| author | Stefan Vogel <sv@exept.de> |
| Wed, 31 Mar 2010 15:52:56 +0200 | |
| changeset 5561 | 5d0f94937438 |
| parent 3577 | c0282d4e18d6 |
| child 6220 | 67d0b77833c6 |
| permissions | -rw-r--r-- |
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" |
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COPYRIGHT (c) 1997 by eXept Software AG / Claus Gittinger |
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0bb571e07c0e
moved screen instance variable
Claus Gittinger <cg@exept.de>
parents:
3198
diff
changeset
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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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"{ Package: 'stx:libview' }"
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Object subclass:#GraphicsDevice |
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instanceVariableNames:'displayId screen eventListeners deviceType' |
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classVariableNames:'' |
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poolDictionaries:'' |
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category:'Interface-Graphics' |
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! |
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!GraphicsDevice class methodsFor:'documentation'! |
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copyright |
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" |
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COPYRIGHT (c) 1997 by eXept Software AG / Claus Gittinger |
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3222
0bb571e07c0e
moved screen instance variable
Claus Gittinger <cg@exept.de>
parents:
3198
diff
changeset
|
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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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this abstract class was inserted to provide a home for ST-80 classes |
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(previously, DeviceWorkstation was directly under Object). |
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In ST/X, this is mostly dummy. |
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[instance variables:] |
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displayId <Handle> the device handle |
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screen any another some device specific id |
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eventListeners <Collection> | nil bunch of objects interested in events. |
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deviceType <Symbol> some arbitrary symbol, used to choose windowSpecs. |
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[see also:] |
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3222
0bb571e07c0e
moved screen instance variable
Claus Gittinger <cg@exept.de>
parents:
3198
diff
changeset
|
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DeviceWorkstation XWorkstation |
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[author:] |
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3222
0bb571e07c0e
moved screen instance variable
Claus Gittinger <cg@exept.de>
parents:
3198
diff
changeset
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Claus Gittinger |
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" |
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! ! |
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!GraphicsDevice methodsFor:'accessing & queries'! |
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addEventListener:aListener |
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"add a local eventListener (with new protocol - #processEvent:) |
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This one gets a chance to intercept all events for this device" |
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eventListeners isNil ifTrue:[ |
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eventListeners := OrderedCollection new:2 |
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]. |
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(eventListeners includesIdentical:aListener) ifFalse:[ |
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eventListeners add:aListener |
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]. |
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bePDA |
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self deviceType:#pda |
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deviceType |
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^ deviceType |
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! |
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deviceType:aSymbol |
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deviceType := aSymbol |
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isPDA |
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^ self deviceType == #pda |
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! |
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isWebServiceDevice |
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"I am not a WebService pseude-device" |
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^ false |
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! |
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removeEventListener:aListener |
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"remove a local eventListener (with new protocol - #processEvent:)" |
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eventListeners notNil ifTrue:[ |
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eventListeners removeIdentical:aListener ifAbsent:nil |
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]. |
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! ! |
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!GraphicsDevice methodsFor:'event processing'! |
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notifyEventListenersAbout:anEvent |
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"notify all eventHandlers about an incoming event. |
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If any returns true, it is assumed to be eaten by the handler and not |
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enqueued (i.e. not passed to the windowGroup process)" |
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|anyListenerReturnedTrue| |
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anyListenerReturnedTrue := false. |
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"/ local listeners ... |
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eventListeners notNil ifTrue:[ |
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3222
0bb571e07c0e
moved screen instance variable
Claus Gittinger <cg@exept.de>
parents:
3198
diff
changeset
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eventListeners do:[:aListener | |
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0bb571e07c0e
moved screen instance variable
Claus Gittinger <cg@exept.de>
parents:
3198
diff
changeset
|
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anyListenerReturnedTrue := anyListenerReturnedTrue | |
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0bb571e07c0e
moved screen instance variable
Claus Gittinger <cg@exept.de>
parents:
3198
diff
changeset
|
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(aListener processEvent:anEvent) |
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0bb571e07c0e
moved screen instance variable
Claus Gittinger <cg@exept.de>
parents:
3198
diff
changeset
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] |
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]. |
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^ anyListenerReturnedTrue. |
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! ! |
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!GraphicsDevice methodsFor:'misc'! |
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roundTripTime |
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"answer the round trip time in milliseconds. |
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May be used to detect slow device connections. |
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Subclasses redefine this. Assume a fast Diplay connection |
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and answer 0 here" |
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^ 0 |
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" |
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Screen current roundTripTime |
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" |
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! ! |
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!GraphicsDevice class methodsFor:'documentation'! |
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version |
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^ '$Header: /cvs/stx/stx/libview/GraphicsDevice.st,v 1.10 2010-03-31 13:52:56 stefan Exp $' |
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! |
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version_CVS |
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^ '$Header: /cvs/stx/stx/libview/GraphicsDevice.st,v 1.10 2010-03-31 13:52:56 stefan Exp $' |
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! ! |