C++ GlMainWidget::screenToViewport方法代码示例

bool PixelOrientedViewNavigator::eventFilter(QObject *widget, QEvent *e) {

    if(e->type() != QEvent::MouseButtonDblClick && e->type() != QEvent::MouseMove)
        return false;

    GlMainWidget *glWidget = (GlMainWidget *) widget;

    if (!glWidget->hasMouseTracking()) {
        glWidget->setMouseTracking(true);
    }

    if (!pixelView->smallMultiplesViewSet() && !pixelView->interactorsEnabled()) {
        pixelView->toggleInteractors(true);
    }

    if (pixelView->getOverviews().size() == 0) {
        return false;
    }

    if (e->type() == QEvent::MouseMove && pixelView->smallMultiplesViewSet()) {
        QMouseEvent *me = (QMouseEvent *) e;
        int x = glWidget->width() - me->x();
        int y = me->y();
        Coord screenCoords(x, y, 0);
        Coord sceneCoords = glWidget->getScene()->getGraphCamera().viewportTo3DWorld(glWidget->screenToViewport(screenCoords));
        PixelOrientedOverview *overviewUnderPointer = getOverviewUnderPointer(sceneCoords);

        if (overviewUnderPointer != NULL && overviewUnderPointer != selectedOverview) {
            selectedOverview = overviewUnderPointer;
        }

        return true;
    }
    else if (e->type() == QEvent::MouseButtonDblClick) {
        if (selectedOverview != NULL && !selectedOverview->overviewGenerated()) {
            pixelView->generatePixelOverview(selectedOverview, glWidget);
            glWidget->draw();
        }
        else if (selectedOverview != NULL && pixelView->smallMultiplesViewSet()) {
            QtGlSceneZoomAndPanAnimator zoomAndPanAnimator(glWidget, selectedOverview->getBoundingBox());
            zoomAndPanAnimator.animateZoomAndPan();
            pixelView->switchFromSmallMultiplesToDetailView(selectedOverview);
            selectedOverview = NULL;
        }
        else if (!pixelView->smallMultiplesViewSet() && pixelView->getOverviews().size() > 1) {
            pixelView->switchFromDetailViewToSmallMultiples();
            QtGlSceneZoomAndPanAnimator zoomAndPanAnimator(glWidget, pixelView->getSmallMultiplesViewBoundingBox());
            zoomAndPanAnimator.animateZoomAndPan();
            pixelView->centerView();
        }

        return true;
    }

    return false;
}

bool FishEyeInteractorComponent::eventFilter(QObject *obj, QEvent *e) {

  GlMainWidget *glWidget = (GlMainWidget*)obj;
  Camera *camera=&glWidget->getScene()->getGraphCamera();

  activateFishEye = false;

  if (e->type() == QEvent::MouseMove ||
      e->type() == QEvent::MouseButtonPress ||
      e->type() == QEvent::MouseButtonRelease) {
    activateFishEye = true;
    QMouseEvent *me = (QMouseEvent *) e;
    float x = glWidget->width() - me->x();
    float y = me->y();
    Coord screenCoords(x, y, 0);
    fisheyeCenter = camera->viewportTo3DWorld(glWidget->screenToViewport(screenCoords));
    glWidget->redraw();
    return true;
  }
  else if (e->type() == QEvent::Wheel) {
    activateFishEye = true;
    QWheelEvent *wheelEvent = (QWheelEvent *) e;
    int numDegrees = wheelEvent->delta() / 8;
    int numSteps = numDegrees / 15;

    if (wheelEvent->orientation() == Qt::Vertical && (wheelEvent->modifiers() == Qt::ControlModifier)) {
      activateFishEye = true;
      configWidget->setFishEyeRadius(configWidget->getFishEyeRadius() + configWidget->getFishEyeRadiusIncrementStep() * numSteps);
      glWidget->redraw();
      return true;
    }
    else if (wheelEvent->orientation() == Qt::Vertical && (wheelEvent->modifiers() == Qt::ShiftModifier)) {
      activateFishEye = true;
      float newHeight = configWidget->getFishEyeHeight() + configWidget->getFishEyeHeightIncrementStep() * numSteps;

      if (newHeight < 0) {
        newHeight = 0;
      }

      configWidget->setFishEyeHeight(newHeight);
      glWidget->redraw();
      return true;
    }

    return false;
  }

  return false;

