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UBSvgSubsetAdaptor.cpp
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UBSvgSubsetAdaptor.cpp
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/*
* Copyright (C) 2015-2022 Département de l'Instruction Publique (DIP-SEM)
*
* Copyright (C) 2013 Open Education Foundation
*
* Copyright (C) 2010-2013 Groupement d'Intérêt Public pour
* l'Education Numérique en Afrique (GIP ENA)
*
* This file is part of OpenBoard.
*
* OpenBoard 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, version 3 of the License,
* with a specific linking exception for the OpenSSL project's
* "OpenSSL" library (or with modified versions of it that use the
* same license as the "OpenSSL" library).
*
* OpenBoard 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 OpenBoard. If not, see <http://www.gnu.org/licenses/>.
*/
#include "UBSvgSubsetAdaptor.h"
#include <QObject>
#include <QtCore>
#include <QtXml>
#include <QGraphicsTextItem>
#include <QDomElement>
#include <QGraphicsVideoItem>
#include <QElapsedTimer>
#include "domain/UBGraphicsSvgItem.h"
#include "domain/UBGraphicsPixmapItem.h"
#include "domain/UBGraphicsPolygonItem.h"
#include "domain/UBGraphicsMediaItem.h"
#include "domain/UBGraphicsWidgetItem.h"
#include "domain/UBGraphicsPDFItem.h"
#include "domain/UBGraphicsTextItem.h"
#include "domain/UBGraphicsTextItemDelegate.h"
#include "domain/UBGraphicsStroke.h"
#include "domain/UBGraphicsStrokesGroup.h"
#include "domain/UBGraphicsGroupContainerItem.h"
#include "domain/UBGraphicsGroupContainerItemDelegate.h"
#include "domain/UBItem.h"
#include "tools/UBGraphicsRuler.h"
#include "tools/UBGraphicsAxes.h"
#include "tools/UBGraphicsCompass.h"
#include "tools/UBGraphicsProtractor.h"
#include "tools/UBGraphicsCurtainItem.h"
#include "tools/UBGraphicsTriangle.h"
#include "tools/UBGraphicsCache.h"
#include "document/UBDocumentProxy.h"
#include "board/UBBoardView.h"
#include "board/UBBoardController.h"
#include "board/UBDrawingController.h"
#include "board/UBBoardPaletteManager.h"
#include "frameworks/UBFileSystemUtils.h"
#include "frameworks/UBStringUtils.h"
#include "frameworks/UBFileSystemUtils.h"
#include "core/UBSettings.h"
#include "core/UBSetting.h"
#include "core/UBPersistenceManager.h"
#include "core/UBApplication.h"
#include "core/UBDisplayManager.h"
#include "core/UBTextTools.h"
#include "pdf/PDFRenderer.h"
#include "core/memcheck.h"
const QString UBSvgSubsetAdaptor::nsSvg = "http://www.w3.org/2000/svg";
const QString UBSvgSubsetAdaptor::nsXHtml = "http://www.w3.org/1999/xhtml";
const QString UBSvgSubsetAdaptor::nsXLink = "http://www.w3.org/1999/xlink";
const QString UBSvgSubsetAdaptor::xmlTrue = "true";
const QString UBSvgSubsetAdaptor::xmlFalse = "false";
const QString UBSvgSubsetAdaptor::sFontSizePrefix = "font-size:";
const QString UBSvgSubsetAdaptor::sPixelUnit = "px";
const QString UBSvgSubsetAdaptor::sFontWeightPrefix = "font-weight:";
const QString UBSvgSubsetAdaptor::sFontStylePrefix = "font-style:";
