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836 lines
31 KiB
EmacsLisp
836 lines
31 KiB
EmacsLisp
;;; dframe.el --- dedicate frame support modes -*- lexical-binding:t -*-
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;; Copyright (C) 1996-2021 Free Software Foundation, Inc.
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;; Author: Eric M. Ludlam <zappo@gnu.org>
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;; Keywords: file, tags, tools
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software: you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
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;;; Commentary:
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;;
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;; This code was developed and maintained as a part of speedbar since 1996.
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;; It became its own support utility in Aug 2000.
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;;
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;; Dedicated frame mode is an Emacs independent library for supporting
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;; a program/buffer combination that resides in a dedicated frame.
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;; Support of this nature requires several complex interactions with the
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;; user which this library will provide, including:
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;;
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;; * Creation of a frame. Positioned relatively.
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;; Includes a frame cache for User position caching.
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;; * Switching between frames.
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;; * Timed activities using idle-timers
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;; * Frame/buffer killing hooks
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;; * Mouse-3 position relative menu
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;; * Mouse motion, help-echo hacks
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;; * Mouse clicking & double clicking
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;; * Mode line hacking
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;; * Utilities for use in a program covering:
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;; o keymap massage for some actions
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;; o working with an associated buffer
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;; o shift-click
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;; o detaching a frame
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;; o focus-shifting & optional frame jumping
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;; o currently active frame.
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;; o message/y-or-n-p
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;; o mouse set point
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;;
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;; To Use:
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;; 1) (require 'dframe)
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;; 2) Variable Setup:
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;; -frame-parameters -- Frame parameters for Emacs.
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;; -- Not on parameter lists: They can optionally include width
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;; and height. If width or height is not included, then it will
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;; be provided to match the originating frame. In general,
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;; turning off the menu bar, mode line, and minibuffer can
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;; provide a smaller window, or more display area.
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;; -track-mouse-flag -- mouse tracking on/off specific to your tool.
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;; -update-flag -- app toggle for timer use. Init from
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;; `dframe-have-timer-flag'. This is nil for terminals, since
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;; updating a frame in a terminal is not useful to the user.
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;; -key-map -- Your keymap. Call `dframe-update-keymap' on it.
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;; -buffer, -frame, -cached-frame -- Variables used to track your
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;; applications buffer, frame, or frame cache (when hidden). See
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;; `dframe-frame-mode' for details.
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;; -before-delete-hook, -before-popup-hook, -after-create-hook --
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;; Hooks to have called. The `-after-create-hook' probably wants
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;; to call a function which calls `dframe-reposition-frame' in an
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;; appropriate manner.
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;; 3) Function Setup:
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;; your-frame-mode -- function to toggle your app frame on and off.
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;; its tasks are:
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;; a) create a buffer
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;; b) Call `dframe-frame-mode'. (See its doc)
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;; c) If successful (your -frame variable has a value), call
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;; timer setup if applicable.
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;; your-frame-reposition- -- Function to call from after-create-hook to
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;; reposition your frame with `dframe-reposition-frame'.
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;; your-mode -- Set up the major mode of the buffer for your app.
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;; Set these variables: dframe-track-mouse-function,
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;; dframe-help-echo-function,
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;; dframe-mouse-click-function,
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;; dframe-mouse-position-function.
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;; See speedbar's implementation of these functions.
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;; `speedbar-current-frame', `speedbar-get-focus', `speedbar-message',
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;; `speedbar-y-or-n-p', `speedbar-set-timer', `speedbar-click',
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;; `speedbar-position-cursor-on-line'
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;; 4) Handling mouse clicks, and help text:
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;; dframe-track-mouse, dframe-help-echo-function --
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;; These variables need to be set to functions that display info
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;; based on the mouse's position.
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;; Text property 'help-echo, set to `dframe-help-echo', which will
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;; call `dframe-help-echo-function'.
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;; Have a `-click' function, it can call `dframe-quick-mouse' for
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;; positioning. If the variable `dframe-power-click' is non-nil,
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;; then `shift' was held down during the click.
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;;; Bugs
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;;
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;; * The timer managers doesn't handle multiple different timeouts.
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;; * You can't specify continuous timeouts (as opposed to just idle timers.)
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(defvar x-pointer-hand2)
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(defvar x-pointer-top-left-arrow)
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;;; Code:
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(define-obsolete-function-alias 'dframe-frame-parameter
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'frame-parameter "27.1")
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;;; Variables
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;;
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(defgroup dframe nil
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"Faces used in dframe."
