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NEWS
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Changes from 2.4y to 2.4z
FEATURES
========
graph/stripchart/barchart
Under Windows, both the "print1" and "print2" operations will
pop-up a standard printer dialog when you don't pass a printer
argument.
graph/stripchart/barchart
New -state option for both elements and markers. If "disabled",
marker or element isn't eligible for binding events. This is
useful when you have lots (>100,000) of data points.
graph/stripchart/barchart
New axis option -titlealternate lets you place the axis title to
the top or right of the axis. This used to automatically happen when
you had more than one axis in a margin. This option lets you control
it.
tree
Both "find" and "apply" operations may be given more than one
pattern switch (-exact, -glob, or -regexp). This performs a
logical "or"--if any one of the pattern matches, the node is
a match.
tree
Both "find" and "apply" operations now have addition switches
-keyexact, -keyglob, and -keyregexp (the -key switch works like
-keyexact). You may supply more than one switch. This performs
a logical "or"--if any one of the pattern matches, the node is a
match.
graph/stripchart/barchart
New axis options -scrollmin and -scrollmax allow you to specify
the scroll region. Thanks to both Meaghan Parizeau
<[email protected]> and Julian H J
Loaring <[email protected]> for the solution.
graph/stripchart/barchart
Polygon marker will trigger bindings even if the marker is not
filled (-fill "") or has no outline (-linewidth 0). Interior
is always considered part of the polygon.
tree
Tree adaptively restructures data values from a linked list into a
hash table when the number of values exceeds 20.
configure.in
Can build BLT with cygwin (gcc under Windows) distribution. Type
./configure and make to build. Use -disable-cygwin switch to build
"mingw" version. Many thanks to Mumit Khan <[email protected]>
for all the hard work of porting the configure.in and Makefiles.
BUG FIXES
=========
eps
Canvas item errors out with "can't get handle to EPS file" message.
Thanks to Shamil Daghestani <[email protected]> for the bug report.
graph/stripchart/barchart
Image marker doesn't get scaled correctly when scaling factor is
large. Thanks to Paul Kienzle <[email protected]>
for the bug report and example script. It really helped.
vector
"min" and "max" initially don't report the correct value. Many
thanks to Alexander Eisenhuth <[email protected]> for the
bug report.
treeview/tree
"show -full $key" operation doesn't work.
graph/stripchart/barchart
Doesn't display trailing data points when there are more than
65331 points. Thanks to Val Shkolnikov <[email protected]>
for the bug report.
vector
Vectors leak memory when accessing them through the Tcl array
variable. Thanks to Alexander Eisenhuth <[email protected]>
for the bug report and especially the test script to demonstrate
the problem.
treeview/tree
In "apply" operation, -regexp, -exact, or -glob switches don't
work. Always matches every node.
graph/stripchart/barchart
Axis "-hide" option no longer accepts "all" value. "all" was
supposed to hide the axis *and* all the elements mapped to it.
I don't think this option ever worked correctly. It was also
unclear whether to hide the legend entry, markers, etc.
graph/stripchart/barchart
Changing a marker's -hide option doesn't take effect until the
graph is redrawn. Thanks to Alex Verstak <[email protected]> for
the bug report.
graph/stripchart/barchart
Spurious characters in PostScript output generated under Windows.
Thanks to Cary D. Renzema <[email protected]> for the bug
report and sample files.
graph/stripchart/barchart
"snap" operation core dumps or returns X protocol error depending
on arguments. Thanks to Carsten Mortensen <[email protected]> for
both the bug report and the fix.
graph/stripchart/barchart
Polygon marker not drawn unless no outline is specified (-linewith 0).
Thanks to Nestor Patino <[email protected]> for the bug report.
treeview/tree
Tags are removed when tree or treeview widget is destroyed. Many
thanks to Todd Copeland <[email protected]> for the report.
treeview/tree
"index" operation segfaults when tag is empty. Again thanks to Todd
Copeland <[email protected]> for the report.
pkgIndex.tcl
Added checks for package directory and its parent when searching
for BLT shared library. Thanks to Anton Hartl <[email protected]>
for the bug report.
Changes from 2.4x to 2.4y
FEATURES
========
tree
Added -notags switch to "restore" operation.
tree
Added additional fields to the tree "dump" format. When trees are
restored, will try to reuse old node ids (not always possible).
tree
Added -label switch to "copy" operation. This lets you relabel the
destination node.
BUG FIXES
=========
graph/stripchart/barchart
PostScript output sometimes includes a spurious box around an axis.
Thanks to [email protected] for the bug report and example.
tabset/tabnotebook
On errors tabnotebook grows ad infinitum. Thanks to Terri Fischer
<[email protected]> for the bug report and example.
<general>
Tcl_Init fails with "can't find usable init.tcl" when running
bltsh or bltwish compile with ActiveTcl. Changed Tcl_AppInit to
set global "tclDefaultLibrary" variable.
graph
"legend get" operation doesn't account for hidden entries
(i.e. -label is configured to ""). Thanks to Karl Voskuil
<[email protected]> for the bug report and the fix.
graph
NULL pointer referenced (bindingTable) when destroying axis.
bgexec
File redirection broken under Windows.
graph
Area under curve not stippled correctly when bitmap is greater than
8x8 (W95/W98) or device context is a metafile (all?). Created
XFillPolygon replacement for Windows.
tree
Node modifiers are incorrectly ignored when first component is a tag.
treeview
-shadow option no longer accepts empty string (no shadow). Many
thanks to Todd Copeland <[email protected]> for the report.
vector
Vector "create" operation slows down using #auto as more vectors
are created. Thanks to Todd Copeland <[email protected]>
for the bug report.
treeview/hiertable
Widget doesn't scroll horizontally correctly when -hideleaves is
true. Ignores last level when computing world width.
treeview/hiertable
Deleting a node doesn't remove tag references to it. Thanks to
Steven Hafer <[email protected]> for the bug report.
treeview/hiertable
Giving the -path option to the "index" operation always fails. Thanks
to Paul Robins <[email protected]> for the bug report.
<treeview.mann/hiertable.mann>
Documentation for the "get" operation isn't clear that it always returns
a list of lists when the -separator option is "" (the default), even
when there is only one node specified.
Changes from 2.4w to 2.4x
FEATURES
========
dragdrop
Back ported 8.3 "dde" command for use with 8.0.
BUG FIXES
=========
treeview/hiertable
Can't create column that starts with a minus. Thanks to Todd Copeland
<[email protected]> for the bug report.
<Makefile.in>
pkgIndex.tcl file not getting rebuilt. Thanks to Terri Fischer
<[email protected]> for the bug report and fix.
<dragdrop1.tcl,dragdrop2.tcl>
Send emulation script isn't needed for Tcl8.0 under Windows. Thanks to
Linh H Phan <[email protected]> for the bug report.
graph/stripchart/barchart
Using pen styles results in a bus error. Thanks to Julian H J
Loaring <[email protected]> for the bug report.
hiertable/treeview/tree
List of data values is reversed from 2.4v. Thanks to Jorge Suit
Prez Ronda <[email protected]> for the bug report.
<bltObjConfig.c>
Missing header file for varargs. Thanks to Terri Fischer <[email protected]>
for the bug report and fix.
<bltAlloc.c>
TclpAlloc and TclpFree not found in Tcl 8.0. Again, thanks to Terri
Fischer <[email protected]> for the bug report and fix.
<BLT.mann,barchart.mann,eps.mann,graph.mann,tabset.man>
Updated manual pages graciously provided by Terri Fischer <[email protected]>.
Changes from 2.4v to 2.4w
FEATURES
========
treeview
New treeview widget is updated version of hiertable. Uses Tcl_Objs.
