GApplication now has a palette. This palette contains all the system
theme colors by default, and is inherited by a new top-level GWidget.
New child widgets inherit their parents palette.
It is possible to override the GApplication palette, and the palette
of any GWidget.
The Palette object contains a bunch of colors, each corresponding to
a ColorRole. Each role has a convenience getter as well.
Each GWidget now has a background_role() and foreground_role(), which
are then looked up in their current palette when painting. This means
that you no longer alter the background color of a widget by setting
it directly, rather you alter either its background role, or the
widget's palette.
Color themes are loaded from .ini files in /res/themes/
The theme can be switched from the "Themes" section in the system menu.
The basic mechanism is that WindowServer broadcasts a SharedBuffer with
all of the color values of the current theme. Clients receive this with
the response to their initial WindowServer::Greet handshake.
When the theme is changed, WindowServer tells everyone by sending out
an UpdateSystemTheme message with a new SharedBuffer to use.
This does feel somewhat bloated somehow, but I'm sure we can iterate on
it over time and improve things.
To get one of the theme colors, use the Color(SystemColor) constructor:
painter.fill_rect(rect, SystemColor::HoverHighlight);
Some things don't work 100% right without a reboot. Specifically, when
constructing a GWidget, it will set its own background and foreground
colors based on the current SystemColor::Window and SystemColor::Text.
The widget is then stuck with these values, and they don't update on
system theme change, only on app restart.
All in all though, this is pretty cool. Merry Christmas! :^)
We manage the checked state of these buttons manually in the code, and
we don't want the user to interfere with it, which would be possible if
we put them in checkable state.
Both on_square_clicked and flood_mark were very similar so I've
introduced the on_square_clicked_impl function which is now
called by on_square_clicked and flood_fill.
Instead of manually doing String::format("%d"/"%u") everywhere, let's have
a String API for this. It's just a wrapper around format() for now, but it
could be made more efficient in the future.
Rather than having the first click hit a bomb, if the first click would
hit a bomb, instead, reset the game board.
This is a (sort of) feature of Windows minesweeper, and IMO makes
playing a bit more fun :-)
Use a number of techniques to avoid freezing the UI for too long.
- Keep reusing the same widgets for the squares once they've been created.
- Temporarily disable widget updates.
- Avoid some redundant work on each run of reset().
Someone was playing this game and suggested a number of improvements so here
we go trying to address them:
- Add "chording" support, where you can click a numbered square using both
mouse buttons simultaneously to sweep all non-flagged adjacent squares.
- Mis-flagged squares are now revealed as such on game over, with a special
"bad flag" icon.
- The game timer now shows tenths of seconds. It also doesn't start until
you click the first square.
- Add the three difficulty modes from the classic Windows version.
You open the configuration for an app like so:
auto config = CConfigFile::get_for_app("MyApp");
This will then open ~/MyApp.ini and parse it for you.
Immediately start using it in Minesweeper to load the field size and mine
count from a config file.
