Salome HOME
Merge branch 'master' of newgeom:newgeom.git
[modules/shaper.git] / src / XGUI / XGUI_ViewPort.cpp
index 2202683d58d01ceac9b7d94707e96723984f173d..d5f31152b108181eba8189ee916f658800eed108 100644 (file)
@@ -1,27 +1,17 @@
-#ifndef WIN32
-# ifndef GLX_GLXEXT_LEGACY
-#  define GLX_GLXEXT_LEGACY
-# endif
-# include <GL/glx.h>
-# include <dlfcn.h>
-#else
-# include <windows.h>
-# include <wingdi.h>
-#endif
-
 #include "XGUI_ViewPort.h"
 #include "XGUI_ViewWindow.h"
 #include "XGUI_Viewer.h"
 #include "XGUI_Constants.h"
 
-#include <QGuiApplication>
 #include <QPaintEvent>
 #include <QPainter>
 #include <QFileInfo>
+#include <QApplication>
 
 #include <V3d_OrthographicView.hxx>
 #include <V3d_PerspectiveView.hxx>
 #include <Visual3d_View.hxx>
+#include <Graphic3d_GraphicDriver.hxx>
 
 #ifdef WIN32
 #include <WNT_Window.hxx>
@@ -52,208 +42,17 @@ Handle(Aspect_Window) CreateCasWindow(const Handle(V3d_View)& view, WId winId)
   return viewWindow;
 }
 
