做一家网站费用,wordpress pc6,家居品牌策划公司,项目设计方案QWebEnginePage 是 Qt WebEngine 模块中的一个类#xff0c;它提供了用于处理网页内容的接口。如果你想要打印 QWebEnginePage 中的内容#xff0c;你可以使用 QPrinter 和 QPrintDialog 类来实现。
项目配置了 Qt WebEngine 模块#xff0c;并且在你的.pro文件中包含了相应…
QWebEnginePage 是 Qt WebEngine 模块中的一个类它提供了用于处理网页内容的接口。如果你想要打印 QWebEnginePage 中的内容你可以使用 QPrinter 和 QPrintDialog 类来实现。
项目配置了 Qt WebEngine 模块并且在你的.pro文件中包含了相应的配置
QT webenginewidgets
实现代码如下参考
printme « webenginewidgets « examples - qt/qtwebengine.git - Qt WebEngine
main.cpp
#include printhandler.h
#include QApplication
#include QShortcut
#include QWebEngineViewint main(int argc, char *argv[])
{QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);QApplication app(argc, argv);view.setUrl(QUrl(QStringLiteral(qrc:/index.html)));view.resize(1024, 750);view.show();PrintHandler handler;handler.setPage(view.page());auto printPreviewShortCut new QShortcut(QKeySequence(Qt::CTRL Qt::Key_P), view);auto printShortCut new QShortcut(QKeySequence(Qt::CTRL Qt::SHIFT Qt::Key_P), view);QObject::connect(printPreviewShortCut, QShortcut::activated, handler, PrintHandler::printPreview);QObject::connect(printShortCut, QShortcut::activated, handler, PrintHandler::print);return app.exec();
}printhandler.h
#ifndef PRINTHANDLER_H
#define PRINTHANDLER_H
#include qapplication.h
#include QObject
#include QWebEngineView
#include QPrinter
#include QPrintPreviewDialog
#include QEventLoop
#include QPrintDialog
#include QWidget
#include QMainWindow
#include QPrinterInfo
#include CustomWebEnginePage.h
#include qapplication.h
#include qtimer.h
class PrintHandler : public QObject
{Q_OBJECT
public:explicit PrintHandler(QString printName, QObject *parent nullptr);signals:public slots:public:void setPrintUrl(const QString url);void setPrintName(const QString name);void printPreview();void printDocument(QPrinter *printer);void print();
private://void print();
private:QString mPrinterName;CustomWebEnginePage* mPage;QString mUrl;bool mInPrintPreview;QTimer* waitTimer;
};#endif // PRINTHANDLER_Hprinthandler.cpp
#include printhandler.h
#include QDebug
PrintHandler::PrintHandler(QString printName,QObject *parent) : mPrinterName(printName),QObject(parent)
{mInPrintPreviewfalse;mPage new CustomWebEnginePage();waitTimer new QTimer();waitTimer-setInterval(500);waitTimer-setSingleShot(true);connect(waitTimer, QTimer::timeout, this, PrintHandler::print);connect(mPage, CustomWebEnginePage::loadFinished, waitTimer, static_castvoid(QTimer::*)()(QTimer::start));}void PrintHandler::setPrintUrl(const QString url)
{mUrl url;mPage-setUrl(url);
}void PrintHandler::printPreview()
{if (!mPage)return;if (mInPrintPreview)return;mInPrintPreview true;QPrinter printer;QPrintPreviewDialog preview(printer, mPage-view());connect(preview, QPrintPreviewDialog::paintRequested,this, PrintHandler::printDocument);preview.exec();mInPrintPreview false;
}void PrintHandler::printDocument(QPrinter *printer)
{QEventLoop loop;bool result;auto printPreview [](bool success) { result success; loop.quit(); };mPage-print(printer, std::move(printPreview));loop.exec();if (!result) {QPainter painter;if (painter.begin(printer)) {QFont font painter.font();font.setPixelSize(15);painter.setFont(font);painter.drawText(QPointF(10,25),QStringLiteral(Could not generate print preview.));painter.end();}}
}
void PrintHandler::setPrintName(const QString name)
{mPrinterName name;
}void PrintHandler::print()
{QStringList printerNameListQPrinterInfo::availablePrinterNames();foreach (QString printerStr, printerNameList){if(printerStr mPrinterName){QPrinter printer(QPrinter::HighResolution);printer.setOutputFormat(QPrinter::NativeFormat);printer.setPrinterName(printerStr);//打印界面/* QPrintDialog dialog(printer, mPage-view());if (dialog.exec() ! QDialog::Accepted)return;*/printDocument(printer);return;}}qDebug() not find printer;}对于https的url连接会出现你的连接不是专用连接报警需要跳过这个报警所以要继承QWebEnginePage做个类
CustomWebEnginePage.h
#pragma once#include QWebEnginePageclass CustomWebEnginePage : public QWebEnginePage
{Q_OBJECTpublic:CustomWebEnginePage();~CustomWebEnginePage();virtual bool certificateError(const QWebEngineCertificateError certificateError);
};CustomWebEnginePage.cpp
#include CustomWebEnginePage.hCustomWebEnginePage::CustomWebEnginePage()
{
}CustomWebEnginePage::~CustomWebEnginePage()
{
}bool CustomWebEnginePage::certificateError(const QWebEngineCertificateError certificateError)
{return true;
}
