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/***************************************************************************
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* Copyright (c) 2007 J�rgen Riegel <juergen.riegel@web.de> *
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* This file is Drawing of the FreeCAD CAx development system. *
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* This library is free software; you can redistribute it and/or *
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* modify it under the terms of the GNU Library General Public *
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* License as published by the Free Software Foundation; either *
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* version 2 of the License, or (at your option) any later version. *
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* This library is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A DrawingICULAR PURPOSE. See the *
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* GNU Library General Public License for more details. *
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* You should have received a copy of the GNU Library General Public *
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* License along with this library; see the file COPYING.LIB. If not, *
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* write to the Free Software Foundation, Inc., 59 Temple Place, *
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* Suite 330, Boston, MA 02111-1307, USA *
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***************************************************************************/
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#include "PreCompiled.h"
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#include "DrawingView.h"
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#include <Gui/FileDialog.h>
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#include <Base/gzstream.h>
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using namespace DrawingGui;
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class DrawingScrollArea : public QScrollArea
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DrawingScrollArea(QWidget* parent)
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void wheelEvent(QWheelEvent* e)
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#if QT_VERSION >= 0x040200
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/* TRANSLATOR DrawingGui::DrawingView */
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DrawingView::DrawingView(QWidget* parent)
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// enable mouse tracking when moving even if no buttons are pressed
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setMouseTracking(true);
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// enable the mouse events
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_mouseEventsEnabled = true;
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// Create the default status bar for displaying messages
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//EnableStatusBar(true);
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// Create an OpenGL widget for displaying Drawings
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//_pGLDrawingBox = new GLDrawingBox(this);
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_scroll = new DrawingScrollArea(this);
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_drawingView = new QSvgWidget(_scroll);
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_drawingView->setBackgroundRole(QPalette::Base);
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//this->_drawingView->setFocus();
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//scroll->setFocusProxy(_drawingView);
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// _drawingView->setFocusProxy(scroll);
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_scroll->setWidget(_drawingView);
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//_drawingView->resize(20, 20);
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setCentralWidget(_scroll);
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//setCentralWidget(_pGLDrawingBox);
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// Create the actions, menus and toolbars
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// connect other slots
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//connect(_pGLDrawingBox, SIGNAL(drawGraphics()), this, SLOT(drawGraphics()));
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DrawingView::~DrawingView()
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// No need to delete _pGLDrawingBox or other widgets as this gets done automatically by QT
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bool DrawingView::onMsg(const char* pMsg, const char** ppReturn)
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if(strcmp("ViewFit",pMsg) == 0 ){
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// comment out on older Inventor
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} /*else if(strcmp("Example1",pMsg) == 0 ){
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SoSeparator * root = new SoSeparator;
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_viewer->setSceneGraph(root);
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}else if(strcmp("Example2",pMsg) == 0 ){
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SoSeparator * root = new SoSeparator;
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_viewer->setSceneGraph(root);
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}else if(strcmp("Example3",pMsg) == 0 ){
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SoSeparator * root = new SoSeparator;
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AnimationTexture(root);
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_viewer->setSceneGraph(root);
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}else if(strcmp("GetCamera",pMsg) == 0 ){
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SoCamera * Cam = _viewer->getCamera();
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*ppReturn = writeNodesToString(Cam).c_str();
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}else if(strncmp("SetCamera",pMsg,9) == 0 ){
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return setCamera(pMsg+10);
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}else if(strncmp("Dump",pMsg,4) == 0 ){
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}else if(strcmp("ViewBottom",pMsg) == 0 ){
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SoCamera* cam = _viewer->getCamera();
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cam->orientation.setValue(-1, 0, 0, 0);
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}else if(strcmp("ViewFront",pMsg) == 0 ){
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float root = (float)(sqrt(2.0)/2.0);
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SoCamera* cam = _viewer->getCamera();
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cam->orientation.setValue(-root, 0, 0, -root);
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}else if(strcmp("ViewLeft",pMsg) == 0 ){
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SoCamera* cam = _viewer->getCamera();
