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posframe.el
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posframe.el
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;;; posframe.el --- Pop a posframe (just a frame) at point -*- lexical-binding:t -*-
;; Copyright (C) 2018-2020 Free Software Foundation, Inc.
;; Author: Feng Shu <[email protected]>
;; Maintainer: Feng Shu <[email protected]>
;; URL: https://github.com/tumashu/posframe
;; Version: 1.4.4
;; Keywords: convenience, tooltip
;; Package-Requires: ((emacs "26.1"))
;; This file is not 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 <http://www.gnu.org/licenses/>.
;;; Commentary:
;; * Posframe README :README:
;; Posframe can pop up a frame at point, this *posframe* is a
;; child-frame connected to its root window's buffer.
;; The main advantages are:
;; 1. It is fast enough for daily usage :-)
;; 2. It works well with CJK languages.
;; More info please see: README.org
;;; Code:
;; * posframe's code :CODE:
(require 'cl-lib)
(defgroup posframe nil
"Pop a posframe (just a frame) at point."
:group 'lisp
:prefix "posframe-")
(defcustom posframe-inhibit-double-buffering nil
"Set the posframe's frame-parameter: inhibit-double-buffering."
:group 'posframe
:type 'boolean)
(defcustom posframe-mouse-banish-function #'posframe-mouse-banish-default
"The function used to banish mouse.
Function `posframe-mouse-banish-default' will work well in most
case, but suggest use function `posframe-mouse-banish-simple' or
custom function for EXWM users."
:type 'function)
(defvar-local posframe--frame nil
"Record posframe's frame.")
(defvar-local posframe--last-posframe-pixel-position nil
"Record the last pixel position of posframe's frame.")
(defvar-local posframe--last-posframe-size nil
"Record the last size of posframe's frame.")
(defvar-local posframe--last-posframe-displayed-size nil
"Record the last displayed size of posframe's frame.")
(defvar-local posframe--last-parent-frame-size nil
"Record the last size of posframe's parent-frame.")
(defvar-local posframe--last-poshandler-info nil
"Record the last poshandler info.")
(defvar-local posframe--last-font-height-info nil
"Record the last font height info.")
(defvar-local posframe--last-args nil
"Record the last arguments of `posframe--create-posframe'.
If these args have changed, posframe will recreate its
frame.")
(defvar-local posframe--timeout-timer nil
"Record the timer to deal with timeout argument of `posframe-show'.")
(defvar-local posframe--refresh-timer nil
"Record the timer to deal with refresh argument of `posframe-show'.")
(defvar-local posframe--initialized-p nil
"Record initialize status of `posframe-show'.")
(defvar-local posframe--accept-focus nil
"Record accept focus status of `posframe-show'.")
(defvar posframe-hidehandler-timer nil
"Timer used by hidehandler function.")
;; Avoid compilation warnings on Emacs < 27.
(defvar x-gtk-resize-child-frames)
(defvar posframe-gtk-resize-child-frames
(when (and
(> emacs-major-version 26)
(string-match-p "GTK3" system-configuration-features)
(let ((value (or (getenv "XDG_CURRENT_DESKTOP") (getenv "DESKTOP_SESSION"))))
(and (stringp value)
;; It can be "ubuntu:GNOME".
(string-match-p "GNOME" value))))
;; Not future-proof, but we can use it now.
'resize-mode)
"Value to bind `x-gtk-resize-child-frames' to.
The value `resize-mode' only has effect on new child frames, so
if you change it, call `posframe-delete-all' for it to take
effect.")
;;;###autoload
(defun posframe-workable-p ()
"Test posframe workable status."
(and (>= emacs-major-version 26)
(not (or noninteractive
emacs-basic-display
(not (display-graphic-p))
(eq (frame-parameter (selected-frame) 'minibuffer) 'only)))))
;;;###autoload
(cl-defun posframe-show (buffer-or-name
&key
string
position
poshandler
poshandler-extra-info
width
height
max-width
max-height
min-width
min-height
x-pixel-offset
y-pixel-offset
left-fringe
right-fringe
border-width
border-color
internal-border-width
internal-border-color
font
cursor
window-point
foreground-color
background-color
respect-header-line
respect-mode-line
initialize
no-properties
keep-ratio
lines-truncate
override-parameters
timeout
refresh
accept-focus
hidehandler
refposhandler
&allow-other-keys)
"Pop up a posframe to show STRING at POSITION.
