mirror of
git://git.sv.gnu.org/emacs.git
synced 2025-12-15 10:30:25 -08:00
f9732131cf
* configure.ac (ANDROID_MIN_SDK): New variable. (DX): Remove and replace with D8. (XCONFIGURE): Check for the minimum version of Android the cross compiler compiles for. Generate java/AndroidManifest.xml from java/AndroidManifest.xml.in. Allow using Zlib on Android. * java/AndroidManifest.xml.in: New file. Use the minimum SDK detected by configure. * java/Makefile.in (top_srcdir, version): New variables. (DX, D8): Replace with D8. (ANDROID_MIN_SDK, APK_NAME): New variables. (.PHONY): (.PRECIOUS): (classes.dex): (emacs.apk): Generate $(APK_NAME) instead of `emacs.apk'. * java/debug.sh: New option --attach-existing. Attach to an existing Emacs instance when specified. * java/org/gnu/emacs/EmacsActivity.java (EmacsActivity): New field `isPaused'. (invalidateFocus1): Fix infinite recursion. (detachWindow): Deiconify window. (attachWindow): Iconify the window if the activity is paused. (onCreate): Use the ``no title bar'' theme. (onPause, onResume): New functions. * java/org/gnu/emacs/EmacsNative.java (sendTouchUp, sendTouchDown) (sendTouchMove, sendWheel, sendIconified, sendDeiconified): New functions. * java/org/gnu/emacs/EmacsSdk7FontDriver.java (Sdk7Typeface): (list): Remove logging for code that is mostly going to be unused. * java/org/gnu/emacs/EmacsService.java (ringBell, queryTree) (getScreenWidth, getScreenHeight, detectMouse): New functions. * java/org/gnu/emacs/EmacsSurfaceView.java (EmacsSurfaceView) (surfaceChanged, surfaceCreated, surfaceDestroyed): Add extra debug logging. Avoid deadlock in surfaceCreated. * java/org/gnu/emacs/EmacsView.java (EmacsView): Try very hard to make the SurfaceView respect Z order. It didn't work. (handleDirtyBitmap): Copy over the contents from the old bitmap. (explicitlyDirtyBitmap): New function. (onLayout): Don't dirty bitmap if unnecessary. (damageRect, swapBuffers): Don't synchronize so hard. (onTouchEvent): Call window.onTouchEvent instead. (moveChildToBack, raise, lower): New functions. * java/org/gnu/emacs/EmacsWindow.java (Coordinate): New subclass. (pointerMap, isMapped, isIconified, dontFocusOnMap) (dontAcceptFocus): New fields. (EmacsWindow): Don't immediately register unmapped window. (viewLayout): Send configure event outside the lock. (requestViewLayout): Explicitly dirty the bitmap. (mapWindow): Register the window now. Respect dontFocusOnMap. (unmapWindow): Unregister the window now. (figureChange, onTouchEvent): New functions. (onSomeKindOfMotionEvent): Handle scroll wheel events. (reparentTo, makeInputFocus, raise, lower, getWindowGeometry) (noticeIconified, noticeDeiconified, setDontAcceptFocus) (setDontFocusOnMap, getDontFocusOnMap): New functions. * java/org/gnu/emacs/EmacsWindowAttachmentManager.java (registerWindow, detachWindow): Synchronize. (noticeIconified, noticeDeiconified): New functions. (copyWindows): New function. * lisp/frame.el (frame-geometry, frame-edges) (mouse-absolute-pixel-position, set-mouse-absolute-pixel-position) (frame-list-z-order, frame-restack, display-mouse-p) (display-monitor-attributes-list): Implement on Android. * lisp/mwheel.el (mouse-wheel-down-event): (mouse-wheel-up-event): (mouse-wheel-left-event): (mouse-wheel-right-event): Define on Android. * src/android.c (struct android_emacs_service): New methods `ringBell', `queryTree', `getScreenWidth', `getScreenHeight', and `detectMouse'. (struct android_event_queue, android_init_events) (android_next_event, android_write_event): Remove write limit. (android_file_access_p): Handle directories correcty. (android_close): Fix coding style. (android_fclose): New function. (android_init_emacs_service): Initialize new methods. (android_reparent_window): Implement function. (android_bell, android_set_input_focus, android_raise_window) (android_lower_window, android_query_tree, android_get_geometry) (android_get_screen_width, android_get_screen_height) (android_get_mm_width, android_get_mm_height, android_detect_mouse) (android_set_dont_focus_on_map, android_set_dont_accept_focus): New functions. (struct android_dir): New structure. (android_opendir, android_readdir, android_closedir): New functions. (emacs_abort): Implement here on Android and poke debuggerd into generating a tombstone. * src/android.h: Update prototypes. * src/androidfns.c (android_set_parent_frame): New function. (android_default_font_parameter): Use sane font size by default. (Fx_display_pixel_width, Fx_display_pixel_height) (Fx_display_mm_width, Fx_display_mm_height) (Fx_display_monitor_attributes_list): Rename to start with `android-'. Implement. Fiddle with documentation to introduce Android specific nuances. (Fandroid_display_monitor_attributes_list): New function. (Fx_frame_geometry, frame_geometry): New