neingeist
/
arduinisten
Archived
1
0
Fork 0
You cannot select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
This repo is archived. You can view files and clone it, but cannot push or open issues/pull-requests.

502 lines
18 KiB
Plaintext

#
# Scrolledtext
# ----------------------------------------------------------------------
# Implements a scrolled text widget with additional options to manage
# the vertical scrollbar. This includes options to control the method
# in which the scrollbar is displayed, i.e. statically or dynamically.
# Options also exist for adding a label to the scrolled text area and
# controlling its position. Import/export of methods are provided for
# file I/O.
#
# ----------------------------------------------------------------------
# AUTHOR: Mark L. Ulferts EMAIL: mulferts@austin.dsccc.com
#
# @(#) $Id: scrolledtext.itk,v 1.5 2002/09/10 03:05:25 smithc Exp $
# ----------------------------------------------------------------------
# Copyright (c) 1995 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 Scrolledtext {
keep -activebackground -activerelief -background -borderwidth -cursor \
-elementborderwidth -foreground -highlightcolor -highlightthickness \
-insertbackground -insertborderwidth -insertofftime -insertontime \
-insertwidth -jump -labelfont -selectbackground -selectborderwidth \
-selectforeground -textbackground -textfont -troughcolor
}
# ------------------------------------------------------------------
# SCROLLEDTEXT
# ------------------------------------------------------------------
itcl::class iwidgets::Scrolledtext {
inherit iwidgets::Scrolledwidget
constructor {args} {}
destructor {}
itk_option define -width width Width 0
itk_option define -height height Height 0
itk_option define -visibleitems visibleItems VisibleItems 80x24
public method bbox {index}
public method childsite {}
public method clear {}
public method import {filename {index end}}
public method export {filename}
public method compare {index1 op index2}
public method debug {args}
public method delete {first {last {}}}
public method dlineinfo {index}
public method get {index1 {index2 {}}}
public method image {option args}
public method index {index}
public method insert {args}
public method mark {option args}
public method scan {option args}
public method search {args}
public method see {index}
public method tag {option args}
public method window {option args}
public method xview {args}
public method yview {args}
}
#
# Provide a lowercased access method for the Scrolledtext class.
#
proc ::iwidgets::scrolledtext {pathName args} {
uplevel ::iwidgets::Scrolledtext $pathName $args
}
#
# Use option database to override default resources of base classes.
#
option add *Scrolledtext.labelPos n widgetDefault
# ------------------------------------------------------------------
# CONSTRUCTOR
# ------------------------------------------------------------------
itcl::body iwidgets::Scrolledtext::constructor {args} {
#
# Our -width and -height options are slightly different than
# those implemented by our base class, so we're going to
# remove them and redefine our own.
#
itk_option remove iwidgets::Scrolledwidget::width
itk_option remove iwidgets::Scrolledwidget::height
#
# Create a clipping frame which will provide the border for
# relief display.
#
itk_component add clipper {
frame $itk_interior.clipper
} {
usual
keep -borderwidth -relief -highlightthickness -highlightcolor
rename -highlightbackground -background background Background
}
grid $itk_component(clipper) -row 0 -column 0 -sticky nsew
grid rowconfigure $_interior 0 -weight 1
grid columnconfigure $_interior 0 -weight 1
#
# Create the text area.
#
itk_component add text {
text $itk_component(clipper).text \
-width 1 -height 1 \
-xscrollcommand \
[itcl::code $this _scrollWidget $itk_interior.horizsb] \
-yscrollcommand \
[itcl::code $this _scrollWidget $itk_interior.vertsb] \
-borderwidth 0 -highlightthickness 0
} {
usual
ignore -highlightthickness -highlightcolor -borderwidth
keep -exportselection -padx -pady -setgrid \
-spacing1 -spacing2 -spacing3 -state -tabs -wrap
rename -font -textfont textFont Font
rename -background -textbackground textBackground Background
}
grid $itk_component(text) -row 0 -column 0 -sticky nsew
grid rowconfigure $itk_component(clipper) 0 -weight 1
grid columnconfigure $itk_component(clipper) 0 -weight 1
#
# Configure the command on the vertical scroll bar in the base class.
#
$itk_component(vertsb) configure \
-command [itcl::code $itk_component(text) yview]
#
# Configure the command on the horizontal scroll bar in the base class.
#
$itk_component(horizsb) configure \
-command [itcl::code $itk_component(text) xview]
