PDFWidget.cc

   1 // $Id$
   2 //
   3 // Copyright (C) 2010
   4 //     Stefan Bund <info@j32.de>
   5
   6 /** \file
   7     \brief PDFWidget non-inline non-template implementation */
   8
   9 #include "PDFWidget.hh"
  10 //#include "PDFWidget.ih"
  11
  12 // Custom includes
  13 #include <iostream>
  14 #include <QNetworkRequest>
  15 #include <QNetworkReply>
  16 #include <QKeyEvent>
  17 #include <QWebView>
  18 #include <QWebFrame>
  19
  20 //#include "PDFWidget.mpp"
  21 #define prefix_
  22 ///////////////////////////////cc.p////////////////////////////////////////
  23
  24 prefix_ pykit::PDFWidget::PDFWidget(QString const & id, QNetworkAccessManager * manager,
  25                                     QWidget * parent)
  26     : QLabel(parent), id_ (id), manager_ (manager), currentPage_ (0)
  27
  28 {
  29     QWebView * webView (dynamic_cast<QWebView*>(parent));
  30     if (webView && !id_.isEmpty())
  31         webView->page()->mainFrame()->addToJavaScriptWindowObject(id_,this);
  32 }
  33
  34 prefix_ pykit::PDFWidget::PDFWidget(QString const & id, QString const & document,
  35                                     QNetworkAccessManager * manager, QWidget * parent)
  36     : QLabel(parent), id_ (id), manager_ (manager), currentPage_ (0)
  37
  38 {
  39     setFocusPolicy(Qt::WheelFocus);
  40     document_.reset(Poppler::Document::load(document));
  41     QWebView * webView (dynamic_cast<QWebView*>(parent));
  42     if (webView && !id_.isEmpty())
  43         webView->page()->mainFrame()->addToJavaScriptWindowObject(id_,this);
  44     documentSetup();
  45 }
  46
  47 prefix_ void pykit::PDFWidget::load(QUrl const & url)
  48 {
  49     QNetworkRequest request (url);
  50     QNetworkReply * reply (manager_->get(request));
  51     connect(reply, SIGNAL(finished()), this, SLOT(netLoadDocument()));
  52 }
  53
  54 prefix_ void pykit::PDFWidget::resizeEvent(QResizeEvent *)
  55 {
  56     if (! document_)
  57         return;
  58     QSizeF pageSize (document_->page(currentPage_)->pageSizeF());
  59     double n = 72.0 * width() / pageSize.width();
  60    if (n != dpi_) {
  61         dpi_ = n;
  62         showPage();
  63     }
  64 }
  65
  66 prefix_ void pykit::PDFWidget::netLoadDocument()
  67 {
  68     QNetworkReply * reply = static_cast<QNetworkReply*>(sender());
  69     if (reply->error() != QNetworkReply::NoError)
  70         return;
  71     QByteArray data (reply->read(reply->size()));
  72     document_.reset(Poppler::Document::loadFromData(data));
  73     documentSetup();
  74     reply->deleteLater();
  75 }
  76
  77 prefix_ void pykit::PDFWidget::documentSetup()
  78 {
  79     if (! document_)
  80         return;
  81     document_->setRenderHint(Poppler::Document::Antialiasing, true);
  82     document_->setRenderHint(Poppler::Document::TextAntialiasing, true);
  83     document_->setRenderHint(Poppler::Document::TextHinting, false);
  84     resizeEvent(0);
  85     showPage();
  86 }
  87
  88 prefix_ void pykit::PDFWidget::showPage()
  89 {
  90     if (! document_)
  91         return;
  92     QImage image (document_->page(currentPage_)->renderToImage(
  93                       dpi_, dpi_, 0, 0, width(), height()));
  94     setPixmap(QPixmap::fromImage(image));
  95 }
  96
  97 ///////////////////////////////cc.e////////////////////////////////////////
  98 #undef prefix_
  99 //#include "PDFWidget.mpp"
 100
 101 \f
 102 // Local Variables:
 103 // mode: c++
 104 // fill-column: 100
 105 // comment-column: 40
 106 // c-file-style: "j32"
 107 // indent-tabs-mode: nil
 108 // ispell-local-dictionary: "american"
 109 // compile-command: "make"
 110 // End: