| #include <gtk/gtk.h> |
| |
| |
| static void |
| horizontal_policy_changed (GtkComboBox *combo_box, |
| GtkViewport *viewport) |
| { |
| GtkScrollablePolicy policy = gtk_combo_box_get_active (combo_box); |
| |
| gtk_scrollable_set_hscroll_policy (GTK_SCROLLABLE (viewport), policy); |
| } |
| |
| static void |
| vertical_policy_changed (GtkComboBox *combo_box, |
| GtkViewport *viewport) |
| { |
| GtkScrollablePolicy policy = gtk_combo_box_get_active (combo_box); |
| |
| gtk_scrollable_set_vscroll_policy (GTK_SCROLLABLE (viewport), policy); |
| } |
| |
| static void |
| content_width_changed (GtkSpinButton *spin_button, |
| gpointer data) |
| { |
| GtkScrolledWindow *swindow = data; |
| gdouble value; |
| |
| value = gtk_spin_button_get_value (spin_button); |
| gtk_scrolled_window_set_min_content_width (swindow, (gint)value); |
| } |
| |
| static void |
| content_height_changed (GtkSpinButton *spin_button, |
| gpointer data) |
| { |
| GtkScrolledWindow *swindow = data; |
| gdouble value; |
| |
| value = gtk_spin_button_get_value (spin_button); |
| gtk_scrolled_window_set_min_content_height (swindow, (gint)value); |
| } |
| |
| static void |
| kinetic_scrolling_changed (GtkToggleButton *toggle_button, |
| gpointer data) |
| { |
| GtkScrolledWindow *swindow = data; |
| gboolean enabled = gtk_toggle_button_get_active (toggle_button); |
| |
| gtk_scrolled_window_set_kinetic_scrolling (swindow, enabled); |
| } |
| |
| static void |
| add_row (GtkButton *button, |
| GtkListBox *listbox) |
| { |
| GtkWidget *row; |
| |
| row = g_object_new (GTK_TYPE_LIST_BOX_ROW, NULL); |
| gtk_container_add (GTK_CONTAINER (row), gtk_label_new ("test")); |
| gtk_container_add (GTK_CONTAINER (listbox), row); |
| } |
| |
| static void |
| remove_row (GtkButton *button, |
| GtkListBox *listbox) |
| { |
| GList *children, *last; |
| |
| children = gtk_container_get_children (GTK_CONTAINER (listbox)); |
| last = g_list_last (children); |
| |
| if (last) |
| gtk_container_remove (GTK_CONTAINER (listbox), last->data); |
| |
| g_list_free (children); |
| } |
| |
| static void |
| scrollable_policy (void) |
| { |
| GtkWidget *window, *swindow, *hbox, *vbox, *frame, *cntl, *listbox; |
| GtkWidget *viewport, *label, *expander, *widget, *popover; |
| |
| window = gtk_window_new (GTK_WINDOW_TOPLEVEL); |
| hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 2); |
| vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 6); |
| |
| gtk_widget_show (vbox); |
| gtk_widget_show (hbox); |
| gtk_container_add (GTK_CONTAINER (window), hbox); |
| gtk_container_add (GTK_CONTAINER (hbox), vbox); |
| |
| frame = gtk_frame_new ("Scrolled Window"); |
| gtk_widget_set_hexpand (frame, TRUE); |
| gtk_container_add (GTK_CONTAINER (hbox), frame); |
| |
| swindow = gtk_scrolled_window_new (NULL, NULL); |
| gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (swindow), |
| GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC); |
| |
| gtk_widget_show (swindow); |
| gtk_container_add (GTK_CONTAINER (frame), swindow); |
| |
| viewport = gtk_viewport_new (NULL, NULL); |
| label = gtk_label_new ("Here is a wrapping label with a minimum width-chars of 40 and " |
| "a natural max-width-chars of 100 to demonstrate the usage of " |
| "scrollable widgets \"hscroll-policy\" and \"vscroll-policy\" " |
| "properties. Note also that when playing with the window height, " |
| "one can observe that the vscrollbar disappears as soon as there " |
| "is enough height to fit the content vertically if the window were " |
| "to be allocated a width without a vscrollbar present"); |
| |
| gtk_label_set_wrap (GTK_LABEL (label), TRUE); |
| gtk_label_set_width_chars (GTK_LABEL (label), 40); |
| gtk_label_set_max_width_chars (GTK_LABEL (label), 100); |
| |
| gtk_widget_show (label); |
| gtk_widget_show (viewport); |
