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2287 Commits

Author SHA1 Message Date
Benjamin Otte
1c971c595f glrenderer: Shadows without offset do exist 
Not for opaque contents, but stuff can be semi-transparent.

Testcase included.
 2023-09-15 03:46:27 +02:00
Benjamin Otte
f8627755b5 rendernode: Shadow nodes need offscreen for opacity 
Otherwise the shadow will not be properly computed as opaque regions
become translucent after applying opacity.

Testcase included.
 2023-09-15 03:46:27 +02:00
Benjamin Otte
55ae8dc39e gsk: Move GskRoundedRect typedef 
typedef should go into *types.h headers so that other headers only need
to include those.
 2023-09-15 03:46:27 +02:00
Matthias Clasen
ec1a1d0e34 gl renderer: Don't assume an atlas 
The source uniform may or may not point
to a glyph atlas. The optimization we do
for color nodes is only possible if it does,
so check this.

Fixes: #6094
 2023-09-13 16:56:47 -04:00
Matthias Clasen
8f4fb45715 gl renderer: Keep track of source 
We have an optimization that depends on having
the source be a glyph atlas, so keep track of
that information in the render job.
 2023-09-13 16:55:01 -04:00
Matthias Clasen
1502c21e97 rendernode: Fix handling of color glyphs 
The rendernode parser was mixing up its flags.

Test included.

Related: #6075
 2023-09-13 15:37:57 -04:00
Benjamin Otte
a05a021fd1 rendernode: Fix Cairo rendering of repeating gradients 
Cairo and the GL renderer have a different idea of how to handle
transitioning of colors outside the defined range.

Consider these stops:
  black 50%, white 50%

What color is at 0%?

Cairo would transition between the last and first stop, ie it'd do a
white-to-black transition and end up at rgb(0.5,0.5,0.5) at 0%.
GL would behave as it would for non-repeating gradients and use black
for the range [0%..50%] and white for [50%..100%].
The web would rescale the range so the first stop would be at 0% and
the last stop would be at 100%, so this gradient would be illegal.

Considering that it's possible for code to transition between the
different behaviors by adding explicit stops at 0%/100%, I could choose
any method.
So I chose the simplest one, which is what the GL renderer does and
which treats repeating and non-repeating gradients the same.

Tests attached.
 2023-09-07 16:19:20 +02:00
Benjamin Otte
9ffd7840ba pathpoint: Add G_GNUC_EXTENSION to struct definition 
This allows compilation with gcc -pedantic.

GTKmm uses this as part of their recommended compiler flags.

Fixes #6083
 2023-09-07 16:19:20 +02:00
Matthias Clasen
ea7fd1ff5a contour: Fixup for 1-point contours 
If we return a path point for a 1-point contour,
make it { n, 0, 1 }.
 2023-09-04 00:55:21 +02:00
Matthias Clasen
9bd9b6f2ca contour: Make sure stroke bounds are sufficient 2023-09-03 23:04:47 +02:00
Matthias Clasen
360b77cc50 curve: Add a vfunc for get_at_length 
We can do this precisely for lines, so lets do it.
 2023-08-29 22:09:59 -04:00
Matthias Clasen
90ee05ae64 gsk: Clean up standalone headers 
We require folks to include gskglrenderer.h in order
to create a GL renderer. So we be careful to only
include header in gskglrenderer.h that won't trigger
ugly warnings.

See !6363
 2023-08-29 12:58:30 -04:00
Matthias Clasen
f3312f677b measure: Cosmetics 2023-08-28 21:14:28 -04:00
Matthias Clasen
05547d98d6 path: Cosmetics 
Reorganize this source file into sections.
 2023-08-28 21:13:58 -04:00
Matthias Clasen
11b219bc61 Drop tolerance from gsk_contour_foreach 
There is no decomposition going on for any contours,
and the tolerance argument is entirely unused.
Decomposition and tolerance is handled entirely
in gskpath.c by its trampoline.
 2023-08-28 20:52:22 -04:00
Matthias Clasen
827bbc0cc1 Change gsk_path_get_closest_point to return distance 
We already compute it, so lets return it.
Bindings seems fine with this change - they
already return (success, point) as a tuple
anyway.
 2023-08-28 11:22:30 -04:00
Matthias Clasen
5a3ed65ad8 Improve precondition checks for path points 
Add a helper function for checking that a
path point is valid for a path, and use it.
 2023-08-28 00:07:50 -04:00
Matthias Clasen
2e24a9ece4 Make GskPathPoint public 
The contents are still /*< private >*/, but we
let our tests and the debugger see them, which
helps.
 2023-08-28 00:07:50 -04:00
Matthias Clasen
2a17320314 Limit rect variation in path builder 
Make gsk_path_builder_add_rect always
produce a clockwise rectangle. This matches
what we do for circles and rounded rects,
which also go clockwise. Note that we
still need to allow negative widths in
the contour code, to implement reverse().
 2023-08-28 00:07:50 -04:00
Matthias Clasen
0dbff14555 Allow circles with radius of zero 
Not very useful, but we allow rects with
width and height of zero, so lets be consistent.
Curvature is infinite for such contours.

