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- ;;; annotations.el --- interface to marginal annotations
-
- ;; Copyright (C) 1992-1994 Free Software Foundation, Inc.
- ;;
- ;; Created: 10-Oct-93, Chuck Thompson <cthomp@cs.uiuc.edu>
- ;; Keywords: extensions, hypermedia, outlining
- ;; Enhanced by Andy Piper <ajp@eng.cam.ac.uk>: 6-may-94
- ;;
- ;; Last modified: 12-May-95 by Chuck Thompson.
-
- ;; This file is part of XEmacs.
-
- ;; XEmacs 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.
-
- ;; XEmacs 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 XEmacs; see the file COPYING. If not, write to the
- ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- ;; Boston, MA 02111-1307, USA.
-
- ;;; Synched up with: Not in FSF.
-
- ;;
- ;; The annotations are implemented on top of extents. The extent property
- ;; 'annotation of an extent being used as an annotation is vector of size 6:
- ;; [<data> <action> <menu> <glyph> <down-glyph> <rightp>]
- ;;
-
- ;;;###autoload
- (defvar make-annotation-hook nil
- "*Function or functions to run immediately after creating an annotation.")
-
- ;;;###autoload
- (defvar before-delete-annotation-hook nil
- "*Function or functions to run immediately before deleting an annotation.")
-
- ;;;###autoload
- (defvar after-delete-annotation-hook nil
- "*Function or functions to run immediately after deleting an annotation.")
-
- (defvar annotation-local-map-default
- (let ((map (make-sparse-keymap)))
- (set-keymap-name map 'annotation-local-map)
- (define-key map 'button1 'annotation-activate-function-default)
- (define-key map 'button3 'annotation-popup-menu)
- map)
- "Keymap used to activate annotations with only annotation data passed.")
-
- (defvar annotation-local-map-with-event
- (let ((map (make-sparse-keymap)))
- (set-keymap-name map 'annotation-local-map)
- (define-key map 'button1 'annotation-activate-function-with-event)
- (define-key map 'button3 'annotation-popup-menu)
- map)
- "Keymap used to activate annotations with annotation data and event passed.")
-
- ;;
- ;; When the mouse is pressed and released over an annotation glyph
- ;; this will run the annotation action passing a single arg, the value
- ;; of the annotation data field.
- ;;
- (defun annotation-activate-function-default (event)
- (interactive "e")
- (let ((extent (event-glyph-extent event))
- (mouse-down t)
- (up-glyph nil))
- ;; make the glyph look pressed
- (cond ((annotation-down-glyph extent)
- (setq up-glyph (annotation-glyph extent))
- (set-annotation-glyph extent (annotation-down-glyph extent))))
- (while mouse-down
- (setq event (next-event event))
- (if (button-release-event-p event)
- (setq mouse-down nil)))
- ;; make the glyph look released
- (cond ((annotation-down-glyph extent)
- (set-annotation-glyph extent up-glyph)))
- (if (eq extent (event-glyph-extent event))
- (if (annotation-action extent)
- (funcall (annotation-action extent) (annotation-data extent))))))
-
- ;;
- ;; When the mouse is pressed and released over an annotation glyph
- ;; this will run the annotation action passing two args, the value
- ;; of the annotation data field and the event which triggered the
- ;; annotation.
- ;;
- (defun annotation-activate-function-with-event (event)
- (interactive "e")
- (let ((extent (event-glyph-extent event))
- (mouse-down t)
- (up-glyph nil))
- ;; make the glyph look pressed
- (cond ((annotation-down-glyph extent)
- (setq up-glyph (annotation-glyph extent))
- (set-annotation-glyph extent (annotation-down-glyph extent))))
- (while mouse-down
- (setq event (next-event event))
- (if (button-release-event-p event)
- (setq mouse-down nil)))
- ;; make the glyph look released
- (cond ((annotation-down-glyph extent)
- (set-annotation-glyph extent up-glyph)))
- (if (eq extent (event-glyph-extent event))
- (if (annotation-action extent)
- (funcall (annotation-action extent) (annotation-data extent)
- event)))))
-
- ;; #### Glyphs should be glyphs should be glyphs
- ;;;###autoload
- (defun make-annotation (glyph &optional pos layout buffer with-event d-glyph rightp)
- "Create a marginal annotation, displayed using GLYPH, at position POS.
