Allow users to specify explicit contour levels

[mankoff]

The user should be able to view contours in 2 modes. The first (choose a number of evenly-spaced lines) is implemented. The second mode should allow the user to explicitely set the levels where the contours occur.

Behavior

basic overview

• it can be a popup menu. Pick a number, get that many lines
• it can be an edit field. Enter a number. get that many lines
• it can be toggled into advanced mode

advanced overview

• A form/window (design?) has text fields.
• Enter numbers
• Easily create new text fields.
• When done, you get contours at those data levels

behavior specific

basic specific

• valid input is positive integers
• get focus: select all
• type tab: move to next UI element

• text hilighted, menu closed
• type numbers while selected: replace content
• type letters while selected: no action (*remain selected*)
• right,left,up,down arrow: default? carat right,left,right,menu

• text not highlighted (edit mode), menu closed
• ?

• mouse inputs:
• click on textfield 1x: select all
• click on textfield 2x: open menu
• click on arrow: open menu

• menu open:
• click: select element
• type: close and enter edit mode

advanced specific

	-----------------
	| 42.31415_ (+) |	< row is selected
	|               |	
	-----------------

• opens as above, value selected
• type: replace content. Similar to above: no chars but one . allowed and floats.
• tab: create new field if content. Nothing if none.
• backspace: remove entry to blank
• click on plus: same as tab. Plus disabled until content

• new field:

  	-----------------
  	| 3.14159__ (-) |	
  	| |________ (+) |	 < cursor 
  	-----------------
  

• remove focus from current (2nd) tab when empty: go back to previous step
• same rules as above, but in this case the field can be empty during its initial state (no example entry)

[mankoff]

Some Design Notes

Behavior

basic overview

• it can be a popup menu. Pick a number, get that many lines
• it can be an edit field. Enter a number. get that many lines
• it can be toggled into advanced mode

advanced overview

• A form/window (design?) has text fields.
• Enter numbers
• Easily create new text fields.
• When done, you get contours at those data levels

behavior specific

basic specific

• valid input is positive integers
• get focus: select all
• type tab: move to next UI element

• text hilighted, menu closed
• type numbers while selected: replace content
• type letters while selected: no action (*remain selected*)
• right,left,up,down arrow: default? carat right,left,right,menu

• text not highlighted (edit mode), menu closed
• ?

• mouse inputs:
• click on textfield 1x: select all
• click on textfield 2x: open menu
• click on arrow: open menu

• menu open:
• click: select element
• type: close and enter edit mode

advanced specific

	-----------------
	| 42.31415_ (+) |	< row is selected
	|               |	
	-----------------

• opens as above, value selected
• type: replace content. Similar to above: no chars but one . allowed and floats.
• tab: create new field if content. Nothing if none.
• backspace: remove entry to blank
• click on plus: same as tab. Plus disabled until content

• new field:

  	-----------------
  	| 3.14159__ (-) |	
  	| |________ (+) |	 < cursor 
  	-----------------
  

• remove focus from current (2nd) tab when empty: go back to previous step
• same rules as above, but in this case the field can be empty during its initial state (no example entry)

[mankoff]

Oops... I'm repeating these notes in the description so they are more modifiable...