The "hiertable" and "treeview" are the 100% syntax compatible. The
old hiertable is temporariliy available as "hiertable-old" should
you find errors. Also use the "treeview" instead of the "hierbox"
widget. The "hierbox" isn't as capable and doesn't use tree data
objects.
treeview/hiertable
Added tagging operations similar to the "tree" command. Attaching
a tree to the treeview/hiertable (the -tree option) now gives you
access to the tree's tags too. Don't confuse this with "bindtags".
For example, you can tag nodes with the "tree" command and operate
on them in the treeview/hiertable widget using that tag. If you
don't want to share tags, the -newtags option will prevent this.
There's an update "treeview" manual entry to describe this.
treeview/hiertable
The "nearest" operation can report what part of the entry the pointer
is over. If a variable name argument is given, the variable will
contain either "button", "label", "icon", or "".
eps/winop
Faster image zooming and rotation (fixed-point arithmetic).
BUG FIXES
=========
vector
Test of real number in a range is broken. Thanks to Paul Robins
for the bug report.
treeview/hiertable
"nearest" operation doesn't allow an optional "variable" argument.
hiertable/hierbox
The -selectioncommand command is invoked when closing an entry
with no selected descendants. Thanks to Jorge Suit Prez Ronda
<[email protected]> for the bug report.
hiertable/hierbox
In single "mode", the selection anchor is not updated when the
selection is moved via the keyboard. Thanks to Jorge Suit Prez Ronda
<[email protected]> for the bug report.
hiertable
Editor overwrites memory (seen best under Windows).
hiertable
The "open" and "close" operations don't check for no arguments.
hiertable
Vertical dotted lines start on wrong y-coordinate when clipped.
hiertable
Active button isn't clipped by column titles.
hiertable
Column titles are still displayed and picked despite -showtitles
set to "no".
hiertable
Editor doesn't automatically select acquired text.
hiertable
Moving the cursor in the editor doesn't clear the selection.
hiertable
Typing a "space" doesn't replace the selection with a space.
tree
Traces on the same node loop infinitely. TRACE_ACTIVE flag not
set/unset.
tree
The "restore" and "restorefile" operations don't handle newlines
in data key/values, node labels, or tags.
graph/barchart/stripchart
Crosshairs left on screen when the mouse is pulled quicky from the
widget.
graph/barchart/stripchart
Spurious crosshairs also left on the screen if axes are reconfigured
(active axes).
graph/barchart/stripchart
Image marker not updated if image is changed.
graph/barchart/stripchart
PostScript not generated for -showvalues option.
graph/barchart/stripchart
PostScript not generated for errorbars.
bgexec
No check for wrong number of arguments if switch is present.
<bltAlloc.c>
Blt_MallocProcPtr and Blt_FreeProcPtr not declared extern in
bltInt.h
<bltTile.c>
Bogus test for mask in Blt_TilePolygon routine.
<bltImage.c>
Counter for transparent pixels wrong in Win32 version of Blt_PolygonMask.
<bltInit.c>
blt_version not set when dynamically loaded into wish83.exe.
Note: Stub support is still missing although patches have been
graciously provided for the 2.4q release. This will be added as
soon as I can get some free time.
Changes from 2.4u to 2.4v
FEATURES
========
bgexec
New -linebuffered switch.
bgexec myVar -linebuffered yes -onoutput ShowLine myProg &
This option lets you process updated data (-onerror, -onoutput,
-error, or -output) on a line by line basis. Normally notifications
occur once for entire data block. This switch causes separate
notifications to made for each complete line.
bgexec
New -decodeoutput and -decodeerror switches.
bgexec myVar -decodeoutput unicode -output myOut myProg &
Translates data from the specified encoding to UTF before passing
it to the Tcl interpreter. Normally no translation is made (under
Windows CR-LF conversions are made) and the raw, typically ASCII,
characters are passed back to the Tcl interpreter.
