2006-08-08 16:04:54 -07:00
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Release 1.2.2 (2006-08-08 Carl Worth <cworth@cworth.org>)
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=========================================================
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This is the first bug fix release in the 1.2 series since the original
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1.2.0 release made six weeks ago.
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There were some very serious bugs in the 1.2.0 release, (see below),
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so everybody is encouraged to upgrade from 1.2.0 to 1.2.2. The 1.2.2
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release maintains source and binary compatibility with 1.2.0 and does
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not make any API additions.
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Fix crashes with BGR X servers
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------------------------------
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With cairo 1.2.0 many people reported problems with all cairo-using
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programs, (including all GTK+ programs with GTK+ >= 2.8) immediately
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crashing with a complaint about an unsupported image format. This bug
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affected X servers that do not provide the Render extension and that
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provide a visual with BGR rather than RGB channel order.
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report: https://bugs.freedesktop.org/show_bug.cgi?id=7294
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fix: http://gitweb.freedesktop.org/?p=cairo;a=commit;h=9ae66174e774b57f16ad791452ed44efc2770a59
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Fix the "disappearing text" bug
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-------------------------------
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With cairo 1.2.0 many people reported that text would disappear from
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applications, sometimes reappearing with mouse motion or
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selection. The text would disappear after the first space in a string
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of text. This bug was caused by an underlying bug in (very common) X
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servers, and only affected text rendered without antialiasing, (either
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a bitmap font or a vector font with antialiasing disabled). The bug
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was also exacerbated by a KDE migration bug that caused antialiasing
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to be disabled more than desired.
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report: https://bugs.freedesktop.org/show_bug.cgi?id=7494
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fix: http://gitweb.freedesktop.org/?p=cairo;a=commit;h=456cdb3058f3b416109a9600167cd8842300ae14
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see also:
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Xorg: https://bugs.freedesktop.org/show_bug.cgi?id=7681
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KDE: http://qa.mandriva.com/show_bug.cgi?id=23990
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Fix broken image fallback scaling (aka. "broken printing")
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----------------------------------------------------------
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The various "print" backends, (pdf, ps, and svg), sometimes fallback
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to using image-based rendering for some operations. In cairo 1.2.0
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these image fallbacks were scaled improperly. Applications using cairo
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can influence the resolution of the image fallbacks with
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cairo_surface_set_fallback_resolution. With the bug, any calue other
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than 72.0 would lead to incorrect results, (larger values would lead
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to increasingly shrunken output).
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report: https://bugs.freedesktop.org/show_bug.cgi?id=7533
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fix: http://gitweb.freedesktop.org/?p=cairo;a=commit;h=1feb4291cf7813494355459bb547eec604c54ffb
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Fix inadvertent semantic change of font matrix translation (Behdad Esfahbod)
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----------------------------------------------------------------------------
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The 1.2.0 release introduced an inadvertent change to how the
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translation components of a font matrix are interpreted. In the 1.0
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series, font matrix translation could be used to offset the glyph
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origin, (though glyph metrics were reported incorrectly in
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1.0). However in 1.2.0, the translation was applied to the advance
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values betwen each glyph. The 1.2.0 behavior is fairly useless in
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practice, and it was not intentional to introduce a semantic
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change. With 1.2.2 we return to the 1.0 semantics, with a much better
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implementation that provides correct glyph metrics.
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fix: http://gitweb.freedesktop.org/?p=cairo;a=commit;h=84840e6bba6e72aa88fad7a0ee929e8955ba9051
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Fix create_similar to preserve fallback resolution and font options (Behdad Esfahbod)
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-------------------------------------------------------------------------------------
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There has been a long-standing issue with cairo_surface_create_similar
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such that font options and other settings from the original
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destination surface would not be preserved to the intermediate
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"similar" surface. This could result in incorrect rendering
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(particulary with respect to text hinting/antialiasing) with
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fallbacks, for example.
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report: https://bugs.freedesktop.org/show_bug.cgi?id=4106
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fixes: http://gitweb.freedesktop.org/?p=cairo;a=commit;h=9fcb3c32c1f16fe6ab913e27eb54d18b7d9a06b0
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http://gitweb.freedesktop.org/?p=cairo;a=commit;h=bdb4e1edadb78a2118ff70b28163f8bd4317f1ec
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xlib: Fix text performance regression from 1.0 to 1.2.0 (Vladimir Vukicevic)
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----------------------------------------------------------------------------
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Several people noticed that upgrading from cairo 1.0 to cairo 1.2.0
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caused a significant peformance regression when using the xlib
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backend. This performance regression was particularly noticeable when
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doing lots of text rendering and when using a high-latency connection
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to the X server, (such as a remote X server over an ssh
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connection). The slowdown was identified and fixed in 1.2.2.
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report: https://bugs.freedesktop.org/show_bug.cgi?id=7514
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fix: http://gitweb.freedesktop.org/?p=cairo;a=commit;h=b7191885c88068dad57d68ced69a752d1162b12c
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PDF: Eliminate dependency on FreeType library dependency (Adrian Johnson)
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-------------------------------------------------------------------------
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The cairo 1.2 series adds a supported pdf backend to cairo. In cairo
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1.2.0 this backend required the freetype library, which was an
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undesirable dependency on systems such as win32, (cairo is designed to
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always prefer the "native" font system). As of cairo 1.2.2 the
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freetype library is not required to use the pdf backend on the win32
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platform.
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report: https://bugs.freedesktop.org/show_bug.cgi?id=7538
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fix: http://gitweb.freedesktop.org/?p=cairo;a=commit;h=a0989f427be87c60415963dd6822b3c5c3781691
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PDF: Fix broken output on amd64 (Adrian Johnson)
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------------------------------------------------
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report: http://bugzilla.gnome.org/show_bug.cgi?id=349826
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fix: http://gitweb.freedesktop.org/?p=cairo;a=commit;h=f4b12e497b7ac282b2f6831b8fb68deebc412e60
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PS: Fix broken output for truetype fonts > 64k (Adrian Johnson)
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---------------------------------------------------------------
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fix: http://gitweb.freedesktop.org/?p=cairo;a=commit;h=067d97eb1793a6b0d0dddfbd0b54117844511a94
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PDF: Fix so that dashing doesn't get stuck on (Kent Worsnop)
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------------------------------------------------------------
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Kent notices that with the PDF backend in cairo 1.2.0 as soon as a
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stroke was performed with dashing, all subsequent strokes would also
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be dashed. There was no way to turn dashing off again.
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fix: http://gitweb.freedesktop.org/?p=cairo;a=commit;h=778c4730a86296bf0a71080cf7008d7291792256
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Fix memory leaks in failure paths in gradient creation (Alfred Peng)
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--------------------------------------------------------------------
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fix: http://gitweb.freedesktop.org/?p=cairo;a=commit;h=db06681b487873788b51a6766894fc619eb8d8f2
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Fix memory leak in _cairo_surface_show_glyphs (Chris Wilson)
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------------------------------------------------------------
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report: https://bugs.freedesktop.org/show_bug.cgi?id=7766
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fix: http://gitweb.freedesktop.org/?p=cairo;a=commit;h=e2fddcccb43d06486d3680a19cfdd5a54963fcbd
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Solaris: Add definition of cairo_private for some Sun compilers (Alfred Peng)
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-----------------------------------------------------------------------------
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report: https://bugzilla.mozilla.org/show_bug.cgi?id=341874
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fix: http://gitweb.freedesktop.org/?p=cairo;a=commit;h=04757a3aa8deeff3265719ebe01b021638990ec6
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Solaris: Change version number of Sun's Xorg server with buggy repeat (Brian Cameron)
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-------------------------------------------------------------------------------------
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report: https://bugs.freedesktop.org/show_bug.cgi?id=7483
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fix: http://gitweb.freedesktop.org/?p=cairo;a=commit;h=e0ad1aa995bcec4246c0b8ab0d5a5a79871ce235
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Various memory leak fixes
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-------------------------
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Fix memory leak in _cairo_surface_show_glyphs (bug 7766)
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Fix file handle leak in failure path (bug 7616)
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Fix some memory leaks in the test cases.
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Fix some memory leaks in font subsetting code used in print backends.
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Documentation improvements (Behdad Esfahbod)
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--------------------------------------------
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Added new documentation for several functions (cairo_show_page,
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cairo_copy_page, cairo_in_stroke, cairo_in_fill).
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Fixed some syntax errors that were preventing some existing
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documentation from being published.
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Fixed several minor typographical errors.
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Added an index for new symbols in 1.2.
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2006-06-27 15:44:52 +02:00
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Release 1.2.0 (2006-06-27 Carl Worth <cworth@cworth.org>)
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=========================================================
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This is the culmination of the work that has gone on within the 1.1
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branch of cairo.
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There has been one API addition since the cairo 1.1.10 snapshot:
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cairo_xlib_surface_get_width
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cairo_xlib_surface_get_height
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There's also a new feature without any API change:
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Dots can now be drawn by using CAIRO_LINE_CAP_ROUND with
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degenerate sub-paths, (cairo_move_to() followed by either
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cairo_close_path() or a cairo_line_to() to the same location).
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And at least the following bugs have been fixed:
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6759 fontconfig option AntiAlias doesn't work in cairo 1.1.2
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6955 Some characters aren't displayed when using xlib (cache u...
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7268 positive device_offset values don't work as source
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* PDF emit_glyph function needs to support bitmapped glyphs
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* PS emit_glyph function needs to support bitmapped glyphs
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* SVG emit_glyph function needs to support bitmapped glyphs
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* PDF: minefield page one is falling back unnecessarily
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* PS/PDF: Fix broken placement for vertical glyphs
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* PS: Fix to not draw BUTT-capped zero-length dash segments
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* Do device offset before float->fixed conversion
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http://bugzilla.gnome.org/show_bug.cgi?id=332266
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* PS: Fix source surfaces with transformations
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* PS: Fix to not draw BUTT-capped degnerate sub-paths
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* PS: Don't walk off end of array when printing "~>"
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* Fix some memory leaks in the test suite rig
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* SVG: Fix memory leak when using cairo_mask
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* Fix EXTEND_REFLECT and EXTEND_PAD to not crash (though these are
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still not yet fully implemented for surface patterns).
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This has been a tremendous effort by everyone, and I'm proud to have
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been a part of it. Congratulations to all contributors to cairo!
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2006-06-16 09:45:44 -07:00
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Snapshot 1.1.10 (2006-06-16 Carl Worth <cworth@cworth.org>)
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===========================================================
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This is the fifth in a series of snapshots working toward the 1.2
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release of cairo.
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The primary motivation for this snapshot is to fix a long-standing bug
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that had long been silent, but as of the 1.1.8 snapshot started
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causing crashes when run against 16-bit depth X servers, (often Xvnc
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or Xnest). The fix for this adds a new CAIRO_FORMAT_RGB16_565 to the
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API.
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This snapshot also includes a rewrite of cairo's SVG backend to
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eliminate the dependency on libxml2. With this in place, cairo 1.2
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will not depend on any libraries that cairo 1.0 did not.
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As usual, there are also a few fixes for minor bugs.
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2006-06-14 08:14:43 -07:00
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Snapshot 1.1.8 (2006-06-14 Carl Worth <cworth@cworth.org>)
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==========================================================
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This is the fourth in a series of snapshots working toward the 1.2
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release of cairo. At this point, all major features of the 1.2 release
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are in place, leaving just a few bug fixes left.
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In particular, there well be no additional API changes between this
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1.1.8 snapshot and the 1.2 release.
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The announcement for 1.1.6 mentioned several API changes being
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considered. Only one of these changes was actually implemented
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(set_dpi -> fallback_resolution). This change does introduce one
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source-level incompatibility with respect to previous 1.1.x snapshots,
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so see below for details.
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Here is an abbreviated summary of changes since the 1.1.6 snapshot:
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** API Change **
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----------------
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According to the plan mentioned in the 1.1.6 notes, one source-level
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incompatible change has been implemented. The following three
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functions have been removed from cairo's API:
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cairo_pdf_surface_set_dpi
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cairo_ps_surface_set_dpi
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cairo_svg_surface_set_dpi
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and in their place the following function has been added:
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cairo_surface_set_fallback_resolution
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The signature and semantics of the function remains the same, so it is
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a simple matter of changing the name of the function when calling
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it. As a transition mechanism, this snapshot will (on many systems)
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build to include the old symbols so that code previously compiled will
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still run. However, all source code using the old names must be
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updated before it will compile. And the upcoming 1.2 release is not
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anticipated to include the old symbols.
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Finally, it should be pointed out that the old symbols never existed
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in the supported API of any stable release of cairo. (In the stable
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1.0 releases the PDF, PS, and SVG backends were advertised as
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experimental and unstable.)
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And, as always, cairo continues to maintain source and binary
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compatibility between major releases. So applications compiled against
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supported backends in a stable release of cairo (1.0.4 say) will
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continue to compile and run without modification against new major
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releases (1.2.0 say) without modification.
