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;;; -*- Mode:Lisp; Package:CLIO-OPEN; Base:10; Lowercase:T; Syntax:Common-Lisp -*-
;;;----------------------------------------------------------------------------------+
;;; |
;;; TEXAS INSTRUMENTS INCORPORATED |
;;; P.O. BOX 149149 |
;;; AUSTIN, TEXAS 78714-9149 |
;;; |
;;; Copyright (C) 1989, 1990 Texas Instruments Incorporated. |
;;; |
;;; Permission is granted to any individual or institution to use, copy, modify, and |
;;; distribute this software, provided that this complete copyright and permission |
;;; notice is maintained, intact, in all copies and supporting documentation. |
;;; |
;;; Texas Instruments Incorporated provides this software "as is" without express or |
;;; implied warranty. |
;;; |
;;;----------------------------------------------------------------------------------+
(in-package "CLIO-OPEN")
(export '(
gravity
*default-display-bottom-margin*
*default-display-left-margin*
*default-display-right-margin*
*default-display-top-margin*
display-bottom-margin
display-gravity
display-left-margin
display-right-margin
display-top-margin
)
'clio-open)
(deftype gravity ()
'(member :north-west :north :north-east
:east :center :west
:south-east :south :south-west))
(defparameter *default-display-bottom-margin* 0
"The default size of the bottom margin, in points.")
(defparameter *default-display-left-margin* 0
"The default size of the left margin, in points.")
(defparameter *default-display-right-margin* 0
"The default size of the right margin, in points.")
(defparameter *default-display-top-margin* 0
"The default size of the top margin, in points.")
;; Special types to support conversion of resource defaults to pixel units
(deftype default-bottom-margin () 'card16)
(deftype default-left-margin () 'card16)
(deftype default-right-margin () 'card16)
(deftype default-top-margin () 'card16)
(defmethod convert ((contact contact) (value (eql :default)) (type (eql 'default-bottom-margin)))
(point-pixels (contact-screen contact) *default-display-bottom-margin*))
(defmethod convert ((contact contact) (value (eql :default)) (type (eql 'default-left-margin)))
(point-pixels (contact-screen contact) *default-display-left-margin*))
(defmethod convert ((contact contact) (value (eql :default)) (type (eql 'default-right-margin)))
(point-pixels (contact-screen contact) *default-display-right-margin*))
(defmethod convert ((contact contact) (value (eql :default)) (type (eql 'default-top-margin)))
(point-pixels (contact-screen contact) *default-display-top-margin*))
;;;----------------------------------------------------------------------------+
;;; |
;;; gravity-mixin |
;;; |
;;;----------------------------------------------------------------------------+
(defcontact gravity-mixin ()
((bottom-margin :type default-bottom-margin
:initarg :bottom-margin
:reader display-bottom-margin) ; setf defined below
(right-margin :type default-right-margin
:initarg :right-margin
:reader display-right-margin) ; setf defined below
(gravity :type (or (member :tiled) gravity) ; setf defined below
:initform :center
:initarg :display-gravity
:reader display-gravity)
(clip-rectangle :type array
:initform (make-array 4 :element-type 'integer)))
(:resources
(display-gravity :type (or (member :tiled) gravity)
:initform :center)
(bottom-margin :initform :default)
(right-margin :initform :default)
(left-margin :type default-left-margin
:initform :default)
(top-margin :type default-top-margin
:initform :default))
(:documentation "Provides margin and gravity resources for core contacts."))
(defmacro display-clip-x (contact)
`(svref (slot-value ,contact 'clip-rectangle) 0))
(defmacro display-clip-y (contact)
`(svref (slot-value ,contact 'clip-rectangle) 1))
(defmacro display-clip-width (contact)
`(svref (slot-value ,contact 'clip-rectangle) 2))
(defmacro display-clip-height (contact)
`(svref (slot-value ,contact 'clip-rectangle) 3))
(flet
((update-clip-rectangle
(contact)
(with-slots (clip-rectangle right-margin bottom-margin width height) (the gravity-mixin contact)
(setf
(display-clip-width contact) (max 0 (- width right-margin (display-clip-x contact)))
(display-clip-height contact) (max 0 (- height bottom-margin (display-clip-y contact))))))
(update-bit-gravity
(contact)
(with-slots (gravity) (the gravity-mixin contact)
(setf
(window-bit-gravity contact)
(cond
;; If display-gravity is at a corner or margins are equal, then
;; bit-gravity can equal display-gravity; this minimizes exposure on resize.