function. (Fandroid_frame_geometry): Implement correctly. (Fx_frame_list_z_order): Rename to start with `android-'. (android_frame_list_z_order, Fandroid_frame_list_z_order): Implement. (Fx_frame_restack): Rename to start with `android-'. (Fandroid_frame_restack): ``Implement''. (Fx_mouse_absolute_pixel_position): Rename to start with `android-'. (Fandroid_mouse_absolute_pixel_position): ``Implement''. (Fx_set_mouse_absolute_pixel_position): Rename to start with `android-'. (Fandroid_set_mouse_absolute_pixel_position): ``Implement''. (Fandroid_detect_mouse): New function. (android_set_menu_bar_lines): Use FRAME_ANDROID_DRAWABLE when clearing area. (android_set_no_focus_on_map, android_set_no_accept_focus): New functions. (android_frame_parm_handlers): Register new frame parameter handlers. (syms_of_androidfns): Update appropriately. * src/androidfont.c (androidfont_draw): Use FRAME_ANDROID_DRAWABLE instead of FRAME_ANDROID_WINDOW. * src/androidgui.h (enum android_event_type): New events. (struct android_touch_event, struct android_wheel_event) (struct android_iconify_event): New structures. (union android_event): Add new events. * src/androidterm.c (android_clear_frame): Use FRAME_ANDROID_DRAWABLE instead of FRAME_ANDROID_WINDOW. (android_flash, android_ring_bell): Implement bell ringing. (android_toggle_invisible_pointer): Don't TODO function that can't be implemented. (show_back_buffer, android_flush_dirty_back_buffer_on): Check if a buffer flip is required before doing the flip. (android_lower_frame, android_raise_frame): Implement functions. (android_update_tools, android_find_tool): New functions. (handle_one_android_event): Handle new iconification, wheel and touch events. (android_read_socket): Implement pending-autoraise-frames. (android_frame_up_to_date): Implement bell ringing. (android_buffer_flipping_unblocked_hook): Check if a buffer flip is required before doing the flip. (android_focus_frame, android_frame_highlight) (android_frame_unhighlight): New function. (android_frame_rehighlight): Implement functions. (android_iconify_frame): Always display error. (android_set_alpha): Update commentary. (android_free_frame_resources): Free frame touch points. (android_scroll_run, android_flip_and_flush) (android_clear_rectangle, android_draw_fringe_bitmap) (android_draw_glyph_string_background, android_fill_triangle) (android_clear_point, android_draw_relief_rect) (android_draw_box_rect, android_draw_glyph_string_bg_rect) (android_draw_image_foreground, android_draw_stretch_glyph_string) (android_draw_underwave, android_draw_glyph_string_foreground) (android_draw_composite_glyph_string_foreground) (android_draw_glyphless_glyph_string_foreground) (android_draw_glyph_string, android_clear_frame_area) (android_clear_under_internal_border, android_draw_hollow_cursor) (android_draw_bar_cursor, android_draw_vertical_window_border) (android_draw_window_divider): Use FRAME_ANDROID_DRAWABLE instead of FRAME_ANDROID_WINDOW for drawing operations. * src/androidterm.h (struct android_touch_point): New structure. (struct android_output): New fields. (FRAME_ANDROID_NEED_BUFFER_FLIP): New macro. * src/dired.c (emacs_readdir, open_directory) (directory_files_internal_unwind, read_dirent) (directory_files_internal, file_name_completion): Add indirection over readdir and opendir. Use android variants on Android. * src/dispnew.c (Fopen_termscript): * src/fileio.c (fclose_unwind): Use emacs_fclose. (Faccess_file): Call android_file_access_p. (file_accessible_directory_p): Append right suffix to Android assets directory. (do_auto_save_unwind): Use emacs_fclose. * src/keyboard.c (lispy_function_keys): Use right function key for page up and page down. (Fopen_dribble_file): Use emacs_fclose. * src/lisp.h: New prototype emacs_fclose. * src/lread.c (close_infile_unwind): Use emacs_fclose. * src/sfnt.c (sfnt_curve_is_flat): Fix area-squared computation. (sfnt_prepare_raster): Compute raster width and height consistently with outline building. (sfnt_build_outline_edges): Use the same offsets used to set offy and offx. (main): Adjust debug code. * src/sfntfont-android.c (sfntfont_android_saturate32): Delete function. (sfntfont_android_blend, sfntfont_android_blendrgb): Remove unnecessary debug code. (sfntfont_android_composite_bitmap): Prevent out of bounds write. (sfntfont_android_put_glyphs): Use FRAME_ANDROID_DRAWABLE. (init_sfntfont_android): Initialize Monospace Serif font to something sensible. * src/sfntfont.c (sfntfont_text_extents): Clear glyph metrics before summing up pcm. (sfntfont_draw): Use s->font instead of s->face->font. * src/sysdep.c (emacs_fclose): Wrap around android_fclose on android. * src/term.c (Fsuspend_tty): (delete_tty): Use emacs_fclose. * src/verbose.mk.in (AM_V_DX): Replace with D8 version.
