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/* A Gtk Widget that inherits GtkFixed, but can be shrinked.
Copyright (C) 2011 Free Software Foundation, Inc.
This file is part of GNU Emacs.
GNU Emacs is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
GNU Emacs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
#include "emacsgtkfixed.h"
struct _EmacsFixedPrivate
{
int minwidth, minheight;
};
static void emacs_fixed_get_preferred_width (GtkWidget *widget,
gint *minimum,
gint *natural);
static void emacs_fixed_get_preferred_height (GtkWidget *widget,
gint *minimum,
gint *natural);
G_DEFINE_TYPE (EmacsFixed, emacs_fixed, GTK_TYPE_FIXED)
static void
emacs_fixed_class_init (EmacsFixedClass *klass)
{
GtkWidgetClass *widget_class;
GtkFixedClass *fixed_class;
widget_class = (GtkWidgetClass*) klass;
fixed_class = (GtkFixedClass*) klass;
widget_class->get_preferred_width = emacs_fixed_get_preferred_width;
widget_class->get_preferred_height = emacs_fixed_get_preferred_height;
g_type_class_add_private (klass, sizeof (EmacsFixedPrivate));
}
static GType
emacs_fixed_child_type (GtkFixed *container)
{
return GTK_TYPE_WIDGET;
}
static void
emacs_fixed_init (EmacsFixed *fixed)
{
fixed->priv = G_TYPE_INSTANCE_GET_PRIVATE (fixed, EMACS_TYPE_FIXED,
EmacsFixedPrivate);
fixed->priv->minwidth = fixed->priv->minheight = 0;
}
/**
* emacs_fixed_new:
*
* Creates a new #EmacsFixed.
*
* Returns: a new #EmacsFixed.
*/
GtkWidget*
emacs_fixed_new (void)
{
return g_object_new (EMACS_TYPE_FIXED, NULL);
}
static GtkWidgetClass *
get_parent_class (EmacsFixed *fixed)
{
EmacsFixedClass *klass = EMACS_FIXED_GET_CLASS (fixed);
GtkFixedClass *parent_class = g_type_class_peek_parent (klass);
return (GtkWidgetClass*) parent_class;
}
static void
emacs_fixed_get_preferred_width (GtkWidget *widget,
gint *minimum,
gint *natural)
{
EmacsFixed *fixed = EMACS_FIXED (widget);
EmacsFixedPrivate *priv = fixed->priv;
GtkWidgetClass *widget_class = get_parent_class (fixed);
widget_class->get_preferred_width (widget, minimum, natural);
if (minimum) *minimum = priv->minwidth;
}
static void
emacs_fixed_get_preferred_height (GtkWidget *widget,
gint *minimum,
gint *natural)
{
EmacsFixed *fixed = EMACS_FIXED (widget);
EmacsFixedPrivate *priv = fixed->priv;
GtkWidgetClass *widget_class = get_parent_class (fixed);
widget_class->get_preferred_height (widget, minimum, natural);
if (minimum) *minimum = priv->minheight;
}
void
emacs_fixed_set_min_size (EmacsFixed *widget, int width, int height)
{
EmacsFixedPrivate *priv = widget->priv;
GtkWidgetClass *widget_class = get_parent_class (widget);
int mw, nw, mh, nh;
widget_class->get_preferred_height (GTK_WIDGET (widget), &mh, &nh);
widget_class->get_preferred_width (GTK_WIDGET (widget), &mw, &nw);
/* Gtk complains if min size is less than natural size. */
if (width <= nw) priv->minwidth = width;
if (height <= nh) priv->minheight = height;
}
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