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cam->orientation.setValue(0.5, 0.5, 0.5, 0.5);
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}else if(strcmp("ViewRear",pMsg) == 0 ){
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float root = (float)(sqrt(2.0)/2.0);
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SoCamera* cam = _viewer->getCamera();
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cam->orientation.setValue(0, root, root, 0);
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}else if(strcmp("ViewRight",pMsg) == 0 ){
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SoCamera* cam = _viewer->getCamera();
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cam->orientation.setValue(-0.5, 0.5, 0.5, -0.5);
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}else if(strcmp("ViewTop",pMsg) == 0 ){
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SoCamera* cam = _viewer->getCamera();
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cam->orientation.setValue(0, 0, 0, 1);
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}else if(strcmp("ViewAxo",pMsg) == 0 ){
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float root = (float)(sqrt(3.0)/4.0);
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SoCamera* cam = _viewer->getCamera();
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cam->orientation.setValue(-0.333333f, -0.166666f, -0.333333f, -root);
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}else if(strcmp("OrthographicCamera",pMsg) == 0 ){
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_viewer->setCameraType(SoOrthographicCamera::getClassTypeId());
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}else if(strcmp("PerspectiveCamera",pMsg) == 0 ){
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_viewer->setCameraType(SoPerspectiveCamera::getClassTypeId());
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}else if(strcmp("Undo",pMsg) == 0 ){
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getGuiDocument()->undo(1);
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}else if(strcmp("Redo",pMsg) == 0 ){
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getGuiDocument()->redo(1);
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bool DrawingView::onHasMsg(const char* pMsg) const
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if(strcmp("ViewFit",pMsg) == 0 ){
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}/*else if(strcmp("Redo",pMsg) == 0 ){
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return getAppDocument()->getAvailableRedos() > 0;
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}else if(strcmp("SetStereoRedGreen",pMsg) == 0 ){
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}else if(strcmp("SetStereoQuadBuff",pMsg) == 0 ){
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}else if(strcmp("SetStereoInterleavedRows",pMsg) == 0 ){
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}else if(strcmp("SetStereoInterleavedColumns",pMsg) == 0 ){
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}else if(strcmp("SetStereoOff",pMsg) == 0 ){
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}else if(strcmp("Example1",pMsg) == 0 ){
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}else if(strcmp("Example2",pMsg) == 0 ){
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}else if(strcmp("Example3",pMsg) == 0 ){
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}else if(strcmp("Undo",pMsg) == 0 ){
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return getAppDocument()->getAvailableUndos() > 0;
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}else if(strcmp("ViewBottom",pMsg) == 0 ){
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}else if(strcmp("ViewFront",pMsg) == 0 ){
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}else if(strcmp("ViewLeft",pMsg) == 0 ){
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}else if(strcmp("ViewRear",pMsg) == 0 ){
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}else if(strcmp("ViewRight",pMsg) == 0 ){
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}else if(strcmp("ViewTop",pMsg) == 0 ){
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}else if(strcmp("ViewAxo",pMsg) == 0 ){
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}else if(strcmp("GetCamera",pMsg) == 0 ){
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}else if(strncmp("SetCamera",pMsg,9) == 0 ){
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}else if(strncmp("Dump",pMsg,4) == 0 ){
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void DrawingView::viewAll()
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void DrawingView::load (const QString & file)
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QString suffix = fi.suffix().toLower();
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if (suffix == QLatin1String("svg")) {
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this->_drawingView->load(file);
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} else if (suffix == QLatin1String("svgz")) {
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Gui::ByteArrayStream buf(contents);
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Base::igzstream gzip(file.toUtf8());
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this->_drawingView->load(contents);
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QSize size = this->_drawingView->renderer()->defaultSize();
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this->aspectRatio = (float)size.width() / (float)size.height();
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this->_drawingView->resize(size);
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// Create the action groups, actions, menus and toolbars
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void DrawingView::createActions()
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// Slot function to fit (stretch/shrink) the Drawing to the view size
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void DrawingView::fitDrawing()
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QSize DrawSize = this->_drawingView->size();
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QSize ScrollSize = this->_scroll->size();
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float ratio = DrawSize.width()/float(DrawSize.height());
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if(ratio < ScrollSize.width()/float(ScrollSize.height()))
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float height = ScrollSize.height() - 2.0;
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float width = ratio * height;
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DrawSize.setWidth ((int)width);
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DrawSize.setHeight((int)height);
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float width = ScrollSize.width()- 2.0;
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float height = width / ratio;
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DrawSize.setWidth ((int)width);
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DrawSize.setHeight((int)height);
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//float height = std::max<float>(factor * (float)size.height(),10.0f);
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//float width = this->aspectRatio * height;
