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0025149: Samples - add Qt5/QML sample for Android 4.x
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ibs
bugmaster
292
samples/qt/AndroidQt/AndroidQt.cxx
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292
samples/qt/AndroidQt/AndroidQt.cxx
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// Copyright (c) 2014 OPEN CASCADE SAS
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//
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// This file is part of Open CASCADE Technology software library.
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//
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// This library is free software; you can redistribute it and/or modify it under
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// the terms of the GNU Lesser General Public License version 2.1 as published
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// by the Free Software Foundation, with special exception defined in the file
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// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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// distribution for complete text of the license and disclaimer of any warranty.
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//
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// Alternatively, this file may be used under the terms of Open CASCADE
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// commercial license or contractual agreement.
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#include <AndroidQt_Window.h>
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#include <AndroidQt.h>
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#include <AndroidQt_UserInteractionParameters.h>
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#include <AIS_Shape.hxx>
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#include <BRepTools.hxx>
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#include <BRep_Builder.hxx>
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#include <OpenGl_GraphicDriver.hxx>
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#include <Quantity_Color.hxx>
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#include <Standard_ErrorHandler.hxx>
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#include <TopoDS.hxx>
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#include <TopoDS_Face.hxx>
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#include <TopoDS_Shape.hxx>
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#include <UnitsAPI.hxx>
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#include <EGL/egl.h>
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#include <QFileInfo>
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// =======================================================================
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// function : AndroidQt
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// purpose :
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// =======================================================================
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AndroidQt::AndroidQt()
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: myFitAllAction (false)
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{
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connect (this, SIGNAL(windowChanged(QQuickWindow*)), this, SLOT(handleWindowChanged(QQuickWindow*)));
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// set shaders location variable
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QByteArray aDataRoot = "/data/data/org.qtproject.example.AndroidQt/files/opencascade/shared";
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qputenv ("CSF_ShadersDirectory", aDataRoot + "/Shaders");
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}
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// =======================================================================
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// function : ReadShapeFromFile
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// purpose :
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// =======================================================================
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bool AndroidQt::ReadShapeFromFile (QString theFilePath)
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{
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QUrl aFileUrl (theFilePath);
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QString aFilePath = theFilePath;
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if (aFileUrl.isLocalFile())
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{
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aFilePath = QUrl (theFilePath).toLocalFile();
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}
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if (!QFile (aFilePath).exists())
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{
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return false;
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}
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TopoDS_Shape aShape;
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BRep_Builder aBuildTool;
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try
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{
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OCC_CATCH_SIGNALS
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if (!BRepTools::Read (aShape, aFilePath.toStdString().c_str(), aBuildTool))
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{
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return false;
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}
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if (!myContext.IsNull())
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{
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myContext->EraseAll (Standard_False);
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Handle(AIS_Shape) aShapePrs = new AIS_Shape (aShape);
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aShapePrs->SetColor (Quantity_Color(1.0, 0.73, 0.2, Quantity_TOC_RGB));
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myContext->Display (aShapePrs, Standard_False);
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myContext->SetDisplayMode (aShapePrs, AIS_Shaded, Standard_False);
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}
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myMutex.lock();
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myFitAllAction = true;
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myMutex.unlock();
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if (window())
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{
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window()->update();
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}
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}
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catch (Standard_Failure)
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{
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return false;
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}
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return true;
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}
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// =======================================================================
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// function : InitTouch
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// purpose :
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// =======================================================================
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void AndroidQt::InitTouch (const double theX,
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const double theY)
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{
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myMutex.lock();
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myTouchPoint.SetStarts (theX, theY);
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myMutex.unlock();
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}
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// =======================================================================
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// function : UpdateTouch
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// purpose :
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// =======================================================================
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void AndroidQt::UpdateTouch (const double theX,
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const double theY)
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{
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myMutex.lock();
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myTouchPoint.SetEnds (theX, theY);
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myMutex.unlock();
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if (window())
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window()->update();
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}
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// =======================================================================
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// function : handleWindowChanged
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// purpose :
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// =======================================================================
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void AndroidQt::handleWindowChanged (QQuickWindow* theWin)
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{
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if (theWin == NULL)
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{
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return;
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}
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connect(theWin, SIGNAL(beforeSynchronizing()), this, SLOT(sync()), Qt::DirectConnection);
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theWin->setClearBeforeRendering (false);
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}
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// =======================================================================
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// function : sync
