Po Lu a9a8d5e959 Register ``pinch to zoom'' touch screen gestures ... * doc/emacs/input.texi (Touchscreens): Address pinch gestures. * doc/lispref/commands.texi (Touchscreen Events): Address touch screen pinch events and the process by which they are produced. * java/org/gnu/emacs/EmacsWindow.java (figureChange) <ACTION_POINTER_DOWN>: Supply pointer index to getX and getY, correcting a mistake where the first touch point's coordinate was saved here in lieu of the pointer that was pressed's. * lisp/touch-screen.el (touch-screen-current-tool): Revise doc string. (touch-screen-aux-tool): New variable. (touch-screen-scroll-point-to-y, touch-screen-pinch): New functions. (global-map): Bind [touchscreen-pinch] to touch-screen-pinch. (touch-screen-handle-point-update): Revise doc string; set new tenth field of t-s-c-t to POINT relative to its window, without regard to whether an event has been sent. (touch-screen-distance, touch-screen-centrum): New functions. (touch-screen-handle-aux-point-update): New function; generate and send touchscreen-pinch if need be. (touch-screen-handle-point-up): If an ancillary tool exists, transfer the information there into touch-screen-current-tool and clear t-s-a-t. (touch-screen-handle-touch): Call t-s-a-p-u as is proper; set t-s-a-t if a touchscreen-down event arrives and t-s-c-t is set. * src/androidterm.c (handle_one_android_event): Properly save the event's X and Y when a new touch point is registered.		2023-11-15 21:07:14 +08:00
..
gnu/emacs	Register ``pinch to zoom'' touch screen gestures	2023-11-15 21:07:14 +08:00