-class OpenGLUtils_FrameBuffer
-{
-public:
-  OpenGLUtils_FrameBuffer();
-  ~OpenGLUtils_FrameBuffer();
-
-  bool init(const GLsizei&, const GLsizei&);
-  void release();
-
-  void bind();
-  void unbind();
-
-private:
-  GLuint textureId;
-  GLuint fboId;
-  GLuint rboId;
-};
-
-#ifndef APIENTRY
-#define APIENTRY
-#endif
-#ifndef APIENTRYP
-#define APIENTRYP APIENTRY *
-#endif
-
-#ifndef GL_FRAMEBUFFER_EXT
-#define GL_FRAMEBUFFER_EXT                0x8D40
-#endif
-
-#ifndef GL_RENDERBUFFER_EXT
-#define GL_RENDERBUFFER_EXT               0x8D41
-#endif
-
-#ifndef GL_COLOR_ATTACHMENT0_EXT
-#define GL_COLOR_ATTACHMENT0_EXT          0x8CE0
-#endif
-
-#ifndef GL_DEPTH_ATTACHMENT_EXT
-#define GL_DEPTH_ATTACHMENT_EXT           0x8D00
-#endif
-
-#ifndef GL_FRAMEBUFFER_COMPLETE_EXT
-#define GL_FRAMEBUFFER_COMPLETE_EXT       0x8CD5
-#endif
-
-typedef void (APIENTRYP PFNGLGENFRAMEBUFFERSEXTPROC)(GLsizei n, GLuint *framebuffers);
-typedef void (APIENTRYP PFNGLBINDFRAMEBUFFEREXTPROC)(GLenum target, GLuint framebuffer);
-typedef void (APIENTRYP PFNGLFRAMEBUFFERTEXTURE2DEXTPROC)(GLenum target, GLenum attachment,
-                                                          GLenum textarget, GLuint texture,
-                                                          GLint level);
-typedef GLenum (APIENTRYP PFNGLCHECKFRAMEBUFFERSTATUSEXTPROC)(GLenum target);
-typedef void (APIENTRYP PFNGLDELETEFRAMEBUFFERSEXTPROC)(GLsizei n, const GLuint *framebuffers);
-typedef void (APIENTRYP PFNGLGENRENDERBUFFERSEXTPROC)(GLsizei n, GLuint *renderbuffers);
-typedef void (APIENTRYP PFNGLBINDRENDERBUFFEREXTPROC)(GLenum target, GLuint renderbuffer);
-typedef void (APIENTRYP PFNGLRENDERBUFFERSTORAGEEXTPROC)(GLenum target, GLenum internalformat,
-                                                         GLsizei width, GLsizei height);
-typedef void (APIENTRYP PFNGLFRAMEBUFFERRENDERBUFFEREXTPROC)(GLenum target, GLenum attachment,
-                                                             GLenum renderbuffertarget,
-                                                             GLuint renderbuffer);
-typedef void (APIENTRYP PFNGLDELETERENDERBUFFERSEXTPROC)(GLsizei n, const GLuint *renderbuffers);
-
-static PFNGLGENFRAMEBUFFERSEXTPROC vglGenFramebuffersEXT = NULL;
-static PFNGLBINDFRAMEBUFFEREXTPROC vglBindFramebufferEXT = NULL;
-static PFNGLFRAMEBUFFERTEXTURE2DEXTPROC vglFramebufferTexture2DEXT = NULL;
-static PFNGLCHECKFRAMEBUFFERSTATUSEXTPROC vglCheckFramebufferStatusEXT = NULL;
-static PFNGLDELETEFRAMEBUFFERSEXTPROC vglDeleteFramebuffersEXT = NULL;
-static PFNGLGENRENDERBUFFERSEXTPROC vglGenRenderbuffersEXT = NULL;
-static PFNGLBINDRENDERBUFFEREXTPROC vglBindRenderbufferEXT = NULL;
-static PFNGLRENDERBUFFERSTORAGEEXTPROC vglRenderbufferStorageEXT = NULL;
-static PFNGLFRAMEBUFFERRENDERBUFFEREXTPROC vglFramebufferRenderbufferEXT = NULL;
-static PFNGLDELETERENDERBUFFERSEXTPROC vglDeleteRenderbuffersEXT = NULL;
-
-#ifndef WIN32
-#define GL_GetProcAddress( x ) glXGetProcAddressARB( (const GLubyte*)x )
-#else
-#define GL_GetProcAddress( x ) wglGetProcAddress( (const LPCSTR)x )
-#endif
-
-bool InitializeEXT()
-{
-  vglGenFramebuffersEXT = (PFNGLGENFRAMEBUFFERSEXTPROC) GL_GetProcAddress("glGenFramebuffersEXT");
-  vglBindFramebufferEXT = (PFNGLBINDFRAMEBUFFEREXTPROC) GL_GetProcAddress("glBindFramebufferEXT");
-  vglFramebufferTexture2DEXT = (PFNGLFRAMEBUFFERTEXTURE2DEXTPROC) GL_GetProcAddress(
-      "glFramebufferTexture2DEXT");
-  vglCheckFramebufferStatusEXT = (PFNGLCHECKFRAMEBUFFERSTATUSEXTPROC) GL_GetProcAddress(
-      "glCheckFramebufferStatusEXT");
-  vglDeleteFramebuffersEXT = (PFNGLDELETEFRAMEBUFFERSEXTPROC) GL_GetProcAddress(
-      "glDeleteFramebuffersEXT");
-  vglGenRenderbuffersEXT = (PFNGLGENRENDERBUFFERSEXTPROC) GL_GetProcAddress(
-      "glGenRenderbuffersEXT");
-  vglBindRenderbufferEXT = (PFNGLBINDRENDERBUFFEREXTPROC) GL_GetProcAddress(
-      "glBindRenderbufferEXT");
-  vglRenderbufferStorageEXT = (PFNGLRENDERBUFFERSTORAGEEXTPROC) GL_GetProcAddress(
-      "glRenderbufferStorageEXT");