Binary data can be collected with the "binary" encoding. For
versions using Tcl 8.1 or greater, data is returned as Tcl byte
array object, so you can use the "binary" command to convert it
as needed.
set out [bgexec myVar -decodeoutput binary myProg]
binary scan $myOut f values
tree
New "dumpfile" and "restorefile" operations to "tree" command.
tree
Extended -> syntax in tree command to use node names.
set data [$tree get root->"fred"->"pebbles"]
tree
Improved memory handling of large trees. Pool allocators added to
reduce overall memory consumption.
graph/stripchart/barchart
New -buffergraph switch.
.graph configure -buffergraph no
graph
New options to fill area under curve of an element.
.graph element configure line1 -areapattern solid
.graph element configure line2 -areapattern BLT
graph/stripchart/barchart
New -reduce option.
.graph element configure line1 -abstol 0.5
Designates error tolerance for line simplificiation. Points that
vary less than the given tolerance are merged into a single line
segment.
miscellaneous
Can globally replace memory allocation routines by setting
pointers Blt_MallocProcPtr and Blt_FreeProcPtr.
winop
New "rotate" operation lets you rotate photo images.
BUG FIXES
=========
bgexec
Fixed a race condition that caused assertion under Windows to fail.
When both stdout and stderr are collected, if the stdout handler
finishes first, the memory used by read thread handler could be
freed before the stderr pipe was closed.
graph/stripchart/barchart
PostScript coordinates are no longer integers (screen resolution).
graph/stripchart/barchart
Polygon markers now clipped properly.
vector
Vectors can't be mapped to local variables. This was broken
in the 2.4r release. Thanks to Johannes Zellner
<[email protected]> for the bug report.
vector
Tcl command associated with a vector not destroyed when the vector
is deleted. Much thanks to Alexander Eisenhuth <[email protected]>
for the bug report and the example script.
drag&drop
"drag&drop" command fails when multiple formats are specified.
Seen in the dragdrop2.tcl demo.
spline
Incorrectly reports the spline's x-vector to be non-monotonic.
Thanks to Chang Li <[email protected]> for the bug report.
<pkgIndex.tcl>
Fixed pkgIndex.tcl.in to figure out whether to load libBLT24.so
or libBLTlite24.so when BLT is loaded, not when the package is
registered. Thanks to Dr. Dieter Ruppert <[email protected]> for
the bug report and fix.
Changes from 2.4t to 2.4u
BUG FIXES
=========
<./configure>
Fixed my stupid error (missing close brace) in ./configure file.
<Makefile.in>
Makefile in src/shared doesn't define BLT_LIBRARY. Thanks
to [email protected] (Terri L. Fischer) for the bug report and fix.
graph/barchart/stripchart
graph doesn't find vector in global namespace when inside of another
namespace. Thanks to Julian H J Loaring <[email protected]> for
the bug report.
graph/barchart/stripchart
Scratch buffer to small for PostScript prolog. Thanks again to
Julian H J Loaring <[email protected]> for the bug report
and fix.
graph
"bind" would fail on elements without traces (-linewidth 0).
Thanks again to [email protected] (Terri L. Fischer) for the bug report.
o Many changes to "dnd" command.
+ -package option is treated as a command prefix (like the
scrollbar), not a script. Percent sign substitutions are
no longer allowed. Information is passed via key-value
parameters like the -onleave, -ondrop procedures. Procedure
must return 1 if operation was Ok, and 0 if it failed.
+ The command arguments for both the "setdata" and "getdata"
operations have changed from an arbitrary Tcl script with
percent sign substitutions, to a command prefix with
key-value arguments appended. The general form is
procName widget args...
where args is one of more key value pairs.
x Relative X-coordinate of drop or pickup.
y Relative Y-coordinate of drop or pickup.
timestamp Timestamp of transaction.
format Format desired.
value Value transfered (setdata only).
