# $Id: balloon.tcl,v 1.6 2001/08/09 04:28:55 cgavin Exp $ # # balloon.tcl - procedures used by balloon help # # Copyright (C) 1996-1998 Stewart Allen # # 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.
#
bind _vTclBalloon <Enter> {
namespace eval ::vTcl::balloon {
## self defining balloon?
if {![info exists %W]} {
vTcl:FireEvent %W <<SetBalloon>>
}
set set 0
set first 1
set id [after 500 {vTcl:FireEvent %W <<vTclBalloon>>}]
}}
bind _vTclBalloon <Motion> {
namespace eval ::vTcl::balloon {
if {!$set} {
after cancel $id
set id [after 500 {vTcl:FireEvent %W <<vTclBalloon>>}]
}
}}
bind _vTclBalloon <Button> {
namespace eval ::vTcl::balloon {
set first 0
}
vTcl:FireEvent %W <<KillBalloon>>}
bind _vTclBalloon <Leave> {
namespace eval ::vTcl::balloon {
set first 0
}
vTcl:FireEvent %W <<KillBalloon>>}
bind _vTclBalloon <<KillBalloon>> {
namespace eval ::vTcl::balloon {
after cancel $id
if {[winfo exists .vTcl.balloon]} {
destroy .vTcl.balloon
}
set set 0
}}
bind _vTclBalloon <<vTclBalloon>> {
if {$::vTcl::balloon::first != 1} {break}
namespace eval ::vTcl::balloon {
set first 2
if {![winfo exists .vTcl]} {
toplevel .vTcl; wm withdraw .vTcl
}
if {![winfo exists .vTcl.balloon]} {
toplevel .vTcl.balloon -bg black
}
wm overrideredirect .vTcl.balloon 1
label .vTcl.balloon.l \
-text ${%W} -relief flat \
-bg #ffffaa -fg black -padx 2 -pady 0 -anchor w
pack .vTcl.balloon.l -side left -padx 1 -pady 1
wm geometry \
.vTcl.balloon \
+[expr {[winfo rootx %W]+[winfo width %W]/2}]+[expr {[winfo rooty %W]+[winfo height %W]+4}]
set set 1
}}
proc vTcl:set_balloon {target message} {
## Balloons disabled?
if {!$::vTcl(pr,balloon)} {return}
namespace eval ::vTcl::balloon "variable $target"
set ::vTcl::balloon::$target $message
## Add tag to the widget
bindtags $target "[bindtags $target] _vTclBalloon"}