-  vglFramebufferRenderbufferEXT = (PFNGLFRAMEBUFFERRENDERBUFFEREXTPROC) GL_GetProcAddress(
-      "glFramebufferRenderbufferEXT");
-  vglDeleteRenderbuffersEXT = (PFNGLDELETERENDERBUFFERSEXTPROC) GL_GetProcAddress(
-      "glDeleteRenderbuffersEXT");
-
-  bool ok = vglGenFramebuffersEXT && vglBindFramebufferEXT && vglFramebufferTexture2DEXT
-      && vglCheckFramebufferStatusEXT && vglDeleteFramebuffersEXT && vglGenRenderbuffersEXT
-      && vglBindRenderbufferEXT && vglRenderbufferStorageEXT && vglFramebufferRenderbufferEXT
-      && vglDeleteRenderbuffersEXT;
-
-  return ok;
-}
-
-static bool IsEXTInitialized = InitializeEXT();
-
-OpenGLUtils_FrameBuffer::OpenGLUtils_FrameBuffer()
-    : textureId(0), fboId(0), rboId(0)
-{
-}
-
-OpenGLUtils_FrameBuffer::~OpenGLUtils_FrameBuffer()
-{
-  release();
-}
-
-bool OpenGLUtils_FrameBuffer::init(const GLsizei& xSize, const GLsizei& ySize)
-{
-  char* ext = (char*) glGetString(GL_EXTENSIONS);
-  if (!IsEXTInitialized || strstr(ext, "GL_EXT_framebuffer_object") == NULL) {
-    qDebug( "Initializing OpenGL FrameBuffer extension failed");
-    return false;
-  }
-
-  // create a texture object
-  glEnable (GL_TEXTURE_2D);
-  glGenTextures(1, &textureId);
-  glBindTexture(GL_TEXTURE_2D, textureId);
-  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
-  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
-  glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, xSize, ySize, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
-  glBindTexture(GL_TEXTURE_2D, 0);
-
-  // create a renderbuffer object to store depth info
-  vglGenRenderbuffersEXT(1, &rboId);
-  vglBindRenderbufferEXT( GL_RENDERBUFFER_EXT, rboId);
-  vglRenderbufferStorageEXT( GL_RENDERBUFFER_EXT, GL_DEPTH_COMPONENT, xSize, ySize);
-  vglBindRenderbufferEXT( GL_RENDERBUFFER_EXT, 0);
-
-  // create a framebuffer object
-  vglGenFramebuffersEXT(1, &fboId);
-  vglBindFramebufferEXT( GL_FRAMEBUFFER_EXT, fboId);
-
-  // attach the texture to FBO color attachment point
-  vglFramebufferTexture2DEXT( GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_2D,
-                             textureId, 0);
-
-  // attach the renderbuffer to depth attachment point
-  vglFramebufferRenderbufferEXT( GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT,
-  GL_RENDERBUFFER_EXT,
-                                rboId);
-
-  // check FBO status
-  GLenum status = vglCheckFramebufferStatusEXT( GL_FRAMEBUFFER_EXT);
-
-  // Unbind FBO
-  vglBindFramebufferEXT( GL_FRAMEBUFFER_EXT, 0);
-
-  return status == GL_FRAMEBUFFER_COMPLETE_EXT;
-}
-
-void OpenGLUtils_FrameBuffer::release()
-{
-  if (!IsEXTInitialized)
-    return;
-
-  glDeleteTextures(1, &textureId);
-  textureId = 0;
-
-  vglDeleteFramebuffersEXT(1, &fboId);
-  fboId = 0;
-
-  vglDeleteRenderbuffersEXT(1, &rboId);
-  rboId = 0;
-}
-
-void OpenGLUtils_FrameBuffer::bind()
-{
-  if (!IsEXTInitialized)
-    return;
-
-  vglBindFramebufferEXT( GL_FRAMEBUFFER_EXT, fboId);
-}
-
-void OpenGLUtils_FrameBuffer::unbind()
-{
-  if (!IsEXTInitialized)
-    return;
-
-  vglBindFramebufferEXT( GL_FRAMEBUFFER_EXT, 0);
-}
-
 //************************************************************************
 //************************************************************************
 //************************************************************************
 XGUI_ViewPort::XGUI_ViewPort(XGUI_ViewWindow* theParent, const Handle(V3d_Viewer)& theViewer,
                              V3d_TypeOfView theType)
-    : QWidget(theParent), myPaintersRedrawing(false), myScale(1.0), myIsAdvancedZoomingEnabled(
-        false)
+    : QWidget(theParent),
+      myPaintersRedrawing(false),
+      myScale(1.0),
+      myIsAdvancedZoomingEnabled(false),
+      myBgImgHeight(0),
+      myBgImgWidth(0)
 {
   setMouseTracking(true);
   setBackgroundRole(QPalette::NoRole);
@@ -262,6 +61,7 @@ XGUI_ViewPort::XGUI_ViewPort(XGUI_ViewWindow* theParent, const Handle(V3d_Viewer
   setFocusPolicy(Qt::StrongFocus);
   setAttribute(Qt::WA_PaintOnScreen);
   setAttribute(Qt::WA_NoSystemBackground);
+  setAutoFillBackground(false);
 
