// STEP 4
// Creation of a manager, a view, and a graphic object
// Add an exit callback and a selection interactor
// Add many rectangles of different colors, add another view and an accelerator
// Add a timer to animate an ellipse

#include <ilviews/manager/manager.h>
#include <ilviews/graphics/rectangl.h>
#include <ilviews/graphics/ellipse.h>
#include <ilviews/manager/selinter.h>
#include <stdlib.h>



static void Quit(IlvView* view, IlvAny)
{
	delete view->getDisplay();;
	IlvExit(0);
}

static void QuitAccel(IlvManager* mgr, IlvView* view, IlvEvent& event, IlvAny userArg)
{
	IlvDisplay* display = mgr->getDisplay();
	delete display;
	IlvExit(0);
}

static void KillView(IlvView* view, IlvAny userArg)
{
	delete view;
}

static void CreateView(IlvManager* mgr, IlvView* view, IlvEvent& event, IlvAny userArg)
{
	// Get the coordinates of the double click event
	IlvPoint mousePosition;
	event.getGLocation(mousePosition);
	IlvView* newView = new IlvView(mgr->getDisplay(), "NewView", "Additional View",
		                           IlvRect(mousePosition.x(), mousePosition.y(), 300,200));
	mgr->addView(newView);
	newView->setDestroyCallback(KillView);
}

static void AnimateEllipse(IlvTimer* timer, IlvAny userArg)
{
	static dx = 10;
	static dy = 10;

	IlvManager* manager = (IlvManager*)userArg;
	IlvFilledEllipse* mobile = (IlvFilledEllipse*)manager->getObject("MovingEllipse");
	if (!mobile)
		return;

	IlvRect bbox;
	mobile->boundingBox(bbox);
	if ((bbox.x() < 0) || (bbox.x() > 1000))
		dx = -dx;
	if ((bbox.y() < 0) || (bbox.y() > 1000))
		dy = -dy;

	manager->translateObject(mobile, dx, dy);
}

static void stopTimer(IlvManager* mgr, IlvView* view, IlvEvent& event, IlvAny userArg)
{
	IlvTimer* timer = (IlvTimer*)userArg;
	timer->suspend();
}

static void runTimer(IlvManager* mgr, IlvView* view, IlvEvent& event, IlvAny userArg)
{
	IlvTimer* timer = (IlvTimer*)userArg;
	timer->run();
}

int main(int argc, char** argv)
{
	
	// Creation of the Display
	IlvDisplay* display = new IlvDisplay("EvalKit1");
	// Creation of the Manager
	IlvManager* manager = new IlvManager(display);
	// Creation of the first view
	IlvView* view = new IlvView(display, "View1", "Main View - Step 4", IlvRect(0,0,600,400));
	// Attach the view to the manager
	manager->addView(view);

	// Add a selection interactor so that the rectangle can be selected, moved, resized
	// and destroyed
	// Creation of the interactor
	IlvSelectInteractor* selector = new IlvSelectInteractor(manager, view);
	// Set the interactor on the main view
	// Every object displayed in this view will be selectable, moveable, resizable
	manager->setInteractor(selector, view);

	// Add an user-defined accelerator to quit the application
	manager->addAccelerator(QuitAccel, IlvKeyDown, 'q');

	// Add another accelerator to create a new view
	manager->addAccelerator(CreateView, IlvDoubleClick, IlvLeftButton);

	// Creation of the colors
	IlvColor* color[4];
	color[0] = display->getColor("Red");
	color[1] = display->getColor("Green");
	color[2] = display->getColor("Blue");
	color[3] = display->getColor("Yellow");

	// Creation of 50 filled rectangles
	for (IlvUInt i=0; i < 50; i++)
	{
		IlvPos x = rand() % 1000;
		IlvPos y = rand() % 1000;
		IlvDim w = rand() % 100;
		IlvDim h = rand() % 100;
		IlvFilledRectangle* rectangle = new IlvFilledRectangle(display, IlvRect(x,y,w,h));
		rectangle->setForeground(color[i%4]);
		int layer = i % 4;
		manager->addObject(rectangle, IlvFalse, layer);
	}

	// Creation of the moving ellipse on the top layer
	IlvPos x = rand() % 1000;
	IlvPos y = rand() % 1000;
	IlvFilledEllipse* mobile = new IlvFilledEllipse(display, IlvRect(x,y,30,30));
	mobile->setForeground(display->getColor("White"));
	manager->addObject(mobile, IlvFalse, 4);
	// Give a name to the ellipse object
	manager->setObjectName(mobile, "MovingEllipse");

	// Creation of the timer to animate it
	IlvTimer* timer = new IlvTimer(display, 0, 50, AnimateEllipse, manager);
	timer->run();

	// Add 2 accelerators to manage the timer
	manager->addAccelerator(stopTimer, IlvKeyDown, 's', 0, timer);
	manager->addAccelerator(runTimer, IlvKeyDown, 'r', 0, timer);

	// Add an exit callback so that the exit button is valid
	view->setDestroyCallback(Quit);
	// Change the zooming factor of the view so that all the objects are visible
	manager->fitTransformerToContents(view);

	// Run the event loop
	IlvMainLoop();
	return 0;
}