[qt]图像处理程序

#include <QUrl> #include <QList> #include <QtGui/QPixmap> #include <QtGui/QDragEnterEvent> #include <QtGui/QDropEvent> #include "mainwindow.h" #include "ui_mainwindow.h" #include <QFileDialog> #include <math.h> #include <iostream> #include<sstream> #include "binarymorphology.h" #include"graymorphology.h" #include<QString> using namespace std; MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui::MainWindow) { ui->setupUi(this); ui->scrollArea->setWidget(ui->label_2); ui->scrollArea_2->setWidget(ui->label_12); QObject::connect(ui->horizontalSlider, SIGNAL(valueChanged(int)), ui->spinBox, SLOT(setValue(int))); QObject::connect(ui->spinBox, SIGNAL(valueChanged(int)), ui->horizontalSlider, SLOT(setValue(int))); QObject::connect(ui->horizontalSlider_2, SIGNAL(valueChanged(int)), ui->spinBox_13, SLOT(setValue(int))); QObject::connect(ui->spinBox_13, SIGNAL(valueChanged(int)), ui->horizontalSlider_2, SLOT(setValue(int))); QObject::connect(ui->horizontalSlider_3, SIGNAL(valueChanged(int)), ui->spinBox_14, SLOT(setValue(int))); QObject::connect(ui->spinBox_14, SIGNAL(valueChanged(int)), ui->horizontalSlider_3, SLOT(setValue(int))); QObject::connect(ui->horizontalSlider_4, SIGNAL(valueChanged(int)), ui->spinBox_15, SLOT(setValue(int))); QObject::connect(ui->spinBox_15, SIGNAL(valueChanged(int)), ui->horizontalSlider_4, SLOT(setValue(int))); initialHistogram(); // connect(ui->actionOpen, SIGNAL(triggered()), this, SLOT(openImage())); ui->label_2->installEventFilter(this); ui->label_2->setAcceptDrops(true); // [[1]]: 使label可接受拖放操作 ui->label_2->setMouseTracking(true); ui->label_12->installEventFilter(this); ui->label_12->setAcceptDrops(true); // [[1]]: 使label可接受拖放操作 // parent->setMouseTracking(true); //me(); this->setMouseTracking(true); mw=new MouseWindow(); // m_pStatus = new QStatusBar(); // setStatusBar(m_pStatus); // m_pStatus->showMessage("application init ok!"); // this->ui->label_19->setText("ccccc"); } MainWindow::~MainWindow() { delete ui; } bool MainWindow::eventFilter(QObject *watched, QEvent *event) { if (watched == ui->label_2) { if (event->type() == QEvent::DragEnter) { // [[2]]: 当拖放时鼠标进入label时, label接受拖放的动作 QDragEnterEvent *dee = dynamic_cast<QDragEnterEvent *>(event); dee->acceptProposedAction(); return true; } else if (event->type() == QEvent::Drop) { // [[3]]: 当放操作发生后, 取得拖放的数据 QDropEvent *de = dynamic_cast<QDropEvent *>(event); QList<QUrl> urls = de->mimeData()->urls(); if (urls.isEmpty()) { return true; } QString path = urls.first().toLocalFile(); // [[4]]: 在label上显示拖放的图片 QImage loadedImage(path); // QImage对I/O优化过, QPixmap对显示优化 if (!loadedImage.isNull()) { this->ui->label_2->setPixmap(QPixmap::fromImage(loadedImage)); this->sourceimage=loadedImage; this->currentimage=loadedImage; this->tempimage=loadedImage; //QString s=""; //s=QString::number(currentimage.width())+"×"+QString::number(currentimage.height()); //this->ui->label_20->setText(s); drawHistogram(); } //else if(event->type()==QEvent::MouseMove) //{ // QMouseEvent *de2 = dynamic_cast<QMouseMoveEvent *>(event); // } // else if(event->type()==QEvent::MouseButtonPress) // { // QMouseEvent *d=dynamic_cast<QMouseEvent *>(event); //QPoint pos = d->pos(); // this->ui->label_19->setText("bbb"); // this->ui->label_19->setText("aaa"+QString("x:%1,y:%2").arg(pos.x()).arg(pos.y())); // } return true; } } if (watched == ui->label_12) { if (event->type() == QEvent::DragEnter) { // [[2]]: 当拖放时鼠标进入label时, label接受拖放的动作 QDragEnterEvent *dee = dynamic_cast<QDragEnterEvent *>(event); dee->acceptProposedAction(); return true; } else if (event->type() == QEvent::Drop) { // [[3]]: 当放操作发生后, 取得拖放的数据 QDropEvent *de = dynamic_cast<QDropEvent *>(event); QList<QUrl> urls = de->mimeData()->urls(); if (urls.isEmpty()) { return true; } QString path = urls.first().toLocalFile(); // [[4]]: 在label上显示拖放的图片 QImage loadedImage(path); // QImage对I/O优化过, QPixmap对显示优化 if (!loadedImage.isNull()) { this->addedimage=loadedImage; this->ui->label_12->setPixmap(QPixmap::fromImage(loadedImage)); this->addedtempimage=loadedImage; } return true; } } return QWidget::eventFilter(watched, event); } void MainWindow::openImage() { QString fileName = QFileDialog::getOpenFileName(this, tr("Open Image"), QDir::currentPath(),"Images(*.jpg *.png *.bmp *.gif)"); if (!fileName.isEmpty()){ QImage loadedImage; if (!loadedImage.load(fileName)) return; this->ui->label_2->setPixmap(QPixmap::fromImage(loadedImage)); this->sourceimage=loadedImage; this->currentimage=loadedImage; this->tempimage=loadedImage; drawHistogram(); } } void MainWindow::saveImage() { QString fileName = QFileDialog::getSaveFileName(this,tr("Save Image"), QDir::currentPath(),"Images(*.jpg *.png *.bmp *.gif)"); if(fileName.isEmpty()) { return; } else{ currentimage.save(fileName); } } void MainWindow::on_actionOpen_triggered() { openImage(); } void MainWindow::toGrayLevel(){ int m_H=this->currentimage.height(); int m_W=this->currentimage.width(); for(int y=0;y<m_H;y++) for(int x=0;x<m_W;x++) { int gray=qGray(this->currentimage.pixel(x,y)); QColor color(gray, gray, gray); currentimage.setPixel(x,y,color.rgb()); } this->ui->label_2->setPixmap(QPixmap::fromImage(currentimage)); } void MainWindow::on_pushButton_4_clicked() { toGrayLevel(); drawHistogram(); } void MainWindow::toBinary(int value) { int m_H=this->currentimage.height(); int m_W=this->currentimage.width(); for(int y=0;y<m_H;y++) for(int x=0;x<m_W;x++) { int gray=qGray(this->currentimage.pixel(x,y)); // sourceimage.pixel(x,y); if(gray>=value) gray=255; if(gray<value) gray=0; QColor color(gray, gray, gray); tempimage.setPixel(x,y,color.rgb()); } this->ui->label_2->setPixmap(QPixmap::fromImage(tempimage)); this->ui->pushButton_5->setEnabled(true); } void MainWindow::on_horizontalSlider_valueChanged(int value) { toBinary(value); } void MainWindow::on_pushButton_3_clicked() { this->ui->label_2->setPixmap(QPixmap::fromImage(sourceimage)); currentimage=sourceimage; drawHistogram(); } void MainWindow::initialHistogram() { QImage* histogram=new QImage(260,200,QImage::Format_ARGB32); QColor color(255, 255, 255); int m_H=histogram->height(); int m_W=histogram->width(); for(int y=0;y<m_H;y++) for(int x=0;x<m_W;x++) { histogram->setPixel(x,y,color.rgb());