| gtk_container_add (GTK_CONTAINER (viewport), label); |
| gtk_container_add (GTK_CONTAINER (swindow), viewport); |
| |
| /* Add controls here */ |
| expander = gtk_expander_new ("Controls"); |
| gtk_expander_set_expanded (GTK_EXPANDER (expander), TRUE); |
| cntl = gtk_box_new (GTK_ORIENTATION_VERTICAL, 2); |
| gtk_widget_show (cntl); |
| gtk_widget_show (expander); |
| gtk_container_add (GTK_CONTAINER (expander), cntl); |
| gtk_container_add (GTK_CONTAINER (vbox), expander); |
| |
| /* Add Horizontal policy control here */ |
| hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 2); |
| gtk_widget_show (hbox); |
| |
| widget = gtk_label_new ("hscroll-policy"); |
| gtk_widget_set_hexpand (widget, TRUE); |
| gtk_container_add (GTK_CONTAINER (hbox), widget); |
| |
| widget = gtk_combo_box_text_new (); |
| gtk_combo_box_text_append_text (GTK_COMBO_BOX_TEXT (widget), "Minimum"); |
| gtk_combo_box_text_append_text (GTK_COMBO_BOX_TEXT (widget), "Natural"); |
| gtk_combo_box_set_active (GTK_COMBO_BOX (widget), 0); |
| gtk_widget_set_hexpand (widget, TRUE); |
| |
| gtk_container_add (GTK_CONTAINER (hbox), widget); |
| gtk_container_add (GTK_CONTAINER (cntl), hbox); |
| |
| g_signal_connect (G_OBJECT (widget), "changed", |
| G_CALLBACK (horizontal_policy_changed), viewport); |
| |
| /* Add Vertical policy control here */ |
| hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 2); |
| gtk_widget_show (hbox); |
| |
| widget = gtk_label_new ("vscroll-policy"); |
| gtk_widget_set_hexpand (widget, TRUE); |
| gtk_container_add (GTK_CONTAINER (hbox), widget); |
| |
| widget = gtk_combo_box_text_new (); |
| gtk_combo_box_text_append_text (GTK_COMBO_BOX_TEXT (widget), "Minimum"); |
| gtk_combo_box_text_append_text (GTK_COMBO_BOX_TEXT (widget), "Natural"); |
| gtk_combo_box_set_active (GTK_COMBO_BOX (widget), 0); |
| gtk_widget_set_hexpand (widget, TRUE); |
| |
| gtk_container_add (GTK_CONTAINER (hbox), widget); |
| gtk_container_add (GTK_CONTAINER (cntl), hbox); |
| |
| g_signal_connect (G_OBJECT (widget), "changed", |
| G_CALLBACK (vertical_policy_changed), viewport); |
| |
| /* Content size controls */ |
| hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 2); |
| |
| widget = gtk_label_new ("min-content-width"); |
| gtk_widget_set_hexpand (widget, TRUE); |
| gtk_container_add (GTK_CONTAINER (hbox), widget); |
| |
| widget = gtk_spin_button_new_with_range (100.0, 1000.0, 10.0); |
| gtk_widget_set_hexpand (widget, TRUE); |
| gtk_container_add (GTK_CONTAINER (hbox), widget); |
| gtk_container_add (GTK_CONTAINER (cntl), hbox); |
| gtk_widget_show (widget); |
| gtk_widget_show (hbox); |
| |
| g_signal_connect (G_OBJECT (widget), "value-changed", |
| G_CALLBACK (content_width_changed), swindow); |
| |
| hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 2); |
| |
| widget = gtk_label_new ("min-content-height"); |
| gtk_widget_set_hexpand (widget, TRUE); |
| gtk_container_add (GTK_CONTAINER (hbox), widget); |
| |
| widget = gtk_spin_button_new_with_range (100.0, 1000.0, 10.0); |
| gtk_widget_set_hexpand (widget, TRUE); |
| gtk_container_add (GTK_CONTAINER (hbox), widget); |
| gtk_container_add (GTK_CONTAINER (cntl), hbox); |
| gtk_widget_show (widget); |
| gtk_widget_show (hbox); |
| |
| g_signal_connect (G_OBJECT (widget), "value-changed", |
| G_CALLBACK (content_height_changed), swindow); |
| |
| /* Add Kinetic scrolling control here */ |
| widget = gtk_check_button_new_with_label ("Kinetic scrolling"); |
| gtk_widget_set_hexpand (widget, TRUE); |
| gtk_container_add (GTK_CONTAINER (cntl), widget); |
| g_signal_connect (G_OBJECT (widget), "toggled", |
| G_CALLBACK (kinetic_scrolling_changed), swindow); |
| |
| gtk_widget_show (window); |
| |
| /* Popover */ |
| popover = gtk_popover_new (NULL); |
| |
| widget = gtk_menu_button_new (); |
