fop/CHANGES

==============================================================================
Done since 0.20.4 release
- Use Locator to make system id, line and column number available to
  FOs. Use it when throwing FOPExceptions. TBD: Use it in mesages, also
  catch RuntimeExceptions and wrap them.
- Added PDF encryption. Available options: no printing, no copy, no
  edit, no annotations.
  Submitted by Patrick C. Lankswert <PLankswert@InsightBB.COM>
- Fixed text alingment for lines containing forward pointing page number
  citations. This should greatly improve TOC layout. (J.Pietschmann)
- Fixed repeatedly laid out small caps text (for example in static
  content or due ot keeps). (J.Pietschmann)
- Fixed marker handling thouroughly. All retrieving boundaries and
  retrieve-position first-starting-within-page and last-starting-within-page
  should work now, as well as multiline/multiblock marker contents.
  Retrieve-position first-including-carryover and last-ending-within-page
  do not yet work. Also fixed marker handling in case layout was undone
  due to keeps (#16999). (J.Pietschmann, based on material submitted
  by Marc C. Allman)
- Fixed some sources of "wrong operand type" error in Acrobat Reader. They
  were caused by rounding bugs, mostly experienced with SVG files coming from
  OpenOffice. (Jeremias Maerki)
- FOP Ant task: Fix for logging behaviour, fix for directory structure
  preservation for nested filesets and additional attribute "logFiles".
  Submitted by: Stefan Wachter <Stefan.Wachter@gmx.de>
- Fixed TrueType embedding bug when the font doesn't contain the fpgm table
  which is optional. (Jeremias Maerki)
- Added support for url()-syntax to the fo:basic-link-Element
  Submitted by: Stefan Wachter <Stefan.Wachter@gmx.de>
- Added new extension element for defining named destinations (PDF)
  Submitted by: Lloyd McKenzie <lmckenzi@ca.ibm.com> and Stefan Wachter
- Added support for linking to a specific page and a named destinations
  of an external PDF file
  Submitted by: Bernd Brandstetter <bbrand@freenet.de>
- Added Turkish messages for AWT Viewer
  Submitted by: Togan Muftuoglu <toganm@users.sourceforge.net>
- Fixed leader expansion and leader alignment to reference area to some
  extent(#7490 and #15936). (J.Pietschmann)
- Temporary fix for wrong mapping of the hyphen character in the PostScript
  renderer. Needs to be done in a clean way later.
  Submitted by: Arnd Beissner <arnd.beissner@cappelino.de>
- Fix for bug 16257: Get ascender/descender from OS/2 table if the ones in
  hhea are zero (Jeremias Maerki)
- Reduced the size of the PSRenderer output (removed redundant movetos)
  Submitted by: Arnd Beißner <arnd.beissner@cappelino.de> (see bug #16130)
- Fixed many (not all) problems with link hotspot positioning and made
  the default behavior to create a single hotspot over all words in each
  line (Karen Lease)
- Added continued-label extension which works in table-header or table-footer
  to add text in non-first occurences of those areas (Karen Lease)
- Fixed a bug in the TTF font inclusion which was showing up when using
  non-stroked text in SVG (Karen Lease)
- Improved table behavior in some cases where keeps properties are used on
  rows (Karen Lease)
- Fixed NullPointerException in Label.java experienced by certain DocBook
  users.
  Submitted by: Stephan Wiesner <stephan@stephan-wiesner.de>
- Fixed bug #15877: ArrayIndexOutOfBoundException with certain TrueType fonts.
  Reserved name indexes were not ignored. (Jeremias Maerki)
- Fixed resolution of relative URLs in FopImageFactory with IBM JDK
  Submitted by: Manuel Mall <mm@arcus.com.au> (see bug #14948)
- Fixed infinite loop when page-height="auto" (Oleg Tkachenko)
- Fix embedding of Adobe Type 1 fonts. PFB file encoded in PC format were
  not decoded prior to embedding. This may explain error messages with
  certain RIP engines. (Jeremias Maerki)
- Added infinite loop detection (just halts processing, see bug #8878)
  Submitted by: Rhett Aultman (raultman@fcci-group.com)
- Added autoselecting  portrait/landscape on PCL Renderer (see bug #6638)
  Submitted by: vicentesalvador@netscape.net (Vicente Salvador)
- Improved AWT Font-measuring/rendering (see bug #14657)
  Submitted by: Ralph LaChance <Ralph_LaChance@compuserve.com>
- Updated examples/fo files to remove all errors and warnings during build
  Submitted by: Manuel Mall <mm@arcus.com.au> (see bug #13867)
- Performance tuning (reduced object creation etc.) (see bug #14013)
  Submitted by: Henrik Olsson <henrik.olsson@intentia.se>
- Update to Xerces 2.2.1 (Jeremias Maerki)
- Fixed EOFException in TTFReader (Bug #14576)
  Submitted by: Bernard D'Have <bdhaveos@wanadoo.be>
- Added support for CCITT Group 4 encoded TIFF files
  Made JAI support dynamic (no recompile needed anymore)
  Submitted by: Manuel Mall <mm@arcus.com.au> (see bug #13866)
- Fixed problem with jpegs with icc profile and acrobat reader 5 (Bug #11301)
  Submitted by: Stephan Neuhaus <stephan.neuhaus@myview.de>
- Fix bug in LinkSet.mergeLinks() (ArrayOutOfBoundsException when number of
  rects is zero) (Jeremias Maerki)
- Removed the necessity for a buildtools.jar (Jeremias Maerki)
- Updated several JARs: Ant 1.5.1, Xerces 2.2.0, Xalan 2.4.1 (Jeremias Maerki)
- Fixed some multi-threading issues (NPEs)
  Submitted by: Joachim Unger <joachim.unger@softwareag.com>
- Improved registration of ImageReader implementations (Jeremias Maerki)
- Refactored baseDir stuff. Internally most code has been changed to work on
  URLs instead of filenames. The baseDir property is evaluated to a baseURL
  which can be accessed through Configuration.getBaseURL() (Jeremias Maerki)
- Added a fontBaseDir property (similar to baseDir) which represents a base
  dir/URL for fonts. If this property isn't set, a fallback is made to
  baseDir. (Jeremias Maerki)
- Fixed some javadoc warnings
  Submitted by: Victor Mote <vic@outfitr.com>
- Added translation for GoToPageDialog and update for czech translations
  Submitted by: Michal Buchtik <BuchtikM@dlsystem.cz>
- background properties for all regions + regions precedence support
  (Oleg Tkachenko)
- TXTRenderer output encoding (Oleg Tkachenko)
- border-spacing support (Oleg Tkachenko)
- New Avalon Framework JAR with Log4J support (Bug 11274) (Jeremias Maerki)
- Added a RunLengthEncode filter for the PostScript renderer
  Submitted by: Stephen Wolke <smwolke@geistig.com>
- Added a property on the PostScript renderer for switching between PostScript
  Level 2 and 3. Default is Level 3. (Jeremias Maerki)
- Improved standard conformance for forced page counts (J.Pietschmann)
- Better error reporting for common problems (invalid page master references,
  missing table-body elements) (J.Pietschmann)
- Improved handling of text containing entity references. (J.Pietschmann)
- Made marker references work for markers not from the current page,
  with some caveats (J.Pietschmann)
- Simplification of ASCII85 computation, work around for a JVM bug on Linux
  (J.Pietschmann)
- Fixed width calculation for spaces (J.Pietschmann)
- Fixed problems with setting text decorations on fo:wrapper. (J.Pietschmann)
- Automatic compilation on Java1.4 (J.Pietschmann)
- More possiblities to pass data to FOP (J.Pietschmann)
- Fixed missing Ids for table rows (#12876) (J.Pietschmann)
- Page number citations are now correctly formatted (#13691) (J.Pietschmann)
- Text decoration and links now work with hyphenated words. (#4511)
  (J.Pietschmann)
- Fixed problems with scrambled and lost related to hyphenation (#6042
  and a few others). (J.Pietschmann)
- Fixed wrong space generation related to hyphenation. (J.Pietschmann)

