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[modules/shaper.git] / src / XGUI / XGUI_ViewWindow.cpp
index 2ca380116ead4431370528f15a57adc0bd7175ad..69e4f2a4acc81cfd5682dff791fcdc6acf12c5db 100644 (file)
@@ -1,5 +1,8 @@
 #include "XGUI_ViewWindow.h"
-
+#include "XGUI_ViewPort.h"
+#include "XGUI_Viewer.h"
+#include "XGUI_Tools.h"
+#include "XGUI_RubberBand.h"
 
 #include <QLayout>
 #include <QLabel>
 #include <QAction>
 #include <QResizeEvent>
 #include <QApplication>
+#include <QMdiArea>
+#include <QMdiSubWindow>
+#include <QPainter>
+#include <QTimer>
+#include <QFileDialog>
+#include <QStyleOptionToolBar>
+
+#include <TopoDS_Shape.hxx>
+#include <BRep_Tool.hxx>
+#include <TopoDS.hxx>
+#include <Visual3d_View.hxx>
 
 #define BORDER_SIZE 2
 
-XGUI_ViewWindow::XGUI_ViewWindow()
-{
-    setMouseTracking(true);
-    QVBoxLayout* aLay = new QVBoxLayout(this);
-    aLay->setContentsMargins(BORDER_SIZE,BORDER_SIZE,BORDER_SIZE,BORDER_SIZE);
-    myViewPort = new QLabel(this);
-    aLay->addWidget(myViewPort);
-    myViewPort->setFrameStyle(QFrame::Raised);
-    myViewPort->setCursor(Qt::ArrowCursor);
-    myViewPort->setFrameShape(QFrame::Panel);
-    myViewPort->setPixmap(QPixmap(":pictures/ViewPort.png"));
-    myViewPort->setScaledContents(true);
-
-    myPicture = new QLabel(this);
-    aLay->addWidget(myPicture);
-    myPicture->hide();
-
-    QStringList aPictures;
-    aPictures<<":pictures/occ_view_camera_dump.png"<<":pictures/occ_view_style_switch.png";
-    aPictures<<":pictures/occ_view_triedre.png"<<":pictures/occ_view_fitall.png";
-    aPictures<<":pictures/occ_view_fitarea.png"<<":pictures/occ_view_zoom.png";
-    aPictures<<":pictures/occ_view_pan.png"<<":pictures/occ_view_glpan.png";
-    aPictures<<":pictures/occ_view_rotate.png"<<":pictures/occ_view_front.png";
-    aPictures<<":pictures/occ_view_back.png"<<":pictures/occ_view_left.png";
-    aPictures<<":pictures/occ_view_right.png"<<":pictures/occ_view_top.png";
-    aPictures<<":pictures/occ_view_bottom.png"<<":pictures/occ_view_clone.png";
-
-    QStringList aTitles;
-    aTitles << "Dump view" << "Mouse style switch" << "Show trihedron" << "Fit all";
-    aTitles << "Fit area" << "Zoom" << "Panning" << "Global panning" << "Rotate";
-    aTitles << "Front" << "Back" << "Left" << "Right" << "Top" << "Bottom" << "Clone view";
-
-    aViewBar = new QToolBar(this);
-    //aViewBar->move(BORDER_SIZE, BORDER_SIZE);
-
-    QAction* aBtn;
-    for (int i = 0; i < aTitles.length(); i++) {
-        aBtn = new QAction(QIcon(aPictures.at(i)), aTitles.at(i), aViewBar);
-        aViewBar->addAction(aBtn);
-    }
-    
-    aWindowBar = new QToolBar(this);
-    //aWindowBar->move(615,0);
+const char* imageZoomCursor[] = { "32 32 3 1", ". c None", "a c #000000", "# c #ffffff",
+    "................................", "................................",
+    ".#######........................", "..aaaaaaa.......................",
+    "................................", ".............#####..............",
+    "...........##.aaaa##............", "..........#.aa.....a#...........",
+    ".........#.a.........#..........", ".........#a..........#a.........",
+    "........#.a...........#.........", "........#a............#a........",
+    "........#a............#a........", "........#a............#a........",
+    "........#a............#a........", ".........#...........#.a........",
+    ".........#a..........#a.........", ".........##.........#.a.........",
+    "........#####.....##.a..........", ".......###aaa#####.aa...........",
+    "......###aa...aaaaa.......#.....", ".....###aa................#a....",
+    "....###aa.................#a....", "...###aa...............#######..",
+    "....#aa.................aa#aaaa.", ".....a....................#a....",
+    "..........................#a....", "...........................a....",
+    "................................", "................................",
+    "................................", "................................" };
 
-    aBtn = new QAction(aWindowBar);
-    aBtn->setIcon(QIcon(":pictures/wnd_minimize.png"));
-    aWindowBar->addAction(aBtn);
-    connect(aBtn, SIGNAL(triggered()), SLOT(onMinimize()));
-    connect(aBtn, SIGNAL(triggered()), SLOT(showMinimized()));
+const char* imageRotateCursor[] = { "32 32 3 1", ". c None", "a c #000000", "# c #ffffff",
+    "................................", "................................",
+    "................................", "................................",
+    "........#.......................", ".......#.a......................",
+    "......#######...................", ".......#aaaaa#####..............",
+    "........#..##.a#aa##........##..", ".........a#.aa..#..a#.....##.aa.",
+    ".........#.a.....#...#..##.aa...", ".........#a.......#..###.aa.....",
+    "........#.a.......#a..#aa.......", "........#a.........#..#a........",
+    "........#a.........#a.#a........", "........#a.........#a.#a........",
+    "........#a.........#a.#a........", ".........#.........#a#.a........",
+    "........##a........#a#a.........", "......##.a#.......#.#.a.........",
+    "....##.aa..##.....##.a..........", "..##.aa.....a#####.aa...........",
+    "...aa.........aaa#a.............", "................#.a.............",
+    "...............#.a..............", "..............#.a...............",
+    "...............a................", "................................",
+    "................................", "................................",
+    "................................", "................................" };
 
-    aBtn = new QAction(aWindowBar);
-    aBtn->setIcon(QIcon(":pictures/wnd_maximize.png"));
-    aWindowBar->addAction(aBtn);
-    connect(aBtn, SIGNAL(triggered()), SLOT(showMaximized()));
+const char* imageCrossCursor[] = { "32 32 3 1", ". c None", "a c #000000", "# c #ffffff",
+    "................................", "................................",
+    "................................", "................................",
+    "................................", "................................",
+    "................................", "...............#................",
+    "...............#a...............", "...............#a...............",
+    "...............#a...............", "...............#a...............",
+    "...............#a...............", "...............#a...............",
+    "...............#a...............", ".......#################........",
+    "........aaaaaaa#aaaaaaaaa.......", "...............#a...............",
+    "...............#a...............", "...............#a...............",
+    "...............#a...............", "...............#a...............",
+    "...............#a...............", "...............#a...............",
+    "................a...............", "................................",
+    "................................", "................................",
+    "................................", "................................",
+    "................................", "................................" };
 