555 lines
22 KiB
EmacsLisp
555 lines
22 KiB
EmacsLisp
;;; mwheel.el --- Mouse wheel support -*- lexical-binding:t -*-
|
|
|
|
;; Copyright (C) 1998-2023 Free Software Foundation, Inc.
|
|
|
|
;; Keywords: mouse
|
|
;; Package: emacs
|
|
|
|
;; This file is part of GNU Emacs.
|
|
|
|
;; GNU Emacs is free software: you can redistribute it and/or modify
|
|
;; it under the terms of the GNU General Public License as published by
|
|
;; the Free Software Foundation, either version 3 of the License, or
|
|
;; (at your option) any later version.
|
|
|
|
;; GNU Emacs is distributed in the hope that it will be useful,
|
|
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
;; GNU General Public License for more details.
|
|
|
|
;; You should have received a copy of the GNU General Public License
|
|
;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
|
|
|
|
;;; Commentary:
|
|
|
|
;; This enables the use of the mouse wheel (or scroll wheel) in Emacs.
|
|
;; Under X11/X.Org, the wheel events are sent as mouse-4/mouse-5
|
|
;; events.
|
|
|
|
;; Mouse wheel support is already enabled by default on most graphical
|
|
;; displays. You can toggle it using `M-x mouse-wheel-mode'.
|
|
|
|
;;; Code:
|
|
|
|
;; Implementation note:
|
|
;;
|
|
;; I for one would prefer some way of converting the mouse-4/mouse-5
|
|
;; events into different event types, like 'mwheel-up' or
|
|
;; 'mwheel-down', but I cannot find a way to do this very easily (or
|
|
;; portably), so for now I just live with it.
|
|
|
|
(require 'timer)
|
|
|
|
(defvar mouse-wheel-mode)
|
|
|
|
(defvar mouse-wheel--installed-bindings-alist nil
|
|
"Alist of all installed mouse wheel key bindings.")
|
|
|
|
;; Setter function for mouse-button user-options. Switch Mouse Wheel
|
|
;; mode off and on again so that the old button is unbound and
|
|
;; new button is bound to mwheel-scroll.
|
|
|
|
(defun mouse-wheel-change-button (var button)
|
|
(set-default var button)
|
|
;; Sync the bindings if they're already setup.
|
|
(when (and mouse-wheel--installed-bindings-alist
|
|
(bound-and-true-p mouse-wheel-mode))
|
|
(mouse-wheel-mode 1)))
|
|
|
|
(defcustom mouse-wheel-down-event
|
|
(if (or (featurep 'w32-win) (featurep 'ns-win)
|
|
(featurep 'haiku-win) (featurep 'pgtk-win)
|
|
(featurep 'android-win))
|
|
'wheel-up
|
|
'mouse-4)
|
|
"Event used for scrolling down."
|
|
:group 'mouse
|
|
:type 'symbol
|
|
:set 'mouse-wheel-change-button)
|
|
|
|
(defcustom mouse-wheel-down-alternate-event
|
|
(if (featurep 'xinput2)
|
|
'wheel-up
|
|
(unless (featurep 'x)
|
|
'mouse-4))
|
|
"Alternative wheel down event to consider."
|
|
:group 'mouse
|
|
:type 'symbol
|
|
:version "29.1"
|
|
:set 'mouse-wheel-change-button)
|
|
|
|
(defcustom mouse-wheel-up-event
|
|
(if (or (featurep 'w32-win) (featurep 'ns-win)
|
|
(featurep 'haiku-win) (featurep 'pgtk-win)
|
|
(featurep 'android-win))
|
|
'wheel-down
|
|
'mouse-5)
|
|
"Event used for scrolling up."
|
|
:group 'mouse
|
|
:type 'symbol
|
|
:set 'mouse-wheel-change-button)
|
|
|
|
(defcustom mouse-wheel-up-alternate-event
|
|
(if (featurep 'xinput2)
|
|
'wheel-down
|
|
(unless (featurep 'x)
|
|
'mouse-5))
|
|
"Alternative wheel up event to consider."
|
|
:group 'mouse
|
|
:type 'symbol
|
|
:version "29.1"
|
|
:set 'mouse-wheel-change-button)
|
|
|
|
(defcustom mouse-wheel-click-event 'mouse-2
|
|
"Event that should be temporarily inhibited after mouse scrolling.
|
|
The mouse wheel is typically on the mouse-2 button, so it may easily
|
|
happen that text is accidentally yanked into the buffer when
|
|
scrolling with the mouse wheel. To prevent that, this variable can be
|
|
set to the event sent when clicking on the mouse wheel button."
|
|
:group 'mouse
|
|
:type 'symbol
|
|
:set 'mouse-wheel-change-button)
|
|
|
|
(defcustom mouse-wheel-inhibit-click-time 0.35
|
|
"Time in seconds to inhibit clicking on mouse wheel button after scroll."
|
|
:group 'mouse
|
|
:type 'number)
|
|
|
|
(defcustom mouse-wheel-scroll-amount
|
|
'(1 ((shift) . hscroll)
|
|
((meta) . nil)
|
|
((control meta) . global-text-scale)
|
|
((control) . text-scale))
|
|
"Amount to scroll windows by when spinning the mouse wheel.
|
|
This is an alist mapping the modifier key to the amount to scroll when
|
|
the wheel is moved with the modifier key depressed.
|
|
Elements of the list have the form (MODIFIER . AMOUNT) or just AMOUNT if
|
|
MODIFIER is nil.
|
|
|
|
AMOUNT should be the number of lines to scroll, or nil for near full
|
|
screen. It can also be a floating point number, specifying the fraction of
|
|
a full screen to scroll. A near full screen is `next-screen-context-lines'
|
|
less than a full screen.
|
|
|
|
If AMOUNT is the symbol `hscroll', this means that with MODIFIER,
|
|
the mouse wheel will scroll horizontally instead of vertically.
|
|
|
|
If AMOUNT is the symbol `text-scale' or `global-text-scale', this
|
|
means that with MODIFIER, the mouse wheel will change the font size
|
|
instead of scrolling (by adjusting the font height of the default
|
|
face, either locally in the buffer or globally). For more
|
|
information, see `text-scale-adjust' and `global-text-scale-adjust'."
|
|
:group 'mouse
|
|
:type '(cons
|
|
(choice :tag "Normal"
|
|
(const :tag "Full screen" :value nil)
|
|
(integer :tag "Specific # of lines")
|
|
(float :tag "Fraction of window")
|
|
(cons
|
|
(repeat (choice :tag "modifier"
|
|
(const alt) (const control) (const hyper)
|
|
(const meta) (const shift) (const super)))
|
|
(choice :tag "action"
|
|
(const :tag "Scroll full screen" :value nil)
|
|
(integer :tag "Scroll specific # of lines")
|
|
(float :tag "Scroll fraction of window"))))
|
|
(repeat
|
|
(cons
|
|
(repeat (choice :tag "modifier"
|
|
(const alt) (const control) (const hyper)
|
|
(const meta) (const shift) (const super)))
|
|
(choice :tag "action"
|
|
(const :tag "Scroll full screen" :value nil)
|
|
(integer :tag "Scroll specific # of lines")
|
|
(float :tag "Scroll fraction of window")
|
|
(const :tag "Scroll horizontally" :value hscroll)
|
|
(const :tag "Change buffer face size" :value text-scale)
|
|
(const :tag "Change global face size" :value global-text-scale)))))
|
|
:set 'mouse-wheel-change-button
|
|
:version "28.1")
|
|
|
|
(defcustom mouse-wheel-progressive-speed t
|
|
"If nil, scrolling speed is proportional to the wheel speed.
|
|
If non-nil, moving the wheel faster will make scrolling
|
|
progressively faster.
|
|
|
|
Note that this has no effect when `mouse-wheel-scroll-amount' specifies
|
|
a \"near full screen\" scroll or when the mouse wheel sends key instead
|
|
of button events."
|
|
:group 'mouse
|
|
:type 'boolean)
|
|
|
|
(defcustom mouse-wheel-follow-mouse t
|
|
"Whether the mouse wheel should scroll the window that the mouse is over.
|
|
This affects both the commands for scrolling and changing the
|
|
face height."
|
|
:group 'mouse
|
|
:type 'boolean)
|
|
|
|
(defcustom mouse-wheel-scroll-amount-horizontal 1
|
|
"Amount to scroll windows horizontally.
|
|
Its value can be changed dynamically by using a numeric prefix argument
|
|
before starting horizontal scrolling.
|
|
It has effect when `mouse-wheel-scroll-amount' binds the value `hscroll'
|
|
to one of modifiers (`Shift' by default)."
|
|
:group 'mouse
|
|
:type 'number
|
|
:version "28.1")
|
|
|
|
;;; For tilt-scroll
|
|
;;;
|
|
(defcustom mouse-wheel-tilt-scroll nil
|
|
"Enable horizontal scrolling by tilting mouse wheel or via touchpad.
|
|
Also see `mouse-wheel-flip-direction'."
|
|
:group 'mouse
|
|
:type 'boolean
|
|
:version "26.1")
|
|
|
|
(defcustom mouse-wheel-flip-direction nil
|
|
"Swap direction of `wheel-right' and `wheel-left'.
|
|
By default, `wheel-right' scrolls the text to the right,
|
|
and `wheel-left' scrolls in the other direction.
|
|
If this variable is non-nil, it inverts the direction of
|
|
horizontal scrolling by tilting the mouse wheel.
|
|
Also see `mouse-wheel-tilt-scroll'."
|
|
:group 'mouse
|
|
:type 'boolean
|
|
:version "26.1")
|
|
|
|
(defun mwheel-event-button (event)
|
|
(let ((x (event-basic-type event)))
|
|
;; Map mouse-wheel events to appropriate buttons
|
|
(if (eq 'mouse-wheel x)
|
|
(let ((amount (car (cdr (cdr (cdr event))))))
|
|
(if (< amount 0)
|
|
mouse-wheel-up-event
|
|
mouse-wheel-down-event))
|
|
x)))
|
|
|
|
(defun mwheel-event-window (event)
|
|
(posn-window (event-start event)))
|
|
|
|
(defvar mwheel-inhibit-click-event-timer nil
|
|
"Timer running while mouse wheel click event is inhibited.")
|
|
|
|
(defun mwheel-inhibit-click-timeout ()
|
|
"Handler for `mwheel-inhibit-click-event-timer'."
|
|
(setq mwheel-inhibit-click-event-timer nil)
|
|
(remove-hook 'pre-command-hook 'mwheel-filter-click-events))
|
|
|
|
(defun mwheel-filter-click-events ()
|
|
"Discard `mouse-wheel-click-event' while scrolling the mouse."
|
|
(if (eq (event-basic-type last-input-event) mouse-wheel-click-event)
|
|
(setq this-command 'ignore)))
|
|
|
|
(defvar mwheel-scroll-up-function 'scroll-up
|
|
"Function that does the job of scrolling upward.")
|
|
|
|
(defvar mwheel-scroll-down-function 'scroll-down
|
|
"Function that does the job of scrolling downward.")
|
|
|
|
(defvar mwheel-scroll-left-function 'scroll-left
|
|
"Function that does the job of scrolling left.")
|
|
|
|
(defvar mwheel-scroll-right-function 'scroll-right
|
|
"Function that does the job of scrolling right.")
|
|
|
|
(defvar mouse-wheel-left-event
|
|
(if (or (featurep 'w32-win) (featurep 'ns-win)
|
|
(featurep 'haiku-win) (featurep 'pgtk-win)
|
|
(featurep 'android-win))
|
|
'wheel-left
|
|
'mouse-6)
|
|
"Event used for scrolling left.")
|
|
|
|
(defvar mouse-wheel-left-alternate-event
|
|
(if (featurep 'xinput2)
|
|
'wheel-left
|
|
(unless (featurep 'x)
|
|
'mouse-6))
|
|
"Alternative wheel left event to consider.")
|
|
|
|
(defvar mouse-wheel-right-event
|
|
(if (or (featurep 'w32-win) (featurep 'ns-win)
|
|
(featurep 'haiku-win) (featurep 'pgtk-win)
|
|
(featurep 'android-win))
|
|
'wheel-right
|
|
'mouse-7)
|
|
"Event used for scrolling right.")
|
|
|
|
(defvar mouse-wheel-right-alternate-event
|
|
(if (featurep 'xinput2)
|
|
'wheel-right
|
|
(unless (featurep 'x)
|
|
'mouse-7))
|
|
"Alternative wheel right event to consider.")
|
|
|
|
(defun mouse-wheel--get-scroll-window (event)
|
|
"Return window for mouse wheel event EVENT.
|
|
If `mouse-wheel-follow-mouse' is non-nil, return the window that
|
|
the mouse pointer is over. Otherwise, return the currently
|
|
active window."
|
|
(or (catch 'found
|
|
(let* ((window (if mouse-wheel-follow-mouse
|
|
(mwheel-event-window event)
|
|
(selected-window)))
|
|
(frame (when (window-live-p window)
|
|
(frame-parameter
|
|
(window-frame window) 'mouse-wheel-frame))))
|
|
(when (frame-live-p frame)
|
|
(let* ((pos (mouse-absolute-pixel-position))
|
|
(pos-x (car pos))
|
|
(pos-y (cdr pos)))
|
|
(walk-window-tree
|
|
(lambda (window-1)
|
|
(let ((edges (window-edges window-1 nil t t)))
|
|
(when (and (<= (nth 0 edges) pos-x)
|
|
(<= pos-x (nth 2 edges))
|
|
(<= (nth 1 edges) pos-y)
|
|
(<= pos-y (nth 3 edges)))
|
|
(throw 'found window-1))))
|
|
frame nil t)))))
|
|
(mwheel-event-window event)))
|
|
|
|
(defun mwheel-scroll (event &optional arg)
|
|
"Scroll up or down according to the EVENT.
|
|
This should be bound only to mouse buttons 4, 5, 6, and 7 on
|
|
non-Windows systems.
|
|
|
|
Optional argument ARG (interactively, prefix numeric argument) controls
|
|
the step of horizontal scrolling.
|
|
|
|
The variable `mouse-wheel-scroll-amount-horizontal' records the last
|
|
value of ARG, and the command uses it in subsequent scrolls."
|
|
(interactive (list last-input-event current-prefix-arg))
|
|
(let* ((selected-window (selected-window))
|
|
(scroll-window (mouse-wheel--get-scroll-window event))
|
|
(old-point
|
|
(and (eq scroll-window selected-window)
|
|
(eq (car-safe transient-mark-mode) 'only)
|
|
(window-point)))
|
|
(mods
|
|
(delq 'click (delq 'double (delq 'triple (event-modifiers event)))))
|
|
(amt (assoc mods mouse-wheel-scroll-amount))
|
|
saw-error)
|
|
(unless (eq scroll-window selected-window)
|
|
;; Mark window to be scrolled for redisplay.
|
|
(select-window scroll-window 'mark-for-redisplay))
|
|
;; Extract the actual amount or find the element that has no modifiers.
|
|
(if amt (setq amt (cdr amt))
|
|
(let ((list-elt mouse-wheel-scroll-amount))
|
|
(while (consp (setq amt (pop list-elt))))))
|
|
(if (floatp amt) (setq amt (1+ (truncate (* amt (window-height))))))
|
|
(when (and mouse-wheel-progressive-speed (numberp amt))
|
|
;; When the double-mouse-N comes in, a mouse-N has been executed already,
|
|
;; So by adding things up we get a squaring up (1, 3, 6, 10, 15, ...).
|
|
(setq amt (* amt (event-click-count event))))
|
|
(when (numberp amt) (setq amt (* amt (event-line-count event))))
|
|
(condition-case nil
|
|
(unwind-protect
|
|
(let ((button (mwheel-event-button event)))
|
|
(cond ((and (eq amt 'hscroll) (memq button (list mouse-wheel-down-event
|
|
mouse-wheel-down-alternate-event)))
|
|
(when (and (natnump arg) (> arg 0))
|
|
(setq mouse-wheel-scroll-amount-horizontal arg))
|
|
(funcall (if mouse-wheel-flip-direction
|
|
mwheel-scroll-left-function
|
|
mwheel-scroll-right-function)
|
|
mouse-wheel-scroll-amount-horizontal))
|
|
((memq button (list mouse-wheel-down-event
|
|
mouse-wheel-down-alternate-event))
|
|
(condition-case nil (funcall mwheel-scroll-down-function amt)
|
|
;; Make sure we do indeed scroll to the beginning of
|
|
;; the buffer.
|
|
(beginning-of-buffer
|
|
(unwind-protect
|
|
(funcall mwheel-scroll-down-function)
|
|
;; If the first scroll succeeded, then some scrolling
|
|
;; is possible: keep scrolling til the beginning but
|
|
;; do not signal an error. For some reason, we have
|
|
;; to do it even if the first scroll signaled an
|
|
;; error, because otherwise the window is recentered
|
|
;; for a reason that escapes me. This problem seems
|
|
;; to only affect scroll-down. --Stef
|
|
(set-window-start (selected-window) (point-min))))))
|
|
((and (eq amt 'hscroll) (memq button (list mouse-wheel-up-event
|
|
mouse-wheel-up-alternate-event)))
|
|
(when (and (natnump arg) (> arg 0))
|
|
(setq mouse-wheel-scroll-amount-horizontal arg))
|
|
(funcall (if mouse-wheel-flip-direction
|
|
mwheel-scroll-right-function
|
|
mwheel-scroll-left-function)
|
|
mouse-wheel-scroll-amount-horizontal))
|
|
((memq button (list mouse-wheel-up-event
|
|
mouse-wheel-up-alternate-event))
|
|
(condition-case nil (funcall mwheel-scroll-up-function amt)
|
|
;; Make sure we do indeed scroll to the end of the buffer.
