NDLI: Shadow buttons: exposing WIMP functionality while preserving the inking surface in sketch-based interfaces

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Content Provider	ACM Digital Library
Author	Zeleznik, Robert C. LaViola, Joseph J. Marinkas, Diane
Abstract	We present Shadow Buttons, an approach to placing WIMP interface elements into gestural and sketch-based interfaces. Utilizing the hover state, supported by pen-based devices such as Tablet PCs, we provide users with important WIMP-based functionality by invoking widgets only when the stylus hovers over "shadow" regions. In this way, every pixel of the display, including the shadows, can be drawn on. By interacting with a shadow region while in the hover state, users can temporarily display and interact with familiar WIMP elements. We explore the Shadow Button design space as it relates to handwritten mathematical expressions and also present an informal evaluation of our technique, examining various Shadow Button parameters including button size, placement, and method of invocation. Preliminary results indicate that users prefer utilizing the hover state over tapping on the Shadow Button and in general, prefer interface elements to be as close to the ink as possible. In addition, the distance between the shadow region and the menu was found to be the most important factor in Shadow Button usability.
Starting Page	159
Ending Page	164
Page Count	6
File Format	PDF
ISBN	9781605586021
DOI	10.1145/1572741.1572768
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2009-08-01
Publisher Place	New York
Access Restriction	Subscribed
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Shadow buttons: exposing WIMP functionality while preserving the inking surface in sketch-based interfaces