author | Claus Gittinger <cg@exept.de> |
Tue, 01 Jul 2014 12:57:27 +0200 | |
changeset 5081 | 64ecf2a36648 |
parent 3921 | f7f8661be48b |
child 5475 | f7082f92390c |
permissions | -rw-r--r-- |
104 | 1 |
" |
2 |
COPYRIGHT (c) 1995 by Claus Gittinger |
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2179 | 3 |
All Rights Reserved |
104 | 4 |
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5 |
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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7 |
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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2223 | 12 |
"{ Package: 'stx:libwidg' }" |
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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:'' |
19 |
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 | 28 |
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29 |
This software is furnished under a license and may be used |
|
30 |
only in accordance with the terms of that license and with the |
|
31 |
inclusion of the above copyright notice. This software may not |
|
32 |
be provided or otherwise made available to, or used by, any |
|
33 |
other person. No title to or ownership of the software is |
|
34 |
hereby transferred. |
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" |
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! |
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||
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documentation |
40 |
" |
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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'! |
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||
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buttonMotion:state x:bx y:by |
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"mouse-button was moved while pressed; |
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clear prev handleBar and draw handle bar at new position |
59 |
" |
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|nextPos layout entered hindex 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 | 70 |
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handle := self detectHandleIndexAt:bx y:by. |
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handle isNil ifTrue:[^ self]. |
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"/ |
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"/ hindex ~~ handle ifTrue:[ |
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"/ self pointerLeave:0. |
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"/ handle := hindex. |
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"/ ]. |
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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 | 82 |
entered := layout notNil and:[layout containsPointX:bx y:by]. |
104 | 83 |
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entered ~~ (self isSnapEntered) ifTrue:[ |
2179 | 85 |
entered ifTrue:[ |
86 |
saveCursor := view cursor. |
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view cursor:(Cursor hand). |
2179 | 88 |
] ifFalse:[ |
89 |
view cursor:saveCursor. |
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saveCursor := nil. |
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]. |
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view drawSnapAt:handle |
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]. |
94 |
^ self |
|
95 |
]. |
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(movedHandle isNil or:[resizeMode isNil]) ifTrue:[^ self]. |
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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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] ifFalse:[ |
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105 |
clickPos == by ifTrue:[^ self]. |
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prevPos == by ifTrue:[^ self]. |
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]. |
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"RESIZING" |
110 |
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111 |
"compute new position ...." |