#
# Initialize the widget based on the command line options.
#
eval itk_initialize $args
}
# ------------------------------------------------------------------
# DESTURCTOR
# ------------------------------------------------------------------
itcl::body iwidgets::Scrolledtext::destructor {} {
}
# ------------------------------------------------------------------
# OPTIONS
# ------------------------------------------------------------------
# ------------------------------------------------------------------
# OPTION: -width
#
# Specifies the width of the scrolled text as an entire unit.
# The value may be specified in any of the forms acceptable to
# Tk_GetPixels. Any additional space needed to display the other
# components such as labels, margins, and scrollbars force the text
# to be compressed. A value of zero along with the same value for
# the height causes the value given for the visibleitems option
# to be applied which administers geometry constraints in a different
# manner.
# ------------------------------------------------------------------
itcl::configbody iwidgets::Scrolledtext::width {
if {$itk_option(-width) != 0} {
set shell [lindex [grid info $itk_component(clipper)] 1]
#
# 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 $shell]} {
grid propagate $shell no
}
$itk_component(text) configure -width 1
$shell configure \
-width [winfo pixels $shell $itk_option(-width)]
} else {
configure -visibleitems $itk_option(-visibleitems)
}
}
# ------------------------------------------------------------------
# OPTION: -height
#
# Specifies the height of the scrolled text as an entire unit.
# The value may be specified in any of the forms acceptable to
# Tk_GetPixels. Any additional space needed to display the other
# components such as labels, margins, and scrollbars force the text
# to be compressed. A value of zero along with the same value for
# the width causes the value given for the visibleitems option
# to be applied which administers geometry constraints in a different
# manner.
# ------------------------------------------------------------------
itcl::configbody iwidgets::Scrolledtext::height {
if {$itk_option(-height) != 0} {
set shell [lindex [grid info $itk_component(clipper)] 1]
#
# 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 $shell]} {
grid propagate $shell no
}
$itk_component(text) configure -height 1
$shell configure \
-height [winfo pixels $shell $itk_option(-height)]
} else {
configure -visibleitems $itk_option(-visibleitems)
}
}
# ------------------------------------------------------------------
# OPTION: -visibleitems
#
# Specified the widthxheight in characters and lines for the text.
# This option is only administered if the width and height options
# are both set to zero, otherwise they take precedence. With the
# visibleitems option engaged, geometry constraints are maintained
# only on the text. The size of the other components such as
# labels, margins, and scroll bars, are additive and independent,
# effecting the overall size of the scrolled text. In contrast,
# should the width and height options have non zero values, they
# are applied to the scrolled text as a whole. The text is
# compressed or expanded to maintain the geometry constraints.
# ------------------------------------------------------------------
itcl::configbody iwidgets::Scrolledtext::visibleitems {
if {[regexp {^[0-9]+x[0-9]+$} $itk_option(-visibleitems)]} {
if {($itk_option(-width) == 0) && \
($itk_option(-height) == 0)} {
set chars [lindex [split $itk_option(-visibleitems) x] 0]
set lines [lindex [split $itk_option(-visibleitems) x] 1]
set shell [lindex [grid info $itk_component(clipper)] 1]
#
# 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 $shell]} {
grid propagate $shell yes
}
$itk_component(text) configure -width $chars -height $lines
}
} else {
error "bad visibleitems option\
\"$itk_option(-visibleitems)\": should be\
widthxheight"
}
}
# ------------------------------------------------------------------
# METHODS
# ------------------------------------------------------------------
# ------------------------------------------------------------------
# METHOD: childsite
#
# Returns the path name of the child site widget.
# ------------------------------------------------------------------
itcl::body iwidgets::Scrolledtext::childsite {} {
return $itk_component(text)
}
# ------------------------------------------------------------------
# METHOD: bbox index
#
# Returns four element list describing the bounding box for the list
# item at index
# ------------------------------------------------------------------
itcl::body iwidgets::Scrolledtext::bbox {index} {
return [$itk_component(text) bbox $index]
}
# ------------------------------------------------------------------
# METHOD clear
#
# Clear the text area.
# ------------------------------------------------------------------
itcl::body iwidgets::Scrolledtext::clear {} {
$itk_component(text) delete 1.0 end
}
# ------------------------------------------------------------------
# METHOD import filename
#
# Load text from an existing file (import filename)
# ------------------------------------------------------------------
itcl::body iwidgets::Scrolledtext::import {filename {index end}} {
set f [open $filename r]
insert $index [read $f]
close $f
}
# ------------------------------------------------------------------
# METHOD export filename
#
# write text to a file (export filename)
# ------------------------------------------------------------------
itcl::body iwidgets::Scrolledtext::export {filename} {
set f [open $filename w]
set txt [$itk_component(text) get 1.0 end]
