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0
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"
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6
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COPYRIGHT (c) 1992 by Claus Gittinger
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80
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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:#Cursor
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instanceVariableNames:'shape sourceForm maskForm hotX hotY
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80
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device cursorId'
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23
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classVariableNames: 'Lobby
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80
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DefaultFgColor DefaultBgColor
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0
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NormalCursor HandCursor ArrowCursor
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WaitCursor CrossHairCursor OriginCursor
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CornerCursor SquareCursor FourWayCursor
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UpDownArrowCursor LeftRightArrowCursor'
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poolDictionaries:''
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category:'Graphics-Support'
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!
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Cursor comment:'
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6
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COPYRIGHT (c) 1992 by Claus Gittinger
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80
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All Rights Reserved
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54
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144
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$Header: /cvs/stx/stx/libview/Cursor.st,v 1.17 1995-05-16 17:12:35 claus Exp $
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0
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'!
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!Cursor class methodsFor:'documentation'!
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46
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copyright
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"
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COPYRIGHT (c) 1992 by Claus Gittinger
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80
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All Rights Reserved
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46
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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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43 |
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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version
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"
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144
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$Header: /cvs/stx/stx/libview/Cursor.st,v 1.17 1995-05-16 17:12:35 claus Exp $
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46
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"
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!
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0
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documentation
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38
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"
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I represents cursors in a device independent manner.
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144
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Normally, cursors are defined at view creation time,
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via 'aView cursor:aCursor'.
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38
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Instance variables:
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80
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shape <Symbol> a shape (i.e. #arrow, #hand, ...) or nil
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sourceForm <Form> if shape is nil, the source bits
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maskForm <Form> if shape is nil, the mask bits
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hotX <SmallInteger> if shape is nil, the hotSpot x of the cursor
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hotY <SmallInteger> if shape is nil, the hotSpot y of the cursor
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device <aDevice> the device, if associated to one
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cursorId <anObject> the device-specific id if device is nonNil
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0
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38
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class variables:
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0
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80
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Lobby <Registry> keeps track of known device cursors
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0
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80
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DefaultFgColor <Color> default foreground color for cursors (usually black)
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DefaultBgColor <Color> default background color for cursors (usually white)
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0
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80
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NormalCursor <Cursor> cached instance of normal (arrow) cursor
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...
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0
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38
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"
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144
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!
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examples
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"
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get a standard cursor:
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Cursor wait
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Cursor stop
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Cursor normal
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create a custom cursor:
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Cursor extent:16@16
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fromArray:#[ 2r00000000 2r00000000
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2r00000000 2r00000000
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2r00000000 2r00000000
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2r11111111 2r11111111
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2r11111111 2r11111111
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2r00000000 2r00000000
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2r00000000 2r00000000
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2r11111111 2r11111111
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2r11111111 2r11111111
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2r00000000 2r00000000
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2r00000000 2r00000000
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2r11111111 2r11111111
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2r11111111 2r11111111
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2r00000000 2r00000000
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2r00000000 2r00000000
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2r00000000 2r00000000]
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offset:-8@-8
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define a cursor for a view:
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|v|
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v := View new.
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v cursor:Cursor stop.
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v open.
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with above custom cursor:
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|v|
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v := View new.
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v cursor:(
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Cursor extent:16@16
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fromArray:#[ 2r00000000 2r00000000
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2r00000000 2r00000000
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2r00000000 2r00000000
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2r11111111 2r11111111
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2r11111111 2r11111111
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2r00000000 2r00000000
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2r00000000 2r00000000
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2r11111111 2r11111111
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2r11111111 2r11111111
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2r00000000 2r00000000
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2r00000000 2r00000000
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2r11111111 2r11111111
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2r11111111 2r11111111
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2r00000000 2r00000000
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2r00000000 2r00000000
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2r00000000 2r00000000]
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offset:-8@-8).
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v open.
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147 |
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with multiple views:
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|v1 v2 top|
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top := StandardSystemView new.
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top extent:300@300.
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v1 := View origin:0.0@0.0 corner:1.0@0.5 in:top.
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v1 viewBackground:(Color grey:75).
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v1 cursor:Cursor thumbsUp.
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v2 := View origin:0.0@0.5 corner:1.0@1.0 in:top.
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v2 viewBackground:(Color white).
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v2 cursor:Cursor wait.
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top open.