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113 |
nextPos := self checkedHandleMovementX:bx y:by. |
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"/ nextPos = prevPos ifTrue:[ |
115 |
"/ ^ self |
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"/ ]. |
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||
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resizeMode == #active ifTrue:[ |
119 |
"check position changed ..." |
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"/ nextPos > 10 ifTrue:[ |
121 |
"/ (prevPos - nextPos) abs < 2 ifTrue:[^ self]. |
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122 |
"/ ]. |
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opaqueResizing ifFalse:[ |
124 |
self doInvertHandle "undo the last invert" |
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] |
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] ifFalse:[ |
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"/ nextPos > 10 ifTrue:[ |
128 |
"/ (clickPos - nextPos) abs < 5 ifTrue:[^ self]. |
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129 |
"/ ]. |
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resizeMode := #active. |
131 | 131 |
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"/ restore the snap cursor |
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self isSnapEntered ifTrue:[ |
2179 | 134 |
view grabPointerWithCursor:saveCursor. |
135 |
saveCursor := nil. |
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136 |
view drawSnapAt:movedHandle. |
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] |
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]. |
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prevPos := nextPos. |
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opaqueResizing ifFalse:[ |
142 |
self doInvertHandle. |
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143 |
] ifTrue:[ |
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144 |
self doResize. |
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]. |
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"Modified: / 24.8.2001 / 15:34:57 / cg" |
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! |
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buttonPress:button x:bx y:by |
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"button was pressed - setup resizing if a handle is hit |
152 |
" |
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|handleView hindex isMin isMax layout| |
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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:[ |
167 |
"/ hindex ~~ movedHandle ifTrue:[self pointerLeave:0]. "restore the cursor" |
|
168 |
"/ ]. |
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( (movedHandle := hindex) notNil |
171 |
and:[(view canChangeExtentOfViewAt:movedHandle)] |
|
172 |
) ifFalse:[ |
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173 |
^ self |
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]. |
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view grabPointerWithCursor:(view cursor). |
177 |
handleView := view subViews at:movedHandle. |
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179 |
"setup resizeing" |
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resizeMode := #init. |
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view orientation ~~ #vertical ifTrue:[ |
183 |
clickPos := bx. |
|
184 |
prevPos := handleView right. |
|
185 |
] ifFalse:[ |
|
186 |
clickPos := by. |
|
187 |
prevPos := handleView bottom. |
|
188 |
]. |
|
189 |
prevPos := prevPos + (view barHeight + 1 // 2). |
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"/ self pointerEnter:0 x:bx y:by. |
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|
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193 |
opaqueResizing := self sensor shiftDown or:[UserPreferences current opaqueVariablePanelResizing == true]. |
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194 |
|
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self isSnapEntered ifTrue:[ |
2179 | 196 |
