stk/STklos/Tk/Composite/Paned.stklos

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;;;;
;;;; P a n e d . s t k -- HPaned and VPaned composite widgets
;;;;
;;;; Copyright © 1993-1998 Erick Gallesio - I3S-CNRS/ESSI <eg@unice.fr>
;;;;
;;;; 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 this implementation was found in comp.lang.tcl.
;;;; Original author seems to be James Noble and the version from which this
;;;; stuff is derivated is from Jay Schmidgall (shmdgljd@ghostwind.rchland.ibm.com).
;;;;
;;;; $Id: Paned.stklos 1.2 Sun, 01 Feb 1998 22:14:16 +0000 eg $
;;;;
;;;; Author: Erick Gallesio [eg@kaolin.unice.fr]
;;;; Creation date: 22-Mar-1994 13:05
;;;; Last file update: 31-Jan-1998 16:04
(require "Basics")
(select-module STklos+Tk)
;;;
;;; Globals
;;;
(define paned:drag-start 0)
;=============================================================================
;
; < H P a n e d >
;
;=============================================================================
;;;
;;; Resources
;;;
(option 'add "*HPaned.Grip.Background" "Black" "widgetDefault")
(option 'add "*HPaned.Grip.Relief" "raised" "widgetDefault")
(option 'add "*HPaned.Grip.BorderWidth" 2 "widgetDefault")
(option 'add "*HPaned.Grip.Cursor" "sb_v_double_arrow" "widgetDefault")
(option 'add "*HPaned.Grip.Width" 12 "widgetDefault")
(option 'add "*HPaned.Grip.Height" 8 "widgetDefault")
(option 'add "*HPaned.Separator.BorderWidth" 2 "widgetDefault")
(option 'add "*HPaned.Separator.Relief" "solid" "widgetDefault")
;;;
;;; Class definition
;;;
(define-class <HPaned> (<Tk-composite-widget>)
((class :init-keyword :class
:init-form "HPaned")
(top-frame :accessor top-frame-of)
(bottom-frame :accessor bottom-frame-of)
(grip :accessor grip-of)
(separator :accessor separator-of)
(fraction :init-keyword :fraction)
;; Fictives slot
(background :accessor background
:init-keyword :background
:allocation :propagated
:propagate-to (frame top-frame bottom-frame grip separator))
(grip-background :accessor grip-background
:init-keyword :grip-background
:allocation :propagated
:propagate-to ((grip background)))
(border-width :accessor border-width
:allocation :propagated
:propagate-to (frame))
(internal-relief :accessor internal-relief
:init-keyword :internal-relief
:allocation :propagated
:propagate-to ((separator relief)))
(relief :accessor relief
:init-keyword :relief
:allocation :propagated
:propagate-to (frame))
(width :accessor width
:init-keyword :width
:allocation :propagated
:propagate-to (frame))
(height :accessor height
:init-keyword :height
:allocation :propagated
:propagate-to (frame))))
(define-method initialize-composite-widget ((self <HPaned>) initargs frame)
(let ((grip (make <Frame> :parent frame :class "Grip"))
(separ (make <Frame> :parent frame :class "Separator" :width 1 :height 4))
(top (make <Frame> :parent frame :border-width 2 :relief "raised"))
(bot (make <Frame> :parent frame :border-width 2 :relief "raised")))
(next-method)
;; Associate bindings to the grip
(bind grip "<Button-1>" (lambda (y) (start-grip self y)))
(bind grip "<B1-Motion>" (lambda (y) (motion-grip self y)))
(bind grip "<B1-ButtonRelease-1>" (lambda (y) (stop-grip self y)))
;; initialize true slots
(slot-set! self 'Id (Id frame))
(slot-set! self 'top-frame top)
(slot-set! self 'bottom-frame bot)
(slot-set! self 'grip grip)
(slot-set! self 'separator separ)
(slot-set! self 'fraction (get-keyword :fraction initargs 0.5))
;; Place the grip
(place-grip self)))
;;;
;;; <HPaned> methods
;;;
(define-method place-grip ((self <HPaned>))
(let ((fraction (slot-ref self 'fraction)))
(place (separator-of self) :relx 0 :rely fraction :anch "w" :relwi 1)
(place (grip-of self) :relx 0.95 :rely fraction :anchor "center")
(place (top-frame-of self) :x 0 :y 0 :relwidth 1 :relheight fraction)
(place (bottom-frame-of self) :x 0 :rely fraction :relwidth 1
:relheight (- 1.0 fraction))
;; Hide separator behind the bottom and top frames
(lower (separator-of self))
;; Be sure to raise the grip
(raise (grip-of self))))
(define-method start-grip ((self <HPaned>) y)
;; Raise separator and grip
(raise (separator-of self))
(raise (grip-of self))
(set! paned:drag-start y))
(define-method motion-grip ((self <HPaned>) y)
(let ((fraction (slot-ref self 'fraction)))
(set! fraction (max 0.0001
(min 0.9999
(+ fraction
