1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
|
# Copyright (C) 1987-2007 by Jeffery P. Hansen
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#
# Last edit by hansen on Tue Feb 24 14:06:55 2004
#
#############################################################################
#
# Drag-and-drop functions
#
namespace eval Dragger {
variable drag_w
variable W
variable H
variable command
variable absolute
variable grabpoint
proc setGeometry {X Y} {
variable drag_w
variable W
variable H
variable grabpoint
if { [llength $grabpoint] < 2 } {
wm geometry $drag_w +[expr ${X} - $W/2]+[expr ${Y} - 3*$H/4]
} else {
set dx [lindex $grabpoint 0]
set dy [lindex $grabpoint 1]
wm geometry $drag_w +[expr ${X} - $dx]+[expr ${Y} - $dy]
}
}
proc windowConfigure {} {
variable drag_w
variable W
variable H
scan [winfo pointerxy .] "%d %d" X Y
set W [winfo width $drag_w]
set H [winfo height $drag_w]
updatePosition $X $Y
}
proc updatePosition {X Y} {
setGeometry $X $Y
}
proc drop {w x y} {
variable command
variable absolute
destroy $w
if { $command != "" } {
update
set w [winfo containing $x $y]
if { $w == "" } {
eval "$command \"\" $x $y"
} else {
if { ! $absolute } {
set x [expr $x - [winfo rootx $w]]
set y [expr $y - [winfo rooty $w]]
}
eval "$command $w $x $y"
}
}
}
proc make {args} {
variable drag_w
variable W
variable H
variable command
variable absolute
variable grabpoint
set command ""
set absolute 0
set grabpoint 0
parseargs $args {-command -absolute -grabpoint}
set W 10
set H 10
set drag_w .dragger
set w $drag_w
if {[catch { toplevel $w -cursor arrow } xx]} {
return ""
}
scan [winfo pointerxy .] "%d %d" X Y
setGeometry $X $Y
wm overrideredirect $w 1
bind $w <ButtonRelease-1> "Dragger::drop $w %X %Y"
bind $w <B1-Motion> { Dragger::updatePosition %X %Y}
bind $w <Configure> { Dragger::windowConfigure }
update
if {[catch { grab -global $w } xx]} {
destroy $w
return ""
}
return $w
}
}
|