const QString UBSvgSubsetAdaptor::sFormerUniboardDocumentNamespaceUri = "http://www.mnemis.com/uniboard";
const QString tElement = "element";
const QString tGroup = "group";
const QString tStrokeGroup = "strokeGroup";
const QString tGroups = "groups";
const QString aId = "id";
QString UBSvgSubsetAdaptor::toSvgTransform(const QTransform& matrix)
{
return QString("matrix(%1, %2, %3, %4, %5, %6)")
.arg(matrix.m11(), 0 , 'g')
.arg(matrix.m12(), 0 , 'g')
.arg(matrix.m21(), 0 , 'g')
.arg(matrix.m22(), 0 , 'g')
.arg(matrix.dx(), 0 , 'g')
.arg(matrix.dy(), 0 , 'g');
}
QTransform UBSvgSubsetAdaptor::fromSvgTransform(const QString& transform)
{
QTransform matrix;
QString ts = transform;
ts.replace("matrix(", "");
ts.replace(")", "");
QStringList sl = ts.split(",");
if (sl.size() >= 6)
{
matrix.setMatrix(
sl.at(0).toFloat(),
sl.at(1).toFloat(),
0,
sl.at(2).toFloat(),
sl.at(3).toFloat(),
0,
sl.at(4).toFloat(),
sl.at(5).toFloat(),
1);
}
return matrix;
}
static bool itemZIndexComp(const QGraphicsItem* item1,
const QGraphicsItem* item2)
{
return item1->data(UBGraphicsItemData::ItemOwnZValue).toReal() < item2->data(UBGraphicsItemData::ItemOwnZValue).toReal();
}
void UBSvgSubsetAdaptor::upgradeScene(std::shared_ptr<UBDocumentProxy> proxy, const int pageIndex)
{
//4.2
QDomDocument doc = loadSceneDocument(proxy, pageIndex);
QDomElement elSvg = doc.documentElement(); // SVG tag
QString ubVersion = elSvg.attributeNS(UBSettings::uniboardDocumentNamespaceUri, "version", "4.1"); // default to 4.1
if (ubVersion.startsWith("4.1") || ubVersion.startsWith("4.2") || ubVersion.startsWith("4.3"))
{
// migrate to 4.2.1 (or latter)
std::shared_ptr<UBGraphicsScene> scene = loadScene(proxy, pageIndex);
scene->setModified(true);
persistScene(proxy, scene, pageIndex);
}
}
QDomDocument UBSvgSubsetAdaptor::loadSceneDocument(std::shared_ptr<UBDocumentProxy> proxy, const int pPageIndex)
{
QString fileName = proxy->persistencePath() + UBFileSystemUtils::digitFileFormat("/page%1.svg",pPageIndex);
QFile file(fileName);
QDomDocument doc("page");
if (file.exists())
{
if (!file.open(QIODevice::ReadOnly))
{
qWarning() << "Cannot open file " << fileName << " for reading ...";
return doc;
}
doc.setContent(&file, true);
file.close();
}
return doc;
}
void UBSvgSubsetAdaptor::setSceneUuid(std::shared_ptr<UBDocumentProxy> proxy, const int pageIndex, QUuid pUuid)
{
QString fileName = proxy->persistencePath() + UBFileSystemUtils::digitFileFormat("/page%1.svg",pageIndex);
QFile file(fileName);
if (!file.exists() || !file.open(QIODevice::ReadOnly))
return;
QTextStream textReadStream(&file);
QString xmlContent = textReadStream.readAll();
int uuidIndex = xmlContent.indexOf("uuid");
if (-1 == uuidIndex)
{
qWarning() << "Cannot read UUID from file" << fileName << "to set new UUID";
file.close();
return;
}
int quoteStartIndex = xmlContent.indexOf('"', uuidIndex);
if (-1 == quoteStartIndex)
{
qWarning() << "Cannot read UUID from file" << fileName << "to set new UUID";
file.close();
return;
}
int quoteEndIndex = xmlContent.indexOf('"', quoteStartIndex + 1);
