author | Claus Gittinger <cg@exept.de> |
Sun, 02 Nov 1997 19:54:27 +0100 | |
changeset 736 | d9f874e6b1e4 |
parent 680 | 6157661790fd |
child 861 | 10bbb13fcb05 |
permissions | -rw-r--r-- |
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" |
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COPYRIGHT (c) 1996 by eXept Software AG / 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:#DragAndDropManager |
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instanceVariableNames:'dragView motionAction releaseAction initialPoint previousPoint |
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rememberedDelegate dragBlock lineMode dropAction opaque saveUnder |
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dragSize dragOffset dropObjects saveCursor lastView |
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lastScreenPosition' |
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classVariableNames:'DragOriginatorQuerySignal DragOffsetQuerySignal' |
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poolDictionaries:'' |
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category:'Interface-Support' |
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! |
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View subclass:#DemoView |
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instanceVariableNames:'' |
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classVariableNames:'' |
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poolDictionaries:'' |
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privateIn:DragAndDropManager |
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! |
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View subclass:#DemoView2 |
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instanceVariableNames:'' |
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classVariableNames:'' |
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poolDictionaries:'' |
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privateIn:DragAndDropManager |
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View subclass:#DemoView3 |
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instanceVariableNames:'' |
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classVariableNames:'' |
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poolDictionaries:'' |
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privateIn:DragAndDropManager |
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! |
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!DragAndDropManager class methodsFor:'documentation'! |
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copyright |
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" |
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COPYRIGHT (c) 1996 by eXept Software AG / 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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this class provides low-level drag & drop mechanisms. |
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Easy to use interface interfaces: |
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A drag is usually initiated by a view or its application model, |
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when a selection is moved (for example, SelectionInListView can |
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be initializd to do so). |
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There, the view creates a collection of dropObjects from its selection, |
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and starts the drag operation with: |
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DragAndDropManager startDrag:collectionOfDragObjects from:aView. |
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This easy to use interface starts a drag and also drops the collection |
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into the target view. |
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While dragging, a thumbsUp cursor is shown, if the view-under-the-drag |
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can handle a drop, a thumbsDown is shown if not, and a question mark |
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is shown for alien views (which means: we dont know). |
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Alien view drop is supported (but no 'canDrop' query). |
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For rubber-band line dragging, two more easy-to-use startup methods are |
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provided: |
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DragAndDropManager |
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startLineDragIn:aView at:position |
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atEnd:aFourArgEndBlock |
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and: |
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DragAndDropManager |
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startArrowDragIn:aView at:position |
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atEnd:aFourArgEndBlock |
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both of the above expect a 4-arg block to be passed, which will be |
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evaluated at end-drag, with the target view, its viewID, the drop position |
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on the screen and within the target view as arguments. |
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Expert interface: |
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More control over the dragging (i.e. the drawing procedure) |
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can be optained, by passing a dragBlock and an endDrag action: |
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aDragAndDropMgr := DragAndDropManager new. |
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aDragAndDropMgr dropObjects:(self collectionOfDragObjects). |
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aDragAndDropMgr |
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startOpaqueDrag:[:aPoint :aView :dropObjects | |
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self |
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showDragging:dropObjects |
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in:aView |
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at:aPoint - (xOffset@0) |
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] |
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offset:clickOffset |
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extent:saveUnderExtent |
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in:self |
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at:clickPoint |
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atEnd:[:v :vId :posScreen :posView | ... ] |
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the arguments are: |
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startOpaqueDrag: |
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a 3-arg block, which is evaluated by the d&d manager whenever the |
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mouse moves; it is supposed to draw the dropObjects at some position |
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in the passed view. |
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offset: |
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a clickOffset; drawing is offset by this amount |
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extent: |
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a save extent; the size of the screen area that must be saved during |
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the drag operation |
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in: |
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initiating view |
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at: |
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position where d&d operation starts |
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atEnd: |
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a 4-arg block that is evaluated when the d&d is finished. |
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It gets the target view (or nil, for alien views), the targets |
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view ID (needed if its an alien view), the screen position and the |
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relative position within the target view of the drop as arguments. |
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|
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For internal (ST/X) views, the dropBlock should perform |
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a simple canDrop:/doDrop message. |
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|
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For alien views, the Displays d&d functions can be used. |
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|
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|
348 | 151 |
[author:] |
152 |
Claus Gittinger |
|
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|
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[see also:] |
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DemoView DemoView2 DemoView3 - examples |
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SelectionInListView FileBrowser - for a concrete example |
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348 | 158 |
" |
159 |
||
160 |
! |
|
161 |
||
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examples |
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" |
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a button, which initiates dragging of a file-object |
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Notice that this can be dropped into the launchers panel, |
549 | 166 |
