Mercurial > hg > orthanc-stone

comparison Samples/WebAssembly/BasicMPR.cpp @ 823:467d58a59718

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wheel
author Sebastien Jodogne <s.jodogne@gmail.com>
date Wed, 29 May 2019 14:44:37 +0200
parents 76e8224bc300
children 15d493101c1e
comparison
equal deleted inserted replaced
822:76e8224bc300 823:467d58a59718
358 if (source_.get() != NULL && 358 if (source_.get() != NULL &&
359 currentPlane_ < planes_.size()) 359 currentPlane_ < planes_.size())
360 { 360 {
361 source_->Update(planes_[currentPlane_]); 361 source_->Update(planes_[currentPlane_]);
362 viewport_.Refresh(); 362 viewport_.Refresh();
363 }
364 }
365
366 void Scroll(int delta)
367 {
368 if (!planes_.empty())
369 {
370 int tmp = static_cast<int>(currentPlane_) + delta;
371 unsigned int next;
372
373 if (tmp < 0)
374 {
375 next = 0;
376 }
377 else if (tmp >= static_cast<int>(planes_.size()))
378 {
379 next = planes_.size() - 1;
380 }
381 else
382 {
383 next = static_cast<size_t>(tmp);
384 }
385
386 if (next != currentPlane_)
387 {
388 currentPlane_ = next;
389 Refresh();
390 }
363 } 391 }
364 } 392 }
365 }; 393 };
366 394
367 395
844 return false; 872 return false;
845 } 873 }
846 } 874 }
847 875
848 876
877 static bool ctrlDown_ = false;
878
879
880 EM_BOOL OnMouseWheel(int eventType,
881 const EmscriptenWheelEvent *wheelEvent,
882 void *userData)
883 {
884 try
885 {
886 if (userData != NULL)
887 {
888 int delta = 0;
889
890 if (wheelEvent->deltaY < 0)
891 {
892 delta = -1;
893 }
894
895 if (wheelEvent->deltaY > 0)
896 {
897 delta = 1;
898 }
899
900 if (ctrlDown_)
901 {
902 delta *= 10;
903 }
904
905 reinterpret_cast<OrthancStone::VolumeSlicerViewport*>(userData)->Scroll(delta);
906 }
907 }
908 catch (Orthanc::OrthancException& e)
909 {
910 LOG(ERROR) << "Exception in the wheel event: " << e.What();
911 }
912
913 return true;
914 }
915
916
917 EM_BOOL OnKey(int eventType,
918 const EmscriptenKeyboardEvent *keyEvent,
919 void *userData)
920 {
921 ctrlDown_ = keyEvent->ctrlKey;
922 return false;
923 }
924
925
926
927
849 extern "C" 928 extern "C"
850 { 929 {
851 int main(int argc, char const *argv[]) 930 int main(int argc, char const *argv[])
852 { 931 {
853 OrthancStone::StoneInitialize(); 932 OrthancStone::StoneInitialize();
874 viewport3_.reset(new OrthancStone::VolumeSlicerViewport(broker_, "mycanvas3", OrthancStone::VolumeProjection_Sagittal)); 953 viewport3_.reset(new OrthancStone::VolumeSlicerViewport(broker_, "mycanvas3", OrthancStone::VolumeProjection_Sagittal));
875 viewport3_->SetSlicer(0, loader_, *loader_, new OrthancStone::GrayscaleStyleConfigurator); 954 viewport3_->SetSlicer(0, loader_, *loader_, new OrthancStone::GrayscaleStyleConfigurator);
876 viewport3_->UpdateSize(); 955 viewport3_->UpdateSize();
877 956
878 emscripten_set_resize_callback("#window", NULL, false, OnWindowResize); 957 emscripten_set_resize_callback("#window", NULL, false, OnWindowResize);
958
959 emscripten_set_wheel_callback("mycanvas1", viewport1_.get(), false, OnMouseWheel);
960 emscripten_set_wheel_callback("mycanvas2", viewport2_.get(), false, OnMouseWheel);
961 emscripten_set_wheel_callback("mycanvas3", viewport3_.get(), false, OnMouseWheel);
962
963 emscripten_set_keydown_callback("#window", NULL, false, OnKey);
964 emscripten_set_keyup_callback("#window", NULL, false, OnKey);
879 965
880 emscripten_request_animation_frame_loop(OnAnimationFrame, NULL); 966 emscripten_request_animation_frame_loop(OnAnimationFrame, NULL);
881 967
882 oracle_.Start(); 968 oracle_.Start();
883 loader_->LoadSeries("a04ecf01-79b2fc33-58239f7e-ad9db983-28e81afa"); 969 loader_->LoadSeries("a04ecf01-79b2fc33-58239f7e-ad9db983-28e81afa");