This patch also changes the semantics of scaled_icon_buffer: rather than
calling scaled_icon_buffer_set_app_id() every time an app_id is set, we
can now call scaled_icon_buffer_set_view() just once so that multiple
scaled_icon_buffers bound to a window are automatically updated when an
app_id is set or new icon is set via xdg-toplevel-icon-v1.
Ref: 009515161bd97d8f920d72d31ef462f2608688e8
("scene: Only accept buffer coordinates for damage")
Note:
MR 4819 is immediately followed by MR 4845.
MR 4819 removes return value of wlr_damage_ring_add().
MR 4845 applies applies buffer-local coordinates for
scene_output->damage_ring instead of transformed coordinates.
char **s not needed to get trailing whitespace trimmed,
and rtrim() does not return anything
if there is leading whitespace in *s in call to string_strip(),
there is less chars left to scan in rtrim().
This commit adds <theme><fallbackAppIcon> that configures the icon name
to be used when lookups for an application icon is failed. Its default
value is set as 'labwc' which shows our labwc logo.
padding_x in lab_img_render() was just to make sure window icons in the
titlebar doesn't get too close to adjacent buttons and it didn't felt
clean. To remove it from lab_img, this commit changes the size of window
icon buffers from (window.button.width)x(window.button.height) to
(window.button.width * 0.8)x(window.button.height) and horizontally
slide it by (window.button.width * 0.1) to keep the horizontal padding.
Note that the size of the hitbox for a window icon is kept the same and
nothing is changed from user's perspective.
This prevents potential bugs that buffers created by scaled_scene_buffers
before Reconfigure are reused by other newly created scaled_scene_buffers.
This is targeted for scaled_icon_buffer whose buffer creation depends on
server->sfdo.
This fixes an issue with buffers not updating when an output is configured
for a new scale. It also supports windows being on more than 2 outputs at
once and in general simplifies the code.
as well as 'openbox-3', for example: /usr/share/themes/foo/labwc/themerc
Give 'labwc' higher precedence than 'openbox-3' if both exist.
For several reasons not all themes designed for labwc render well on
Openbox:
1. Labwc support some features like SVG/PNG icons and #rrggbbaa color
definitions which Openbox does not.
2. Openbox generally defaults to black/white colors and will not render
themes accurate without certain options specified in themerc. For
example, in Openbox the following will just render as black:
window.active.title.bg.color: #589bda
...because Openbox defaults the texture to "Gradient Vertical" and
therefore either needs:
window.active.title.bg.colorTo: #3c7cb7
...or remove 'Gradient' from the bg definition and just use something
like:
window.active.title.bg: Flat Border
Whilst none of this is a problem when using labwc, it causes problems for
setups with both Openbox and labwc because themes designed for labwc only
will now show up in obconf, lxappearance, etc causing confusion for users.
Before this commit, there was a use-after-free bug on Reconfigure:
- theme_finish() destroys lab_imgs for titlebar icons
- For some reason, undecorate() calls _create_buffer() in
scaled-img-buffer.c, which calls img_render() on a destroyed lab_img.
So in this commit, the lifetime of lab_img is expanded to when the
scaled_img_buffers referencing it are all destroyed. This is achieved by
calling lab_img_copy() when setting a lab_img to scaled_img_buffer and
calling lab_img_destroy() when clearing a lab_img.
Now that scaled_img_buffer.img are always different, lab_img_equal() is
added to compare the content of scaled_img_buffer.img.
- fix that icons for normal/hovered/rounded buttons are not placed
exactly the same position
- fix blurry window button icons in scaled outputs
This commit introduces lab_img and scaled_img_buffer and uses them for
rendering icons in the window titlebar. Now the process of rendering
button icons are split into 2 phases: loading with lab_img_load() and
creating scene-nodes for them with scaled_img_buffer_create(). This
might incur some additional overhead since we no longer preload icon
textures, but the rendering of icon only happens for the first window
as backing buffers are shared and the overhead won't be noticeable.
This commit also simplifies the process of centering icon buffer in the
button, by creating icon buffers in a fixed geometry via
lab_img_render().