if (-1 == quoteEndIndex)
{
qWarning() << "Cannot read UUID from file" << fileName << "to set new UUID";
file.close();
return;
}
file.close();
QString newXmlContent = xmlContent.left(quoteStartIndex + 1);
newXmlContent.append(UBStringUtils::toCanonicalUuid(pUuid));
newXmlContent.append(xmlContent.right(xmlContent.length() - quoteEndIndex));
if (file.open(QIODevice::WriteOnly | QIODevice::Truncate))
{
QTextStream textWriteStream(&file);
textWriteStream << newXmlContent;
file.close();
}
else
{
qWarning() << "Cannot open file" << fileName << "to write UUID";
}
}
QString UBSvgSubsetAdaptor::uniboardDocumentNamespaceUriFromVersion(int mFileVersion)
{
return mFileVersion >= 40200 ? UBSettings::uniboardDocumentNamespaceUri : sFormerUniboardDocumentNamespaceUri;
}
std::shared_ptr<UBGraphicsScene> UBSvgSubsetAdaptor::loadScene(std::shared_ptr<UBDocumentProxy> proxy, const int pageIndex)
{
UBApplication::showMessage(QObject::tr("Loading scene (%1/%2)").arg(pageIndex+1).arg(proxy->pageCount()));
QString fileName = proxy->persistencePath() + UBFileSystemUtils::digitFileFormat("/page%1.svg", pageIndex);
qDebug() << fileName;
QFile file(fileName);
if (file.exists())
{
if (!file.open(QIODevice::ReadOnly))
{
qWarning() << "Cannot open file " << fileName << " for reading ...";
return 0;
}
std::shared_ptr<UBGraphicsScene> scene = loadScene(proxy, file.readAll());
file.close();
return scene;
}
return 0;
}
QByteArray UBSvgSubsetAdaptor::loadSceneAsText(std::shared_ptr<UBDocumentProxy> proxy, const int pageIndex)
{
QString fileName = proxy->persistencePath() + UBFileSystemUtils::digitFileFormat("/page%1.svg", pageIndex);
qDebug() << fileName;
QFile file(fileName);
if (file.exists())
{
if (!file.open(QIODevice::ReadOnly))
{
qWarning() << "Cannot open file " << fileName << " for reading ...";
return "";
}
return file.readAll();
file.close();
}
return "";
}
QUuid UBSvgSubsetAdaptor::sceneUuid(std::shared_ptr<UBDocumentProxy> proxy, const int pageIndex)
{
QString fileName = proxy->persistencePath() + UBFileSystemUtils::digitFileFormat("/page%1.svg", pageIndex);
QFile file(fileName);
QUuid uuid;
if (file.exists())
{
if (!file.open(QIODevice::ReadOnly))
{
qWarning() << "Cannot open file " << fileName << " for reading ...";
return QUuid();
}
QXmlStreamReader xml(file.readAll());
bool foundSvg = false;
while (!xml.atEnd() && !foundSvg)
{
xml.readNext();
if (xml.isStartElement())
{
if (xml.name().toString() == "svg")
{
auto svgSceneUuid = xml.attributes().value(UBSettings::uniboardDocumentNamespaceUri, "uuid");
if (svgSceneUuid.isNull())
svgSceneUuid = xml.attributes().value("http://www.mnemis.com/uniboard", "uuid");
if (!svgSceneUuid.isNull())
uuid = QUuid(svgSceneUuid.toString());
foundSvg = true;
}
}
}
file.close();
}
return uuid;
}
std::shared_ptr<UBGraphicsScene> UBSvgSubsetAdaptor::loadScene(std::shared_ptr<UBDocumentProxy> proxy, const QByteArray& pArray)
{
UBSvgSubsetReader reader(proxy, UBTextTools::cleanHtmlCData(QString(pArray)).toUtf8());
return reader.loadScene(proxy);
}
