1 2 #include <petsc/private/drawimpl.h> /*I "petscdraw.h" I*/ 3 4 /*@ 5 PetscDrawGetMouseButton - Returns location of mouse and which button was 6 pressed. Waits for button to be pressed. 7 8 Collective 9 10 Input Parameter: 11 . draw - the window to be used 12 13 Output Parameters: 14 + button - one of `PETSC_BUTTON_LEFT`, `PETSC_BUTTON_CENTER`, `PETSC_BUTTON_RIGHT`, `PETSC_BUTTON_WHEEL_UP`, `PETSC_BUTTON_WHEEL_DOWN` 15 . x_user - horizontal user coordinate of location (user may pass in NULL). 16 . y_user - vertical user coordinate of location (user may pass in NULL). 17 . x_phys - horizontal window coordinate (user may pass in NULL). 18 - y_phys - vertical window coordinate (user may pass in NULL). 19 20 Note: 21 Only processor 0 actually waits for the button to be pressed. 22 23 Level: intermediate 24 25 .seealso: `PetscDraw`, `PetscDrawButton` 26 @*/ 27 PetscErrorCode PetscDrawGetMouseButton(PetscDraw draw, PetscDrawButton *button, PetscReal *x_user, PetscReal *y_user, PetscReal *x_phys, PetscReal *y_phys) 28 { 29 PetscReal bcast[4] = {0, 0, 0, 0}; 30 31 PetscFunctionBegin; 32 PetscValidHeaderSpecific(draw, PETSC_DRAW_CLASSID, 1); 33 PetscAssertPointer(button, 2); 34 *button = PETSC_BUTTON_NONE; 35 if (!draw->ops->getmousebutton) PetscFunctionReturn(PETSC_SUCCESS); 36 37 PetscUseTypeMethod(draw, getmousebutton, button, x_user, y_user, x_phys, y_phys); 38 39 PetscCallMPI(MPI_Bcast((PetscEnum *)button, 1, MPIU_ENUM, 0, PetscObjectComm((PetscObject)draw))); 40 if (x_user) bcast[0] = *x_user; 41 if (y_user) bcast[1] = *y_user; 42 if (x_phys) bcast[2] = *x_phys; 43 if (y_phys) bcast[3] = *y_phys; 44 PetscCallMPI(MPI_Bcast(bcast, 4, MPIU_REAL, 0, PetscObjectComm((PetscObject)draw))); 45 if (x_user) *x_user = bcast[0]; 46 if (y_user) *y_user = bcast[1]; 47 if (x_phys) *x_phys = bcast[2]; 48 if (y_phys) *y_phys = bcast[3]; 49 PetscFunctionReturn(PETSC_SUCCESS); 50 } 51