-    aBtn = new QAction(aWindowBar);
-    aBtn->setIcon(QIcon(":pictures/wnd_close.png"));
-    aWindowBar->addAction(aBtn);
-    connect(aBtn, SIGNAL(triggered()), SLOT(onClose()));
+ViewerToolbar::ViewerToolbar(QWidget* theParent, XGUI_ViewPort* thePort)
+    : QToolBar(theParent),
+      myVPort(thePort),
+      myResize(false)
+{
+  connect(myVPort, SIGNAL(resized()), this, SLOT(onViewPortResized()));
+}
+
+void ViewerToolbar::paintEvent(QPaintEvent* theEvent)
+{
+  //QToolBar::paintEvent(theEvent);
+  // Paint background
+  QPainter aPainter(this);
+  QRect aRect = rect();
+  QRect aVPRect = myVPort->rect();
+  QPoint aGlobPnt = mapToGlobal(aRect.topLeft());
+  QPoint aPnt = myVPort->mapFromGlobal(aGlobPnt);
 
-    aViewBar->hide();
-    aWindowBar->hide();
+  QRect aImgRect(
+      QRect(aPnt.x(), aPnt.y() + aVPRect.height() - aRect.height(), aRect.width(), aRect.height()));
+  QImage aImg = myVPort->dumpView(aImgRect, myResize);
+  if (!aImg.isNull())
+    aPainter.drawImage(aRect, aImg);
+  myResize = false;
+
+  // Paint foreground
+  QStyle *style = this->style();
+  QStyleOptionToolBar aOpt;
+  initStyleOption(&aOpt);
+
+  aOpt.rect = style->subElementRect(QStyle::SE_ToolBarHandle, &aOpt, this);
+  if (aOpt.rect.isValid())
+    style->drawPrimitive(QStyle::PE_IndicatorToolBarHandle, &aOpt, &aPainter, this);
+}
+
+//**************************************************************************
+ViewerLabel::ViewerLabel(QWidget* theParent, XGUI_ViewPort* thePort)
+    : QLabel(theParent),
+      myVPort(thePort),
+      myResize(false)
+{
+  connect(myVPort, SIGNAL(resized()), this, SLOT(onViewPortResized()));
 }
 