==============================================================================
Done since 0.20.3 release

- Moved from org.apache.log.Logger to org.apache.avalon.framework.logger.Logger
  (this removes dependency from logkit)
  Submitted by: Michael Gratton <mjg@recalldesign.com>
- Made FOP running with any JAXP1.1 compliant parser/transformer
  Submitted by: Joerg Pietschmann <joerg.pietschmann@zkb.ch>
- Updated old servlet code, moved to contrib
  Submitted By: Jeremias Maerki <jeremias.maerki@outline.ch>
- Added russian messages for AWTViewer
  fallback to english messages if resources are not found
  Submitted by: Alex V. Alishevskikh <alex@openmechanics.net>
- AWT renderer exit for closing window is only called when started from
  command line and not on the window (Keiron Liddle)
- Updated ant to version 1.4.1 (Christian Geisert)
  (ant-optional.jar is no longer needed)
- Changed build.sh to work under cygwin
  Submitted by: Andriy Palamarchuk <APalamar@wyeth.com>
- Added turkish hyphenation patterns
  Submitted by: Togan Muftuoglu <toganm@users.sourceforge.net>
- Added portuguese hyphenation patterns
  Submitted by: Paulo Soares <psoares@consiste.pt>
- Added czech translation for AWT viewer
  Submitted by: Michal Buchtik <BuchtikM@dlsystem.cz>
- removed xalan1 support (Christian Geisert)
- Added czech hyphenation patterns
  Submitted by: Michal Buchtik <BuchtikM@dlsystem.cz>
- Added support for background-image
  Submitted by: Michael Gratton <mjg@recalldesign.com>
- Updated Batik to 1.5beta2 and improved the useragent usage
  (Keiron Liddle)
- Fixed a problem when EPS files have Bounding Boxes containing
  negative integers.
  Submitted by:	Claes Bergsten <claes.bergsten@tjgroup.com>
- Workaround for a bug in JDK 1.3.0.* and 1.4 to improve text output.
  Submitted by: Ralph LaChance <Ralph_LaChance@compuserve.com>
- Added support for overline, line-through and text-decoration on
  inline spaces for AWT renderer (Jeremias Maerki)
- Added patch to prevent the same image being inserted multiple times
  into pdf graphics
  Submitted by:	Paul Reavis <preavis@partnersoft.com>
- Fixed PDF-Renderer to work on EBCDIC systems
  (Actually on systems where file.encoding != ASCII/ISO-8859)
  Submitted by: Jason West <Jason.West@mail.state.ky.us>
- Updated xerces to version 2.0.1 and xalan to version 2.3.1
  (Christian Geisert)
- Fixed svg links to external url (Keiron)
- Fixed problem with Win98/ME commandline (Christian Geisert)
- Removed Tc that were inserted in [...] TJ commands. (Bug 9054)
- Fixed letter-spacing (Jeremias Maerki)
- BaseDir property is now used for loading custom fonts (Bug #7608)
  (thanks to Arnd Beissner and Brian O'Kelley)
- Added support for comma-separated values for the font-family property
  Submitted by: Oleg Tkachenko <olegt@multiconn.com>
- Fixed support for fractional font sizes
  Submitted by: Björn Lütkemeier
- Added exit codes/file deletion in case of an error (Joerg Pietschmann)
- Implemented margin shorthand
  Submitted by: Peter Kullmann <p.kullmann@arenae.ch>
- Added reload functionality in AWT preview window
  Submitted by: Oleg Tkachenko <olegt@multiconn.com>

==============================================================================
Done since 0.20.2 release
*** General
- Added correct metrics for euro sign in standard fonts
  (bug 2105 and bug 4654)
  Submitted by: Rainer Garus <rainer.garus@nexgo.de>
- Fixed problem with computing remaining with in LineArea where start-indent <> 0
  (bug 4839)
  Submitted by: Rainer Garus <rainer.garus@nexgo.de>
- Support for CMYK and embedded ICC profiles in jpeg images (Tore Engvig)
- Support for jpeg images in PS Renderer (Tore Engvig)
- Add support for EPS images in PostScript renderer and limited EPS support in
  PDF Renderer (Tore Engvig)
- fixed bug in TTFReader (unsigned lsb changed to signed)
  Submitted by: Cristi Ruja, c_ruja@yahoo.com
- fixed threading problem (Keiron Liddle)
- Formatting results patch to enable embedders to obtain info from render doc
  Submitted by:	Jeremias Maerki <jeremias.maerki@outline.ch>
- Better handling of missing markers (Keiron Liddle)
- jimi.jar removed for removed for license reasons
- Added "Printing from a servlet" example
  Submitted by:	Ralph LaChance <Ralph_LaChance@compuserve.com>
- Proper use of font encodings for "native" fonts
  Submitted by: Peter S. Housel (housel@acm.org) and Rainer Garus (rainer.garus@arcor.de)
- fixed Marker (Christian Geisert)
- updated logkit from 1.0b4 to to 1.0 (Christian Geisert)

