#include "vmerge.h"
#include "ui_vmerge.h"
#include "qtoolbar.h"
#include "QVBoxLayout"
#include "QDir"
#include "QFileDialog"
#include "QDebug"
#include <QWheelEvent>
#include <QMenu>
#include <QPainter>
#include<QVector>
#include<QDesktopWidget>

VMerge::VMerge(QWidget *parent) :
    QWidget(parent),
    ui(new Ui::VMerge)
{
    ui->setupUi(this);

    //使用UI设计的Actions设计工具栏
    QToolBar* locToolBar = new QToolBar(tr("图片"),this); //创建工具栏
    locToolBar->addAction(ui->saveAction);
    connect (ui->saveAction,SIGNAL(triggered(bool)),this,SLOT(imageSave()));
    locToolBar->setToolButtonStyle(Qt::ToolButtonTextBesideIcon);
    QVBoxLayout *Layout = new QVBoxLayout();//图片合成主界面垂直布局
    Layout->addWidget(locToolBar); //设置工具栏和编辑器上下布局

    label1=new QLabel();
    label1->setStyleSheet("border:1px solid red;");
    label1->installEventFilter(this);//安装事件过滤器
    label2=new QLabel();
    label2->setStyleSheet("border:1px solid red;");
    label2->installEventFilter(this);//安装事件过滤器
    Layout->addWidget(label1);
    Layout->addWidget(label2);
    this->setLayout(Layout); //设置布局

}


void VMerge::imageSave(){


    QString filename1 = QFileDialog::getSaveFileName(this,tr("Save Image"),"",tr("Images (*.jpg)")); //选择路径
    QVector<QImage> vector1;
    QImage q1=label1->pixmap()->toImage();
    vector1.append(label1->pixmap()->scaled(1083, 1378, Qt::KeepAspectRatio, Qt::SmoothTransformation).toImage());
    vector1.append(label2->pixmap()->scaled(1083, 1378, Qt::KeepAspectRatio, Qt::SmoothTransformation).toImage());
    QImage q= MergeImageV(vector1,filename1);
}


VMerge::~VMerge()
{
    delete ui;
}

bool VMerge::eventFilter(QObject *obj, QEvent *event)
{
    if (obj == label1)//指定某个QLabel
    {
        if (event->type() == QEvent::MouseButtonPress)//mouse button pressed
        {
            QMouseEvent *mouseEvent = static_cast<QMouseEvent*>(event);
            if(mouseEvent->button() == Qt::LeftButton)
            {
                QString curPath=QDir::currentPath();//获取系统当前目录
                //获取应用程序的路径
                QString dlgTitle="选择一个文件"; //对话框标题
                QString filter="图片文件(*.jpg *.jpeg *.gif *.png)"; //文件过滤器
                QString LocalFileName=QFileDialog::getOpenFileName(this,dlgTitle,curPath,filter);
                QImage Image;
                Image.load(LocalFileName);
                double dpiX = QApplication::desktop()->physicalDpiX();
                double dpiY = QApplication::desktop()->physicalDpiY();
                int physicalX=(int)(dpiX*5.5/2.54+0.5f);
                int physicalY=(int)(dpiY*7/2.54+0.5f);
                QPixmap pixmap = QPixmap::fromImage(Image);
                QPixmap fitpixmap = pixmap.scaled(physicalX, physicalY, Qt::KeepAspectRatio, Qt::SmoothTransformation);  // 饱满填充
                //    label1->setScaledContents(true);
                label1->setAlignment(Qt::AlignCenter);
                label1->setPixmap(fitpixmap);
                //                qDebug() << pixmap.width()<<pixmap.height();
                //                fitpixmap = pixmap.scaled(307, 389, Qt::KeepAspectRatio, Qt::SmoothTransformation);  // 饱满填充
                //                label2->setPixmap(fitpixmap);
                return true;
            }
            else
            {
                return false;
            }
        }
        else
        {
            return false;
        }
    }
    if (obj == label2)//指定某个QLabel
    {
        if (event->type() == QEvent::MouseButtonPress)//mouse button pressed
        {
            QMouseEvent *mouseEvent = static_cast<QMouseEvent*>(event);
            if(mouseEvent->button() == Qt::LeftButton)
            {
                QString curPath=QDir::currentPath();//获取系统当前目录
                //获取应用程序的路径
                QString dlgTitle="选择一个文件"; //对话框标题
                QString filter="图片文件(*.jpg *.jpeg *.gif *.png)"; //文件过滤器
                QString LocalFileName=QFileDialog::getOpenFileName(this,dlgTitle,curPath,filter);
                QImage Image;
                Image.load(LocalFileName);
                double dpiX = QApplication::desktop()->physicalDpiX();
                double dpiY = QApplication::desktop()->physicalDpiY();
                int physicalX=(int)(dpiX*5.5/2.54+0.5f);
                int physicalY=(int)(dpiY*7/2.54+0.5f);
                QPixmap pixmap = QPixmap::fromImage(Image);
                QPixmap fitpixmap = pixmap.scaled(physicalX, physicalY, Qt::KeepAspectRatio, Qt::SmoothTransformation);  // 饱满填充
                //    label1->setScaledContents(true);
                label2->setAlignment(Qt::AlignCenter);
                label2->setPixmap(fitpixmap);
                update();
                //                qDebug() << pixmap.width()<<pixmap.height();
                //                fitpixmap = pixmap.scaled(307, 389, Qt::KeepAspectRatio, Qt::SmoothTransformation);  // 饱满填充
                //                label2->setPixmap(fitpixmap);
                return true;
            }
            else
            {
                return false;
            }
        }
        else
        {
            return false;
        }
    }
}

QImage VMerge::MergeImageV(QVector<QImage>image, QString filename){
    int max_width = 0;
    int image_height=0;
    QVector <QImage > ::iterator it;
    for(it = image.begin();it!=image.end();++it)
    {
        int height = (*it).height();
        image_height += height;
        if((*it).width() > max_width)
        {
            max_width =(*it).width();
        }
    }

    QImage result_image_v(max_width,image_height+100,QImage::Format_RGB32);
    result_image_v.fill(Qt::white);
    QPainter painter_v;
    painter_v.begin(&result_image_v);
    int y_number=0;
    for(it = image.begin();it!=image.end();++it)
    {
        qDebug()<<y_number<<(*it).height();

        //只执行一次，绘制图片间隔
        if(y_number==0){
            painter_v.drawImage(0,y_number,(*it));
            y_number += (*it).height()+100;
        }else{
            painter_v.drawImage(0,y_number,(*it));
        }
    }
    painter_v.end();
    //	QString name = image_output_path_.append("/").append(merge_output_filename_).append(".").append(convert_format_);
    //	emit startConvertMove(1,1);
    result_image_v.save(filename,"jpg");
    return result_image_v;
}