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162 |
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show a cursor in ALL ST/X views for a while:
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Cursor wait
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showWhile:[
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(Delay forSeconds:5) wait
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]
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show a cursor in a single view for a while:
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|v1 v2 top|
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top := StandardSystemView new.
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top extent:300@300.
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v1 := View origin:0.0@0.0 corner:1.0@0.5 in:top.
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v1 viewBackground:(Color grey:75).
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v2 := View origin:0.0@0.5 corner:1.0@1.0 in:top.
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v2 viewBackground:(Color white).
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top open.
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182 |
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v1 withCursor:Cursor wait
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do:[
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(Delay forSeconds:10) wait
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]
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187 |
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show a cursor in all views belonging to a windowGroup:
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(have to wait until top is visible to access windowGroup)
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|v1 v2 top|
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top := StandardSystemView new.
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top extent:300@300.
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v1 := View origin:0.0@0.0 corner:1.0@0.5 in:top.
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v1 viewBackground:(Color grey:75).
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v2 := View origin:0.0@0.5 corner:1.0@1.0 in:top.
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v2 viewBackground:(Color white).
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top open.
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201 |
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[top shown] whileFalse:[Processor yield].
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top windowGroup
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withCursor:Cursor wait
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do:[
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(Delay forSeconds:10) wait
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]
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"
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0
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209 |
! !
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!Cursor class methodsFor:'initialization'!
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initialize
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23
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Lobby isNil ifTrue:[
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80
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Lobby := Registry new.
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0
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216 |
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80
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217 |
"want to be informed when returning from snapshot"
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ObjectMemory addDependent:self
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0
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]
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!
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221 |
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flushDeviceCursors
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"unassign all cursors from their device"
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115
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Lobby do:[:aCursor |
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aCursor restored.
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227 |
Lobby changed:aCursor
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]
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!
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230 |
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update:something
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232 |
"sent when restarted after a snapIn"
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233 |
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(something == #restarted) ifTrue:[
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80
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self flushDeviceCursors
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0
|
236 |
]
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237 |
! !
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238 |
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239 |
!Cursor class methodsFor:'default access'!
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240 |
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defaultFgColor:fgColor defaultBgColor:bgColor
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"set the default colors used for cursors"
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243 |
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DefaultFgColor := fgColor.
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DefaultBgColor := bgColor
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! !
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247 |
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248 |
!Cursor class methodsFor:'instance creation'!
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249 |
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extent:extent fromArray:array offset:offset
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"create a new bitmap cursor from bits in the array argument
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- ST-80 compatibility"
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253 |
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|sourceForm|
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255 |
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sourceForm := Form extent:extent fromArray:array offset:offset.
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257 |
^ self sourceForm:sourceForm maskForm:sourceForm hotSpot:(offset negated)
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258 |
!
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259 |
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extent:extent sourceArray:sourceArray maskArray:maskArray offset:offset
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261 |
"create a new bitmap cursor with mask from bits in sourceArray and
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262 |
maskArray"
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263 |
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264 |
|sourceForm maskForm|
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265 |
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266 |
sourceForm := Form extent:extent fromArray:sourceArray offset:offset.
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267 |
maskForm := Form extent:extent fromArray:maskArray offset:offset.
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268 |
^ self sourceForm:sourceForm maskForm:maskForm hotSpot:(offset negated)
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269 |
!
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270 |
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271 |
sourceForm:aForm
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272 |
"return a new cursor.
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273 |
Source- and mask-Bits are taken from aForm; hotSpot is center"
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274 |
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275 |
^ self sourceForm:aForm
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80
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276 |
maskForm:aForm
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277 |
hotX:(aForm width // 2)
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278 |
hotY:(aForm height // 2)
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0
|
279 |
!
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280 |
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281 |
sourceForm:sourceForm maskForm:maskForm
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282 |
"return a new cursor. hotSpot is center"
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283 |
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284 |
^ self sourceForm:sourceForm
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80
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285 |
maskForm:maskForm
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286 |
hotX:(sourceForm width // 2)
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287 |
hotY:(sourceForm height // 2)
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0
|
288 |
!
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289 |
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290 |
sourceForm:sourceForm maskForm:maskForm hotSpot:aPoint
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291 |
"return a new cursor"
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292 |
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293 |
^ self sourceForm:sourceForm
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80
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294 |
maskForm:maskForm
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295 |
hotX:(aPoint x)
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296 |
hotY:(aPoint y)
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0
|
297 |
!
