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Member "gtkdatabox-1.0.0/examples/grid.c" (31 Mar 2021, 4654 Bytes) of package /linux/privat/gtkdatabox-1.0.0.tar.gz:
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1 /* $Id: grid.c 4 2008-06-22 09:19:11Z rbock $ */
2 /* GtkDatabox - An extension to the gtk+ library
3 * Copyright (C) 1998 - 2008 Dr. Roland Bock
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public License
7 * as published by the Free Software Foundation; either version 2.1
8 * of the License, or (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU Lesser General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
18 */
19 #include <stdio.h>
20
21 #include <gtk/gtk.h>
22 #include <gtkdatabox.h>
23 #include <gtkdatabox_points.h>
24 #include <gtkdatabox_grid.h>
25 #include <math.h>
26
27 #define POINTS 2000
28
29 /*----------------------------------------------------------------
30 * databox grid
31 *----------------------------------------------------------------*/
32
33 static void
34 create_grid (void)
35 {
36 GtkWidget *window = NULL;
37 GtkWidget *box1;
38 GtkWidget *box2;
39 GtkWidget *close_button;
40 GtkWidget *box;
41 GtkWidget *label;
42 GtkWidget *table;
43 GtkWidget *separator;
44 GtkDataboxGraph *graph;
45 gfloat *X;
46 gfloat *Y;
47 GdkRGBA color;
48 gint i;
49
50 window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
51 gtk_widget_set_size_request (window, 500, 500);
52
53 g_signal_connect (G_OBJECT (window), "destroy",
54 G_CALLBACK (gtk_main_quit), NULL);
55
56 gtk_window_set_title (GTK_WINDOW (window),
57 "GtkDatabox: Double Grid Example");
58 gtk_container_set_border_width (GTK_CONTAINER (window), 0);
59
60 box1 = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
61 gtk_container_add (GTK_CONTAINER (window), box1);
62
63 label =
64 gtk_label_new
65 ("This is an example of two grids\nLove it or hate it.\nI love it...\n\nFor basic understanding see basics :-)");
66 gtk_box_pack_start (GTK_BOX (box1), label, FALSE, FALSE, 0);
67 separator = gtk_separator_new (GTK_ORIENTATION_HORIZONTAL);
68 gtk_box_pack_start (GTK_BOX (box1), separator, FALSE, FALSE, 0);
69
70 /* Create a GtkDatabox widget along with scrollbars and rulers */
71 gtk_databox_create_box_with_scrollbars_and_rulers (&box, &table,
72 TRUE, TRUE, TRUE, TRUE);
73 gtk_box_pack_start (GTK_BOX (box1), table, TRUE, TRUE, 0);
74
75 gtk_databox_set_bg_color (GTK_DATABOX (box), "#9A9A9A");
76
77 X = g_new0 (gfloat, POINTS);
78 Y = g_new0 (gfloat, POINTS);
79
80 for (i = 0; i < POINTS; i++)
81 {
82 X[i] = i;
83 Y[i] = 100. * sin (i * 2 * G_PI / POINTS);
84 }
85 color.red = 0;
86 color.green = 1;
87 color.blue = 0;
88 color.alpha = 1;
89
90 graph = gtk_databox_points_new (POINTS, X, Y, &color, 3);
91 gtk_databox_graph_add (GTK_DATABOX (box), graph);
92
93 Y = g_new0 (gfloat, POINTS);
94
95 for (i = 0; i < POINTS; i++)
96 {
97 Y[i] = 100. * cos (i * 2 * G_PI / POINTS);
98 }
99 color.red = 1;
100 color.green = 0;
101 color.blue = 0;
102 color.alpha = 1;
103
104 graph = gtk_databox_points_new (POINTS, X, Y, &color, 3);
105 gtk_databox_graph_add (GTK_DATABOX (box), graph);
106
107 /* Here we start with the first grid */
108 color.red = 0;
109 color.green = 0;
110 color.blue = 1;
111 color.alpha = 1;
112
113 graph = gtk_databox_grid_new (7, 7, &color, 2);
114 gtk_databox_graph_add (GTK_DATABOX (box), graph);
115
116 color.red = 0.9;
117 color.green = 0;
118 color.blue = 0;
119 color.alpha = 1;
120
121 graph = gtk_databox_grid_new (15, 15, &color, 2);
122 gtk_databox_graph_add (GTK_DATABOX (box), graph);
123 gtk_databox_grid_set_line_style (GTK_DATABOX_GRID(graph), GTK_DATABOX_GRID_DOTTED_LINES);
124
125 gtk_databox_auto_rescale (GTK_DATABOX (box), 0.05);
126
127 separator = gtk_separator_new (GTK_ORIENTATION_HORIZONTAL);
128 gtk_box_pack_start (GTK_BOX (box1), separator, FALSE, TRUE, 0);
129
130 box2 = gtk_box_new (GTK_ORIENTATION_VERTICAL, 10);
131 gtk_container_set_border_width (GTK_CONTAINER (box2), 10);
132 gtk_box_pack_end (GTK_BOX (box1), box2, FALSE, TRUE, 0);
133 close_button = gtk_button_new_with_label ("close");
134 g_signal_connect_swapped (G_OBJECT (close_button), "clicked",
135 G_CALLBACK (gtk_main_quit),
136 G_OBJECT (box));
137 gtk_box_pack_start (GTK_BOX (box2), close_button, TRUE, TRUE, 0);
138 gtk_widget_set_can_default(close_button, TRUE);
139 gtk_widget_grab_default (close_button);
140
141 gtk_widget_show_all (window);
142
143 }
144
145 gint
146 main (gint argc, char *argv[])
147 {
148 gtk_init (&argc, &argv);
149
150 create_grid ();
151 gtk_main ();
152
153 return 0;
154 }