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OpenBoard/src/gui/UBTeacherGuideWidgetsTools.cpp

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21 KiB

/*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <QTreeWidget>
#include <QVBoxLayout>
#include <QComboBox>
#include <QColor>
#include <QLabel>
#include <QDebug>
#include <QUrl>
#include <QWebSettings>
#include <QApplication>
#include <QDomElement>
#include <QWebFrame>
#include <QTextDocument>
#include <QTextBlock>
#include <QTextCursor>
#include "UBTeacherGuideWidgetsTools.h"
#include "core/UBPersistenceManager.h"
#include "core/UBApplication.h"
#include "board/UBBoardController.h"
#include "domain/UBGraphicsWidgetItem.h"
#include "globals/UBGlobals.h"
#include "frameworks/UBFileSystemUtils.h"
#include "customWidgets/UBMediaWidget.h"
#include "core/memcheck.h"
/***************************************************************************
* class UBAddItem *
***************************************************************************/
UBAddItem::UBAddItem(const QString &string, int addSubItemWidgetType, QTreeWidget* parent): QTreeWidgetItem(parent)
{
setIcon(0,QIcon(":images/increase.svg"));
setText(0,string);
setData(0,Qt::UserRole,QVariant(addSubItemWidgetType));
setData(1,Qt::UserRole,QVariant(addSubItemWidgetType));
setData(0,Qt::BackgroundRole,QVariant(QColor(200,200,200)));
setData(1,Qt::BackgroundRole,QVariant(QColor(200,200,200)));
setData(0,Qt::FontRole,QVariant(QFont(QApplication::font().family(),12)));
}
UBAddItem::~UBAddItem()
{
//NOOP
}
/***************************************************************************
* class UBTGActionWidget *
***************************************************************************/
UBTGActionWidget::UBTGActionWidget(QTreeWidgetItem* widget, QWidget* parent, const char* name) : QWidget(parent)
, mpLayout(NULL)
, mpOwner(NULL)
, mpTask(NULL)
{
setObjectName(name);
SET_STYLE_SHEET();
mpLayout = new QVBoxLayout(this);
mpOwner = new QComboBox(this);
mpOwner->setObjectName("DockPaletteWidgetComboBox");
mpOwner->setMinimumHeight(22);
QStringList qslOwner;
qslOwner << tr("Teacher") << tr("Student");
mpOwner->insertItems(0,qslOwner);
mpOwner->setCurrentIndex(0);
mpTask = new UBTGAdaptableText(widget,this);
mpTask->setPlaceHolderText(tr("Type task here ..."));
mpTask->setAcceptRichText(true);
mpTask->setObjectName("ActionWidgetTaskTextEdit");
mpLayout->addWidget(mpOwner);
mpLayout->addWidget(mpTask);
}
UBTGActionWidget::~UBTGActionWidget()
{
DELETEPTR(mpOwner);
DELETEPTR(mpTask);
DELETEPTR(mpLayout);
}
void UBTGActionWidget::initializeWithDom(QDomElement element)
{
mpOwner->setCurrentIndex(element.attribute("owner").toInt());
mpTask->setInitialText(element.attribute("task"));
}
tUBGEElementNode* UBTGActionWidget::saveData()
{
tUBGEElementNode* result = new tUBGEElementNode();
result->name = "action";
result->attributes.insert("owner",QString("%0").arg(mpOwner->currentIndex()));
result->attributes.insert("task",mpTask->text());
return result;
}
/***************************************************************************
* class UBTGAdaptableText *
***************************************************************************/
UBTGAdaptableText::UBTGAdaptableText(QTreeWidgetItem* widget, QWidget* parent, const char* name):QTextEdit(parent)
, mBottomMargin(5)
, mpTreeWidgetItem(widget)
, mMinimumHeight(0)
, mHasPlaceHolder(false)
, mIsUpdatingSize(false)
, mMaximumLength(0)
{
setObjectName(name);
connect(this,SIGNAL(textChanged()),this,SLOT(onTextChanged()));
setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
mMinimumHeight = document()->size().height() + mBottomMargin;
setMinimumHeight(mMinimumHeight);
}
void UBTGAdaptableText::setMaximumLength(int length)
{
mMaximumLength = length;
}
void UBTGAdaptableText::setPlaceHolderText(QString text)
{
mHasPlaceHolder = true;
// the space addition is to make this string unique and check against it to know
// if we are talking about a typed string or the placeholder string
mPlaceHolderText = text + " ";
setPlainText(mPlaceHolderText);
}
void UBTGAdaptableText::keyReleaseEvent(QKeyEvent* e)
{
QTextEdit::keyReleaseEvent(e);
if(mMaximumLength && toPlainText().length()>mMaximumLength){
setPlainText(toPlainText().left(mMaximumLength));
QTextCursor tc(document());
tc.setPosition(mMaximumLength);
setTextCursor(tc);
}
}
void UBTGAdaptableText::showEvent(QShowEvent* e)
{
Q_UNUSED(e);
if(!mIsUpdatingSize && !hasFocus() && mHasPlaceHolder && toPlainText().isEmpty() && !isReadOnly()){
setTextColor(QColor(Qt::lightGray));
setPlainText(mPlaceHolderText);
}
else
// If the teacherguide is collapsed, don't updated the size. Or set the size as the expanded size
onTextChanged();
}
QString UBTGAdaptableText::text()
{
QString result = toPlainText();
if(mHasPlaceHolder && result == mPlaceHolderText)
return "";
return result;
}
void UBTGAdaptableText::onTextChanged()
{
qreal documentSize = document()->size().height();
if(height() == documentSize + mBottomMargin){
return;
}
mIsUpdatingSize = true;
if(documentSize < mMinimumHeight){
setFixedHeight(mMinimumHeight);
}
else{
setFixedHeight(documentSize+mBottomMargin);
}
updateGeometry();
//to trig a resize on the tree widget item
if(mpTreeWidgetItem){
mpTreeWidgetItem->setDisabled(true);
mpTreeWidgetItem->setExpanded(true);
mpTreeWidgetItem->setDisabled(false);
setFocus();
}
mIsUpdatingSize = false;
}
void UBTGAdaptableText::setInitialText(const QString& text)
{
setText(text);
setReadOnly(false);
onTextChanged();
}
void UBTGAdaptableText::showText(const QString & text)
{
setText(text);
setReadOnly(true);
onTextChanged();
}
void UBTGAdaptableText::bottomMargin(int newValue)
{
mBottomMargin = newValue;
onTextChanged();
}
void UBTGAdaptableText::focusInEvent(QFocusEvent* e)
{
if(isReadOnly()){
e->ignore();
}
managePlaceholder(true);
QTextEdit::focusInEvent(e);
}
void UBTGAdaptableText::focusOutEvent(QFocusEvent* e)
{
managePlaceholder(false);
QTextEdit::focusOutEvent(e);
}
void UBTGAdaptableText::managePlaceholder(bool focus)
{
if(focus){
if(toPlainText() == mPlaceHolderText){
setTextColor(QColor(Qt::black));
setPlainText("");
}
setCursorToTheEnd();
}
else{
if(toPlainText().isEmpty()){
setTextColor(QColor(Qt::lightGray));
setPlainText(mPlaceHolderText);
}
}
}
void UBTGAdaptableText::setCursorToTheEnd()
{
QTextDocument* doc = document();
if(NULL != doc){
QTextBlock block = doc->lastBlock();
QTextCursor cursor(doc);
cursor.setPosition(block.position() + block.length() - 1);
setTextCursor(cursor);
}
}
/***************************************************************************
* class UBTGDraggableWeb *
***************************************************************************/
UBDraggableWeb::UBDraggableWeb(QString& relativePath, QWidget* parent): QWebView(parent)
, mDragStartPosition(QPoint(-1,-1))
, mDragStarted(false)
{
if(!relativePath.startsWith("file://"))
mRelativePath = QUrl::fromLocalFile(relativePath).toString();
else
mRelativePath = relativePath;
//NOOP
}
void UBDraggableWeb::mousePressEvent(QMouseEvent* event)
{
mDragStartPosition = event->pos();
mDragStarted = true;
QWebView::mousePressEvent(event);
}
void UBDraggableWeb::mouseReleaseEvent(QMouseEvent* event)
{
mDragStarted = false;
QWebView::mouseReleaseEvent(event);
}
void UBDraggableWeb::mouseMoveEvent(QMouseEvent* event)
{
if(mDragStarted && (event->pos() - mDragStartPosition).manhattanLength() > QApplication::startDragDistance()){
QDrag *drag = new QDrag(this);
QMimeData *mimeData = new QMimeData;
QList<QUrl> urlList;