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298 |
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299 |
sourceForm:sourceForm maskForm:maskForm hotX:hotX hotY:hotY
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300 |
"return a new cursor"
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301 |
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302 |
|newCursor|
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303 |
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304 |
"first look if not already known"
|
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115
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305 |
Lobby do:[:aCursor |
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80
|
306 |
(aCursor sourceForm == sourceForm) ifTrue:[
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|
307 |
(aCursor maskForm == maskForm) ifTrue:[
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|
308 |
(aCursor hotX == hotX) ifTrue:[
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|
309 |
(aCursor hotY == hotY) ifTrue:[
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310 |
^ aCursor
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|
311 |
]
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|
312 |
]
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|
313 |
]
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|
314 |
]
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0
|
315 |
].
|
|
35
|
316 |
(sourceForm isNil or:[maskForm isNil]) ifTrue:[^ nil].
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|
317 |
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2
|
318 |
newCursor := self basicNew setSourceForm:sourceForm
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80
|
319 |
maskForm:maskForm
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|
320 |
hotX:hotX
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|
321 |
hotY:hotY.
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23
|
322 |
Lobby register:newCursor.
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0
|
323 |
^ newCursor
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|
324 |
!
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|
325 |
|
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|
326 |
shape:aShape
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|
327 |
"return one of the standard cursors.
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|
328 |
Each display may offer different shapes - see for example XWorkstation
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|
329 |
for details (however a basic minimum set should be supported by all)"
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|
330 |
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|
331 |
|newCursor|
|
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|
332 |
|
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|
333 |
"first look if not already known"
|
|
115
|
334 |
Lobby do:[:aCursor |
|
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80
|
335 |
(aCursor shape == aShape) ifTrue:[
|
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|
336 |
^ aCursor
|
|
|
337 |
]
|
|
0
|
338 |
].
|
|
2
|
339 |
newCursor := self basicNew setShape:aShape.
|
|
23
|
340 |
Lobby register:newCursor.
|
|
0
|
341 |
^ newCursor
|
|
|
342 |
!
|
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|
343 |
|
|
71
|
344 |
shape:aShape on:aDevice
|
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|
345 |
"return one of the standard cursors already associated to aDevice.
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|
346 |
This is the same as '(Cursor shape:aShape) on:aDevice' but somwehat faster."
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|
347 |
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|
348 |
|newCursor oldCursor|
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|
349 |
|
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|
350 |
"first look if not already known"
|
|
115
|
351 |
Lobby do:[:aCursor |
|
|
71
|
352 |
(aCursor shape == aShape) ifTrue:[
|
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|
353 |
(aCursor device == aDevice) ifTrue:[^ aCursor].
|
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|
354 |
oldCursor := aCursor
|
|
|
355 |
].
|
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|
356 |
].
|
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|
357 |
|
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|
358 |
"found one with same shape, but different device"
|
|
|
359 |
oldCursor notNil ifTrue:[
|
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|
360 |
^ oldCursor newOn:aDevice
|
|
|
361 |
].
|
|
|
362 |
|
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|
363 |
newCursor := self basicNew setShape:aShape.
|
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|
364 |
Lobby register:newCursor.
|
|
|
365 |
^ newCursor
|
|
|
366 |
!
|
|
|
367 |
|
|
0
|
368 |
fileCursorNamed:cursorName
|
|
|
369 |
"return a cursor read from the files 'cursorName_bits.bit' and
|
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|
370 |
'cursorName_mask.bit' - return nil if file does not exist"
|
|
|
371 |
|
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|
372 |
|cursorBits maskBits|
|
|
|
373 |
|
|
|
374 |
cursorBits := Form fromFile:(cursorName , '_bits.bit').
|
|
|
375 |
cursorBits notNil ifTrue:[
|
|
80
|
376 |
maskBits := Form fromFile:(cursorName , '_mask.bit').
|
|
|
377 |
maskBits notNil ifTrue:[
|
|
|
378 |
^ self sourceForm:cursorBits maskForm:maskBits
|
|
|
379 |
]
|
|
0
|
380 |
].
|
|
|
381 |
^ nil
|
|
|
382 |
! !
|
|
|
383 |
|
|
|
384 |
!Cursor class methodsFor:'standard cursors'!
