The search window of a tree view was implemented by showing without
making it visible by by positioning it outside the screen edge. This is
not possible on Wayland, so implement another method for being able to
enter text into a non-visible entry.
The new method is implemented by, before showing the window, pass the
key event directly to the IM context backing the entry. If the key
event triggered the context to commit new text or change the preedit
content, the search window is shown, and from that point the key events
are forwarded directly to the entry widget.
https://bugzilla.gnome.org/show_bug.cgi?id=756780
These days exposure happens only on the native windows (generally the
toplevel window) and is propagated down recursively. The expose event
is only useful for backwards compat, and in fact, for double buffered
widgets we totally ignore the event (and non-double buffering breaks
on wayland).
So, by not setting the mask we avoid emitting these events and then
later ignoring them.
We still keep it on eventbox, fixed and layout as these are used
in weird ways that want backwards compat.
Code exists in the wild that calls this function after the widget has
been destroyed (and the pixel cache released). Simply check that the
pixel cache exists to preserve the existing state.
I believe that first_column can only ever be NULL here if
last_column is NULL too, in which case we'd exited already.
But coverity doesn't see that, so add an explicit exit.
GtkTreeView has a particularly expensive drawing path. This can cause
issues when part of animated widget sequences. Caching the content while
a model is attached helps reduce the number of full redraws during
exposure greatly.
https://bugzilla.gnome.org/show_bug.cgi?id=751082
Just use the last coordinates given on XdndPosition/drag_motion() in
order to trigger scrolling.
When running on Xwayland, the pointer position is unknown at this
stage on the X11 side, so the coordinates given here are bogus.
This change avoids both roundtrips and this situation.
https://bugzilla.gnome.org/show_bug.cgi?id=749679
When a treeview is destroyed while rubberbanding is going
on, we crash because the rb tree is nuked before we want
to access it to stop the rubberbanding. To avoid this crash
end the rubberbanding early in destroy().
See
https://bugzilla.redhat.com/show_bug.cgi?id=1173904
GPUs generally have problems when you create a 35000px wide surface.
Luckily X catches this and sends a BadAlloc. Which GTK immediately
abort()s on.
Testcase included.
https://bugzilla.redhat.com/show_bug.cgi?id=1163579
This is so signal handlers have an opportunity to undo its effect by
returning GDK_EVENT_STOP on ::button-press-event, just like they used
to do pre-gestures.
https://bugzilla.gnome.org/show_bug.cgi?id=735965
Use the left border color for tree lines. This is similar to
our use of top border color for grid lines. As a side-effect,
tree lines now get recolored when they are in a selected row.
https://bugzilla.gnome.org/show_bug.cgi?id=415415
The pre-gestures code used to compare the current button press with the
previous one on !activate_on_single_click, and unset the previous event
data so ::row-activated would be emitted every 2 clicks.
So do the same with the multipress gesture and reset it after every 2nd
click to have ::row-activated emitted multiple times while manic clicking.
https://bugzilla.gnome.org/show_bug.cgi?id=735353
That gesture is meant to handle clicks on multiple buttons, so unset
the GDK_BUTTON_PRIMARY default. Also, remove unnecessary boilerplate
with the new GtkGestureSingle/GtkEventController defaults.
https://bugzilla.gnome.org/show_bug.cgi?id=734285
This check used to be present in the pre-gestures code, but was unintentionally
removed when splitting code into drag/multiclick gestures. The policy used to
be that if clicking happened on an already selected node, DnD would happen
instead of rubberband selection, so this behavior is resuscitated.
https://bugzilla.gnome.org/show_bug.cgi?id=734143
The rules-hint property has always been a fairly bad application API, as
it set some wrong expectations for the developers; deferring to the
theme makes it impossible to design application reliably, and if this is
a usability setting we should either impose this setting on every theme,
or simply drop it.
Our own default theme does not honour the zebra striping, which makes
this function even more questionable.
In practice, usability studies on zebra striping have demonstrated that
alternating colors on a list it improves readability just as much as
clear ruling between rows, or by visually differentiating the selected
row. Zebra striping improves readability (or, at least, it does not
hinder it) on static displays, like a table on paper or a document; on a
dynamic display, like an application's UI, there are different
strategies that yield similar, if not better, results.
https://bugzilla.gnome.org/show_bug.cgi?id=733312
The animated scrolling interferes with incremental validation.
As short-term solution, disable scrolling animation during
incremental validation. This is not a proper solution, but
it avoids broken behavior like scrollbars that are not reacting
to clicks. The problem was visible, e.g. in the list view
example in gtk3-demo.
The animated scrolling interferes with incremental validation.
As short-term solution, disable scrolling animation during
incremental validation. This is not a proper solution, but
it avoids broken behavior like scrollbars that are not reacting
to clicks. The problem was visible, e.g. in the list view
example in gtk3-demo.
The reparenting happening on the column header so it gets a movable
window breaks the implicit grab, so this is one situation were we
want a pointer grab, if just to replace it.
https://bugzilla.gnome.org/show_bug.cgi?id=732933
Code was expecting view coordinates, not widget ones, as we're
only dealing with horizontal displacements, just adding the
horizontal adjustment value suffices.
https://bugzilla.gnome.org/show_bug.cgi?id=732933
Regions are done in a very non-css way. They don't fit the DOM in that
they don't integrate into the CSS tree and they have very weird matching
behavior in selectors.
So I'm deprecating them now. GtkNotebook and GtkTreeview will continue
to use them and as long as they do, we can't remove the code for it.
But once those are ported it might be safe to remove the code as it will
clean up lots of places in the code by quite a bit.
The rubberband rendering code was assuming that we just have
a 1-pixel border and the rest of the rubberband is uniform.
That is not a safe assumption to make with css-styled
rubberbands, so remove it.
The code is actually prepared for that, the gesture was initially limited
to only handling GDK_BUTTON_PRIMARY because it only used to handle row
activation.