*** Tables
- Implement the proportional-column-width() function in table-column and
make it possible to specify table width (or inline-progression-dimension)
using percentage values. (Karen Lease)
- Fix a bug causing strange layout when a cell containing a nested table
was laid out again because another cell in the same row was split (David
Dixon's example). (Karen Lease)
- Fix for infinite loops with table keeps (Christian Geisert)

*** Datatypes
- Rearrange the Length class hierarchy as part of the table-column proportional
width work. (Karen Lease)

*** Functions
- make sure label-end() value gets calculated
  (fix for bug #6094, endless loop while processing list-item-label))

*** Areas
- Fix BlockArea to account for padding and border when calculating space
remaining for content. (Karen Lease)
- Improved line breaking for japanese
  Submitted by:	Satoshi Ishigami <ishigami@victokai.co.jp>

*** Properties
- Changed "master-name" to "master-reference" on fo:page-sequence,
  fo:single-page-master-reference, fo:repeatable-page-master-reference and
  fo:conditional-page-master-reference to comply with the latest XSL recommendation.
  Also changed the unimplemented property space-treatment to white-space-treatment and
  updated examples and tests to use the new syntax.
  Submitted by: Christian Geisert [Christian.Geisert@isu-gmbh.de]
- Add support for inline-progression-dimension and table-layout. (Karen)
- Add support for letter-spacing.
  Submitted by: Raymond Penners <raymond@duologix.nl>
- text-decoration support for blocks (Christian Geisert)
- Added inheritance for the text-decoration property from parent inline or
  block elements (Christian Geisert)

*** SVG
- updated to cvs batik 3/12/2001 for api changes
- fixed problem where width of scaled lines was not correct

*** Images
- fixed problem where streams where opened for cached images

*** Messages
- Improved for some common errors

*** FOTreeBuilder
- fixed npe problem when text outside root element
- handles document errors and unknown namespace better

*** AWTRenderer
- Fixed small border problem
  Submitted by:	Ralph LaChance <Ralph_LaChance@compuserve.com>
- Improved i18n support for AWT viewer (Japanese dialogs)
  Submitted by: Satoshi Ishigami (ishigami@victokai.co.jp)

*** TXTRenderer
- Generated text is written in UTF-8 encoding instead of ISO-8859-1

*** MIFRenderer
- MIF output strings escaping (see bug #1332)
  Submitted by: Vicente Salvador (vicentesalvador@netscape.net)
- Fixed NoSuchElementException in MIF renderer (Christian Geisert)

*** Hyphenation
- Added Polish Hyphenation based on TeX hypenation
  Submitted by: Marcin Kuthan [M.Kuthan@elka.pw.edu.pl]
- Fixed infinite loop with hyphenation
  Submitted by:	Enrico Schnepel <enrico.schnepel@gmx.de>
- Added greek Hyphenation
  Submitted by:	Dimitris Kamenopoulos <el97146@mail.ntua.gr>
- Added hungarian Hyphenation
  Submitted by:	Simon Geza <simon@mail.drotposta.hu>

==============================================================================
Done since 0.20 release

*** General
- immediate fix to PDFRenderer and LazyFont, leading up to 0.20.1
- build.xml improvements (Weiqi Gao)

==============================================================================
Done since 0.19 release

*** General
(Lots and lots of stuff by Keiron Liddle)
- all properties are read, a message will indicate if it is not supported
- all elements now handled, with a message for unsupported elements
- uses Unknown element if namespace+element not found, rather than using
FObjMixed
- support for only loading user fonts for pdf when needed
- fo:wrapper should support inheriting properties better
- table row span, bunch of other significant table improvements by Karen Lease
- support for drawing text into PDFGraphics2D
- marker support (ASandstrom)
- streaming pdf
- changed rendering of alpha images for svg in pdf, now uses white
background
- proper device information for PDFGraphics2D rendering
- code formatted (Tore Engvig)
- element and property list mappings now added through single interface

Mark Lillywhite's performance and memory patch added.
Unfortunately breaks marker support.
XSL-FO with markers is not a good idea until it is fixed.

*** Building
- (build.bat, build.sh) now uses only the local set class path (KLiddle)
- (build.xml) added support for easily using w3c testsuite for build target
test (KLiddle)

*** Examples
- (extensive.fo) sets style so that it looks better (KLiddle)
- (images.fo) images are relative to where the doc is rather than an arbitrary
location (KLiddle)
- (glossary.xml, glossary.xsl) fo:marker examples (ASandstrom)
- (embedding.fo, external.fo) added some more info, examples (KLiddle)
- (headfoot.fo) Fix spanning row example so it works (KLease)

*** Documentation
- (embedding.xml) added info about using xslt input handler (KLiddle)
- (examples.xml) some slightly more info about svg -> pdf (KLiddle)
- (svg.xml) some slightly more info about svg -> pdf (KLiddle)
- (testing.xml) added support for easily using w3c testsuite for build
target test (KLiddle)

*** Hyphenation
- (sk.xml) added slovak hyphenation patterns; Obtained from: skhyphen.tex
Submitted by: KRUMPOLEC Martin <krumpolec@asset.sk>

*** FOP libraries
- (buildtools.jar) added support for easily using w3c testsuite for build
target test (KLiddle)

*** XSL Code Generation
- (elements.xsl) some independance improvements (KLiddle)
- (foproperties.xml) setup a couple of props (KLiddle); activated
space-start/space-end (ASandstrom)
- (foproperties.xml) added all remaining properties, currently just with
type String (KLiddle)
- Support 'format' property on fo:page-sequence (ASandstrom)
- (propmaker.xsl) put import at start; puts the right property family name
in resulting prop file (KLiddle)