|
|
|
385 |
|
|
|
386 |
normal
|
|
|
387 |
"return the normal cursor; an arrow.
|
|
|
388 |
for ST-80 compatibility"
|
|
|
389 |
|
|
|
390 |
NormalCursor isNil ifTrue:[
|
|
80
|
391 |
NormalCursor := self arrow on:Display
|
|
0
|
392 |
].
|
|
|
393 |
^ NormalCursor
|
|
|
394 |
!
|
|
|
395 |
|
|
|
396 |
hand
|
|
|
397 |
"return a hand cursor"
|
|
|
398 |
|
|
|
399 |
HandCursor isNil ifTrue:[
|
|
80
|
400 |
HandCursor := self shape:#upRightHand on:Display
|
|
0
|
401 |
].
|
|
|
402 |
^ HandCursor
|
|
|
403 |
!
|
|
|
404 |
|
|
|
405 |
upRightHand
|
|
|
406 |
"return an up-right-hand cursor"
|
|
|
407 |
|
|
|
408 |
^ self shape:#upRightHand
|
|
|
409 |
!
|
|
|
410 |
|
|
|
411 |
leftHand
|
|
|
412 |
"return a left-hand cursor"
|
|
|
413 |
|
|
|
414 |
^ self shape:#leftHand
|
|
|
415 |
!
|
|
|
416 |
|
|
|
417 |
upDownArrow
|
|
|
418 |
"return an up-down-arrow cursor"
|
|
|
419 |
|
|
|
420 |
UpDownArrowCursor isNil ifTrue:[
|
|
80
|
421 |
UpDownArrowCursor := self shape:#upDownArrow on:Display
|
|
0
|
422 |
].
|
|
|
423 |
^ UpDownArrowCursor
|
|
|
424 |
!
|
|
|
425 |
|
|
|
426 |
leftRightArrow
|
|
|
427 |
"return a left-right-arrow cursor"
|
|
|
428 |
|
|
|
429 |
LeftRightArrowCursor isNil ifTrue:[
|
|
80
|
430 |
LeftRightArrowCursor := self shape:#leftRightArrow on:Display
|
|
0
|
431 |
].
|
|
|
432 |
^ LeftRightArrowCursor
|
|
|
433 |
!
|
|
|
434 |
|
|
|
435 |
upLimitArrow
|
|
|
436 |
"return an up-arrow-to-limit cursor"
|
|
|
437 |
|
|
71
|
438 |
^ self shape:#upLimitArrow on:Display
|
|
0
|
439 |
!
|
|
|
440 |
|
|
|
441 |
downLimitArrow
|
|
|
442 |
"return a down-arrow-to-limit cursor"
|
|
|
443 |
|
|
71
|
444 |
^ self shape:#downLimitArrow on:Display
|
|
0
|
445 |
!
|
|
|
446 |
|
|
|
447 |
leftLimitArrow
|
|
|
448 |
"return a left-arrow-to-limit cursor"
|
|
|
449 |
|
|
71
|
450 |
^ self shape:#leftLimitArrow on:Display
|
|
0
|
451 |
!
|
|
|
452 |
|
|
|
453 |
rightLimitArrowOn
|
|
|
454 |
"return a right-arrow-to-limit cursor"
|
|
|
455 |
|
|
71
|
456 |
^ self shape:#rightLimitArrow on:Display
|
|
0
|
457 |
!
|
|
|
458 |
|
|
|
459 |
text
|
|
|
460 |
"return a text-cursor"
|
|
|
461 |
|
|
71
|
462 |
^ self shape:#text on:Display
|
|
0
|
463 |
!
|
|
|
464 |
|
|
|
465 |
arrow
|
|
|
466 |
"return an arrow (up-left-arrow) cursor"
|
|
|
467 |
|
|
71
|
468 |
^ self shape:#upLeftArrow on:Display
|
|
0
|
469 |
!
|
|
|
470 |
|
|
|
471 |
upLeftArrow
|
|
|
472 |
"return an up-right-arrow cursor"
|
|
|
473 |
|
|
71
|
474 |
^ self shape:#upLeftArrow on:Display
|
|
0
|
475 |
!
|
|
|
476 |
|
|
|
477 |
upRightArrow
|
|
|
478 |
"return an up-right-arrow cursor"
|
|
|
479 |
|
|
71
|
480 |
^ self shape:#upRightArrow on:Display
|
|
0
|
481 |
!
