | # Make sure that the insertion cursor is visible in the entry window. | |
503 | # If not, adjust the view so that it is. | |
504 | # | |
505 | # Arguments: | |
506 | # w - The entry window. | |
507 | ||
508 | proc ::tk::EntrySeeInsert w { | |
509 | set c [$w index insert] | |
510 | if {($c < [$w index @0]) || ($c > [$w index @[winfo width $w]])} { | |
511 | $w xview $c | |
512 | } | |
513 | } | |
514 | ||
515 | # ::tk::EntrySetCursor - | |
516 | # Move the insertion cursor to a given position in an entry. Also | |
517 | # clears the selection, if there is one in the entry, and makes sure | |
518 | # that the insertion cursor is visible. | |
519 | # | |
520 | # Arguments: | |
521 | # w - The entry window. | |
522 | # pos - The desired new position for the cursor in the window. | |
523 | ||
524 | proc ::tk::EntrySetCursor {w pos} { | |
525 | $w icursor $pos | |
526 | $w selection clear | |
527 | EntrySeeInsert $w | |
528 | } | |
529 | ||
530 | # ::tk::EntryTranspose - | |
531 | # This procedure implements the "transpose" function for entry widgets. | |
532 | # It tranposes the characters on either side of the insertion cursor, | |
533 | # unless the cursor is at the end of the line. In this case it | |
534 | # transposes the two characters to the left of the cursor. In either | |
535 | # case, the cursor ends up to the right of the transposed characters. | |
536 | # | |
537 | # Arguments: | |
538 | # w - The entry window. | |
539 | ||
540 | proc ::tk::EntryTranspose w { | |
541 | set i [$w index insert] | |
542 | if {$i < [$w index end]} { | |
543 | incr i | |
544 | } | |
545 | set first [expr {$i-2}] | |
546 | if {$first < 0} { | |
547 | return | |
548 | } | |
549 | set data [$w get] | |
550 | set new [string index $data [expr {$i-1}]][string index $data $first] | |
551 | $w delete $first $i | |
552 | $w insert insert $new | |
553 | EntrySeeInsert $w | |
554 | } | |
555 | ||
556 | # ::tk::EntryNextWord -- | |
557 | # Returns the index of the next word position after a given position in the | |
558 | # entry. The next word is platform dependent and may be either the next | |
559 | # end-of-word position or the next start-of-word position after the next | |
560 | # end-of-word position. | |
561 | # | |
562 | # Arguments: | |
563 | # w - The entry window in which the cursor is to move. | |
564 | # start - Position at which to start search. | |
565 | ||
566 | if {[string equal $tcl_platform(platform) "windows"]} { | |
567 | proc ::tk::EntryNextWord {w start} { | |
568 | set pos [tcl_endOfWord [$w get] [$w index $start]] | |
569 | if {$pos >= 0} { | |
570 | set pos [tcl_startOfNextWord [$w get] $pos] | |
571 | } | |
572 | if {$pos < 0} { | |
573 | return end | |
574 | } | |
575 | return $pos | |
576 | } | |
577 | } else { | |
578 | proc ::tk::EntryNextWord {w start} { | |
579 | set pos [tcl_endOfWord [$w get] [$w index $start]] | |
580 | if {$pos < 0} { | |
581 | return end | |
582 | } | |
583 | return $pos | |
584 | } | |
585 | } | |
586 | ||
587 | # ::tk::EntryPreviousWord -- | |
588 | # | |
589 | # Returns the index of the previous word position before a given | |
590 | # position in the entry. | |
591 | # | |
592 | # Arguments: | |
593 | # w - The entry window in which the cursor is to move. | |
594 | # start - Position at which to start search. | |
595 | ||
596 | proc ::tk::EntryPreviousWord {w start} { | |
597 | set pos [tcl_startOfPreviousWord [$w get] [$w index $start]] | |
598 | if {$pos < 0} { | |
599 | return 0 | |
600 | } | |
601 | return $pos | |
602 | } | |
603 | ||
604 | # ::tk::EntryScanMark -- | |
605 | # | |
606 | # Marks the start of a possible scan drag operation | |
607 | # | |
608 | # Arguments: | |
609 | # w - The entry window from which the text to get | |
610 | # x - x location on screen | |
611 | ||
612 | proc ::tk::EntryScanMark {w x} { | |
613 | $w scan mark $x | |
614 | set ::tk::Priv(x) $x | |
615 | set ::tk::Priv(y) 0 ; # not used | |
616 | set ::tk::Priv(mouseMoved) 0 | |
617 | } | |
618 | ||
619 | # ::tk::EntryScanDrag -- | |
620 | # | |
621 | # Marks the start of a possible scan drag operation | |
622 | # | |
623 | # Arguments: | |
624 | # w - The entry window from which the text to get | |
625 | # x - x location on screen | |
626 | ||
627 | proc ::tk::EntryScanDrag {w x} { | |
628 | # Make sure these exist, as some weird situations can trigger the | |
629 | # motion binding without the initial press. [Bug #220269] | |
630 | if {![info exists ::tk::Priv(x)]} { set ::tk::Priv(x) $x } | |
631 | # allow for a delta | |
632 | if {abs($x-$::tk::Priv(x)) > 2} { | |
633 | set ::tk::Priv(mouseMoved) 1 | |
634 | } | |
635 | $w scan dragto $x | |
636 | } | |
637 | ||
638 | # ::tk::EntryGetSelection -- | |
639 | # | |
640 | # Returns the selected text of the entry with respect to the -show option. | |
641 | # | |
642 | # Arguments: | |
643 | # w - The entry window from which the text to get | |
644 | ||
645 | proc ::tk::EntryGetSelection {w} { | |
646 | set entryString [string range [$w get] [$w index sel.first] \ | |
647 | [expr {[$w index sel.last] - 1}]] | |
648 | if {[string compare [$w cget -show] ""]} { | |
649 | return [string repeat [string index [$w cget -show] 0] \ | |
650 | [string length $entryString]] | |
651 | } | |
652 | return $entryString | |
653 | } |