stk/STklos/Tk/Composite/Multiwin.stklos

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;;;;
;;;; <Multiple-window> and <Inner-Window> classes
;;;;
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;;;; Copyright <20> 1993-1998 Erick Gallesio - I3S-CNRS/ESSI <eg@unice.fr>
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;;;;
;;;; Permission to use, copy, and/or distribute this software and its
;;;; documentation for any purpose and without fee is hereby granted, provided
;;;; that both the above copyright notice and this permission notice appear in
;;;; all copies and derived works. Fees for distribution or use of this
;;;; software or derived works may only be charged with express written
;;;; permission of the copyright holder.
;;;; This software is provided ``as is'' without express or implied warranty.
;;;;
;;;;
;;;; Idea of multiples windows comes from a Tcl package called mdw_lib.tk
;;;; (a classlib for [m]ulti-[d]ocument-[w]indow applications).
;;;; The mdw-lib is a number of Tcl/Tk procedures to create and manipulate
;;;; multiple childwindows in one Tk application window
;;;; The mdw_lib author is Thomas Schwarze <swz@rtws18.ee.tu-berlin.de>
;;;; Original package is GPL'ed. However, code and way to implement
;;;; multiple windows and mdw_lib are completely different.
;;;;
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;;;; $Id: Multiwin.stklos 1.8 Sat, 26 Sep 1998 19:19:52 +0200 eg $
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;;;;
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;;;; Author: Erick Gallesio [eg@unice.fr]
;;;; Creation date: 5-Apr-1996 18:04
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;;;; Last file update: 25-Sep-1998 12:42
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(require "Basics")
(select-module STklos+Tk)
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(export place) ;; Since it it redefined as a generic ...
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(image 'create 'bitmap '*bitmap-cross* :data
"#define cross_width 10
#define cross_height 10
static unsigned char cross_bits[] = {
0,0,0,0,0xc,3,0x9c,3,0xf8,1,0xf0,0,0xf0,0,0xf8,1,0x9c,3,0x0c,3};")
(image 'create 'bitmap '*bitmap-icon* :data
"#define icon_width 10
#define icon_height 10
static unsigned char icon_bits[] = {
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0xfc,3,0xfc,3,0,0};")
(image 'create 'bitmap '*bitmap-max* :data
"#define max_width 10
#define max_height 10
static unsigned char max_bits[] = {
0,0,0,0,0xfc,3,0xfc,3,0xfc,3,0xfc,3,0xfc,3,0xfc,3,0xfc,3,0xfc,3};")
(image 'create 'bitmap '*bitmap-min* :data
"#define min_width 10
#define min_height 10
static unsigned char min_bits[] = {
0,0,0,0,0,0,0,0,0xf0,0,0xf0,0,0xf0,0,0xf0,0,0,0,0,0};")
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;
;;;; <Multiple-window> class
;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(define-class <Multiple-window> (<Frame>)
(bottom-bar bottom-bar-title
(current :initform #f)
(children :initform '())
(child-selected-col :initform '("white" . "RoyalBlue1"))
(child-unselected-col :initform '("gray80" . "gray50"))))
(define-method initialize ((self <Multiple-window>) initargs)
(next-method)
(if (zero? (width self)) (set! (width self) 640))
(if (zero? (height self)) (set! (height self) 480))
(pack 'propagate self #f)
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;; Ignore the border-width or highlight-thickness given (or implied
;; by a .Xdefaults configuration) to ease window movement in. This
;; is clearly not correct but user should not see the trick
(slot-set! self 'border-width 0)
(slot-set! self 'highlight-thickness 0)
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;; Create the bottom bar
(let* ((bb (make <Frame> :parent self :border-width 3 :relief "groove"))
(l (make <Label> :parent bb :width 20 :border-width 3 :relief "ridge"
:anchor "w")))
(pack l :side "left" :expand #f :padx 3 :pady 3)
(pack bb :side "bottom" :expand #f :fill "x")
(slot-set! self 'bottom-bar bb)
(slot-set! self 'bottom-bar-title l)))
(define-method pack ((self <Multiple-window>)) ;; Pack without parameter
(pack self :fill "both" :expand #t))
(define-method find-current-window ((self <Multiple-window>) avoid)
;; Find a plausible current window (i.e one which is different than
;; avoid and which is not iconified).
