Instead of having three different boxes and style classes, we can just
get away with the regular background box, plus a window-frame, which
contains the external frame, together with the window drop shadows.
GtkWindow now has special code to ensure the backing actual window is
allocated big enough to accomodate the shadows (using the shadow size
calculations introduced in the previous commit). We also use the margin
value to determine the size of the invisible borders (which can then be
different than the shadow).
We still need to respect this border value even when we're not running
under CSD, since we support setting a custom titlebar in all cases.
The border/style magic in gtk_window_draw() really needs to be separated
out into logical pieces soon, but for now let's keep a consistent
behavior with the previous code.
Instead of reparenting the content, use input-only windows to
set cursors and capture clicks on the window frame. This avoids
some of the problems that were introduced by content_window, such
as black flashes and non-working opacity.
Don't just look at previously remembered sizes, also look at the current
size.
This is useful for cases where the window was resized by the user or WM
and not by the application itself.
https://bugzilla.gnome.org/show_bug.cgi?id=696882
We don't want to remember sizes in the not resizable case. Also a
function named "guess_default_size" should not look at previous sizes,
it should guess.
Old code assumed the size was stored in widget.allocation. This is no
longer true as the allocation is cleared upon hide. However, we store
the last configure request, and that one tracks the last size, so we can
just use that number.
Sometimes things are so easy - once you figure them out...
https://bugzilla.gnome.org/show_bug.cgi?id=696882
When the window has no mnemonics modifier set, as in the case of a
GtkMenu, never schedule a display of mnemonics on focus-in.
Previously, for those windows, the GdkModifierType mask fetched from the
device would typically have been zero, leading to the
mnemonic_modifier == (mask & gtk_accelerator_get_default_mod_mask ())
check to succeed, so we would always trigger a display for popup menus.
https://bugzilla.gnome.org/show_bug.cgi?id=697144
Don't mention "auto mnemonics", since those methods are purely about
scheduling a delayed display, and that makes understanding the code a
bit harder.
https://bugzilla.gnome.org/show_bug.cgi?id=697144
First of all, that call is deprecated. Second, we don't have RC styles
anymore. Third, what that function does today is invalidate style
contexts, but that happens automatically when setting the screen on the
style context later.
So this function is completely unnecessary.
This make the nice 'snap off' feature of gnome-shell work
with client-side decorations. weston moves the maximized window
around, which is less ideal...
We already set it in init, so this is just redundant.
The additional window-content style class here is needed so that we can
distinguish between the full X window background and the background for
the actual window contents.
We were not translating event coordinates to the toplevel
window, thus the regions we determined were not right.
We were also not respecting the maximized state, and we
were unnecessarily refusing to handle events when not decorated.
https://bugzilla.gnome.org/show_bug.cgi?id=696197
The function update_window_buttons shows or hides the title header after it
has finished updating the visibility of the various buttons. Unfortunately
this
conflicted with the hiding of the title done when going fullscreen.
This solves the problem and fixes the rendering of fullscreen applications by
using update_window_buttons to control the visibility of the box in the
fullscreen case.
A new function that sets a custom titlebar on a GtkWindow.
With client-side decorations, the custom titlebar simply
replaces the one that GtkWindow would otherwise create itself.
With traditional decorations, we tell the window manager
to just decorate the window with a border. This works ok
at least with metacity and mutter.
For csd, we were subtracting the border width one too many
times from the child height, causing clipped off content e.g.
in the 'Properties' window in testgtk.
For now, nothing changes, we're using the sum of inner and
outer border everywhere.
In the future, we will make the inner border the visible
window frame, and the outer border the shadow/resize border.
Add a style property to control the presence and order of
window buttons. We allow buttons at the left and right side,
they can be specified like this: icon,close:minimize,maximize.
Also, change the default button layout back to have just a close
button on the right, use icons in buttons, and set style classes
on the buttons, to allow better theming.
Hide the close button if the window is not deletable, hide the
maximize button if the window is not resizable, and hide all
buttons if the window is a dialog.
Update buttons when the window state changes.
Client side decorations can be enabled on non-Wayland platforms by
setting the GTK_CSD="1" environment variable.
We must ensure we have a GdkVisual that has an alpha channel since
the decorations rely on transparency. If we cannot get a visual with
an alpha channel then we do not enable client side decorations.
Otherwise we'll potentially get some background sticking through our rounded
corners in our decorations. The actual background will get drawn as part of
the decoration drawing.
This change comprises four main parts:
* the creation of the widgets that form the decorations,
* implementation of get_preferred_height/width, and the for_width/for_height
variants,
* taking the decorations into account when allocating,
* and drawing the decorations themselves.
Kristian did the bulk of the original work on this but any bugs are almost
certainly mine through the many refactorings and rebasings.