*** Package org.apache.fop.apps:
- (AWTStarter.java, CommandLineStarter.java, Driver.java) Adds Mark
Lillywhite's performance
and memory patch in all it's glory. Unfortunately breaks marker support.
(AreaTree getNextPage and getPreviousPage return the current page)
XSL-FO with markers is not a good idea until it is fixed.
- (CommandLineOptions.java) command line support for new ps renderer
Submitted by:  Jeremias Maerki <jeremias.maerki@outline.ch>
- (Driver.java) combined property list setting into element setting
also always get parser class name from one place; allows adding mappings from
user config (KLiddle)
- (Driver.java) command line support for new ps renderer
Submitted by:  Jeremias Maerki <jeremias.maerki@outline.ch>
- (Options.java) fixed error where configfile was not being set (KLiddle)
- (Options.java) Added patch for loading config via Thread ContextClassLoader
Submitted by:   Davanum Srinivas
- (StreamRenderer.java) This just moves the marker supporting code from before
Mark's patch into StreamRenderer. Not tested. (SCoffman)

*** Package org.apache.fop.configuration:
- (Configuration.java) combined property list setting into element setting
also always get parser class name from one place (KLiddle)
- (ConfigurationReader.java) combined property list setting into element
setting; also always get parser class name from one place (KLiddle)

*** Package org.apache.fop.datatypes:
- (ToBeImplemented.java) indicates to be implemented status for
properties not implemented (KLiddle)
- (ToBeImplementedProperty.java) indicates to be implemented status for
properties no implemented (KLiddle)

*** Package org.apache.fop.extensions:
- (ExtensionElementMapping.java) combined property list setting into element
setting; also always get parser class name from one place (KLiddle)

*** Package org.apache.fop.fo:
started support to read all relevant properties, mostly commented; added all
remaining elements, currently are indicated as not implemented; removed old
elements (KLiddle)
- (ElementMapping.java) combined property list setting into element setting
also always get parser class name from one place (KLiddle)
- (FONode.java) initial marker support (ASandstrom)
- (FOTreeBuilder.java) gets all properties specified on each element; adds
"Unknown" element for unknown elements or other namespaces; need to get a
consistent and easy way to use the property values (KLiddle)
- (FOTreeBuilder.java) Added patch to allow FOTreeBuilder to be reused easier
Submitted by: Christopher Burkey
- (FObj.java) initial marker support (ASandstrom)
- (PropertyManager.java) handles page break for nested blocks now (KLiddle);
addressing break boundary conditions (ASandstrom)

*** Package org.apache.fop.fo.flow:
Table border placement and border-drawing improvements (PDF only)
Added support for the "height" property on table-row and for display-align
(except "auto") on table-cell.
Partial support for the "collapse" style of cell-borders was contributed
by Ivan Demakov (Jun 14, maybe that was already in 0.19?). The support
for "height" on table-cell was also contributed by Ivan.
- (Block.java) changed Area methods slightly (ASandstrom); initial marker
support, addressing break boundary conditions (ASandstrom)
- (ListBlock.java, ListItem.java, ListItemBody.java, ListItemLabel.java)
added support for 'returned-by' (ASandstrom)
- (Marker.java) initial marker support (ASandstrom)
- (PageNumber.java) Supports page-number formatting (ASandstrom)
- (RetrieveMarker.java) initial marker support (ASandstrom)
- (RowSpanMgr.java) Helper class for spanning rows (KLease)
- (Table.java) Fix some bugs in table and cell border drawing and cell
width calculations (KLease)
- (TableBody.java) Implements spanning table rows (KLease)
- (TableCell.java) Use a copy of BorderAndPadding to fix alignment bugs
in header/footer cells (KLease); Fix some bugs in table and cell border drawing
and cell width calculations (KLease); Make display-align work on table-cell
(KLease) Implements spanning table rows (KLease)
- (TableColumn.java) Fix some bugs in table and cell border drawing and
cell width calculations (KLease)
- (TableRow.java) Make display-align work on table-cell (KLease);
checkBreakBefore signature (Weiqi Gao); Fix spanning bug; use height property
(KLease) Implements spanning table rows (KLease)

*** Package org.apache.fop.fo.pagination:
- (PageNumberGenerator.java) helper class for page-number formatting
(ASandstrom)
- (PageSequence.java) initial marker support; support 'force-page-count';
Supports page-number formatting (ASandstrom); should handle page number
properly, with threads and multiple page sequences
Submitted by: Jeremias Maerki <jeremias.maerki@outline.ch>
- (RepeatablePageMasterAlternatives.java) restore ability to do blank pages
(ASandstrom)
- (Root.java) initial marker support; support 'force-page-count' (ASandstrom)
; should handle page number properly, with threads and multiple page sequences
Submitted by: Jeremias Maerki <jeremias.maerki@outline.ch>

*** Package org.apache.fop.fonts:
- (Glyphs.java) Fixes for unicode escapes that were removed during code
formatting (Sasaki Suguru [s-sasaki@hkg.odn.ne.jp])
- (TTFFile.java) Some glyphs are missed when more then one glyph maps to the
same data, now fixed. (SASAKI Suguru [s-sasaki@hkg.odn.ne.jp])

*** Package org.apache.fop.image:
- (FopImageFactory.java) changed to correct mime type
catch error if batik not available (KLiddle); compiles on jdk1.1;
fixes possible npe when no protocol specified; tries to get the reference from
baseDir + ref path (KLiddle)
- (SVGReader.java) changed to correct mime type; catch error if batik not
available (KLiddle)

*** Package org.apache.fop.layout:
- (AbsolutePositionProps.java, AccessibilityProps.java) adds the remaining
property groups (KLiddle)
- (Area.java) changed Area methods slightly; improving area information; initial
marker support; addressing break boundary conditions (ASandstrom)
- (AreaContainer.java) improving area information (ASandstrom)
- (AuralProps.java, BackgroundProps.java) adds the remaining property groups
(KLiddle)
- (BlockArea.java) Fix a bug which caused FOP to overestimate the space
available for the first line of a Block (KLease)
- (BorderAndPadding.java) Add clone method (KLease); Make display-align work
on table-cell (KLease)
- (FontInfo.java) updates to pdf text painter (KLiddle)
- (LineArea.java) Fixes bug that causes character - glyph mapping to occur
twice in getWordWidth method causing overlapping areas.
(Struan Judd [struan@sjudd.com])
- (LineArea.java) Fixes for unicode escapes that were removed during code
formatting (Sasaki Suguru [s-sasaki@hkg.odn.ne.jp])
- (LineArea.java) Added support for various spaces, inluding non-breaking space
  (fixes bug no 2297) (TEngvig)
Added support for line breaking in the middle of words for CJK languages
Fixes for bug 2243 based on a patch from rainer.garus@nexgo.de
- (LineArea.java) This fixes bug 2556 by changing the leader with pattern
"space" to use an InlineSpace instead of adding actually spaces. (TEngvig)
- (MarginInlineProps.java) adds the remaining property groups (KLiddle)
- (Page.java) initial marker support; page-number formatting (ASandstrom)
- (RelativePositionProps.java) adds the remaining property groups (KLiddle)

