From 6f0f7d1b40a8fa8d46a2d6f4317600001cdbbb18 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 7 Apr 2024 19:57:27 +0200
Subject: Adding upstream version 43.5.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 lib/tools/profile-key-colors.c | 175 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 175 insertions(+)
 create mode 100644 lib/tools/profile-key-colors.c

(limited to 'lib/tools/profile-key-colors.c')

diff --git a/lib/tools/profile-key-colors.c b/lib/tools/profile-key-colors.c
new file mode 100644
index 0000000..44df6a4
--- /dev/null
+++ b/lib/tools/profile-key-colors.c
@@ -0,0 +1,175 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*-
+ * vi:set noexpandtab tabstop=8 shiftwidth=8:
+ *
+ * Copyright (C) 2021 Endless OS Foundation LLC
+ *
+ * Authors:
+ *  - Philip Withnall <pwithnall@endlessos.org>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <glib.h>
+#include <gdk-pixbuf/gdk-pixbuf.h>
+#include <gdk/gdk.h>
+#include <locale.h>
+#include <math.h>
+
+#include "gs-key-colors.h"
+
+/* Test program which can be used to check the output and performance of the
+ * gs_calculate_key_colors() function. It is linked against libgnomesoftware, so
+ * will use the function implementation from there. It outputs a HTML page which
+ * lists each icon from the flathub appstream data in your home directory, along
+ * with its extracted key colors and how long extraction took. */
+
+static void
+print_colours (GString *html_output,
+               GArray  *colours)
+{
+	g_string_append_printf (html_output, "<table class='colour-swatch'><tr>");
+	for (guint i = 0; i < colours->len; i++) {
+		GdkRGBA *rgba = &g_array_index (colours, GdkRGBA, i);
+
+		g_string_append_printf (html_output,
+					"<td style='background-color: rgb(%u, %u, %u)'></td>",
+					(guint) (rgba->red * 255),
+					(guint) (rgba->green * 255),
+					(guint) (rgba->blue * 255));
+
+		if (i % 3 == 2)
+			g_string_append (html_output, "</tr><tr>");
+	}
+	g_string_append_printf (html_output, "</tr></table>");
+}
+
+static void
+print_summary_statistics (GString *html_output,
+                          GArray  *durations  /* (element-type gint64) */)
+{
+	gint64 sum = 0, min = G_MAXINT64, max = G_MININT64;
+	guint n_measurements = durations->len;
+	gint64 mean, stddev;
+	gint64 sum_of_square_deviations = 0;
+
+	for (guint i = 0; i < durations->len; i++) {
+		gint64 duration = g_array_index (durations, gint64, i);
+		sum += duration;
+		min = MIN (min, duration);
+		max = MAX (max, duration);
+	}
+
+	mean = sum / n_measurements;
+
+	for (guint i = 0; i < durations->len; i++) {
+		gint64 duration = g_array_index (durations, gint64, i);
+		gint64 diff = duration - mean;
+		sum_of_square_deviations += diff * diff;
+	}
+
+	stddev = sqrt (sum_of_square_deviations / n_measurements);
+
+	g_string_append_printf (html_output,
+				"[%" G_GINT64_FORMAT ", %" G_GINT64_FORMAT "]μs, mean %" G_GINT64_FORMAT "±%" G_GINT64_FORMAT "μs, n = %u",
+				min, max, mean, stddev, n_measurements);
+}
+
+int
+main (void)
+{
+	const gchar *icons_subdir = ".local/share/flatpak/appstream/flathub/x86_64/active/icons/128x128";
+	g_autofree gchar *icons_dir = g_build_filename (g_get_home_dir (), icons_subdir, NULL);
+	g_autoptr(GDir) dir = NULL;
+	const gchar *entry;
+	g_autoptr(GPtrArray) filenames = g_ptr_array_new_with_free_func (g_free);
+	g_autoptr(GPtrArray) pixbufs = g_ptr_array_new_with_free_func (g_object_unref);
+	g_autoptr(GString) html_output = g_string_new ("");
+	g_autoptr(GArray) durations = g_array_new (FALSE, FALSE, sizeof (gint64));
+
+	setlocale (LC_ALL, "");
+
+	/* Load pixbufs from the icons directory. */
+	dir = g_dir_open (icons_dir, 0, NULL);
+	if (dir == NULL)
+		return 1;
+
+	while ((entry = g_dir_read_name (dir)) != NULL) {
+		g_autofree gchar *filename = g_build_filename (icons_dir, entry, NULL);
+		g_autoptr(GdkPixbuf) pixbuf = gdk_pixbuf_new_from_file (filename, NULL);
+
+		if (pixbuf == NULL)
+			continue;
+
+		g_ptr_array_add (filenames, g_steal_pointer (&filename));
+		g_ptr_array_add (pixbufs, g_steal_pointer (&pixbuf));
+	}
+
+	if (!pixbufs->len)
+		return 2;
+
+	/* Set up an output page */
+	g_string_append (html_output,
+			 "<!DOCTYPE html>\n"
+			 "<html>\n"
+			 "  <head>\n"
+			 "    <meta charset='UTF-8'>\n"
+			 "    <style>\n"
+			 "      #main-table, #main-table th, #main-table td { border: 1px solid black; border-collapse: collapse }\n"
+			 "      #main-table th, #main-table td { padding: 4px }\n"
+			 "      td.number { text-align: right }\n"
+			 "      table.colour-swatch td { width: 30px; height: 30px }\n"
+			 "      .faster { background-color: rgb(190, 236, 57) }\n"
+			 "      .slower { background-color: red }\n"
+			 "    </style>\n"
+			 "  </head>\n"
+			 "  <body>\n"
+			 "    <table id='main-table'>\n"
+			 "      <thead>\n"
+			 "        <tr>\n"
+			 "          <td>Filename</td>\n"
+			 "          <td>Icon</td>\n"
+			 "          <td>Code duration (μs)</td>\n"
+			 "          <td>Code colours</td>\n"
+			 "        </tr>\n"
+			 "      </thead>\n");
+
+	/* For each pixbuf, run both algorithms. */
+	for (guint i = 0; i < pixbufs->len; i++) {
+		GdkPixbuf *pixbuf = pixbufs->pdata[i];
+		const gchar *filename = filenames->pdata[i];
+		g_autofree gchar *basename = g_path_get_basename (filename);
+		g_autoptr(GArray) colours = NULL;
+		gint64 start_time, duration;
+
+		g_message ("Processing %u of %u, %s", i + 1, pixbufs->len, filename);
+
+		start_time = g_get_real_time ();
+		colours = gs_calculate_key_colors (pixbuf);
+		duration = g_get_real_time () - start_time;
+
+		g_string_append_printf (html_output,
+					"<tr>\n"
+					"<th>%s</th>\n"
+					"<td><img src='file:%s'></td>\n"
+					"<td class='number'>%" G_GINT64_FORMAT "</td>\n"
+					"<td>",
+					basename, filename, duration);
+		print_colours (html_output, colours);
+		g_string_append (html_output,
+				 "</td>\n"
+				 "</tr>\n");
+
+		g_array_append_val (durations, duration);
+	}
+
+	/* Summary statistics for the timings. */
+	g_string_append (html_output, "<tfoot><tr><td></td><td></td><td>");
+	print_summary_statistics (html_output, durations);
+	g_string_append (html_output, "</td><td></td></tr></tfoot>");
+
+	g_string_append (html_output, "</table></body></html>");
+
+	g_print ("%s\n", html_output->str);
+
+	return 0;
+}
-- 
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