urlList << QUrl(mRelativePath);
mimeData->setUrls(urlList);
drag->setMimeData(mimeData);
drag->exec();
event->accept();
mDragStarted = false;
}
else
QWebView::mouseMoveEvent(event);
}
/***************************************************************************
* class UBTGMediaWidget *
***************************************************************************/
UBTGMediaWidget::UBTGMediaWidget(QTreeWidgetItem* widget, QWidget* parent,const char* name): QStackedWidget(parent)
, mpTreeWidgetItem(widget)
, mpDropMeWidget(NULL)
, mpWorkWidget(NULL)
, mpLayout(NULL)
, mpMediaLayout(NULL)
, mpTitle(NULL)
, mpMediaLabelWidget(NULL)
, mpMediaWidget(NULL)
, mpWebView(NULL)
, mMediaPath(QString(""))
, mIsPresentationMode(false)
, mIsInitializationMode(false)
, mMediaWidgetHeight(150)
{
setObjectName(name);
mpDropMeWidget = new QLabel();
mpDropMeWidget->setObjectName("UBTGMediaDropMeLabel");
mpDropMeWidget->setText(tr("drop media here ..."));
mpDropMeWidget->setAlignment(Qt::AlignCenter);
setAcceptDrops(true);
addWidget(mpDropMeWidget);
setMinimumHeight(250);
}
UBTGMediaWidget::UBTGMediaWidget(QString mediaPath, QTreeWidgetItem* widget, QWidget* parent,bool forceFlashMediaType,const char* name): QStackedWidget(parent)
, mpTreeWidgetItem(widget)
, mpDropMeWidget(NULL)
, mpWorkWidget(NULL)
, mpLayout(NULL)
, mpMediaLayout(NULL)
, mpTitle(NULL)
, mpMediaLabelWidget(NULL)
, mpMediaWidget(NULL)
, mpWebView(NULL)
, mIsPresentationMode(true)
, mMediaType("")
, mIsInitializationMode(false)
, mMediaWidgetHeight(150)
{
setObjectName(name);
mMediaPath = UBApplication::boardController->selectedDocument()->persistencePath()+ "/" + mediaPath;
setAcceptDrops(false);
createWorkWidget(forceFlashMediaType);
setFixedHeight(200);
}
UBTGMediaWidget::~UBTGMediaWidget()
{
DELETEPTR(mpTitle);
DELETEPTR(mpMediaLabelWidget);
DELETEPTR(mpMediaWidget);
DELETEPTR(mpWebView);
DELETEPTR(mpMediaLayout);
DELETEPTR(mpLayout);
removeWidget(mpDropMeWidget);
DELETEPTR(mpDropMeWidget);
removeWidget(mpWorkWidget);
DELETEPTR(mpWorkWidget);
}
void UBTGMediaWidget::initializeWithDom(QDomElement element)
{
mIsInitializationMode = true;
setAcceptDrops(false);
mMediaPath = UBApplication::boardController->selectedDocument()->persistencePath() + "/" + element.attribute("relativePath");
createWorkWidget(element.attribute("mediaType").contains("flash"));
setFixedHeight(200);
mpTitle->setInitialText(element.attribute("title"));
mIsInitializationMode = false;
}
void UBTGMediaWidget::removeSource()
{
QFileInfo fileInfo(mMediaPath);
if(fileInfo.isFile())
QFile(mMediaPath).remove();
else
UBFileSystemUtils::deleteDir(mMediaPath);
}
void UBTGMediaWidget::hideEvent(QHideEvent* event)
{
if(mpWebView)
mpWebView->page()->mainFrame()->setContent(UBGraphicsW3CWidgetItem::freezedWidgetPage().toAscii());
QWidget::hideEvent(event);
}
void UBTGMediaWidget::showEvent(QShowEvent* event)
{
QWidget::showEvent(event);
if(mpWebView){
QString indexPath = mMediaPath+"/index.htm";
if(!QFile::exists(indexPath))
indexPath += "l";
mpWebView->load(QUrl::fromLocalFile(indexPath));
}
}
tUBGEElementNode* UBTGMediaWidget::saveData()
{
if(!mpTitle)
return 0;
tUBGEElementNode* result = new tUBGEElementNode();
QString relativePath = mMediaPath;
relativePath = relativePath.replace(UBApplication::boardController->selectedDocument()->persistencePath()+"/","");
result->name = "media";
result->attributes.insert("title",mpTitle->text());
result->attributes.insert("relativePath",relativePath);
result->attributes.insert("mediaType",mMediaType);
return result;
}
void UBTGMediaWidget::dragEnterEvent(QDragEnterEvent *event)
{
event->accept();
}
void UBTGMediaWidget::createWorkWidget(bool forceFlashMediaType)
{
QString mimeType = UBFileSystemUtils::mimeTypeFromFileName(mMediaPath);
