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[gnome-color-manager] Add GcmSampleWindow so we can measure known colors in gcm-picker

commit 0e6f7205174aef7acf0ab26f5e86f70f4545c570
Author: Richard Hughes <richard hughsie com>
Date:   Sun Jul 25 18:11:02 2010 +0100

    Add GcmSampleWindow so we can measure known colors in gcm-picker

 libcolor-glib/Makefile.am         |    3 +
 libcolor-glib/gcm-sample-window.c |  167 +++++++++++++++++++++++++++++++++++++
 libcolor-glib/gcm-sample-window.h |   63 ++++++++++++++
 libcolor-glib/gcm-self-test.c     |   29 ++++++-
 4 files changed, 260 insertions(+), 2 deletions(-)
---
diff --git a/libcolor-glib/Makefile.am b/libcolor-glib/Makefile.am
index e032d13..71b8c89 100644
--- a/libcolor-glib/Makefile.am
+++ b/libcolor-glib/Makefile.am
@@ -47,12 +47,15 @@ libcolor_glib_include_HEADERS =					\
 	gcm-profile-store.h					\
 	gcm-dmi.h						\
 	gcm-version.h						\
+	gcm-sample-window.h					\
 	$(NULL)
 
 libcolor_glib_la_SOURCES =					\
 	libcolor-glib.h						\
 	egg-debug.c						\
 	egg-debug.h						\
+	gcm-sample-window.c					\
+	gcm-sample-window.h					\
 	gcm-common.c						\
 	gcm-common.h						\
 	gcm-color.c						\
diff --git a/libcolor-glib/gcm-sample-window.c b/libcolor-glib/gcm-sample-window.c
new file mode 100644
index 0000000..0557c7a
--- /dev/null
+++ b/libcolor-glib/gcm-sample-window.c
@@ -0,0 +1,167 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*-
+ *
+ * Copyright (C) 2009-2010 Richard Hughes <richard hughsie com>
+ *
+ * Licensed under the GNU General Public License Version 2
+ *
+ * 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 of the License, 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+/**
+ * SECTION:gcm-sample_window
+ * @short_description: Color lookup table object
+ *
+ * This object represents a color lookup table that is useful to manipulating
+ * gamma values in a trivial RGB color space.
+ */
+
+#include "config.h"
+
+#include <glib-object.h>
+#include "gcm-sample-window.h"
+
+#include "egg-debug.h"
+
+static void     gcm_sample_window_finalize	(GObject     *object);
+
+#define GCM_SAMPLE_WINDOW_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), GCM_TYPE_SAMPLE_WINDOW, GcmSampleWindowPrivate))
+
+/**
+ * GcmSampleWindowPrivate:
+ *
+ * Private #GcmSampleWindow data
+ **/
+struct _GcmSampleWindowPrivate
+{
+	GtkWidget			*image;
+};
+
+G_DEFINE_TYPE (GcmSampleWindow, gcm_sample_window, GTK_TYPE_WINDOW)
+
+/**
+ * gcm_sample_window_set_color:
+ * @sample_window: a valid #GcmSampleWindow instance
+ * @red: the red color value
+ * @green: the green color value
+ * @blue: the blue color value
+ *
+ * Sets the window to a specific color.
+ *
+ * Since: 0.0.1
+ **/
+void
+gcm_sample_window_set_color (GcmSampleWindow *sample_window, guint8 red, guint8 green, guint8 blue)
+{
+	GdkPixbuf *pixbuf;
+	gint width;
+	gint height;
+	gint i;
+	guchar *data;
+	guchar *pixels;
+	GtkWindow *window = GTK_WINDOW (sample_window);
+
+	/* get the window size */
+	gtk_window_get_size (window, &width, &height);
+
+	/* if no pixbuf, create it */
+	pixbuf = gtk_image_get_pixbuf (GTK_IMAGE (sample_window->priv->image));
+	if (pixbuf == NULL) {
+		data = g_new0 (guchar, width*height*3);
+		pixbuf = gdk_pixbuf_new_from_data (data, GDK_COLORSPACE_RGB, FALSE, 8, width, height, width*3, (GdkPixbufDestroyNotify) g_free, NULL);
+		gtk_image_set_from_pixbuf (GTK_IMAGE (sample_window->priv->image), pixbuf);
+	}
+
+	/* set the pixel array */
+	pixels = gdk_pixbuf_get_pixels (pixbuf);
+	for (i=0; i<width*height*3; i+=3) {
+		pixels[i+0] = red;
+		pixels[i+1] = green;
+		pixels[i+2] = blue;
+	}
+}
+
+/**
+ * gcm_sample_window_class_init:
+ **/
+static void
+gcm_sample_window_class_init (GcmSampleWindowClass *klass)
+{
+	GObjectClass *object_class = G_OBJECT_CLASS (klass);
+	object_class->finalize = gcm_sample_window_finalize;
