[cairo-commit] [cairo-www] src/news
Carl Worth
cworth at freedesktop.org
Tue May 13 12:23:04 PDT 2008
src/news/cairo-1.6.4.mdwn | 269 ----------------------------------------------
1 file changed, 1 insertion(+), 268 deletions(-)
New commits:
commit 2c2c7f2af82f1926a8a1beff243cac5ab30f0a9e
Author: Carl Worth <cworth at freedesktop.org>
Date: Tue May 13 12:23:04 2008 -0700
web commit by olaes75: Great
diff --git a/src/news/cairo-1.6.4.mdwn b/src/news/cairo-1.6.4.mdwn
index 3f36457..d5d6c57 100644
--- a/src/news/cairo-1.6.4.mdwn
+++ b/src/news/cairo-1.6.4.mdwn
@@ -1,268 +1 @@
-[[meta title="cairo 1.6.4 release available"]]
-[[meta date="2008-04-11"]]
-
- From: Carl Worth <cworth at cworth.org>
- Date: Fri, 11 Apr 2008 15:08:04 -0700
- To: cairo-announce at cairographics.org
- CC: gnome-announce-list at gnome.org
- Subject: cairo release 1.6.4 now available
-
- The cairo community is wildly embarrassed to announce the 1.6.4
- release of the cairo graphics library. This release reverts the xlib
- locking change introduced in 1.6.2, (and the application crashes that
- it caused). The community would be glad to sack its current release
- manager and is accepting applications for someone who could do the job
- with more discipline.
-
- We do hope you'll have fun with cairo, and we also hope that the
- recent spike in traffic on the cairo-announce mailing list is now
- officially over.
-
- -Carl
-
- Release 1.6.4 (2008-04-11 Carl Worth <cworth at cworth.org>)
- =========================================================
- A new cairo release 1.6.4 is now available from:
-
- http://cairographics.org/releases/cairo-1.6.4.tar.gz
-
- which can be verified with:
-
- http://cairographics.org/releases/cairo-1.6.4.tar.gz.sha1
- 9d990fe39a125ceb07221623c237cd7015855d5c cairo-1.6.4.tar.gz
-
- http://cairographics.org/releases/cairo-1.6.4.tar.gz.sha1.asc
- (signed by Carl Worth)
-
- Additionally, a git clone of the source tree:
-
- git clone git://git.cairographics.org/git/cairo
-
- will include a signed 1.6.4 tag which points to a commit named:
- 08a804806355d99d7968976d6afb98bbc0f2613d
-
- which can be verified with:
- git verify-tag 1.6.4
-
- and can be checked out with a command such as:
- git checkout -b build 1.6.4
-
- Revert 'add missing locking in cairo-xlib'
- ------------------------------------------
- This change was introduced in cairo 1.6.2, but also introduced a bug
- which causes many cairo-xlib applications to crash, (with a
- segmentation fault inside of XSetClipMask). Instead of attempting
- another fix for the broken fix, the change in 1.6.2 has been
- reverted. The original bug which the change was addressing has been
- present since at least cairo 1.4, so it is not expected that leaving
- this bug unfixed will cause any new problems for applications moving
- from cairo 1.4 to cairo 1.6.
-
- At this point, the code of cairo 1.6.4 differs from cairo 1.6.0 only
- in the fix for the PostScript-printer crashes.
-
- Tweak build to avoid linking with g++
- -------------------------------------
- Cairo 1.6.4 avoids a quirk in automake that was causing the cairo
- library to be linked with g++ and linked against libstdc++ even when
- only C source files were compiled for the library.
-
- Cairo 1.6.4 still includes all the good things from cairo 1.6.0, so
- that announcement is repeated here:
-
- The cairo community is quite pleased to announce the 1.6.0 release of
- the cairo graphics library. This is a major update to cairo, with new
- features and enhanced functionality which maintains compatibility for
- applications written using cairo 1.4, 1.2, or 1.0. We recommend that
- anybody using a previous version of cairo upgrade to cairo 1.6.4.
-
- The most significant new features in this release are dramatically
- improved PDF and PostScript[*] output, support for arbitrary X server
- visuals (including PseudoColor), a new Quartz backend, and a new
- "win32 printing" backend. See below for more details on these and
- other new features.
-
- Have fun with cairo!
