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Restructured the Cairo README a little bit

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git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@8083 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
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Matthias Melcher 2010-12-20 20:20:40 +00:00
parent 7046e8ebcb
commit 9c75059f37
1 changed files with 45 additions and 8 deletions
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README.cairo → README.Cairo.txt
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@ -1,5 +1,31 @@
Cairo Support for fltk 1.3 README.Cairo.txt - 2010-10-25 - Cairo rendering support for FLTK
=========================== ----------------------------------------------------------------
CONTENTS
==========
1 INTRODUCTION
2 CAIRO SUPPORT FOR FLTK 1.3
2.1 Configuration
2.2 Currently supported features
2.3 Future considerations
3 DOCUMENT HISTORY
iINTRODUCTION
===============
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.
CAIRO SUPPORT FOR FLTK 1.3
=============================
It is now possible to integrate cairo rendering in your fltk application It is now possible to integrate cairo rendering in your fltk application
more easily and transparently. more easily and transparently.
@ -7,8 +33,10 @@ 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. as in fltk2.
Configuration:
------------- 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. option --enable-cairo is not added to the configure command.
For non configure based platforms/ide, the HAVE_CAIRO preprocess var. For non configure based platforms/ide, the HAVE_CAIRO preprocess var.
@ -18,8 +46,10 @@ also vc2005 build files have 2 new build modes "Release Cairo" and
"Debug Cairo". "Debug Cairo".
Others IDE's will be updated progressively. Others IDE's will be updated progressively.
The current support consist in :
------------------------------- Currently supported features
------------------------------
- Adding a new Fl_Cairo_Window class permitting transparent and easy - Adding a new Fl_Cairo_Window class permitting transparent and easy
integration of a Cairo draw callback without the need to achieve subclassing. integration of a Cairo draw callback without the need to achieve subclassing.
@ -44,8 +74,9 @@ This function is intended to be used in your overloaded draw() method.
For more details, please have a look to the doxygen documentation, For more details, please have a look to the doxygen documentation,
in the Modules section. in the Modules section.
-----------------------------------------------------------------------
Reminder for potential future considerations Future considerations
-----------------------
From Bill: From Bill:
First there is the HAVE_CAIRO configuration option. This indicates that First there is the HAVE_CAIRO configuration option. This indicates that
@ -72,3 +103,9 @@ called, it is exactly as though cairo_make_current(window) has been done.
Note that it should be possible to compile so HAVE_CAIRO works even if Note that it should be possible to compile so HAVE_CAIRO works even if
USE_CAIRO does not, and so that turning on USE_CAIRO does not break any USE_CAIRO does not, and so that turning on USE_CAIRO does not break any
programs written for HAVE_CAIRO. programs written for HAVE_CAIRO.
DOCUMENT HISTORY
==================
Dec 20 2010 - matt: restructured document