bool setMedia = true;
UBDocumentProxy* proxyDocument = UBApplication::boardController->selectedDocument();
if(mimeType.contains("audio") || mimeType.contains("video")){
mMediaType = mimeType.contains("audio")? "audio":"movie";
mpMediaWidget = new UBMediaWidget(mimeType.contains("audio")?eMediaType_Audio:eMediaType_Video);
if(mIsPresentationMode || mIsInitializationMode){
mpMediaWidget->setFile(mMediaPath);
}
else{
mMediaPath = UBPersistenceManager::persistenceManager()->addObjectToTeacherGuideDirectory(proxyDocument, mMediaPath);
mpMediaWidget->setFile(mMediaPath);
}
}
else if(mimeType.contains("image")){
mMediaType = "image";
if(!(mIsPresentationMode || mIsInitializationMode))
mMediaPath = UBPersistenceManager::persistenceManager()->addObjectToTeacherGuideDirectory(proxyDocument, mMediaPath);
mpMediaLabelWidget = new QLabel();
QPixmap pixmap = QPixmap(mMediaPath);
pixmap = pixmap.scaledToHeight(mMediaWidgetHeight);
mpMediaLabelWidget->setPixmap(pixmap);
}
else if(mimeType.contains("widget") && !forceFlashMediaType){
mMediaType = "w3c";
if(!(mIsPresentationMode || mIsInitializationMode)){
mMediaPath = UBPersistenceManager::persistenceManager()->addWidgetToTeacherGuideDirectory(proxyDocument, mMediaPath);
}
mpWebView = new UBDraggableWeb(mMediaPath);
mpWebView->setAcceptDrops(false);
mpWebView->settings()->setAttribute(QWebSettings::JavaEnabled, true);
mpWebView->settings()->setAttribute(QWebSettings::PluginsEnabled, true);
mpWebView->settings()->setAttribute(QWebSettings::LocalStorageDatabaseEnabled, true);
mpWebView->settings()->setAttribute(QWebSettings::OfflineWebApplicationCacheEnabled, true);
mpWebView->settings()->setAttribute(QWebSettings::OfflineStorageDatabaseEnabled, true);
mpWebView->settings()->setAttribute(QWebSettings::JavascriptCanAccessClipboard, true);
mpWebView->settings()->setAttribute(QWebSettings::DnsPrefetchEnabled, true);
QString indexPath = mMediaPath+"/index.htm";
if(!QFile::exists(indexPath))
indexPath += "l";
mpWebView->load(QUrl::fromLocalFile(indexPath));
}
else if(mimeType.contains("x-shockwave-flash") || forceFlashMediaType){
mMediaType = "flash";
if(!(mIsPresentationMode || mIsInitializationMode)){
QDir baseW3CDirectory(UBPersistenceManager::persistenceManager()->teacherGuideAbsoluteObjectPath(proxyDocument));
mMediaPath = UBGraphicsW3CWidgetItem::createNPAPIWrapperInDir(mMediaPath,baseW3CDirectory,mimeType,QSize(100,100),QUuid::createUuid());
}
qDebug() << mMediaPath;
mpWebView = new UBDraggableWeb(mMediaPath);
mpWebView->setAcceptDrops(false);
mpWebView->settings()->setAttribute(QWebSettings::JavaEnabled, true);
mpWebView->settings()->setAttribute(QWebSettings::PluginsEnabled, true);
mpWebView->settings()->setAttribute(QWebSettings::LocalStorageDatabaseEnabled, true);
mpWebView->settings()->setAttribute(QWebSettings::OfflineWebApplicationCacheEnabled, true);
mpWebView->settings()->setAttribute(QWebSettings::OfflineStorageDatabaseEnabled, true);
mpWebView->settings()->setAttribute(QWebSettings::JavascriptCanAccessClipboard, true);
mpWebView->settings()->setAttribute(QWebSettings::DnsPrefetchEnabled, true);
QString indexPath = mMediaPath+"/index.htm";
if(!QFile::exists(indexPath))
indexPath += "l";
mpWebView->load(QUrl::fromLocalFile(indexPath));
}
else{
qDebug() << "createWorkWidget mime type not handled" << mimeType;
setMedia=false;
}
if(setMedia){
setAcceptDrops(false);
mpWorkWidget = new QWidget(this);
if(!mIsPresentationMode){
mpLayout = new QVBoxLayout(mpWorkWidget);
mpTitle = new UBTGAdaptableText(mpTreeWidgetItem,mpWorkWidget);
mpTitle->setPlaceHolderText(tr("Type title here..."));
mpLayout->addWidget(mpTitle);
mpMediaLayout = new QHBoxLayout;
mpLayout->addLayout(mpMediaLayout);
mpWorkWidget->setLayout(mpLayout);
}
else{
