100 lines
2.1 KiB
C
100 lines
2.1 KiB
C
/*
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* canvas.c
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*
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* This file is a part of logdiag.
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* Copyright Přemysl Janouch 2010. All rights reserved.
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*
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* See the file LICENSE for licensing information.
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*
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*/
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#include <gtk/gtk.h>
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#include "config.h"
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#include "canvas.h"
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#include "document.h"
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/* http://www.gnomejournal.org/article/34/writing-a-widget-using-cairo-and-gtk28 */
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/**
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* SECTION:canvas
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* @short_description: A canvas.
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* @see_also: #LogdiagDocument
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*
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* #LogdiagCanvas is used for displaying #LogdiagDocument objects.
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*/
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/*
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* LogdiagCanvasPrivate:
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* @document: A document object assigned to this canvas as a model.
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*/
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struct _LogdiagCanvasPrivate
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{
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LogdiagDocument *document;
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};
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G_DEFINE_TYPE (LogdiagCanvas, logdiag_canvas, GTK_TYPE_DRAWING_AREA);
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static void
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logdiag_canvas_finalize (GObject *gobject);
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static void
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logdiag_canvas_class_init (LogdiagCanvasClass *klass)
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{
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GObjectClass *object_class;
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GtkWidgetClass *widget_class;
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object_class = G_OBJECT_CLASS (klass);
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object_class->finalize = logdiag_canvas_finalize;
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widget_class = GTK_WIDGET_CLASS (klass);
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/**
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* LogdiagCanvas::set-scroll-adjustments:
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* @canvas: The canvas object.
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*
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* Contents of the library have changed.
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*/
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/*
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widget_class->set_scroll_adjustments_signal = g_signal_new
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("set-scroll-adjustments", G_TYPE_FROM_CLASS (widget_class),
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G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
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0, // G_STRUCT_OFFSET (LogdiagCanvasClass, ...)
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NULL, NULL,
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gtk_marshal_NONE__POINTER_POINTER,
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G_TYPE_NONE, 2, GTK_TYPE_ADJUSTMENT, GTK_TYPE_ADJUSTMENT);
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*/
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g_type_class_add_private (klass, sizeof (LogdiagCanvasPrivate));
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}
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static void
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logdiag_canvas_init (LogdiagCanvas *self)
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{
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self->priv = G_TYPE_INSTANCE_GET_PRIVATE
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(self, LOGDIAG_TYPE_CANVAS, LogdiagCanvasPrivate);
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}
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static void
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logdiag_canvas_finalize (GObject *gobject)
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{
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LogdiagCanvas *self;
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self = LOGDIAG_CANVAS (gobject);
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/* Chain up to the parent class. */
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G_OBJECT_CLASS (logdiag_canvas_parent_class)->finalize (gobject);
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}
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/**
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* logdiag_canvas_new:
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*
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* Create an instance.
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*/
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LogdiagCanvas *
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logdiag_canvas_new (void)
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{
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return g_object_new (LOGDIAG_TYPE_CANVAS, NULL);
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}
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