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livetrax/libs/canvas/test/gtk_viewport.cc

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#include <iostream>
#include <gtkmm.h>
#include "canvas/canvas.h"
#include "canvas/rectangle.h"
using namespace std;
using namespace ArdourCanvas;
Gtk::Adjustment* hadj;
Gtk::Adjustment* vadj;
void
left_clicked ()
{
hadj->set_value (hadj->get_value() - 64);
}
void
right_clicked ()
{
hadj->set_value (hadj->get_value() + 64);
}
int main (int argc, char* argv[])
{
Gtk::Main kit (argc, argv);
Gtk::Window window;
window.set_title ("Hello world");
GtkCanvas canvas;
Rectangle a (canvas.root(), Rect (64, 64, 128, 128));
a.set_outline_color (0xff0000aa);
Rectangle b (canvas.root(), Rect (64, 64, 128, 128));
b.set_position (Duple (256, 256));
b.set_outline_width (4);
b.set_outline_color (0x00ff00ff);
Gtk::HBox button_box;
Gtk::Button left ("Left");
left.signal_clicked().connect (sigc::ptr_fun (&left_clicked));
button_box.pack_start (left);
Gtk::Button right ("Right");
right.signal_clicked().connect (sigc::ptr_fun (&right_clicked));
button_box.pack_start (right);
hadj = new Gtk::Adjustment (0, 0, 1e3);
vadj = new Gtk::Adjustment (0, 0, 1e3);
Gtk::Viewport viewport (*hadj, *vadj);
viewport.add (canvas);
Gtk::VBox overall_box;
overall_box.pack_start (viewport);
overall_box.pack_start (button_box, false, false);
window.add (overall_box);
canvas.show ();
window.show_all ();
Gtk::Main::run (window);
return 0;
}