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[/] [or1k/] [trunk/] [insight/] [itcl/] [iwidgets3.0.0/] [generic/] [scrolledwidget.itk] - Blame information for rev 1780

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#
# Scrolledwidget
# ----------------------------------------------------------------------
# Implements a general purpose base class for scrolled widgets, by
# creating the necessary horizontal and vertical scrollbars and
# providing protected methods for controlling their display.  The
# derived class needs to take advantage of the fact that the grid
# is used and the vertical scrollbar is in row 0, column 2 and the
# horizontal scrollbar in row 2, column 0.
#
# ----------------------------------------------------------------------
#  AUTHOR: Mark Ulferts                        mulferts@austin.dsccc.com
#
#  @(#) $Id: scrolledwidget.itk,v 1.1.1.1 2002-01-16 10:24:50 markom Exp $
# ----------------------------------------------------------------------
#            Copyright (c) 1997 DSC Technologies Corporation
# ======================================================================
# Permission to use, copy, modify, distribute and license this software
# and its documentation for any purpose, and without fee or written
# agreement with DSC, is hereby granted, provided that the above copyright
# notice appears in all copies and that both the copyright notice and
# warranty disclaimer below appear in supporting documentation, and that
# the names of DSC Technologies Corporation or DSC Communications
# Corporation not be used in advertising or publicity pertaining to the
# software without specific, written prior permission.
#
# DSC DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
# ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, AND NON-
# INFRINGEMENT. THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, AND THE
# AUTHORS AND DISTRIBUTORS HAVE NO OBLIGATION TO PROVIDE MAINTENANCE,
# SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. IN NO EVENT SHALL
# DSC BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
# ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
# WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTUOUS ACTION,
# ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
# SOFTWARE.
# ======================================================================
 
#
# Usual options.
#
itk::usual Scrolledwidget {
    keep -background -borderwidth -cursor -highlightcolor -highlightthickness
    keep -activebackground -activerelief -jump -troughcolor
    keep -labelfont -foreground
}
 
# ------------------------------------------------------------------
#                            SCROLLEDWIDGET
# ------------------------------------------------------------------
class iwidgets::Scrolledwidget {
    inherit iwidgets::Labeledframe
 
    constructor {args} {}
    destructor {}
    method childsite {}
 
    itk_option define -childsitepos childSitePos Position e
    itk_option define -sbwidth sbWidth Width ""
    itk_option define -scrollmargin scrollMargin ScrollMargin 3
    itk_option define -vscrollmode vscrollMode VScrollMode static
    itk_option define -hscrollmode hscrollMode HScrollMode static
    itk_option define -width width Width 30
    itk_option define -height height Height 30
 
   protected {
     method _scrollWidget {wid first last}
     method _vertScrollbarDisplay {mode}
     method _horizScrollbarDisplay {mode}
     method _configureEvent {}
 
     variable _vmode off            ;# Vertical scroll mode
     variable _hmode off            ;# Vertical scroll mode
     variable _recheckHoriz 1       ;# Flag to check need for
                                    ;#  horizontal scrollbar
     variable _recheckVert 1        ;# Flag to check need for
                                    ;#  vertical scrollbar
 
     variable _interior {}
   }
}
 
#
# Provide a lowercased access method for the Scrolledwidget class.
#
proc ::iwidgets::scrolledwidget {pathName args} {
    uplevel ::iwidgets::Scrolledwidget $pathName $args
}
 
#
# Use option database to override default resources of base classes.
#
option add *Scrolledwidget.labelPos n widgetDefault
 
# ------------------------------------------------------------------
#                        CONSTRUCTOR
# ------------------------------------------------------------------
body iwidgets::Scrolledwidget::constructor {args} {
 
    #
    # Turn off the borderwidth on the hull and save off the
    # interior for later use.
    #
    component hull configure -borderwidth 0
    set _interior [iwidgets::Labeledframe::childsite]
    set itk_interior $_interior
 
    #
    # Check if the scrollbars need mapping upon a configure event.
    #
    bind $_interior  [code $this _configureEvent]
 
