[PATCH 12/25] Introduce a VncCursor object

["Daniel P. Berrange" <berrange redhat com>]

Introduce a VncCursor object to represent a client side rendered
pointer
---
 src/Makefile.am |    1 +
 src/vnccursor.c |  267 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 src/vnccursor.h |   75 ++++++++++++++++
 3 files changed, 343 insertions(+), 0 deletions(-)
 create mode 100644 src/vnccursor.c
 create mode 100644 src/vnccursor.h

diff --git a/src/Makefile.am b/src/Makefile.am
index b4b9872..f496e56 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -27,6 +27,7 @@ libgtk_vnc_1_0_la_SOURCES = blt.h blt1.h \
 	vncbaseframebufferblt.h \
 	vncbaseframebuffer.h vncbaseframebuffer.c \
 	vncimageframebuffer.h vncimageframebuffer.c \
+	vnccursor.h vnccursor.c \
 	vncconnection.h vncconnection.c \
         vncconnectionenums.h vncconnectionenums.c \
 	vncdisplay.h vncdisplay.c \
diff --git a/src/vnccursor.c b/src/vnccursor.c
new file mode 100644
index 0000000..f010ed2
--- /dev/null
+++ b/src/vnccursor.c
@@ -0,0 +1,267 @@
+/*
+ * GTK VNC Widget
+ *
+ * Copyright (C) 2006  Anthony Liguori <anthony codemonkey ws>
+ *
+ * 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 2.0 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA
+ */
+
+#include <config.h>
+
+#include "vnccursor.h"
+
+#include <string.h>
+
+#define VNC_CURSOR_GET_PRIVATE(obj) \
+      (G_TYPE_INSTANCE_GET_PRIVATE((obj), VNC_TYPE_CURSOR, VncCursorPrivate))
+
+struct _VncCursorPrivate
+{
+	guint8 *data;
+	guint16 hotx;
+	guint16 hoty;
+	guint16 width;
+	guint16 height;
+};
+
+G_DEFINE_TYPE(VncCursor, vnc_cursor, G_TYPE_OBJECT)
+
+/* Properties */
+enum
+{
+	PROP_0,
+	PROP_DATA,
+	PROP_HOTX,
+	PROP_HOTY,
+	PROP_WIDTH,
+	PROP_HEIGHT,
+};
+
+static void
+vnc_cursor_get_property(GObject    *object,
+			guint       prop_id,
+			GValue     *value,
+			GParamSpec *pspec)
+{
+	VncCursor *cursor = VNC_CURSOR (object);
+	VncCursorPrivate *priv = cursor->priv;
+
+	switch (prop_id) {
+	case PROP_DATA:
+		g_value_set_pointer(value, priv->data);
+		break;
+
+	case PROP_HOTX:
+		g_value_set_int(value, priv->hotx);
+		break;
+
+	case PROP_HOTY:
+		g_value_set_int(value, priv->hoty);
+		break;
+
+	case PROP_WIDTH:
+		g_value_set_int(value, priv->width);
+		break;
+
+	case PROP_HEIGHT:
+		g_value_set_int(value, priv->height);
+		break;
+
+	default:
+		G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+		break;
+	}
+}
+
+static void
+vnc_cursor_set_property(GObject      *object,
+			guint         prop_id,
+			const GValue *value,
+			GParamSpec   *pspec)
+{
+	VncCursor *cursor = VNC_CURSOR (object);
+	VncCursorPrivate *priv = cursor->priv;
+
+	switch (prop_id) {
+	case PROP_DATA:
+		if (priv->data)
+			g_free(priv->data);
+		priv->data = g_value_get_pointer(value);
+		break;
+
+	case PROP_HOTX:
+		priv->hotx = g_value_get_int(value);
+		break;
+
+	case PROP_HOTY:
+		priv->hoty = g_value_get_int(value);
+		break;
+
+	case PROP_WIDTH:
+		priv->width = g_value_get_int(value);
+		break;
+
+	case PROP_HEIGHT:
+		priv->height = g_value_get_int(value);
+		break;
+
+	default:
+		G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+		break;
+	}
+}
+
+VncCursor *vnc_cursor_new(guint8 *data,
+			  guint16 hotx, guint16 hoty,
+			  guint16 width, guint16 height)
+{
+	return VNC_CURSOR(g_object_new(VNC_TYPE_CURSOR,
+				       "data", data,
+				       "hotx", hotx,
+				       "hoty", hoty,
+				       "width", width,
+				       "height", height,
+				       NULL));
+}
+
+
+static void vnc_cursor_finalize (GObject *obj)
+{
+	VncCursor *cursor = VNC_CURSOR (obj);
+	VncCursorPrivate *priv = cursor->priv;
+
+	g_free(priv->data);
+
+	G_OBJECT_CLASS (vnc_cursor_parent_class)->finalize (obj);
+}
+
+static void vnc_cursor_class_init(VncCursorClass *klass)
+{
+	GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+	object_class->finalize = vnc_cursor_finalize;
+	object_class->get_property = vnc_cursor_get_property;
+	object_class->set_property = vnc_cursor_set_property;
+
+	g_object_class_install_property(object_class,
+					PROP_DATA,
+					g_param_spec_pointer("data",
+							     "Cursor pixel data",
+							     "Cursor pixel data in RGBA24 format",
+							     G_PARAM_READWRITE |
+							     G_PARAM_CONSTRUCT |
+							     G_PARAM_STATIC_NAME |