   if (theType == V3d_ORTHOGRAPHIC) {
     myOrthoView = new V3d_OrthographicView(theViewer);
@@ -272,8 +72,6 @@ XGUI_ViewPort::XGUI_ViewPort(XGUI_ViewWindow* theParent, const Handle(V3d_Viewer
     myActiveView = myPerspView;
   }
   myActiveView->SetSurfaceDetail(V3d_TEX_ALL);
-
-  //setBackground( Qtx::BackgroundData( Qt::black ) ); // set default background
 }
 
 //***********************************************
@@ -289,8 +87,8 @@ bool XGUI_ViewPort::mapView(const Handle(V3d_View)& theView)
 
   if (!mapped(theView)) {
     theView->SetWindow(myWindow);
-    if (theView != activeView())
-      theView->View()->Deactivate();
+    //if (theView != activeView())
+    //theView->View()->Deactivate();
   }
 
   /* create static trihedron (16551: EDF PAL 501) */
@@ -353,78 +151,80 @@ void XGUI_ViewPort::updateBackground()
   //   single-colored).
   // In OCCT 6.5.3 all above mentioned problems are fixed; so, above comment should be removed as soon
   // as SALOME is migrated to OCCT 6.5.3. The same concerns #ifdef statements in the below code
-  switch(myBackground.mode()) {
-  case XGUI::ColorBackground: {
-    QColor c = myBackground.color();
-    if (c.isValid()) {
-      // Unset texture should be done here
-      // ...
-      Quantity_Color qCol(c.red() / 255., c.green() / 255., c.blue() / 255., Quantity_TOC_RGB);
-      activeView()->SetBgGradientStyle(Aspect_GFM_NONE); // cancel gradient background
-      activeView()->SetBgImageStyle(Aspect_FM_NONE); // cancel texture background
-      // then change background color
-      activeView()->SetBackgroundColor(qCol);
-      // update viewer
-      activeView()->Update();
+  switch (myBackground.mode()) {
+    case Qtx::ColorBackground: {
+      QColor c = myBackground.color();
+      if (c.isValid()) {
+        // Unset texture should be done here
+        // ...
+        Quantity_Color qCol(c.red() / 255., c.green() / 255., c.blue() / 255., Quantity_TOC_RGB);
+        activeView()->SetBgGradientStyle(Aspect_GFM_NONE);  // cancel gradient background
+        activeView()->SetBgImageStyle(Aspect_FM_NONE);  // cancel texture background
+        // then change background color
+        activeView()->SetBackgroundColor(qCol);
+        // update viewer
+        activeView()->Update();
+      }
+      break;
     }
-    break;
-  }
-  case XGUI::SimpleGradientBackground: {
-    QColor c1, c2;
-    int type = myBackground.gradient(c1, c2);
-    if (c1.isValid() && type >= XGUI::HorizontalGradient && type <= XGUI::LastGradient) {
-      // Unset texture should be done here
-      // ...
-      // Get colors and set-up gradiented background
-      if (!c2.isValid())
-        c2 = c1;
-      Quantity_Color qCol1(c1.red() / 255., c1.green() / 255., c1.blue() / 255., Quantity_TOC_RGB);
-      Quantity_Color qCol2(c2.red() / 255., c2.green() / 255., c2.blue() / 255., Quantity_TOC_RGB);
-      activeView()->SetBgImageStyle(Aspect_FM_NONE); // cancel texture background
-      switch(type) {
-      case XGUI::HorizontalGradient:
-        activeView()->SetBgGradientColors(qCol1, qCol2, Aspect_GFM_HOR,
-        Standard_True);
-        break;
-      case XGUI::VerticalGradient:
-        activeView()->SetBgGradientColors(qCol1, qCol2, Aspect_GFM_VER,
-        Standard_True);
-        break;
-      case XGUI::Diagonal1Gradient:
-        activeView()->SetBgGradientColors(qCol1, qCol2, Aspect_GFM_DIAG1,
-        Standard_True);
-        break;
-      case XGUI::Diagonal2Gradient:
-        activeView()->SetBgGradientColors(qCol1, qCol2, Aspect_GFM_DIAG2,
-        Standard_True);
-        break;
-      case XGUI::Corner1Gradient:
-        activeView()->SetBgGradientColors(qCol1, qCol2, Aspect_GFM_CORNER1,
-        Standard_True);
-        break;
-      case XGUI::Corner2Gradient:
-        activeView()->SetBgGradientColors(qCol1, qCol2, Aspect_GFM_CORNER2,
-        Standard_True);
-        break;
-      case XGUI::Corner3Gradient:
-        activeView()->SetBgGradientColors(qCol1, qCol2, Aspect_GFM_CORNER3,
-        Standard_True);
-        break;
-      case XGUI::Corner4Gradient:
-        activeView()->SetBgGradientColors(qCol1, qCol2, Aspect_GFM_CORNER4,
-        Standard_True);
-        break;
-      default:
-        break;
+    case Qtx::SimpleGradientBackground: {
+      QColor c1, c2;
+      int type = myBackground.gradient(c1, c2);
+      if (c1.isValid() && type >= XGUI::HorizontalGradient && type <= XGUI::LastGradient) {
