[cairo-announce] cairo snapshot 1.3.16 (1.4.0 release candidate)
now available
Behdad Esfahbod
behdad at behdad.org
Fri Mar 2 21:38:00 PST 2007
A new cairo snapshot 1.3.16 is now available from:
http://cairographics.org/snapshots/cairo-1.3.16.tar.gz
which can be verified with:
http://cairographics.org/snapshots/cairo-1.3.16.tar.gz.sha1
8c80376b18a58727f03fea05ef191acb19903e01 cairo-1.3.16.tar.gz
http://cairographics.org/snapshots/cairo-1.3.16.tar.gz.sha1.asc
(signed by Behdad Esfahbod)
Additionally, a git clone of the source tree:
git clone git://git.cairographics.org/git/cairo
will include a signed 1.3.16 tag which points to a commit named:
b3e1fd8c1cbfc4db88bec4bb52821ed9380dbb4f
which can be verified with:
git verify-tag 1.3.16
and can be checked out with a command such as:
git checkout -b build 1.3.16
This is the eighth development snapshot in the 1.3 series, and the
release candidate for 1.4.0, that will be released early next week.
It comes just over 3 weeks after the 1.3.14 snapshot.
New API functions
-----------------
A few new public functions have been added to the cairo API since the
1.3.14 snapshot. These include a function to query the current scaled
font:
cairo_get_scaled_font
New functions to query the reference count of all cairo objects:
cairo_get_reference_count
cairo_surface_get_reference_count
cairo_pattern_get_reference_count
cairo_font_face_get_reference_count
cairo_scaled_font_get_reference_count
And new functions to allow the use of user_data with any cairo object,
(previously these were only available on cairo_surface_t and
cairo_font_face_t objects):
cairo_set_user_data
cairo_get_user_data
cairo_pattern_set_user_data
cairo_pattern_get_user_data
cairo_scaled_font_set_user_data
cairo_scaled_font_get_user_data
Usability improvement for PDF/PS/SVG generation
-----------------------------------------------
In previous versions of cairo, generating single-page output with the
cairo-pdf, cairo-ps, or cairo-svg backends required a final call to
cairo_show_page. This was often quite confusing as people would port
functional code from a non-paginated backend and be totally mystified
as to why the output was blank until they learned to add this call.
Now that call to cairo_show_page is optional, (it will be generated
implicitly if the user does not call it). So cairo_show_page is only
needed to explicitly separate multiple pages.
Greatly improved PDF output
---------------------------
We are very happy to be able to announce that cairo-generated PDF
output will now have text that can be selected, cut-and-paste, and
searched with most capable PDF viewer applications. This is something
that was not ever possible with cairo 1.2.
Also, the PDF output now has much more compact encoding of text than
before. Cairo is now much more careful to not embed multiple copies of
the same font at different sizes. It also compresses text and font
streams within the PDF output.
Major bug fixes
---------------
• Fixed radial gradients
The rendering of radial gradients has been greatly improved. In
the cairo 1.2 series, there was a serious regression affecting
radial gradients---results would be very incorrect unless one of
the gradient circles had a radius of 0.0 and a center point within
the other circle. These bugs have now been fixed.
• Fixed dashing
Several fixes have been made to the implementation of dashed
stroking. Previously, some dashed, stroked rectangles would
mis-render and fill half of the rectangle with a large triangular
shape. This bug has now been fixed.
• Fixed transformed images in PDF/PS output
In previous versions of cairo, painting with an image-based source
surface pattern to the PDF or PS backends would cause many kinds
of incorrect results. One of the most common problems was that an
image would be repeated many times even when the user had
explicitly requested no repetition with CAIRO_EXTEND_NONE. These
bugs have now been fixed.
• Eliminate errors from CAIRO_EXTEND_REFLECT and CAIRO_EXTEND_PAD
In the 1.2 version of cairo any use of CAIRO_EXTEND_REFLECT or
CAIRO_EXTEND_PAD with a surface-based pattern resulted in an
error, (cairo would stop rendering). This bug has now been
fixed.
Now, CAIRO_EXTEND_REFLECT should work properly with surface
patterns.
CAIRO_EXTEND_PAD is still not working correctly, but it will now
simply behave as CAIRO_EXTEND_NONE rather than triggering the
error.
New rewrite of quartz backend (still experimental)
--------------------------------------------------
Cairo's quartz backend has been entirely rewritten and is now much
more efficient. This backend is still marked as experimental, not
supported, but it is now much closer to becoming an officially
supported backend. (For people that used the experimental nquartz
backend in previous snapshots, that implementation has now been
renamed from "nquartz" to "quartz" and has replaced the old quartz
backend.)
Documentation improvements
--------------------------
We have added documentation for several functions and types that
were previously undocumented, and improved documentation on other
ones. As of this release, there remain only two undocumented
symbols: cairo_filter_t and cairo_operator_t.
