Release 1.18.4 (2025-03-08 Emmanuele Bassi <ebassi@gnome.org>)
==============================================================

A new stable release.

The dependency on LZO has been made optional through a build time
configuration toggle. [!580]

You can build Cairo against a Freetype installation that does not have the
FT_Color type. [#792]

Cairo tests now build on Solaris 11.4 with GCC 14. [!599]

The DirectWrite backend now builds on MINGW 11. [!600]

Thanks to Luca Bacci, the DirectWrite backend now supports font
variations and proper glyph coverage. [#877, !602]

Support for Windows 98 has been removed. The minimum requirement for
Windows is now Vista.

Release 1.18.2 (2024-09-01 Emmanuele Bassi <ebassi@gnome.org>)
==============================================================

A new stable release.

The malloc-stats code has been removed from the tests directory [#640]; the
canonical location for it is: https://github.com/behdad/malloc-stats

Cairo now requires a version of pixman equal to, or newer than, 0.40. [!522]

There have been multiple build fixes for newer versions of GCC [!525, !542];
for MSVC [#808]; for Solaris [!540]; and on macOS 10.7 [#810].

PNG errors caused by loading malformed data are correctly propagated to
callers, so they can handle the case. [!524]

Both stroke and fill colors are now set when showing glyphs on a PDF
surface. [#813]

All the font options are copied when creating a fallback font object. [#819]

When drawing text on macOS, Cairo now tries harder to select the appropriate
font name. [#811]

Cairo now prefers the COLRv1 table inside a font, if one is available. [!537]

Cairo requires a C11 toolchain when building. [!479]

Release 1.18.0 (2023-09-20 Emmanuele Bassi <ebassi@gnome.org>)
==============================================================

The first stable cairo release in five years should be cause for celebration.

All the API added in the 1.17 development cycle is now considered stable, and
will not change.

Many thanks to all the contributors for this release.

The cairo-sphinx tool has been removed; we could not find any instruction on
how to use it, and no user answered our call for help. If you were using
cairo-sphinx, please reach out to the cairo maintainers.

Cairo now implements Type 3 color fonts for PDF. Thanks to Adrian Johnson for
his work on this feature.

Khaled Hosny contributed multiple documentation fixes, to ensure that the
cairo API reference is up to date. Khaled also fixed multiple compiler
warnings generated when building cairo.

The XML surface has been removed; it was disabled by default when building
cairo, and we could not find any downstream distributor that would enable
it.

The Tee surface is now automatically enabled. Downstream distributors of
cairo have been enabling for years it in order to build Firefox.

Fujii Hironori and Adrian Johnson fixed multiple issues with the DWrite
font backend.

John Ralls improved the Quartz surface; mainly, Quartz surfaces now use
the main display ColorSpace, speeding up rendering operations.

Cairo now hides all private symbols by default on every platform; the old
"slim" symbols hack to alias internally used symbols has been dropped, in
favor of using `-Bsymbolic-functions` with toolchains that support it.

Uli Schlachter fixed multiple memory leaks in the code base and test suite,
and helped with many reviews and general maintenance.

Marc Jeanmougin added new API to expose the Pixman dithering filter to cairo
patterns; this is currently implemented only for image surfaces.

Release 1.17.8 (2023-01-30 Emmanuele Bassi <ebassi@gnome.org>)
==============================================================

A new cairo snapshot! And it only took less than one year, this time!

Many thanks to everyone who contributed to cairo, and especially
to (in no particular order):

- Adrian Johnson
- Khaled Hosny
- Behdad Esfahbod
- Matthias Clasen
- Uli Schlachter
- Manuel Stoeckl
- Fujii Hironori
- Tim-Philipp Müller
- Luca Bacci
- Caolán McNamara
- John Ralls

In a continuing effort to reduce the amount of legacy code, and increase
the long-term maintainability of cairo, the following backends have been
removed:

- GL and GLES drawing

Additionally, cairo's Autotools build system has been removed; from now on,
cairo will only support the Meson build system. While the end result should
be identical, further testing is appreciated.

