This was a cludge for ComboBox ListView windows when they were first
implemented. The behavior is no longer needed and not very ergonomic
when moving Normal windows around.
But do allow them to remain minimizable by a parent. This is a nice
ergonomics fix to allow a parent window to quickly minimize and
restore all its modal children.
And apply modal effects on move_to_front_and_make_active()
Instead of building a vector of windows every time we want to
loop over a group of related modals, simply recurse through
their ancestory. This lineage is now called a modal chain. Modal
chains begin at the first modeless parent, and a new chain
starts at every modeless child. This lets apps spawn child windows
independent of the main window's modal effects, restore state,
and workspace, yet still remain descendants.
Looping through a modal chain is recursive and includes the
modeless window which begins it.
with the CaptureInput WindowMode. This mode will serve the same
function as accessories: redirecting input while allowing parent
windows to remain active.
with the RenderAbove WindowMode. This mode will ensure child
windows always draw above their parents, even when focus is lost.
RenderAbove modals are automatically themed the same as the old
ToolWindows. Fixes ToolWindows rendering above ALL normal windows,
regardless of parent. We can't rely on WindowType to create these
sort of effects because of WindowManager's strict display hierarchy.
Previously, Windows only understood blocking modality: Windows were
either modal, i.e., in a blocking state, or not. Windows could also
be set as Accessories or ToolWindows, attributes which technically
applied modes to their parents but were implemented ad hoc. This patch
redefines these modal effects as WindowModes and sets up some helpers.
This will let us simplify a lot of modal logic in the upcoming patches
and make it easier to build new modal effects in the future.
Windows can now set 1 of 5 modes before reification:
-Modeless: No modal effect; begins a new modal chain
-Passive: Window joins its modal chain but has no effect
-RenderAbove: Window renders above its parent
-CaptureInput: Window captures the active input role from its parent
-Blocking: Window blocks all interaction with its modal chain
States like fullscreen and tiling are dynamic and don't alter behavior
in modal chains, so they aren't included.
Superceded by to_floating_cursor_position() as a more accurate way
to reposition windows on untile. Effectively made set_size_around()
dead code, so the remnants can be removed.
Positioning windows outside visible coordinates is valid if sometimes
curious behavior, but it shouldn't be considered misbehavior by default.
There are multiple ways to recover windows with obscured title bars,
and this function papers over actual resize bugs and is no longer
needed to normalize window size, so let's remove it for now.
And remove unnecessary workarounds to the old limit of {50, 50} and
the cautious but arbitrary limit of {1, 1} for other WindowTypes.
Null rects are already the default when calculating minimum window
size and are the least restrictive but valid value.
Also returns early during minimum size calculations for frameless
windows, and verifies against negative minimum sizes and failure to
disable widget min size before setting a minimum window size. Layout
automatically overrides this setting each relayout otherwise.
Previously submenus would pop-up on their immediate open ancestors in
cases of limited screen real estate. If the submenu was sufficiently
large, this could make it difficult to navigate back down the menu
stack. Now submenus display on either side of their ancestors, making
it easy to zig-zag up and down menu stacks. This is similar to how
menus operate in many other DEs.
And invalidate the cursor before creating a new drag-and-drop
overlay. Fixes dnd overlay bitmaps failing to draw at the correct
location immedately after changing cursors.
Adds a member to record the last processed mouse buttons. If they
do not include MouseButton::Primary, return early before creating
a new drag and drop client. This fixes race conditions in which
MouseUp events canceling or completing a drop could be swallowed
by Overlay creation or postponed by an executing DragOperation,
leaving the operation in limbo.
Now uses the Selection ColorRole for the active desktop and a
slightly darkened Window for inactive ones. Several themes use
the same color for thread highlighting and inactive windows which
was causing frames to draw without the correct perception of depth.