*** Package org.apache.fop.layout.hyphenation:
- (Hyphenator.java) Added patch for loading config via Thread ContextClassLoader
(Davanum Srinivas)
- (TernaryTree.java) Fixes for unicode escapes that were removed during code
formatting (Sasaki Suguru [s-sasaki@hkg.odn.ne.jp])

*** Package org.apache.fop.layout.inline:
- (InlineSpace.java) Added support for various spaces, including non-breaking
space (fixes bug no 2297); Added support for line breaking in the middle of
words for CJK languages (TEngvig)
Fixes for bug 2243 based on a patch from rainer.garus@nexgo.de

*** Package org.apache.fop.pdf:
- (PDFColor.java) changed PDFNumber to use static methods (Liddle)
- (PDFDocument.java) adds support for lazy loading of fonts; saves some cpu,
memory (SASAKI Suguru <s-sasaki@hkg.odn.ne.jp>)
- (PDFOutline.java) Adds support for unicode characters in bookmarks.
(SASAKI Suguru [s-sasaki@hkg.odn.ne.jp])

*** Package org.apache.fop.render:
- (PrintRenderer.java) Add new addFilledRect method to make it possible to
draw filled rectangles without any stroke in PDF; in doFrame, use rectangles
instead of lines for borders to eliminate pixel errors (KLease)
- (awt.AWTRenderer.java) updated to new batik interface (KLiddle)
improvements to AWTRenderer (borders,backgrounds...)
(Ralph LaChance/Andy Langowitz):
[ AWTRenderers  (-awt and -print options)
         - eliminated 3D-effect in rendering background color
         - borders now draw wider than 1 pixel if appropriate
         - fixed a roundoff error in background and border dimension/location
         - fixed a positioning error on Top and Right borders ]
- (pdf.FontSetup.java) adds support for lazy loading of fonts
saves some cpu, memory (SASAKI Suguru <s-sasaki@hkg.odn.ne.jp>)
- (pdf/PDFRenderer.java) adds support for lazy loading of fonts
saves some cpu, memory (SASAKI Suguru <s-sasaki@hkg.odn.ne.jp>)
- (pdf/PDFRenderer.java) updated to new batik interface (KLiddle)
- (pdf/PDFRenderer.java) added the start of svg linking; also improved a few
text things (KLiddle)
- (pdf/PDFRenderer.java) Add new addFilledRect method to make it possible to
draw filled rectangles without any stroke in PDF; in doFrame, use rectangles
instead of lines for borders to eliminate pixel errors (KLease)
- (pdf/PDFRenderer.java) added initial impl of text painter that uses pdf fonts
rather than stroking (KLiddle)
- (pdf/PDFRenderer.java) workaround for a bug in Acrobat Reader where text
may disappear or be placed in the wrong position (KLiddle)
- (pdf.fonts.LazyFont.java) adds support for lazy loading of fonts
saves some cpu, memory (SASAKI Suguru <s-sasaki@hkg.odn.ne.jp>)

*** Package org.apache.fop.render.ps:
New addition: postscript renderer
Submitted by: Jeremias Maerki <jeremias.maerki@outline.ch>
- (PSGraphics2D.java, PSRenderer.java) added support for rendering SVG
graphics to ps, not fully functional (KLiddle)

*** Package org.apache.fop.svg:
- (PDFDocumentGraphics2D.java) fixes PDFDoc to work with changed interface;
added the start of svg linking; should handle colour space a bit better;
writes fonts to resources in PDFDocument; sets up the font state if not using
strokes for text (KLiddle)
- (PDFGraphics2D.java) Handles the graphics device better. (Kliddle)
Also handles the alpha transparency better, at least for white backgrounds
it works properly (Thomas E Deweese <thomas.deweese@kodak.com>)
- (PDFGraphics2D.java) should handle colour space a bit better;
writes fonts to resources in PDFDocument; added initial impl of text painter
that uses pdf fonts rather than stroking (KLiddle)
- (PDFTextPainter.java) should handle colour space a bit better; writes fonts
to resources in PDFDocument; added initial impl of text painter that uses pdf
fonts rather than stroking (KLiddle)
- (PDFTranscoder.java) updated to new batik interface (KLiddle); added the
start of svg linking; gets the xml parser class name properly (KLiddle)
- (SVGElement.java) sets the context url properly (with baseDir)
- (SVGObj.java, XMLObj.java) allows better for other xml data (KLiddle)
- (SVGUtilities.java) a utility file for creating some svg things (Kliddle)

*** Testing and Support
- (tools.anttasks.Fop.java) handles baseDir (with a capital D) properly as
suggested by Anthony Tagunov <atagunov@nnt.ru> (KLiddle)
- (tools.anttasks.RunTest.java) added support for easily using w3c testsuite
for build target test (KLiddle)

==============================================================================
Done since 0.18 release

*** Building
- improvements and fixes to build.xml (ASandstrom,KCampbell)

*** General
- Changes to support Batik (KLiddle)
{ FOP now uses Batik to render svg
This is handled for awt - using batik to render to a graphic
and pdf.
Pdf still requires better image support.
The elements and properties are generated from the svgelements.xml
document.
The version of batik is 17/05/2001 cvs. }
- memory buffering (Seshadri G.K.)