- GLYPH may be either a glyph object or a string. Use layout policy
- LAYOUT and place the annotation in buffer BUFFER. If POS is nil, point is
- used. If LAYOUT is nil, `whitespace' is used. If BUFFER is nil, the
- current buffer is used. If WITH-EVENT is non-nil, then when an annotation
- is activated, the triggering event is passed as the second arg to the
- annotation function. If D-GLYPH is non-nil then it is used as the glyph
- that will be displayed when button1 is down. If RIGHTP is non-nil then
- the glyph will be displayed on the right side of the buffer instead of the
- left."
- (let ((new-annotation))
- ;; get the buffer to add the annotation at
- (if (not buffer)
- (setq buffer (current-buffer))
- (setq buffer (get-buffer buffer)))
- ;; get the position to put it at
- (if (not pos)
- (save-excursion
- (set-buffer buffer)
- (setq pos (point))))
- ;; make sure it gets some layout policy
- (if (not layout)
- (setq layout 'whitespace))
-
- ;; make sure the glyph arguments are actually glyphs
- (if (and glyph (not (glyphp glyph)))
- (setq glyph (make-glyph glyph)))
- (if (and d-glyph (not (glyphp d-glyph)))
- (setq d-glyph (make-glyph d-glyph)))
-
- ;; create the actual annotation
- (setq new-annotation (make-extent pos pos buffer))
- (detach-extent new-annotation)
- (set-extent-endpoints new-annotation pos pos)
- (if rightp
- (set-extent-end-glyph new-annotation glyph layout)
- (set-extent-begin-glyph new-annotation glyph layout))
- (set-extent-property new-annotation 'annotation
- (vector nil nil nil glyph d-glyph rightp))
- (set-extent-property new-annotation 'end-closed t)
- (set-extent-property new-annotation 'start-open t)
- (set-extent-property new-annotation 'duplicable t)
- (if with-event
- (set-extent-property new-annotation 'keymap
- annotation-local-map-with-event)
- (set-extent-property new-annotation 'keymap
- annotation-local-map-default))
- (run-hook-with-args 'make-annotation-hook new-annotation)
- new-annotation))
-
- (fset 'make-graphic-annotation 'make-annotation)
- (make-obsolete 'make-graphic-annotation 'make-annotation)
-
- ;;;###autoload
- (defun delete-annotation (annotation)
- "Remove ANNOTATION from its buffer. This does not modify the buffer text."
- (if (not (annotationp annotation))
- (error "%s is not an annotation" annotation)
- (progn
- (run-hook-with-args 'before-delete-annotation-hook annotation)
- (delete-extent annotation)
- (run-hooks 'after-delete-annotation-hook))))
-
- ;;;###autoload
- (defun annotationp (annotation)
- "T if OBJECT is an annotation."
- (and (extent-live-p annotation)
- (not (null (extent-property annotation 'annotation)))))
-
- (defun annotation-visible (annotation)
- "T if there is enough available space to display ANNOTATION."
- (if (not (annotationp annotation))
- (error "%s is not an annotation" annotation)
- (not (extent-property annotation 'glyph-invisible))))
-
- ;;;###autoload
- (defun annotation-at (&optional pos buffer)
- "Return the first annotation at POS in BUFFER.
- BUFFER defaults to the current buffer. POS defaults to point in BUFFER."
- (car (annotations-at pos buffer)))
- (make-obsolete 'annotation-at 'annotations-at)
-
- (defun annotation-layout (annotation)
- "Return the layout policy of annotation ANNOTATION. The layout policy
- is set using `set-annotation-layout'."
- (if (not (annotationp annotation))
- (error "%s is not an annotation" annotation)
- (if (eq 'right (annotation-side annotation))
- (extent-end-glyph-layout annotation)
- (extent-begin-glyph-layout annotation))))
-
-
- (defun annotation-side (annotation)
- "Return the side of the buffer the annotation is displayed on.
- Return value is either 'left or 'right."
- (if (aref (extent-property annotation 'annotation) 5)
- 'right
- 'left))
-
- (defun set-annotation-layout (annotation layout)
- "Set the layout policy of ANNOTATION to LAYOUT. The function
- `annotation-layout' returns the current layout policy."
- (if (not (annotationp annotation))
- (error "%s is not an annotation" annotation)
- (if (eq 'right (annotation-side annotation))
- (set-extent-end-glyph-layout annotation layout)
- (set-extent-begin-glyph-layout annotation layout))))
-
- ;; Now that annotatios use glyphs this function has little value and
- ;; will actually not work as is.