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API additions
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-------------
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The following new functions have been added to cairo's API:
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cairo_surface_get_content
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cairo_debug_reset_static_data
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cairo_image_surface_get_data
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cairo_image_surface_get_format
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cairo_image_surface_get_stride
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cairo_win32_font_face_create_for_hfont
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New, backend-specific pkg-config files
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--------------------------------------
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In addition to the original cairo.pc file, cairo will also now install
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a pkg-config files for each configured backend, (for example
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cairo-pdf.pc, cairo-svg.pc, cairo-xlib.pc, cairo-win32.pc, etc.) this
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also includes optional font backends (such as cairo-ft.pc) and the
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|
|
|
optional png functionality (cairo-png.pc).
|
|
|
|
|
|
|
|
|
|
These new pkg-config files should be very convenient for allowing
|
|
|
|
|
cairo-using code to easily check for the existing of optional
|
|
|
|
|
functionality in cairo without having to write complex rules to grub
|
|
|
|
|
through cairo header files or the compiled library looking for
|
|
|
|
|
symbols.
|
|
|
|
|
|
|
|
|
|
Printing backend (PS, PDF, and SVG)
|
|
|
|
|
-----------------------------------
|
|
|
|
|
Improving the quality of the "printing" backends has been a priority
|
|
|
|
|
of the development between cairo 1.1.6 and cairo 1.1.8.
|
|
|
|
|
|
|
|
|
|
The big improvement here is in the area of text output. Previously, at
|
|
|
|
|
best, text was output as paths without taking advantage of any font
|
|
|
|
|
support available in the output file format.
|
|
|
|
|
|
|
|
|
|
Now, at the minimum text paths will be shared by using type3 fonts
|
|
|
|
|
(for PS and PDF---and similarly, defs for SVG). Also, if possible,
|
|
|
|
|
type3 and truetype fonts will be embedded in PostScript and PDF
|
|
|
|
|
output. There are still some known bugs with this, (for example,
|
|
|
|
|
selecting text in a cairo-generated PDF file with an embedded truetype
|
|
|
|
|
font does not work). So there will be some more changes in this area
|
|
|
|
|
before cairo 1.2, but do try test this feature out as it exists so
|
|
|
|
|
far.
|
|
|
|
|
|
|
|
|
|
Many thanks to Kristian Høgsberg for the truetype and type1 font
|
|
|
|
|
embedding.
|
|
|
|
|
|
|
|
|
|
win32 backend
|
|
|
|
|
-------------
|
|
|
|
|
Performance improvements by preferring GDI over pixman rendering when possible.
|
|
|
|
|
Fixes for text rendering.
|
|
|
|
|
|
|
|
|
|
xlib backend
|
|
|
|
|
------------
|
|
|
|
|
Fix potentially big performance bug by making xlib's create_similar
|
|
|
|
|
try harder to create a pixmap of a depth matching that of the screen.
|
|
|
|
|
|
|
|
|
|
Bug fixes
|
|
|
|
|
---------
|
|
|
|
|
Among various other fixes, the following bugs listed in bugzilla have
|
|
|
|
|
been fixed:
|
|
|
|
|
|
|
|
|
|
Bug 2488: Patch to fix pixman samping location bug (#2488).
|
|
|
|
|
https://bugs.freedesktop.org/show_bug.cgi?id=2488
|
|
|
|
|
|
|
|
|
|
Bug 4196: undef MIN an MAX before defining to avoid duplicate definition
|
|
|
|
|
https://bugs.freedesktop.org/show_bug.cgi?id=4196
|
|
|
|
|
|
|
|
|
|
Bug 4723: configure.in: Fix m4 quoting when examining pkg-config version
|
|
|
|
|
https://bugs.freedesktop.org/show_bug.cgi?id=4723
|
|
|
|
|
|
|
|
|
|
Bug 4882: Flag Sun's X server has having buggy_repeat.
|
|
|
|
|
https://bugs.freedesktop.org/show_bug.cgi?id=4882
|
|
|
|
|
|
|
|
|
|
Bug 5306: test/pdf2png: Add missing include of stdio.h
|
|
|
|
|
https://bugs.freedesktop.org/show_bug.cgi?id=5306
|
|
|
|
|
|
|
|
|
|
Bug 7075: Fix make clean to remove cairo.def
|
|
|
|
|
https://bugs.freedesktop.org/show_bug.cgi?id=7075
|
|
|
|
|
|
|
|
|
|
(Many thanks to Behdad Esfahbod for helping us track down and fix many
|
|
|
|
|
of these.)
|
|
|
|
|
|
2006-05-04 23:39:12 -07:00
|
|
|
Snapshot 1.1.6 (2006-05-04 Carl Worth <cworth@cworth.org>)
|
|
|
|
|
==========================================================
|
|
|
|
|
This is the third in a series of snapshots working toward the imminent
|
|
|
|
|
1.2 release of cairo. For a list of items still needing work on the
|
|
|
|
|
cairo 1.2 roadmap, please see:
|
|
|
|
|
|
|
|
|
|
http://cairographics.org/ROADMAP
|
|
|
|
|
|
|
|
|
|
As can be seen in that list, there are no longer any API additions
|
|
|
|
|
left on the roadmap. Instead, there is a feature (PDF type 3 fonts) a
|
|
|
|
|
performance optimization (X server gradients) and a list of bug
|
|
|
|
|
fixes. This gives us a fair amount of freedom to cut the 1.2 release
|
|
|
|
|
at almost any point by deciding to defer remaining bug fixes to
|
|
|
|
|
subsequent maintenance releases such as 1.2.2 and 1.2.4.
|
|
|
|
|
|
|
|
|
|
Before we will do that, we must first be wiling to commit to all the
|
|
|
|
|
new API additions. As a heads-up, there are a couple of potential API
|
|
|
|
|
changes being considered. (Note that these are changes to new API
|
|
|
|
|
introduced during 1.1 so these will not introduce API
|
|
|
|
|
incompatibilities compared to the stable 1.0 series). The changes
|
|
|
|
|
being considered are:
|
|
|
|
|
|
|
|
|
|
cairo_get_group_target: may acquire x and y offset return
|
|
|
|
|
parameters. May also be eliminated in favor of
|
|
|
|
|
cairo_get_target assuming its role
|
|
|
|
|
|
|
|
|
|
cairo_pdf_surface_set_dpi:
|
|
|
|
|
cairo_ps_surface_set_dpi:
|
|
|
|
|
cairo_svg_surface_set_dpi: These functions may be removed in favor
|
|
|
|
|
of a new cairo_surface_set_fallback_resolution
|
|
|
|
|
|
|
|
|
|
Additionally there is the possibility of a slight change in the
|
|
|
|
|
semantics of cairo_set_line_width. We believe the current behavior of the sequence:
|
|
|
|
|
|
|
|
|
|
cairo_set_line_width; ... change CTM ...; cairo_stroke;
|
|
|
|
|
|
|
|
|
|
is buggy. It is currently behaving the same as:
|
|
|
|
|
|
|
|
|
|
... change CTM ...; cairo_set_line_width; cairo_stroke;
|
|
|
|
|
|
|
|
|
|
We are considering fixing this bug before 1.2 with the hope that
|
|
|
|
|
nobody is already relying on the buggy behavior described here. Do
|
|
|
|
|
shout if you suspect you might be in that position.
|
|
|
|
|
|
|
|
|
|
The items included in this snapshot (since the 1.1.4 snapshot) are
|
|
|
|
|
described below.
|
|
|
|
|
|
|
|
|
|
API additions
|
|
|
|
|
-------------
|
|
|
|
|
The long-awaited group-rendering support is now available with the
|
|
|
|
|
following function calls:
|
|
|
|
|
|
|
|
|
|
cairo_push_group
|
|
|
|
|
cairo_push_group_with_content
|
|
|
|
|
cairo_pop_group
|
|
|
|
|
cairo_pop_group_to_source
|
|
|
|
|
cairo_get_group_target
|
|
|
|
|
|
|
|
|
|
This API provides a much more convenient mechanism for doing rendering
|
|
|
|
|
to an intermediate surface without the need to manually create a
|
|
|
|
|
temporary cairo_surface_t and a temporary cairo_t and clean them up
|
|
|
|
|
afterwards.
|
|
|
|
|
|
|
|
|
|
Add the following missing get function to complement
|
|
|
|
|
cairo_surface_set_device_offset:
|
|
|
|
|
|
|
|
|
|
cairo_surface_get_device_offset
|
|
|
|
|
|
|
|
|
|
PDF backend (API addition)
|
|
|
|
|
--------------------------
|
|
|
|
|
The PDF backend now provides for per-page size changes, (similar to
|
|
|
|
|
what the PostScript backend got in the 1.1.4 snapshot). The new API
|
|
|
|
|
is:
|
|
|
|
|
|
|
|
|
|
cairo_pdf_surface_set_size
|
|
|
|
|
|
|
|
|
|
Xlib backend (API additions)
|
|
|
|
|
----------------------------
|
|
|
|
|
The following functions have been added to allow the extraction of
|
|
|
|
|
Xlib surface:
|
|
|
|
|
|
|
|
|
|
cairo_xlib_surface_get_display
|
|
|
|
|
cairo_xlib_surface_get_drawable
|
|
|
|
|
cairo_xlib_surface_get_screen
|
|
|
|
|
cairo_xlib_surface_get_visual
|
|
|
|
|
cairo_xlib_surface_get_depth
|
|
|
|
|
|
|
|
|
|
XCB backend (experimental)
|
|
|
|
|
--------------------------
|
|
|
|
|
Update backend so that it now compiles with the recent XCB 0.9 release.
|
|
|
|
|
|
|
|
|
|
Bug fixes and memory leak cleanup
|
|
|
|
|
---------------------------------
|
|
|
|
|
Various little things, nothing too significant though.
|
|
|
|
|
|
2006-05-03 01:31:51 -07:00
|
|
|
Snapshot 1.1.4 (2006-05-03 Carl Worth <cworth@cworth.org>)
|
|
|
|
|
==========================================================
|
|
|
|
|
This is the second in a series of snapshots working toward the
|
|
|
|
|
upcoming 1.2 release of cairo. For a list of items still needing work
|
|
|
|
|
on the cairo 1.2 roadmap, please see:
|
|
|
|
|
|
|
|
|
|
http://cairographics.org/ROADMAP
|
|
|
|
|
|
|
|
|
|
The items included in this snapshot (since the 1.1.2 snapshot) are
|
|
|
|
|
described below.
|
|
|
|
|
|
|
|
|
|
PostScript backend: new printing-oriented API
|
|
|
|
|
---------------------------------------------
|
|
|
|
|
We anticipate that with cairo 1.2, toolkits will begin to use cairo
|
|
|
|
|
for printing on systems that use PostScript as the spool format. To
|
|
|
|
|
support this use case, we have added 4 new function calls that are
|
|
|
|
|
specific to the PostScript backend:
|
|
|
|
|
|
|
|
|
|
cairo_ps_surface_set_size
|
|
|
|
|
cairo_ps_surface_dsc_comment
|
|
|
|
|
cairo_ps_surface_dsc_begin_setup
|
|
|
|
|
cairo_ps_surface_dsc_begin_page_setup
|
|
|
|
|
|
|
|
|
|
These functions allow variation of the page size/orientation from one
|
|
|
|
|
page to the next in the PostScript output. They also allow the toolkit
|
|
|
|
|
to provide per-document and per-page printer control options in a
|
|
|
|
|
device-independent way, (for example, by using PPD options and
|
|
|
|
|
emitting them as DSC comments into the PostScript output). This should
|
|
|
|
|
allow toolkits to provide very fine-grained control of many options
|
|
|
|
|
available in printers, (media size, media type, tray selection, etc.).
|
|
|
|
|
|
|
|
|
|
SVG backend: builds by default, version control
|
|
|
|
|
-----------------------------------------------
|
|
|
|
|
The SVG backend continues to see major improvements. It is expected
|
|
|
|
|
that the SVG backend will be a supported backend in the 1.2
|
|
|
|
|
release. This backend will now be built by default if its dependencies
|
|
|
|
|
(freetype and libxml2) are met.
|
|
|
|
|
|
|
|
|
|
Additionally, the SVG backend now has flexibility with regard to what
|
|
|
|
|
version of SVG it targets. It will target SVG 1.1 by default, which
|
|
|
|
|
will require image fallbacks for some of the "fancier" cairo
|
|
|
|
|
compositing operators. Or with the following new function calls:
|
|
|
|
|
|
|
|
|
|
cairo_svg_surface_restrict_to_version
|
|
|
|
|
cairo_svg_get_versions
|
|
|
|
|
cairo_svg_version_to_string
|
|
|
|
|
|
|
|
|
|
it can be made to target SVG 1.2 in which there is native support for
|
|
|
|
|
these compositing operators.
|
|
|
|
|
|
|
|
|
|
Bug fixes
|
|
|
|
|
---------
|
|
|
|
|
At least the following bugs have been fixed since the 1.1.2 snapshot:
|
|
|
|
|
|
|
|
|
|
crash at XRenderAddGlyphs
|
|
|
|
|
https://bugs.freedesktop.org/show_bug.cgi?id=4705
|
|
|
|
|
|
|
|
|
|
Can't build cairo-1.1.2 on opensolaris due to " void function cannot return value"
|
|
|
|
|
https://bugs.freedesktop.org/show_bug.cgi?id=6792
|
|
|
|
|
|
|
|
|
|
Missing out-of-memory check at gfx/cairo/cairo/src/cairo-atsui-font.c:185
|
|
|
|
|
https://bugzilla.mozilla.org/show_bug.cgi?id=336129
|
|
|
|
|
|
|
|
|
|
A couple of memory leaks.
|
|
|
|
|
|
2006-04-25 08:44:45 -07:00
|
|
|
Snapshot 1.1.2 (2006-04-25 Carl Worth <cworth@cworth.org>)
|
|
|
|
|
==========================================================
|
|
|
|
|
This is the first in a series of snapshots working toward the upcoming
|
2006-05-04 23:39:12 -07:00
|
|
|
1.2 release of cairo. (Subsequent snapshot will use successive even
|
2006-04-25 08:44:45 -07:00
|
|
|
numbers for the third digit, 1.1.4, 1.1.6, etc.) This snapshot is
|
|
|
|
|
backwards-compatible with the 1.0 series---it makes a few API
|
|
|
|
|
additions but does not remove any API.
|
|
|
|
|
|
|
|
|
|
PostScript and PDF backends are no longer "experimental"
|
|
|
|
|
--------------------------------------------------------
|
|
|
|
|
The major theme of the 1.2 release is improved PostScript and PDF
|
|
|
|
|
backends for cairo. Unlike the 1.0 series, in the 1.2 series these
|
|
|
|
|
backends will not be marked as experimental and will be enabled by
|
|
|
|
|
default. We encourage people to test this snapshot and the PS/PDF
|
|
|
|
|
backends in particular as much as possible.
|
|
|
|
|
|
|
|
|
|
The PostScript and PDF output is not yet ideal.
|
|
|
|
|
|
|
|
|
|
* One major problem with the PostScript output is that image
|
|
|
|
|
fallbacks are used more often than strictly necessary, and the
|
|
|
|
|
image fallbacks are at a lower resolution than desired, (the
|
|
|
|
|
cairo_ps_surface_set_dpi call is ignored).
|
|
|
|
|
|
|
|
|
|
* The major drawback of the current PDF backend implementation is
|
|
|
|
|
its text support. Every glyph is represented by a filled path in
|
|
|
|
|
the PDF file. The causes file sizes to be much larger and
|
|
|
|
|
rendering to be much slower than desired.
|
|
|
|
|
|
|
|
|
|
It is anticipated that both of these shortcomings will see some
|
|
|
|
|
improvements before the final 1.2 release.
|
|
|
|
|
|
|
|
|
|
In spite of those shortcomings, we hope that the PS and PDF backends
|
|
|
|
|
will yield faithful results for pretty much any cairo operations you
|
|
|
|
|
can throw at them. Please let us know if you are getting obviously
|
|
|
|
|
"different" results from the PS/PDF backends than from the image or
|
|
|
|
|
xlib backends.
