We don't need columns of divs to equally size themselves, so use easier layout techniques to make the list fit in the container. We have to take a hit with `height:100%`, but the hit is much more insignificant than confusing the layout engine.
The layout engine has a hard time with dynamically-but-statically-sized stuff like `width: 100%; display: flex;`, particularly when it is nested so badly. Overall this should improve performance for the app by not having to re-paint so often.
Fixes https://github.com/vector-im/riot-web/issues/14639
This is a work in progress, but covers the coarse areas. This uses all-new classes to better describe what everything is, and to reduce the number of selectors we keep track of.
This is primarily layout for the list and not actually the final structure. For example, some buttons are missing and other areas are not styled correctly - the idea in this commit was to get things roughly in the right place and work on it.
Though we consider the "room list" to mean the RoomList component specifically, the room list is actually the entire left panel as far as the user is concerned.
The new proposed designs for the room list modify the whole left panel, so we had might as well break it into new and old now instead of later. This "new" left panel is a bare-bones implementation and meant to only provide the absolute basic feature set to function for those who enable the experimental room list, for whatever reason. This is not intended to be a final implementation, or even remotely close to what it could be. An example of this is the lack of breadcrumbs. Given they are likely to change, they are excluded from this temporary skeleton completely.
This also includes a purple/pink bar between the tag panel and left panel. This is so we can, if needed, differentiate between people who made the mistake of turning on the experimental room list while the overall aesthetic makes it indistinguishable. Once the designs are moderately approved, we can (and definitely should) remove the hideous indicator.
It's become obvious that these random floating points everywhere
are unwieldy. Now they're all in one place with some fairly logical
variable names which will help out in design->implementation phase.
Font size of the whole app would ideally be controlled by a single
value. This value is currently hard coded using the :root CSS selector.
It is the intention to make this value configurable within riot. In the
interim all font-sizes have been converted to rem by the simple process
of regex. Replacing px values with their equivalent rem values assuming
a font size of 15px and then rounded to three decimal places, which was
the base at the time of this transformation.
I'm expecting another commit cleaning up rem values but I thought it
best to leave that to review.
This commit doesn't address any scaling issues. I thought it better to
land this unwieldy, mechanical, invisible change before the others
otherwise the pr would be impossible to review thoroughly.
as the resize handle is a sibling of the mxLeftPanel_container, that
class is the one that has to collapse if we don't want to complicate
the logic. So change style rules to check
.mxLeftPanel_container.collapsed, and make left panel not break
out of the container when it gets narrow by hiding the overflow