- ;(defun annotation-type (annotation)
- ; "Return the display type of the annotation ANNOTATION. The type will
- ;be one of the following symbols:
- ;
- ; pixmap
- ; bitmap
- ; string
- ; nil (the object is not an annotation)"
- ; (if (not (annotationp annotation))
- ; nil
- ; (let ((glyph (annotation-glyph annotation)))
- ; (if (stringp glyph)
- ; 'stringp
- ; (if (not (pixmapp glyph))
- ; (error "%s is a corrupt annotation" annotation)
- ; (if (> (pixmap-depth glyph) 0)
- ; 'pixmap
- ; 'bitmap))))))
- (make-obsolete 'annotation-type "This function no longer has any meaning.")
-
- (defun annotation-width (annotation)
- "Return the width of the annotation ANNOTATION in pixels."
- (if (not (annotationp annotation))
- (error "%s is not an annotation" annotation)
- (glyph-width (annotation-glyph annotation))))
-
- (defun annotation-glyph (annotation)
- "If ANNOTATION is of type `string' return the string. Otherwise, return
- the glyph object used to display ANNOTATION. The glyph is set using
- `set-annotation-glyph'."
- (if (not (annotationp annotation))
- (error "%s is not an annotation" annotation)
- (aref (extent-property annotation 'annotation) 3)))
-
- (defun set-annotation-glyph (annotation glyph &optional layout side)
- "Set the representation of ANNOTATION to GLYPH.
- GLYPH should be a glyph object. If LAYOUT is non-nil, set the layout
- policy of the annotation to LAYOUT. If SIDE is equal to 'left or 'right
- change the side of the annotation to that value.
- The function `annotation-glyph' returns the current glyph."
- (if (not (annotationp annotation))
- (error "%s is not an annotation" annotation)
- (progn
- (if (not layout)
- (setq layout (extent-layout annotation)))
- (if (or (eq side 'right)
- (and (not (eq side 'left))
- (eq (annotation-side annotation) 'right)))
- (set-extent-end-glyph annotation glyph layout)
- (set-extent-begin-glyph annotation glyph layout))
- (aset (extent-property annotation 'annotation) 3 glyph)
- (if (eq side 'right)
- (aset (extent-property annotation 'annotation) 5 t))
- (if (eq side 'left)
- (aset (extent-property annotation 'annotation) 5 nil))
- (annotation-glyph annotation))))
-
- (defun annotation-down-glyph (annotation)
- "If ANNOTATION is of type `string' return the down string. Otherwise,
- return the glyph object of the down-glyph representing ANNOTATION.
- The down-glyph is set using `set-annotation-down-glyph'."
- (if (not (annotationp annotation))
- (error "%s is not an annotation" annotation)
- (aref (extent-property annotation 'annotation) 4)))
-
- (defun set-annotation-down-glyph (annotation glyph)
- "Set the depressed representation of ANNOTATION to GLYPH.
- GLYPH should be a glyph object.
- The function `annotation-down-glyph' returns the current down-glyph."
- (if (not (annotationp annotation))
- (error "%s is not an annotation" annotation)
- (aset (extent-property annotation 'annotation) 4 glyph)))
-
- (define-obsolete-function-alias 'annotation-graphic 'annotation-glyph)
- (define-obsolete-function-alias 'set-annotation-graphic 'set-annotation-glyph)
-
- (defun annotation-data (annotation)
- "Return the data associated with annotation ANNOTATION. The data is
- set using `set-annotation-data'."
- (if (not (annotationp annotation))
- (error "%s is not an annotation" annotation)
- (aref (extent-property annotation 'annotation) 0)))
-
- (defun set-annotation-data (annotation data)
- "Set the data field of ANNOTATION to DATA.
- The function `annotation-data' returns the current data."
- (if (not (annotationp annotation))
- (error "%s is not an annotation" annotation)
- (aset (extent-property annotation 'annotation) 0 data)))
-
- (defun annotation-action (annotation)
- "Return the action associated with annotation ANNOTATION. The action
- is set using `set-annotation-action'."
- (if (not (annotationp annotation))
- (error "%s is not an annotation" annotation)
- (aref (extent-property annotation 'annotation) 1)))
-
- (defun set-annotation-action (annotation action)
- "Set the action field of ANNOTATION to ACTION.
