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
#include <ctk/ctk.h>

enum
{
  TARGET_CTK_TREE_MODEL_ROW
};

static CtkTargetEntry row_targets[] =
{
  { "CTK_TREE_MODEL_ROW", CTK_TARGET_SAME_APP, TARGET_CTK_TREE_MODEL_ROW }
};

static void
on_button_clicked (CtkWidget *widget G_GNUC_UNUSED,
		   gpointer   data)
{
  g_print ("Button %d clicked\n", GPOINTER_TO_INT (data));
}

static void
kinetic_scrolling (void)
{
  CtkWidget *window, *swindow, *grid;
  CtkWidget *label;<--- Shadowed declaration<--- Shadowed declaration
  CtkWidget *button_grid;
  CtkWidget *treeview;
  CtkCellRenderer *renderer;
  CtkListStore *store;
  CtkWidget *textview;
  gint i;

  window = ctk_window_new (CTK_WINDOW_TOPLEVEL);
  ctk_container_set_border_width (CTK_CONTAINER (window), 5);
  ctk_window_set_default_size (CTK_WINDOW (window), 400, 400);
  g_signal_connect (window, "delete_event",
                    G_CALLBACK (ctk_main_quit), NULL);

  grid = ctk_grid_new ();

  label = ctk_label_new ("Non scrollable widget using viewport");
  ctk_grid_attach (CTK_GRID (grid), label, 0, 0, 1, 1);
  ctk_widget_set_hexpand (label, TRUE);
  ctk_widget_show (label);

  label = ctk_label_new ("Scrollable widget: TreeView");
  ctk_grid_attach (CTK_GRID (grid), label, 1, 0, 1, 1);
  ctk_widget_set_hexpand (label, TRUE);
  ctk_widget_show (label);

  label = ctk_label_new ("Scrollable widget: TextView");
  ctk_grid_attach (CTK_GRID (grid), label, 2, 0, 1, 1);
  ctk_widget_set_hexpand (label, TRUE);
  ctk_widget_show (label);

  button_grid = ctk_grid_new ();
  for (i = 0; i < 80; i++)
    {
      CtkWidget *button;

      gchar *label = g_strdup_printf ("Button number %d", i);<--- Shadow variable

      button = ctk_button_new_with_label (label);
      ctk_grid_attach (CTK_GRID (button_grid), button, 0, i, 1, 1);
      ctk_widget_set_hexpand (button, TRUE);
      ctk_widget_show (button);
      g_signal_connect (button, "clicked",
                        G_CALLBACK (on_button_clicked),
                        GINT_TO_POINTER (i));
      g_free (label);
    }

  swindow = ctk_scrolled_window_new (NULL, NULL);
  ctk_scrolled_window_set_kinetic_scrolling (CTK_SCROLLED_WINDOW (swindow), TRUE);
  ctk_scrolled_window_set_capture_button_press (CTK_SCROLLED_WINDOW (swindow), TRUE);
  ctk_container_add (CTK_CONTAINER (swindow), button_grid);
  ctk_widget_show (button_grid);

  ctk_grid_attach (CTK_GRID (grid), swindow, 0, 1, 1, 1);
  ctk_widget_show (swindow);

  treeview = ctk_tree_view_new ();
  ctk_tree_view_enable_model_drag_source (CTK_TREE_VIEW (treeview),
                                          CDK_BUTTON1_MASK,
                                          row_targets,
                                          G_N_ELEMENTS (row_targets),
                                          CDK_ACTION_MOVE | CDK_ACTION_COPY);
  ctk_tree_view_enable_model_drag_dest (CTK_TREE_VIEW (treeview),
                                        row_targets,
                                        G_N_ELEMENTS (row_targets),
                                        CDK_ACTION_MOVE | CDK_ACTION_COPY);

  renderer = ctk_cell_renderer_text_new ();
  g_object_set (renderer, "editable", TRUE, NULL);
  ctk_tree_view_insert_column_with_attributes (CTK_TREE_VIEW (treeview),
                                               0, "Title",
                                               renderer,
                                               "text", 0,
                                               NULL);
  store = ctk_list_store_new (1, G_TYPE_STRING);
  for (i = 0; i < 80; i++)
    {
      CtkTreeIter iter;
      gchar *label = g_strdup_printf ("Row number %d", i);<--- Shadow variable

      ctk_list_store_append (store, &iter);
      ctk_list_store_set (store, &iter, 0, label, -1);
      g_free (label);
    }
  ctk_tree_view_set_model (CTK_TREE_VIEW (treeview), CTK_TREE_MODEL (store));
  g_object_unref (store);

  swindow = ctk_scrolled_window_new (NULL, NULL);
  ctk_scrolled_window_set_kinetic_scrolling (CTK_SCROLLED_WINDOW (swindow), TRUE);
  ctk_scrolled_window_set_capture_button_press (CTK_SCROLLED_WINDOW (swindow), TRUE);
  ctk_container_add (CTK_CONTAINER (swindow), treeview);
  ctk_widget_show (treeview);

  ctk_grid_attach (CTK_GRID (grid), swindow, 1, 1, 1, 1);
  ctk_widget_set_hexpand (swindow, TRUE);
  ctk_widget_set_vexpand (swindow, TRUE);
  ctk_widget_show (swindow);

  textview = ctk_text_view_new ();
  swindow = ctk_scrolled_window_new (NULL, NULL);
  ctk_scrolled_window_set_kinetic_scrolling (CTK_SCROLLED_WINDOW (swindow), TRUE);
  ctk_scrolled_window_set_capture_button_press (CTK_SCROLLED_WINDOW (swindow), TRUE);
  ctk_container_add (CTK_CONTAINER (swindow), textview);
  ctk_widget_show (textview);

  ctk_grid_attach (CTK_GRID (grid), swindow, 2, 1, 1, 1);
  ctk_widget_set_hexpand (swindow, TRUE);
  ctk_widget_set_vexpand (swindow, TRUE);
  ctk_widget_show (swindow);

  ctk_container_add (CTK_CONTAINER (window), grid);
  ctk_widget_show (grid);

  ctk_widget_show (window);
}

int
main (int    argc G_GNUC_UNUSED,
      char **argv G_GNUC_UNUSED)
{
  ctk_init (NULL, NULL);

  kinetic_scrolling ();

  ctk_main ();

  return 0;
}