You can use array set to parse "args". For example:
proc GetColor { widget args } {
array set info $args
puts "x-coordinate is $info(x)"
puts "selected format is $info(format)"
return [$widget cget -bg]
}
+ If an -onmotion procedure is specified for the target, it is
automatically invoked on drops before the -dropcmd is run.
If it returns 0, the drop is canceled.
+ Added ./demos/dnd2.tcl to show more complicated example.
Just like dnd1.tcl, you need to run two of them at the same
time to see the drag-and-drop operations.
+ Target property wasn't getting reset when changing -onmotion,
-onleave, etc. procedures.
+ Timestamps now displayed as unsigned.
Many thanks to Tom Lane <[email protected]> for all his help and
suggestions.
Changes from 2.4s to 2.4t
o Tree command syntax changes. Notify and trace operation now work
as advertised and a copy operation added. Many thanks to Matt
Newman <[email protected]> for meticulously reviewing the command.
o graph "snap" operation syntax change. Added support for generating
Aldus metafiles and enhanced metafiles under Windows.
# Normal syntax.
set image [image create photo]
.graph snap $image
# New additions.
.graph snap -format emf myFile.emf ;# Enhanced metafile
.graph snap -format wmf myFile.wmf ;# Aldus placable metafile
.graph snap -format emf CLIPBOARD ;# Metafile written into clipboard.
Old width and height arguments are replaced with -width and -height
switches.
.graph snap $image 500 500 ;# Old
.graph snap -width 500 -height 500 $image ;# New
Thanks to Alain Zuur <[email protected]> for the enhancement.
o Tabset/Tabnotebook -selectforeground option for tabs using wrong
configuration option type. Both the bug report and fix are from
Mark E. Smith <[email protected]>. Thanks.
o graph "bind" to use closest point instead of line segment when
element contains only 1 point. Thanks to Uwe Klein
<[email protected]> for the bug report and script.
o Hiertable tree view column has been internally renamed to
"BLT Hiertable widgetName".
It was formerly the name of the widget. Fortunately, you can
refer to the column as "treeView" instead.
.ht column configure treeView -text "View Label"
o There's no ".tree" suffix anymore on the default tree created by
the hiertable widget. It's now just the widget name.
o Many hiertable column bug fixes. Thanks to Julian H J Loaring
<[email protected]> for all the tests and reports.
o Rotated text displayed incorrectly under Windows 95/98 using
non-TrueType fonts. A test for typetype fonts has been restored.
Thanks to James Pakko <[email protected]> for the bug report and
script.
Under Windows, Non-TrueType fonts are drawn into a bitmap and
the bitmap is rotated. This provides the same quality as using
rotated fonts for on-screen display. Unfortunately it's much
poorer for higher resolution devices such as printers. The best
bet is to simply choose TrueType fonts if you can.
o Improved Hiertable folder images. Many thanks to Tom Lane
<[email protected]> for the new images.
o Bgexec segfaults under Windows (NT/95) if file handler is
deleted inside of callback. Thanks to Chris Oliver
<[email protected]> for the bug report.
o graph segfaults if pen style range min/max are the same.
Thanks to Thomas Wu <[email protected]> for the bug report and script.
o tabnotebook and tabset widgets would generate X11 errors if
embedded window was resize to zero width/height. Thanks to
Ed Ohsone <[email protected]> for the report and the script to
demonstrate the error.
Changes from 2.4r to 2.4s
o Fixed bug in stripchart (introduced in 2.4r) allowing uninitialized
data to be displayed. Thanks to Dick Gooris <[email protected]> for
the bug report.
o AIX dynamic loading. Actually made it work on a 4.3 AIX box.
o Fixed -tree option in hiertable. Would segfault if tree was not
fully initialized first.
o Tree insert operation syntax changed from
tree0 insert $node key1 value1 key2 value2
to
tree0 insert $node -data { key1 value1 key2 value2 }
o Fixed tree label operation. Save uid instead of string.
o Bug in TreeEventProc, should be node != NULL instead of node >= 0
Thanks to Julian H J Loaring <[email protected]> for the
bug report.
