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create/src/Mod/TechDraw/Gui/QGVPage.cpp

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/***************************************************************************
* Copyright (c) 2013 Luke Parry <l.parry@warwick.ac.uk> *
* *
* This file is part of the FreeCAD CAx development system. *
* *
* This library is free software; you can redistribute it and/or *
* modify it under the terms of the GNU Library General Public *
* License as published by the Free Software Foundation; either *
* version 2 of the License, or (at your option) any later version. *
* *
* This library 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 Library General Public License for more details. *
* *
* You should have received a copy of the GNU Library General Public *
* License along with this library; see the file COPYING.LIB. If not, *
* write to the Free Software Foundation, Inc., 59 Temple Place, *
* Suite 330, Boston, MA 02111-1307, USA *
* *
***************************************************************************/
#include "PreCompiled.h"
#ifndef _PreComp_
# include <QAction>
# include <QApplication>
# include <QContextMenuEvent>
# include <QFileInfo>
# include <QFileDialog>
# include <QGLWidget>
# include <QGraphicsEffect>
# include <QMouseEvent>
# include <QPainter>
# include <QPaintEvent>
# include <QSvgGenerator>
#include <QScrollBar>
# include <QWheelEvent>
#include <QTemporaryFile>
#include <QDomDocument>
#include <QTextStream>
#include <QFile>
#include <QLabel>
#include <cmath>
#endif
#include <QXmlQuery>
#include <QXmlResultItems>
#include <App/Application.h>
#include <App/Document.h>
#include <App/Material.h>
#include <Base/Console.h>
#include <Base/Parameter.h>
#include <Base/Stream.h>
#include <Gui/FileDialog.h>
#include <Gui/Selection.h>
#include <Gui/WaitCursor.h>
#include <Gui/Command.h>
#include <Mod/TechDraw/App/Geometry.h>
#include <Mod/TechDraw/App/DrawPage.h>
#include <Mod/TechDraw/App/DrawTemplate.h>
#include <Mod/TechDraw/App/DrawSVGTemplate.h>
#include <Mod/TechDraw/App/DrawParametricTemplate.h>
#include <Mod/TechDraw/App/DrawViewCollection.h>
#include <Mod/TechDraw/App/DrawViewBalloon.h>
#include <Mod/TechDraw/App/DrawViewDimension.h>
#include <Mod/TechDraw/App/DrawProjGroup.h>
#include <Mod/TechDraw/App/DrawViewPart.h>
#include <Mod/TechDraw/App/DrawViewAnnotation.h>
#include <Mod/TechDraw/App/DrawViewSymbol.h>
#include <Mod/TechDraw/App/DrawViewClip.h>
#include <Mod/TechDraw/App/DrawHatch.h>
#include <Mod/TechDraw/App/DrawViewSpreadsheet.h>
#include <Mod/TechDraw/App/DrawViewImage.h>
#include <Mod/TechDraw/App/DrawLeaderLine.h>
#include <Mod/TechDraw/App/DrawRichAnno.h>
#include <Mod/TechDraw/App/DrawWeldSymbol.h>
#include <Mod/TechDraw/App/DrawTile.h>
#include <Mod/TechDraw/App/DrawTileWeld.h>
#include <Mod/TechDraw/App/QDomNodeModel.h>
#include <Mod/TechDraw/App/DrawUtil.h>
#include "Rez.h"
#include "QGIDrawingTemplate.h"
#include "QGITemplate.h"
#include "QGISVGTemplate.h"
#include "TemplateTextField.h"
#include "QGIViewCollection.h"
#include "QGIViewDimension.h"
#include "QGIViewBalloon.h"
#include "QGIProjGroup.h"
#include "QGIViewPart.h"
#include "QGIViewSection.h"
#include "QGIViewAnnotation.h"
#include "QGIViewSymbol.h"
#include "QGIViewClip.h"
#include "QGIViewSpreadsheet.h"
#include "QGIViewImage.h"
#include "QGIFace.h"
#include "QGILeaderLine.h"
#include "QGIRichAnno.h"
#include "QGIWeldSymbol.h"
#include "QGITile.h"
#include "ZVALUE.h"
#include "ViewProviderPage.h"
#include "QGVPage.h"
#include "MDIViewPage.h"
using namespace Gui;
using namespace TechDraw;
using namespace TechDrawGui;
QGVPage::QGVPage(ViewProviderPage *vp, QGraphicsScene* s, QWidget *parent)
: QGraphicsView(parent),
pageTemplate(0),
m_renderer(Native),
drawBkg(true),
m_vpPage(0),
panningActive(false)
{
assert(vp);
m_vpPage = vp;
const char* name = vp->getDrawPage()->getNameInDocument();