+        // Unset texture should be done here
+        // ...
+        // Get colors and set-up gradiented background
+        if (!c2.isValid())
+          c2 = c1;
+        Quantity_Color qCol1(c1.red() / 255., c1.green() / 255., c1.blue() / 255.,
+                             Quantity_TOC_RGB);
+        Quantity_Color qCol2(c2.red() / 255., c2.green() / 255., c2.blue() / 255.,
+                             Quantity_TOC_RGB);
+        activeView()->SetBgImageStyle(Aspect_FM_NONE);  // cancel texture background
+        switch (type) {
+          case XGUI::HorizontalGradient:
+            activeView()->SetBgGradientColors(qCol1, qCol2, Aspect_GFM_HOR,
+            Standard_True);
+            break;
+          case XGUI::VerticalGradient:
+            activeView()->SetBgGradientColors(qCol1, qCol2, Aspect_GFM_VER,
+            Standard_True);
+            break;
+          case XGUI::Diagonal1Gradient:
+            activeView()->SetBgGradientColors(qCol1, qCol2, Aspect_GFM_DIAG1,
+            Standard_True);
+            break;
+          case XGUI::Diagonal2Gradient:
+            activeView()->SetBgGradientColors(qCol1, qCol2, Aspect_GFM_DIAG2,
+            Standard_True);
+            break;
+          case XGUI::Corner1Gradient:
+            activeView()->SetBgGradientColors(qCol1, qCol2, Aspect_GFM_CORNER1,
+            Standard_True);
+            break;
+          case XGUI::Corner2Gradient:
+            activeView()->SetBgGradientColors(qCol1, qCol2, Aspect_GFM_CORNER2,
+            Standard_True);
+            break;
+          case XGUI::Corner3Gradient:
+            activeView()->SetBgGradientColors(qCol1, qCol2, Aspect_GFM_CORNER3,
+            Standard_True);
+            break;
+          case XGUI::Corner4Gradient:
+            activeView()->SetBgGradientColors(qCol1, qCol2, Aspect_GFM_CORNER4,
+            Standard_True);
+            break;
+          default:
+            break;
+        }
       }
+      break;
     }
-    break;
-  }
-  case XGUI::CustomGradientBackground:
-    // NOT IMPLEMENTED YET
-    break;
-  default:
-    break;
+    case Qtx::CustomGradientBackground:
+      // NOT IMPLEMENTED YET
+      break;
+    default:
+      break;
   }
   // VSR: In OCCT before v6.5.3 below code can't be used because of very ugly bug - it has been impossible to
   // clear the background texture image as soon as it was once set to the viewer.
@@ -434,21 +234,21 @@ void XGUI_ViewPort::updateBackground()
     QFileInfo fi(fileName);
     if (!fileName.isEmpty() && fi.exists()) {
       // set texture image: file name and fill mode
-      switch(textureMode) {
-      case XGUI::CenterTexture:
-        activeView()->SetBackgroundImage(fi.absoluteFilePath().toLatin1().constData(),
-                                         Aspect_FM_CENTERED);
-        break;
-      case XGUI::TileTexture:
-        activeView()->SetBackgroundImage(fi.absoluteFilePath().toLatin1().constData(),
-                                         Aspect_FM_TILED);
-        break;
-      case XGUI::StretchTexture:
-        activeView()->SetBackgroundImage(fi.absoluteFilePath().toLatin1().constData(),
-                                         Aspect_FM_STRETCH);
-        break;
-      default:
-        break;
+      switch (textureMode) {
+        case XGUI::CenterTexture:
+          activeView()->SetBackgroundImage(fi.absoluteFilePath().toLatin1().constData(),
+                                           Aspect_FM_CENTERED);
+          break;
+        case XGUI::TileTexture:
+          activeView()->SetBackgroundImage(fi.absoluteFilePath().toLatin1().constData(),
+                                           Aspect_FM_TILED);
+          break;
+        case XGUI::StretchTexture:
+          activeView()->SetBackgroundImage(fi.absoluteFilePath().toLatin1().constData(),
+                                           Aspect_FM_STRETCH);
+          break;
+        default:
+          break;
       }
       activeView()->Update();
     }
@@ -474,7 +274,7 @@ void XGUI_ViewPort::paintEvent(QPaintEvent* theEvent)
   mapView( activeView() );
 #endif
   if (!myWindow.IsNull()) {
-    //QGuiApplication::sync();
+    QApplication::syncX();
     QRect rc = theEvent->rect();
     //if ( !myPaintersRedrawing ) {
     //activeView()->Redraw();
@@ -490,16 +290,18 @@ void XGUI_ViewPort::paintEvent(QPaintEvent* theEvent)
 }
 
