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1.16.0 release
Signed-off-by: Bryce Harrington <[email protected]>
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‎NEWS

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Release 1.16.0 (2018-10-19 Bryce Harrington <[email protected]>)
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========================================================================
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This new stable release incorporates a number of improvements made in
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the four years since 1.14.0.
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Of particular note is a wealth of work by Adrian Johnson to enhance PDF
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functionality, including restoring support for MacOSX 10.4, metadata,
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hyperlinks, and more.
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Much attention also went into fonts, including new colored emoji glyph
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support, variable fonts, and fixes for various font idiosyncrasies.
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Other noteworthy changes include GLESv3 support for the cairo_gl
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backend, tracking of SVG units in generated SVG documents, and cleanups
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for numerous test failures and related issues in the PDF and Postscript
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backends.
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For a complete log of changes, please see
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https://cairographics.org/releases/ChangeLog.1.16.0
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Features and Enhancements
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-------------------------
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* Add support for OpenGL ES 3.0 to the gl backend.
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* The PDF backend has gained support for a range of widely used
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features, including thumbnails, page labels, metadata, document
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outlines, structured text, hyperlinks, and tags. Tags permit adding
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logical info such as headings, tables, figures, etc. that facilitates
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indexing, accessibility, text reflow, searching, and extraction of the
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tagged items to other software. For details on this new PDF
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functionality, see:
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https://lists.cairographics.org/archives/cairo/2016-June/027427.html
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* Variable font support. Variable fonts are single font files with
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various typography characteristics, such as weight or slant, that users
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of the font can adjust between two points. Effectively this enables a
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single font to behave as multiple fonts.
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* Restore MacOSX 10.4 support. Cairo had dropped 10.4 support when
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moving to the CoreText API. Now we automatically detect which API to
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use via dynamic linking, so can resume supporting this older version
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of MacOSX.
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* Support colored emoji glyphs, stored as PNG images in OpenType fonts.
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* Skia backend is removed
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* Use Reusable streams for forms in Level 3 Postscript.
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* Add CAIRO_MIME_TYPE_EPS mime type for embedding EPS files.
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* Add CCITT_FAX mime type for PDF and PS surfaces
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* svg: add a new function to specify the SVG document unit
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(Bug #90166)
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* Use UTF-8 filenames on Windows
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API Changes
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-----------
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Several new APIs were added. No existing APIs were altered.
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New PDF functionality:
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* cairo_pdf_surface_add_outline
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* cairo_pdf_surface_set_metadata
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* cairo_pdf_surface_set_page_label
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* cairo_pdf_surface_set_thumbnail_size
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* cairo_tag_begin
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* cairo_tag_end
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* CAIRO_STATUS_TAG_ERROR
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New error status items for problems relating to PDF tagging:
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* CAIRO_STATUS_WIN32_GDI_ERROR
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* CAIRO_STATUS_FREETYPE_ERROR
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* CAIRO_STATUS_PNG_ERROR
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New error status items for handling of GDI, libfreetype, and libpng
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errors, respectively.
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Setting up Win32 surfaces for HDC with alpha channels:
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* cairo_win32_surface_create_with_format
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New API for added PDF functionality (see above), and new error
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status item for problems relating to PDF tagging.
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Variable fonts:
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* cairo_font_options_get_variations
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* cairo_font_options_set_variations
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Tracking units in SVG documents:
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* cairo_svg_surface_set_document_unit
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* cairo_svg_surface_get_document_unit
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Dependency Changes
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------------------
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None
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Performance Optimizations
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-------------------------
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None
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Notable Bug Fixes
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-----------------
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* Fix thin lines that don't show up when printing in Inkscape due to
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overly aggressive culling.
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(Bug #77298)
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* Fix playback of recording surfaces into PDF surfaces, where objects
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with negative coordinates were not getting drawn. To address this,
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the coordinate systems for PDF and PS have been changed to match
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cairo's coordinate system. This allows recording surfaces to be
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emitted in cairo coordinates, and results in the same origin being
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used for all operations when using the recording surface XObject.
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Test cases for PDF and PS have also been updated accordingly.
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(Bug #89232)
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* Fix "invalidfont" error on some printers when printing PDFs with
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embedded fonts that have glyphs (such as spaces) with
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num_contours == 0. (Bug #79897)
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* Fix missing glyphs such as thin dashes, which get scaled to 0 in
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userspace and thus have their drawing operations culled. (Bug #94615)
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* Fix other oddities caused by variously idiosyncratic fonts.
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* Fix a data race in freed_pool discovered by Firefox's cairo usage.
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The patch adads atomic int load and store functions, with relaxed
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memory ordering. (Bug #90318)
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* Handle SOURCE and CLEAR operators when painting color glyphs.
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(Bug #102661)
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* Fix falling back to system font with PDFs using certain embedded
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fonts, due to truncated font names.
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(Bug #103249)
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* Prevent curved strokes in small ctms from being culled from vector
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surfaces
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(Bug #103071)
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* Fix assertion hit with PDFs using Type 4 fonts rendered with user
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fonts, due to error when destroying glyph page.
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(Bug #103335)
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* Prevent invalid ptr access for > 4GB images.
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(Bug #98165)
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* pdf: Fix internal links pointing to other pages, by pre-calculating
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page heights so that link positions can be calculated more accurately.
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* Fix error reporting in the xcb backend if fallback fails. Instead of
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returning NULL when the X11 server can't do some operation, return a
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surface in an error state.
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* Clarify documentation regarding device scale inheritance and the units
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used in cairo_surface_create_similar_image.
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(Bug #99094)
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* Call XSync in the xlib backend before setting the error handler to
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ignore errors for certain requests, to make sure all pending errors
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are handled first.
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* Fix regression with text containing space character on Win32.
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(Bug: https://gitlab.freedesktop.org/cairo/cairo/issues/339)
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For a more comprehensive listing of fixed bugs, see the release notes for the
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individual 1.15.x releases.
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Release 1.15.14 (2018-09-19 Bryce Harrington <[email protected]>)
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============================================================================
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We're nearly ready to finalize the 1.16.0 release, so this snapshot

‎cairo-version.h

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#define CAIRO_VERSION_H
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#define CAIRO_VERSION_MAJOR 1
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#define CAIRO_VERSION_MINOR 15
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#define CAIRO_VERSION_MICRO 15
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#define CAIRO_VERSION_MINOR 16
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#define CAIRO_VERSION_MICRO 0
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#endif

‎doc/public/cairo-docs.xml

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<index id="index-1.14" role="1.14">
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<title>Index of new symbols in 1.14</title>
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</index>
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<index id="index-1.16" role="1.16">
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<title>Index of new symbols in 1.16</title>
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</index>
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<xi:include href="language-bindings.xml"/>
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</book>

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