+void ViewerLabel::paintEvent(QPaintEvent* theEvent)
+{
+  QRect aRect = rect();
+  QRect aVPRect = myVPort->rect();
+  QPoint aGlobPnt = mapToGlobal(aRect.topLeft());
+  QPoint aPnt = myVPort->mapFromGlobal(aGlobPnt);
+
+  QRect aImgRect(
+      QRect(aPnt.x(), aPnt.y() + aVPRect.height() - aRect.height(), aRect.width(), aRect.height()));
+  QImage aImg = myVPort->dumpView(aImgRect, myResize);
+  if (!aImg.isNull())
+    QPainter(this).drawImage(aRect, aImg);
+  myResize = false;
+  QLabel::paintEvent(theEvent);
+}
+
+//**************************************************************************
+//**************************************************************************
+//**************************************************************************
+XGUI_ViewWindow::XGUI_ViewWindow(XGUI_Viewer* theViewer, V3d_TypeOfView theType)
+    : QFrame(),
+      myViewer(theViewer),
+      myMoving(false),
+      MinimizeIco(":pictures/wnd_minimize.png"),
+      MaximizeIco(":pictures/wnd_maximize.png"),
+      CloseIco(":pictures/wnd_close.png"),
+      RestoreIco(":pictures/wnd_restore.png"),
+      myInteractionStyle(XGUI::STANDARD),
+      myRectBand(0),
+      myIsKeyFree(false),
+      my2dMode(XGUI::No2dMode),
+      myCurrPointType(XGUI::GRAVITY),
+      myPrevPointType(XGUI::GRAVITY),
+      myRotationPointSelection(false),
+      myClosable(true),
+      myStartX(0),
+      myStartY(0),
+      myCurrX(0),
+      myCurrY(0),
+      myCurScale(0.0),
+      myCurSketch(0),
+      myDrawRect(false),
+      myEnableDrawMode(false),
+      myCursorIsHand(false),
+      myEventStarted(false),
+      myIsActive(false),
+      myLastState(WindowNormalState),
+      myOperation(NOTHING)
+{
+  mySelectedPoint = gp_Pnt(0., 0., 0.);
+  setFrameStyle(QFrame::Raised);
+  setFrameShape(QFrame::Panel);
+  setLineWidth(BORDER_SIZE);
+  setMouseTracking(true);
+
+  QVBoxLayout* aLay = new QVBoxLayout(this);
+  aLay->setContentsMargins(BORDER_SIZE, BORDER_SIZE, BORDER_SIZE, BORDER_SIZE);
+  myViewPort = new XGUI_ViewPort(this, myViewer->v3dViewer(), theType);
+  myViewPort->installEventFilter(this);
+  myViewPort->setCursor(Qt::ArrowCursor);
+  aLay->addWidget(myViewPort);
+
+  myPicture = new QLabel(this);
+  myPicture->setFrameStyle(QFrame::Sunken);
+  myPicture->setFrameShape(QFrame::Panel);
+  myPicture->setMouseTracking(true);
+  myPicture->installEventFilter(this);
+  aLay->addWidget(myPicture);
+  myPicture->hide();
+
+  QVBoxLayout* aVPLay = new QVBoxLayout(myViewPort);
+  aVPLay->setMargin(0);
+  aVPLay->setSpacing(0);
+  aVPLay->setContentsMargins(0, 0, 0, 0);
+
+  QHBoxLayout* aToolLay = new QHBoxLayout();
+  aToolLay->setMargin(0);
+  aToolLay->setSpacing(0);
+  aToolLay->setContentsMargins(0, 0, 0, 0);
+  aVPLay->addLayout(aToolLay);
+  aVPLay->addStretch();
+
+  myGripWgt = new ViewerLabel(this, myViewPort);
+  myGripWgt->setPixmap(QPixmap(":pictures/wnd_grip.png"));
+  myGripWgt->setMouseTracking(true);
+  myGripWgt->installEventFilter(this);
+  myGripWgt->setCursor(Qt::OpenHandCursor);
+  aToolLay->addWidget(myGripWgt);
+
+  // Create Viewer management buttons
+  myViewBar = new ViewerToolbar(this, myViewPort);
+  myViewBar->setCursor(Qt::PointingHandCursor);
+  aToolLay->addWidget(myViewBar);
+  aToolLay->addStretch();
+
+  QAction* aBtn;
+
+  // Dump view
+  aBtn = new QAction(QIcon(":pictures/occ_view_camera_dump.png"), tr("Dump view"), myViewBar);
+  connect(aBtn, SIGNAL(triggered()), SLOT(dumpView()));
+  myViewBar->addAction(aBtn);
+  // Fit all
+  aBtn = new QAction(QIcon(":pictures/occ_view_fitall.png"), tr("Fit all"), myViewBar);
+  connect(aBtn, SIGNAL(triggered()), SLOT(fitAll()));
+  myViewBar->addAction(aBtn);
+  // Fit area
+  aBtn = new QAction(QIcon(":pictures/occ_view_fitarea.png"), tr("Fit area"), myViewBar);
+  connect(aBtn, SIGNAL(triggered()), SLOT(activateWindowFit()));
+  myViewBar->addAction(aBtn);
+  // Zoom
+  aBtn = new QAction(QIcon(":pictures/occ_view_zoom.png"), tr("Zoom"), myViewBar);
+  connect(aBtn, SIGNAL(triggered()), SLOT(activateZoom()));
+  myViewBar->addAction(aBtn);
+  // Pan
+  aBtn = new QAction(QIcon(":pictures/occ_view_pan.png"), tr("Panning"), myViewBar);
+  connect(aBtn, SIGNAL(triggered()), SLOT(activatePanning()));
+  myViewBar->addAction(aBtn);
+  // Global Panning
+  aBtn = new QAction(QIcon(":pictures/occ_view_glpan.png"), tr("Global panning"), myViewBar);
+  connect(aBtn, SIGNAL(triggered()), SLOT(activateGlobalPanning()));
+  myViewBar->addAction(aBtn);
+  // Rotation
+  aBtn = new QAction(QIcon(":pictures/occ_view_rotate.png"), tr("Rotate"), myViewBar);
+  connect(aBtn, SIGNAL(triggered()), SLOT(activateRotation()));
+  myViewBar->addAction(aBtn);
+  // Reset
+  aBtn = new QAction(QIcon(":pictures/occ_view_reset.png"), tr("Reset"), myViewBar);
+  connect(aBtn, SIGNAL(triggered()), SLOT(reset()));
+  myViewBar->addAction(aBtn);
+  // Front view
+  aBtn = new QAction(QIcon(":pictures/occ_view_front.png"), tr("Front"), myViewBar);
+  connect(aBtn, SIGNAL(triggered()), SLOT(frontView()));
+  myViewBar->addAction(aBtn);
+  // Back view
+  aBtn = new QAction(QIcon(":pictures/occ_view_back.png"), tr("Back"), myViewBar);
+  connect(aBtn, SIGNAL(triggered()), SLOT(backView()));
+  myViewBar->addAction(aBtn);
+  // Top view
+  aBtn = new QAction(QIcon(":pictures/occ_view_top.png"), tr("Top"), myViewBar);
+  connect(aBtn, SIGNAL(triggered()), SLOT(topView()));
+  myViewBar->addAction(aBtn);
+  // Bottom view
+  aBtn = new QAction(QIcon(":pictures/occ_view_bottom.png"), tr("Bottom"), myViewBar);
+  connect(aBtn, SIGNAL(triggered()), SLOT(bottomView()));
+  myViewBar->addAction(aBtn);
+  // Left view
+  aBtn = new QAction(QIcon(":pictures/occ_view_left.png"), tr("Left"), myViewBar);
+  connect(aBtn, SIGNAL(triggered()), SLOT(leftView()));
+  myViewBar->addAction(aBtn);
+  // Right view
+  aBtn = new QAction(QIcon(":pictures/occ_view_right.png"), tr("Right"), myViewBar);
+  connect(aBtn, SIGNAL(triggered()), SLOT(rightView()));
+  myViewBar->addAction(aBtn);
+  // Clone view
+  aBtn = new QAction(QIcon(":pictures/occ_view_clone.png"), tr("Clone"), myViewBar);
+  connect(aBtn, SIGNAL(triggered()), SLOT(cloneView()));
+  myViewBar->addAction(aBtn);
 
+  // Create Window management buttons
+  myWindowBar = new ViewerToolbar(this, myViewPort);
+  myWindowBar->setCursor(Qt::PointingHandCursor);
+  aToolLay->addWidget(myWindowBar);
+
+  myMinimizeBtn = new QAction(myWindowBar);
+  myMinimizeBtn->setIcon(MinimizeIco);
+  myWindowBar->addAction(myMinimizeBtn);
+  connect(myMinimizeBtn, SIGNAL(triggered()), SLOT(onMinimize()));
+
+  myMaximizeBtn = new QAction(myWindowBar);
+  myMaximizeBtn->setIcon(MaximizeIco);
+  myWindowBar->addAction(myMaximizeBtn);
+  connect(myMaximizeBtn, SIGNAL(triggered()), SLOT(onMaximize()));
+
+  aBtn = new QAction(myWindowBar);
+  aBtn->setIcon(CloseIco);
+  myWindowBar->addAction(aBtn);
+  connect(aBtn, SIGNAL(triggered()), SLOT(onClose()));
+
+  //Support copy of background on updating of viewer
+  connect(myViewPort, SIGNAL(vpTransformed()), this, SLOT(updateToolBar()));
+  connect(myViewPort, SIGNAL(vpUpdated()), this, SLOT(updateToolBar()));
+  connect(this, SIGNAL(vpTransformationFinished(XGUI_ViewWindow::OperationType)), this,
+          SLOT(updateToolBar()));
+}
+
+//****************************************************************
 XGUI_ViewWindow::~XGUI_ViewWindow()
 {
 }
 
+//****************************************************************
+void XGUI_ViewWindow::showEvent(QShowEvent* theEvent)
+{
+  QFrame::showEvent(theEvent);
+  myWindowBar->setFixedSize(myWindowBar->sizeHint());
+}
 
-void XGUI_ViewWindow::resizeEvent(QResizeEvent* theEvent)
+//****************************************************************
+void XGUI_ViewWindow::changeEvent(QEvent* theEvent)
 {
-    QSize aSize = theEvent->size();
-    QSize aWndBarSize = aWindowBar->sizeHint();
-    QSize aViewBarSize = aViewBar->sizeHint();
 