|
|
|
|
|
|
|
|
|
|
Other new experimental backends
|
|
|
|
|
-------------------------------
|
|
|
|
|
This snapshot includes three new backends that did not exist in the
|
|
|
|
|
1.0 series:
|
|
|
|
|
|
|
|
|
|
* beos backend
|
|
|
|
|
|
|
|
|
|
* directfb backend
|
|
|
|
|
|
|
|
|
|
* svg backend
|
|
|
|
|
|
|
|
|
|
These are all currently marked "experimental" and are disabled by
|
|
|
|
|
default. But the SVG backend in particular has seen a lot of recent
|
|
|
|
|
development and is very close to passing the entire cairo test
|
|
|
|
|
suite. It is possible that this backend will become a fully supported
|
|
|
|
|
backend by the time of the cairo 1.2 release.
|
|
|
|
|
|
|
|
|
|
Public API additions
|
|
|
|
|
--------------------
|
|
|
|
|
There have been a few new API functions added to cairo, including:
|
|
|
|
|
|
|
|
|
|
New get_type functions for querying sub-types of object:
|
|
|
|
|
|
|
|
|
|
cairo_surface_get_type
|
|
|
|
|
cairo_pattern_get_type
|
|
|
|
|
cairo_font_face_get_type
|
|
|
|
|
cairo_scaled_font_get_type
|
|
|
|
|
|
|
|
|
|
More convenience in working with cairo_scaled_font_t with new getter
|
|
|
|
|
functions:
|
|
|
|
|
|
|
|
|
|
cairo_scaled_font_get_font_face
|
|
|
|
|
cairo_scaled_font_get_font_matrix
|
|
|
|
|
cairo_scaled_font_get_ctm
|
|
|
|
|
cairo_scaled_font_get_font_options
|
|
|
|
|
|
|
|
|
|
As well as a convenience function for setting a scaled font into a
|
|
|
|
|
cairo context:
|
|
|
|
|
|
|
|
|
|
cairo_set_scaled_font
|
|
|
|
|
|
|
|
|
|
and a function to allow text extents to be queried directly from a
|
|
|
|
|
scaled font, (without requiring a cairo_surface_t or a cairo_t):
|
|
|
|
|
|
|
|
|
|
cairo_scaled_font_text_extents
|
|
|
|
|
|
|
|
|
|
These new scaled font functions were motivated by the needs of the
|
|
|
|
|
pango library.
|
|
|
|
|
|
|
|
|
|
Finally, a new path-construction function was added which clears the
|
|
|
|
|
current point in preparation for a new sub path. This makes cairo_arc
|
|
|
|
|
easier to use in some situations:
|
|
|
|
|
|
|
|
|
|
cairo_new_sub_path
|
|
|
|
|
|
|
|
|
|
Before the 1.2 release is final we do still plan a few more API
|
|
|
|
|
additions specifically motivated by the needs of Mozilla/Firefox.
|
|
|
|
|
|
|
|
|
|
Optimizations and bug fixes
|
|
|
|
|
---------------------------
|
|
|
|
|
Shortly after the 1.0 maintenance series branched off the mainline
|
|
|
|
|
there was a major rework of the cairo font internals. This should
|
|
|
|
|
provide some good performance benefits, but it's also another area
|
|
|
|
|
people should look at closely for potential regressions.
|
|
|
|
|
|
|
|
|
|
There has not yet been any widespread, systematic optimization of
|
|
|
|
|
cairo, but various performance improvements have been made, (and some
|
|
|
|
|
of them are fairly significant). So if some things seem faster than
|
|
|
|
|
1.0 then things are good. If there are any performance regressions
|
|
|
|
|
compared to 1.0 then there is a real problem and we would like to hear
|
|
|
|
|
about that.
|
|
|
|
|
|
|
|
|
|
There has been a huge number of bug fixes---too many to mention in
|
|
|
|
|
detail. Again, things should be better, and never worse compared to
|
|
|
|
|
1.0. Please let us know if your testing shows otherwise.
|
|
|
|
|
|
2005-10-03 17:49:25 +00:00
|
|
|
Release 1.0.2 (2005-10-03 Carl Worth <cworth@cworth.org>)
|
|
|
|
|
=========================================================
|
|
|
|
|
For each bug number XXXX below, see:
|
|
|
|
|
|
|
|
|
|
https://bugs.freedesktop.org/show_bug.cgi?id=XXXX
|
|
|
|
|
|
|
|
|
|
for more details.
|
|
|
|
|
|
|
|
|
|
General bug fixes
|
|
|
|
|
-----------------
|
|
|
|
|
* 4408 - Add support for dashing of stroked curves
|
|
|
|
|
(Carl Worth)
|
|
|
|
|
|
|
|
|
|
* 4409 - Fix dashing so that each dash is capped on both ends
|
|
|
|
|
(Carl Worth)
|
|
|
|
|
|
|
|
|
|
* 4414 - Prevent SIGILL failures (proper use of -mmmx and -msse flags)
|
|
|
|
|
(Sebastien Bacher, Billy Biggs)
|
|
|
|
|
|
|
|
|
|
* 4299 - Fix crashes with text display in multi-threaded program
|
|
|
|
|
(Alexey Shabalin, Carl Worth)
|
|
|
|
|
|
|
|
|
|
* 4401 - Do not use sincos function since it is buggy on some platforms)
|
|
|
|
|
(Tim Mooney, Carl Worth)
|
|
|
|
|
|
|
|
|
|
* 4245 - Fix several bugs in the test suite exposed by amd64 systems
|
|
|
|
|
(Seemant Kulleen, Carl Worth)
|
|
|
|
|
|
|
|
|
|
* 4321 - Add missing byteswapping on GetImage/PutImage
|
|
|
|
|
(Sjoerd Simons, Owen Taylor)
|
|
|
|
|
|
|
|
|
|
* 4220 - Make the check for rectangular trapezoids simpler and more accurate
|
|
|
|
|
(Richard Stellingwerff, Owen Taylor)
|
|
|
|
|
|
|
|
|
|
* 4260 - Add missing channel-order swapping for antialised fonts
|
|
|
|
|
(Barbie LeVile, Owen Taylor)
|
|
|
|
|
|
|
|
|
|
* 4283 - Fix compilation failure with aggressive inlining (gcc -O3)
|
|
|
|
|
(Marco Manfredini, Owen Taylor)
|
|
|
|
|
|
|
|
|
|
* 4208 - Fix some warnings from sparse
|
|
|
|
|
(Kjartan Maraas, Billy Biggs)
|
|
|
|
|
|
|
|
|
|
* 4269 - Fix to not crash when compiled with -fomit-frame-pointer
|
|
|
|
|
(Ronald Wahl, Owen Taylor)
|
|
|
|
|
|
|
|
|
|
* 4263 - Improve performance for vertical gradients
|
|
|
|
|
(Richard Stellingwerff, Owen Taylor)
|
|
|
|
|
|
|
|
|
|
* 4231
|
|
|
|
|
* 4298 - Accomodate gentoo and Mandriva versions in X server vendor string check
|
|
|
|
|
(Billy Biggs, Frederic Crozat, Owen Taylor)
|
|
|
|
|
|
|
|
|
|
win32-specific fixes
|
|
|
|
|
--------------------
|
|
|
|
|
* 4599 - Fix "missing wedges" on some stroked paths (win32)
|
|
|
|
|
(Tim Rowley, Jonathan Watt, Bertram Felgenhauer, Carl Worth, Keith Packard)
|
|
|
|
|
|
|
|
|
|
* 4612 - Fix disappearing text if first character out of surface (win32)
|
|
|
|
|
(Tim Rowley)
|
|
|
|
|
|
|
|
|
|
* 4602 - Fix shutdown of cairo from failing intermediate, size-0 bitmaps (win32)
|
|
|
|
|
Aka. the "white rectangles" bug from mozilla-svg testing
|
|
|
|
|
(Tim Rowley)
|
|
|
|
|
|
|
|
|
|
* Various portability improvements for win32
|
|
|
|
|
(Hans Breuer, Owen Taylor, Carl Worth)
|
|
|
|
|
|
|
|
|
|
* 4593 - Fix font sizes to match user expectations (win32)
|
|
|
|
|
(Tor Lillqvist, Owen Taylor)
|
|
|
|
|
|
|
|
|
|
* 3927 - Fix to report metrics of size 0 for glyph-not-available (win32)
|
|
|
|
|
(Hans Breuer, Owen Taylor, Tor Lillqvist)
|
|
|
|
|
|
|
|
|
|
* Add locking primitives for win32
|
|
|
|
|
(Hans Breuer)
|
|
|
|
|
|
|
|
|
|
xlib-specific fixes
|
|
|
|
|
-------------------
|
|
|
|
|
* Fix crash from size-0 pixmap due to empty clip region (xlib)
|
|
|
|
|
(Radek Doulík, Carl Worth)
|
|
|
|
|
|
2005-08-24 05:21:50 +00:00
|
|
|
Release 1.0.0 (2005-08-24 Carl Worth <cworth@cworth.org>)
|
|
|
|
|
=========================================================
|
|
|
|
|
Experimental backends
|
|
|
|
|
---------------------
|
2005-08-24 09:26:28 +00:00
|
|
|
* The Glitz, PS, PDF, Quartz, and XCB backends have been declared
|
2005-08-24 05:21:50 +00:00
|
|
|
experimental, and are not part of the API guarantees that accompany
|
|
|
|
|
this release. They are not built by default, even when the required
|
|
|
|
|
libraries are available, and must be enabled explicitly with
|
|
|
|
|
--enable-ps, --enable-pdf, --enable-quartz or --enable-xcb.
|
|
|
|
|
|
|
|
|
|
It is very painful for us to be pushing out a major release without
|
|
|
|
|
these backends enabled. There has been a tremendous amount of work
|
|
|
|
|
put into each one and all are quite functional to some
|
|
|
|
|
extent. However, each also has some limitations. And none of these
|
|
|
|
|
backends have been tested to the level of completeness and
|
|
|
|
|
correctness that we expect from cairo backends.
|
|
|
|
|
|
|
|
|
|
We do encourage people to experiment with these backends and report
|
2005-08-24 09:26:28 +00:00
|
|
|
success, failure, or means of improving them.
|
2005-08-24 05:21:50 +00:00
|
|
|
|
|
|
|
|
Operator behavior
|
|
|
|
|
-----------------
|
|
|
|
|
* Prior to 0.9.0 the SOURCE, CLEAR and a number of other operators
|
|
|
|
|
behaved in an inconsistent and buggy fashion and could affect areas
|
|
|
|
|
outside the clip mask. In 0.9.0, these six "unbounded" operators
|
|
|
|
|
were fixed to consistently clear areas outside the shape but within
|
|
|
|
|
the clip mask. This is useful behavior for an operator such as IN,
|
|
|
|
|
but not what was expected for SOURCE and CLEAR. So, in this release
|
|
|
|
|
the behavior of SOURCE and CLEAR has been changed again. They now
|
|
|
|
|
affect areas only within both the source and shape. We can write
|
|
|
|
|
the new operators as:
|
|
|
|
|
|
|
|
|
|
SOURCE: dest' = (mask IN clip) ? source : dest
|
|
|
|
|
CLEAR: dest' = (mask IN clip) ? 0 : dest
|
|
|
|
|
|
|
|
|
|
Behavior and API changes
|
|
|
|
|
------------------------
|
|
|
|
|
* Setting the filter on a gradient pattern would change the
|
|
|
|
|
interpolation between color stops away from the normal linear
|
|
|
|
|
interpolation. This dubious behavior has been removed.
|
|
|
|
|
|
|
|
|
|
* The CAIRO_CONTENT_VALID() and CAIRO_FORMAT_VALID() macros --
|
|
|
|
|
implementation details that leaked into cairo.h -- have been moved
|
|
|
|
|
into an internal header.
|
|
|
|
|
|
|
|
|
|
* The cairo_show_text function now advances the current point
|
|
|
|
|
according to the total advance values of the string.
|
|
|
|
|
|
2005-08-24 09:26:28 +00:00
|
|
|
API additions
|
|
|
|
|
-------------
|
|
|
|
|
* cairo_set_dash can now detect error and can set
|
|
|
|
|
CAIRO_STATUS_INVALID_DASH.
|
|
|
|
|
|
2005-08-24 05:21:50 +00:00
|
|
|
Features
|
|
|
|
|
--------
|
|
|
|
|
* When compiled against recent versions of fontconfig and FreeType,
|
|
|
|
|
artificial bold fonts can now be turned on from fonts.conf using
|
|
|
|
|
the FC_EMBOLDEN fontconfig key.
|
|
|
|
|
|
|
|
|
|
Optimization
|
|
|
|
|
------------
|
|
|
|
|
* The compositing code from the 'xserver' code tree has now been
|
|
|
|
|
completely merged into libpixman. This includes MMX optimization of
|
|
|
|
|
common operations.
|
|
|
|
|
|
|
|
|
|
* The image transformation code in libpixman has been improved and
|
|
|
|
|
now performs significantly faster.
|
|
|
|
|
|
|
|
|
|
Bug fixes
|
|
|
|
|
---------
|
|
|
|
|
* Several crashes related to corruption in the font caches have been
|
|
|
|
|
fixed.
|
|
|
|
|
|
|
|
|
|
* All test cases now match pixel-for-pixel on x86 and PPC; this
|
|
|
|
|
required fixing bugs in the compositing, stroking, and pattern
|
|
|
|
|
rendering code.
|
|
|
|
|
|
|
|
|
|
* Negative dash offsets have been fixed to work correctly.
|
|
|
|
|
|
|
|
|
|
* The stroking of paths with mutiple subpaths has now been fixed to
|
|
|
|
|
apply caps to all subpaths rather than just the last one.
|
|
|
|
|
|
|
|
|
|
* Many build fixes for better portability on various systems.
|
|
|
|
|
|
|
|
|
|
* Lots of other bug fixes, but we're too tired to describe them in
|
|
|
|
|
more detail here.
|
|
|
|
|
|
2005-08-13 05:00:20 +00:00
|
|
|
Release 0.9.2 (2005-08-13 Carl Worth <cworth@cworth.org>)
|
|
|
|
|
=========================================================
|
|
|
|
|
Release numbering
|
|
|
|
|
-----------------
|
|
|
|
|
* You will notice that this release jumped from 0.9.0 to 0.9.2. We've
|
|
|
|
|
decided to use an odd micro version number (eg. 0.9.1) to indicate
|
|
|
|
|
in-progress development between releases. As soon as 0.9.2 is
|
|
|
|
|
tagged, the version will be incremented in CVS to 0.9.3 where it
|
|
|
|
|
will stay until just before 0.9.4 is built, uploaded, and tagged.