(/ (- y paned:drag-start)
(+ 1 (winfo 'height (frame-of self))))))))
(place (separator-of self) :relx 0 :relwidth 1 :rely fraction :anchor "w")
(place (grip-of self) :relx 0.95 :rely fraction :anchor "center")
(slot-set! self 'fraction fraction)))
(define-method stop-grip ((self <HPaned>) y)
(place-grip self))
;=============================================================================
;
; < V P a n e d >
;
;=============================================================================
;;;
;;; Resources
;;;
(option 'add "*VPaned.Grip.Background" "Black" "widgetDefault")
(option 'add "*VPaned.Grip.Relief" "raised" "widgetDefault")
(option 'add "*VPaned.Grip.BorderWidth" 2 "widgetDefault")
(option 'add "*VPaned.Grip.Cursor" "sb_h_double_arrow" "widgetDefault")
(option 'add "*VPaned.Grip.Width" 8 "widgetDefault")
(option 'add "*VPaned.Grip.Height" 12 "widgetDefault")
(option 'add "*VPaned.Separator.BorderWidth" 2 "widgetDefault")
(option 'add "*VPaned.Separator.Relief" "solid" "widgetDefault")
;;;
;;; Class definition
;;;
(define-class <VPaned> (<Tk-composite-widget>)
((class :init-keyword :class
:init-form "VPaned")
(left-frame :accessor left-frame-of)
(right-frame :accessor right-frame-of)
(grip :accessor grip-of)
(separator :accessor separator-of)
(fraction :init-keyword :fraction)
;; Fictives slots
(background :accessor background
:init-keyword :background
:allocation :propagated
:propagate-to (frame left-frame right-frame grip separator))
(grip-background :accessor grip-background
:init-keyword :grip-background
:allocation :propagated
:propagate-to ((grip background)))
(border-width :accessor border-width
:allocation :propagated
:propagate-to (frame))
(internal-relief :accessor internal-relief
:init-keyword :internal-relief
:allocation :propagated
:propagate-to ((separator relief)))
(relief :accessor relief
:init-keyword :relief
:allocation :propagated
:propagate-to (frame))
(width :accessor width
:init-keyword :width
:allocation :propagated
:propagate-to (frame))
(height :accessor height
:init-keyword :height
:allocation :propagated
:propagate-to (frame))))
(define-method initialize-composite-widget ((self <VPaned>) initargs frame)
(let ((grip (make <Frame> :parent frame :class "Grip"))
(separ (make <Frame> :parent frame :class "Separator":width 4 :height 1))
(left (make <Frame> :parent frame :border-width 2 :relief "raised"))
(right (make <Frame> :parent frame :border-width 2 :relief "raised")))
(next-method)
;; Associate bindings to the grip
(bind grip "<Button-1>" (lambda (x) (start-grip self x)))
(bind grip "<B1-Motion>" (lambda (x) (motion-grip self x)))
(bind grip "<B1-ButtonRelease-1>" (lambda (x) (stop-grip self x)))
;; initialize true slots
(slot-set! self 'Id (Id frame))
(slot-set! self 'left-frame left)
(slot-set! self 'right-frame right)
(slot-set! self 'grip grip)
(slot-set! self 'separator separ)
(slot-set! self 'fraction (get-keyword :fraction initargs 0.5))
;; Place the grip
(place-grip self)))
;;;
;;; <VPaned> methods
;;;
(define-method place-grip ((self <VPaned>))
(let ((fraction (slot-ref self 'fraction)))
(place (separator-of self) :rely 0 :relx fraction :anch "n" :relh 1)
(place (grip-of self) :rely 0.95 :relx fraction :anchor "center")
(place (left-frame-of self) :x 0 :y 0 :relheight 1 :relwidth fraction)
(place (right-frame-of self) :y 0 :relx fraction :relheight 1
:relwidth (- 1.0 fraction))
;; Hide separator behind the right and left frames
(lower (separator-of self))
;; Be sure to raise the grip
(raise (grip-of self))))
(define-method start-grip ((self <VPaned>) x)
;; Raise separator and grip
(raise (separator-of self))
(raise (grip-of self))
(set! paned:drag-start x))
(define-method motion-grip ((self <VPaned>) x)
(let ((fraction (slot-ref self 'fraction)))
(set! fraction (max 0.0001
(min 0.9999
(+ fraction
(/ (- x paned:drag-start)
(+ 1 (winfo 'width (frame-of self))))))))
(place (separator-of self) :rely 0 :relheight 1 :relx fraction :anchor "n")
(place (grip-of self) :rely 0.95 :relx fraction :anchor "center")
(slot-set! self 'fraction fraction)))
(define-method stop-grip ((self <VPaned>) x)
(place-grip self))
(provide "Paned")
#|
Example:
(define x (make <HPaned> :width 200 :height 300))
(define y (make <VPaned> :parent (top-frame-of x) :fraction 0.75))
(pack x y :fill "both" :expand #t)
|#