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- ;;; ediff-wind.el --- window manipulation utilities
-
- ;; Copyright (C) 1994, 1995, 1996 Free Software Foundation, Inc.
-
- ;; Author: Michael Kifer <kifer@cs.sunysb.edu>
-
- ;; 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 2, 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; see the file COPYING. If not, write to the
- ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- ;; Boston, MA 02111-1307, USA.
-
- ;;; Code:
-
- (require 'ediff-init)
-
- ;; Compiler pacifier
- (defvar icon-title-format)
- (defvar top-toolbar-height)
- (defvar bottom-toolbar-height)
- (defvar left-toolbar-height)
- (defvar right-toolbar-height)
- (defvar left-toolbar-width)
- (defvar right-toolbar-width)
- (defvar default-menubar)
- (defvar frame-icon-title-format)
- ;; end pacifier
-
-
- (defvar ediff-window-setup-function (if (ediff-window-display-p)
- 'ediff-setup-windows-multiframe
- 'ediff-setup-windows-plain)
- "*Function called to set up windows.
- Ediff provides a choice of two functions: ediff-setup-windows-plain, for
- doing everything in one frame, and ediff-setup-windows-multiframe,
- which sets the control panel in a separate frame. Also, if the latter
- function detects that one of the buffers A/B is seen in some other frame,
- it will try to keep that buffer in that frame.
-
- If you don't like the two functions provided---write your own one.
- The basic guidelines:
- 1. It should leave the control buffer current and the control window
- selected.
- 2. It should set ediff-window-A, ediff-window-B, ediff-window-C,
- and ediff-control-window to contain window objects that display
- the corresponding buffers.
- 3. It should accept the following arguments:
- buffer-A, buffer-B, buffer-C, control-buffer
- Buffer C may not be used in jobs that compare only two buffers.
- If you plan to do something fancy, take a close look at how the two
- provided functions are written.")
-
- ;; indicates if we are in a multiframe setup
- (ediff-defvar-local ediff-multiframe nil "")
-
- ;; Share of the frame occupied by the merge window (buffer C)
- (ediff-defvar-local ediff-merge-window-share 0.45 "")
-
- ;; The control window.
- (ediff-defvar-local ediff-control-window nil "")
- ;; Official window for buffer A
- (ediff-defvar-local ediff-window-A nil "")
- ;; Official window for buffer B
- (ediff-defvar-local ediff-window-B nil "")
- ;; Official window for buffer C
- (ediff-defvar-local ediff-window-C nil "")
- ;; Ediff's window configuration.
- ;; Used to minimize the need to rearrange windows.
- (ediff-defvar-local ediff-window-config-saved "" "")
-
-
- (defvar ediff-split-window-function 'split-window-vertically
- "*The function used to split the main window between buffer-A and buffer-B.
- You can set it to a horizontal split instead of the default vertical split
- by setting this variable to `split-window-horizontally'.
- You can also have your own function to do fancy splits.
- This variable has no effect when buffer-A/B are shown in different frames.
- In this case, Ediff will use those frames to display these buffers.")
-
- (defvar ediff-merge-split-window-function 'split-window-horizontally
- "*The function used to split the main window between buffer-A and buffer-B.
- You can set it to a vertical split instead of the default horizontal split
- by setting this variable to `split-window-vertically'.
- You can also have your own function to do fancy splits.
- This variable has no effect when buffer-A/B/C are shown in different frames.
- In this case, Ediff will use those frames to display these buffers.")
-
- (defconst ediff-control-frame-parameters
- (list
- '(name . "Ediff")
- ;;'(unsplittable . t)
- '(minibuffer . nil)
- '(user-position . t) ; Emacs only
- '(vertical-scroll-bars . nil) ; Emacs only
- '(scrollbar-width . 0) ; XEmacs only
- '(menu-bar-lines . 0) ; Emacs only
- ;; don't lower and auto-raise
- '(auto-lower . nil)
- '(auto-raise . t)
- ;; this blocks queries from window manager as to where to put
- ;; ediff's control frame. we put the frame outside the display,
- ;; so the initial frame won't jump all over the screen
- (cons 'top (if (fboundp 'ediff-display-pixel-height)
- (1+ (ediff-display-pixel-height))
- 3000))
- (cons 'left (if (fboundp 'ediff-display-pixel-width)
- (1+ (ediff-display-pixel-width))
- 3000))
- )
- "Frame parameters for displaying Ediff Control Panel.
- Do not specify width and height here. These are computed automatically.")
-
- ;; position of the mouse; used to decide whether to warp the mouse into ctl
- ;; frame
- (ediff-defvar-local ediff-mouse-pixel-position nil "")
-
- ;; not used for now
- (defvar ediff-mouse-pixel-threshold 30
- "If the user moves mouse more than this many pixels, Ediff won't warp mouse into control window.")
-
- (defvar ediff-grab-mouse t
- "*If t, Ediff will always grab the mouse and put it in the control frame.
- If 'maybe, Ediff will do it sometimes, but not after operations that require
- relatively long time. If nil, the mouse will be entirely user's
- responsibility.")
-
- (defvar ediff-control-frame-position-function 'ediff-make-frame-position
- "Function to call to determine the desired location for the control panel.
- Expects three parameters: the control buffer, the desired width and height
- of the control frame. It returns an association list
- of the form \(\(top . <position>\) \(left . <position>\)\)")
-
- (defvar ediff-control-frame-upward-shift (if ediff-xemacs-p 42 14)
- "*The upward shift of control frame from the top of buffer A's frame.
- Measured in pixels.
- This is used by the default control frame positioning function,
- `ediff-make-frame-position'. This variable is provided for easy
- customization of the default.")
-
- (defvar ediff-narrow-control-frame-leftward-shift (if ediff-xemacs-p 7 3)
- "*The leftward shift of control frame from the right edge of buf A's frame.
- Measured in characters.