}

//========================================================================================
bool MouseSelectionEditor::eventFilter(QObject *widget, QEvent *e) {
  QMouseEvent *qMouseEv = static_cast<QMouseEvent *>(e);
  GlMainWidget *glMainWidget = static_cast<GlMainWidget *>(widget);

  if (e->type() == QEvent::MouseButtonPress) {

    initProxies(glMainWidget);
    computeFFD(glMainWidget);

    int H;
    H = glMainWidget->height();
    editCenter = centerRect.getCenter();
    editCenter[2] = 0;
    editCenter[1] = glMainWidget->screenToViewport(H) - editCenter[1];
    // editCenter[0] = W - editCenter[0];
    editPosition[0] = qMouseEv->x();
    editPosition[1] = qMouseEv->y();
    editPosition[2] = 0;
    editLayoutCenter = _layoutCenter;

    vector<SelectedEntity> select;

    switch (qMouseEv->buttons()) {
    case Qt::LeftButton: {
      // first ensure that something is selected
      bool hasSelection = _selection->hasNonDefaultValuatedNodes(_graph) ||
                          _selection->hasNonDefaultValuatedEdges(_graph);

      if (!hasSelection ||
          (!glMainWidget->pickGlEntities(int(editPosition[0]) - 3, int(editPosition[1]) - 3, 6, 6,
                                         select, layer))) {
        // event occurs outside the selection rectangle
        // so from now we delegate the job to a MouseSelector object
        // which should intercept the event
        operation = NONE;
        glMainWidget->setCursor(QCursor(Qt::CrossCursor));

        return false;
      }

      glMainWidget->setCursor(QCursor(Qt::PointingHandCursor));

      int shapeId = -1;
      bool advShape = false;

      for (unsigned int i = 0; (i < select.size()) && (shapeId == -1); ++i) {
        for (int j = 0; j < 8; ++j) {
          if (select[i].getSimpleEntity() == &_controls[j]) {
            shapeId = i;
          }
        }

        for (int j = 0; j < 6; ++j) {
          if (select[i].getSimpleEntity() == &_advControls[j]) {
            advShape = true;
            shapeId = i;
          }
        }
      }

      if (shapeId != -1) {
        if (!advShape) {
          static_cast<GlCircle *>(select[shapeId].getSimpleEntity())
              ->setFillColor(Color(40, 255, 40, 200));
          static_cast<GlCircle *>(select[shapeId].getSimpleEntity())
              ->setOutlineColor(Color(20, 128, 20, 200));
        }

        getOperation(select[shapeId].getSimpleEntity());

        switch (operation) {
        case ALIGN_TOP:
        case ALIGN_BOTTOM:
        case ALIGN_LEFT:
        case ALIGN_RIGHT:
        case ALIGN_VERTICALLY:
        case ALIGN_HORIZONTALLY:
          mAlign(operation, glMainWidget);
          return true;

        case ROTATE_Z:
        case ROTATE_XY:
        case NONE:
        case STRETCH_X:
        case STRETCH_Y:
        case STRETCH_XY:
        case TRANSLATE:
        default:
          break;
        }
      } else {
        if (qMouseEv->modifiers() &
#if defined(__APPLE__)
            Qt::AltModifier
#else
            Qt::ControlModifier
#endif
        ) {
          operation = ROTATE_XY;
//.........这里部分代码省略.........

bool MouseEdgeBuilder::eventFilter(QObject *widget, QEvent *e) {

    GlMainWidget *glMainWidget = static_cast<GlMainWidget *>(widget);

    if (e->type() == QEvent::MouseButtonPress) {
        QMouseEvent * qMouseEv = static_cast<QMouseEvent *>(e);

        SelectedEntity selectedEntity;
        GlGraphInputData *inputData=glMainWidget->getScene()->getGlGraphComposite()->getInputData();
        Graph * _graph = inputData->getGraph();