|
|
|
482 |
|
|
|
483 |
questionMark
|
|
|
484 |
"return a question-mark cursor"
|
|
|
485 |
|
|
71
|
486 |
^ self shape:#questionMark on:Display
|
|
0
|
487 |
!
|
|
|
488 |
|
|
|
489 |
cross
|
|
|
490 |
"return a cross cursor"
|
|
|
491 |
|
|
71
|
492 |
^ self shape:#cross on:Display
|
|
0
|
493 |
!
|
|
|
494 |
|
|
|
495 |
origin
|
|
|
496 |
"return an origin cursor"
|
|
|
497 |
|
|
|
498 |
OriginCursor isNil ifTrue:[
|
|
80
|
499 |
OriginCursor := self shape:#origin on:Display
|
|
0
|
500 |
].
|
|
|
501 |
^ OriginCursor
|
|
|
502 |
!
|
|
|
503 |
|
|
|
504 |
corner
|
|
|
505 |
"return a corner cursor"
|
|
|
506 |
|
|
|
507 |
CornerCursor isNil ifTrue:[
|
|
80
|
508 |
CornerCursor := self shape:#corner on:Display
|
|
0
|
509 |
].
|
|
|
510 |
^ CornerCursor
|
|
|
511 |
!
|
|
|
512 |
|
|
80
|
513 |
topRight
|
|
|
514 |
"return a top-right corner cursor"
|
|
|
515 |
|
|
|
516 |
^ self shape:#topRight on:Display
|
|
|
517 |
!
|
|
|
518 |
|
|
|
519 |
bottomLeft
|
|
|
520 |
"return a bottom-left corner cursor"
|
|
|
521 |
|
|
|
522 |
^ self shape:#bottomLeft on:Display
|
|
|
523 |
!
|
|
|
524 |
|
|
|
525 |
bottomRight
|
|
|
526 |
"return a bottom-right corner cursor"
|
|
|
527 |
|
|
|
528 |
^ self corner
|
|
|
529 |
!
|
|
|
530 |
|
|
|
531 |
topLeft
|
|
|
532 |
"return a top-left corner cursor"
|
|
|
533 |
|
|
|
534 |
^ self origin
|
|
|
535 |
!
|
|
|
536 |
|
|
0
|
537 |
crossHair
|
|
|
538 |
"return a crossHair cursor"
|
|
|
539 |
|
|
|
540 |
CrossHairCursor isNil ifTrue:[
|
|
80
|
541 |
CrossHairCursor := self shape:#crossHair on:Display
|
|
0
|
542 |
].
|
|
|
543 |
^ CrossHairCursor
|
|
|
544 |
!
|
|
|
545 |
|
|
|
546 |
fourWay
|
|
|
547 |
"return a four-way arrow cursor"
|
|
|
548 |
|
|
|
549 |
FourWayCursor isNil ifTrue:[
|
|
80
|
550 |
FourWayCursor := self shape:#fourWay on:Display
|
|
0
|
551 |
].
|
|
|
552 |
^ FourWayCursor
|
|
|
553 |
!
|
|
|
554 |
|
|
54
|
555 |
stop
|
|
71
|
556 |
"return a stop cursor (the default here is a wait-cursor)"
|
|
54
|
557 |
|
|
71
|
558 |
^ self wait
|
|
54
|
559 |
!
|
|
|
560 |
|
|
0
|
561 |
wait
|
|
|
562 |
"return a wait cursor"
|
|
|
563 |
|
|
|
564 |
WaitCursor isNil ifTrue:[
|
|
80
|
565 |
WaitCursor := self shape:#wait on:Display
|
|
0
|
566 |
].
|
|
|
567 |
^ WaitCursor
|
|
|
568 |
!
|
|
|
569 |
|
|
|
570 |
read
|
|
|
571 |
"return a reading-file cursor"
|
|
|
572 |
|
|
71
|
573 |
^ self wait
|
|
0
|
574 |
!
|
|
|
575 |
|
|
|
576 |
write
|
|
|
577 |
"return a writing-file cursor"
|
|
|
578 |
|
|
71
|
579 |
^ self wait
|
|
0
|
580 |
!
|
|
|
581 |
|
|
|
582 |
execute
|
|
|
583 |
"return a execute cursor - ST-80 compatibility"
|
|
|
584 |
|
|
71
|
585 |
^ self wait
|
|
56
|
586 |
!