-
- -Carl
-
- Summary of changes from cairo 1.4 to 1.6.0
- ==========================================
- [Note: For people following along, there have been no code changes at
- all from the cairo 1.5.20 snapshot to cairo 1.6.0]
-
- New dependency on external pixman library (Thanks, Søren!)
- ----------------------------------------------------------
- As of cairo 1.6, cairo now depends on the pixman library, for which
- the latest release can be obtained alongside cairo:
-
- http://cairographics.org/releases/pixman-0.10.0.tar.gz
-
- This library provides all software rendering for cairo, (the
- implementation of the image backend as well as any image fallbacks
- required for other backends). This is the same code that was
- previously included as part of cairo itself, but is now an external
- library so that it can be shared by both cairo and by the X server,
- (which is where the code originated).
-
- Improved PDF, PostScript, and SVG output (Thanks, Adrian!)
- ----------------------------------------------------------
- Users of the cairo-pdf, cairo-ps, and cairo-svg should see a dramatic
- improvement from cairo 1.2/1.4 to 1.6. With this release there are now
- almost no operations that will result in unnecessary rasterization in
- the PDF and PostScript. Rasterized "image fallbacks" are restricted
- only to minimal portions of the document where something is being
- drawn with cairo that is beyond the native capabilities of the
- document, (this is rare for PDF or SVG, but occurs when blending
- translucent objects for PostScript).
-
- This means that the final output will be of higher quality, and will
- also be much smaller, and therefore will print more quickly. The
- machinery for doing analysis and minimal fallbacks also benefits the
- win32-printing surface described below.
-
- In addition to doing less rasterization, the PostScript and PDF output
- also has several other improvements to make the output more efficient
- and more compatible with specifications.
-
- [*] Note: Just before this release, a bug has been reported that the
- PostScript output from cairo can crash some printers, (so far the
- following models have been reported as problematic Xerox Workcentre
- 7228 or 7328 and Dell 5100cn). We will implement a workaround as soon
- as we can learn exactly what in cairo's output these printers object
- to, (and we could use help from users that have access to misbehaving
- printers). This bug is being tracked here:
-
- Printing some PDFs from evince is crashing our Xerox printer
- http://bugs.freedesktop.org/show_bug.cgi?id=15348
-
- New support for arbitrary X server visuals (Thanks, Keith and Behdad!)
- ----------------------------------------------------------------------
- As of cairo 1.6, cairo should now work with an arbitrary TrueColor or
- 8-bit PseudoColor X server visual. Previous versions of cairo did not
- support these X servers and refused to draw anything. We're pleased to
- announce that this limitation has been lifted and people stuck with
- ancient display systems need no longer be stuck with ancient software
- just because of cairo.
-
- New, supported Quartz backend for Mac OS X (Thanks, Brian and Vladimir!)
- ------------------------------------------------------------------------
- As of cairo 1.6, the cairo-quartz backend is now marked as "supported"
- rather than "experimental" as in previous cairo releases. Its API now
- has guarantees of API stability into future cairo releases, and its
- output quality is comparable to other backends. There have been
- significant improvements to cairo-quartz since 1.4. It now uses many
- fewer image fallbacks, (meaning better performance), and has greatly
- improved text rendering.
-
- New, "win32 printing" backend (Thanks, Adrian and Vladimir!)
- ------------------------------------------------------------
- A new win32-printing surface has been added with an interface very
- similar to the original win32 surface, (both accept an HDC
- parameter). But this new surface should only be called with a printing
- DC, and will result in all drawing commands being stored into a
- meta-surface and emitted after each page is complete. This allows
- cairo to analyze the contents, (as it does with PDF, PostScript, and
- SVG backends), and to do minimal image-based fallbacks as
- necessary. The analysis keeps things as efficient as possible, while
- the presence of fallbacks, (when necessary), ensure the consistent,
- high-quality output expected from cairo.
-
- Robustness fixes (Thanks, Chris!)
- ---------------------------------
- There has been a tremendous number of improvements to cairo's
- robustness. Areas that have been improved include:
-
- * Proper reporting of errors
-
- * Responding correctly to invalid input
-
- * Avoiding integer overflows
-
- * Avoiding memory leaks on error-recovery paths
-
- * Making reference counting thread safe
-
- * Exhaustive testing of memory allocation points
-
- Other fixes (Thanks, everybody!)