In this snapshot, cairo gained support for rendering COLRv1 fonts, and
rendering SVG and COLRv1 fonts with custom palettes.

Support for macOS and Windows has been improved, with lots of build and bug
fixes.

Lots of safety issues have been fixed, with array bounds checking and
plugging memory leaks, as well as fixes for bugs identified via fuzzying.

This is going to be the last snapshot of the 1.17 development cycle; we only
expect minor bug fixing and improvements until the 1.18.0 release.

Release 1.17.6 (2022-03-18 Emmanuele Bassi <ebassi@gnome.org>)
==============================================================

I spy with my little eye… a cairo snapshot!

First of all, many, many thanks to everyone who contributed to cairo
during this development cycle. A special thank you goes to:

- Adrian Johnson
- Uli Schlachter

for their tireless efforts in ensuring that the lights are still on
in the cairo project.

This snapshot sees the removal of the following backends and platform
support:

- Qt4
- BeOS
- OS/2
- DirectFB
- DRM
- Cogl
- OpenVG

Thanks to all past contributors for their work on them. If you were using
any of these backends then you will need to stick to cairo 1.16.

To offset the removal of the backends above, Adrian Johnson landed the
DWrite font rendering backend on Windows.

There have been multiple improvements in the Quartz backend, courtesy of
John Ralls.

Tim-Philipp Müller has kept the Meson build in top shape.

This snapshot is going to be the **last** release of cairo with the
Autotools build system. The Meson build has seen many improvements and
it is considerably easier to maintain and faster to build.

Release 1.17.4 (2020-11-27 Bryce Harrington <bryce@bryceharrington.org>)
========================================================================

Thank you to the many people who have contributed the large number of
bug fixes and refinements since 1.17.2.

A particularly noteworthy improvement in this release is the addition of
the meson build system as an alternative to autotools.  Autotools is
still used for producing the releases, so will be the default in the
tarball and presumably will still be preferred by distro packagers of
Cairo.  It should be possible to build the release tarball using meson,
but as this is new functionality consider it still a work in progress.
The meson configuration has striven to track the autotools
implementation but be aware there may still be some differences between
the two.

Continuous Integration configurations have been added that enable
testing on a variety of platforms including Fedora, Windows MSVC, etc.
This work has helped in identifying updates and fixes including
adjusting to changes in API calls in dependencies like rsvg and
fontconfig, and to fix platform-specific build issues.

The cogl Cairo backend underwent significant development this cycle.
Cogl provides GPU accelerated drawing support.  The development work
includes implementation of core functionality, performance
optimizations, and stabilization.

Subpixel positioning support allows improved glyph outlines with the
FreeType font backend.

For a complete log of changes, please see

    https://cairographics.org/releases/ChangeLog.1.17.4

[On a personal note, this will be my last release for Cairo.  My Cairo
time availability has been non-existent (particularly this crazy past
year).  The release process is well documented and hopefully will help
whomever picks up the baton from here.]


Release 1.17.2 (2019-01-31 Bryce Harrington <bryce@bryceharrington.org>)
========================================================================
This snapshot provides the new support for writing floating point
formats as 16 bpc PNGs, with support for RGBA128F and RGB96F formats.
This new feature increases Cairo's pixman version requirement to 0.36.0.

Beyond this are a range of bugfixes and some work on establishing CI for
Cairo.

For a complete log of changes, please see

    https://cairographics.org/releases/ChangeLog.1.17.2

API Changes
-----------
None

Dependency Changes
------------------
pixman 0.36.0


Release 1.16.0 (2018-10-19 Bryce Harrington <bryce@bryceharrington.org>)
========================================================================
This new stable release incorporates a number of improvements made in
the four years since 1.14.0.

Of particular note is a wealth of work by Adrian Johnson to enhance PDF
functionality, including restoring support for MacOSX 10.4, metadata,
hyperlinks, and more.