-    aWindowBar->move(aSize.width() - aWndBarSize.width() - BORDER_SIZE, BORDER_SIZE);
-    aViewBar->setGeometry(BORDER_SIZE, BORDER_SIZE, aSize.width() - aWndBarSize.width(), aViewBarSize.height());
+  if (theEvent->type() == QEvent::WindowStateChange) {
+    if (isMinimized()) {
+      if (myPicture->isHidden()) {
+        myViewBar->hide();
+        myGripWgt->hide();
+        myWindowBar->hide();
+        myViewPort->hide();
+        myPicture->show();
+      }
+    } else {
+      if (myPicture->isVisible()) {
+        myPicture->hide();
+        myViewPort->show();
+      }
+      if (isMaximized()) {
+        myMinimizeBtn->setIcon(MinimizeIco);
+        myMaximizeBtn->setIcon(RestoreIco);
+      }
+      myViewBar->setVisible(myIsActive);
+      myWindowBar->setVisible(myIsActive);
+      myGripWgt->setVisible(myIsActive && (!isMaximized()));
+    }
+  } else
+    QWidget::changeEvent(theEvent);
 }
 
+//****************************************************************
+void XGUI_ViewWindow::windowActivated()
+{
+  if (!(isMinimized() || parentWidget()->isMinimized())) {
+    myIsActive = true;
+    if (isMaximized() || parentWidget()->isMaximized()) {
+      myMaximizeBtn->setIcon(RestoreIco);
+    } else {
+      myMaximizeBtn->setIcon(MaximizeIco);
+    }
+    myViewBar->show();
+    myWindowBar->show();
+    myGripWgt->setVisible(
+        !(isMaximized() || isMinimized() || parentWidget()->isMaximized()
+            || parentWidget()->isMinimized()));
+  } else
+    myIsActive = false;
+}
 
-void XGUI_ViewWindow::changeEvent(QEvent* theEvent)
+//****************************************************************
+void XGUI_ViewWindow::windowDeactivated()
+{
+  myIsActive = false;
+  if (!(isMinimized() || parentWidget()->isMinimized())) {
+    if (isMaximized() || parentWidget()->isMaximized()) {
+      myMaximizeBtn->setIcon(RestoreIco);
+    } else {
+      myMaximizeBtn->setIcon(MaximizeIco);
+    }
+    myViewBar->hide();
+    myWindowBar->hide();
+    myGripWgt->hide();
+  }
+}
+
+//****************************************************************
+void XGUI_ViewWindow::onClose()
 {
+  if (parentWidget()) {
+    emit tryClosing(this);
+    if (closable()) {
+      emit closed(static_cast<QMdiSubWindow*>(parentWidget()));
+      parentWidget()->close();
+    }
+  }
+}
+
+//****************************************************************
+void XGUI_ViewWindow::onMinimize()
+{
+  QPixmap aPMap = QPixmap::fromImage(myViewPort->dumpView());
+  int aW = width();
+  int aH = height();
+  double aR = aW / 100.;
+  int aNewH = int(aH / aR);
+  myPicture->setPixmap(aPMap.scaled(100, aNewH));
 
-    if (theEvent->type() == QEvent::WindowStateChange) {
-        if (isMinimized()) {
-            parentWidget()->setGeometry(0, 0, 110, 80);
-            myViewPort->hide();
-            aViewBar->hide();
-            aWindowBar->hide();
-            myPicture->show();
+  myLastState =
+      (isMaximized() || parentWidget()->isMaximized()) ? MaximizedState : WindowNormalState;
+  showMinimized();
+  parentWidget()->showMinimized();
+  parentWidget()->setGeometry(parentWidget()->x(), parentWidget()->y(), 100, aNewH);
+  parentWidget()->lower();
+  windowDeactivated();
+  myViewer->onWindowMinimized((QMdiSubWindow*) parentWidget());
+}
+
+//****************************************************************
+void XGUI_ViewWindow::onMaximize()
+{
+  if (isMaximized() || parentWidget()->isMaximized()) {
+    myMaximizeBtn->setIcon(MaximizeIco);
+    myGripWgt->show();
+    showNormal();
+    parentWidget()->showNormal();
+  } else {
+    myMaximizeBtn->setIcon(RestoreIco);
+    myGripWgt->hide();
+    showMaximized();
+    parentWidget()->showMaximized();
+  }
+  parentWidget()->activateWindow();
+  myMinimizeBtn->setIcon(MinimizeIco);
+
+  //  In order to avoid frosen background in toolbars when it shown as a second view
+  QTimer::singleShot(50, parentWidget(), SLOT(setFocus()));
+}
+
+//****************************************************************
+bool XGUI_ViewWindow::processWindowControls(QObject *theObj, QEvent *theEvent)
+{
+  switch (theEvent->type()) {
+    case QEvent::MouseButtonPress: {
+      QMouseEvent* aEvent = static_cast<QMouseEvent*>(theEvent);
+      if ((aEvent->button() == Qt::LeftButton) && (!myMoving)) {
+        myMoving = true;
+        myMousePnt = aEvent->globalPos();
+        return true;
+      }
+    }
+      break;
+    case QEvent::MouseButtonRelease: {
+      QMouseEvent* aEvent = static_cast<QMouseEvent*>(theEvent);
+      if ((aEvent->button() == Qt::LeftButton) && myMoving) {
+        myMoving = false;
+        return true;
+      }
+    }
+      break;
+    case QEvent::MouseMove: {
+      QMouseEvent* aEvent = static_cast<QMouseEvent*>(theEvent);
+      if (myMoving) {
+        QMdiSubWindow* aParent = static_cast<QMdiSubWindow*>(parentWidget());
+        QMdiArea* aMDIArea = aParent->mdiArea();
+
+        QPoint aPnt = aEvent->globalPos();
+        QPoint aMDIPnt = aMDIArea->mapFromGlobal(aPnt);
+        if (aMDIArea->rect().contains(aMDIPnt)) {
+          int aX = aParent->x() + (aPnt.x() - myMousePnt.x());
+          int aY = aParent->y() + (aPnt.y() - myMousePnt.y());
+          aParent->move(aX, aY);
+          myMousePnt = aPnt;
+        }
+        return true;
+      }
+    }
+      break;
+    case QEvent::MouseButtonDblClick:
+      if (theObj == myPicture) {
+        myMoving = false;
+        if (myLastState == MaximizedState) {
+          showMaximized();
         } else {
-            myViewPort->show();
-            myPicture->hide();
+          showNormal();
         }
-    } else
-        QWidget::changeEvent(theEvent);
+        myViewer->onWindowActivated((QMdiSubWindow*) parentWidget());
+
+        //  In order to avoid frosen background in toolbars when it shown as a second view
+        QTimer::singleShot(20, parentWidget(), SLOT(setFocus()));
+
+        return true;
+      }
+  }
+  return false;
 }
 