(1) POSITION
POSITION can be:
1. An integer, meaning point position.
2. A cons of two integers, meaning absolute X and Y coordinates.
3. Other type, in which case the corresponding POSHANDLER should be
provided.
(2) POSHANDLER
POSHANDLER is a function of one argument returning an actual
position. Its argument is a plist of the following form:
(:position xxx
:poshandler xxx
:font-height xxx
:font-width xxx
:posframe xxx
:posframe-width xxx
:posframe-height xxx
:posframe-buffer xxx
:parent-frame xxx
:parent-window-start xxx
:parent-window-end xxx
:parent-window-left xxx
:parent-window-top xxx
:parent-frame-width xxx
:parent-frame-height xxx
:parent-window xxx
:parent-window-width xxx
:parent-window-height xxx
:mouse-x xxx
;mouse-y xxx
:minibuffer-height xxx
:mode-line-height xxx
:header-line-height xxx
:tab-line-height xxx
:x-pixel-offset xxx
:y-pixel-offset xxx)
By default, poshandler is auto-selected based on the type of POSITION,
but the selection can be overridden using the POSHANDLER argument.
The builtin poshandler functions are listed below:
1. `posframe-poshandler-frame-center'
2. `posframe-poshandler-frame-top-center'
3. `posframe-poshandler-frame-top-left-corner'
4. `posframe-poshandler-frame-top-right-corner'
5. `posframe-poshandler-frame-top-left-or-right-other-corner'
6. `posframe-poshandler-frame-bottom-center'
7. `posframe-poshandler-frame-bottom-left-corner'
8. `posframe-poshandler-frame-bottom-right-corner'
9. `posframe-poshandler-window-center'
10. `posframe-poshandler-window-top-center'
11. `posframe-poshandler-window-top-left-corner'
12. `posframe-poshandler-window-top-right-corner'
13. `posframe-poshandler-window-bottom-center'
14. `posframe-poshandler-window-bottom-left-corner'
15. `posframe-poshandler-window-bottom-right-corner'
16. `posframe-poshandler-point-top-left-corner'
17. `posframe-poshandler-point-bottom-left-corner'
18. `posframe-poshandler-point-bottom-left-corner-upward'
19. `posframe-poshandler-point-window-center'
20. `posframe-poshandler-point-frame-center'
(3) POSHANDLER-EXTRA-INFO
POSHANDLER-EXTRA-INFO is a plist, which will prepend to the
argument of poshandler function: `info', it will *OVERRIDE* the
exist key in `info'.
(4) BUFFER-OR-NAME
This posframe's buffer is BUFFER-OR-NAME, which can be a buffer
or a name of a (possibly nonexistent) buffer.
buffer name can prefix with space, for example \" *mybuffer*\", so
the buffer name will hide for ibuffer and `list-buffers'.
(5) NO-PROPERTIES
If NO-PROPERTIES is non-nil, The STRING's properties will
be removed before being shown in posframe.
(6) HEIGHT, MAX-HEIGHT, MIN-HEIGHT, WIDTH, MAX-WIDTH and MIN-WIDTH
These arguments are specified in the canonical character width
and height of posframe, more details can be found in docstring of
function `fit-frame-to-buffer',
(7) LEFT-FRINGE and RIGHT-FRINGE
If LEFT-FRINGE or RIGHT-FRINGE is a number, left fringe or
right fringe with be shown with the specified width.
(8) BORDER-WIDTH, BORDER-COLOR, INTERNAL-BORDER-WIDTH and INTERNAL-BORDER-COLOR
By default, posframe shows no borders, but users can specify
borders by setting BORDER-WIDTH to a positive number. Border
color can be specified by BORDER-COLOR.
INTERNAL-BORDER-WIDTH and INTERNAL-BORDER-COLOR are same as
BORDER-WIDTH and BORDER-COLOR, but do not suggest to use for the
reason:
Add distinct controls for child frames' borders (Bug#45620)
http://git.savannah.gnu.org/cgit/emacs.git/commit/?id=ff7b1a133bfa7f2614650f8551824ffaef13fadc
(9) FONT, FOREGROUND-COLOR and BACKGROUND-COLOR
Posframe's font as well as foreground and background colors are
derived from the current frame by default, but can be overridden
using the FONT, FOREGROUND-COLOR and BACKGROUND-COLOR arguments,
respectively.
