lemon-0.x: src/work/peter/canvas-test.cc@5331168bbb18

     1 // This example was started by Guillaume Laurent.

     2 // It has become a place to dump code that tests parts of the

     3 // gnomemm canvas code. Little thought has been given to the

     4 // actual on-screen output.

     6 #include <libgnomecanvasmm.h>

     7 #include <libgnomecanvasmm/polygon.h>

     8 #include <iostream>

    10 class CanvasExample : public Gnome::Canvas::CanvasAA

    11 {

    12 	typedef Gnome::Canvas::CanvasAA Parent;

    14 public:

    15 	CanvasExample();

    16 	virtual ~CanvasExample();

    18 private:

    19 	bool event_handler(GdkEvent* e, bool b);

    20 	Gnome::Canvas::Points coos;

    21 	Gnome::Art::Point * wp;

    22 	Gnome::Canvas::Ellipse ** nodes;

    23 	Gnome::Canvas::Polygon * sides;

    24 	Gnome::Canvas::Group triangle;

    25 };

    27 bool CanvasExample::event_handler(GdkEvent* e, bool b)

    28 {

    29 	bool isbutton=true;

    30 	switch(e->type)

    31 	{

    32 		case GDK_BUTTON_PRESS: printf("Node is pressed!\n"); break;

    33 		//case GDK_BUTTON_RELEASE: printf("Node is released!\n"); break;

    34 		default: isbutton=false; break;

    35 	}

    36 	if(isbutton)

    37 	{

    38 		//(get_item_at(e->button.x, e->button.y))->move(5,5);

    39 		(get_item_at(e->button.x, e->button.y))->hide();

    40 	}

    41 }

    43 CanvasExample::CanvasExample():triangle(*(root()), 0, 0)

    44 {

    45 	double ax=100;

    46 	double ay=100;

    47 	double bx=-100;

    48 	double by=100;

    49 	double cx=0;

    50 	double cy=-100;

    51 	coos.push_back(Gnome::Art::Point(100, 100));

    52 	coos.push_back(Gnome::Art::Point(-100, 100));

    53 	coos.push_back(Gnome::Art::Point(0, -100));

    55 	sides=new Gnome::Canvas::Polygon(triangle, coos);

    56 	*sides << Gnome::Canvas::Properties::outline_color("green");

    57 	sides->property_width_pixels().set_value(10);

    59 	nodes=new ( Gnome::Canvas::Ellipse * ) [4];

    61 	for(int i=0; i<3;i++)

    62 	{

    63 		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);

    64 		*(nodes[i]) << Gnome::Canvas::Properties::fill_color("blue");

    65 		*(nodes[i]) << Gnome::Canvas::Properties::outline_color("black");

    66 		(nodes[i])->signal_event().connect(sigc::bind(sigc::mem_fun(*this, &CanvasExample::event_handler),true));

    67 	}

    69 	wp=new Gnome::Art::Point((ax+bx+cx)/3,(ay+by+cy)/3);

    71 	nodes[3]= new Gnome::Canvas::Ellipse(triangle, wp->get_x()-20, wp->get_y()-20, wp->get_x()+20, wp->get_y()+20);

    72 	*(nodes[3]) << Gnome::Canvas::Properties::fill_color("blue");

    73 	*(nodes[3]) << Gnome::Canvas::Properties::outline_color("black");

    76 }

    78 CanvasExample::~CanvasExample()

    79 {

    80 }

    82 //MainWin:

    84 class MainWin : public Gtk::Window

    85 {

    86 public:

    87 	MainWin(const std::string& title);

    89 protected:

    90 	//Member widgets:

    91 	CanvasExample m_canvas;

    92 };

    94 MainWin::MainWin(const std::string& title)

    95 {

    96 	set_title (title);

    97 	add(m_canvas);

    98 	set_default_size(900,600);

   100 	show_all();

   101 }

   103 //main():

   105 int main(int argc, char *argv[])

   106 {

   107 	Gnome::Canvas::init();

   108 	Gtk::Main app(argc, argv);

   110 	MainWin mainwin("Gnome::Canvas Example");

   111 	app.run(mainwin);

   113 	return 0;

   114 }

author	alpar
	Wed, 16 Mar 2005 07:56:25 +0000
changeset 1218	5331168bbb18
child 1221	6706c788ebb5
permissions	-rw-r--r--