setObjectName(QString::fromLocal8Bit(name));
m_vpPage->setGraphicsView(this);
setScene(s);
setMouseTracking(true);
viewport()->setMouseTracking(true);
setViewportUpdateMode(QGraphicsView::SmartViewportUpdate);
setCacheMode(QGraphicsView::CacheBackground);
Base::Reference<ParameterGrp> hGrp = App::GetApplication().GetUserParameter()
.GetGroup("BaseApp")->GetGroup("Preferences")->GetGroup("View");
m_atCursor = hGrp->GetBool("ZoomAtCursor", 1l);
m_invertZoom = hGrp->GetBool("InvertZoom", 0l);
m_zoomIncrement = hGrp->GetFloat("ZoomStep",0.02);
hGrp = App::GetApplication().GetUserParameter()
.GetGroup("BaseApp")->GetGroup("Preferences")->GetGroup("Mod/TechDraw/General");
m_reversePan = hGrp->GetInt("KbPan",1);
m_reverseScroll = hGrp->GetInt("KbScroll",1);
if (m_atCursor) {
setResizeAnchor(AnchorUnderMouse);
setTransformationAnchor(AnchorUnderMouse);
} else {
setResizeAnchor(AnchorViewCenter);
setTransformationAnchor(AnchorViewCenter);
}
setAlignment(Qt::AlignCenter);
setDragMode(ScrollHandDrag);
setCursor(QCursor(Qt::ArrowCursor));
setRenderHints(QPainter::Antialiasing | QPainter::SmoothPixmapTransform);
bkgBrush = new QBrush(getBackgroundColor());
balloonCursor = new QLabel(this);
balloonCursor->setPixmap(QPixmap(QString::fromUtf8(":/icons/cursor-balloon.png")));
balloonCursor->hide();
resetCachedContent();
}
QGVPage::~QGVPage()
{
delete bkgBrush;
}
void QGVPage::cancelBalloonPlacing(void)
{
getDrawPage()->balloonPlacing = false;
balloonCursor->hide();
QApplication::restoreOverrideCursor();
}
void QGVPage::drawBackground(QPainter *p, const QRectF &)
{
//Note: Background is not part of scene()
if(!drawBkg)
return;
if(!m_vpPage) {
return;
}
if (!m_vpPage->getDrawPage()) {
//Base::Console().Log("TROUBLE - QGVP::drawBackground - no Page Object!\n");
return;
}
p->save();
p->resetTransform();
p->setBrush(*bkgBrush);
p->drawRect(viewport()->rect().adjusted(-2,-2,2,2)); //just bigger than viewport to prevent artifacts
// Default to A3 landscape, though this is currently relevant
// only for opening corrupt docs, etc.
float pageWidth = 420,
pageHeight = 297;
if ( m_vpPage->getDrawPage()->hasValidTemplate() ) {
pageWidth = Rez::guiX(m_vpPage->getDrawPage()->getPageWidth());
pageHeight = Rez::guiX(m_vpPage->getDrawPage()->getPageHeight());
}
// Draw the white page
QRectF paperRect(0, -pageHeight, pageWidth, pageHeight);
QPolygon poly = mapFromScene(paperRect);
QBrush pageBrush(Qt::white);
p->setBrush(pageBrush);
p->drawRect(poly.boundingRect());
p->restore();
}
//! retrieve the QGIView objects currently in the scene
std::vector<QGIView *> QGVPage::getViews() const
{
std::vector<QGIView*> result;
QList<QGraphicsItem*> items = scene()->items();
for (auto& v:items) {
QGIView* qv = dynamic_cast<QGIView*>(v);
if (qv != nullptr) {
result.push_back(qv);
}
}
return result;
}
int QGVPage::addQView(QGIView *view)
{
//don't add twice!
QGIView* existing = getQGIVByName(view->getViewName());
if (existing == nullptr) {
auto ourScene( scene() );
assert(ourScene);
ourScene->addItem(view);
// Find if it belongs to a parent
QGIView *parent = 0;
parent = findParent(view);
QPointF viewPos(Rez::guiX(view->getViewObject()->X.getValue()),
Rez::guiX(view->getViewObject()->Y.getValue() * -1));
if(parent) {
// move child view to center of parent
QPointF posRef(0.,0.);
QPointF mapPos = view->mapToItem(parent, posRef);
view->moveBy(-mapPos.x(), -mapPos.y());
parent->addToGroup(view);
}
view->setPos(viewPos);
view->updateView(true);
}
return 0;
}
int QGVPage::removeQView(QGIView *view)
{
if (view != nullptr) {
removeQViewFromScene(view);
delete view;
}
return 0;
}
int QGVPage::removeQViewByName(const char* name)
{
std::vector<QGIView*> items = getViews();
QString qsName = QString::fromUtf8(name);
bool found = false;
QGIView* ourItem = nullptr;
for (auto& i:items) {
if (qsName == i->data(1).toString()) { //is there a QGIV with this name in scene?
