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webpage.cpp
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webpage.cpp
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/*
This file is part of the PhantomJS project from Ofi Labs.
Copyright (C) 2011 Ariya Hidayat <ariya.hidayat@gmail.com>
Copyright (C) 2011 Ivan De Marino <ivan.de.marino@gmail.com>
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
* Neither the name of the <organization> nor the
names of its contributors may be used to endorse or promote products
derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "webpage.h"
#include <math.h>
#include <QApplication>
#include <QDesktopServices>
#include <QDateTime>
#include <QDir>
#include <QFileInfo>
#include <QKeyEvent>
#include <QMouseEvent>
#include <QNetworkAccessManager>
#include <QNetworkCookie>
#include <QNetworkRequest>
#include <QPainter>
#include <QPrinter>
#include <QWebHistory>
#include <QWebElement>
#include <QWebFrame>
#include <QWebPage>
#include <QWebInspector>
#include <QMapIterator>
#include <QBuffer>
#include <QDebug>
#include <QImageWriter>
#include <gifwriter.h>
#include "phantom.h"
#include "networkaccessmanager.h"
#include "utils.h"
#include "config.h"
#include "consts.h"
#include "callback.h"
#include "cookiejar.h"
// Ensure we have at least head and body.
#define BLANK_HTML "<html><head></head><body></body></html>"
#define CALLBACKS_OBJECT_NAME "_phantom"
#define INPAGE_CALL_NAME "window.callPhantom"
#define CALLBACKS_OBJECT_INJECTION INPAGE_CALL_NAME" = function() { return window."CALLBACKS_OBJECT_NAME".call.call(_phantom, Array.prototype.splice.call(arguments, 0)); };"
#define CALLBACKS_OBJECT_PRESENT "typeof(window."CALLBACKS_OBJECT_NAME") !== \"undefined\";"
/**
* @class CustomPage
*/
class CustomPage: public QWebPage
{
Q_OBJECT
public:
CustomPage(WebPage *parent = 0)
: QWebPage(parent)
, m_webPage(parent)
{
m_userAgent = QWebPage::userAgentForUrl(QUrl());
setForwardUnsupportedContent(true);
}
bool extension(Extension extension, const ExtensionOption* option, ExtensionReturn* output) {
Q_UNUSED(option);
if (extension == ChooseMultipleFilesExtension) {
static_cast<ChooseMultipleFilesExtensionReturn*>(output)->fileNames = QStringList(m_uploadFile);
return true;
} else {
return false;
}
}
public slots:
bool shouldInterruptJavaScript() {
QApplication::processEvents(QEventLoop::AllEvents, 42);
return false;
}
protected:
bool supportsExtension(Extension extension) const {
return extension == ChooseMultipleFilesExtension;
}
QString chooseFile(QWebFrame *originatingFrame, const QString &oldFile) {
Q_UNUSED(originatingFrame);
Q_UNUSED(oldFile);
return m_uploadFile;
}
void javaScriptAlert(QWebFrame *originatingFrame, const QString &msg) {
Q_UNUSED(originatingFrame);
emit m_webPage->javaScriptAlertSent(msg);
}
bool javaScriptConfirm(QWebFrame *originatingFrame, const QString &msg) {
Q_UNUSED(originatingFrame);
return m_webPage->javaScriptConfirm(msg);
}
bool javaScriptPrompt(QWebFrame *originatingFrame, const QString &msg, const QString &defaultValue, QString *result) {
Q_UNUSED(originatingFrame);
return m_webPage->javaScriptPrompt(msg, defaultValue, result);
}
void javaScriptConsoleMessage(const QString &message, int lineNumber, const QString &sourceID) {
Q_UNUSED(lineNumber);
Q_UNUSED(sourceID);
emit m_webPage->javaScriptConsoleMessageSent(message);
}
void javaScriptError(const QString &message, int lineNumber, const QString &sourceID, const QString &stack) {
Q_UNUSED(lineNumber);
Q_UNUSED(sourceID);
emit m_webPage->javaScriptErrorSent(message, stack);
}
QString userAgentForUrl(const QUrl &url) const {
Q_UNUSED(url);
return m_userAgent;
}
bool acceptNavigationRequest(QWebFrame *frame, const QNetworkRequest &request, QWebPage::NavigationType type) {
bool isMainFrame = (frame == m_webPage->m_mainFrame);
QString navigationType = "Undefined";
switch (type) {
case NavigationTypeLinkClicked:
navigationType = "LinkClicked";
break;
case NavigationTypeFormSubmitted:
navigationType = "FormSubmitted";
break;
case NavigationTypeBackOrForward:
navigationType = "BackOrForward";
break;
case NavigationTypeReload:
navigationType = "Reload";
break;
case NavigationTypeFormResubmitted:
navigationType = "FormResubmitted";
break;
case NavigationTypeOther:
navigationType = "Other";
break;
}
emit m_webPage->navigationRequested(
request.url(), //< Requested URL
navigationType, //< Navigation Type
!m_webPage->navigationLocked(), //< Is navigation locked?
