#include "MapView2D.h"

#include <QPainter>
#include <QOpenGLFunctions>
#include <QMouseEvent>
#include <QKeyEvent>

#include <iostream>

#include "model/MapModelElement.h"
#include "model/MapModel.h"

MapView2D::MapView2D(QWidget* parent) : QOpenGLWidget(parent) {

	// openGL params
	QSurfaceFormat format;
	format.setDepthBufferSize(24);
	format.setStencilBufferSize(8);
	format.setSamples(1);
//	format.setVersion(3, 2);
	format.setProfile(QSurfaceFormat::CoreProfile);
	setFormat(format);

	// receive mouse-move even when mouse is not down
	setMouseTracking(true);
	setFocusPolicy(Qt::StrongFocus);

	// defaults
	s.setScale(5);

}

void MapView2D::paintGL() {

	QOpenGLFunctions *f = QOpenGLContext::currentContext()->functions();
	f->glClear(GL_COLOR_BUFFER_BIT);

	QPainter qp(this);
	Painter p(s, &qp, width(), height());
	s.setScreenSize(width(), height());

	// background tools
	tools.paintBefore(this, p);

	// render all visible elements
	qp.setRenderHint( QPainter::Antialiasing, true );
	for (MapModelElement* el : getModel()->getVisibleElements()) {
		if (el->getMV2D()) {el->getMV2D()->paint(p);}
	}
	qp.setRenderHint( QPainter::Antialiasing, false );

	// foreground tools
	tools.paintAfter(this, p);

}

void MapView2D::initializeGL() {

	QOpenGLFunctions *f = QOpenGLContext::currentContext()->functions();
	f->glClearColor(1.0f, 1.0f, 1.0f, 1.0f);

}

void MapView2D::resizeGL() {
	// TODO ?
}


void MapView2D::keyPressEvent(QKeyEvent *e) {
	tools.keyPressEvent(this, e);
	update();
}

void MapView2D::wheelEvent(QWheelEvent* e) {
	tools.wheelEvent(this, e);
	update();
}

void MapView2D::mousePressEvent(QMouseEvent* e) {
	tools.mousePressEvent(this, e);
	update();
}

void MapView2D::mouseMoveEvent(QMouseEvent* e) {
	tools.mouseMoveEvent(this, e);
	update();
}

void MapView2D::mouseReleaseEvent(QMouseEvent* e) {
	tools.mouseReleaseEvent(this, e);
	update();
}