    #
    # Turn off propagation in the containing shell.
    #
    # Due to a bug in the tk4.2 grid, we have to check the
    # propagation before setting it.  Setting it to the same
    # value it already is will cause it to toggle.
    #
    if {[grid propagate $_interior]} {
        grid propagate $_interior no
    }
 
    #
    # Create the vertical scroll bar
    #
    itk_component add vertsb {
        scrollbar $_interior.vertsb -orient vertical
    } {
        usual
        keep -elementborderwidth -jump
        rename -highlightbackground -background background Background
    }
 
    #
    # Create the horizontal scrollbar
    #
    itk_component add horizsb {
        scrollbar $_interior.horizsb -orient horizontal
    } {
        usual
        keep -elementborderwidth -jump
        rename -highlightbackground -background background Background
    }
 
    #
    # Create the childsite frame
    #
    itk_component add swchildsite {
      frame $_interior.cs
    }
 
    #
    # Initialize the widget based on the command line options.
    #
    eval itk_initialize $args
}
 
# ------------------------------------------------------------------
#                           DESTURCTOR
# ------------------------------------------------------------------
body iwidgets::Scrolledwidget::destructor {} {
}
 
# ------------------------------------------------------------------
#                             OPTIONS
# ------------------------------------------------------------------
 
# ------------------------------------------------------------------
# OPTION: -sbwidth
#
# Set the width of the scrollbars.
# ------------------------------------------------------------------
configbody iwidgets::Scrolledwidget::sbwidth {
   if {$itk_option(-sbwidth) != ""} {
        $itk_component(vertsb) configure -width $itk_option(-sbwidth)
        $itk_component(horizsb) configure -width $itk_option(-sbwidth)
   }
}
 
# ------------------------------------------------------------------
# OPTION: -scrollmargin
#
# Set the distance between the scrollbars and the list box.
# ------------------------------------------------------------------
configbody iwidgets::Scrolledwidget::scrollmargin {
    set pixels [winfo pixels $_interior $itk_option(-scrollmargin)]
 
    if {$_hmode == "on"} {
        grid rowconfigure $_interior 2 -minsize $pixels
    }
 
    if {$_vmode == "on"} {
        grid columnconfigure $_interior 2 -minsize $pixels
    }
}
 
# ------------------------------------------------------------------
# OPTION: -vscrollmode
#
# Enable/disable display and mode of veritcal scrollbars.
# ------------------------------------------------------------------
configbody iwidgets::Scrolledwidget::vscrollmode {
    switch $itk_option(-vscrollmode) {
        static {
            _vertScrollbarDisplay on
        }
 
        dynamic -
        none {
            _vertScrollbarDisplay off
        }
 
        default {
            error "bad vscrollmode option\
                    \"$itk_option(-vscrollmode)\": should be\
                    static, dynamic, or none"
        }
    }
}
 
# ------------------------------------------------------------------
# OPTION: -hscrollmode
#
# Enable/disable display and mode of horizontal scrollbars.
# ------------------------------------------------------------------
configbody iwidgets::Scrolledwidget::hscrollmode {
    switch $itk_option(-hscrollmode) {
        static {
            _horizScrollbarDisplay on
        }
 
        dynamic -
        none {
            _horizScrollbarDisplay off
        }
 
        default {
            error "bad hscrollmode option\
                    \"$itk_option(-hscrollmode)\": should be\
                    static, dynamic, or none"
        }
    }
}
 
# ------------------------------------------------------------------
# OPTION: -width
#
# Specifies the width of the scrolled widget.  The value may be
# specified in any of the forms acceptable to Tk_GetPixels.
# ------------------------------------------------------------------
configbody iwidgets::Scrolledwidget::width {
    $_interior configure -width \
        [winfo pixels $_interior $itk_option(-width)]
}
 
# ------------------------------------------------------------------
# OPTION: -height
#
# Specifies the height of the scrolled widget.  The value may be
# specified in any of the forms acceptable to Tk_GetPixels.
# ------------------------------------------------------------------
configbody iwidgets::Scrolledwidget::height {
    $_interior configure -height \
        [winfo pixels $_interior $itk_option(-height)]
}
 
# ------------------------------------------------------------------
# OPTION: -childsitepos
#
# Specifies the position of the child site in the widget.
# ------------------------------------------------------------------
configbody iwidgets::Scrolledwidget::childsitepos {
 
