author | Claus Gittinger <cg@exept.de> |
Sat, 19 Apr 1997 17:22:38 +0200 | |
changeset 548 | 1a81d6be65b4 |
parent 515 | 7df33af3beaa |
child 549 | 51c6f1d918c2 |
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:'' |
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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:#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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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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! |
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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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" |
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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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[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 |
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160 |
! |
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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, |
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to open a fileBrowser on that file ... |
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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| |
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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:('.'). |
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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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" |
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221 |
|
341 | 222 |
! ! |
223 |
||
397 | 224 |
!DragAndDropManager class methodsFor:'simple start'! |
225 |
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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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|
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^ self new |
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startArrowDragIn:aView at:dragPoint atEnd:aFourArgBlock |
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|
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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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242 |
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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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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254 |
]. |
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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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261 |
|
397 | 262 |
startDrag:anObjectOrCollection from:aView |
263 |
"start a drop at the current pointer position" |
|
264 |
||
265 |
(self new) startDrag:anObjectOrCollection from:aView offset:0@0 |
|
266 |
||
267 |
" |
|
268 |
|o v| |
|
269 |
||
270 |
v := (Button label:'press me'). |
|
271 |
v pressAction:[ |
|
272 |
|o| |
|
273 |
o := DropObject newFile:('.'). |
|
274 |
DragAndDropManager startDrag:o from:v. |
|
275 |
v turnOff |
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276 |
]. |
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277 |
v openAt:100@100 |
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278 |
" |
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279 |
||
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"Modified: 19.4.1997 / 11:42:40 / cg" |
397 | 281 |
! |
282 |
||
283 |
startDrag:anObjectOrCollection from:aView offset:offset |
|
284 |
"start a drop at the current pointer position" |
|
285 |
||
286 |
(self new) startDrag:anObjectOrCollection from:aView offset:offset |
|
287 |
||
288 |
" |
|
289 |
|o v| |
|
290 |
||
291 |
v := (Button label:'press me'). |
|
292 |
v pressAction:[ |
|
293 |
|o| |
|
294 |
o := DropObject newFile:('.'). |
|
295 |
DragAndDropManager startDrag:o from:v offset:10@10. |
|
296 |
v turnOff |
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297 |
]. |
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298 |
v openAt:100@100 |
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299 |
" |
|
300 |
||
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"Modified: 19.4.1997 / 11:42:45 / cg" |
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! |
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303 |
|
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startLineDragIn:aView at:dragPoint atEnd:aFourArgBlock |
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305 |
"start a rubber-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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308 |
|
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309 |
^ self new |
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310 |
startLineDragIn:aView at:dragPoint atEnd:aFourArgBlock |
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311 |
|
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" |
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313 |
|o v| |
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314 |
|
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315 |
v := (Button label:'press me'). |
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316 |
v pressAction:[ |
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317 |
|o| |
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318 |
o := DropObject newFile:('.'). |
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319 |
v turnOff; repairDamage. |
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320 |
DragAndDropManager |
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321 |
startLineDragIn:v |
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322 |
at:0@0 |
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323 |
atEnd:[:v :vID :sPos :vPos | |
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324 |
v isNil ifTrue:[ |
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325 |
Transcript show:'alien view' |
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326 |
] ifFalse:[ |
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327 |
Transcript show:'view: '; |
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328 |
show:v |
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329 |
]. |
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330 |
Transcript show:' screen: '; show:sPos; |
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331 |
show:' inView: '; showCR:vPos. |
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332 |
]. |
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333 |
]. |
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334 |
v openAt:100@100 |
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335 |
" |
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336 |
|
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337 |
"Modified: 19.4.1997 / 12:02:02 / cg" |
397 | 338 |
! ! |
339 |
||
394 | 340 |
!DragAndDropManager methodsFor:'accessing'! |
341 |
||
397 | 342 |
dropObjects |
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343 |
"return the current dropObject collection" |
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344 |
|
397 | 345 |
^ dropObjects |
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346 |
|
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"Modified: 19.4.1997 / 10:19:06 / cg" |
397 | 348 |
! |
349 |
||
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350 |
dropObjects:aCollectionOfDropObjects |
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351 |
"set the current dropObject collection" |
397 | 352 |
|
548
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353 |
aCollectionOfDropObjects isCollection ifTrue:[ |
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354 |
dropObjects := aCollectionOfDropObjects |
397 | 355 |
] ifFalse:[ |
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356 |
dropObjects := Array with:aCollectionOfDropObjects |
397 | 357 |
]. |
548
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358 |
|
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359 |
"Modified: 19.4.1997 / 10:19:33 / cg" |
394 | 360 |
! ! |
361 |
||
342
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362 |
!DragAndDropManager methodsFor:'dragging - generic'! |
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363 |
|
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364 |
doGenericDragX:x y:y |
515 | 365 |
"drag to x/y; see if the target view allows a drop |
366 |
and change the mouse pointer as appropriate" |
|
367 |
||
368 |
|view newCursor| |
|
394 | 369 |
|
342
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370 |
previousPoint notNil ifTrue:[ |
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371 |
(opaque and:[dragSize notNil]) ifTrue:[ |
394 | 372 |
self restoreGenericAt:previousPoint |
373 |
] ifFalse:[ |
|
374 |
self invertGenericAt:previousPoint |
|
375 |
] |
|
342
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376 |
]. |
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377 |
previousPoint := x @ y. |
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378 |
lastScreenPosition := nil. |
394 | 379 |
|
380 |
view := self destinationViewAt:previousPoint. |
|
381 |
view ~~ lastView ifTrue:[ |
|
397 | 382 |
view isNil ifTrue:[ |
515 | 383 |
"/ alien view - dont know if it likes a drop |
384 |
newCursor := Cursor questionMark |
|
394 | 385 |
] ifFalse:[ |
515 | 386 |
"/ ST/X view - ask it. |
397 | 387 |
(view canDrop:dropObjects) ifTrue:[ |
515 | 388 |
newCursor := Cursor thumbsUp |
397 | 389 |
] ifFalse:[ |
515 | 390 |
newCursor := Cursor thumbsDown |
397 | 391 |
] |
394 | 392 |
]. |
515 | 393 |
dragView cursor:newCursor now:true. |
394 | 394 |
lastView := view |
395 |
]. |
|
396 |
||
548
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|
397 |
(opaque and:[dragSize notNil]) ifTrue:[ |
394 | 398 |
self drawGenericAt:previousPoint. |
399 |
] ifFalse:[ |
|
400 |
self invertGenericAt:previousPoint |
|
401 |
]. |
|
515 | 402 |
|
548
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|
403 |
"Modified: 19.4.1997 / 11:33:54 / cg" |
342
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|
404 |
! |
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|
405 |
|
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406 |
endGenericDragX:x y:y |
548
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407 |
"finish a drag; restore from saveUnder (or reinvert), |
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|
408 |
then call for the endAction" |
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|
409 |
|
342
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|
410 |
previousPoint notNil ifTrue:[ |
548
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|
411 |
(opaque and:[dragSize notNil]) ifTrue:[ |
394 | 412 |
self restoreGenericAt:previousPoint |
413 |
] ifFalse:[ |
|
414 |
self invertGenericAt:previousPoint |
|
415 |
] |
|
342
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|
416 |
]. |
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|
417 |
previousPoint := nil. |
346
1612c23d9c5d
pass all dropInfo to an end-action
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|
418 |
self uncatchEvents. |
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|
419 |
self endDragAt:x @ y |
342
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|
420 |
|
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|
421 |
"Created: 26.10.1996 / 15:17:20 / cg" |
548
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|
422 |
"Modified: 19.4.1997 / 10:41:57 / cg" |
342
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|
423 |
! |
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|
424 |
|
348 | 425 |
startGenericDrag:aTwoArgDragBlock in:aView at:p atEnd:aFourArgEndBlock |
426 |
"start a generic (caller-provided drag); |
|
548
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|
427 |
Here, an inverting drag is initiated (i.e. the drawing is undone |
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|
428 |
by inverting again). See startOpaqueDrag for another variant. |
348 | 429 |
the dragBlock, aTwoArgDragBlock will be called with two args |
430 |
aPoint and a drawingGC, to perform the drawing at some dragPoint. |
|
431 |
The drag starts in aView at point p. |
|
432 |
When finished, the endAction is called with four args: |
|
433 |
the targetView, the targetViews windowID (useful, if its an alien view), |
|
434 |
the dropPoint in root-coordinates and the dropPoint within the targetView" |
|
435 |
||
342
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|
436 |
self catchEventsFrom:aView. |
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|
437 |
motionAction := #doGenericDragX:y:. |
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|
438 |
releaseAction := #endGenericDragX:y:. |
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|
439 |
initialPoint := p. |
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|
440 |
previousPoint := nil. |
348 | 441 |
dragBlock := aTwoArgDragBlock. |
442 |
dropAction := aFourArgEndBlock. |
|
342
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|
443 |
|
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|
444 |
"Created: 26.10.1996 / 15:16:13 / cg" |
548
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|
445 |
"Modified: 19.4.1997 / 10:44:32 / cg" |
394 | 446 |
! |
447 |
||