(10) CURSOR and WINDOW-POINT
By default, cursor is not showed in posframe, user can let cursor
showed with this argument help by set its value to a `cursor-type'.
When cursor need to be showed in posframe, user may need to set
WINDOW-POINT to the point of BUFFER, which can let cursor showed
at this point.
(11) RESPECT-HEADER-LINE and RESPECT-MODE-LINE
By default, posframe will display no header-line, mode-line and
tab-line. In case a header-line, mode-line or tab-line is
desired, users can set RESPECT-HEADER-LINE and RESPECT-MODE-LINE
to t.
(12) INITIALIZE
INITIALIZE is a function with no argument. It will run when
posframe buffer is first selected with `with-current-buffer'
in `posframe-show', and only run once (for performance reasons).
(13) LINES-TRUNCATE
If LINES-TRUNCATE is non-nil, then lines will truncate in the
posframe instead of wrap.
(14) OVERRIDE-PARAMETERS
OVERRIDE-PARAMETERS is very powful, *all* the valid frame parameters
used by posframe's frame can be overridden by it.
NOTE: some `posframe-show' arguments are not frame parameters, so they
can not be overrided by this argument.
(15) TIMEOUT
TIMEOUT can specify the number of seconds after which the posframe
will auto-hide.
(15) REFRESH
If REFRESH is a number, posframe's frame-size will be re-adjusted
every REFRESH seconds.
(17) ACCEPT-FOCUS
When ACCEPT-FOCUS is non-nil, posframe will accept focus.
be careful, you may face some bugs when set it to non-nil.
(18) HIDEHANDLER
HIDEHANDLER is a function, when it return t, posframe will be
hide, this function has a plist argument:
(:posframe-buffer xxx
:posframe-parent-buffer xxx)
The builtin hidehandler functions are listed below:
1. `posframe-hidehandler-when-buffer-switch'
(19) REFPOSHANDLER
REFPOSHANDLER is a function, a reference position (most is
top-left of current frame) will be returned when call this
function.
when it is nil or it return nil, child-frame feature will be used
and reference position will be deal with in Emacs.
The user case I know at the moment is let ivy-posframe work well
in EXWM environment (let posframe show on the other application
window).
DO NOT USE UNLESS NECESSARY!!!
An example parent frame poshandler function is:
1. `posframe-refposhandler-xwininfo'
(19) Others
You can use `posframe-delete-all' to delete all posframes."
(let* ((position (or position (point)))
(max-width (if (numberp max-width)
(min max-width (frame-width))
(frame-width)))
(max-height (if (numberp max-height)
(min max-height (frame-height))
(frame-height)))
(min-width (min (or min-width 1) max-width))
(min-height (min (or min-height 1) max-height))
(width (when width
(min (max width min-width) max-width)))
(height (when height
(min (max height min-height) max-height)))
(x-pixel-offset (or x-pixel-offset 0))
(y-pixel-offset (or y-pixel-offset 0))
(window-point (or window-point 0))
;;-----------------------------------------------------
(buffer (get-buffer-create buffer-or-name))
(parent-window (selected-window))
(parent-window-start (window-start parent-window))
(parent-window-end (window-end parent-window))
(parent-window-top (window-pixel-top parent-window))
(parent-window-left (window-pixel-left parent-window))
(parent-window-width (window-pixel-width parent-window))
(parent-window-height (window-pixel-height parent-window))
(parent-frame (window-frame parent-window))
(parent-frame-width (frame-pixel-width parent-frame))
(parent-frame-height (frame-pixel-height parent-frame))
(ref-position
(when (functionp refposhandler)
(ignore-errors
(funcall refposhandler parent-frame))))
(font-width (default-font-width))
(font-height (with-current-buffer (window-buffer parent-window)
(posframe--get-font-height position)))
(mode-line-height (window-mode-line-height
(and (window-minibuffer-p)
(ignore-errors (window-in-direction 'above)))))
(minibuffer-height (window-pixel-height (minibuffer-window)))
(header-line-height (window-header-line-height parent-window))