-void XGUI_ViewWindow::onClose()
+//****************************************************************
+bool XGUI_ViewWindow::processViewPort(QEvent *theEvent)
 {
-    if (parentWidget())
-        parentWidget()->close();
+  switch (theEvent->type()) {
+    case QEvent::MouseButtonPress:
+      vpMousePressEvent((QMouseEvent*) theEvent);
+      return true;
+
+    case QEvent::MouseButtonRelease:
+      vpMouseReleaseEvent((QMouseEvent*) theEvent);
+      return true;
+
+    case QEvent::MouseMove:
+      vpMouseMoveEvent((QMouseEvent*) theEvent);
+      return true;
 
+    case QEvent::MouseButtonDblClick:
+      emit mouseDoubleClicked(this, (QMouseEvent*) theEvent);
+      return true;
+    case QEvent::Wheel: {
+      QWheelEvent* aEvent = (QWheelEvent*) theEvent;
+      myViewPort->startZoomAtPoint(aEvent->x(), aEvent->y());
+      double aDelta = (double) (aEvent->delta()) / (15 * 8);
+      int x = aEvent->x();
+      int y = aEvent->y();
+      int x1 = (int) (aEvent->x() + width() * aDelta / 100);
+      int y1 = (int) (aEvent->y() + height() * aDelta / 100);
+      myViewPort->zoom(x, y, x1, y1);
+    }
+      return true;
+  }
+  return false;
 }
 
-void XGUI_ViewWindow::enterEvent(QEvent* theEvent)
+//****************************************************************
+bool XGUI_ViewWindow::eventFilter(QObject *theObj, QEvent *theEvent)
 {
-    if (!isMinimized())
-        aViewBar->show();
-    aWindowBar->show();
+  if ((theObj == myGripWgt) || (theObj == myPicture)) {
+    if (processWindowControls(theObj, theEvent))
+      return true;
+  } else if (theObj == myViewPort) {
+    if (processViewPort(theEvent)) {
+      return true;
+    }
+    if (theEvent->type() == QEvent::KeyRelease) {
+      emit keyReleased(this, (QKeyEvent*) theEvent);
+      return true;
+    }
+  }
+  return QFrame::eventFilter(theObj, theEvent);
 }
 
-void XGUI_ViewWindow::leaveEvent(QEvent* theEvent)
+//****************************************************************
+XGUI_ViewWindow::OperationType XGUI_ViewWindow::getButtonState(
+    QMouseEvent* theEvent, XGUI::InteractionStyle theInteractionStyle)
 {
-    aViewBar->hide();
-    aWindowBar->hide();
+  OperationType aOp = NOTHING;
+  XGUI::InteractionStyle aStyle = (XGUI::InteractionStyle) theInteractionStyle;
+  if ((theEvent->modifiers() == XGUI_Viewer::myStateMap[aStyle][XGUI::ZOOM])
+      && (theEvent->buttons() == XGUI_Viewer::myButtonMap[aStyle][XGUI::ZOOM]))
+    aOp = ZOOMVIEW;
+  else if ((theEvent->modifiers() == XGUI_Viewer::myStateMap[aStyle][XGUI::PAN])
+      && (theEvent->buttons() == XGUI_Viewer::myButtonMap[aStyle][XGUI::PAN]))
+    aOp = PANVIEW;
+  else if ((theEvent->modifiers() == XGUI_Viewer::myStateMap[aStyle][XGUI::ROTATE])
+      && (theEvent->buttons() == XGUI_Viewer::myButtonMap[aStyle][XGUI::ROTATE])
+      && (my2dMode == XGUI::No2dMode))
+    aOp = ROTATE;
+
+  return aOp;
 }
 
+//****************************************************************
+void XGUI_ViewWindow::vpMousePressEvent(QMouseEvent* theEvent)
+{
+  myStartX = theEvent->x();
+  myStartY = theEvent->y();
+  XGUI::InteractionStyle anInteractionStyle = interactionStyle();
 