found = true;
ourItem = i;
break;
}
}
if (found) {
int balloonItemType = QGraphicsItem::UserType + 140;
if (ourItem->type() == balloonItemType) {
QGIViewBalloon* balloon = dynamic_cast<QGIViewBalloon*>(ourItem);
balloon->disconnect();
}
removeQViewFromScene(ourItem);
delete ourItem;
}
return 0;
}
void QGVPage::removeQViewFromScene(QGIView *view)
{
QGraphicsItemGroup* grp = view->group();
if (grp) {
grp->removeFromGroup(view);
}
if (view->parentItem()) { //not top level
view->setParentItem(0);
}
if (view->scene()) {
view->scene()->removeItem(view);
}
}
QGIView * QGVPage::addViewPart(TechDraw::DrawViewPart *part)
{
QGIView* existing = findQViewForDocObj(part);
if (existing != nullptr) {
return existing;
}
auto viewPart( new QGIViewPart );
viewPart->setViewPartFeature(part);
addQView(viewPart);
return viewPart;
}
QGIView * QGVPage::addViewSection(TechDraw::DrawViewPart *part)
{
auto viewSection( new QGIViewSection );
viewSection->setViewPartFeature(part);
addQView(viewSection);
return viewSection;
}
QGIView * QGVPage::addProjectionGroup(TechDraw::DrawProjGroup *view) {
auto qview( new QGIProjGroup );
qview->setViewFeature(view);
addQView(qview);
return qview;
}
QGIView * QGVPage::addDrawView(TechDraw::DrawView *view)
{
auto qview( new QGIView );
qview->setViewFeature(view);
addQView(qview);
return qview;
}
QGIView * QGVPage::addDrawViewCollection(TechDraw::DrawViewCollection *view)
{
auto qview( new QGIViewCollection );
qview->setViewFeature(view);
addQView(qview);
return qview;
}
// TODO change to (App?) annotation object ??
QGIView * QGVPage::addDrawViewAnnotation(TechDraw::DrawViewAnnotation *view)
{
auto qview( new QGIViewAnnotation );
qview->setViewAnnoFeature(view);
addQView(qview);
return qview;
}
QGIView * QGVPage::addDrawViewSymbol(TechDraw::DrawViewSymbol *view)
{
auto qview( new QGIViewSymbol );
qview->setViewFeature(view);
addQView(qview);
return qview;
}
QGIView * QGVPage::addDrawViewClip(TechDraw::DrawViewClip *view)
{
auto qview( new QGIViewClip );
qview->setPosition(Rez::guiX(view->X.getValue()), Rez::guiX(view->Y.getValue()));
qview->setViewFeature(view);
addQView(qview);
return qview;
}
QGIView * QGVPage::addDrawViewSpreadsheet(TechDraw::DrawViewSpreadsheet *view)
{
auto qview( new QGIViewSpreadsheet );
qview->setViewFeature(view);
addQView(qview);
return qview;
}
QGIView * QGVPage::addDrawViewImage(TechDraw::DrawViewImage *view)
{
auto qview( new QGIViewImage );
qview->setViewFeature(view);
addQView(qview);
return qview;
}
QGIView * QGVPage::addViewBalloon(TechDraw::DrawViewBalloon *balloon)
{
auto vBalloon( new QGIViewBalloon );
auto ourScene( scene() );
assert(ourScene);
ourScene->addItem(vBalloon);
vBalloon->setViewPartFeature(balloon);
vBalloon->dvBalloon = balloon;
QGIView *parent = 0;
parent = findParent(vBalloon);
if(parent)
addBalloonToParent(vBalloon,parent);
if (getDrawPage()->balloonPlacing) {
vBalloon->placeBalloon(balloon->origin);
cancelBalloonPlacing();
}
return vBalloon;
}
void QGVPage::addBalloonToParent(QGIViewBalloon* balloon, QGIView* parent)
{
assert(balloon);
assert(parent); //blow up if we don't have Dimension or Parent
QPointF posRef(0.,0.);
QPointF mapPos = balloon->mapToItem(parent, posRef);
balloon->moveBy(-mapPos.x(), -mapPos.y());
parent->addToGroup(balloon);
balloon->setZValue(ZVALUE::DIMENSION);
}
QGIView * QGVPage::addViewDimension(TechDraw::DrawViewDimension *dim)
{
auto dimGroup( new QGIViewDimension );
auto ourScene( scene() );
assert(ourScene);
ourScene->addItem(dimGroup);
dimGroup->setViewPartFeature(dim);
// Find if it belongs to a parent
QGIView *parent = 0;
parent = findParent(dimGroup);
if(parent) {
addDimToParent(dimGroup,parent);
}
return dimGroup;
}
void QGVPage::addDimToParent(QGIViewDimension* dim, QGIView* parent)
{
assert(dim);
assert(parent); //blow up if we don't have Dimension or Parent
QPointF posRef(0.,0.);
QPointF mapPos = dim->mapToItem(parent, posRef);
dim->moveBy(-mapPos.x(), -mapPos.y());
parent->addToGroup(dim);
dim->setZValue(ZVALUE::DIMENSION);
}
QGIView * QGVPage::addViewLeader(TechDraw::DrawLeaderLine *leader)
{
// Base::Console().Message("QGVP::addViewLeader(%s)\n",leader->getNameInDocument());
QGILeaderLine* leaderGroup = nullptr;
App::DocumentObject* parentObj = leader->LeaderParent.getValue();
TechDraw::DrawView* parentDV = dynamic_cast<TechDraw::DrawView*>(parentObj);
//NOTE: if Leaders are ever allowed to not be attached to a View, this next bit will have to change
if (parentDV != nullptr) {
QGIView* parentQV = findQViewForDocObj(parentObj);
if (parentQV != nullptr) {
leaderGroup = new QGILeaderLine(parentQV, leader);
leaderGroup->updateView(true); //this is different from everybody else,
//but it works.