*** Examples
- Added Norwegian hyphenation based on Rune Kleveland's original
nohyphb.tex TeX patterns from the ispell-norsk-2.0 package (TEngvig)
adds Danish text (Lars Michael Johnsen)
- fixed up fills and borders for better appearance (KLiddle)
- Fixed basic-link horizontal position with justification turned on. (KCampbell)
- add border-collapse property (KLease)
- Added CID Font example (KCampbell)

*** Hyphenation
- corrected danish hyphenation (Carlos Villegas)
- adds Danish hyphenation file (Carlos Villegas)
- Added Norwegian hyphenation based on Rune Kleveland's original
nohyphb.tex TeX patterns from the ispell-norsk-2.0 package (TEngvig)
- Hyphenation patterns for russian (TEngvig)

*** codegen
- The elements and properties are generated from the svgelements.xml
document. (KLiddle)

*** Package org.apache.fop.apps:
- support for XMLRenderer (ASandstrom)
- Removed uses of System.out where throwing a FOPException should suffice.
Refactored code to throw FOPExceptions so embedding FOP wont' cause app
server JVMs to exit. (KCampbell)
- adding -text and -pcl options to help text (FJannidis)
- sets baseDir to a URL string rather than a file path string (KLiddle)

*** Package org.apache.fop.datatypes:
- New datatype to represent the property border-separation (KLease)

*** Package org.apache.fop.fo:
- fixed a couple of problems when placing foreign objects near
page break (KLiddle)
- Support for LengthPair property type (KLease)
- restored support for external svg images (KLiddle)

*** Package org.apache.fop.fo.flow:
- inlining of images (ASandstrom, Seshadri G.K.)
- footnote height problem fix (KLiddle)
- fixed a couple of problems when placing foreign objects near
page break (KLiddle)
- added support for 'number-columns-repeated' (G. Pretterhofer)
- fixes a null pointer ex if area is removed before creating area (KLiddle)
- footnote height/id reference problem fixes (KLiddle)
- Fix body positioning; remove widow and orphan handling for rows (KLease)
- Make borders closer to CR spec (KLease)
- Improves cell borders when border-collapse=collapse (the default). Note that
this doesn't implement the full CR, but it's a big improvement and will handle
many common cases. (KLease)
- Stop tables from breaking too early, but make sure that all cells are
composed with the same maxHeight and that absolute Height is set correctly.
In TableRow.java, remove old commented out stuff and put back space-before
(for now) and fix a potential bug involving space-before. (KLease)
- Overflows may cause a row to be re-laid out, need to skip cell content
that has already been processed. (AWelch)
- Put back background on table-column and table-cell (KLease)
- increasing padding problem fix (KLiddle)
- Each column in the row should start with the same height available. (AWelch)
- For borders to be drawn properly on overflowed rows must process all
children. (AWelch)
- Use Constants values. (KLease)

*** Package org.apache.fop.fo.pagination:
- running page num ctr now instance variable for servlet use (KLiddle)
- Made logging go to the same stream (out) for pages and the newline
after a page sequence. The newline was previously going to the err stream.
(KCampbell)

*** Package org.apache.fop.fonts:
- Patch from westbay@seaple.icc.ne.jp to use unicode escape char instead of
pound sign because it was interpreted as an invalid double byte char in
Japanese locale (ja_JP.EUC) and wouldn't compile. (TEngvig)
- Fixes a signedness bug in handling cmaps that caused some fonts to be
invalid. (TEngvig)
- Some fonts contains malformed composite glyphs which used to make fop crash.
This adds an errormessage and tries to embed the font without the composite
glyph. (TEngvig)
- Made some tables in the TTF embedding optional to be compatible with more
fonts. This adheres to the TrueType spec, and makes the MS OpenType
extras optional. (KCampbell)
- Bugfix for font headers with long datatype (KCampbell)

*** Package org.apache.fop.fonts.apps:
- Fixes NumberFormatExceptions when reading .pfm files with kerning values.
(TEngvig)

*** Package org.apache.fop.image[.analyser]:
- now passes in url string to the analyser; some readers may need the url
eg. svg document creator (KLiddle)
- inlining of images (ASandstrom, Seshadri G.K.)
- restored support for external svg images (KLiddle)
- gives SVGReader the correct size (KLiddle)

*** Package org.apache.fop.layout:
- Fix table breaking bug (KLease)
- (AreaContainer) Remove offset of X and Y position by border and
padding (KLease)
- (FontInfo, FontState) Refactored FontState so it doesn't do excessive font
lookups per character. (KCampbell)
- (LineArea) Moved mapping from character to cid from LineArea to PDFRenderer.
This fixes bug no 1681 and other issues with wrong characters being displayed
when using CID fonts. (TEngvig)
- (LineArea) vertical align amount modified (KLiddle)
- (LineArea) Fixes hyphenation for CID fonts (TEngvig)
- (basic-link) Fixed basic-link horizontal position with justification
turned on. (KCampbell)

*** Package org.apache.fop.layout.hyphenation:
- Fixed an array out of bounds that caused some combinations of word/pattern
to crash (TEngvig)

*** Package org.apache.fop.layout.inline:
- Fixed basic-link horizontal position with justification turned on. (Campbell)

*** Package org.apache.fop.pdf:
- Changed encoding of CID fonts from customized CMap to predefined Identity-H
encoding. (TEngvig)
- Fixed some bugs in PDF rendering when font embedding fails.
FontDescriptor is now written out anyway to produce a valid PDF
and acrobat reports that the font can't be displayed. (KCampbell)
- Added default producer to fix a bug where the PDF producer is
set to null in the default commandline usage. (KCampbell)
- (PrintRenderer) Correct border positions on absolutely positioned
AreaContainers (fo:block-container) (KLease)

*** Package org.apache.fop.render[.*]:
- ps renderer (JMaerki)
- improved support for XMLRenderer (ASandstrom)
- fixes for -print option (DBradby)
- restored support for external svg images (KLiddle)
- Moved mapping from character to cid from LineArea to PDFRenderer. This
fixes bug no 1681 and other issues with wrong characters being displayed when
using CID fonts. (TEngvig)
- Fix for color carrying over page breaks (ASandstrom)
- Cleaned up renderWordArea. removed unused code. optimized object creation
a little. (KCampbell)
- Fix disappearing text when using text-anchor != start (KLease)
- Fix for using embedded TrueType fonts in SVG. This fix adds the use of
FontState.mapChar to ensure that glyphs used in the SVG document are included
in the embedded font. (TEngvig)
- Fixed some bugs in PDF rendering when font embedding fails.
FontDescriptor is now written out anyway to produce a valid PDF
and acrobat reports that the font can't be displayed. (KCampbell)

*** Package src.org.apache.fop.svg:
- svg handled with batik, supported in pdf, awt and ps
- svg->pdf transcoder, PDFGraphics2D for drawing into pdf
- (PDFDocumentGraphics2D) now supports size setting properly (KLiddle)
- (PDFGraphics2D) fixes a line colouring problem (Liddle)
- (PDFGraphics2D) better svg rendering; stroke style for lines (KLiddle)
- (PDFGraphics2D) now supports size setting properly (KLiddle)
- (SVG) Add viewBox support to svg element. (KLease)

