mirror of
https://gitlab.gnome.org/GNOME/gtk.git
synced 2024-12-28 06:21:14 +00:00
386b63b85d
In 99.9% of all cases, these are just NULL, NULL. So just do away with these arguments, people can use the setters for the rare cases where they want the scrolled window to use a different adjustment.
317 lines
10 KiB
C
317 lines
10 KiB
C
#include <gtk/gtk.h>
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static void
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horizontal_policy_changed (GtkComboBox *combo_box,
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GtkViewport *viewport)
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{
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GtkScrollablePolicy policy = gtk_combo_box_get_active (combo_box);
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gtk_scrollable_set_hscroll_policy (GTK_SCROLLABLE (viewport), policy);
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}
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static void
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vertical_policy_changed (GtkComboBox *combo_box,
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GtkViewport *viewport)
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{
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GtkScrollablePolicy policy = gtk_combo_box_get_active (combo_box);
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gtk_scrollable_set_vscroll_policy (GTK_SCROLLABLE (viewport), policy);
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}
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static void
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content_width_changed (GtkSpinButton *spin_button,
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gpointer data)
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{
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GtkScrolledWindow *swindow = data;
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gdouble value;
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value = gtk_spin_button_get_value (spin_button);
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gtk_scrolled_window_set_min_content_width (swindow, (gint)value);
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}
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static void
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content_height_changed (GtkSpinButton *spin_button,
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gpointer data)
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{
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GtkScrolledWindow *swindow = data;
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gdouble value;
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value = gtk_spin_button_get_value (spin_button);
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gtk_scrolled_window_set_min_content_height (swindow, (gint)value);
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}
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static void
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kinetic_scrolling_changed (GtkToggleButton *toggle_button,
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gpointer data)
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{
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GtkScrolledWindow *swindow = data;
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gboolean enabled = gtk_toggle_button_get_active (toggle_button);
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gtk_scrolled_window_set_kinetic_scrolling (swindow, enabled);
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}
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static void
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add_row (GtkButton *button,
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GtkListBox *listbox)
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{
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GtkWidget *row;
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row = g_object_new (GTK_TYPE_LIST_BOX_ROW, NULL);
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gtk_list_box_row_set_child (GTK_LIST_BOX_ROW (row), gtk_label_new ("test"));
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gtk_list_box_insert (GTK_LIST_BOX (listbox), row, -1);
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}
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static void
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remove_row (GtkButton *button,
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GtkListBox *listbox)
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{
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GtkWidget *last;
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last = gtk_widget_get_last_child (GTK_WIDGET (listbox));
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if (last)
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gtk_list_box_remove (GTK_LIST_BOX (listbox), last);
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}
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static void
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scrollable_policy (void)
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{
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GtkWidget *window, *swindow, *hbox, *vbox, *frame, *cntl, *listbox;
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GtkWidget *viewport, *label, *expander, *widget, *popover;
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window = gtk_window_new ();
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hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 2);
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vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 6);
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gtk_window_set_child (GTK_WINDOW (window), hbox);
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gtk_box_append (GTK_BOX (hbox), vbox);
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frame = gtk_frame_new ("Scrolled Window");
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gtk_widget_set_hexpand (frame, TRUE);
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gtk_box_append (GTK_BOX (hbox), frame);
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swindow = gtk_scrolled_window_new ();
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gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (swindow),
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GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
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gtk_frame_set_child (GTK_FRAME (frame), swindow);
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viewport = gtk_viewport_new (NULL, NULL);
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label = gtk_label_new ("Here is a wrapping label with a minimum width-chars of 40 and "
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"a natural max-width-chars of 100 to demonstrate the usage of "
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"scrollable widgets \"hscroll-policy\" and \"vscroll-policy\" "
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"properties. Note also that when playing with the window height, "
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"one can observe that the vscrollbar disappears as soon as there "
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"is enough height to fit the content vertically if the window were "