mpMediaLayout = new QHBoxLayout(mpWorkWidget);
mpWorkWidget->setLayout(mpMediaLayout);
}
mpMediaLayout->addStretch(1);
if(mpMediaLabelWidget){
mpMediaLabelWidget->setFixedHeight(mMediaWidgetHeight);
mpMediaLabelWidget->setParent(mpWorkWidget);
mpMediaLayout->addWidget(mpMediaLabelWidget);
}
else if (mpMediaWidget){
mpMediaWidget->setFixedHeight(mMediaWidgetHeight);
mpMediaWidget->setParent(mpWorkWidget);
mpMediaLayout->addWidget(mpMediaWidget);
}
else if (mpWebView){
mpWebView->setFixedHeight(mMediaWidgetHeight);
mpWebView->setParent(mpWorkWidget);
mpMediaLayout->addWidget(mpWebView);
mpWebView->show();
}
mpMediaLayout->addStretch(1);
addWidget(mpWorkWidget);
setCurrentWidget(mpWorkWidget);
mpWorkWidget->show();
}
}
void UBTGMediaWidget::parseMimeData(const QMimeData* pMimeData)
{
if(pMimeData){
if(pMimeData->hasText()){
mMediaPath = QUrl::fromLocalFile(pMimeData->text()).toString();
}
else if(pMimeData->hasUrls()){
mMediaPath = pMimeData->urls().at(0).toString();
}
else if(pMimeData->hasImage()){
qDebug() << "Not yet implemented";
}
}
else
qDebug() << "No mime data present";
createWorkWidget();
}
void UBTGMediaWidget::dropEvent(QDropEvent* event)
{
parseMimeData(event->mimeData());
event->accept();
}
void UBTGMediaWidget::mousePressEvent(QMouseEvent *event)
{
if (!mIsPresentationMode)
event->ignore();
else{
QDrag *drag = new QDrag(this);
QMimeData *mimeData = new QMimeData();
QList<QUrl> urlList;
#ifdef Q_WS_WIN
urlList << QUrl::fromLocalFile(mMediaPath);
#else
urlList << QUrl(mMediaPath);
#endif
mimeData->setUrls(urlList);
drag->setMimeData(mimeData);
drag->exec();
event->accept();
}
}
/***************************************************************************
* class UBTGUrlWidget *
***************************************************************************/
UBTGUrlWidget::UBTGUrlWidget(QWidget* parent, const char* name ):QWidget(parent)
, mpLayout(NULL)
, mpTitle(NULL)
, mpUrl(NULL)
{
setObjectName(name);
SET_STYLE_SHEET();
mpLayout = new QVBoxLayout(this);
setLayout(mpLayout);
mpTitle = new QLineEdit(this);
mpTitle->setObjectName("UBTGLineEdit");
mpTitle->setPlaceholderText(tr("Insert link title here..."));
mpUrl = new QLineEdit(this);
connect(mpUrl,SIGNAL(editingFinished()),this,SLOT(onUrlEditionFinished()));
mpUrl->setObjectName("UBTGLineEdit");
mpUrl->setPlaceholderText("http://");
mpLayout->addWidget(mpTitle);
mpLayout->addWidget(mpUrl);
}
UBTGUrlWidget::~UBTGUrlWidget()
{
DELETEPTR(mpTitle);
DELETEPTR(mpUrl);
DELETEPTR(mpLayout);
}
void UBTGUrlWidget::onUrlEditionFinished()
{
QString url = mpUrl->text();
if(url.length() && !url.startsWith("http://") && !url.startsWith("https://") && !url.startsWith("ftp://") && !url.startsWith("sftp://") && !url.startsWith("http://")){
mpUrl->setText("http://" + mpUrl->text());
setFocus();
}
}
void UBTGUrlWidget::initializeWithDom(QDomElement element)
{
mpTitle->setText(element.attribute("title"));
mpUrl->setText(element.attribute("url"));
}
tUBGEElementNode* UBTGUrlWidget::saveData()
{
tUBGEElementNode* result = new tUBGEElementNode();
result->name = "link";
result->attributes.insert("title",mpTitle->text());
result->attributes.insert("url",mpUrl->text());
return result;
}
/***************************************************************************
* class UBTGDraggableTreeItem *
***************************************************************************/
UBTGDraggableTreeItem::UBTGDraggableTreeItem(QWidget* parent, const char* name) : QTreeWidget(parent)
{
setObjectName(name);
}
QMimeData* UBTGDraggableTreeItem::mimeData(const QList<QTreeWidgetItem *> items) const
{
QMimeData* result = new QMimeData();
QList<QUrl> urls;
urls << QUrl(items.at(0)->data(0,TG_USER_ROLE_MIME_TYPE).toString());
result->setUrls(urls);
return result;
}