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:prefix "dframe-"
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:group 'dframe)
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(defvar dframe-have-timer-flag (if (fboundp 'display-graphic-p)
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(display-graphic-p)
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window-system)
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"Non-nil means that timers are available for this Emacs.
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This is nil for terminals, since updating a frame in a terminal
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is not useful to the user.")
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(defcustom dframe-update-speed 1
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"Idle time in seconds needed before dframe will update itself.
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Updates occur to allow dframe to display directory information
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relevant to the buffer you are currently editing."
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:group 'dframe
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:type 'integer)
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(defcustom dframe-activity-change-focus-flag nil
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"Non-nil means the selected frame will change based on activity.
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Thus, if a file is selected for edit, the buffer will appear in the
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selected frame and the focus will change to that frame."
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:group 'dframe
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:type 'boolean)
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(defcustom dframe-after-select-attached-frame-hook nil
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"Hook run after dframe has selected the attached frame."
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:group 'dframe
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:type 'hook)
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(defvar-local dframe-track-mouse-function nil
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"A function to call when the mouse is moved in the given frame.
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Typically used to display info about the line under the mouse.")
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(defvar-local dframe-help-echo-function nil
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"A function to call when help-echo is used in newer versions of Emacs.
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Typically used to display info about the line under the mouse.")
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(defvar-local dframe-mouse-click-function nil
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"A function to call when the mouse is clicked.
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Valid clicks are mouse 2, our double mouse 1.")
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(defvar-local dframe-mouse-position-function nil
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"A function to call to position the cursor for a mouse click.")
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(defvar dframe-power-click nil
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"Never set this by hand. Value is t when S-mouse activity occurs.")
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(defvar-local dframe-timer nil
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"The dframe timer used for updating the buffer.")
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(defvar-local dframe-attached-frame nil
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"The frame which started a frame mode.
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This is the frame from which all interesting activities will go
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for the mode using dframe.")
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(defvar-local dframe-controlled nil
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"Is this buffer controlled by a dedicated frame.
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Local to those buffers, as a function called that created it.")
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(defun dframe-update-keymap (map)
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"Update the keymap MAP for dframe default bindings."
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;; Frame control
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(define-key map "q" 'dframe-close-frame)
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(define-key map "Q" 'delete-frame)
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;; Override switch to buffer to never hack our frame.
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(substitute-key-definition 'switch-to-buffer
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'dframe-switch-buffer-attached-frame
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map global-map)
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;; mouse bindings so we can manipulate the items on each line
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;; (define-key map [down-mouse-1] 'dframe-double-click)
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(define-key map [follow-link] 'mouse-face)
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(define-key map [mouse-2] 'dframe-click)
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;; This is the power click for new frames, or refreshing a cache
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(define-key map [S-mouse-2] 'dframe-power-click)
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;; This adds a small unnecessary visual effect
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;;(define-key map [down-mouse-2] 'dframe-quick-mouse)
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(define-key map [down-mouse-3] 'dframe-popup-kludge)
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;; This lets the user scroll as if we had a scrollbar... well maybe not
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(define-key map [mode-line mouse-2] 'dframe-mouse-hscroll)
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;; another handy place users might click to get our menu.
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(define-key map [mode-line down-mouse-1]
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'dframe-popup-kludge)
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;; We can't switch buffers with the buffer mouse menu. Lets hack it.
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(define-key map [C-down-mouse-1] 'dframe-hack-buffer-menu)
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;; Lastly, we want to track the mouse. Play here
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(define-key map [mouse-movement] 'dframe-track-mouse))
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(defun dframe-live-p (frame)
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"Return non-nil if FRAME is currently available."
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(and frame (frame-live-p frame) (frame-visible-p frame)))
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(defvar x-sensitive-text-pointer-shape)
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(defvar x-pointer-shape)
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(defun dframe-frame-mode (arg frame-var cache-var buffer-var frame-name
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local-mode-fn
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&optional
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parameters
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delete-hook popup-hook create-hook
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)
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"Manage a frame for an application, enabling it when ARG is positive.
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FRAME-VAR is a variable used to cache the frame being used.
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This frame is either resurrected, hidden, killed, etc based on
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the value.
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CACHE-VAR is a variable used to cache a cached frame.
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BUFFER-VAR is a variable used to cache the buffer being used in dframe.
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This buffer will have `dframe-frame-mode' run on it.
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FRAME-NAME is the name of the frame to create.
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LOCAL-MODE-FN is the function used to call this one.