448 |
startOpaqueDrag:aTwoArgDragBlock offset:offs extent:ext in:aView at:p atEnd:aFourArgEndBlock |
|
449 |
"start a generic opaque (caller-provided drag); |
|
450 |
opaque drag means, that the drawing cannot be undone by two inverting |
|
451 |
draws, but instead, the area under the dragged object must be saved |
|
452 |
and restored. The areas size to be saved/restored is passed in ext. |
|
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 |
||
460 |
self catchEventsFrom:aView. |
|
461 |
motionAction := #doGenericDragX:y:. |
|
462 |
releaseAction := #endGenericDragX:y:. |
|
463 |
initialPoint := p. |
|
464 |
previousPoint := nil. |
|
465 |
dragBlock := aTwoArgDragBlock. |
|
466 |
dropAction := aFourArgEndBlock. |
|
467 |
opaque := true. |
|
468 |
dragSize := ext. |
|
469 |
dragOffset := offs. |
|
470 |
||
471 |
"Modified: 26.10.1996 / 15:09:26 / cg" |
|
472 |
"Created: 26.10.1996 / 15:16:13 / cg" |
|
473 |
||
342
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|
474 |
! ! |
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changeset
|
475 |
|
548
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|
476 |
!DragAndDropManager methodsFor:'dragging - generic - inverting'! |
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|
477 |
|
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|
478 |
invertGenericAt:ip |
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|
479 |
"draw for a generic inverting drag" |
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|
480 |
|
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|
481 |
|t offs p rootView| |
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|
482 |
|
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|
483 |
rootView := dragView device rootView. |
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|
484 |
|
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changeset
|
485 |
(p := lastScreenPosition) isNil ifTrue:[ |
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diff
changeset
|
486 |
p := ip. |
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515
diff
changeset
|
487 |
|
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diff
changeset
|
488 |
" |
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diff
changeset
|
489 |
get device coordinates |
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parents:
515
diff
changeset
|
490 |
" |
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diff
changeset
|
491 |
(t := dragView transformation) notNil ifTrue:[ |
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changeset
|
492 |
p := t applyTo:p. |
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diff
changeset
|
493 |
]. |
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diff
changeset
|
494 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
495 |
" |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
496 |
translate to screen |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
497 |
" |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
498 |
offs := dragView device |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
499 |
translatePoint:0@0 |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
500 |
from:(dragView id) to:(rootView id). |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
501 |
p := p + offs. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
502 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
503 |
lastScreenPosition := p. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
504 |
]. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
505 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
506 |
rootView clippedByChildren:false. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
507 |
rootView xoring:[ |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
508 |
rootView lineWidth:0. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
509 |
self callForDragActionAt:p in:rootView. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
510 |
rootView flush |
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 |
"Created: 26.10.1996 / 15:15:26 / cg" |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
514 |
"Modified: 19.4.1997 / 11:35:33 / cg" |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
515 |
! ! |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
516 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
517 |
!DragAndDropManager methodsFor:'dragging - generic - opaque'! |
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 |
drawGenericAt:ip |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
520 |
"draw for a generic opaque drag" |
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 |
|t offs p rootView szX szY| |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
523 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
524 |
rootView := dragView device rootView. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
525 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
526 |
p := ip. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
527 |
|
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 |
"/ get device coordinates |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
530 |
"/ |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
531 |
(t := dragView transformation) notNil ifTrue:[ |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
532 |
p := t applyTo:p. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
533 |
]. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
534 |
|
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 |
"/ translate to screen |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
537 |
"/ |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
538 |
offs := dragView device |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
539 |
translatePoint:0@0 |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
540 |
from:(dragView id) to:(rootView id). |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
541 |
p := p + offs. |
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 |
rootView clippedByChildren:false. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
544 |
|
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 |
"/ copy from screen to saveUnder |
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 |
szX := dragSize x. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
549 |
szY := dragSize y. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
550 |
saveUnder isNil ifTrue:[ |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
551 |
saveUnder := Form |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
552 |
width:szX |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
553 |
height:szY |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
554 |
depth:rootView device depth |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
555 |
on:dragView device. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
556 |
saveUnder clippedByChildren:false. |
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 |
lastScreenPosition := p - dragOffset. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
560 |
saveUnder |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
561 |
copyFrom:rootView |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
562 |
x:lastScreenPosition x |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
563 |
y:lastScreenPosition y |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
564 |
toX:0 |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
565 |
y:0 |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
566 |
width:szX |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
567 |
height:szY. |
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 |
"/ draw using the dragAction block |
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 |
rootView lineWidth:0. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
573 |
self callForDragActionAt:p in:rootView. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
574 |
rootView flush |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
575 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
576 |
"Modified: 19.4.1997 / 10:45:48 / cg" |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
577 |
! |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
578 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
579 |
restoreGenericAt:ip |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
580 |
"restore from saveUnder for a generic opaque drag" |
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 |
|rootView| |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
583 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
584 |
rootView := dragView device rootView. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
585 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
586 |
"/ |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
587 |
"/ copy from saveUnder back to screen |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
588 |
"/ |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
589 |
rootView clippedByChildren:false. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
590 |
rootView |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
591 |
copyFrom:saveUnder |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
592 |
x:0 y:0 |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
593 |
toX:lastScreenPosition x y:lastScreenPosition y |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
594 |
width:dragSize x |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
595 |
height:dragSize y. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
596 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
597 |
"Modified: 19.4.1997 / 10:46:39 / cg" |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
598 |
! ! |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
599 |
|
342
7563cbf04502
added genericDrag & arrowDrag
Claus Gittinger <cg@exept.de>
parents:
341
diff
changeset
|
600 |
!DragAndDropManager methodsFor:'dragging - lines'! |
341 | 601 |
|
602 |
doLineDragX:x y:y |
|
548
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
603 |
"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
|
604 |
|
341 | 605 |
previousPoint notNil ifTrue:[ |
606 |
self invertLineFrom:initialPoint to:previousPoint |
|
607 |
]. |
|
608 |
previousPoint := x @ y. |
|
609 |
self invertLineFrom:initialPoint to:previousPoint |
|
610 |
||
548
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
611 |
"Modified: 19.4.1997 / 12:39:43 / cg" |
341 | 612 |
! |
613 |
||
614 |
endLineDragX:x y:y |
|
548
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
615 |
"end a line drag - invert previous, deinstall event catcher |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
616 |
and call for endDrag action" |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
617 |
|
341 | 618 |
previousPoint notNil ifTrue:[ |
619 |
self invertLineFrom:initialPoint to:previousPoint |
|
620 |
]. |
|
548
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
621 |
|
341 | 622 |
previousPoint := nil. |
548
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
623 |
dragView device sync. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
624 |
|
346
1612c23d9c5d
pass all dropInfo to an end-action
Claus Gittinger <cg@exept.de>
parents:
345
diff
changeset
|
625 |
self uncatchEvents. |
548
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
626 |
self endDragAt:x @ y. |
341 | 627 |
|
628 |
"Created: 26.10.1996 / 15:17:20 / cg" |
|
548
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
629 |
"Modified: 19.4.1997 / 12:40:14 / cg" |
341 | 630 |
! |
631 |
||
632 |
invertLineFrom:ip1 to:ip2 |
|
548
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
633 |
"invert for a line drag" |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
634 |
|
342
7563cbf04502
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341
diff
changeset
|
635 |
|t offs p1 p2 rootView a| |
341 | 636 |
|
637 |
rootView := dragView device rootView. |
|
638 |
||
639 |
p1 := ip1. |
|
640 |
p2 := ip2. |
|
641 |
||
642 |
" |
|
643 |
get device coordinates |
|
644 |
" |
|
645 |
(t := dragView transformation) notNil ifTrue:[ |
|
646 |
p1 := t applyTo:p1. |
|
647 |
p2 := t applyTo:p2. |
|
648 |
]. |
|
649 |
||
650 |
" |
|
651 |
translate to screen |
|
652 |
" |
|
653 |
offs := dragView device |
|
654 |
translatePoint:0@0 |
|
655 |
from:(dragView id) to:(rootView id). |
|
656 |
p1 := p1 + offs. |
|
657 |
p2 := p2 + offs. |
|
658 |
||
659 |
rootView clippedByChildren:false. |
|
660 |
rootView xoring:[ |
|
661 |
rootView lineWidth:0. |
|
342
7563cbf04502
added genericDrag & arrowDrag
Claus Gittinger <cg@exept.de>
parents:
341
diff
changeset
|
662 |
lineMode == #arrow ifTrue:[ |
7563cbf04502
added genericDrag & arrowDrag
Claus Gittinger <cg@exept.de>
parents:
341
diff
changeset
|
663 |
a := Arrow from:p1 to:p2. |
7563cbf04502
added genericDrag & arrowDrag
Claus Gittinger <cg@exept.de>
parents:
341
diff
changeset
|
664 |
a arrowHeadLength:(rootView device horizontalPixelPerMillimeter * 4) rounded. |
7563cbf04502
added genericDrag & arrowDrag
Claus Gittinger <cg@exept.de>
parents:
341
diff
changeset
|
665 |
a displayFilledOn:rootView. |
7563cbf04502
added genericDrag & arrowDrag
Claus Gittinger <cg@exept.de>
parents:
341
diff
changeset
|
666 |
] ifFalse:[ |
7563cbf04502
added genericDrag & arrowDrag
Claus Gittinger <cg@exept.de>
parents:
341
diff
changeset
|
667 |
rootView displayLineFrom:p1 to:p2. |
7563cbf04502
added genericDrag & arrowDrag
Claus Gittinger <cg@exept.de>
parents:
341
diff
changeset
|
668 |
]. |
341 | 669 |
rootView flush |
670 |
]. |
|
671 |
||
672 |
"Created: 26.10.1996 / 15:15:26 / cg" |
|
548
1a81d6be65b4
added comments & docu, examples.
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parents:
515
diff
changeset
|
673 |
"Modified: 19.4.1997 / 12:40:29 / cg" |
342
7563cbf04502
added genericDrag & arrowDrag
Claus Gittinger <cg@exept.de>
parents:
341
diff
changeset
|
674 |
! |
341 | 675 |
|
345 | 676 |
startArrowDragIn:aView at:p atEnd:aBlock |
348 | 677 |
"start a line-drag of an arrow-line. |
678 |
The drag starts in aView at point p. |
|
679 |
When finished, the endAction is called with four args: |
|
680 |
the targetView, the targetViews windowID (useful, if its an alien view), |
|
681 |
the dropPoint in root-coordinates and the dropPoint within the targetView" |
|
682 |
||
342
7563cbf04502
added genericDrag & arrowDrag
Claus Gittinger <cg@exept.de>
parents:
341
diff
changeset
|
683 |
self catchEventsFrom:aView. |
7563cbf04502
added genericDrag & arrowDrag
Claus Gittinger <cg@exept.de>
parents:
341
diff
changeset
|
684 |
motionAction := #doLineDragX:y:. |
7563cbf04502
added genericDrag & arrowDrag
Claus Gittinger <cg@exept.de>
parents:
341
diff
changeset
|
685 |
releaseAction := #endLineDragX:y:. |
7563cbf04502
added genericDrag & arrowDrag
Claus Gittinger <cg@exept.de>
parents:
341
diff
changeset
|
686 |
initialPoint := p. |
7563cbf04502
added genericDrag & arrowDrag
Claus Gittinger <cg@exept.de>
parents:
341
diff
changeset
|
687 |
previousPoint := nil. |
7563cbf04502
added genericDrag & arrowDrag
Claus Gittinger <cg@exept.de>
parents:
341
diff
changeset
|
688 |
dragBlock := nil. |
7563cbf04502
added genericDrag & arrowDrag
Claus Gittinger <cg@exept.de>
parents:
341
diff
changeset
|
689 |
lineMode := #arrow. |
345 | 690 |
dropAction := aBlock. |
342
7563cbf04502
added genericDrag & arrowDrag
Claus Gittinger <cg@exept.de>
parents:
341
diff
changeset
|
691 |
|
7563cbf04502
added genericDrag & arrowDrag
Claus Gittinger <cg@exept.de>
parents:
341
diff
changeset
|
692 |
"Modified: 26.10.1996 / 15:09:26 / cg" |
7563cbf04502
added genericDrag & arrowDrag
Claus Gittinger <cg@exept.de>
parents:
341
diff
changeset
|
693 |
"Created: 26.10.1996 / 15:16:13 / cg" |
394 | 694 |
|
342
7563cbf04502
added genericDrag & arrowDrag
Claus Gittinger <cg@exept.de>
parents:
341
diff
changeset
|
695 |
! |
341 | 696 |
|
348 | 697 |
startLineDragIn:aView at:p atEnd:aFourArgEndBlock |
698 |
"start a line-drag of a normal line. |
|
699 |
The drag starts in aView at point p. |
|
700 |
When finished, the endAction is called with four args: |
|
701 |
the targetView, the targetViews windowID (useful, if its an alien view), |
|
702 |
the dropPoint in root-coordinates and the dropPoint within the targetView" |
|
703 |
||
341 | 704 |
self catchEventsFrom:aView. |
705 |
motionAction := #doLineDragX:y:. |
|
706 |
releaseAction := #endLineDragX:y:. |
|
707 |
initialPoint := p. |
|
342
7563cbf04502
added genericDrag & arrowDrag
Claus Gittinger <cg@exept.de>
parents:
341
diff
changeset
|
708 |
previousPoint := nil. |
7563cbf04502
added genericDrag & arrowDrag
Claus Gittinger <cg@exept.de>
parents:
341
diff
changeset
|
709 |
dragBlock := nil. |
7563cbf04502
added genericDrag & arrowDrag
Claus Gittinger <cg@exept.de>
parents:
341
diff
changeset
|
710 |
lineMode := nil. |
348 | 711 |
dropAction := aFourArgEndBlock. |
341 | 712 |
|
713 |
"Modified: 26.10.1996 / 15:09:26 / cg" |
|
714 |
"Created: 26.10.1996 / 15:16:13 / cg" |
|
394 | 715 |
|
341 | 716 |
! ! |
717 |
||
397 | 718 |
!DragAndDropManager methodsFor:'drawing'! |
719 |
||
720 |
showDragging:items in:aView at:p |
|
548
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
721 |
"helper for dragging dragObjects: draw them all" |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
722 |
|
397 | 723 |
|offs| |
724 |
||
548
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
725 |
offs := 0. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
726 |
items do:[:item | |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
727 |
item displayOn:aView at:p + (0@offs). |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
728 |
offs := offs + (item heightOn:self) |
397 | 729 |
] |
730 |
||
548
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
731 |
"Modified: 19.4.1997 / 12:41:24 / cg" |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
732 |
! ! |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
733 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
734 |
!DragAndDropManager methodsFor:'dropping'! |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
735 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
736 |
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
|
737 |
"try to drop some object in a targetView; |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
738 |
if any view along the targetViews superView chain takes it, |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
739 |
the okAction is evaluated; if not, failAction is evaluated. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
740 |
This may be sent from a drag initiators endDrag block." |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
741 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
742 |
|v pnt| |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
743 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
744 |
v := targetView. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
745 |
pnt := aPoint. |
397 | 746 |
|
548
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
747 |
[v notNil] whileTrue:[ |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
748 |
(v canDrop:something) ifTrue:[ |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
749 |
v |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
750 |
drop:something |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
751 |
at:aPoint |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
752 |
from:sourceView |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
753 |
with:[:o | okAction. ^ true] |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
754 |
ifFail:[:o | failAction. ^ false]. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
755 |
]. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
756 |
v := v superView. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
757 |
pnt := nil |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
758 |
]. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
759 |
failAction value. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
760 |
^ false |
397 | 761 |
|
548
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
762 |
"Modified: 19.4.1997 / 12:42:36 / cg" |
397 | 763 |
! ! |
764 |
||
765 |
!DragAndDropManager methodsFor:'easy drag & drop'! |
|
766 |
||
767 |
startDrag:anObjectOrCollection from:aView offset:offset |
|
768 |
"start a drop at the current pointer position" |
|
769 |
||
770 |
|pos displayObjects device width height| |
|
771 |
||
772 |
self dropObjects:anObjectOrCollection. |
|
773 |
||
774 |
device := aView device. |
|
775 |
pos := device translatePoint:(device pointerPosition) |
|
776 |
from:(device rootView id) |
|
777 |
to:(aView id). |
|
778 |
||
779 |
displayObjects := dropObjects collect:[:each | each displayObject on:device]. |
|
780 |
height := displayObjects inject:0 into:[:sum :each | sum + (each heightOn:aView)]. |
|
781 |
width := displayObjects inject:0 into:[:max :each | max max:(each widthOn:aView)]. |
|
782 |
||
783 |
self startOpaqueDrag:[:aPoint :aView|self showDragging:displayObjects in:aView at:(aPoint - offset)] |
|
784 |
offset:offset |
|
785 |
extent:(width @ height) |
|
786 |
in:aView |
|
787 |
at:pos |
|
788 |
atEnd:nil. |
|
789 |
! ! |
|
790 |
||
341 | 791 |
!DragAndDropManager methodsFor:'event catching'! |
792 |
||
793 |
buttonMotion:button x:x y:y view:aView |
|
794 |
self perform:motionAction with:x with:y |
|
795 |
||
796 |
"Created: 26.10.1996 / 15:09:00 / cg" |
|
394 | 797 |
|
798 |
||
341 | 799 |
! |
800 |
||
801 |
buttonRelease:button x:x y:y view:aView |
|
548
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
802 |
self perform:releaseAction with:x with:y. |
394 | 803 |
|
548
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
804 |
"Modified: 19.4.1997 / 12:37:02 / cg" |
341 | 805 |
! |
806 |
||
807 |
handlesButtonMotion:button inView:aView |
|
808 |
"query from event processor: am I interested in button-events ? |
|
809 |
yes I am (to activate the clicked-on field)." |
|
810 |
||
811 |
^ aView == dragView |
|
812 |
||
813 |
"Created: 26.10.1996 / 15:05:36 / cg" |
|
394 | 814 |
|
341 | 815 |
! |
816 |
||
817 |
handlesButtonRelease:button inView:aView |
|
818 |
"query from event processor: am I interested in button-events ? |
|
819 |
yes I am (to activate the clicked-on field)." |
|
820 |
||
821 |
^ aView == dragView |
|
822 |
||
823 |
"Created: 26.10.1996 / 15:05:48 / cg" |
|
394 | 824 |
|
341 | 825 |
! ! |
826 |
||
827 |
!DragAndDropManager methodsFor:'private'! |
|
828 |
||
548
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
829 |
callForDragActionAt:aPoint in:aView |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
830 |
"evaluate the user supplied dragAction. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
831 |
Look how many args it expects and invoke with |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
832 |
position |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
833 |
dragView |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
834 |
dragObjects" |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
835 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
836 |
|numArgs| |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
837 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
838 |
(numArgs := dragBlock numArgs) == 1 ifTrue:[ |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
839 |
dragBlock value:aPoint |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
840 |
] ifFalse:[ |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
841 |
numArgs == 2 ifTrue:[ |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
842 |
dragBlock value:aPoint value:aView |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
843 |
] ifFalse:[ |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
844 |
dragBlock value:aPoint value:aView value:dropObjects. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
845 |
] |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
846 |
] |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
847 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
848 |
"Created: 19.4.1997 / 10:05:55 / cg" |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
849 |
! |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
850 |
|
341 | 851 |
catchEventsFrom:aView |
394 | 852 |
dragView := aView. |
853 |
saveCursor := dragView cursor. |
|
854 |
||
341 | 855 |
rememberedDelegate := aView delegate. |
394 | 856 |
aView delegate:self. |
548
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
857 |
aView device grabPointerInView:aView. |
341 | 858 |
|
548
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
859 |
"Modified: 19.4.1997 / 12:36:04 / cg" |
394 | 860 |
! |
861 |
||
862 |
destinationViewAt:ip |
|
863 |
|rootPoint t viewId offs destinationId lastViewId destinationView |
|
864 |
rootView destinationPoint device| |
|
865 |
||
866 |
device := dragView device. |
|
867 |
rootView := device rootView. |
|
868 |
rootPoint := ip. |
|
869 |
||
870 |
" |
|
871 |
get device coordinates |
|
872 |
" |
|
873 |
(t := dragView transformation) notNil ifTrue:[ |
|
874 |
rootPoint := t applyTo:ip. |
|
875 |
]. |
|
876 |
viewId := rootView id. |
|
877 |
||
878 |
" |
|
879 |
translate to screen |
|
880 |
" |
|
881 |
offs := device translatePoint:0@0 from:(dragView id) to:viewId. |
|
882 |
rootPoint := rootPoint + offs. |
|
883 |
||
884 |
"search view the drop is in" |
|
885 |
||
886 |
[viewId notNil] whileTrue:[ |
|
887 |
destinationId := device viewIdFromPoint:rootPoint in:viewId. |
|
888 |
lastViewId := viewId. |
|
889 |
viewId := destinationId |
|
890 |
]. |
|
891 |
^ device viewFromId:lastViewId |
|
341 | 892 |
! |
893 |
||
346
1612c23d9c5d
pass all dropInfo to an end-action
Claus Gittinger <cg@exept.de>
parents:
345
diff
changeset
|
894 |
endDragAt:ip |
548
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
895 |
|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
|
896 |
rootView destinationPoint device| |
1612c23d9c5d
pass all dropInfo to an end-action
Claus Gittinger <cg@exept.de>
parents:
345
diff
changeset
|
897 |
|
394 | 898 |
dragView cursor:saveCursor now:true. |
899 |
device := dragView device. |
|
548
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
900 |
device ungrabPointer. |
394 | 901 |
rootView := device rootView. |
902 |
rootPoint := ip. |
|
346
1612c23d9c5d
pass all dropInfo to an end-action
Claus Gittinger <cg@exept.de>
parents:
345
diff
changeset
|
903 |
|
394 | 904 |
" |
905 |
get device coordinates |
|
906 |
" |
|
907 |
(t := dragView transformation) notNil ifTrue:[ |
|
908 |
rootPoint := t applyTo:ip. |
|
909 |
]. |
|
548
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
910 |
viewId := rootId := rootView id. |
346
1612c23d9c5d
pass all dropInfo to an end-action
Claus Gittinger <cg@exept.de>
parents:
345
diff
changeset
|
911 |
|
394 | 912 |
" |
913 |
translate to screen |
|
914 |
" |
|
548