puts $f $txt
flush $f
close $f
}
# ------------------------------------------------------------------
# METHOD compare index1 op index2
#
# Compare indices according to relational operator.
# ------------------------------------------------------------------
itcl::body iwidgets::Scrolledtext::compare {index1 op index2} {
return [$itk_component(text) compare $index1 $op $index2]
}
# ------------------------------------------------------------------
# METHOD debug ?boolean?
#
# Activates consistency checks in B-tree code associated with text
# widgets.
# ------------------------------------------------------------------
itcl::body iwidgets::Scrolledtext::debug {args} {
eval $itk_component(text) debug $args
}
# ------------------------------------------------------------------
# METHOD delete first ?last?
#
# Delete a range of characters from the text.
# ------------------------------------------------------------------
itcl::body iwidgets::Scrolledtext::delete {first {last {}}} {
$itk_component(text) delete $first $last
}
# ------------------------------------------------------------------
# METHOD dlineinfo index
#
# Returns a five element list describing the area occupied by the
# display line containing index.
# ------------------------------------------------------------------
itcl::body iwidgets::Scrolledtext::dlineinfo {index} {
return [$itk_component(text) dlineinfo $index]
}
# ------------------------------------------------------------------
# METHOD get index1 ?index2?
#
# Return text from start index to end index.
# ------------------------------------------------------------------
itcl::body iwidgets::Scrolledtext::get {index1 {index2 {}}} {
return [$itk_component(text) get $index1 $index2]
}
# ------------------------------------------------------------------
# METHOD image option ?arg arg ...?
#
# Manipulate images dependent on options.
#
# ------------------------------------------------------------------
itcl::body iwidgets::Scrolledtext::image {option args} {
return [eval $itk_component(text) image $option $args]
}
# ------------------------------------------------------------------
# METHOD index index
#
# Return position corresponding to index.
# ------------------------------------------------------------------
itcl::body iwidgets::Scrolledtext::index {index} {
return [$itk_component(text) index $index]
}
# ------------------------------------------------------------------
# METHOD insert index chars ?tagList?
#
# Insert text at index.
# ------------------------------------------------------------------
itcl::body iwidgets::Scrolledtext::insert {args} {
eval $itk_component(text) insert $args
}
# ------------------------------------------------------------------
# METHOD mark option ?arg arg ...?
#
# Manipulate marks dependent on options.
# ------------------------------------------------------------------
itcl::body iwidgets::Scrolledtext::mark {option args} {
return [eval $itk_component(text) mark $option $args]
}
# ------------------------------------------------------------------
# METHOD scan option args
#
# Implements scanning on texts.
# ------------------------------------------------------------------
itcl::body iwidgets::Scrolledtext::scan {option args} {
eval $itk_component(text) scan $option $args
}
# ------------------------------------------------------------------
# METHOD search ?switches? pattern index ?varName?
#
# Searches the text for characters matching a pattern.
# ------------------------------------------------------------------
itcl::body iwidgets::Scrolledtext::search {args} {
#-----------------------------------------------------------
# BUG FIX: csmith (Chad Smith: csmith@adc.com), 11/18/99
#-----------------------------------------------------------
# Need to run this command up one level on the stack since
# the text widget may modify one of the arguments, which is
# the case when -count is specified.
#-----------------------------------------------------------
return [uplevel eval $itk_component(text) search $args]
}
# ------------------------------------------------------------------
# METHOD see index
#
# Adjusts the view in the window so the character at index is
# visible.
# ------------------------------------------------------------------
itcl::body iwidgets::Scrolledtext::see {index} {
$itk_component(text) see $index
}
# ------------------------------------------------------------------
# METHOD tag option ?arg arg ...?
#
# Manipulate tags dependent on options.
# ------------------------------------------------------------------
itcl::body iwidgets::Scrolledtext::tag {option args} {
return [eval $itk_component(text) tag $option $args]
}
# ------------------------------------------------------------------
# METHOD window option ?arg arg ...?
#
# Manipulate embedded windows.
# ------------------------------------------------------------------
itcl::body iwidgets::Scrolledtext::window {option args} {
return [eval $itk_component(text) window $option $args]
}
# ------------------------------------------------------------------
# METHOD xview
#
# Changes x view in widget's window.
# ------------------------------------------------------------------
itcl::body iwidgets::Scrolledtext::xview {args} {
return [eval $itk_component(text) xview $args]
}
# ------------------------------------------------------------------
# METHOD yview
#
# Changes y view in widget's window.
# ------------------------------------------------------------------
itcl::body iwidgets::Scrolledtext::yview {args} {
return [eval $itk_component(text) yview $args]
}