+	g_type_class_add_private (klass, sizeof (GcmSampleWindowPrivate));
+}
+
+/**
+ * gcm_sample_window_init:
+ **/
+static void
+gcm_sample_window_init (GcmSampleWindow *sample_window)
+{
+	GtkWindow *window = GTK_WINDOW (sample_window);
+	sample_window->priv = GCM_SAMPLE_WINDOW_GET_PRIVATE (sample_window);
+	sample_window->priv->image = gtk_image_new ();
+	gtk_widget_set_size_request (sample_window->priv->image, 200, 200);
+	gtk_container_add (GTK_CONTAINER (sample_window), sample_window->priv->image);
+	gtk_widget_show (sample_window->priv->image);
+
+	/* show on all virtual desktops */
+	gtk_window_stick (window);
+	gtk_window_set_default_size (window, 200, 200);
+
+}
+
+/**
+ * gcm_sample_window_finalize:
+ **/
+static void
+gcm_sample_window_finalize (GObject *object)
+{
+	GcmSampleWindow *sample_window = GCM_SAMPLE_WINDOW (object);
+	GcmSampleWindowPrivate *priv = sample_window->priv;
+
+	g_object_unref (priv->image);
+
+	G_OBJECT_CLASS (gcm_sample_window_parent_class)->finalize (object);
+}
+
+/**
+ * gcm_sample_window_new:
+ *
+ * Return value: a new #GcmSampleWindow object.
+ **/
+GtkWindow *
+gcm_sample_window_new (void)
+{
+	GcmSampleWindow *sample_window;
+	sample_window = g_object_new (GCM_TYPE_SAMPLE_WINDOW,
+				      "accept-focus", FALSE,
+				      "decorated", FALSE,
+				      "default-height", 200,
+				      "default-width", 200,
+				      "deletable", FALSE,
+				      "destroy-with-parent", TRUE,
+				      "icon-name", "icc-profile",
+				      "modal", TRUE,
+				      "resizable", FALSE,
+				      "skip-pager-hint", TRUE,
+				      "skip-taskbar-hint", TRUE,
+				      "title", "calibration square",
+				      "type-hint", GDK_WINDOW_TYPE_HINT_SPLASHSCREEN,
+				      "urgency-hint", TRUE,
+				      "window-position", GTK_WIN_POS_CENTER_ALWAYS,
+				      NULL);
+	return GTK_WINDOW (sample_window);
+}
+
diff --git a/libcolor-glib/gcm-sample-window.h b/libcolor-glib/gcm-sample-window.h
new file mode 100644
index 0000000..73f8f87
--- /dev/null
+++ b/libcolor-glib/gcm-sample-window.h
@@ -0,0 +1,63 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*-
+ *
+ * Copyright (C) 2010 Richard Hughes <richard hughsie com>
+ *
+ * Licensed under the GNU General Public License Version 2
+ *
+ * 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 of the License, 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#if !defined (__LIBCOLOR_GLIB_H_INSIDE__) && !defined (LIBCOLOR_GLIB_COMPILATION)
+#error "Only <libcolor-glib.h> can be included directly."
+#endif
+
+#ifndef __GCM_SAMPLE_WINDOW_H
+#define __GCM_SAMPLE_WINDOW_H
+
+#include <glib-object.h>
+#include <gtk/gtk.h>
+
+G_BEGIN_DECLS
+
+#define GCM_TYPE_SAMPLE_WINDOW		(gcm_sample_window_get_type ())
+#define GCM_SAMPLE_WINDOW(o)		(G_TYPE_CHECK_INSTANCE_CAST ((o), GCM_TYPE_SAMPLE_WINDOW, GcmSampleWindow))
+#define GCM_IS_SAMPLE_WINDOW(o)		(G_TYPE_CHECK_INSTANCE_TYPE ((o), GCM_TYPE_SAMPLE_WINDOW))
+
+typedef struct _GcmSampleWindowPrivate	GcmSampleWindowPrivate;
+typedef struct _GcmSampleWindow		GcmSampleWindow;
+typedef struct _GcmSampleWindowClass	GcmSampleWindowClass;
+
+struct _GcmSampleWindow
+{
+	 GtkWindow			 parent;
+	 GcmSampleWindowPrivate		*priv;
+};
+
+struct _GcmSampleWindowClass
+{
+	GtkWindowClass			 parent_class;
+};
+
+GType		 gcm_sample_window_get_type		(void);
+GtkWindow	*gcm_sample_window_new			(void);
+void		 gcm_sample_window_set_color		(GcmSampleWindow	*sample_window,
+							 guint8			 red,
+							 guint8			 green,
+							 guint8			 blue);
+
+G_END_DECLS
+
+#endif /* __GCM_SAMPLE_WINDOW_H */
+
diff --git a/libcolor-glib/gcm-self-test.c b/libcolor-glib/gcm-self-test.c
index 8a7928d..f24e0d0 100644
--- a/libcolor-glib/gcm-self-test.c
+++ b/libcolor-glib/gcm-self-test.c
@@ -39,6 +39,7 @@
 #include "gcm-image.h"
 #include "gcm-usb.h"
 #include "gcm-buffer.h"
+#include "gcm-sample-window.h"
 
