217 lines
7.0 KiB
C
217 lines
7.0 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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label_flip_changed (GtkComboBox *combo_box,
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GtkLabel *label)
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{
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gint active = gtk_combo_box_get_active (combo_box);
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if (active == 0)
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gtk_label_set_angle (label, 0.0);
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else
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gtk_label_set_angle (label, 90.0);
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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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scrollable_policy (void)
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{
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GtkWidget *window, *swindow, *hbox, *vbox, *frame, *cntl;
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GtkWidget *viewport, *label, *expander, *widget;
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window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
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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_container_set_border_width (GTK_CONTAINER (window), 8);
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gtk_widget_show (vbox);
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gtk_widget_show (hbox);
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gtk_container_add (GTK_CONTAINER (window), hbox);
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gtk_box_pack_start (GTK_BOX (hbox), vbox, FALSE, FALSE, 0);
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frame = gtk_frame_new ("Scrolled Window");
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gtk_widget_show (frame);
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gtk_box_pack_start (GTK_BOX (hbox), frame, TRUE, TRUE, 0);
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swindow = gtk_scrolled_window_new (NULL, NULL);
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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_widget_show (swindow);
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gtk_container_add (GTK_CONTAINER (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_line_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_widget_show (label);
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gtk_widget_show (viewport);
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gtk_container_add (GTK_CONTAINER (viewport), label);
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gtk_container_add (GTK_CONTAINER (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_widget_show (cntl);
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gtk_widget_show (expander);
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gtk_container_add (GTK_CONTAINER (expander), cntl);
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gtk_box_pack_start (GTK_BOX (vbox), expander, FALSE, FALSE, 0);
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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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gtk_widget_show (hbox);
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widget = gtk_label_new ("hscroll-policy");
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gtk_widget_show (widget);
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gtk_box_pack_start (GTK_BOX (hbox), widget, TRUE, TRUE, 0);
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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_show (widget);
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gtk_box_pack_start (GTK_BOX (hbox), widget, TRUE, TRUE, 0);
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gtk_box_pack_start (GTK_BOX (cntl), hbox, FALSE, FALSE, 0);
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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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gtk_widget_show (hbox);
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widget = gtk_label_new ("vscroll-policy");
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gtk_widget_show (widget);
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gtk_box_pack_start (GTK_BOX (hbox), widget, TRUE, TRUE, 0);
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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_show (widget);
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gtk_box_pack_start (GTK_BOX (hbox), widget, TRUE, TRUE, 0);
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gtk_box_pack_start (GTK_BOX (cntl), hbox, FALSE, FALSE, 0);
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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_show (widget);
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gtk_box_pack_start (GTK_BOX (hbox), widget, TRUE, TRUE, 0);
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widget = gtk_spin_button_new_with_range (100.0, 1000.0, 10.0);
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gtk_box_pack_start (GTK_BOX (hbox), widget, TRUE, TRUE, 0);
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gtk_box_pack_start (GTK_BOX (cntl), hbox, FALSE, FALSE, 0);
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gtk_widget_show (widget);
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gtk_widget_show (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_show (widget);
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gtk_box_pack_start (GTK_BOX (hbox), widget, TRUE, TRUE, 0);
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widget = gtk_spin_button_new_with_range (100.0, 1000.0, 10.0);
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gtk_box_pack_start (GTK_BOX (hbox), widget, TRUE, TRUE, 0);
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gtk_box_pack_start (GTK_BOX (cntl), hbox, FALSE, FALSE, 0);
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gtk_widget_show (widget);
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gtk_widget_show (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 Label orientation control here */
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hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 2);
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gtk_widget_show (hbox);
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widget = gtk_label_new ("label-flip");
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gtk_widget_show (widget);
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gtk_box_pack_start (GTK_BOX (hbox), widget, TRUE, TRUE, 0);
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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), "Horizontal");
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gtk_combo_box_text_append_text (GTK_COMBO_BOX_TEXT (widget), "Vertical");
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gtk_combo_box_set_active (GTK_COMBO_BOX (widget), 0);
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gtk_widget_show (widget);
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gtk_box_pack_start (GTK_BOX (hbox), widget, TRUE, TRUE, 0);
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gtk_box_pack_start (GTK_BOX (cntl), hbox, FALSE, FALSE, 0);
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g_signal_connect (G_OBJECT (widget), "changed",
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G_CALLBACK (label_flip_changed), label);
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gtk_widget_show (window);
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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 (NULL, NULL);
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scrollable_policy ();
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gtk_main ();
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return 0;
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}
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