Much attention also went into fonts, including new colored emoji glyph
support, variable fonts, and fixes for various font idiosyncrasies.

Other noteworthy changes include GLESv3 support for the cairo_gl
backend, tracking of SVG units in generated SVG documents, and cleanups
for numerous test failures and related issues in the PDF and Postscript
backends.

For a complete log of changes, please see

    https://cairographics.org/releases/ChangeLog.1.16.0

Features and Enhancements
-------------------------
* Add support for OpenGL ES 3.0 to the gl backend.
* The PDF backend has gained support for a range of widely used
  features, including thumbnails, page labels, metadata, document
  outlines, structured text, hyperlinks, and tags.  Tags permit adding
  logical info such as headings, tables, figures, etc. that facilitates
  indexing, accessibility, text reflow, searching, and extraction of the
  tagged items to other software.  For details on this new PDF
  functionality, see:
    https://lists.cairographics.org/archives/cairo/2016-June/027427.html
* Variable font support.  Variable fonts are single font files with
  various typography characteristics, such as weight or slant, that users
  of the font can adjust between two points.  Effectively this enables a
  single font to behave as multiple fonts.
* Restore MacOSX 10.4 support.  Cairo had dropped 10.4 support when
  moving to the CoreText API.  Now we automatically detect which API to
  use via dynamic linking, so can resume supporting this older version
  of MacOSX.
* Support colored emoji glyphs, stored as PNG images in OpenType fonts.
* Skia backend is removed
* Use Reusable streams for forms in Level 3 Postscript.
* Add CAIRO_MIME_TYPE_EPS mime type for embedding EPS files.
* Add CCITT_FAX mime type for PDF and PS surfaces
* svg: add a new function to specify the SVG document unit
  (Bug #90166)
* Use UTF-8 filenames on Windows


API Changes
-----------
Several new APIs were added.  No existing APIs were altered.

New PDF functionality:

  * cairo_pdf_surface_add_outline
  * cairo_pdf_surface_set_metadata
  * cairo_pdf_surface_set_page_label
  * cairo_pdf_surface_set_thumbnail_size
  * cairo_tag_begin
  * cairo_tag_end
  * CAIRO_STATUS_TAG_ERROR

New error status items for problems relating to PDF tagging:

  * CAIRO_STATUS_WIN32_GDI_ERROR
  * CAIRO_STATUS_FREETYPE_ERROR
  * CAIRO_STATUS_PNG_ERROR

    New error status items for handling of GDI, libfreetype, and libpng
    errors, respectively.


Setting up Win32 surfaces for HDC with alpha channels:

  * cairo_win32_surface_create_with_format

    New API for added PDF functionality (see above), and new error
    status item for problems relating to PDF tagging.

Variable fonts:

  * cairo_font_options_get_variations
  * cairo_font_options_set_variations

Tracking units in SVG documents:

  * cairo_svg_surface_set_document_unit
  * cairo_svg_surface_get_document_unit



Dependency Changes
------------------
None


Performance Optimizations
-------------------------
None


Notable Bug Fixes
-----------------
* Fix thin lines that don't show up when printing in Inkscape due to
  overly aggressive culling.
  (Bug #77298)
* Fix playback of recording surfaces into PDF surfaces, where objects
  with negative coordinates were not getting drawn.  To address this,
  the coordinate systems for PDF and PS have been changed to match
  cairo's coordinate system.  This allows recording surfaces to be
  emitted in cairo coordinates, and results in the same origin being
  used for all operations when using the recording surface XObject.
  Test cases for PDF and PS have also been updated accordingly.
  (Bug #89232)
* Fix "invalidfont" error on some printers when printing PDFs with
  embedded fonts that have glyphs (such as spaces) with
  num_contours == 0.  (Bug #79897)
* Fix missing glyphs such as thin dashes, which get scaled to 0 in
  userspace and thus have their drawing operations culled.  (Bug #94615)
* Fix other oddities caused by variously idiosyncratic fonts.
* Fix a data race in freed_pool discovered by Firefox's cairo usage.
  The patch adads atomic int load and store functions, with relaxed
  memory ordering.  (Bug #90318)
* Handle SOURCE and CLEAR operators when painting color glyphs.
  (Bug #102661)
* Fix falling back to system font with PDFs using certain embedded
  fonts, due to truncated font names.
  (Bug #103249)
* Prevent curved strokes in small ctms from being culled from vector
  surfaces
  (Bug #103071)
* Fix assertion hit with PDFs using Type 4 fonts rendered with user
  fonts, due to error when destroying glyph page.
  (Bug #103335)
* Prevent invalid ptr access for > 4GB images.
  (Bug #98165)
* pdf: Fix internal links pointing to other pages, by pre-calculating
  page heights so that link positions can be calculated more accurately.
* Fix error reporting in the xcb backend if fallback fails.  Instead of
  returning NULL when the X11 server can't do some operation, return a
  surface in an error state.
* Clarify documentation regarding device scale inheritance and the units
  used in cairo_surface_create_similar_image.
  (Bug #99094)
* Call XSync in the xlib backend before setting the error handler to
  ignore errors for certain requests, to make sure all pending errors
  are handled first.
* Fix regression with text containing space character on Win32.
  (Bug: https://gitlab.freedesktop.org/cairo/cairo/issues/339)

For a more comprehensive listing of fixed bugs, see the release notes for the
individual 1.15.x releases.


Release 1.15.14    (2018-09-19 Bryce Harrington <bryce@bryceharrington.org>)
============================================================================
We're nearly ready to finalize the 1.16.0 release, so this snapshot
can be considered a beta for 1.16.

The most notable change this release is a performance optimization for
windows, discussed below.  Other than that, much of the development
focus was on final polish and stability as we prepare for 1.16.

Some attention went into getting the testsuite passing at least for the
image backend.  The Cairo testsuite depends on external software like
Pixman, and changes in the rendering behavior of these dependencies
change test behavior, leading to false positives.

Results from the Coverity static testing tool were also reviewed.  Most
of the issues flagged were false positives, but there were several
legitimate problems found and fixed.

For a complete log of changes, please see

    https://cairographics.org/releases/ChangeLog.1.15.14

Features and Enhancements
-------------------------
* Add more FreeeType font color conversions to support COLR/CPAL
* Update test reference images against current pixman

API Changes
-----------
None

Dependency Changes
------------------
None

Performance Optimizations
-------------------------
Vasily Galkin introduced a Win32 performance optimization for
CAIRO_OPERATOR_SOURCE when copying data from a backbuffer to an argb32
surface corresponding to a Win32 DC.  With this, argb32 drawing should
perform as fast as typical dibsection-buffered GDI drawing.  See the
Cairo mailing list for April 2018 for data and discussion of the
performance improvements.


Bug Fixes
---------
* Fix crash when rendering Microsoft's Segoe UI Emoji Regular font.
* Fix build breakage with glesv3 enabled due to non-existant glesv3.pc.
* Fix memory leaks found by Coverity
* Fix incorrect null ptr handling found by Coverity
* Fix test compilation when font-config is disabled
* Use _cairo_malloc instead of malloc (Bug #101547) (CVE-2017-9814)
* Fix assertion failure in the freetype backend (Bug #105746)


Release 1.15.12    (2018-04-04 Bryce Harrington <bryce@osg.samsung.com>)
========================================================================
The main focus for this release is the addition of Variable Font
support.  Variable fonts are single font files with various typography
characteristics, such as weight or slant, that users of the font can
adjust between two points.  Effectively this enables a single font to
behave as multiple fonts.

The Skia backend is disabled in this release, due to severe bitrot, and
will be removed in future releases.  Contact the cairo team if you have
a need of this backend.