|
|
|
|
|
|
|
|
|
|
So, even-micro == a released version, odd-micro == something in-between.
|
|
|
|
|
|
|
|
|
|
Libpixman dependency dropped
|
|
|
|
|
----------------------------
|
2005-08-13 05:46:40 +00:00
|
|
|
* As of this release, the dependency on an external libpixman has
|
2005-08-13 05:00:20 +00:00
|
|
|
been dropped. Instead, the code from libpixman needed for cairo has
|
|
|
|
|
been incorporated into the cairo source tree. The motivation for
|
|
|
|
|
this change is that while cairo's API is stable and ready to be
|
|
|
|
|
maintained after the 1.0 release, libpixman's API is not, so we do
|
|
|
|
|
not want to expose it at this time.
|
|
|
|
|
|
|
|
|
|
Also, the incorporation of libpixman into cairo also renames all
|
|
|
|
|
previously-public libpixman symbols in order to avoid any conflict
|
|
|
|
|
with a future release of libpixman
|
|
|
|
|
|
|
|
|
|
API additions
|
|
|
|
|
-------------
|
|
|
|
|
* Macros and functions have been added so that the version of cairo
|
|
|
|
|
can be queried at either compile-time or at run-time. The version
|
|
|
|
|
is made available as both a human-readable string and as a single
|
|
|
|
|
integer:
|
|
|
|
|
|
|
|
|
|
CAIRO_VERSION_STRING eg. "0.9.2"
|
|
|
|
|
CAIRO_VERSION eg. 000902
|
|
|
|
|
|
|
|
|
|
const char*
|
|
|
|
|
cairo_version_string (void); /* eg. "0.9.2" */
|
|
|
|
|
|
|
|
|
|
int
|
|
|
|
|
cairo_version (void); /* eg. 000902 */
|
|
|
|
|
|
|
|
|
|
A macro is provided to convert a three-part component version into
|
|
|
|
|
the encoded single-integer form:
|
|
|
|
|
|
|
|
|
|
CAIRO_VERSION_ENCODE(X,Y,Z)
|
|
|
|
|
|
|
|
|
|
For example, the CAIRO_VERSION value of 000902 is obtained as
|
|
|
|
|
CAIRO_VERSION_ENCODE(0,9,2). The intent is to make version
|
|
|
|
|
comparisons easy, either at compile-time:
|
|
|
|
|
|
|
|
|
|
#if CAIRO_VERSION >= CAIRO_VERSION_ENCODE(0,9,2)
|
|
|
|
|
...
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
Or at run-time:
|
|
|
|
|
|
|
|
|
|
if (cairo_version() >= CAIRO_VERSION_ENCODE(0,9,2)) { /* ... */ }
|
|
|
|
|
|
|
|
|
|
Thread safety
|
|
|
|
|
-------------
|
|
|
|
|
* This release adds pthread-based locking (when available) to make
|
|
|
|
|
the caches used by cairo safe for threaded programs. Some may
|
|
|
|
|
remember a failed experiment with this locking between the 0.5.1
|
|
|
|
|
and 0.5.2 snapshots, (where even single-threaded programs that
|
|
|
|
|
linked with -lpthread would deadlock). We believe that that problem
|
|
|
|
|
has been fixed, so we are looking forward to testing and reports
|
|
|
|
|
from users with threaded applications.
|
|
|
|
|
|
|
|
|
|
Bug fixes
|
|
|
|
|
---------
|
|
|
|
|
* The XCB and Quartz backends failed to compiled in the 0.9.0 release
|
|
|
|
|
due to minor syntax errors. These have now been fixed.
|
|
|
|
|
|
|
|
|
|
* Various crashes in glitz and pixman due to size 0 glyphs have been
|
|
|
|
|
fixed.
|
|
|
|
|
|
2005-08-08 21:06:44 +00:00
|
|
|
Release 0.9.0 (2005-08-08 Carl Worth <cworth@cworth.org>)
|
|
|
|
|
=========================================================
|
2005-08-13 04:17:36 +00:00
|
|
|
Soname change
|
2005-08-08 21:06:44 +00:00
|
|
|
-------------
|
2005-08-13 04:17:36 +00:00
|
|
|
* In all prior snapshots, the libtool library versioning was set to
|
|
|
|
|
1:0:0. As this release is intended to mark the beginning of
|
|
|
|
|
backwards-compatible releases, the versioning has been incremented
|
|
|
|
|
to 2:0:0. You will notice that the numeric extension on the
|
|
|
|
|
installed library filename will change similarly.
|
|
|
|
|
|
|
|
|
|
This change will also require all cairo-using applications to be
|
|
|
|
|
recompiled. We recognize that this may cause some frustration since
|
|
|
|
|
this release is backwards-compatible with 0.6.0 and in that sense
|
|
|
|
|
"shouldn't" require re-compilation. However, since all historical
|
|
|
|
|
snapshots have used the same 1:0:0 version in spite of incompatible
|
|
|
|
|
API changes between them, it was essential that the upcoming 1.0
|
|
|
|
|
release series have distinct library versioning.
|
2005-08-08 21:06:44 +00:00
|
|
|
|
2005-08-13 04:17:36 +00:00
|
|
|
All future releases will use the library versioning to properly
|
2005-08-13 05:00:20 +00:00
|
|
|
indicate compatibility between releases. So, any application
|
2005-08-13 04:17:36 +00:00
|
|
|
re-compiled now to work with the 0.9.0 will not need to be
|
|
|
|
|
recompiled when a compatible 1.0 release of cairo is made in the
|
|
|
|
|
future.
|
|
|
|
|
|
|
|
|
|
API additions
|
|
|
|
|
-------------
|
2005-08-10 20:25:57 +00:00
|
|
|
* Add new function calls to set/get the current antialiasing mode in
|
|
|
|
|
the graphics state:
|
2005-08-08 21:06:44 +00:00
|
|
|
|
|
|
|
|
cairo_set_antialias
|
2005-08-10 20:25:57 +00:00
|
|
|
cairo_get_antialias
|
2005-08-08 21:06:44 +00:00
|
|
|
|
|
|
|
|
This call accepts the same modes recently added for font options
|
|
|
|
|
(NONE or GRAY) but affects the rendering of geometry other than
|
|
|
|
|
text. The intent of this call is to enable more precise control of
|
|
|
|
|
which pixels are affected by each operation, for example to allow
|
|
|
|
|
for full-scene antialiasing for seam-free rendering. It is not
|
|
|
|
|
expected that non-antialiased rendering will perform better than
|
|
|
|
|
anti-aliased rendering.
|
|
|
|
|
|
|
|
|
|
* Three new functions were added to provide support for mixed cairo-
|
|
|
|
|
and non-cairo drawing to the same surface:
|
|
|
|
|
|
|
|
|
|
cairo_surface_mark_dirty
|
|
|
|
|
cairo_surface_mark_dirty_rectangle
|
2005-08-10 20:25:57 +00:00
|
|
|
cairo_surface_flush
|
2005-08-08 21:06:44 +00:00
|
|
|
|
|
|
|
|
* The return type of the several "reference" functions was change,
|
|
|
|
|
(API compatibly), from void to the same type as the argument. The
|
|
|
|
|
affected functions are:
|
|
|
|
|
|
|
|
|
|
cairo_font_face_reference
|
|
|
|
|
cairo_scaled_font_reference
|
|
|
|
|
cairo_pattern_reference
|
|
|
|
|
cairo_surface_reference
|
|
|
|
|
cairo_reference
|
|
|
|
|
|
|
|
|
|
This allows a convenient way to assign and reference in a single
|
|
|
|
|
statement.
|
|
|
|
|
|
2005-08-13 04:17:36 +00:00
|
|
|
Semantic changes
|
|
|
|
|
----------------
|
|
|
|
|
* The behavior of cairo_set_source with a pattern with a non-identity
|
|
|
|
|
matrix was previously not well-defined. The new behavior is as
|
|
|
|
|
follows:
|
|
|
|
|
|
|
|
|
|
The pattern's transformation matrix will be locked to the
|
|
|
|
|
user space in effect at the time of cairo_set_source(). This means
|
|
|
|
|
that further modifications of the CTM will not affect the source
|
|
|
|
|
pattern.
|
|
|
|
|
|
2005-08-08 21:06:44 +00:00
|
|
|
cairo-win32
|
|
|
|
|
-----------
|
|
|
|
|
* Some portability improvements, (eg. workaround for missing stdint.h).
|
|
|
|
|
|
|
|
|
|
cairo-ft
|
|
|
|
|
--------
|
|
|
|
|
* Updated to allow compilation with older versions of freetype.
|
|
|
|
|
|
|
|
|
|
Bug fixes
|
|
|
|
|
---------
|
|
|
|
|
* Fix the unbounded operators to actually produce a correct result,
|
2005-08-13 05:00:20 +00:00
|
|
|
(previously the results were artificially restricted to the
|
2005-08-08 21:06:44 +00:00
|
|
|
bounding box of whatever shape was being drawn rather than
|
|
|
|
|
extending out infinitely). The fixed operators are:
|
|
|
|
|
|
|
|
|
|
CAIRO_OPERATOR_CLEAR
|
|
|
|
|
CAIRO_OPERATOR_SOURCE
|
|
|
|
|
CAIRO_OPERATOR_OUT
|
|
|
|
|
CAIRO_OPERATOR_IN
|
|
|
|
|
CAIRO_OPERATOR_DEST_IN
|
|
|
|
|
CAIRO_OPERATOR_DEST_ATOP
|
|
|
|
|
|
|
|
|
|
* Fix cairo_mask and cairo_mask_surface to transform the mask by the
|
|
|
|
|
current transformation matrix (CTM).
|
|
|
|
|
|
|
|
|
|
* Fix cairo_set_source to lock the CTM used to transform the pattern.
|
|
|
|
|
|
|
|
|
|
* Workaround for X server Render bug involving repeating patterns
|
|
|
|
|
with a general transformation matrix.
|
|
|
|
|
|
|
|
|
|
* cairo_get_font_face fixed to return a "nil" font face object rather
|
|
|
|
|
than NULL on error.
|
|
|
|
|
|
|
|
|
|
* cairo_set_font_face fixed to not crash if given a NULL font face,
|
2005-08-13 05:00:20 +00:00
|
|
|
(which is the documented interface for restoring the default font
|
2005-08-08 21:06:44 +00:00
|
|
|
face).
|
|
|
|
|
|
|
|
|
|
* Fix xlib glyphset caching to not try to free a NULL glyph.
|
|
|
|
|
|
2005-07-28 10:51:37 +00:00
|
|
|
Snapshot 0.6.0 (2005-07-28 Carl Worth <cworth@cworth.org>)
|
|
|
|
|
==========================================================
|
|
|
|
|
API changes
|
|
|
|
|
-----------
|
2005-07-28 11:51:38 +00:00
|
|
|
* The prototypes of the following functions have changed:
|
2005-07-28 10:51:37 +00:00
|
|
|
|
2005-07-28 11:51:38 +00:00
|
|
|
cairo_xlib_surface_create_with_xrender_format
|
|
|
|
|
cairo_xlib_surface_create_for_bitmap
|
|
|
|
|
|
|
|
|
|
A Screen* parameter has been added to each. This allows the cairo
|
|
|
|
|
xlib backend to work correctly with multi-head X servers.
|
|
|
|
|
|
|
|
|
|
* The following function has been modified:
|
|
|
|
|
|
|
|
|
|
cairo_scaled_font_create
|
|
|
|
|
|
|
|
|
|
to accept a cairo_font_options_t*. See below fore more details.
|
|
|
|
|
|
|
|
|
|
* All opaque, reference-counted cairo objects have now been moved to a
|
|
|
|
|
standard error-handling scheme. The new objects to receive this
|
|
|
|
|
treatment are cairo_font_face_t, cairo_scaled_font_t, and
|
|
|
|
|
cairo_surface_t. (Previous snapshots already provided this scheme
|
|
|
|
|
for cairo_t, cairo_path_t, and cairo_pattern_t.)
|
|
|
|
|
|
|
|
|
|
This changes two functions to have a return type of void rather than
|
|
|
|
|
cairo_status_t:
|
|
|
|
|
|
|
|
|
|
cairo_scaled_font_extent
|
|
|
|
|
cairo_surface_finish
|
|
|
|
|
|
|
|
|
|
And significantly, none of the create functions for any of the
|
|
|
|
|
objects listed above will return NULL. The pointer returned from any
|
|
|
|
|
function will now always be a valid pointer and should always be
|
|
|
|
|
passed to the corresponding destroy function when finished
|
|
|
|
|
|
|
|
|
|
The simplest strategy for porting code is to switch from:
|
|
|
|
|
|
|
|
|
|
object = cairo_<object>_create ();
|
|
|
|
|
if (object == NULL)
|
|
|
|
|
goto BAILOUT;
|
|
|
|
|
|
|
|
|
|
/* act on object */
|
|
|
|
|
|
|
|
|
|
cairo_<object>_destroy (object);
|
|
|
|
|
|
|
|
|
|
to:
|
|
|
|
|
|
|
|
|
|
object = cairo_<object>_create ();
|
|
|
|
|
if (cairo_<object>_status (object))
|
|
|
|
|
goto BAILOUT;
|
|
|
|
|
|
|
|
|
|
/* act on object */
|
|
|
|
|
|
|
|
|
|
cairo_<object>_destroy (object);
|
|
|
|
|
|
|
|
|
|
But significantly, it is not required to check for an error status
|
|
|
|
|
before the "act on object" portions of the code above. All
|
|
|
|
|
operations on an object with an error status are, by definition,
|
|
|
|
|
no-ops without side effect. So new code might be written in an
|
|
|
|
|
easier-to-read style of:
|
|
|
|
|
|
|
|
|
|
object = cairo_<object>_create ();
|
|
|
|
|
|
|
|
|
|
/* act on object */
|
|
|
|
|
|
|
|
|
|
cairo_<object>_destroy (object);
|
|
|
|
|
|
|
|
|
|
with cairo_<object>_status checks placed only at strategic
|
|
|
|
|
locations. For example, passing an error object to another object,
|
|
|
|
|
(eg. cairo_set_source with an in-error pattern), will propagate the
|
|
|
|
|
error to the subsequent object (eg. the cairo_t). This means that
|
|
|
|
|
error checking can often be deferred even beyond the destruction of
|
|
|
|
|
a temporary object.
