#pragma execution_character_set("utf-8")

#include "imageswitch.h"
#include "qpainter.h"
#include "qdebug.h"

ImageSwitch::ImageSwitch(QWidget* parent) : QWidget(parent)
{
	isChecked = false;
	setButtonStyle(ButtonStyle_1);
	this->setFixedSize(sizeHint());
}

void ImageSwitch::mousePressEvent(QMouseEvent*)
{
	imgFile = isChecked ? imgOffFile : imgOnFile;
	isChecked = !isChecked;
	this->update();
	emit clicked();
}

void ImageSwitch::paintEvent(QPaintEvent*)
{
	QPainter painter(this);
	painter.setRenderHints(QPainter::SmoothPixmapTransform);
	QImage img(imgFile);
	img = img.scaled(this->size(), Qt::KeepAspectRatio, Qt::SmoothTransformation);

	//按照比例自动居中绘制
	int pixX = rect().center().x() - img.width() / 2;
	int pixY = rect().center().y() - img.height() / 2;
	QPoint point(pixX, pixY);
	painter.drawImage(point, img);
}

bool ImageSwitch::getChecked() const
{
	return isChecked;
}

ImageSwitch::ButtonStyle ImageSwitch::getButtonStyle() const
{
	return this->buttonStyle;
}

QSize ImageSwitch::sizeHint() const
{
	return {100, 50};
}

QSize ImageSwitch::minimumSizeHint() const
{
	return sizeHint();
}

void ImageSwitch::setChecked(bool value)
{
	if (this->isChecked != value) {
		this->isChecked = value;
		imgFile = isChecked ? imgOnFile : imgOffFile;
		this->update();
	}
}

void ImageSwitch::setButtonStyle(const ImageSwitch::ButtonStyle& style)
{
	if (this->buttonStyle != style) {
		this->buttonStyle = style;

		if (buttonStyle == ButtonStyle_1) {
			imgOffFile = ":/icons/imageswitch/btncheckoff1.png";
			imgOnFile = ":/icons/imageswitch/btncheckon1.png";
			this->resize(sizeHint());
		}
		else if (buttonStyle == ButtonStyle_2) {
			imgOffFile = ":/icons/imageswitch/btncheckoff2.png";
			imgOnFile = ":/icons/imageswitch/btncheckon2.png";
			this->resize(sizeHint());
		}
		else if (buttonStyle == ButtonStyle_3) {
			imgOffFile = ":/icons/imageswitch/btncheckoff3.png";
			imgOnFile = ":/icons/imageswitch/btncheckon3.png";
			this->resize(sizeHint());
		}

		imgFile = isChecked ? imgOnFile : imgOffFile;
		setChecked(isChecked);
		this->update();
		updateGeometry();
	}
}