author | Claus Gittinger <cg@exept.de> |
Wed, 20 Feb 2019 10:29:52 +0100 | |
changeset 6539 | 11056d07f893 |
parent 6520 | bfddffa53838 |
child 6571 | 1ad83c609698 |
permissions | -rw-r--r-- |
104 | 1 |
" |
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COPYRIGHT (c) 1995 by Claus Gittinger |
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2179 | 3 |
All Rights Reserved |
104 | 4 |
|
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This software is furnished under a license and may be used |
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6 |
only in accordance with the terms of that license and with the |
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inclusion of the above copyright notice. This software may not |
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be provided or otherwise made available to, or used by, any |
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other person. No title to or ownership of the software is |
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hereby transferred. |
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" |
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"{ Package: 'stx:libwidg' }" |
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"{ NameSpace: Smalltalk }" |
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||
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Controller subclass:#VariablePanelController |
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instanceVariableNames:'movedHandle prevPos clickPos saveCursor startResizing resizeMode |
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opaqueResizing' |
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classVariableNames:'' |
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poolDictionaries:'' |
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category:'Interface-Support-Controllers' |
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! |
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||
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!VariablePanelController class methodsFor:'documentation'! |
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||
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copyright |
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" |
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COPYRIGHT (c) 1995 by Claus Gittinger |
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All Rights Reserved |
104 | 30 |
|
31 |
This software is furnished under a license and may be used |
|
32 |
only in accordance with the terms of that license and with the |
|
33 |
inclusion of the above copyright notice. This software may not |
|
34 |
be provided or otherwise made available to, or used by, any |
|
35 |
other person. No title to or ownership of the software is |
|
36 |
hereby transferred. |
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" |
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|
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! |
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||
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documentation |
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" |
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An abstract class for variablePanel controllers; |
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normally, not used directly by applications, these are created automatically |
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whenever a variablePanel is created. |
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Instances are responsible for tracking the mouse pointer and resize the |
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views (a panel) subviews as appropriate. |
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[author:] |
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Claus Gittinger |
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" |
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! ! |
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||