|
|
|
587 |
|
|
|
588 |
thumbsUp
|
|
|
589 |
"return a hand cursor - ST-80 compatibility"
|
|
|
590 |
|
|
|
591 |
^ self hand
|
|
|
592 |
!
|
|
|
593 |
|
|
|
594 |
thumbsDown
|
|
|
595 |
"return a hand cursor - ST-80 compatibility"
|
|
|
596 |
|
|
|
597 |
^ self hand
|
|
0
|
598 |
! !
|
|
|
599 |
|
|
71
|
600 |
!Cursor methodsFor:'copying'!
|
|
|
601 |
|
|
|
602 |
postCopy
|
|
|
603 |
sourceForm := sourceForm copy.
|
|
|
604 |
maskForm := maskForm copy.
|
|
|
605 |
device := cursorId := nil
|
|
|
606 |
! !
|
|
|
607 |
|
|
0
|
608 |
!Cursor methodsFor:'instance release'!
|
|
|
609 |
|
|
71
|
610 |
shallowCopyForFinalization
|
|
|
611 |
^ self class basicNew setDevice:device id:cursorId
|
|
|
612 |
!
|
|
|
613 |
|
|
0
|
614 |
disposed
|
|
|
615 |
"some Cursor has been collected - tell it to the x-server"
|
|
|
616 |
|
|
|
617 |
cursorId notNil ifTrue:[
|
|
80
|
618 |
device destroyCursor:cursorId.
|
|
0
|
619 |
]
|
|
|
620 |
! !
|
|
|
621 |
|
|
2
|
622 |
!Cursor methodsFor:'private accessing'!
|
|
|
623 |
|
|
|
624 |
setShape:aShapeSymbol
|
|
|
625 |
"set the shape"
|
|
|
626 |
|
|
|
627 |
shape := aShapeSymbol.
|
|
|
628 |
!
|
|
|
629 |
|
|
|
630 |
setSourceForm:sForm maskForm:mForm hotX:hx hotY:hy
|
|
|
631 |
"set the forms and hotspot"
|
|
|
632 |
|
|
|
633 |
sourceForm := sForm.
|
|
|
634 |
maskForm := mForm.
|
|
|
635 |
hotX := hx.
|
|
|
636 |
hotY := hy.
|
|
|
637 |
!
|
|
|
638 |
|
|
|
639 |
setDevice:aDevice id:anId
|
|
|
640 |
"set the device and deviceId of the receiver"
|
|
|
641 |
|
|
|
642 |
device := aDevice.
|
|
|
643 |
cursorId := anId
|
|
|
644 |
! !
|
|
|
645 |
|
|
0
|
646 |
!Cursor methodsFor:'accessing'!
|
|
|
647 |
|
|
|
648 |
id
|
|
|
649 |
"return the cursors deviceId"
|
|
|
650 |
|
|
|
651 |
^ cursorId
|
|
|
652 |
!
|
|
|
653 |
|
|
|
654 |
device
|
|
|
655 |
"return the device I am associated with"
|
|
|
656 |
|
|
|
657 |
^ device
|
|
|
658 |
!
|
|
|
659 |
|
|
|
660 |
shape
|
|
|
661 |
"return the shape"
|
|
|
662 |
|
|
|
663 |
^ shape
|
|
|
664 |
!
|
|
|
665 |
|
|
|
666 |
sourceForm
|
|
|
667 |
"return the source-form of the receiver"
|
|
|
668 |
|
|
|
669 |
^ sourceForm
|
|
|
670 |
!
|
|
|
671 |
|
|
|
672 |
sourceForm:aForm
|
|
|
673 |
"set the source-form of the receiver"
|
|
|
674 |
|
|
|
675 |
sourceForm := aForm
|
|
|
676 |
!
|
|
|
677 |
|
|
|
678 |
maskForm
|
|
|
679 |
"return the mask-form of the receiver"
|
|
|
680 |
|
|
|
681 |
^ maskForm
|
|
|
682 |
!
|
|
|
683 |
|
|
|
684 |
maskForm:aForm
|
|
|
685 |
"set the mask-form of the receiver"
|
|
|
686 |
|
|
|
687 |
maskForm := aForm
|
|
|
688 |
!
|
|
|
689 |
|
|
|
690 |
hotX
|
|
|
691 |
"return the hotspots x-coordinate of the receiver"
|
|
|
692 |
|
|
|
693 |
^ hotX
|
|
|
694 |
!