Menu and Window animations can now be disabled and the geometry
overlay made conditional. Shadow options are dependent on the
current theme actually supplying bitmaps, but they provide a fast
way to toggle those that do without having to edit theme files.
SystemEffects are sent to the WindowManager through
set_system_effects() and broadcast to Desktop clients with
update_system_effects(). WindowManager is reponsible for saving,
loading and rebroadcasting effects from WindowServer.ini on
config changes.
Previously we would wait for a separate message confirming that a
wallpaper got set instead of just calling a synchronous api.
I'm guessing that this was a limitation of the IPC system when
WindowServer got ported to using it.
This patch removes the SetWallpaperFinished message and updates the
set_wallpaper api to synchronously return a success boolean.
Previously, windows without a defined minimum size (or one produced from
the minimum sizes of their contents) would be shrunk down to 0 x 0,
which makes the title buttons stick out the side and become impossible
to interact with.
This patch uses the theme metrics to calculate a minimum size that is as
small as possible while still keeping the title buttons and app icon
usable. This is combined with the minimum size requested by the app
itself.
Switching themes automatically updates the calculated minimum sizes for
all existing windows. As noted, if the new theme has narrower title
buttons then the old minimum is kept, but this shouldn't be noticeable
unless you're looking for it.
Now that the infrastructure of the Graphics subsystem is quite stable,
it is time to try to fix a long-standing problem, which is the lack of
locking on display connector devices. Reading and writing from multiple
processes to a framebuffer controlled by the display connector is not a
huge problem - it could be solved with POSIX locking.
The real problem is some program that will try to do ioctl operations on
a display connector without the WindowServer being aware of that which
can lead to very bad situations, for example - assuming a framebuffer is
encoded at a known resolution and certain display timings, but another
process changed the ModeSetting of the display connector, leading to
inconsistency on the properties of the current ModeSetting.
To solve this, there's a new "master" ioctl to take "ownership" and
another one to release that ownership of a display connector device. To
ensure we will not hold a Process object forever just because it has an
ownership over a display connector, we hold it with a weak reference,
and if the process is gone, someone else can take an ownership.
This header file represents the entire interface between the kernel and
userland, and as such, no longer should be called FB.h but something
that represents the whole graphics subsystem.
Each of these strings would previously rely on StringView's char const*
constructor overload, which would call __builtin_strlen on the string.
Since we now have operator ""sv, we can replace these with much simpler
versions. This opens the door to being able to remove
StringView(char const*).
No functional changes.
Error::from_string_literal now takes direct char const*s, while
Error::from_string_view does what Error::from_string_literal used to do:
taking StringViews. This change will remove the need to insert `sv`
after error strings when returning string literal errors once
StringView(char const*) is removed.
No functional changes.
This commit has no behavior changes.
In particular, this does not fix any of the wrong uses of the previous
default parameter (which used to be 'false', meaning "only replace the
first occurence in the string"). It simply replaces the default uses by
String::replace(..., ReplaceMode::FirstOnly), leaving them incorrect.
This allows us to make sure that those operations are performed
in the right order. Affected functions are:
- add_window_stealing_for_client
- set_window_parent_from_client
- remove_window_stealing_for_client
- remove_window_stealing
Adds some logic to reposition menus that would appear off the right or
bottom edge of the screen so they appear completely on screen.
Co-authored-by: Sam Atkins <atkinssj@gmail.com>
Rather than enabling/disabling cursor highlighting by going into mouse
settings, you can now instead toggle it any time with Super+H. Mouse
settings now is only for customising the look of the highlighting.
Simply setting m_current_cursor in current_cursor_was_reloaded() does
not setup the cursor animation, that has to be done in change_cursor().
This also fixes the cursor disappearing after switching from an animated
cursor back to a normal one (which was due to it trying to draw a cursor
frame that did not exist).
All DisplayConnectors should support the mmap interface and it should
provide better performance now, so let's just use it and drop support
for the DisplayConnector's write interface from the WindowServer side.