"there is a snap under the cursor; redraw selected" |
2236 | 197 |
view snapMode == #both ifTrue:[ |
198 |
layout := view snapLayoutAt:movedHandle. |
|
199 |
view orientation == #vertical ifTrue:[ |
|
200 |
isMax := bx > (layout right - (layout width//3)). |
|
201 |
isMin := bx < (layout left + (layout width//3)). |
|
202 |
] ifFalse:[ |
|
203 |
isMax := by > (layout bottom - (layout height//3)). |
|
204 |
isMin := by < (layout top + (layout height//3)). |
|
205 |
]. |
|
206 |
handleView objectAttributeAt:#snapPart put:(isMin ifTrue:[#left] ifFalse:[ isMax ifTrue:[#right] ifFalse:[#middle]]). |
|
207 |
]. |
|
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view drawSnapAt:movedHandle. |
209 |
] ifFalse:[ |
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210 |
opaqueResizing ifFalse:[ |
2529 | 211 |
self doInvertHandle. |
212 |
resizeMode := #active. |
|
213 |
]. |
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2512
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invert on click (not on first move)
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214 |
]. |
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|
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"Modified: / 24.8.2001 / 15:35:27 / cg" |
200 | 217 |
! |
218 |
||
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219 |
buttonRelease:button x:bx y:by |
104 | 220 |
"end bar-move" |
221 |
||
3921 | 222 |
|layout aboveView| |
1871 | 223 |
|
3921 | 224 |
(button == 1) ifFalse:[ |
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225 |
movedHandle isNil ifTrue:[ |
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226 |
resizeMode := nil. |
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227 |
super buttonRelease:button x:bx y:by |
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228 |
]. |
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229 |
^ self. |
2179 | 230 |
]. |
231 |
||
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view compressMotionEvents:false. |
2179 | 233 |
view ungrabPointer. |
234 |
movedHandle isNil ifTrue:[^ self]. |
|
1871 | 235 |
|
2179 | 236 |
resizeMode notNil ifTrue:[ |
237 |
resizeMode == #active ifTrue:[ |
|
2236 | 238 |
(view snapMode == #both) ifFalse:[ |
239 |
aboveView := view subViews at:movedHandle. |
|
240 |
aboveView objectAttributeAt:#vpext put:(aboveView relativeCorner). |
|
241 |
]. |
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242 |
opaqueResizing ifFalse:[ |
2252 | 243 |
self doResize |
244 |
]. |
|
2179 | 245 |
] ifFalse:[ |
246 |
( (layout := view snapLayoutAt:movedHandle) notNil |
|
247 |
and:[layout containsPointX:bx y:by] |
|
248 |
) ifTrue:[ |
|
2236 | 249 |
self doSnapPressedX:bx y:by |
2179 | 250 |
]. |
1871 | 251 |
]. |
2179 | 252 |
]. |
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253 |
movedHandle := nil. |
2179 | 254 |
self pointerLeave:0. |
255 |
self pointerEnter:0 x:bx y:by. "check whether mouse on a handle" |
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256 |
|
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257 |
"Modified: / 24.8.2001 / 15:35:33 / cg" |
1871 | 258 |
! |
259 |
||
2179 | 260 |
pointerEnter:state x:bx y:by |
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261 |
"this could be send by the KDE before a button press event; |
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262 |
test whether the state == 0 |
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263 |
" |
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|
264 |
|handle| |
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265 |
|
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266 |
state ~~ 0 ifTrue:[ ^ self ]. |
2179 | 267 |
|
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268 |
view snapMode notNil ifTrue:[ |
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269 |
"/ test whether a handle is under the cursor |
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270 |
handle := self detectHandleIndexAt:bx y:by. |
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271 |
|
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272 |
handle notNil ifTrue:[ |
