From 421d3d8b0f2f2432ec02f57677da2964d339f2d8 Mon Sep 17 00:00:00 2001
From: Marco Pesenti Gritti <mpg@redhat.com>
Date: Tue, 07 Jun 2005 09:20:35 +0000
Subject: Add an async renderer interface (method + callback) which is useful for

2005-06-07  Marco Pesenti Gritti <mpg@redhat.com>

        * backend/Makefile.am:
        * backend/ev-async-renderer.c: (ev_async_renderer_get_type),
        (ev_async_renderer_class_init), (ev_async_renderer_render_pixbuf):
        * backend/ev-async-renderer.h:

        Add an async renderer interface (method + callback) which
        is useful for backends like ps.

        * backend/ev-job-queue.c: (remove_job_from_async_queue),
        (add_job_to_async_queue), (job_finished_cb), (handle_job),
        (ev_job_queue_run_next), (ev_job_queue_init), (find_queue),
        (ev_job_queue_add_job), (move_job_async), (move_job),
        (ev_job_queue_update_job), (ev_job_queue_remove_job):

        Add queues for async renderer, these are executed on the
        main thread.

        * backend/ev-jobs.c: (ev_job_render_new), (render_finished_cb),
        (ev_job_render_run):
        * backend/ev-jobs.h:

        If the backend support async renderer interface use it.

        * ps/ps-document.c: (ps_document_init), (push_pixbuf),
        (setup_pixmap), (ps_document_get_type),
        (ps_async_renderer_render_pixbuf),
        (ps_document_document_iface_init), (ps_async_renderer_iface_init):

        Implement async renderer interface.
---
(limited to 'backend/ev-async-renderer.c')

diff --git a/backend/ev-async-renderer.c b/backend/ev-async-renderer.c
new file mode 100644
index 0000000..45ca7e4
--- /dev/null
+++ b/backend/ev-async-renderer.c
@@ -0,0 +1,81 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */
+/*
+ *  Copyright (C) 2004 Marco Pesenti Gritti
+ *
+ *  This program 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 2, or (at your option)
+ *  any later version.
+ *
+ *  This program 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 this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ */
+
+#include "config.h"
+
+#include "ev-async-renderer.h"
+
+static void ev_async_renderer_class_init (gpointer g_class);
+
+enum
+{
+	RENDER_FINISHED,
+	LAST_SIGNAL
+};
+
+static guint signals[LAST_SIGNAL] = { 0 };
+
+GType
+ev_async_renderer_get_type (void)
+{
+	static GType type = 0;
+
+	if (G_UNLIKELY (type == 0))
+	{
+		static const GTypeInfo our_info =
+		{
+			sizeof (EvAsyncRendererIface),
+			NULL,
+			NULL,
+			(GClassInitFunc)ev_async_renderer_class_init
+		};
+
+		type = g_type_register_static (G_TYPE_INTERFACE,
+					       "EvAsyncRenderer",
+					       &our_info, (GTypeFlags)0);
+	}
+
+	return type;
+}
+
+static void
+ev_async_renderer_class_init (gpointer g_class)
+{
+	signals[RENDER_FINISHED] =
+		g_signal_new ("render_finished",
+			      EV_TYPE_ASYNC_RENDERER,
+			      G_SIGNAL_RUN_LAST,
+			      G_STRUCT_OFFSET (EvAsyncRendererIface, render_finished),
+			      NULL, NULL,
+			      g_cclosure_marshal_VOID__OBJECT,
+			      G_TYPE_NONE,
+			      1,
+			      GDK_TYPE_PIXBUF);
+}
+
+void
+ev_async_renderer_render_pixbuf (EvAsyncRenderer *async_renderer,
+			         int              page,
+			         double           scale)
+{
+	EvAsyncRendererIface *iface = EV_ASYNC_RENDERER_GET_IFACE (async_renderer);
+
+	iface->render_pixbuf (async_renderer, page, scale);
+}
--
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