return leaderGroup;
}
} else {
throw Base::TypeError("QGVP::addViewLeader - parent DV has no QGIV");
}
return nullptr;
}
void QGVPage::addLeaderToParent(QGILeaderLine* lead, QGIView* parent)
{
assert(lead);
assert(parent); //blow up if we don't have Leader or Parent
QPointF posRef(0.,0.);
QPointF mapPos = lead->mapToItem(parent, posRef);
lead->moveBy(-mapPos.x(), -mapPos.y());
parent->addToGroup(lead); //vs lead->setParentItem(parent)??
lead->setZValue(ZVALUE::DIMENSION);
}
QGIView * QGVPage::addRichAnno(TechDraw::DrawRichAnno* anno)
{
QGIRichAnno* annoGroup = nullptr;
TechDraw::DrawView* parentDV = nullptr;
App::DocumentObject* parentObj = anno->AnnoParent.getValue();
if (parentObj != nullptr) {
parentDV = dynamic_cast<TechDraw::DrawView*>(parentObj);
}
if (parentDV != nullptr) {
QGIView* parentQV = findQViewForDocObj(parentObj);
annoGroup = new QGIRichAnno(parentQV, anno);
annoGroup->updateView(true);
} else {
annoGroup = new QGIRichAnno(nullptr, anno);
if (annoGroup->scene() == nullptr) {
scene()->addItem(annoGroup);
}
annoGroup->updateView(true);
}
return annoGroup;
}
QGIView * QGVPage::addWeldSymbol(TechDraw::DrawWeldSymbol* weld)
{
// Base::Console().Message("QGVP::addWeldSymbol()\n");
QGIWeldSymbol* weldGroup = nullptr;
TechDraw::DrawView* parentDV = nullptr;
App::DocumentObject* parentObj = weld->Leader.getValue();
if (parentObj != nullptr) {
parentDV = dynamic_cast<TechDraw::DrawView*>(parentObj);
} else {
// Base::Console().Message("QGVP::addWeldSymbol - no parent doc obj\n");
}
if (parentDV != nullptr) {
QGIView* parentQV = findQViewForDocObj(parentObj);
QGILeaderLine* leadParent = dynamic_cast<QGILeaderLine*>(parentQV);
if (leadParent != nullptr) {
weldGroup = new QGIWeldSymbol(leadParent);
weldGroup->setFeature(weld); //for QGIWS
weldGroup->setViewFeature(weld); //for QGIV
weldGroup->updateView(true);
} else {
Base::Console().Error("QGVP::addWeldSymbol - no parent QGILL\n");
}
} else {
Base::Console().Error("QGVP::addWeldSymbol - parent is not DV!\n");
}
return weldGroup;
}
//! find the graphic for a DocumentObject
QGIView * QGVPage::findQViewForDocObj(App::DocumentObject *obj) const
{
if(obj) {
const std::vector<QGIView *> qviews = getViews();
for(std::vector<QGIView *>::const_iterator it = qviews.begin(); it != qviews.end(); ++it) {
if(strcmp(obj->getNameInDocument(), (*it)->getViewName()) == 0)
return *it;
}
}
return 0;
}
//! find the graphic for DocumentObject with name
QGIView* QGVPage::getQGIVByName(std::string name)
{
QList<QGraphicsItem*> qgItems = scene()->items();
QList<QGraphicsItem*>::iterator it = qgItems.begin();
for (; it != qgItems.end(); it++) {
QGIView* qv = dynamic_cast<QGIView*>((*it));
if (qv) {
const char* qvName = qv->getViewName();
if(name.compare(qvName) == 0) {
return (qv);
}
}
}
return nullptr;
}
QGIView * QGVPage::findParent(QGIView *view) const
{
const std::vector<QGIView *> qviews = getViews();
TechDraw::DrawView *myFeat = view->getViewObject();
//If type is dimension we check references first
TechDraw::DrawViewDimension *dim = 0;
dim = dynamic_cast<TechDraw::DrawViewDimension *>(myFeat);
if(dim) {
std::vector<App::DocumentObject *> objs = dim->References2D.getValues();
if(objs.size() > 0) {
std::vector<App::DocumentObject *> objs = dim->References2D.getValues();
// Attach the dimension to the first object's group
for(std::vector<QGIView *>::const_iterator it = qviews.begin(); it != qviews.end(); ++it) {
if(strcmp((*it)->getViewName(), objs.at(0)->getNameInDocument()) == 0) {
return *it;
}
}
}
}
//If type is balloon we check references first