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//size.setWidth ((int)width);
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//size.setHeight((int)height);
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this->_drawingView->resize(DrawSize);
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// Slot function to display the Drawing at a 1:1 scale"
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void DrawingView::oneToOneDrawing()
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// Slot function to handle the color actions
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void DrawingView::handleColorAct( QAction* act)
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if (act == _pShowOrigAct)
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_pSliderBrightAdj->setEnabled(false);
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showOriginalColors();
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else if (act == _pShowBrightAct)
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_pSliderBrightAdj->setEnabled(true);
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// Show the original colors (no enhancement)
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// but Drawing will be scaled for the number of significant bits
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// (i.e if 12 significant bits (in 16-bit Drawing) a value of 4095 will be shown as white)
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void DrawingView::showOriginalColors()
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// Show the Drawing with a brightness adjustment
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void DrawingView::showBrightened()
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// Slot function to adjust the brightness slider's value
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void DrawingView::sliderValueAdjusted(int NewValue)
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_sliderBrightAdjVal = NewValue;
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if (_pShowBrightAct->isChecked() == true)
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void DrawingView::mousePressEvent(QMouseEvent* cEvent)
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if (_mouseEventsEnabled == true)
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// Mouse event coordinates are relative to top-left of Drawing view (including toolbar!)
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// Get current cursor position relative to top-left of Drawing box
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QPoint offset;// = _pGLDrawingBox->pos();
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int box_x = cEvent->x() - offset.x();
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int box_y = cEvent->y() - offset.y();
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switch(cEvent->buttons())
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//case Qt::LeftButton | Qt::MidButton:
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// _currMode = zooming;
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if (cEvent->modifiers() & Qt::ShiftModifier)
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_currMode = addselection;
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_currMode = selection;
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case Qt::RightButton:
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// _pContextMenu->exec(cEvent->globalPos());
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void DrawingView::mouseDoubleClickEvent(QMouseEvent* cEvent)
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if (_mouseEventsEnabled == true)
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// Mouse event coordinates are relative to top-left of Drawing view (including toolbar!)
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// Get current cursor position relative to top-left of Drawing box
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QPoint offset;// = _pGLDrawingBox->pos();
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int box_x = cEvent->x() - offset.x();
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int box_y = cEvent->y() - offset.y();
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if(cEvent->button() == Qt::MidButton)
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// double icX = _pGLDrawingBox->WCToIC_X(_currX);
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// double icY = _pGLDrawingBox->WCToIC_Y(_currY);
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//int pixX = (int)floor(icX + 0.5);
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//int pixY = (int)floor(icY + 0.5);
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// _pGLDrawingBox->setZoomFactor(_pGLDrawingBox->getZoomFactor(), true, (int)floor(icX + 0.5), (int)floor(icY + 0.5));
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// _pGLDrawingBox->redraw();
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void DrawingView::mouseMoveEvent(QMouseEvent* cEvent)
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QApplication::flush();
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// Mouse event coordinates are relative to top-left of Drawing view (including toolbar!)
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// Get current cursor position relative to top-left of Drawing box
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QPoint offset ;//= _pGLDrawingBox->pos();
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int box_x = cEvent->x() - offset.x();
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int box_y = cEvent->y() - offset.y();
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if (_mouseEventsEnabled == true)
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//_pGLDrawingBox->relMoveWC(box_x - dragStartWCx, box_y - dragStartWCy);
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zoom(_currX, _currY, box_x, box_y);
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// Update the status bar
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// Mouse release event
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void DrawingView::mouseReleaseEvent(QMouseEvent* cEvent)
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if (_mouseEventsEnabled == true)
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// Mouse event coordinates are relative to top-left of Drawing view (including toolbar!)
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// Get current cursor position relative to top-left of Drawing box
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QPoint offset;// = _pGLDrawingBox->pos();
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int box_x = cEvent->x() - offset.x();
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int box_y = cEvent->y() - offset.y();
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select(box_x, box_y);
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addSelect(box_x, box_y);
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void DrawingView::wheelEvent(QWheelEvent * cEvent)
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if (_mouseEventsEnabled == true)
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// Mouse event coordinates are relative to top-left of Drawing view (including toolbar!)
