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Added proper height-for-width implementation to GtkAlignment.

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For "padding" cases, it would be ok to fallback on GtkBin class
implementation of height-for-width. However in cases where the
user set's an xscale/yscale the GtkAlignment needs to take care
of properly adjusting the for_size when querying it's child.
This commit is contained in:
Tristan Van Berkom 2010-12-29 16:18:04 +09:00
parent 7fab89d93f
commit 2fe4e6a815
1 changed files with 66 additions and 4 deletions
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70
gtk/gtkalignment.c
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@ -102,6 +102,14 @@ static void gtk_alignment_get_preferred_width (GtkWidget *wid
static void gtk_alignment_get_preferred_height (GtkWidget *widget,
gint *minimum_size,
gint *natural_size);
static void gtk_alignment_get_preferred_width_for_height (GtkWidget *widget,
gint for_size,
gint *minimum_size,
gint *natural_size);
static void gtk_alignment_get_preferred_height_for_width (GtkWidget *widget,
gint for_size,
gint *minimum_size,
gint *natural_size);
G_DEFINE_TYPE (GtkAlignment, gtk_alignment, GTK_TYPE_BIN)
@ -120,6 +128,8 @@ gtk_alignment_class_init (GtkAlignmentClass *class)
widget_class->size_allocate = gtk_alignment_size_allocate;
widget_class->get_preferred_width = gtk_alignment_get_preferred_width;
widget_class->get_preferred_height = gtk_alignment_get_preferred_height;
widget_class->get_preferred_width_for_height = gtk_alignment_get_preferred_width_for_height;
widget_class->get_preferred_height_for_width = gtk_alignment_get_preferred_height_for_width;
g_object_class_install_property (gobject_class,
PROP_XALIGN,
@ -571,6 +581,7 @@ gtk_alignment_size_allocate (GtkWidget *widget,
static void
gtk_alignment_get_preferred_size (GtkWidget *widget,
GtkOrientation orientation,
gint for_size,
gint *minimum_size,
gint *natural_size)
{
@ -589,12 +600,44 @@ gtk_alignment_get_preferred_size (GtkWidget *widget,
if (orientation == GTK_ORIENTATION_HORIZONTAL)
{
minimum += (priv->padding_left + priv->padding_right);
gtk_widget_get_preferred_width (child, &child_min, &child_nat);
if (for_size < 0)
gtk_widget_get_preferred_width (child, &child_min, &child_nat);
else
{
gint min_height;
gtk_widget_get_preferred_height (child, &min_height, NULL);
for_size -= (priv->padding_top + priv->padding_bottom);
if (for_size > min_height)
for_size = (min_height * (1.0 - priv->yscale) +
for_size * priv->yscale);
gtk_widget_get_preferred_width_for_height (child, for_size, &child_min, &child_nat);
}
}
else
{
minimum += (priv->padding_top + priv->padding_bottom);
gtk_widget_get_preferred_height (child, &child_min, &child_nat);
if (for_size < 0)
gtk_widget_get_preferred_height (child, &child_min, &child_nat);
else
{
gint min_width;
gtk_widget_get_preferred_width (child, &min_width, NULL);
for_size -= (priv->padding_left + priv->padding_right);
if (for_size > min_width)
for_size = (min_width * (1.0 - priv->xscale) +
for_size * priv->xscale);
gtk_widget_get_preferred_height_for_width (child, for_size, &child_min, &child_nat);
}
}
natural = minimum;
@ -615,7 +658,7 @@ gtk_alignment_get_preferred_width (GtkWidget *widget,
gint *minimum_size,
gint *natural_size)
{
gtk_alignment_get_preferred_size (widget, GTK_ORIENTATION_HORIZONTAL, minimum_size, natural_size);
gtk_alignment_get_preferred_size (widget, GTK_ORIENTATION_HORIZONTAL, -1, minimum_size, natural_size);
}
static void
@ -623,7 +666,26 @@ gtk_alignment_get_preferred_height (GtkWidget *widget,
gint *minimum_size,
gint *natural_size)
{
gtk_alignment_get_preferred_size (widget, GTK_ORIENTATION_VERTICAL, minimum_size, natural_size);
gtk_alignment_get_preferred_size (widget, GTK_ORIENTATION_VERTICAL, -1, minimum_size, natural_size);
}
static void
gtk_alignment_get_preferred_width_for_height (GtkWidget *widget,
gint for_size,
gint *minimum_size,
gint *natural_size)
{
gtk_alignment_get_preferred_size (widget, GTK_ORIENTATION_HORIZONTAL, for_size, minimum_size, natural_size);
}
static void
gtk_alignment_get_preferred_height_for_width (GtkWidget *widget,
gint for_size,
gint *minimum_size,
gint *natural_size)
{
gtk_alignment_get_preferred_size (widget, GTK_ORIENTATION_VERTICAL, for_size, minimum_size, natural_size);
}
/**