Calculate new position for pager without using pager's current position(like .getX()) this method allows to avoid incorrect position values while anim

@param PaperOnboardingPage new content page to show @return configured view with new content image

@param PaperOnboardingPage new content page to show @return configured view with new content texts

Converts DP values to PX @param dpValue value to convert in dp @return converted value in px

@param prev set true to animate onto previous content page (default is false - animating to next content page)

Calculate current center coordinates of pager element with provided index @param activeElementIndex index of element (from 0) @return array with 2 co

@param color new background color for new @return animator set with background color circular reveal animation

@param currentContentIcon currently displayed view with icon @param newContentIcon newly created and prepared view to display @return animator set

@param currentContentText currently displayed view with text @param newContentText newly created and prepared view to display @return animator set

Create animator for pager icon @param oldIndex index currently active icon @param newIndex index of new active icon @return animator set with this an

@param iconDrawableRes drawable resource for icon @param isActive is active element @return configured pager icon with selected drawable and se

Returns content for currently active element @return content for currently active element

Initializes starting state

Changes active element to the next one and returns a new content @return content for next element

Changes active element to the previous one and returns a new content @return content for previous element

Main constructor for create a Paper Onboarding Engine @param rootLayout root paper onboarding layout element @param contentElements ordered list

@return index of currently active element