 static void
 gcm_test_common_func (void)
@@ -689,11 +690,34 @@ gcm_test_buffer_func (void)
 	g_assert_cmpint (gcm_buffer_read_uint16_le (buffer), ==, 8192);
 }
 
+static gboolean
+gcm_test_sample_window_loop_cb (GMainLoop *loop)
+{
+	g_main_loop_quit (loop);
+	return FALSE;
+}
+
+static void
+gcm_test_sample_window_func (void)
+{
+	GtkWindow *window;
+	GMainLoop *loop;
+	window = gcm_sample_window_new ();
+	g_assert (window != NULL);
+	gcm_sample_window_set_color (GCM_SAMPLE_WINDOW (window), 0xff, 0xff, 0x00);
+	gtk_window_present (window);
+	loop = g_main_loop_new (NULL, FALSE);
+	g_timeout_add_seconds (2, (GSourceFunc) gcm_test_sample_window_loop_cb, loop);
+	g_main_loop_run (loop);
+	g_main_loop_unref (loop);
+	g_object_unref (window);
+}
+
 int
 main (int argc, char **argv)
 {
 	g_type_init ();
-
+	gtk_init (&argc, &argv);
 	g_test_init (&argc, &argv, NULL);
 
 	/* tests go here */
@@ -708,8 +732,9 @@ main (int argc, char **argv)
 	g_test_add_func ("/libcolor-glib/xyz", gcm_test_xyz_func);
 	g_test_add_func ("/libcolor-glib/dmi", gcm_test_dmi_func);
 	g_test_add_func ("/libcolor-glib/profile_store", gcm_test_profile_store_func);
-	g_test_add_func ("/libcolor-glib/usb", gcm_test_usb_func);
 	g_test_add_func ("/libcolor-glib/buffer", gcm_test_buffer_func);
+	g_test_add_func ("/libcolor-glib/sample-window", gcm_test_sample_window_func);
+	g_test_add_func ("/libcolor-glib/usb", gcm_test_usb_func);
 	if (g_test_thorough ()) {
 		g_test_add_func ("/libcolor-glib/brightness", gcm_test_brightness_func);
 		g_test_add_func ("/libcolor-glib/image", gcm_test_image_func);
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