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window: Remember relative position after constraining with custom rule

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In order to allow a window with a custom rule placement to be moved
together with its parent, the final rule used derived from the
constraining were used for subsequent constraints. This was not enough
as some constraining cannot be translated into a rule, such as sliding
across some axis.

Instead, make it a bit simpler and just remember the position relative
to the parent window, and use that the next time.

This is a rework of 5376c31a33020d7dc5a69b129f2dd4f42d0890a1 which
caused the unwanted side effects.

Fixes: https://gitlab.gnome.org/GNOME/mutter/issues/332
This commit is contained in:
Jonas Ådahl 2018-10-05 14:42:24 +02:00
parent 6267732bec
commit fa1add2ee6
3 changed files with 19 additions and 8 deletions
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22
src/core/constraints.c
View File

@ -788,6 +788,8 @@ constrain_custom_rule (MetaWindow *window,
MetaRectangle intersection;
gboolean constraint_satisfied;
MetaPlacementRule *current_rule;
MetaWindow *parent;
MetaRectangle parent_rect;
if (priority > PRIORITY_CUSTOM_RULE)
return TRUE;
@ -796,11 +798,15 @@ constrain_custom_rule (MetaWindow *window,
if (!placement_rule)
return TRUE;
if (window->constrained_placement_rule)
if (window->placement_rule_constrained)
{
meta_window_process_placement (window,
window->constrained_placement_rule,
&info->current.x, &info->current.y);
parent = meta_window_get_transient_for (window);
meta_window_get_frame_rect (parent, &parent_rect);
info->current.x =
parent_rect.x + window->constrained_placement_rule_offset_x;
info->current.y =
parent_rect.y + window->constrained_placement_rule_offset_y;
return TRUE;
}
@ -886,8 +892,12 @@ constrain_custom_rule (MetaWindow *window,
}
done:
g_clear_pointer (&window->constrained_placement_rule, g_free);
window->constrained_placement_rule = current_rule;
window->placement_rule_constrained = TRUE;
parent = meta_window_get_transient_for (window);
meta_window_get_frame_rect (parent, &parent_rect);
window->constrained_placement_rule_offset_x = info->current.x - parent_rect.x;
window->constrained_placement_rule_offset_y = info->current.y - parent_rect.y;
return TRUE;
}

4
src/core/window-private.h
View File

@ -524,7 +524,9 @@ struct _MetaWindow
guint bypass_compositor;
MetaPlacementRule *placement_rule;
MetaPlacementRule *constrained_placement_rule;
gboolean placement_rule_constrained;
int constrained_placement_rule_offset_x;
int constrained_placement_rule_offset_y;
};
struct _MetaWindowClass

1
src/core/window.c
View File

@ -313,7 +313,6 @@ meta_window_finalize (GObject *object)
g_free (window->gtk_app_menu_object_path);
g_free (window->gtk_menubar_object_path);
g_free (window->placement_rule);
g_free (window->constrained_placement_rule);
G_OBJECT_CLASS (meta_window_parent_class)->finalize (object);
}