gtkdatabox-1.0.0.tar.gz: .../enable_disable.c

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Member "gtkdatabox-1.0.0/examples/enable_disable.c" (31 Mar 2021, 5779 Bytes) of package /linux/privat/gtkdatabox-1.0.0.tar.gz:

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0.9.3.1_vs_1.0.0.

1 /* $Id: enable_disable.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_bars.h> 24 #include <math.h> 25 26 #define POINTS 50 27 28 /*---------------------------------------------------------------- 29 * databox show_hide 30 *----------------------------------------------------------------*/ 31 32 typedef void (*set_function) (GtkDatabox * box, gboolean enable); 33 typedef gboolean (*get_function) (GtkDatabox * box); 34 35 typedef struct 36 { 37 char *title; 38 set_function set; 39 get_function get; 40 GtkDatabox *box; 41 GtkEntry *entry; 42 } 43 EnableSet; 44 45 EnableSet enableSets[] = { 46 {"Selection Enabled", 47 gtk_databox_set_enable_selection, 48 gtk_databox_get_enable_selection, 49 NULL, 50 NULL}, 51 {"Zoom Enabled", 52 gtk_databox_set_enable_zoom, 53 gtk_databox_get_enable_zoom, 54 NULL, 55 NULL}, 56 }; 57 58 gint noEnableSets = sizeof (enableSets) / sizeof (EnableSet); 59 60 static gboolean 61 update_enable (EnableSet * enableSet) 62 { 63 gboolean status = !(enableSet->get (enableSet->box)); 64 65 enableSet->set (enableSet->box, status); 66 gtk_entry_set_text (GTK_ENTRY (enableSet->entry), 67 (status) ? "TRUE" : "FALSE"); 68 69 return FALSE; 70 } 71 72 static void 73 create_show_hide (void) 74 { 75 GtkWidget *window = NULL; 76 GtkWidget *box1; 77 GtkWidget *box2; 78 GtkWidget *close_button; 79 GtkWidget *enable_box; 80 GtkWidget *box; 81 GtkWidget *table; 82 GtkWidget *label; 83 GtkWidget *separator; 84 GtkDataboxGraph *graph; 85 gfloat *X; 86 gfloat *Y; 87 GdkRGBA color; 88 gint i; 89 90 window = gtk_window_new (GTK_WINDOW_TOPLEVEL); 91 gtk_widget_set_size_request (window, 600, 600); 92 93 g_signal_connect (G_OBJECT (window), "destroy", 94 G_CALLBACK (gtk_main_quit), NULL); 95 96 gtk_window_set_title (GTK_WINDOW (window), 97 "GtkDatabox: Enable/Disable Features"); 98 gtk_container_set_border_width (GTK_CONTAINER (window), 0); 99 100 box1 = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0); 101 gtk_container_add (GTK_CONTAINER (window), box1); 102 103 label = 104 gtk_label_new 105 ("Click on the buttons to enable/disable features.\n\nFor basic understanding: See basics :-)\n\n"); 106 gtk_box_pack_start (GTK_BOX (box1), label, FALSE, FALSE, 0); 107 separator = gtk_separator_new (GTK_ORIENTATION_HORIZONTAL); 108 gtk_box_pack_start (GTK_BOX (box1), separator, FALSE, FALSE, 0); 109 110 enable_box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0); 111 gtk_box_pack_start (GTK_BOX (box1), enable_box, FALSE, FALSE, 0); 112 separator = gtk_separator_new (GTK_ORIENTATION_HORIZONTAL); 113 gtk_box_pack_start (GTK_BOX (box1), separator, FALSE, FALSE, 0); 114 115 /* Create a GtkDatabox widget along with scrollbars and rulers */ 116 gtk_databox_create_box_with_scrollbars_and_rulers (&box, &table, 117 TRUE, TRUE, TRUE, TRUE); 118 119 gtk_box_pack_start (GTK_BOX (box1), table, TRUE, TRUE, 0); 120 121 X = g_new0 (gfloat, POINTS); 122 Y = g_new0 (gfloat, POINTS); 123 124 for (i = 0; i < POINTS; i++) 125 { 126 X[i] = i; 127 Y[i] = 100. * sin (i * 2 * G_PI / POINTS); 128 } 129 color.red = 0; 130 color.green = 0; 131 color.blue = 1; 132 color.alpha = 1; 133 134 graph = gtk_databox_bars_new (POINTS, X, Y, &color, 1); 135 gtk_databox_graph_add (GTK_DATABOX (box), graph); 136 137 gtk_databox_auto_rescale (GTK_DATABOX (box), 0.05); 138 139 separator = gtk_separator_new (GTK_ORIENTATION_HORIZONTAL); 140 gtk_box_pack_start (GTK_BOX (box1), separator, FALSE, TRUE, 0); 141 142 box2 = gtk_box_new (GTK_ORIENTATION_VERTICAL, 10); 143 gtk_container_set_border_width (GTK_CONTAINER (box2), 10); 144 gtk_box_pack_end (GTK_BOX (box1), box2, FALSE, TRUE, 0); 145 close_button = gtk_button_new_with_label ("close"); 146 g_signal_connect_swapped (G_OBJECT (close_button), "clicked", 147 G_CALLBACK (gtk_main_quit), G_OBJECT (box)); 148 gtk_box_pack_start (GTK_BOX (box2), close_button, TRUE, TRUE, 0); 149 gtk_widget_set_can_default(close_button, TRUE); 150 for (i = 0; i < noEnableSets; ++i) 151 { 152 GtkWidget *vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 10); 153 GtkWidget *label = gtk_label_new (enableSets[i].title); 154 GtkWidget *entry = gtk_entry_new (); 155 GtkWidget *button = gtk_button_new_with_label ("Change"); 156 157 gtk_box_pack_start (GTK_BOX (enable_box), vbox, TRUE, TRUE, 0); 158 gtk_box_pack_start (GTK_BOX (vbox), label, TRUE, TRUE, 0); 159 gtk_box_pack_start (GTK_BOX (vbox), entry, TRUE, TRUE, 0); 160 gtk_box_pack_start (GTK_BOX (vbox), button, TRUE, TRUE, 0); 161 162 gtk_editable_set_editable (GTK_EDITABLE (entry), FALSE); 163 g_signal_connect_swapped (button, "clicked", 164 G_CALLBACK (update_enable), 165 (gpointer) & (enableSets[i])); 166 enableSets[i].box = GTK_DATABOX (box); 167 enableSets[i].entry = GTK_ENTRY (entry); 168 169 update_enable (&enableSets[i]); 170 update_enable (&enableSets[i]); 171 172 } 173 174 gtk_widget_grab_default (close_button); 175 gtk_widget_show_all (window); 176 177 } 178 179 gint 180 main (gint argc, char *argv[]) 181 { 182 gtk_init (&argc, &argv); 183 184 create_show_hide (); 185 gtk_main (); 186 187 return 0; 188 }