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92 lines
2.8 KiB
C
92 lines
2.8 KiB
C
/* Overlay/Interactive Overlay
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*
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* Shows widgets in static positions over a main widget.
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*
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* The overlayed widgets can be interactive controls such
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* as the entry in this example, or just decorative, like
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* the big blue label.
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*/
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#include <gtk/gtk.h>
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static void
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do_number (GtkButton *button, GtkEntry *entry)
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{
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gtk_editable_set_text (GTK_EDITABLE (entry), gtk_button_get_label (button));
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}
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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 *overlay;
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GtkWidget *grid;
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GtkWidget *button;
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GtkWidget *vbox;
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GtkWidget *label;
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GtkWidget *entry;
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int i, j;
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char *text;
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window = gtk_window_new ();
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gtk_window_set_default_size (GTK_WINDOW (window), 500, 510);
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gtk_window_set_title (GTK_WINDOW (window), "Interactive Overlay");
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overlay = gtk_overlay_new ();
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grid = gtk_grid_new ();
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gtk_overlay_set_child (GTK_OVERLAY (overlay), grid);
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entry = gtk_entry_new ();
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for (j = 0; j < 5; j++)
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{
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for (i = 0; i < 5; i++)
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{
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text = g_strdup_printf ("%d", 5*j + i);
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button = gtk_button_new_with_label (text);
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g_free (text);
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gtk_widget_set_hexpand (button, TRUE);
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gtk_widget_set_vexpand (button, TRUE);
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g_signal_connect (button, "clicked", G_CALLBACK (do_number), entry);
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gtk_grid_attach (GTK_GRID (grid), button, i, j, 1, 1);
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}
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}
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vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 10);
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gtk_widget_set_can_target (vbox, FALSE);
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gtk_overlay_add_overlay (GTK_OVERLAY (overlay), vbox);
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gtk_widget_set_halign (vbox, GTK_ALIGN_CENTER);
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gtk_widget_set_valign (vbox, GTK_ALIGN_START);
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label = gtk_label_new ("<span foreground='blue' weight='ultrabold' font='40'>Numbers</span>");
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gtk_label_set_use_markup (GTK_LABEL (label), TRUE);
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gtk_widget_set_can_target (label, FALSE);
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gtk_widget_set_margin_top (label, 8);
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gtk_widget_set_margin_bottom (label, 8);
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gtk_box_append (GTK_BOX (vbox), label);
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vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 10);
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gtk_overlay_add_overlay (GTK_OVERLAY (overlay), vbox);
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gtk_widget_set_halign (vbox, GTK_ALIGN_CENTER);
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gtk_widget_set_valign (vbox, GTK_ALIGN_CENTER);
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gtk_entry_set_placeholder_text (GTK_ENTRY (entry), "Your Lucky Number");
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gtk_widget_set_margin_top (entry, 8);
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gtk_widget_set_margin_bottom (entry, 8);
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gtk_box_append (GTK_BOX (vbox), entry);
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gtk_window_set_child (GTK_WINDOW (window), overlay);
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g_object_add_weak_pointer (G_OBJECT (window), (gpointer *)&window);
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}
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if (!gtk_widget_get_visible (window))
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gtk_widget_show (window);
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else
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gtk_window_destroy (GTK_WINDOW (window));
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return window;
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}
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