Add more info to cairo_surface_set_mime_data docs.

Explains how to use cairo_surface_set_mime_data so that the image always
gets used even if the MIME data cannot be.

Signed-off-by: jimmyfrasche <soapboxcicero@gmail.com>
Revert "image: Use convolution filters for sample reconstruction when downscaling"

This reverts commit fb57ea13e04d82866cbc8e86c83261148bb3e231.

When running cairo-test-suite with the parameter "-a", it also runs each test
with a non-zero device-offset and device-scaling. The above commit influenced
the device-scaling results badly. E.g. some test results ended up with a black
border at the top-most and left-most row that looked like there was an offset of
"0.5" in drawing the image and thus pixels outside of the image were sampled.

This can be seen by the influence that this revert has on the results from
running CAIRO_TEST_TARGET=image ./cairo-test-suite -a:

Before: 31 Passed, 489 Failed [1 crashed, 8 expected], 31 Skipped
After: 225 Passed, 295 Failed [1 crashed, 8 expected], 31 Skipped

Most of the failures that disappeared are from the device-scaling tests.

With such disastrous results on the test suite, this cannot really be usable for
real-world applications.

Signed-off-by: Bryce Harrington <b.harrington@samsung.com>
test: fix build of any2ppm if fork not available

The test program any2ppm can run as daemon. This feature can be disabled
at compile time, if the required headers are not present. However the
support for fork() is not checked.

This patch fixes this issue.

Signed-off-by: Eric Le Bihan <eric.le.bihan.dev@free.fr>
src : Fix warn_unused_result warnings from gcc

Fix 'unused-result' warning messages by
- replacing cairo_private to cairo_private_no_warn in the
  declaration of the cairo private apis '_cairo_surface_unmap_image',
  '_cairo_polygon_add_line', '_cairo_polygon_add_external_edge' and
  '_cairo_polygon_add_contour'
- removing cairo_warn for 'render_rows' member function pointer in
  'struct _cairo_span_renderer'

Signed-off-by: Ravi Nanjundappa <nravi.n@samsung.com>
Don't use __FUNCTION__ as a string literal

clang-cl doesn't support this and we don't gain much
from using it.
xcb: make use of _cairo_surface_is_xcb to check for surface type

Introduced a new inline function _cairo_surface_is_xcb() as similar to
_cairo_surface_is_image() and used the same to check for xcb surface
type

Signed-off-by: Ravi Nanjundappa <nravi.n@samsung.com>
skia: update the source to build with the latest skia

This fixes several build related issues for the skia backend
which is introduced due to skia source up-gradation.

Signed-off-by: Ravi Nanjundappa <nravi.n@samsung.com>
Reviewed-by: Uli Schlachter <psychon@znc.in>
Reviewed-by: Bryce Harrington <b.harrington@samsung.com>
.gitignore: Ignore two generated files in build/

Signed-off-by: Bryce Harrington <b.harrington@samsung.com>
clang-cl: Use size of the pointer explicitly

This works around http://llvm.org/PR20216.
.gitignore: Ignore the generated profile data files from callgrind tool in test/

Signed-off-by: Ravi Nanjundappa <nravi.n@samsung.com>
Reviewed-by: Bryce Harrington <b.harrington@samsung.com>
skia : Add Debug support for skia backend

Enable the DEBUG support for skia backend to provide more
descriptive information on the unexpected operational behaviours.

Signed-off-by: Ravi Nanjundappa <nravi.n@samsung.com>
Reviewed-by: Bryce Harrington <b.harrington@samsung.com>
chmod a+x cairo-trace
[trace] Don't print FC_CHARSET, FC_LANG, and FC_CAPABILITY

There are many more that can go, but these take the most bytes.
FC_CHARSET needs to go specially because I recently changed
its format in fontconfig.  Ouch!
configure.ac: Quell warnings about AM_PROG_AR when using automake 1.12

Without this, autogen.sh issues warnings like:

  /usr/share/automake-1.14/am/ltlibrary.am: warning: 'libcairoboilerplate_cxx.la': linking libtool libraries using a non-POSIX
  /usr/share/automake-1.14/am/ltlibrary.am: archiver requires 'AM_PROG_AR' in 'configure.ac'
  boilerplate/Makefile.am:18:   while processing Libtool library 'libcairoboilerplate_cxx.la'

AM_PROG_AR was introduced in automake 1.11.2.  As per the docs for
AM_PROG_AR, it is supposed to be included when the archiver ('ar') is
used, but prior to automake 1.12 the warning was only shown iff
-Wextra-portability was specified.  automake 1.12 introduced a change
that includes -Wextra-portability when -Wall is specified.

For further discussion of the issue, see:

  http://debbugs.gnu.org/cgi/bugreport.cgi?bug=11401
  http://lists.gnu.org/archive/html/automake/2012-05/msg00014.html

Signed-off-by: Bryce Harrington <b.harrington@samsung.com>
Reviewed-by: Uli Schlachter <psychon@znc.in>
configure.ac: Add a --disable-lto configure option

Link-Time Optimization seems to be stable enough with gcc 4.8 and 4.9,
but has proven to be an issue in the past for many cairo users (webkit,
efl, ubuntu, opensuse, gentoo, arch...) who carry patches to disable it.

Gentoo's patch[1] adds a --disable-lto option to leave it enabled by
default but give users the ability to work around lto related build
problems (c.f. fdo #77060).  Patch appears to have been authored by
Alexandre Rostovtsev[2].

1: sources.gentoo.org/cgi-bin/viewvc.cgi/gentoo-x86/x11-libs/cairo/files/cairo-1.12.16-lto-optional.patch
2: https://bugs.gentoo.org/show_bug.cgi?id=509552

Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=60852
Signed-off-by: Bryce Harrington <b.harrington@samsung.com>
Reviewed-by: Uli Schlachter <psychon@znc.in>
configure.ac: Fix broken build for Qt backend

When --enable-qt is specified, the build will break due to missing
libstdc++:

  CCLD     cairo-test-suite
/usr/bin/ld: ../boilerplate/.libs/libcairoboilerplate.a(libcairoboilerplate_cxx_la-cairo-boilerplate-qt.o): undefined reference to symbol '__gxx_personality_v0@@CXXABI_1.3'
//usr/lib/x86_64-linux-gnu/libstdc++.so.6: error adding symbols: DSO missing from command line
collect2: error: ld returned 1 exit status

When using g++ to compile and link code, g++ automatically links
libstdc++.  However, in cairo we're using g++ only to compile, so need
to explicitly link against libstdc++ for backends that need iostream,
stl, or other stdc++ features.

Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=59038
Signed-off-by: Bryce Harrington <b.harrington@samsung.com>
Reviewed-by: Uli Schlachter <psychon@znc.in>
[cairo-trace] Work around fontconfig :charset= parse format change

As dicussed on the mailing list.