isMainFrame); //< Is main frame?
return !m_webPage->navigationLocked();
}
QWebPage *createWindow (WebWindowType type) {
Q_UNUSED(type);
WebPage *newPage;
// Create a new "raw" WebPage object
if (m_webPage->ownsPages()) {
newPage = new WebPage(m_webPage);
} else {
newPage = new WebPage(Phantom::instance());
Phantom::instance()->m_pages.append(newPage);
}
// Apply default settings
newPage->applySettings(Phantom::instance()->defaultPageSettings());
// Signal JS shim to catch, decorate and store this new child page
emit m_webPage->rawPageCreated(newPage);
// Return the new QWebPage to the QWebKit backend
return newPage->m_customWebPage;
}
private:
WebPage *m_webPage;
QString m_userAgent;
QString m_uploadFile;
friend class WebPage;
};
/**
* Contains the Callback Objects used to regulate callback-traffic from the webpage internal context.
* It's directly exposed within the webpage JS context,
* and indirectly in the phantom JS context.
*
* @class WebPageCallbacks
*/
class WebpageCallbacks : public QObject
{
Q_OBJECT
public:
WebpageCallbacks(QObject *parent = 0)
: QObject(parent)
, m_genericCallback(NULL)
, m_jsConfirmCallback(NULL)
, m_jsPromptCallback(NULL)
{
}
QObject *getGenericCallback() {
if (!m_genericCallback) {
m_genericCallback = new Callback(this);
}
return m_genericCallback;
}
QObject *getJsConfirmCallback() {
if (!m_jsConfirmCallback) {
m_jsConfirmCallback = new Callback(this);
}
return m_jsConfirmCallback;
}
QObject *getJsPromptCallback() {
if (!m_jsPromptCallback) {
m_jsPromptCallback = new Callback(this);
}
return m_jsPromptCallback;
}
public slots:
QVariant call(const QVariantList &arguments) {
if (m_genericCallback) {
return m_genericCallback->call(arguments);
}
return QVariant();
}
private:
Callback *m_genericCallback;
Callback *m_jsConfirmCallback;
Callback *m_jsPromptCallback;
friend class WebPage;
};
WebPage::WebPage(QObject *parent, const QUrl &baseUrl)
: REPLCompletable(parent)
, m_navigationLocked(false)
, m_mousePos(QPoint(0, 0))
, m_ownsPages(true)
{
setObjectName("WebPage");
m_callbacks = new WebpageCallbacks(this);
m_customWebPage = new CustomPage(this);
m_mainFrame = m_customWebPage->mainFrame();
m_currentFrame = m_mainFrame;
m_mainFrame->setHtml(BLANK_HTML, baseUrl);
Config *phantomCfg = Phantom::instance()->config();
// NOTE: below you can see that between all the event handlers
// we listen for, "SLOT(setupFrame())" is connected to 2 signals:
// 1. page.loadFinished
// 2. mainFrame.javaScriptWindowObjectCleared
// We have found out that, despite our understanding, the event #1 above
// fires BEFORE the event #2 when loading a url.