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!VariablePanelController methodsFor:'event handling'! |
57 |
||
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buttonMotion:state x:bx y:by |
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"mouse-button was moved while pressed; |
2179 | 60 |
clear prev handleBar and draw handle bar at new position |
61 |
" |
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|nextPos layout entered handle| |
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state == 0 ifTrue:[ |
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movedHandle notNil ifTrue:[ |
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"/ oops - how can this happen |
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self buttonRelease:1 x:bx y:bx. |
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movedHandle := nil |
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]. |
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view snapMode isNil ifTrue:[^ self]. |
104 | 72 |
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handle := self detectHandleIndexAt:bx y:by. |
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handle isNil ifTrue:[^ self]. |
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"check entering click button ...." |
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layout := view snapLayoutAt:handle. |
2179 | 78 |
entered := layout notNil and:[layout containsPointX:bx y:by]. |
104 | 79 |
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entered ~~ (self isSnapEntered) ifTrue:[ |
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entered ifTrue:[ |
82 |
saveCursor := view cursor. |
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view cursor:(Cursor hand). |
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] ifFalse:[ |
85 |
view cursor:saveCursor. |
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saveCursor := nil. |
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]. |
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view drawSnapAt:handle |
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]. |
90 |
^ self |
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]. |
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(movedHandle isNil or:[resizeMode isNil]) ifTrue:[^ self]. |
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94 |
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"/ kludge: workaround Windows bug, which sends a MOUSEMOVE |
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"/ (with same coordinate as previous MOUSE_DOWN |
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view orientation ~~ #vertical ifTrue:[ |
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clickPos == bx ifTrue:[^ self]. |
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prevPos == bx ifTrue:[^ self]. |
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100 |
] ifFalse:[ |
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clickPos == by ifTrue:[^ self]. |
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prevPos == by ifTrue:[^ self]. |
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]. |
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"RESIZING" |
106 |
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107 |
"compute new position ...." |
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nextPos := self checkedHandleMovementX:bx y:by. |
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"/ nextPos = prevPos ifTrue:[ |
110 |
"/ ^ self |
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"/ ]. |
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||
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resizeMode == #active ifTrue:[ |
114 |
"check position changed ..." |
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"/ nextPos > 10 ifTrue:[ |
116 |
"/ (prevPos - nextPos) abs < 2 ifTrue:[^ self]. |
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"/ ]. |
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opaqueResizing ifFalse:[ |
119 |
self doInvertHandle "undo the last invert" |