- --------------------------------
- Cairo's internal fixed-point representation has been changed from
- 16.16 to 24.8. This has a direct impact on applications as it allows
- much larger objects to be drawn before internal limits in cairo make
- the drawing not work.
-
- The `CAIRO_EXTEND_PAD` mode is now fully supported by surface
- patterns. This mode allows applications to use `cairo_rectangle` and
- `cairo_fill` to draw scaled images with high-quality bilinear filtering
- for the internal of the image, but without any objectionably blurry
- edges, (as would happen with the default `EXTEND_NONE` and cairo_paint).
-
- Rendering with `CAIRO_ANTIALIAS_NONE` has been fixed to be more
- predictable, (previously image rendering and geometry rendering would
- be slightly misaligned with respect to each other).
-
- The reference manual at http://cairographics.org/manual now documents
- 100% of the functions and types in cairo's public API.
-
- API additions
- -------------
- Several small features have been added to cairo with new API functions:
-
- `cairo_format_stride_for_width`
-
- Must be called to compute a properly aligned stride value before
- calling `cairo_image_surface_create_for_data`.
-
- `cairo_has_current_point`
-
- Allows querying if there is a current point defined for the
- current path.
-
- `cairo_path_extents`
-
- Allows querying for path extents, (independent of any fill or
- stroke parameters).
-
- `cairo_surface_copy_page`
- `cairo_surface_show_page`
-
- Allow beginning a new document page without requiring a cairo_t
- object.
-
- `cairo_ps_surface_restrict_to_level`
- `cairo_ps_get_levels`
- `cairo_ps_level_to_string`
- `cairo_ps_surface_set_eps`
-
- Allow controlling the Post PostScript level, (2 or 3), to
- target, as well as to generate Encapsulated PostScript (EPS).
-
- `cairo_quartz_font_face_create_for_cgfont`
-
- Create a quartz-specific `cairo_font_face_t` from a CGFontRef.
-
- `cairo_win32_font_face_create_for_logfontw_hfont`
-
- Create a win32-specific `cairo_font_face_t` from a LOGFONTW and an
- HFONT together.
-
- Thanks, Everyone!
- -----------------
- I've accounted for 32 distinct people with attributed code added to
- cairo between 1.4.14 and 1.6.0, (their names are below). That's an
- impressive number, but there are certainly dozens more that
- contributed with testing, suggestions, clarifying questions, and
- encouragement. I'm grateful for the friendships that have developed as
- we have worked on cairo together. Thanks to everyone for making this
- all so much fun!
-
- Adrian Johnson, Alp Toker, Antoine Azar, Behdad Esfahbod,
- Benjamin Otte, Bernardo Innocenti, Bertram Felgenhauer,
- Boying Lu, Brian Ewins, Carl Worth, Chris Heath, Chris Wilson,
- Claudio Ciccani, Emmanuel Pacaud, Jeff Muizelaar, Jeremy Huddleston,
- Jim Meyering, Jinghua Luo, Jody Goldberg, Jonathan Gramain,
- Keith Packard, Ken Herron, Kouhei Sutou, Kristian Høgsberg,
- Larry Ewing, Martin Ejdestig, Nis Martensen, Peter Weilbacher,
- Richard Hult, Shailendra Jain, Søren Sandmann Pedersen,
- Vladimir Vukicevic
+[[meta title="cairo 1.6.4 release available"]] [[meta date="2008-04-11"]] From: Carl Worth <cworth at cworth.org> Date: Fri, 11 Apr 2008 15:08:04 -0700 To: cairo-announce at cairographics.org CC: gnome-announce-list at gnome.org Subject: cairo release 1.6.4 now available The cairo community is wildly embarrassed to announce the 1.6.4 release of the cairo graphics library. This release reverts the xlib locking change introduced in 1.6.2, (and the application crashes that it caused). The community would be glad to sack its current release manager and is accepting applications for someone who could do the job with more discipline. We do hope you'll have fun with cairo, and we also hope that the recent spike in traffic on the cairo-announce mailing list is now officially over. -Carl Release 1.6.4 (2008-04-11 Carl Worth <cworth at cworth.org>) ========================================================= A new cairo release 1.6.4 is now available from: http://cairographi
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