- This is used by the default control frame positioning function,
- `ediff-make-frame-position' to adjust the position of the control frame
- when it shows the short menu. This variable is provided for easy
- customization of the default.")
-
- (defvar ediff-wide-control-frame-rightward-shift 7
- "*The rightward shift of control frame from the left edge of buf A's frame.
- Measured in characters.
- This is used by the default control frame positioning function,
- `ediff-make-frame-position' to adjust the position of the control frame
- when it shows the full menu. This variable is provided for easy
- customization of the default.")
-
-
- ;; Wide frame display
-
- ;; t means Ediff is using wide display
- (ediff-defvar-local ediff-wide-display-p nil "")
- ;; keeps frame config for toggling wide display
- (ediff-defvar-local ediff-wide-display-orig-parameters nil
- "Frame parameters to be restored when the user wants to toggle the wide
- display off.")
- (ediff-defvar-local ediff-wide-display-frame nil
- "Frame to be used for wide display.")
- (ediff-defvar-local ediff-make-wide-display-function 'ediff-make-wide-display
- "The value is a function that is called to create a wide display.
- The function is called without arguments. It should resize the frame in
- which buffers A, B, and C are to be displayed, and it should save the old
- frame parameters in `ediff-wide-display-orig-parameters'.
- The variable `ediff-wide-display-frame' should be set to contain
- the frame used for the wide display.")
-
- ;; Frame used for the control panel in a windowing system.
- (ediff-defvar-local ediff-control-frame nil "")
-
- (defvar ediff-prefer-iconified-control-frame nil
- "*If t, keep control panel iconified when help message is off.
- This has effect only on a windowing system.
- If t, hitting `?' to toggle control panel off iconifies it.
-
- This is only useful in Emacs and only for certain kinds of window managers,
- such as TWM and its derivatives, since the window manager must permit
- keyboard input to go into icons. XEmacs completely ignores keyboard input
- into icons, regardless of the window manager.")
-
- ;;; Functions
-
- (defun ediff-get-window-by-clicking (wind prev-wind wind-number)
- (let (event)
- (message
- "Select windows by clicking. Please click on Window %d " wind-number)
- (while (not (ediff-mouse-event-p (setq event (ediff-read-event))))
- (if (sit-for 1) ; if sequence of events, wait till the final word
- (beep 1))
- (message "Please click on Window %d " wind-number))
- (ediff-read-event) ; discard event
- (setq wind (if ediff-xemacs-p
- (event-window event)
- (posn-window (event-start event))))
- ))
-
-
- ;; Select the lowest window on the frame.
- (defun ediff-select-lowest-window ()
- (if ediff-xemacs-p
- (select-window (frame-lowest-window))
- (let* ((lowest-window (selected-window))
- (bottom-edge (car (cdr (cdr (cdr (window-edges))))))
- (last-window (save-excursion
- (other-window -1) (selected-window)))
- (window-search t))
- (while window-search
- (let* ((this-window (next-window))
- (next-bottom-edge
- (car (cdr (cdr (cdr (window-edges this-window)))))))
- (if (< bottom-edge next-bottom-edge)
- (progn
- (setq bottom-edge next-bottom-edge)
- (setq lowest-window this-window)))
-
- (select-window this-window)
- (if (eq last-window this-window)
- (progn
- (select-window lowest-window)
- (setq window-search nil))))))))
-
-
- ;;; Common window setup routines
-
- ;; Set up the window configuration. If POS is given, set the points to
- ;; the beginnings of the buffers.
- ;; When 3way comparison is added, this will have to choose the appropriate
- ;; setup function based on ediff-job-name
- (defun ediff-setup-windows (buffer-A buffer-B buffer-C control-buffer)
- ;; Make sure we are not in the minibuffer window when we try to delete
- ;; all other windows.
- (run-hooks 'ediff-before-setup-windows-hook)
- (if (eq (selected-window) (minibuffer-window))
- (other-window 1))
-
- ;; in case user did a no-no on a tty
- (or (ediff-window-display-p)
- (setq ediff-window-setup-function 'ediff-setup-windows-plain))
-
- (or (ediff-keep-window-config control-buffer)
- (funcall
- (ediff-eval-in-buffer control-buffer ediff-window-setup-function)
- buffer-A buffer-B buffer-C control-buffer))
- (run-hooks 'ediff-after-setup-windows-hook))
-
- ;; Just set up 3 windows.
- ;; Usually used without windowing systems
- ;; With windowing, we want to use dedicated frames.
- (defun ediff-setup-windows-plain (buffer-A buffer-B buffer-C control-buffer)
- (ediff-eval-in-buffer control-buffer
- (setq ediff-multiframe nil))
- (if ediff-merge-job
- (ediff-setup-windows-plain-merge
- buffer-A buffer-B buffer-C control-buffer)
- (ediff-setup-windows-plain-compare
- buffer-A buffer-B buffer-C control-buffer)))
-
- (defun ediff-setup-windows-plain-merge (buf-A buf-B buf-C control-buffer)
- ;; skip dedicated and unsplittable frames
- (ediff-destroy-control-frame control-buffer)
- (let ((window-min-height 1)
- split-window-function
- merge-window-share merge-window-lines
- wind-A wind-B wind-C)
- (ediff-eval-in-buffer control-buffer
- (setq merge-window-share ediff-merge-window-share
- ;; this lets us have local versions of ediff-split-window-function
- split-window-function ediff-split-window-function))
- (delete-other-windows)
- (split-window-vertically)
- (ediff-select-lowest-window)
- (ediff-setup-control-buffer control-buffer)
-
- ;; go to the upper window and split it betw A, B, and possibly C
- (other-window 1)
- (setq merge-window-lines
- (max 2 (round (* (window-height) merge-window-share))))
- (switch-to-buffer buf-A)
- (setq wind-A (selected-window))
-
- ;; XEmacs used to have a lot of trouble with display
- ;; It did't set things right unless we tell it to sit still
- ;; 19.12 seems ok.
