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Motif and CDE 2.1 Style Guide Reference
Point Technique
Reference
Description
The point technique is an individual selection technique in which a single
point is identified. If the point is on a selectable element, that element is
either selected or has its selection state toggled. The following describes
the steps for mouse-based and keyboard-based techniques:
- Mouse-based point technique
- Click the SELECT button at the desired point or on the desired element.
If no mouse-based group technique is supported for the selection
scope:
- Press the SELECT button on a selectable element.
- Release the SELECT button on the same element (with arbitrary
movement of the mouse in between).
- Mouse-based point technique, forcing toggle mode
- Click Ctrl SELECT at the desired point, or on the desired element.
If no mouse-based group technique is supported for the selection
scope:
- Press Ctrl SELECT on a selectable element.
- Release the SELECT button on the same element with arbitrary
movement of the mouse in between).
- Keyboard-based point technique
- Press Select, Space (unless in text), or press Ctrl Space with the cursor
at the desired point or on the desired element.
Guidelines
- Required
- When the user is using the point technique in select mode and presses or
clicks the SELECT button on a selectable element and then releases SELECT on
the same element:
- Select that element.
- Deselect all other elements in the scope.
- Required
- When using the point technique in select mode and the user clicks the
SELECT button in the background of a selection scope, deselect all elements in
the scope.
- Required
- When the user is using the point technique in select mode and presses Ctrl
SELECT in place of SELECT, select as if toggle mode were in use.
- Required
- When the user is using the point technique in toggle mode and presses or
clicks the SELECT button on a selectable element and then releases SELECT on
the same element, toggle the selection state of that element.
- Required
- Allow the point technique in toggle mode to select an element as
follows:
- If only one element at a time may be selected in a scope, deselect
the currently selected element (if any) in the scope.
- If any number of elements can be selected in the scope, do not
change the selection state of the other elements.
- Required
- When the user is using the point technique in toggle mode and clicks the
SELECT button in the background of a selection scope, it should have no effect
on the selection state of the elements in the scope.
- Required
- When the user is using the point technique in normal mode while the active
cursor is on a selectable element and presses Select, Space (unless in text),
or Ctrl Space:
- Select that element.
- Deselect all other elements in the scope.
- Required
- When the user is using the point technique in normal mode, if the active
cursor is in the background of a selection scope and the user presses Select,
Space (unless in text), or Ctrl Space, deselect all elements in the scope.
- Required
- When the user is using the point technique in add mode while the active
cursor is on a selectable element and presses Select, Space (unless in text),
or Ctrl Space, toggle the selection state of that element.
- Required
- Allow the point technique in add mode to select an element as
follows:
- If only one element at a time may be selected in a scope, deselect
the currently selected element (if any) in the scope.
- If selections are required to be contiguous, deselect all other
elements in the scope.
- If any number of elements can be selected in the scope, do not
change the selection state of the other elements.
- Required
- When the user is using the point technique in add mode while the active
cursor is in the background of a selection scope and presses Select, Space
(unless in text), or Ctrl Space:
- If selections are required to be contiguous, deselect all elements
in the scope.
- If selections may be discontiguous, do not change the selection
state of the elements in the scope.
- Required
- When the user performs the point technique on a selectable element:
- Identify that element as an anchor element for later use in adjustment of
the selection.
- Define the current selection region to consist of that element.
- Required
- When the user uses the point technique on a selectable element, identify a
point as an anchor point for later use in adjustment of the selection. That
point should be:
- The pointer position, for the mouse-based technique
- The cursor position, for the keyboard-based technique with a text
or graphics cursor
- The center of the element, for the keyboard-based technique with an
element cursor
- Required
- When the user uses the point technique in the background of a selection
scope:
- Identify that point as an anchor point for later use in adjustment
of the selection.
- Define the current selection region to be empty.
- Required
- After a mouse-based point technique, place the active cursor as
follows:
- At the anchor point, if it can be placed there
- On the anchor element, if using an element cursor
- Where the cursor previously was in the scope, if there is no
anchor element
Essential Related Topics
For more information, see the Adjustment Techniques, Selection Modes,
Selection Policies, and Selection Techniques reference pages.
Supplemental Related Topics
For more information, see the Selection Models reference page.
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