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] |
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] ifFalse:[ |
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"/ nextPos > 10 ifTrue:[ |
123 |
"/ (clickPos - nextPos) abs < 5 ifTrue:[^ self]. |
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"/ ]. |
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resizeMode := #active. |
131 | 126 |
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"/ restore the snap cursor |
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self isSnapEntered ifTrue:[ |
2179 | 129 |
view grabPointerWithCursor:saveCursor. |
130 |
saveCursor := nil. |
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view drawSnapAt:movedHandle. |
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] |
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]. |
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prevPos := nextPos. |
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opaqueResizing ifFalse:[ |
137 |
self doInvertHandle. |
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] ifTrue:[ |
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self doResize. |
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]. |
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"Modified: / 24.8.2001 / 15:34:57 / cg" |
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! |
144 |
||
200 | 145 |
buttonPress:button x:bx y:by |
2179 | 146 |
"button was pressed - setup resizing if a handle is hit |
147 |
" |
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|handleView hindex isMin isMax layout| |
200 | 149 |
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(button == 1) ifFalse:[ |
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movedHandle isNil ifTrue:[ |
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self pointerLeave:0. |
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super buttonPress:button x:bx y:by. |
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]. |
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^ self. |
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]. |
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view compressMotionEvents:true. |
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hindex := self detectHandleIndexAt:bx y:by. |
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"/ movedHandle notNil ifTrue:[ |
162 |
"/ hindex ~~ movedHandle ifTrue:[self pointerLeave:0]. "restore the cursor" |
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163 |
"/ ]. |
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( (movedHandle := hindex) notNil |
166 |
and:[(view canChangeExtentOfViewAt:movedHandle)] |
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) ifFalse:[ |
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^ self |
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]. |
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view grabPointerWithCursor:(view cursor). |
172 |
handleView := view subViews at:movedHandle. |
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||
174 |
"setup resizeing" |
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resizeMode := #init. |
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view orientation ~~ #vertical ifTrue:[ |
178 |
clickPos := bx. |
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179 |
prevPos := handleView right. |
|
180 |
] ifFalse:[ |
|
181 |
clickPos := by. |
|
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prevPos := handleView bottom. |
|
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]. |
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prevPos := prevPos + (view barHeight + 1 // 2). |
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|
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"/ self pointerEnter:0 x:bx y:by. |
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|
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opaqueResizing := self sensor shiftDown or:[UserPreferences current opaqueVariablePanelResizing == true]. |
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189 |
|
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self isSnapEntered ifTrue:[ |
2179 | 191 |
"there is a snap under the cursor; redraw selected" |
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view snapMode == #both ifTrue:[ |
193 |
layout := view snapLayoutAt:movedHandle. |
|
194 |
view orientation == #vertical ifTrue:[ |
|
195 |
isMax := bx > (layout right - (layout width//3)). |
|
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isMin := bx < (layout left + (layout width//3)). |
|
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] ifFalse:[ |
|
198 |
isMax := by > (layout bottom - (layout height//3)). |
|
199 |
isMin := by < (layout top + (layout height//3)). |
|
200 |
]. |
|
201 |
handleView objectAttributeAt:#snapPart put:(isMin ifTrue:[#left] ifFalse:[ isMax ifTrue:[#right] ifFalse:[#middle]]). |
|
202 |
]. |
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view drawSnapAt:movedHandle. |
204 |
] ifFalse:[ |
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205 |
opaqueResizing ifFalse:[ |
2529 | 206 |
self doInvertHandle. |
207 |
resizeMode := #active. |
|
208 |
]. |
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invert on click (not on first move)
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]. |
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|
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"Modified: / 24.8.2001 / 15:35:27 / cg" |
200 | 212 |
! |
213 |
||
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214 |
buttonRelease:button x:bx y:by |
104 | 215 |
"end bar-move" |
216 |
||
3921 | 217 |
|layout aboveView| |
1871 | 218 |
|
3921 | 219 |
(button == 1) ifFalse:[ |
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movedHandle isNil ifTrue:[ |
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221 |
resizeMode := nil. |
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222 |
super buttonRelease:button x:bx y:by |
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223 |
]. |
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224 |
^ self. |
2179 | 225 |
]. |
226 |
||
2510 | 227 |
view compressMotionEvents:false. |
2179 | 228 |
view ungrabPointer. |
229 |
movedHandle isNil ifTrue:[^ self]. |
|
1871 | 230 |
|
2179 | 231 |
resizeMode notNil ifTrue:[ |
232 |
resizeMode == #active ifTrue:[ |
|
2236 | 233 |
(view snapMode == #both) ifFalse:[ |
234 |
aboveView := view subViews at:movedHandle. |
|
235 |
aboveView objectAttributeAt:#vpext put:(aboveView relativeCorner). |
|
236 |
]. |
|
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237 |
opaqueResizing ifFalse:[ |
2252 | 238 |
self doResize |
239 |
]. |
|
2179 | 240 |
] ifFalse:[ |
241 |
( (layout := view snapLayoutAt:movedHandle) notNil |
|
242 |
and:[layout containsPointX:bx y:by] |
|
243 |
) ifTrue:[ |
|
2236 | 244 |
self doSnapPressedX:bx y:by |
2179 | 245 |
]. |
1871 | 246 |
]. |
2179 | 247 |
]. |
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248 |
movedHandle := nil. |
2179 | 249 |
self pointerLeave:0. |
250 |
self pointerEnter:0 x:bx y:by. "check whether mouse on a handle" |
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|
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252 |
"Modified: / 24.8.2001 / 15:35:33 / cg" |
1871 | 253 |
! |
254 |
||
2179 | 255 |
pointerEnter:state x:bx y:by |
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256 |
"this could be send by the KDE before a button press event; |
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|
257 |
test whether the state == 0 |
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258 |
" |
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|
259 |
|handle| |
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260 |
|
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|
261 |
state ~~ 0 ifTrue:[ ^ self ]. |
2179 | 262 |
|
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263 |
view snapMode notNil ifTrue:[ |
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|
264 |
"/ test whether a handle is under the cursor |
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|
265 |