        LayoutProperty* mLayout = inputData->getElementLayout();

        if (qMouseEv->buttons()==Qt::LeftButton) {
            if (!_started) {
                bool result=glMainWidget->pickNodesEdges(qMouseEv->x(), qMouseEv->y(), selectedEntity);

                if (result && (selectedEntity.getEntityType() == SelectedEntity::NODE_SELECTED)) {
                    _started=true;
                    initObserver(_graph);
                    _source=node(selectedEntity.getComplexEntityId());
                    _curPos=_startPos=mLayout->getNodeValue(_source);
                    return true;
                }

                return false;
            }
            else {
                bool result = glMainWidget->pickNodesEdges(qMouseEv->x(),qMouseEv->y(),selectedEntity);

                if (result && (selectedEntity.getEntityType() == SelectedEntity::NODE_SELECTED)) {
                    Observable::holdObservers();
                    _started=false;
                    clearObserver();
                    // allow to undo
                    _graph->push();
                    addLink(widget,_source,node(selectedEntity.getComplexEntityId()));
                    Observable::unholdObservers();

                }
                else {
                    Coord point(glMainWidget->width() - qMouseEv->x(), qMouseEv->y(), 0);
                    _bends.push_back(glMainWidget->getScene()->getGraphCamera().viewportTo3DWorld(glMainWidget->screenToViewport(point)));
                    glMainWidget->redraw();
                }
            }

            return true;
        }

        if (qMouseEv->buttons()==Qt::MidButton) {
            _bends.clear();
            _started=false;
            _source=node();
            clearObserver();
            glMainWidget->draw();
            return true;
        }
    }

    if  (e->type() == QEvent::MouseMove) {
        QMouseEvent * qMouseEv = static_cast<QMouseEvent *>(e);

        if (!_started) {
            SelectedEntity selectedEntity;
            bool hoveringOverNode = glMainWidget->pickNodesEdges(qMouseEv->x(), qMouseEv->y(), selectedEntity) && selectedEntity.getEntityType() == SelectedEntity::NODE_SELECTED;

            if (!hoveringOverNode) {
                glMainWidget->setCursor(QCursor(Qt::ArrowCursor));
                return false;
            }
            else {
                glMainWidget->setCursor(QCursor(Qt::CrossCursor));
            }
        }
        else {
            SelectedEntity selectedEntity;

            if(glMainWidget->pickNodesEdges(qMouseEv->x(), qMouseEv->y(), selectedEntity) && selectedEntity.getEntityType() == SelectedEntity::NODE_SELECTED) {
                glMainWidget->setCursor(QCursor(Qt::CrossCursor));
            }
            else {
                glMainWidget->setCursor(QCursor(Qt::ArrowCursor));
            }

            Coord point(glMainWidget->width() - qMouseEv->x(), qMouseEv->y(), 0);
            point = glMainWidget->getScene()->getGraphCamera().viewportTo3DWorld(glMainWidget->screenToViewport(point));
            _curPos.set(point[0], point[1], point[2]);
            glMainWidget->redraw();
        }

        return true;
    }

    return false;
}

bool ParallelCoordsAxisBoxPlot::eventFilter(QObject *widget, QEvent *e) {

  GlMainWidget *glWidget = dynamic_cast<GlMainWidget *>(widget);

  if(!glWidget)
    return false;

  initOrUpdateBoxPlots();

  if (e->type() == QEvent::MouseMove) {
    QMouseEvent *me = (QMouseEvent *) e;
    int x = glWidget->width() - me->x();
    int y = me->y();
    Coord screenCoords(x, y, 0.0f);
    Coord sceneCoords(glWidget->getScene()->getLayer("Main")->getCamera().viewportTo3DWorld(glWidget->screenToViewport(screenCoords)));
    selectedAxis = parallelView->getAxisUnderPointer(me->x(), me->y());

    if (selectedAxis != NULL && dynamic_cast<QuantitativeParallelAxis *>(selectedAxis)) {
      if (axisBoxPlotMap.find(static_cast<QuantitativeParallelAxis *>(selectedAxis)) != axisBoxPlotMap.end())
        if (parallelView->getLayoutType() == ParallelCoordinatesDrawing::CIRCULAR) {
          rotateVector(sceneCoords, -(selectedAxis->getRotationAngle()), Z_ROT);
        }

      axisBoxPlotMap[static_cast<QuantitativeParallelAxis *>(selectedAxis)]->setHighlightRangeIfAny(sceneCoords);
    }