;; If no window is available return avoid.
(letrec ((plausible (lambda (l)
(cond ((null? l) avoid)
((or (equal? (car l) avoid)
(slot-ref (car l) 'iconified?))
(plausible (cdr l)))
(ELSE (car l))))))
(plausible (slot-ref self 'children))))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;
;;;; <Inner-window> class
;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(define-class <Inner-window> (<Tk-composite-widget> <Frame>)
(title-label icon-button maximize-button destroy-button icon internal-frame
(width :init-keyword :width :accessor width
:allocation :propagated :propagate-to (frame))
(height :init-keyword :height :accessor height
:allocation :propagated :propagate-to (frame))
(title :init-keyword :title :accessor title
:allocation :propagated :propagate-to ((title-label text)))
(x :initform 0)
(y :initform 0)
(maximized? :initform #f)
(iconified? :initform #f)))
(define-method initialize-composite-widget ((self <Inner-Window>) initargs parent)
(let* ((int (make <Frame> :parent parent :border-width 0 :cursor "left_ptr"))
(title (make <Frame> :parent int :relief "ridge" :border-width 1))
(label (make <Label> :parent title :text "No title" :cursor "hand2"))
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(b1 (make <Button> :parent title :image *bitmap-cross*))
(b2 (make <Button> :parent title :image *bitmap-max*))
(b3 (make <Button> :parent title :image *bitmap-icon*)))
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;; Make internal sub windows
(slot-set! self 'Id (Id int))
(slot-set! self 'title-label label)
(slot-set! self 'destroy-button b1)
(slot-set! self 'icon-button b3)
(slot-set! self 'maximize-button b2)
(slot-set! self 'internal-frame int)
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;; Initialize slots
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(if (zero? (width parent)) (set! (width parent) 500))
(if (zero? (height parent)) (set! (height parent) 300))
(slot-set! parent 'border-width 3)
(slot-set! parent 'relief "flat")
(slot-set! parent 'background "gray80")
;; Pack everything
(pack label :side "left" :expand #t :fill "x")
(pack b1 b2 b3 :side "right")
(pack 'propagate self #f)
(pack title :side "top" :fill "x" :expand #f)
(pack int :fill "both" :expand #t)
;; Associate buttons callbacks
(set! (command b2)
(lambda ()
((if (slot-ref self 'maximized?) minimize-window maximize-window)
self)))
(set! (command b3) (lambda () (iconify-window self)))
;; Associate bindings
(make-inner-window-bindings self label b1)
;; Add the new window to the multiple-window children list
(let ((mult (slot-ref parent 'parent)))
(slot-set! mult 'children (cons self (slot-ref mult 'children))))))
;;;;
;;;; make-inner-window-bindings
;;;;
;;;; The hard part: associate bindings to the window corners and to
;;;; the title bar. This is very long and very ugly; but can it be done
;;;; in another way?
;;;;
(define (make-inner-window-bindings w title button)
(let ((bd 15) ;; # of pixels for detecting a border
(pos-x 0)
(pos-y 0)
(index 0)
(resizing #f)
(cursors '#("top_left_corner" "top_side" "top_right_corner"
"left_side" "crosshair" "right_side"
"bottom_left_corner" "bottom_side" "bottom_right_corner")))
(define (in-inner-window window x y)
(let* ((w (winfo 'width window))
(h (winfo 'height window))
(choose (lambda (start)
;; Retain in index the cursor index
(set! index (cond ((< x bd) start)
((< x (- w bd)) (+ start 1))
(ELSE (+ start 2))))
;; Return the name of the cursor to use
(vector-ref cursors index))))
(slot-set! (slot-ref window 'frame) 'cursor
(cond
((< y bd) (choose 0)) ;; 0, 1 or 2
((< y (- h bd)) (choose 3)) ;; 3, 4 or 5
(ELSE (choose 6)))))) ;; 6, 7 or 8
(define (resize-inner-window window x y)
(unless (or resizing (slot-ref window 'maximized?))