|
|
(end-of-buffer (while t (funcall mwheel-scroll-up-function)))))
|
|
((memq button (list mouse-wheel-left-event
|
|
mouse-wheel-left-alternate-event)) ; for tilt scroll
|
|
(when mouse-wheel-tilt-scroll
|
|
(funcall (if mouse-wheel-flip-direction
|
|
mwheel-scroll-right-function
|
|
mwheel-scroll-left-function) amt)))
|
|
((memq button (list mouse-wheel-right-event
|
|
mouse-wheel-right-alternate-event)) ; for tilt scroll
|
|
(when mouse-wheel-tilt-scroll
|
|
(funcall (if mouse-wheel-flip-direction
|
|
mwheel-scroll-left-function
|
|
mwheel-scroll-right-function) amt)))
|
|
(t (error "Bad binding in mwheel-scroll"))))
|
|
(if (eq scroll-window selected-window)
|
|
;; If there is a temporarily active region, deactivate it if
|
|
;; scrolling moved point.
|
|
(when (and old-point (/= old-point (window-point)))
|
|
;; Call `deactivate-mark' at the original position, so that
|
|
;; the original region is saved to the X selection.
|
|
(let ((new-point (window-point)))
|
|
(goto-char old-point)
|
|
(deactivate-mark)
|
|
(goto-char new-point)))
|
|
(select-window selected-window t)))
|
|
;; Do not ding at buffer limits. Show a message instead.
|
|
(beginning-of-buffer
|
|
(message (error-message-string '(beginning-of-buffer)))
|
|
(setq saw-error t))
|
|
(end-of-buffer
|
|
(message (error-message-string '(end-of-buffer)))
|
|
(setq saw-error t)))
|
|
|
|
(when (and (not saw-error)
|
|
mouse-wheel-click-event mouse-wheel-inhibit-click-time)
|
|
(if mwheel-inhibit-click-event-timer
|
|
(cancel-timer mwheel-inhibit-click-event-timer)
|
|
(add-hook 'pre-command-hook 'mwheel-filter-click-events))
|
|
(setq mwheel-inhibit-click-event-timer
|
|
(run-with-timer mouse-wheel-inhibit-click-time nil
|
|
'mwheel-inhibit-click-timeout)))))
|
|
|
|
(put 'mwheel-scroll 'scroll-command t)
|
|
|
|
(defun mouse-wheel-text-scale (event)
|
|
"Adjust font size of the default face according to EVENT.
|
|
See also `text-scale-adjust'."
|
|
(interactive (list last-input-event))
|
|
(let ((selected-window (selected-window))
|
|
(scroll-window (mouse-wheel--get-scroll-window event))
|
|
(button (mwheel-event-button event)))
|
|
(select-window scroll-window 'mark-for-redisplay)
|
|
(unwind-protect
|
|
(cond ((memq button (list mouse-wheel-down-event
|
|
mouse-wheel-down-alternate-event))
|
|
(text-scale-increase 1))
|
|
((memq button (list mouse-wheel-up-event
|
|
mouse-wheel-up-alternate-event))
|
|
(text-scale-decrease 1)))
|
|
(select-window selected-window))))
|
|
|
|
(declare-function global-text-scale-adjust "face-remap.el" (increment))
|
|
(defun mouse-wheel-global-text-scale (event)
|
|
"Increase or decrease the global font size according to the EVENT.
|
|
This invokes `global-text-scale-adjust', which see."
|
|
(interactive (list last-input-event))
|
|
(let ((button (mwheel-event-button event)))
|
|
(unwind-protect
|
|
(cond ((memq button (list mouse-wheel-down-event
|
|
mouse-wheel-down-alternate-event))
|
|
(global-text-scale-adjust 1))
|
|
((memq button (list mouse-wheel-up-event
|
|
mouse-wheel-up-alternate-event))
|
|
(global-text-scale-adjust -1))))))
|
|
|
|
(defun mouse-wheel--add-binding (key fun)
|
|
"Bind mouse wheel button KEY to function FUN.