For a complete log of changes, please see

    https://cairographics.org/releases/ChangeLog.1.15.12

Features and Enhancements
-------------------------
* Variable font support
* Skia backend is disabled

API Changes
-----------
* cairo_font_options_get_variations() and
  cairo_font_options_set_variations() are added.

Dependency Changes
------------------
None

Performance Optimizations
-------------------------
None

Bug Fixes
---------
* Fix errors in csi-trace --help and --version options
* Fix a 'memory leak' in the image compositor, with
  pixman_glyph_cache_t.
* Fix access of uninitialized memory found by valgrind
  (Bug #91271)
* Fix improper initialization of memory in
  _cairo_ft_font_face_create_for_pattern()
  (Bug #105084)
* Fix multi-monitor virtual desktop with negative coords on Win32
  (Bug #100793)
* Fix issues occurring with older FreeType versions.


Release 1.15.10    (2017-12-07 Bryce Harrington <bryce@osg.samsung.com>)
========================================================================
This release adds GLESv3 support to the cairo_gl backend, adds
tracking of SVG units in generated svg documents, and cleans up numerous
test failures and related issues in the PDF and Postscript backends.

For a complete log of changes, please see

    https://cairographics.org/releases/ChangeLog.1.15.10

Features and Enhancements
-------------------------
* Add support for OpenGL ES 3.0 to the gl backend.
* Use Reusable streams for forms in Level 3 Postscript.
* Add CAIRO_MIME_TYPE_EPS mime type for embedding EPS files.
* Add CCITT_FAX mime type for PDF and PS surfaces
* svg: add a new function to specify the SVG document unit
  (Bug #90166)
* Use UTF-8 filenames on Windows

API Changes
-----------
* cairo_svg_surface_set_document_unit() and
  cairo_svg_surface_get_document_unit()

Dependency Changes
------------------
None

Performance Optimizations
-------------------------
None

Bug Fixes
---------
* Fix regression in gles version detection
* Fix undefined-behavior with integer math.
* Handle SOURCE and CLEAR operators when painting color glyphs.
  (Bug #102661)
* Convert images to rgba or a8 formats when uploading with GLESv2
* Use _WIN32 instead of windows.h to check for windows build.
* Fix sigabrt printing documents with fonts lacking the mandatory .nodef
  glyph.
  (Bug #102922)
* Prevent curved strokes in small ctms from being culled from vector
  surfaces
  (Bug #103071)
* Fix painting an unbounded recording surface with the SVG backend.
* Fix falling back to system font with PDFs using certain embedded
  fonts, due to truncated font names.
  (Bug #103249)
* Fix handling of truetype fonts with excessively long font names
  (Bug #103249)
* Fix race conditions with cairo_mask_compositor_t
  (Bug #103037)
* Fix build error with util/font-view
* Fix assertion hit with PDFs using Type 4 fonts rendered with user
  fonts, due to error when destroying glyph page.
  (Bug #103335)
* Set default creation date for PDFs
* Prevent invalid ptr access for > 4GB images.
  (Bug #98165)
* Prevent self-copy infinite loop in Postscript surface.
* Fix padded image crash in Postscript surface.
* Fix annotation bugs in PDFs and related memory leaks
* Fix test failures and other assorted issues in ps and pdf code.
* Fix code generation when using GCC legacy atomic operations
  (Bug #103559)
* Fix various compilation warnings and errors.
* Fix various distcheck errors with private symbols, doxygen formatting,
  etc.

Release 1.15.8     (2017-08-29 Bryce Harrington <bryce@osg.samsung.com>)
========================================================================
This small snapshot provides new colored emoji glyph support, and a
handful of minor fixes.

For a complete log of changes, please see

    https://cairographics.org/releases/ChangeLog.1.15.8

Features and Enhancements
-------------------------
* Support colored emoji glyphs, stored as PNG images in OpenType fonts.


API Changes
-----------
None

Dependency Changes
------------------
None

Performance Optimizations
-------------------------
None

Bug Fixes
---------

* pdf: Fix internal links pointing to other pages, by pre-calculating
  page heights so that link positions can be calculated more accurately.