- ;;(if ediff-xemacs-p (sit-for 0))
-
- (split-window-vertically (max 2 (- (window-height) merge-window-lines)))
- (if (eq (selected-window) wind-A)
- (other-window 1))
- (setq wind-C (selected-window))
- (switch-to-buffer buf-C)
-
- (select-window wind-A)
- (funcall split-window-function)
-
- (if (eq (selected-window) wind-A)
- (other-window 1))
- (switch-to-buffer buf-B)
- (setq wind-B (selected-window))
-
- (ediff-eval-in-buffer control-buffer
- (setq ediff-window-A wind-A
- ediff-window-B wind-B
- ediff-window-C wind-C))
-
- (ediff-select-lowest-window)
- (ediff-setup-control-buffer control-buffer)
- ))
-
-
- ;; This function handles all comparison jobs, including 3way jobs
- (defun ediff-setup-windows-plain-compare (buf-A buf-B buf-C control-buffer)
- ;; skip dedicated and unsplittable frames
- (ediff-destroy-control-frame control-buffer)
- (let ((window-min-height 1)
- split-window-function wind-width-or-height
- three-way-comparison
- wind-A-start wind-B-start wind-A wind-B wind-C)
- (ediff-eval-in-buffer control-buffer
- (setq wind-A-start (ediff-overlay-start
- (ediff-get-value-according-to-buffer-type
- 'A ediff-narrow-bounds))
- wind-B-start (ediff-overlay-start
- (ediff-get-value-according-to-buffer-type
- 'B ediff-narrow-bounds))
- ;; this lets us have local versions of ediff-split-window-function
- split-window-function ediff-split-window-function
- three-way-comparison ediff-3way-comparison-job))
- (delete-other-windows)
- (split-window-vertically)
- (ediff-select-lowest-window)
- (ediff-setup-control-buffer control-buffer)
-
- ;; go to the upper window and split it betw A, B, and possibly C
- (other-window 1)
- (switch-to-buffer buf-A)
- (setq wind-A (selected-window))
- (if three-way-comparison
- (setq wind-width-or-height
- (/ (if (eq split-window-function 'split-window-vertically)
- (window-height wind-A)
- (window-width wind-A))
- 3)))
-
- ;; XEmacs used to have a lot of trouble with display
- ;; It did't set things right unless we told it to sit still
- ;; 19.12 seems ok.
- ;;(if ediff-xemacs-p (sit-for 0))
-
- (funcall split-window-function wind-width-or-height)
-
- (if (eq (selected-window) wind-A)
- (other-window 1))
- (switch-to-buffer buf-B)
- (setq wind-B (selected-window))
-
- (if three-way-comparison
- (progn
- (funcall split-window-function) ; equally
- (if (eq (selected-window) wind-B)
- (other-window 1))
- (switch-to-buffer buf-C)
- (setq wind-C (selected-window))))
-
- (ediff-eval-in-buffer control-buffer
- (setq ediff-window-A wind-A
- ediff-window-B wind-B
- ediff-window-C wind-C))
-
- ;; It is unlikely that we will want to implement 3way window comparison.
- ;; So, only buffers A and B are used here.
- (if ediff-windows-job
- (progn
- (set-window-start wind-A wind-A-start)
- (set-window-start wind-B wind-B-start)))
-
- (ediff-select-lowest-window)
- (ediff-setup-control-buffer control-buffer)
- ))
-
-
- ;; dispatch an appropriate window setup function
- (defun ediff-setup-windows-multiframe (buf-A buf-B buf-C control-buf)
- (ediff-eval-in-buffer control-buf
- (setq ediff-multiframe t))
- (if ediff-merge-job
- (ediff-setup-windows-multiframe-merge buf-A buf-B buf-C control-buf)
- (ediff-setup-windows-multiframe-compare buf-A buf-B buf-C control-buf)))
-
- (defun ediff-setup-windows-multiframe-merge (buf-A buf-B buf-C control-buf)
- ;;; Algorithm:
- ;;; 1. Never use frames that have dedicated windows in them---it is bad to
- ;;; destroy dedicated windows.
- ;;; 2. If A and B are in the same frame but C's frame is different--- use one
- ;;; frame for A and B and use a separate frame for C.
- ;;; 3. If C's frame is non-existent, then: if the first suitable
- ;;; non-dedicated frame is different from A&B's, then use it for C.
- ;;; Otherwise, put A,B, and C in one frame.
- ;;; 4. If buffers A, B, C are is separate frames, use them to display these
- ;;; buffers.
-
- ;; Skip dedicated or iconified frames.
- ;; Unsplittable frames are taken care of later.
