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
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
|
/* example-start progressbar progressbar.c */
#include <gtk/gtk.h>
typedef struct _ProgressData {
GtkWidget *window;
GtkWidget *pbar;
int timer;
} ProgressData;
/* Update the value of the progress bar so that we get
* some movement */
gint progress_timeout( gpointer data )
{
gfloat new_val;
GtkAdjustment *adj;
/* Calculate the value of the progress bar using the
* value range set in the adjustment object */
new_val = gtk_progress_get_value( GTK_PROGRESS(data) ) + 1;
adj = GTK_PROGRESS (data)->adjustment;
if (new_val > adj->upper)
new_val = adj->lower;
/* Set the new value */
gtk_progress_set_value (GTK_PROGRESS (data), new_val);
/* As this is a timeout function, return TRUE so that it
* continues to get called */
return(TRUE);
}
/* Callback that toggles the text display within the progress
* bar trough */
void toggle_show_text( GtkWidget *widget,
ProgressData *pdata )
{
gtk_progress_set_show_text (GTK_PROGRESS (pdata->pbar),
GTK_TOGGLE_BUTTON (widget)->active);
}
/* Callback that toggles the activity mode of the progress
* bar */
void toggle_activity_mode( GtkWidget *widget,
ProgressData *pdata )
{
gtk_progress_set_activity_mode (GTK_PROGRESS (pdata->pbar),
GTK_TOGGLE_BUTTON (widget)->active);
}
/* Callback that toggles the continuous mode of the progress
* bar */
void set_continuous_mode( GtkWidget *widget,
ProgressData *pdata )
{
gtk_progress_bar_set_bar_style (GTK_PROGRESS_BAR (pdata->pbar),
GTK_PROGRESS_CONTINUOUS);
}
/* Callback that toggles the discrete mode of the progress
* bar */
void set_discrete_mode( GtkWidget *widget,
ProgressData *pdata )
{
gtk_progress_bar_set_bar_style (GTK_PROGRESS_BAR (pdata->pbar),
GTK_PROGRESS_DISCRETE);
}
/* Clean up allocated memory and remove the timer */
void destroy_progress( GtkWidget *widget,
ProgressData *pdata)
{
gtk_timeout_remove (pdata->timer);
pdata->timer = 0;
pdata->window = NULL;
g_free(pdata);
gtk_main_quit();
}
int main( int argc,
char *argv[])
{
ProgressData *pdata;
GtkWidget *align;
GtkWidget *separator;
GtkWidget *table;
GtkAdjustment *adj;
GtkWidget *button;
GtkWidget *check;
GtkWidget *vbox;
gtk_init (&argc, &argv);
/* Allocate memory for the data that is passwd to the callbacks */
pdata = g_malloc( sizeof(ProgressData) );
pdata->window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_policy (GTK_WINDOW (pdata->window), FALSE, FALSE, TRUE);
gtk_signal_connect (GTK_OBJECT (pdata->window), "destroy",
GTK_SIGNAL_FUNC (destroy_progress),
pdata);
gtk_window_set_title (GTK_WINDOW (pdata->window), "GtkProgressBar");
gtk_container_set_border_width (GTK_CONTAINER (pdata->window), 0);
vbox = gtk_vbox_new (FALSE, 5);
gtk_container_set_border_width (GTK_CONTAINER (vbox), 10);
gtk_container_add (GTK_CONTAINER (pdata->window), vbox);
gtk_widget_show(vbox);
/* Create a centering alignment object */
align = gtk_alignment_new (0.5, 0.5, 0, 0);
gtk_box_pack_start (GTK_BOX (vbox), align, FALSE, FALSE, 5);
gtk_widget_show(align);
/* Create a Adjusment object to hold the range of the
* progress bar */
adj = (GtkAdjustment *) gtk_adjustment_new (0, 1, 150, 0, 0, 0);
/* Create the GtkProgressBar using the adjustment */