;; Otherwise, must use bit-gravity :forget and redisplay.
((case gravity
((:north :south)
(/= (display-left-margin contact) (display-right-margin contact)))
((:west :east)
(/= (display-top-margin contact) (display-bottom-margin contact)))
(:center
(or (/= (display-left-margin contact) (display-right-margin contact))
(/= (display-top-margin contact) (display-bottom-margin contact)))))
:forget)
;; :tiled display-gravity is a special case...
((eq gravity :tiled)
:north-west)
(t
gravity))))))
(defmethod initialize-instance :after ((contact gravity-mixin)
&key top-margin left-margin (display-gravity :center)
&allow-other-keys)
(assert (or (typep display-gravity 'gravity) (eq display-gravity :tiled))
() "~s is not :tiled or a gravity"
display-gravity)
(setf (display-clip-x contact) left-margin
(display-clip-y contact) top-margin)
(update-clip-rectangle contact))
(defmethod (setf display-bottom-margin) (new-value (contact gravity-mixin))
(with-slots (bottom-margin) contact
(let ((new-value (if (eq new-value :default)
(convert contact new-value 'default-bottom-margin)
new-value)))
(check-type new-value card16)
(setf bottom-margin new-value)
(update-clip-rectangle contact)
(when (realized-p contact)
(update-bit-gravity contact)
(clear-area contact :exposures-p t))
new-value)))
(defmethod (setf display-right-margin) (new-value (contact gravity-mixin))
(with-slots (right-margin) contact
(let ((new-value (if (eq new-value :default)
(convert contact new-value 'default-right-margin)
new-value)))
(check-type new-value card16)
(setf right-margin new-value)
(update-clip-rectangle contact)
(when (realized-p contact)
(update-bit-gravity contact)
(clear-area contact :exposures-p t))
new-value)))
(defmethod (setf display-left-margin) (new-value (contact gravity-mixin))
(with-slots (clip-rectangle) contact
(let ((new-value (if (eq new-value :default)
(convert contact new-value 'default-left-margin)
new-value)))
(check-type new-value card16)
(setf (display-clip-x contact) new-value)
(update-clip-rectangle contact)
(when (realized-p contact)
(update-bit-gravity contact)
(clear-area contact :exposures-p t))
new-value)))
(defmethod display-left-margin ((contact gravity-mixin))
(display-clip-x contact))
(defmethod (setf display-top-margin) (new-value (contact gravity-mixin))
(with-slots (clip-rectangle) contact
(let ((new-value (if (eq new-value :default)
(convert contact new-value 'default-top-margin)
new-value)))
(check-type new-value card16)
(setf (display-clip-y contact) new-value)
(update-clip-rectangle contact)
(when (realized-p contact)
(update-bit-gravity contact)
(clear-area contact :exposures-p t))
new-value)))
(defmethod display-top-margin ((contact gravity-mixin))
(display-clip-y contact))
(defmethod resize :after ((contact gravity-mixin) width height border-width)
(declare (ignore width height border-width))
(update-clip-rectangle contact))
(defmethod (setf display-gravity) :after (new-value (contact gravity-mixin))
(declare (ignore new-value))
(when (realized-p contact)
(update-bit-gravity contact)
(clear-area contact :exposures-p t)))
(defmethod realize :after ((contact gravity-mixin))
(update-bit-gravity contact)))
(defmethod (setf display-gravity) (new-value (contact gravity-mixin))
(check-type new-value gravity)
(setf (slot-value contact 'gravity) new-value))
(defmethod preferred-size :around ((contact gravity-mixin) &key width height border-width)
(let
((tm (display-top-margin contact))
(bm (display-bottom-margin contact))
(lm (display-left-margin contact))
(rm (display-right-margin contact)))
;; Get preferred-size with margins subtracted from suggested size, then add
;; margins back in to get preferred size including margins.
(multiple-value-bind (pw ph pbw)
(call-next-method
contact
:width (max 0 (- (or width (contact-width contact)) lm rm))
:height (max 0 (- (or height (contact-height contact)) tm bm))
:border-width (or border-width (contact-border-width contact)))
(values
(+ pw lm rm)
(+ ph tm bm)
pbw))))
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