- (ediff-skip-unsuitable-frames 'ok-unsplittable)
-
- (let* ((window-min-height 1)
- (wind-A (ediff-get-visible-buffer-window buf-A))
- (wind-B (ediff-get-visible-buffer-window buf-B))
- (wind-C (ediff-get-visible-buffer-window buf-C))
- (frame-A (if wind-A (window-frame wind-A)))
- (frame-B (if wind-B (window-frame wind-B)))
- (frame-C (if wind-C (window-frame wind-C)))
- ;; on wide display, do things in one frame
- (force-one-frame
- (ediff-eval-in-buffer control-buf ediff-wide-display-p))
- ;; this lets us have local versions of ediff-split-window-function
- (split-window-function
- (ediff-eval-in-buffer control-buf ediff-split-window-function))
- (orig-wind (selected-window))
- (orig-frame (selected-frame))
- (use-same-frame (or force-one-frame
- ;; A and C must be in one frame
- (eq frame-A (or frame-C orig-frame))
- ;; B and C must be in one frame
- (eq frame-B (or frame-C orig-frame))
- ;; A or B is not visible
- (not (frame-live-p frame-A))
- (not (frame-live-p frame-B))
- ;; A or B is not suitable for display
- (not (ediff-window-ok-for-display wind-A))
- (not (ediff-window-ok-for-display wind-B))
- ;; A and B in the same frame, and no good frame
- ;; for C
- (and (eq frame-A frame-B)
- (not (frame-live-p frame-C)))
- ))
- ;; use-same-frame-for-AB implies wind A and B are ok for display
- (use-same-frame-for-AB (and (not use-same-frame)
- (eq frame-A frame-B)))
- (merge-window-share (ediff-eval-in-buffer control-buf
- ediff-merge-window-share))
- merge-window-lines
- designated-minibuffer-frame
- done-A done-B done-C)
-
- ;; buf-A on its own
- (if (and (window-live-p wind-A)
- (null use-same-frame) ; implies wind-A is suitable
- (null use-same-frame-for-AB))
- (progn ; bug A on its own
- ;; buffer buf-A is seen in live wind-A
- (select-window wind-A)
- (delete-other-windows)
- (setq wind-A (selected-window))
- (setq done-A t)))
-
- ;; buf-B on its own
- (if (and (window-live-p wind-B)
- (null use-same-frame) ; implies wind-B is suitable
- (null use-same-frame-for-AB))
- (progn ; buf B on its own
- ;; buffer buf-B is seen in live wind-B
- (select-window wind-B)
- (delete-other-windows)
- (setq wind-B (selected-window))
- (setq done-B t)))
-
- ;; buf-C on its own
- (if (and (window-live-p wind-C)
- (ediff-window-ok-for-display wind-C)
- (null use-same-frame)) ; buf C on its own
- (progn
- ;; buffer buf-C is seen in live wind-C
- (select-window wind-C)
- (delete-other-windows)
- (setq wind-C (selected-window))
- (setq done-C t)))
-
- (if (and use-same-frame-for-AB ; implies wind A and B are suitable
- (window-live-p wind-A))
- (progn
- ;; wind-A must already be displaying buf-A
- (select-window wind-A)
- (delete-other-windows)
- (setq wind-A (selected-window))
-
- (funcall split-window-function)
- (if (eq (selected-window) wind-A)
- (other-window 1))
- (switch-to-buffer buf-B)
- (setq wind-B (selected-window))
-
- (setq done-A t
- done-B t)))
-
- (if use-same-frame
- (let ((window-min-height 1))
- ;; avoid dedicated and non-splittable windows
- (ediff-skip-unsuitable-frames)
- (delete-other-windows)
- (setq merge-window-lines
- (max 2 (round (* (window-height) merge-window-share))))
- (switch-to-buffer buf-A)
- (setq wind-A (selected-window))
-
- (split-window-vertically
- (max 2 (- (window-height) merge-window-lines)))
- (if (eq (selected-window) wind-A)
- (other-window 1))
- (setq wind-C (selected-window))
- (switch-to-buffer buf-C)
-
- (select-window wind-A)
-
- (funcall split-window-function)
- (if (eq (selected-window) wind-A)
- (other-window 1))
- (switch-to-buffer buf-B)
- (setq wind-B (selected-window))
-
- (setq done-A t
- done-B t
- done-C t)
- ))
-
- (or done-A ; Buf A to be set in its own frame,
- ;;; or it was set before because use-same-frame = 1
- (progn
- ;; Buf-A was not set up yet as it wasn't visible,
- ;; and use-same-frame = nil, use-same-frame-for-AB = nil
- (select-window orig-wind)
- (delete-other-windows)
- (switch-to-buffer buf-A)
- (setq wind-A (selected-window))
- ))
- (or done-B ; Buf B to be set in its own frame,
- ;;; or it was set before because use-same-frame = 1
- (progn
- ;; Buf-B was not set up yet as it wasn't visible
- ;; and use-same-frame = nil, use-same-frame-for-AB = nil
- (select-window orig-wind)
- (delete-other-windows)
- (switch-to-buffer buf-B)
- (setq wind-B (selected-window))
- ))
-
- (or done-C ; Buf C to be set in its own frame,
- ;;; or it was set before because use-same-frame = 1
- (progn
- ;; Buf-C was not set up yet as it wasn't visible
- ;; and use-same-frame = nil
- (select-window orig-wind)
- (delete-other-windows)
- (switch-to-buffer buf-C)
- (setq wind-C (selected-window))
- ))
-
- (ediff-eval-in-buffer control-buf
- (setq ediff-window-A wind-A
- ediff-window-B wind-B
- ediff-window-C wind-C)
- (setq frame-A (window-frame ediff-window-A)
- designated-minibuffer-frame
- (window-frame (minibuffer-window frame-A))))
-
- (ediff-setup-control-frame control-buf designated-minibuffer-frame)
- ))
-
-
- ;; Window setup for all comparison jobs, including 3way comparisons
- (defun ediff-setup-windows-multiframe-compare (buf-A buf-B buf-C control-buf)
- ;;; Algorithm:
- ;;; If a buffer is seen in a frame, use that frame for that buffer.
- ;;; If it is not seen, use the current frame.
- ;;; If both buffers are not seen, they share the current frame. If one
- ;;; of the buffers is not seen, it is placed in the current frame (where
- ;;; ediff started). If that frame is displaying the other buffer, it is
- ;;; shared between the two buffers.
- ;;; However, if we decide to put both buffers in one frame
- ;;; and the selected frame isn't splittable, we create a new frame and
- ;;; put both buffers there, event if one of this buffers is visible in
- ;;; another frame.
-
- ;; Skip dedicated or iconified frames.
- ;; Unsplittable frames are taken care of later.