* image: Fix crash on negative lengths

* win32: Fix initialization of mutexes for static builds

* pdf: Don't emit /PageLabel dict when no labels defined

* font: Fix color font loading on big-endian systems

* font:	Fix color font support infinite-loop with empty glyphs

* Fix off by one check in cairo-image-info.c



Release 1.15.6     (2017-06-13 Bryce Harrington <bryce@osg.samsung.com>)
========================================================================
This new snapshot incorporates changes over the past half-year since the
1.15.4 snapshot, including all the fixes from the 1.14 release series.

The PDF code continues to be enhanced, and we're restored MacOSX 10.4
support.  Font-related fixes and improved error handling for X round out
the release.

For a complete log of changes, please see

    https://cairographics.org/releases/ChangeLog.1.15.6


Features and Enhancements
-------------------------
* Detect if variable fonts have	synthesized bold/italic	or non-default
  variants, and	     use a fallback font where needed.

* Restore MacOSX 10.4 support.	    Cairo had dropped 10.4 support when
  moving to the CoreText API.  Now we automatically detect which API to
  use via dynamic linking, so can resume supporting this older version
  of MacOSX.


API Changes
-----------
None

Dependency Changes
------------------
None

Performance Optimizations
-------------------------
None

Bug Fixes
---------
* Fix error reporting in the xcb backend if fallback fails.  Instead of
  returning NULL when the X11 server can't do some operation, return a
  surface in an error state.

* Call XSync in the xlib backend before setting the error handler to
  ignore errors for certain requests, to make sure all pending errors
  are handled first.

* Fix text-glyph-range for quartz-font.	 Use 0xFFFF instead of 0 for
  invalid index	       tracking.

* Fix handling of Supplementary Multilingual Plane (SMP) Unicode
  characters in quartz-font.

* Fix various issues in the drm backend	including updating API usage and
  general code cleanup.

* Clarify documentation	regarding device scale inheritance and the units
  used in cairo_surface_create_similar_image.
  Bug #99094.


Release 1.15.4     (2016-12-9 Bryce Harrington <bryce@osg.samsung.com>)
=======================================================================
This new snapshot incorporates changes over the past year since the
1.15.2 snapshot, including all the fixes from the 1.14 release series.

Of particular note in this snapshot is a wealth of work by Adrian
Johnson to enhance PDF support, as well as numerous bug fixes provided
by him and other contributors.

For a complete log of changes since the last release, please see:

    https://cairographics.org/releases/ChangeLog.1.15.4

Features
--------
* The PDF backend has gained support for a range of widely used
  features, including thumbnails, page labels, metadata, document
  outlines, structured text, hyperlinks, and tags.  Tags permit adding
  logical info such as headings, tables, figures, etc. that facilitates
  indexing, accessibility, text reflow, searching, and extraction of the
  tagged items to other software.  For details on this new PDF
  functionality, see:

    https://lists.cairographics.org/archives/cairo/2016-June/027427.html


API Changes
-----------

  cairo_win32_surface_create_with_format

    Added a cairo API to set up Win32 surfaces for HDC with alpha channels.

  cairo_pdf_surface_add_outline
  cairo_pdf_surface_set_metadata
  cairo_pdf_surface_set_page_label
  cairo_pdf_surface_set_thumbnail_size
  cairo_tag_begin
  cairo_tag_end
  CAIRO_STATUS_TAG_ERROR

    New API for added PDF functionality (see above), and new error
    status item for problems relating to PDF tagging.

  CAIRO_STATUS_WIN32_GDI_ERROR
  CAIRO_STATUS_FREETYPE_ERROR
  CAIRO_STATUS_PNG_ERROR

    New error status items for handling of GDI, libfreetype, and libpng
    errors, respectively.