    # First reset all the other child sites to weight 0 so
    # they do not take any of the space...
 
    switch $itk_option(-childsitepos) {
        n {
            grid $itk_component(swchildsite) -row 0 -column 1 -columnspan 3 -sticky nsew
        }
 
        s {
            grid $itk_component(swchildsite) -row 4 -column 1 -columnspan 3 -sticky nsew
        }
 
        e {
            grid $itk_component(swchildsite) -row 1 -column 4 -rowspan 3 -sticky nsew
        }
 
        w {
            grid $itk_component(swchildsite) -row 1 -column 0 -rowspan 3 -sticky nsew
        }
 
        default {
            error "bad childsite option\
                    \"$itk_option(-childsitepos)\":\
                    should be n, e, s, or w"
        }
    }
}
 
# ------------------------------------------------------------------
#                            METHODS
# ------------------------------------------------------------------
 
# ------------------------------------------------------------------
# METHOD: childsite
#
# Returns the path name of the child site widget.
# ------------------------------------------------------------------
body iwidgets::Scrolledwidget::childsite {} {
    return $itk_component(swchildsite)
}
 
# ------------------------------------------------------------------
# PROTECTED METHOD: _vertScrollbarDisplay mode
#
# Displays the vertical scrollbar based on the input mode.
# ------------------------------------------------------------------
body iwidgets::Scrolledwidget::_vertScrollbarDisplay {mode} {
    switch $mode  {
        on {
            set _vmode on
 
            grid columnconfigure $_interior 2 -minsize \
                    [winfo pixels $_interior $itk_option(-scrollmargin)]
            grid $itk_component(vertsb) -row 1 -column 3 -sticky ns
        }
 
        off {
            set _vmode off
 
            grid columnconfigure $_interior 2 -minsize 0
            grid forget $itk_component(vertsb)
        }
 
        default {
            error "invalid argument \"$mode\": should be on or off"
        }
    }
}
 
# ------------------------------------------------------------------
# PROTECTED METHOD: _horizScrollbarDisplay mode
#
# Displays the horizontal scrollbar based on the input mode.
# ------------------------------------------------------------------
body iwidgets::Scrolledwidget::_horizScrollbarDisplay {mode} {
    switch $mode  {
        on {
            set _hmode on
 
            grid rowconfigure $_interior 2 -minsize \
                    [winfo pixels $_interior $itk_option(-scrollmargin)]
            grid $itk_component(horizsb) -row 3 -column 1 -sticky ew
        }
 
        off {
            set _hmode off
 
            grid rowconfigure $_interior 2 -minsize 0
            grid forget $itk_component(horizsb)
        }
 
        default {
            error "invalid argument \"$mode\": should be on or off"
        }
    }
}
 
# ------------------------------------------------------------------
# PROTECTED METHOD: _scrollWidget wid first last
#
# Performs scrolling and display of scrollbars based on the total
# and maximum frame size as well as the current -vscrollmode and
# -hscrollmode settings.  Parameters are automatic scroll parameters.
# ------------------------------------------------------------------
body iwidgets::Scrolledwidget::_scrollWidget {wid first last} {
    $wid set $first $last
 
    if {$wid == $itk_component(vertsb)} {
        if {$itk_option(-vscrollmode) == "dynamic"} {
            if {($_recheckVert != 1) && ($_vmode == "on")} {
                return
            } else {
                set _recheckVert 0
            }
 
            if {($first == 0) && ($last == 1)} {
                if {$_vmode != "off"} {
                    _vertScrollbarDisplay off
                }
 
            } else {
                if {$_vmode != "on"} {
                    _vertScrollbarDisplay on
                }
            }
        }
 
    } elseif {$wid == $itk_component(horizsb)} {
        if {$itk_option(-hscrollmode) == "dynamic"} {
            if {($_recheckHoriz != 1) && ($_hmode == "on")} {
                return
            } else {
                set _recheckHoriz 0
            }
 
            if {($first == 0) && ($last == 1)} {
                if {$_hmode != "off"} {
                    _horizScrollbarDisplay off
                }
 