to open a fileBrowser on that directory ... |
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[exBegin] |
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|o top v| |
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|
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top := StandardSystemView new. |
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v := Button label:'press for drag' in:top. |
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v pressAction:[ |
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|o| |
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o := DropObject newFile:('/etc'). |
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DragAndDropManager startDrag:o from:v. |
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v turnOff |
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]. |
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top openWithExtent:200@200 |
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[exEnd] |
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|
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initiate a drag with some offset: |
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[exBegin] |
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|o top v| |
341 | 184 |
|
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top := StandardSystemView new. |
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v := Button label:'press for drag' in:top. |
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v pressAction:[ |
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|o| |
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o := DropObject newFile:('.'). |
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DragAndDropManager startDrag:o from:v offset:10@10. |
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v turnOff |
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]. |
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top openWithExtent:200@200 |
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[exEnd] |
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|
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initiate a line drag: |
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[exBegin] |
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|o top v endAction| |
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|
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endAction := [ :v :vID :sPos :vPos | |
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Transcript show:'end drag in '. |
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v isNil ifTrue:[ |
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Transcript show:'alien view' |
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] ifFalse:[ |
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Transcript show:v |
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]. |
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Transcript show:' at screen: '; show:sPos; |
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show:' in view: '; showCR:vPos |
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]. |
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top := StandardSystemView new. |
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v := Button label:'press for drag' in:top. |
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v pressAction:[ |
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DragAndDropManager |
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startLineDragIn:v at:10@10 atEnd:endAction. |
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v turnOff |
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]. |
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top openWithExtent:200@200 |
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[exEnd] |
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|
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" |
341 | 221 |
! ! |
222 |
||
628 | 223 |
!DragAndDropManager class methodsFor:'initialization'! |
224 |
||
225 |
initialize |
|
226 |
DragOriginatorQuerySignal := QuerySignal new. |
|
680
6157661790fd
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DragOffsetQuerySignal := QuerySignal new. |
628 | 228 |
|
229 |
" |
|
230 |
self initialize |
|
231 |
" |
|
680
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232 |
|
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"Modified: 11.8.1997 / 00:54:21 / cg" |
628 | 234 |
! ! |
235 |
||
236 |
!DragAndDropManager class methodsFor:'Signal constants'! |
|
237 |
||
680
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dragOffsetQuerySignal |
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^ DragOffsetQuerySignal |
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|
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"Created: 11.8.1997 / 00:54:10 / cg" |
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! |
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243 |
|
628 | 244 |
dragOriginatorQuerySignal |
245 |
^ DragOriginatorQuerySignal |
|
246 |
! ! |
|
247 |
||
397 | 248 |
!DragAndDropManager class methodsFor:'simple start'! |
249 |
||
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startArrowDragIn:aView at:dragPoint atEnd:aFourArgBlock |
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"start a rubber-arrow-line dragging in aView at dragPoint. |
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When finished, evaluate the fourArgBlock with targetView, |
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targetID, screenPosition and targetViewPosition as arguments" |
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254 |
|
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^ self new |
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startArrowDragIn:aView at:dragPoint atEnd:aFourArgBlock |
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257 |
|
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" |
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|o v| |
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|
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v := Button label:'press me'. |
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v pressAction:[ |
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|o| |
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o := DropObject newFile:('.'). |
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v turnOff; repairDamage. |
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DragAndDropManager |
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startArrowDragIn:v |
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at:0@0 |
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atEnd:[:v :vID :sPos :vPos | |
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v isNil ifTrue:[ |
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271 |
Transcript show:'alien view' |
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] ifFalse:[ |
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Transcript show:'view: '; |
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show:v |
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]. |
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Transcript show:' screen: '; show:sPos; |
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show:' inView: '; showCR:vPos. |
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]. |
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]. |
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v openAt:100@100 |
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" |
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|
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"Modified: 19.4.1997 / 12:04:08 / cg" |
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! |
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285 |
|
397 | 286 |
startDrag:anObjectOrCollection from:aView |
287 |
"start a drop at the current pointer position" |
|
288 |
||
289 |
(self new) startDrag:anObjectOrCollection from:aView offset:0@0 |
|
290 |
||
291 |
" |
|
292 |
|o v| |
|
293 |
||
294 |
v := (Button label:'press me'). |
|
295 |
v pressAction:[ |
|
296 |
|o| |
|
297 |
o := DropObject newFile:('.'). |
|
298 |
DragAndDropManager startDrag:o from:v. |
|
299 |
v turnOff |
|
300 |
]. |
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301 |
v openAt:100@100 |
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302 |
" |
|
303 |
||
548
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304 |
"Modified: 19.4.1997 / 11:42:40 / cg" |
397 | 305 |
! |
306 |
||
307 |
startDrag:anObjectOrCollection from:aView offset:offset |
|
308 |
"start a drop at the current pointer position" |
|
309 |
||
310 |
(self new) startDrag:anObjectOrCollection from:aView offset:offset |
|
311 |
||
312 |
" |
|
313 |
|o v| |
|
314 |
||
315 |
v := (Button label:'press me'). |
|
316 |
v pressAction:[ |
|
317 |
|o| |
|
318 |
o := DropObject newFile:('.'). |
|
319 |
DragAndDropManager startDrag:o from:v offset:10@10. |
|
320 |
v turnOff |
|
321 |
]. |
|
322 |
v openAt:100@100 |
|
323 |
" |
|
324 |
||
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325 |
"Modified: 19.4.1997 / 11:42:45 / cg" |
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! |
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327 |
|
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startLineDragIn:aView at:dragPoint atEnd:aFourArgBlock |
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329 |
"start a rubber-line dragging in aView at dragPoint. |
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330 |
When finished, evaluate the fourArgBlock with targetView, |
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331 |
targetID, screenPosition and targetViewPosition as arguments" |
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332 |
|
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333 |
^ self new |
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334 |
startLineDragIn:aView at:dragPoint atEnd:aFourArgBlock |
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335 |
|
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336 |
" |
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337 |
|o v| |
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338 |
|
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339 |
v := (Button label:'press me'). |
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v pressAction:[ |
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341 |
|o| |
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342 |
o := DropObject newFile:('.'). |
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343 |
v turnOff; repairDamage. |
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344 |
DragAndDropManager |
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345 |
startLineDragIn:v |
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346 |
at:0@0 |
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347 |
atEnd:[:v :vID :sPos :vPos | |
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v isNil ifTrue:[ |
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349 |
Transcript show:'alien view' |
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350 |
] ifFalse:[ |
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351 |
Transcript show:'view: '; |
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352 |
show:v |
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353 |
]. |
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354 |
Transcript show:' screen: '; show:sPos; |
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355 |
show:' inView: '; showCR:vPos. |
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356 |
]. |
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357 |
]. |
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358 |
v openAt:100@100 |
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359 |
" |
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360 |
|
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361 |
"Modified: 19.4.1997 / 12:02:02 / cg" |
397 | 362 |
! ! |
363 |
||
394 | 364 |
!DragAndDropManager methodsFor:'accessing'! |
365 |
||
397 | 366 |
dropObjects |
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367 |
"return the current dropObject collection" |
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368 |
|
397 | 369 |
^ dropObjects |
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370 |
|
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371 |
"Modified: 19.4.1997 / 10:19:06 / cg" |
397 | 372 |
! |
373 |
||
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374 |
dropObjects:aCollectionOfDropObjects |
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375 |
"set the current dropObject collection" |
397 | 376 |
|
548
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377 |
aCollectionOfDropObjects isCollection ifTrue:[ |
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378 |
dropObjects := aCollectionOfDropObjects |
397 | 379 |
] ifFalse:[ |
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380 |
dropObjects := Array with:aCollectionOfDropObjects |
397 | 381 |
]. |
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382 |
|
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383 |
"Modified: 19.4.1997 / 10:19:33 / cg" |
394 | 384 |
! ! |
385 |
||
342
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386 |
!DragAndDropManager methodsFor:'dragging - generic'! |
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|
387 |
|
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388 |
doGenericDragX:x y:y |
515 | 389 |
"drag to x/y; see if the target view allows a drop |
390 |
and change the mouse pointer as appropriate" |
|
391 |
||
392 |
|view newCursor| |
|
394 | 393 |
|
342
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394 |
previousPoint notNil ifTrue:[ |
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|
395 |
(opaque and:[dragSize notNil]) ifTrue:[ |
394 | 396 |
self restoreGenericAt:previousPoint |
397 |
] ifFalse:[ |
|
398 |
self invertGenericAt:previousPoint |
|
399 |
] |
|
342
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400 |
]. |
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401 |
previousPoint := x @ y. |
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|
402 |
lastScreenPosition := nil. |
394 | 403 |
|
404 |
view := self destinationViewAt:previousPoint. |
|
405 |
view ~~ lastView ifTrue:[ |
|
397 | 406 |
view isNil ifTrue:[ |
515 | 407 |
"/ alien view - dont know if it likes a drop |
408 |
newCursor := Cursor questionMark |
|
394 | 409 |
] ifFalse:[ |
515 | 410 |
"/ ST/X view - ask it. |
628 | 411 |
(self askIfCanDrop:dropObjects in:view) ifTrue:[ |
515 | 412 |
newCursor := Cursor thumbsUp |
397 | 413 |
] ifFalse:[ |
515 | 414 |
newCursor := Cursor thumbsDown |
397 | 415 |
] |
394 | 416 |
]. |
515 | 417 |
dragView cursor:newCursor now:true. |
394 | 418 |
lastView := view |
419 |
]. |
|
420 |
||
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|
421 |
(opaque and:[dragSize notNil]) ifTrue:[ |
394 | 422 |
self drawGenericAt:previousPoint. |
423 |
] ifFalse:[ |
|
424 |
self invertGenericAt:previousPoint |
|
425 |
]. |
|
515 | 426 |
|
548
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|
427 |
"Modified: 19.4.1997 / 11:33:54 / cg" |
342
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|
428 |
! |
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|
429 |
|
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|
430 |
endGenericDragX:x y:y |
548
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|
431 |
"finish a drag; restore from saveUnder (or reinvert), |
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|
432 |
then call for the endAction" |
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|
433 |
|
342
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|
434 |
previousPoint notNil ifTrue:[ |
548
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|
435 |
(opaque and:[dragSize notNil]) ifTrue:[ |
394 | 436 |
self restoreGenericAt:previousPoint |
437 |
] ifFalse:[ |
|
438 |
self invertGenericAt:previousPoint |
|
439 |
] |
|
342
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|
440 |
]. |
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|
441 |
previousPoint := nil. |
346
1612c23d9c5d
pass all dropInfo to an end-action
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|
442 |
self uncatchEvents. |
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|
443 |
self endDragAt:x @ y |
342
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|
444 |
|
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|
445 |
"Created: 26.10.1996 / 15:17:20 / cg" |
548
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|
446 |
"Modified: 19.4.1997 / 10:41:57 / cg" |
342
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|
447 |
! |
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|
448 |
|
348 | 449 |
startGenericDrag:aTwoArgDragBlock in:aView at:p atEnd:aFourArgEndBlock |
450 |
"start a generic (caller-provided drag); |
|
548
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|
451 |
Here, an inverting drag is initiated (i.e. the drawing is undone |
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|
452 |
by inverting again). See startOpaqueDrag for another variant. |
348 | 453 |
the dragBlock, aTwoArgDragBlock will be called with two args |
454 |
aPoint and a drawingGC, to perform the drawing at some dragPoint. |
|
455 |
The drag starts in aView at point p. |
|
456 |
When finished, the endAction is called with four args: |
|
457 |
the targetView, the targetViews windowID (useful, if its an alien view), |
|
458 |
the dropPoint in root-coordinates and the dropPoint within the targetView" |
|
459 |
||
342
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|
460 |
self catchEventsFrom:aView. |
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|
461 |
motionAction := #doGenericDragX:y:. |
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|
462 |
releaseAction := #endGenericDragX:y:. |
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|
463 |
initialPoint := p. |
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|
464 |
previousPoint := nil. |
348 | 465 |
dragBlock := aTwoArgDragBlock. |
466 |
dropAction := aFourArgEndBlock. |
|
342
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|
467 |
|
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|
468 |
"Created: 26.10.1996 / 15:16:13 / cg" |
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|
469 |
"Modified: 19.4.1997 / 10:44:32 / cg" |
394 | 470 |
! |
471 |
||
472 |
startOpaqueDrag:aTwoArgDragBlock offset:offs extent:ext in:aView at:p atEnd:aFourArgEndBlock |
|
473 |
"start a generic opaque (caller-provided drag); |
|
474 |
opaque drag means, that the drawing cannot be undone by two inverting |
|
475 |
draws, but instead, the area under the dragged object must be saved |
|
476 |
and restored. The areas size to be saved/restored is passed in ext. |
|
477 |
the dragBlock, aTwoArgDragBlock will be called with two args |
|
478 |
aPoint and a drawingGC, to perform the drawing at some dragPoint. |
|
479 |
The drag starts in aView at point p. |
|
480 |
When finished, the endAction is called with four args: |
|
481 |
the targetView, the targetViews windowID (useful, if its an alien view), |
|
482 |
the dropPoint in root-coordinates and the dropPoint within the targetView" |
|
483 |
||
484 |
self catchEventsFrom:aView. |
|
485 |
motionAction := #doGenericDragX:y:. |
|
486 |
releaseAction := #endGenericDragX:y:. |
|
487 |
initialPoint := p. |
|
488 |
previousPoint := nil. |
|
489 |
dragBlock := aTwoArgDragBlock. |
|
490 |
dropAction := aFourArgEndBlock. |
|
491 |
opaque := true. |
|
492 |
dragSize := ext. |
|
493 |
dragOffset := offs. |
|
494 |
||
495 |
"Modified: 26.10.1996 / 15:09:26 / cg" |
|
496 |
"Created: 26.10.1996 / 15:16:13 / cg" |
|
497 |
||
342