pdata->pbar = gtk_progress_bar_new_with_adjustment (adj);
/* Set the format of the string that can be displayed in the
* trough of the progress bar:
* %p - percentage
* %v - value
* %l - lower range value
* %u - upper range value */
gtk_progress_set_format_string (GTK_PROGRESS (pdata->pbar),
"%v from [%l-%u] (=%p%%)");
gtk_container_add (GTK_CONTAINER (align), pdata->pbar);
gtk_widget_show(pdata->pbar);
/* Add a timer callback to update the value of the progress bar */
pdata->timer = gtk_timeout_add (100, progress_timeout, pdata->pbar);
separator = gtk_hseparator_new ();
gtk_box_pack_start (GTK_BOX (vbox), separator, FALSE, FALSE, 0);
gtk_widget_show(separator);
/* rows, columns, homogeneous */
table = gtk_table_new (2, 3, FALSE);
gtk_box_pack_start (GTK_BOX (vbox), table, FALSE, TRUE, 0);
gtk_widget_show(table);
/* Add a check button to select displaying of the trough text */
check = gtk_check_button_new_with_label ("Show text");
gtk_table_attach (GTK_TABLE (table), check, 0, 1, 0, 1,
GTK_EXPAND | GTK_FILL, GTK_EXPAND | GTK_FILL,
5, 5);
gtk_signal_connect (GTK_OBJECT (check), "clicked",
GTK_SIGNAL_FUNC (toggle_show_text),
pdata);
gtk_widget_show(check);
/* Add a check button to toggle activity mode */
check = gtk_check_button_new_with_label ("Activity mode");
gtk_table_attach (GTK_TABLE (table), check, 0, 1, 1, 2,
GTK_EXPAND | GTK_FILL, GTK_EXPAND | GTK_FILL,
5, 5);
gtk_signal_connect (GTK_OBJECT (check), "clicked",
GTK_SIGNAL_FUNC (toggle_activity_mode),
pdata);
gtk_widget_show(check);
separator = gtk_vseparator_new ();
gtk_table_attach (GTK_TABLE (table), separator, 1, 2, 0, 2,
GTK_EXPAND | GTK_FILL, GTK_EXPAND | GTK_FILL,
5, 5);
gtk_widget_show(separator);
/* Add a radio button to select continuous display mode */
button = gtk_radio_button_new_with_label (NULL, "Continuous");
gtk_table_attach (GTK_TABLE (table), button, 2, 3, 0, 1,
GTK_EXPAND | GTK_FILL, GTK_EXPAND | GTK_FILL,
5, 5);
gtk_signal_connect (GTK_OBJECT (button), "clicked",
GTK_SIGNAL_FUNC (set_continuous_mode),
pdata);
gtk_widget_show (button);
/* Add a radio button to select discrete display mode */
button = gtk_radio_button_new_with_label(
gtk_radio_button_group (GTK_RADIO_BUTTON (button)),
"Discrete");
gtk_table_attach (GTK_TABLE (table), button, 2, 3, 1, 2,
GTK_EXPAND | GTK_FILL, GTK_EXPAND | GTK_FILL,
5, 5);
gtk_signal_connect (GTK_OBJECT (button), "clicked",
GTK_SIGNAL_FUNC (set_discrete_mode),
pdata);
gtk_widget_show (button);
separator = gtk_hseparator_new ();
gtk_box_pack_start (GTK_BOX (vbox), separator, FALSE, FALSE, 0);
gtk_widget_show(separator);
/* Add a button to exit the program */
button = gtk_button_new_with_label ("close");
gtk_signal_connect_object (GTK_OBJECT (button), "clicked",
(GtkSignalFunc) gtk_widget_destroy,
GTK_OBJECT (pdata->window));
gtk_box_pack_start (GTK_BOX (vbox), button, FALSE, FALSE, 0);
/* This makes it so the button is the default. */
GTK_WIDGET_SET_FLAGS (button, GTK_CAN_DEFAULT);
/* This grabs this button to be the default button. Simply hitting
* the "Enter" key will cause this button to activate. */
gtk_widget_grab_default (button);
gtk_widget_show(button);
gtk_widget_show (pdata->window);
gtk_main ();
return(0);
}
/* example-end */
|