Prior to this commit, a backing buffer with scale 1 was always created for
a scaled_scene_buffer before showing it, and backing buffers for specific
scales were created on output_enter events.
This commit removes this redundant re-renderings by calling
wlr_scene_buffer_set_dest_size() upon scaled_scene_buffer creation just to
receive output_enter events and delaying the first rendering to the first
output_enter event.
I needed to add font_get_buffer_size() to obtain the size of a font buffer
without actually creating it.
Arrow signs are specific to submenu items, so they would be more natural
to be handled in menu.c rather than accepting "arrow" in
font_buffer_create().
Also I allowed non-positive numbers for max_width in font_buffer_create(),
in which case the natural font width is used as the buffer width.
lab_data_buffer->logical_{width,height} are not the actual size of the
backing buffer, so wlr_buffer.{width,height} should be used when
duplicating it in get_cairo_surface_from_lab_data_buffer().
This mistake caused segfault when an icon file 1~2 times larger than
window.button.{width,height} is loaded, because the buffer for the raw
icon file is reused by setting lab_data_buffer->logical_{width,height}
with the size for display which is different from
wlr_buffer.{width,height} (see buffer_convert_cairo_surface_for_icon()),
and it is duplicated with get_cairo_surface_from_lab_data_buffer() for
hovered/rounded variants of titlebar button.
scaled_rect_buffer is an implementation of scaled_scene_buffer and shows
an auto-scaling bordered rectangle. This is intended for menu borders,
but can be also useful for other elements like window switcher items.
We will support rounded corners for scaled_rect_buffer in the future.
Implementers can define impl->equal() which compares two
scaled-scene-buffers so that buffers are not allocated for visually
duplicated scaled-scene-buffers.
Currently this mechanism isn't applied for scaled-font-buffers since we
haven't defined impl->equal() for it.
This allows implementations of the interface to share a single
wlr_buffer for multiple wlr_scene_buffer nodes and still make
the scaled-scene-buffer handle the buffer drops.
wlr_scene_buffer holds an implicit lock while using a wlr_buffer
and scaled-scene-buffer.c holds additional locks for as long as
a buffer is within its internal cache.
This should ensure that a shared wlr_buffer never gets actually
dropped even if wlr_buffer_drop() has been called by another
scaled-scene-buffer instance using the same wlr_buffer.
Currently, the cursor plane does not allow async page flips which causes tearing page flips to be rejected if the cursor was moved.
However, in games where no cursor image is present, the async page flips can still work as expected.
Instead of permanently disabling tearing after too many failures, test the output state first before each frame to see if we can commit with tearing_page_flip set to true.
We have several wlr_output_* functions which are just wrappers around
corresponding wlr_output_state_* functions and don't actually touch the
wlr_output itself. These probably made some sense historically, but IMHO
they are just confusing now. So remove them and call wlr_output_state_*
directly.
Rename wlr_output_commit() (still useful) to output_state_commit().
Add buffer_adopt_cairo_surface(), which allows wrapping an existing
cairo image surface in a struct lab_data_buffer. This is useful when
loading PNGs since most will be loaded as ARGB32 already.
Fix a memory leak in the non-ARGB32 PNG case, where we do still need to
paint to a new image surface -- we were leaking the original surface.
Eliminate an unnecessary temporary image surface in SVG loading and just
render the SVG to the image surface held by the lab_data_buffer.
I also cleaned up and clarified the buffer API a bit:
- Add a pointer to the held cairo_surface_t (so we can still access it
if there is no cairo_t).
- Remove the free_on_destroy bool (it was always true).
- Rename unscaled_width/height to logical_width/height and add an
explanatory comment. It was unclear what "unscaled" meant.
- Rename buffer_create_wrap() to buffer_create_from_data().
This is laying groundwork for some more icon fixes I am working on
(making sure icons are loaded and rendered at the correct scale).
This works around a wrong truncation warning in older GCC versions:
```
../src/common/buf.c:110:10: error: null destination pointer [-Werror=format-truncation=]
110 | int n = vsnprintf(NULL, size, fmt, ap)
```
