DocumentScrollListener

All Implemented Interfaces:
```
public interface DocumentScrollListener

                    
```
Interface for listeners that can receive scrolling events of a PdfFragment. This class may be used to implement custom scroll indicators or scrollbar views.

Nested Class Summary

Nested Classes
Modifier and Type Class Description

Field Summary

Fields
Modifier and Type Field Description

Constructor Summary

Constructors

Constructor Description

Enum Constant Summary

Enum Constants
Enum Constant Description

Method Summary

Modifier and Type	Method	Description
`abstract void`	`onScrollStateChanged(@NonNull() PdfFragment fragment, @NonNull() ScrollState state)`	Called whenever the current scroll state of the PdfFragment changed.
`abstract void`	`onDocumentScrolled(@NonNull() PdfFragment fragment, int currX, int currY, int maxX, int maxY, int extendX, int extendY)`	Called whenever the document in the fragment scrolled.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
- Method Detail
  - onScrollStateChanged
```
 abstract void onScrollStateChanged(@NonNull() PdfFragment fragment, @NonNull() ScrollState state)
```
    Called whenever the current scroll state of the PdfFragment changed.
    
    Parameters:
    
    fragment - PdfFragment whose scroll state changed.
    
    state - The new scroll state.
  - onDocumentScrolled
```
 abstract void onDocumentScrolled(@NonNull() PdfFragment fragment, int currX, int currY, int maxX, int maxY, int extendX, int extendY)
```
    Called whenever the document in the fragment scrolled. Values are expressed in an arbitrary unit and may change with every call. Also maxX and maxY are not guaranteed to remain the same between two calls.
    
    Parameters:
    
    fragment - The scrolled PdfFragment.
    
    currX - Current scroll amount X.
    
    currY - Current scroll amount Y.
    
    maxX - Maximum scroll amount of the X dimension.
    
    maxY - Maximum scroll amount of the Y dimension.
    
    extendX - Extend of the visible content in the X dimension.
    
    extendY - Extend of the visible content in the Y dimension.