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[xemacs-hg @ 2002-05-16 13:30:23 by ben] ui fixes for things that were bothering me bytecode.c, editfns.c, lisp.h, lread.c: Fix save-restriction to use markers rather than pseudo-markers (integers representing the amount of text on either side of the region). That way, all inserts are handled correctly, not just those inside old restriction. Add buffer argument to save_restriction_save(). process.c: Clean up very dirty and kludgy code that outputs into a buffer -- use proper unwind protects, etc. font-lock.c: Do save-restriction/widen around the function -- otherwise, incorrect results will ensue when a buffer has been narrowed before a call to e.g. `buffer-syntactic-context' -- something that happens quite often. fileio.c: Look for a handler for make-temp-name. window.c, winslots.h: Try to solve this annoying problem: have two frames displaying the buffer, in different places; in one, temporarily switch away to another buffer and then back -- and you've lost your position; it's reset to the other one in the other frame. My current solution involves window-level caches of buffers and points (also a cache for window-start); when set-window-buffer is called, it looks to see if the buffer was previously visited in the window, and if so, uses the most recent point at that time. (It's a marker, so it handles changes.) #### Note: It could be argued that doing it on the frame level would be better -- e.g. if you visit a buffer temporarily through a grep, and then go back to that buffer, you presumably want the grep's position rather than some previous position provided everything was in the same frame, even though the grep was in another window in the frame. However, doing it on the frame level fails when you have two windows on the same frame. Perhaps we keep both a window and a frame cache, and use the frame cache if there are no other windows on the frame showing the buffer, else the window's cache? This is probably something to be configurable using a specifier. Suggestions please please please? window.c: Clean up a bit code that deals with the annoyance of window-point vs. point. dialog.el: Function to ask a multiple-choice question, automatically choosing a dialog box or minibuffer representation as necessary. Generalized version of yes-or-no-p, y-or-n-p. files.el: Use get-user-response to ask "yes/no/diff" question when recovering. "diff" means that a diff is displayed between the current file and the autosave. (Converts/deconverts escape-quoted as necessary. No more complaints from you, Mr. Turnbull!) One known problem: when a dialog is used, it's modal, so you can't scroll the diff. Will fix soon. lisp-mode.el: If we're filling a string, don't treat semicolon as a comment, which would give very unfriendly results. Uses `buffer-syntactic-context'. simple.el: all changes back to the beginning. (Useful if you've saved the file in the middle of the changes.) simple.el: Add option kill-word-into-kill-ring, which controls whether words deleted with kill-word, backward-kill-word, etc. are "cut" into the kill ring, or "cleared" into nothingness. (My preference is the latter, by far. I'd almost go so far as suggesting we make it the default, as you can always select a word and then cut it if you want it cut.) menubar-items.el: Add option corresponding to kill-word-into-kill-ring.
author ben
date Thu, 16 May 2002 13:30:58 +0000
parents abe6d1db359e
children e1bc252950d9
line wrap: on
line source

;;; objects.el --- Lisp interface to C window-system objects

;; Copyright (C) 1994, 1997 Free Software Foundation, Inc.
;; Copyright (C) 1995 Ben Wing

;; Author: Chuck Thompson <cthomp@xemacs.org>
;; Author: Ben Wing <ben@xemacs.org>
;; Maintainer: XEmacs Development Team
;; Keywords: faces, internal, dumped

;; 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, 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, USA.

;;; Synched up with: Not in FSF.

;;; Commentary:

;; This file is dumped with XEmacs.

;;; Code:

(defun ws-object-property-1 (function object domain &optional matchspec)
  (let ((instance (if matchspec
		      (specifier-matching-instance object matchspec domain)
		    (specifier-instance object domain))))
    (and instance (funcall function instance))))

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; font specifiers

(defun make-font-specifier (spec-list)
  "Return a new `font' specifier object with the given specification list.
SPEC-LIST can be a list of specifications (each of which is a cons of a
locale and a list of instantiators), a single instantiator, or a list
of instantiators.  See `make-specifier' for more information about
specifiers.

Valid instantiators for font specifiers are:

-- a string naming a font (e.g. under X this might be
   \"-*-courier-medium-r-*-*-*-140-*-*-*-*-iso8859-*\" for a 14-point
   upright medium-weight Courier font)
-- a font instance (use that instance directly if the device matches,
   or use the string that generated it)
-- a vector of no elements (only on TTY's; this means to set no font
   at all, thus using the \"natural\" font of the terminal's text)
-- a vector of one element (a face to inherit from)
"
  (make-specifier-and-init 'font spec-list))

(defun font-name (font &optional domain charset)
  "Return the name of the FONT in the specified DOMAIN, if any.
FONT should be a font specifier object and DOMAIN is normally a window
and defaults to the selected window if omitted.  This is equivalent
to using `specifier-instance' and applying `font-instance-name' to
the result.  See `make-specifier' for more information about specifiers."
  (ws-object-property-1 'font-instance-name font domain charset))

(defun font-ascent (font &optional domain charset)
  "Return the ascent of the FONT in the specified DOMAIN, if any.
FONT should be a font specifier object and DOMAIN is normally a window
and defaults to the selected window if omitted.  This is equivalent
to using `specifier-instance' and applying `font-instance-ascent' to
the result.  See `make-specifier' for more information about specifiers."
  (ws-object-property-1 'font-instance-ascent font domain charset))