Dependency Changes
------------------
None

Performance Optimizations
-------------------------
None

Bug Fixes
---------
* Bug fixes from 1.15.2 (see the 1.15.2 NEWS for details)

* Fix playback of recording surfaces into PDF surfaces, where objects
  with negative coordinates were not getting drawn.  To address this,
  the coordinate systems for PDF and PS have been changed to match
  cairo's coordinate system.  This allows recording surfaces to be
  emitted in cairo coordinates, and results in the same origin being
  used for all operations when using the recording surface XObject.
  Test cases for PDF and PS have also been updated accordingly.
  (Bug #89232)

* Fix "invalidfont" error on some printers when printing PDFs with
  embedded fonts that have glyphs (such as spaces) with
  num_contours == 0.  (Bug #79897)

* Fix missing glyphs such as thin dashes, which get scaled to 0 in
  userspace and thus have their drawing operations culled.  (Bug #94615)

* Fix other oddities caused by variously idiosyncratic fonts.

* Fix deadlock when destruction of a scaled font indirectly triggers
  destruction of a second scaled font, causing the global cache to be
  locked twice.  (Bug #93891)

* Fix X errors reported to applications when shmdt() is called before
  the Attach request is processed, due to missing xcb and xlib calls.

* Fix random failure in record-paint-alpha-clip-mast test case, caused
  by an incorrect assumption that a deferred clear can be skipped.
  (Bug #84330)

* Fix crash when dealing with an XShmGetImage() failure, caused by a
  double free in _get_image_surface().  (Bug #91967)

* Fix invalid execution of ASCII85 data by the PS interpreter that the
  image operator didn't use, by flushing the extraneous data after
  drawing the image.  (Bug #84811)

* Fix decoding of Adobe Photoshop's inverted CMYK JPEG files in PDF
  export.

* Fix unbounded surface assertion in win32-print code.

* Fix a data race in freed_pool discovered by Firefox's cairo usage.
  The patch adads atomic int load and store functions, with relaxed
  memory ordering.  (Bug #90318)

* Cleanup debugging text sent to stdout instead of log.  (Bug #95227)

* Fix build issue when using non-GNU strings utility.  (Bug #88639)

* Fix build of cairo modules as regular modules, not as versioned shared
  libraries.  (Bug #29319)

* Fix build on win32 using gcc 5.4.

* Fix build of script backend to require zlib.

* Update test suite reference images using Debian Jessie 64-bit and
  poppler current as of June, 2016.

* Various improvements to documentation and tests, compiler warning
  fixes, and an assortment of code refactoring and cleanup.


Release 1.15.2     (2015-12-10 Bryce Harrington <bryce@osg.samsung.com>)
========================================================================
This release is largely a rollup to include a variety of fixes that
didn't make the cut for the stable 1.14.2 and 1.14.4 releases, as well
as all the fixes from those releases.  Notably this includes a highly
requested new API for Win32 surfaces.

For a complete log of changes since the last release, please see:

    https://cairographics.org/releases/ChangeLog.1.15.2

Features
--------
None

API Changes
-----------

  cairo_win32_surface_create_with_format

    Added a cairo API to set up Win32 surfaces for HDC with alpha channels.

Dependency Changes
------------------
None

Performance Optimizations
-------------------------
None

Bug Fixes
---------
* All the bug fixes from 1.14.2, 1.14.4, and 1.14.6

* Fix xcb/xlib compilation and calls.  Make image boxes behave when SHM
  is not available.

* Fix various issues with printing and transparent images on Win32.

* Fix thin lines that don't show up when printing in Inkscape due to
  overly aggressive culling.
  (Bug #77298)

* Fix broken printing via pdf when glyph 0 is used for rendering,
  resulting in missing spaces and letters.
  (Bug #89082)

* Fix crash for certain glyphs in opentype fonts.
  (Bug #91902)

* Fix incorrect rendering of SVG paths with more than one subpath.  If
  more than one trap is passed in then it's guaranteed that the returned
  traps will have their left edge to the left of their right edge, but
  if only one trap is passed in then the function always returns without
  doing anything.
  (Bug #90984)

* Improve rendering with Quartz to better match pixman's blending and
  filtering behavior.


