1204a850f3
While we normally try to avoid whitespace fixes, the gtk-demo code is shown as exemplary, so it should be in good shape, formatting-wise.
182 lines
6.6 KiB
C
182 lines
6.6 KiB
C
/* Overlay
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*
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* Stack widgets in static positions over a main widget
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*/
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#include <gtk/gtk.h>
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GtkWidget *
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do_overlay (GtkWidget *do_widget)
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{
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static GtkWidget *window = NULL;
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if (!window)
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{
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GtkWidget *view;
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GtkWidget *sw;
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GtkWidget *overlay;
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GtkWidget *entry;
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GtkWidget *label;
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window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
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gtk_window_set_screen (GTK_WINDOW (window),
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gtk_widget_get_screen (do_widget));
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gtk_window_set_default_size (GTK_WINDOW (window),
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450, 450);
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g_signal_connect (window, "destroy",
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G_CALLBACK (gtk_widget_destroyed), &window);
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gtk_window_set_title (GTK_WINDOW (window), "Overlay");
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gtk_container_set_border_width (GTK_CONTAINER (window), 0);
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view = gtk_text_view_new ();
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sw = gtk_scrolled_window_new (NULL, NULL);
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gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (sw),
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GTK_POLICY_AUTOMATIC,
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GTK_POLICY_AUTOMATIC);
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gtk_container_add (GTK_CONTAINER (sw), view);
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overlay = gtk_overlay_new ();
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gtk_container_add (GTK_CONTAINER (overlay), sw);
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gtk_container_add (GTK_CONTAINER (window), overlay);
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entry = gtk_entry_new ();
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gtk_overlay_add_overlay (GTK_OVERLAY (overlay), entry);
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gtk_widget_set_halign (entry, GTK_ALIGN_END);
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gtk_widget_set_valign (entry, GTK_ALIGN_END);
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label = gtk_label_new ("Hello world");
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gtk_widget_set_halign (label, GTK_ALIGN_END);
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gtk_widget_set_valign (label, GTK_ALIGN_END);
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gtk_overlay_add_overlay (GTK_OVERLAY (overlay), label);
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gtk_widget_set_margin_left (label, 20);
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gtk_widget_set_margin_right (label, 20);
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gtk_widget_set_margin_top (label, 5);
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gtk_widget_set_margin_bottom (label, 5);
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entry = gtk_entry_new ();
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gtk_widget_set_halign (entry, GTK_ALIGN_START);
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gtk_widget_set_valign (entry, GTK_ALIGN_END);
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gtk_overlay_add_overlay (GTK_OVERLAY (overlay), entry);
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label = gtk_label_new ("Hello world");
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gtk_widget_set_halign (label, GTK_ALIGN_START);
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gtk_widget_set_valign (label, GTK_ALIGN_END);
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gtk_overlay_add_overlay (GTK_OVERLAY (overlay), label);
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gtk_widget_set_margin_left (label, 20);
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gtk_widget_set_margin_right (label, 20);
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gtk_widget_set_margin_top (label, 5);
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gtk_widget_set_margin_bottom (label, 5);
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entry = gtk_entry_new ();
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gtk_widget_set_halign (entry, GTK_ALIGN_END);
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gtk_widget_set_valign (entry, GTK_ALIGN_START);
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gtk_overlay_add_overlay (GTK_OVERLAY (overlay), entry);
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label = gtk_label_new ("Hello world");
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gtk_widget_set_halign (label, GTK_ALIGN_END);
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gtk_widget_set_valign (label, GTK_ALIGN_START);
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gtk_overlay_add_overlay (GTK_OVERLAY (overlay), label);
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gtk_widget_set_margin_left (label, 20);
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gtk_widget_set_margin_right (label, 20);
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gtk_widget_set_margin_top (label, 5);
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gtk_widget_set_margin_bottom (label, 5);
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entry = gtk_entry_new ();
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gtk_widget_set_halign (entry, GTK_ALIGN_START);
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gtk_widget_set_valign (entry, GTK_ALIGN_START);
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gtk_overlay_add_overlay (GTK_OVERLAY (overlay), entry);
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label = gtk_label_new ("Hello world");
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gtk_widget_set_halign (label, GTK_ALIGN_START);
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gtk_widget_set_valign (label, GTK_ALIGN_START);
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gtk_overlay_add_overlay (GTK_OVERLAY (overlay), label);
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gtk_widget_set_margin_left (label, 20);
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gtk_widget_set_margin_right (label, 20);
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gtk_widget_set_margin_top (label, 5);
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gtk_widget_set_margin_bottom (label, 5);
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entry = gtk_entry_new ();
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gtk_widget_set_halign (entry, GTK_ALIGN_END);
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gtk_widget_set_valign (entry, GTK_ALIGN_CENTER);
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gtk_overlay_add_overlay (GTK_OVERLAY (overlay), entry);
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label = gtk_label_new ("Hello world");
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gtk_widget_set_halign (label, GTK_ALIGN_END);
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gtk_widget_set_valign (label, GTK_ALIGN_CENTER);
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gtk_overlay_add_overlay (GTK_OVERLAY (overlay), label);
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gtk_widget_set_margin_left (label, 20);
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gtk_widget_set_margin_right (label, 20);
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gtk_widget_set_margin_top (label, 5);
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gtk_widget_set_margin_bottom (label, 5);
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entry = gtk_entry_new ();
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gtk_widget_set_halign (entry, GTK_ALIGN_START);
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gtk_widget_set_valign (entry, GTK_ALIGN_CENTER);
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gtk_overlay_add_overlay (GTK_OVERLAY (overlay), entry);
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label = gtk_label_new ("Hello world");
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gtk_widget_set_halign (label, GTK_ALIGN_START);
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gtk_widget_set_valign (label, GTK_ALIGN_CENTER);
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gtk_overlay_add_overlay (GTK_OVERLAY (overlay), label);
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gtk_widget_set_margin_left (label, 20);
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gtk_widget_set_margin_right (label, 20);
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gtk_widget_set_margin_top (label, 5);
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gtk_widget_set_margin_bottom (label, 5);
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entry = gtk_entry_new ();
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gtk_widget_set_halign (entry, GTK_ALIGN_CENTER);
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gtk_widget_set_valign (entry, GTK_ALIGN_START);
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gtk_overlay_add_overlay (GTK_OVERLAY (overlay), entry);
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label = gtk_label_new ("Hello world");
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gtk_widget_set_halign (label, GTK_ALIGN_CENTER);
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gtk_widget_set_valign (label, GTK_ALIGN_START);
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gtk_overlay_add_overlay (GTK_OVERLAY (overlay), label);
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gtk_widget_set_margin_left (label, 20);
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gtk_widget_set_margin_right (label, 20);
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gtk_widget_set_margin_top (label, 5);
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gtk_widget_set_margin_bottom (label, 5);
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entry = gtk_entry_new ();
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gtk_widget_set_halign (entry, GTK_ALIGN_CENTER);
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gtk_widget_set_valign (entry, GTK_ALIGN_END);
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gtk_overlay_add_overlay (GTK_OVERLAY (overlay), entry);
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label = gtk_label_new ("Hello world");
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gtk_widget_set_halign (label, GTK_ALIGN_CENTER);
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gtk_widget_set_valign (label, GTK_ALIGN_END);
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gtk_overlay_add_overlay (GTK_OVERLAY (overlay), label);
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gtk_widget_set_margin_left (label, 10);
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gtk_widget_set_margin_right (label, 10);
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gtk_widget_set_margin_top (label, 5);
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gtk_widget_set_margin_bottom (label, 5);
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entry = gtk_entry_new ();
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gtk_widget_set_halign (entry, GTK_ALIGN_CENTER);
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gtk_widget_set_valign (entry, GTK_ALIGN_CENTER);
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gtk_overlay_add_overlay (GTK_OVERLAY (overlay), entry);
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label = gtk_label_new ("Hello world");
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gtk_widget_set_halign (label, GTK_ALIGN_CENTER);
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gtk_widget_set_valign (label, GTK_ALIGN_CENTER);
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gtk_overlay_add_overlay (GTK_OVERLAY (overlay), label);
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gtk_widget_show_all (overlay);
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}
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if (!gtk_widget_get_visible (window))
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{
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gtk_widget_show (window);
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}
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else
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{
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gtk_widget_destroy (window);
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window = NULL;
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}
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return window;
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}
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