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PARAMETERS are frame parameters to apply to this dframe.
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DELETE-HOOK is a hook to run when deleting a frame.
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POPUP-HOOK is a hook to run before showing a frame.
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CREATE-HOOK is a hook to run after creating a frame."
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(let ((conv-hook (lambda (val)
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(let ((sym (make-symbol "hook")))
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(set sym val) sym))))
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(if (consp delete-hook) (setq delete-hook (funcall conv-hook delete-hook)))
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(if (consp create-hook) (setq create-hook (funcall conv-hook create-hook)))
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(if (consp popup-hook) (setq popup-hook (funcall conv-hook popup-hook))))
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;; toggle frame on and off.
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(if (not arg) (if (dframe-live-p (symbol-value frame-var))
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(setq arg -1) (setq arg 1)))
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;; Make sure the current buffer is set.
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(set-buffer (symbol-value buffer-var))
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;; turn the frame off on neg number
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(if (and (numberp arg) (< arg 0))
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(progn
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(run-hooks delete-hook)
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(if (and (symbol-value frame-var)
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(frame-live-p (symbol-value frame-var)))
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(progn
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(set cache-var (symbol-value frame-var))
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(make-frame-invisible (symbol-value frame-var))))
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(set frame-var nil))
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;; Set this as our currently attached frame
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(setq dframe-attached-frame (selected-frame))
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(run-hooks 'dframe-setup-hook)
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(run-hooks popup-hook)
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;; Updated the buffer passed in to contain all the hacks needed
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;; to make it work well in a dedicated window.
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(with-current-buffer (symbol-value buffer-var)
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;; Declare this buffer a dedicated frame
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(setq dframe-controlled local-mode-fn)
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;; Enable mouse tracking in emacs
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(if dframe-track-mouse-function
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(setq-local track-mouse t)) ;this could be messy.
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;; Override `temp-buffer-show-hook' so that help and such
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;; put their stuff into a frame other than our own.
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;; Correct use of `temp-buffer-show-function': Bob Weiner
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(if (and (boundp 'temp-buffer-show-hook)
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(boundp 'temp-buffer-show-function))
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;; FIXME: Doesn't this get us into an inf-loop when the
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;; `temp-buffer-show-function' runs `temp-buffer-show-hook'
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;; (as is normally the case)?
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(setq-local temp-buffer-show-hook temp-buffer-show-function))
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(setq-local temp-buffer-show-function 'dframe-temp-buffer-show-function)
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;; If this buffer is killed, we must make sure that we destroy
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;; the frame the dedicated window is in.
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(add-hook 'kill-buffer-hook (lambda ()
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(let ((skilling (boundp 'skilling)))
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(if skilling
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nil
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(if dframe-controlled
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(progn
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(funcall dframe-controlled -1)
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(set buffer-var nil)
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)))))
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t t))
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;; Get the frame to work in
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(if (frame-live-p (symbol-value cache-var))
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(progn
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(set frame-var (symbol-value cache-var))
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(make-frame-visible (symbol-value frame-var))
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(select-frame (symbol-value frame-var))
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(set-window-dedicated-p (selected-window) nil)
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(unless (eq (current-buffer) (symbol-value buffer-var))
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;; To avoid that 'switch-to-buffer-obey-display-actions'
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;; butts in, use plain 'set-window-buffer' (Bug#37840).
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(set-window-buffer nil (symbol-value buffer-var)))
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(set-window-dedicated-p (selected-window) t)
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(raise-frame (symbol-value frame-var))
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)
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(if (frame-live-p (symbol-value frame-var))
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(raise-frame (symbol-value frame-var))
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(set frame-var
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(let* ((mh (frame-parameter dframe-attached-frame
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'menu-bar-lines))
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(paramsa
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;; Only add a guessed height if one is not specified
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;; in the input parameters.
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(if (assoc 'height parameters)
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parameters
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(append
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parameters
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(list (cons 'height (+ (or mh 0) (frame-height)))))))
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(params
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;; Only add a guessed width if one is not specified
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;; in the input parameters.
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(if (assoc 'width parameters)
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paramsa
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(append
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paramsa
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(list (cons 'width (frame-width))))))
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(frame
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(if (not (eq window-system 'x))
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(make-frame params)
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(let ((x-pointer-shape x-pointer-top-left-arrow)
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(x-sensitive-text-pointer-shape
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x-pointer-hand2))
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(make-frame params)))))
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frame))
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;; Put the buffer into the frame
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(save-excursion
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(select-frame (symbol-value frame-var))
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;; To avoid that 'switch-to-buffer-obey-display-actions'
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;; butts in, use plain 'set-window-buffer' (Bug#37840).