- (ediff-skip-unsuitable-frames 'ok-unsplittable)
-
- (let* ((window-min-height 1)
- (wind-A (ediff-get-visible-buffer-window buf-A))
- (wind-B (ediff-get-visible-buffer-window buf-B))
- (wind-C (ediff-get-visible-buffer-window buf-C))
- (frame-A (if wind-A (window-frame wind-A)))
- (frame-B (if wind-B (window-frame wind-B)))
- (frame-C (if wind-C (window-frame wind-C)))
- (ctl-frame-exists-p (ediff-eval-in-buffer control-buf
- (frame-live-p ediff-control-frame)))
- ;; on wide display, do things in one frame
- (force-one-frame
- (ediff-eval-in-buffer control-buf ediff-wide-display-p))
- ;; this lets us have local versions of ediff-split-window-function
- (split-window-function
- (ediff-eval-in-buffer control-buf ediff-split-window-function))
- (three-way-comparison
- (ediff-eval-in-buffer control-buf ediff-3way-comparison-job))
- (orig-wind (selected-window))
- (use-same-frame (or force-one-frame
- (eq frame-A frame-B)
- (not (ediff-window-ok-for-display wind-A))
- (not (ediff-window-ok-for-display wind-B))
- (if three-way-comparison
- (or (eq frame-A frame-C)
- (eq frame-B frame-C)
- (not (ediff-window-ok-for-display wind-C))
- (not (frame-live-p frame-A))
- (not (frame-live-p frame-B))
- (not (frame-live-p frame-C))))
- (and (not (frame-live-p frame-B))
- (or ctl-frame-exists-p
- (eq frame-A (selected-frame))))
- (and (not (frame-live-p frame-A))
- (or ctl-frame-exists-p
- (eq frame-B (selected-frame))))))
- wind-A-start wind-B-start
- designated-minibuffer-frame
- done-A done-B done-C)
-
- (ediff-eval-in-buffer control-buf
- (setq wind-A-start (ediff-overlay-start
- (ediff-get-value-according-to-buffer-type
- 'A ediff-narrow-bounds))
- wind-B-start (ediff-overlay-start
- (ediff-get-value-according-to-buffer-type
- 'B ediff-narrow-bounds))))
-
- (if (and (window-live-p wind-A) (null use-same-frame)) ; buf-A on its own
- (progn
- ;; buffer buf-A is seen in live wind-A
- (select-window wind-A) ; must be displaying buf-A
- (delete-other-windows)
- (setq wind-A (selected-window))
- (setq done-A t)))
-
- (if (and (window-live-p wind-B) (null use-same-frame)) ; buf B on its own
- (progn
- ;; buffer buf-B is seen in live wind-B
- (select-window wind-B) ; must be displaying buf-B
- (delete-other-windows)
- (setq wind-B (selected-window))
- (setq done-B t)))
-
- (if (and (window-live-p wind-C) (null use-same-frame)) ; buf C on its own
- (progn
- ;; buffer buf-C is seen in live wind-C
- (select-window wind-C) ; must be displaying buf-C
- (delete-other-windows)
- (setq wind-C (selected-window))
- (setq done-C t)))
-
- (if use-same-frame
- (let (wind-width-or-height) ; this affects 3way setups only
- ;; avoid dedicated and non-splittable windows
- (ediff-skip-unsuitable-frames)
- (delete-other-windows)
- (switch-to-buffer buf-A)
- (setq wind-A (selected-window))
-
- (if three-way-comparison
- (setq wind-width-or-height
- (/
- (if (eq split-window-function 'split-window-vertically)
- (window-height wind-A)
- (window-width wind-A))
- 3)))
-
- (funcall split-window-function wind-width-or-height)
- (if (eq (selected-window) wind-A)
- (other-window 1))
- (switch-to-buffer buf-B)
- (setq wind-B (selected-window))
-
- (if three-way-comparison
- (progn
- (funcall split-window-function) ; equally
- (if (memq (selected-window) (list wind-A wind-B))
- (other-window 1))
- (switch-to-buffer buf-C)
- (setq wind-C (selected-window))))
- (setq done-A t
- done-B t
- done-C t)
- ))
-
- (or done-A ; Buf A to be set in its own frame
- ;;; or it was set before because use-same-frame = 1
- (progn
- ;; Buf-A was not set up yet as it wasn't visible,
- ;; and use-same-frame = nil
- (select-window orig-wind)
- (delete-other-windows)
- (switch-to-buffer buf-A)
- (setq wind-A (selected-window))
- ))
- (or done-B ; Buf B to be set in its own frame
- ;;; or it was set before because use-same-frame = 1
- (progn
- ;; Buf-B was not set up yet as it wasn't visible,
- ;; and use-same-frame = nil
- (select-window orig-wind)
- (delete-other-windows)
- (switch-to-buffer buf-B)
- (setq wind-B (selected-window))
- ))
-
- (if three-way-comparison
- (or done-C ; Buf C to be set in its own frame
- ;;; or it was set before because use-same-frame = 1
- (progn
- ;; Buf-C was not set up yet as it wasn't visible,
- ;; and use-same-frame = nil
- (select-window orig-wind)
- (delete-other-windows)
- (switch-to-buffer buf-C)
- (setq wind-C (selected-window))
- )))
-
- (ediff-eval-in-buffer control-buf
- (setq ediff-window-A wind-A
- ediff-window-B wind-B
- ediff-window-C wind-C)
-
- (setq frame-A (window-frame ediff-window-A)
- designated-minibuffer-frame
- (window-frame (minibuffer-window frame-A))))
-
- ;; It is unlikely that we'll implement a version of ediff-windows that
- ;; would compare 3 windows at once. So, we don't use buffer C here.
- (if ediff-windows-job
- (progn
- (set-window-start wind-A wind-A-start)
- (set-window-start wind-B wind-B-start)))
-
- (ediff-setup-control-frame control-buf designated-minibuffer-frame)
- ))
-
- ;; skip unsplittable frames and frames that have dedicated windows.
