At the moment, the icons in the key of the map
showing what each type of area drawn on the map
means change colour in high contrast mode. This
causes a mismatch between the areas on the map and
the key.
These changes remake the images in SVG to prevent
the colours changing in high contrast modes. They
also add a white background to the icons, to make
sure they match the areas they refer to in the
map.
The size and position of the 'X' has deviated a
bit from the design intentions of the original.
The original shared the x-height of the area text
and has positioned to be vertically and
horizontally centered.
These changes assume an x-height of 11px and use
flexbox to center the new 'X' horizontally and
vertically.
This also tweaks the visual state when focused and
then hovered so matches other buttons without
breaking the design.
The text never had underlines like our other
link-button components so always looked like
buttons. If they look like buttons, they should
act like them too and have those semantics.
This give them a role of button and uses the class
and data attribute for the button component from
GOVUK Frontend to make them work like one.
These changes include a fair amount of styles to
override those the govuk-button class brings in.
I've tried to mark those ones to at least make
that obvious.
The current link button for removing an area is
created using a psuedo element with an 'x' as
content.
The inline box for the 'x' overlapped its parent.
This is visible in high contrast mode, breaking the
parent's border. Despite existing in CSS, the 'x'
is also announced by screen readers, which is not
what we want.
This changes it to be an inline SVG with a role of
image. It doesn't require as large an inline box
so doesn't cause visual issues in high contrast
modes. It also means we can set it's label similar to
how you would an image's alt text, giving us
control over what is announced by screen readers.
This commit also includes some extra CSS,
targeting high contrast modes, giving the
link button the following when viewed in those
modes:
- a complete border so it is
distinguishable from the list item
- a focus style
When the list of areas is restricted to half the width of the page it
starts to look pretty higgledy-piggledy when you have lots of areas or
areas with very long names.
To do this I’ve ripped out the table markup in favour of headings,
paragraphs and lists. Probably pros and cons for each, but it was really
hard to do the layout with the content in a table.
This prefixes everything to do with areas/the map with `area-list`, so
from looking at one element you know which `.scss` file will contain the
relevant code.
We hide the map inside a details element.
Because the map has such a strong shape I don’t think it needs the grey
border to contain it. This commit removes the border, and adjusts the
spacing to group things by proximity alone.
By removing the border and associated gutter we can give more space to
the map, and make the page look less busy.
I’ve never liked the style of the selected areas on the preview of a
broadcast message. They were a compromise, taking what’s on the map page
and giving it a shaded background so it looks less like a text box.
The trouble is all these stroked elements jumbled together made the page
look very busy. I think it can be a bit calmer if they look more like
the ‘tag’ component[1] from the Design System, which only uses shading.
Going for black text not blue, because it’s one less piece of visual
differentiation – again, trying to keep the busyness level down.
1. https://design-system.service.gov.uk/components/tag/
We’ve had some feedback that the map key icons look a bit like
checkboxes, and that this might have confused a user during the
research.
So we need a way of making them look different to checkboxes. We don’t
want to change the border thickness because it matches what’s on the
map. A different approach is changing the shape.
Shapes that might still be confusing:
- circles (look like radio buttons)
- triangles (look like a warning)
So this commit changes the shape to a diamond, which is easy to acheive
by rotating the square 45 degrees.
We’ve had some feedback that relying only on luminosity and position to
differentiate between the ‘will get alert’ and ‘likely to get alert’
areas on the map might not be enough.
We don’t want to introduce another colour because:
- it will make the map look very busy
- not many other colours contrast with the map tiles as well as blue
- relying on colour only to communicate information is also bad for
accessibility
Instead we can make one of the lines a different style. I’ve gone for
dashed on the ‘likely’ line because it looks nice, and gives some
suggestion of a porous boundary.
Implementing this means using CSS border image, because a `dashed`
border (which we still have as a fallback) doesn’t render with
consistent dash sizes from browser to browser. We need consistency to
match the dashes that the map will be drawing (which use SVG not CSS
so don’t have the same problem).
To help people understand that broadcasting is not a precise technology,
we have shown the estimate bleed area on the map.
Because people aren’t familiar with the technology a visual only clue is
not enough. So this commit adds a key to the map, which explains what
the different outlines mean.
It also removes the sticky footer from this page to:
- make the key visible on the page
- make people scroll and review the map before they get to the big green
button
- not reduce the size of the map any further
Adding left margin to the button meant that when it wrapped onto a new
line it didn’t align flush with the left edge of its containing column.
Instead we can:
- move the link outside the list (which is better semantically anyway)
- then add the margin to the last item of the list (which is now the
last selected area, not the link)
This brings it back a bit closer to the page with the map, so the two
feel cohesive, while still making the selected areas look different to
textboxes.
Gives them some colours, borders and stuff to make them visually
consistent with the rest of Notify.
The idea is the tags and polygons have a similar affordances (i.e.
border thickness, colour) to visually link them and imply that they are
two representations of the same thing.