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(set-window-buffer nil (symbol-value buffer-var))
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(set-window-dedicated-p (selected-window) t))
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;; Run hooks (like reposition)
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(run-hooks create-hook)
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;; Frame name
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(if (and (or (null window-system) (eq window-system 'pc))
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(fboundp 'set-frame-name))
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(save-window-excursion
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(select-frame (symbol-value frame-var))
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(set-frame-name frame-name)))
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;; On a terminal, raise the frame or the user will
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;; be confused.
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(if (not window-system)
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(select-frame (symbol-value frame-var)))))))
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;; Not defined in builds without X, but behind window-system test.
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(declare-function x-display-pixel-width "xfns.c" (&optional terminal))
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(declare-function x-display-pixel-height "xfns.c" (&optional terminal))
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(defun dframe-reposition-frame (new-frame parent-frame location)
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"Move NEW-FRAME to be relative to PARENT-FRAME.
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LOCATION can be one of `random', `left-right', `top-bottom', or
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a cons cell indicating a position of the form (LEFT . TOP)."
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;; Position dframe.
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;; Do no positioning if not on a windowing system,
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(unless (or (not window-system) (eq window-system 'pc))
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(let* ((pfx (frame-parameter parent-frame 'left))
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(pfy (frame-parameter parent-frame 'top))
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(pfw (+ (tool-bar-pixel-width parent-frame)
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(frame-pixel-width parent-frame)))
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(pfh (frame-pixel-height parent-frame))
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(nfw (frame-pixel-width new-frame))
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(nfh (frame-pixel-height new-frame))
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newleft newtop)
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;; Rebuild pfx,pfy to be absolute positions.
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(setq pfx (if (not (consp pfx))
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pfx
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;; If pfx is a list, that means we grow
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;; from a specific edge of the display.
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;; Convert that to the distance from the
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;; left side of the display.
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(if (eq (car pfx) '-)
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;; A - means distance from the right edge
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;; of the display, or DW - pfx - framewidth
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(- (x-display-pixel-width) (car (cdr pfx)) pfw)
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(car (cdr pfx))))
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pfy (if (not (consp pfy))
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pfy
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;; If pfy is a list, that means we grow
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;; from a specific edge of the display.
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;; Convert that to the distance from the
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;; left side of the display.
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(if (eq (car pfy) '-)
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;; A - means distance from the right edge
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;; of the display, or DW - pfx - framewidth
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(- (x-display-pixel-height) (car (cdr pfy)) pfh)
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(car (cdr pfy)))))
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(cond ((eq location 'right)
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(setq newleft (+ pfx pfw 10)
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newtop pfy))
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((eq location 'left)
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(setq newleft (- pfx 10 nfw)
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newtop pfy))
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((eq location 'left-right)
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(setq newleft
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;; Decide which side to put it on. 200 is just a
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;; buffer for the left edge of the screen. The
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;; extra 10 is just dressings for window
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;; decorations.
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(let* ((left-guess (- pfx 10 nfw))
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(right-guess (+ pfx pfw 10))
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(left-margin left-guess)
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(right-margin (- (x-display-pixel-width)
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right-guess 5 nfw)))
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(cond ((>= left-margin 0) left-guess)
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((>= right-margin 0) right-guess)
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;; otherwise choose side we overlap less
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((> left-margin right-margin) 0)
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(t (- (x-display-pixel-width) nfw 5))))
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newtop pfy))
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((eq location 'top-bottom)
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(setq newleft pfx
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newtop
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;; Try and guess if we should be on the top or bottom.
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(let* ((top-guess (- pfy 15 nfh))
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(bottom-guess (+ pfy 5 pfh))
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(top-margin top-guess)
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(bottom-margin (- (x-display-pixel-height)
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bottom-guess 5 nfh)))
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(cond ((>= top-margin 0) top-guess)
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((>= bottom-margin 0) bottom-guess)
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;; Choose a side to overlap the least.