-void XGUI_ViewWindow::onMinimize()
+  // in "key free" interaction style zoom operation is activated by two buttons (simultaneously pressed),
+  // which are assigned for pan and rotate - these operations are activated immediately after pressing 
+  // of the first button, so it is necessary to switch to zoom when the second button is pressed
+  bool aSwitchToZoom = false;
+  if ((anInteractionStyle == XGUI::KEY_FREE) && (myOperation == PANVIEW || myOperation == ROTATE)) {
+    aSwitchToZoom = getButtonState(theEvent, anInteractionStyle) == ZOOMVIEW;
+  }
+
+  switch (myOperation) {
+    case WINDOWFIT:
+      if (theEvent->button() == Qt::LeftButton)
+        emit vpTransformationStarted(WINDOWFIT);
+      break;
+
+    case PANGLOBAL:
+      if (theEvent->button() == Qt::LeftButton)
+        emit vpTransformationStarted(PANGLOBAL);
+      break;
+
+    case ZOOMVIEW:
+      if (theEvent->button() == Qt::LeftButton) {
+        myViewPort->startZoomAtPoint(myStartX, myStartY);
+        emit vpTransformationStarted(ZOOMVIEW);
+      }
+      break;
+
+    case PANVIEW:
+      if (aSwitchToZoom) {
+        myViewPort->startZoomAtPoint(myStartX, myStartY);
+        activateZoom();
+      } else if (theEvent->button() == Qt::LeftButton)
+        emit vpTransformationStarted(PANVIEW);
+      break;
+
+    case ROTATE:
+      if (aSwitchToZoom) {
+        myViewPort->startZoomAtPoint(myStartX, myStartY);
+        activateZoom();
+      } else if (theEvent->button() == Qt::LeftButton) {
+        myViewPort->startRotation(myStartX, myStartY, myCurrPointType, mySelectedPoint);
+        emit vpTransformationStarted(ROTATE);
+      }
+      break;
+
+    default:
+      /*  Try to activate a transformation */
+      OperationType aState;
+      if (interactionStyle() == XGUI::STANDARD)
+        aState = getButtonState(theEvent, anInteractionStyle);
+      else {
+        aState = XGUI_ViewWindow::NOTHING;
+        myIsKeyFree = true;
+      }
+      switch (aState) {
+        case ZOOMVIEW:
+          myViewPort->startZoomAtPoint(myStartX, myStartY);
+          activateZoom();
+          break;
+        case PANVIEW:
+          activatePanning();
+          break;
+        case ROTATE:
+          activateRotation();
+          myViewPort->startRotation(myStartX, myStartY, myCurrPointType, mySelectedPoint);
+          break;
+        default:
+          if (myRotationPointSelection) {
+            if (theEvent->button() == Qt::LeftButton) {
+              Handle(AIS_InteractiveContext) ic = myViewer->AISContext();
+              ic->Select();
+              for (ic->InitSelected(); ic->MoreSelected(); ic->NextSelected()) {
+                TopoDS_Shape aShape = ic->SelectedShape();
+                if (!aShape.IsNull() && aShape.ShapeType() == TopAbs_VERTEX) {
+                  gp_Pnt aPnt = BRep_Tool::Pnt(TopoDS::Vertex(ic->SelectedShape()));
+                  /*if ( mySetRotationPointDlg ) {
+                   myRotationPointSelection = false;
+                   mySetRotationPointDlg->setCoords(aPnt.X(), aPnt.Y(), aPnt.Z());
+                   }*/
+                } else {
+                  myCurrPointType = myPrevPointType;
+                  break;
+                }
+              }
+              if (ic->NbSelected() == 0)
+                myCurrPointType = myPrevPointType;
+              //if ( mySetRotationPointDlg ) mySetRotationPointDlg->toggleChange();
+              ic->CloseAllContexts();
+              myOperation = NOTHING;
+              myViewPort->setCursor(myCursor);
+              myCursorIsHand = false;
+              myRotationPointSelection = false;
+            }
+          } else
+            emit mousePressed(this, theEvent);
+          break;
+      }
+      /* notify that we start a transformation */
+      if (transformRequested())
+        emit vpTransformationStarted(myOperation);
+  }
+  if (transformRequested())
+    setTransformInProcess(true);
+
+  /* we may need it for sketching... */
+  /*    if ( l_mbPressEvent )
+   delete l_mbPressEvent;
+   l_mbPressEvent = new QMouseEvent( *theEvent );*/
+}
+
+//****************************************************************
+void XGUI_ViewWindow::contextMenuEvent(QContextMenuEvent* theEvent)
+{
+  if (theEvent->modifiers() == Qt::NoModifier) {
+    // Temporary: has to be removed when viewer popup will be defined
+    //QFrame::contextMenuEvent(theEvent);
+    emit contextMenuRequested(theEvent);
+  }
+}
+
+//****************************************************************
+void XGUI_ViewWindow::vpMouseReleaseEvent(QMouseEvent* theEvent)
+{
+  switch (myOperation) {
+    case NOTHING: {
+      int prevState = myCurSketch;
+      /*            if(theEvent->button() == Qt::RightButton) {
+       QList<OCCViewer_ViewSketcher*>::Iterator it;
+       for ( it = mySketchers.begin(); it != mySketchers.end() && myCurSketch != -1; ++it ) {
+       OCCViewer_ViewSketcher* sk = (*it);
+       if( ( sk->sketchButton() & theEvent->button() ) && sk->sketchButton() == myCurSketch )
+       myCurSketch = -1;
+       }
+       }
+       */
+      emit mouseReleased(this, theEvent);
+    }
+      break;
+    case ROTATE:
+      myViewPort->endRotation();
+      resetState();
+      break;
+
+    case PANVIEW:
+    case ZOOMVIEW:
+      resetState();
+      break;
+
+    case PANGLOBAL:
+      if (theEvent->button() == Qt::LeftButton) {
+        myViewPort->setCenter(theEvent->x(), theEvent->y());
+        myViewPort->getView()->SetScale(myCurScale);
+        resetState();
+      }
+      break;
+
+    case WINDOWFIT:
+      if (theEvent->button() == Qt::LeftButton) {
+        myCurrX = theEvent->x();
+        myCurrY = theEvent->y();
+        drawRect();
+        QRect rect = XGUI_Tools::makeRect(myStartX, myStartY, myCurrX, myCurrY);
+        if (!rect.isEmpty())
+          myViewPort->fitRect(rect);
+        endDrawRect();
+        resetState();
+      }
+      break;
+  }
+
+  // NOTE: viewer 3D detects a rectangle of selection using this event
+  // so we must emit it BEFORE resetting the selection rectangle
+  if (theEvent->button() == Qt::LeftButton && myDrawRect) {
+    drawRect();
+    endDrawRect();
+    resetState();
+    myViewPort->update();
+  }
+  /*    if ( l_mbPressEvent ) {
