If you need to get the Y position of a vertically scrolling container, create a text box. Then on the container scroll trigger, set a variable that evaluates the numerical callback value from the event (Y position). Then add a callback that changes the text property of the text box by reading from the variable.

An example of a sticky scrolling sidebar (website)

A score based filter system that I hacked using variables. Each of the 10 cities is assigned a score for avg temperature, Taxes, and Cost of living, and when the sliders correspond to those values cumulatively, those cities show up on the map.

3 prototypes showing different uses of the form components for iOS 1) Activate / de-activate button when checking / un-checking Terms of Service 2) Capture text input to change property 3) Change number of tickets - limit 8 See how they were created step-by-step in the Using Forms webinar video: https://vimeo.com/118919393 This version on Vimeo includes time-codes so you can jump to particular sub-sections (repeated below as a preview): > Range of iOS form input controls 2:02 > Labels 2:17 > Text fields 2:32 > Setting placeholder text 3:04 > 5 Input Types that display the appropriate iOS keyboard (Text, Numeric, Email, Password, Telephone) 3:30 > Using the Telephone keyboard for credit card number input (large # keys) 4:08 > Need to view prototype on device in order to see the range of keyboards 5:59 > Multi-line text area input field 6:24 > Search Bar 6:40 > Checkbox control customization 7:22 > On/Off Switch control customization 7:52 > Slider control customization 9:27 > Increasing size of slider handle 9:47 > Picker Wheel Customization 10:00 > Prototype example: Activate button when checking terms of service 10:42 > Create a button with two states (using convert to container) 12:55 > Adding interactions to a checkbox control (on change activation/deactivation) 14:45 > Definition of variable and range of uses 17:04 > Using variables with text field interactions 18:25 > Prototype Example: Using a variable to capture text input and show it in a different text box using change property. 23:27 > Prototype: Use variables to increment and decrement counter showing number of tickets being purchased. 28:40 > Searching full range of icons built into Proto.io 29:10 > Using a variable to limit the range of tickets (0 to 8) 32:46 > Copying and pasting interactions with Variables 40:08

This is prototype was created for the Net magazine article "Design Prototypes That Reel Real - with Proto.io. It includes a step-by-step written tutorial with screenshots here: http://www.creativebloq.com/web-design/design-prototypes-feel-real-protoio-21619311 It's a product concept for juxtaposing two photos and typing a caption about the connection between them. It should look like this. The tutorial starts with bringing in a range of external assets. Then it'll show how to design assets and customize native components within the tool. Interactions will be triggered by gestures, keyboard input, and automatically as the prototype loads, then choreographed along an animation timeline. Enjoy... TAGS text input capture staggered animation variable variables show captured text input on different screen

monitoring app

Animated storyboard using low fidelity assets created in Proto.io, and icons found within the Proto.io library and Noun Project. The "On Screen Show" screen interaction is used to animate the content through a sequence of callbacks. See how this was made step-by-step in this webinar video on Low Fidelity prototyping: http://docs.proto.io/videos/low-fidelity-prototyping-with-proto-io/ TAGS: storyboard low fidelity auto-play