TechDraw::DrawViewBalloon *balloon = 0;
balloon = dynamic_cast<TechDraw::DrawViewBalloon *>(myFeat);
if(balloon) {
App::DocumentObject* obj = balloon->sourceView.getValue();
if(obj) {
// Attach the dimension to the first object's group
for(std::vector<QGIView *>::const_iterator it = qviews.begin(); it != qviews.end(); ++it) {
if(strcmp((*it)->getViewName(), obj->getNameInDocument()) == 0) {
return *it;
}
}
}
}
// Check if part of view collection
for(std::vector<QGIView *>::const_iterator it = qviews.begin(); it != qviews.end(); ++it) {
QGIViewCollection *grp = 0;
grp = dynamic_cast<QGIViewCollection *>(*it);
if(grp) {
TechDraw::DrawViewCollection *collection = 0;
collection = dynamic_cast<TechDraw::DrawViewCollection *>(grp->getViewObject());
if(collection) {
std::vector<App::DocumentObject *> objs = collection->Views.getValues();
for( std::vector<App::DocumentObject *>::iterator it = objs.begin(); it != objs.end(); ++it) {
if(strcmp(myFeat->getNameInDocument(), (*it)->getNameInDocument()) == 0)
return grp;
}
}
}
}
//If type is LeaderLine we check LeaderParent
TechDraw::DrawLeaderLine *lead = 0;
lead = dynamic_cast<TechDraw::DrawLeaderLine *>(myFeat);
if(lead) {
App::DocumentObject* obj = lead->LeaderParent.getValue();
if(obj != nullptr) {
std::string parentName = obj->getNameInDocument();
for(std::vector<QGIView *>::const_iterator it = qviews.begin(); it != qviews.end(); ++it) {
if(strcmp((*it)->getViewName(), parentName.c_str()) == 0) {
return *it;
}
}
}
}
// Not found a parent
return nullptr;
}
void QGVPage::setPageTemplate(TechDraw::DrawTemplate *obj)
{
removeTemplate();
if(obj->isDerivedFrom(TechDraw::DrawParametricTemplate::getClassTypeId())) {
pageTemplate = new QGIDrawingTemplate(scene());
} else if(obj->isDerivedFrom(TechDraw::DrawSVGTemplate::getClassTypeId())) {
pageTemplate = new QGISVGTemplate(scene());
}
pageTemplate->setTemplate(obj);
pageTemplate->updateView();
}
QGITemplate* QGVPage::getTemplate() const
{
return pageTemplate;
}
void QGVPage::removeTemplate()
{
if(pageTemplate) {
scene()->removeItem(pageTemplate);
pageTemplate->deleteLater();
pageTemplate = 0;
}
}
void QGVPage::setRenderer(RendererType type)
{
m_renderer = type;
if (m_renderer == OpenGL) {
#ifndef QT_NO_OPENGL
setViewport(new QGLWidget(QGLFormat(QGL::SampleBuffers)));
#endif
} else {
setViewport(new QWidget);
}
}
void QGVPage::setHighQualityAntialiasing(bool highQualityAntialiasing)
{
#ifndef QT_NO_OPENGL
setRenderHint(QPainter::HighQualityAntialiasing, highQualityAntialiasing);
#else
Q_UNUSED(highQualityAntialiasing);
#endif
}
void QGVPage::refreshViews(void)
{
// Base::Console().Message("QGVP::refreshViews()\n");
QList<QGraphicsItem*> list = scene()->items();
QList<QGraphicsItem*> qgiv;
//find only QGIV's
for (auto q: list) {
QString tileFamily = QString::fromUtf8("QGIV");
if (tileFamily == q->data(0).toString()) {
qgiv.push_back(q);
}
}
for (auto q: qgiv) {
QGIView *itemView = dynamic_cast<QGIView *>(q);
if(itemView) {
itemView->updateView(true);
}
}
}
void QGVPage::toggleHatch(bool enable)
{
QList<QGraphicsItem*> sceneItems = scene()->items();
for (auto& qgi:sceneItems) {
QGIViewPart* qgiPart = dynamic_cast<QGIViewPart *>(qgi);
if(qgiPart) {
QList<QGraphicsItem*> partChildren = qgiPart->childItems();
int faceItemType = QGraphicsItem::UserType + 104;
for (auto& c:partChildren) {
if (c->type() == faceItemType) {
static_cast<QGIFace*>(c)->toggleSvg(enable);
}
}
}
}
}
void QGVPage::saveSvg(QString filename)
{
// TODO: We only have m_vpPage because constructor gets passed a view provider...