handle := self detectHandleIndexAt:bx y:by. |
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|
266 |
handle notNil ifTrue:[ |
6464 | 267 |
"/ there is a handle; thus we have to setup the cursor... |
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|
268 |
self buttonMotion:state x:bx y:by |
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269 |
]. |
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bug fix in #pointerLeave: the KDE sends a #pointerLeave: with each button press which should be discard
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|
270 |
]. |
6464 | 271 |
|
272 |
view showHandleWhenEntered ifTrue:[ |
|
273 |
handle := self detectHandleIndexAt:bx y:by. |
|
274 |
handle notNil ifTrue:[ |
|
275 |
view showHandle:true |
|
276 |
]. |
|
277 |
]. |
|
278 |
||
279 |
"Modified: / 22-10-2018 / 23:42:39 / Claus Gittinger" |
|
2179 | 280 |
! |
281 |
||
282 |
pointerLeave:state |
|
6464 | 283 |
"this could be send by KDE before a button press event; |
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|
284 |
test whether the state == 0 |
954415c8fa83
bug fix in #pointerLeave: the KDE sends a #pointerLeave: with each button press which should be discard
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2652
diff
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|
285 |
" |
6464 | 286 |
|
2665
954415c8fa83
bug fix in #pointerLeave: the KDE sends a #pointerLeave: with each button press which should be discard
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2652
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changeset
|
287 |
state ~~ 0 ifTrue:[ ^ self ]. |
954415c8fa83
bug fix in #pointerLeave: the KDE sends a #pointerLeave: with each button press which should be discard
ca
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|
288 |
|
954415c8fa83
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parents:
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diff
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|
289 |
"/ the view is leave and no button is pressed |
954415c8fa83
bug fix in #pointerLeave: the KDE sends a #pointerLeave: with each button press which should be discard
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diff
changeset
|
290 |
"/ restore the cursor and redraw the snap if not nil |
2179 | 291 |
|
292 |
saveCursor notNil ifTrue:[ |
|
293 |
"restore the cursor" |
|
294 |
view cursor:saveCursor. |
|
295 |
saveCursor := nil |
|
296 |
]. |
|
297 |
||
2665
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bug fix in #pointerLeave: the KDE sends a #pointerLeave: with each button press which should be discard
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|
298 |
resizeMode := nil. |
2179 | 299 |
|
2665
954415c8fa83
bug fix in #pointerLeave: the KDE sends a #pointerLeave: with each button press which should be discard
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|
300 |
movedHandle notNil ifTrue:[ |
954415c8fa83
bug fix in #pointerLeave: the KDE sends a #pointerLeave: with each button press which should be discard
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changeset
|
301 |
view drawSnapAt:movedHandle. |
954415c8fa83
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changeset
|
302 |
self buttonRelease:1 x:0 y:0. |
954415c8fa83
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diff
changeset
|
303 |
movedHandle := nil. |
2179 | 304 |
]. |
6464 | 305 |
|
306 |
view showHandleWhenEntered ifTrue:[ |
|
307 |
view showHandle:false |
|
308 |
]. |
|
309 |
||
310 |
"Modified (format): / 22-10-2018 / 23:43:57 / Claus Gittinger" |
|
2179 | 311 |
! ! |
312 |
||
313 |
!VariablePanelController methodsFor:'private'! |
|
314 |
||
2159
2864c0de7f33
make certain, that handles can always be clicked on;
Claus Gittinger <cg@exept.de>
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2005
diff
changeset
|
315 |
checkedHandleMovementX:bx y:by |
2179 | 316 |
"check and return valid position a handle can be placed |
317 |
" |
|
5518 | 318 |
|max min pos subViews halfBarHeight barHeight |
319 |
thisView nextView nextView2 |
|
320 |
minExtentThisView| |