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((> top-margin bottom-margin) 0)
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(t (- (x-display-pixel-height) nfh 5))))))
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((consp location)
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(setq newleft (or (car location) 0)
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newtop (or (cdr location) 0)))
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(t nil))
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(modify-frame-parameters new-frame
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(list (cons 'left newleft)
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(cons 'top newtop))))))
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(defun dframe-detach (frame-var cache-var buffer-var)
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"Detach the frame in symbol FRAME-VAR.
|
||
CACHE-VAR and BUFFER-VAR are symbols as in `dframe-frame-mode'."
|
||
(with-current-buffer (symbol-value buffer-var)
|
||
(rename-buffer (buffer-name) t)
|
||
(let ((oldframe (symbol-value frame-var)))
|
||
(set buffer-var nil)
|
||
(set frame-var nil)
|
||
(set cache-var nil)
|
||
;; FIXME: Looks very suspicious. Luckily this function is unused.
|
||
(make-variable-buffer-local frame-var)
|
||
(set frame-var oldframe))))
|
||
|
||
;;; Special frame event proxies
|
||
(defvar dframe-setup-hook nil
|
||
"Used for setting frame special event bindings.")
|
||
|
||
(defun dframe-set-special-events ()
|
||
(define-key special-event-map [make-frame-visible]
|
||
'dframe-handle-make-frame-visible)
|
||
(define-key special-event-map [iconify-frame]
|
||
'dframe-handle-iconify-frame)
|
||
(define-key special-event-map [delete-frame]
|
||
'dframe-handle-delete-frame)
|
||
;; Only need to run once.
|
||
(remove-hook 'dframe-setup-hook #'dframe-set-special-events))
|
||
|
||
(when (boundp 'special-event-map)
|
||
(add-hook 'dframe-setup-hook #'dframe-set-special-events))
|
||
|
||
(defvar dframe-make-frame-visible-function nil
|
||
"Function used when a dframe controlled frame is de-iconified.
|
||
The function must take an EVENT.")
|
||
(defvar dframe-iconify-frame-function nil
|
||
"Function used when a dframe controlled frame is iconified.
|
||
The function must take an EVENT.")
|
||
(defvar dframe-delete-frame-function nil
|
||
"Function used when a frame attached to a dframe frame is deleted.
|
||
The function must take an EVENT.")
|
||
|
||
(defun dframe-handle-make-frame-visible (e)
|
||
"Handle a `make-frame-visible' event.
|
||
Should enable auto-updating if the last state was also enabled.
|
||
Argument E is the event making the frame visible."
|
||
(interactive "e")
|
||
(let ((f last-event-frame))
|
||
(if (and (dframe-attached-frame f)
|
||
dframe-make-frame-visible-function)
|
||
(funcall dframe-make-frame-visible-function e)
|
||
)))
|
||
|
||
(defun dframe-handle-iconify-frame (e)
|
||
"Handle a `iconify-frame' event.
|
||
Should disable auto-updating if the last state was also enabled.
|
||
Argument E is the event iconifying the frame."
|
||
(interactive "e")
|
||
(let ((f last-event-frame))
|
||
(if (and (dframe-attached-frame f)
|
||
dframe-iconify-frame-function e)
|
||
(funcall dframe-iconify-frame-function)
|
||
)))
|
||
|
||
(defun dframe-handle-delete-frame (e)
|
||
"Handle `delete-frame' event.
|
||
Argument E is the event deleting the frame."
|
||
(interactive "e")
|
||
(let ((fl (frame-list))
|
||
(sf (selected-frame)))
|
||
;; Loop over all frames. If dframe-delete-frame-function is
|
||
;; non-nil, call it.
|
||
(while fl
|
||
(select-frame (car fl))
|
||
(if dframe-delete-frame-function
|
||
(funcall dframe-delete-frame-function e))
|
||
(setq fl (cdr fl)))
|
||
(if (frame-live-p sf)
|
||
(select-frame sf))
|
||
(handle-delete-frame e)))
|
||
|
||
|
||
;;; Utilities
|
||
;;
|
||
(defun dframe-get-focus (frame-var activator)
|
||
"Change frame focus to or from a dedicated frame.
|
||
If the selected frame is not in the symbol FRAME-VAR, then FRAME-VAR
|
||
frame is selected. If the FRAME-VAR is active, then select the
|
||
attached frame. If FRAME-VAR is nil, ACTIVATOR is called to
|
||
created it."
|
||
(interactive)
|
||
(if (eq (selected-frame) (symbol-value frame-var))
|
||
(if (frame-live-p dframe-attached-frame)
|
||
(dframe-select-attached-frame))
|
||
;; make sure we have a frame
|
||
(if (not (frame-live-p (symbol-value frame-var)))
|
||
(funcall activator 1))
|
||
;; go there
|
||
(select-frame (symbol-value frame-var))
|
||
)
|
||
(other-frame 0))
|
||
|
||
|
||
(defun dframe-close-frame ()
|
||
"Close the current frame if it is dedicated."