+   delete l_mbPressEvent;
+   l_mbPressEvent = 0;
+   }*/
+}
+
+//****************************************************************
+void XGUI_ViewWindow::vpMouseMoveEvent(QMouseEvent* theEvent)
 {
-    QPixmap aPMap = grab();
-    myPicture->setPixmap(aPMap.scaled(110, 80));
-}
\ No newline at end of file
+  if (myIsKeyFree && interactionStyle() == XGUI::KEY_FREE) {
+    myIsKeyFree = false;
+    switch (getButtonState(theEvent, interactionStyle())) {
+      case ZOOMVIEW:
+        myViewPort->startZoomAtPoint(myStartX, myStartY);
+        activateZoom();
+        break;
+      case PANVIEW:
+        activatePanning();
+        break;
+      case ROTATE:
+        activateRotation();
+        myViewPort->startRotation(myStartX, myStartY, myCurrPointType, mySelectedPoint);
+        break;
+      default:
+        break;
+    }
+  }
+
+  myCurrX = theEvent->x();
+  myCurrY = theEvent->y();
+  switch (myOperation) {
+    case ROTATE:
+      myViewPort->rotate(myCurrX, myCurrY, myCurrPointType, mySelectedPoint);
+      break;
+
+    case ZOOMVIEW:
+      myViewPort->zoom(myStartX, myStartY, myCurrX, myCurrY);
+      myStartX = myCurrX;
+      myStartY = myCurrY;
+      break;
+
+    case PANVIEW:
+      myViewPort->pan(myCurrX - myStartX, myStartY - myCurrY);
+      myStartX = myCurrX;
+      myStartY = myCurrY;
+      break;
+
+    case PANGLOBAL:
+      break;
+
+    default:
+      if (myRotationPointSelection /*|| isSketcherStyle()*/) {
+        emit mouseMoving(this, theEvent);
+      } else {
+        int aState = theEvent->modifiers();
+        int aButton = theEvent->buttons();
+        int anInteractionStyle = interactionStyle();
+        if (((anInteractionStyle == XGUI::STANDARD) && (aButton == Qt::LeftButton)
+            && (aState == Qt::NoModifier || Qt::ShiftModifier))
+            || ((anInteractionStyle == XGUI::KEY_FREE) && (aButton == Qt::LeftButton)
+                && (aState == Qt::ControlModifier
+                    || aState == (Qt::ControlModifier | Qt::ShiftModifier)))) {
+          myDrawRect = myEnableDrawMode;
+          if (myDrawRect) {
+            drawRect();
+            if (!myCursorIsHand) {   // we are going to sketch a rectangle
+              QCursor handCursor(Qt::PointingHandCursor);
+              myCursorIsHand = true;
+              myCursor = cursor();
+              myViewPort->setCursor(handCursor);
+            }
+          }
+          emit mouseMoving(this, theEvent);
+        } /* else if ( ( (anInteractionStyle == XGUI::STANDARD) &&
+         (aButton == Qt::RightButton) && 
+         ( aState == Qt::NoModifier || Qt::ShiftModifier ) ) ||
+         ( (anInteractionStyle == XGUI::KEY_FREE) &&
+         (aButton == Qt::RightButton) && 
+         ( aState == Qt::ControlModifier || aState == ( Qt::ControlModifier|Qt::ShiftModifier ) ) ) ) {
+         OCCViewer_ViewSketcher* sketcher = 0;
+         QList<OCCViewer_ViewSketcher*>::Iterator it;
+         for ( it = mySketchers.begin(); it != mySketchers.end() && !sketcher; ++it ) {
+         OCCViewer_ViewSketcher* sk = (*it);
+         if( sk->isDefault() && sk->sketchButton() == aButton )
+         sketcher = sk;
+         }
+         if ( sketcher && myCurSketch == -1 ) {
+         activateSketching( sketcher->type() );
+         if ( mypSketcher ) {
+         myCurSketch = mypSketcher->sketchButton();
+
+         if ( l_mbPressEvent )  {
+         QApplication::sendEvent( getViewPort(), l_mbPressEvent );
+         delete l_mbPressEvent;
+         l_mbPressEvent = 0;
+         }
+         QApplication::sendEvent( getViewPort(), theEvent );
+         }
+         }
+         } */else
+          emit mouseMoving(this, theEvent);
+      }
+  }
+}
+
+/*!
+ \brief Draw rubber band rectangle.
+ */
+void XGUI_ViewWindow::drawRect()
+{
+  if (!myRectBand) {
+    myRectBand = new XGUI_RectRubberBand(myViewPort);
+  }
+
+  myRectBand->setUpdatesEnabled(false);
+  QRect aRect = XGUI_Tools::makeRect(myStartX, myStartY, myCurrX, myCurrY);
+  myRectBand->initGeometry(aRect);
+
+  if (!myRectBand->isVisible())
+    myRectBand->show();
+
+  myRectBand->setUpdatesEnabled(true);
+}
+
+/*!
+ \brief Clear rubber band rectangle on the end on the dragging operation.
+ */
+void XGUI_ViewWindow::endDrawRect()
+{
+  if (myRectBand) {
+    myRectBand->clearGeometry();
+    myRectBand->hide();
+  }
+}
+
+void XGUI_ViewWindow::activateZoom()
+{
+  if (!transformRequested() && !myCursorIsHand)
+    myCursor = cursor(); /* save old cursor */
+
+  if (myOperation != ZOOMVIEW) {
+    QPixmap zoomPixmap(imageZoomCursor);
+    QCursor zoomCursor(zoomPixmap);
+    if (setTransformRequested(ZOOMVIEW))
+      myViewPort->setCursor(zoomCursor);
+  }
+}
+
+bool XGUI_ViewWindow::transformRequested() const
+{
+  return (myOperation != NOTHING);
+}
+
+/*!
+ \brief Start delayed viewer operation.
+ */
+bool XGUI_ViewWindow::setTransformRequested(OperationType op)
+{
+  bool ok = transformEnabled(op);
+  myOperation = ok ? op : NOTHING;
+  myViewPort->setMouseTracking(myOperation == NOTHING);
+  return ok;
+}
+
+/*!
+ Set enabled state of transformation (rotate, zoom, etc)
+ */
+void XGUI_ViewWindow::setTransformEnabled(const OperationType id, const bool on)
+{
+  if (id != NOTHING)
+    myStatus.insert(id, on);
+}
+
+/*!
+ \return enabled state of transformation (rotate, zoom, etc)
+ */
+bool XGUI_ViewWindow::transformEnabled(const OperationType id) const
+{
+  return myStatus.contains(id) ? myStatus[id] : true;
+}
+
+/*!
+ \brief Start panning operation.
+
+ Sets the corresponding cursor for the widget.
+ */
+void XGUI_ViewWindow::activatePanning()
+{
+  if (!transformRequested() && !myCursorIsHand)
+    myCursor = cursor();                // save old cursor
+
+  if (myOperation != PANVIEW) {
+    QCursor panCursor(Qt::SizeAllCursor);
+    if (setTransformRequested(PANVIEW))
+      myViewPort->setCursor(panCursor);
+  }
+}
+
+/*!
+ \brief Start global panning operation
+
+ Sets the corresponding cursor for the widget.
+ */
+void XGUI_ViewWindow::activateGlobalPanning()
+{
+  Handle(V3d_View) aView3d = myViewPort->getView();
+  if (!aView3d.IsNull()) {
+    QPixmap globalPanPixmap(imageCrossCursor);
+    QCursor glPanCursor(globalPanPixmap);
+    myCurScale = aView3d->Scale();
+    aView3d->FitAll(0.01, false);