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
915 |
offs := device translatePoint:0@0 from:(dragView id) to:rootId. |
394 | 916 |
rootPoint := rootPoint + offs. |
917 |
||
918 |
"search view the drop is in" |
|
346
1612c23d9c5d
pass all dropInfo to an end-action
Claus Gittinger <cg@exept.de>
parents:
345
diff
changeset
|
919 |
|
394 | 920 |
[viewId notNil] whileTrue:[ |
921 |
destinationId := device viewIdFromPoint:rootPoint in:viewId. |
|
922 |
lastViewId := viewId. |
|
923 |
viewId := destinationId |
|
924 |
]. |
|
925 |
destinationView := device viewFromId:lastViewId. |
|
926 |
destinationId := lastViewId. |
|
346
1612c23d9c5d
pass all dropInfo to an end-action
Claus Gittinger <cg@exept.de>
parents:
345
diff
changeset
|
927 |
|
548
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
928 |
"/ |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
929 |
"/ translate to destination view |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
930 |
"/ |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
931 |
destinationPoint := device translatePoint:rootPoint from:rootId to:destinationId. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
932 |
|
513 | 933 |
dropAction notNil ifTrue:[ |
934 |
"/ initiator wants to do it himself, manually. |
|
935 |
||
936 |
dropAction value:destinationView |
|
937 |
value:destinationId |
|
938 |
value:rootPoint |
|
939 |
value:destinationPoint. |
|
940 |
^ self |
|
941 |
]. |
|
942 |
||
943 |
"/ default drop behavior: |
|
944 |
"/ if its one of my own views, ask if dropping is ok. |
|
945 |
"/ if not, ask the device to drop it. |
|
946 |
||
394 | 947 |
destinationView notNil ifTrue:[ |
513 | 948 |
"/ |
949 |
"/ one of my views |
|
950 |
"/ |
|
394 | 951 |
destinationPoint := device translatePoint:rootPoint |
952 |
from:(rootView id) |
|
953 |
to:(destinationView id). |
|
954 |
destinationView transformation notNil ifTrue:[ |
|
955 |
destinationPoint := destinationView transformation applyInverseTo:destinationPoint |
|
513 | 956 |
]. |
957 |
||
958 |
(destinationView canDrop:dropObjects) ifTrue:[ |
|
959 |
destinationView drop:dropObjects at:destinationPoint. |
|
960 |
^ self. |
|
961 |
]. |
|
394 | 962 |
|
513 | 963 |
"/ try superViews along the chain ... |
964 |
destinationView := destinationView superView. |
|
965 |
[destinationView notNil] whileTrue:[ |
|
966 |
(destinationView canDrop:dropObjects) ifTrue:[ |
|
967 |
destinationView drop:dropObjects at:nil. |
|
968 |
^ self. |
|
969 |
]. |
|
970 |
destinationView := destinationView superView. |
|
346
1612c23d9c5d
pass all dropInfo to an end-action
Claus Gittinger <cg@exept.de>
parents:
345
diff
changeset
|
971 |
]. |
394 | 972 |
^ self |
973 |
]. |
|
346
1612c23d9c5d
pass all dropInfo to an end-action
Claus Gittinger <cg@exept.de>
parents:
345
diff
changeset
|
974 |
|
513 | 975 |
"/ |
976 |
"/ not one of my views |
|
977 |
"/ |
|
978 |
||
979 |
"/ XXX add external clipboard mechanism via display |
|
980 |
device |
|
981 |
drop:dropObjects |
|
982 |
inWindowID:destinationId |
|
983 |
position:destinationPoint |
|
984 |
rootPosition:rootPoint |
|
985 |
||
548
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
986 |
"Modified: 19.4.1997 / 12:36:29 / cg" |
346
1612c23d9c5d
pass all dropInfo to an end-action
Claus Gittinger <cg@exept.de>
parents:
345
diff
changeset
|
987 |
! |
1612c23d9c5d
pass all dropInfo to an end-action
Claus Gittinger <cg@exept.de>
parents:
345
diff
changeset
|
988 |
|
341 | 989 |
uncatchEvents |
990 |
dragView delegate:rememberedDelegate. |
|
991 |
||
992 |
"Created: 26.10.1996 / 15:22:29 / cg" |
|
394 | 993 |
|
411 | 994 |
" |
995 |
DragAndDropManager allInstancesDo:[:m | |
|
996 |
m uncatchEvents |
|
997 |
] |
|
998 |
" |
|
341 | 999 |
! ! |
1000 |
||
548
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1001 |
!DragAndDropManager::DemoView class methodsFor:'documentation'! |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1002 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1003 |
documentation |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1004 |
" |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1005 |
demonstrates rubber-line dragging. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1006 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1007 |
See the buttonPress method, where a drag is initiated. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1008 |
At endDrop, look at the transcript. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1009 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1010 |
[author:] |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1011 |
Claus Gittinger |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1012 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1013 |
[start with:] |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1014 |
DemoView new open |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1015 |
" |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1016 |
! ! |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1017 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1018 |
!DragAndDropManager::DemoView methodsFor:'events'! |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1019 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1020 |
buttonPress:button x:x y:y |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1021 |
DragAndDropManager new |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1022 |
startLineDragIn:self at:(x@y) |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1023 |
atEnd:[:view |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1024 |
:viewID |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1025 |
:rootPoint |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1026 |
:viewPoint | |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1027 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1028 |
Transcript show:'dropped at '; |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1029 |
show:viewPoint; |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1030 |
show:' (screen: '; |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1031 |
show:rootPoint; |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1032 |
show:') in '. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1033 |
view notNil ifTrue:[ |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1034 |
Transcript showCR:view |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1035 |
] ifFalse:[ |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1036 |
Transcript show:'alien view '; |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1037 |
showCR:viewID address |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1038 |
] |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1039 |
]. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1040 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1041 |
" |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1042 |
self new open |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1043 |
" |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1044 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1045 |
"Modified: 19.4.1997 / 11:40:46 / cg" |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1046 |
! ! |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1047 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1048 |
!DragAndDropManager::DemoView3 class methodsFor:'documentation'! |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1049 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1050 |
documentation |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1051 |
" |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1052 |
demonstrates arrow-line dragging. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1053 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1054 |
See the buttonPress method, where a drag is initiated. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1055 |
At endDrop, look at the transcript. |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1056 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1057 |
[author:] |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1058 |
Claus Gittinger |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1059 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1060 |
[start with:] |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1061 |
DemoView3 new open |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1062 |
" |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1063 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1064 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1065 |
! ! |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1066 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1067 |
!DragAndDropManager::DemoView3 methodsFor:'events'! |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1068 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1069 |
buttonPress:button x:x y:y |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1070 |
DragAndDropManager new |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1071 |
startArrowDragIn:self |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1072 |
at:(x@y) |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1073 |
atEnd:[:view |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1074 |
:viewID |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1075 |
:rootPoint |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1076 |
:viewPoint | |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1077 |
|
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1078 |
Transcript show:'dropped at '; |
1a81d6be65b4
added comments & docu, examples.
Claus Gittinger <cg@exept.de>
parents:
515
diff
changeset
|
1079 |
show:viewPoint; |
1a81d6be65b4
added comments & docu, examples.
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1080 |
show:' (screen: '; |
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|
1081 |
show:rootPoint; |
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1082 |
show:') in '. |
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|
1083 |
view notNil ifTrue:[ |
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|
1084 |
Transcript showCR:view |
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|
1085 |
] ifFalse:[ |
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|
1086 |
Transcript show:'alien view '; |
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|
1087 |
showCR:viewID address |
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|
1088 |
] |
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|
1089 |
]. |
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|
1090 |
|
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1091 |
" |
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1092 |
self new open |
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1093 |
" |
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1094 |
|
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1095 |
"Modified: 19.4.1997 / 12:45:29 / cg" |
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|
1096 |
! ! |
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|
1097 |
|
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1098 |
!DragAndDropManager::DemoView2 class methodsFor:'documentation'! |
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|
1099 |
|
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|
1100 |
documentation |
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|
1101 |
" |
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1102 |
demonstrates string dragging. |
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1103 |
|
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1104 |
See the buttonPress method, where a drag is initiated. |
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1105 |
At endDrop, look at the transcript. |
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|
1106 |
|
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|
1107 |
|
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|
1108 |
[author:] |
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1109 |
Claus Gittinger |
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|
1110 |
|
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|
1111 |
[start with:] |
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|
1112 |
DemoView2 new open |
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|
1113 |
" |
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|
1114 |
|
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|
1115 |
|
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1116 |
! ! |
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|
1117 |
|
515 | 1118 |
!DragAndDropManager::DemoView2 methodsFor:'events'! |
1119 |
||
1120 |
buttonPress:button x:x y:y |
|
1121 |
DragAndDropManager new |
|
1122 |
startGenericDrag:[:p :v | v displayString:'hello' at:p] |
|
1123 |
in:self |
|
1124 |
at:(x@y) |
|
1125 |
atEnd:[:view |
|
1126 |
:viewID |
|
1127 |
:rootPoint |
|
1128 |
:viewPoint | ] |
|
1129 |
||
1130 |
||
1131 |
" |
|
1132 |
self new open |
|
1133 |
" |
|
1134 |
||
1135 |
||
1136 |
! ! |
|
1137 |
||
341 | 1138 |
!DragAndDropManager class methodsFor:'documentation'! |
1139 |
||
1140 |
version |
|
548
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1141 |
^ '$Header: /cvs/stx/stx/libview2/DragAndDropManager.st,v 1.13 1997-04-19 15:22:38 cg Exp $' |
341 | 1142 |
! ! |