(tab-line-height (if (functionp 'window-tab-line-height)
(window-tab-line-height)
0))
(mouse-position (cdr (mouse-pixel-position)))
(frame-resize-pixelwise t)
posframe)
(with-current-buffer buffer
;; Initialize
(unless posframe--initialized-p
(let ((func initialize))
(when (functionp func)
(funcall func)
(setq posframe--initialized-p t))))
;; Create posframe
(setq posframe
(posframe--create-posframe
buffer
:position position
:font font
:cursor cursor
:parent-frame
(unless ref-position
parent-frame)
:left-fringe left-fringe
:right-fringe right-fringe
:border-width border-width
:border-color border-color
:internal-border-width internal-border-width
:internal-border-color internal-border-color
:foreground-color foreground-color
:background-color background-color
:keep-ratio keep-ratio
:lines-truncate lines-truncate
:respect-header-line respect-header-line
:respect-mode-line respect-mode-line
:override-parameters override-parameters
:accept-focus accept-focus))
;; Insert string into the posframe buffer
(posframe--insert-string string no-properties)
(let ((size-info
(list :posframe posframe
:width width
:height height
:max-width max-width
:max-height max-height
:min-width min-width
:min-height min-height)))
;; Set posframe's size
(posframe--set-frame-size size-info)
;; Re-adjust posframe's size when buffer's content has changed.
(posframe--run-refresh-timer refresh size-info))
;; Get new position of posframe.
(setq position
(posframe-run-poshandler
;; All poshandlers will get info from this plist.
`(,@poshandler-extra-info
,@(list :position position
:poshandler poshandler
:font-height font-height
:font-width font-width
:posframe posframe
:posframe-width (frame-pixel-width posframe)
:posframe-height (frame-pixel-height posframe)
:posframe-buffer buffer
:parent-frame parent-frame
:parent-frame-width parent-frame-width
:parent-frame-height parent-frame-height
:ref-position ref-position
:parent-window parent-window
:parent-window-start parent-window-start
:parent-window-end parent-window-end
:parent-window-top parent-window-top
:parent-window-left parent-window-left
:parent-window-width parent-window-width
:parent-window-height parent-window-height
:mouse-x (car mouse-position)
:mouse-y (cdr mouse-position)
:mode-line-height mode-line-height
:minibuffer-height minibuffer-height
:header-line-height header-line-height
:tab-line-height tab-line-height
:x-pixel-offset x-pixel-offset
:y-pixel-offset y-pixel-offset))))
;; Move posframe
(posframe--set-frame-position
posframe position parent-frame-width parent-frame-height)
;; Delay hide posframe when timeout is a number.
(posframe--run-timeout-timer posframe timeout)
;; Make sure not hide buffer's content for scroll down.
(let ((window (frame-root-window posframe--frame)))
(when (window-live-p window)
(set-window-point window window-point)))
;; Hide posframe when switch buffer
(let* ((parent-buffer (window-buffer parent-window))
(parent-buffer-name (buffer-name parent-buffer)))
(set-frame-parameter posframe--frame 'posframe-hidehandler hidehandler)
(set-frame-parameter posframe--frame 'posframe-parent-buffer
(cons parent-buffer-name parent-buffer)))
;; Mouse banish
(funcall
posframe-mouse-banish-function
(list :parent-frame parent-frame
:mouse-x (when (car mouse-position)
(+ (or (car ref-position) 0)
(car mouse-position)))
:mouse-y (when (cdr mouse-position)
(+ (or (cdr ref-position) 0)
(cdr mouse-position)))
:posframe-x
(if (>= (car position) 0)
(car position)
(- (frame-pixel-width parent-frame)
(frame-pixel-width posframe)))
:posframe-y
(if (>= (cdr position) 0)
(cdr position)
(- (frame-pixel-height parent-frame)
(frame-pixel-height posframe)))
:posframe-width (frame-pixel-width posframe)
:posframe-height (frame-pixel-height posframe)
:parent-frame-width parent-frame-width
:parent-frame-height parent-frame-height))
;; Return posframe
posframe)))
(defun posframe--get-font-height (position)
"Get the font's height at POSITION."