Tests included.
 2023-08-28 00:07:50 -04:00
Matthias Clasen
6f3be310f4 contour: Simplify gsk_circle_contour_foreach 
Use the same approach as the rounded rect contour.
 2023-08-27 21:31:40 -04:00
Matthias Clasen
2ca9982b91 rect contour: Avoid nans in corner cases 
The length of rect contours can be zero,
so we much check before we divide.
 2023-08-27 19:17:02 -04:00
Matthias Clasen
a40282b2fb Add gsk_path_point_print 
Another private debug API.
 2023-08-27 19:06:39 -04:00
Matthias Clasen
ad9fb1e101 Improve quad and conic decomposition 
If the control point is equal to either
start or end, just emit a line. This improves
the rendering of rounded rectangles with such
corners.
 2023-08-27 16:57:03 -04:00
Matthias Clasen
02a9652af4 Use a more compact representation for circles 
Print circles as M-o-o-o-o-z.
 2023-08-27 14:32:21 -04:00
Matthias Clasen
0a28a5d53a Add a rectangle contour 
Add a contour that optimizes some things for
rectangles. Also add rectangle detection to the
path parser, and add tests similar to what we
have for the other special contours.
 2023-08-27 12:36:56 -04:00
Matthias Clasen
1e6a124665 Correct the docs of gsk_path_builder_add_rect 
The path does *not* always go clockwise!
 2023-08-27 12:18:36 -04:00
Matthias Clasen
8d1844135b path: Add a comment 2023-08-27 10:10:08 -04:00
Matthias Clasen
b5dd9dae0d rounded rect contour: Fix an oversight 
The close operation takes 2 points, so our array
was one too short. Oops.
 2023-08-27 10:09:32 -04:00
Matthias Clasen
ebcb518e4f Cosmetics 2023-08-27 09:50:16 -04:00
Matthias Clasen
b7ea22f168 Drop unused code 
Nobody is calling gsk_contour_get_start_end, so drop
this internal API.
 2023-08-27 09:39:59 -04:00
Matthias Clasen
822e988efe path: Recognize rounded rects when parsing 
We can look out for M-L-O-L-O-L-O-L-O-Z patterns
with matching numbers.
 2023-08-27 09:31:17 -04:00
Matthias Clasen
cee043f977 Add a rounded rect contour 
This special contour takes advantage of its
rounded-rect-ness for speeding up bounding
boxes and winding numbers. It falls back
to the standard contour code for everything
else.
 2023-08-27 09:29:19 -04:00
Matthias Clasen
031c0ec3e5 pathpoint: Add some debug API 
Add a private gsk_path_point_to_string that
can be called in the debugger if you want
to see the contents of a GskPathPoint and
are too lazy to cast it to GskRealPathPoint
yourself.
 2023-08-27 09:14:47 -04:00
Matthias Clasen
ba3a657c48 contour: Add some debug API 
Add a private  way to get the class of a contour,
so we can test that roundtrips through gsk_path_parse
work as expected.
 2023-08-27 09:13:32 -04:00
Matthias Clasen
5f2f116c28 circle contour: Fix a typo 2023-08-27 07:43:55 -04:00
Matthias Clasen
2297a353b8 Merge branch 'circle-contour' into 'main' 
path: Add a circle contour

See merge request GNOME/gtk!6345
 2023-08-27 11:12:51 +00:00
Bilal Elmoussaoui
7342ce5bca gi: Add missing since annotation 2023-08-27 08:17:00 +00:00
Matthias Clasen
167b38dfa1 contour: Some reactoring 
Make a default print implementation, and use it.
 2023-08-26 23:42:52 -04:00
Matthias Clasen
b8a3d7fa00 path: Recognize circles when parsing 
We can look out for the tell-tale
M-O-O-O-O-Z and turn it into a circle
contour.
 2023-08-26 23:42:52 -04:00
Matthias Clasen
0fce24674a path: Add a circle contour 
This special contour takes advantage of the
circle definition to speed up things like
hit testing and closest point determination.
 2023-08-26 23:42:52 -04:00
Matthias Clasen
99ad585252 Merge branch 'measure-speedups' into 'main' 
contour: Stop doing the roundtrip test

See merge request GNOME/gtk!6342
 2023-08-27 01:13:41 +00:00
Matthias Clasen
6defdb4e8a Drop unused code 
we are not using any gsk_spline functions currently.
 2023-08-26 11:29:09 -04:00
Matthias Clasen
c989a06718 pathmeasure: compute samples on demand 
Only do the work for a curve the first time
we need it. This should greatly speed up
use cases where you only create a measure
to get the length of the path.
 2023-08-26 10:23:02 -04:00
Matthias Clasen
1c8bd8658d curve: Cosmetics 2023-08-26 10:23:02 -04:00
Matthias Clasen
ab50cba4e9 curve: Reduce the order of our approximation 
Use 24 samples instead of 32.
 2023-08-26 10:23:02 -04:00
Matthias Clasen
57918813e2 contour: Stop doing the roundtrip test 
Doing inverse arclength computations is
a very high overhead operation. And the
tests still pass without it.
 2023-08-26 09:39:49 -04:00
Matthias Clasen
677e19042d Docs: Cosmetics 2023-08-25 22:21:27 -04:00
Matthias Clasen
bd79f61cc5 pathpoint: Update the docs 
We have gained some more ways of getting points.
 2023-08-25 22:03:42 -04:00
Matthias Clasen
361cdecfe4 Merge branch 'path-measure-reredone' into 'main' 
Add GskPathMeasure

See merge request GNOME/gtk!6326
 2023-08-26 01:05:19 +00:00