mirror of
git://projects.qi-hardware.com/qvido.git
synced 2024-12-22 13:59:34 +02:00
327 lines
9.1 KiB
C++
327 lines
9.1 KiB
C++
/***************************************************************************
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* Copyright (C) 2010 by Mirko Lindner *
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* mirko@sharism.cc *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
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***************************************************************************/
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// #include <iostream>
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#include <QtGui>
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#include <QMessageBox>
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#include <QTextBrowser>
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#include <string>
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#include <sstream>
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// #include <vector>
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#include "qmain.h"
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#include <zim/file.h>
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#include <zim/search.h>
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#include <zim/fileimpl.h>
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#include <cxxtools/log.h>
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log_define("qvido.htmlarea");
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bool UserEventFilter::eventFilter(QObject *obj, QEvent *event)
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{
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if (event->type() == QEvent::KeyPress) {
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QKeyEvent *keyEvent = static_cast<QKeyEvent *>(event);
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log_debug("Ate key press " << keyEvent->key());
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return true;
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} else {
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// standard event processing
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return QObject::eventFilter(obj, event);
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}
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}
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///////////////////////////////////////////
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// Functions related to htmlarea
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void HtmlArea::linking( const QUrl &txt ){
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QString str = txt.toString();
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// // check if url is an internal anchor if yes jump if not end request and query zimlib
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if (str.startsWith("#") == 1){
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this->scrollToAnchor(str);
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}else{
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log_debug(str.toUtf8().data());
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this->setSource(this->source());
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this->setNewContent(1, str);
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}
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}
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void HtmlArea::setNewContent( int method, QString str = "" ){
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qobject_cast<QMain *>(this->parentWidget())->setEnabled(false);
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QString current = this->toHtml();
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this->setText("<html><body><br/><br/><br/><br/><p>Loading ... </p></body></html>");
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qApp->processEvents();
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zim::Article article;
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if (method == 0){
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article = this->getRandomArticle();
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}else if( method == 1){
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article = this->getArticleFromUrl(str);
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}else if( method == 2){
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// first search
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zim::Search::Results result = this->searchArticleFromTitle(str);
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// if result = 1 display article
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if (result.size() == 1){
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log_debug("result size 1");
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//create ZIM file accessor
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zim::File file = this->get_file();
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article = file.getArticle(result[0].getArticle().getIndex());
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}
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// if result > 1 display options return at end
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else if (result.size() > 1){
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log_debug("more than one result");
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QString res;
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for (unsigned i = 0; i < result.size(); ++i)
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{
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res.append("<li><a href='" + QString::fromUtf8(result[i].getArticle().getUrl().c_str()) + "'>" + QString::fromUtf8(result[i].getArticle().getTitle().c_str()) + "</a></li>");
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}
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this->setText(res);
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qApp->processEvents();
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qobject_cast<QMain *>(this->parentWidget())->setEnabled(true);
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return;
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}
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}
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//check if article is valid, if display if not show error
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if (article.good()){
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log_debug("article is good");
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this->url = QString::fromUtf8(article.getUrl().c_str());
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log_debug("Url set");
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//TODO build history, set Title
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//TODO certain zimfiles break here
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// example full german file breaks here with article "Trockenrasierer"
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std::string content = "<a name=\"top\"></a>";
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content.append(article.getPage());
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this->setText(QString::fromUtf8(content.c_str()));
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log_debug("Text set");
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// log_debug("index: " << article.getIndex());
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// log_debug("enabled: " << this->isEnabled());
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log_debug("string: " << str.toUtf8().data());
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qApp->processEvents();
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qobject_cast<QMain *>(this->parentWidget())->setEnabled(true);
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}else{
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this->setText(current);
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//construct error text
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QString errText = "The article you requested (";
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errText.append(str);
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errText.append(") could not be found.");
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log_debug("string: " << str.toUtf8().data());
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qApp->processEvents();
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qobject_cast<QMain *>(this->parentWidget())->setEnabled(true);
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//construct and display error box
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QMessageBox::information(qobject_cast<QMain *>(this->parentWidget()), "Error",
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errText,
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QMessageBox::Close);
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}
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}
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// // slots
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// // TODO ...is there any way to connect setNewContent to Actions directly using default values?