// But, if no page load is requested, #2 is the only one to fire.
//
// So, we call the slot twice to setup the main frame
// (no parameter == main frame) but we make sure to do the setup only once.
//
// @see WebPage::setupFrame(QWebFrame *) for details.
connect(m_mainFrame, SIGNAL(loadStarted()), this, SLOT(switchToMainFrame()), Qt::QueuedConnection);
connect(m_mainFrame, SIGNAL(loadFinished(bool)), this, SLOT(setupFrame()), Qt::QueuedConnection);
connect(m_customWebPage, SIGNAL(frameCreated(QWebFrame*)), this, SLOT(setupFrame(QWebFrame*)), Qt::QueuedConnection);
connect(m_mainFrame, SIGNAL(javaScriptWindowObjectCleared()), this, SLOT(setupFrame()));
connect(m_mainFrame, SIGNAL(javaScriptWindowObjectCleared()), SIGNAL(initialized()));
connect(m_mainFrame, SIGNAL(urlChanged(QUrl)), SIGNAL(urlChanged(QUrl)));
connect(m_customWebPage, SIGNAL(loadStarted()), SIGNAL(loadStarted()), Qt::QueuedConnection);
connect(m_customWebPage, SIGNAL(loadFinished(bool)), SLOT(finish(bool)), Qt::QueuedConnection);
connect(m_customWebPage, SIGNAL(windowCloseRequested()), this, SLOT(close()), Qt::QueuedConnection);
// Start with transparent background.
QPalette palette = m_customWebPage->palette();
palette.setBrush(QPalette::Base, Qt::transparent);
m_customWebPage->setPalette(palette);
// Set the page Library path
setLibraryPath(QFileInfo(phantomCfg->scriptFile()).dir().absolutePath());
// Page size does not need to take scrollbars into account.
m_mainFrame->setScrollBarPolicy(Qt::Horizontal, Qt::ScrollBarAlwaysOff);
m_mainFrame->setScrollBarPolicy(Qt::Vertical, Qt::ScrollBarAlwaysOff);
m_customWebPage->settings()->setAttribute(QWebSettings::OfflineStorageDatabaseEnabled, true);
if (phantomCfg->offlineStoragePath().isEmpty()) {
m_customWebPage->settings()->setOfflineStoragePath(QDesktopServices::storageLocation(QDesktopServices::DataLocation));
} else {
m_customWebPage->settings()->setOfflineStoragePath(phantomCfg->offlineStoragePath());
}
if (phantomCfg->offlineStorageDefaultQuota() > 0) {
m_customWebPage->settings()->setOfflineStorageDefaultQuota(phantomCfg->offlineStorageDefaultQuota());
}
m_customWebPage->settings()->setAttribute(QWebSettings::OfflineWebApplicationCacheEnabled, true);
m_customWebPage->settings()->setOfflineWebApplicationCachePath(QDesktopServices::storageLocation(QDesktopServices::DataLocation));
m_customWebPage->settings()->setAttribute(QWebSettings::FrameFlatteningEnabled, true);
m_customWebPage->settings()->setAttribute(QWebSettings::LocalStorageEnabled, true);
m_customWebPage->settings()->setLocalStoragePath(QDesktopServices::storageLocation(QDesktopServices::DataLocation));
// Custom network access manager to allow traffic monitoring.