            } else {
                if {$_hmode != "on"} {
                    _horizScrollbarDisplay on
                }
            }
        }
    }
}
 
# ------------------------------------------------------------------
# PROTECTED METHOD: _configureEvent
#
# Resets the recheck flags which determine if we'll try and map
# the scrollbars in dynamic mode.
# ------------------------------------------------------------------
body iwidgets::Scrolledwidget::_configureEvent {} {
    update idletasks
    set _recheckVert 1
    set _recheckHoriz 1
}

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[/] [or1k/] [trunk/] [insight/] [itcl/] [iwidgets3.0.0/] [generic/] [scrolledwidget.itk] - Blame information for rev 1780

Line No.	Rev	Author	Line
1	578	markom	`#`
2			`# Scrolledwidget`
3			`# ----------------------------------------------------------------------`
4			`# Implements a general purpose base class for scrolled widgets, by`
5			`# creating the necessary horizontal and vertical scrollbars and`
6			`# providing protected methods for controlling their display. The`
7			`# derived class needs to take advantage of the fact that the grid`
8			`# is used and the vertical scrollbar is in row 0, column 2 and the`
9			`# horizontal scrollbar in row 2, column 0.`
10			`#`
11			`# ----------------------------------------------------------------------`
12			`# AUTHOR: Mark Ulferts mulferts@austin.dsccc.com`
13			`#`
14			`# @(#) $Id: scrolledwidget.itk,v 1.1.1.1 2002-01-16 10:24:50 markom Exp $`
15			`# ----------------------------------------------------------------------`
16			`# Copyright (c) 1997 DSC Technologies Corporation`
17			`# ======================================================================`
18			`# Permission to use, copy, modify, distribute and license this software`
19			`# and its documentation for any purpose, and without fee or written`
20			`# agreement with DSC, is hereby granted, provided that the above copyright`
21			`# notice appears in all copies and that both the copyright notice and`
22			`# warranty disclaimer below appear in supporting documentation, and that`
23			`# the names of DSC Technologies Corporation or DSC Communications`
24			`# Corporation not be used in advertising or publicity pertaining to the`
25			`# software without specific, written prior permission.`
26			`#`
27			`# DSC DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING`
28			`# ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, AND NON-`
29			`# INFRINGEMENT. THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, AND THE`
30			`# AUTHORS AND DISTRIBUTORS HAVE NO OBLIGATION TO PROVIDE MAINTENANCE,`
31			`# SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. IN NO EVENT SHALL`
32			`# DSC BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR`
33			`# ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,`
34			`# WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTUOUS ACTION,`
35			`# ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS`
36			`# SOFTWARE.`
37			`# ======================================================================`
38
39			`#`
40			`# Usual options.`
41			`#`
42			`itk::usual Scrolledwidget {`
43			`keep -background -borderwidth -cursor -highlightcolor -highlightthickness`
44			`keep -activebackground -activerelief -jump -troughcolor`
45			`keep -labelfont -foreground`
46			`}`
47
48			`# ------------------------------------------------------------------`
49			`# SCROLLEDWIDGET`
50			`# ------------------------------------------------------------------`
51			`class iwidgets::Scrolledwidget {`
52			`inherit iwidgets::Labeledframe`
53
54			`constructor {args} {}`
55			`destructor {}`
56			`method childsite {}`
57
58			`itk_option define -childsitepos childSitePos Position e`
59			`itk_option define -sbwidth sbWidth Width ""`
60			`itk_option define -scrollmargin scrollMargin ScrollMargin 3`
61			`itk_option define -vscrollmode vscrollMode VScrollMode static`
62			`itk_option define -hscrollmode hscrollMode HScrollMode static`