|
|
|
695 |
|
|
|
696 |
hotY
|
|
|
697 |
"return the hotspots y-coordinate of the receiver"
|
|
|
698 |
|
|
|
699 |
^ hotY
|
|
|
700 |
!
|
|
|
701 |
|
|
|
702 |
foreground:fgColor background:bgColor
|
|
|
703 |
"set the cursor colors"
|
|
|
704 |
|
|
|
705 |
device colorCursor:cursorId foreground:fgColor background:bgColor
|
|
|
706 |
! !
|
|
|
707 |
|
|
|
708 |
!Cursor methodsFor:'creating a device cursor'!
|
|
|
709 |
|
|
|
710 |
on:aDevice
|
|
|
711 |
"create a new Cursor representing the same cursor as
|
|
|
712 |
myself on aDevice; if one already exists, return the one"
|
|
|
713 |
|
|
|
714 |
aDevice isNil ifTrue:[
|
|
80
|
715 |
"this may not happen"
|
|
|
716 |
self error:'nil device'
|
|
0
|
717 |
].
|
|
|
718 |
|
|
71
|
719 |
"if I am already assigned to that device ..."
|
|
0
|
720 |
(device == aDevice) ifTrue:[^ self].
|
|
|
721 |
|
|
|
722 |
"first look if not already there"
|
|
115
|
723 |
Lobby do:[:aCursor |
|
|
80
|
724 |
(aCursor device == aDevice) ifTrue:[
|
|
|
725 |
shape notNil ifTrue:[
|
|
|
726 |
(aCursor shape == shape) ifTrue:[
|
|
|
727 |
^ aCursor
|
|
|
728 |
]
|
|
|
729 |
] ifFalse:[
|
|
|
730 |
(aCursor sourceForm == sourceForm) ifTrue:[
|
|
|
731 |
(aCursor maskForm == maskForm) ifTrue:[
|
|
|
732 |
(aCursor hotX == hotX) ifTrue:[
|
|
|
733 |
(aCursor hotY == hotY) ifTrue:[
|
|
|
734 |
^ aCursor
|
|
|
735 |
]
|
|
|
736 |
]
|
|
|
737 |
]
|
|
|
738 |
]
|
|
|
739 |
]
|
|
|
740 |
]
|
|
0
|
741 |
].
|
|
71
|
742 |
^ self newOn:aDevice
|
|
|
743 |
! !
|
|
|
744 |
|
|
|
745 |
!Cursor methodsFor:'private'!
|
|
|
746 |
|
|
|
747 |
newOn:aDevice
|
|
|
748 |
"create a new Cursor representing the same cursor as
|
|
|
749 |
myself on aDevice. Dont search the lobby."
|
|
|
750 |
|
|
133
|
751 |
|newCursor id sF mF|
|
|
0
|
752 |
|
|
|
753 |
"ask that device for the cursor"
|
|
|
754 |
shape notNil ifTrue:[
|
|
80
|
755 |
id := aDevice createCursorShape:shape.
|
|
|
756 |
id isNil ifTrue:[
|
|
89
|
757 |
'CURSOR: no cursor with shape:' errorPrint. shape errorPrintNewline.
|
|
80
|
758 |
^ nil
|
|
|
759 |
].
|
|
0
|
760 |
] ifFalse:[
|
|
133
|
761 |
sourceForm notNil ifTrue:[
|
|
|
762 |
sF := sourceForm on:aDevice.
|
|
|
763 |
].
|
|
|
764 |
maskForm notNil ifTrue:[
|
|
|
765 |
mF := maskForm on:aDevice.
|
|
|
766 |
].
|
|
|
767 |
(sF isNil or:[mF isNil]) ifTrue:[
|
|
|
768 |
'CURSOR: cursor has no form' errorPrintNewline.
|
|
|
769 |
^ nil
|
|
|
770 |
].
|
|
|
771 |
sourceForm := sF.
|
|
|
772 |
maskForm := mF.
|
|
|
773 |
|
|
80
|
774 |
id := aDevice createCursorSourceForm:sourceForm
|
|
|
775 |
maskForm:maskForm
|
|
|
776 |
hotX:hotX
|
|
|
777 |
hotY:hotY.
|
|
|
778 |
id isNil ifTrue:[
|
|
89
|
779 |
'CURSOR: cannot create pixmap cursor' errorPrintNewline.