m_networkAccessManager = new NetworkAccessManager(this, phantomCfg);
m_customWebPage->setNetworkAccessManager(m_networkAccessManager);
connect(m_networkAccessManager, SIGNAL(resourceRequested(QVariant)),
SIGNAL(resourceRequested(QVariant)));
connect(m_networkAccessManager, SIGNAL(resourceReceived(QVariant)),
SIGNAL(resourceReceived(QVariant)));
m_customWebPage->setViewportSize(QSize(400, 300));
}
WebPage::~WebPage()
{
emit closing(this);
}
QWebFrame *WebPage::mainFrame()
{
return m_mainFrame;
}
QString WebPage::content() const
{
return m_mainFrame->toHtml();
}
QString WebPage::frameContent() const
{
return m_currentFrame->toHtml();
}
void WebPage::setContent(const QString &content)
{
m_mainFrame->setHtml(content);
}
void WebPage::setFrameContent(const QString &content)
{
m_currentFrame->setHtml(content);
}
QString WebPage::title() const
{
return m_mainFrame->title();
}
QString WebPage::frameTitle() const
{
return m_currentFrame->title();
}
QString WebPage::url() const
{
return m_mainFrame->url().toString();
}
QString WebPage::frameUrl() const
{
return m_currentFrame->url().toString();
}
bool WebPage::canGoBack()
{
return m_customWebPage->history()->canGoBack();
}
bool WebPage::back()
{
if (canGoBack()) {
m_customWebPage->triggerAction(QWebPage::Back);
return true;
}
return false;
}
bool WebPage::canGoForward()
{
return m_customWebPage->history()->canGoForward();
}
bool WebPage::forward()
{
if (canGoForward()) {
m_customWebPage->triggerAction(QWebPage::Forward);
return true;
}
return false;
}
void WebPage::reload()
{
m_customWebPage->triggerAction(QWebPage::Reload);
}
void WebPage::stop()
{
m_customWebPage->triggerAction(QWebPage::Stop);
}
QString WebPage::plainText() const
{
return m_mainFrame->toPlainText();
}
QString WebPage::framePlainText() const
{
return m_currentFrame->toPlainText();
}
QString WebPage::libraryPath() const
{
return m_libraryPath;
}
void WebPage::setLibraryPath(const QString &libraryPath)
{
m_libraryPath = libraryPath;
}
QString WebPage::offlineStoragePath() const
{
return m_customWebPage->settings()->offlineStoragePath();
}
int WebPage::offlineStorageQuota() const
{
return m_customWebPage->settings()->offlineStorageDefaultQuota();
}
void WebPage::showInspector(const int port)
{
m_customWebPage->settings()->setAttribute(QWebSettings::DeveloperExtrasEnabled, true);
m_inspector = new QWebInspector;
m_inspector->setPage(m_customWebPage);
if (port == -1) {
m_inspector->setVisible(true);
} else {
m_customWebPage->setProperty("_q_webInspectorServerPort", port);
}
}
void WebPage::applySettings(const QVariantMap &def)
{
QWebSettings *opt = m_customWebPage->settings();
opt->setAttribute(QWebSettings::AutoLoadImages, def[PAGE_SETTINGS_LOAD_IMAGES].toBool());
opt->setAttribute(QWebSettings::JavascriptEnabled, def[PAGE_SETTINGS_JS_ENABLED].toBool());
opt->setAttribute(QWebSettings::XSSAuditingEnabled, def[PAGE_SETTINGS_XSS_AUDITING].toBool());
opt->setAttribute(QWebSettings::LocalContentCanAccessRemoteUrls, def[PAGE_SETTINGS_LOCAL_ACCESS_REMOTE].toBool());
opt->setAttribute(QWebSettings::WebSecurityEnabled, def[PAGE_SETTINGS_WEB_SECURITY_ENABLED].toBool());
opt->setAttribute(QWebSettings::JavascriptCanOpenWindows, def[PAGE_SETTINGS_JS_CAN_OPEN_WINDOWS].toBool());
opt->setAttribute(QWebSettings::JavascriptCanCloseWindows, def[PAGE_SETTINGS_JS_CAN_CLOSE_WINDOWS].toBool());
if (def.contains(PAGE_SETTINGS_USER_AGENT))
m_customWebPage->m_userAgent = def[PAGE_SETTINGS_USER_AGENT].toString();
if (def.contains(PAGE_SETTINGS_USERNAME))
m_networkAccessManager->setUserName(def[PAGE_SETTINGS_USERNAME].toString());
if (def.contains(PAGE_SETTINGS_PASSWORD))
m_networkAccessManager->setPassword(def[PAGE_SETTINGS_PASSWORD].toString());
if (def.contains(PAGE_SETTINGS_MAX_AUTH_ATTEMPTS))
m_networkAccessManager->setMaxAuthAttempts(def[PAGE_SETTINGS_MAX_AUTH_ATTEMPTS].toInt());
}
QString WebPage::userAgent() const
{
return m_customWebPage->m_userAgent;
}
void WebPage::setNavigationLocked(bool lock)
{
m_navigationLocked = lock;;
}
bool WebPage::navigationLocked()
{
return m_navigationLocked;
}
void WebPage::setViewportSize(const QVariantMap &size)
{
int w = size.value("width").toInt();
int h = size.value("height").toInt();
if (w > 0 && h > 0)
m_customWebPage->setViewportSize(QSize(w, h));
}
QVariantMap WebPage::viewportSize() const
{
QVariantMap result;
QSize size = m_customWebPage->viewportSize();
result["width"] = size.width();
result["height"] = size.height();
return result;
}
void WebPage::setClipRect(const QVariantMap &size)
{
int w = size.value("width").toInt();
int h = size.value("height").toInt();
int top = size.value("top").toInt();
int left = size.value("left").toInt();
if (w >= 0 && h >= 0)
m_clipRect = QRect(left, top, w, h);
}
QVariantMap WebPage::clipRect() const
{
QVariantMap result;
result["width"] = m_clipRect.width();
result["height"] = m_clipRect.height();
result["top"] = m_clipRect.top();
result["left"] = m_clipRect.left();
return result;
}
void WebPage::setScrollPosition(const QVariantMap &size)
{
int top = size.value("top").toInt();
int left = size.value("left").toInt();
m_scrollPosition = QPoint(left,top);
m_mainFrame->setScrollPosition(m_scrollPosition);
}
QVariantMap WebPage::scrollPosition() const
{
QVariantMap result;
result["top"] = m_scrollPosition.y();
result["left"] = m_scrollPosition.x();
return result;
}
void WebPage::setPaperSize(const QVariantMap &size)
{
m_paperSize = size;
}
QVariantMap WebPage::paperSize() const
{
return m_paperSize;
}
QVariant WebPage::evaluateJavaScript(const QString &code)
{
QVariant evalResult;
QString function = "(" + code + ")()";
qDebug() << "WebPage - evaluateJavaScript" << function;
evalResult = m_currentFrame->evaluateJavaScript(
function, //< function evaluated
QString("phantomjs://webpage.evaluate()")); //< reference source file
qDebug() << "WebPage - evaluateJavaScript result" << evalResult;
return evalResult;
}
bool WebPage::javaScriptConfirm(const QString &msg)
{
if (m_callbacks->m_jsConfirmCallback) {
QVariant res = m_callbacks->m_jsConfirmCallback->call(QVariantList() << msg);
if (res.canConvert<bool>()) {
return res.toBool();
}
}
return false;
}
bool WebPage::javaScriptPrompt(const QString &msg, const QString &defaultValue, QString *result)
{
if (m_callbacks->m_jsPromptCallback) {
QVariant res = m_callbacks->m_jsPromptCallback->call(QVariantList() << msg << defaultValue);
if (!res.isNull() && res.canConvert<QString>()) {
result->append(res.toString());
return true;
}
}
return false;
}
void WebPage::finish(bool ok)
{
QString status = ok ? "success" : "fail";
emit loadFinished(status);
}
void WebPage::setCustomHeaders(const QVariantMap &headers)
{
m_networkAccessManager->setCustomHeaders(headers);
}
QVariantMap WebPage::customHeaders() const
{
return m_networkAccessManager->customHeaders();
}
bool WebPage::setCookies(const QVariantList &cookies)
{
// Delete all the cookies for this URL
CookieJar::instance()->deleteCookies(this->url());
// Add a new set of cookies foor this URL
return CookieJar::instance()->addCookiesFromMap(cookies, this->url());
}
QVariantList WebPage::cookies() const
{
// Return all the Cookies visible to this Page, as a list of Maps (aka JSON in JS space)
return CookieJar::instance()->cookiesToMap(this->url());
}
bool WebPage::addCookie(const QVariantMap &cookie)
{
return CookieJar::instance()->addCookieFromMap(cookie, this->url());
}
bool WebPage::deleteCookie(const QString &cookieName)
{
if (!cookieName.isEmpty()) {