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273 |
"/ there is a handel; thus we have to setup the cursor... |
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274 |
self buttonMotion:state x:bx y:by |
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|
275 |
]. |
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|
276 |
]. |
2179 | 277 |
! |
278 |
||
279 |
pointerLeave:state |
|
2665
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|
280 |
"this could be send by the KDE before a button press event; |
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|
281 |
test whether the state == 0 |
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|
282 |
" |
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|
283 |
state ~~ 0 ifTrue:[ ^ self ]. |
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|
284 |
|
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|
285 |
"/ the view is leave and no button is pressed |
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|
286 |
"/ restore the cursor and redraw the snap if not nil |
2179 | 287 |
|
288 |
saveCursor notNil ifTrue:[ |
|
289 |
"restore the cursor" |
|
290 |
view cursor:saveCursor. |
|
291 |
saveCursor := nil |
|
292 |
]. |
|
293 |
||
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|
294 |
resizeMode := nil. |
2179 | 295 |
|
2665
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|
296 |
movedHandle notNil ifTrue:[ |
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|
297 |
view drawSnapAt:movedHandle. |
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298 |
self buttonRelease:1 x:0 y:0. |
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|
299 |
movedHandle := nil. |
2179 | 300 |
]. |
301 |
! ! |
|
302 |
||
303 |
!VariablePanelController methodsFor:'private'! |
|
304 |
||
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|
305 |
checkedHandleMovementX:bx y:by |
2179 | 306 |
"check and return valid position a handle can be placed |
307 |
" |
|
2252 | 308 |
|max min pos subViews halfBarHeight barHeight thisView nextView nextView2| |
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|
309 |
|
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|
310 |
subViews := view subViews. |
2252 | 311 |
barHeight := view barHeight. |
2245 | 312 |
"/ halfBarHeight := view barHeight + 1 // 2. |
2252 | 313 |
halfBarHeight := barHeight // 2. |
314 |
||
315 |
thisView := subViews at:movedHandle. |
|
316 |
nextView := subViews at:movedHandle + 1. |
|
317 |
nextView2 := subViews at:movedHandle + 2 ifAbsent:nil. |
|
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|
318 |
|
2179 | 319 |
view orientation == #vertical ifTrue:[ |
2245 | 320 |
pos := by. |
2252 | 321 |
min := thisView top. |
322 |
nextView2 isNil ifTrue:[ |
|
323 |
max := view height. |
|
324 |
] ifFalse:[ |
|
325 |
max := nextView2 top. |
|
326 |
]. |
|
2159
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|
327 |
] ifFalse:[ |
2245 | 328 |
pos := bx. |
2252 | 329 |
min := thisView left. |
330 |
nextView2 isNil ifTrue:[ |
|
331 |
max := view width. |
|
332 |
] ifFalse:[ |
|
333 |
max := nextView2 left. |
|
334 |
]. |
|
2159
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|
335 |
]. |
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changeset
|
336 |
|
2260
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|
337 |
min := min + halfBarHeight "- 1". |
2252 | 338 |
barHeight odd ifTrue:[ min := min + 1 ]. |
2260
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|
339 |
movedHandle == 1 ifTrue:[ |
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|
340 |
min := min + view margin |
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|
341 |
]. |
2245 | 342 |
|
343 |
"/ max := max - halfBarHeight. |
|
2252 | 344 |
"/ movedHandle == (subViews size-1) ifTrue:[ |
345 |
"/ max := max - barHeight + 2. |
|
346 |
"/ ] ifFalse:[ |
|
347 |
max := max - halfBarHeight + 1. |
|
348 |
barHeight odd ifTrue:[ max := max - 1 ]. |
|
349 |
"/ ]. |
|
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|
350 |
|
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|
351 |
movedHandle == (subViews size-1) ifTrue:[ |
