15c6c1daeSBarry Smith 25c6c1daeSBarry Smith /* 35c6c1daeSBarry Smith Provides the calling sequences for all the basic PetscDraw routines. 45c6c1daeSBarry Smith */ 5af0996ceSBarry Smith #include <petsc/private/drawimpl.h> /*I "petscdraw.h" I*/ 65c6c1daeSBarry Smith 75c6c1daeSBarry Smith /*@ 85c6c1daeSBarry Smith PetscDrawGetMouseButton - Returns location of mouse and which button was 95c6c1daeSBarry Smith pressed. Waits for button to be pressed. 105c6c1daeSBarry Smith 11*811af0c4SBarry Smith Collective on draw 125c6c1daeSBarry Smith 135c6c1daeSBarry Smith Input Parameter: 145c6c1daeSBarry Smith . draw - the window to be used 155c6c1daeSBarry Smith 165c6c1daeSBarry Smith Output Parameters: 17*811af0c4SBarry Smith + button - one of `PETSC_BUTTON_LEFT`, `PETSC_BUTTON_CENTER`, `PETSC_BUTTON_RIGHT`, `PETSC_BUTTON_WHEEL_UP`, `PETSC_BUTTON_WHEEL_DOWN` 186b867d5aSJose E. Roman . x_user - horizontal user coordinate of location (user may pass in NULL). 196b867d5aSJose E. Roman . y_user - vertical user coordinate of location (user may pass in NULL). 206b867d5aSJose E. Roman . x_phys - horizontal window coordinate (user may pass in NULL). 216b867d5aSJose E. Roman - y_phys - vertical window coordinate (user may pass in NULL). 225c6c1daeSBarry Smith 23*811af0c4SBarry Smith Note: 2495452b02SPatrick Sanan Only processor 0 actually waits for the button to be pressed. 255c6c1daeSBarry Smith 2664f23424SLisandro Dalcin Level: intermediate 27*811af0c4SBarry Smith 28*811af0c4SBarry Smith .seealso: `PetscDraw`, `PetscDrawButton` 295c6c1daeSBarry Smith @*/ 309371c9d4SSatish Balay PetscErrorCode PetscDrawGetMouseButton(PetscDraw draw, PetscDrawButton *button, PetscReal *x_user, PetscReal *y_user, PetscReal *x_phys, PetscReal *y_phys) { 3109440f25SLisandro Dalcin PetscReal bcast[4] = {0, 0, 0, 0}; 325c6c1daeSBarry Smith 335c6c1daeSBarry Smith PetscFunctionBegin; 345c6c1daeSBarry Smith PetscValidHeaderSpecific(draw, PETSC_DRAW_CLASSID, 1); 35e118a51fSLisandro Dalcin PetscValidPointer(button, 2); 36e118a51fSLisandro Dalcin *button = PETSC_BUTTON_NONE; 3764f23424SLisandro Dalcin if (!draw->ops->getmousebutton) PetscFunctionReturn(0); 38e118a51fSLisandro Dalcin 39dbbe0bcdSBarry Smith PetscUseTypeMethod(draw, getmousebutton, button, x_user, y_user, x_phys, y_phys); 40e118a51fSLisandro Dalcin 419566063dSJacob Faibussowitsch PetscCallMPI(MPI_Bcast((PetscEnum *)button, 1, MPIU_ENUM, 0, PetscObjectComm((PetscObject)draw))); 425c6c1daeSBarry Smith if (x_user) bcast[0] = *x_user; 435c6c1daeSBarry Smith if (y_user) bcast[1] = *y_user; 445c6c1daeSBarry Smith if (x_phys) bcast[2] = *x_phys; 455c6c1daeSBarry Smith if (y_phys) bcast[3] = *y_phys; 469566063dSJacob Faibussowitsch PetscCallMPI(MPI_Bcast(bcast, 4, MPIU_REAL, 0, PetscObjectComm((PetscObject)draw))); 475c6c1daeSBarry Smith if (x_user) *x_user = bcast[0]; 485c6c1daeSBarry Smith if (y_user) *y_user = bcast[1]; 495c6c1daeSBarry Smith if (x_phys) *x_phys = bcast[2]; 505c6c1daeSBarry Smith if (y_phys) *y_phys = bcast[3]; 515c6c1daeSBarry Smith PetscFunctionReturn(0); 525c6c1daeSBarry Smith } 53