From: Stefan Bund Date: Wed, 15 Dec 2010 14:30:18 +0000 (+0100) Subject: Add PDFWidget JavaScript API X-Git-Url: http://g0dil.de/git?a=commitdiff_plain;h=492b7564dff24f776491ec2308e2de4f1ff21119;p=pykit.git Add PDFWidget JavaScript API --- diff --git a/PDFWidget.cc b/PDFWidget.cc index a768e4f..e27939b 100644 --- a/PDFWidget.cc +++ b/PDFWidget.cc @@ -13,22 +13,35 @@ #include #include #include +#include +#include +#include //#include "PDFWidget.mpp" #define prefix_ ///////////////////////////////cc.p//////////////////////////////////////// -prefix_ pykit::PDFWidget::PDFWidget(QNetworkAccessManager * manager, QWidget * parent) - : QLabel(parent), manager_ (manager), currentPage_ (0) -{} - -prefix_ pykit::PDFWidget::PDFWidget(QString const & document, QNetworkAccessManager * manager, +prefix_ pykit::PDFWidget::PDFWidget(QString const & id, QNetworkAccessManager * manager, QWidget * parent) - : QLabel(parent), manager_ (manager), currentPage_ (0) + : QLabel(parent), id_ (id), manager_ (manager), currentPage_ (0), dpi_ (96.0), x_ (0), y_ (0) + +{ + QWebView * webView (dynamic_cast(parent)); + if (webView && !id_.isEmpty()) + webView->page()->mainFrame()->addToJavaScriptWindowObject(id_,this); +} + +prefix_ pykit::PDFWidget::PDFWidget(QString const & id, QString const & document, + QNetworkAccessManager * manager, QWidget * parent) + : QLabel(parent), id_ (id), manager_ (manager), currentPage_ (0), dpi_ (96.0), x_ (0), y_ (0) + { + setFocusPolicy(Qt::WheelFocus); document_.reset(Poppler::Document::load(document)); + QWebView * webView (dynamic_cast(parent)); + if (webView && !id_.isEmpty()) + webView->page()->mainFrame()->addToJavaScriptWindowObject(id_,this); documentSetup(); - showPage(); } prefix_ void pykit::PDFWidget::load(QUrl const & url) @@ -38,6 +51,134 @@ prefix_ void pykit::PDFWidget::load(QUrl const & url) connect(reply, SIGNAL(finished()), this, SLOT(netLoadDocument())); } +prefix_ void pykit::PDFWidget::zoomIn() +{ + zoomMode_ = Manual; + double n (dpi_ + ZoomStepDpi); + if (n > ZoomMaxDpi) + n = ZoomMaxDpi; + if (n != dpi_) { + dpi_ = n; + showPage(); + } +} + +prefix_ void pykit::PDFWidget::zoomOut() +{ + zoomMode_ = Manual; + double n (dpi_ - ZoomStepDpi); + if (n < ZoomMinDpi) + n = ZoomMinDpi; + if (n != dpi_) { + dpi_ = n; + showPage(); + } +} + +prefix_ void pykit::PDFWidget::zoomDPI(double dpi) +{ + zoomMode_ = Manual; + if (dpi < ZoomMinDpi) + dpi = ZoomMinDpi; + if (dpi > ZoomMaxDpi) + dpi = ZoomMaxDpi; + if (dpi != dpi_) { + dpi_ = dpi; + showPage(); + } +} + +prefix_ int pykit::PDFWidget::zoomWidth(int w) +{ + zoomMode_ = Width; + if (! document_) + return 0; + if (w == -1) + w = width(); + QSizeF pageSize (document_->page(currentPage_)->pageSizeF()); + double n = 72.0 * w / pageSize.width(); + if (n > ZoomMaxDpi) + n = ZoomMaxDpi; + if (n < ZoomMinDpi) + n = ZoomMinDpi; + if (n != dpi_) { + dpi_ = n; + showPage(); + } + return pageSize.height() * dpi_ / 72.0; +} + +prefix_ int pykit::PDFWidget::zoomHeight() +{ + zoomMode_ = Height; + if (! document_) + return 0; + QSizeF pageSize (document_->page(currentPage_)->pageSizeF()); + double n = 72.0 * height() / pageSize.height(); + if (n > ZoomMaxDpi) + n = ZoomMaxDpi; + if (n < ZoomMinDpi) + n = ZoomMinDpi; + if (n != dpi_) { + dpi_ = n; + showPage(); + } + return pageSize.width() * dpi_ / 72.0; +} + +prefix_ void pykit::PDFWidget::zoomFit() +{ + zoomMode_ = Fit; + if (! document_) + return; + QSizeF pageSize (document_->page(currentPage_)->pageSizeF()); + double xres = 72.0 * width() / pageSize.width(); + double yres = 72.0 * height() / pageSize.height(); + double n = xres < yres ? xres : yres; + if (n > ZoomMaxDpi) + n = ZoomMaxDpi; + if (n < ZoomMinDpi) + n = ZoomMinDpi; + if (n != dpi_) { + dpi_ = n; + showPage(); + } +} + +prefix_ int pykit::PDFWidget::getPDFWidth() +{ + if (! document_) + return 0; + QSizeF pageSize (document_->page(currentPage_)->pageSizeF()); + return pageSize.width() * dpi_ / 72.0; +} + +prefix_ int pykit::PDFWidget::getPDFHeight() +{ + if (! document_) + return 0; + QSizeF pageSize (document_->page(currentPage_)->pageSizeF()); + return pageSize.height() * dpi_ / 72.0; +} + +prefix_ void pykit::PDFWidget::resizeEvent(QResizeEvent *) +{ + switch (zoomMode_) { + case Manual: + break; + case Width: + zoomWidth(); + break; + case Height: + zoomHeight(); + break; + case Fit: + zoomFit(); + break; + } + showPage(); +} + prefix_ void pykit::PDFWidget::netLoadDocument() { QNetworkReply * reply = static_cast(sender()); @@ -46,15 +187,18 @@ prefix_ void pykit::PDFWidget::netLoadDocument() QByteArray data (reply->read(reply->size())); document_.reset(Poppler::Document::loadFromData(data)); documentSetup(); - showPage(); reply->deleteLater(); } prefix_ void pykit::PDFWidget::documentSetup() { + if (! document_) + return; document_->setRenderHint(Poppler::Document::Antialiasing, true); document_->setRenderHint(Poppler::Document::TextAntialiasing, true); document_->setRenderHint(Poppler::Document::TextHinting, false); + zoomFit(); + showPage(); } prefix_ void pykit::PDFWidget::showPage() @@ -62,7 +206,7 @@ prefix_ void pykit::PDFWidget::showPage() if (! document_) return; QImage image (document_->page(currentPage_)->renderToImage( - physicalDpiX(), physicalDpiY())); + dpi_, dpi_, x_, y_, width(), height())); setPixmap(QPixmap::fromImage(image)); } @@ -78,5 +222,5 @@ prefix_ void pykit::PDFWidget::showPage() // c-file-style: "j32" // indent-tabs-mode: nil // ispell-local-dictionary: "american" -// compile-command: "scons -U" +// compile-command: "make" // End: diff --git a/PDFWidget.hh b/PDFWidget.hh index bbb7e51..9a82461 100644 --- a/PDFWidget.hh +++ b/PDFWidget.hh @@ -27,12 +27,28 @@ namespace pykit { { Q_OBJECT; public: - explicit PDFWidget(QNetworkAccessManager * manager, QWidget * parent = 0); - PDFWidget(QString const & document, QNetworkAccessManager * manager, + explicit PDFWidget(QString const & id, QNetworkAccessManager * manager, + QWidget * parent = 0); + PDFWidget(QString const & id, QString const & document, QNetworkAccessManager * manager, QWidget * parent = 0); void load(QUrl const & url); + public slots: + void zoomIn(); + void zoomOut(); + void zoomDPI(double dpi); + + int zoomWidth(int w = -1); + int zoomHeight(); + void zoomFit(); + + int getPDFWidth(); + int getPDFHeight(); + + protected: + virtual void resizeEvent(QResizeEvent * event); + private slots: void netLoadDocument(); @@ -40,9 +56,19 @@ namespace pykit { void documentSetup(); void showPage(); + enum ZoomMode { Manual, Width, Height, Fit }; + static double const ZoomStepDpi = 20.0; + static double const ZoomMaxDpi = 200.0; + static double const ZoomMinDpi = 50.0; + + QString id_; QNetworkAccessManager * manager_; boost::scoped_ptr document_; int currentPage_; + ZoomMode zoomMode_; + double dpi_; + int x_; + int y_; }; } diff --git a/Viewer.cc b/Viewer.cc index c9101ee..7c726c9 100644 --- a/Viewer.cc +++ b/Viewer.cc @@ -48,12 +48,17 @@ prefix_ PDFWebPluginFactory::PDFWebPluginFactory(QNetworkAccessManager * manager {} prefix_ QObject * PDFWebPluginFactory::create(QString const & mimeType, QUrl const & url, - QStringList const & /* argumentNames */, - QStringList const & /* argumentValues */) + QStringList const & argumentNames, + QStringList const & argumentValues) const { if (mimeType == "application/pdf") { - pykit::PDFWidget * plugin = new pykit::PDFWidget(manager_); + int idix (argumentNames.indexOf("id")); + QString id; + if (idix>0) + id = argumentValues[idix]; + pykit::PDFWidget * plugin = new pykit::PDFWidget( + id, manager_, dynamic_cast(parent())); plugin->load(url); return plugin; }