Other bug fixes
---------------
• cairo-svg: Fix bug that was preventing text from appearing in many
viewers
• cairo-ft: Return correct metrics when hinting is off
• Cairo 1.3.14 deadlocks in cairo_scaled_font_glyph_extents or
_cairo_ft_unscaled_font_lock_face
https://bugs.freedesktop.org/show_bug.cgi?id=10035
• cairo crashes in cairo_create_similar if nil surface returned by
other->backend->create_similar
https://bugs.freedesktop.org/show_bug.cgi?id=9844
• evolution crash in _cairo_gstate_backend_to_user()
https://bugs.freedesktop.org/show_bug.cgi?id=9906
• Fix memory leak in rectilinear stroking code
Things not in this release
--------------------------
• Solid-surface-pattern cache: This patch had been applied during
the 1.3.x series, but it was reverted due to some inter-thread
problems it caused. The patch is interesting since it made a big
benefit for text rendering performance---so we'll work to bring a
corrected version of this patch back as soon as possible.
Have fun with a faster, more robust, cairo!
behdad
What is cairo
=============
Cairo is a 2D graphics library with support for multiple output
devices. Currently supported output targets include the X Window
System, win32, and image buffers, as well as PDF, PostScript, and SVG
file output. Experimental backends include OpenGL (through glitz),
Quartz, XCB, BeOS, OS/2, and DirectFB.
Cairo is designed to produce consistent output on all output media
while taking advantage of display hardware acceleration when available
(for example, through the X Render Extension).
The cairo API provides operations similar to the drawing operators of
PostScript and PDF. Operations in cairo including stroking and filling
cubic Bézier splines, transforming and compositing translucent images,
and antialiased text rendering. All drawing operations can be
transformed by any affine transformation (scale, rotation, shear,
etc.).
Cairo has been designed to let you draw anything you want in a modern
2D graphical user interface. At the same time, the cairo API has been
designed to be as fun and easy to learn as possible. If you're not
having fun while programming with cairo, then we have failed
somewhere---let us know and we'll try to fix it next time around.
Cairo is free software and is available to be redistributed and/or
modified under the terms of either the GNU Lesser General Public
License (LGPL) version 2.1 or the Mozilla Public License (MPL) version
1.1.
Where to get more information about cairo
=========================================
The primary source of information about cairo is:
http://cairographics.org/
The latest releases of cairo can be found at:
http://cairographics.org/releases
Snapshots of in-development versions of cairo:
http://cairographics.org/snapshots
The programming manual for using cairo:
http://cairographics.org/manual
Mailing lists for contacting cairo users and developers:
http://cairographics.org/lists
Answers to some frequently asked questions about cairo:
http://cairographics.org/FAQ
Detailed list of changes since 1.3.14
=====================================
Adrian Johnson:
TrueType: Add post table and 3,0 cmap encoding
TrueType: fix bug #9998 - build error with gcc 2.95
PDF/PS: Don't embed multiple copies of the same font
Win32: Fix _cairo_win32_scaled_font_map_glyphs_to_unicode return type
Subsetting: Add check for malloc() error
PDF: Ensure ToUnicode CMap name is unique
Behdad Esfahbod:
[configure] Improve win32 detection
[test/Makefile.am] Document why svg2png and pdf2png use LDADD
[win32] Make win32-surface compile without win32-font
[test] Add test case for bug #7965 to the get-path-extents test
[test] Remove ft-text-vertical-layout-type1 from XFAIL
[PS] Fix rotated image pattern emission by correcting setting the bbox
[test] Remove text-rotate test from XFAIL as the bugs are fixed now
[test] Fix syntax typo in text-rotate
[Makefile.am] Include boilerplate/ in SUBDIRS
[FreeType] Truely return unhinted advance width if metrics hinting is off
[xlib/xcb] Check for same_screen in is_compatible
[test] Add ref image for extend-reflect
[cairo-surface] Do not err on CAIRO_EXTEND_PAD and CAIRO_EXTEND_REFLECT
[PS] Update surface_pattern_supported() from PDF
Support CAIRO_EXTEND_REFLECT on surface patterns
[cairo-pattern] Fall back on cairo_surface_create_similar in _cairo_pattern_acquire_surface_for_surface
[cairo-pattern] Correctly delegate device_transform so tests pass again
[SVG] Use _cairo_pattern_acquire_surface instead of _cairo_surface_acquire_source_image
[surface] Copy device_transform_inverse in _cairo_surface_clone_similar
[test] Increase size of extend-reflect test to see that pattern repeats
[PS/PDF] Accept CAIRO_EXTEND_REFLECT surface patterns natively
[test] Update surface-pattern test to include transformations
[test] Remove non-existing test extend-pad
[PS] Fix surface patterns with transforms
[test] Add a new, XFAIL, extend-pad test
[TODO] Add various TODO items
[SVG] Rename a local variable for clarity
[SVG] Fix warnings
[TODO] More TODO items
[PS] Add note about possible need for fix.
