#include "hmerge.h"
#include "ui_hmerge.h"
#include "qtoolbar.h"
#include "QVBoxLayout"
#include "QDir"
#include "QFileDialog"
#include "QDebug"
#include <QWheelEvent>
#include <QMenu>
#include <QPainter>
#include <QScrollArea>
#include<QVector>

#include<QDesktopWidget>

#include<QScreen>

HMerge::HMerge(QWidget *parent) :
    QWidget(parent),
    ui(new Ui::HMerge)
{

    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->imageOpen);
    connect (ui->imageOpen,SIGNAL(triggered(bool)),this,SLOT(imageOpen()));
    locToolBar->addAction(ui->saveAction);
    connect (ui->saveAction,SIGNAL(triggered(bool)),this,SLOT(imageSave()));
    locToolBar->setToolButtonStyle(Qt::ToolButtonTextBesideIcon);
    QVBoxLayout *Layout = new QVBoxLayout();//图片标注主界面垂直布局
    Layout->addWidget(locToolBar); //设置工具栏和编辑器上下布局
    QHBoxLayout *layout1=new QHBoxLayout();//工具栏下方水平布局，放入两个垂直布局
    QVBoxLayout *leftLayout=new QVBoxLayout();//工具栏下方左侧垂直布局
    label1=new QLabel(tr("1.5x1.9"));
    leftLayout->addStretch(1);
    leftLayout->addWidget(label1);
    leftLayout->addStretch(1);
    label2=new QLabel(tr("5.5x7"));
    QVBoxLayout *rightLayout=new QVBoxLayout();//工具栏下方右侧垂直布局
    //        label2->setStyleSheet("border:2px solid red;");
    //    label2->setPixmap(fitpixmap);
    rightLayout->addWidget(label2);
    layout1->addLayout(leftLayout);
    //    layout1->addStretch();
    layout1->addLayout(rightLayout);
    //    Layout->setContentsMargins(2,2,2,2); //减小边框的宽度
    //    Layout->setSpacing(2);
    Layout->addLayout(layout1);
    this->setLayout(Layout); //设置布局
}

void HMerge::imageOpen(){
    //    //选择单个文件
    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
    LocalFileName=QFileDialog::getOpenFileName(this,dlgTitle,curPath,filter);
    QImage Image;
    Image.load(LocalFileName);
    qDebug()<<Image.width()<<Image.height();
    double dpiX = QApplication::desktop()->physicalDpiX();
    double dpiY = QApplication::desktop()->physicalDpiY();
    int physicalX=(int)(dpiX*1.5/2.54+0.5f);
    int physicalY=(int)(dpiY*1.9/2.54+0.5f);
    qDebug()<<"aaa:"<<physicalX<<"bbb:"<<physicalY;
    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);
    int physicalX1=(int)(dpiX*5.5/2.54+0.5f);
    int physicalY1=(int)(dpiY*7/2.54+0.5f);
    qDebug()<<"aaa:"<<physicalX1<<"bbb:"<<physicalY1;
    fitpixmap = pixmap.scaled(physicalX1, physicalY1, Qt::KeepAspectRatio, Qt::SmoothTransformation);  // 饱满填充
    label2->setPixmap(fitpixmap);
    //    label2->setScaledContents(true);

    //    LocalFileName = QFileDialog::getOpenFileName(this, "Open Image", "./", tr("Images (*.png *.xpm *.jpg)"));

    QFile file(LocalFileName);
    if (!file.exists())
        return;
    //    ZoomValue = 1.0;
    //    XPtInterval = 0;
    //    YPtInterval = 0;
    update();

}

//合成图片
void HMerge::imageSave(){
    //    QImage resultImg = QImage(orginImg.width(), orginImg.height(), QImage::Format_RGB32);
    //    QPainter *painter = new QPainter(&resultImg);
    //    painter->drawImage(0, 0, leftImg);
    //    painter->drawImage(leftImg.width(), 0, rightImg);
    //    resultImg.save("flip.jpg");
    QString filename1 = QFileDialog::getSaveFileName(this,tr("保存图片"),"",tr("Images (*.jpg)")); //选择路径
    QVector<QImage> vector1;
    QImage q1,q2;
    q1.load(LocalFileName);
    vector1.append(q1);
    q2.load(LocalFileName);
    QPixmap pixmap = QPixmap::fromImage(q2);
    QPixmap fitpixmap = pixmap.scaled(1083, 1378, Qt::KeepAspectRatio, Qt::SmoothTransformation);  // 饱满填充
    vector1.append(fitpixmap.toImage());
    QImage q= MergeImageH(vector1,filename1);
}

HMerge::~HMerge()
{
    delete ui;
}
QImage HMerge::MergeImageH(QVector <QImage > image, QString filename)
{
    int image_width=0;
    int max_height = 0;
    QVector <QImage > ::iterator it;
    for(it = image.begin();it!=image.end();++it)
    {
        int width = (*it).width();
        image_width += width;
        qDebug()<<width<<(*it).height();
        if((*it).height()>max_height)
        {
            max_height =(*it).height();
        }
    }
    QImage result_image_h(image_width+300,max_height,QImage::Format_RGB32);
    result_image_h.fill(Qt::white);
    QPainter painter_h;
    painter_h.begin(&result_image_h);
    int x_number=0;
    for(it = image.begin();it!=image.end();++it)
    {
        if(x_number==0){//左侧图片绘制上下空白区域以及中间空白区域
            painter_h.drawImage(x_number,(*it).height(),(*it));
            x_number += (*it).width()+300;
        }else{
            painter_h.drawImage(x_number,0,(*it));
            //            x_number += (*it).width();
        }
    }
    painter_h.end();
    //    QString name = image_output_path_.append("/").append(merge_output_filename_).append(".").append(convert_format_);
    result_image_h.save(filename,"jpg");
    return result_image_h;
}