//NOTE: this makes wrong size pages in low-Rez
TechDraw::DrawPage *page( m_vpPage->getDrawPage() );
const QString docName( QString::fromUtf8(page->getDocument()->getName()) );
const QString pageName( QString::fromUtf8(page->getNameInDocument()) );
QString svgDescription = tr("Drawing page:") + QString::fromUtf8(" ") +
pageName +
tr(" exported from FreeCAD document:") + QString::fromUtf8(" ") +
docName;
QSvgGenerator svgGen;
QTemporaryFile temporaryFile;
svgGen.setOutputDevice(&temporaryFile);
// Set resolution in DPI. Use the actual one, i.e. Rez::guiX(inch)
svgGen.setResolution(Rez::guiX(25.4));
// Set size in pixels, which Qt recomputes using DPI to mm.
int pixelWidth = Rez::guiX(page->getPageWidth());
int pixelHeight = Rez::guiX(page->getPageHeight());
svgGen.setSize(QSize(pixelWidth, pixelHeight));
//"By default this property is set to QSize(-1, -1), which indicates that the generator should not output
// the width and height attributes of the <svg> element." >> but Inkscape won't read it without size info??
svgGen.setViewBox(QRect(0, 0, pixelWidth, pixelHeight));
svgGen.setTitle(QObject::tr("FreeCAD SVG Export"));
svgGen.setDescription(svgDescription);
Gui::Selection().clearSelection();
bool saveState = m_vpPage->getFrameState();
m_vpPage->setFrameState(false);
m_vpPage->setTemplateMarkers(false);
toggleHatch(false);
// Here we temporarily hide the page template, because Qt would otherwise convert the SVG template
// texts into series of paths, making the later document edits practically unfeasible.
// We will insert the SVG template ourselves in the final XML postprocessing operation.
QGISVGTemplate *svgTemplate = dynamic_cast<QGISVGTemplate *>(pageTemplate);
bool templateVisible = false;
if (svgTemplate) {
templateVisible = svgTemplate->isVisible();
svgTemplate->hide();
}
refreshViews();
viewport()->repaint();
double width = Rez::guiX(page->getPageWidth());
double height = Rez::guiX(page->getPageHeight());
QRectF sourceRect(0.0,-height,width,height);
QRectF targetRect(0.0,0.0,width,height);
Gui::Selection().clearSelection();
QPainter p;
p.begin(&svgGen);
scene()->render(&p, targetRect,sourceRect);
p.end();
m_vpPage->setFrameState(saveState);
m_vpPage->setTemplateMarkers(saveState);
toggleHatch(true);
if (templateVisible) {
svgTemplate->show();
}
refreshViews();
viewport()->repaint();
temporaryFile.close();
postProcessXml(temporaryFile, filename, pageName);
}
void QGVPage::postProcessXml(QTemporaryFile& temporaryFile, QString fileName, QString pageName)
{
QDomDocument exportDoc(QString::fromUtf8("SvgDoc"));
QFile file(temporaryFile.fileName());
if (!file.open(QIODevice::ReadOnly)) {
Base::Console().Message("QGVPage::ppsvg - tempfile open error\n");
return;
}
if (!exportDoc.setContent(&file)) {
Base::Console().Message("QGVPage::ppsvg - xml error\n");
file.close();
return;
}
file.close();
QDomElement exportDocElem = exportDoc.documentElement(); //root <svg>
// Insert Freecad SVG namespace into namespace declarations
exportDocElem.setAttribute(QString::fromUtf8("xmlns:freecad"),
QString::fromUtf8(FREECAD_SVG_NS_URI));
// Create the root group which will host the drawing group and the template group
QDomElement rootGroup = exportDoc.createElement(QString::fromUtf8("g"));
rootGroup.setAttribute(QString::fromUtf8("id"), pageName);
// Now insert our template
QGISVGTemplate *svgTemplate = dynamic_cast<QGISVGTemplate *>(pageTemplate);
if (svgTemplate) {
DrawSVGTemplate *drawTemplate = svgTemplate->getSVGTemplate();
if (drawTemplate) {
QFile templateResultFile(QString::fromUtf8(drawTemplate->PageResult.getValue()));
if (templateResultFile.open(QIODevice::ReadOnly)) {
QDomDocument templateResultDoc(QString::fromUtf8("SvgDoc"));
if (templateResultDoc.setContent(&templateResultFile)) {
QDomElement templateDocElem = templateResultDoc.documentElement();
// Insert the template into a new group with id set to template name
QDomElement templateGroup = exportDoc.createElement(QString::fromUtf8("g"));
Base::FileInfo fi(drawTemplate->Template.getValue());
templateGroup.setAttribute(QString::fromUtf8("id"),
QString::fromUtf8(fi.fileName().c_str()));
templateGroup.setAttribute(QString::fromUtf8("style"),
QString::fromUtf8("stroke: none;"));
// Scale the template group correctly
templateGroup.setAttribute(QString::fromUtf8("transform"),
QString().sprintf("scale(%f, %f)", Rez::guiX(1.0), Rez::guiX(1.0)));
// Finally, transfer all template document child nodes under the template group
while (!templateDocElem.firstChild().isNull()) {
templateGroup.appendChild(templateDocElem.firstChild());
}
rootGroup.appendChild(templateGroup);
}
}
}
}
QXmlQuery query(QXmlQuery::XQuery10);
QDomNodeModel model(query.namePool(), exportDoc);
query.setFocus(QXmlItem(model.fromDomNode(exportDocElem)));
// XPath query to select first <g> node as direct <svg> element descendant
query.setQuery(QString::fromUtf8(
"declare default element namespace \"" SVG_NS_URI "\"; "
"declare namespace freecad=\"" FREECAD_SVG_NS_URI "\"; "
"/svg/g[1]"));
QXmlResultItems queryResult;
query.evaluateTo(&queryResult);
// Obtain the drawing group element, move it under root node and set its id to "DrawingContent"
QDomElement drawingGroup;
if (!queryResult.next().isNull()) {
drawingGroup = model.toDomNode(queryResult.current().toNodeModelIndex()).toElement();
drawingGroup.setAttribute(QString::fromUtf8("id"), QString::fromUtf8("DrawingContent"));
rootGroup.appendChild(drawingGroup);
}
exportDocElem.appendChild(rootGroup);
// As icing on the cake, get rid of the empty <g>'s Qt SVG generator painting inserts.
