#include "soundview.h"

#include "sound.h"
#include <Log.h>

#include <QResizeEvent>

SoundView::SoundView(QWidget* parent) : QGraphicsView(parent) {
	setScene(&scene);

	redraw();
}

SoundView::~SoundView() {
	delete samples;
}

void SoundView::loadFile(const std::string& file) {
	samples = Sound::instance().openFile(file);
}

void SoundView::redraw() {
	//Log::debug << "redraw SoundView";
	scene.clear();

	scene.setBackgroundBrush(QBrush(Qt::GlobalColor::black));
	scene.addRect(0, 0, width()-4, height()-4, QPen(Qt::green));

	uint32_t h = scene.height()-4;

	//Log::info << "scene Size: " << scene.width() << " " << scene.height() << " " << width() << " " << height();

	// red center line
	scene.addLine(0, h/2, scene.width()-4, h/2, QPen(Qt::red));

	// cursor
	if(samples) {
		drawCursor(currentPosition, QPen(Qt::blue));
		drawCursor(startPos, QPen(Qt::yellow));
		drawCursor(endPos == 0 ? samples->getLength() : endPos, QPen(Qt::yellow));

		/*
		for(uint32_t x = 0; x < width(); ++x) {
			float s = samples->readSample(x);
			scene.addLine(x, h/2, x, s*h, QPen(Qt::white));
			//Log::info << "Line: " << x << " " << h/2;
		} */
	}
}

void SoundView::paintEvent(QPaintEvent* event) {
	QGraphicsView::paintEvent(event);

	redraw();
}

void SoundView::resizeEvent(QResizeEvent* event) {
	QGraphicsView::resizeEvent(event);

	if(samples) {
		samples->setWidth(event->size().width());
	}
}

void SoundView::updatePosition(unsigned long newpos) {
	currentPosition = newpos;
	update();
}

void SoundView::updateStartPosition(unsigned long newpos) {
	startPos = newpos;
	update();
}

void SoundView::updateEndPosition(unsigned long newpos) {
	endPos = newpos;
	update();
}

void SoundView::drawCursor(uint64_t pos, QPen pen) {
	uint32_t cursorXpos = (pos * (scene.width()-4)) / samples->getLength();
	scene.addLine(cursorXpos, 0, cursorXpos, scene.height() -4, pen);
}