63			`itk_option define -width width Width 30`
64			`itk_option define -height height Height 30`
65
66			`protected {`
67			`method _scrollWidget {wid first last}`
68			`method _vertScrollbarDisplay {mode}`
69			`method _horizScrollbarDisplay {mode}`
70			`method _configureEvent {}`
71
72			`variable _vmode off ;# Vertical scroll mode`
73			`variable _hmode off ;# Vertical scroll mode`
74			`variable _recheckHoriz 1 ;# Flag to check need for`
75			`;# horizontal scrollbar`
76			`variable _recheckVert 1 ;# Flag to check need for`
77			`;# vertical scrollbar`
78
79			`variable _interior {}`
80			`}`
81			`}`
82
83			`#`
84			`# Provide a lowercased access method for the Scrolledwidget class.`
85			`#`
86			`proc ::iwidgets::scrolledwidget {pathName args} {`
87			`uplevel ::iwidgets::Scrolledwidget $pathName $args`
88			`}`
89
90			`#`
91			`# Use option database to override default resources of base classes.`
92			`#`
93			`option add *Scrolledwidget.labelPos n widgetDefault`
94
95			`# ------------------------------------------------------------------`
96			`# CONSTRUCTOR`
97			`# ------------------------------------------------------------------`
98			`body iwidgets::Scrolledwidget::constructor {args} {`
99
100			`#`
101			`# Turn off the borderwidth on the hull and save off the`
102			`# interior for later use.`
103			`#`
104			`component hull configure -borderwidth 0`
105			`set _interior [iwidgets::Labeledframe::childsite]`
106			`set itk_interior $_interior`
107
108			`#`
109			`# Check if the scrollbars need mapping upon a configure event.`
110			`#`
111			`bind $_interior [code $this _configureEvent]`
112
113			`#`
114			`# Turn off propagation in the containing shell.`
115			`#`
116			`# Due to a bug in the tk4.2 grid, we have to check the`
117			`# propagation before setting it. Setting it to the same`
118			`# value it already is will cause it to toggle.`
119			`#`
120			`if {[grid propagate $_interior]} {`
121			`grid propagate $_interior no`
122			`}`
123
124			`#`
125			`# Create the vertical scroll bar`
126			`#`
127			`itk_component add vertsb {`
128			`scrollbar $_interior.vertsb -orient vertical`
129			`} {`
130			`usual`
131			`keep -elementborderwidth -jump`
132			`rename -highlightbackground -background background Background`
133			`}`
134
135			`#`
136			`# Create the horizontal scrollbar`
137			`#`
138			`itk_component add horizsb {`
139			`scrollbar $_interior.horizsb -orient horizontal`
140			`} {`
141			`usual`
142			`keep -elementborderwidth -jump`
143			`rename -highlightbackground -background background Background`
144			`}`
145
146			`#`
147			`# Create the childsite frame`
148			`#`
149			`itk_component add swchildsite {`
150			`frame $_interior.cs`
151			`}`
152
153			`#`
154			`# Initialize the widget based on the command line options.`
155			`#`
156			`eval itk_initialize $args`
157			`}`
158
159			`# ------------------------------------------------------------------`
160			`# DESTURCTOR`
161			`# ------------------------------------------------------------------`
162			`body iwidgets::Scrolledwidget::destructor {} {`
163			`}`
164
165			`# ------------------------------------------------------------------`
166			`# OPTIONS`
167			`# ------------------------------------------------------------------`
168
169			`# ------------------------------------------------------------------`
170			`# OPTION: -sbwidth`
171			`#`
172			`# Set the width of the scrollbars.`
173			`# ------------------------------------------------------------------`
174			`configbody iwidgets::Scrolledwidget::sbwidth {`
175			`if {$itk_option(-sbwidth) != ""} {`
176			`$itk_component(vertsb) configure -width $itk_option(-sbwidth)`
177			`$itk_component(horizsb) configure -width $itk_option(-sbwidth)`
178			`}`
179			`}`
180
181			`# ------------------------------------------------------------------`
182			`# OPTION: -scrollmargin`
183			`#`
184			`# Set the distance between the scrollbars and the list box.`
185			`# ------------------------------------------------------------------`
