;;; mouse.el --- window system-independent mouse support -*- lexical-binding: t -*-
-;; Copyright (C) 1993-1995, 1999-2012 Free Software Foundation, Inc.
+;; Copyright (C) 1993-1995, 1999-2013 Free Software Foundation, Inc.
;; Maintainer: FSF
;; Keywords: hardware, mouse
;; Start tracking.
(track-mouse
- ;; Loop reading events and sampling the position of the mouse.
- (while draggable
- (setq event (read-event))
+ ;; Loop reading events and sampling the position of the mouse,
+ ;; until there is a non-mouse-movement event. Also,
+ ;; scroll-bar-movement events are the same as mouse movement for
+ ;; our purposes. (Why? -- cyd)
+ ;; If you change this, check that all of the following still work:
+ ;; Resizing windows by dragging mode-lines and header lines,
+ ;; and vertical lines (in windows without scroll bars).
+ ;; Doing this should not select another window, even if
+ ;; mouse-autoselect-window is non-nil.
+ ;; Mouse-1 clicks in Info header lines should advance position
+ ;; by one node at a time if mouse-1-click-follows-link is non-nil,
+ ;; otherwise they should just select the window.
+ (while (progn
+ (setq event (read-event))
+ (memq (car-safe event)
+ '(mouse-movement scroll-bar-movement
+ switch-frame select-window)))
(setq position (mouse-position))
;; Do nothing if
;; - there is a switch-frame event.
;; - the mouse isn't in the frame that we started in
;; - the mouse isn't in any Emacs frame
- ;; Drag if
- ;; - there is a mouse-movement event
- ;; - there is a scroll-bar-movement event (Why? -- cyd)
- ;; (same as mouse movement for our purposes)
- ;; Quit if
- ;; - there is a keyboard event or some other unknown event.
(cond
- ((not (consp event))
- (setq draggable nil))
((memq (car event) '(switch-frame select-window))
nil)
- ((not (memq (car event) '(mouse-movement scroll-bar-movement)))
- (when (consp event)
- ;; Do not unread a drag-mouse-1 event to avoid selecting
- ;; some other window. For vertical line dragging do not
- ;; unread mouse-1 events either (but only if we dragged at
- ;; least once to allow mouse-1 clicks get through.
- (unless (and dragged
- (if (eq line 'vertical)
- (memq (car event) '(drag-mouse-1 mouse-1))
- (eq (car event) 'drag-mouse-1)))
- (push event unread-command-events)))
- (setq draggable nil))
- ((or (not (eq (car position) frame))
- (null (car (cdr position))))
+ ((not (and (eq (car position) frame)
+ (cadr position)))
nil)
((eq line 'vertical)
;; Drag vertical divider.
growth
(- growth)))))))
;; Process the terminating event.
- (when (and (mouse-event-p event) on-link (not dragged)
- (mouse--remap-link-click-p start-event event))
- ;; If mouse-2 has never been done by the user, it doesn't have
- ;; the necessary property to be interpreted correctly.
- (put 'mouse-2 'event-kind 'mouse-click)
- (setcar event 'mouse-2))
- (push event unread-command-events)))
+ (unless dragged
+ (when (and (mouse-event-p event) on-link
+ (mouse--remap-link-click-p start-event event))
+ ;; If mouse-2 has never been done by the user, it doesn't have
+ ;; the necessary property to be interpreted correctly.
+ (put 'mouse-2 'event-kind 'mouse-click)
+ (setcar event 'mouse-2))
+ (push event unread-command-events))))
(defun mouse-drag-mode-line (start-event)
"Change the height of a window by dragging on the mode line."