|
||
(interactive)
|
||
(if dframe-controlled
|
||
(let ((b (current-buffer)))
|
||
(funcall dframe-controlled -1)
|
||
(kill-buffer b))))
|
||
|
||
(defun dframe-current-frame (frame-var desired-major-mode)
|
||
"Return the existing dedicated frame to use.
|
||
FRAME-VAR is the variable storing the currently active dedicated frame.
|
||
If the current frame's buffer uses DESIRED-MAJOR-MODE, then use that frame."
|
||
(if (not (eq (selected-frame) (symbol-value frame-var)))
|
||
(if (and (eq major-mode desired-major-mode)
|
||
(get-buffer-window (current-buffer))
|
||
(window-frame (get-buffer-window (current-buffer))))
|
||
(window-frame (get-buffer-window (current-buffer)))
|
||
(symbol-value frame-var))
|
||
(symbol-value frame-var)))
|
||
|
||
(defun dframe-attached-frame (&optional frame)
|
||
"Return the attached frame belonging to the dframe controlled frame FRAME.
|
||
If optional arg FRAME is nil just return `dframe-attached-frame'."
|
||
(save-excursion
|
||
(if frame (select-frame frame))
|
||
dframe-attached-frame))
|
||
|
||
(defun dframe-select-attached-frame (&optional frame)
|
||
"Switch to the frame the dframe controlled frame FRAME was started from.
|
||
If optional arg FRAME is nil assume the attached frame is already selected
|
||
and just run the hooks `dframe-after-select-attached-frame-hook'. Return
|
||
the attached frame."
|
||
(let ((frame (dframe-attached-frame frame)))
|
||
(if frame (select-frame frame))
|
||
(prog1 frame
|
||
(run-hooks 'dframe-after-select-attached-frame-hook))))
|
||
|
||
(defmacro dframe-with-attached-buffer (&rest forms)
|
||
"Execute FORMS in the attached frame's special buffer.
|
||
Optionally select that frame if necessary."
|
||
`(save-selected-window
|
||
;;(speedbar-set-timer speedbar-update-speed)
|
||
(dframe-select-attached-frame)
|
||
,@forms
|
||
(dframe-maybee-jump-to-attached-frame)))
|
||
|
||
(defun dframe-maybee-jump-to-attached-frame ()
|
||
"Jump to the attached frame ONLY if this was not a mouse event."
|
||
(when (or (not (dframe-mouse-event-p last-input-event))
|
||
dframe-activity-change-focus-flag)
|
||
(dframe-select-attached-frame)
|
||
;; KB: For what is this - raising the frame??
|
||
(other-frame 0)))
|
||
|
||
|
||
(defvar dframe-suppress-message-flag nil
|
||
"Non-nil means that `dframe-message' should just return a string.")
|
||
|
||
(defun dframe-message (fmt &rest args)
|
||
"Like `message', but for use in a dedicated frame.
|
||
Argument FMT is the format string, and ARGS are the arguments for message."
|
||
(save-selected-window
|
||
(if dframe-suppress-message-flag
|
||
(apply #'format-message fmt args)
|
||
(if dframe-attached-frame
|
||
;; KB: Here we do not need calling `dframe-select-attached-frame'
|
||
(select-frame dframe-attached-frame))
|
||
(apply #'message fmt args))))
|
||
|
||
(defun dframe-y-or-n-p (prompt)
|
||
"Like `y-or-n-p', but for use in a dedicated frame.
|
||
Argument PROMPT is the prompt to use."
|
||
(save-selected-window
|
||
(if (and ;;default-minibuffer-frame
|
||
dframe-attached-frame
|
||
;;(not (eq default-minibuffer-frame dframe-attached-frame))
|
||
)
|
||
;; KB: Here we do not need calling `dframe-select-attached-frame'
|
||
(select-frame dframe-attached-frame))
|
||
(y-or-n-p prompt)))
|
||
|
||
;;; timer management
|
||
;;
|
||
;; Unlike speedbar with a dedicated set of routines, dframe has one master
|
||
;; timer, and all dframe users will use it. At least until I figure out a way
|
||
;; around that problem.
|
||
;;
|
||
;; Advantage 1: Two apps with timer/frames can munge the master list
|
||
;; to make sure they occur in order.
|
||
;; Advantage 2: If a user hits a key between timer functions, we can
|
||
;; interrupt them safely.