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// Get current cursor position relative to top-left of Drawing box
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QPoint offset;// = _pGLDrawingBox->pos();
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int box_x = cEvent->x() - offset.x();
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int box_y = cEvent->y() - offset.y();
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// Zoom around centrally displayed Drawing point
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float numTicks = (float)(-cEvent->delta())/240.0;
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float factor = pow(2.0f, numTicks);
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QSize size = this->_drawingView->size();
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float height = std::max<float>(factor * (float)size.height(),10.0f);
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float width = this->aspectRatio * height;
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size.setWidth ((int)width);
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size.setHeight((int)height);
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this->_drawingView->resize(size);
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//_pGLDrawingBox->getCentrePoint(ICx, ICy);
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//_pGLDrawingBox->setZoomFactor(_pGLDrawingBox->getZoomFactor() / pow(2.0, (double)numTicks), true, ICx, ICy);
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//_pGLDrawingBox->redraw();
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// Update the status bar
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// Update the status bar with the Drawing parameters for the current mouse position
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void DrawingView::updateStatusBar()
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if (_statusBarEnabled == true)
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// Create the text string to display in the status bar
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QString txt = createStatusBarText();
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// Update status bar with new text
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statusBar()->showMessage(txt);
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// Create the text to display in the status bar.
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// Gets called by updateStatusBar()
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// Override this function in a derived class to add your own text
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QString DrawingView::createStatusBarText()
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/* // Get some Drawing parameters
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//unsigned short numDrawingSamples = _pGLDrawingBox->getDrawingNumSamplesPerPix();
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double zoomFactor = _pGLDrawingBox->getZoomFactor();
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double icX = _pGLDrawingBox->WCToIC_X(_currX);
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double icY = _pGLDrawingBox->WCToIC_Y(_currY);
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int pixX = (int)floor(icX + 0.5);
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int pixY = (int)floor(icY + 0.5);
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int colorFormat = _pGLDrawingBox->getDrawingFormat();
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// Create text for status bar
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if ((colorFormat == IB_CF_GREY8) ||
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(colorFormat == IB_CF_GREY16) ||
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(colorFormat == IB_CF_GREY32))
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if (_pGLDrawingBox->getDrawingSample(pixX, pixY, 0, grey_value) == 0)
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txt.sprintf("x,y = %0.2lf,%0.2lf | %s = %d | %s = %0.1lf",
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icX, icY, (const char*)tr("grey").toAscii(), (int)grey_value, (const char*)tr("zoom").toAscii(), zoomFactor);
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txt.sprintf("x,y = %s | %s = %0.1lf", (const char*)tr("outside Drawing").toAscii(), (const char*)tr("zoom").toAscii(), zoomFactor);
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else if ((colorFormat == IB_CF_RGB24) ||
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(colorFormat == IB_CF_RGB48))
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double red, green, blue;
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if ((_pGLDrawingBox->getDrawingSample(pixX, pixY, 0, red) != 0) ||
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(_pGLDrawingBox->getDrawingSample(pixX, pixY, 1, green) != 0) ||
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(_pGLDrawingBox->getDrawingSample(pixX, pixY, 2, blue) != 0))
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txt.sprintf("x,y = %s | %s = %0.1lf", (const char*)tr("outside Drawing").toAscii(), (const char*)tr("zoom").toAscii(), zoomFactor);
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txt.sprintf("x,y = %0.2lf,%0.2lf | rgb = %d,%d,%d | %s = %0.1lf",
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icX, icY, (int)red, (int)green, (int)blue, (const char*)tr("zoom").toAscii(), zoomFactor);
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else if ((colorFormat == IB_CF_BGR24) ||
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(colorFormat == IB_CF_BGR48))
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double red, green, blue;
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if ((_pGLDrawingBox->getDrawingSample(pixX, pixY, 0, blue) != 0) ||
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(_pGLDrawingBox->getDrawingSample(pixX, pixY, 1, green) != 0) ||
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(_pGLDrawingBox->getDrawingSample(pixX, pixY, 2, red) != 0))
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txt.sprintf("x,y = %s | %s = %0.1lf", (const char*)tr("outside Drawing").toAscii(), (const char*)tr("zoom").toAscii(), zoomFactor);
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txt.sprintf("x,y = %0.2lf,%0.2lf | rgb = %d,%d,%d | %s = %0.1lf",