(defun font-descent (font &optional domain charset)
  "Return the descent of the FONT in the specified DOMAIN, if any.
FONT should be a font specifier object and DOMAIN is normally a window
and defaults to the selected window if omitted.  This is equivalent
to using `specifier-instance' and applying `font-instance-descent' to
the result.  See `make-specifier' for more information about specifiers."
  (ws-object-property-1 'font-instance-descent font domain charset))

(defun font-width (font &optional domain charset)
  "Return the width of the FONT in the specified DOMAIN, if any.
FONT should be a font specifier object and DOMAIN is normally a window
and defaults to the selected window if omitted.  This is equivalent
to using `specifier-instance' and applying `font-instance-width' to
the result.  See `make-specifier' for more information about specifiers."
  (ws-object-property-1 'font-instance-width font domain charset))

(defun font-height (font &optional domain charset)
  "Return the height of the FONT in the specified DOMAIN, if any.
FONT should be a font specifier object and DOMAIN is normally a window
and defaults to the selected window if omitted.  This is equivalent
to using `specifier-instance' and applying `font-instance-height' to
the result.  See `make-specifier' for more information about specifiers."
  (ws-object-property-1 'font-instance-height font domain charset))

(defun font-proportional-p (font &optional domain charset)
  "Return whether FONT is proportional in the specified DOMAIN, if known.
FONT should be a font specifier object and DOMAIN is normally a window
and defaults to the selected window if omitted.  This is equivalent
to using `specifier-instance' and applying `font-instance-proportional-p' to
the result.  See `make-specifier' for more information about specifiers."
  (ws-object-property-1 'font-instance-proportional-p font domain charset))

(defun font-properties (font &optional domain charset)
  "Return the properties of the FONT in the specified DOMAIN, if any.
FONT should be a font specifier object and DOMAIN is normally a window
and defaults to the selected window if omitted.  This is equivalent
to using `specifier-instance' and applying `font-instance-properties'
to the result.  See `make-specifier' for more information about specifiers."
  (ws-object-property-1 'font-instance-properties font domain charset))

(defun font-truename (font &optional domain charset)
  "Return the truename of the FONT in the specified DOMAIN, if any.
FONT should be a font specifier object and DOMAIN is normally a window
and defaults to the selected window if omitted.  This is equivalent
to using `specifier-instance' and applying `font-instance-truename'
to the result.  See `make-specifier' for more information about specifiers."
  (ws-object-property-1 'font-instance-truename font domain charset))

(defun font-instance-height (font-instance)
  "Return the height in pixels of FONT-INSTANCE.
The returned value is the maximum height for all characters in the font,\n\
and is equivalent to the sum of the font instance's ascent and descent."
  (+ (font-instance-ascent font-instance)
     (font-instance-descent font-instance)))

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; color specifiers

(defun make-color-specifier (spec-list)
  "Return a new `color' specifier object with the given specification list.
SPEC-LIST can be a list of specifications (each of which is a cons of a
locale and a list of instantiators), a single instantiator, or a list
of instantiators.  See `make-specifier' for a detailed description of
how specifiers work.

Valid instantiators for color specifiers are:

-- a string naming a color (e.g. under X this might be \"lightseagreen2\"
   or \"#F534B2\")
-- a color instance (use that instance directly if the device matches,
   or use the string that generated it)
-- a vector of no elements (only on TTY's; this means to set no color
   at all, thus using the \"natural\" color of the terminal's text)
-- a vector of one or two elements: a face to inherit from, and
   optionally a symbol naming which property of that face to inherit,
   either `foreground' or `background' (if omitted, defaults to the same
   property that this color specifier is used for; if this specifier is
   not part of a face, the instantiator would not be valid)."
  (make-specifier-and-init 'color spec-list))

(defun color-name (color &optional domain)
  "Return the name of the COLOR in the specified DOMAIN, if any.
COLOR should be a color specifier object and DOMAIN is normally a window
and defaults to the selected window if omitted.  This is equivalent
to using `specifier-instance' and applying `color-instance-name' to
the result.  See `make-specifier' for more information about specifiers."
  (ws-object-property-1 'color-instance-name color domain))

(defun color-rgb-components (color &optional domain)
  "Return the RGB components of the COLOR in the specified DOMAIN, if any.
COLOR should be a color specifier object and DOMAIN is normally a window
and defaults to the selected window if omitted.  This is equivalent
to using `specifier-instance' and applying `color-instance-rgb-components'
to the result.  See `make-specifier' for more information about specifiers."
  (ws-object-property-1 'color-instance-rgb-components color domain))

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; face-boolean specifiers

(defun make-face-boolean-specifier (spec-list)
  "Return a new `face-boolean' specifier object with the given spec list.
SPEC-LIST can be a list of specifications (each of which is a cons of a
locale and a list of instantiators), a single instantiator, or a list
of instantiators.  See `make-specifier' for a detailed description of
how specifiers work.

Valid instantiators for face-boolean specifiers are

-- t or nil
-- a vector of two or three elements: a face to inherit from,
   optionally a symbol naming the property of that face to inherit from
   (if omitted, defaults to the same property that this face-boolean
   specifier is used for; if this specifier is not part of a face,
   the instantiator would not be valid), and optionally a value which,
   if non-nil, means to invert the sense of the inherited property."
  (make-specifier-and-init 'color spec-list))

;;; objects.el ends here.