/* $Id: logarithmic.c 4 2008-06-22 09:19:11Z rbock $ */ /* GtkDatabox - An extension to the gtk+ library * Copyright (C) 1998 - 2008 Dr. Roland Bock * * This program 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 2.1 * 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 Lesser 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 <stdio.h> #include <gtk/gtk.h> #include <gtkdatabox.h> #include <gtkdatabox_points.h> #include <gtkdatabox_ruler.h> #include <math.h> #define POINTS 100000 /* #define STEPS 50 #define BARS 25 #define MARKER 10 */ #define NO_BOXES 4 /*---------------------------------------------------------------- * databox logarithmic *----------------------------------------------------------------*/ static void create_logarithmic (void) { GtkWidget *window = NULL; GtkWidget *hbox; GtkWidget *vbox; GtkWidget *close_button; GtkWidget *box[NO_BOXES]; GtkWidget *label; GtkWidget *separator; GtkWidget *table; GtkDataboxGraph *graph; gfloat min_x, max_x; gfloat min_y, max_y; gfloat *X; gfloat *Y; GdkColor color; gint i; window = gtk_window_new (GTK_WINDOW_TOPLEVEL); gtk_widget_set_size_request (window, 1000, 500); g_signal_connect (GTK_OBJECT (window), "destroy", G_CALLBACK (gtk_main_quit), NULL); gtk_window_set_title (GTK_WINDOW (window), "GtkDatabox: Logarithmic Plots"); gtk_container_set_border_width (GTK_CONTAINER (window), 0); vbox = gtk_vbox_new (FALSE, 0); gtk_container_add (GTK_CONTAINER (window), vbox); label = gtk_label_new ("The following types of curves are shown (with some adjustments to make them fit nicely into the window):\n Green: sin^2, Red: exp, Magenta: 1/x, Yellow: x^2\n(100K Points per each curve in each graph)\n"); gtk_box_pack_start (GTK_BOX (vbox), label, FALSE, FALSE, 0); separator = gtk_hseparator_new (); gtk_box_pack_start (GTK_BOX (vbox), separator, FALSE, FALSE, 0); hbox = gtk_hbox_new (FALSE, 0); gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0); label = gtk_label_new ("Linear Plot:"); gtk_box_pack_start (GTK_BOX (hbox), label, TRUE, TRUE, 0); label = gtk_label_new ("Logarithmic Plot:"); gtk_box_pack_start (GTK_BOX (hbox), label, TRUE, TRUE, 0); label = gtk_label_new ("Double Logarithmic Plot:"); gtk_box_pack_start (GTK_BOX (hbox), label, TRUE, TRUE, 0); label = gtk_label_new ("Log base 2 Plot:"); gtk_box_pack_start (GTK_BOX (hbox), label, TRUE, TRUE, 0); separator = gtk_hseparator_new (); gtk_box_pack_start (GTK_BOX (vbox), separator, FALSE, FALSE, 0); /* Create the databoxes */ hbox = gtk_hbox_new (FALSE, 0); gtk_box_pack_start (GTK_BOX (vbox), hbox, TRUE, TRUE, 0); for (i = 0; i < NO_BOXES; ++i) { gtk_databox_create_box_with_scrollbars_and_rulers (&box[i], &table, TRUE, TRUE, TRUE, TRUE); gtk_box_pack_start (GTK_BOX (hbox), table, TRUE, TRUE, 0); } /* set the background */ color.red = 16383; color.green = 16383; color.blue = 16383; for (i = 0; i < NO_BOXES; ++i) gtk_widget_modify_bg (box[i], GTK_STATE_NORMAL, &color); /* add a sinus^2 */ X = g_new0 (gfloat, POINTS); Y = g_new0 (gfloat, POINTS); for (i = 0; i < POINTS; i++) { X[i] = i / 100.; Y[i] = 0.01 + 1000 * pow (sin (i * G_PI / POINTS), 2); } color.red = 0; color.green = 65535; color.blue = 0; graph = gtk_databox_points_new (POINTS, X, Y, &color, 1); for (i = 0; i < NO_BOXES; ++i) gtk_databox_graph_add (GTK_DATABOX (box[i]), graph); /* add an exp function */ X = g_new0 (gfloat, POINTS); Y = g_new0 (gfloat, POINTS); for (i = 0; i < POINTS; i++) { X[i] = i / 100.; Y[i] = exp (log (1000) * i / ((gfloat) POINTS)); } color.red = 65535; color.green = 0; color.blue = 0; graph = gtk_databox_points_new (POINTS, X, Y, &color, 1); for (i = 0; i < NO_BOXES; ++i) gtk_databox_graph_add (GTK_DATABOX (box[i]), graph); /* add an 1/x function */ X = g_new0 (gfloat, POINTS); Y = g_new0 (gfloat, POINTS); for (i = 0; i < POINTS; i++) { X[i] = i / 100.; Y[i] = 1000. / (100. * (gfloat) i / POINTS); } color.red = 65535; color.green = 0; color.blue = 65535; graph = gtk_databox_points_new (POINTS, X, Y, &color, 1); for (i = 0; i < NO_BOXES; ++i) gtk_databox_graph_add (GTK_DATABOX (box[i]), graph); /* add an x^2 function */ X = g_new0 (gfloat, POINTS); Y = g_new0 (gfloat, POINTS); for (i = 0; i < POINTS; i++) { X[i] = i / 100.; Y[i] = 1000. * (gfloat) i / POINTS * (gfloat) i / POINTS; } color.red = 65535; color.green = 65535; color.blue = 0; graph = gtk_databox_points_new (POINTS, X, Y, &color, 1); for (i = 0; i < NO_BOXES; ++i) gtk_databox_graph_add (GTK_DATABOX (box[i]), graph); /* set the extrema */ min_x = 0.01; max_x = 1000.; min_y = 1000.; max_y = 0.01; for (i = 0; i < NO_BOXES-1; ++i) gtk_databox_set_total_limits (GTK_DATABOX (box[i]), min_x, max_x, min_y, max_y); gtk_databox_set_total_limits (GTK_DATABOX (box[i]), 8, max_x, min_y, max_y); gtk_databox_set_scale_type_y (GTK_DATABOX (box[1]), GTK_DATABOX_SCALE_LOG); gtk_databox_set_scale_type_x (GTK_DATABOX (box[2]), GTK_DATABOX_SCALE_LOG); gtk_databox_set_scale_type_y (GTK_DATABOX (box[2]), GTK_DATABOX_SCALE_LOG); gtk_databox_set_scale_type_x (GTK_DATABOX (box[3]), GTK_DATABOX_SCALE_LOG2); separator = gtk_hseparator_new (); gtk_box_pack_start (GTK_BOX (vbox), separator, FALSE, TRUE, 0); close_button = gtk_button_new_with_label ("close"); g_signal_connect (GTK_OBJECT (close_button), "clicked", G_CALLBACK (gtk_main_quit), NULL); gtk_box_pack_start (GTK_BOX (vbox), close_button, FALSE, FALSE, 0); gtk_widget_set_can_default(close_button, TRUE); gtk_widget_grab_default (close_button); gtk_widget_grab_focus (close_button); gtk_widget_show_all (window); gdk_window_set_cursor (box[0]->window, gdk_cursor_new (GDK_CROSS)); } gint main (gint argc, char *argv[]) { gtk_init (&argc, &argv); create_logarithmic (); gtk_main (); return 0; }