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popover: Correct placement of popovers

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When we don't have a pointing-to rectangle, we want to place
the popover wrt to the parents bounds. But if we have a
pointing-to rectangle, it is relative to the widgets allocation,
which is different from the bounds.

We were not handling the second case correctly, leading to context
menus in the text view being mispositioned by the widgets CSS padding.

While we are touching this code, rewrite it to handle transforms.

Fixes: #5695
This commit is contained in:
Matthias Clasen 2023-03-24 14:47:27 -04:00
parent c51387d62b
commit fb3fe7a353
1 changed files with 27 additions and 5 deletions
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32
gtk/gtkpopover.c
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@ -443,16 +443,38 @@ create_popup_layout (GtkPopover *popover)
GtkWidget *parent;
GtkCssStyle *style;
GtkBorder shadow_width;
GtkNative *native;
double nx, ny;
graphene_rect_t bounds;
parent = gtk_widget_get_parent (GTK_WIDGET (popover));
gtk_widget_get_surface_allocation (parent, &rect);
native = gtk_widget_get_native (parent);
if (priv->has_pointing_to)
{
rect.x += priv->pointing_to.x;
rect.y += priv->pointing_to.y;
rect.width = priv->pointing_to.width;
rect.height = priv->pointing_to.height;
graphene_matrix_t transform;
graphene_rect_t pointing_to = GRAPHENE_RECT_INIT (priv->pointing_to.x,
priv->pointing_to.y,
priv->pointing_to.width,
priv->pointing_to.height);
if (!gtk_widget_compute_transform (parent, GTK_WIDGET (native), &transform))
graphene_matrix_init_identity (&transform);
graphene_matrix_transform_bounds (&transform, &pointing_to, &bounds);
}
else
{
if (!gtk_widget_compute_bounds (parent, GTK_WIDGET (native), &bounds))
g_warning ("Failed to compute bounds");
}
gtk_native_get_surface_transform (native, &nx, &ny);
rect.x = (int) floor (bounds.origin.x + nx);
rect.y = (int) floor (bounds.origin.y + ny);
rect.width = (int) ceilf (bounds.size.width);
rect.width = (int) ceilf (bounds.size.height);
style = gtk_css_node_get_style (gtk_widget_get_css_node (GTK_WIDGET (priv->contents_widget)));
gtk_css_shadow_value_get_extents (style->background->box_shadow, &shadow_width);