- The function `annotation-action' returns the current action."
- (if (not (annotationp annotation))
- (error "%s is not an annotation" annotation)
- (aset (extent-property annotation 'annotation) 1 action)))
-
- (defun annotation-face (annotation)
- "Return the face associated with annotation ANNOTATION.
- The face is set using `set-annotation-face'."
- (if (not (annotationp annotation))
- (error "%s is not an annotation" annotation)
- (extent-face annotation)))
-
- (defun set-annotation-face (annotation face)
- "Set the face associated with annotation ANNOTATION to FACE.
- The function `annotation-face' returns the current face."
- (if (not (annotationp annotation))
- (error "%s is not an annotation" annotation)
- (set-extent-face annotation face)))
-
- (defun hide-annotation (annotation)
- "Remove ANNOTATION's glyph so that it is invisible."
- (if (eq (annotation-side annotation) 'left)
- (set-extent-begin-glyph annotation nil)
- (set-extent-end-glyph annotation nil)))
- (define-obsolete-function-alias 'annotation-hide 'hide-annotation)
-
- (defun reveal-annotation (annotation)
- "Add ANNOTATION's glyph so that it is visible."
- (if (eq (annotation-side annotation) 'left)
- (set-extent-begin-glyph annotation (annotation-glyph annotation))
- (set-extent-end-glyph annotation (annotation-glyph annotation))))
- (define-obsolete-function-alias 'annotation-reveal 'reveal-annotation)
-
- ;;;###autoload
- (defun annotations-in-region (start end buffer)
- "Return all annotations in BUFFER between START and END inclusively."
- (save-excursion
- (set-buffer buffer)
-
- (if (< start (point-min))
- (error "<start> not in range of buffer"))
- (if (> end (point-max))
- (error "<end> not in range of buffer"))
-
- (let (note-list)
- (map-extents
- (function (lambda (extent dummy)
- (progn
- (if (annotationp extent)
- (setq note-list (cons extent note-list)))
- nil)))
- buffer start end nil t)
- note-list)))
-
- ;;;###autoload
- (defun annotations-at (&optional pos buffer)
- "Return a list of all annotations at POS in BUFFER.
- If BUFFER is nil, the current buffer is used. If POS is nil, point is used."
- (if (not buffer)
- (setq buffer (current-buffer)))
- (if (not pos)
- (save-excursion
- (set-buffer buffer)
- (setq pos (point))))
-
- (annotations-in-region pos pos buffer)
- )
-
- ;;;###autoload
- (defun annotation-list (&optional buffer)
- "Return a list of all annotations in BUFFER.
- If BUFFER is nil, the current buffer is used."
- (if (not buffer)
- (setq buffer (current-buffer)))
-
- (save-excursion
- (set-buffer buffer)
- (annotations-in-region (point-min) (point-max) buffer)))
-
- ;;;###autoload
- (defun all-annotations ()
- "Return a list of all annotations in existence."
- (let ((b (buffer-list))
- result)
- (while b
- (setq result (nconc result (annotation-list (car b))))
- (setq b (cdr b)))
- result))
-
- ;;; #### really this menus junk should append to the prevailing menu
- ;;; in the same way `popup-mode-menu' does. --jwz
-
- ;; annotations menu stuff
- (defun annotation-popup-menu (event)
- "Pop up a menu of annotations commands.
- Point is temporarily moved to the click position."
- (interactive "e")
- (let ((extent (event-glyph-extent event)))
- (save-excursion
- (goto-char (extent-end-position extent))
- (if (annotation-menu extent)
- (popup-menu (annotation-menu extent))
- (popup-mode-menu)))))
-
- (defun set-annotation-menu (annotation menu)
- "Set the menu field of ANNOTATION to MENU. The function
- `annotation-menu' returns the current menu."
- (if (not (annotationp annotation))
- (error "%s is not an annotation" annotation)
- (aset (extent-property annotation 'annotation) 2 menu)))
-
- (defun annotation-menu (annotation)
- "Return the menu associated with annotation ANNOTATION. The menu
- is set using `set-annotation-menu'."
- (if (not (annotationp annotation))
- (error "%s is not an annotation" annotation)
- (aref (extent-property annotation 'annotation) 2)))
-
- (provide 'annotations)
-