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|
352 |
max := max - view margin |
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|
353 |
]. |
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|
354 |
|
2179 | 355 |
pos < min ifTrue:[^ min]. |
2252 | 356 |
pos > max ifTrue:[^ max]. |
357 |
^ pos |
|
2159
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|
358 |
! |
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diff
changeset
|
359 |
|
2179 | 360 |
detectHandleIndexAt:x y:y |
361 |
"returns the handle index at position x@y or nil if none detected |
|
362 |
" |
|
363 |
|subViews |
|
364 |
size "{ Class: SmallInteger }"| |
|
365 |
||
366 |
subViews := view subViews. |
|
367 |
||
368 |
(size := subViews size) > 1 ifTrue:[ |
|
369 |
view orientation == #vertical ifTrue:[ |
|
370 |
2 to:size do:[:i| |
|
371 |
(subViews at:i) top >= y ifTrue:[ |
|
372 |
^ (subViews at:(i-1)) bottom < y ifTrue:[i-1] ifFalse:[nil] |
|
373 |
] |
|
374 |
] |
|
375 |
] ifFalse:[ |
|
376 |
2 to:size do:[:i| |
|
377 |
(subViews at:i) left >= x ifTrue:[ |
|
378 |
^ (subViews at:(i-1)) right < x ifTrue:[i-1] ifFalse:[nil] |
|
379 |
] |
|
380 |
] |
|
381 |
] |
|
382 |
]. |
|
383 |
^ nil |
|
384 |
||
385 |
||
386 |
! ! |
|
1871 | 387 |
|
2179 | 388 |
!VariablePanelController methodsFor:'queries'! |
389 |
||
2529 | 390 |
isSnapEntered |
391 |
^ saveCursor notNil |
|
392 |
! |
|
393 |
||
2179 | 394 |
isSnapEntered:anIndex |
395 |
^ saveCursor notNil and:[anIndex == movedHandle] |
|
396 |
||
397 |
! |
|
398 |
||
399 |
isSnapPressed |
|
400 |
^ resizeMode notNil and:[resizeMode ~~ #active] |
|
401 |
! ! |
|
402 |
||
403 |
!VariablePanelController methodsFor:'user operations'! |
|
104 | 404 |
|
2179 | 405 |
doInvertHandle |
406 |
"invert a handle |
|
407 |
" |
|
408 |
|pos| |
|
409 |
||
410 |
pos := prevPos - (view barHeight + 1 // 2). |
|
411 |
view invertHandleBarAtX:pos y:pos. |
|
412 |
! |
|
413 |
||
414 |
doResize |
|
415 |
"perform the resize |
|
416 |
" |
|
417 |
|aboveView belowView aboveIndex belowIndex newRelPos subViews isVertical |
|
2582
edd71c89378d
opaqueResize if shift is pressed
Claus Gittinger <cg@exept.de>
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diff
changeset
|
418 |
newCorner newOrigin halfBarHg| |
104 | 419 |
|
1871 | 420 |
"undo the last invert" |
2179 | 421 |
(resizeMode == #active and:[opaqueResizing not]) ifTrue:[ |
422 |
self doInvertHandle |
|
1871 | 423 |
]. |
2179 | 424 |
"check if position changed" |
425 |
prevPos == clickPos ifTrue:[^ self]. |
|
104 | 426 |
|
2179 | 427 |
"compute the new relative origins & corners" |
428 |
isVertical := view orientation == #vertical. |
|
1871 | 429 |
aboveIndex := movedHandle. |
430 |
belowIndex := movedHandle + 1. |
|
2179 | 431 |
subViews := view subViews. |
432 |
aboveView := subViews at:aboveIndex. |
|
433 |
belowView := subViews at:belowIndex. |
|
434 |
halfBarHg := view barHeight + 1 // 2. |
|
1626
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Claus Gittinger <cg@exept.de>
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changeset
|
435 |
|
2179 | 436 |
isVertical ifFalse:[ |
437 |
"X complains badly if you try to create/resize a view with a dimension <= 0 |
|
438 |
" |
|
439 |
prevPos - halfBarHg == aboveView left ifTrue:[prevPos := prevPos + 1]. |
|
104 | 440 |
|
2179 | 441 |
newRelPos := (prevPos / view width) asFloat. |
442 |
newCorner := newRelPos @ aboveView relativeCorner y. |
|
2159
2864c0de7f33
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diff
changeset
|
443 |
newOrigin := newRelPos @ belowView relativeOrigin y. |
2179 | 444 |
] ifTrue:[ |
445 |
"X complains badly if you try to create/resize a view with a dimension <= 0 |
|
446 |
" |
|
447 |
prevPos - halfBarHg == aboveView top ifTrue:[prevPos := prevPos + 1]. |
|
448 |
||
449 |
newRelPos := (prevPos / view height) asFloat. |
|
450 |
newCorner := aboveView relativeCorner x @ newRelPos. |
|
2159
2864c0de7f33
make certain, that handles can always be clicked on;
Claus Gittinger <cg@exept.de>
parents:
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diff
changeset
|
451 |
newOrigin := belowView relativeOrigin x @ newRelPos. |
