by Jesse Collis

• Visit JCMultimedia.com.au
• Follow @sirjec on Twitter
• Checkout the presentation I did on CATiledLayer Here

JCTiledScrollView is a set of classes that wrap UIScrollView and CATiledLayer. The project to simplify displaying large images and PDFs at multiple zoom scales. As the project evolves it's moving towards becoming a fully featured custom map view replacement with gestures and annotations.

Feature requests and pull-requests are most welcome.

• Display tiled bitmap images and single page PDFs with two separate classes
• Supports standard and high resolution displays
• You only need to provide one set of bitmap tiles; no need for @2x tiles
• A handy set of default UIGestureRecognizer actions and delegate callbacks
• Annotation support with an interface similar to MKMapView
• Demo code, example PNG tiles and PDF file included
• Supports iOS 4.0+

• Added a demo project written in Swift

• Moved to ARC

• You can drag annotations around over at the drag-annotations branch. This will come into master very soon
• JCTiledSCrollView is now packaged as a Static library within a workspace

• Updated source and demo to be compatible with Xcode's ARC refactor tool
• JCTiledScrollView is now provided as a static library

• Annotation support

• Merged experimental PDF rendering classes into the main project. Welcome JCTiledPDFScrollView.
• Added an initial set of UIGestureRecognizers with some optional default behaviour, similar to MKMapView

• Zooming in both directions
• Annotation selection
• Advanced UIGestureRecognizers (dragging overlays etc)
• Provide as a static library

• Cut your large images into tiles with Tile-Cutter by Jeff La Marche
• Cut your images on the command line with my fork of Chris Miles' experimental SliceTool program
• Shrink your bitmap tiles with Image Optim. It can half your tile size and improve performance greatly

• Subduing CATiledLayer by Matt Long (Cocoa is my Girlfriend)
• Apple Tech-Note Thread Safe UIKit Drawing (in iOS 4+) mentioned at WWDC 2010
• Tread safe objects in iOS4 UIGraphicsGetCurrentContext, UIImage, UIColor, UIFont
• Apple Documentation on Supporting High Resolution Screens
• Apple's View Programming Guide for iOS
• WWDC 2010 Session 104 - Designing Apps with ScrollViews
• WWDC 2011 Session 104 - Advanced Scroll View Techniques
• My presentation on CATiledLayer and JCTiledScrollView at Melbourne Cocoaheads

Initially created as an open source project for the February 2012 Melbourne Cocoaheads meeting.

Created by Jesse Collis [email protected], @sirjec, JC Multimedia Design.

The "Skipping Girl" image is copyright (c) 2012, Jesse Collis and licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License.

The JCTiledScrollView code is copyright (c) 2012, Jesse Collis [email protected] and licenced under Creative Commons Attribution 4.0