UBSvgSubsetAdaptor::UBSvgSubsetReader::UBSvgSubsetReader(std::shared_ptr<UBDocumentProxy> pProxy, const QByteArray& pXmlData)
: mXmlReader(pXmlData)
, mProxy(pProxy)
, mDocumentPath(pProxy->persistencePath())
, mGroupHasInfo(false)
{
// NOOP
}
std::shared_ptr<UBGraphicsScene> UBSvgSubsetAdaptor::UBSvgSubsetReader::loadScene(std::shared_ptr<UBDocumentProxy> proxy)
{
qDebug() << "loadScene() : starting reading...";
QElapsedTimer time;
time.start();
mScene = nullptr;
UBGraphicsWidgetItem *currentWidget = 0;
//bool pageDpiSpecified = true;
saveSceneAfterLoading = false;
mFileVersion = 40100; // default to 4.1.0
UBGraphicsStrokesGroup* strokesGroup = 0;
UBGraphicsStroke* currentStroke = 0;
while (!mXmlReader.atEnd())
{
mXmlReader.readNext();
if (mXmlReader.isStartElement())
{
QString name = mXmlReader.name().toString();
if (name == "svg")
{
if (!mScene)
{
mScene = std::make_shared<UBGraphicsScene>(mProxy, false);
mScene->setModified(false);
}
// introduced in UB 4.2
auto svgUbVersion = mXmlReader.attributes().value(UBSettings::uniboardDocumentNamespaceUri, "version");
if (!svgUbVersion.isNull())
{
QString ubVersion = svgUbVersion.toString();
//may look like : 4 or 4.1 or 4.2 or 4.2.1, etc
QStringList parts = ubVersion.split(".");
if (parts.length() > 0)
{
mFileVersion = parts.at(0).toInt() * 10000;
}
if (parts.length() > 1)
{
mFileVersion += parts.at(1).toInt() * 100;
}
if (parts.length() > 2)
{
mFileVersion += parts.at(2).toInt();
}
}
mNamespaceUri = uniboardDocumentNamespaceUriFromVersion(mFileVersion);
auto svgSceneUuid = mXmlReader.attributes().value(mNamespaceUri, "uuid");
if (!svgSceneUuid.isNull())
mScene->setUuid(QUuid(svgSceneUuid.toString()));
// introduced in UB 4.0
auto svgViewBox = mXmlReader.attributes().value("viewBox");
if (!svgViewBox.isNull())
{
QStringList ts = svgViewBox.toString().split(QLatin1Char(' '), UB::SplitBehavior::SkipEmptyParts);
QRectF sceneRect;
if (ts.size() >= 4)
{
sceneRect.setX(ts.at(0).toFloat());
sceneRect.setY(ts.at(1).toFloat());
sceneRect.setWidth(ts.at(2).toFloat());
sceneRect.setHeight(ts.at(3).toFloat());
mScene->setSceneRect(sceneRect);
}
else
{
qWarning() << "cannot make sense of 'viewBox' value " << svgViewBox.toString();
}
}
auto pageDpi = mXmlReader.attributes().value("pageDpi");
if (!pageDpi.isNull())
proxy->setPageDpi(pageDpi.toInt());
else if (proxy->pageDpi() == 0) {
proxy->setPageDpi(UBApplication::displayManager->logicalDpi(ScreenRole::Control));
//pageDpiSpecified = false;
}
bool darkBackground = false;
bool crossedBackground = false;
bool ruledBackground = false;
auto ubDarkBackground = mXmlReader.attributes().value(mNamespaceUri, "dark-background");
if (!ubDarkBackground.isNull())
darkBackground = (ubDarkBackground.toString() == xmlTrue);
auto ubCrossedBackground = mXmlReader.attributes().value(mNamespaceUri, "crossed-background");
if (!ubCrossedBackground.isNull())
crossedBackground = (ubCrossedBackground.toString() == xmlTrue);
auto ubGridSize = mXmlReader.attributes().value(mNamespaceUri, "grid-size");