186			`configbody iwidgets::Scrolledwidget::scrollmargin {`
187			`set pixels [winfo pixels $_interior $itk_option(-scrollmargin)]`
188
189			`if {$_hmode == "on"} {`
190			`grid rowconfigure $_interior 2 -minsize $pixels`
191			`}`
192
193			`if {$_vmode == "on"} {`
194			`grid columnconfigure $_interior 2 -minsize $pixels`
195			`}`
196			`}`
197
198			`# ------------------------------------------------------------------`
199			`# OPTION: -vscrollmode`
200			`#`
201			`# Enable/disable display and mode of veritcal scrollbars.`
202			`# ------------------------------------------------------------------`
203			`configbody iwidgets::Scrolledwidget::vscrollmode {`
204			`switch $itk_option(-vscrollmode) {`
205			`static {`
206			`_vertScrollbarDisplay on`
207			`}`
208
209			`dynamic -`
210			`none {`
211			`_vertScrollbarDisplay off`
212			`}`
213
214			`default {`
215			`error "bad vscrollmode option\`
216			`\"$itk_option(-vscrollmode)\": should be\`
217			`static, dynamic, or none"`
218			`}`
219			`}`
220			`}`
221
222			`# ------------------------------------------------------------------`
223			`# OPTION: -hscrollmode`
224			`#`
225			`# Enable/disable display and mode of horizontal scrollbars.`
226			`# ------------------------------------------------------------------`
227			`configbody iwidgets::Scrolledwidget::hscrollmode {`
228			`switch $itk_option(-hscrollmode) {`
229			`static {`
230			`_horizScrollbarDisplay on`
231			`}`
232
233			`dynamic -`
234			`none {`
235			`_horizScrollbarDisplay off`
236			`}`
237
238			`default {`
239			`error "bad hscrollmode option\`
240			`\"$itk_option(-hscrollmode)\": should be\`
241			`static, dynamic, or none"`
242			`}`
243			`}`
244			`}`
245
246			`# ------------------------------------------------------------------`
247			`# OPTION: -width`
248			`#`
249			`# Specifies the width of the scrolled widget. The value may be`
250			`# specified in any of the forms acceptable to Tk_GetPixels.`
251			`# ------------------------------------------------------------------`
252			`configbody iwidgets::Scrolledwidget::width {`
253			`$_interior configure -width \`
254			`[winfo pixels $_interior $itk_option(-width)]`
255			`}`
256
257			`# ------------------------------------------------------------------`
258			`# OPTION: -height`
259			`#`
260			`# Specifies the height of the scrolled widget. The value may be`
261			`# specified in any of the forms acceptable to Tk_GetPixels.`
262			`# ------------------------------------------------------------------`
263			`configbody iwidgets::Scrolledwidget::height {`
264			`$_interior configure -height \`
265			`[winfo pixels $_interior $itk_option(-height)]`
266			`}`
267
268			`# ------------------------------------------------------------------`
269			`# OPTION: -childsitepos`
270			`#`
271			`# Specifies the position of the child site in the widget.`
272			`# ------------------------------------------------------------------`
273			`configbody iwidgets::Scrolledwidget::childsitepos {`
274
275			`# First reset all the other child sites to weight 0 so`
276			`# they do not take any of the space...`
277
278			`switch $itk_option(-childsitepos) {`
279			`n {`
280			`grid $itk_component(swchildsite) -row 0 -column 1 -columnspan 3 -sticky nsew`
281			`}`
282
283			`s {`
284			`grid $itk_component(swchildsite) -row 4 -column 1 -columnspan 3 -sticky nsew`
285			`}`
286
287			`e {`
288			`grid $itk_component(swchildsite) -row 1 -column 4 -rowspan 3 -sticky nsew`
289			`}`
290
291			`w {`
292			`grid $itk_component(swchildsite) -row 1 -column 0 -rowspan 3 -sticky nsew`
293			`}`
294
295			`default {`
296			`error "bad childsite option\`
297			`\"$itk_option(-childsitepos)\":\`
298			`should be n, e, s, or w"`
299			`}`
300			`}`
301			`}`
302
303			`# ------------------------------------------------------------------`
304			`# METHODS`
305			`# ------------------------------------------------------------------`
306
307			`# ------------------------------------------------------------------`