// XPath query to select any <g> element anywhere with no child nodes whatsoever
query.setQuery(QString::fromUtf8(
"declare default element namespace \"" SVG_NS_URI "\"; "
"declare namespace freecad=\"" FREECAD_SVG_NS_URI "\"; "
"//g[not(*)]"));
query.evaluateTo(&queryResult);
while (!queryResult.next().isNull()) {
QDomElement g(model.toDomNode(queryResult.current().toNodeModelIndex()).toElement());
g.parentNode().removeChild(g);
}
// Time to save our product
QFile outFile( fileName );
if( !outFile.open( QIODevice::WriteOnly | QIODevice::Text ) ) {
Base::Console().Message("QGVP::ppxml - failed to open file for writing: %s\n",qPrintable(fileName) );
}
QTextStream stream( &outFile );
stream << exportDoc.toString();
outFile.close();
}
void QGVPage::paintEvent(QPaintEvent *event)
{
if (m_renderer == Image) {
if (m_image.size() != viewport()->size()) {
m_image = QImage(viewport()->size(), QImage::Format_ARGB32_Premultiplied);
}
QPainter imagePainter(&m_image);
QGraphicsView::render(&imagePainter);
imagePainter.end();
QPainter p(viewport());
p.drawImage(0, 0, m_image);
} else {
QGraphicsView::paintEvent(event);
}
}
void QGVPage::wheelEvent(QWheelEvent *event)
{
//Delta is the distance that the wheel is rotated, in eighths of a degree.
//positive indicates rotation forwards away from the user; negative backwards toward the user.
//Most mouse types work in steps of 15 degrees, in which case the delta value is a multiple of 120; i.e., 120 units * 1/8 = 15 degrees.
//1 click = 15 degrees. 15 degrees = 120 deltas. delta/240 -> 1 click = 0.5 ==> factor = 1.2^0.5 = 1.095
// 1 click = -0.5 ==> factor = 1.2^-0.5 = 0.91
//so to change wheel direction, multiply (event->delta() / 240.0) by +/-1
double mouseBase = 1.2; //magic numbers. change for different mice?
double mouseAdjust = -240.0;
if (m_invertZoom) {
mouseAdjust = -mouseAdjust;
}
QPointF center = mapToScene(viewport()->rect().center());
qreal factor = std::pow(mouseBase, event->delta() / mouseAdjust);
scale(factor, factor);
QPointF newCenter = mapToScene(viewport()->rect().center());
QPointF change = newCenter - center;
translate(change.x(), change.y());
event->accept();
}
void QGVPage::keyPressEvent(QKeyEvent *event)
{
if(event->modifiers().testFlag(Qt::ControlModifier)) {
switch(event->key()) {
case Qt::Key_Plus: {
scale(1.0 + m_zoomIncrement, 1.0 + m_zoomIncrement);
break;
}
case Qt::Key_Minus: {
scale(1.0 - m_zoomIncrement, 1.0 - m_zoomIncrement);
break;
}
default: {
break;
}
}
}
if(event->modifiers().testFlag( Qt::NoModifier)) {
switch(event->key()) {
case Qt::Key_Left: {
kbPanScroll(1, 0);
break;
}
case Qt::Key_Up: {
kbPanScroll(0, 1);
break;
}
case Qt::Key_Right: {
kbPanScroll(-1, 0);
break;
}
case Qt::Key_Down: {
kbPanScroll(0, -1);
break;
}
case Qt::Key_Escape: {
cancelBalloonPlacing();
break;
}
default: {
break;
}
}
}
QGraphicsView::keyPressEvent(event);
}
void QGVPage::focusOutEvent(QFocusEvent *event) {
Q_UNUSED(event);
cancelBalloonPlacing();
}
void QGVPage::kbPanScroll(int xMove, int yMove)
{
if (xMove != 0) {
QScrollBar* hsb = horizontalScrollBar();
// int hRange = hsb->maximum() - hsb->minimum(); //default here is 100?
