This makes the cursor update properly if it was above the window
switcher while it was visible, and something underneath it wants to use
something other than the default arrow cursor.
In 2e6bb987a3 the "did_construct" API in
Core::Object was removed, since it had only one user. For a replacement,
the Window would manually call the frame's "frame_was_constructed"
method. However, WindowServer::Window has two constructors, and only one
of them called this method. This caused windows to spawn without
buttons and various other breakage that spawned from this.
There is also make_ref_counted(), which does not call did_construct(),
so the method was not guaranteed to be run. Since there is only a single
user, and `WindowServer::Window` is a final class anyway (so there is no
need to separate the constructor and post-constructor phases), let's get
rid of this concept.
(The following commits reduce the opportunities to call
make_ref_counted, but still.)
This removes the awkward String::replace API which was the only String
API which mutated the String and replaces it with a new immutable
version that returns a new String with the replacements applied. This
also fixes a couple of UAFs that were caused by the use of this API.
As an optimization an equivalent StringView::replace API was also added
to remove an unnecessary String allocations in the format of:
`String { view }.replace(...);`
Only one place used this argument and it was to hold on to a strong ref
for the object. Since we already do that now, there's no need to keep
this argument around since this can be easily captured.
This commit contains no changes.
Currently, any number of menubars can be plugged in and out of a window.
This is unnecessary complexity, since we only need one menubar on a
window. This commit removes most of the logic for dynamically attaching
and detaching menubars and makes one menubar always available. The
menubar is only considered existent if it has at least a single menu in
it (in other words, an empty menubar will not be shown).
This commit additionally fixes a bug wherein menus added after a menubar
has been attached would not have their rects properly setup, and would
therefore appear glitched out on the top left corner of the menubar.
We were re-rendering areas that were considered transparency areas even
though they weren't transparency areas or were occluded by opaque
areas.
In order to fix this, we need to be a bit smarter about what is above
and below any given window. Even though a window may have transparent
areas, if those are occluded by opaque window areas on top they are
not actually any areas that should be rendered at all. And the opposite
also applies, opaque window areas for windows below that are occluded
by transparent areas, do need to be rendered as transparency. This
solves the problem of unnecessary transparency areas.
The other problem is that we need to know what areas of a window's
dirty rectangles affect other windows, and where. Basically any
opaque area that is somehow below a transparent area that isn't
otherwise occluded, and any transparent area above any other window
area (transparent or opaque) needs to be marked dirty prior to
composing. This makes sure that all affected windows render these
areas in the correct order. To track these, we now have a map of
affected windows and the rectangles that are affected (because not all
of that window's transparency areas may be affected).
Before this change, invalidating any rect in a WindowFrame would cause
the entire window (including frame & drop shadow) to get invalidated,
leading to copious amounts of overdraw when mousing over menubars,
titlebars, and window buttons.
We now simply allow the partial frame invalidations through to the
window's dirty rects collection and the compositor takes care of it.
This patch adds the concept of a window being "Pinnable" (always drawn
on top of other windows). This can be toggled through a new checkable
action in the top left corner's window menu.
Because window states and various flags can affect the windows'
rendered areas it's safer to use the last computed occlusion rectangles
to invalidate areas on the screen that may have to be re-rendered due
to e.g. a window size change.
Fixes#6723
Differentiates between normal minimization and hidden windows. A window
which is hidden is still minimized, but can be seen as another stage
of being minimized.
Also, make it return a reference as aside from only three special
situations (creating, destroying, and moving a window between stacks)
a window should always be on a window stack. Any access during those
brief situations would be a bug, so we should VERIFY this.
This also adds the ability to query how many virtual desktops are
set up, and for the Taskbar to be notified when the active virtual
desktop has changed.
The time interval for animations is most often described as `duration`
in animation contexts and the `WindowServer::Animation` class
should reflect that.
Since being tiled means we restrict rendering a window to the screen it
is on (so that we don't "bleed" into an adjacent screen), we need to
untile it if the window either can't fit into the screen, or it is
detached from the screen edges.
The launch_origin_rect parameter to create_window() specifies where on
screen the window was launched from. It's optional, but if you provide
it, the new window will have a short wireframe animation from the origin
to the initial window frame rect.
GUI::Window looks for the "__libgui_launch_origin_rect" environment
variable. Put your launch origin rect in there with the format
"<x>,<y>,<width>,<height>" and the first GUI::Window shown by the app
will use that as the launch origin rect.
Also it looks pretty neat, although I'm sure we can improve it. :^)
This patch adds the WindowServer::Animation class, which represents
a simple animation driven by the compositor.
An animation has a length (in milliseconds) and two hooks:
- on_update: called whenever the animation should render something.
- on_stop: called when the animation is finished and/or stopped.
This patch also ports the window minimization animation to this new
mechanism. :^)
We were calculating the old window rectangle after changing window
states that may affect these calculations, which sometimes resulted
in artifacts left on the screen, particularily when tiling a window
as this now also constrains rendering to one screen.
Instead, just calculate the new rectangle and use the window's
occlusion information to figure out what areas need to be invalidated.
When a window is maximized or tiled then we want to constrain rendering
that window to the screen it's on. This prevents "bleeding" of the
window frame and shadow onto the adjacent screen(s).
This allows WindowServer to use multiple framebuffer devices and
compose the desktop with any arbitrary layout. Currently, it is assumed
that it is configured contiguous and non-overlapping, but this should
eventually be enforced.
To make rendering efficient, each window now also tracks on which
screens it needs to be rendered. This way we don't have to iterate all
the windows for each screen but instead use the same rendering loop and
then only render to the screen (or screens) that the window actually
uses.
Instead of just answering hit/no-hit when hit testing windows, we now
return a HitTestResult object which tells you which window was hit,
where it was hit, and whether you hit the frame or the content.
This replaces ctype.h with CharacterType.h everywhere I could find
issues with narrowing conversions. While using it will probably make
sense almost everywhere in the future, the most critical places should
have been addressed.
We were not substituting the window modified marker ("[*]") in the
title strings we were sending to WM clients. This caused the Taskbar
to show pre-substitution window titles for the Text Editor application.
This patch moves the window title resolution to Window::compute_title()
which is then used throughout.
Also update the window switcher for good measure. The window switcher
doesn't visualize this information at the moment, but we generally do
this when any window state changes.
Instead of trying to update only the little bit that changes, let's
have a function that updates all the window menu items in one go.
It's just a couple of string and boolean assignment, and the real
cost is performing the subsequent menu redraw, which remains the same.
This commit unifies methods and method/param names between the above
classes, as well as adds [[nodiscard]] and ALWAYS_INLINE where
appropriate. It also renamed the various move_by methods to
translate_by, as that more closely matches the transformation
terminology.
Windows that are marked as modified will now have another (themable)
close button. This gives an additional visual clue that some action
will be required by the user before the window gets closed.
The default window-close-modified icon is an "X" with "..." underneath,
building on the established use of "..." in menus to signify that
additional user input will be required before an action is completed.