|
|
|
|
|
|
|
|
|
|
API additions
|
|
|
|
|
-------------
|
|
|
|
|
* New functions for checking the status of objects that have been
|
|
|
|
|
switched to the common error-handling scheme:
|
|
|
|
|
|
|
|
|
|
cairo_font_face_status
|
|
|
|
|
cairo_scaled_font_status
|
|
|
|
|
cairo_surface_status
|
|
|
|
|
|
|
|
|
|
* The _cairo_error function which was added in 0.5.1 has now been made
|
|
|
|
|
much more useful. In 0.5.1 only errors on cairo_t objects passed
|
|
|
|
|
through _cairo_error. Now, an error on any object should pass
|
|
|
|
|
through _cairo_error making it much more reliable as a debugging
|
|
|
|
|
mechanism for finding when an error first occurs.
|
|
|
|
|
|
|
|
|
|
* Added new font options support with a myriad of functions:
|
|
|
|
|
|
|
|
|
|
cairo_font_options_create
|
|
|
|
|
cairo_font_options_copy
|
|
|
|
|
cairo_font_options_destroy
|
|
|
|
|
|
|
|
|
|
cairo_font_options_status
|
|
|
|
|
|
|
|
|
|
cairo_font_options_merge
|
|
|
|
|
cairo_font_options_equal
|
|
|
|
|
cairo_font_options_hash
|
|
|
|
|
|
|
|
|
|
cairo_font_options_set_antialias
|
|
|
|
|
cairo_font_options_get_antialias
|
|
|
|
|
cairo_font_options_set_subpixel_order
|
|
|
|
|
cairo_font_options_get_subpixel_order
|
|
|
|
|
cairo_font_options_set_hint_style
|
|
|
|
|
cairo_font_options_get_hint_style
|
|
|
|
|
cairo_font_options_set_hint_metrics
|
|
|
|
|
cairo_font_options_get_hint_metrics
|
|
|
|
|
|
|
|
|
|
cairo_surface_get_font_options
|
|
|
|
|
|
|
|
|
|
cairo_ft_font_options_substitute
|
|
|
|
|
|
|
|
|
|
cairo_set_font_options
|
|
|
|
|
cairo_get_font_options
|
|
|
|
|
|
|
|
|
|
This new font options support allows the application to have much
|
|
|
|
|
more fine-grained control over how fonts are rendered.
|
|
|
|
|
Significantly, it also allows surface backends to have some
|
|
|
|
|
influence over the process. For example, the xlib backend now
|
|
|
|
|
queries existing Xft properties to set font option defaults.
|
|
|
|
|
|
|
|
|
|
* New function:
|
|
|
|
|
|
|
|
|
|
cairo_xlib_surface_set_drawable
|
|
|
|
|
|
2005-08-13 05:00:20 +00:00
|
|
|
which allows the target drawable for an xlib cairo_surface_t to be
|
2005-07-28 11:51:38 +00:00
|
|
|
changed to another with the same format, screen, and display. This
|
|
|
|
|
is necessary in certain double-buffering techniques.
|
|
|
|
|
|
|
|
|
|
New features
|
|
|
|
|
------------
|
|
|
|
|
* Sub-pixel text antialiasing is now supported.
|
|
|
|
|
|
|
|
|
|
Bug fixes
|
|
|
|
|
---------
|
|
|
|
|
* Fixed assertion failure in cairo_surface_create_similar when
|
|
|
|
|
application commits an error by passing a cairo_format_t rather than
|
|
|
|
|
a cairo_content_t.
|
|
|
|
|
|
|
|
|
|
* Avoid division by zero in various places (cairo-ft).
|
|
|
|
|
|
|
|
|
|
* Fix infinite loop when using non-default visuals (cairo-xlib).
|
|
|
|
|
|
|
|
|
|
* Eliminate segfault in cairo_image_surface_create_from_png_stream.
|
|
|
|
|
|
|
|
|
|
* Prevent errant sign-extension of masks on 64-bit architectures
|
|
|
|
|
(cairo-xlib and cairo-xcb).
|
|
|
|
|
|
|
|
|
|
* Other miscellaneous fixes.
|
2005-07-28 10:51:37 +00:00
|
|
|
|
2005-07-18 08:31:24 +00:00
|
|
|
Snapshot 0.5.2 (2005-07-18 Carl Worth <cworth@cworth.org>)
|
|
|
|
|
==========================================================
|
|
|
|
|
API changes
|
|
|
|
|
-----------
|
|
|
|
|
* New functions for creating patterns of a single color:
|
|
|
|
|
|
|
|
|
|
cairo_pattern_create_rgb
|
|
|
|
|
cairo_pattern_create_rgba
|
|
|
|
|
|
|
|
|
|
* Change cairo_surface_create_similar to accept a new type of
|
|
|
|
|
cairo_content_t rather than cairo_format_t:
|
|
|
|
|
|
|
|
|
|
typedef enum _cairo_content {
|
|
|
|
|
CAIRO_CONTENT_COLOR = 0x1000,
|
|
|
|
|
CAIRO_CONTENT_ALPHA = 0x2000,
|
|
|
|
|
CAIRO_CONTENT_COLOR_ALPHA = 0x3000
|
|
|
|
|
} cairo_content_t;
|
|
|
|
|
|
|
|
|
|
* Add new CAIRO_FORMAT_VALID and CAIRO_CONTENT_VALID macros.
|
|
|
|
|
|
|
|
|
|
* Remove unused status value:
|
|
|
|
|
|
|
|
|
|
CAIRO_STATUS_NO_TARGET_SURFACE
|
|
|
|
|
|
|
|
|
|
* Add new status values:
|
|
|
|
|
|
|
|
|
|
CAIRO_STATUS_INVALID_STATUS
|
|
|
|
|
|
|
|
|
|
* Require libpixman >= 0.1.5 (for necessary bug fixes)
|
|
|
|
|
|
|
|
|
|
Bug fixes
|
|
|
|
|
---------
|
|
|
|
|
* Fix cairo_surface_write_to_png for RGB24 images.
|
|
|
|
|
|
|
|
|
|
* Fix broken metrics and rendering for bitmap fonts. Add mostly
|
|
|
|
|
useless bitmap glyph transformation.
|
|
|
|
|
|
|
|
|
|
* Fix glyph caches to not eject entries that might be immediately
|
|
|
|
|
needed, (fixing intermittent crashes when rendering text).
|
|
|
|
|
|
2005-08-13 05:00:20 +00:00
|
|
|
* Fix all memory leaks found by running "make check-valgrind".
|
2005-07-18 08:31:24 +00:00
|
|
|
|
|
|
|
|
ATSUI backend changes
|
|
|
|
|
---------------------
|
|
|
|
|
* Allow building against < 10.3 SDK.
|
|
|
|
|
|
|
|
|
|
* Prevent crash on empty strings.
|
|
|
|
|
|
|
|
|
|
Glitz backend changes
|
|
|
|
|
---------------------
|
|
|
|
|
* Require glitz >= 0.4.4.
|
|
|
|
|
|
|
|
|
|
* Use frame buffer objects instead of pbuffers for accelerated
|
|
|
|
|
offscreen drawing.
|
|
|
|
|
|
|
|
|
|
* Minor improvement to gradient pattern creation.
|
|
|
|
|
|
|
|
|
|
PostScript backend fixes
|
|
|
|
|
------------------------
|
|
|
|
|
* Rewrite of the PS backend to generate more interesting output that
|
|
|
|
|
the old big-image implementation.
|
|
|
|
|
|
|
|
|
|
Win32 backend fixes
|
|
|
|
|
-------------------
|
|
|
|
|
* Implement glyph path support.
|
|
|
|
|
|
|
|
|
|
* Fix swap of blue and green values in the fill_rectangles path.
|
|
|
|
|
|
|
|
|
|
Xlib backend fixes
|
|
|
|
|
------------------
|
|
|
|
|
* Add optimization to use XCopyArea rather than XRenderComposite when
|
|
|
|
|
transforming only with an integer translation, and using SOURCE
|
|
|
|
|
operator or OVER with a source pattern without alpha.
|
|
|
|
|
|
2005-06-20 16:35:40 +00:00
|
|
|
Snapshot 0.5.1 (2005-06-20 Carl Worth <cworth@cworth.org>)
|
|
|
|
|
==========================================================
|
|
|
|
|
API changes
|
|
|
|
|
-----------
|
|
|
|
|
* Removed cairo_status_string(cairo_t*) and add
|
|
|
|
|
cairo_status_to_string(cairo_status_t) in its place. Code using
|
|
|
|
|
cairo_status_string can be ported forward as follows:
|
|
|
|
|
|
|
|
|
|
cairo_status (cr);
|
|
|
|
|
->
|
|
|
|
|
cairo_status_to_string (cairo_status (cr));
|
|
|
|
|
|
|
|
|
|
* Removed the BAD_NESTING restriction which means that two different
|
|
|
|
|
cairo_t objects can now interleave drawing to the same
|
|
|
|
|
cairo_surface_t without causing an error.
|
|
|
|
|
|
|
|
|
|
* The following functions which previously had a return type of
|
|
|
|
|
cairo_status_t now have a return type of void:
|
|
|
|
|
|
|
|
|
|
cairo_pattern_add_color_stop_rgba
|
|
|
|
|
cairo_pattern_set_matrix
|
|
|
|
|
cairo_pattern_get_matrix
|
|
|
|
|
cairo_pattern_set_extend
|
|
|
|
|
cairo_pattern_set_filter
|
|
|
|
|
|
|
|
|
|
See discussion of cairo_pattern_status below for more details.
|
|
|
|
|
|
|
|
|
|
API additions
|
|
|
|
|
-------------
|
|
|
|
|
* Improved error handling:
|
|
|
|
|
|
|
|
|
|
cairo_status_t
|
|
|
|
|
cairo_pattern_status (cairo_pattern_t *pattern);
|
|
|
|
|
|
|
|
|
|
This snapshot expands the status-based error handling scheme from
|
|
|
|
|
cairo_t to cairo_path_t and cairo_pattern_t. It also expands the
|
|
|
|
|
scheme so that object-creating functions, (cairo_create,
|
|
|
|
|
cairo_pattern_create_*, cairo_copy_path_*), are now guaranteed to
|
|
|
|
|
not return NULL. Instead, in the case of out-of-memory these
|
|
|
|
|
functions will return a static object with
|
|
|
|
|
status==CAIRO_STATUS_NO_MEMORY. The status can be checked with the
|
|
|
|
|
functions cairo_status and cairo_pattern_status, or by direct
|
|
|
|
|
inspection of the new status field in cairo_path_t.
|
|
|
|
|
|
|
|
|
|
Please note that some objects, including cairo_surface_t and all of
|
|
|
|
|
the font-related objects have not been converted to this
|
|
|
|
|
error-handling scheme.
|
|
|
|
|
|
|
|
|
|
* In addition to the above changes, a new private function has been added:
|
|
|
|
|
|
|
|
|
|
_cairo_error
|
|
|
|
|
|
|
|
|
|
This function can be used to set a breakpoint in a debugger to make
|
|
|
|
|
it easier to find programming error in cairo-using code. (Currently,
|
|
|
|
|
_cairo_error is called when any error is detected within a cairo_t
|
|
|
|
|
context, but is not called for non-cairo_t errors such as for
|
|
|
|
|
cairo_path_t and cairo_pattern_t).
|
|
|
|
|
|
|
|
|
|
* Fixed cairo_path_data_t so that its enum is visible to C++ code, (as
|
|
|
|
|
cairo_path_data_type_t).
|
|
|
|
|
|
|
|
|
|
Performance improvements
|
|
|
|
|
------------------------
|
|
|
|
|
* Made a minor performance improvement for clipping, (restrict clip
|
|
|
|
|
surface to the new intersected bounds).
|
|
|
|
|
|
|
|
|
|
* Optimize rendering of a solid source pattern with a pixel-aligned
|
|
|
|
|
rectangular path to use backend clipping rather than rasterization
|
|
|
|
|
and backend compositing.
|
|
|
|
|
|
|
|
|
|
* Optimize cairo_paint_with_alpha to defer to cairo_paint when alpha
|
|
|
|
|
is 1.0.
|
|
|
|
|
|
|
|
|
|
Bug fixes
|
|
|
|
|
---------
|
|
|
|
|
* Fixed memory leak in cairo_copy_path.
|
|
|
|
|
|
|
|
|
|
* A build fix for non-srcdir builds.
|
|
|
|
|
|
|
|
|
|
PDF backend fixes
|
|
|
|
|
-----------------
|
|
|
|
|
* New support for path-based clipping.
|
|
|
|
|
|
|
|
|
|
* Fix for text rotated to angles other than multiples of π/2.
|
|
|
|
|
|
|
|
|
|
Win32 backend fixes
|
|
|
|
|
-------------------
|
|
|
|
|
* Fix for text extents.
|
|
|
|
|
|
|
|
|
|
Xlib backend
|
|
|
|
|
------------
|
|
|
|
|
* Implemented a complex workaround for X server bug[*] related to
|
|
|
|
|
Render-based compositing with untransformed, repeating source
|
|
|
|
|
pictures. The workaround uses core Xlib when possible for
|
|
|
|
|
performance, (ie. with CAIRO_OPERATOR_SOURCE or CAIRO_OPERATOR_OVER
|
|
|
|
|
with an opaque source surface), and falls back to the pixman
|
|
|
|
|
image-based compositing otherwise.
|
|
|
|
|
|
|
|
|
|
[*] https://bugs.freedesktop.org/show_bug.cgi?id=3566
|
|
|
|
|
|
|
|
|
|
* Various bug fixes, particularly in the fallback paths.
|
|
|
|
|
|
2005-05-17 18:39:56 +00:00
|
|
|
Snapshot 0.5.0 (2005-05-17 Carl Worth <cworth@cworth.org>)
|
|
|
|
|
==========================================================
|
|
|
|
|
This is a pretty big, and fairly significant snapshot. It represents
|
|
|
|
|
between 2 and 3 months of solid work from a lot of people on improving
|
|
|
|
|
the API as much as possible. I'd like to express my appreciation and
|
|
|
|
|
congratulations to everyone who has worked on the big API Shakeup,
|
|
|
|
|
(whether in email battles over names, or fixing my silly bugs).
|
|
|
|
|
|
|
|
|
|
This snapshot will require some effort on the part of users, since
|
|
|
|
|
there are a _lot_ of API changes (ie. no cairo program ever written is
|
|
|
|
|
safe --- they're all broken now in at least one way). But, in spite of
|
|
|
|
|
that, we do encourage everyone to move their code to this snapshot as
|
|
|
|
|
soon as possible. And we're doing everything we can think of to make
|
|
|
|
|
the transition as smooth as possible.
