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
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
|
/* example-start text text.c */
/* text.c */
#include <stdio.h>
#include <gtk/gtk.h>
void text_toggle_editable (GtkWidget *checkbutton,
GtkWidget *text)
{
gtk_text_set_editable(GTK_TEXT(text),
GTK_TOGGLE_BUTTON(checkbutton)->active);
}
void text_toggle_word_wrap (GtkWidget *checkbutton,
GtkWidget *text)
{
gtk_text_set_word_wrap(GTK_TEXT(text),
GTK_TOGGLE_BUTTON(checkbutton)->active);
}
void close_application( GtkWidget *widget,
gpointer data )
{
gtk_main_quit();
}
int main( int argc,
char *argv[] )
{
GtkWidget *window;
GtkWidget *box1;
GtkWidget *box2;
GtkWidget *hbox;
GtkWidget *button;
GtkWidget *check;
GtkWidget *separator;
GtkWidget *table;
GtkWidget *vscrollbar;
GtkWidget *text;
GdkColormap *cmap;
GdkColor color;
GdkFont *fixed_font;
FILE *infile;
gtk_init (&argc, &argv);
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_widget_set_usize (window, 600, 500);
gtk_window_set_policy (GTK_WINDOW(window), TRUE, TRUE, FALSE);
gtk_signal_connect (GTK_OBJECT (window), "destroy",
GTK_SIGNAL_FUNC(close_application),
NULL);
gtk_window_set_title (GTK_WINDOW (window), "Text Widget Example");
gtk_container_set_border_width (GTK_CONTAINER (window), 0);
box1 = gtk_vbox_new (FALSE, 0);
gtk_container_add (GTK_CONTAINER (window), box1);
gtk_widget_show (box1);
box2 = gtk_vbox_new (FALSE, 10);
gtk_container_set_border_width (GTK_CONTAINER (box2), 10);
gtk_box_pack_start (GTK_BOX (box1), box2, TRUE, TRUE, 0);
gtk_widget_show (box2);
table = gtk_table_new (2, 2, FALSE);
gtk_table_set_row_spacing (GTK_TABLE (table), 0, 2);
gtk_table_set_col_spacing (GTK_TABLE (table), 0, 2);
gtk_box_pack_start (GTK_BOX (box2), table, TRUE, TRUE, 0);
gtk_widget_show (table);
/* Create the GtkText widget */
text = gtk_text_new (NULL, NULL);
gtk_text_set_editable (GTK_TEXT (text), TRUE);
gtk_table_attach (GTK_TABLE (table), text, 0, 1, 0, 1,
GTK_EXPAND | GTK_SHRINK | GTK_FILL,
GTK_EXPAND | GTK_SHRINK | GTK_FILL, 0, 0);
gtk_widget_show (text);
/* Add a vertical scrollbar to the GtkText widget */
vscrollbar = gtk_vscrollbar_new (GTK_TEXT (text)->vadj);
gtk_table_attach (GTK_TABLE (table), vscrollbar, 1, 2, 0, 1,
GTK_FILL, GTK_EXPAND | GTK_SHRINK | GTK_FILL, 0, 0);
gtk_widget_show (vscrollbar);
/* Get the system color map and allocate the color red */
cmap = gdk_colormap_get_system();
color.red = 0xffff;
color.green = 0;
color.blue = 0;
if (!gdk_color_alloc(cmap, &color)) {
g_error("couldn't allocate color");
}
/* Load a fixed font */
fixed_font = gdk_font_load ("-misc-fixed-medium-r-*-*-*-140-*-*-*-*-*-*");
/* Realizing a widget creates a window for it,
* ready for us to insert some text */
gtk_widget_realize (text);
/* Freeze the text widget, ready for multiple updates */
gtk_text_freeze (GTK_TEXT (text));
/* Insert some colored text */
gtk_text_insert (GTK_TEXT (text), NULL, &text->style->black, NULL,
"Supports ", -1);
gtk_text_insert (GTK_TEXT (text), NULL, &color, NULL,
"colored ", -1);
gtk_text_insert (GTK_TEXT (text), NULL, &text->style->black, NULL,
"text and different ", -1);
gtk_text_insert (GTK_TEXT (text), fixed_font, &text->style->black, NULL,
"fonts\n\n", -1);
/* Load the file text.c into the text window */
infile = fopen("text.c", "r");
if (infile) {
char buffer[1024];
int nchars;
while (1)
{
nchars = fread(buffer, 1, 1024, infile);
gtk_text_insert (GTK_TEXT (text), fixed_font, NULL,
NULL, buffer, nchars);
if (nchars < 1024)
break;
}
fclose (infile);
}
/* Thaw the text widget, allowing the updates to become visible */
gtk_text_thaw (GTK_TEXT (text));
hbox = gtk_hbutton_box_new ();
gtk_box_pack_start (GTK_BOX (box2), hbox, FALSE, FALSE, 0);
gtk_widget_show (hbox);
check = gtk_check_button_new_with_label("Editable");
gtk_box_pack_start (GTK_BOX (hbox), check, FALSE, FALSE, 0);
gtk_signal_connect (GTK_OBJECT(check), "toggled",
GTK_SIGNAL_FUNC(text_toggle_editable), text);
gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(check), TRUE);
gtk_widget_show (check);
check = gtk_check_button_new_with_label("Wrap Words");
gtk_box_pack_start (GTK_BOX (hbox), check, FALSE, TRUE, 0);
gtk_signal_connect (GTK_OBJECT(check), "toggled",
GTK_SIGNAL_FUNC(text_toggle_word_wrap), text);
gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(check), FALSE);
gtk_widget_show (check);
separator = gtk_hseparator_new ();
gtk_box_pack_start (GTK_BOX (box1), separator, FALSE, TRUE, 0);
gtk_widget_show (separator);
box2 = gtk_vbox_new (FALSE, 10);
gtk_container_set_border_width (GTK_CONTAINER (box2), 10);
gtk_box_pack_start (GTK_BOX (box1), box2, FALSE, TRUE, 0);
gtk_widget_show (box2);
button = gtk_button_new_with_label ("close");
gtk_signal_connect (GTK_OBJECT (button), "clicked",
GTK_SIGNAL_FUNC(close_application),
NULL);
gtk_box_pack_start (GTK_BOX (box2), button, TRUE, TRUE, 0);
GTK_WIDGET_SET_FLAGS (button, GTK_CAN_DEFAULT);
gtk_widget_grab_default (button);
gtk_widget_show (button);
gtk_widget_show (window);
gtk_main ();
return(0);
}
/* example-end */
|
