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constraints: account for decorations when positioning modal dialogs

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What we want to achieve is that the dialog is visually centered
on the parent, including the decorations for both, and making sure
that CSD/frame_extents are respected.

https://bugzilla.gnome.org/show_bug.cgi?id=707194
This commit is contained in:
Giovanni Campagna 2013-09-02 11:22:11 +02:00 committed by Owen W. Taylor
parent aad275b9a2
commit a1087c3f30
1 changed files with 17 additions and 7 deletions
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24
src/core/constraints.c
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@ -765,18 +765,28 @@ constrain_modal_dialog (MetaWindow *window,
{
int x, y;
MetaWindow *parent = meta_window_get_transient_for (window);
MetaRectangle child_rect, parent_rect;
gboolean constraint_already_satisfied;
if (!meta_window_is_attached_dialog (window))
return TRUE;
x = parent->rect.x + (parent->rect.width / 2 - info->current.width / 2);
y = parent->rect.y + (parent->rect.height / 2 - info->current.height / 2);
if (parent->frame)
{
x += parent->frame->rect.x;
y += parent->frame->rect.y;
}
/* We want to center the dialog on the parent, including the decorations
for both of them. info->current is in client X window coordinates, so we need
to convert them to frame coordinates, apply the centering and then
convert back to client.
*/
child_rect = info->current;
extend_by_frame (&child_rect, info->borders);
meta_window_get_outer_rect (parent, &parent_rect);
child_rect.x = parent_rect.x + (parent_rect.width / 2 - child_rect.width / 2);
child_rect.y = parent_rect.y + (parent_rect.height / 2 - child_rect.height / 2);
unextend_by_frame (&child_rect, info->borders);
x = child_rect.x;
y = child_rect.y;
constraint_already_satisfied = (x == info->current.x) && (y == info->current.y);