- ;; create a new splittable frame if none is found
- (defun ediff-skip-unsuitable-frames (&optional ok-unsplittable)
- (if (ediff-window-display-p)
- (let (last-window)
- (while (and (not (eq (selected-window) last-window))
- (or
- (ediff-frame-has-dedicated-windows (selected-frame))
- (ediff-frame-iconified-p (selected-frame))
- (< (frame-height (selected-frame))
- (* 3 window-min-height))
- (if ok-unsplittable
- nil
- (ediff-frame-unsplittable-p (selected-frame)))))
- ;; remember where started
- (or last-window (setq last-window (selected-window)))
- ;; try new window
- (other-window 1 t))
- (if (eq (selected-window) last-window)
- ;; fed up, no appropriate frame
- (progn
- (select-frame (make-frame '((unsplittable)))))))))
-
- (defun ediff-frame-has-dedicated-windows (frame)
- (let ((cur-fr (selected-frame))
- ans)
- (select-frame frame)
- (walk-windows
- (function (lambda (wind)
- (if (window-dedicated-p wind)
- (setq ans t))))
- 'ignore-minibuffer
- frame)
- (select-frame cur-fr)
- ans))
-
- ;; window is ok, if it is only one window on the frame, not counting the
- ;; minibuffer, or none of the frame's windows is dedicated.
- ;; The idea is that it is bad to destroy dedicated windows while creating an
- ;; ediff window setup
- (defun ediff-window-ok-for-display (wind)
- (and
- (window-live-p wind)
- (or
- ;; only one window
- (eq wind (next-window wind 'ignore-minibuffer (window-frame wind)))
- ;; none is dedicated
- (not (ediff-frame-has-dedicated-windows (window-frame wind)))
- )))
-
- ;; Prepare or refresh control frame
- (defun ediff-setup-control-frame (ctl-buffer designated-minibuffer-frame)
- (let ((window-min-height 1)
- ctl-frame-iconified-p dont-iconify-ctl-frame deiconify-ctl-frame
- ctl-frame old-ctl-frame lines
- ;; user-grabbed-mouse
- fheight fwidth adjusted-parameters)
-
- (ediff-eval-in-buffer ctl-buffer
- (if ediff-xemacs-p (set-buffer-menubar nil))
- ;;(setq user-grabbed-mouse (ediff-user-grabbed-mouse))
- (run-hooks 'ediff-before-setup-control-frame-hook))
-
- (setq old-ctl-frame (ediff-eval-in-buffer ctl-buffer ediff-control-frame))
- (ediff-eval-in-buffer ctl-buffer
- (setq ctl-frame (if (frame-live-p old-ctl-frame)
- old-ctl-frame
- (make-frame ediff-control-frame-parameters))
- ediff-control-frame ctl-frame))
-
- (setq ctl-frame-iconified-p (ediff-frame-iconified-p ctl-frame))
- (select-frame ctl-frame)
- (if (window-dedicated-p (selected-window))
- ()
- (delete-other-windows)
- (switch-to-buffer ctl-buffer))
-
- ;; must be before ediff-setup-control-buffer
- ;; just a precaution--we should be in ctl-buffer already
- (ediff-eval-in-buffer ctl-buffer
- (make-local-variable 'frame-title-format)
- (make-local-variable 'frame-icon-title-format) ; XEmacs
- (make-local-variable 'icon-title-format)) ; Emacs
-
- (ediff-setup-control-buffer ctl-buffer)
- (setq dont-iconify-ctl-frame
- (not (string= ediff-help-message ediff-brief-help-message)))
- (setq deiconify-ctl-frame
- (and (eq this-command 'ediff-toggle-help)
- dont-iconify-ctl-frame))
-
- ;; 1 more line for the modeline
- (setq lines (1+ (count-lines (point-min) (point-max)))
- fheight lines
- fwidth (+ (ediff-help-message-line-length) 2)
- adjusted-parameters (append (list
- ;; possibly change surrogate minibuffer
- (cons 'minibuffer
- (minibuffer-window
- designated-minibuffer-frame))
- (cons 'width fwidth)
- (cons 'height fheight))
- (funcall
- ediff-control-frame-position-function
- ctl-buffer fwidth fheight)))
- (if ediff-use-long-help-message
- (setq adjusted-parameters
- (cons '(auto-raise . nil) adjusted-parameters)))
-
- ;; In XEmacs, buffer menubar needs to be killed before frame parameters
- ;; are changed.
- (if ediff-xemacs-p
- (progn
- (set-specifier top-toolbar-height (list ctl-frame 0))
- (set-specifier bottom-toolbar-height (list ctl-frame 0))
- (set-specifier left-toolbar-width (list ctl-frame 0))
- (set-specifier right-toolbar-width (list ctl-frame 0))
- ;; XEmacs needed a redisplay, as it had trouble setting
- ;; height correctly otherwise.
- ;;(sit-for 0)
- ))
-
- ;; Under OS/2 (emx) we have to call modify frame parameters twice, in order
- ;; to make sure that at least once we do it for non-iconified frame. If
- ;; appears that in the OS/2 port of Emacs, one can't modify frame
- ;; parameters of iconified frames. As a precaution, we do likewise for
- ;; windows-nt.
- (if (memq system-type '(emx windows-nt windows-95))
- (modify-frame-parameters ctl-frame adjusted-parameters))
-
- (goto-char (point-min))
-
- (modify-frame-parameters ctl-frame adjusted-parameters)
- (make-frame-visible ctl-frame)
-
- ;; This works around a bug in 19.25 and earlier. There, if frame gets
- ;; iconified, the current buffer changes to that of the frame that
- ;; becomes exposed as a result of this iconification.
- ;; So, we make sure the current buffer doesn't change.
