The goal here is to avoid having to hard code what visualizers are shown
from the .ui files. We just should add things that we find are supported.
Long term, I think we'll add a concept of an "instrument" which is the
combination of a data source (SpSource) and a visualizer (SpVisualizerRow).
The other goal here is to enable the future support for discovering marks
and adding rows for each of those threads.
The lib/ directory was getting a bit out of hand, so this tries
to organize things a bit so it is easier going forward to locate
the code people want to patch.
Now that we are post-3.26, we are removing the legacy autotools
build system in favor of meson.
Please report any errors you have so that we can ensure this is
ready for GNOME 3.28.
We want this in sysprof.h (without UI components) so that we
can use it to filter things in profilers. Therefore, we don't
need to make it namespaced to "visualizers" since a time range
selection is a fairly straightforward, and non-UI confined
implementation.
We want to set some custom backgrounds for the visualizers, and
those need to track with the current theme. SpThemeManager will
watch the systems theme changes (including dark theme) and
update the loaded CSS resources as necessary.
This allows us to have the SpVisualizerView grow and shrink
along with the visualizer content up until the user has manually
moved the paned handle. At which point it clamps to that
position as allowed by the size request phases.
This uses the new ZoomManager to wire up zoom controls for the
main window. We had to switch away from GMenu to give ourselves
the control we will need for the zoom label of 100% which still
needs to be wired up.
This adds a new helper widget SpVisualizerView to simplify using
visualizers from applications using libsysprof-ui-2 such as
Builder.
We can manage the view range, zoom, etc from this widget going
forward.
We need some sort of scale for content, so we will do this with
an overlay for now. However, we will also want something to be
able to do selections in the future.
This still needs some iteration for correctness, but this sort
of gets the ball rolling.
When set on the window, we seem to lose the value when inserting the
headerbar, resulting in the title being "sysprof" (binary name) according
to the shell. Setting this on the headerbar seems to fix that.