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|
498 |
! ! |
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|
499 |
|
548
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|
500 |
!DragAndDropManager methodsFor:'dragging - generic - inverting'! |
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|
501 |
|
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|
502 |
invertGenericAt:ip |
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|
503 |
"draw for a generic inverting drag" |
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|
504 |
|
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|
505 |
|t offs p rootView| |
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|
506 |
|
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|
507 |
rootView := dragView device rootView. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
508 |
|
1a81d6be65b4
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Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
509 |
(p := lastScreenPosition) isNil ifTrue:[ |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
510 |
p := ip. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
511 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
512 |
" |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
513 |
get device coordinates |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
514 |
" |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
515 |
(t := dragView transformation) notNil ifTrue:[ |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
516 |
p := t applyTo:p. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
517 |
]. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
518 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
519 |
" |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
520 |
translate to screen |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
521 |
" |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
522 |
offs := dragView device |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
523 |
translatePoint:0@0 |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
524 |
from:(dragView id) to:(rootView id). |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
525 |
p := p + offs. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
526 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
527 |
lastScreenPosition := p. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
528 |
]. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
529 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
530 |
rootView clippedByChildren:false. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
531 |
rootView xoring:[ |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
532 |
rootView lineWidth:0. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
533 |
self callForDragActionAt:p in:rootView. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
534 |
rootView flush |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
535 |
]. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
536 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
537 |
"Created: 26.10.1996 / 15:15:26 / cg" |
1a81d6be65b4
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Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
538 |
"Modified: 19.4.1997 / 11:35:33 / cg" |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
539 |
! ! |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
540 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
541 |
!DragAndDropManager methodsFor:'dragging - generic - opaque'! |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
542 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
543 |
drawGenericAt:ip |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
544 |
"draw for a generic opaque drag" |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
545 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
546 |
|t offs p rootView szX szY| |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
547 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
548 |
rootView := dragView device rootView. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
549 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
550 |
p := ip. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
551 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
552 |
"/ |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
553 |
"/ get device coordinates |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
554 |
"/ |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
555 |
(t := dragView transformation) notNil ifTrue:[ |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
556 |
p := t applyTo:p. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
557 |
]. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
558 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
559 |
"/ |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
560 |
"/ translate to screen |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
561 |
"/ |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
562 |
offs := dragView device |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
563 |
translatePoint:0@0 |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
564 |
from:(dragView id) to:(rootView id). |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
565 |
p := p + offs. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
566 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
567 |
rootView clippedByChildren:false. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
568 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
569 |
"/ |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
570 |
"/ copy from screen to saveUnder |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
571 |
"/ |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
572 |
szX := dragSize x. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
573 |
szY := dragSize y. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
574 |
saveUnder isNil ifTrue:[ |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
575 |
saveUnder := Form |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
576 |
width:szX |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
577 |
height:szY |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
578 |
depth:rootView device depth |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
579 |
on:dragView device. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
580 |
saveUnder clippedByChildren:false. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
581 |
]. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
582 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
583 |
lastScreenPosition := p - dragOffset. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
584 |
saveUnder |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
585 |
copyFrom:rootView |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
586 |
x:lastScreenPosition x |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
587 |
y:lastScreenPosition y |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
588 |
toX:0 |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
589 |
y:0 |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
590 |
width:szX |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
591 |
height:szY. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
592 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
593 |
"/ |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
594 |
"/ draw using the dragAction block |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
595 |
"/ |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
596 |
rootView lineWidth:0. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
597 |
self callForDragActionAt:p in:rootView. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
598 |
rootView flush |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
599 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
600 |
"Modified: 19.4.1997 / 10:45:48 / cg" |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
601 |
! |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
602 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
603 |
restoreGenericAt:ip |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
604 |
"restore from saveUnder for a generic opaque drag" |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
605 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
606 |
|rootView| |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
607 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
608 |
rootView := dragView device rootView. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
609 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
610 |
"/ |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
611 |
"/ copy from saveUnder back to screen |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
612 |
"/ |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
613 |
rootView clippedByChildren:false. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
614 |
rootView |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
615 |
copyFrom:saveUnder |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
616 |
x:0 y:0 |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
617 |
toX:lastScreenPosition x y:lastScreenPosition y |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
618 |
width:dragSize x |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
619 |
height:dragSize y. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
620 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
621 |
"Modified: 19.4.1997 / 10:46:39 / cg" |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
622 |
! ! |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
623 |
|
342
7563cbf04502
added genericDrag & arrowDrag
Claus Gittinger <cg@exept.de>
parents:
341
diff
changeset
|
624 |
!DragAndDropManager methodsFor:'dragging - lines'! |
341 | 625 |
|
626 |
doLineDragX:x y:y |
|
548
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
