Transient nodes should not propagate style-changed signals
that can cause widgets to get reallocated. This was causing
treeviews and iconviews with pixbuf cells to be constantly
resized and redrawn.
Clearing the icon doesn't appear to be necessary with
todays code, and it has the unfortunate side-effect of
temoorarily hiding the icon's window, which breaks grabs
and makes us miss the button release event when the icon
is changed from a button press handler.
We're going to add back the original struct definition removed by
a6e4de28, because using the typedef breaks all sorts of things like
gtkmm and WebKit, and having separate struct definitions allows us to
change the types in GdkBorder from gint16s to gints without breaking
ABI.
Functions requiring CoInitialize are called just in two places:
- the filechooser thread which calls its own CoInitializeEx
- the dnd code
Moving CoInitialize in the dnd specific init is cleaner and
we can pair it with the corresponding CoUninitialize since
CoUninitialize should be called as many times as CoInitialize.
Note that it is ok to call this function multiple times, so it
will not break if another codepath will need it in the future.
The patch also replaces the deprecated CoInitialize with the
equivalent call to CoInitializeEx (already used in the filechooser).
Empty boxes end up setting the clip to { 0, 0, 0, 0}, so warning
for a width or height of 0 triggers false positives. Instead,
initialize the clip to clearly invalid values.
As part of this conversion, remove the hardcoded padding around
the label.
Unfortunately, we cannot use the main gadget for drawing the frame
decoration, since we want to draw a custom border instead of the
stock css border that gadgets insist on drawing for us. Therefore,
add an extra gadget with name border and use it just for rendering
the frame.
Otherwise the gtk_grab_remove() calls on widget destruction will happen
on the default window group, which may leave the real window group
of the popover with a dangling pointer if it is not the default one.
This could be seen on the inspector, open a popover in the properties
list and close the window with alt-F4.
Invisible nodes don't change the first/last-child status of the nodes
after/before them. That means we don't have to just check the state of
the adjacent node when modifying this state, but all their siblings
until we hit a visible node.
The same way, a node is not the first child if it has no previous
sibling, it is the first child if it has no previous visible sibling.
This is important for caching in the global lookup cache.
CSS min-width and min-height on the slider node fit this
perfectly. We still fall back to the slider-width and
slider-height style properties if the CSS properties are
not set.