|
2159
2864c0de7f33
make certain, that handles can always be clicked on;
Claus Gittinger <cg@exept.de>
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2005
diff
changeset
|
321 |
|
2864c0de7f33
make certain, that handles can always be clicked on;
Claus Gittinger <cg@exept.de>
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diff
changeset
|
322 |
subViews := view subViews. |
2252 | 323 |
barHeight := view barHeight. |
2245 | 324 |
"/ halfBarHeight := view barHeight + 1 // 2. |
2252 | 325 |
halfBarHeight := barHeight // 2. |
326 |
||
5518 | 327 |
thisView := subViews at:movedHandle. "/ the view above the handle |
2252 | 328 |
nextView := subViews at:movedHandle + 1. |
329 |
nextView2 := subViews at:movedHandle + 2 ifAbsent:nil. |
|
2159
2864c0de7f33
make certain, that handles can always be clicked on;
Claus Gittinger <cg@exept.de>
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2005
diff
changeset
|
330 |
|
5518 | 331 |
minExtentThisView := thisView minExtent. |
332 |
||
2179 | 333 |
view orientation == #vertical ifTrue:[ |
2245 | 334 |
pos := by. |
2252 | 335 |
min := thisView top. |
5518 | 336 |
minExtentThisView notNil ifTrue:[ |
337 |
min := min + (minExtentThisView y ? 0) |
|
338 |
]. |
|
2252 | 339 |
nextView2 isNil ifTrue:[ |
340 |
max := view height. |
|
341 |
] ifFalse:[ |
|
342 |
max := nextView2 top. |
|
343 |
]. |
|
2159
2864c0de7f33
make certain, that handles can always be clicked on;
Claus Gittinger <cg@exept.de>
parents:
2005
diff
changeset
|
344 |
] ifFalse:[ |
2245 | 345 |
pos := bx. |
2252 | 346 |
min := thisView left. |
5518 | 347 |
minExtentThisView notNil ifTrue:[ |
348 |
min := min + (minExtentThisView x ? 0) |
|
349 |
]. |
|
2252 | 350 |
nextView2 isNil ifTrue:[ |
351 |
max := view width. |
|
352 |
] ifFalse:[ |
|
353 |
max := nextView2 left. |
|
354 |
]. |
|
2159
2864c0de7f33
make certain, that handles can always be clicked on;
Claus Gittinger <cg@exept.de>
parents:
2005
diff
changeset
|
355 |
]. |
2864c0de7f33
make certain, that handles can always be clicked on;
Claus Gittinger <cg@exept.de>
parents:
2005
diff
changeset
|
356 |
|
2260
ce3be65862db
min/max - make certain that handle can still be grabbed
Claus Gittinger <cg@exept.de>
parents:
2252
diff
changeset
|
357 |
min := min + halfBarHeight "- 1". |
2252 | 358 |
barHeight odd ifTrue:[ min := min + 1 ]. |
2260
ce3be65862db
min/max - make certain that handle can still be grabbed
Claus Gittinger <cg@exept.de>
parents:
2252
diff
changeset
|
359 |
movedHandle == 1 ifTrue:[ |
ce3be65862db
min/max - make certain that handle can still be grabbed
Claus Gittinger <cg@exept.de>
parents:
2252
diff
changeset
|
360 |
min := min + view margin |
ce3be65862db
min/max - make certain that handle can still be grabbed
Claus Gittinger <cg@exept.de>
parents:
2252
diff
changeset
|
361 |
]. |
2245 | 362 |
|
363 |
"/ max := max - halfBarHeight. |
|
2252 | 364 |
"/ movedHandle == (subViews size-1) ifTrue:[ |
365 |
"/ max := max - barHeight + 2. |
|
366 |
"/ ] ifFalse:[ |
|
5475 | 367 |
max := max - halfBarHeight "+ 1". |
368 |
true "barHeight odd" ifTrue:[ max := max - 1 ]. |
|
2252 | 369 |
"/ ]. |
2159
2864c0de7f33
make certain, that handles can always be clicked on;
Claus Gittinger <cg@exept.de>
parents:
2005
diff
changeset
|
370 |
|
2260
ce3be65862db
min/max - make certain that handle can still be grabbed
Claus Gittinger <cg@exept.de>
parents:
2252
diff
changeset
|
371 |
movedHandle == (subViews size-1) ifTrue:[ |
ce3be65862db
min/max - make certain that handle can still be grabbed
Claus Gittinger <cg@exept.de>
parents:
2252
diff
changeset
|
372 |
max := max - view margin |
ce3be65862db
min/max - make certain that handle can still be grabbed
Claus Gittinger <cg@exept.de>
parents:
2252
diff
changeset
|
373 |
]. |
ce3be65862db
min/max - make certain that handle can still be grabbed
Claus Gittinger <cg@exept.de>
parents:
2252
diff
changeset
|
374 |
|
2179 | 375 |
pos < min ifTrue:[^ min]. |
2252 | 376 |
pos > max ifTrue:[^ max]. |
377 |
^ pos |
|
2159
2864c0de7f33
make certain, that handles can always be clicked on;
Claus Gittinger <cg@exept.de>
