wxSize wxControl::DoGetBestSize() const
{
// Do not return any arbitrary default value...
wxASSERT_MSG( m_widget, wxT("DoGetBestSize called before creation") );
wxSize best;
if (m_wxwindow)
{
// this is not a native control, size_request is likely to be (0,0)
best = wxControlBase::DoGetBestSize();
}
else
{
GtkRequisition req;
#ifdef __WXGTK3__
if (gtk_widget_get_request_mode(m_widget) != GTK_SIZE_REQUEST_HEIGHT_FOR_WIDTH)
{
gtk_widget_get_preferred_height(m_widget, NULL, &req.height);
gtk_widget_get_preferred_width_for_height(m_widget, req.height, NULL, &req.width);
}
else
{
gtk_widget_get_preferred_width(m_widget, NULL, &req.width);
gtk_widget_get_preferred_height_for_width(m_widget, req.width, NULL, &req.height);
}
#else
GTK_WIDGET_GET_CLASS(m_widget)->size_request(m_widget, &req);
#endif
best.Set(req.width, req.height);
}
CacheBestSize(best);
return best;
}
/**
* gtk_widget_get_preferred_size:
* @widget: a #GtkWidget instance
* @minimum_size: (out) (allow-none): location for storing the minimum size, or %NULL
* @natural_size: (out) (allow-none): location for storing the natural size, or %NULL
*
* Retrieves the minimum and natural size of a widget, taking
* into account the widget's preference for height-for-width management.
*
* This is used to retrieve a suitable size by container widgets which do
* not impose any restrictions on the child placement. It can be used
* to deduce toplevel window and menu sizes as well as child widgets in
* free-form containers such as GtkLayout.
*
* <note><para>Handle with care. Note that the natural height of a height-for-width
* widget will generally be a smaller size than the minimum height, since the required
* height for the natural width is generally smaller than the required height for
* the minimum width.</para></note>
*
* Since: 3.0
*/
void
gtk_widget_get_preferred_size (GtkWidget *widget,
GtkRequisition *minimum_size,
GtkRequisition *natural_size)
{
gint min_width, nat_width;
gint min_height, nat_height;
g_return_if_fail (GTK_IS_WIDGET (widget));
if (gtk_widget_get_request_mode (widget) == GTK_SIZE_REQUEST_HEIGHT_FOR_WIDTH)
{
gtk_widget_get_preferred_width (widget, &min_width, &nat_width);
if (minimum_size)
{
minimum_size->width = min_width;
gtk_widget_get_preferred_height_for_width (widget, min_width,
&minimum_size->height, NULL);
}
if (natural_size)
{
natural_size->width = nat_width;
gtk_widget_get_preferred_height_for_width (widget, nat_width,
NULL, &natural_size->height);
}
}
else /* GTK_SIZE_REQUEST_WIDTH_FOR_HEIGHT or CONSTANT_SIZE */
{
gtk_widget_get_preferred_height (widget, &min_height, &nat_height);
if (minimum_size)
{
minimum_size->height = min_height;
gtk_widget_get_preferred_width_for_height (widget, min_height,
&minimum_size->width, NULL);
}
if (natural_size)
{
natural_size->height = nat_height;
gtk_widget_get_preferred_width_for_height (widget, nat_height,
NULL, &natural_size->width);
}
}
}
static void
gtk_widget_query_size_for_orientation (GtkWidget *widget,
GtkOrientation orientation,
gint for_size,
gint *minimum_size,
gint *natural_size)
{
SizeRequestCache *cache;
gint min_size = 0;
gint nat_size = 0;
gboolean found_in_cache;
if (gtk_widget_get_request_mode (widget) == GTK_SIZE_REQUEST_CONSTANT_SIZE)
for_size = -1;
cache = _gtk_widget_peek_request_cache (widget);
found_in_cache = _gtk_size_request_cache_lookup (cache,
orientation,
for_size,
&min_size,
&nat_size);
if (!found_in_cache)
{
gint adjusted_min, adjusted_natural, adjusted_for_size = for_size;
G_GNUC_BEGIN_IGNORE_DEPRECATIONS;
gtk_widget_ensure_style (widget);
G_GNUC_END_IGNORE_DEPRECATIONS;
if (orientation == GTK_ORIENTATION_HORIZONTAL)
{
if (for_size < 0)
{
push_recursion_check (widget, orientation, for_size);
GTK_WIDGET_GET_CLASS (widget)->get_preferred_width (widget, &min_size, &nat_size);
pop_recursion_check (widget, orientation);
}
else
{
gint ignored_position = 0;
gint minimum_height;
gint natural_height;
/* Pull the base natural height from the cache as it's needed to adjust
* the proposed 'for_size' */
gtk_widget_get_preferred_height (widget, &minimum_height, &natural_height);
/* convert for_size to unadjusted height (for_size is a proposed allocation) */
GTK_WIDGET_GET_CLASS (widget)->adjust_size_allocation (widget,
GTK_ORIENTATION_VERTICAL,
&minimum_height,
&natural_height,
&ignored_position,
&adjusted_for_size);
push_recursion_check (widget, orientation, for_size);
GTK_WIDGET_GET_CLASS (widget)->get_preferred_width_for_height (widget,