(set! resizing #t)
(let* ((width (winfo 'width window))
(height (winfo 'height window))
(parent (parent window))
(off-x (winfo 'rootx parent))
(off-y (winfo 'rooty parent))
(x1 (- (winfo 'rootx window) off-x))
(y1 (- (winfo 'rooty window) off-y))
(x2 (+ x1 width))
(y2 (+ y1 height)))
(case index
((0) (set! x1 (- x off-x)) (set! y1 (- y off-y)))
((1) (set! y1 (- y off-y)))
((2) (set! x2 (- x off-x)) (set! y1 (- y off-y)))
((3) (set! x1 (- x off-x)) )
((4)) ;;should not occurr
((5) (set! x2 (- x off-x)) )
((6) (set! x1 (- x off-x)) (set! y2 (- y off-y)))
((7) (set! y2 (- y off-y)))
((8) (set! x2 (- x off-x)) (set! y2 (- y off-y))))
(place window :in parent :x x1 :y y1 :width (- x2 x1) :height (- y2 y1)))
(set! resizing #f)))
;;;;
;;;; MAKE-INNER-WINDOW-BINDINGS starts here
;;;;
;; The frame
(let ((f (slot-ref w 'frame)))
(bind f "<1>" (lambda () (raise w)))
(bind f "<Enter>" (lambda (x y) (in-inner-window w x y)))
(bind f "<Motion>" (lambda (x y) (in-inner-window w x y)))
(bind f "<B1-Motion>" (lambda (|X| |Y|) (resize-inner-window w |X| |Y|))))
;; Title label
(bind title "<1>"
(lambda (|X| |Y|) (raise w) (set! pos-x |X|) (set! pos-y |Y|)))
(bind title "<B1-Motion>"
(lambda (|X| |Y|)
(unless (slot-ref w 'maximized?)
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(update 'idle)
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(place w :x (+ (winfo 'x w) (- |X| pos-x))
:y (+ (winfo 'y w) (- |Y| pos-y)))
(set! pos-x |X|)
(set! pos-y |Y|)
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; (update 'idle)
)))
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(bind title "<2>" (lambda ()
(if (equal? w (slot-ref (parent w) 'current))
(lower w))))
;; The Destroy button
(bind button "<Double-1>"
(lambda ()
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;; Delay instruction to prevent problem with button releasing
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(after 'idle (lambda () (destroy w)))))))
(define-method unselect-window ((self <Inner-Window>))
(let* ((parent (parent self))
(t (slot-ref self 'title-label))
(color (slot-ref (slot-ref self 'parent) 'child-unselected-col)))
(slot-set! parent 'current #f)
(raise (find-current-window parent self))
;; Change title color
(set! (foreground t) (car color))
(set! (background t) (cdr color))))
(define-method select-window ((self <Inner-Window>))
(let* ((parent (parent self))
(current (slot-ref parent 'current)))
(unless (equal? self current)
(let ((t (slot-ref self 'title-label))
(color (slot-ref (slot-ref self 'parent) 'child-selected-col))
(title (slot-ref parent 'bottom-bar-title)))
;; Change old title color
(when current
(let ((t (slot-ref current 'title-label))
(color (slot-ref parent 'child-unselected-col)))
(set! (foreground t) (car color))
(set! (background t) (cdr color))))
;; Change new title color
(set! (foreground t) (car color))
(set! (background t) (cdr color))
;; Change the title bar text
(set! (text-of title) (slot-ref self 'title))
;; New current window is self
(slot-set! parent 'current self)))))
(define-method raise ((self <Inner-Window>))
(let* ((parent (parent self))
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(current (slot-ref parent 'current)))
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(unless (equal? self current)
(select-window self)
;; Raise this window (but just under the bottom bar)
(if current
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(raise self current)
(begin
(next-method) ; The Tk raise
(raise (slot-ref parent 'bottom-bar))))))) ; let bottom bar on top
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(define-method lower ((self <Inner-Window>))
(unselect-window self)
(next-method))
(define-method destroy ((self <Inner-window>))
(let ((parent (slot-ref self 'parent)))
;; Delete self from list of children
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(slot-set! parent 'children (remove self (slot-ref parent 'children)))
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(unselect-window self)
(when (equal? self (slot-ref parent 'current))
(set! (text-of (slot-ref parent 'bottom-bar-title)) "")
(slot-set! parent 'current #f)))
(next-method))
(define-method maximize-window ((self <Inner-Window>))
(unless (slot-ref self 'maximized?)
