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
|
#include <gtk/gtk.h>
enum
{
TARGET_GTK_TREE_MODEL_ROW
};
static GtkTargetEntry row_targets[] =
{
{ "GTK_TREE_MODEL_ROW", GTK_TARGET_SAME_APP, TARGET_GTK_TREE_MODEL_ROW }
};
static void
on_button_clicked (GtkWidget *widget, gpointer data)
{
g_print ("Button %d clicked\n", GPOINTER_TO_INT (data));
}
static void
kinetic_scrolling (void)
{
GtkWidget *window, *swindow, *grid;
GtkWidget *label;
GtkWidget *button_grid, *button;
GtkWidget *treeview;
GtkCellRenderer *renderer;
GtkListStore *store;
GtkWidget *textview;
gint i;
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_default_size (GTK_WINDOW (window), 400, 400);
g_signal_connect (window, "delete_event",
G_CALLBACK (gtk_main_quit), NULL);
grid = gtk_grid_new ();
label = gtk_label_new ("Non scrollable widget using viewport");
gtk_grid_attach (GTK_GRID (grid), label, 0, 0, 1, 1);
gtk_widget_set_hexpand (label, TRUE);
gtk_widget_show (label);
label = gtk_label_new ("Scrollable widget: TreeView");
gtk_grid_attach (GTK_GRID (grid), label, 1, 0, 1, 1);
gtk_widget_set_hexpand (label, TRUE);
gtk_widget_show (label);
label = gtk_label_new ("Scrollable widget: TextView");
gtk_grid_attach (GTK_GRID (grid), label, 2, 0, 1, 1);
gtk_widget_set_hexpand (label, TRUE);
gtk_widget_show (label);
button_grid = gtk_grid_new ();
for (i = 0; i < 80; i++)
{
gchar *label = g_strdup_printf ("Button number %d", i);
button = gtk_button_new_with_label (label);
gtk_grid_attach (GTK_GRID (button_grid), button, 0, i, 1, 1);
gtk_widget_set_hexpand (button, TRUE);
gtk_widget_show (button);
g_signal_connect (button, "clicked",
G_CALLBACK (on_button_clicked),
GINT_TO_POINTER (i));
g_free (label);
}
swindow = gtk_scrolled_window_new (NULL, NULL);
gtk_scrolled_window_set_kinetic_scrolling (GTK_SCROLLED_WINDOW (swindow), TRUE);
gtk_scrolled_window_set_capture_button_press (GTK_SCROLLED_WINDOW (swindow), TRUE);
gtk_container_add (GTK_CONTAINER (swindow), button_grid);
gtk_widget_show (button_grid);
gtk_grid_attach (GTK_GRID (grid), swindow, 0, 1, 1, 1);
gtk_widget_show (swindow);
treeview = gtk_tree_view_new ();
gtk_tree_view_enable_model_drag_source (GTK_TREE_VIEW (treeview),
GDK_BUTTON1_MASK,
row_targets,
G_N_ELEMENTS (row_targets),
GDK_ACTION_MOVE | GDK_ACTION_COPY);
gtk_tree_view_enable_model_drag_dest (GTK_TREE_VIEW (treeview),
row_targets,
G_N_ELEMENTS (row_targets),
GDK_ACTION_MOVE | GDK_ACTION_COPY);
renderer = gtk_cell_renderer_text_new ();
g_object_set (renderer, "editable", TRUE, NULL);
gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (treeview),
0, "Title",
renderer,
"text", 0,
NULL);
store = gtk_list_store_new (1, G_TYPE_STRING);
for (i = 0; i < 80; i++)
{
GtkTreeIter iter;
gchar *label = g_strdup_printf ("Row number %d", i);
gtk_list_store_append (store, &iter);
gtk_list_store_set (store, &iter, 0, label, -1);
g_free (label);
}
gtk_tree_view_set_model (GTK_TREE_VIEW (treeview), GTK_TREE_MODEL (store));
g_object_unref (store);
swindow = gtk_scrolled_window_new (NULL, NULL);
gtk_scrolled_window_set_kinetic_scrolling (GTK_SCROLLED_WINDOW (swindow), TRUE);
gtk_scrolled_window_set_capture_button_press (GTK_SCROLLED_WINDOW (swindow), TRUE);
gtk_container_add (GTK_CONTAINER (swindow), treeview);
gtk_widget_show (treeview);
gtk_grid_attach (GTK_GRID (grid), swindow, 1, 1, 1, 1);
gtk_widget_set_hexpand (swindow, TRUE);
gtk_widget_set_vexpand (swindow, TRUE);
gtk_widget_show (swindow);
textview = gtk_text_view_new ();
swindow = gtk_scrolled_window_new (NULL, NULL);
gtk_scrolled_window_set_kinetic_scrolling (GTK_SCROLLED_WINDOW (swindow), TRUE);
gtk_scrolled_window_set_capture_button_press (GTK_SCROLLED_WINDOW (swindow), TRUE);
gtk_container_add (GTK_CONTAINER (swindow), textview);
gtk_widget_show (textview);
gtk_grid_attach (GTK_GRID (grid), swindow, 2, 1, 1, 1);
gtk_widget_set_hexpand (swindow, TRUE);
gtk_widget_set_vexpand (swindow, TRUE);
gtk_widget_show (swindow);
gtk_container_add (GTK_CONTAINER (window), grid);
gtk_widget_show (grid);
gtk_widget_show (window);
}
int
main (int argc, char **argv)
{
gtk_init ();
kinetic_scrolling ();
gtk_main ();
return 0;
}
|