*** Package src.org.apache.fop.tools:
- (TestConverter.java) fixes a problem relating to rendering options for xml
renderer (KLiddle)

test/Testing:
- testing system, for use with the w3c defined testsuite.dtd including our
tests (KLiddle)
- added some simple test files with blocks (KLiddle)
- also a script to create pdf from test suites (KLiddle)

==============================================================================
Done since 0.17 release

- added: improved Fop task for Ant, added basedir attribute [Will Holcomb]
- added: Driver can be reset now [Art Welch]
- added: CID Font support to svg text [Claud Yu]
- added: renders svg to the awt viewer using batik [Keiron Liddle]
- added: start on the PDFGraphics2D for rendering the batik svg to pdf [Keiron Liddle]
- added: a text renderer [Art Welch]
- added: PCL renderer [Art Welch]
- added: a bunch more properties on svg elements [Keiron Liddle]
- added: subset fonts embedding [Tore Engvig]
- added: Dutch hyphenation file [Reinout Verkerk]
- added: Fop is now self-contained (all necessary jar files included) and
         a runnable jar (can be started with java -jar fop.jar) [Kelly Campbell]
- added: support for border and padding shorthand properties [Karen Lease]
- added: use of property manager, new properties handling [Karen Lease]
- added: support for region-start, region-end [Arved Sandstrom]
- added: to migrate FOP to use the svg facilities from Batik in a special cvs branch [Keiron Liddle]
- added: enabling CID keyed truetype fonts; this gives support
         for other encodings besides WinAnsiEncoding (eg japanese, chinese, arabic,
         iso-whatever, etc). Also makes font inclusion easier [Tore Engvig]
- added: new font configuration [Fotis Jannidis]
- added: support for body-start and label-end in lists [Peter S. Housel]
- added: support for non-rotated arcs in svg [Keiron Liddle]
- added: break before and break after for table rows [Keiron Liddle]
- added: error is reported if the number of columns the cells are using is
         different to the number of columns in the table [Keiron Liddle]
- updated: better handling of svg properties using xsl conversion to svgproperties [Keiron Liddle]
- updated: the FOP build to fix the problems of the output location for the
           property code generation. updated ant.jar to version 1.3,
           added all needed jar files [Kelly Campbell]
- changed: cleaned up renderWordArea. removed unused code.
           optimized object creation a   little. [Kelly Campbell]
- changed: refactored FontState so it doesn't do excessive font lookups per character [Kelly Campbell]
- changed: Driver to make embedding Fop easier [Kelly Campbell]
- changed: apps package and commandline usage of Fop [Fotis Jannidis]
- changed: adding a PrintRenderer for all print oriented renderers [Art Welch]
- fixed: problems if calculated leader-length < 0 [Fotis Jannidis]
- fixed: fixes problem with page break after last row of table body [Keiron Liddle]
- fixed: fixed svg placement bug, now puts the image at the correct offset [Keiron Liddle]
- fixed: broken support of jdk 1.1 [Art Welch]
- fixed: xalan 1 support works again, was broken after changes in apps [Kelly Campbell]
- fixed: properly adjusts the max height of table parts, when a footnote is added
         table will not overlap with the footnote [Keiron Liddle]
- fixed: hexadecimal escape sequences in dutch hyphenation file converted
         to iso-latin-1 [Carlos Villegas]
- fixed: the typos in the fonts example in the userconfig.xml
         and optimized conversions to String in TTFReader and use of StringBuffer [Alain Fagot]
- fixed: added border style to relevant border so that borders show up [Keiron Liddle]
- fixed:  put text-anchor in the correct place [Keiron Liddle]
- fixed: InstreamForeignObject checks for no more room in block area [Keiron Liddle]
- fixed: false border rendering for PCL renderer [Art Welch]
- fixed: added default producer to fix a bug where the PDF producer is set to null in the default
         commandline usage. [Kelly Campbell]
- fixed: Made logging go to the same stream (out) for pages and the newline after a page
         sequence. The newline was previously going to the err stream. [Kelly Campbell]



Done since 0.16 release

- added: a branch for a Fop version which supports Japanese text
        (not yet part of the main branch) [Satoshi Ishigami]
- added support for text-anchor in svg:text, viewBox in svg:svg [Aaron Optimizer Digulla]
- added: MIF Renderer [G. Seshadri]
- added: vertical-align to text [Keiron Liddle]
- added: support for PDF outlines (aka bookmarks). See the example in
         docs/examples/fo/pdfoutline.fo [Kelly Campbell]
- added: some text rendering optimizations for PDF [Kelly Campbell]
- added: limited support for fo:wrapper [Kelly Campbell]
- added: support in pdfrenderer for using TrueType fonts, and embedding of TrueType
         and Type1 fonts, and support for kerning [Tore Engvig]
- added: further support for complete font handling in pdf renderer [Alain Fagot]
- added: support for fo:footnote, fo:footnote-body [Keiron Liddle]
- added: support for  values of property textdecoration ('overline','linethrough') [Christian Geisert]
- added: support for font-variant="small-caps" [Eric Schaeffer]
- added/changed: organization of build tools / classes  + support for xalan 2 [Kelly Campbell]
- added: italian hyphenation file [Stephane Bline)]
- added: uml diagrams to online docs [Stuart Zakon]
- added: a new faq for fop at http://www.owal.co.uk:8090/ [Alex McLintock]
- refactoring org.apache.fop.layout  [Keiron Liddle]
- changed:  XObject to use the stream default filter list [Kelly Campbell]
- changed: placed svg inline first, part in moving towards proper inline areas [Keiron Liddle]
- fixed: a problem with spaces before and after a body in table
         also properly sets the width of the table to the sum of the columns [Keiron Liddle]
- fixed: handling of orphans, keep problem [Keiron Liddle]
- fixed: handling of column heights properly [Keiron Liddle]
- fixed: bails out if no rows in table body  [Keiron Liddle]
- fixed: list-block spanning a page problem [Keiron Liddle]
- fixed: an off by one error in the end of stream encoding part of ASCII85Filter
         as reported by Alex Cherepanov [Kelly Campbell]
- fixed: Clarified error reported for order of static-content, flow within a
         page-sequence to meet section 6.4.5 of the spec [Kelly Campbell]
- fixed: leader didn't fill rest of line in table of contents [Fotis Jannidis]
- fixed: throws a more useful error if non-row inside table body [Keiron Liddle]
- fixed: duplicate ID bug for tables that flow over a page [Keiron Liddle]
- fixed: empty flow bug [Kai Strackbein]
- fixed: broken support of jdk 1.1 [Peter Housel]

