hegyi@1212: // This example was started by Guillaume Laurent.
hegyi@1212: // It has become a place to dump code that tests parts of the
hegyi@1212: // gnomemm canvas code. Little thought has been given to the
hegyi@1212: // actual on-screen output.
hegyi@1212: 
hegyi@1212: #include <libgnomecanvasmm.h>
hegyi@1212: #include <libgnomecanvasmm/polygon.h>
hegyi@1212: #include <iostream>
hegyi@1212: 
hegyi@1212: class CanvasExample : public Gnome::Canvas::CanvasAA
hegyi@1212: {
hegyi@1212: 	typedef Gnome::Canvas::CanvasAA Parent;
hegyi@1212: 
hegyi@1212: public:
hegyi@1212: 	CanvasExample();
hegyi@1212: 	virtual ~CanvasExample();
hegyi@1212: 
hegyi@1212: private:
hegyi@1212: 	bool event_handler(GdkEvent* e, bool b);
hegyi@1212: 	Gnome::Canvas::Points coos;
hegyi@1212: 	Gnome::Art::Point * wp;
hegyi@1212: 	Gnome::Canvas::Ellipse ** nodes;
hegyi@1212: 	Gnome::Canvas::Polygon * sides;
hegyi@1212: 	Gnome::Canvas::Group triangle;
hegyi@1212: };
hegyi@1212: 
hegyi@1212: bool CanvasExample::event_handler(GdkEvent* e, bool b)
hegyi@1212: {
hegyi@1212: 	bool isbutton=true;
hegyi@1212: 	switch(e->type)
hegyi@1212: 	{
hegyi@1212: 		case GDK_BUTTON_PRESS: printf("Node is pressed!\n"); break;
hegyi@1212: 		//case GDK_BUTTON_RELEASE: printf("Node is released!\n"); break;
hegyi@1212: 		default: isbutton=false; break;
hegyi@1212: 	}
hegyi@1212: 	if(isbutton)
hegyi@1212: 	{
hegyi@1212: 		//(get_item_at(e->button.x, e->button.y))->move(5,5);
hegyi@1212: 		(get_item_at(e->button.x, e->button.y))->hide();
hegyi@1212: 	}
hegyi@1212: }
hegyi@1212: 
hegyi@1212: CanvasExample::CanvasExample():triangle(*(root()), 0, 0)
hegyi@1212: {
hegyi@1212: 	double ax=100;
hegyi@1212: 	double ay=100;
hegyi@1212: 	double bx=-100;
hegyi@1212: 	double by=100;
hegyi@1212: 	double cx=0;
hegyi@1212: 	double cy=-100;
hegyi@1212: 	coos.push_back(Gnome::Art::Point(100, 100));
hegyi@1212: 	coos.push_back(Gnome::Art::Point(-100, 100));
hegyi@1212: 	coos.push_back(Gnome::Art::Point(0, -100));
hegyi@1212: 
hegyi@1212: 	sides=new Gnome::Canvas::Polygon(triangle, coos);
hegyi@1212: 	*sides << Gnome::Canvas::Properties::outline_color("green");
hegyi@1212: 	sides->property_width_pixels().set_value(10);
hegyi@1212: 
hegyi@1212: 	nodes=new ( Gnome::Canvas::Ellipse * ) [4];
hegyi@1212: 
hegyi@1212: 	for(int i=0; i<3;i++)
hegyi@1212: 	{
hegyi@1212: 		nodes[i]= new Gnome::Canvas::Ellipse(triangle, coos[i].get_x()-20, coos[i].get_y()-20, coos[i].get_x()+20, coos[i].get_y()+20);
hegyi@1212: 		*(nodes[i]) << Gnome::Canvas::Properties::fill_color("blue");
hegyi@1212: 		*(nodes[i]) << Gnome::Canvas::Properties::outline_color("black");
hegyi@1212: 		(nodes[i])->signal_event().connect(sigc::bind(sigc::mem_fun(*this, &CanvasExample::event_handler),true));
hegyi@1212: 	}
hegyi@1212: 
hegyi@1212: 	wp=new Gnome::Art::Point((ax+bx+cx)/3,(ay+by+cy)/3);
hegyi@1212: 
hegyi@1212: 	nodes[3]= new Gnome::Canvas::Ellipse(triangle, wp->get_x()-20, wp->get_y()-20, wp->get_x()+20, wp->get_y()+20);
hegyi@1212: 	*(nodes[3]) << Gnome::Canvas::Properties::fill_color("blue");
hegyi@1212: 	*(nodes[3]) << Gnome::Canvas::Properties::outline_color("black");
hegyi@1212: 
hegyi@1212: 
hegyi@1212: }
hegyi@1212: 
hegyi@1212: CanvasExample::~CanvasExample()
hegyi@1212: {
hegyi@1212: }
hegyi@1212: 
hegyi@1212: //MainWin:
hegyi@1212: 
hegyi@1212: class MainWin : public Gtk::Window
hegyi@1212: {
hegyi@1212: public:
hegyi@1212: 	MainWin(const std::string& title);
hegyi@1212: 
hegyi@1212: protected:
hegyi@1212: 	//Member widgets:
hegyi@1212: 	CanvasExample m_canvas;
hegyi@1212: };
hegyi@1212: 
hegyi@1212: MainWin::MainWin(const std::string& title)
hegyi@1212: {
hegyi@1212: 	set_title (title);
hegyi@1212: 	add(m_canvas);
hegyi@1212: 	set_default_size(900,600);
hegyi@1212: 
hegyi@1212: 	show_all();
hegyi@1212: }
hegyi@1212: 
hegyi@1212: //main():
hegyi@1212: 
hegyi@1212: int main(int argc, char *argv[])
hegyi@1212: {
hegyi@1212: 	Gnome::Canvas::init();
hegyi@1212: 	Gtk::Main app(argc, argv);
hegyi@1212: 
hegyi@1212: 	MainWin mainwin("Gnome::Canvas Example");
hegyi@1212: 	app.run(mainwin);
hegyi@1212: 
hegyi@1212: 	return 0;
hegyi@1212: }