308			`# METHOD: childsite`
309			`#`
310			`# Returns the path name of the child site widget.`
311			`# ------------------------------------------------------------------`
312			`body iwidgets::Scrolledwidget::childsite {} {`
313			`return $itk_component(swchildsite)`
314			`}`
315
316			`# ------------------------------------------------------------------`
317			`# PROTECTED METHOD: _vertScrollbarDisplay mode`
318			`#`
319			`# Displays the vertical scrollbar based on the input mode.`
320			`# ------------------------------------------------------------------`
321			`body iwidgets::Scrolledwidget::_vertScrollbarDisplay {mode} {`
322			`switch $mode {`
323			`on {`
324			`set _vmode on`
325
326			`grid columnconfigure $_interior 2 -minsize \`
327			`[winfo pixels $_interior $itk_option(-scrollmargin)]`
328			`grid $itk_component(vertsb) -row 1 -column 3 -sticky ns`
329			`}`
330
331			`off {`
332			`set _vmode off`
333
334			`grid columnconfigure $_interior 2 -minsize 0`
335			`grid forget $itk_component(vertsb)`
336			`}`
337
338			`default {`
339			`error "invalid argument \"$mode\": should be on or off"`
340			`}`
341			`}`
342			`}`
343
344			`# ------------------------------------------------------------------`
345			`# PROTECTED METHOD: _horizScrollbarDisplay mode`
346			`#`
347			`# Displays the horizontal scrollbar based on the input mode.`
348			`# ------------------------------------------------------------------`
349			`body iwidgets::Scrolledwidget::_horizScrollbarDisplay {mode} {`
350			`switch $mode {`
351			`on {`
352			`set _hmode on`
353
354			`grid rowconfigure $_interior 2 -minsize \`
355			`[winfo pixels $_interior $itk_option(-scrollmargin)]`
356			`grid $itk_component(horizsb) -row 3 -column 1 -sticky ew`
357			`}`
358
359			`off {`
360			`set _hmode off`
361
362			`grid rowconfigure $_interior 2 -minsize 0`
363			`grid forget $itk_component(horizsb)`
364			`}`
365
366			`default {`
367			`error "invalid argument \"$mode\": should be on or off"`
368			`}`
369			`}`
370			`}`
371
372			`# ------------------------------------------------------------------`
373			`# PROTECTED METHOD: _scrollWidget wid first last`
374			`#`
375			`# Performs scrolling and display of scrollbars based on the total`
376			`# and maximum frame size as well as the current -vscrollmode and`
377			`# -hscrollmode settings. Parameters are automatic scroll parameters.`
378			`# ------------------------------------------------------------------`
379			`body iwidgets::Scrolledwidget::_scrollWidget {wid first last} {`
380			`$wid set $first $last`
381
382			`if {$wid == $itk_component(vertsb)} {`
383			`if {$itk_option(-vscrollmode) == "dynamic"} {`
384			`if {($_recheckVert != 1) && ($_vmode == "on")} {`
385			`return`
386			`} else {`
387			`set _recheckVert 0`
388			`}`
389
390			`if {($first == 0) && ($last == 1)} {`
391			`if {$_vmode != "off"} {`
392			`_vertScrollbarDisplay off`
393			`}`
394
395			`} else {`
396			`if {$_vmode != "on"} {`
397			`_vertScrollbarDisplay on`
398			`}`
399			`}`
400			`}`
401
402			`} elseif {$wid == $itk_component(horizsb)} {`
403			`if {$itk_option(-hscrollmode) == "dynamic"} {`
404			`if {($_recheckHoriz != 1) && ($_hmode == "on")} {`
405			`return`
406			`} else {`
407			`set _recheckHoriz 0`
408			`}`
409
410			`if {($first == 0) && ($last == 1)} {`
411			`if {$_hmode != "off"} {`
412			`_horizScrollbarDisplay off`
413			`}`
414
415			`} else {`
416			`if {$_hmode != "on"} {`
417			`_horizScrollbarDisplay on`
418			`}`
419			`}`
420			`}`
421			`}`
422			`}`
423
424			`# ------------------------------------------------------------------`
425			`# PROTECTED METHOD: _configureEvent`
426			`#`
427			`# Resets the recheck flags which determine if we'll try and map`
428			`# the scrollbars in dynamic mode.`
429			`# ------------------------------------------------------------------`
430			`body iwidgets::Scrolledwidget::_configureEvent {} {`
431			`update idletasks`
432			`set _recheckVert 1`
433			`set _recheckHoriz 1`
434			`}`