|
||
(defvar dframe-client-functions nil
|
||
"List of client functions using the dframe timer.")
|
||
|
||
(defun dframe-set-timer (timeout fn &optional _null-on-error)
|
||
"Apply a timer with TIMEOUT, to call FN, or remove a timer if TIMEOUT is nil.
|
||
TIMEOUT is the number of seconds until the dframe controlled program
|
||
timer is called again. When TIMEOUT is nil, turn off all timeouts.
|
||
This function must be called from the buffer belonging to the program
|
||
who requested the timer. NULL-ON-ERROR is ignored."
|
||
;; First, fix up our list of client functions
|
||
(if timeout
|
||
(add-to-list 'dframe-client-functions fn)
|
||
(setq dframe-client-functions (delete fn dframe-client-functions)))
|
||
;; Now decided what to do about the timeout.
|
||
(if (or
|
||
;; We have a timer, restart the timer with the new time.
|
||
timeout
|
||
;; We have a timer, an off is requested, and no client
|
||
;; functions are left, shut er down.
|
||
(and dframe-timer (not timeout) dframe-client-functions))
|
||
;; Only call the low level function if we are changing the state.
|
||
(dframe-set-timer-internal timeout)))
|
||
|
||
(defun dframe-set-timer-internal (timeout &optional _null-on-error)
|
||
"Apply a timer with TIMEOUT to call the dframe timer manager."
|
||
(when dframe-timer
|
||
(cancel-timer dframe-timer)
|
||
(setq dframe-timer nil))
|
||
(when timeout
|
||
(setq dframe-timer (run-with-idle-timer timeout t 'dframe-timer-fn))))
|
||
|
||
(defun dframe-timer-fn ()
|
||
"Called due to the dframe timer.
|
||
Evaluates all cached timer functions in sequence."
|
||
(let ((l dframe-client-functions))
|
||
(while (and l (sit-for 0))
|
||
(with-demoted-errors "DFRAME TIMER ERROR: %S"
|
||
(funcall (car l)))
|
||
(setq l (cdr l)))))
|
||
|
||
(defun dframe-popup-kludge (e)
|
||
"Pop up a menu related to the clicked on item.
|
||
Must be bound to event E."
|
||
(interactive "e")
|
||
(save-excursion
|
||
(mouse-set-point e)
|
||
;; This gets the cursor where the user can see it.
|
||
(if (not (bolp)) (forward-char -1))
|
||
(sit-for 0)
|
||
(popup-menu (mouse-menu-major-mode-map) e)))
|
||
|
||
;;; Interactive user functions for the mouse
|
||
;;
|
||
(defun dframe-mouse-event-p (event)
|
||
"Return t if the event is a mouse related event."
|
||
(if (and (listp event)
|
||
(member (event-basic-type event)
|
||
'(mouse-1 mouse-2 mouse-3)))
|
||
t
|
||
nil))
|
||
|
||
(defun dframe-track-mouse (event)
|
||
"For motion EVENT, display info about the current line."
|
||
(interactive "e")
|
||
(when (and dframe-track-mouse-function
|
||
(windowp (posn-window (event-end event)))) ; Sometimes
|
||
; there is no window to jump into.
|
||
(funcall dframe-track-mouse-function event)))
|
||
|
||
(defun dframe-help-echo (_window &optional buffer position)
|
||
"Display help based context.
|
||
The context is in WINDOW, viewing BUFFER, at POSITION."
|
||
(when (and (not dframe-track-mouse-function)
|
||
(bufferp buffer)
|
||
dframe-help-echo-function)
|
||
(let ((dframe-suppress-message-flag t))
|
||
(with-current-buffer buffer
|
||
(save-excursion
|
||
(if position (goto-char position))
|
||
(funcall dframe-help-echo-function))))))
|
||
|
||
(defun dframe-mouse-set-point (e)
|
||
"Set point based on event E."
|
||
(mouse-set-point e))
|
||
|
||
(defun dframe-quick-mouse (e)
|
||
"Since mouse events are strange, this will keep the mouse nicely positioned.
|
||
This should be bound to mouse event E."
|
||
(interactive "e")
|
||
(dframe-mouse-set-point e)
|
||
(if dframe-mouse-position-function
|
||
(funcall dframe-mouse-position-function)))
|
||
|
||
(defun dframe-power-click (e)
|
||
"Activate any dframe mouse click as a power click.
|
||
A power click will dispose of cached data (if available) or bring a buffer
|
||
up into a different window.
|
||
This should be bound to mouse event E."
