;;; frame.el --- multi-frame management independent of window systems.
-;; Copyright (C) 1993, 1994, 1996, 1997 Free Software Foundation, Inc.
+;; Copyright (C) 1993, 1994, 1996, 1997, 2000 Free Software Foundation, Inc.
;; Maintainer: FSF
;; Keywords: internal
;; when we first made the frame.
(setq parms (cons '(reverse) (delq (assq 'reverse parms) parms)))
(if (assq 'height frame-initial-geometry-arguments)
- (setq parms (assoc-delete-all 'height parms)))
+ (setq parms (assq-delete-all 'height parms)))
(if (assq 'width frame-initial-geometry-arguments)
- (setq parms (assoc-delete-all 'width parms)))
+ (setq parms (assq-delete-all 'width parms)))
(if (assq 'left frame-initial-geometry-arguments)
- (setq parms (assoc-delete-all 'left parms)))
+ (setq parms (assq-delete-all 'left parms)))
(if (assq 'top frame-initial-geometry-arguments)
- (setq parms (assoc-delete-all 'top parms)))
+ (setq parms (assq-delete-all 'top parms)))
(setq new
(make-frame
;; Use the geometry args that created the existing
(setq allparms (append initial-frame-alist
default-frame-alist))
(if (assq 'height frame-initial-geometry-arguments)
- (setq allparms (assoc-delete-all 'height allparms)))
+ (setq allparms (assq-delete-all 'height allparms)))
(if (assq 'width frame-initial-geometry-arguments)
- (setq allparms (assoc-delete-all 'width allparms)))
+ (setq allparms (assq-delete-all 'width allparms)))
(if (assq 'left frame-initial-geometry-arguments)
- (setq allparms (assoc-delete-all 'left allparms)))
+ (setq allparms (assq-delete-all 'left allparms)))
(if (assq 'top frame-initial-geometry-arguments)
- (setq allparms (assoc-delete-all 'top allparms)))
+ (setq allparms (assq-delete-all 'top allparms)))
(setq tail allparms)
;; Find just the parms that have changed since we first
;; made this frame. Those are the ones actually set by
(function (lambda (frame)
(eq frame (window-frame (minibuffer-window frame)))))))
+(defun frames-on-display-list (&optional display)
+ "Return a list of all frames on DISPLAY.
+DISPLAY is a name of a display, a string of the form HOST:SERVER.SCREEN.
+If DISPLAY is omitted or nil, it defaults to the selected frame's display."
+ (let* ((display (or display
+ (cdr (assoc 'display (frame-parameters)))))
+ (func
+ (function (lambda (frame)
+ (eq (cdr (assoc 'display (frame-parameters frame)))
+ display)))))
+ (filtered-frame-list func)))
+
+(defun framep-on-display (&optional display)
+ "Return the type of frames on DISPLAY.
+DISPLAY may be a display name or a frame. If it is a frame, its type is
+returned.
+If DISPLAY is omitted or nil, it defaults to the selected frame's display.
+All frames on a given display are of the same type."
+ (or (framep display)
+ (framep (car (frames-on-display-list display)))))
+
(defun frame-remove-geometry-params (param-list)
"Return the parameter list PARAM-LIST, but with geometry specs removed.
This deletes all bindings in PARAM-LIST for `top', `left', `width',
(while (not (eq (frame-visible-p frame) t))
(setq frame (previous-frame frame)))
(setq arg (1+ arg)))
- (raise-frame frame)
(select-frame frame)
+ (raise-frame frame)
;; Ensure, if possible, that frame gets input focus.
- (if (eq window-system 'w32)
- (w32-focus-frame frame)
- (when focus-follows-mouse
- (set-mouse-position (selected-frame) (1- (frame-width)) 0)))))
+ (when (eq window-system 'w32)
+ (w32-focus-frame frame))
+ (cond (focus-follows-mouse
+ (unless (eq window-system 'w32)
+ (set-mouse-position (selected-frame) (1- (frame-width)) 0)))
+ (t
+ (when (eq window-system 'x)
+ (x-focus-frame frame))))))
(defun make-frame-names-alist ()
(let* ((current-frame (selected-frame))
(modify-frame-parameters (selected-frame)
(list (cons 'name name))))
\f
+;;;; Frame/display capabilities.
+(defun display-mouse-p (&optional display)
+ "Return non-nil if DISPLAY has a mouse available.