[Makefile.am] Remove ChangeLog.cache-* in distclean
[test] Add tests that show xstep/ystep failures in PS/PDF backends
[PS/PDF] Fix xstep/ystep values for CAIRO_EXTEND_NONE
[test] Add ref images for new tests
[cairo.h] Reorder function prototypes a bit for clarity
[cairo.c] Reorder some function implementations for clarity
[quartz] Remove comment syntax that is recognized by gtkdoc from regular comments
Implement cairo_get_scaled_font()
Slim-hidden cairo_scale()
[doc] Add new APIs to cairo-sections.txt
[paginated] Automatically issue a final cairo_show_page()
[paginated] Also do an automatic show page if nothing ever drawn
[boilerplate/test-paginated] Issue a show_page before writing buffer
Revert the solid-pattern cache
[TODO] Add/remove items
[RELEASING] Add notifying desktop-devel-list
[paginated] Also increase page number in copy_page
[TODO] Add cairo_surface_copy_page()
[xlib] Drop XrmFinalize() stuff. That didn't ever exist in any public X server
[test] Plug a leak in the test suite
[test] Add leak-revealing path to rectilinear-stroke
Fix leak in rectilinear stroking code
[test] Add more valgrind suppressions
[boilerplate] Add correct dependency on libcairo.la
[test] Move .la dependencies around
[PS/PDF] Mark CAIRO_EXTEND_PAD for surface patterns as natively supported
[test] Support passing extra valgrind flags
[NEWS] Fix typos
[doc] Update list of header files to ignore
[doc] Some documentation love
Beautify cairo.h
[doc] Docuemnt all symbols but cairo_filter_t and cairo_operator_t
[doc] Update templates
[NEWS] Add note about documentation improvements
[test] Update list of refrerence images
[ChangeLog.mk] Adapt to latest git-describe output format
[Makefile.am] Check for ChangeLog sanity in release-publish
[test] Include romedalen.png in dist, oops
[RELEASING] Add note about ChangeLog sanity
[configure.in] Increase version to 1.3.16 in preparation for release
Brian Ewins:
[ATSUI] implement load_truetype_table
Carl Worth:
Bump cairo version to 1.3.15 after making the 1.3.14 snapshot
Add radial-gradient test case
Rename radial gradient inner/outer to c1/c2
Fix implementation of radial gradients for inner radius != 0
Fix gradient walker to not reset needlessly
SVG: Support CAIRO_EXTEND_NONE for radial gradients.
Merge branch 'radial-gradient-fixes' into cairo
Implement CAIRO_MUTEX_INIT with memcpy instead of pthread_mutex_init
Cast away a const to quiet a compiler warning.
Cast -1 values to unsigned to quiet the compiler.
Update documentation for cairo_get_scaled_font and cairo_get_font_face
Don't crash if backend->create_similar returns a nil surface
Fix yet another backend (quartz) for the gradient renaming
Add test of cairo_get_* after INVALID_RESTORE to nil-surface
Fix INVALID_RESTORE case to avoid crashes
Fix leak in pdiff lpyramid
Add a couple of missing test cases to .gitignore
Add even more XrmGetFileDatabase leaks to the valgrind suppressions file
Augment cairo_test_init with cairo_test_fini to avoid leak
Fix leak in pattern-getters test (missing cairo_pattern_destroy)
More tightening of test cleanup to avoid valgrind complaints.
Fix leak of an output stream in cairo_type1_font_destroy
Add notes for 1.3.16
Emmanuel Pacaud:
Set overflow to visible for symbols.
Jeff Muizelaar:
Add two new test cases to degenerate-path test
Add a new dashing test
Add a comment about the point choice when capping degenerate paths
Rename has_sub_path to has_initial_sub_path
Fix several issues with dashed stroking code, particularly 'leaky-dash'
Rename tmp to step_length because that is what it actually is.
Use a closed interval when eliminating outliers from performance measurements
Jeff Smith:
Change type of cairo_stroker_t's dash_on from int to cairo_bool_t
Modify how _cairo_stroker_add_caps handles zero-length sub-paths
Minor changes to shorten the stroking code
Add or reword several comments in the stroking code
Clean up some inconsistent spacing in the stroking code
Jinghua Luo:
glitz: fix build error.
Jorn Baayen:
[cairo-pattern] Cache surface for solid patterns
Vladimir Vukicevic:
[quartz] Rename nquartz to quartz
[quartz] rename NQUARTZ -> QUARTZ in defines
[quartz] rename test override images from nquartz to quartz
[quartz] Rename public function parameter from surf -> surface
[quartz] Remove (disabled) support for rendering via AGL/CGGL
[core] Add user_data and reference count getters to all objects
[core] put back REF_COUNT_INVALID to be -1, fix finish
[quartz] Bug 3939 - Fix Quartz backend endianness problem
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