|
|
|
|
|
|
|
|
|
|
The idea behind 0.5 is that we've tried to make every good API change
|
|
|
|
|
we could want now, and get them all done with. That is, between now
|
|
|
|
|
and the 1.0 release of cairo, we expect very few new API changes,
|
|
|
|
|
(though some will certainly sneak in). We will have some significant
|
|
|
|
|
additions, but the pain of moving code from cairo 0.4 to cairo 0.5
|
|
|
|
|
should be a one time experience, and things should be much smoother as
|
|
|
|
|
we continue to move toward cairo 1.0.
|
|
|
|
|
|
|
|
|
|
And with so many changes coming out for the first time in this 0.5
|
|
|
|
|
release, we really do need a lot of people trying this out to make
|
|
|
|
|
sure the ideas are solid before we freeze the API in preparation for
|
|
|
|
|
the 1.0 release.
|
|
|
|
|
|
|
|
|
|
OK, enough introduction. Here is a (not-quite-complete) description of
|
|
|
|
|
the API removals, changes and additions in this snapshot, (compared to
|
|
|
|
|
0.4.0)
|
|
|
|
|
|
|
|
|
|
API removals
|
|
|
|
|
============
|
|
|
|
|
The following public functions have been removed:
|
|
|
|
|
|
|
|
|
|
- cairo_set_target_*
|
|
|
|
|
|
|
|
|
|
This is a big change. See the description of cairo_create in
|
|
|
|
|
the API changes section for how to deal with this.
|
|
|
|
|
|
|
|
|
|
- cairo_set_alpha
|
|
|
|
|
|
|
|
|
|
Alpha blending hasn't gone away; there's just a much more
|
|
|
|
|
unified rendering model now. Almost all uses of
|
|
|
|
|
cairo_set_alpha will be trivially replaced with
|
|
|
|
|
cairo_set_source_rgba and a few others will be replaced just
|
|
|
|
|
as easily with cairo_paint_with_alpha.
|
|
|
|
|
|
|
|
|
|
- cairo_show_surface
|
|
|
|
|
|
|
|
|
|
Another useful function that we realized was muddling up the
|
|
|
|
|
rendering model. The replacement is quite easy:
|
|
|
|
|
cairo_set_source_surface and cairo_paint.
|
|
|
|
|
|
|
|
|
|
- cairo_matrix_create
|
|
|
|
|
- cairo_matrix_destroy
|
|
|
|
|
- cairo_matrix_copy
|
|
|
|
|
- cairo_matrix_get_affine
|
|
|
|
|
|
|
|
|
|
These functions supported an opaque cairo_matrix_t. We now
|
|
|
|
|
have an exposed cairo_matrix_t structure, so these can be
|
|
|
|
|
dropped.
|
|
|
|
|
|
|
|
|
|
- cairo_surface_set_repeat
|
|
|
|
|
- cairo_surface_set_matrix
|
|
|
|
|
- cairo_surface_set_filter
|
|
|
|
|
|
|
|
|
|
These properties don't belong on surfaces. If you were using
|
|
|
|
|
them, you'll just want to instead use
|
|
|
|
|
cairo_pattern_create_for_surface and then set these properties
|
|
|
|
|
on the pattern.
|
|
|
|
|
|
|
|
|
|
- cairo_copy
|
|
|
|
|
|
|
|
|
|
This was a confusing function and hopefully nobody will miss
|
|
|
|
|
it. But if you really don't find cairo_save/restore adequate,
|
|
|
|
|
let us know and we have another idea for a potential
|
|
|
|
|
replacement.
|
|
|
|
|
|
|
|
|
|
And while we're on the subject of removals, we carefully tightened up
|
|
|
|
|
the cairo header files so they no longer gratuitously include header
|
|
|
|
|
files that are not strictly necessary, (stdio.h, stdint.h, pixman.h,
|
|
|
|
|
Xrender.h, etc. and their dependencies). This may lead to some
|
|
|
|
|
surprising errors, so keep your eyes open for that.
|
|
|
|
|
|
|
|
|
|
API changes
|
|
|
|
|
===========
|
|
|
|
|
Here are some of the API changes that have occurred:
|
|
|
|
|
|
|
|
|
|
~ cairo_create(void) -> cairo_create(cairo_surface_t *)
|
|
|
|
|
|
|
|
|
|
This is the big change that breaks every program. The ability
|
|
|
|
|
to re-target a cairo_t was not particularly useful, but it did
|
|
|
|
|
introduce a lot of muddy semantic questions. To eliminate
|
|
|
|
|
that, cairo_create now requires its target surface to be
|
|
|
|
|
passed in at creation time. This isn't too hard to cope with
|
|
|
|
|
as the typical first operation after cairo_create was often
|
|
|
|
|
cairo_set_target_foo. So the order of those two swap and the
|
|
|
|
|
application instead has cairo_foo_surface_create, then
|
|
|
|
|
cairo_create.
|
|
|
|
|
|
|
|
|
|
~ cairo_current_* -> cairo_get_*
|
|
|
|
|
|
|
|
|
|
We had a strange mixture of cairo_get and cairo_current
|
|
|
|
|
functions. They've all been standardized on cairo_get, (though
|
|
|
|
|
note one is cairo_get_current_point).
|
|
|
|
|
|
|
|
|
|
~ CAIRO_OPERATOR_SRC -> CAIRO_OPERATOR_SOURCE
|
|
|
|
|
~ CAIRO_OPERATOR_OVER_REVERSE -> CAIRO_OPERATOR_DEST_OVER
|
|
|
|
|
|
|
|
|
|
Many of the cairo_operator_t symbolic values were renamed to
|
|
|
|
|
reduce the amount of abbreviation. The confusing "OP_REVERSE"
|
|
|
|
|
naming was also changed to use "DEST_OP" instead which is
|
|
|
|
|
easier to read and has wider acceptance in other
|
|
|
|
|
libraries/languages.
|
|
|
|
|
|
|
|
|
|
~ cairo_set_pattern -> cairo_set_source
|
|
|
|
|
~ cairo_set_rgb_color -> cairo_set_source_rgb
|
|
|
|
|
|
|
|
|
|
All of the various functions that changed the source
|
|
|
|
|
color/pattern were unified to use cairo_set_source names to
|
|
|
|
|
make the relation more clear.
|
|
|
|
|
|
|
|
|
|
~ cairo_transform_point -> cairo_user_to_device
|
|
|
|
|
~ cairo_transform_distance -> cairo_user_to_device_distance
|
|
|
|
|
~ cairo_inverse_transform_point -> cairo_device_to_user
|
|
|
|
|
~ cairo_inverse_transform_distance -> cairo_device_to_user_distance
|
|
|
|
|
|
|
|
|
|
These names just seemed a lot more clear.
|
|
|
|
|
|
|
|
|
|
~ cairo_init_clip -> cairo_reset_clip
|
|
|
|
|
~ cairo_concat_matrix -> cairo_transform
|
|
|
|
|
|
|
|
|
|
More abbreviation elimination
|
|
|
|
|
|
|
|
|
|
~ cairo_current_path -> cairo_copy_path
|
|
|
|
|
~ cairo_current_path_flat -> cairo_copy_path_flat
|
|
|
|
|
|
|
|
|
|
The former mechanism for examining the current path was a
|
|
|
|
|
function that required 3 or 4 callbacks. This was more
|
|
|
|
|
complexity than warranted in most situations. The new
|
|
|
|
|
cairo_copy_path function copies the current path into an
|
|
|
|
|
exposed data structure, and the documentation provides a
|
|
|
|
|
convenient idiom for navigating the path data.
|
|
|
|
|
|
|
|
|
|
API additions
|
|
|
|
|
-------------
|
|
|
|
|
+ cairo_paint
|
|
|
|
|
|
|
|
|
|
A generalized version of the painting operators cairo_stroke
|
|
|
|
|
and cairo_fill. The cairo_paint call applies the source paint
|
|
|
|
|
everywhere within the current clip region. Very useful for
|
|
|
|
|
clearing a surface to a solid color, or painting an image,
|
|
|
|
|
(see cairo_set_source_surface).
|
|
|
|
|
|
|
|
|
|
+ cairo_paint_with_alpha
|
|
|
|
|
|
|
|
|
|
Like cairo_paint but applying some alpha to the source,
|
|
|
|
|
(making the source paint translucent, eg. to blend an image on
|
|
|
|
|
top of another).
|
|
|
|
|
|
|
|
|
|
+ cairo_mask
|
|
|
|
|
|
|
|
|
|
A more generalized version of cairo_paint_with_alpha which
|
|
|
|
|
allows a pattern to specify the amount of translucence at each
|
|
|
|
|
point rather than using a constant value everywhere.
|
|
|
|
|
|
|
|
|
|
+ cairo_mask_surface
|
|
|
|
|
|
|
|
|
|
A convenience function on cairo_mask for when the mask pattern
|
|
|
|
|
is already contained within a surface.
|
|
|
|
|
|
|
|
|
|
+ cairo_surface_set_user_data
|
|
|
|
|
+ cairo_surface_get_user_data
|
|
|
|
|
+ cairo_font_face_set_user_data
|
|
|
|
|
+ cairo_font_face_get_user_data
|
|
|
|
|
|
|
|
|
|
Associate arbitrary data with a surface or font face for later
|
|
|
|
|
retrieval. Get notified when a surface or font face object is
|
|
|
|
|
destroyed.
|
|
|
|
|
|
|
|
|
|
+ cairo_surface_finish
|
|
|
|
|
|
|
|
|
|
Allows the user to instruct cairo to finish all of its
|
|
|
|
|
operations for a given surface. This provides a safe point for
|
|
|
|
|
doing things such as flushing and closing files that the
|
|
|
|
|
surface may have had open for writing.
|
|
|
|
|
|
|
|
|
|
+ cairo_fill_preserve
|
|
|
|
|
+ cairo_stroke_preserve
|
|
|
|
|
+ cairo_clip_preserve
|
|
|
|
|
|
|
|
|
|
One interesting change in cairo is that the path is no longer
|
|
|
|
|
part of the graphics state managed by
|
|
|
|
|
cairo_save/restore. This allows functions to construct paths
|
|
|
|
|
without interfering with the graphics state. But it prevents
|
|
|
|
|
the traditional idiom for fill-and-stroke:
|
|
|
|
|
|
|
|
|
|
cairo_save; cairo_fill; cairo_restore; cairo_stroke
|
|
|
|
|
|
|
|
|
|
Instead we know have alternate versions cairo cairo_fill,
|
|
|
|
|
cairo_stroke, and cairo_clip that preserve the current path
|
|
|
|
|
rather than consuming it. So the idiom now becomes simply:
|
|
|
|
|
|
|
|
|
|
cairo_fill_preserve; cairo_stroke
|
|
|
|
|
|
|
|
|
|
+ cairo_surface_write_to_png
|
|
|
|
|
+ cairo_surface_write_to_png_stream
|
|
|
|
|
|
|
|
|
|
In place of a single PNG backend, now a surface created
|
|
|
|
|
through any backend (except PDF currently) can be written out
|
|
|
|
|
to a PNG image.
|
|
|
|
|
|
|
|
|
|
+ cairo_image_surface_create_from_png
|
|
|
|
|
+ cairo_image_surface_create_from_png_stream
|
|
|
|
|
|
|
|
|
|
And its just as easy to load a PNG image into a surface as well.
|
|
|
|
|
|
|
|
|
|
+ cairo_append_path
|
|
|
|
|
|
|
|
|
|
With the new, exposed path data structure, it's now possible
|
|
|
|
|
to append bulk path data to the current path, (rather than
|
|
|
|
|
issuing a long sequence of cairo_move_to/line_to/curve_to
|
|
|
|
|
function calls).
|
|
|
|
|
|
|
|
|
|
Xlib and XCB backends
|
|
|
|
|
---------------------
|
|
|
|
|
|
|
|
|
|
Any cairo_format_t and Colormap arguments have been dropped from
|
|
|
|
|
cairo_xlib_surface_create. There are also two new
|
|
|
|
|
cairo_xlib|xcb_surface_create functions:
|
|
|
|
|
|
|
|
|
|
cairo_xlib|xcb_surface_create_for_bitmap
|
|
|
|
|
(Particular for creating A1 surfaces)
|
|
|
|
|
cairo_xlib|xcb_surface_create_with_xrender_format
|
|
|
|
|
(For any other surface types, not described by a Visual*)
|
|
|
|
|
|
|
|
|
|
All of these surface create functions now accept width and height. In
|
|
|
|
|
addition, there are new cairo_xlib|xcb_surface_set_size functions
|
|
|
|
|
which must be called each time a window that is underlying a surface
|
|
|
|
|
changes size.
|
|
|
|
|
|
|
|
|
|
Print backends (PS and PDF)
|
|
|
|
|
---------------------------
|
|
|
|
|
The old FILE* based interfaces have been eliminated. In their place we
|
|
|
|
|
have two different functions. One accepts a simple const char
|
|
|
|
|
*filename. The other is a more general function which accepts a
|
|
|
|
|
callback write function and a void* closure. This should allow the
|
|
|
|
|
flexibility needed to hook up with various stream object in many
|
|
|
|
|
languages.
|
|
|
|
|
|
|
|
|
|
In addition, when specifying the surface size during construction, the
|
|
|
|
|
units are now device-space units (ie. points) rather than inches. This
|
|
|
|
|
provides consistency with all the other surface types and also makes
|
|
|
|
|
it much easier to reason about the size of the surface when drawing to
|
|
|
|
|
it with the default identity matrix.
|
|
|
|
|
|
|
|
|
|
Finally, the DPI parameters, which are only needed to control the
|
|
|
|
|
quality of fallbacks, have been made optional. Nothing is required
|
|
|
|
|
during surface_create (300 DPI is assumed) and
|
|
|
|
|
cairo_ps|pdf_surface_set_dpi can be used to set alternate values if
|
|
|
|
|
needed.
