Qt读取Pdf文件Demo

#include "mainwindow.h" #include "ui_mainwindow.h" #include "include/mupdf-qt.h" #include <QFileDialog> #include <QPixmap> MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui::MainWindow) { ui->setupUi(this); this->setWindowTitle(tr("灏夏星辰 - 打开pdf文件")); this->setWindowIcon(QIcon(":/new/prefix1/image.png")); ui->scrollArea->setFrameShape(QFrame::NoFrame); //设置滑动区域无边框 } MainWindow::~MainWindow() { delete ui; } void MainWindow::on_actionOpenPdf_triggered() { QString fileName = QFileDialog::getOpenFileName(this, tr("选择文件"), tr(""), tr("pdf文件 (*.pdf)")); if(fileName.isNull() || !fileName.contains(".pdf")) return; MuPDF::Document * document = MuPDF::loadDocument(fileName); //将pdf文件加载进Document QWidget * widget = new QWidget(this); QVBoxLayout *vboxLayout=new QVBoxLayout(); for(int i = 0; i < document->numPages(); i ++) { QLabel * label = new QLabel(this); QImage image = document->page(i)->renderImage(2.0, 2.0); //截取pdf文件中的相应图片 label->setPixmap(QPixmap::fromImage(image)); //将该图片放进label中 vboxLayout->addWidget(label); vboxLayout->setAlignment(widget,Qt::AlignCenter); } widget->setLayout(vboxLayout); ui->scrollArea->setWidget(widget); //设置widget }