1. TkImg, Past – Present - Future
Jan Nijtmans/Paul Obermeier
EuroTcl 2008, june 6

2. Outline How it started: ’94-’97 http://hwr.nici.kun.nl/~miami/
PNG, JPEG, TIFF
Tcl_Obj interface/stubs
transparency
more formats
TEA

3. First: PNG Initial code borrowed (stolen) from: Joel Crisp
only reading/writing from files
added support for PNG user properties
link with zlib

4. Second: JPEG
Started initial implementation, using Tomas Lane’s JPEG library (version 6a)
Later replaced with Tomas Lane’s version.
Support for both libjpeg 6a and 6b

5. Third: TIFF Used libtiff library (Sam Leffner).
Link with zlib and libjpeg

6. Library dependency (Img 1.0)
apr ’97
jpeg
tiff
png
libtiff
libpng
libjpeg
zlib

7. Img 1.1 Animated GIF BMP Postscript (idea stolen from XV)
aug ’97
Animated GIF
BMP
Postscript (idea stolen from XV)
Tcl_Obj (8.0)
more generic code

8. Img 1.2 window format pdf (using ghostscript) full Tcl_Obj
may ’99
window format
pdf (using ghostscript)
full Tcl_Obj
Removed support Tcl < 8.0
byte arrays
last release: 1.2.4
aug. 2000

9. tkImg 1.3 ActiveState: re-organisation of build
aug 2004
ActiveState: re-organisation of build
Removed support Tcl < 8.1
Move to sourceforge.
More formats: xbm, xpm, ico, pcx, sgi, sun, tga.
tkImg 1.3.1??

10. Img 1.4 More formats better builds Remove support Tcl < 8.3
Better test suite
????

11. Applications
Paul Obermeijer