|
|
|
|
|
|
|
|
|
|
Font system
|
|
|
|
|
-----------
|
|
|
|
|
Owen very graciously listened to feedback after the big font rework he
|
|
|
|
|
had done for 0.4, and came up with way to improve it even more. In 0.4
|
|
|
|
|
there was a cairo_font_t that was always pre-scaled. Now, there is an
|
|
|
|
|
unscaled cairo_font_face_t which is easier to construct, (eg. no
|
|
|
|
|
scaling matrix required) and work with, (it can be scaled and
|
|
|
|
|
transformed after being set on the graphics state). And the font size
|
|
|
|
|
manipulation functions are much easier. You can set an explicit size
|
|
|
|
|
and read/modify/write the font matrix with:
|
|
|
|
|
|
|
|
|
|
cairo_set_font_size
|
|
|
|
|
cairo_get_font_matrix
|
|
|
|
|
cairo_set_font_matrix
|
|
|
|
|
|
|
|
|
|
(Previously you could only multiply in a scale factor or a matrix.) A
|
|
|
|
|
pleasant side effect is that we can (and do) now have a default font
|
|
|
|
|
size that is reasonable, as opposed to the old default height of one
|
|
|
|
|
device-space unit which was useless until scaled.
|
|
|
|
|
|
|
|
|
|
Of course, the old pre-scaled font had allowed some performance
|
|
|
|
|
benefits when getting many metrics for a font. Those benefits are
|
|
|
|
|
still made available through the new cairo_scaled_font_t. And a
|
|
|
|
|
cairo_font_face_t can be "promoted" to a cairo_scaled_font_t by
|
|
|
|
|
suppling a font_matrix and the desired CTM.
|
|
|
|
|
|
|
|
|
|
Quartz backend
|
|
|
|
|
--------------
|
|
|
|
|
Tim Rowley put in the work to bring the Quartz backend back after it
|
|
|
|
|
had been disabled in the 0.4.0 snapshot. He was not able to bring back
|
|
|
|
|
the function that allows one to create a cairo_font_t from an ATSUI
|
|
|
|
|
style:
|
|
|
|
|
|
|
|
|
|
cairo_font_t *
|
|
|
|
|
cairo_atsui_font_create (ATSUStyle style);
|
|
|
|
|
|
|
|
|
|
because he didn't have a test case for it. If you care about this
|
|
|
|
|
function, please provide a fairly minimal test and we'll try to bring
|
|
|
|
|
it back in an upcoming snapshot.
|
|
|
|
|
|
2005-03-08 17:36:24 +00:00
|
|
|
Snapshot 0.4.0 (2005-03-08 Carl Worth <cworth@cworth.org>)
|
|
|
|
|
==========================================================
|
|
|
|
|
New documentation
|
|
|
|
|
-----------------
|
|
|
|
|
Owen Taylor has converted cairo's documentation system to gtk-doc and
|
|
|
|
|
has begun some long-needed work on the documentation, which can now be
|
|
|
|
|
viewed online here:
|
|
|
|
|
|
|
|
|
|
http://cairographics.org/manual/
|
|
|
|
|
|
|
|
|
|
New backend: win32
|
|
|
|
|
------------------
|
|
|
|
|
This is the first snapshot to include a functional win32 backend,
|
|
|
|
|
(thanks to Owen Taylor). The interface is as follows:
|
|
|
|
|
|
|
|
|
|
#include <cairo-win32.h>
|
|
|
|
|
|
|
|
|
|
void
|
|
|
|
|
cairo_set_target_win32 (cairo_t *cr,
|
|
|
|
|
HDC hdc);
|
|
|
|
|
|
|
|
|
|
cairo_surface_t *
|
|
|
|
|
cairo_win32_surface_create (HDC hdc);
|
|
|
|
|
|
|
|
|
|
cairo_font_t *
|
|
|
|
|
cairo_win32_font_create_for_logfontw (LOGFONTW *logfont,
|
|
|
|
|
cairo_matrix_t *scale);
|
|
|
|
|
|
|
|
|
|
cairo_status_t
|
|
|
|
|
cairo_win32_font_select_font (cairo_font_t *font,
|
|
|
|
|
HDC hdc);
|
|
|
|
|
|
|
|
|
|
void
|
|
|
|
|
cairo_win32_font_done_font (cairo_font_t *font);
|
|
|
|
|
|
|
|
|
|
double
|
|
|
|
|
cairo_win32_font_get_scale_factor (cairo_font_t *font);
|
2005-03-08 19:25:39 +00:00
|
|
|
|
|
|
|
|
And see also the documentation at:
|
|
|
|
|
|
|
|
|
|
http://cairographics.org/manual/cairo-Microsoft-Windows-Backend.html
|
2005-03-08 17:36:24 +00:00
|
|
|
|
|
|
|
|
Disabled backend: quartz
|
|
|
|
|
------------------------
|
|
|
|
|
Unfortunately, the quartz backend code is currently out of date with
|
|
|
|
|
respect to some recent backend interface changes. So, the quartz
|
|
|
|
|
backend is disabled in this snapshot.
|
|
|
|
|
|
|
|
|
|
If the quartz backend is brought up-to-date before the next snapshot,
|
|
|
|
|
we would be glad to make a 0.4.1 snapshot that re-enables it, (we do
|
|
|
|
|
not expect many more big backend interface changes).
|
|
|
|
|
|
|
|
|
|
API Changes
|
|
|
|
|
-----------
|
|
|
|
|
The font system has been revamped, (as Owen Taylor's work with
|
|
|
|
|
integrating pango and cairo gave us the first serious usage of the
|
|
|
|
|
non-toy font API).
|
|
|
|
|
|
|
|
|
|
One fundamental, user-visible change is that the cairo_font_t object
|
|
|
|
|
now represents a font that is scaled to a particular device
|
|
|
|
|
resolution. Further changes are described below.
|
|
|
|
|
|
|
|
|
|
cairo.h
|
|
|
|
|
-------
|
|
|
|
|
Removed cairo_font_set_transform and cairo_font_current_transform.
|
|
|
|
|
|
|
|
|
|
Added cairo_font_extents and cairo_font_glyph_extents. See
|
|
|
|
|
documentation for details:
|
|
|
|
|
|
|
|
|
|
http://cairographics.org/manual/cairo-cairo-t.html#cairo-font-extents
|
|
|
|
|
|
|
|
|
|
cairo-ft.h
|
|
|
|
|
----------
|
|
|
|
|
The cairo_ft_font API changed considerably. Please see the
|
|
|
|
|
documentation for details:
|
|
|
|
|
|
|
|
|
|
http://cairographics.org/manual/cairo-FreeType-Fonts.html
|
|
|
|
|
|
|
|
|
|
Performance
|
|
|
|
|
-----------
|
|
|
|
|
Make the fast-path clipping (pixel-aligned rectangles) faster.
|
|
|
|
|
|
|
|
|
|
Add optimization for applying a constant alpha to a pattern.
|
|
|
|
|
|
|
|
|
|
Optimize gradients that are horizontal or vertical in device space.
|
|
|
|
|
|
|
|
|
|
Xlib: When RENDER is not available, use image surfaces for
|
|
|
|
|
intermediate surfaces rather than xlib surfaces.
|
|
|
|
|
|
|
|
|
|
Backend-specific changes
|
|
|
|
|
------------------------
|
|
|
|
|
Glitz
|
|
|
|
|
-----
|
|
|
|
|
Major update to glitz backend. The output quality should now be just
|
|
|
|
|
as good as the image and xlib backends.
|
|
|
|
|
|
|
|
|
|
Track changes to glitz 0.4.0.
|
|
|
|
|
|
|
|
|
|
PDF
|
|
|
|
|
---
|
|
|
|
|
Various improvements to produce more conformant output.
|
|
|
|
|
|
|
|
|
|
Internals
|
|
|
|
|
---------
|
|
|
|
|
David Reveman contributed a large re-work of the cairo_pattern_t
|
|
|
|
|
implementation, providing cleaner code and more optimization
|
|
|
|
|
opportunities.
|
|
|
|
|
|
|
|
|
|
Backend interface changes
|
|
|
|
|
-------------------------
|
|
|
|
|
Rework backend interface to accept patterns, not surfaces for source
|
|
|
|
|
and mask.
|
|
|
|
|
|
|
|
|
|
Remove set_matrix, set_filter, and set_repeat functions.
|
|
|
|
|
|
|
|
|
|
More sophisticated backend interface for image fallbacks,
|
|
|
|
|
({acquire,release}_{source,dest}_image() and clone_similar).
|
|
|
|
|
|
|
|
|
|
Bug fixes
|
|
|
|
|
---------
|
|
|
|
|
Only install header files for backends that have been compiled.
|
|
|
|
|
|
|
|
|
|
Fixed some rounding errors leading to incorrectly placed glyphs.
|
|
|
|
|
|
|
|
|
|
Many other minor fixes.
|
|
|
|
|
|
2005-01-21 12:48:11 +00:00
|
|
|
Snapshot 0.3.0 (2005-01-21 Carl Worth <cworth@cworth.org>)
|
|
|
|
|
==========================================================
|
|
|
|
|
Major API changes
|
|
|
|
|
-----------------
|
|
|
|
|
1) The public header files will no longer be directly installed into
|
|
|
|
|
the system include directory. They will now be installed in a
|
|
|
|
|
subdirectory named "cairo", (eg. in /usr/include/cairo rather than
|
|
|
|
|
in /usr/include).
|
|
|
|
|
|
|
|
|
|
As always, the easiest way for applications to discover the
|
|
|
|
|
location of the header file is to let pkg-config generate the
|
|
|
|
|
necessary -I CFLAGS and -L/-l LDFLAGS. For example:
|
|
|
|
|
|
|
|
|
|
cc `pkg-config --cflags --libs cairo` -o foo foo.c
|
|
|
|
|
|
|
|
|
|
IMPORTANT: Users with old versions of cairo installed will need to
|
|
|
|
|
manually remove cairo.h and cairo-features.h from the
|
|
|
|
|
system include directories in order to prevent the old
|
|
|
|
|
headers from being used in preference to the new ones.
|
|
|
|
|
|
|
|
|
|
2) The backend-specific portions of the old monolithic cairo.h have
|
|
|
|
|
been split out into individual public header files. The new files
|
|
|
|
|
are:
|
|
|
|
|
|
|
|
|
|
cairo-atsui.h
|
|
|
|
|
cairo-ft.h
|
|
|
|
|
cairo-glitz.h
|
|
|
|
|
cairo-pdf.h
|
|
|
|
|
cairo-png.h
|
|
|
|
|
cairo-ps.h
|
|
|
|
|
cairo-quartz.h
|
|
|
|
|
cairo-xcb.h
|
|
|
|
|
cairo-xlib.h
|
|
|
|
|
|
|
|
|
|
Applications will need to be modified to explicitly include the new
|
|
|
|
|
header files where appropriate.
|
|
|
|
|
|
|
|
|
|
3) There are two new graphics backends in this snapshot, a PDF
|
|
|
|
|
backend, and a Quartz backend. There is also one new font backend,
|
|
|
|
|
ATSUI.
|
|
|
|
|
|
|
|
|
|
PDF backend
|
|
|
|
|
-----------
|
|
|
|
|
Kristian Høgsberg has contributed a new backend to allow cairo-based
|
|
|
|
|
applications to generate PDF output. The interface for creating a PDF
|
|
|
|
|
surface is similar to that of the PS backend, as can be seen in
|
|
|
|
|
cairo-pdf.h:
|
|
|
|
|
|
|
|
|
|
void
|
|
|
|
|
cairo_set_target_pdf (cairo_t *cr,
|
|
|
|
|
FILE *file,
|
|
|
|
|
double width_inches,
|
|
|
|
|
double height_inches,
|
|
|
|
|
double x_pixels_per_inch,
|
|
|
|
|
double y_pixels_per_inch);
|
|
|
|
|
|
|
|
|
|
cairo_surface_t *
|
|
|
|
|
cairo_pdf_surface_create (FILE *file,
|
|
|
|
|
double width_inches,
|
|
|
|
|
double height_inches,
|
|
|
|
|
double x_pixels_per_inch,
|
|
|
|
|
double y_pixels_per_inch);
|
|
|
|
|
|
|
|
|
|
Once a PDF surface has been created, applications can draw to it as
|
|
|
|
|
any other cairo surface.
|
|
|
|
|
|
|
|
|
|
This code is still a bit rough around the edges, and does not yet
|
|
|
|
|
support clipping, surface patterns, or transparent gradients. Text
|
|
|
|
|
only works with TrueType fonts at this point and only black text is
|
|
|
|
|
supported. Also, the size of the generated PDF files is currently
|
|
|
|
|
quite big.
|
|
|
|
|
|
|
|
|
|
Kristian is still actively developing this backend, so watch this
|
|
|
|
|
space for future progress.
|
|
|
|
|
|
|
|
|
|
Quartz backend
|
|
|
|
|
--------------
|
|
|
|
|
Calum Robinson has contributed a new backend to allow cairo
|
|
|
|
|
applications to target native Mac OS X windows through the Quartz
|
|
|
|
|
API. Geoff Norton integrated this backend into the current
|
|
|
|
|
configure-based build system, while Calum also provided Xcode build
|
|
|
|
|
support in the separate "macosx" module available in CVS.
|
|
|
|
|
|
|
|
|
|
The new interface, available in cairo-quartz.h, is as follows:
|
|
|
|
|
|
|
|
|
|
void
|
|
|
|
|
cairo_set_target_quartz_context (cairo_t *cr,
|
|
|
|
|
CGContextRef context,
|
|
|
|
|
int width,
|
|
|
|
|
int height);
|
|
|
|
|
|
|
|
|
|
cairo_surface_t *
|
|
|
|
|
cairo_quartz_surface_create (CGContextRef context,
|
|
|
|
|
int width,
|
|
|
|
|
int height);
|
|
|
|
|
|
|
|
|
|
There is an example program available in CVS in cairo-demo/quartz. It
|
|
|
|
|
is a port of Keith Packard's fdclock program originally written for
|
|
|
|
|
the xlib backend. A screenshot of this program running on Mac OS X is
|
|
|
|
|
available here:
|
|
|
|
|
|
|
|
|
|
http://cairographics.org/~cworth/images/fdclock-quartz.png
|
|
|
|
|
|
|
|
|
|
ATSUI font backend
|
|
|
|
|
------------------
|
|
|
|
|
This new font backend complements the Quartz backend by allowing
|
|
|
|
|
applications to use native font selection on Mac OS X. The interface
|
|
|
|
|
is a single new function:
|
|
|
|
|
|
|
|
|
|
cairo_font_t *
|
|
|
|
|
cairo_atsui_font_create (ATSUStyle style);
|
|
|
|
|
|
|
|
|
|
Minor API changes
|
|
|
|
|
-----------------
|
|
|
|
|
Prototype for non-existent function "cairo_ft_font_destroy" removed.