parents:
2005
diff
changeset
|
378 |
! |
2864c0de7f33
make certain, that handles can always be clicked on;
Claus Gittinger <cg@exept.de>
parents:
2005
diff
changeset
|
379 |
|
2179 | 380 |
detectHandleIndexAt:x y:y |
381 |
"returns the handle index at position x@y or nil if none detected |
|
382 |
" |
|
383 |
|subViews |
|
384 |
size "{ Class: SmallInteger }"| |
|
385 |
||
386 |
subViews := view subViews. |
|
387 |
||
388 |
(size := subViews size) > 1 ifTrue:[ |
|
389 |
view orientation == #vertical ifTrue:[ |
|
390 |
2 to:size do:[:i| |
|
391 |
(subViews at:i) top >= y ifTrue:[ |
|
392 |
^ (subViews at:(i-1)) bottom < y ifTrue:[i-1] ifFalse:[nil] |
|
393 |
] |
|
394 |
] |
|
395 |
] ifFalse:[ |
|
396 |
2 to:size do:[:i| |
|
397 |
(subViews at:i) left >= x ifTrue:[ |
|
398 |
^ (subViews at:(i-1)) right < x ifTrue:[i-1] ifFalse:[nil] |
|
399 |
] |
|
400 |
] |
|
401 |
] |
|
402 |
]. |
|
403 |
^ nil |
|
404 |
||
405 |
||
406 |
! ! |
|
1871 | 407 |
|
2179 | 408 |
!VariablePanelController methodsFor:'queries'! |
409 |
||
2529 | 410 |
isSnapEntered |
411 |
^ saveCursor notNil |
|
412 |
! |
|
413 |
||
2179 | 414 |
isSnapEntered:anIndex |
415 |
^ saveCursor notNil and:[anIndex == movedHandle] |
|
416 |
||
417 |
! |
|
418 |
||
419 |
isSnapPressed |
|
420 |
^ resizeMode notNil and:[resizeMode ~~ #active] |
|
421 |
! ! |
|
422 |
||
423 |
!VariablePanelController methodsFor:'user operations'! |
|
104 | 424 |
|
2179 | 425 |
doInvertHandle |
426 |
"invert a handle |
|
427 |
" |
|
428 |
|pos| |
|
429 |
||
430 |
pos := prevPos - (view barHeight + 1 // 2). |
|
431 |
view invertHandleBarAtX:pos y:pos. |
|
432 |
! |
|
433 |
||
434 |
doResize |
|
435 |
"perform the resize |
|
436 |
" |
|
437 |
|aboveView belowView aboveIndex belowIndex newRelPos subViews isVertical |
|
5475 | 438 |
newCorner newOrigin halfBarHg aboveInvisible belowInvisible| |
104 | 439 |
|
1871 | 440 |
"undo the last invert" |
2179 | 441 |
(resizeMode == #active and:[opaqueResizing not]) ifTrue:[ |
442 |
self doInvertHandle |
|
1871 | 443 |
]. |
2179 | 444 |
"check if position changed" |
445 |
prevPos == clickPos ifTrue:[^ self]. |
|
104 | 446 |
|
2179 | 447 |
"compute the new relative origins & corners" |
448 |
isVertical := view orientation == #vertical. |
|
1871 | 449 |
aboveIndex := movedHandle. |
450 |
belowIndex := movedHandle + 1. |
|
2179 | 451 |
subViews := view subViews. |
452 |
aboveView := subViews at:aboveIndex. |
|
453 |
belowView := subViews at:belowIndex. |
|
5475 | 454 |
halfBarHg := (view barHeight + 1) // 2. |
455 |
aboveInvisible := belowInvisible := false. |
|
1626
3013631d4384
do nothing if pointer was never moved;
Claus Gittinger <cg@exept.de>
parents:
1483
diff
changeset
|
456 |
|
5475 | 457 |
isVertical ifTrue:[ |
2179 | 458 |
"X complains badly if you try to create/resize a view with a dimension <= 0 |
459 |
" |
|
5475 | 460 |
prevPos - halfBarHg == aboveView top ifTrue:[ |
461 |
prevPos := prevPos + 1. |
|
462 |
aboveInvisible := true. |
|
463 |
]. |
|
464 |
||
465 |
newRelPos := (prevPos / view height) asFloat. |
|
6520 | 466 |
aboveView relativeCorner isNil ifTrue:[ |
467 |
view setupSubviewOrigins. |
|
468 |
thisContext restart. |
|
469 |
]. |
|
5475 | 470 |
newCorner := aboveView relativeCorner x @ newRelPos. |
471 |
newOrigin := belowView relativeOrigin x @ newRelPos. |
|
472 |
] ifFalse:[ |
|
473 |
"X complains badly if you try to create/resize a view with a dimension <= 0 |
|
474 |
" |
|
475 |
prevPos - halfBarHg == aboveView left ifTrue:[ |
|
476 |
prevPos := prevPos + 1. |
|
477 |
aboveInvisible := true. |
|
478 |
]. |
|
104 | 479 |
|
2179 | 480 |
newRelPos := (prevPos / view width) asFloat. |
481 |
newCorner := newRelPos @ aboveView relativeCorner y. |
|
2159
2864c0de7f33
make certain, that handles can always be clicked on;
Claus Gittinger <cg@exept.de>
parents:
2005
diff
changeset
|
482 |
newOrigin := newRelPos @ belowView relativeOrigin y. |
1871 | 483 |
]. |
2179 | 484 |
view lockRedraw. |
485 |
||
1871 | 486 |
aboveView relativeCorner:newCorner. |
487 |
belowView relativeOrigin:newOrigin. |
|
5475 | 488 |
aboveInvisible ifTrue:[ |
