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"
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COPYRIGHT (c) 1996 by Claus Gittinger
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All Rights Reserved
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This software is furnished under a license and may be used
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only in accordance with the terms of that license and with the
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inclusion of the above copyright notice. This software may not
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be provided or otherwise made available to, or used by, any
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other person. No title to or ownership of the software is
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hereby transferred.
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"
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Object subclass:#VisualComponent
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instanceVariableNames:'bounds fgColor bgColor'
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classVariableNames:''
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poolDictionaries:''
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category:'Graphics-Display Objects'
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!
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!VisualComponent class methodsFor:'documentation'!
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copyright
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"
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COPYRIGHT (c) 1996 by Claus Gittinger
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All Rights Reserved
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This software is furnished under a license and may be used
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only in accordance with the terms of that license and with the
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inclusion of the above copyright notice. This software may not
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be provided or otherwise made available to, or used by, any
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other person. No title to or ownership of the software is
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hereby transferred.
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"
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!
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documentation
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"
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abstract superclass for all kinds of visual components.
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265
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This class and its subclasses (currently) exist mostly for
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ST-80 compatibility - to provide a home for ported PD classes,
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which depend on the VisualComponent hierarchy.
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Notice:
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this class was implemented using protocol information
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from alpha testers and from the Hopkins/Horan book.
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- it may not be complete or compatible to the corresponding ST-80 class.
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If you encounter any incompatibilities, please forward a note
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describing the incompatibility verbal (i.e. no code) to the ST/X team.
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This is still being constructed - not yet finished.
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245
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[author:]
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Claus Gittinger
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265
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[see also:]
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GeometricWrapper
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"
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! !
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!VisualComponent class methodsFor:'instance creation'!
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new
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^ self basicNew initialize
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! !
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!VisualComponent methodsFor:'accessing'!
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bounds
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"return my bounds"
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^ bounds
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"Created: 8.5.1996 / 23:35:19 / cg"
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"Modified: 9.5.1996 / 00:12:00 / cg"
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!
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bounds:aRectangle
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"set my bounds"
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bounds := aRectangle
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"Created: 8.5.1996 / 23:36:07 / cg"
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"Modified: 9.5.1996 / 00:13:12 / cg"
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!
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container:someContainer
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"ignored here"
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"Created: 9.5.1996 / 00:48:54 / cg"
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!
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preferredBounds
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"return my preferredBounds"
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^ 100@100
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"Created: 8.5.1996 / 23:36:29 / cg"
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246
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"Modified: 9.5.1996 / 00:13:22 / cg"
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!
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setParentViewIn:aView
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"ignored here - for now"
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"Created: 9.5.1996 / 00:19:39 / cg"
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! !
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!VisualComponent methodsFor:'accessing - look'!
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backgroundColor:aColor
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"set my backgroundColor"
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bgColor := aColor
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"Created: 8.5.1996 / 23:47:11 / cg"
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"Modified: 9.5.1996 / 00:13:33 / cg"
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!
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foregroundColor:aColor
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"set my foregroundColor"
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fgColor := aColor
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"Created: 8.5.1996 / 23:47:05 / cg"
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"Modified: 9.5.1996 / 00:13:39 / cg"
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! !
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!VisualComponent methodsFor:'displaying'!
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displayOn:aGC x:x y:y
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|oldTranslation|
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oldTranslation := aGC translation.
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aGC translation:(x @ y).
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self displayOn:aGC.
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aGC translation:oldTranslation
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"Created: 13.5.1996 / 10:18:43 / cg"
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! !
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!VisualComponent methodsFor:'event handling'!
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buttonPress:button x:x y:y
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"button was pressed over me - ignored here"
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"Modified: 9.5.1996 / 00:14:08 / cg"
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!
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buttonRelease:button x:x y:y
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"button was released over me - ignored here"
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"Created: 8.5.1996 / 23:38:30 / cg"
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"Modified: 9.5.1996 / 00:14:04 / cg"
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!
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keyPress:key x:x y:y
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"key was pressed over me - ignored here"
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"Created: 8.5.1996 / 23:46:03 / cg"
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"Modified: 9.5.1996 / 00:14:14 / cg"
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!
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keyRelease:key x:x y:y
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"key was released over me - ignored here"
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"Created: 8.5.1996 / 23:46:07 / cg"
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"Modified: 9.5.1996 / 00:14:19 / cg"
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! !
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!VisualComponent methodsFor:'initialization'!
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initialize
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fgColor := Color black.
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bgColor := Color white.
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"Created: 8.5.1996 / 23:49:54 / cg"
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! !
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!VisualComponent methodsFor:'queries'!
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heightOn:aGC
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"return my height, if displayed on aGC;
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I assume that my height is independent of the device, and return
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the bounds height"
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^ self bounds height
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"Modified: 13.5.1996 / 10:15:13 / cg"
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!
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widthOn:aGC
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"return my width, if displayed on aGC;
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I assume that my width is independent of the device, and return
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the bounds width"
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^ self bounds width
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"Created: 13.5.1996 / 10:14:44 / cg"
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"Modified: 13.5.1996 / 10:15:17 / cg"
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! !
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!VisualComponent methodsFor:'testing'!
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containsPoint:aPoint
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"return true, if the receiver contains aPoint"
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^ self bounds containsPoint:aPoint
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"Created: 9.5.1996 / 00:21:44 / cg"
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"Modified: 9.5.1996 / 00:22:00 / cg"
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!
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hasBorder
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"return true, if the receiver shows a border"
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^ false
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"Modified: 9.5.1996 / 00:21:29 / cg"
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!
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intersects:aRectangle
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"return true, if the receivers bounds intersects aRectangle"
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^ self bounds intersects:aRectangle
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"Created: 9.5.1996 / 00:21:18 / cg"
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"Modified: 9.5.1996 / 00:22:04 / cg"
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! !
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!VisualComponent class methodsFor:'documentation'!
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version
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^ '$Header: /cvs/stx/stx/libview2/VisualComponent.st,v 1.5 1996-05-13 08:50:38 cg Exp $'
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! !
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