What's new in 2.4?
1. "eps" canvas item.
An encapsulated PostScript canvas item lets you embed an EPS file into
the canvas. The "eps" item displays either a EPS preview image found
in the file, or a Tk image that you provide.
2. "hierbox" and "hiertable" widget.
Hierarchical listbox widget. Displays a general ordered tree which
may be built on-the-fly or all at once.
3. "tabset" and "tabnotebook" widget.
Can be used either as a tab notebook or simple tabset. Tabs can
be arranged in a variety of ways: multi-tiered, scrolled, and
attached to any of the four sides. Tab labels can contain both
images and text (text can be arbitrarily rotated). Notebook pages
can be torn-off into separate windows and replaced later.
4. Changes to vectors.
New features:
o Vector expressions. The vector now has an "expr" operation
that lets you perform math (including math library
functions) on vectors. There are several new functions
(such as "max", "min", "mean" "median", "q1", "q3", "prod",
"sum", "adev", "sdev", "skew", ...)
vector expr { sin(x)^2 + cos(x)^2 }
y expr { log(x) * $value }
o New syntax to create and destroy vectors:
vector create x
vector destroy x
The old syntax for creating vectors still works.
vector x
o Vectors are *not* automatically deleted when their Tcl
variable is unset anymore. This means that you can
temporarily map vectors to variables and use them as you
would an ordinary Tcl array (kind of like "upvar").
proc AddValue { vecName value } {
$vecName variable x
set x(++end) $value
}
There's an "-watchunset" flag to restore the old
behavior if you need it.
vector create x -watchunset yes
o Vectors still automatically create Tcl variables by
default. I'd like to change this, but it silently
breaks lots of code, so it will stay.
Bug fixes:
o Vector reallocation failed when shrinking the vector.
o Vector "destroy" callback made after vector was already freed.
o Fixed vector/scalar operations.
o Always store results in temporary, so not to overwrite accidently
current vector values.
5. Changes to Graph, Barchart, Stripchart widgets.
New features:
o Drop shadows for text (titles, markers, etc). Drop
shadows improve contrast when displaying text over a
background with similar color intensities.
o Postscript "-preview" option to generate a EPS
PostScript preview image that can be read and
displayed by the EPS canvas item.
o New "-topvariable", "-bottomvariable",
"-leftvariable", and "-rightvariable" options. They
specify variables to contain the current margin
sizes. These variables are updated whenever the
graph is redrawn.
o New "-aspect" option. Let's you maintain a particular aspect
ratio for the the graph.
o Image markers can now be stretched and zoomed like
bitmap markers.
o Bind operation for legend entries, markers, and elements.
Much thanks to Julian Loaring <[email protected]>
for the idea.
o New "-xor" option for line markers, lets you draw the line
by rubberbanded by XOR-ing without requiring the graph to
be redrawn. This can be used, for example, to select regions
for zooming.
Thanks to Johannes Zellner ([email protected])
for the idea.
o Can attach a scrollbar to an axis.
.sbar configure -command { .graph axis view y }
.graph axis configure y -scrollcommand { .sbar set }
Bug fixes:
o Closest line (point) broken when using pens styles.
o Marker elastic coordinates were wrong.
o PostScript bounding box included the border of the page.
o Bad PostScript generated for barchart symbols with stipples.
o Wrong dimensions computed with postscript " -maxpect" option.
o Text markers fixed.
Thanks to De Clarke for the bug report and fix.
o Renamed axis configuration from "-range" to "-autorange" to
match the documentation.
Thanks to Brian Smith for the correction.
o Fixed polygon marker pick routine.
o Fixed active tab labels overlapping the selected tab.
o PostScript graph footer turned off by default. Use -footer option
to turn on.
.graph postscript configure -footer yes