627 |
"do a line drag - invert previous and draw at new position" |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
628 |
|
341 | 629 |
previousPoint notNil ifTrue:[ |
630 |
self invertLineFrom:initialPoint to:previousPoint |
|
631 |
]. |
|
632 |
previousPoint := x @ y. |
|
633 |
self invertLineFrom:initialPoint to:previousPoint |
|
634 |
||
548
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
635 |
"Modified: 19.4.1997 / 12:39:43 / cg" |
341 | 636 |
! |
637 |
||
638 |
endLineDragX:x y:y |
|
548
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
639 |
"end a line drag - invert previous, deinstall event catcher |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
640 |
and call for endDrag action" |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
641 |
|
341 | 642 |
previousPoint notNil ifTrue:[ |
643 |
self invertLineFrom:initialPoint to:previousPoint |
|
644 |
]. |
|
548
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added comments & docu, examples.
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diff
changeset
|
645 |
|
341 | 646 |
previousPoint := nil. |
548
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parents:
515
diff
changeset
|
647 |
dragView device sync. |
1a81d6be65b4
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Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
648 |
|
346
1612c23d9c5d
pass all dropInfo to an end-action
Claus Gittinger <cg@exept.de>
parents:
345
diff
changeset
|
649 |
self uncatchEvents. |
548
1a81d6be65b4
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parents:
515
diff
changeset
|
650 |
self endDragAt:x @ y. |
341 | 651 |
|
652 |
"Created: 26.10.1996 / 15:17:20 / cg" |
|
548
1a81d6be65b4
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parents:
515
diff
changeset
|
653 |
"Modified: 19.4.1997 / 12:40:14 / cg" |
341 | 654 |
! |
655 |
||
656 |
invertLineFrom:ip1 to:ip2 |
|
548
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
657 |
"invert for a line drag" |
1a81d6be65b4
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parents:
515
diff
changeset
|
658 |
|
342
7563cbf04502
added genericDrag & arrowDrag
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parents:
341
diff
changeset
|
659 |
|t offs p1 p2 rootView a| |
341 | 660 |
|
661 |
rootView := dragView device rootView. |
|
662 |
||
663 |
p1 := ip1. |
|
664 |
p2 := ip2. |
|
665 |
||
666 |
" |
|
667 |
get device coordinates |
|
668 |
" |
|
669 |
(t := dragView transformation) notNil ifTrue:[ |
|
670 |
p1 := t applyTo:p1. |
|
671 |
p2 := t applyTo:p2. |
|
672 |
]. |
|
673 |
||
674 |
" |
|
675 |
translate to screen |
|
676 |
" |
|
677 |
offs := dragView device |
|
678 |
translatePoint:0@0 |
|
679 |
from:(dragView id) to:(rootView id). |
|
680 |
p1 := p1 + offs. |
|
681 |
p2 := p2 + offs. |
|
682 |
||
683 |
rootView clippedByChildren:false. |
|
684 |
rootView xoring:[ |
|
685 |
rootView lineWidth:0. |
|
342
7563cbf04502
added genericDrag & arrowDrag
Claus Gittinger <cg@exept.de>
parents:
341
diff
changeset
|
686 |
lineMode == #arrow ifTrue:[ |
7563cbf04502
added genericDrag & arrowDrag
Claus Gittinger <cg@exept.de>
parents:
341
diff
changeset
|
687 |
a := Arrow from:p1 to:p2. |
7563cbf04502
added genericDrag & arrowDrag
Claus Gittinger <cg@exept.de>
parents:
341
diff
changeset
|
688 |
a arrowHeadLength:(rootView device horizontalPixelPerMillimeter * 4) rounded. |
7563cbf04502
added genericDrag & arrowDrag
Claus Gittinger <cg@exept.de>
parents:
341
diff
changeset
|
689 |
a displayFilledOn:rootView. |
7563cbf04502
added genericDrag & arrowDrag
Claus Gittinger <cg@exept.de>
parents:
341
diff
changeset
|
690 |
] ifFalse:[ |
7563cbf04502
added genericDrag & arrowDrag
Claus Gittinger <cg@exept.de>
parents:
341
diff
changeset
|
691 |
rootView displayLineFrom:p1 to:p2. |
7563cbf04502
added genericDrag & arrowDrag
Claus Gittinger <cg@exept.de>
parents:
341
diff
changeset
|
692 |
]. |
341 | 693 |
rootView flush |
694 |
]. |
|
695 |
||
696 |
"Created: 26.10.1996 / 15:15:26 / cg" |
|
548
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
697 |
"Modified: 19.4.1997 / 12:40:29 / cg" |
342
7563cbf04502
added genericDrag & arrowDrag
Claus Gittinger <cg@exept.de>
parents:
341
diff
changeset
|
698 |
! |
341 | 699 |
|
345 | 700 |
startArrowDragIn:aView at:p atEnd:aBlock |
348 | 701 |
"start a line-drag of an arrow-line. |
702 |
The drag starts in aView at point p. |
|
703 |
When finished, the endAction is called with four args: |
|
704 |
the targetView, the targetViews windowID (useful, if its an alien view), |
|
705 |
the dropPoint in root-coordinates and the dropPoint within the targetView" |
|
706 |
||
342
7563cbf04502
added genericDrag & arrowDrag
Claus Gittinger <cg@exept.de>
parents:
341
diff
changeset
|
707 |
self catchEventsFrom:aView. |
7563cbf04502
added genericDrag & arrowDrag
Claus Gittinger <cg@exept.de>
parents:
341
diff
changeset
|
708 |
motionAction := #doLineDragX:y:. |
7563cbf04502
added genericDrag & arrowDrag
Claus Gittinger <cg@exept.de>
parents:
341
diff
changeset
|
709 |
releaseAction := #endLineDragX:y:. |
7563cbf04502
added genericDrag & arrowDrag
Claus Gittinger <cg@exept.de>
parents:
341
diff
changeset
|
710 |
initialPoint := p. |
7563cbf04502
added genericDrag & arrowDrag
Claus Gittinger <cg@exept.de>
parents:
341
diff
changeset
|
711 |
previousPoint := nil. |
7563cbf04502
added genericDrag & arrowDrag
Claus Gittinger <cg@exept.de>
parents:
341
diff
changeset
|
712 |
dragBlock := nil. |
7563cbf04502
added genericDrag & arrowDrag
Claus Gittinger <cg@exept.de>
parents:
341
diff
changeset
|
713 |
lineMode := #arrow. |
345 | 714 |
dropAction := aBlock. |
342
7563cbf04502
added genericDrag & arrowDrag
Claus Gittinger <cg@exept.de>
parents:
341
diff
changeset
|
715 |
|
7563cbf04502
added genericDrag & arrowDrag
Claus Gittinger <cg@exept.de>
parents:
341
diff
changeset
|
716 |
"Modified: 26.10.1996 / 15:09:26 / cg" |
7563cbf04502
added genericDrag & arrowDrag
Claus Gittinger <cg@exept.de>
parents:
341
diff
changeset
|
717 |
"Created: 26.10.1996 / 15:16:13 / cg" |
394 | 718 |
|
342
7563cbf04502
added genericDrag & arrowDrag
Claus Gittinger <cg@exept.de>
parents:
341
diff
changeset
|
719 |
! |
341 | 720 |
|
348 | 721 |
startLineDragIn:aView at:p atEnd:aFourArgEndBlock |
722 |
"start a line-drag of a normal line. |
|
723 |
The drag starts in aView at point p. |
|
724 |
When finished, the endAction is called with four args: |
|
725 |
the targetView, the targetViews windowID (useful, if its an alien view), |
|
726 |
the dropPoint in root-coordinates and the dropPoint within the targetView" |
|
727 |
||
341 | 728 |
self catchEventsFrom:aView. |
729 |
motionAction := #doLineDragX:y:. |
|
730 |
releaseAction := #endLineDragX:y:. |
|
731 |
initialPoint := p. |
|
342
7563cbf04502
added genericDrag & arrowDrag
Claus Gittinger <cg@exept.de>
parents:
341
diff
changeset
|
732 |
previousPoint := nil. |
7563cbf04502
added genericDrag & arrowDrag
Claus Gittinger <cg@exept.de>
parents:
341
diff
changeset
|
733 |
dragBlock := nil. |
7563cbf04502
added genericDrag & arrowDrag
Claus Gittinger <cg@exept.de>
parents:
341
diff
changeset
|
734 |
lineMode := nil. |
348 | 735 |
dropAction := aFourArgEndBlock. |
341 | 736 |
|
737 |
"Modified: 26.10.1996 / 15:09:26 / cg" |
|
738 |
"Created: 26.10.1996 / 15:16:13 / cg" |
|
394 | 739 |
|
341 | 740 |
! ! |
741 |
||
397 | 742 |
!DragAndDropManager methodsFor:'drawing'! |
743 |
||
744 |
showDragging:items in:aView at:p |
|
548
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
745 |
"helper for dragging dragObjects: draw them all" |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
746 |
|
397 | 747 |
|offs| |
748 |
||
548
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
749 |
offs := 0. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
750 |
items do:[:item | |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
751 |
item displayOn:aView at:p + (0@offs). |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
752 |
offs := offs + (item heightOn:self) |
397 | 753 |
] |
754 |
||
548
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
755 |
"Modified: 19.4.1997 / 12:41:24 / cg" |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
756 |
! ! |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
757 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
758 |
!DragAndDropManager methodsFor:'dropping'! |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
759 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
760 |
drop:something in:targetView at:aPoint from:sourceView ifOk:okAction ifFail:failAction |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
761 |
"try to drop some object in a targetView; |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
762 |
if any view along the targetViews superView chain takes it, |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
763 |
the okAction is evaluated; if not, failAction is evaluated. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
764 |
This may be sent from a drag initiators endDrag block." |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
765 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
766 |
|v pnt| |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
767 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
768 |
v := targetView. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
769 |
pnt := aPoint. |
397 | 770 |
|
548
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
771 |
[v notNil] whileTrue:[ |
628 | 772 |
(self askIfCanDrop:something in:v) ifTrue:[ |
548
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
773 |
v |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
774 |
drop:something |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
775 |
at:aPoint |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
776 |
from:sourceView |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
777 |
with:[:o | okAction. ^ true] |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
778 |