(if (eq position (car posframe--last-font-height-info))
(cdr posframe--last-font-height-info)
(let* ((font (when (and (integerp position)
(not (= position 1)))
(font-at (if (>= position (point-max))
(- (point-max) 1)
position))))
(height (when (integerp position)
(if (or (= position 1) (not (fontp font)))
(default-line-height)
(aref (font-info font) 3)))))
(setq posframe--last-font-height-info
(cons position height))
height)))
(cl-defun posframe--create-posframe (buffer-or-name
&key
position
parent-frame
foreground-color
background-color
left-fringe
right-fringe
border-width
border-color
internal-border-width
internal-border-color
font
cursor
keep-ratio
lines-truncate
override-parameters
respect-header-line
respect-mode-line
accept-focus)
"Create and return a posframe child frame.
This posframe's buffer is BUFFER-OR-NAME.
The below optional arguments are similar to `posframe-show''s:
PARENT-FRAME, FOREGROUND-COLOR, BACKGROUND-COLOR, LEFT-FRINGE,
RIGHT-FRINGE, BORDER-WIDTH, BORDER-COLOR, INTERNAL-BORDER-WIDTH,
INTERNAL-BORDER-COLOR, FONT, KEEP-RATIO, LINES-TRUNCATE,
OVERRIDE-PARAMETERS, RESPECT-HEADER-LINE, RESPECT-MODE-LINE,
ACCEPT-FOCUS."
(let ((left-fringe (or left-fringe 0))
(right-fringe (or right-fringe 0))
;; See emacs.git: Add distinct controls for child frames' borders (Bug#45620)
;; http://git.savannah.gnu.org/cgit/emacs.git/commit/?id=ff7b1a133bfa7f2614650f8551824ffaef13fadc
(border-width (or border-width internal-border-width 0))
(border-color (or border-color internal-border-color))
(buffer (get-buffer-create buffer-or-name))
(after-make-frame-functions nil)
(x-gtk-resize-child-frames posframe-gtk-resize-child-frames)
(args (list "args"
foreground-color
background-color
right-fringe
left-fringe
border-width
border-color
internal-border-width
internal-border-color
font
keep-ratio
override-parameters
respect-header-line
respect-mode-line
accept-focus)))
(with-current-buffer buffer
;; Many variables take effect after call `set-window-buffer'
(setq-local display-line-numbers nil)
(setq-local frame-title-format "")
(setq-local left-margin-width nil)
(setq-local right-margin-width nil)
(setq-local left-fringe-width nil)
(setq-local right-fringe-width nil)
(setq-local fringes-outside-margins 0)
(setq-local fringe-indicator-alist nil)
;; Need to use `lines-truncate' as our keyword variable instead
;; of `truncate-lines' so we don't shadow the variable that we
;; are trying to set.
(setq-local truncate-lines lines-truncate)
(setq-local show-trailing-whitespace nil)
(setq-local posframe--accept-focus accept-focus)
(unless respect-mode-line
(setq-local mode-line-format nil))
(unless respect-header-line
(setq-local header-line-format nil))
(if cursor
(progn
(setq-local cursor-type cursor)
(setq-local cursor-in-non-selected-windows cursor))
(setq-local cursor-type nil)
(setq-local cursor-in-non-selected-windows nil))
;; Find existing posframe: buffer-local variables used by
;; posframe can be cleaned by other packages, so we should find
;; existing posframe first if possible.
(unless (or posframe--frame posframe--last-args)
(setq-local posframe--frame
(posframe--find-existing-posframe buffer args))
(setq-local posframe--last-args args))
;; Create child-frame
(unless (and posframe--frame
(frame-live-p posframe--frame)
;; For speed reason, posframe will reuse
;; existing frame at possible, but when
;; user change args, recreating frame
;; is needed.
