Commit Graph

21 Commits

Author SHA1 Message Date
Benjamin Otte
3322599e99 css: Introduce the idea of dynamic values
Dynamic values are values that change their contents with the current
(monotonic) time.

This just introduces the GtkCssValue API for it.
2018-03-16 06:04:43 +01:00
Benjamin Otte
83fb7a649f css: Merge GtkStyleProviderPrivate into GtkStyleProvider
This is just lots of renaming.

The interface remains private, so the public API does not change, apart
from removing the definition of the Interface object to avoid
subclassing.
2017-10-31 04:33:54 +01:00
Benjamin Otte
cd3f24d579 cssvalue: Change color transitions to run premultiplied
Previously, the unpremultiplied values from the GdkRGBA were taken. Now
we premultiply the color values as specified by the CSS specs.
This is only relevant when transitioning with translucent colors.

An example is the halfway transition between transparent (0, 0, 0, 0)
and white (1, 1, 1, 1). Previously, all 4 values where transitioned
separately and the result was semi-transparent gray (0.5, 0.5, 0.5,
0.5).
By depending on the alpha value, the result is now semi-transparent
white (1, 1, 1, 0.5) which is what one would naively expect.

New reftest: color-transition
2015-06-26 21:12:50 +02:00
Benjamin Otte
142abce46a cssvalue: Special case resulting color for transparency
Again, preparation for using premultiplied color transitions.
2015-06-26 20:54:57 +02:00
Benjamin Otte
e3d8f03b3a cssvalue: Restructure RGBA transitions
Split out a function to make the code clearer for the changes ahead.
2015-06-26 19:06:02 +02:00
Benjamin Otte
da25771e58 cssvalue: Remove GtkCssDependencies
They are not used anymore.
2015-03-18 15:23:31 +01:00
Benjamin Otte
1116914ea0 css: Move scale to GtkStyleProviderPrivate
This way, we can remove it as a separate argument from
gtk_css_value_compute() and allow computation to only depend on one
thing: the style provider.
2015-02-06 11:26:31 +01:00
Benjamin Otte
572f46067f cssstyle: Rename GtkCssComputedValues => GtkCssStyle
This is literally just renaming of the object (and the associated source
files). No other changes are in there.
2015-01-07 14:26:46 +01:00
Alexander Larsson
af2c40bd54 css: Add a scale argument to css-value compute vfunc
We need to be able to compute different GtkCssImage values
depending on the scale, and we need this at compute time so that
we don't need to read any images other than the scale in used (to
e.g. calculate the image size). GtkStyleProviderPrivate is shared
for all style contexts, so its not right.
2013-07-03 14:39:25 +02:00
Benjamin Otte
4f9a8e6b3d symboliccolor: Remove extra includes
That header was included in way too many places.
2012-11-25 02:59:15 +01:00
Benjamin Otte
1454ba15ba css: Huge refactoring to avoid computing wrong values
Here's the shortest description of the bug I can come up with:
When computing values, we have 3 kinds of dependencies:
(1) other properties ("currentColor" or em values)
(2) inherited properties ("inherit")
(3) generic things from the theme (@keyframes or @define-color)
Previously, we passed the GtkStyleContext as an argument, because it
provided these 3 things using:
(1) _gtk_style_context_peek_property()
(2) _gtk_style_context_peek_property(gtk_style_context_get_parent())
(3) context->priv->cascade

However, this makes it impossible to lookup values other than the ones
accessible via _gtk_style_context_peek_property(). And this is exactly
what we are doing in gtk_style_context_update_cache(). So when the cache
updates encountered case (1), they were looking up the values from the
wrong style data.

So this large patch essentially does nothing but replace the
context argument in all compute functions with new arguments for the 3
cases above:
(1) values
(2) parent_values
(3) provider

We apparently have a lot of computing code.
2012-09-28 18:27:49 +02:00
Benjamin Otte
e3fc081c5d cssvalue: Pass property ID to transition function
This is to allow animating arrays properly. I'm not really thrilled
about this solution (we leak propertys into the values again...), but
it's the best I can come up with - I prefer it to having N different
array types...
2012-09-03 12:54:14 +02:00
Benjamin Otte
0e2f35ed88 css: Introduce dependencies for value computations
When values are computed, they might depend on various other values and
we need to track this so we can update the values when those other
values change. This is the first step in making that happen.

This patch does not do any dependency tracking at all, instead it uses
GTK_CSS_DEPENDS_ON_EVERYTHING as a sort of FIXME.
2012-08-28 15:42:23 +02:00
Benjamin Otte
09f9fd42b4 css: Fold color value computation into gtksymboliccolor.c
This gets rid of the public function
_gtk_css_rgba_value_compute_from_symbolic().
The fallback is now handled using a switch statement instead of letting
the caller pass the function.
2012-08-28 15:40:56 +02:00
Benjamin Otte
9b4ed66218 css: Pass property_id to compute function
This is a reorganization of how value computing should be done.
Previously the GtkCssStyleProperty.compute vfunc was supposed to take
care of special cases when it needed those for computation. However,
this proved to be very complicated in cases where values were nested and
only the last value (of a common type) needed to be special cased.

A common example for this was the fallback handling for unresolvable
colors.

Now, we pass the property's ID along with all compute functions so we
can do the special casing where it's necessary.
Note that no actual changes happen in this commit. This will happen in
follow-ups.
2012-08-28 15:40:56 +02:00
Benjamin Otte
9b953829fb css: Introduce _gtk_css_value_compute()
This commit is essentially a large reorganization. Instead of all value
subtypes having their own compute function, there is the general
_gtk_css_value_compute() function that then calls a vfunc on the
subtype.
2012-08-28 15:40:56 +02:00
Benjamin Otte
0111b9d507 symboliccolor: Treat it as a CssValue
.. now that it is one.
2012-04-17 08:59:20 +02:00
Benjamin Otte
83be7e5dbd symboliccolor: Pass the current color to the resolve function
This way, we can resolve things like
  mix (currentColor, &otherColor);
and therefore parse currentColor as a regular color.
2012-04-17 08:59:19 +02:00
Benjamin Otte
31565139ba stylecontext: Convert _gtk_style_context_peek_property()
Take the property id instead of the name.
2012-04-17 08:59:15 +02:00
Benjamin Otte
1a9dfab825 cssvalue: Add _gtk_css_value_transition()
Returns a value that transitions between start and end or %NULL if the
values cannot be transitioned.

So far, all implementations but numbers and rgba return NULL.
2012-04-17 08:59:15 +02:00
Benjamin Otte
58b6d492b8 cssvalue: Add a custom RGBA value
Note: custom CSS properties still use the default GtkCssValue and always
will.
So there is a difference in css values used between those, even though
they both carry a GdkRGBA payload.
2012-04-17 08:59:14 +02:00