WebLabel src

weblabel.cpp

#include "weblabel.h"

#include <QtWebKit/QWebFrame>
#include <QtWebKit/QWebSettings>

#include <QtGui/QPainter>

WebKitLabel::WebKitLabel(const QString& text, QWidget* parent)
	: QFrame(parent)
	, m_webPage(new QWebPage(this))
{
	m_webPage->setView(this);
	connect(m_webPage, SIGNAL(linkClicked(QUrl)),
	        this, SLOT(handleLinkClick(QUrl)));
	connect(m_webPage, SIGNAL(linkHovered(QString, QString, QString)),
	        this, SLOT(handleLinkHover(QString)));

	//m_webPage->mainFrame()->setScrollBarPolicy(Qt::Horizontal, Qt::ScrollBarAlwaysOff);
	m_webPage->mainFrame()->setScrollBarPolicy(Qt::Vertical, Qt::ScrollBarAlwaysOff);

	updatePalette();
	updateFonts();

	setText(text);
}

void WebKitLabel::updatePalette()
{
	QPalette palette = this->palette();
	palette.setBrush(QPalette::Base, Qt::transparent);
	m_webPage->setPalette(palette);
}

void WebKitLabel::updateFonts()
{
	QWebSettings* settings = m_webPage->settings();
	settings->setFontFamily(QWebSettings::StandardFont, font().family());
	settings->setFontSize(QWebSettings::DefaultFontSize, font().pointSize());
}

void WebKitLabel::setText(const QString& text)
{
	m_webPage->mainFrame()->setHtml(text);
	m_mainElement = m_webPage->mainFrame()->findFirstElement("body");
	m_mainElement.setStyleProperty("margin", "0");
	m_mainElement.setStyleProperty("padding", "0");

	updateGeometry();
}

QString WebKitLabel::text() const
{
	return m_webPage->mainFrame()->toHtml();
}

void WebKitLabel::paintEvent(QPaintEvent* event)
{
	QFrame::paintEvent(event);

	QPainter painter(this);
	m_webPage->mainFrame()->render(&painter);
}

void WebKitLabel::resizeEvent(QResizeEvent*)
{
	m_webPage->setViewportSize(size());
}

QSize WebKitLabel::sizeHint() const
{
	return m_mainElement.geometry().size();
}

QSize WebKitLabel::minimumSizeHint() const
{
	return sizeHint();
}

void WebKitLabel::handleLinkClick(const QUrl& url)
{
	emit linkActivated(url.toString());
}

void WebKitLabel::handleLinkHover(const QString& link)
{
	emit linkHovered(link);
}

weblabel.h

#pragma once

#include <QtGui/QFrame>
#include <QtWebKit/QWebElement>
#include <QtWebKit/QWebPage>

class WebKitLabel : public QFrame
{
	Q_OBJECT

	public:
		WebKitLabel(const QString& text, QWidget* parent = 0);

		void setText(const QString& text);
		QString text() const;

		virtual QSize sizeHint() const;
		virtual QSize minimumSizeHint() const;

	Q_SIGNALS:
		void linkActivated(const QString& link);
		void linkHovered(const QString& link);

	protected:
		virtual void paintEvent(QPaintEvent* event);
		virtual void resizeEvent(QResizeEvent* event);


	private Q_SLOTS:
		void handleLinkClick(const QUrl& url);
		void handleLinkHover(const QString& link);

	private:
		void updatePalette();
		void updateFonts();

		QWebPage* m_webPage;
		QWebElement m_mainElement;
};