verbose-log on startup whether we were compiled with various extensions

2002-05-30  Havoc Pennington  <hp@redhat.com>

	* src/main.c (main): verbose-log on startup whether we were
	compiled with various extensions

	* src/display.c (meta_display_queue_retheme_all_windows): reapply
	shape mask when changing themes, sucks to do it here though, makes
	theme changing slower. Needs fixing.

	* src/theme-parser.c (parse_toplevel_element): parse rounded
	corner options to frame_geometry

	* src/frames.c (meta_frames_apply_shapes): apply rounded corners
	if requested by the theme

	* configure.in (HAVE_SHAPE): check for shape extension

src/tools/Makefile.am

@@ -15,9 +15,12 @@ metacity_message_SOURCES= 				\
 metacity_window_demo_SOURCES=				\
 	metacity-window-demo.c
 
-metacity_mag_SOURCES=				\
+metacity_mag_SOURCES=					\
 	metacity-mag.c
 
+metacity_grayscale_SOURCES=				\
+	metacity-grayscale.c
+
 metacity_properties_SOURCES=				\
 	metacity-properties.c
 
@@ -35,13 +38,14 @@ desktop_DATA=$(Desktop_in_files:.desktop.in=.desktop)
 
 bin_PROGRAMS=metacity-message metacity-window-demo metacity-properties
 
-## cheesy hack I use, doesn't really have any business existing. ;-)
-noinst_PROGRAMS=metacity-mag
+## cheesy hacks I use, don't really have any business existing. ;-)
+noinst_PROGRAMS=metacity-mag metacity-grayscale
 
 metacity_message_LDADD= @METACITY_MESSAGE_LIBS@
 metacity_window_demo_LDADD= @METACITY_WINDOW_DEMO_LIBS@
 metacity_properties_LDADD= @METACITY_PROPS_LIBS@
 metacity_mag_LDADD= @METACITY_WINDOW_DEMO_LIBS@
+metacity_grayscale_LDADD = @METACITY_WINDOW_DEMO_LIBS@
 
 EXTRA_DIST=$(icon_DATA) $(ui_DATA) $(propicon_DATA) $(Desktop_in_files)
 

src/tools/metacity-grayscale.c

@@ -0,0 +1,109 @@
+/* Hack for grayscaling an image */
+
+/* 
+ * Copyright (C) 2002 Red Hat Inc.
+ * 
+ * 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., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ */
+
+#include <gdk-pixbuf/gdk-pixbuf.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <math.h>
+
+#define INTENSITY(r, g, b) ((r) * 0.30 + (g) * 0.59 + (b) * 0.11)
+
+static GdkPixbuf*
+grayscale_pixbuf (GdkPixbuf *pixbuf)
+{
+  GdkPixbuf *gray;
+  guchar *pixels;
+  int rowstride;
+  int pixstride;
+  int row;
+  int n_rows;
+  int width;
+  
+  gray = gdk_pixbuf_copy (pixbuf);
+  rowstride = gdk_pixbuf_get_rowstride (gray);
+  pixstride = gdk_pixbuf_get_has_alpha (gray) ? 4 : 3;
+  
+  pixels = gdk_pixbuf_get_pixels (gray);
+  n_rows = gdk_pixbuf_get_height (gray);
+  width = gdk_pixbuf_get_width (gray);
+  
+  row = 0;
+  while (row < n_rows)
+    {
+      guchar *p = pixels + row * rowstride;
+      guchar *end = p + (pixstride * width);
+
+      while (p != end)
+        {
+          double v = INTENSITY (p[0], p[1], p[2]);
+
+          p[0] = (guchar) v;
+          p[1] = (guchar) v;
+          p[2] = (guchar) v;
+          
+          p += pixstride;
+        }
+      
+      ++row;
+    }
+  
+  return gray;
+}
+
+int
+main (int argc, char **argv)
+{
+  GdkPixbuf *pixbuf;
+  GdkPixbuf *gray;
+  GError *err;
+  
+  if (argc != 2)
+    {
+      g_printerr ("specify a single image on the command line\n");
+      return 1;
+    }
+
+  g_type_init ();
+  
+  err = NULL;
+  pixbuf = gdk_pixbuf_new_from_file (argv[1], &err);
+  if (err != NULL)
+    {
+      g_printerr ("failed to load image: %s\n", err->message);
+      g_error_free (err);
+      return 1;
+    }
+
+  gray = grayscale_pixbuf (pixbuf);
+  
+  err = NULL;
+  gdk_pixbuf_save (gray, "grayscale.png", "png", &err, NULL);
+  if (err != NULL)
+    {
+      g_printerr ("failed to save image: %s\n", err->message);
+      g_error_free (err);
+      return 1;
+    }
+
+  g_print ("wrote grayscale.png\n");
+  
+  return 0;
+}