if (!ubGridSize.isNull()) {
int gridSize = ubGridSize.toInt();
mScene->setBackgroundGridSize(gridSize);
}
if (crossedBackground) {
auto ubIntermediateLines = mXmlReader.attributes().value(mNamespaceUri, "intermediate-lines");
if (!ubIntermediateLines.isNull()) {
bool intermediateLines = ubIntermediateLines.toInt();
mScene->setIntermediateLines(intermediateLines);
}
}
auto ubRuledBackground = mXmlReader.attributes().value(mNamespaceUri, "ruled-background");
if (!ubRuledBackground.isNull())
ruledBackground = (ubRuledBackground.toString() == xmlTrue);
if (ruledBackground && !crossedBackground) { // if for some reason both are true, the background will be a grid
auto ubIntermediateLines = mXmlReader.attributes().value(mNamespaceUri, "intermediate-lines");
if (!ubIntermediateLines.isNull()) {
bool intermediateLines = ubIntermediateLines.toInt();
mScene->setIntermediateLines(intermediateLines);
}
}
UBPageBackground bg;
if (crossedBackground)
bg = UBPageBackground::crossed;
else if (ruledBackground)
bg = UBPageBackground::ruled;
else
bg = UBPageBackground::plain;
mScene->setBackground(darkBackground, bg);
auto pageNominalSize = mXmlReader.attributes().value(mNamespaceUri, "nominal-size");
if (!pageNominalSize.isNull())
{
QStringList ts = pageNominalSize.toString().split(QLatin1Char('x'), UB::SplitBehavior::SkipEmptyParts);
QSize sceneSize;
if (ts.size() >= 2)
{
sceneSize.setWidth(ts.at(0).toInt());
sceneSize.setHeight(ts.at(1).toInt());
mScene->setNominalSize(sceneSize);
}
else
{
qWarning() << "cannot make sense of 'nominal-size' value " << pageNominalSize.toString();
}
}
}
else if (name == "g")
{
strokesGroup = new UBGraphicsStrokesGroup();
graphicsItemFromSvg(strokesGroup);
bool hasZValue;
qreal zValue = normalizedZValue(&hasZValue);
if (hasZValue)
{
mGroupZIndex = zValue;
mGroupHasInfo = true;
}
auto ubFillOnDarkBackground = mXmlReader.attributes().value(mNamespaceUri, "fill-on-dark-background");
if (!ubFillOnDarkBackground.isNull())
{
mGroupDarkBackgroundColor.setNamedColor(ubFillOnDarkBackground.toString());
}
auto ubFillOnLightBackground = mXmlReader.attributes().value(mNamespaceUri, "fill-on-light-background");
if (!ubFillOnLightBackground.isNull())
{
mGroupLightBackgroundColor.setNamedColor(ubFillOnLightBackground.toString());
}
auto ubUuid = mXmlReader.attributes().value(mNamespaceUri, "uuid");
if (!ubUuid.isNull())
strokesGroup->setUuid(QUuid(ubUuid.toString()));
else
strokesGroup->setUuid(QUuid::createUuid());
QString uuid_stripped = strokesGroup->uuid().toString().replace("}","").replace("{","");
if (!mStrokesList.contains(uuid_stripped))
mStrokesList.insert(uuid_stripped, strokesGroup);
}
else if (name == "polygon" || name == "line")
{
UBGraphicsPolygonItem* polygonItem = nullptr;
QString parentId = mXmlReader.attributes().value(mNamespaceUri, "parent").toString();
if (name == "polygon")
polygonItem = polygonItemFromPolygonSvg(mScene->isDarkBackground() ? Qt::white : Qt::black);
else if (name == "line")
polygonItem = polygonItemFromLineSvg(mScene->isDarkBackground() ? Qt::white : Qt::black);