(equal posframe--last-args args))
(posframe-delete-frame buffer)
(setq-local posframe--last-args args)
(setq-local posframe--last-posframe-pixel-position nil)
(setq-local posframe--last-posframe-size nil)
(setq-local posframe--frame
(make-frame
`(,@override-parameters
,(when foreground-color
(cons 'foreground-color foreground-color))
,(when background-color
(cons 'background-color background-color))
(title . "posframe")
(parent-frame . ,parent-frame)
(keep-ratio ,keep-ratio)
(posframe-buffer . ,(cons (buffer-name buffer)
buffer))
(fullscreen . nil)
(no-accept-focus . ,(not accept-focus))
(min-width . 0)
(min-height . 0)
(border-width . 0)
(internal-border-width . ,border-width)
(child-frame-border-width . ,border-width)
(vertical-scroll-bars . nil)
(horizontal-scroll-bars . nil)
(left-fringe . ,left-fringe)
(right-fringe . ,right-fringe)
(menu-bar-lines . 0)
(tool-bar-lines . 0)
(tab-bar-lines . 0)
(line-spacing . 0)
(unsplittable . t)
(no-other-frame . t)
(undecorated . t)
(visibility . nil)
(cursor-type . nil)
(minibuffer . ,(minibuffer-window parent-frame))
(left . ,(if (consp position) (car position) 0))
(top . ,(if (consp position) (cdr position) 0))
(width . 1)
(height . 1)
(no-special-glyphs . t)
(skip-taskbar . t)
(inhibit-double-buffering . ,posframe-inhibit-double-buffering)
;; Do not save child-frame when use desktop.el
(desktop-dont-save . t))))
(set-frame-parameter posframe--frame 'last-args args)
(set-frame-parameter
posframe--frame 'font
(or font (face-attribute 'default :font parent-frame)))
(when border-color
(if parent-frame
(set-face-background
(if (facep 'child-frame-border)
'child-frame-border
'internal-border)
border-color posframe--frame)
;; NOTE: when use refposhander feature, parent-frame will be
;; nil, we should use internal-border instead.
(set-face-background
'internal-border
border-color posframe--frame))
;; HACK: Set face background after border color, otherwise the
;; border is not updated (BUG!).
(when (version< emacs-version "28.0")
(set-frame-parameter
posframe--frame 'background-color
(or background-color (face-attribute 'default :background)))))
(let ((posframe-window (frame-root-window posframe--frame)))
;; This method is more stable than 'setq mode/header-line-format nil'
(unless respect-mode-line
(set-window-parameter posframe-window 'mode-line-format 'none))
(unless respect-header-line
(set-window-parameter posframe-window 'header-line-format 'none))
(set-window-buffer posframe-window buffer)
;; When the buffer of posframe is killed, the child-frame of
;; this posframe will be deleted too.
(set-window-dedicated-p posframe-window t)))
;; Remove tab-bar always.
;; NOTE: if we do not test the value of frame parameter
;; 'tab-bar-lines before set it, posframe will flicker when
;; scroll.
(unless (equal (frame-parameter posframe--frame 'tab-bar-lines) 0)
(set-frame-parameter posframe--frame 'tab-bar-lines 0))
(when (version< "27.0" emacs-version)
(setq-local tab-line-format nil))
;; If user set 'parent-frame to nil after run posframe-show.
;; for cache reason, next call to posframe-show will be affected.
;; so we should force set parent-frame again in this place.
(set-frame-parameter posframe--frame 'parent-frame parent-frame)
posframe--frame)))
(defun posframe--find-existing-posframe (buffer &optional last-args)
"Find existing posframe with BUFFER and LAST-ARGS."
(let ((posframe
(cl-find-if
(lambda (frame)
(let* ((buffer-info (frame-parameter frame 'posframe-buffer))
(buffer-equal-p
(or (equal (buffer-name buffer) (car buffer-info))
(equal buffer (cdr buffer-info)))))
(if last-args
(and buffer-equal-p
(equal last-args (frame-parameter frame 'last-args)))
buffer-equal-p)))
(frame-list))))
(when posframe
(set-frame-parameter posframe 'existing-posframe t))
posframe))
(defun posframe-delete-frame (buffer-or-name)
"Delete posframe pertaining to BUFFER-OR-NAME.
BUFFER-OR-NAME can be a buffer or a buffer name."
(let* ((buffer (get-buffer buffer-or-name))
(posframe (when buffer
(posframe--find-existing-posframe buffer)))
;; NOTE: `delete-frame' runs ‘delete-frame-functions’ before
;; actually deleting the frame, unless the frame is a
;; tooltip, posframe is a child-frame, but its function like
;; a tooltip.