|
|
|
|
|
|
|
|
|
|
Now depends on libpixman 0.1.2 or newer, (0.1.3 is being released
|
|
|
|
|
concurrently and has some useful performance improvements).
|
|
|
|
|
|
|
|
|
|
Default paint color is now opaque black, (was opaque white). Default
|
|
|
|
|
background color is transparent (as before).
|
|
|
|
|
|
|
|
|
|
Renamed "struct cairo" to "struct _cairo" to free up the word "cairo"
|
|
|
|
|
from the C++ identifier name space.
|
|
|
|
|
|
|
|
|
|
Functions returning multiple return values through provided pointers,
|
|
|
|
|
(cairo_matrix_get_affine, cairo_current_point, and
|
|
|
|
|
cairo_current_color_rgb), will now accept NULL for values the user
|
|
|
|
|
wants to ignore.
|
|
|
|
|
|
|
|
|
|
CAIRO_HAS_FREETYPE_FONT has now been renamed to CAIRO_HAS_FT_FONT.
|
|
|
|
|
|
|
|
|
|
Performance improvements
|
|
|
|
|
------------------------
|
|
|
|
|
Alexander Larsson provided some fantastic performance improvements
|
|
|
|
|
yielding a 10000% performance improvement in his application, (when
|
|
|
|
|
also including his performance work in libpixman-0.1.3). These include
|
|
|
|
|
|
|
|
|
|
* Fixed handling of cache misses.
|
|
|
|
|
|
|
|
|
|
* Creating intermediate clip surfaces at the minimal size required.
|
|
|
|
|
|
|
|
|
|
* Eliminating roundtrips when creating intermediate Xlib surfaces.
|
|
|
|
|
|
|
|
|
|
Implementation
|
|
|
|
|
--------------
|
|
|
|
|
Major re-work of font metrics system by Keith Packard. Font metrics
|
|
|
|
|
should now be much more reliable.
|
|
|
|
|
|
|
|
|
|
Glitz backend
|
|
|
|
|
-------------
|
|
|
|
|
Updated for glitz-0.3.0.
|
|
|
|
|
Bug fixes in reference counting.
|
|
|
|
|
|
|
|
|
|
Test suite
|
|
|
|
|
----------
|
|
|
|
|
New tests for cache crashing, rotating text, improper filling of
|
|
|
|
|
complex polygons, and leaky rasterization.
|
|
|
|
|
|
|
|
|
|
Bug fixes
|
|
|
|
|
---------
|
|
|
|
|
Fixed assertion failure when selecting the same font multiple times in
|
|
|
|
|
sequence.
|
|
|
|
|
|
|
|
|
|
Fixed reference counting so cache_destroy functions work.
|
|
|
|
|
|
|
|
|
|
Remove unintended copyright statement from files generated with
|
|
|
|
|
PostScript backend.
|
|
|
|
|
|
|
|
|
|
Fixed to eliminate new warnings from gcc 3.4 and gcc 4.
|
|
|
|
|
|
2004-10-27 13:13:39 +00:00
|
|
|
Snapshot 0.2.0 (2004-10-27 Carl Worth <cworth@cworth.org>)
|
|
|
|
|
===========================================================
|
|
|
|
|
New license: LGPL/MPL
|
|
|
|
|
---------------------
|
|
|
|
|
The most significant news with this release is that the license of
|
|
|
|
|
cairo has changed. It is now dual-licensed under the LGPL and the
|
|
|
|
|
MPL. For details see the COPYING file as well as COPYING-LGPL-2.1 and
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COPYING-MPL-1.1.
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I express my thanks to everyone involved in the license change process
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for their patience and support!
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New font and glyph internals
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----------------------------
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Graydon Hoare has put a tremendous amount of work into new internals
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for handling fonts and glyphs, including caches where appropriate.
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This work has no impact on the user-level API, but should result in
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great performance improvements for applications using text.
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New test suite
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--------------
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This snapshot of cairo includes a (small) test suite in
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cairo/test. The tests can be run with "make check". The test suite was
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designed to make it very easy to add new tests, and we hope to see
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many contributions here. As you find bugs, please try adding a minimal
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test case to the suite, and submit it with the bug report to the
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cairo@cairographics.org mailing list. This will make it much easier
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for us to track progress in fixing bugs.
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New name for glitz backend
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--------------------------
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The gl backend has now been renamed to the glitz backend. This means
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that the following names have changed:
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CAIRO_HAS_GL_SURFACE -> CAIRO_HAS_GLITZ_SURFACE
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cairo_set_target_gl -> cairo_set_target_glitz
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cairo_gl_surface_create -> cairo_glitz_surface_create
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This change obviously breaks backwards compatibility for applications
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using the old gl backend.
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Up-to-date with latest glitz snapshots
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--------------------------------------
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This snapshot of cairo is now up to date with the latest glitz
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snapshot, (currently 0.2.3). We know that the latest cairo and glitz
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snapshots have been incompatible for a very long time. We've finally
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fixed that now and we're determined to not let that happen again.
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2004-10-27 13:19:39 +00:00
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Revert some tessellation regression bugs
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----------------------------------------
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People that have been seeing some tessellation bugs, (eg. leaked
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fills), in the CVS version of cairo may have better luck with this
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release. A change since the last snapshot was identified to trigger
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some of these bugs and was reverted before making the snapshot. The
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behavior should be the same as the previous (0.1.23) snapshot.
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2004-10-27 13:13:39 +00:00
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Miscellaneous changes
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---------------------
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Changed CAIRO_FILTER_DEFAULT to CAIRO_FILTER_BEST to make gradients
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easier.
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Track XCB API change regarding iterators.
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Various bug fixes
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-----------------
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Fix calculation of required number of vertices for pen.
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Fix to avoid zero-dimensioned pixmaps.
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Fix broken sort of pen vertices.
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Fix bug when cairo_show_text called with a NULL string.
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Fix clipping bugs.
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Fix bug in computing image length with XCB.
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Fix infinite loop bug in cairo_arc.
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Fix memory management interactions with libpixman.
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2004-05-24 02:28:05 +00:00
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2004-05-11 08:19:47 +00:00
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Snapshot 0.1.23 (2004-05-11 Carl Worth <cworth@isi.edu>)
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========================================================
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Fixes for gcc 3.4
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-----------------
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Fix prototype mismatches so that cairo can be built by gcc 3.4.
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Updates to track glitz
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----------------------
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Various fixes to support the latest glitz snapshot (0.1.2).
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Gradient updates
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----------------
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Radial gradients now support both inner and outer circles.
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Transformed linear gradients are now properly handled.
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Fixes for extend type reflect.
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Glitz updates
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-------------
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Converted shading routines to use fixed point values and introduced a
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shading operator structure for more efficient shading calculations.
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Support compositing with mask surface when mask is solid or
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multi-texturing is available.
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PNG backend cleanups
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--------------------
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Fix output to properly compensate for pre-multiplied alpha format in cairo.
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Add support for A8 and A1 image formats.
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Bug fixes
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---------
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Avoid crash or infinite loop on null strings and degeneratively short
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splines.
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New? bugs in cairo_clip
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-----------------------
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There are some fairly serious bugs in cairo_clip. It is sometimes
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causing an incorrect result. And even when it does work, it is
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sometimes so slow as to be unusable. Some of these bugs may not be
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new, (indeed cairo_clip has only ever had a braindead-slow
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implementation), but I think they're worth mentioning here.
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2004-04-16 08:56:45 +00:00
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Snapshot 0.1.22 (2004-04-16 Carl Worth <cworth@isi.edu>)
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========================================================
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Cairo was updated to track the changes in libpixman, and now depends
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on libpixman version 0.1.1.
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2004-04-09 14:30:38 +00:00
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Snapshot 0.1.21 (2004-04-09 David Reveman <c99drn@cs.umu.se>)
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=============================================================
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New OpenGL backend
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------------------
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The OpenGL backend provides hardware accelerated output for
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X11 and OS X. The significant new functions are:
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cairo_set_target_gl
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cairo_gl_surface_create
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Automatic detection of available backends
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-----------------------------------------
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The configure script now automatically detect what backends are
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available, (use ./configure --disable-`backend' to prevent
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compilation of specific backends).
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|
2004-04-06 20:13:11 +00:00
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Snapshot 0.1.20 (2004-04-06 Carl Worth <cworth@isi.edu>)
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|
========================================================
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New pattern API
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---------------
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David Reveman has contributed a new pattern API which enable linear
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and radial gradient patterns in addition to the original surface-based
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patterns. The significant new top-level functions are:
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cairo_pattern_create_linear
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cairo_pattern_create_radial
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cairo_pattern_create_for_surface
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cairo_pattern_add_color_stop
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cairo_set_pattern
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Any code using the old cairo_set_pattern, (which accepted a
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cairo_surface_t rather than a cairo_pattern_t), will need to be
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updated.
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Update to XCB backend
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---------------------
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The XCB backend is now enabled by default, (use ./configure
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--disable-xcb to turn it off).
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Faster clipping
|
|
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|
|
---------------
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Graydon Hoare has added optimizations that make cairo_clip much faster
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when the path is a pixel-aligned, rectangular region.
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Bug fixes.
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|
Snapshot 0.1.19 (2004-02-24 Carl Worth <cworth@isi.edu>)
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|
========================================================
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New PNG backend
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|
---------------
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Olivier Andrieu contributed a new PNG backend. It builds on the
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existing image backend to make it easy to render "directly" to a
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.png file. The user never needs to deal with the actual image
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buffer. The significant new functions are:
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cairo_set_target_png
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cairo_png_surface_create
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The PNG backend is not enabled by default so that by default there is
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not a new dependency on libpng. Use ./configure --enable-png to enable
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this backend.
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Snapshot 0.1.18 (2004-02-17 Carl Worth <cworth@isi.edu>)
|
|
|
|
|
========================================================
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|
Path query functionality
|
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|
------------------------
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|
It's now possible to query the current path. The two new functions
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are:
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cairo_current_path
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cairo_current_path_flat
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Each function accepts a number of callback functions that will be
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called for each element in the path (move_to, line_to, curve_to,
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close_path). The cairo_current_path_flat function does not accept a
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curve_to callback. Instead, all curved portions of the path will be
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|
converted to line segments, (within the current tolerance value). This
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can be handy for doing things like text-on-path without having to
|
2005-08-13 05:00:20 +00:00
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manually interpolate Bézier splines.
|
2004-04-06 20:13:11 +00:00
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|
|
New XCB backend
|
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|
|
---------------
|
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|
|
Jamey Sharp has contributed a second X backend that uses the new, lean
|
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|
|
XCB library rather than Xlib. It cannot currently be compiled at the
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|
same time as the Xlib backend. See ./configure --enable-xcb.
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Build fixes for cygwin.
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Bug fixes.
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|
Snapshot 0.1.17 (2003-12-16 Carl Worth <cworth@isi.edu>)
|
|
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|
|
========================================================
|
2003-12-16 08:27:17 +00:00
|
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|
|
Better text support
|
|
|
|
|
-------------------
|
2003-12-16 08:06:49 +00:00
|
|
|
This snapshot provides much better text support by implementing the
|
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|
|
following four functions:
|
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|
|
2003-12-16 08:27:17 +00:00
|
|
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cairo_text_extents
|
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cairo_glyph_extents
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cairo_text_path
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cairo_glyph_path
|
2003-12-16 08:06:49 +00:00
|
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|
The text/glyph_extents functions can be used to determine the bounding
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|
box (and advance) for text as if drawn by show_text/glyphs.
|
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The text/glyph_path objects functions place text shapes on the current
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|
|
path, where they can be subsequently manipulated. For example,
|
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|
|
following these functions with cairo_stroke allows outline text to be
|
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|
drawn. Calling cairo_clip allows clipping to a text-shaped region.
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|
2003-12-16 08:27:17 +00:00
|
|
|
Combined dependencies
|
|
|
|
|
---------------------
|
2003-12-16 08:29:01 +00:00
|
|
|
The cairo core now depends only on the libpixman library. This single
|
2003-12-16 08:27:17 +00:00
|
|
|
library replaces the three previous libraries libic, libpixregion, and
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|
|
slim. Thanks to Dave Beckett <dave.beckett@bristol.ac.uk> for all of
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|
|
the heavy lifting with this renaming effort.
|
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|
|
Conditional compilation of backends
|
|
|
|
|
-----------------------------------
|
2004-10-27 13:13:39 +00:00
|
|
|
Cairo now allows optional backends to be disabled at compile time. The
|
2003-12-16 08:27:17 +00:00
|
|
|
following options may now be passed to the configure script:
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|
--disable-xlib
|
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|
--disable-ps
|
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|
Note that the first option is a change from the old --without-x option
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|
which will no longer have any effect.
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OS X supported - several byte-order issues resolved
|
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|
|
---------------------------------------------------
|
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|
|
Cairo has now been successfully compiled under OS X. Testing revealed
|
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|
|
that there were some byte-order problems in the PostScript backend and
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|
|
the PNG generation in the demos. These have now been resolved.
|
2004-02-24 10:45:26 +00:00
|
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|
|
2003-10
|
|
|
|
|
=======
|
|
|
|
|
Graydon Hoare <graydon@redhat.com> implemented the first real text
|
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|
|
support using Freetype/fontconfig, (previous versions of cairo used
|
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|
|
Xft and could only draw text when using an X backend).
|
|
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|
|
|
|
|
2003-09
|
|
|
|
|
=======
|
|
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|
|
Graydon Hoare <graydon@redhat.com> added the first real support for
|
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|
|
running cairo with a non-render-aware X server.
|
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|
|
Jamey Sharp <jamey@minilop.net> virtualized the backend font and
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|
|
surface interfaces in September, 2003.
|
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|
2003-06
|
|
|
|
|
=======
|
|
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|
|
Xr is renamed cairo to avoid confusion since it no longer had a strict
|
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|
|
dependence on X.
|
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|
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|
|
|
|
2003-05
|
|
|
|
|
=======
|
|
|
|
|
A new image surface backend is added to Xr. Keith Packard
|
|
|
|
|
<keithp@keithp.com> wrote the image compositing code in libic that is
|
|
|
|
|
used for the image_surface backend. This code was originally written
|
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|
|
as the software fallback for the render extension within the X
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|
|
server.
|
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|
2002-06
|
|
|
|
|
=======
|
|
|
|
|
Carl Worth <cworth@isi.edu> wrote the first lines of Xr, after Keith
|
|
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|
|
Packard <keithp@keithp.com> proposed the plan for a stateful drawing
|
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|
|
library in C providing a PostScript-like rendering model.
|
