QWebView实现浏览器的框架

基于QWebView实现简单的浏览器编程框架示例
Qt5
这个示例，还解决了网页中二级链接点击无效的问题。
下面配上完整的工程源码，包括.pro文件
mainwindow.ui



dialog.ui



mainwindow.h#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>
#include <QtWebKit/QtWebKit>
#include <QWebView>
#include <QUrl>
#include <QProgressBar> //使用进度条
#include <QFile>
#include <QMessageBox>
#include <QDebug>
#include <QWebFrame>
#include <QAction>
#include <QList>

namespace Ui {
class MainWindow;
}

class MainWindow : public QMainWindow
{
Q_OBJECT

public:
explicit MainWindow(QWidget *parent = 0);
~MainWindow();

private slots:
void setUrlSlot(QUrl); //网页更改修改url输入框
void settitleSlot(QString); //网页更改修改标题
void browserWebSlot(); //LineEdit回车刷新网页
void deleteprogressbarSlot(bool); //进度条结束后状态栏显示Load Finish 5秒
void sourceCodeSlot(); //网页显示源代码
void setMainpageSlot(); //设置主页
void saveUrl(QString); //保存浏览过的网页地址
void testSlot(const QUrl &);

private:
Ui::MainWindow *ui;
QProgressBar *progressbar;

QAction *viewsourcecodeAction;
QAction *setmainpageAction;

QList<QUrl> url;

void initMainPage(); //浏览器初始化
};

#endif // MAINWINDOW_H
mainwindow.cpp#include "mainwindow.h"
#include "ui_mainwindow.h"
#include "dialog.h"

MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this);
viewsourcecodeAction = new QAction ("source", this);
setmainpageAction = new QAction ("main", this);
ui->menuBar->addAction (viewsourcecodeAction);
ui->menuBar->addAction (setmainpageAction);
//
this->progressbar = new QProgressBar;
ui->statusBar->addWidget(progressbar);
this->initMainPage();
// 激活二级连接
ui->webView->page()->setLinkDelegationPolicy(QWebPage::DelegateAllLinks);

connect(ui->webView, SIGNAL(urlChanged(QUrl)), this, SLOT(setUrlSlot(QUrl)));
connect(ui->webView, SIGNAL(titleChanged(QString)), this, SLOT(settitleSlot(QString)));
connect(ui->lineEdit, SIGNAL(returnPressed()), this, SLOT(browserWebSlot()));
connect(ui->webView, SIGNAL(loadProgress(int)), this->progressbar, SLOT(setValue(int)));
connect(ui->webView, SIGNAL(loadFinished(bool)), this, SLOT(deleteprogressbarSlot(bool)));
connect(viewsourcecodeAction, SIGNAL(triggered()), this, SLOT(sourceCodeSlot()));
connect(setmainpageAction, SIGNAL(triggered()), this, SLOT(setMainpageSlot()));
connect(ui->lineEdit, SIGNAL(textChanged(QString)), this, SLOT(saveUrl(QString)));
// 连接二级链接和槽 用于打开二级连接
connect(ui->webView, SIGNAL(linkClicked(const QUrl &)), this, SLOT(testSlot(const QUrl &)));
}

MainWindow::~MainWindow()
{
delete ui;
}

//网页更改修改url输入框
void MainWindow::setUrlSlot(QUrl url)
{
ui->lineEdit->setText(url.toString());
}

//网页更改修改标题
void MainWindow::settitleSlot(QString title)
{
this->setWindowTitle(title);
}

//LineEdit回车刷新网页
void MainWindow::browserWebSlot()
{
ui->webView->load(QUrl(ui->lineEdit->text()));
}

//进度条结束后状态栏显示Load Finish 5秒
void MainWindow::deleteprogressbarSlot(bool ok)
{
if(ok)
{
delete this->progressbar;
this->progressbar = NULL;
ui->statusBar->showMessage("Load Finish", 5*1000);
}
}

//网页显示源代码
void MainWindow::sourceCodeSlot()
{
QString context = ui->webView->page()->currentFrame()->toHtml();
// this->hide();
Dialog *dialog = new Dialog;
dialog->setWebSource(context);
dialog->show();
}

//设置主页
void MainWindow::setMainpageSlot()
{
QString filename = "mainpage.ini";
QFile *file = new QFile;
file->setFileName(filename);
bool ok = file->open(QIODevice::WriteOnly);
if(ok)
{
QTextStream out(file);
out<<"mainpage="+ui->lineEdit->text();
file->close();
delete file;
file = NULL;

QMessageBox::information(this, "information", "set main page success");
}
else
{
qDebug()<<"set fail";
}
}

void MainWindow::saveUrl(QString netAddr)
{
url.append(QUrl(netAddr));
}

void MainWindow::testSlot(const QUrl & url)
{
ui->webView->load(url);
}

//浏览器初始化
void MainWindow::initMainPage()
{
QString filename = "mainpage.ini";
QFile *file = new QFile;
file->setFileName(filename);
bool ok = file->open(QIODevice::ReadOnly);
if(ok)
{
QTextStream in(file);
ui->webView->load(QUrl(in.readLine().split("=").at(1)));
file->close();
delete file;
file = NULL;
}
else
{
QMessageBox::information(this, "Error Message", "init main page error:"+file->errorString());
return;
}
}
dialog.h#ifndef DIALOG_H
#define DIALOG_H

#include <QDialog>
#include <QAbstractButton>

namespace Ui {
class Dialog;
}

class Dialog : public QDialog
{
Q_OBJECT

public:
explicit Dialog(QWidget *parent = 0);
~Dialog();
void setWebSource(QString); //设置文本内容

private slots:
void on_buttonBox_clicked(QAbstractButton *button);

private:
Ui::Dialog *ui;
};

#endif // DIALOG_H

dialog.cpp#include "dialog.h"
#include "ui_dialog.h"
#include <QDebug>

Dialog::Dialog(QWidget *parent) :
QDialog(parent),
ui(new Ui::Dialog)
{
ui->setupUi(this);
}

Dialog::~Dialog()
{
delete ui;
}

void Dialog::setWebSource(QString context)
{
ui->textEdit->setPlainText(context);
}

void Dialog::on_buttonBox_clicked(QAbstractButton *button)
{
delete ui;
}
main.cpp#include <QApplication>
#include "mainwindow.h"
#include <QTextCodec>

int main(int argc, char *argv[])
{
QApplication a(argc, argv);
// QTextCodec::setCodecForCStrings(QTextCodec::codecForLocale());
MainWindow w;
w.show();

return a.exec();
}demo.pro#-------------------------------------------------
#
# Project created by QtCreator 2018-03-19T08:31:18
#
#-------------------------------------------------

QT += core gui webkit webkitwidgets

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

TARGET = demo
TEMPLATE = app

SOURCES += main.cpp\
mainwindow.cpp \
dialog.cpp

HEADERS += mainwindow.h \
dialog.h

FORMS += mainwindow.ui \
dialog.ui