(delete-frame-functions nil))
(when posframe
(when (buffer-live-p buffer)
(with-current-buffer buffer
(dolist (timer '(posframe--refresh-timer
posframe--timeout-timer))
(when (timerp timer)
(cancel-timer timer)))))
(delete-frame posframe))))
(defun posframe--insert-string (string no-properties)
"Insert STRING to current buffer.
If NO-PROPERTIES is non-nil, all properties of STRING
will be removed."
(when (and string (stringp string))
(remove-text-properties
0 (length string) '(read-only t) string)
(let ((str (if no-properties
(substring-no-properties string)
string)))
(erase-buffer)
(insert str))))
(defun posframe--set-frame-size (size-info)
"Set POSFRAME's size based on SIZE-INFO."
(let ((posframe (plist-get size-info :posframe))
(width (plist-get size-info :width))
(height (plist-get size-info :height))
(max-width (plist-get size-info :max-width))
(max-height (plist-get size-info :max-height))
(min-width (plist-get size-info :min-width))
(min-height (plist-get size-info :min-height)))
(when height (set-frame-height posframe height))
(when width (set-frame-width posframe width))
(unless (and height width)
(posframe--fit-frame-to-buffer
posframe max-height min-height max-width min-width
(cond (width 'vertically)
(height 'horizontally))))
(setq-local posframe--last-posframe-size size-info)))
(defun posframe--fit-frame-to-buffer (posframe max-height min-height max-width min-width only)
"POSFRAME version of function `fit-frame-to-buffer'.
Arguments HEIGHT, MAX-HEIGHT, MIN-HEIGHT, WIDTH, MAX-WIDTH,
MIN-WIDTH and ONLY are similar function `fit-frame-to-buffer''s."
;; This only has effect if the user set the latter var to `hide'.
(let ((x-gtk-resize-child-frames posframe-gtk-resize-child-frames))
;; More info: Don't skip empty lines when fitting mini frame to buffer (Bug#44080)
;; http://git.savannah.gnu.org/cgit/emacs.git/commit/?id=e0de9f3295b4c46cb7198ec0b9634809d7b7a36d
(if (functionp 'fit-frame-to-buffer-1)
(fit-frame-to-buffer-1
posframe max-height min-height max-width min-width only nil nil)
(fit-frame-to-buffer
posframe max-height min-height max-width min-width only))))
(defun posframe--run-refresh-timer (repeat size-info)
"Refresh POSFRAME every REPEAT seconds.
It will set POSFRAME's size by SIZE-INFO."
(let ((posframe (plist-get size-info :posframe))
(width (plist-get size-info :width))
(height (plist-get size-info :height)))
(when (and (numberp repeat) (> repeat 0))
(unless (and width height)
(when (timerp posframe--refresh-timer)
(cancel-timer posframe--refresh-timer))
(setq-local posframe--refresh-timer
(run-with-timer
nil repeat
(lambda (size-info)
(let ((frame-resize-pixelwise t))
(when (and posframe (frame-live-p posframe))
(posframe--set-frame-size size-info))))
size-info))))))
;; Posframe's position handler
(defun posframe-run-poshandler (info)
"Run posframe's position handler.
the structure of INFO can be found in docstring
of `posframe-show'."
(if (equal info posframe--last-poshandler-info)
posframe--last-posframe-pixel-position
(setq posframe--last-poshandler-info info)
(let* ((ref-position (plist-get info :ref-position))
(poshandler (posframe--get-valid-poshandler info))
(position (funcall poshandler info)))
(if (not ref-position)
position
(posframe--calculate-new-position
info position ref-position)))))
(defun posframe--get-valid-poshandler (info)
"Get valid poshandler function with the help of INFO."
(or (plist-get info :poshandler)
(let ((position (plist-get info :position)))
(cond ((integerp position)
#'posframe-poshandler-point-bottom-left-corner)
((and (consp position)
(integerp (car position))
(integerp (cdr position)))
#'posframe-poshandler-absolute-x-y)
(t (error "Posframe: have no valid poshandler"))))))
(defun posframe--calculate-new-position (info position ref-position)
"Calculate new position according to INFO, POSITION and REF-POSITION."