ifFail:[:o | failAction. ^ false]. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
779 |
]. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
780 |
v := v superView. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
781 |
pnt := nil |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
782 |
]. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
783 |
failAction value. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
784 |
^ false |
397 | 785 |
|
548
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
786 |
"Modified: 19.4.1997 / 12:42:36 / cg" |
397 | 787 |
! ! |
788 |
||
789 |
!DragAndDropManager methodsFor:'easy drag & drop'! |
|
790 |
||
791 |
startDrag:anObjectOrCollection from:aView offset:offset |
|
792 |
"start a drop at the current pointer position" |
|
793 |
||
794 |
|pos displayObjects device width height| |
|
795 |
||
796 |
self dropObjects:anObjectOrCollection. |
|
797 |
||
798 |
device := aView device. |
|
799 |
pos := device translatePoint:(device pointerPosition) |
|
800 |
from:(device rootView id) |
|
801 |
to:(aView id). |
|
802 |
||
803 |
displayObjects := dropObjects collect:[:each | each displayObject on:device]. |
|
804 |
height := displayObjects inject:0 into:[:sum :each | sum + (each heightOn:aView)]. |
|
805 |
width := displayObjects inject:0 into:[:max :each | max max:(each widthOn:aView)]. |
|
806 |
||
807 |
self startOpaqueDrag:[:aPoint :aView|self showDragging:displayObjects in:aView at:(aPoint - offset)] |
|
808 |
offset:offset |
|
809 |
extent:(width @ height) |
|
810 |
in:aView |
|
811 |
at:pos |
|
812 |
atEnd:nil. |
|
813 |
! ! |
|
814 |
||
341 | 815 |
!DragAndDropManager methodsFor:'event catching'! |
816 |
||
817 |
buttonMotion:button x:x y:y view:aView |
|
818 |
self perform:motionAction with:x with:y |
|
819 |
||
820 |
"Created: 26.10.1996 / 15:09:00 / cg" |
|
394 | 821 |
|
822 |
||
341 | 823 |
! |
824 |
||
825 |
buttonRelease:button x:x y:y view:aView |
|
548
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
826 |
self perform:releaseAction with:x with:y. |
394 | 827 |
|
548
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
828 |
"Modified: 19.4.1997 / 12:37:02 / cg" |
341 | 829 |
! |
830 |
||
831 |
handlesButtonMotion:button inView:aView |
|
832 |
"query from event processor: am I interested in button-events ? |
|
833 |
yes I am (to activate the clicked-on field)." |
|
834 |
||
835 |
^ aView == dragView |
|
836 |
||
837 |
"Created: 26.10.1996 / 15:05:36 / cg" |
|
394 | 838 |
|
341 | 839 |
! |
840 |
||
841 |
handlesButtonRelease:button inView:aView |
|
842 |
"query from event processor: am I interested in button-events ? |
|
843 |
yes I am (to activate the clicked-on field)." |
|
844 |
||
845 |
^ aView == dragView |
|
846 |
||
847 |
"Created: 26.10.1996 / 15:05:48 / cg" |
|
394 | 848 |
|
341 | 849 |
! ! |
850 |
||
851 |
!DragAndDropManager methodsFor:'private'! |
|
852 |
||
628 | 853 |
askIfCanDrop:dropObjects in:aView |
854 |
|canDrop| |
|
855 |
||
856 |
DragOriginatorQuerySignal answer:dragView do:[ |
|
680
6157661790fd
keep dragOffset - provide querySignal
Claus Gittinger <cg@exept.de>
parents:
628
diff
changeset
|
857 |
DragOffsetQuerySignal answer:dragOffset do:[ |
6157661790fd
keep dragOffset - provide querySignal
Claus Gittinger <cg@exept.de>
parents:
628
diff
changeset
|
858 |
canDrop := aView canDrop:dropObjects |
6157661790fd
keep dragOffset - provide querySignal
Claus Gittinger <cg@exept.de>
parents:
628
diff
changeset
|
859 |
]. |
628 | 860 |
]. |
861 |
^ canDrop |
|
680
6157661790fd
keep dragOffset - provide querySignal
Claus Gittinger <cg@exept.de>
parents:
628
diff
changeset
|
862 |
|
6157661790fd
keep dragOffset - provide querySignal
Claus Gittinger <cg@exept.de>
parents:
628
diff
changeset
|
863 |
"Modified: 11.8.1997 / 00:55:10 / cg" |
628 | 864 |
! |
865 |
||
548
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
866 |
callForDragActionAt:aPoint in:aView |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
867 |
"evaluate the user supplied dragAction. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
868 |
Look how many args it expects and invoke with |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
869 |
position |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
870 |
dragView |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
871 |
dragObjects" |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
872 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
873 |
|numArgs| |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
874 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
875 |
(numArgs := dragBlock numArgs) == 1 ifTrue:[ |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
876 |
dragBlock value:aPoint |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
877 |
] ifFalse:[ |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
878 |
numArgs == 2 ifTrue:[ |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
879 |
dragBlock value:aPoint value:aView |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
880 |
] ifFalse:[ |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
881 |
dragBlock value:aPoint value:aView value:dropObjects. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
882 |
] |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
883 |
] |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
884 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
885 |
"Created: 19.4.1997 / 10:05:55 / cg" |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
886 |
! |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
887 |
|
341 | 888 |
catchEventsFrom:aView |
394 | 889 |
dragView := aView. |
890 |
saveCursor := dragView cursor. |
|
891 |
||
341 | 892 |
rememberedDelegate := aView delegate. |
394 | 893 |
aView delegate:self. |
548
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
894 |
aView device grabPointerInView:aView. |
341 | 895 |
|
548
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
896 |
"Modified: 19.4.1997 / 12:36:04 / cg" |
394 | 897 |
! |
898 |
||
899 |
destinationViewAt:ip |
|
900 |
|rootPoint t viewId offs destinationId lastViewId destinationView |
|
901 |
rootView destinationPoint device| |
|
902 |
||
903 |
device := dragView device. |
|
904 |
rootView := device rootView. |
|
905 |
rootPoint := ip. |
|
906 |
||
907 |
" |
|
908 |
get device coordinates |
|
909 |
" |
|
910 |
(t := dragView transformation) notNil ifTrue:[ |
|
911 |
rootPoint := t applyTo:ip. |
|
912 |
]. |
|
913 |
viewId := rootView id. |
|
914 |
||
915 |
" |
|
916 |
translate to screen |
|
917 |
" |
|
918 |
offs := device translatePoint:0@0 from:(dragView id) to:viewId. |
|
919 |
rootPoint := rootPoint + offs. |
|
920 |
||
921 |
"search view the drop is in" |
|
922 |
||
923 |
[viewId notNil] whileTrue:[ |
|
924 |
destinationId := device viewIdFromPoint:rootPoint in:viewId. |
|
925 |
lastViewId := viewId. |
|
926 |
viewId := destinationId |
|
927 |
]. |
|
928 |
^ device viewFromId:lastViewId |
|
341 | 929 |
! |
930 |
||
346
1612c23d9c5d
pass all dropInfo to an end-action
Claus Gittinger <cg@exept.de>
parents:
345
diff
changeset
|
931 |
endDragAt:ip |
548
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
932 |
|rootPoint t rootId viewId offs destinationId lastViewId destinationView |
346
1612c23d9c5d
pass all dropInfo to an end-action
Claus Gittinger <cg@exept.de>
parents:
345
diff
changeset
|
933 |
rootView destinationPoint device| |
1612c23d9c5d
pass all dropInfo to an end-action
Claus Gittinger <cg@exept.de>
parents:
345
diff
changeset
|
934 |
|
394 | 935 |
dragView cursor:saveCursor now:true. |
936 |
device := dragView device. |
|
548
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
937 |
device ungrabPointer. |
394 | 938 |
rootView := device rootView. |
939 |
rootPoint := ip. |
|
346
1612c23d9c5d
pass all dropInfo to an end-action
Claus Gittinger <cg@exept.de>
parents:
345
diff
changeset
|
940 |
|
394 | 941 |
" |
942 |
get device coordinates |
|
943 |
" |
|
944 |
(t := dragView transformation) notNil ifTrue:[ |
|
945 |
rootPoint := t applyTo:ip. |
|
946 |
]. |
|
548
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
947 |
viewId := rootId := rootView id. |
346
1612c23d9c5d
pass all dropInfo to an end-action
Claus Gittinger <cg@exept.de>
parents:
345
diff
changeset
|
948 |
|
394 | 949 |
" |
950 |
translate to screen |
|
951 |
" |
|
548
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
952 |
offs := device translatePoint:0@0 from:(dragView id) to:rootId. |
394 | 953 |
rootPoint := rootPoint + offs. |
954 |
||
955 |
"search view the drop is in" |
|
346
1612c23d9c5d
pass all dropInfo to an end-action
Claus Gittinger <cg@exept.de>
parents:
345
diff
changeset
|
956 |
|
394 | 957 |
[viewId notNil] whileTrue:[ |
958 |
destinationId := device viewIdFromPoint:rootPoint in:viewId. |
|
959 |
lastViewId := viewId. |
|
960 |
viewId := destinationId |
|
961 |
]. |
|
962 |
destinationView := device viewFromId:lastViewId. |
|
963 |
destinationId := lastViewId. |
|
346
1612c23d9c5d
pass all dropInfo to an end-action
Claus Gittinger <cg@exept.de>
parents:
345
diff
changeset
|
964 |
|
548
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
965 |
"/ |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
966 |
"/ translate to destination view |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
967 |
"/ |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
968 |
destinationPoint := device translatePoint:rootPoint from:rootId to:destinationId. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
969 |
|
609
1343bda17876
pass logical coordinates to dropAction.
Claus Gittinger <cg@exept.de>
parents:
549
diff
changeset
|
970 |
"/ |
1343bda17876
pass logical coordinates to dropAction.
Claus Gittinger <cg@exept.de>
parents:
549
diff
changeset
|
971 |
"/ if the destinationView has a transformation, |
1343bda17876
pass logical coordinates to dropAction.
Claus Gittinger <cg@exept.de>
parents:
549
diff
changeset
|
972 |
"/ also translate to logical coordinates .. |
1343bda17876
pass logical coordinates to dropAction.
