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/*
* ld-canvas.c
*
* This file is a part of logdiag.
* Copyright Přemysl Janouch 2010. All rights reserved.
*
* See the file LICENSE for licensing information.
*
*/
#include <gtk/gtk.h>
#include "config.h"
#include "ld-canvas.h"
#include "ld-document.h"
/* http://www.gnomejournal.org/article/34/writing-a-widget-using-cairo-and-gtk28 */
/**
* SECTION:ld-canvas
* @short_description: A canvas.
* @see_also: #LdDocument
*
* #LdCanvas is used for displaying #LdDocument objects.
*/
/*
* LdCanvasPrivate:
* @document: A document object assigned to this canvas as a model.
*/
struct _LdCanvasPrivate
{
LdDocument *document;
};
G_DEFINE_TYPE (LdCanvas, ld_canvas, GTK_TYPE_DRAWING_AREA);
static void
ld_canvas_finalize (GObject *gobject);
static void
ld_canvas_class_init (LdCanvasClass *klass)
{
GObjectClass *object_class;
GtkWidgetClass *widget_class;
object_class = G_OBJECT_CLASS (klass);
object_class->finalize = ld_canvas_finalize;
widget_class = GTK_WIDGET_CLASS (klass);
/**
* LdCanvas::set-scroll-adjustments:
* @canvas: The canvas object.
*
* Contents of the library have changed.
*/
/*
widget_class->set_scroll_adjustments_signal = g_signal_new
("set-scroll-adjustments", G_TYPE_FROM_CLASS (widget_class),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
0, // G_STRUCT_OFFSET (LdCanvasClass, ...)
NULL, NULL,
gtk_marshal_NONE__POINTER_POINTER,
G_TYPE_NONE, 2, GTK_TYPE_ADJUSTMENT, GTK_TYPE_ADJUSTMENT);
*/
g_type_class_add_private (klass, sizeof (LdCanvasPrivate));
}
static void
ld_canvas_init (LdCanvas *self)
{
self->priv = G_TYPE_INSTANCE_GET_PRIVATE
(self, LD_TYPE_CANVAS, LdCanvasPrivate);
}
static void
ld_canvas_finalize (GObject *gobject)
{
LdCanvas *self;
self = LD_CANVAS (gobject);
/* Chain up to the parent class. */
G_OBJECT_CLASS (ld_canvas_parent_class)->finalize (gobject);
}
/**
* ld_canvas_new:
*
* Create an instance.
*/
LdCanvas *
ld_canvas_new (void)
{
return g_object_new (LD_TYPE_CANVAS, NULL);
}
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