appli/examples/example_Test_DoubleClick.cxx

   1 #include <vtkRenderWindow.h>
   2 #include <vtkRenderWindowInteractor.h>
   3 #include <vtkRenderer.h>
   4 #include <vtkSphereSource.h>
   5 #include <vtkPolyDataMapper.h>
   6 #include <vtkActor.h>
   7 #include <vtkSmartPointer.h>
   8 #include <vtkPointPicker.h>
   9 #include <vtkCamera.h>
  10 #include <vtkInteractorStyleTrackballCamera.h>
  11 #include <vtkObjectFactory.h>
  12
  13 #ifdef WIN32
  14 #include <windows.h>
  15 #else
  16 #endif
  17
  18 // Define interaction style
  19 class MouseInteractorStyleDoubleClick : public vtkInteractorStyleTrackballCamera
  20 {
  21 public:
  22
  23         static MouseInteractorStyleDoubleClick* New();
  24         vtkTypeMacro(MouseInteractorStyleDoubleClick, vtkInteractorStyleTrackballCamera);
  25
  26         MouseInteractorStyleDoubleClick() : NumberOfClicks(0), ResetPixelDistance(5), DoubleClickTolerance(1000)
  27         {
  28                 this->PreviousPosition[0] = 0;
  29                 this->PreviousPosition[1] = 0;
  30 #ifdef WIN32
  31                 this->DoubleClickTolerance = GetDoubleClickTime();
  32 #else
  33                 // I dont have any idea if this has an equivalent for linux
  34                 //this->DoubleClickTolerance = GetDoubleClickTime();
  35 #endif
  36         }
  37
  38         virtual void OnLeftButtonDown()
  39         {
  40                 //std::cout << "Pressed left mouse button." << std::endl;
  41                 this->NumberOfClicks++;
  42
  43                 if (this->NumberOfClicks > 1)
  44                 {
  45                         this->LastClickTime = this->CurrentClickTime;
  46                         this->CurrentClickTime = time(0);
  47                 } else
  48                 {
  49                         this->CurrentClickTime = time(0);
  50                 }
  51
  52                 //std::cout << "NumberOfClicks = " << this->NumberOfClicks << std::endl;
  53                 int pickPosition[2];
  54                 this->GetInteractor()->GetEventPosition(pickPosition);
  55
  56                 int xdist = pickPosition[0] - this->PreviousPosition[0];
  57                 int ydist = pickPosition[1] - this->PreviousPosition[1];
  58
  59                 this->PreviousPosition[0] = pickPosition[0];
  60                 this->PreviousPosition[1] = pickPosition[1];
  61
  62                 int moveDistance = (int)sqrt((double)(xdist*xdist + ydist*ydist));
  63
  64                 // Reset numClicks - If mouse moved further than resetPixelDistance
  65                 if (moveDistance > this->ResetPixelDistance)
  66                 {
  67                         this->NumberOfClicks = 1;
  68                 }
  69
  70
  71                 if (this->NumberOfClicks == 2)
  72                 {
  73                         double  seconds = difftime(this->CurrentClickTime, this->LastClickTime);
  74                         if (seconds * 1000 <= this->DoubleClickTolerance)
  75                         {
  76                                 std::cout << "Double clicked. with " << seconds << " of diference" << std::endl;
  77                                 this->NumberOfClicks = 0;
  78                         } else
  79                         {
  80                                 std::cout << "Too slow to be considered as a double click" << std::endl;
  81                                 this->NumberOfClicks = 1;
  82                         }
  83
  84                 }
  85                 // forward events
  86                 vtkInteractorStyleTrackballCamera::OnLeftButtonDown();
  87         }
  88
  89 private:
  90         unsigned int NumberOfClicks;
  91         int PreviousPosition[2];
  92         int ResetPixelDistance;
  93         double DoubleClickTolerance; // time in miliseconds
  94         time_t LastClickTime;
  95         time_t CurrentClickTime;
  96 };
  97 vtkStandardNewMacro(MouseInteractorStyleDoubleClick);
  98
  99 int main(int, char *[])
 100 {
 101         vtkSmartPointer<vtkSphereSource> sphereSource =
 102                 vtkSmartPointer<vtkSphereSource>::New();
 103         sphereSource->SetCenter(0.0, 0.0, 0.0);
 104         sphereSource->SetRadius(5.0);
 105         sphereSource->Update();
 106
 107         vtkSmartPointer<vtkPolyDataMapper> mapper =
 108                 vtkSmartPointer<vtkPolyDataMapper>::New();
 109         mapper->SetInputConnection(sphereSource->GetOutputPort());
 110
 111         vtkSmartPointer<vtkActor> actor =
 112                 vtkSmartPointer<vtkActor>::New();
 113         actor->SetMapper(mapper);
 114
 115         vtkSmartPointer<vtkRenderer> renderer =
 116                 vtkSmartPointer<vtkRenderer>::New();
 117         renderer->SetBackground(1, 1, 1); // Background color white
 118         renderer->AddActor(actor);
 119
 120         vtkSmartPointer<vtkRenderWindow> renderWindow =
 121                 vtkSmartPointer<vtkRenderWindow>::New();
 122         renderWindow->AddRenderer(renderer);
 123
 124         vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor =
 125                 vtkSmartPointer<vtkRenderWindowInteractor>::New();
 126         renderWindowInteractor->SetRenderWindow(renderWindow);
 127
 128         vtkSmartPointer<MouseInteractorStyleDoubleClick> style =
 129                 vtkSmartPointer<MouseInteractorStyleDoubleClick>::New();
 130         renderWindowInteractor->SetInteractorStyle(style);
 131
 132         renderWindowInteractor->Initialize();
 133         renderWindowInteractor->Start();
 134
 135         return EXIT_SUCCESS;
 136 }