(raise self)
(slot-set! self 'maximized? #t)
(slot-set! self 'x (winfo 'x self))
(slot-set! self 'y (winfo 'y self))
(slot-set! self 'width (winfo 'width self))
(slot-set! self 'height (winfo 'height self))
; Use pack to fill the cavity
(pack self :fill "both" :expand #t)
;; Change maximize button
(let ((but (slot-ref self 'maximize-button)))
(set! (image-of but) *bitmap-min*))))
(define-method minimize-window ((self <Inner-Window>))
(when (slot-ref self 'maximized?)
(slot-set! self 'maximized? #f)
;; Forget previous pack
(pack 'forget self)
(place self :x (slot-ref self 'x)
:y (slot-ref self 'y)
:width (slot-ref self 'width)
:height (slot-ref self 'height))
;; Change maximize button
(let ((but (slot-ref self 'maximize-button)))
(set! (image-of but) *bitmap-max*))))
(define-method iconify-window ((self <Inner-Window>))
(unless (slot-ref self 'iconified?)
(let ((parent (slot-ref self 'parent)))
(slot-set! self 'iconified? #t)
(minimize-window self)
(unselect-window self)
; Retain window position before deleting it
(slot-set! self 'x (winfo 'x self))
(slot-set! self 'y (winfo 'y self))
(slot-set! self 'width (winfo 'width self))
(slot-set! self 'height (winfo 'height self))
(place 'forget self)
;; Create Icon button
(let* ((bar (slot-ref parent 'bottom-bar))
(title (slot-ref self 'title))
(b (make <Button> :parent bar :text title
:font "-adobe-helvetica-*-r-*-*-*-100-*-*-*-*-*-*"
:width (min (string-length title) 15) :anchor "w"
:command (lambda () (show-window self)))))
(slot-set! self 'icon b)
(pack b :side "left" :expand #f :fill "none"))
;; If this window is alone; purge the bottom bar title
(when (equal? self (slot-ref parent 'current))
(set! (text-of (slot-ref parent 'bottom-bar-title)) "")
(slot-set! parent 'current #f)))))
(define-method show-window ((self <Inner-Window>))
(when (slot-ref self 'iconified?)
(slot-set! self 'iconified? #f)
(place self :x (slot-ref self 'x)
:y (slot-ref self 'y)
:width (slot-ref self 'width)
:height (slot-ref self 'height))
;; Destroy icon
(destroy (slot-ref self 'icon))
; And raise the window
(raise self)))
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(define-method place ((self <Inner-Window>) . l)
(next-method)
(raise self))
#|
Example:
(define mw (make <Multiple-Window> :background "gray50"))
(define i1 (make <Inner-Window> :parent mw :title "Win#1"))
(define t1 (make <Text> :parent i1))
(define i2 (make <Inner-Window> :parent mw :title "Win#2"))
(define t2 (make <Text> :parent i2))
(place i1 :x 10 :y 20)
(place i2 :x 50 :y 70)
(pack mw t1 t2 :expand #t :fill "both")
|#