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// purpose :
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// =======================================================================
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void AndroidQt::sync()
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{
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myViewportSize = window()->size() * window()->devicePixelRatio();
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if (myViewer.IsNull())
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{
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initViewer();
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connect (window(), SIGNAL(beforeRendering()), this, SLOT(paint()), Qt::DirectConnection);
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}
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else
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{
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Handle(OpenGl_GraphicDriver) aDriver = Handle(OpenGl_GraphicDriver)::DownCast (myViewer->Driver());
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if (aDriver->getRawGlContext() != eglGetCurrentContext())
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{
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initViewer();
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}
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else
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{
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Handle(AndroidQt_Window) aWindow = Handle(AndroidQt_Window)::DownCast (myView->Window());
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aWindow->SetSize (myViewportSize.width(), myViewportSize.height());
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//myView->MustBeResized(); // can be used instead of SetWindow() when EGLsurface has not been changed
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EGLContext anEglContext = eglGetCurrentContext();
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myView->SetWindow (aWindow, (Aspect_RenderingContext )anEglContext, NULL, NULL);
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}
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}
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}
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// =======================================================================
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// function : paint
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// purpose :
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// =======================================================================
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void AndroidQt::paint()
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{
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myMutex.lock();
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if (Abs(myTouchPoint.DevX()) + Abs(myTouchPoint.DevY()) > 1)
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{
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myView->StartRotation (myTouchPoint.X().first, myTouchPoint.Y().first);
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myView->Rotation (myTouchPoint.X().second, myTouchPoint.Y().second);
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myTouchPoint.ClearDev();
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}
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if (myFitAllAction)
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{
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myView->FitAll();
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myFitAllAction = false;
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}
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myMutex.unlock();
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myView->Redraw();
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}
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// =======================================================================
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// function : initViewer
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// purpose :
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// =======================================================================
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bool AndroidQt::initViewer()
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{
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EGLint aCfgId = 0;
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int aWidth = 0, aHeight = 0;
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EGLDisplay anEglDisplay = eglGetCurrentDisplay();
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EGLContext anEglContext = eglGetCurrentContext();
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EGLSurface anEglSurf = eglGetCurrentSurface (EGL_DRAW);
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if (anEglDisplay == EGL_NO_DISPLAY
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|| anEglContext == EGL_NO_CONTEXT
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|| anEglSurf == EGL_NO_SURFACE)
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{
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release();
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return false;
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}
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eglQuerySurface (anEglDisplay, anEglSurf, EGL_WIDTH, &aWidth);
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eglQuerySurface (anEglDisplay, anEglSurf, EGL_HEIGHT, &aHeight);
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eglQuerySurface (anEglDisplay, anEglSurf, EGL_CONFIG_ID, &aCfgId);
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const EGLint aConfigAttribs[] = { EGL_CONFIG_ID, aCfgId, EGL_NONE };
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EGLint aNbConfigs = 0;
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void* anEglConfig = NULL;
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if (eglChooseConfig (anEglDisplay, aConfigAttribs, &anEglConfig, 1, &aNbConfigs) != EGL_TRUE)
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{
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release();
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return false;
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}
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if (!myViewer.IsNull())
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{
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Handle(OpenGl_GraphicDriver) aDriver = Handle(OpenGl_GraphicDriver)::DownCast (myViewer->Driver());
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Handle(AndroidQt_Window) aWindow = Handle(AndroidQt_Window)::DownCast (myView->Window());
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if (!aDriver->InitEglContext (anEglDisplay, anEglContext, anEglConfig))
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{
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release();
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return false;
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}
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aWindow->SetSize (aWidth, aHeight);
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myView->SetWindow (aWindow, (Aspect_RenderingContext )anEglContext, NULL, NULL);
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}
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Handle(OpenGl_GraphicDriver) aDriver = new OpenGl_GraphicDriver (NULL, Standard_False);
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aDriver->ChangeOptions().buffersNoSwap = Standard_True;
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//aDriver->ChangeOptions().glslWarnings = Standard_True; // for GLSL shaders debug
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if (!aDriver->InitEglContext (anEglDisplay, anEglContext, anEglConfig))
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{
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release();
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return false;
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}
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// create viewer
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myViewer = new V3d_Viewer (aDriver, TCollection_ExtendedString("Viewer").ToExtString(), "", 1000.0,
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V3d_XposYnegZpos, AndroidQt_UserInteractionParameters::BgColor.Name(), V3d_ZBUFFER, V3d_GOURAUD, V3d_WAIT,
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Standard_True, Standard_False);
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myViewer->SetDefaultLights();
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myViewer->SetLightOn();
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// create AIS context
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myContext = new AIS_InteractiveContext (myViewer);
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myContext->SetDisplayMode (AIS_Shaded);
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Handle(AndroidQt_Window) aWindow = new AndroidQt_Window (aWidth, aHeight);
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myView = myViewer->CreateView();
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myView->SetWindow (aWindow, (Aspect_RenderingContext )anEglContext, NULL, NULL);
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myView->TriedronDisplay (Aspect_TOTP_RIGHT_LOWER, Quantity_NOC_WHITE, 0.08, V3d_ZBUFFER);
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return true;
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}
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// =======================================================================
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// function : release
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// purpose :
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// =======================================================================
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void AndroidQt::release()
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{
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myContext.Nullify();
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myView.Nullify();
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myViewer.Nullify();
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}
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