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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.
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These are now separate from the Window and WindowText colors.
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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! :^)
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This seems pretty sensible to me. I'm unsure if we should activate
nodes that have children, or just toggle them.
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We were casting the pthread_mutex_t* instead of pthread_mutex_t::lock
to an Atomic<u32>. This still worked fine, since "lock" is the first
member of pthread_mutex_t.
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This allows SDL to build against our native recursive mutex instead
of providing its own. Also it's just a nice feature to have. :^)
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This is a bit sad, but, with the Allocators as static globals their
destructors were running before some user code. Which doesn't really
make much sense, as none of the members of (at least the basic one) do
any real heavy lifting or have many resources to RAII.
To avoid the problem, just mmap the memory for the global arrays of
Allocators in __malloc_init and let the Kernel collect the memory when
we're done with the process.
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These guys are all declared as globals, and their ASSERT_NOT_REACHED
in the destructor doesn't play nice with __cxa_atexit. As in, every
application will assert in __cxa_finalize if this assert isn't removed.
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Implement __cxa_atexit and __cxa_finalize per the Itanium spec,
and convert stdlib's atexit and exit() to to call them instead of
a custom 'C-only' atexit implementation.
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We always want to put crt0.o in the location where it can get picked
up by the i686-pc-serenity toolchain.
This feels a bit hackish but should get the build working again. :^)
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Use simple stack cookies to try to provoke an assertion failure on
stack overflow.
This is far from perfect, since we use a constant cookie instead of
generating a random one on startup, but it can still help us catch
bugs, which is the primary concern right now. :^)
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Allow everything to be built from the top level directory with just
'make', cleaned with 'make clean', and installed with 'make
install'. Also support these in any particular subdirectory.
Specifying 'make VERBOSE=1' will print each ld/g++/etc. command as
it runs.
Kernel and early host tools (IPCCompiler, etc.) are built as
object.host.o so that they don't conflict with other things built
with the cross-compiler.
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These fields are intended to carry the real meat of a drag operation,
and the "text" is just for what we show on screen (alongside the cursor
during the actual drag.)
The data field is just a String for now, but in the future we should
make it something more flexible.
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This will cause the event to bubble up the widget tree.
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Now that Frame knows the visible viewport rect, it can easily ignore
repaint requests from e.g <blink> elements that are not currently
scrolled into view. :^)
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This allows you to iterate a subtree and get a callback for every node
where is<T>(node) == true. This makes for quite pleasant DOM traversal.
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When the visible viewport rect changes, we walk the layout tree and
check where each LayoutImage is in relation to the viewport rect.
Images outside have their bitmaps marked as volatile.
Note that the bitmaps are managed by ImageDecoder objects. If a bitmap
is purged by the kernel while volatile, we construct a new ImageDecoder
next time we need pixels for the image.
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This will allow various mechanisms and optimizations based on the
currently visible viewport rect.
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Also add ImageDecoder APIs for controlling the volatile flag.
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This allows you to create a process-private purgeable GraphicsBitmap.
The volatile flag is controlled via set_volatile() / set_nonvolatile().
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Sometimes you might want to know if a purgeable region is volatile.
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When iterating lines for "white-space: pre", we should only break when
there is an actual line break character.
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This logic broke when converting String::length() to return size_t.
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A client that only ever does synchronous IPC calls from its side would
never actually process incoming asynchronous messages since they would
arrive while waiting for a synchronous response and then end up sitting
forever in the "unhandled messages" queue.
We now always handle unhandled messages using a deferred invocation.
This fixes the bug where Audio.MenuApplet didn't learn that the muted
state changed in response to its own request to change it. :^)
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