    parallelView->refresh();
    return true;
  }

  if (e->type() == QEvent::MouseButtonPress) {
    return false;
  }

  if (e->type() == QEvent::MouseButtonRelease) {
    if (selectedAxis != NULL && dynamic_cast<QuantitativeParallelAxis *>(selectedAxis)) {
      Observable::holdObservers();

      if (axisBoxPlotMap.find(static_cast<QuantitativeParallelAxis *>(selectedAxis)) != axisBoxPlotMap.end())
        parallelView->highlightDataInAxisBoxPlotRange(static_cast<QuantitativeParallelAxis *>(selectedAxis));

      Observable::unholdObservers();
      selectedAxis = NULL;
      parallelView->refresh();
      return true;
    }
  }

  return false;
}

//=====================================================================
bool MouseBoxZoomer::eventFilter(QObject *widget, QEvent *e) {
  GlMainWidget *glw = static_cast<GlMainWidget *>(widget);
  GlGraphInputData *inputData = glw->getScene()->getGlGraphComposite()->getInputData();

  if (e->type() == QEvent::MouseButtonPress) {
    QMouseEvent * qMouseEv = static_cast<QMouseEvent *>(e);

    if (qMouseEv->buttons() == mButton &&
        (kModifier == Qt::NoModifier ||
         qMouseEv->modifiers() & kModifier)) {
      if (!started) {
        x = qMouseEv->x();
        y =  glw->height() - qMouseEv->y();
        w = 0;
        h = 0;
        started = true;
        graph = inputData->getGraph();
      }
      else {
        if (inputData->getGraph() != graph) {
          graph = NULL;
          started = false;
        }
      }

      return true;
    }

    if (qMouseEv->buttons()==Qt::MidButton) {
      started = false;
      glw->redraw();
      return true;
    }

    return false;
  }

  if (e->type() == QEvent::MouseMove) {
    QMouseEvent * qMouseEv = static_cast<QMouseEvent *>(e);

    if ((qMouseEv->buttons() & mButton) &&
        (kModifier == Qt::NoModifier ||
         qMouseEv->modifiers() & kModifier)) {
      if (inputData->getGraph() != graph) {
        graph = NULL;
        started = false;
      }

      if (started) {
        if ((qMouseEv->x() > 0) && (qMouseEv->x() < glw->width()))
          w = qMouseEv->x() - x;

        if ((qMouseEv->y() > 0) && (qMouseEv->y() < glw->height()))
          h = y - (glw->height() - qMouseEv->y());

        glw->redraw();
        return true;
      }
    }
  }

  if (e->type() == QEvent::MouseButtonDblClick) {
    GlBoundingBoxSceneVisitor bbVisitor(inputData);
    glw->getScene()->getLayer("Main")->acceptVisitor(&bbVisitor);
    QtGlSceneZoomAndPanAnimator zoomAnPan(glw, bbVisitor.getBoundingBox());
    zoomAnPan.animateZoomAndPan();
    return true;
  }

  if (e->type() == QEvent::MouseButtonRelease) {

    QMouseEvent * qMouseEv = static_cast<QMouseEvent *>(e);

    if ((qMouseEv->button() == mButton &&
         (kModifier == Qt::NoModifier ||
          qMouseEv->modifiers() & kModifier))) {
      if (inputData->getGraph() != graph) {
        graph = NULL;
        started = false;
      }

      if (started) {
        started = false;

        if(!(w==0 && h==0)) {
          int width = glw->width();
          int height = glw->height();

          Coord bbMin(width-x, height - y+h);
          Coord bbMax(width-(x+w), height - y);

          if (abs(bbMax[0] - bbMin[0]) > 1 && abs(bbMax[1] - bbMin[1]) > 1) {

            BoundingBox sceneBB;
            sceneBB.expand(glw->getScene()->getGraphCamera().viewportTo3DWorld(glw->screenToViewport(bbMin)));
            sceneBB.expand(glw->getScene()->getGraphCamera().viewportTo3DWorld(glw->screenToViewport(bbMax)));

            QtGlSceneZoomAndPanAnimator zoomAnPan(glw, sceneBB);
            zoomAnPan.animateZoomAndPan();
//.........这里部分代码省略.........