Commit graph

13 commits

Author SHA1 Message Date
Vlad Zahorodnii
0860efecc3 Move SceneWindow::decorationShape() to DecorationItem 2022-05-09 09:41:39 +00:00
Vlad Zahorodnii
bc1f808f0f Move paint method from SceneWindow to Scene
That's the next step in allowing to reuse surface painting code between
the workspace and the cursor layer.
2022-05-09 08:31:13 +00:00
Nils Fenner
b491aeb9ae Rename AbstractClient to Window 2022-04-22 17:39:12 +00:00
Nils Fenner
aaa429ee0a Merge Toplevel into AbstractClient
References issue #81
2022-04-18 07:42:11 +00:00
Vlad Zahorodnii
8e7a8c5a11 Rename AbstractOutput to Output
AbstractOutput is not so Abstract and it's common to avoid the word
"Abstract" in class names as it doesn't contribute any new information.
It also significantly reduces the line width in some places.
2022-04-15 17:49:49 +03:00
Vlad Zahorodnii
7096e3ead8 Run clang-format
The .clang-format file is based on the one in ECM except the following
style options:

 - AlwaysBreakBeforeMultilineStrings
 - BinPackArguments
 - BinPackParameters
 - ColumnLimit
 - BreakBeforeBraces
 - KeepEmptyLinesAtTheStartOfBlocks
2022-03-25 13:25:15 +02:00
Vlad Zahorodnii
bb935aa5de Fix decoration rendering with scale factor < 1
QPainter won't let paint with a device pixel ratio less than 1. There
are used to be workarounds to force a device pixel ratio of 1, but they
were removed with fractional scaling corner fix.

This change makes sure that the decoration renderer forces a device
pixel ratio of 1 if the output's scale factor is less than 1 so
calculated texture coordinates match where window borders are rendered
in the texture atlas.

BUG: 449681
2022-02-07 11:45:31 +00:00
Julius Zint
3b4d558371 Improve window decorations in OpenGL scene
When creating the texture containing the window decorations, the drawing
code now directly handles the rotation for the left and right
decoration, instead of rotating the image after it has been drawn.

The padding, to prevent texture bleeding, is now a fixed value instead
of being scaled. With this change, there are no longer visual artifacts
for window decorations with rounded corners, when the scaling value is
fractional.
2021-12-30 09:07:42 +00:00
Vlad Zahorodnii
cbad78a360 Kill Toplevel::screenScale()
Tracking AbstractOutput properties in Toplevel is not extensible. Since
DecorationItem is the only one who needs Toplevel::screenScale(), make
it track the output device pixel ratio.
2021-11-29 13:14:01 +00:00
Vlad Zahorodnii
7e9c6587db Remove scene window traces in scene items
This further decouples scene items from scene windows. The SurfaceItem
still needs to access the underlying window, I would like to re-iterate
over that later.

With this change, it will be possible to introduce WindowItem factory
function in the Toplevel class.
2021-08-12 17:52:24 +00:00
Vlad Zahorodnii
86bb4e68ef Refactor window quad handling
The scene items depend on the scene windows for caching window quads.
The goal of this change is to move window quads management to item.

Merging window quads in one list and then splitting them is inefficient,
it will be highly desirable if window quads are removed from the public
api so we can optimize window quad management.

With this change, the window quad type becomes irrelevant to render
backends for the most part. Note that the Xrender backend is a bit
nitpicky about window quads, so the shadow item doesn't create generic
"WindowQuadShadow" quads anymore.
2021-06-11 06:03:08 +00:00
Vlad Zahorodnii
f46c7bae8d Move decoration renderer to decoration item
Currently, the implementation of the DecoratedClient and the decoration
renderer are strongly coupled. This poses a problem with the item based
design as the ultimate goal is to have scene items construct paint nodes
which are then fed to the renderer. The DecorationItem has to have
control over the decoration texture. Another issue is that the scene
cannot smoothly cross-fade between two window states if the decoration
is removed, e.g. from fullscreen mode to normal and vice versa.

This change moves the decoration renderer to the decoration item. With
the introduction of a generic scene texture atlas, we hope to get rid of
the decoration renderer altogether.
2021-05-26 06:35:03 +00:00
Vlad Zahorodnii
47113e09b8 scene: Introduce window items
Currently, dealing with sub-surfaces is very difficult due to the scene
design being heavily influenced by X11 requirements.

The goal of this change is to re-work scene abstractions to make improving
the wayland support easier.

The Item class is based on the QQuickItem class. My hope is that one day
we will be able to transition to QtQuick for painting scene, but in
meanwhile it makes more sense to have a minimalistic internal item class.

The WindowItem class represents a window. The SurfaceItem class represents
the contents of either an X11, or a Wayland, or an internal surface. The
DecorationItem and the ShadowItem class represent the server-side deco and
drop-shadow, respectively.

At the moment, the SurfaceItem is bound to the scene window, but the long
term plan is to break that connection so we could re-use the SurfaceItem
for things such as software cursors and drag-and-drop additional icons.

One of the responsibilities of the Item is to schedule repaints as needed.
Ideally, there shouldn't be any addRepaint() calls in the core code. The
Item class schedules repaints on geometry updates. In the future, it also
has to request an update if its opacity or visibility changes.
2021-03-31 13:56:55 +00:00