- (select-frame ctl-frame)
- (ediff-refresh-control-frame)
-
- (cond ((and ediff-prefer-iconified-control-frame
- (not ctl-frame-iconified-p) (not dont-iconify-ctl-frame))
- (iconify-frame ctl-frame))
- ((or deiconify-ctl-frame (not ctl-frame-iconified-p))
- (raise-frame ctl-frame)))
-
- (set-window-dedicated-p (selected-window) t)
-
- ;; synchronize so the cursor will move to control frame
- ;; per RMS suggestion
- (if (ediff-window-display-p)
- (let ((count 7))
- (sit-for .1)
- (while (and (not (frame-visible-p ctl-frame)) (> count 0))
- (setq count (1- count))
- (sit-for .3))))
-
- (or (ediff-frame-iconified-p ctl-frame)
- ;; don't warp the mouse, unless ediff-grab-mouse = t
- (ediff-reset-mouse ctl-frame
- (or (eq this-command 'ediff-quit)
- (not (eq ediff-grab-mouse t)))))
-
- (if ediff-xemacs-p
- (ediff-eval-in-buffer ctl-buffer
- (make-local-hook 'select-frame-hook)
- (add-hook 'select-frame-hook 'ediff-xemacs-select-frame-hook nil t)
- ))
-
- (ediff-eval-in-buffer ctl-buffer
- (run-hooks 'ediff-after-setup-control-frame-hook))
- ))
-
- (defun ediff-destroy-control-frame (ctl-buffer)
- (ediff-eval-in-buffer ctl-buffer
- (if (and (ediff-window-display-p) (frame-live-p ediff-control-frame))
- (let ((ctl-frame ediff-control-frame))
- (if ediff-xemacs-p
- (set-buffer-menubar default-menubar))
- (setq ediff-control-frame nil)
- (delete-frame ctl-frame)
- )))
- (ediff-skip-unsuitable-frames)
- ;;(ediff-reset-mouse nil)
- )
-
-
- ;; finds a good place to clip control frame
- (defun ediff-make-frame-position (ctl-buffer ctl-frame-width ctl-frame-height)
- (ediff-eval-in-buffer ctl-buffer
- (let* ((frame-A (window-frame ediff-window-A))
- (frame-A-parameters (frame-parameters frame-A))
- (frame-A-top (eval (cdr (assoc 'top frame-A-parameters))))
- (frame-A-left (eval (cdr (assoc 'left frame-A-parameters))))
- (frame-A-width (frame-width frame-A))
- (ctl-frame ediff-control-frame)
- horizontal-adjustment upward-adjustment
- ctl-frame-top ctl-frame-left)
-
- ;; Multiple control frames are clipped based on the value of
- ;; ediff-control-buffer-number. This is done in order not to obscure
- ;; other active control panels.
- (setq horizontal-adjustment (* 2 ediff-control-buffer-number)
- upward-adjustment (* -14 ediff-control-buffer-number))
-
- (setq ctl-frame-top
- (- frame-A-top upward-adjustment ediff-control-frame-upward-shift)
- ctl-frame-left
- (+ frame-A-left
- (if ediff-use-long-help-message
- (* (ediff-frame-char-width ctl-frame)
- (+ ediff-wide-control-frame-rightward-shift
- horizontal-adjustment))
- (- (* frame-A-width (ediff-frame-char-width frame-A))
- (* (ediff-frame-char-width ctl-frame)
- (+ ctl-frame-width
- ediff-narrow-control-frame-leftward-shift
- horizontal-adjustment))))))
- (setq ctl-frame-top
- (min ctl-frame-top
- (- (ediff-display-pixel-height)
- (* 2 ctl-frame-height
- (ediff-frame-char-height ctl-frame))))
- ctl-frame-left
- (min ctl-frame-left
- (- (ediff-display-pixel-width)
- (* ctl-frame-width (ediff-frame-char-width ctl-frame)))))
- ;; keep ctl frame within the visible bounds
- (setq ctl-frame-top (max ctl-frame-top 1)
- ctl-frame-left (max ctl-frame-left 1))
-
- (list (cons 'top ctl-frame-top)
- (cons 'left ctl-frame-left))
- )))
-
- (defun ediff-xemacs-select-frame-hook ()
- (if (and (equal (selected-frame) ediff-control-frame)
- (not ediff-use-long-help-message))
- (raise-frame ediff-control-frame)))
-
- (defun ediff-make-wide-display ()
- "Construct an alist of parameters for the wide display.
- Saves the old frame parameters in `ediff-wide-display-orig-parameters'.
- The frame to be resized is kept in `ediff-wide-display-frame'.
- This function modifies only the left margin and the width of the display.
- It assumes that it is called from within the control buffer."
- (if (not (fboundp 'ediff-display-pixel-width))
- (error "Can't determine display width."))
- (let* ((frame-A (window-frame ediff-window-A))
- (frame-A-params (frame-parameters frame-A))
- (cw (ediff-frame-char-width frame-A))
- (wd (- (/ (ediff-display-pixel-width) cw) 5)))
- (setq ediff-wide-display-orig-parameters
- (list (cons 'left (max 0 (eval (cdr (assoc 'left frame-A-params)))))
- (cons 'width (cdr (assoc 'width frame-A-params))))
- ediff-wide-display-frame frame-A)
- (modify-frame-parameters frame-A (list (cons 'left cw)
- (cons 'width wd)))))
-
-
-
- ;; Revise the mode line to display which difference we have selected
- ;; Also resets modelines of buffers A/B, since they may be clobbered by
- ;; anothe invocations of Ediff.
