gtk2/gtk/gtkseparator.c

294 lines
9.3 KiB
C

/* GTK - The GIMP Toolkit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
#include "config.h"
#include "gtkorientableprivate.h"
#include "gtkseparator.h"
#include "gtkprivate.h"
#include "gtkintl.h"
/**
* SECTION:gtkseparator
* @Short_description: A separator widget
* @Title: GtkSeparator
*
* GtkSeparator is a horizontal or vertical separator widget, depending on the
* value of the #GtkOrientable:orientation property, used to group the widgets within a
* window. It displays a line with a shadow to make it appear sunken into the
* interface.
*/
struct _GtkSeparatorPrivate
{
GtkOrientation orientation;
};
enum {
PROP_0,
PROP_ORIENTATION
};
static void gtk_separator_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void gtk_separator_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
static void gtk_separator_get_preferred_width
(GtkWidget *widget,
gint *minimum,
gint *natural);
static void gtk_separator_get_preferred_height
(GtkWidget *widget,
gint *minimum,
gint *natural);
static gboolean gtk_separator_draw (GtkWidget *widget,
cairo_t *cr);
G_DEFINE_TYPE_WITH_CODE (GtkSeparator, gtk_separator, GTK_TYPE_WIDGET,
G_IMPLEMENT_INTERFACE (GTK_TYPE_ORIENTABLE,
NULL))
static void
gtk_separator_class_init (GtkSeparatorClass *class)
{
GObjectClass *object_class = G_OBJECT_CLASS (class);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
object_class->set_property = gtk_separator_set_property;
object_class->get_property = gtk_separator_get_property;
widget_class->get_preferred_width = gtk_separator_get_preferred_width;
widget_class->get_preferred_height = gtk_separator_get_preferred_height;
widget_class->draw = gtk_separator_draw;
gtk_widget_class_set_accessible_role (widget_class, ATK_ROLE_SEPARATOR);
g_object_class_override_property (object_class, PROP_ORIENTATION, "orientation");
g_type_class_add_private (object_class, sizeof (GtkSeparatorPrivate));
}
static void
gtk_separator_init (GtkSeparator *separator)
{
GtkSeparatorPrivate *private;
GtkStyleContext *context;
separator->priv = G_TYPE_INSTANCE_GET_PRIVATE (separator,
GTK_TYPE_SEPARATOR,
GtkSeparatorPrivate);
private = separator->priv;
gtk_widget_set_has_window (GTK_WIDGET (separator), FALSE);
private->orientation = GTK_ORIENTATION_HORIZONTAL;
context = gtk_widget_get_style_context (GTK_WIDGET (separator));
gtk_style_context_add_class (context, GTK_STYLE_CLASS_SEPARATOR);
}
static void
gtk_separator_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkSeparator *separator = GTK_SEPARATOR (object);
GtkSeparatorPrivate *private = separator->priv;
switch (prop_id)
{
case PROP_ORIENTATION:
private->orientation = g_value_get_enum (value);
_gtk_orientable_set_style_classes (GTK_ORIENTABLE (object));
gtk_widget_queue_resize (GTK_WIDGET (object));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_separator_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkSeparator *separator = GTK_SEPARATOR (object);
GtkSeparatorPrivate *private = separator->priv;
switch (prop_id)
{
case PROP_ORIENTATION:
g_value_set_enum (value, private->orientation);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_separator_get_preferred_size (GtkWidget *widget,
GtkOrientation orientation,
gint *minimum,
gint *natural)
{
GtkSeparator *separator = GTK_SEPARATOR (widget);
GtkSeparatorPrivate *private = separator->priv;
GtkStyleContext *context;
GtkStateFlags state;
GtkBorder border;
gboolean wide_sep;
gint sep_width;
gint sep_height;
context = gtk_widget_get_style_context (widget);
state = gtk_widget_get_state_flags (widget);
gtk_style_context_get_border (context, state, &border);
gtk_widget_style_get (widget,
"wide-separators", &wide_sep,
"separator-width", &sep_width,
"separator-height", &sep_height,
NULL);
if (orientation == private->orientation)
{
*minimum = *natural = 1;
}
else if (orientation == GTK_ORIENTATION_VERTICAL)
{
*minimum = *natural = wide_sep ? sep_height : border.top;
}
else
{
*minimum = *natural = wide_sep ? sep_width : border.left;
}
}
static void
gtk_separator_get_preferred_width (GtkWidget *widget,
gint *minimum,
gint *natural)
{
gtk_separator_get_preferred_size (widget, GTK_ORIENTATION_HORIZONTAL, minimum, natural);
}
static void
gtk_separator_get_preferred_height (GtkWidget *widget,
gint *minimum,
gint *natural)
{
gtk_separator_get_preferred_size (widget, GTK_ORIENTATION_VERTICAL, minimum, natural);
}
static gboolean
gtk_separator_draw (GtkWidget *widget,
cairo_t *cr)
{
GtkSeparator *separator = GTK_SEPARATOR (widget);
GtkSeparatorPrivate *private = separator->priv;
GtkStateFlags state;
GtkStyleContext *context;
GtkBorder padding;
gboolean wide_separators;
gint separator_width;
gint separator_height;
int width, height;
context = gtk_widget_get_style_context (widget);
gtk_widget_style_get (widget,
"wide-separators", &wide_separators,
"separator-width", &separator_width,
"separator-height", &separator_height,
NULL);
state = gtk_widget_get_state_flags (widget);
width = gtk_widget_get_allocated_width (widget);
height = gtk_widget_get_allocated_height (widget);
gtk_style_context_get_padding (context, state, &padding);
gtk_style_context_save (context);
gtk_style_context_set_state (context, state);
if (private->orientation == GTK_ORIENTATION_HORIZONTAL)
{
if (wide_separators)
gtk_render_frame (context, cr,
0, (height - separator_height) / 2,
width, separator_height);
else
gtk_render_line (context, cr,
0, (height - padding.top) / 2,
width - 1, (height - padding.top) / 2);
}
else
{
if (wide_separators)
gtk_render_frame (context, cr,
(width - separator_width) / 2, 0,
separator_width, height);
else
gtk_render_line (context, cr,
(width - padding.left) / 2, 0,
(width - padding.left) / 2, height - 1);
}
gtk_style_context_restore (context);
return FALSE;
}
/**
* gtk_separator_new:
* @orientation: the separator's orientation.
*
* Creates a new #GtkSeparator with the given orientation.
*
* Return value: a new #GtkSeparator.
*
* Since: 3.0
*/
GtkWidget *
gtk_separator_new (GtkOrientation orientation)
{
return g_object_new (GTK_TYPE_SEPARATOR,
"orientation", orientation,
NULL);
}