+							     G_PARAM_STATIC_NICK |
+							     G_PARAM_STATIC_BLURB));
+	g_object_class_install_property(object_class,
+					PROP_HOTX,
+					g_param_spec_int("hotx",
+							 "Cursor x hotspot",
+							 "Cursor x axis hotspot",
+							 0, 1 << 15, 0,
+							 G_PARAM_READWRITE |
+							 G_PARAM_CONSTRUCT |
+							 G_PARAM_STATIC_NAME |
+							 G_PARAM_STATIC_NICK |
+							 G_PARAM_STATIC_BLURB));
+	g_object_class_install_property(object_class,
+					PROP_HOTY,
+					g_param_spec_int("hoty",
+							 "Cursor y hotspot",
+							 "Cursor y axis hotspot",
+							 0, 1 << 15, 0,
+							 G_PARAM_READWRITE |
+							 G_PARAM_CONSTRUCT |
+							 G_PARAM_STATIC_NAME |
+							 G_PARAM_STATIC_NICK |
+							 G_PARAM_STATIC_BLURB));
+	g_object_class_install_property(object_class,
+					PROP_WIDTH,
+					g_param_spec_int("width",
+							 "Cursor width",
+							 "Cursor pixel data width",
+							 0, 1 << 15, 0,
+							 G_PARAM_READWRITE |
+							 G_PARAM_CONSTRUCT |
+							 G_PARAM_STATIC_NAME |
+							 G_PARAM_STATIC_NICK |
+							 G_PARAM_STATIC_BLURB));
+	g_object_class_install_property(object_class,
+					PROP_HEIGHT,
+					g_param_spec_int("height",
+							 "Cursor height",
+							 "Cursor pixel data height",
+							 0, 1 << 15, 0,
+							 G_PARAM_READWRITE |
+							 G_PARAM_CONSTRUCT |
+							 G_PARAM_STATIC_NAME |
+							 G_PARAM_STATIC_NICK |
+							 G_PARAM_STATIC_BLURB));
+
+	g_type_class_add_private(klass, sizeof(VncCursorPrivate));
+}
+
+static void vnc_cursor_init(VncCursor *cursor)
+{
+	VncCursorPrivate *priv;
+
+	priv = cursor->priv = VNC_CURSOR_GET_PRIVATE(cursor);
+	memset(priv, 0, sizeof(VncCursorPrivate));
+}
+
+const guint8 *vnc_cursor_get_data(VncCursor *cursor)
+{
+	VncCursorPrivate *priv = cursor->priv;
+
+	return priv->data;
+}
+
+guint16 vnc_cursor_get_hotx(VncCursor *cursor)
+{
+	VncCursorPrivate *priv = cursor->priv;
+
+	return priv->hotx;
+}
+
+guint16 vnc_cursor_get_hoty(VncCursor *cursor)
+{
+	VncCursorPrivate *priv = cursor->priv;
+
+	return priv->hoty;
+}
+
+
+guint16 vnc_cursor_get_width(VncCursor *cursor)
+{
+	VncCursorPrivate *priv = cursor->priv;
+
+	return priv->width;
+}
+
+guint16 vnc_cursor_get_height(VncCursor *cursor)
+{
+	VncCursorPrivate *priv = cursor->priv;
+
+	return priv->height;
+}
+
+
+/*
+ * Local variables:
+ *  c-indent-level: 8
+ *  c-basic-offset: 8
+ *  tab-width: 8
+ * End:
+ */
diff --git a/src/vnccursor.h b/src/vnccursor.h
new file mode 100644
index 0000000..9b6c937
--- /dev/null
+++ b/src/vnccursor.h
@@ -0,0 +1,75 @@
+/*
+ * GTK VNC Widget
+ *
+ * Copyright (C) 2009  Daniel P. Berrange <berrange redhat com>
+ *
+ * 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 2.0 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA
+ */
+
+#ifndef VNC_CURSOR_H
+#define VNC_CURSOR_H
+
+#include <glib-object.h>
+
+G_BEGIN_DECLS
+
+#define VNC_TYPE_CURSOR            (vnc_cursor_get_type())
+#define VNC_CURSOR(obj)            (G_TYPE_CHECK_INSTANCE_CAST((obj), VNC_TYPE_CURSOR, VncCursor))
+#define VNC_CURSOR_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST((klass), VNC_TYPE_CURSOR, VncCursorClass))
+#define VNC_IS_CURSOR(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj), VNC_TYPE_CURSOR))
+#define VNC_IS_CURSOR_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass), VNC_TYPE_CURSOR))
+#define VNC_CURSOR_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS((obj), VNC_TYPE_CURSOR, VncCursorClass))
+
+
+typedef struct _VncCursor VncCursor;
+typedef struct _VncCursorClass VncCursorClass;
+typedef struct _VncCursorPrivate VncCursorPrivate;
+
+struct _VncCursor
+{
+	GObject parent;
+
+	VncCursorPrivate *priv;
+};
+
+struct _VncCursorClass
+{
+	GObjectClass parent_class;
+};
+
+
+GType vnc_cursor_get_type(void);
+VncCursor *vnc_cursor_new(guint8 *rgba24data,
+			  guint16 hotx, guint16 hoty,
+			  guint16 width, guint16 height);
+
+const guint8 *vnc_cursor_get_data(VncCursor *cursor);
+
+guint16 vnc_cursor_get_hotx(VncCursor *cursor);
+guint16 vnc_cursor_get_hoty(VncCursor *cursor);
+
+guint16 vnc_cursor_get_width(VncCursor *cursor);
+guint16 vnc_cursor_get_height(VncCursor *cursor);
+
+G_END_DECLS
+
+#endif /* VNC_CURSOR_H */
+/*
+ * Local variables:
+ *  c-indent-level: 8
+ *  c-basic-offset: 8
+ *  tab-width: 8
+ * End:
+ */
-- 
1.6.5.2