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paned: Correctly compute child sizes in size requests

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This commit is contained in:
Benjamin Otte 2013-04-30 01:58:59 +02:00
parent 6146bf7a32
commit d90e3670ce
1 changed files with 83 additions and 2 deletions
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85
gtk/gtkpaned.c
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@ -870,6 +870,62 @@ gtk_paned_finalize (GObject *object)
G_OBJECT_CLASS (gtk_paned_parent_class)->finalize (object);
}
static void
gtk_paned_compute_position (GtkPaned *paned,
gint allocation,
gint child1_req,
gint child2_req,
gint *min_pos,
gint *max_pos,
gint *out_pos)
{
GtkPanedPrivate *priv = paned->priv;
gint min, max, pos;
min = priv->child1_shrink ? 0 : child1_req;
max = allocation;
if (!priv->child2_shrink)
max = MAX (1, max - child2_req);
max = MAX (min, max);
if (!priv->position_set)
{
if (priv->child1_resize && !priv->child2_resize)
pos = MAX (0, allocation - child2_req);
else if (!priv->child1_resize && priv->child2_resize)
pos = child1_req;
else if (child1_req + child2_req != 0)
pos = allocation * ((gdouble)child1_req / (child1_req + child2_req)) + 0.5;
else
pos = allocation * 0.5 + 0.5;
}
else
{
/* If the position was set before the initial allocation.
* (priv->last_allocation <= 0) just clamp it and leave it.
*/
if (priv->last_allocation > 0)
{
if (priv->child1_resize && !priv->child2_resize)
pos = priv->child1_size + allocation - priv->last_allocation;
else if (!(!priv->child1_resize && priv->child2_resize))
pos = allocation * ((gdouble) priv->child1_size / (priv->last_allocation)) + 0.5;
}
else
pos = min;
}
pos = CLAMP (pos, min, max);
if (min_pos)
*min_pos = pos;
if (max_pos)
*max_pos = pos;
if (out_pos)
*out_pos = pos;
}
static void
gtk_paned_get_preferred_size_for_orientation (GtkWidget *widget,
gint size,
@ -921,15 +977,40 @@ gtk_paned_get_preferred_size_for_opposite_orientation (GtkWidget *widget,
{
GtkPaned *paned = GTK_PANED (widget);
GtkPanedPrivate *priv = paned->priv;
gint for_child1, for_child2;
gint child_min, child_nat;
if (size > -1 &&
priv->child1 && gtk_widget_get_visible (priv->child1) &&
priv->child2 && gtk_widget_get_visible (priv->child2))
{
gint child1_req, child2_req;
gint handle_size;
gtk_widget_style_get (widget, "handle-size", &handle_size, NULL);
_gtk_widget_get_preferred_size_for_size (priv->child1, priv->orientation, -1, &child1_req, NULL, NULL, NULL);
_gtk_widget_get_preferred_size_for_size (priv->child2, priv->orientation, -1, &child2_req, NULL, NULL, NULL);
gtk_paned_compute_position (paned,
size, child1_req, child2_req,
NULL, NULL, &for_child1);
for_child2 = size - for_child1 - handle_size;
}
else
{
for_child1 = size;
for_child2 = size;
}
*minimum = *natural = 0;
if (priv->child1 && gtk_widget_get_visible (priv->child1))
{
_gtk_widget_get_preferred_size_for_size (priv->child1,
OPPOSITE_ORIENTATION (priv->orientation),
size,
for_child1,
&child_min, &child_nat,
NULL, NULL);
@ -941,7 +1022,7 @@ gtk_paned_get_preferred_size_for_opposite_orientation (GtkWidget *widget,
{
_gtk_widget_get_preferred_size_for_size (priv->child2,
OPPOSITE_ORIENTATION (priv->orientation),
size,
for_child2,
&child_min, &child_nat,
NULL, NULL);