Minor improvements to gdkrgb, added testrgb to the gtk directory.

1 files changed, 237 insertions, 0 deletions

diff --git a/tests/testrgb.c b/tests/testrgb.c
new file mode 100644
index 000000000..b125bf764
--- /dev/null
+++ b/tests/testrgb.c
@@ -0,0 +1,237 @@
+/* GTK - The GIMP Toolkit
+ * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+/* Note: these #includes differ slightly from the testrgb.c file included
+   in the GdkRgb release. */
+
+/* For gettimeofday */
+#include <sys/time.h>
+#include <unistd.h>
+
+#include "gtk.h"
+
+static void
+quit_func (GtkWidget *widget, gpointer dummy)
+{
+  gtk_main_quit ();
+}
+
+#define WIDTH 320
+#define HEIGHT 200
+
+gdouble
+get_time (void)
+{
+  struct timeval tv;
+  struct timezone tz;
+
+  gettimeofday (&tv, &tz);
+
+  return tv.tv_sec + 1e-6 * tv.tv_usec;
+}
+
+#define NUM_ITERS 100
+
+static void
+testrgb_rgb_test (GtkWidget *drawing_area)
+{
+  guchar buf[WIDTH * HEIGHT * 6];
+  gint i, j;
+  gint offset;
+  guchar val;
+  gdouble start_time, total_time;
+  gint x, y;
+  gboolean dither;
+  int dith_max;
+
+  val = 0;
+  for (j = 0; j < WIDTH * HEIGHT * 6; j++)
+    {
+      val = (val + ((val + (rand () & 0xff)) >> 1)) >> 1;
+      buf[j] = val;
+    }
+
+  /* Let's warm up the cache, and also wait for the window manager
+     to settle. */
+  for (i = 0; i < NUM_ITERS; i++)
+    {
+      offset = (rand () % (WIDTH * HEIGHT * 3)) & -4;
+      gdk_draw_rgb_image (drawing_area->window,
+			  drawing_area->style->white_gc,
+			  0, 0, WIDTH, HEIGHT,
+			  GDK_RGB_DITHER_NONE,
+			  buf + offset, WIDTH * 3);
+    }
+
+  if (gdk_rgb_ditherable ())
+    dith_max = 2;
+  else
+    dith_max = 1;
+
+  for (dither = 0; dither < dith_max; dither++)
+    {
+      start_time = get_time ();
+      for (i = 0; i < NUM_ITERS; i++)
+	{
+	  offset = (rand () % (WIDTH * HEIGHT * 3)) & -4;
+	  gdk_draw_rgb_image (drawing_area->window,
+			      drawing_area->style->white_gc,
+			      0, 0, WIDTH, HEIGHT,
+			      dither ? GDK_RGB_DITHER_MAX :
+			      GDK_RGB_DITHER_NONE,
+			      buf + offset, WIDTH * 3);
+	}
+      total_time = get_time () - start_time;
+      g_print ("Color test%s time elapsed: %.2fs, %.1f fps, %.2f megapixels/s\n",
+	       dither ? " (dithered)" : "",
+	       total_time,
+	       NUM_ITERS / total_time,
+	       NUM_ITERS * (WIDTH * HEIGHT * 1e-6) / total_time);
+    }
+
+  for (dither = 0; dither < dith_max; dither++)
+    {
+      start_time = get_time ();
+      for (i = 0; i < NUM_ITERS; i++)
+	{
+	  offset = (rand () % (WIDTH * HEIGHT)) & -4;
+	  gdk_draw_gray_image (drawing_area->window,
+			       drawing_area->style->white_gc,
+			       0, 0, WIDTH, HEIGHT,
+			       dither ? GDK_RGB_DITHER_MAX :
+			       GDK_RGB_DITHER_NONE,
+			       buf + offset, WIDTH);
+	}
+      total_time = get_time () - start_time;