Release 1.14.6    (2015-12-09  Bryce Harrington <bryce@osg.samsung.com>)
========================================================================
Simple bugfix release to fix one Windows issue.

For a complete log of changes since 1.14.4, please see:

    https://cairographics.org/releases/ChangeLog.1.14.6

Features
--------
None

API Changes
-----------
None

Dependency Changes
------------------
None

Performance Optimizations
-------------------------
None

Bug Fixes
---------
* Fix failure on Windows due to reference of the function
  cairo_win32_surface_create_with_format(), which isn't included in the
  1.14.4 release. (Bug #92771)


Release 1.14.4    (2015-10-28  Bryce Harrington <bryce@osg.samsung.com>)
========================================================================
Just in time for Halloween we see another bug-fix release for Cairo.
This brings a few dozen straightforward bug fixes with no API changes.

In addition, this includes a typical assortment of fixes to tests,
cleanup of warnings and memory leaks, correction of misspellings,
updates to documentation, etc.

For a complete log of changes since 1.14.2, please see:
 
    https://cairographics.org/releases/ChangeLog.cairo-1.14.4

Features
--------
None

API Changes
-----------
None

Dependency Changes
------------------
None

Performance Optimizations
-------------------------
None

Bug Fixes
---------
* Avoid appending empty slots to user data arrays.  Fixes a memory
  consumption regression since commit 9341c254a.

* Return a better error (file-not-found) when setting up pango on
  devices where the font files don't have read permissions.

* Fix regression in the font size of canvas text in Inkscape when
  compiled with the Quartz backend.  (Bug #84324)

* Fix _cairo_gl_shader_bind_matrix() to maintain compatibility with
  OpenGL ES 2.0.  Manually transpose the matrix.

* Fix incorrect font descriptor conversion when the font matrix yy is
  negative. (Bug #90538)

* Fix crash when using a complex path for clip and stroke due to
  discarding the intersection exactly at the top edge.
  (Bug #74779)

* Fix cairo_get_locale_decimal_point() on Android

* Fix compilation problem on AIX due to conflicting usage of symbol
  'jmpbuf'.  (Bug #89339)

* Fix broken rendering with XCB due to snapshotting of uploaded part of
  surfaces.  (Bug #67505)

* Fix loss of alpha when copying a mask for a cairo recording surface,
  resulting in a double copy.  (Bugs #73038, #73901)

* Fix incorrect recording of certain paths with script surfaces.
  (Bug #91054)

* Fix typo in definition of MAYBE_WARN in configure script.
  (Bug #89750)

* Fix use of filename variable after it's been freed.
  (Bug #91206)

* Fix out of bounds access when printing pattern.
  (Bug #91266)

* Fix incorrect size calculation in glyph cache unlocking for Cairo GL
  compositor.
  (Bug #91321)

* Fix memory leak in _cairo_gl_pattern_texture_setup()
  (Bug #91537)

* Fix transparent images in win32-print.
  (Bug #91835)

* Fix _put_shm_image_boxes and _put_image_boxes when no SHM available
  with XCB.


Release 1.14.2 (2015-03-09 Bryce Harrington <bryce@osg.samsung.com>)
====================================================================
This release provides collected bug fixes, along with one feature
enhancement for the xcb backend, and a small performance improvement for
fonts.

The running theme of the bug fixes is platform-specific issues, both
build and run-time.  Platforms with fixes include Sparc, AIX, Windows
(mingw), and Windows (MSVC8).  Memory leaks, valgrind issues, and PDF
issues round out our list.

It's come to light that changes in cairo 1.14 resulted in breakage on
MacOS X 10.4.  We've not yet determined whether to fix up the support,
or excise the 10.4-specific code and support only OS X 10.5 or newer.
Meantime, we'll only advertise cairo as working on OS X 10.5.

Features
--------