- (defun ediff-refresh-mode-lines ()
- (let (buf-A-state-diff buf-B-state-diff buf-C-state-diff buf-C-state-merge)
-
- (if (ediff-valid-difference-p)
- (setq
- buf-C-state-diff (ediff-get-state-of-diff ediff-current-difference 'C)
- buf-C-state-merge (ediff-get-state-of-merge ediff-current-difference)
- buf-A-state-diff (ediff-get-state-of-diff ediff-current-difference 'A)
- buf-B-state-diff (ediff-get-state-of-diff ediff-current-difference 'B)
- buf-A-state-diff (if buf-A-state-diff
- (format "[%s] " buf-A-state-diff)
- "")
- buf-B-state-diff (if buf-B-state-diff
- (format "[%s] " buf-B-state-diff)
- "")
- buf-C-state-diff (if (and (ediff-buffer-live-p ediff-buffer-C)
- (or buf-C-state-diff buf-C-state-merge))
- (format "[%s%s%s] "
- (or buf-C-state-diff "")
- (if buf-C-state-merge
- (concat " " buf-C-state-merge)
- "")
- (if (ediff-get-state-of-ancestor
- ediff-current-difference)
- " AncestorEmpty"
- "")
- )
- ""))
- (setq buf-A-state-diff ""
- buf-B-state-diff ""
- buf-C-state-diff ""))
-
- ;; control buffer format
- (setq mode-line-format
- (list (if (ediff-narrow-control-frame-p) " " "-- ")
- mode-line-buffer-identification
- " Quick Help"))
- ;; control buffer id
- (setq mode-line-buffer-identification
- (if (ediff-narrow-control-frame-p)
- (ediff-make-narrow-control-buffer-id 'skip-name)
- (ediff-make-wide-control-buffer-id)))
- ;; Force mode-line redisplay
- (force-mode-line-update)
-
- (if (and (ediff-window-display-p) (frame-live-p ediff-control-frame))
- (ediff-refresh-control-frame))
-
- (ediff-eval-in-buffer ediff-buffer-A
- (setq ediff-diff-status buf-A-state-diff)
- (ediff-strip-mode-line-format)
- (setq mode-line-format
- (list " A: " 'ediff-diff-status mode-line-format))
- (force-mode-line-update))
- (ediff-eval-in-buffer ediff-buffer-B
- (setq ediff-diff-status buf-B-state-diff)
- (ediff-strip-mode-line-format)
- (setq mode-line-format
- (list " B: " 'ediff-diff-status mode-line-format))
- (force-mode-line-update))
- (if ediff-3way-job
- (ediff-eval-in-buffer ediff-buffer-C
- (setq ediff-diff-status buf-C-state-diff)
- (ediff-strip-mode-line-format)
- (setq mode-line-format
- (list " C: " 'ediff-diff-status mode-line-format))
- (force-mode-line-update)))
- (if (ediff-buffer-live-p ediff-ancestor-buffer)
- (ediff-eval-in-buffer ediff-ancestor-buffer
- (ediff-strip-mode-line-format)
- ;; we keep the second dummy string in the mode line format of the
- ;; ancestor, since for other buffers Ediff prepends 2 strings and
- ;; ediff-strip-mode-line-format expects that.
- (setq mode-line-format
- (list " Ancestor: "
- (cond ((not (stringp buf-C-state-merge))
- "")
- ((string-match "prefer-A" buf-C-state-merge)
- "[=diff(B)] ")
- ((string-match "prefer-B" buf-C-state-merge)
- "[=diff(A)] ")
- (t ""))
- mode-line-format))))
- ))
-
-
- (defun ediff-refresh-control-frame ()
- (if ediff-emacs-p
- ;; set frame/icon titles for Emacs
- (modify-frame-parameters
- ediff-control-frame
- (list (cons 'title (ediff-make-base-title))
- (cons 'icon-name (ediff-make-narrow-control-buffer-id))
- ))
- ;; set frame/icon titles for XEmacs
- (setq frame-title-format (ediff-make-base-title)
- frame-icon-title-format (ediff-make-narrow-control-buffer-id))
- ;; force an update of the frame title
- (modify-frame-parameters ediff-control-frame '(()))))
-
-
- (defun ediff-make-narrow-control-buffer-id (&optional skip-name)
- (concat
- (if skip-name
- " "
- (ediff-make-base-title))
- (cond ((< ediff-current-difference 0)
- (format " _/%d" ediff-number-of-differences))
- ((>= ediff-current-difference ediff-number-of-differences)
- (format " $/%d" ediff-number-of-differences))
- (t
- (format " %d/%d"
- (1+ ediff-current-difference)
- ediff-number-of-differences)))))
-
- (defun ediff-make-base-title ()
- (concat
- (cdr (assoc 'name ediff-control-frame-parameters))
- ediff-control-buffer-suffix))
-
- (defun ediff-make-wide-control-buffer-id ()
- (cond ((< ediff-current-difference 0)
- (list (format "%%b At start of %d diffs"
- ediff-number-of-differences)))
- ((>= ediff-current-difference ediff-number-of-differences)
- (list (format "%%b At end of %d diffs"
- ediff-number-of-differences)))
- (t
- (list (format "%%b diff %d of %d"
- (1+ ediff-current-difference)
- ediff-number-of-differences)))))
-
-
-
- ;; If buff is not live, return nil
- (defun ediff-get-visible-buffer-window (buff)
- (if (ediff-buffer-live-p buff)
- (if ediff-xemacs-p
- (get-buffer-window buff t)
- (get-buffer-window buff 'visible))))
-
-
- ;;; Functions to decide when to redraw windows
-
- (defun ediff-keep-window-config (control-buf)
- (and (eq control-buf (current-buffer))
- (/= (buffer-size) 0)
- (ediff-eval-in-buffer control-buf
- (let ((ctl-wind ediff-control-window)
- (A-wind ediff-window-A)
- (B-wind ediff-window-B)
- (C-wind ediff-window-C))
-
- (and
- (ediff-window-visible-p A-wind)
- (ediff-window-visible-p B-wind)
- ;; if buffer C is defined then take it into account
- (or (not ediff-3way-job)
- (ediff-window-visible-p C-wind))
- (eq (window-buffer A-wind) ediff-buffer-A)
- (eq (window-buffer B-wind) ediff-buffer-B)
- (or (not ediff-3way-job)
- (eq (window-buffer C-wind) ediff-buffer-C))
- (string= ediff-window-config-saved
- (format "%S%S%S%S%S%S%S"
- ctl-wind A-wind B-wind C-wind
- ediff-split-window-function
- (ediff-multiframe-setup-p)
- ediff-wide-display-p)))))))
-
-
- ;;; Local Variables:
- ;;; eval: (put 'ediff-defvar-local 'lisp-indent-hook 'defun)
- ;;; eval: (put 'ediff-eval-in-buffer 'lisp-indent-hook 1)
- ;;; End:
-
- (provide 'ediff-wind)
-
-
- ;;; ediff-wind.el ends here
-