+      g_print ("Grayscale test%s time elapsed: %.2fs, %.1f fps, %.2f megapixels/s\n",
+	       dither ? " (dithered)" : "",
+	       total_time,
+	       NUM_ITERS / total_time,
+	       NUM_ITERS * (WIDTH * HEIGHT * 1e-6) / total_time);
+    }
+
+#if 1
+  for (x = 0; x < WIDTH; x++)
+    {
+      int cindex;
+
+      cindex = (x * 8) / WIDTH;
+      buf[x * 3] = cindex & 4 ? 0 : 255;
+      buf[x * 3 + 1] = cindex & 2 ? 0 : 255;
+      buf[x * 3 + 2] = cindex & 1 ? 0 : 255;
+    }
+  for (y = 1; y < (HEIGHT * 3) / 4; y++)
+    {
+      memcpy (buf + y * WIDTH * 3, buf, WIDTH * 3);
+    }
+  for (; y < (HEIGHT * 13) / 16; y++)
+    {
+      for (x = 0; x < WIDTH; x++)
+	{
+	  guchar gray;
+
+	  gray = (x * 255) / (WIDTH - 1);
+	  buf[y * WIDTH * 3 + x * 3] = gray;
+	  buf[y * WIDTH * 3 + x * 3 + 1] = gray;
+	  buf[y * WIDTH * 3 + x * 3 + 2] = gray;
+	}
+    }
+
+  for (; y < HEIGHT; y++)
+    {
+      for (x = 0; x < WIDTH; x++)
+	{
+	  int cindex;
+	  guchar gray;
+
+	  cindex = (x * 16) / WIDTH;
+	  gray = cindex < 3 ? 0 :
+	    cindex < 5 ? 255 :
+	    cindex < 7 ? 128 :
+	    0;
+	  buf[y * WIDTH * 3 + x * 3] = gray;
+	  buf[y * WIDTH * 3 + x * 3 + 1] = gray;
+	  buf[y * WIDTH * 3 + x * 3 + 2] = gray;
+	}
+    }
+  gdk_draw_rgb_image (drawing_area->window,
+		      drawing_area->style->white_gc,
+		      0, 0, WIDTH, HEIGHT, GDK_RGB_DITHER_MAX,
+		      buf, WIDTH * 3);
+#endif
+}
+
+void
+new_testrgb_window (void)
+{
+  GtkWidget *window;
+  GtkWidget *vbox;
+  GtkWidget *button;
+  GtkWidget *drawing_area;
+
+  window = gtk_widget_new (gtk_window_get_type (),
+			   "GtkObject::user_data", NULL,
+			   "GtkWindow::type", GTK_WINDOW_TOPLEVEL,
+			   "GtkWindow::title", "testrgb",
+			   "GtkWindow::allow_shrink", FALSE,
+			   NULL);
+  gtk_signal_connect (GTK_OBJECT (window), "destroy",
+		      (GtkSignalFunc) quit_func, NULL);
+
+  vbox = gtk_vbox_new (FALSE, 0);
+
+  drawing_area = gtk_drawing_area_new ();
+
+  gtk_widget_set_usize (drawing_area, WIDTH, HEIGHT);
+  gtk_box_pack_start (GTK_BOX (vbox), drawing_area, FALSE, FALSE, 0);
+  gtk_widget_show (drawing_area);
+
+  button = gtk_button_new_with_label ("Quit");
+  gtk_box_pack_start (GTK_BOX (vbox), button, FALSE, FALSE, 0);
+  gtk_signal_connect_object (GTK_OBJECT (button), "clicked",
+			     (GtkSignalFunc) gtk_widget_destroy,
+			     GTK_OBJECT (window));
+
+  gtk_widget_show (button);
+
+  gtk_container_add (GTK_CONTAINER (window), vbox);
+  gtk_widget_show (vbox);
+
+  gtk_widget_show (window);
+
+  testrgb_rgb_test (drawing_area);
+}
+
+int
+main (int argc, char **argv)
+{
+  gtk_init (&argc, &argv);
+
+  gdk_rgb_set_verbose (TRUE);
+
+  gdk_rgb_init ();
+
+  gtk_widget_set_default_colormap (gdk_rgb_get_cmap ());
+  gtk_widget_set_default_visual (gdk_rgb_get_visual ());
+  new_testrgb_window ();
+
+  gtk_main ();
+
+  return 0;
+}