 //***********************************************
-void XGUI_ViewPort::resizeEvent(QResizeEvent*)
+void XGUI_ViewPort::resizeEvent(QResizeEvent* theEvent)
 {
 #ifdef WIN32
   /* Win32 : map before first show to avoid flicker */
   if (!mapped(activeView()))
     mapView(activeView());
 #endif
-  //QGuiApplication::sync();
-  if (!activeView().IsNull())
+  QApplication::syncX();
+  if (!activeView().IsNull()) {
     activeView()->MustBeResized();
+  }
+  emit resized();
 }
 
 //***********************************************
@@ -518,39 +320,8 @@ QImage XGUI_ViewPort::dumpView(QRect theRect, bool toUpdate)
     aWidth = theRect.width();
     aHeight = theRect.height();
   }
-  //QApplication::syncX();
-
-  OpenGLUtils_FrameBuffer aFrameBuffer;
-  if (aFrameBuffer.init(aWidth, aHeight)) {
-    QImage anImage(aWidth, aHeight, QImage::Format_RGB32);
-
-    glPushAttrib (GL_VIEWPORT_BIT);
-    glViewport(0, 0, aWidth, aHeight);
-    aFrameBuffer.bind();
-
-    // draw scene
-    if (toUpdate) {
-      if (theRect.isNull())
-        view->Redraw();
-      else
-        view->Redraw(theRect.x(), theRect.y(), theRect.width(), theRect.height());
-    }
-    aFrameBuffer.unbind();
-    glPopAttrib();
-
-    aFrameBuffer.bind();
-    if (theRect.isNull())
-      glReadPixels(0, 0, aWidth, aHeight, GL_RGBA, GL_UNSIGNED_BYTE, anImage.bits());
-    else
-      glReadPixels(theRect.x(), theRect.y(), aWidth, aHeight, GL_RGBA, GL_UNSIGNED_BYTE,
-                   anImage.bits());
-    aFrameBuffer.unbind();
+  QApplication::syncX();
 