Claus Gittinger <cg@exept.de>
parents:
549
diff
changeset
|
973 |
"/ |
1343bda17876
pass logical coordinates to dropAction.
Claus Gittinger <cg@exept.de>
parents:
549
diff
changeset
|
974 |
destinationView notNil ifTrue:[ |
1343bda17876
pass logical coordinates to dropAction.
Claus Gittinger <cg@exept.de>
parents:
549
diff
changeset
|
975 |
(t := destinationView transformation) notNil ifTrue:[ |
1343bda17876
pass logical coordinates to dropAction.
Claus Gittinger <cg@exept.de>
parents:
549
diff
changeset
|
976 |
destinationPoint := t applyInverseTo:destinationPoint |
1343bda17876
pass logical coordinates to dropAction.
Claus Gittinger <cg@exept.de>
parents:
549
diff
changeset
|
977 |
] |
1343bda17876
pass logical coordinates to dropAction.
Claus Gittinger <cg@exept.de>
parents:
549
diff
changeset
|
978 |
]. |
1343bda17876
pass logical coordinates to dropAction.
Claus Gittinger <cg@exept.de>
parents:
549
diff
changeset
|
979 |
|
1343bda17876
pass logical coordinates to dropAction.
Claus Gittinger <cg@exept.de>
parents:
549
diff
changeset
|
980 |
"/ |
1343bda17876
pass logical coordinates to dropAction.
Claus Gittinger <cg@exept.de>
parents:
549
diff
changeset
|
981 |
"/ if this dragOperation has an explicit dropAction, |
1343bda17876
pass logical coordinates to dropAction.
Claus Gittinger <cg@exept.de>
parents:
549
diff
changeset
|
982 |
"/ perform it. |
1343bda17876
pass logical coordinates to dropAction.
Claus Gittinger <cg@exept.de>
parents:
549
diff
changeset
|
983 |
"/ |
513 | 984 |
dropAction notNil ifTrue:[ |
985 |
"/ initiator wants to do it himself, manually. |
|
986 |
||
987 |
dropAction value:destinationView |
|
988 |
value:destinationId |
|
989 |
value:rootPoint |
|
990 |
value:destinationPoint. |
|
991 |
^ self |
|
992 |
]. |
|
993 |
||
994 |
"/ default drop behavior: |
|
995 |
"/ if its one of my own views, ask if dropping is ok. |
|
996 |
"/ if not, ask the device to drop it. |
|
997 |
||
394 | 998 |
destinationView notNil ifTrue:[ |
513 | 999 |
"/ |
1000 |
"/ one of my views |
|
1001 |
"/ |
|
1002 |
||
628 | 1003 |
DragOriginatorQuerySignal answer:dragView do:[ |
680
6157661790fd
keep dragOffset - provide querySignal
Claus Gittinger <cg@exept.de>
parents:
628
diff
changeset
|
1004 |
DragOffsetQuerySignal answer:dragOffset do:[ |
6157661790fd
keep dragOffset - provide querySignal
Claus Gittinger <cg@exept.de>
parents:
628
diff
changeset
|
1005 |
"/ |
6157661790fd
keep dragOffset - provide querySignal
Claus Gittinger <cg@exept.de>
parents:
628
diff
changeset
|
1006 |
"/ see if the view itself can drop that stuff ... |
6157661790fd
keep dragOffset - provide querySignal
Claus Gittinger <cg@exept.de>
parents:
628
diff
changeset
|
1007 |
"/ |
628 | 1008 |
(destinationView canDrop:dropObjects) ifTrue:[ |
680
6157661790fd
keep dragOffset - provide querySignal
Claus Gittinger <cg@exept.de>
parents:
628
diff
changeset
|
1009 |
destinationView drop:dropObjects at:destinationPoint. |
628 | 1010 |
^ self. |
1011 |
]. |
|
680
6157661790fd
keep dragOffset - provide querySignal
Claus Gittinger <cg@exept.de>
parents:
628
diff
changeset
|
1012 |
|
6157661790fd
keep dragOffset - provide querySignal
Claus Gittinger <cg@exept.de>
parents:
628
diff
changeset
|
1013 |
"/ |
6157661790fd
keep dragOffset - provide querySignal
Claus Gittinger <cg@exept.de>
parents:
628
diff
changeset
|
1014 |
"/ try superViews along the chain ... |
6157661790fd
keep dragOffset - provide querySignal
Claus Gittinger <cg@exept.de>
parents:
628
diff
changeset
|
1015 |
"/ |
628 | 1016 |
destinationView := destinationView superView. |
680
6157661790fd
keep dragOffset - provide querySignal
Claus Gittinger <cg@exept.de>
parents:
628
diff
changeset
|
1017 |
[destinationView notNil] whileTrue:[ |
6157661790fd
keep dragOffset - provide querySignal
Claus Gittinger <cg@exept.de>
parents:
628
diff
changeset
|
1018 |
(destinationView canDrop:dropObjects) ifTrue:[ |
6157661790fd
keep dragOffset - provide querySignal
Claus Gittinger <cg@exept.de>
parents:
628
diff
changeset
|
1019 |
destinationView drop:dropObjects at:nil. |
6157661790fd
keep dragOffset - provide querySignal
Claus Gittinger <cg@exept.de>
parents:
628
diff
changeset
|
1020 |
^ self. |
6157661790fd
keep dragOffset - provide querySignal
Claus Gittinger <cg@exept.de>
parents:
628
diff
changeset
|
1021 |
]. |
6157661790fd
keep dragOffset - provide querySignal
Claus Gittinger <cg@exept.de>
parents:
628
diff
changeset
|
1022 |
destinationView := destinationView superView. |
6157661790fd
keep dragOffset - provide querySignal
Claus Gittinger <cg@exept.de>
parents:
628
diff
changeset
|
1023 |
]. |
628 | 1024 |
]. |
346
1612c23d9c5d
pass all dropInfo to an end-action
Claus Gittinger <cg@exept.de>
parents:
345
diff
changeset
|
1025 |
]. |
394 | 1026 |
^ self |
1027 |
]. |
|
346
1612c23d9c5d
pass all dropInfo to an end-action
Claus Gittinger <cg@exept.de>
parents:
345
diff
changeset
|
1028 |
|
513 | 1029 |
"/ |
1030 |
"/ not one of my views |
|
1031 |
"/ |
|
1032 |
||
609
1343bda17876
pass logical coordinates to dropAction.