|
|
80
|
780 |
^ nil
|
|
|
781 |
].
|
|
0
|
782 |
].
|
|
|
783 |
|
|
|
784 |
"goody for IRIXs red cursor"
|
|
|
785 |
DefaultFgColor notNil ifTrue:[
|
|
80
|
786 |
aDevice colorCursor:id foreground:DefaultFgColor
|
|
|
787 |
background:DefaultBgColor
|
|
0
|
788 |
].
|
|
|
789 |
|
|
|
790 |
device isNil ifTrue:[
|
|
80
|
791 |
"receiver was not associated - do it now"
|
|
|
792 |
device := aDevice.
|
|
|
793 |
cursorId := id.
|
|
0
|
794 |
|
|
80
|
795 |
"must re-register, the old registration had a nil cursorId in it"
|
|
|
796 |
Lobby changed:self.
|
|
|
797 |
^ self
|
|
0
|
798 |
].
|
|
|
799 |
|
|
|
800 |
"receiver was already associated to another device - need a new cursor"
|
|
2
|
801 |
newCursor := self class basicNew.
|
|
0
|
802 |
shape notNil ifTrue:[
|
|
80
|
803 |
newCursor setShape:shape.
|
|
0
|
804 |
] ifFalse:[
|
|
80
|
805 |
newCursor setSourceForm:sourceForm
|
|
|
806 |
maskForm:maskForm
|
|
|
807 |
hotX:hotX
|
|
|
808 |
hotY:hotY
|
|
0
|
809 |
].
|
|
2
|
810 |
newCursor setDevice:aDevice id:id.
|
|
23
|
811 |
Lobby register:newCursor.
|
|
0
|
812 |
^ newCursor
|
|
71
|
813 |
!
|
|
0
|
814 |
|
|
|
815 |
device:aDevice
|
|
|
816 |
device := aDevice
|
|
|
817 |
!
|
|
|
818 |
|
|
|
819 |
id:anId
|
|
|
820 |
"set the cursors deviceId"
|
|
|
821 |
|
|
|
822 |
cursorId := anId
|
|
|
823 |
!
|
|
|
824 |
|
|
2
|
825 |
restored
|
|
0
|
826 |
"set both device and id"
|
|
|
827 |
|
|
|
828 |
device := nil.
|
|
|
829 |
cursorId := nil
|
|
|
830 |
! !
|
|
|
831 |
|
|
|
832 |
!Cursor methodsFor:'displaying'!
|
|
|
833 |
|
|
|
834 |
showIn:aView
|
|
|
835 |
aView cursor:self
|
|
|
836 |
!
|
|
|
837 |
|
|
|
838 |
showIn:aView while:aBlock
|
|
|
839 |
|savedCursor|
|
|
|
840 |
|
|
|
841 |
savedCursor := aView cursor.
|
|
|
842 |
aView cursor:self.
|
|
|
843 |
[
|
|
80
|
844 |
aBlock value.
|
|
0
|
845 |
] valueNowOrOnUnwindDo:[
|
|
80
|
846 |
aView cursor:savedCursor
|
|
0
|
847 |
]
|
|
|
848 |
!
|
|
|
849 |
|
|
|
850 |
showWhile:aBlock
|
|
|
851 |
"change all views cursors to the receiver.
|
|
|
852 |
In X this seems to be very slow"
|
|
|
853 |
|
|
|
854 |
|v|
|
|
|
855 |
|
|
|
856 |
Display setCursors:self.
|
|
|
857 |
v := aBlock valueNowOrOnUnwindDo:[
|
|
80
|
858 |
Display restoreCursors.
|
|
0
|
859 |
].
|
|
|
860 |
^ v
|
|
|
861 |
!
|
|
|
862 |
|
|
|
863 |
displayOn:aGC at:origin clippingBox:aRectangle rule:aRule mask:aMask
|
|
|
864 |
"ST-80 compatibility;
|
|
|
865 |
limited functionality: can only display bitmap cursors (yet)"
|
|
|
866 |
|
|
|
867 |
sourceForm notNil ifTrue:[
|
|
80
|
868 |
sourceForm displayOn:aGC at:origin clippingBox:aRectangle
|
|
|
869 |
rule:aRule mask:aMask
|
|
0
|
870 |
]
|
|
|
871 |
! !
|