if(parentId.isEmpty() && strokesGroup)
parentId = strokesGroup->uuid().toString();
if(parentId.isEmpty())
parentId = QUuid::createUuid().toString();
// strip UUID
parentId = parentId.replace("}","").replace("{","");
if (polygonItem)
{
polygonItem->setData(UBGraphicsItemData::ItemLayerType, QVariant(UBItemLayerType::Graphic));
UBGraphicsStrokesGroup* group;
if (!mStrokesList.contains(parentId))
{
group = new UBGraphicsStrokesGroup();
mStrokesList.insert(parentId,group);
group->setTransform(polygonItem->transform());
UBGraphicsItem::assignZValue(group, polygonItem->zValue());
}
else
group = mStrokesList.value(parentId);
if (!currentStroke)
currentStroke = new UBGraphicsStroke();
polygonItem->setStroke(currentStroke);
polygonItem->setStrokesGroup(group);
if (polygonItem->transform().isIdentity())
polygonItem->setTransform(group->transform());
group->addToGroup(polygonItem);
}
}
else if (name == "polyline")
{
QList<UBGraphicsPolygonItem*> polygonItems = polygonItemsFromPolylineSvg(mScene->isDarkBackground() ? Qt::white : Qt::black);
QString parentId = mXmlReader.attributes().value(mNamespaceUri, "parent").toString();
if(parentId.isEmpty() && strokesGroup)
parentId = strokesGroup->uuid().toString();
if(parentId.isEmpty())
parentId = QUuid::createUuid().toString();
// strip UUID
parentId = parentId.replace("}","").replace("{","");
foreach(UBGraphicsPolygonItem* polygonItem, polygonItems)
{
polygonItem->setData(UBGraphicsItemData::ItemLayerType, QVariant(UBItemLayerType::Graphic));
UBGraphicsStrokesGroup* group;
if(!mStrokesList.contains(parentId)){
group = new UBGraphicsStrokesGroup();
mStrokesList.insert(parentId,group);
group->setTransform(polygonItem->transform());
UBGraphicsItem::assignZValue(group, polygonItem->zValue());
}
else
group = mStrokesList.value(parentId);
if (!currentStroke)
currentStroke = new UBGraphicsStroke();
if(polygonItem->transform().isIdentity())
polygonItem->setTransform(group->transform());
group->addToGroup(polygonItem);
polygonItem->setStrokesGroup(group);
polygonItem->setStroke(currentStroke);
polygonItem->show();
}
}
else if (name == "image")
{
auto imageHref = mXmlReader.attributes().value(nsXLink, "href");
if (!imageHref.isNull())
{
QString href = imageHref.toString();
auto ubBackground = mXmlReader.attributes().value(mNamespaceUri, "background");
bool isBackground = (!ubBackground.isNull() && ubBackground.toString() == xmlTrue);
if (href.endsWith(".svg"))
{
UBGraphicsSvgItem* svgItem = svgItemFromSvg();
if (svgItem)
{
svgItem->setFlag(QGraphicsItem::ItemIsMovable, true);
svgItem->setFlag(QGraphicsItem::ItemIsSelectable, true);
mScene->addItem(svgItem);
if (isBackground)
mScene->setAsBackgroundObject(svgItem);
svgItem->show();
}
}
else
{
UBGraphicsPixmapItem* pixmapItem = pixmapItemFromSvg();
if (pixmapItem)
{
pixmapItem->setFlag(QGraphicsItem::ItemIsMovable, true);
pixmapItem->setFlag(QGraphicsItem::ItemIsSelectable, true);
mScene->addItem(pixmapItem);
if (isBackground)
mScene->setAsBackgroundObject(pixmapItem);
