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