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void HtmlArea::getRandom(){
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log_debug("getRandom called");
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if(this->isEnabled()){
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this->setNewContent( 0 );
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}
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}
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void HtmlArea::searchArticle(QString term){
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log_debug("searchArticle called");
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if(this->isEnabled()){
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this->setNewContent( 2 , term);
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}
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}
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void HtmlArea::goToTop(){
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this->scrollToAnchor("#top");
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}
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//
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////////////////////////////////////////////
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////////////////////////////////////////////
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// Debug functions
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void HtmlArea::sourceChange( const QUrl &txt ){
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QString str = txt.toString();
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log_debug("source: " << str.toStdString());
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}
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//
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////////////////////////////////////////////
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//reimplimentations
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QVariant HtmlArea::loadResource(int type, const QUrl &name)
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{
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QVariant qv;
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// check if requested resource is an image
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if (type == 2){
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zim::Article article;
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article = getArticleFromUrl(name.toString());
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if(article.good()){
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QString mtype(article.getMimeType().c_str());
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QByteArray data = QByteArray::fromRawData(article.getData().data(), article.getData().size());
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QImage img;
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mtype.remove("image/");
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img.loadFromData(data, mtype.toUpper().toLatin1());
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// log_debug("index: " << article.getIndex() << " height: " << article.getData().size() << " mtype: " << std::string(mtype.toUpper().toLatin1()));
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qv = img;
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}
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}
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return qv;
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}
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////////////////////////////////////////////
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// Zimlib functions
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const zim::File& HtmlArea::get_file()
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{
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static zim::File zimFile;
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if (!zimFile.good())
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{
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zimFile = zim::File(qobject_cast<QMain *>(this->parentWidget())->fileLocation);
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log_debug("number of articles: " << zimFile.getCountArticles());
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}
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return zimFile;
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}
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//get random article
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zim::Article HtmlArea::getRandomArticle(){
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//get file
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zim::File file = this->get_file();
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//create empty article
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zim::Article article;
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// log_debug("before random loop");
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do
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{
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// generate random number
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unsigned int seed = static_cast<unsigned int>(time(0));
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zim::size_type idx = static_cast<zim::size_type>(static_cast<double>(file.getCountArticles()) * rand_r(&seed) / RAND_MAX);
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//retrieve article
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article = file.getArticle(idx);
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// article = file.getArticle(151);
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log_debug("idx: " << idx);
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//loop in case article is redirect
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// log_debug("before redirect loop");
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do
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{
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article = article.getRedirectArticle();
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log_debug("random url: " << article.getUrl());
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}while(article.isRedirect());
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}while(article.getUrl() == this->url.toStdString());
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// log_debug("after random loop");
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return article;
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}
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zim::Article HtmlArea::getArticleFromUrl(QString url)
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{
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// TODO unescape url
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//create ZIM file accessor
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zim::File file = this->get_file();
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//create empty article
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zim::Article article;
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// remove '+' signs
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QString term = url.replace( '+', ' ');
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//set default namespace
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char ns = 'A';
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//check for different namespace
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if (term.contains("/"))
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{
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if(term.startsWith("/")){
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term.remove(0,1);
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}
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int index = term.indexOf("/");
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if ( index == 1)
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{
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ns = term[0].toLatin1();
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term.remove(0, 2);
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}
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//TODO what was this for?
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/*
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else
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{
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term.erase(1);
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ns = term[0];
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found2 = term.find("/");
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term.erase(0, term.indexOf("/"));
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}*/
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}
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// // // try to retrieve article
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try
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{
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article = file.getArticle(ns, term.toUtf8().data());
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// QString mtype(article.getMimeType().c_str());
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// if(mtype.contains("image/") == false){
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// log_debug("term :" << term.toStdString());
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// }
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return article;
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}
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catch (const std::exception& e)
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{
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std::cerr << e.what() << std::endl;
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}
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}
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zim::Search::Results HtmlArea::searchArticleFromTitle(QString phrase)
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{
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char ns;
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ns = 'A';
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zim::File file = get_file();
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zim::Article article;
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zim::Search::Results result;
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zim::Search search(file);
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search.setSearchLimit(25);
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char *terms = phrase.toUtf8().data();
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search.find(result, ns, terms);
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log_debug("term :" << phrase.toUtf8().data());
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return result;
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}
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