Changing the ::after element to be displayed as 'block' lets it be
positioned using relative. This means we can remove the confusing
"position: relative" from the checkbox.
This commit removes our dependency on the class "noVNC_touch" which was
set by Javascript. Instead, we can use the CSS media query
"any-pointer: coarse", which means that any pointing device that isn't
accurate is available. In practice this seems to basically be equal to
that a touch screen is available.
This change lets us simplify the selectors in many cases as well, which
is a nice bonus.
We can't just modify the CSS variable here, since that is also used in
the style for :disabled. We need to change the entire "background-image"
in order for :disabled to be able to override it.
Before, we have had two different gradiant versions, one where the two
colors meet in the middle, and one where only the top part of the
element was the darker shade. This was easily missed. Let's standardize
on the latter alternative. This commit introduces a variable to make it
easier.
It was completely unnecessary that these two were separate, lets combine
them. The only difference was that the lower rule didn't apply for
<select>. That doesn't matter though, since padding-left and
padding-right are specifically set for <select> elements anyway.
Instead of marking the hover selector with ":not(:disabled)" we can
break out this into its own section. This makes things easier to read.
In order to ensure the correct selector prioritization we also reorder
the file a bit.
Use the more specific background-image property when setting
linear-gradient backgrounds for input elements. This way we no longer
pollute all background related properties. It makes things easier if we
need to replace it in some states in the future.
Some elements used grey text and background when disabled, and some used
opacity. It looked a bit old school to make the elements grey when
disabled. Let's use opacity for all input elements when disabled.
Use the new modern :focus-visible instead of :focus. This is only shown
when navigating using the keyboard.
And in the case of the control bar buttons, This means we can separate
the :focus and :hover styles. Instead of showing a lighter overlay (or
darker for selected) like we use for hover, lets use a more common
blue outline for focus-visible. This also means we can re-use the common
focus-visible from input.css instead of having a special one for control
bar buttons.
Since we are setting "appearance: none" on our <select> elements, the
drop down arrow from the browser is hidden. This arrow doesn't fit in
visually though. This commit adds a new arrow from a simple data url
SVG. Its a dark triangle "pointing" downwards.
Note that we need to set the background to both the gradient and the
image here. Both use the "background-image" property for the graphic,
but since they are positioned differently we must use the general
"background" shorthand.
We depend un such modern things anyway, having these kinds of properties
are more confusing than helpful. Let's not give the impression that we
make any attempt to work in old browsers.
This makes it easier for integrators of vnc.html to write their own
input and button styles.
It's also positive to cut a bit off from the size of the large base.css.
Samuel Mannehed