+DISPLAY can be a display name, a frame, or nil (meaning the selected
+frame's display)."
+ (let ((frame-type (framep-on-display display)))
+ (cond
+ ((eq frame-type 'pc)
+ (msdos-mouse-p))
+ ((eq system-type 'windows-nt)
+ (> w32-num-mouse-buttons 0))
+ ((memq frame-type '(x mac))
+ t) ;; We assume X and Mac *always* have a pointing device
+ (t
+ (or (and (featurep 'xt-mouse)
+ xterm-mouse-mode)
+ ;; t-mouse is distributed with the GPM package. It doesn't have
+ ;; a toggle.
+ (featurep 't-mouse))))))
+
+(defun display-popup-menus-p (&optional display)
+ "Return non-nil if popup menus are supported on DISPLAY.
+DISPLAY can be a display name, a frame, or nil (meaning the selected
+frame's display).
+Support for popup menus requires that the mouse be available."
+ (and
+ (let ((frame-type (framep-on-display display)))
+ (memq frame-type '(x w32 pc mac)))
+ (display-mouse-p display)))
+
+(defun display-graphic-p (&optional display)
+ "Return non-nil if DISPLAY is a graphic display.
+Graphical displays are those which are capable of displaying several
+frames and several different fonts at once. This is true for displays
+that use a window system such as X, and false for text-only terminals.
+DISPLAY can be a display name, a frame, or nil (meaning the selected
+frame's display)."
+ (not (null (memq (framep-on-display display) '(x w32 mac)))))
+
+(defun display-selections-p (&optional display)
+ "Return non-nil if DISPLAY supports selections.
+A selection is a way to transfer text or other data between programs
+via special system buffers called `selection' or `cut buffer' or
+`clipboard'.
+DISPLAY can be a display name, a frame, or nil (meaning the selected
+frame's display)."
+ (let ((frame-type (framep-on-display display)))
+ (cond
+ ((eq frame-type 'pc)
+ ;; MS-DOG frames support selections when Emacs runs inside
+ ;; the Windows' DOS Box.
+ (not (null dos-windows-version)))
+ ((memq frame-type '(x w32 mac))
+ t) ;; FIXME?
+ (t
+ nil))))
+
+(defun display-screens (&optional display)
+ "Return the number of screens associated with DISPLAY."
+ (let ((frame-type (framep-on-display display)))
+ (cond
+ ((memq frame-type '(x w32))
+ (x-display-screens display))
+ (t ;; FIXME: is this correct for the Mac?
+ 1))))
+
+(defun display-pixel-height (&optional display)
+ "Return the height of DISPLAY's screen in pixels.
+For character terminals, each character counts as a single pixel."
+ (let ((frame-type (framep-on-display display)))
+ (cond
+ ((memq frame-type '(x w32 mac))
+ (x-display-pixel-height display))
+ (t
+ (frame-height (if (framep display) display (selected-frame)))))))
+
+(defun display-pixel-width (&optional display)
+ "Return the width of DISPLAY's screen in pixels.
+For character terminals, each character counts as a single pixel."
+ (let ((frame-type (framep-on-display display)))
+ (cond
+ ((memq frame-type '(x w32 mac))
+ (x-display-pixel-width display))
+ (t
+ (frame-width (if (framep display) display (selected-frame)))))))
+
+(defun display-mm-height (&optional display)
+ "Return the height of DISPLAY's screen in millimeters.
+If the information is unavailable, value is nil."
+ (and (memq (framep-on-display display) '(x w32 mac))
+ (x-display-mm-height display)))
+
+(defun display-mm-width (&optional display)
+ "Return the width of DISPLAY's screen in millimeters.
+If the information is unavailable, value is nil."
+ (and (memq (framep-on-display display) '(x w32 mac))
+ (x-display-mm-width display)))
+
+(defun display-backing-store (&optional display)
+ "Return the backing store capability of DISPLAY's screen.
+The value may be `always', `when-mapped', `not-useful', or nil if
+the question is inapplicable to a certain kind of display."
+ (let ((frame-type (framep-on-display display)))
+ (cond
+ ((memq frame-type '(x w32 mac))
+ (x-display-backing-store display))
+ (t
+ 'not-useful))))
+
+(defun display-save-under (&optional display)
+ "Return non-nil if DISPLAY's screen supports the SaveUnder feature."
