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paned: Split out a function

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This commit is contained in:
Benjamin Otte 2013-04-29 18:20:22 +02:00
parent cb99cd2052
commit 9c2eb4f233
1 changed files with 60 additions and 35 deletions
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95
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 (GtkWidget *widget,
GtkOrientation orientation,
@ -2064,41 +2120,10 @@ gtk_paned_calc_position (GtkPaned *paned,
old_min_position = priv->min_position;
old_max_position = priv->max_position;
priv->min_position = priv->child1_shrink ? 0 : child1_req;
priv->max_position = allocation;
if (!priv->child2_shrink)
priv->max_position = MAX (1, priv->max_position - child2_req);
priv->max_position = MAX (priv->min_position, priv->max_position);
if (!priv->position_set)
{
if (priv->child1_resize && !priv->child2_resize)
priv->child1_size = MAX (0, allocation - child2_req);
else if (!priv->child1_resize && priv->child2_resize)
priv->child1_size = child1_req;
else if (child1_req + child2_req != 0)
priv->child1_size = allocation * ((gdouble)child1_req / (child1_req + child2_req)) + 0.5;
else
priv->child1_size = 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)
priv->child1_size += allocation - priv->last_allocation;
else if (!(!priv->child1_resize && priv->child2_resize))
priv->child1_size = allocation * ((gdouble) priv->child1_size / (priv->last_allocation)) + 0.5;
}
}
priv->child1_size = CLAMP (priv->child1_size,
priv->min_position,
priv->max_position);
gtk_paned_compute_position (paned,
allocation, child1_req, child2_req,
&priv->min_position, &priv->max_position,
&priv->child1_size);
if (priv->child1)
gtk_paned_set_child_visible (paned, 0, priv->child1_size != 0);