return CookieJar::instance()->deleteCookie(cookieName, this->url());
}
return false;
}
bool WebPage::clearCookies()
{
return CookieJar::instance()->deleteCookies(this->url());
}
void WebPage::openUrl(const QString &address, const QVariant &op, const QVariantMap &settings)
{
QString operation;
QByteArray body;
QNetworkRequest request;
applySettings(settings);
m_customWebPage->triggerAction(QWebPage::Stop);
if (op.type() == QVariant::String)
operation = op.toString();
if (op.type() == QVariant::Map) {
operation = op.toMap().value("operation").toString();
body = op.toMap().value("data").toByteArray();
if (op.toMap().contains("headers")) {
QMapIterator<QString, QVariant> i(op.toMap().value("headers").toMap());
while (i.hasNext()) {
i.next();
request.setRawHeader(i.key().toUtf8(), i.value().toString().toUtf8());
}
}
}
if (operation.isEmpty())
operation = "get";
QNetworkAccessManager::Operation networkOp = QNetworkAccessManager::UnknownOperation;
operation = operation.toLower();
if (operation == "get")
networkOp = QNetworkAccessManager::GetOperation;
else if (operation == "head")
networkOp = QNetworkAccessManager::HeadOperation;
else if (operation == "put")
networkOp = QNetworkAccessManager::PutOperation;
else if (operation == "post")
networkOp = QNetworkAccessManager::PostOperation;
else if (operation == "delete")
networkOp = QNetworkAccessManager::DeleteOperation;
if (networkOp == QNetworkAccessManager::UnknownOperation) {
m_mainFrame->evaluateJavaScript("console.error('Unknown network operation: " + operation + "');", QString());
return;
}
if (address == "about:blank") {
m_mainFrame->setHtml(BLANK_HTML);
} else {
QUrl url = QUrl::fromEncoded(QByteArray(address.toAscii()));
#if QT_VERSION == QT_VERSION_CHECK(4, 8, 0)
// Assume local file if scheme is empty
if (url.scheme().isEmpty()) {
url.setPath(QFileInfo(url.toString()).absoluteFilePath().prepend("/"));
url.setScheme("file");
}
#endif
request.setUrl(url);
m_mainFrame->load(request, networkOp, body);
}
}
void WebPage::release()
{
close();
}
void WebPage::close() {
deleteLater();
}
bool WebPage::render(const QString &fileName)
{
if (m_mainFrame->contentsSize().isEmpty())
return false;
QFileInfo fileInfo(fileName);
QDir dir;
dir.mkpath(fileInfo.absolutePath());
if (fileName.endsWith(".pdf", Qt::CaseInsensitive))
return renderPdf(fileName);
QImage buffer = renderImage();
if (fileName.toLower().endsWith(".gif")) {
return exportGif(buffer, fileName);
}
return buffer.save(fileName);
}
QString WebPage::renderBase64(const QByteArray &format)
{
QByteArray nformat = format.toLower();
// Check if the given format is supported
if (QImageWriter::supportedImageFormats().contains(nformat)) {
QImage rawPageRendering = renderImage();
// Prepare buffer for writing
QByteArray bytes;
QBuffer buffer(&bytes);
buffer.open(QIODevice::WriteOnly);
// Writing image to the buffer, using PNG encoding
rawPageRendering.save(&buffer, nformat);
return bytes.toBase64();
}
// Return an empty string in case an unsupported format was provided
return "";
}
QImage WebPage::renderImage()
{
QSize contentsSize = m_mainFrame->contentsSize();
contentsSize -= QSize(m_scrollPosition.x(), m_scrollPosition.y());
QRect frameRect = QRect(QPoint(0, 0), contentsSize);
if (!m_clipRect.isNull())
frameRect = m_clipRect;
QSize viewportSize = m_customWebPage->viewportSize();
m_customWebPage->setViewportSize(contentsSize);
#ifdef Q_OS_WIN32
QImage::Format format = QImage::Format_ARGB32_Premultiplied;
#else
QImage::Format format = QImage::Format_ARGB32;
#endif
QImage buffer(frameRect.size(), format);
buffer.fill(qRgba(255, 255, 255, 0));
QPainter painter;
// We use tiling approach to work-around Qt software rasterizer bug
// when dealing with very large paint device.
