xerox 19780614 On Changing The Mouse Button Semantics to Select or Select-Adjust free download

File name 19780614_On_Changing_The_Mouse_Button_Semantics_to_Select_or_Select-Adjust.pdf

IDOl SDD ABCH1V1lS. 1 I have read and unde, :,,1..,",0;:1 Page s_----T 0_--- XEROX Reviewer_---Date_--- / _Ref. za s.bJ> - I"'" ~ BUSINESS SYSTEMS f of pageB_--- Systems Development Division June 14, 1978 To: Irby, Kimball, Richard, Ayers, Newlin, McGregor, Burr C: Harslem, Reiley, Clark, Abraham, Curry From: Dave 'Smith / SD at Palo Alto Subject: On changing the mouse button semantics to SELECT or SELECT-ADJUST Filed on: [iris] select-adjust. press The Desktop has implemented a SELECT one-button mouse and a SELECT-ADJUST two-button mouse scheme as part of its selection prototypes. Based on my usage of all the schemes, those two seem significantly better than the others. In particular, the SELECT button has shown itself to be completely sufficient for text editing. The simple expedient of always having an implicit caret at the end of every text selection permits SELECT to supercede all the POINT functions. SELECT alone can do everything SELECT-POINT does, and it is simpler. While these schemes will certainly be functionally tested, it is beginning to seem plallsable that we will combine SELECT and POINT into one button. In view of this, I have been looking at the uses of POINT and how they could change under SELECT. Some of the uses of POINT we can eliminate, some we cart simply use the SELECT button keeping the semantics the same, and some we will have to change slightly. The major uses for POINT and their SELECT equivalents are: (I) Place caret in text eliminate exception: We could allow bugging to the left of the first character on a line to place a caret there. Bugging in an empty field would also place a caret, since there is nothing to select (if we adopt Ralph's suggestion for eliminating the special characters). (2) Invoke menu command, scroll, etc. use SELECT 2 (3) Specify destination of MOVE/COPY use SELECT (4) Display icon menu eliminate the icon menu do OPEN by double clicking SELECT (1st click selects icon, 2nd click opens it) alternative: click ADJUST on the icon, if there is an ADJUST button put the commands ENCRIPT, DECRIPT, CONVERT, etc. in the window menu or, even better, in the window menu icon (5) Display