-    anImage = anImage.rgbSwapped();
-    anImage = anImage.mirrored();
-    return anImage;
-  }
-  // if frame buffers are unsupported, use old functionality
   unsigned char* data = new unsigned char[aWidth * aHeight * 4];
 
   QPoint p;
@@ -578,36 +349,36 @@ void XGUI_ViewPort::startRotation(int x, int y, int theRotationPointType,
                                   const gp_Pnt& theSelectedPoint)
 {
   if (!activeView().IsNull()) {
-    switch(theRotationPointType) {
-    case XGUI::GRAVITY:
-      activeView()->StartRotation(x, y, 0.45);
-      break;
-    case XGUI::SELECTED:
-      sx = x;
-      sy = y;
-
-      double X, Y;
-      activeView()->Size(X, Y);
-      rx = Standard_Real(activeView()->Convert(X));
-      ry = Standard_Real(activeView()->Convert(Y));
-
-      activeView()->Rotate(0., 0., 0., theSelectedPoint.X(), theSelectedPoint.Y(),
-                           theSelectedPoint.Z(),
-                           Standard_True);
-
-      Quantity_Ratio zRotationThreshold;
-      zRotation = Standard_False;
-      zRotationThreshold = 0.45;
-      if (zRotationThreshold > 0.) {
-        Standard_Real dx = Abs(sx - rx / 2.);
-        Standard_Real dy = Abs(sy - ry / 2.);
-        Standard_Real dd = zRotationThreshold * (rx + ry) / 2.;
-        if (dx > dd || dy > dd)
-          zRotation = Standard_True;
-      }
-      break;
-    default:
-      break;
+    switch (theRotationPointType) {
+      case XGUI::GRAVITY:
+        activeView()->StartRotation(x, y, 0.45);
+        break;
+      case XGUI::SELECTED:
+        sx = x;
+        sy = y;
+
+        double X, Y;
+        activeView()->Size(X, Y);
+        rx = Standard_Real(activeView()->Convert(X));
+        ry = Standard_Real(activeView()->Convert(Y));
+
+        activeView()->Rotate(0., 0., 0., theSelectedPoint.X(), theSelectedPoint.Y(),
+                             theSelectedPoint.Z(),
+                             Standard_True);
+
+        Quantity_Ratio zRotationThreshold;
+        zRotation = Standard_False;
+        zRotationThreshold = 0.45;
+        if (zRotationThreshold > 0.) {
+          Standard_Real dx = Abs(sx - rx / 2.);
+          Standard_Real dy = Abs(sy - ry / 2.);
+          Standard_Real dd = zRotationThreshold * (rx + ry) / 2.;
+          if (dx > dd || dy > dd)
+            zRotation = Standard_True;
+        }
+        break;
+      default:
+        break;
     }
     activeView()->DepthFitAll();
   }
@@ -619,28 +390,28 @@ void XGUI_ViewPort::startRotation(int x, int y, int theRotationPointType,
 void XGUI_ViewPort::rotate(int x, int y, int theRotationPointType, const gp_Pnt& theSelectedPoint)
 {
   if (!activeView().IsNull()) {
-    switch(theRotationPointType) {
-    case XGUI::GRAVITY:
-      activeView()->Rotation(x, y);
-      break;
-    case XGUI::SELECTED:
-      double dx, dy, dz;
-      if (zRotation) {
-        dz = atan2(Standard_Real(x) - rx / 2., ry / 2. - Standard_Real(y))
-            - atan2(sx - rx / 2., ry / 2. - sy);
-        dx = dy = 0.;
-      } else {
-        dx = (Standard_Real(x) - sx) * M_PI / rx;
-        dy = (sy - Standard_Real(y)) * M_PI / ry;
-        dz = 0.;
-      }
-
-      activeView()->Rotate(dx, dy, dz, theSelectedPoint.X(), theSelectedPoint.Y(),
-                           theSelectedPoint.Z(),
-                           Standard_False);
-      break;
-    default:
-      break;
+    switch (theRotationPointType) {
+      case XGUI::GRAVITY:
+        activeView()->Rotation(x, y);
+        break;
+      case XGUI::SELECTED:
+        double dx, dy, dz;
+        if (zRotation) {
+          dz = atan2(Standard_Real(x) - rx / 2., ry / 2. - Standard_Real(y))
+              - atan2(sx - rx / 2., ry / 2. - sy);
+          dx = dy = 0.;
+        } else {
+          dx = (Standard_Real(x) - sx) * M_PI / rx;
+          dy = (sy - Standard_Real(y)) * M_PI / ry;
+          dz = 0.;
+        }
+
+        activeView()->Rotate(dx, dy, dz, theSelectedPoint.X(), theSelectedPoint.Y(),
+                             theSelectedPoint.Z(),
+                             Standard_False);
+        break;
+      default:
+        break;
     }
     emit vpTransformed();
   }
@@ -719,7 +490,7 @@ void XGUI_ViewPort::zoom(int x0, int y0, int x, int y)
 /*!
  Sets the background data
  */
-void XGUI_ViewPort::setBackground(const XGUI_ViewBackground& bgData)
+void XGUI_ViewPort::setBackground(const Qtx::BackgroundData& bgData)
 {
   if (bgData.isValid()) {
     myBackground = bgData;
@@ -730,14 +501,57 @@ void XGUI_ViewPort::setBackground(const XGUI_ViewBackground& bgData)
 