Claus Gittinger <cg@exept.de>
parents:
549
diff
changeset
|
1033 |
"/ external clipboard mechanism via display |
513 | 1034 |
device |
1035 |
drop:dropObjects |
|
1036 |
inWindowID:destinationId |
|
1037 |
position:destinationPoint |
|
1038 |
rootPosition:rootPoint |
|
1039 |
||
680
6157661790fd
keep dragOffset - provide querySignal
Claus Gittinger <cg@exept.de>
parents:
628
diff
changeset
|
1040 |
"Modified: 11.8.1997 / 00:55:41 / cg" |
346
1612c23d9c5d
pass all dropInfo to an end-action
Claus Gittinger <cg@exept.de>
parents:
345
diff
changeset
|
1041 |
! |
1612c23d9c5d
pass all dropInfo to an end-action
Claus Gittinger <cg@exept.de>
parents:
345
diff
changeset
|
1042 |
|
341 | 1043 |
uncatchEvents |
1044 |
dragView delegate:rememberedDelegate. |
|
1045 |
||
1046 |
"Created: 26.10.1996 / 15:22:29 / cg" |
|
394 | 1047 |
|
411 | 1048 |
" |
1049 |
DragAndDropManager allInstancesDo:[:m | |
|
1050 |
m uncatchEvents |
|
1051 |
] |
|
1052 |
" |
|
341 | 1053 |
! ! |
1054 |
||
628 | 1055 |
!DragAndDropManager::DemoView class methodsFor:'documentation'! |
1056 |
||
1057 |
documentation |
|
1058 |
" |
|
1059 |
demonstrates rubber-line dragging. |
|
1060 |
||
1061 |
See the buttonPress method, where a drag is initiated. |
|
1062 |
At endDrop, look at the transcript. |
|
1063 |
||
1064 |
[author:] |
|
1065 |
Claus Gittinger |
|
1066 |
||
1067 |
[start with:] |
|
1068 |
DemoView new open |
|
1069 |
" |
|
1070 |
! ! |
|
1071 |
||
1072 |
!DragAndDropManager::DemoView methodsFor:'events'! |
|
1073 |
||
1074 |
buttonPress:button x:x y:y |
|
1075 |
DragAndDropManager new |
|
1076 |
startLineDragIn:self at:(x@y) |
|
1077 |
atEnd:[:view |
|
1078 |
:viewID |
|
1079 |
:rootPoint |
|
1080 |
:viewPoint | |
|
1081 |
||
1082 |
Transcript show:'dropped at '; |
|
1083 |
show:viewPoint; |
|
1084 |
show:' (screen: '; |
|
1085 |
show:rootPoint; |
|
1086 |
show:') in '. |
|
1087 |
view notNil ifTrue:[ |
|
1088 |
Transcript showCR:view |
|
1089 |
] ifFalse:[ |
|
1090 |
Transcript show:'alien view '; |
|
1091 |
showCR:viewID address |
|
1092 |
] |
|
1093 |
]. |
|
1094 |
||
1095 |
" |
|
1096 |
self new open |
|
1097 |
" |
|
1098 |
||
1099 |
"Modified: 19.4.1997 / 11:40:46 / cg" |
|
1100 |
! ! |
|
1101 |
||
609
1343bda17876
pass logical coordinates to dropAction.
Claus Gittinger <cg@exept.de>
parents:
549
diff
changeset
|
1102 |
!DragAndDropManager::DemoView2 class methodsFor:'documentation'! |
548
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1103 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1104 |
documentation |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1105 |
" |
609
1343bda17876
pass logical coordinates to dropAction.
Claus Gittinger <cg@exept.de>
parents:
549
diff
changeset
|
1106 |
demonstrates string dragging. |
548
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1107 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1108 |
See the buttonPress method, where a drag is initiated. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1109 |
At endDrop, look at the transcript. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1110 |
|
609
1343bda17876
pass logical coordinates to dropAction.
Claus Gittinger <cg@exept.de>
parents:
549
diff
changeset
|
1111 |
|
548
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1112 |
[author:] |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1113 |
Claus Gittinger |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1114 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1115 |
[start with:] |
609
1343bda17876
pass logical coordinates to dropAction.
Claus Gittinger <cg@exept.de>
parents:
549
diff
changeset
|
1116 |
DemoView2 new open |
548
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1117 |
" |
609
1343bda17876
pass logical coordinates to dropAction.
Claus Gittinger <cg@exept.de>
parents:
549
diff
changeset
|
1118 |
|
1343bda17876
pass logical coordinates to dropAction.
Claus Gittinger <cg@exept.de>
parents:
549
diff
changeset
|
1119 |
|
548
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1120 |
! ! |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1121 |
|
609
1343bda17876
pass logical coordinates to dropAction.
Claus Gittinger <cg@exept.de>
parents:
549
diff
changeset
|
1122 |
!DragAndDropManager::DemoView2 methodsFor:'events'! |
548
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1123 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1124 |
buttonPress:button x:x y:y |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1125 |
DragAndDropManager new |
609
1343bda17876
pass logical coordinates to dropAction.
Claus Gittinger <cg@exept.de>
parents:
549
diff
changeset
|
1126 |
startGenericDrag:[:p :v | v displayString:'hello' at:p] |
1343bda17876
pass logical coordinates to dropAction.
Claus Gittinger <cg@exept.de>
parents:
549
diff
changeset
|
1127 |
in:self |
1343bda17876
pass logical coordinates to dropAction.
Claus Gittinger <cg@exept.de>
parents:
549
diff
changeset
|
1128 |
at:(x@y) |
548
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1129 |
atEnd:[:view |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1130 |
:viewID |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1131 |
:rootPoint |
609
1343bda17876
pass logical coordinates to dropAction.
Claus Gittinger <cg@exept.de>
parents:
549
diff
changeset
|
1132 |
:viewPoint | ] |
548
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1133 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1134 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1135 |
" |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1136 |
self new open |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1137 |
" |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1138 |
|
609
1343bda17876
pass logical coordinates to dropAction.
Claus Gittinger <cg@exept.de>
parents:
549
diff
changeset
|
1139 |
|
548
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1140 |
! ! |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1141 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1142 |
!DragAndDropManager::DemoView3 class methodsFor:'documentation'! |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1143 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1144 |
documentation |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1145 |
" |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1146 |
demonstrates arrow-line dragging. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1147 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1148 |
See the buttonPress method, where a drag is initiated. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1149 |
At endDrop, look at the transcript. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1150 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1151 |
[author:] |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1152 |
Claus Gittinger |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1153 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1154 |
[start with:] |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1155 |
DemoView3 new open |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1156 |
" |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1157 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1158 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1159 |
! ! |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1160 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1161 |
!DragAndDropManager::DemoView3 methodsFor:'events'! |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1162 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1163 |
buttonPress:button x:x y:y |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1164 |
DragAndDropManager new |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1165 |
startArrowDragIn:self |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1166 |
at:(x@y) |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1167 |
atEnd:[:view |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1168 |
:viewID |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1169 |
:rootPoint |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1170 |
:viewPoint | |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1171 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1172 |
Transcript show:'dropped at '; |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1173 |
show:viewPoint; |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1174 |
show:' (screen: '; |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1175 |
show:rootPoint; |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1176 |
show:') in '. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1177 |
view notNil ifTrue:[ |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1178 |
Transcript showCR:view |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1179 |
] ifFalse:[ |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1180 |
Transcript show:'alien view '; |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1181 |
showCR:viewID address |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1182 |
] |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1183 |
]. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1184 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1185 |
" |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1186 |
self new open |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1187 |
" |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1188 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1189 |
"Modified: 19.4.1997 / 12:45:29 / cg" |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1190 |
! ! |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1191 |
|
341 | 1192 |
!DragAndDropManager class methodsFor:'documentation'! |
1193 |
||
1194 |
version |
|
680
6157661790fd
keep dragOffset - provide querySignal
Claus Gittinger <cg@exept.de>
parents:
628
diff
changeset
|
1195 |
^ '$Header: /cvs/stx/stx/libview2/DragAndDropManager.st,v 1.17 1997-08-11 12:03:50 cg Exp $' |
341 | 1196 |
! ! |
628 | 1197 |
DragAndDropManager initialize! |