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The shortcut menu that appears whenever you right-click in the multimedia view is an Internet
Explorer defined menu and will not be described here.
You can also change the background colour and, if you are displaying a picture, centre it. This is
done through the “Multimedia View” menu, and will work only if you are displaying a JPG or a
GIF file.
4.7 The Time Bar
The time bar is where time-related information is displayed. There is a ruler and space for two
contexts on the two context bars found below the ruler. If you choose to visualise any timedependant data that have associated contexts, they will automatically appear on the time bar.
The range of the time bar will automatically expand or contract to reflect the current time range
of the visualised data.
You can interact with the time bar by:
• Left clicking any of the controls on the left hand side of the bar. These control play
backwards/forwards, single step backwards/forwards, step backwards/forwards to next event
and replay speed.
• Press left and hold on the step backwards/forwards buttons to make the buttons
automatically repeat the operation.
• Click the digital clock to toggle between frame rate display and clock display.
• Left clicking the current time cursor and dragging it left or right. This will change the current
time, which will be reflected in the graph view (time cursor moves), workspace view
(objects move) and movie view.
• Left clicking the replay loop cursors and dragging them left or right will move them. Note
that you cannot drag them over the current time cursor. If you cannot see any replay loop
cursors, they could either be off the scale of the ruler or they could be disabled. In the first
case, zooming out on the ruler will bring them back into view. In the latter case, right click
on the time bar and select the “Toggle Replay Loop” option.
• Left clicking in an area of the ruler where there is no cursor and dragging left or right moves
the whole ruler left or right.
• Left clicking any event icon on the event bars allow you to drag the event to a new position.
Once you have selected a new position and released the mouse button, the current
normalisation range will change if you have dragged one of the two events that define a
normalisation range. The operation is undoable by pressing ctrl-z (undo) or ctrl-y (redo), or
by clicking the relevant toolbar buttons ( and )..
Note that there are lists for undoing and redoing, depending on what aspect of Polygon you
are working on. If the “focus” is on the text view or graph view (the text view has the focus
if the caret is visible) the undo/redo will affect the last operation you performed in the text or
graph view regardless of whether you have altered the event bar, and vice versa.
If you change the current normalisation range, any visible normalised graphs will
automatically update.
• Right clicking on the ruler and dragging left or right zooms in or out on the ruler.
• Right clicking anywhere will display a shortcut menu as usual.
The shortcut menu for the ruler part of the time bar will contain:
• Full size. This will restore the ruler to its default state, spanning the current time range of
visualised data.
• Toggle Replay Loop. This turns the replay loop functionality on or off, displaying or hiding
the replay loop cursors.
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Last edited by Lasse Roren on 07/02/02
Page 40 of 51