+    myCursor = cursor();                // save old cursor
+    myViewPort->fitAll();  // fits view before selecting a new scene center
+    if (setTransformRequested(PANGLOBAL))
+      myViewPort->setCursor(glPanCursor);
+  }
+}
+
+/*!
+ \brief Start rotation operation
+
+ Sets the corresponding cursor for the widget.
+ */
+void XGUI_ViewWindow::activateRotation()
+{
+  if (!transformRequested() && !myCursorIsHand)
+    myCursor = cursor();                // save old cursor
+
+  if (myOperation != ROTATE) {
+    QPixmap rotatePixmap(imageRotateCursor);
+    QCursor rotCursor(rotatePixmap);
+    if (setTransformRequested(ROTATE))
+      myViewPort->setCursor(rotCursor);
+  }
+}
+
+/*!
+ \brief Reset the viewport to its initial state
+ ( no transformations in process etc. )
+ */
+void XGUI_ViewWindow::resetState()
+{
+  myDrawRect = false;
+
+  if (myRotationPointSelection) {
+    QCursor handCursor(Qt::PointingHandCursor);
+    myViewPort->setCursor(handCursor);
+  } else {
+    if (transformRequested() || myCursorIsHand)
+      myViewPort->setCursor(myCursor);
+    myCursorIsHand = false;
+  }
+
+  if (transformRequested())
+    emit vpTransformationFinished(myOperation);
+
+  setTransformInProcess(false);
+  setTransformRequested(NOTHING);
+}
+
+Qtx::BackgroundData XGUI_ViewWindow::background() const
+{
+  return myViewPort ? myViewPort->background() : Qtx::BackgroundData();
+}
+
+void XGUI_ViewWindow::setBackground(const Qtx::BackgroundData& theBackground)
+{
+  if (myViewPort)
+    myViewPort->setBackground(theBackground);
+}
+
+/*!
+ \brief Create one more window with same content.
+ */
+void XGUI_ViewWindow::cloneView()
+{
+  QMdiSubWindow* vw = myViewer->createView();
+  XGUI_ViewWindow* aNewWnd = static_cast<XGUI_ViewWindow*>(vw->widget());
+  aNewWnd->viewPort()->syncronizeWith(myViewPort);
+
+  emit viewCloned(vw);
+
+  //  In order to avoid frosen background in toolbars when it shown as a second view
+  QTimer::singleShot(20, vw, SLOT(setFocus()));
+}
+
+void XGUI_ViewWindow::dumpView()
+{
+  QString aFilter(tr("Images Files (*.bmp *.png *.jpg *.jpeg *.eps *.ps)"));
+  QString aSelectedFilter;
+  QString aFileName = QFileDialog::getSaveFileName(this, "Save picture", QString(), aFilter,
+                                                   &aSelectedFilter);
+  if (!aFileName.isNull()) {
+    QApplication::setOverrideCursor(Qt::WaitCursor);
+    QImage aPicture = myViewPort->dumpView();
+
+    QString aFmt = XGUI_Tools::extension(aFileName).toUpper();
+    if (aFmt.isEmpty())
+      aFmt = QString("BMP");  // default format
+    else if (aFmt == "JPG")
+      aFmt = "JPEG";
+
+    Handle(Visual3d_View) a3dView = myViewPort->getView()->View();
+    if (aFmt == "PS")
+      a3dView->Export(strdup(qPrintable(aFileName)), Graphic3d_EF_PostScript);
+    else if (aFmt == "EPS")
+      a3dView->Export(strdup(qPrintable(aFileName)), Graphic3d_EF_EnhPostScript);
+    else
+      aPicture.save(aFileName, aFmt.toLatin1());
+    QApplication::restoreOverrideCursor();
+  }
+}
+
+void XGUI_ViewWindow::fitAll()
+{
+  emit vpTransformationStarted(FITALLVIEW);
+  myViewPort->fitAll();
+  emit vpTransformationFinished(FITALLVIEW);
+}
+
+/*!
+ \brief Starts fit operation.
+
+ Sets the corresponding cursor for the widget.
+ */
+void XGUI_ViewWindow::activateWindowFit()
+{
+  if (!transformRequested() && !myCursorIsHand)
+    myCursor = cursor(); /* save old cursor */
+
+  if (myOperation != WINDOWFIT) {
+    QCursor handCursor(Qt::PointingHandCursor);
+    if (setTransformRequested(WINDOWFIT)) {
+      myViewPort->setCursor(handCursor);
+      myCursorIsHand = true;
+    }
+  }
+}
+
+/*!
+ \brief Perform "front view" transformation.
+ */
+void XGUI_ViewWindow::frontView()
+{
+  emit vpTransformationStarted(FRONTVIEW);
+  Handle(V3d_View) aView3d = myViewPort->getView();
+  if (!aView3d.IsNull())
+    aView3d->SetProj(V3d_Xpos);
+  myViewPort->fitAll();
+  emit vpTransformationFinished(FRONTVIEW);
+}
+
+/*!
+ \brief Perform "back view" transformation.
+ */
+void XGUI_ViewWindow::backView()
+{
+  emit vpTransformationStarted(BACKVIEW);
+  Handle(V3d_View) aView3d = myViewPort->getView();
+  if (!aView3d.IsNull())
+    aView3d->SetProj(V3d_Xneg);
+  myViewPort->fitAll();
+  emit vpTransformationFinished(BACKVIEW);
+}
+
+/*!
+ \brief Perform "top view" transformation.
+ */
+void XGUI_ViewWindow::topView()
+{
+  emit vpTransformationStarted(TOPVIEW);
+  Handle(V3d_View) aView3d = myViewPort->getView();
+  if (!aView3d.IsNull())
+    aView3d->SetProj(V3d_Zpos);
+  myViewPort->fitAll();
+  emit vpTransformationFinished(TOPVIEW);
+}
+
+/*!
+ \brief Perform "bottom view" transformation.
+ */
+void XGUI_ViewWindow::bottomView()
+{
+  emit vpTransformationStarted(BOTTOMVIEW);
+  Handle(V3d_View) aView3d = myViewPort->getView();
+  if (!aView3d.IsNull())
+    aView3d->SetProj(V3d_Zneg);
+  myViewPort->fitAll();
+  emit vpTransformationFinished(BOTTOMVIEW);
+}
+
+/*!
+ \brief Perform "left view" transformation.
+ */
+void XGUI_ViewWindow::leftView()
+{
+  emit vpTransformationStarted(LEFTVIEW);
+  Handle(V3d_View) aView3d = myViewPort->getView();
+  if (!aView3d.IsNull())
+    aView3d->SetProj(V3d_Yneg);
+  myViewPort->fitAll();
+  emit vpTransformationFinished(LEFTVIEW);
+}
+
+/*!
+ \brief Perform "right view" transformation.
+ */
+void XGUI_ViewWindow::rightView()
+{
+  emit vpTransformationStarted(RIGHTVIEW);
+  Handle(V3d_View) aView3d = myViewPort->getView();
+  if (!aView3d.IsNull())
+    aView3d->SetProj(V3d_Ypos);
+  myViewPort->fitAll();
+  emit vpTransformationFinished(RIGHTVIEW);
+}
+
+void XGUI_ViewWindow::reset()
+{
+  emit vpTransformationStarted(RESETVIEW);
+  bool upd = myViewPort->getView()->SetImmediateUpdate(false);
+  myViewPort->getView()->Reset(false);
+  myViewPort->fitAll(false, true, false);
+  myViewPort->getView()->SetImmediateUpdate(upd);
+  myViewPort->getView()->Update();
+  emit vpTransformationFinished(RESETVIEW);
+}
+
+void XGUI_ViewWindow::updateToolBar()
+{
+  myGripWgt->update();
+  myViewBar->update();
+  myWindowBar->update();
+}
+
+/*!
+ \brief Update state of enable draw mode state.
+ */
+void XGUI_ViewWindow::updateEnabledDrawMode()
+{
+  myEnableDrawMode = myViewer->isSelectionEnabled() && myViewer->isMultiSelectionEnabled();
+}