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icX, icY, (int)red, (int)green, (int)blue, (const char*)tr("zoom").toAscii(), zoomFactor);
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else if ((colorFormat == IB_CF_RGBA32) ||
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(colorFormat == IB_CF_RGBA64))
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double red, green, blue, alpha;
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if ((_pGLDrawingBox->getDrawingSample(pixX, pixY, 0, red) != 0) ||
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(_pGLDrawingBox->getDrawingSample(pixX, pixY, 1, green) != 0) ||
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(_pGLDrawingBox->getDrawingSample(pixX, pixY, 2, blue) != 0) ||
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(_pGLDrawingBox->getDrawingSample(pixX, pixY, 3, alpha) != 0))
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txt.sprintf("x,y = %s | %s = %0.1lf", (const char*)tr("outside Drawing").toAscii(), (const char*)tr("zoom").toAscii(), zoomFactor);
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txt.sprintf("x,y = %0.2lf,%0.2lf | rgba = %d,%d,%d,%d | %s = %0.1lf",
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icX, icY, (int)red, (int)green, (int)blue, (int)alpha, (const char*)tr("zoom").toAscii(), zoomFactor);
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else if ((colorFormat == IB_CF_BGRA32) ||
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(colorFormat == IB_CF_BGRA64))
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double red, green, blue, alpha;
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if ((_pGLDrawingBox->getDrawingSample(pixX, pixY, 0, blue) != 0) ||
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(_pGLDrawingBox->getDrawingSample(pixX, pixY, 1, green) != 0) ||
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(_pGLDrawingBox->getDrawingSample(pixX, pixY, 2, red) != 0) ||
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(_pGLDrawingBox->getDrawingSample(pixX, pixY, 3, alpha) != 0))
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txt.sprintf("x,y = %s | %s = %0.1lf", (const char*)tr("outside Drawing").toAscii(), (const char*)tr("zoom").toAscii(), zoomFactor);
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txt.sprintf("x,y = %0.2lf,%0.2lf | rgba = %d,%d,%d,%d | %s = %0.1lf",
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icX, icY, (int)red, (int)green, (int)blue, (int)alpha, (const char*)tr("zoom").toAscii(), zoomFactor);
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// Starts a mouse drag in the Drawing - stores some initial positions
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void DrawingView::startDrag()
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//_pGLDrawingBox->fixBasePosCurr(); // fixes current Drawing position as base position
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dragStartWCx = _currX;
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dragStartWCy = _currY;
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// Zoom the Drawing using vertical mouse movement to define a zoom factor
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void DrawingView::zoom(int prevX, int prevY, int currX, int currY)
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// Check we have more of a vertical shift than a hz one
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int dx = currX - prevX;
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int dy = currY - prevY;
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if (abs(dy) > abs(dx))
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// Get centrally displayed Drawing point
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//_pGLDrawingBox->getCentrePoint(ICx, ICy);
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// Compute zoom factor multiplier
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double zoomFactorMultiplier = 1.05;
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zoomFactorMultiplier = 0.95;
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// Zoom around centrally displayed Drawing point
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//_pGLDrawingBox->setZoomFactor(_pGLDrawingBox->getZoomFactor() * zoomFactorMultiplier, true, ICx, ICy);
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//_pGLDrawingBox->redraw();
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// Select at the given position
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void DrawingView::select(int currX, int currY)
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// base class implementation does nothing
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// override this method and implement selection capability if required
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// Add selection at the given position
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void DrawingView::addSelect(int currX, int currY)
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// base class implementation does nothing
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// override this method and implement selection capability if required
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// Draw any 2D graphics necessary
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// Use GLDrawingBox::ICToWC_X and ICToWC_Y methods to transform Drawing coordinates into widget coordinates (which
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// must be used by the OpenGL vertex commands).
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void DrawingView::drawGraphics()
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// base class implementation does nothing
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// override this method and implement OpenGL drawing commands to draw any needed graphics on top of the Drawing
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/* Example: draw a red line from Drawing coordinates (100,100) to (120,120)
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glColor3ub((GLubyte)255, (GLubyte)0, (GLubyte)0);
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glVertex2d(_pGLDrawingBox->ICToWC_X(100.0), _pGLDrawingBox->ICToWC_Y(100.0));
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glVertex2d(_pGLDrawingBox->ICToWC_X(120.0), _pGLDrawingBox->ICToWC_Y(120.0));
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#include "moc_DrawingView.cpp"
added
removed
src/Mod/Drawing/Gui/DrawingView.cpp