// int hDelta = xMove/hRange
int hStep = hsb->singleStep() * xMove * m_reversePan;
int hNow = hsb->value();
hsb->setValue(hNow + hStep);
}
if (yMove != 0) {
QScrollBar* vsb = verticalScrollBar();
int vStep = vsb->singleStep() * yMove * m_reverseScroll;
int vNow = vsb->value();
vsb->setValue(vNow + vStep);
}
}
void QGVPage::enterEvent(QEvent *event)
{
QGraphicsView::enterEvent(event);
if(getDrawPage()->balloonPlacing) {
balloonCursor->hide();
QApplication::setOverrideCursor(QCursor(QPixmap(QString::fromUtf8(":/icons/cursor-balloon.png")),0,32));
} else {
QApplication::restoreOverrideCursor();
viewport()->setCursor(Qt::ArrowCursor);
}
}
void QGVPage::leaveEvent(QEvent * event)
{
QApplication::restoreOverrideCursor();
if(getDrawPage()->balloonPlacing) {
int left_x;
if (balloonCursorPos.x() < 32)
left_x = 0;
else if (balloonCursorPos.x() > (this->contentsRect().right() - 32))
left_x = this->contentsRect().right() - 32;
else
left_x = balloonCursorPos.x();
int left_y;
if (balloonCursorPos.y() < 32)
left_y = 0;
else if (balloonCursorPos.y() > (this->contentsRect().bottom() - 32))
left_y = this->contentsRect().bottom() - 32;
else
left_y = balloonCursorPos.y();
/* When cursor leave the page, display balloonCursor where it left */
balloonCursor->setGeometry(left_x ,left_y, 32, 32);
balloonCursor->show();
}
QGraphicsView::leaveEvent(event);
}
void QGVPage::mousePressEvent(QMouseEvent *event)
{
if (event->button() == Qt::MiddleButton) {
panOrigin = event->pos();
panningActive = true;
event->accept();
QApplication::setOverrideCursor(Qt::ClosedHandCursor);
}
QGraphicsView::mousePressEvent(event);
}
void QGVPage::mouseMoveEvent(QMouseEvent *event)
{
balloonCursorPos = event->pos();
if (panningActive) {
QScrollBar *horizontalScrollbar = horizontalScrollBar();
QScrollBar *verticalScrollbar = verticalScrollBar();
QPoint direction = event->pos() - panOrigin;
horizontalScrollbar->setValue(horizontalScrollbar->value() - m_reversePan*direction.x());
verticalScrollbar->setValue(verticalScrollbar->value() - m_reverseScroll*direction.y());
panOrigin = event->pos();
event->accept();
}
QGraphicsView::mouseMoveEvent(event);
}
void QGVPage::mouseReleaseEvent(QMouseEvent *event)
{
if(getDrawPage()->balloonPlacing) {
QApplication::restoreOverrideCursor();
balloonCursor->hide();
std::string FeatName = getDrawPage()->getDocument()->getUniqueObjectName("Balloon");
std::string PageName = getDrawPage()->getNameInDocument();
Gui::Command::openCommand("Create Balloon");
TechDraw::DrawViewBalloon *balloon = 0;
Gui::Command::openCommand("Create Balloon");
Command::doCommand(Command::Doc,"App.activeDocument().addObject('TechDraw::DrawViewBalloon','%s')",FeatName.c_str());
Command::doCommand(Command::Doc,"App.activeDocument().%s.addView(App.activeDocument().%s)",PageName.c_str(),FeatName.c_str());
balloon = dynamic_cast<TechDraw::DrawViewBalloon *>(getDrawPage()->getDocument()->getObject(FeatName.c_str()));
if (!balloon) {
throw Base::TypeError("CmdTechDrawNewBalloon - balloon not found\n");
}
balloon->sourceView.setValue(getDrawPage()->balloonParent);
balloon->origin = mapToScene(event->pos());
Gui::Command::commitCommand();
balloon->recomputeFeature();
//Horrible hack to force Tree update
double x = getDrawPage()->balloonParent->X.getValue();
getDrawPage()->balloonParent->X.setValue(x);
}
if (event->button()&Qt::MiddleButton) {
QApplication::restoreOverrideCursor();
panningActive = false;
}
QGraphicsView::mouseReleaseEvent(event);
viewport()->setCursor(Qt::ArrowCursor);
}
TechDraw::DrawPage* QGVPage::getDrawPage()
{
return m_vpPage->getDrawPage();
}
QColor QGVPage::getBackgroundColor()
{
Base::Reference<ParameterGrp> hGrp = App::GetApplication().GetUserParameter()
.GetGroup("BaseApp")->GetGroup("Preferences")->GetGroup("Mod/TechDraw/Colors");
App::Color fcColor;
fcColor.setPackedValue(hGrp->GetUnsigned("Background", 0x70707000));
return fcColor.asValue<QColor>();
}
#include <Mod/TechDraw/Gui/moc_QGVPage.cpp>
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