/* $Id: colors.c 4 2008-06-22 09:19:11Z rbock $ */
/* GtkDatabox - An extension to the gtk+ library
* Copyright (C) 1998-2008 Dr. Roland Bock
*
* 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.
*/
#include <stdio.h>
#include <gtk/gtk.h>
#include <gtk/gtkcolorsel.h>
#include <gtk/gtkitemfactory.h>
#include <gtkdatabox.h>
#include <gtkdatabox_points.h>
#include <math.h>
#define POINTS 2000
#define NO_OF_DATASETS 5
typedef struct
{
GtkColorSelectionDialog *selector;
GtkWidget *box;
GtkDataboxGraph *graph;
gint index;
}
col_sel;
static void
get_color_cb (col_sel * sel /*, GtkWidget *widget */ )
{
GdkColor color;
g_return_if_fail (GTK_IS_COLOR_SELECTION_DIALOG (sel->selector));
g_return_if_fail (GTK_IS_DATABOX (sel->box));
gtk_color_selection_get_current_color (GTK_COLOR_SELECTION
(sel->selector->colorsel), &color);
gtk_databox_graph_set_color (sel->graph, &color);
gtk_widget_queue_draw (GTK_WIDGET (sel->box));
}
static void
menu_color_change_cb (col_sel * sel)
{
GtkColorSelectionDialog *selector;
gchar title[20];
GdkColor *color;
sprintf (title, "Choose color #%d", sel->index);
selector =
GTK_COLOR_SELECTION_DIALOG (gtk_color_selection_dialog_new (title));
gtk_widget_destroy (selector->help_button);
sel->selector = selector;
color = gtk_databox_graph_get_color (sel->graph);
gtk_color_selection_set_current_color (GTK_COLOR_SELECTION
(selector->colorsel), color);
g_signal_connect_object (G_OBJECT (selector->cancel_button), "clicked",
G_CALLBACK (gtk_widget_destroy),
G_OBJECT (selector), G_CONNECT_SWAPPED);
g_signal_connect_swapped (G_OBJECT
(selector->ok_button),
"clicked", G_CALLBACK (get_color_cb),
(gpointer) sel);
gtk_widget_show (GTK_WIDGET (selector));
return;
}
static void
create_menu_entry (GtkWidget * menu, int index,
GtkWidget * box, GtkDataboxGraph * graph)
{
GtkWidget *menu_items;
char buf[128];
col_sel *sel = g_new0 (col_sel, 1);
sel->index = index;
sel->box = box;
sel->graph = graph;
sprintf (buf, "Change Color #%d", index);
menu_items = gtk_menu_item_new_with_label (buf);
gtk_menu_shell_append (GTK_MENU_SHELL (menu), menu_items);
g_signal_connect_swapped (G_OBJECT (menu_items), "activate",
G_CALLBACK (menu_color_change_cb),
(gpointer) sel);
gtk_widget_show (menu_items);
}
static void
create_colors (void)
{
static GtkWidget *window = NULL;
GtkWidget *box1 = NULL;
GtkWidget *box2 = NULL;
GtkWidget *close_button = NULL;
GtkWidget *box = NULL;
GtkWidget *separator;
GtkWidget *label;
GtkWidget *menu;
GtkWidget *root_menu;
GtkWidget *menu_bar;
gfloat *X = NULL;
gfloat *Y = NULL;
gint i, j;
GdkColor color;
GtkDataboxGraph *graph;
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_widget_set_size_request (window, 500, 300);
g_signal_connect (G_OBJECT (window), "destroy",
G_CALLBACK (gtk_main_quit), NULL);
gtk_window_set_title (GTK_WINDOW (window), "GtkDatabox: Colors");
gtk_container_set_border_width (GTK_CONTAINER (window), 0);
box1 = gtk_vbox_new (FALSE, 0);
gtk_container_add (GTK_CONTAINER (window), box1);
box = gtk_databox_new ();
gtk_databox_set_enable_selection (GTK_DATABOX (box), FALSE);
gtk_databox_set_enable_zoom (GTK_DATABOX (box), FALSE);
color.red = 0;
color.green = 0;
color.blue = 0;
gtk_widget_modify_bg (box, GTK_STATE_NORMAL, &color);
menu = gtk_menu_new ();
root_menu = gtk_menu_item_new_with_label ("Color Menu");
gtk_menu_item_set_submenu (GTK_MENU_ITEM (root_menu), menu);
menu_bar = gtk_menu_bar_new ();
gtk_menu_shell_append (GTK_MENU_SHELL (menu_bar), root_menu);
gtk_box_pack_start (GTK_BOX (box1), menu_bar, FALSE, TRUE, 0);
label =
gtk_label_new
("You can change the colors of the shown datasets via the menu.\n\n");
gtk_box_pack_start (GTK_BOX (box1), label, FALSE, FALSE, 0);
separator = gtk_hseparator_new ();
gtk_box_pack_start (GTK_BOX (box1), separator, FALSE, FALSE, 0);
g_signal_connect (G_OBJECT (box), "destroy",
G_CALLBACK (gtk_main_quit), NULL);
for (i = 0; i < NO_OF_DATASETS; i++)
{
if (!i)
X = g_new0 (gfloat, POINTS);
Y = g_new0 (gfloat, POINTS);
for (j = 0; j < POINTS; j++)
{
X[j] = j;
Y[j] = 100. * sin ((i + 1) * 2 * j * G_PI / POINTS);
}
color.red = 65535 * ((i + 1) % 2);
color.green = (65535 / 2) * ((i + 1) % 3);
color.blue = (65535 / 3) * ((i + 1) % 4);
graph = gtk_databox_points_new (POINTS, X, Y, &color, 1);
gtk_databox_graph_add (GTK_DATABOX (box), graph);
create_menu_entry (menu, i, box, graph);
}
gtk_databox_auto_rescale (GTK_DATABOX (box), 0.05);
gtk_box_pack_start (GTK_BOX (box1), box, TRUE, TRUE, 0);
separator = gtk_hseparator_new ();
gtk_box_pack_start (GTK_BOX (box1), separator, FALSE, TRUE, 0);
box2 = gtk_vbox_new (FALSE, 10);
gtk_container_set_border_width (GTK_CONTAINER (box2), 10);
gtk_box_pack_end (GTK_BOX (box1), box2, FALSE, TRUE, 0);
close_button = gtk_button_new_with_label ("close");
g_signal_connect (G_OBJECT (close_button), "clicked",
G_CALLBACK (gtk_main_quit), (gpointer) NULL);
gtk_box_pack_start (GTK_BOX (box2), close_button, TRUE, TRUE, 0);
gtk_widget_set_can_default(close_button, TRUE);
gtk_widget_grab_default (close_button);
gtk_widget_show_all (window);
}
gint
main (gint argc, char *argv[])
{
gtk_init (&argc, &argv);
create_colors ();
gtk_main ();
return 0;
}
