Browse Prior Art Database

Maintaining Day Names during Horizontal Tetris Graph Scrolls

IP.com Disclosure Number: IPCOM000108609D
Original Publication Date: 1992-Jun-01
Included in the Prior Art Database: 2005-Mar-22
Document File: 3 page(s) / 654K

Publishing Venue

IBM

Related People

Baber, RL: AUTHOR [+3]

Abstract

The Tetris composite calendar graph has been described in a previous disclosure. The day names corresponding to the times are displayed at each midnight hour point. One user interface problem that arises is when horizontally scrolling, the day name scrolls off the graph before the next day appears, displaying hour indications but leaving the user guessing the day to which these hours belong. This is a general problem when scrolling any control that spans a domain greater than what can be displayed at any one time.

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Maintaining Day Names during Horizontal Tetris Graph Scrolls

       The Tetris composite calendar graph has been described in
a previous disclosure.  The day names corresponding to the times are
displayed at each midnight hour point.  One user interface problem
that arises is when horizontally scrolling, the day name scrolls off
the graph before the next day appears, displaying hour indications
but leaving the user guessing the day to which these hours belong.
This is a general problem when scrolling any control that spans a
domain greater than what can be displayed at any one time.

      The solution is to detect in software the day corresponding to
the left most time displayed on the X axis when scrolling left, or
the right-most time displayed when scrolling right.  This day is
displayed consistently at the margin (the left margin in Fig. 1)
until "overtaken" by a subsequent day (which occurs at the 'Midnight'
tic mark). Fig. 2 and 3 illustrate a scroll to the left, where
Wednesday overtakes Tuesday.  The day name 'Wednesday' scrolls
normally along with the X axis and the colored blocks. In other
words, day names are displayed at 'Midnight' tic marks.  If no
midnight tic mark appears in the range of the graph displayed, the
day name is put at the left margin.  Day names do not scroll off the
graph, but 'stick' at either margin (depending on the direction of
scroll) until 'overtaken' by the previous or subsequent day name.
The detection of the left-most and...