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refs #80 - Sketch base GUI: create/draw point, circle and arc
[modules/shaper.git] / src / XGUI / XGUI_ViewPort.cpp
index 2202683d58d01ceac9b7d94707e96723984f173d..6ec2c0c65f51c35f6c852dd8e76721ca28ba4bb2 100644 (file)
@@ -1,27 +1,18 @@
-#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>
@@ -37,6 +28,7 @@ static int sx = 0;
 static int sy = 0;
 static Standard_Boolean zRotation = Standard_False;
 
+
 /*!
  Create native view window for CasCade view [ static ]
  */
@@ -52,208 +44,19 @@ 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,
+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 +65,7 @@ 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 +76,6 @@ 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 +91,8 @@ 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) */
@@ -474,7 +276,7 @@ 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 +292,18 @@ 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 +322,8 @@ 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;
@@ -741,3 +514,41 @@ void XGUI_ViewPort::fitAll(bool theKeepScale, bool theWithZ, bool theUpd)
   activeView()->SetZSize(0.);
   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 );
+}