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/* Overlay
*
* Stack widgets in static positions over a main widget.
*/
#include "gtkmm.h"
class Example_Overlay : public Gtk::Window
{
public:
Example_Overlay();
virtual ~Example_Overlay();
protected:
// Widgets
Gtk::TextView m_text_view;
Gtk::ScrolledWindow m_scrolled_window;
Gtk::Entry m_entries[9];
Gtk::Label m_labels[9];
// Containers
Gtk::Overlay m_overlay;
private:
void configure_entries_and_labels();
};
//Called by DemoWindow;
Gtk::Window* do_overlay()
{
return new Example_Overlay();
}
Example_Overlay::Example_Overlay()
{
// Window properties
set_default_size(450, 450);
set_title("Overlay");
set_border_width(0);
// Main text view
m_scrolled_window.set_policy(Gtk::POLICY_AUTOMATIC, Gtk::POLICY_AUTOMATIC);
m_scrolled_window.add(m_text_view);
// Entries and labels
configure_entries_and_labels();
// Layout
m_overlay.add(m_scrolled_window);
add(m_overlay);
show_all_children();
}
Example_Overlay::~Example_Overlay()
{
}
void Example_Overlay::configure_entries_and_labels()
{
// We first set common attributes, and
// add widgets to the overlay
for (int i =0; i < 9; ++i)
{
m_labels[i].set_text("Hello world");
m_labels[i].set_margin_start(20);
m_labels[i].set_margin_end(20);
m_labels[i].set_margin_top(5);
m_labels[i].set_margin_bottom(5);
m_overlay.add_overlay(m_entries[i]);
m_overlay.add_overlay(m_labels[i]);
}
// Then we set align attributes
m_entries[0].set_halign(Gtk::ALIGN_END);
m_entries[0].set_valign(Gtk::ALIGN_END);
m_labels[0].set_halign(Gtk::ALIGN_END);
m_labels[0].set_valign(Gtk::ALIGN_END);
m_entries[1].set_halign(Gtk::ALIGN_START);
m_entries[1].set_valign(Gtk::ALIGN_END);
m_labels[1].set_halign(Gtk::ALIGN_START);
m_labels[1].set_valign(Gtk::ALIGN_END);
m_entries[2].set_halign(Gtk::ALIGN_END);
m_entries[2].set_valign(Gtk::ALIGN_START);
m_labels[2].set_halign(Gtk::ALIGN_END);
m_labels[2].set_valign(Gtk::ALIGN_START);
m_entries[3].set_halign(Gtk::ALIGN_START);
m_entries[3].set_valign(Gtk::ALIGN_START);
m_labels[3].set_halign(Gtk::ALIGN_START);
m_labels[3].set_valign(Gtk::ALIGN_START);
m_entries[4].set_halign(Gtk::ALIGN_END);
m_entries[4].set_valign(Gtk::ALIGN_CENTER);
m_labels[4].set_halign(Gtk::ALIGN_END);
m_labels[4].set_valign(Gtk::ALIGN_CENTER);
m_entries[5].set_halign(Gtk::ALIGN_START);
m_entries[5].set_valign(Gtk::ALIGN_CENTER);
m_labels[5].set_halign(Gtk::ALIGN_START);
m_labels[5].set_valign(Gtk::ALIGN_CENTER);
m_entries[6].set_halign(Gtk::ALIGN_CENTER);
m_entries[6].set_valign(Gtk::ALIGN_START);
m_labels[6].set_halign(Gtk::ALIGN_CENTER);
m_labels[6].set_valign(Gtk::ALIGN_START);
m_entries[7].set_halign(Gtk::ALIGN_CENTER);
m_entries[7].set_valign(Gtk::ALIGN_END);
m_labels[7].set_halign(Gtk::ALIGN_CENTER);
m_labels[7].set_valign(Gtk::ALIGN_END);
m_entries[8].set_halign(Gtk::ALIGN_CENTER);
m_entries[8].set_valign(Gtk::ALIGN_CENTER);
m_labels[8].set_halign(Gtk::ALIGN_CENTER);
m_labels[8].set_valign(Gtk::ALIGN_CENTER);
}
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