| gtk_menu_button_set_popover (GTK_MENU_BUTTON (widget), popover); |
| gtk_menu_button_set_label (GTK_MENU_BUTTON (widget), "Popover"); |
| gtk_container_add (GTK_CONTAINER (cntl), widget); |
| |
| vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 6); |
| gtk_container_add (GTK_CONTAINER (popover), vbox); |
| |
| /* Popover's scrolled window */ |
| swindow = gtk_scrolled_window_new (NULL, NULL); |
| gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (swindow), |
| GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC); |
| |
| gtk_container_add (GTK_CONTAINER (vbox), swindow); |
| |
| /* Listbox */ |
| listbox = gtk_list_box_new (); |
| gtk_container_add (GTK_CONTAINER (swindow), listbox); |
| gtk_widget_show (listbox); |
| |
| /* Min content */ |
| hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 2); |
| |
| widget = gtk_label_new ("min-content-width"); |
| gtk_widget_set_hexpand (widget, TRUE); |
| gtk_container_add (GTK_CONTAINER (hbox), widget); |
| |
| widget = gtk_spin_button_new_with_range (0.0, 150.0, 10.0); |
| gtk_widget_set_hexpand (widget, TRUE); |
| gtk_container_add (GTK_CONTAINER (hbox), widget); |
| |
| g_object_bind_property (gtk_spin_button_get_adjustment (GTK_SPIN_BUTTON (widget)), |
| "value", |
| swindow, |
| "min-content-width", |
| G_BINDING_DEFAULT | G_BINDING_SYNC_CREATE); |
| |
| widget = gtk_label_new ("min-content-height"); |
| gtk_widget_set_hexpand (widget, TRUE); |
| gtk_container_add (GTK_CONTAINER (hbox), widget); |
| |
| |
| widget = gtk_spin_button_new_with_range (0.0, 150.0, 10.0); |
| gtk_widget_set_hexpand (widget, TRUE); |
| gtk_container_add (GTK_CONTAINER (hbox), widget); |
| gtk_container_add (GTK_CONTAINER (vbox), hbox); |
| |
| g_object_bind_property (gtk_spin_button_get_adjustment (GTK_SPIN_BUTTON (widget)), |
| "value", |
| swindow, |
| "min-content-height", |
| G_BINDING_DEFAULT | G_BINDING_SYNC_CREATE); |
| |
| /* Max content */ |
| hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 2); |
| |
| widget = gtk_label_new ("max-content-width"); |
| gtk_widget_set_hexpand (widget, TRUE); |
| gtk_container_add (GTK_CONTAINER (hbox), widget); |
| |
| widget = gtk_spin_button_new_with_range (250.0, 1000.0, 10.0); |
| gtk_widget_set_hexpand (widget, TRUE); |
| gtk_container_add (GTK_CONTAINER (hbox), widget); |
| |
| g_object_bind_property (gtk_spin_button_get_adjustment (GTK_SPIN_BUTTON (widget)), |
| "value", |
| swindow, |
| "max-content-width", |
| G_BINDING_DEFAULT | G_BINDING_SYNC_CREATE); |
| |
| widget = gtk_label_new ("max-content-height"); |
| gtk_widget_set_hexpand (widget, TRUE); |
| gtk_container_add (GTK_CONTAINER (hbox), widget); |
| |
| widget = gtk_spin_button_new_with_range (250.0, 1000.0, 10.0); |
| gtk_widget_set_hexpand (widget, TRUE); |
| gtk_container_add (GTK_CONTAINER (hbox), widget); |
| gtk_container_add (GTK_CONTAINER (vbox), hbox); |
| |
| g_object_bind_property (gtk_spin_button_get_adjustment (GTK_SPIN_BUTTON (widget)), |
| "value", |
| swindow, |
| "max-content-height", |
| G_BINDING_DEFAULT | G_BINDING_SYNC_CREATE); |
| |
| /* Add and Remove buttons */ |
| hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 2); |
| |
| widget = gtk_button_new_with_label ("Remove"); |
| gtk_widget_set_hexpand (widget, TRUE); |
| gtk_container_add (GTK_CONTAINER (hbox), widget); |
| |
| g_signal_connect (widget, "clicked", |
| G_CALLBACK (remove_row), listbox); |
| |
| widget = gtk_button_new_with_label ("Add"); |
| gtk_widget_set_hexpand (widget, TRUE); |
| gtk_container_add (GTK_CONTAINER (hbox), widget); |
| gtk_container_add (GTK_CONTAINER (vbox), hbox); |
| |
| g_signal_connect (widget, "clicked", |
| G_CALLBACK (add_row), listbox); |
| } |
| |
| |
| int |
| main (int argc, char *argv[]) |
| { |
| gtk_init (); |
| |
| scrollable_policy (); |
| |
| gtk_main (); |
| |
| return 0; |
| } |