|
|
Save it for later removal by `mouse-wheel--remove-bindings'."
|
|
(global-set-key key fun)
|
|
(push (cons key fun) mouse-wheel--installed-bindings-alist))
|
|
|
|
(defun mouse-wheel--remove-bindings ()
|
|
"Remove all mouse wheel key bindings.
|
|
This is a helper function for `mouse-wheel-mode'."
|
|
(dolist (binding mouse-wheel--installed-bindings-alist)
|
|
(let ((key (car binding))
|
|
(fun (cdr binding)))
|
|
(when (eq (lookup-key (current-global-map) key) fun)
|
|
(global-unset-key key))))
|
|
(setq mouse-wheel--installed-bindings-alist nil))
|
|
|
|
(defun mouse-wheel--create-scroll-keys (binding event)
|
|
"Return list of key vectors for BINDING and EVENT.
|
|
BINDING is an element in `mouse-wheel-scroll-amount'. EVENT is
|
|
an event used for scrolling, such as `mouse-wheel-down-event'."
|
|
(let ((prefixes (list 'left-margin 'right-margin
|
|
'left-fringe 'right-fringe
|
|
'vertical-scroll-bar 'horizontal-scroll-bar
|
|
'mode-line 'header-line)))
|
|
(if (consp binding)
|
|
;; With modifiers, bind only the buffer area (no prefix).
|
|
(list `[(,@(car binding) ,event)])
|
|
;; No modifier: bind also some non-buffer areas of the screen.
|
|
(cons (vector event)
|
|
(mapcar (lambda (prefix) (vector prefix event)) prefixes)))))
|
|
|
|
;;;###autoload
|
|
(define-minor-mode mouse-wheel-mode
|
|
"Toggle mouse wheel support (Mouse Wheel mode)."
|
|
:init-value t
|
|
:global t
|
|
:group 'mouse
|
|
;; Remove previous bindings, if any.
|
|
(mouse-wheel--remove-bindings)
|
|
;; Setup bindings as needed.
|
|
(when mouse-wheel-mode
|
|
(mouse-wheel--setup-bindings)))
|
|
|
|
(defun mouse-wheel--setup-bindings ()
|
|
(dolist (binding mouse-wheel-scroll-amount)
|
|
(cond
|
|
;; Bindings for changing font size.
|
|
((and (consp binding) (eq (cdr binding) 'text-scale))
|
|
(dolist (event (list mouse-wheel-down-event mouse-wheel-up-event
|
|
mouse-wheel-down-alternate-event
|
|
mouse-wheel-up-alternate-event))
|
|
(when event
|
|
(mouse-wheel--add-binding `[,(append (car binding) (list event))]
|
|
'mouse-wheel-text-scale))))
|
|
((and (consp binding) (eq (cdr binding) 'global-text-scale))
|
|
(dolist (event (list mouse-wheel-down-event mouse-wheel-up-event
|
|
mouse-wheel-down-alternate-event
|
|
mouse-wheel-up-alternate-event))
|
|
(when event
|
|
(mouse-wheel--add-binding `[,(append (car binding) (list event))]
|
|
'mouse-wheel-global-text-scale))))
|
|
;; Bindings for scrolling.
|
|
(t
|
|
(dolist (event (list mouse-wheel-down-event mouse-wheel-up-event
|
|
mouse-wheel-left-event mouse-wheel-right-event
|
|
mouse-wheel-down-alternate-event
|
|
mouse-wheel-up-alternate-event
|
|
mouse-wheel-left-alternate-event
|
|
mouse-wheel-right-alternate-event))
|
|
(when event
|
|
(dolist (key (mouse-wheel--create-scroll-keys binding event))
|
|
(mouse-wheel--add-binding key 'mwheel-scroll))))))))
|
|
|
|
(when mouse-wheel-mode
|
|
(mouse-wheel--setup-bindings))
|
|
|
|
;;; Obsolete.
|
|
|
|
;;; Compatibility entry point
|
|
;; preloaded ;;;###autoload
|
|
(defun mwheel-install (&optional uninstall)
|
|
"Enable mouse wheel support."
|
|
(declare (obsolete mouse-wheel-mode "27.1"))
|
|
(mouse-wheel-mode (if uninstall -1 1)))
|
|
|
|
(defvar mwheel-installed-bindings nil)
|
|
(make-obsolete-variable 'mwheel-installed-bindings nil "28.1")
|
|
|
|
(defvar mwheel-installed-text-scale-bindings nil)
|
|
(make-obsolete-variable 'mwheel-installed-text-scale-bindings nil "28.1")
|
|
|
|
(provide 'mwheel)
|
|
|
|
;;; mwheel.el ends here
|