// See http://code.google.com/p/phantomjs/issues/detail?id=54.
const int tileSize = 4096;
int htiles = (buffer.width() + tileSize - 1) / tileSize;
int vtiles = (buffer.height() + tileSize - 1) / tileSize;
for (int x = 0; x < htiles; ++x) {
for (int y = 0; y < vtiles; ++y) {
QImage tileBuffer(tileSize, tileSize, format);
tileBuffer.fill(qRgba(255, 255, 255, 0));
// Render the web page onto the small tile first
painter.begin(&tileBuffer);
painter.setRenderHint(QPainter::Antialiasing, true);
painter.setRenderHint(QPainter::TextAntialiasing, true);
painter.setRenderHint(QPainter::SmoothPixmapTransform, true);
painter.translate(-frameRect.left(), -frameRect.top());
painter.translate(-x * tileSize, -y * tileSize);
m_mainFrame->render(&painter, QRegion(frameRect));
painter.end();
// Copy the tile to the main buffer
painter.begin(&buffer);
painter.setCompositionMode(QPainter::CompositionMode_Source);
painter.drawImage(x * tileSize, y * tileSize, tileBuffer);
painter.end();
}
}
m_customWebPage->setViewportSize(viewportSize);
return buffer;
}
#define PHANTOMJS_PDF_DPI 72 // Different defaults. OSX: 72, X11: 75(?), Windows: 96
qreal stringToPointSize(const QString &string)
{
static const struct {
QString unit;
qreal factor;
} units[] = {
{ "mm", 72 / 25.4 },
{ "cm", 72 / 2.54 },
{ "in", 72 },
{ "px", 72.0 / PHANTOMJS_PDF_DPI / 2.54 },
{ "", 72.0 / PHANTOMJS_PDF_DPI / 2.54 }
};
for (uint i = 0; i < sizeof(units) / sizeof(units[0]); ++i) {
if (string.endsWith(units[i].unit)) {
QString value = string;
value.chop(units[i].unit.length());
return value.toDouble() * units[i].factor;
}
}
return 0;
}
qreal printMargin(const QVariantMap &map, const QString &key)
{
const QVariant margin = map.value(key);
if (margin.isValid() && margin.canConvert(QVariant::String)) {
return stringToPointSize(margin.toString());
} else {
return 0;
}
}
bool WebPage::renderPdf(const QString &fileName)
{
QPrinter printer;
printer.setOutputFormat(QPrinter::PdfFormat);
printer.setOutputFileName(fileName);
printer.setResolution(PHANTOMJS_PDF_DPI);
QVariantMap paperSize = m_paperSize;
if (paperSize.isEmpty()) {
const QSize pageSize = m_mainFrame->contentsSize();
paperSize.insert("width", QString::number(pageSize.width()) + "px");
paperSize.insert("height", QString::number(pageSize.height()) + "px");
paperSize.insert("margin", "0px");
}
if (paperSize.contains("width") && paperSize.contains("height")) {
const QSizeF sizePt(ceil(stringToPointSize(paperSize.value("width").toString())),
ceil(stringToPointSize(paperSize.value("height").toString())));
printer.setPaperSize(sizePt, QPrinter::Point);
} else if (paperSize.contains("format")) {
const QPrinter::Orientation orientation = paperSize.contains("orientation")
&& paperSize.value("orientation").toString().compare("landscape", Qt::CaseInsensitive) == 0 ?
