在Qt5.8中使用pdf.js [英] Using pdf.js with Qt5.8

问题描述

我正在尝试在Qt5.8中创建一个pdf查看器.我知道poppler是Qt的选择，但是我想使用pdf.js做到这一点.我不知道如何在pdf.js中嵌入pdf.js Qt5.8.我看过pdf.js的hello world文档，但没有帮助.请帮我. 预先感谢.

I am trying to make a pdf viewer in Qt5.8 .I know that poppler is a choice for Qt but I want to do this using pdf.js .I dont know how to embed pdf.js with Qt5.8. I have seen the hello world documentation of pdf.js but it didn't helped. Please help me. Thanks in advance .

推荐答案

如果要使用pdf.js，基本思想是要有一些小部件来显示HTML-似乎QWebEngineView(使用了Chromium)可以完成此工作，因为它只需最少的代码即可完成您的第一个实现.

The basic idea would be to have some widget to display HTML if you want to make use of pdf.js - it seems that QWebEngineView (makes use of Chromium) could do the job as it takes a minimum of code to get your first implementation done.

在您的计算机上已经安装了pdf.js并通过QT Creator创建了一个简约的gui应用程序(QT Widgets项目)，您可以使用以下代码获得基本信息:

Having an installation of pdf.js on your computer and a minimalistic gui application (QT Widgets project) prepared with your QT Creator, you could use the following code to have the basics:

#include "mainwindow.h"
#include <QApplication>
#include <QWebEngineView>

static QString pathToPDFjs = QString("file:///path-to/pdfjs-1.8.170-dist/web/viewer.html");

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    MainWindow win;
    QWebEngineView *view;
    QString pdfFileURL;

    //you could parse a widget to get the file name
    pdfFileURL = QString("file:///path-to-your/file.pdf");

    //init the view and attach it to the ui
    view = new QWebEngineView();
    win.setCentralWidget(view);
    win.show();

    //auto-load feature in pdf.js, pass file=filename as parameter
    view->load(QUrl::fromUserInput(pathToPDFjs + QString("?file=") + pdfFileURL));
    view->show();

    return app.exec();
}

从那里开始，您可以在用户界面中添加其他功能. 您甚至可以对pdf.js的安装进行修改(如果需要).

From there on you can add extra functionality to your user interface. You could even add modifications to your installation of pdf.js (if needed).

如果您需要在pdf.js上调用JavaScript，则可以使用视图的页面(a QWebEnginePage)，而页面又可以runJavaScript.

If you'd need to call JavaScript on your pdf.js, you can make use of the view's page (a QWebEnginePage) which in turn can runJavaScript.

这篇关于在Qt5.8中使用pdf.js的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！