Done since 0.15 release

- added: support for  background color property, column breaks [Arved Sandstrom]
- added: support for xalan 2 in xslt task [Kelly Campbell]
- added: support for the properties table-omit-header-at-break,
         table-omit-footer-at-break, number-columns-spanned (partly), orphans, widows (only for tables) [Keiron Liddle]
- added: support for multi-column and column spanning (column-count, column-gap, span)[Arved Sandstrom]
- added: compression for pdf files, changed output format to OutputStream [Kelly Campbell]
- added: improved handling of compound properties [Karen Lease]
- added: fo:character and property 'character' [Fotis Jannidis]
         (limitation: not included into hyphenation, no Common Margin and Padding support)
- added: vertical alignment for table cell contents [Keiron Liddle]
- added: Finnish hyphenation patterns [Jarno Elovirta]
- added: hyphenation package [Carlos Villegas], integration into Fop [Fotis Jannidis]
- added: interim configuration package [Fotis Jannidis]
- added: FopImage class that uses JAI [Eric Schaeffer] and JAI compile target [Kelly Campbell]
- added: support for rule-style [Fotis Jannidis]
- added: support for fo:table-header, fo:table-footer, and for the following properties
         in tables: keep-with-next, keep-with-previous  [Keiron Liddle]
- updated: svg stuff for the latest java bindings [Keiron Liddle]
- fixed: enhanced error messages for page layout (region names, master) [Norm Walsh]
- fixed: infinite looping bug when TableCell or TableRow is larger than a page [Hani Elabed]
- fixed: corrected the size of the "-" char [Keiron Liddle]
- fixed: check for unnecessary whitespace at end of line [Marcus Crafter]
- fixed: moves table completely to next page if first row doesn't fit into last page [Keiron Liddle]
- fixed: problem where id's where being setup twice for
         table row going over the page  [Kelly Campbell]
- fixed colspanning so that the cell state keeps track of the
        width so far properly [Keiron Liddle]
- fix to allow JDK 1.1 users to compile and use FOP [Mikko Honkala, Art Welch]
- fix: removing duplicate character mappings [Dharamveer Salecha]
- fix: NullPointerException in FopImageFactory [Kelly Campbell]
- fixed: space after's where not being removed if table row was being removed [Keiron Liddle]
- fixed problem with keep-with not storing the correct rows [Keiron Liddle]
- fixed: extra space after was left behind for rows going over a page [Keiron Liddle]

Done since 0.14 release
- added region-name support, refactoring of region, PageSequence,
        PageMasterReference, flow/static [Kelly Campbell, Arved Sandstrom]
- added CommandLine/Driver -d option to output stack traces [Kelly Campbell, Arved Sandstrom]
- added: a new package for image support and analysis [Pankaj Narula]
- added better svg support (linear gradients, radial gradients, css style selectors,
        css colour names, patterns, path curves (except arcs), text tspan and tref, text whitespace
        handling, text outline and fill, switch, images (including external svg images)
        references in external svg documents, svg elements (below top element), symbol element) [Keiron Liddle]
- added large test suite for svg [Keiron Liddle]
- added support for property textdecoration (only value 'underline') [Christian Geisert]
- added support for type 1 fonts [Jeremias Maerki,Alan Fagot]
- added support for compile target jdk 1.1 only [Art Welch]
- added support for  partial borders in block, block-container,
                     table-row, table-column and table-cell [Corinna Hischke]
- redesign of properties handling, support for computed, compound and shorthand properties,
                     supporting docs [Karen Lease]
- redesign of font handling for AWTRenderer [Dorothea Wiarda]
- added: support for leader-alignment, leader-pattern-width, leader-pattern (dots,space) [Fotis Jannidis]
- fixed: unnecessary dependence on jdk 1.2 features [Christian Geisert]
- fixed: unicode problem in UserMessage [Ross Golder]
- fixed: broken buildFOTree [Marcus Holmberg]
- fixed: problems with borders and padding in tables [Corinna Hischke]
- fixed: XMLRenderer, unbalanced " in the produced output [Dorothea Wiarda]
- fixed: renamed: inline-sequence -> inline, simple-link -> basic-link,
                  white-space-treatment -> white-space-collapse [Fotis Jannidis]
- fixed: images were rendered only half size (Mikko Honkala)
- fixed: pdf file in XalanCommandFile explicitly closed [Dharamveer Salecha]
- fixed: lists containing list do not keep their indentation correctly
         over a page boundary [Dorothea Wiarda]

Done since 0.13 release
- pagination updated to 03/27/2000 XSL WD [Arved Sandstrom]
- added support for fo page-number-citation [Mike Crowe, Jordan Naftolin]
- added support for 06/29/2000 SVG WD + W3C Java DOM bindings [Keiron Liddle]
- added image support using Jimi [Eric Schaeffer]
- added support for external and internal simple-links [Jordan Naftolin]
- added support for the fonts Symbol and ZapfDingbats [Fotis Jannidis]
- added a MessageHandler  [Fotis Jannidis]
- fixed table overflow bug [Jordan Naftolin]
- finally fixed postscript printing of generated PDF [Domagoj Cosic]
- removed XTCommandLine from build.xml
- removed PDFOutputHandler from build.xml
- added XalanCommandLine  [Fotis Jannidis]
- added: fo:instream-foreign-object [Keiron Liddle]
- added: goto button in AWT viewer [Stanislav Gorkhover]
- updated: AWT viewer now works again and supports - with some restrictions - the new SVG support [Stanislav Gorkhover]

Done since 0.12.1 release
- using Ant to build Fop instead of make [Giacomo Pati]
- borders, padding and absolute positioning [Jon Smirl]

0.12.1 release
to make the bug fix on XTCommandLine available to non developers
basic support for padding-{top,left,bottom,right} on blocks.
implemented simple-link (don't think it works, though)
XTCommandLine now works again
background color works on list-block
list-blocks can now be in table-cell

Done for 0.12.0 release:

Make sure Makefiles work
Switch to using Status object as return from layout()
Incorporate Eric Schaeffer's fix to tables in static-content
Incorporate Kelly Campell's fixes to GifJpegImage
Incorporate Eric Schaeffer's background colour implementation
  (actually used different approach with background colour as trait)