Author: AlbrechtS
Date: 2011-12-10 07:30:07 -0800 (Sat, 10 Dec 2011)
New Revision: 9207
Log:
Updated README.Cairo.txt with FLTK 1.3 changes.
Modified:
branches/branch-3.0/README.Cairo.txt
Modified: branches/branch-3.0/README.Cairo.txt
===================================================================
--- branches/branch-3.0/README.Cairo.txt 2011-12-10 15:28:13 UTC (rev
9206)
+++ branches/branch-3.0/README.Cairo.txt 2011-12-10 15:30:07 UTC (rev
9207)
@@ -1,4 +1,4 @@
-README.Cairo.txt - 2010-10-25 - Cairo rendering support for FLTK
+README.Cairo.txt - 2011-12-10 - Cairo rendering support for FLTK
----------------------------------------------------------------
@@ -11,40 +11,44 @@
2.1 Configuration
2.2 Currently supported features
2.3 Future considerations
- 3 DOCUMENT HISTORY
+ 3 PLATFORM SPECIFIC NOTES
+ 3.1 Linux
+ 3.2 Windows
+ 3.3 Mac OSX
+ 4 DOCUMENT HISTORY
- iINTRODUCTION
-===============
+ INTRODUCTION
+==============
Cairo is a software library used to provide a vector graphics-based,
device-independent API for software developers. It is designed to provide
primitives for 2-dimensional drawing across a number of different
-wbackends. Cairo is designed to use hardware acceleration when available.
+backends. Cairo is designed to use hardware acceleration when available.
CAIRO SUPPORT FOR FLTK 1.3
-=============================
+============================
It is now possible to integrate cairo rendering in your fltk application
more easily and transparently.
In 1.3, we provide minimum support for Cairo,
-In particular, no "total" cairo rendering layer support is achieved,
+in particular, no "total" cairo rendering layer support is achieved,
as in fltk2.
Configuration
---------------
-All the changes are *inactive* as long as the new configuration
+All the changes are *inactive* as long as the new configuration
option --enable-cairo is not added to the configure command.
-For non configure based platforms/ide, the FLTK_HAVE_CAIRO preprocess var.
-has to be defined.
-All configure based build files has now this feature integrated,
+For non configure based platforms/ide, the FLTK_HAVE_CAIRO preprocess
+variable has to be defined.
+All configure based build files have now this feature integrated,
also vc2005 build files have 2 new build modes "Release Cairo" and
"Debug Cairo".
-Others IDE's will be updated progressively.
+Other IDE's will be updated progressively.
Currently supported features
@@ -64,12 +68,12 @@
This feature should be only necessary in the following cases:
- Intensive and almost systematic use of cairo contexts in an fltk
application
- Creation of a new cairo based scheme for fltk ...
- - Other uses of cairo necessiting the flk internals instrumentation
+ - Other uses of cairo necessitating the fltk internal instrumentation
to automatically making possible the use of a cairo context
in any fltk window.
- A new cairo demo that is available in the test subdirectory and has been
- used as a testcase durings the multiplatform tests.
+ used as a testcase during the multiplatform tests.
For more details, please have a look to the doxygen documentation,
in the Modules section.
@@ -91,7 +95,7 @@
*** POST 1.3 potential cairo use:
// Set cr to something you made yourself. This lets you reuse functions
-// that use cr, and also tells fltk that cr is not one of it's own and
+// that use cr, and also tells fltk that cr is not one of its own and
// thus cannot be destroyed or reused for a different window:
void Fl::cairo_make_current(cairo_t*)
@@ -100,12 +104,71 @@
called, it is exactly as though cairo_make_current(window) has been done.
***
-Note that it should be possible to compile so FLTK_HAVE_CAIRO works even if
-FLTK_USE_CAIRO does not, and so that turning on FLTK_USE_CAIRO does not break
any
-programs written for FLTK_HAVE_CAIRO.
+Note that it should be possible to compile so FLTK_HAVE_CAIRO works even
+if FLTK_USE_CAIRO does not, and so that turning on FLTK_USE_CAIRO does not
+break any programs written for FLTK_HAVE_CAIRO.
+ PLATFORM SPECIFIC NOTES
+=========================
+
+The folowing are notes about building FLTK with Cairo support
+on the various supported operating systems.
+
+ 3.1 Linux
+ ---------
+
+ From Greg ([email protected]):
+ To get FLTK 1.3.x (r9204) to build on Centos 5.5, I found that
+ I only needed to install the "cairo-devel" package, ie:
+
+ sudo yum install cairo-devel
+
+ ..and then rebuild fltk:
+
+ make distclean
+ ./configure --enable-cairo
+ make
+
+ If you get this error:
+
+ [..]
+ Linking cairo_test...
+ /usr/bin/ld: cannot find -lpixman-1
+ collect2: ld returned 1 exit status
+ make[1]: *** [cairo_test] Error 1
+
+ ..remove "-lpixman-1" from fltk's makeinclude file, i.e. change this line:
+
+ -CAIROLIBS = -lcairo -lpixman-1
+ +CAIROLIBS = -lcairo
+
+ ..then another 'make' should finish the build without errors.
+ You should be able to then run the test/cairo_test program.
+
+ According to the cairo site, "For Debian and Debian derivatives including
+ Ubuntu" you need to install libcairo2.dev, ie:
+
+ sudo apt-get install libcairo2-dev
+
+ Tested and working with Ubuntu 11.10. Note that this also installs
+ libpixman-1-dev, so that dependencies on this should be resolved as well.
+
+
+ 3.2 Windows
+ -----------
+ TBD
+
+
+ 3.3 Mac OSX
+ -----------
+ TBD
+
+
+
DOCUMENT HISTORY
==================
Dec 20 2010 - matt: restructured document
+Dec 09 2011 - greg: Updates for Centos 5.5 builds
+Dec 10 2011 - Albrecht: Updates for Ubuntu and Debian, fixed typos.
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