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fca8034b1800c2da572b91d61cf4c1eebd4bea90
create/src/Mod/TechDraw/Gui/QGVPage.cpp
wandererfan fca8034b18 Fix delayed painting 
- Annotation and Image were not being painted
  immediately, but had to wait for a page
  refresh.
2018-05-16 18:58:10 -04:00

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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 <QWheelEvent>
# include <cmath>
#endif
#include <App/Application.h>
#include <App/Document.h>
#include <App/Material.h>
#include <Base/Console.h>
#include <Base/Stream.h>
#include <Gui/FileDialog.h>
#include <Gui/Selection.h>
#include <Gui/WaitCursor.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/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 "Rez.h"
#include "QGIDrawingTemplate.h"
#include "QGITemplate.h"
#include "QGISVGTemplate.h"
#include "TemplateTextField.h"
#include "QGIViewCollection.h"
#include "QGIViewDimension.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 "ZVALUE.h"
#include "ViewProviderPage.h"
#include "QGVPage.h"
using namespace TechDrawGui;
QGVPage::QGVPage(ViewProviderPage *vp, QGraphicsScene* s, QWidget *parent)
: QGraphicsView(parent)
, pageTemplate(0)
, m_renderer(Native)
, drawBkg(true)
, m_vpPage(0)
{
assert(vp);
m_vpPage = vp;
const char* name = vp->getDrawPage()->getNameInDocument();
setObjectName(QString::fromLocal8Bit(name));
setScene(s);
setViewportUpdateMode(QGraphicsView::SmartViewportUpdate);
setCacheMode(QGraphicsView::CacheBackground);
//setTransformationAnchor(AnchorUnderMouse);
//setTransformationAnchor(NoAnchor);
setTransformationAnchor(AnchorViewCenter);
setResizeAnchor(AnchorViewCenter);
setAlignment(Qt::AlignCenter);
setDragMode(ScrollHandDrag);
setCursor(QCursor(Qt::ArrowCursor));
setRenderHints(QPainter::Antialiasing | QPainter::SmoothPixmapTransform);
bkgBrush = new QBrush(getBackgroundColor());
resetCachedContent();
}
QGVPage::~QGVPage()
{
delete bkgBrush;
}
void QGVPage::drawBackground(QPainter *p, const QRectF &)
{
//Note: Background is not part of scene()
if(!drawBkg)
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
if(!m_vpPage) {
return;
}
// 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)
{
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) {
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)
{
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::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);
}
//! 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 *myView = view->getViewObject();
//If type is dimension we check references first
TechDraw::DrawViewDimension *dim = 0;
dim = dynamic_cast<TechDraw::DrawViewDimension *>(myView);
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;
}
}
}
}
// 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(myView->getNameInDocument(), (*it)->getNameInDocument()) == 0)
return grp;
}
}
}
}
// Not found a parent
return 0;
}
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::toggleMarkers(bool enable)
{
QList<QGraphicsItem*> list = scene()->items();
for (QList<QGraphicsItem*>::iterator it = list.begin(); it != list.end(); ++it) {
QGIView *itemView = dynamic_cast<QGIView *>(*it);
if(itemView) {
itemView->setSelected(false);
itemView->toggleBorder(enable);
QGIViewPart *viewPart = dynamic_cast<QGIViewPart *>(*it);
if(viewPart) {
viewPart->toggleVertices(enable);
}
}
QGISVGTemplate* itemTemplate = dynamic_cast<QGISVGTemplate*> (*it);
if (itemTemplate) {
std::vector<TemplateTextField *> textFields = itemTemplate->getTextFields();
for (auto& t:textFields) {
if (enable) {
t->show();
} else {
t->hide();
}
}
}
}
}
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: ") +
pageName +
tr(" exported from FreeCAD document: ") +
docName;
QSvgGenerator svgGen;
svgGen.setFileName(filename);
svgGen.setSize(QSize((int) Rez::guiX(page->getPageWidth()), (int) Rez::guiX(page->getPageHeight()))); //expects pixels, gets mm
//"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, Rez::guiX(page->getPageWidth()), Rez::guiX(page->getPageHeight())));
svgGen.setResolution(Rez::guiX(25.4)); // docs say this is DPI. 1dot/mm so 25.4dpi
svgGen.setTitle(QObject::tr("FreeCAD SVG Export"));
svgGen.setDescription(svgDescription);
Gui::Selection().clearSelection();
toggleMarkers(false); //fiddle cache, vertices, frames, etc
toggleHatch(false);
scene()->update();
viewport()->repaint();
double width = Rez::guiX(page->getPageWidth());
double height = Rez::guiX(page->getPageHeight());
QRectF sourceRect(0.0,-height,width,height);
QRectF targetRect;
Gui::Selection().clearSelection();
QPainter p;
p.begin(&svgGen);
scene()->render(&p, targetRect,sourceRect);
p.end();
toggleMarkers(true);
toggleHatch(true);
scene()->update();
viewport()->repaint();
}
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;
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::enterEvent(QEvent *event)
{
QGraphicsView::enterEvent(event);
viewport()->setCursor(Qt::ArrowCursor);
}
void QGVPage::mousePressEvent(QMouseEvent *event)
{
QGraphicsView::mousePressEvent(event);
viewport()->setCursor(Qt::ClosedHandCursor);
}
void QGVPage::mouseReleaseEvent(QMouseEvent *event)
{
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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