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Edit: -1 of 1
Time: 2009-12-04 18:15:52
Note: /pd/pd/dev/ScrollBarLogic/edit

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As part of the GUI rewrite effort, the scrollbar logic needs to be reconsidered.  This page documents the aspects of the development and testing of scrollbar logic.  There are currently 4 different algorithms to compare: Pd, Pd-extended, Pd-GUI-Rewrite, and Ico's (in order of age).

== Tests ==

=== prevents patch scrolling when no scrollbars ===
 *Pd: yes
 *Pd-extended: no, has odd movement when no scrollbars and using mouse wheel
 *Pd-GUI-Rewrite: yes
 *Ico: no, has odd movement when no scrollbars and using mouse wheel

=== select objects and move with Shift-Arrowkey ===
 *Pd: does not show scrollbars when needed
 *Pd-extended: shows/hides scrollbars correctly
 *Pd-GUI-Rewrite: does not show scrollbars when needed
 *Ico: does not show scrollbars when needed, unless you scroll with the keyboard for over a second or so, then the scrollbars show up.

=== select all and mouse drag components ===
 *Pd:  updates once mouse is released
 *Pd-extended: updates scrollbars immediately and live
 *Pd-GUI-Rewrite: updates once mouse is released
 *Ico: prevents patch contents from leaving the frame of the window, except comments

=== resize window ===
 *Pd: updates scrollbars on mouse release
 *Pd-extended: updates scrollbars live but has glitches
 *Pd-GUI-Rewrite: updates scrollbars live
 *Ico:

=== place object onto blank canvas, then select and drag off-canvas to the left ===
 *Pd: creates scrollbar on release, but its in the wrong position
 *Pd-extended: updates scrollbar live
 *Pd-GUI-Rewrite: on mouse release, recenters view so there are no scrollbars (when x value is negative)
 *Ico: updates scrollbar live, except for comments

=== place object onto blank canvas, then select and drag off-canvas to the right ===
 *Pd: creates scrollbar on release, but its in the wrong position
 *Pd-extended:  updates scrollbar live
 *Pd-GUI-Rewrite: updates scrollbar on mouse release
 *Ico:

=== place object onto blank canvas, then select and drag off-canvas to the top ===
 *Pd: creates scrollbar on release, but its in the wrong position
 *Pd-extended: updates scrollbar live
 *Pd-GUI-Rewrite: on mouse release, recenters view so there are no scrollbars (when y value is negative)
 *Ico:

=== place object onto blank canvas, then select and drag off-canvas to the bottom ===
 *Pd: creates scrollbar on release, but its in the wrong position
 *Pd-extended: updates scrollbar live
 *Pd-GUI-Rewrite: updates scrollbar on mouse release
 *Ico:

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