 void XGUI_ViewPort::fitAll(bool theKeepScale, bool theWithZ, bool theUpd)
 {
-  if ( activeView().IsNull() )
+  if (activeView().IsNull())
     return;
 
-  if ( theKeepScale )
+  if (theKeepScale)
     myScale = activeView()->Scale();
 
   Standard_Real aMargin = 0.01;
-  activeView()->FitAll( aMargin, theWithZ, theUpd );
+  activeView()->FitAll(aMargin, theWithZ, theUpd);
   activeView()->SetZSize(0.);
-  emit vpTransformed( );
+  emit vpTransformed();
+}
+
+void XGUI_ViewPort::syncronizeWith(const XGUI_ViewPort* ref)
+{
+  Handle(V3d_View) refView = ref->getView();
+  Handle(V3d_View) tgtView = getView();
+
+  /*  The following params are copied:
+   - view type( ortho/persp )
+   - position of view point
+   - orientation of high point
+   - position of the eye
+   - projection vector
+   - view center ( 2D )
+   - view twist
+   - view scale
+   */
+
+  /* we'll update after setting all params */
+  tgtView->SetImmediateUpdate( Standard_False);
+
+  /* perspective */
+  if (refView->Type() == V3d_PERSPECTIVE)
+    tgtView->SetFocale(refView->Focale());
+
+  /* copy params */
+  Standard_Real x, y, z;
+  refView->At(x, y, z);
+  tgtView->SetAt(x, y, z);
+  refView->Up(x, y, z);
+  tgtView->SetUp(x, y, z);
+  refView->Eye(x, y, z);
+  tgtView->SetEye(x, y, z);
+  refView->Proj(x, y, z);
+  tgtView->SetProj(x, y, z);
+  refView->Center(x, y);
+  tgtView->SetCenter(x, y);
+  tgtView->SetScale(refView->Scale());
+  tgtView->SetTwist(refView->Twist());
+
+  /* update */
+  tgtView->Update();
+  tgtView->SetImmediateUpdate( Standard_True);
 }