|
||
(interactive "e")
|
||
(let ((dframe-power-click t))
|
||
(select-frame last-event-frame)
|
||
(dframe-click e)))
|
||
|
||
(defun dframe-click (e)
|
||
"Call our clients click function on a user click.
|
||
E is the event causing the click."
|
||
(interactive "e")
|
||
(dframe-mouse-set-point e)
|
||
(when dframe-mouse-click-function
|
||
;; On the off chance of buffer switch, or something incorrectly
|
||
;; configured.
|
||
(funcall dframe-mouse-click-function e)))
|
||
|
||
(defun dframe-double-click (e)
|
||
"Activate the registered click function on a double click.
|
||
This must be bound to a mouse event.
|
||
This should be bound to mouse event E."
|
||
(interactive "e")
|
||
(cond ((eq (car e) 'down-mouse-1)
|
||
(dframe-mouse-set-point e))
|
||
((eq (car e) 'mouse-1)
|
||
(dframe-quick-mouse e))
|
||
((or (eq (car e) 'double-down-mouse-1)
|
||
(eq (car e) 'triple-down-mouse-1))
|
||
(dframe-click e))))
|
||
|
||
;;; Hacks of normal things.
|
||
;;
|
||
;; Some normal things that happen in one of these dedicated frames
|
||
;; must be handled specially, so that our dedicated frame isn't
|
||
;; messed up.
|
||
(defun dframe-temp-buffer-show-function (buffer)
|
||
"Placed in the variable `temp-buffer-show-function' in dedicated frames.
|
||
If a user requests help using \\[help-command] <Key> the temp BUFFER will be
|
||
redirected into a window on the attached frame."
|
||
(if dframe-attached-frame (dframe-select-attached-frame))
|
||
(pop-to-buffer buffer nil)
|
||
(other-window -1)
|
||
(run-hooks 'temp-buffer-show-hook))
|
||
|
||
(defun dframe-hack-buffer-menu (_e)
|
||
"Control mouse 1 is buffer menu.
|
||
This hack overrides it so that the right thing happens in the main
|
||
Emacs frame, not in the dedicated frame.
|
||
Argument E is the event causing this activity."
|
||
(interactive "e")
|
||
(let ((fn (lookup-key global-map [C-down-mouse-1]))
|
||
(oldbuff (current-buffer))
|
||
(newbuff nil))
|
||
(unwind-protect
|
||
(save-excursion
|
||
(set-window-dedicated-p (selected-window) nil)
|
||
(call-interactively fn)
|
||
(setq newbuff (current-buffer)))
|
||
(switch-to-buffer oldbuff)
|
||
(set-window-dedicated-p (selected-window) t))
|
||
(if (not (eq newbuff oldbuff))
|
||
(dframe-with-attached-buffer
|
||
(switch-to-buffer newbuff)))))
|
||
|
||
(defun dframe-switch-buffer-attached-frame (&optional buffer)
|
||
"Switch to BUFFER in the attached frame, and raise that frame.
|
||
This overrides the default behavior of `switch-to-buffer' which is
|
||
broken because of the dedicated frame."
|
||
(interactive)
|
||
;; Assume we are in the dedicated frame.
|
||
(other-frame 1)
|
||
;; Now switch buffers
|
||
(if buffer
|
||
(switch-to-buffer buffer)
|
||
(call-interactively 'switch-to-buffer nil nil)))
|
||
|
||
(defun dframe-mouse-hscroll (e)
|
||
"Read a mouse event E from the mode line, and horizontally scroll.
|
||
If the mouse is being clicked on the far left, or far right of
|
||
the mode-line."
|
||
(interactive "e")
|
||
(let* ((x-point (car (nth 2 (car (cdr e)))))
|
||
(pixels-per-10-col (/ (* 10 (frame-pixel-width))
|
||
(frame-width)))
|
||
(click-col (1+ (/ (* 10 x-point) pixels-per-10-col))))
|
||
(cond ((< click-col 3)
|
||
(scroll-left 2))
|
||
((> click-col (- (window-width) 5))
|
||
(scroll-right 2))
|
||
(t (dframe-message
|
||
"Click on the edge of the mode line to scroll left/right")))))
|
||
|
||
|
||
;;; Obsolete
|
||
|
||
(defvar dframe-version "1.3"
|
||
"The current version of the dedicated frame library.")
|
||
(make-obsolete-variable 'dframe-version 'emacs-version "28.1")
|
||
|
||
(provide 'dframe)
|
||
|
||
;;; dframe.el ends here
|