MAX (adjusted_for_size, minimum_height),
&min_size, &nat_size);
pop_recursion_check (widget, orientation);
}
}
else
{
if (for_size < 0)
{
push_recursion_check (widget, orientation, for_size);
GTK_WIDGET_GET_CLASS (widget)->get_preferred_height (widget, &min_size, &nat_size);
pop_recursion_check (widget, orientation);
}
else
{
gint ignored_position = 0;
gint minimum_width;
gint natural_width;
/* Pull the base natural width from the cache as it's needed to adjust
* the proposed 'for_size' */
gtk_widget_get_preferred_width (widget, &minimum_width, &natural_width);
/* convert for_size to unadjusted width (for_size is a proposed allocation) */
GTK_WIDGET_GET_CLASS (widget)->adjust_size_allocation (widget,
GTK_ORIENTATION_HORIZONTAL,
&minimum_width,
&natural_width,
&ignored_position,
&adjusted_for_size);
push_recursion_check (widget, orientation, for_size);
GTK_WIDGET_GET_CLASS (widget)->get_preferred_height_for_width (widget,
MAX (adjusted_for_size, minimum_width),
&min_size, &nat_size);
pop_recursion_check (widget, orientation);
}
}
if (min_size > nat_size)
{
g_warning ("%s %p reported min size %d and natural size %d in %s(); natural size must be >= min size",
G_OBJECT_TYPE_NAME (widget), widget, min_size, nat_size, get_vfunc_name (orientation, for_size));
}
adjusted_min = min_size;
adjusted_natural = nat_size;
GTK_WIDGET_GET_CLASS (widget)->adjust_size_request (widget,
orientation,
&adjusted_min,
&adjusted_natural);
if (adjusted_min < min_size ||
adjusted_natural < nat_size)
{
g_warning ("%s %p adjusted size %s min %d natural %d must not decrease below min %d natural %d",
G_OBJECT_TYPE_NAME (widget), widget,
orientation == GTK_ORIENTATION_VERTICAL ? "vertical" : "horizontal",
adjusted_min, adjusted_natural,
min_size, nat_size);
/* don't use the adjustment */
}
else if (adjusted_min > adjusted_natural)
{
g_warning ("%s %p adjusted size %s min %d natural %d original min %d natural %d has min greater than natural",
G_OBJECT_TYPE_NAME (widget), widget,
orientation == GTK_ORIENTATION_VERTICAL ? "vertical" : "horizontal",
adjusted_min, adjusted_natural,
min_size, nat_size);
/* don't use the adjustment */
}
else
{
/* adjustment looks good */
min_size = adjusted_min;
nat_size = adjusted_natural;
}
_gtk_size_request_cache_commit (cache,
orientation,
for_size,
min_size,
nat_size);
}
if (minimum_size)
*minimum_size = min_size;
if (natural_size)
*natural_size = nat_size;
g_assert (min_size <= nat_size);
GTK_NOTE (SIZE_REQUEST,
g_print ("[%p] %s\t%s: %d is minimum %d and natural: %d (hit cache: %s)\n",
widget, G_OBJECT_TYPE_NAME (widget),
orientation == GTK_ORIENTATION_HORIZONTAL ?
"width for height" : "height for width" ,
for_size, min_size, nat_size,
found_in_cache ? "yes" : "no"));
}
static void
gstyle_slidein_get_preferred_height (GtkWidget *widget,
gint *min_height,
gint *nat_height)
{
GstyleSlidein *self = (GstyleSlidein *)widget;
GtkWidget *child;
gint min_height_slide_based;
gint nat_height_slide_based;
g_assert (GSTYLE_IS_SLIDEIN (self));
*min_height = *nat_height = 1;
child = gtk_bin_get_child (GTK_BIN (self));
if (child != NULL)
gtk_widget_get_preferred_width (child, min_height, nat_height);
if (self->interpolate_size ||
(self->overlay_child != NULL && gtk_widget_get_visible (self->overlay_child)))
{
if (gtk_widget_get_request_mode (self->overlay_child) == GTK_SIZE_REQUEST_HEIGHT_FOR_WIDTH)
{
gint min_width;
gint nat_width;
gtk_widget_get_preferred_width (self->overlay_child, &min_width, &nat_width);
GTK_WIDGET_GET_CLASS(self->overlay_child)->get_preferred_height_for_width (self->overlay_child,
min_width,
&min_height_slide_based,
&nat_height_slide_based);
}
else
gtk_widget_get_preferred_height (self->overlay_child, &min_height_slide_based, &nat_height_slide_based);
if (get_orientation (self) == GTK_ORIENTATION_VERTICAL)
{
if (!self->interpolate_size)
{
min_height_slide_based *= self->offset;
nat_height_slide_based *= self->offset;
}
if (self->slide_fraction > 0)
{
min_height_slide_based /= self->slide_fraction;
nat_height_slide_based /= self->slide_fraction;
}
min_height_slide_based += self->slide_margin;
nat_height_slide_based += self->slide_margin;
}
/* TODO: add dynamic grow/shrink mode */
*min_height = MAX (*min_height, min_height_slide_based);
*nat_height = MAX (*nat_height, nat_height_slide_based);
}
else
{
*min_height = MAX (*min_height, self->slide_margin);
*nat_height = MAX (*nat_height, self->slide_margin);
}
}