Fix regression in wxDC::Clear() and make wxGCDC::Clear() consistent with
it by using white if the background brush hadn't been explicitly set.
See https://github.com/wxWidgets/wxWidgets/pull/1582
Collapsing a branch shouldn't deselect all the items under it in
multi-selection mode: this doesn't seem to be useful or otherwise make
sense and makes the generic version gratuitously incompatible with the
native MSW one.
Closes#10239.
Closes https://github.com/wxWidgets/wxWidgets/pull/1581
Improvements to wxHtmlWindow selection handling: use inactive background
for it when the window doesn't have focus; allow copying it with
Ctrl-Ins and fix annoying changes in layout while selecting.
Closes https://github.com/vadz/wxWidgets/pull/12
When selecting the text in wxHtmlWindow by dragging the mouse the text
to the right of the selection sometimes jumps horizontally. This happens
only on MSW and only for TrueType fonts. The reason is that
wxDC::GetPartialTextExtents() and wxDC::GetTextExtent() give different
results if the text contains characters with underhangs or overhangs.
Fix this by caching results of wxDC::GetPartialTextExtents() and using
them instead of calling wxDC::GetTextExtent().
When running under Wayland and using two-finger scrolling, GTK seems to only
emit "smooth" scrolling events. The code was already setup to handle
GDK_SCROLL_SMOOTH events - we just needed to add GDK_SMOOTH_SCROLL_MASK to the
event mast of the window in order to receive the events.
Fixes#17734.
Although white background was used if the brush was never set, setting
and resetting it nothing unexpectedly (and inconsistently with the other
ports) resulted in using black background.
Fix this by just resetting the brush to white if it's invalid, instead
of not setting it at all.
Since 848f5e78a6 the background wasn't
cleared at all if the background brush hadn't been explicitly set prior
to calling wxDC::Clear(). This was incompatible with the old behaviour
and even managed to break our own print preview code, so it clearly
wasn't a good idea to change Clear() like this.
Instead, continue to clear the DC using white background by default,
while still not doing anything if a transparent background brush had
been explicitly set.
This fixes print preview background under MSW.
See #10273, #18371.
Checking whether alpha info flag contains one of
the constants representing image/bitmap with alpha
channel is done more than once in the code so this
check can be moved to a dedicated function.
This makes the collapsible pane allocated exactly its best size better
looking, as the header is centered now, instead of having a border on
the left side, but not on the right one.
See #18515.
DoGetBestSize() actually calculated the best client size and not the
full size, as it didn't take the pane border into account.
Fix this in the simplest possible way, by just renaming the function to
DoGetBestClientSize() instead.
This ensures that the pane is actually big enough to show its contents,
without cutting off the text shown in its header.
Closes#18515.
Make it more clear that we do what we do in DoGetBestClientSize()
because of what our OnPaint() does.
Incidentally fix off by 1 (or 2 under non-MSW platforms) mismatch
between the 2 methods: the gap between the button and the text is
actually just 2 DIPs, not 4, but we need to add another 1 DIP for the
focus rectangle under MSW.
This key combination is used for selecting all text, while it's also
relatively common to use it as an accelerator for some menu item.
Resolve the conflict in favour of wxTextCtrl, i.e. let it have this key
when it has focus, while still allowing to use it as an accelerator
otherwise.
Since wxBitmap can have both alpha channel values and mask we have to use
alpha channel (if required) in the sub-bitmap even if the mask is provided
too.
See #18513.