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"to be allocated a width without a vscrollbar present");
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gtk_label_set_wrap (GTK_LABEL (label), TRUE);
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gtk_label_set_width_chars (GTK_LABEL (label), 40);
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gtk_label_set_max_width_chars (GTK_LABEL (label), 100);
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gtk_viewport_set_child (GTK_VIEWPORT (viewport), label);
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gtk_scrolled_window_set_child (GTK_SCROLLED_WINDOW (swindow), viewport);
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/* Add controls here */
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expander = gtk_expander_new ("Controls");
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gtk_expander_set_expanded (GTK_EXPANDER (expander), TRUE);
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cntl = gtk_box_new (GTK_ORIENTATION_VERTICAL, 2);
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gtk_expander_set_child (GTK_EXPANDER (expander), cntl);
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gtk_box_append (GTK_BOX (vbox), expander);
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/* Add Horizontal policy control here */
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hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 2);
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widget = gtk_label_new ("hscroll-policy");
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gtk_widget_set_hexpand (widget, TRUE);
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gtk_box_append (GTK_BOX (hbox), widget);
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widget = gtk_combo_box_text_new ();
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gtk_combo_box_text_append_text (GTK_COMBO_BOX_TEXT (widget), "Minimum");
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gtk_combo_box_text_append_text (GTK_COMBO_BOX_TEXT (widget), "Natural");
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gtk_combo_box_set_active (GTK_COMBO_BOX (widget), 0);
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gtk_widget_set_hexpand (widget, TRUE);
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gtk_box_append (GTK_BOX (hbox), widget);
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gtk_box_append (GTK_BOX (cntl), hbox);
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g_signal_connect (G_OBJECT (widget), "changed",
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G_CALLBACK (horizontal_policy_changed), viewport);
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/* Add Vertical policy control here */
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hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 2);
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widget = gtk_label_new ("vscroll-policy");
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gtk_widget_set_hexpand (widget, TRUE);
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gtk_box_append (GTK_BOX (hbox), widget);
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widget = gtk_combo_box_text_new ();
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gtk_combo_box_text_append_text (GTK_COMBO_BOX_TEXT (widget), "Minimum");
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gtk_combo_box_text_append_text (GTK_COMBO_BOX_TEXT (widget), "Natural");
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gtk_combo_box_set_active (GTK_COMBO_BOX (widget), 0);
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gtk_widget_set_hexpand (widget, TRUE);
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gtk_box_append (GTK_BOX (hbox), widget);
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gtk_box_append (GTK_BOX (cntl), hbox);
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g_signal_connect (G_OBJECT (widget), "changed",
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G_CALLBACK (vertical_policy_changed), viewport);
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/* Content size controls */
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hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 2);
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widget = gtk_label_new ("min-content-width");
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gtk_widget_set_hexpand (widget, TRUE);
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gtk_box_append (GTK_BOX (hbox), widget);
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widget = gtk_spin_button_new_with_range (100.0, 1000.0, 10.0);
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gtk_widget_set_hexpand (widget, TRUE);
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gtk_box_append (GTK_BOX (hbox), widget);
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gtk_box_append (GTK_BOX (cntl), hbox);
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g_signal_connect (G_OBJECT (widget), "value-changed",
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G_CALLBACK (content_width_changed), swindow);
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hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 2);
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widget = gtk_label_new ("min-content-height");
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gtk_widget_set_hexpand (widget, TRUE);
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gtk_box_append (GTK_BOX (hbox), widget);
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widget = gtk_spin_button_new_with_range (100.0, 1000.0, 10.0);
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gtk_widget_set_hexpand (widget, TRUE);
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gtk_box_append (GTK_BOX (hbox), widget);
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gtk_box_append (GTK_BOX (cntl), hbox);
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g_signal_connect (G_OBJECT (widget), "value-changed",
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G_CALLBACK (content_height_changed), swindow);
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/* Add Kinetic scrolling control here */
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widget = gtk_check_button_new_with_label ("Kinetic scrolling");
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gtk_widget_set_hexpand (widget, TRUE);
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gtk_box_append (GTK_BOX (cntl), widget);
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g_signal_connect (G_OBJECT (widget), "toggled",
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G_CALLBACK (kinetic_scrolling_changed), swindow);
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gtk_widget_show (window);
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/* Popover */
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popover = gtk_popover_new ();
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widget = gtk_menu_button_new ();
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gtk_menu_button_set_popover (GTK_MENU_BUTTON (widget), popover);
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gtk_menu_button_set_label (GTK_MENU_BUTTON (widget), "Popover");
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gtk_box_append (GTK_BOX (cntl), widget);
