https://github.com/litl/WKVerticalScrollBar

A traditional-style scrollbar for iOS that integrates with existing UIScrollView or UIScrollView subclasses.
https://github.com/litl/WKVerticalScrollBar

Last synced: about 1 month ago
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A traditional-style scrollbar for iOS that integrates with existing UIScrollView or UIScrollView subclasses.

• Host: GitHub
• URL: https://github.com/litl/WKVerticalScrollBar
• Owner: litl
• License: mit
• Created: 2012-06-27T21:13:33.000Z (over 12 years ago)
• Default Branch: master
• Last Pushed: 2016-03-07T23:37:18.000Z (almost 9 years ago)
• Last Synced: 2024-09-17T14:27:24.980Z (3 months ago)
• Language: Objective-C
• Size: 766 KB
• Stars: 249
• Watchers: 29
• Forks: 41
• Open Issues: 7
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

• awesome - WKVerticalScrollBar - A traditional-style scrollbar for iOS that integrates with existing UIScrollView or UIScrollView subclasses. (etc)
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README

        
# WKVerticalScrollBar

![WKVerticalScrollBar in repose](https://raw.github.com/litl/WKVerticalScrollBar/master/images/demo-02.png)

![WKVerticalScrollBar in action with optional accessory view](https://raw.github.com/litl/WKVerticalScrollBar/master/images/demo-01.png)

A traditional-style scrollbar for iOS that integrates with existing UIScrollView or UIScrollView subclasses.

`WKScrollBar` draws a persistent scrollbar handle on top of a UIScrollView.  When tapped and dragged, `WKScrollBar` will scroll proportionately to its position on the screen.  This comes in handy with apps which present long lists of items (`UITextView`, `UITableView`, `AQGridView`, etc), as it makes it easy to navigate to any point in a list.

## Installing

### CocoaPods

Installing via [cocoapods](http://cocoapods.org) is the preferred method of using `WKVerticalScrollBar`.  Simply add the following line to your `Podfile`:

    dependency 'WKVerticalScrollBar', '0.2.0'

        

### Manually

Copy both `WKVerticalScrollBar.h` and `WKVerticalScrollBar.m` into your project.  Make sure you've linked your project with `QuartzCore.framework`.

## Usage

`WKVerticalScrollBar` is meant to integrate quickly with projects using `UIScrollView` or `UIScrollView` subclasses like  `AQGridView`.  Getting started is easy:

1. Create a `WKVerticalScrollBar` instance either in IB or in your `-init` method.

2. Add the `WKVerticalScrollBar` to the parent `UIView`, making sure that it is the frontmost `UIView` either by adding it last, or via `-bringSubviewToFront:`.

3. Size the `WKVerticalScrollBar` so that it takes up the same area as the `UIScrollView` that it will manage.

4. Tell `WKVerticalScrollBar` which `UIScrollView` it will manage via `-setScrollView:`.

## Appearance

Modifying the look and feel of `WKScrollBar` can be done via the following methods:

* `-setHandleColor:forState:`

    Sets a color for `UIControlStateNormal` and `UIControlStateSelected` to control the normal and selected (finger down) colors of the handle.

    

    Defaults: `UIControlStateNormal`: 40% black, `UIControlStateSelected`: 60% black

* `-setHandleWidth:`

    Sets the width of the handle in the normal state.

    

    Default: 5pt.

    

* `-setHandleSelectedWidth:`

    Sets the width of the handle when selected.  This allows you to grow the handle when the user's finger is over the handle.

    

    Default: 15pt.

    

* `-setHandleHitArea:`

    Sets the width of the hit area for the handle.  This will allow your control to have a slightly larger hit area than what is visually presented.  Apple's iOS Human Interface Guidelines suggest that this be 44pt.

    

    Default: 44pt.

    

* `-setHandleMinimumHeight:`

    Sets the minimum height of the handle.

    

    The height of the handle is calculated based upon the ratio of the `contentOffset` and the `frame`.  If the `contentOffset` is too large, the handle may be too small to touch comfortably.  Use this parameter to ensure that a minimum handle size is preserved.

    

* `-setHandleCornerRadius:` and `-setHandleSelectedCornerRadius:`

    Sets the corner radius of the handle in normal and selected mode.

## Contributing

Anyone who would like to contribute to the project is more than welcome.

Basically, there's just a few steps to getting started:

1. Fork this repo

2. Make your changes

3. Add yourself to the AUTHORS file and submit a pull request!

## Copyright and License

WKVerticalScrollBar is Copyright (c) 2012 litl, LLC and licensed under the MIT license. See the LICENSE file for full details.