(let* ((parent-frame-width (plist-get info :parent-frame-width))
(parent-frame-height (plist-get info :parent-frame-height))
(posframe-width (plist-get info :posframe-width))
(posframe-height (plist-get info :posframe-height))
(ref-x (or (car ref-position) 0))
(ref-y (or (cdr ref-position) 0))
(x (car position))
(y (cdr position)))
(when (< x 0)
(setq x (- (+ x parent-frame-width) posframe-width)))
(when (< y 0)
(setq y (- (+ y parent-frame-height) posframe-height)))
(cons (+ ref-x x)
(+ ref-y y))))
(defun posframe--set-frame-position (posframe position
parent-frame-width
parent-frame-height)
"Move POSFRAME to POSITION.
This need PARENT-FRAME-WIDTH and PARENT-FRAME-HEIGHT"
(unless (and (equal position posframe--last-posframe-pixel-position)
;; When working frame's size change, re-posit
;; the posframe.
(equal posframe--last-parent-frame-size
(cons parent-frame-width parent-frame-height))
(equal posframe--last-posframe-displayed-size
(cons (frame-pixel-width posframe)
(frame-pixel-height posframe))))
(set-frame-position posframe (car position) (cdr position))
(setq-local posframe--last-posframe-pixel-position position)
(setq-local posframe--last-parent-frame-size
(cons parent-frame-width parent-frame-height))
(setq-local posframe--last-posframe-displayed-size
(cons (frame-pixel-width posframe)
(frame-pixel-height posframe))))
(posframe--make-frame-visible posframe))
(defun posframe--make-frame-visible (posframe)
"Let POSFRAME visible and redraw it when needed."
(unless (frame-visible-p posframe)
(make-frame-visible posframe)
(when (posframe--posframe-need-redraw-p posframe)
(redraw-frame posframe))))
(defun posframe--posframe-need-redraw-p (posframe)
"Test POSFRAME need to redraw or not."
;; When posframe is found by `posframe--find-existing-posframe',
;; it need to redraw, more info:
;; 1. https://github.com/tumashu/ivy-posframe/pull/30
;; 2. https://github.com/tumashu/posframe/pull/118
(frame-parameter posframe 'existing-posframe))
(defun posframe--run-timeout-timer (posframe secs)
"Hide POSFRAME after a delay of SECS seconds."
(when (and (numberp secs) (> secs 0))
(when (timerp posframe--timeout-timer)
(cancel-timer posframe--timeout-timer))
(setq-local posframe--timeout-timer
(run-with-timer
secs nil #'posframe--make-frame-invisible posframe))))
(defun posframe--make-frame-invisible (frame)
"`make-frame-invisible' replacement to hide FRAME safely."
(when (and (frame-live-p frame)
(frame-visible-p frame))
(make-frame-invisible frame)))
(defun posframe-mouse-banish-simple (info)
"Banish mouse to (0, 0) of posframe base on INFO."
(let ((parent-frame (plist-get info :parent-frame))
(x (plist-get info :posframe-x))
(y (plist-get info :posframe-y))
(w (plist-get info :posframe-width))
(h (plist-get info :posframe-height))
(p-w (plist-get info :parent-frame-width))
(p-h (plist-get info :parent-frame-height)))
(set-mouse-pixel-position
parent-frame
(if (= x 0)
(min p-w (+ w 5))
(max 0 (- x 5)))
(if (= y 0)
(min p-h (+ h 10))
(max 0 (- y 10))))))
(defun posframe-mouse-banish-default (info)
"Banish mouse base on INFO.
FIXME: This is a hacky fix for the mouse focus problem, which like:
https://github.com/tumashu/posframe/issues/4#issuecomment-357514918"
(let* ((parent-frame (plist-get info :parent-frame))
(m-x (plist-get info :mouse-x))
(m-y (plist-get info :mouse-y))
(x (plist-get info :posframe-x))
(y (plist-get info :posframe-y))
(w (plist-get info :posframe-width))
(h (plist-get info :posframe-height))
(p-w (plist-get info :parent-frame-width))
(p-h (plist-get info :parent-frame-height)))
(when (and m-x m-y
(>= m-x x)
(<= m-x (+ x w))
(>= m-y y)
(<= m-y (+ y h)))
(set-mouse-pixel-position
parent-frame
(if (= x 0)
(min p-w (+ w 5))
(max 0 (- x 5)))