1871 | 452 |
]. |
2179 | 453 |
view lockRedraw. |
454 |
||
1871 | 455 |
aboveView relativeCorner:newCorner. |
456 |
belowView relativeOrigin:newOrigin. |
|
104 | 457 |
|
2179 | 458 |
prevPos > clickPos ifTrue:[ "above view grows" |
459 |
view resizeSubviewsFrom:aboveIndex to:belowIndex. |
|
104 | 460 |
] ifFalse:[ |
2179 | 461 |
view resizeSubviewsFrom:belowIndex to:aboveIndex |
1871 | 462 |
]. |
463 |
view unlockRedraw. |
|
1626
3013631d4384
do nothing if pointer was never moved;
Claus Gittinger <cg@exept.de>
parents:
1483
diff
changeset
|
464 |
|
2179 | 465 |
prevPos := isVertical ifTrue:[aboveView bottom] ifFalse:[aboveView right]. |
466 |
prevPos := prevPos + (view barHeight + 1 // 2). |
|
1483 | 467 |
! |
468 |
||
2236 | 469 |
doSnapPressedX:x y:y |
2179 | 470 |
"perform the snap press |
471 |
" |
|
2236 | 472 |
|layout handle curRCorner prvRCorner isVertical newPos mode isMax isMin doRememberPosition| |
2179 | 473 |
|
474 |
(mode := view snapMode) isNil ifTrue:[^ self]. |
|
475 |
||
476 |
layout := view snapLayoutAt:movedHandle. |
|
477 |
handle := view subViews at:movedHandle. |
|
478 |
isVertical := view orientation == #vertical. |
|
2236 | 479 |
|
2179 | 480 |
curRCorner := handle relativeCorner. |
481 |
prvRCorner := handle objectAttributeAt:#vpext. |
|
482 |
||
2236 | 483 |
isMax := isMin := false. |
484 |
mode == #both ifTrue:[ |
|
485 |
isVertical ifTrue:[ |
|
486 |
isMax := x > (layout right - (layout width//3)). |
|
487 |
isMin := x < (layout left + (layout width//3)). |
|
488 |
] ifFalse:[ |
|
2239 | 489 |
isMin := y > (layout bottom - (layout height//3)). |
490 |
isMax := y < (layout top + (layout height//3)). |
|
2236 | 491 |
]. |
492 |
handle objectAttributeAt:#snapPart put:(isMin ifTrue:[#left] ifFalse:[ isMax ifTrue:[#right] ifFalse:[#middle]]). |
|
493 |
doRememberPosition := (isMin or:[isMax]) and:[prvRCorner isNil]. |
|
494 |
] ifFalse:[ |
|
495 |
isMax := view snapAtIndexWillGrow:movedHandle. |
|
496 |
isMin := isMax not. |
|
497 |
isMax ifTrue:[ |
|
498 |
isMax := prvRCorner isNil or:[mode ~~ #min] |
|
499 |
] ifFalse:[ |
|
500 |
isMin := prvRCorner isNil or:[mode ~~ #max] |
|
501 |
]. |
|
502 |
doRememberPosition := true. |
|
503 |
]. |
|
504 |
||
505 |
isMax ifTrue:[ |
|
506 |
newPos := 99999 "set extent to max" |
|
507 |
] ifFalse:[ |
|
508 |
isMin ifTrue:[ |
|
509 |
newPos := 0 "set extent to min" |
|
510 |
] ifFalse:[ |
|
511 |
newPos := nil "restore previous extent" |
|
512 |
] |
|
2179 | 513 |
]. |
514 |
||
515 |
newPos isNil ifTrue:[ |
|
2236 | 516 |
prvRCorner isNil ifTrue:[ |
517 |
"/ nothing to do |
|
518 |
^ self |
|
519 |
]. |
|
520 |
||
2179 | 521 |
"restore previous extent" |
522 |
newPos := isVertical ifTrue:[view height * prvRCorner y] |
|
523 |
ifFalse:[view width * prvRCorner x]. |
|
524 |
||
525 |
newPos := self checkedHandleMovementX:newPos y:newPos. |
|
526 |
||
527 |
(prevPos - newPos) abs < 2 ifTrue:[ |
|
528 |
"cannot resize; set extent to min or max dependent on the current extent" |
|
529 |
isVertical ifTrue:[ |
|
530 |
newPos := handle height > 2 ifTrue:[0] ifFalse:[99999] |
|
531 |
] ifFalse:[ |
|
532 |
newPos := handle width > 2 ifTrue:[0] ifFalse:[99999] |
|
533 |
]. |
|
534 |
newPos := self checkedHandleMovementX:newPos y:newPos. |
|
535 |
]. |
|
2236 | 536 |
|
537 |
mode == #both ifTrue:[ |
|
538 |
handle objectAttributeAt:#vpext put:nil. "clear previous corner" |
|
539 |
doRememberPosition := false. |
|
540 |
]. |
|
541 |
||
2179 | 542 |
] ifFalse:[ |
543 |
newPos := self checkedHandleMovementX:newPos y:newPos |
|
544 |
]. |
|
545 |
||
546 |
(newPos - prevPos) abs < 2 ifFalse:[ |
|
2236 | 547 |
doRememberPosition ifTrue:[ |
548 |
handle objectAttributeAt:#vpext put:curRCorner. "save previous corner" |
|
549 |
]. |
|
2179 | 550 |
prevPos := newPos. |
551 |
self doResize. |
|
1483 | 552 |
] |
200 | 553 |
! ! |
104 | 554 |
|
203 | 555 |
!VariablePanelController class methodsFor:'documentation'! |
556 |
||
557 |
version |
|
3921 | 558 |
^ '$Header: /cvs/stx/stx/libwidg/VariablePanelController.st,v 1.41 2009-09-15 21:18:05 cg Exp $' |
2179 | 559 |
|
560 |
||
203 | 561 |
! ! |