1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
|
/* testframe.c
* Copyright (C) 2007 Xan López <xan@gnome.org>
*
* 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 <gtk/gtk.h>
#include <math.h>
static void
spin_ythickness_cb (GtkSpinButton *spin, gpointer user_data)
{
GtkWidget *frame = user_data;
GtkRcStyle *rcstyle;
rcstyle = gtk_rc_style_new ();
rcstyle->xthickness = GTK_WIDGET (frame)->style->xthickness;
rcstyle->ythickness = gtk_spin_button_get_value (spin);
gtk_widget_modify_style (frame, rcstyle);
g_object_unref (rcstyle);
}
static void
spin_xthickness_cb (GtkSpinButton *spin, gpointer user_data)
{
GtkWidget *frame = user_data;
GtkRcStyle *rcstyle;
rcstyle = gtk_rc_style_new ();
rcstyle->xthickness = gtk_spin_button_get_value (spin);
rcstyle->ythickness = GTK_WIDGET (frame)->style->ythickness;
gtk_widget_modify_style (frame, rcstyle);
g_object_unref (rcstyle);
}
/* Function to normalize rounding errors in FP arithmetic to
our desired limits */
#define EPSILON 1e-10
static gdouble
double_normalize (gdouble n)
{
if (fabs (1.0 - n) < EPSILON)
n = 1.0;
else if (n < EPSILON)
n = 0.0;
return n;
}
static void
spin_xalign_cb (GtkSpinButton *spin, GtkFrame *frame)
{
gdouble xalign = double_normalize (gtk_spin_button_get_value (spin));
gtk_frame_set_label_align (frame, xalign, frame->label_yalign);
}
static void
spin_yalign_cb (GtkSpinButton *spin, GtkFrame *frame)
{
gdouble yalign = double_normalize (gtk_spin_button_get_value (spin));
gtk_frame_set_label_align (frame, frame->label_xalign, yalign);
}
int main (int argc, char **argv)
{
GtkWidget *window, *frame, *xthickness_spin, *ythickness_spin, *vbox;
GtkWidget *xalign_spin, *yalign_spin, *button, *table, *label;
gtk_init (&argc, &argv);
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_container_set_border_width (GTK_CONTAINER (window), 5);
gtk_window_set_default_size (GTK_WINDOW (window), 300, 300);
g_signal_connect (G_OBJECT (window), "delete-event", gtk_main_quit, NULL);
vbox = gtk_vbox_new (FALSE, 5);
gtk_container_add (GTK_CONTAINER (window), vbox);
frame = gtk_frame_new ("Testing");
gtk_box_pack_start (GTK_BOX (vbox), frame, TRUE, TRUE, 0);
button = gtk_button_new_with_label ("Hello!");
gtk_container_add (GTK_CONTAINER (frame), button);
table = gtk_table_new (4, 2, FALSE);
gtk_box_pack_start (GTK_BOX (vbox), table, FALSE, FALSE, 0);
/* Spin to control xthickness */
label = gtk_label_new ("xthickness: ");
gtk_table_attach_defaults (GTK_TABLE (table), label, 0, 1, 0, 1);
xthickness_spin = gtk_spin_button_new_with_range (0, 250, 1);
g_signal_connect (G_OBJECT (xthickness_spin), "value-changed", G_CALLBACK (spin_xthickness_cb), frame);
gtk_spin_button_set_value (GTK_SPIN_BUTTON (xthickness_spin), frame->style->xthickness);
gtk_table_attach_defaults (GTK_TABLE (table), xthickness_spin, 1, 2, 0, 1);
/* Spin to control ythickness */
label = gtk_label_new ("ythickness: ");
gtk_table_attach_defaults (GTK_TABLE (table), label, 0, 1, 1, 2);
ythickness_spin = gtk_spin_button_new_with_range (0, 250, 1);
g_signal_connect (G_OBJECT (ythickness_spin), "value-changed", G_CALLBACK (spin_ythickness_cb), frame);
gtk_spin_button_set_value (GTK_SPIN_BUTTON (ythickness_spin), frame->style->ythickness);
gtk_table_attach_defaults (GTK_TABLE (table), ythickness_spin, 1, 2, 1, 2);
/* Spin to control label xalign */
label = gtk_label_new ("xalign: ");
gtk_table_attach_defaults (GTK_TABLE (table), label, 0, 1, 2, 3);
xalign_spin = gtk_spin_button_new_with_range (0.0, 1.0, 0.1);
g_signal_connect (G_OBJECT (xalign_spin), "value-changed", G_CALLBACK (spin_xalign_cb), frame);
gtk_spin_button_set_value (GTK_SPIN_BUTTON (xalign_spin), GTK_FRAME (frame)->label_xalign);
gtk_table_attach_defaults (GTK_TABLE (table), xalign_spin, 1, 2, 2, 3);
/* Spin to control label yalign */
label = gtk_label_new ("yalign: ");
gtk_table_attach_defaults (GTK_TABLE (table), label, 0, 1, 3, 4);
yalign_spin = gtk_spin_button_new_with_range (0.0, 1.0, 0.1);
g_signal_connect (G_OBJECT (yalign_spin), "value-changed", G_CALLBACK (spin_yalign_cb), frame);
gtk_spin_button_set_value (GTK_SPIN_BUTTON (yalign_spin), GTK_FRAME (frame)->label_yalign);
gtk_table_attach_defaults (GTK_TABLE (table), yalign_spin, 1, 2, 3, 4);
gtk_widget_show_all (window);
gtk_main ();
return 0;
}
|