489 |
aboveView realized ifTrue:[ aboveView unmap ]. |
|
490 |
] ifFalse:[ |
|
491 |
aboveView realized ifFalse:[ aboveView map ]. |
|
492 |
]. |
|
104 | 493 |
|
2179 | 494 |
prevPos > clickPos ifTrue:[ "above view grows" |
495 |
view resizeSubviewsFrom:aboveIndex to:belowIndex. |
|
104 | 496 |
] ifFalse:[ |
2179 | 497 |
view resizeSubviewsFrom:belowIndex to:aboveIndex |
1871 | 498 |
]. |
499 |
view unlockRedraw. |
|
1626
3013631d4384
do nothing if pointer was never moved;
Claus Gittinger <cg@exept.de>
parents:
1483
diff
changeset
|
500 |
|
2179 | 501 |
prevPos := isVertical ifTrue:[aboveView bottom] ifFalse:[aboveView right]. |
5475 | 502 |
prevPos := prevPos + halfBarHg. |
6520 | 503 |
|
504 |
"Modified: / 01-02-2019 / 20:51:56 / Claus Gittinger" |
|
1483 | 505 |
! |
506 |
||
2236 | 507 |
doSnapPressedX:x y:y |
2179 | 508 |
"perform the snap press |
509 |
" |
|
2236 | 510 |
|layout handle curRCorner prvRCorner isVertical newPos mode isMax isMin doRememberPosition| |
2179 | 511 |
|
512 |
(mode := view snapMode) isNil ifTrue:[^ self]. |
|
513 |
||
514 |
layout := view snapLayoutAt:movedHandle. |
|
515 |
handle := view subViews at:movedHandle. |
|
516 |
isVertical := view orientation == #vertical. |
|
2236 | 517 |
|
2179 | 518 |
curRCorner := handle relativeCorner. |
519 |
prvRCorner := handle objectAttributeAt:#vpext. |
|
520 |
||
2236 | 521 |
isMax := isMin := false. |
522 |
mode == #both ifTrue:[ |
|
523 |
isVertical ifTrue:[ |
|
524 |
isMax := x > (layout right - (layout width//3)). |
|
525 |
isMin := x < (layout left + (layout width//3)). |
|
526 |
] ifFalse:[ |
|
2239 | 527 |
isMin := y > (layout bottom - (layout height//3)). |
528 |
isMax := y < (layout top + (layout height//3)). |
|
2236 | 529 |
]. |
530 |
handle objectAttributeAt:#snapPart put:(isMin ifTrue:[#left] ifFalse:[ isMax ifTrue:[#right] ifFalse:[#middle]]). |
|
531 |
doRememberPosition := (isMin or:[isMax]) and:[prvRCorner isNil]. |
|
532 |
] ifFalse:[ |
|
533 |
isMax := view snapAtIndexWillGrow:movedHandle. |
|
534 |
isMin := isMax not. |
|
535 |
isMax ifTrue:[ |
|
536 |
isMax := prvRCorner isNil or:[mode ~~ #min] |
|
537 |
] ifFalse:[ |
|
538 |
isMin := prvRCorner isNil or:[mode ~~ #max] |
|
539 |
]. |
|
540 |
doRememberPosition := true. |
|
541 |
]. |
|
542 |
||
543 |
isMax ifTrue:[ |
|
544 |
newPos := 99999 "set extent to max" |
|
545 |
] ifFalse:[ |
|
546 |
isMin ifTrue:[ |
|
547 |
newPos := 0 "set extent to min" |
|
548 |
] ifFalse:[ |
|
549 |
newPos := nil "restore previous extent" |
|
550 |
] |
|
2179 | 551 |
]. |
552 |
||
553 |
newPos isNil ifTrue:[ |
|
2236 | 554 |
prvRCorner isNil ifTrue:[ |
555 |
"/ nothing to do |
|
556 |
^ self |
|
557 |
]. |
|
558 |
||
2179 | 559 |
"restore previous extent" |
560 |
newPos := isVertical ifTrue:[view height * prvRCorner y] |
|
561 |
ifFalse:[view width * prvRCorner x]. |
|
562 |
||
563 |
newPos := self checkedHandleMovementX:newPos y:newPos. |
|
564 |
||
565 |
(prevPos - newPos) abs < 2 ifTrue:[ |
|
566 |
"cannot resize; set extent to min or max dependent on the current extent" |
|
567 |
isVertical ifTrue:[ |
|
568 |
newPos := handle height > 2 ifTrue:[0] ifFalse:[99999] |
|
569 |
] ifFalse:[ |
|
570 |
newPos := handle width > 2 ifTrue:[0] ifFalse:[99999] |
|
571 |
]. |
|
572 |
newPos := self checkedHandleMovementX:newPos y:newPos. |
|
573 |
]. |
|
2236 | 574 |
|
575 |
mode == #both ifTrue:[ |
|
576 |
handle objectAttributeAt:#vpext put:nil. "clear previous corner" |
|
577 |
doRememberPosition := false. |
|
578 |
]. |
|
579 |
||
2179 | 580 |
] ifFalse:[ |
581 |
newPos := self checkedHandleMovementX:newPos y:newPos |
|
582 |
]. |
|
583 |
||
584 |
(newPos - prevPos) abs < 2 ifFalse:[ |
|
2236 | 585 |
doRememberPosition ifTrue:[ |
586 |
handle objectAttributeAt:#vpext put:curRCorner. "save previous corner" |
|
587 |
]. |
|
2179 | 588 |
prevPos := newPos. |
589 |
self doResize. |
|
1483 | 590 |
] |
200 | 591 |
! ! |
104 | 592 |
|
203 | 593 |
!VariablePanelController class methodsFor:'documentation'! |
594 |
||
595 |
version |
|
5475 | 596 |
^ '$Header$' |
2179 | 597 |
|
598 |
||
203 | 599 |
! ! |
5475 | 600 |