pixmapItem->show();
}
}
}
}
else if (name == "audio")
{
UBGraphicsMediaItem* audioItem = audioItemFromSvg();
if (audioItem)
{
audioItem->setFlag(QGraphicsItem::ItemIsMovable, true);
audioItem->setFlag(QGraphicsItem::ItemIsSelectable, true);
mScene->addItem(audioItem);
audioItem->show();
audioItem->play();
audioItem->pause();
}
}
else if (name == "video")
{
UBGraphicsMediaItem* videoItem = videoItemFromSvg();
if (videoItem)
{
videoItem->setFlag(QGraphicsItem::ItemIsMovable, true);
videoItem->setFlag(QGraphicsItem::ItemIsSelectable, true);
mScene->addItem(videoItem);
videoItem->show();
}
}
else if (name == "text")//This is for backward compatibility with proto text field prior to version 4.3
{
UBGraphicsTextItem* textItem = textItemFromSvg();
if (textItem)
{
textItem->setFlag(QGraphicsItem::ItemIsMovable, true);
textItem->setFlag(QGraphicsItem::ItemIsSelectable, true);
mScene->addItem(textItem);
textItem->show();
}
}
else if (name == "curtain")
{
UBGraphicsCurtainItem* mask = curtainItemFromSvg();
if (mask)
{
mScene->addItem(mask);
mScene->registerTool(mask);
}
}
else if (name == "ruler")
{
UBGraphicsRuler *ruler = rulerFromSvg();
if (ruler)
{
mScene->addItem(ruler);
mScene->registerTool(ruler);
}
}
else if (name == "axes")
{
UBGraphicsAxes *axes = axesFromSvg();
if (axes)
{
mScene->addItem(axes);
mScene->registerTool(axes);
}
}
else if (name == "compass")
{
UBGraphicsCompass *compass = compassFromSvg();
if (compass)
{
mScene->addItem(compass);
mScene->registerTool(compass);
}
}
else if (name == "protractor")
{
UBGraphicsProtractor *protractor = protractorFromSvg();
if (protractor)
{
mScene->addItem(protractor);
mScene->registerTool(protractor);
}
}
else if (name == "triangle")
{
UBGraphicsTriangle *triangle = triangleFromSvg();
if (triangle)
{
mScene->addItem(triangle);
mScene->registerTool(triangle);
}
}
else if (name == "cache")
{
UBGraphicsCache* cache = cacheFromSvg();
if(cache)
{
mScene->addItem(cache);
mScene->registerTool(cache);
UBApplication::boardController->notifyCache(true);
}
}
else if (name == "foreignObject")
{
QString href = mXmlReader.attributes().value(nsXLink, "href").toString();
QString src = mXmlReader.attributes().value(mNamespaceUri, "src").toString();
QString type = mXmlReader.attributes().value(mNamespaceUri, "type").toString();
bool isBackground = mXmlReader.attributes().value(mNamespaceUri, "background").toString() == xmlTrue;
qreal foreignObjectWidth = mXmlReader.attributes().value("width").toString().toFloat();
qreal foreignObjectHeight = mXmlReader.attributes().value("height").toString().toFloat();
if (href.contains(".pdf"))
{
UBGraphicsPDFItem* pdfItem = pdfItemFromPDF();
if (pdfItem)
{
qreal currentDpi = UBApplication::displayManager->logicalDpi(ScreenRole::Control);
// qDebug() << "currentDpi = " << currentDpi;
qreal pdfScale = qreal(proxy->pageDpi())/currentDpi;
// qDebug() << "pdfScale " << pdfScale;
// If the PDF is in the background, it occupies the whole page; so we can simply
// use that information to calculate its scale.