+ (let ((frame-type (framep-on-display display)))
+ (cond
+ ((memq frame-type '(x w32 mac))
+ (x-display-save-under display))
+ (t
+ 'not-useful))))
+
+(defun display-planes (&optional display)
+ "Return the number of planes supported by DISPLAY."
+ (let ((frame-type (framep-on-display display)))
+ (cond
+ ((memq frame-type '(x w32 mac))
+ (x-display-planes display))
+ ((eq frame-type 'pc)
+ 4)
+ (t
+ (truncate (log (length (tty-color-alist)) 2))))))
+
+(defun display-color-cells (&optional display)
+ "Return the number of color cells supported by DISPLAY."
+ (let ((frame-type (framep-on-display display)))
+ (cond
+ ((memq frame-type '(x w32 mac))
+ (x-display-color-cells display))
+ ((eq frame-type 'pc)
+ 16)
+ (t
+ (length (tty-color-alist))))))
+
+(defun display-visual-class (&optional display)
+ "Returns the visual class of DISPLAY.
+The value is one of the symbols `static-gray', `gray-scale',
+`static-color', `pseudo-color', `true-color', or `direct-color'."
+ (let ((frame-type (framep-on-display display)))
+ (cond
+ ((memq frame-type '(x w32 mac))
+ (x-display-visual-class display))
+ ((and (memq frame-type '(pc t))
+ (tty-display-color-p display))
+ 'static-color)
+ (t
+ 'static-gray))))
+
+\f
;;;; Aliases for backward compatibility with Emacs 18.
(defalias 'screen-height 'frame-height)
(defalias 'screen-width 'frame-width)
should use `set-frame-height' instead."
(set-frame-height (selected-frame) lines pretend))
+(defun delete-other-frames (&optional frame)
+ "Delete all frames except FRAME.
+FRAME nil or omitted means delete all frames except the selected frame."
+ (interactive)
+ (unless frame
+ (setq frame (selected-frame)))
+ (mapcar 'delete-frame (delq frame (frame-list))))
+
+
(make-obsolete 'screen-height 'frame-height)
(make-obsolete 'screen-width 'frame-width)
(make-obsolete 'set-screen-width 'set-frame-width)
:group 'font-lock)
+\f
+;;; Scrolling
+
+(defgroup scrolling nil
+ "Scrolling windows."
+ :version "21.1"
+ :group 'frames)
+
+(defcustom automatic-hscrolling t
+ "*Allow or disallow autmatic scrolling windows horizontally.
+If non-nil, windows are automatically scrolled horizontally to make
+point visible."
+ :version "21.1"
+ :type 'boolean
+ :group 'scrolling)
+
\f
;;; Blinking cursor
(run-with-idle-timer blink-cursor-delay
blink-cursor-delay
'blink-cursor-start))
- (setq blink-cursor-mode t)))))
+ (setq blink-cursor-mode t))
+ (internal-show-cursor nil t))))
(defcustom blink-cursor (not (eq system-type 'ms-dos))
"*Non-nil means blinking cursor mode is active."
(set-default symbol value)
(setq display-busy-cursor value)))
+(defcustom busy-cursor-delay-seconds 1
+ "*Seconds to wait before displaying a busy-cursor."
+ :tag "Busy-cursor delay"
+ :type 'number
+ :group 'cursor
+ :get #'(lambda (symbol) busy-cursor-delay)
+ :set #'(lambda (symbol value)
+ (set-default symbol value)
+ (setq busy-cursor-delay value)))
+\f
+(defcustom show-cursor-in-non-selected-windows t
+ "*Non-nil means show a hollow box cursor in non-selected-windows.
+If nil, don't show a cursor except in the selected window."
+ :tag "Cursor in non-selected windows"
+ :type 'boolean
+ :group 'cursor
+ :get #'(lambda (symbol) cursor-in-non-selected-windows)
+ :set #'(lambda (symbol value)
+ (set-default symbol value)
+ (setq cursor-in-non-selected-windows value)
+ (force-mode-line-update t)))
+
\f
;;;; Key bindings
(define-key ctl-x-5-map "2" 'make-frame-command)
+(define-key ctl-x-5-map "1" 'delete-other-frames)
(define-key ctl-x-5-map "0" 'delete-frame)
(define-key ctl-x-5-map "o" 'other-frame)