QPrinter::Landscape : QPrinter::Portrait;
printer.setOrientation(orientation);
static const struct {
QString format;
QPrinter::PaperSize paperSize;
} formats[] = {
{ "A0", QPrinter::A0 },
{ "A1", QPrinter::A1 },
{ "A2", QPrinter::A2 },
{ "A3", QPrinter::A3 },
{ "A4", QPrinter::A4 },
{ "A5", QPrinter::A5 },
{ "A6", QPrinter::A6 },
{ "A7", QPrinter::A7 },
{ "A8", QPrinter::A8 },
{ "A9", QPrinter::A9 },
{ "B0", QPrinter::B0 },
{ "B1", QPrinter::B1 },
{ "B2", QPrinter::B2 },
{ "B3", QPrinter::B3 },
{ "B4", QPrinter::B4 },
{ "B5", QPrinter::B5 },
{ "B6", QPrinter::B6 },
{ "B7", QPrinter::B7 },
{ "B8", QPrinter::B8 },
{ "B9", QPrinter::B9 },
{ "B10", QPrinter::B10 },
{ "C5E", QPrinter::C5E },
{ "Comm10E", QPrinter::Comm10E },
{ "DLE", QPrinter::DLE },
{ "Executive", QPrinter::Executive },
{ "Folio", QPrinter::Folio },
{ "Ledger", QPrinter::Ledger },
{ "Legal", QPrinter::Legal },
{ "Letter", QPrinter::Letter },
{ "Tabloid", QPrinter::Tabloid }
};
printer.setPaperSize(QPrinter::A4); // Fallback
for (uint i = 0; i < sizeof(formats) / sizeof(formats[0]); ++i) {
if (paperSize.value("format").toString().compare(formats[i].format, Qt::CaseInsensitive) == 0) {
printer.setPaperSize(formats[i].paperSize);
break;
}
}
} else {
return false;
}
if (paperSize.contains("border") && !paperSize.contains("margin")) {
// backwards compatibility
paperSize["margin"] = paperSize["border"];
}
qreal marginLeft = 0;
qreal marginTop = 0;
qreal marginRight = 0;
qreal marginBottom = 0;
if (paperSize.contains("margin")) {
const QVariant margins = paperSize["margin"];
if (margins.canConvert(QVariant::Map)) {
const QVariantMap map = margins.toMap();
marginLeft = printMargin(map, "left");
marginTop = printMargin(map, "top");
marginRight = printMargin(map, "right");
marginBottom = printMargin(map, "bottom");
} else if (margins.canConvert(QVariant::String)) {
const qreal margin = stringToPointSize(margins.toString());
marginLeft = margin;
marginTop = margin;
marginRight = margin;
marginBottom = margin;
}
}
printer.setPageMargins(marginLeft, marginTop, marginRight, marginBottom, QPrinter::Point);
m_mainFrame->print(&printer, this);
return true;
}
void WebPage::setZoomFactor(qreal zoom)
{
m_mainFrame->setZoomFactor(zoom);
}
qreal WebPage::zoomFactor() const
{
return m_mainFrame->zoomFactor();
}
QString WebPage::windowName() const
{
return m_mainFrame->evaluateJavaScript("window.name;").toString();
}
qreal getHeight(const QVariantMap &map, const QString &key)
{
QVariant footer = map.value(key);
if (!footer.canConvert(QVariant::Map)) {
return 0;