if (isBackground) {
qreal pageWidth = mScene->nominalSize().width();
qreal pageHeight = mScene->nominalSize().height();
qreal scaleX = pageWidth / pdfItem->sceneBoundingRect().width();
qreal scaleY = pageHeight / pdfItem->sceneBoundingRect().height();
pdfScale = (scaleX+scaleY)/2.;
}
pdfItem->setScale(pdfScale);
pdfItem->setFlag(QGraphicsItem::ItemIsMovable, true);
pdfItem->setFlag(QGraphicsItem::ItemIsSelectable, true);
mScene->addItem(pdfItem);
if (isBackground)
mScene->setAsBackgroundObject(pdfItem);
pdfItem->show();
currentWidget = 0;
}
}
else if (src.contains(".wdgt")) // NOTE @letsfindaway obsolete
{
UBGraphicsAppleWidgetItem* appleWidgetItem = graphicsAppleWidgetFromSvg();
if (appleWidgetItem)
{
appleWidgetItem->setFlag(QGraphicsItem::ItemIsSelectable, true);
appleWidgetItem->resize(foreignObjectWidth, foreignObjectHeight);
mScene->addItem(appleWidgetItem);
appleWidgetItem->show();
currentWidget = appleWidgetItem;
}
}
else if (src.contains(".wgt"))
{
UBGraphicsW3CWidgetItem* w3cWidgetItem = graphicsW3CWidgetFromSvg();
if (w3cWidgetItem)
{
// check compatibility
QUuid uuid(mXmlReader.attributes().value(mNamespaceUri, "uuid").toString());
if (!proxy->isWidgetCompatible(uuid))
{
// show a substitute image and freeze the widget
QPixmap pixmap(w3cWidgetItem->size().toSize());
pixmap.fill(Qt::lightGray);
QPainter painter(&pixmap);
QFont font = painter.font();
font.setPixelSize(16);
painter.setFont(font);
const QRectF rectangle(QPointF(0, 0), w3cWidgetItem->size());
std::string incompatibleWidgetMessage = QString("Incompatible widget (%1).").arg(w3cWidgetItem->metadatas().name).toStdString();
painter.drawText(rectangle, Qt::AlignCenter, QObject::tr(incompatibleWidgetMessage.c_str()));
w3cWidgetItem->setSnapshot(pixmap, true);
// disable user interactions
w3cWidgetItem->setFreezable(false);
w3cWidgetItem->setCanBeTool(false);
}
w3cWidgetItem->setFlag(QGraphicsItem::ItemIsSelectable, true);
w3cWidgetItem->resize(foreignObjectWidth, foreignObjectHeight);
mScene->addItem(w3cWidgetItem);
w3cWidgetItem->show();
currentWidget = w3cWidgetItem;
}
}
else if (type == "text")
{
UBGraphicsTextItem* textItem = textItemFromSvg();
if (textItem)
{
textItem->setFlag(QGraphicsItem::ItemIsMovable, true);
textItem->setFlag(QGraphicsItem::ItemIsSelectable, true);
textItem->activateTextEditor(false);
mScene->addItem(textItem);
textItem->show();
}
}
else
{
qWarning() << "Ignoring unknown foreignObject:" << href;
}
}
else if (currentWidget && (name == "preference"))
{
QString key = mXmlReader.attributes().value("key").toString();
QString value = mXmlReader.attributes().value("value").toString();
currentWidget->setPreference(key, value);
}
else if (currentWidget && (name == "datastoreEntry"))
{
QString key = mXmlReader.attributes().value("key").toString();
QString value = mXmlReader.attributes().value("value").toString();
currentWidget->setDatastoreEntry(key, value);
} else if (name == tGroups) {
//considering groups section at the end of the document
readGroupRoot();
}
else
{
// NOOP
}
}
else if (mXmlReader.isEndElement())
{
if (mXmlReader.name().toString() == "g")
{
mGroupHasInfo = false;
mGroupDarkBackgroundColor = QColor();
mGroupLightBackgroundColor = QColor();
strokesGroup = NULL;
currentStroke = NULL;
}
}
}
if (mXmlReader.hasError())
{
qWarning() << "error parsing file " << mXmlReader.errorString();
}
qDebug() << "Number of detected strokes: " << mStrokesList.count();
if (mScene) {
QHashIterator<QString, UBGraphicsStrokesGroup*> iterator(mStrokesList);
while (iterator.hasNext()) {
iterator.next();
mScene->addItem(iterator.value());
}
mScene->setModified(saveSceneAfterLoading);
mScene->enableUndoRedoStack();
}
qDebug() << "loadScene() : created scene and read file";