Convert the boilerplate specific flattened content value to the ordinary
CAIRO_CONTENT_COLOR_ALPHA for use with cairo_push_group_with_content() -
otherwise cairo rightfully flags an error and the test harness decides
that the similar surface is not available.
We had several pdf tests disabled waiting for this bug fix:
Poppler does not correctly handle knockout groups
https://bugs.freedesktop.org/show_bug.cgi?id=12185
That's in place for poppler now, so we're turning the tests
back on. Some of the affected tests now pass perfectly:
over-above-source
over-around-source
over-below-source
over-between-source
Some just needed new reference images:
operator-clear
clip-operator-pdf-argb32
The remaining tests still fail, but none of the failures can
obviously be ascribed to just poppler problems:
clip-operator-pdf-rgb24
operator-source
unbounded-operator
The first two have some serious problems, while in the case
of unbounded-operator the problem is extremely minor (a white
grid appears in the background where the reference image is
all black).
Testing win32-printing requires setting the default printer to
a PostScript level 3 color printer. The PostScript output is
saved to a file and converted to png using ghostscript.
This patch adds cairo_surface_copy_page and cairo_surface_show_page
as public methods, leaving the previous cairo_show_page variants as
shorthands. copy_page/show_page are specific to the surface, not
to the context, so they need to be surface methods.
As opposed to the CAIRO_TEST_TARGET env var which lists the exact
targets to test, CAIRO_TEST_TARGET_EXCLUDE instead supplies a list of
targets to filter from the testing set. This is useful under
circumstances where the build environment prevents testing of a target,
for example no DirectFB support or the glitz library is broken, but where
you still want to perform the minimal check that the code compiles.
These are failing due to (already reported) poppler bugs.
There were also problems with the gradients in the PDF
files previously, but these have recently been fixed.
The following 7 tests currently fail with poppler due to:
Poppler does not correctly handle knockout groups
https://bugs.freedesktop.org/show_bug.cgi?id=12185
and we've verified with acroread that the cairo-pdf output
does render as intended there. The disabled tests are
clip-operator, operator-clear, operator-source, over-above-source,
over-around-source, over-below-source, and over-between-source.
Whilst testing the fallback surface, the resultant image was being
clipped to the screen size. Be conservative and refuse to create
windows (for CAIRO_CONTENT_COLOR surfaces) that are larger than the
screen.
As well as marking the XRender extension unavailable in
_cairo_boiler_player_xlib_disable_render(), we need to clear any
XRender derived information stored during the surface creation.
The following four tests are disabled:
gradient-alpha, linear-gradient, text-pattern, trap-clip
We don't use XFAIL as that would disable all backends, (but
we can still usefully use these tests on backends other than
PDF).