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vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 6);
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gtk_popover_set_child (GTK_POPOVER (popover), vbox);
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/* Popover's scrolled window */
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swindow = gtk_scrolled_window_new ();
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gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (swindow),
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GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
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gtk_box_append (GTK_BOX (vbox), swindow);
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/* Listbox */
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listbox = gtk_list_box_new ();
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gtk_scrolled_window_set_child (GTK_SCROLLED_WINDOW (swindow), listbox);
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/* Min content */
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hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 2);
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widget = gtk_label_new ("min-content-width");
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gtk_widget_set_hexpand (widget, TRUE);
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gtk_box_append (GTK_BOX (hbox), widget);
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widget = gtk_spin_button_new_with_range (0.0, 150.0, 10.0);
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gtk_widget_set_hexpand (widget, TRUE);
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gtk_box_append (GTK_BOX (hbox), widget);
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g_object_bind_property (gtk_spin_button_get_adjustment (GTK_SPIN_BUTTON (widget)),
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"value",
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swindow,
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"min-content-width",
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G_BINDING_DEFAULT | G_BINDING_SYNC_CREATE);
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widget = gtk_label_new ("min-content-height");
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gtk_widget_set_hexpand (widget, TRUE);
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gtk_box_append (GTK_BOX (hbox), widget);
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widget = gtk_spin_button_new_with_range (0.0, 150.0, 10.0);
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gtk_widget_set_hexpand (widget, TRUE);
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gtk_box_append (GTK_BOX (hbox), widget);
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gtk_box_append (GTK_BOX (vbox), hbox);
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g_object_bind_property (gtk_spin_button_get_adjustment (GTK_SPIN_BUTTON (widget)),
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"value",
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swindow,
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"min-content-height",
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G_BINDING_DEFAULT | G_BINDING_SYNC_CREATE);
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/* Max content */
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hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 2);
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widget = gtk_label_new ("max-content-width");
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gtk_widget_set_hexpand (widget, TRUE);
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gtk_box_append (GTK_BOX (hbox), widget);
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widget = gtk_spin_button_new_with_range (250.0, 1000.0, 10.0);
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gtk_widget_set_hexpand (widget, TRUE);
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gtk_box_append (GTK_BOX (hbox), widget);
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g_object_bind_property (gtk_spin_button_get_adjustment (GTK_SPIN_BUTTON (widget)),
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"value",
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swindow,
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"max-content-width",
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G_BINDING_DEFAULT | G_BINDING_SYNC_CREATE);
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widget = gtk_label_new ("max-content-height");
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gtk_widget_set_hexpand (widget, TRUE);
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gtk_box_append (GTK_BOX (hbox), widget);
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widget = gtk_spin_button_new_with_range (250.0, 1000.0, 10.0);
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gtk_widget_set_hexpand (widget, TRUE);
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gtk_box_append (GTK_BOX (hbox), widget);
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gtk_box_append (GTK_BOX (vbox), hbox);
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g_object_bind_property (gtk_spin_button_get_adjustment (GTK_SPIN_BUTTON (widget)),
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"value",
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swindow,
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"max-content-height",
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G_BINDING_DEFAULT | G_BINDING_SYNC_CREATE);
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/* Add and Remove buttons */
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hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 2);
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widget = gtk_button_new_with_label ("Remove");
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gtk_widget_set_hexpand (widget, TRUE);
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gtk_box_append (GTK_BOX (hbox), widget);
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g_signal_connect (widget, "clicked",
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G_CALLBACK (remove_row), listbox);
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widget = gtk_button_new_with_label ("Add");
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gtk_widget_set_hexpand (widget, TRUE);
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gtk_box_append (GTK_BOX (hbox), widget);
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gtk_box_append (GTK_BOX (vbox), hbox);
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g_signal_connect (widget, "clicked",
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G_CALLBACK (add_row), listbox);
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}
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int
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main (int argc, char *argv[])
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{
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gtk_init ();
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scrollable_policy ();
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while (TRUE)
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g_main_context_iteration (NULL, TRUE);
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return 0;
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}
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