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 115c6c1daeSBarry Smith Collective over PetscDraw 125c6c1daeSBarry Smith 135c6c1daeSBarry Smith Input Parameter: 145c6c1daeSBarry Smith . draw - the window to be used 155c6c1daeSBarry Smith 165c6c1daeSBarry Smith Output Parameters: 179f80f0efSLisandro Dalcin + 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 2395452b02SPatrick Sanan Notes: 2495452b02SPatrick Sanan Only processor 0 actually waits for the button to be pressed. 255c6c1daeSBarry Smith 2664f23424SLisandro Dalcin Level: intermediate 275c6c1daeSBarry Smith @*/ 28*9371c9d4SSatish Balay PetscErrorCode PetscDrawGetMouseButton(PetscDraw draw, PetscDrawButton *button, PetscReal *x_user, PetscReal *y_user, PetscReal *x_phys, PetscReal *y_phys) { 2909440f25SLisandro Dalcin PetscReal bcast[4] = {0, 0, 0, 0}; 305c6c1daeSBarry Smith 315c6c1daeSBarry Smith PetscFunctionBegin; 325c6c1daeSBarry Smith PetscValidHeaderSpecific(draw, PETSC_DRAW_CLASSID, 1); 33e118a51fSLisandro Dalcin PetscValidPointer(button, 2); 34e118a51fSLisandro Dalcin *button = PETSC_BUTTON_NONE; 3564f23424SLisandro Dalcin if (!draw->ops->getmousebutton) PetscFunctionReturn(0); 36e118a51fSLisandro Dalcin 37dbbe0bcdSBarry Smith PetscUseTypeMethod(draw, getmousebutton, button, x_user, y_user, x_phys, y_phys); 38e118a51fSLisandro Dalcin 399566063dSJacob Faibussowitsch PetscCallMPI(MPI_Bcast((PetscEnum *)button, 1, MPIU_ENUM, 0, PetscObjectComm((PetscObject)draw))); 405c6c1daeSBarry Smith if (x_user) bcast[0] = *x_user; 415c6c1daeSBarry Smith if (y_user) bcast[1] = *y_user; 425c6c1daeSBarry Smith if (x_phys) bcast[2] = *x_phys; 435c6c1daeSBarry Smith if (y_phys) bcast[3] = *y_phys; 449566063dSJacob Faibussowitsch PetscCallMPI(MPI_Bcast(bcast, 4, MPIU_REAL, 0, PetscObjectComm((PetscObject)draw))); 455c6c1daeSBarry Smith if (x_user) *x_user = bcast[0]; 465c6c1daeSBarry Smith if (y_user) *y_user = bcast[1]; 475c6c1daeSBarry Smith if (x_phys) *x_phys = bcast[2]; 485c6c1daeSBarry Smith if (y_phys) *y_phys = bcast[3]; 495c6c1daeSBarry Smith PetscFunctionReturn(0); 505c6c1daeSBarry Smith } 51