author | Claus Gittinger <cg@exept.de> |
Sat, 20 Jun 2009 10:47:07 +0200 | |
changeset 3901 | 113dd960ba11 |
parent 2665 | 954415c8fa83 |
child 3921 | f7f8661be48b |
permissions | -rw-r--r-- |
104 | 1 |
" |
2 |
COPYRIGHT (c) 1995 by Claus Gittinger |
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2179 | 3 |
All Rights Reserved |
104 | 4 |
|
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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8 |
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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10 |
hereby transferred. |
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11 |
" |
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||
2179 | 13 |
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"{ 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:'' |
21 |
category:'Interface-Support-Controllers' |
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! |
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||
24 |
!VariablePanelController class methodsFor:'documentation'! |
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||
26 |
copyright |
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27 |
" |
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COPYRIGHT (c) 1995 by Claus Gittinger |
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2179 | 29 |
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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37 |
" |
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|
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! |
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||
150 | 41 |
documentation |
42 |
" |
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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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45 |
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 |
104 | 59 |
"mouse-button was moved while pressed; |
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clear prev handleBar and draw handle bar at new position |
61 |
" |
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|nextPos layout entered hindex handle| |
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64 |
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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69 |
]. |
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70 |
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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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"/ |
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"/ hindex ~~ handle ifTrue:[ |
2529 | 77 |
"/ self pointerLeave:0. |
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"/ handle := hindex. |
2529 | 79 |
"/ ]. |
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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 | 84 |
entered := layout notNil and:[layout containsPointX:bx y:by]. |
104 | 85 |
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2529 | 86 |
entered ~~ (self isSnapEntered) ifTrue:[ |
2179 | 87 |
entered ifTrue:[ |
88 |
saveCursor := view cursor. |
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2239 | 89 |
view cursor:(Cursor hand). |
2179 | 90 |
] ifFalse:[ |
91 |
view cursor:saveCursor. |
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92 |
saveCursor := nil. |
|
93 |
]. |
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view drawSnapAt:handle |
2179 | 95 |
]. |
96 |
^ self |
|
97 |
]. |
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(movedHandle isNil or:[resizeMode isNil]) ifTrue:[^ self]. |
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100 |
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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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clickPos == by ifTrue:[^ self]. |
2510 | 108 |
prevPos == by ifTrue:[^ self]. |
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]. |
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"RESIZING" |
112 |
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113 |
"compute new position ...." |
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||
115 |
nextPos := self checkedHandleMovementX:bx y:by. |
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"/ nextPos = prevPos ifTrue:[ |
117 |
"/ ^ self |
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118 |
"/ ]. |
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||
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resizeMode == #active ifTrue:[ |
121 |
"check position changed ..." |
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"/ nextPos > 10 ifTrue:[ |
123 |
"/ (prevPos - nextPos) abs < 2 ifTrue:[^ self]. |
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124 |
"/ ]. |
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opaqueResizing ifFalse:[ |
126 |
self doInvertHandle "undo the last invert" |
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] |
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128 |
] ifFalse:[ |
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"/ nextPos > 10 ifTrue:[ |
130 |
"/ (clickPos - nextPos) abs < 5 ifTrue:[^ self]. |
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131 |
"/ ]. |
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resizeMode := #active. |
131 | 133 |
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2179 | 134 |
"/ restore the snap cursor |
2529 | 135 |
self isSnapEntered ifTrue:[ |
2179 | 136 |
view grabPointerWithCursor:saveCursor. |
137 |
saveCursor := nil. |
|
138 |
view drawSnapAt:movedHandle. |
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] |
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140 |
]. |
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141 |
prevPos := nextPos. |
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opaqueResizing ifFalse:[ |
144 |
self doInvertHandle. |
|
145 |
] ifTrue:[ |
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146 |
self doResize. |
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147 |
]. |
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"Modified: / 24.8.2001 / 15:34:57 / cg" |
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! |
151 |
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buttonPress:button x:bx y:by |
2179 | 153 |
"button was pressed - setup resizing if a handle is hit |
154 |
" |
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|handleView hindex isMin isMax layout| |
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((button == 1) or:[button == #select]) 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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167 |
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"/ movedHandle notNil ifTrue:[ |
169 |
"/ hindex ~~ movedHandle ifTrue:[self pointerLeave:0]. "restore the cursor" |
|
170 |
"/ ]. |
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( (movedHandle := hindex) notNil |
173 |
and:[(view canChangeExtentOfViewAt:movedHandle)] |
|
174 |
) ifFalse:[ |
|
175 |
^ self |
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176 |
]. |
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view grabPointerWithCursor:(view cursor). |
179 |
handleView := view subViews at:movedHandle. |
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180 |
||
181 |
"setup resizeing" |
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182 |
resizeMode := #init. |
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183 |
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view orientation ~~ #vertical ifTrue:[ |
185 |
clickPos := bx. |
|
186 |
prevPos := handleView right. |
|
187 |
] ifFalse:[ |
|
188 |
clickPos := by. |
|
189 |
prevPos := handleView bottom. |
|
190 |
]. |
|
191 |
prevPos := prevPos + (view barHeight + 1 // 2). |
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192 |
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"/ self pointerEnter:0 x:bx y:by. |
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194 |
|
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195 |
opaqueResizing := self sensor shiftDown or:[UserPreferences current opaqueVariablePanelResizing == true]. |
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196 |
|
2529 | 197 |
self isSnapEntered ifTrue:[ |
2179 | 198 |
"there is a snap under the cursor; redraw selected" |
2236 | 199 |
view snapMode == #both ifTrue:[ |
200 |
layout := view snapLayoutAt:movedHandle. |
|
201 |
view orientation == #vertical ifTrue:[ |
|
202 |
isMax := bx > (layout right - (layout width//3)). |
|
203 |
isMin := bx < (layout left + (layout width//3)). |
|
204 |
] ifFalse:[ |
|
205 |
isMax := by > (layout bottom - (layout height//3)). |
|
206 |
isMin := by < (layout top + (layout height//3)). |
|
207 |
]. |
|
208 |
handleView objectAttributeAt:#snapPart put:(isMin ifTrue:[#left] ifFalse:[ isMax ifTrue:[#right] ifFalse:[#middle]]). |
|
209 |
]. |
|
2529 | 210 |
view drawSnapAt:movedHandle. |
211 |
] ifFalse:[ |
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212 |
opaqueResizing ifFalse:[ |
2529 | 213 |
self doInvertHandle. |
214 |
resizeMode := #active. |
|
215 |
]. |
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216 |
]. |
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|
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"Modified: / 24.8.2001 / 15:35:27 / cg" |
200 | 219 |
! |
220 |
||
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221 |
buttonRelease:button x:bx y:by |
104 | 222 |
"end bar-move" |
223 |
||
2179 | 224 |
|subViews layout aboveView| |
1871 | 225 |
|
2179 | 226 |
((button == 1) or:[button == #select]) ifFalse:[ |
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movedHandle isNil ifTrue:[ |
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228 |
resizeMode := nil. |
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229 |
super buttonRelease:button x:bx y:by |
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230 |
]. |
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231 |
^ self. |
2179 | 232 |
]. |
233 |
||
2510 | 234 |
view compressMotionEvents:false. |
2179 | 235 |
view ungrabPointer. |
236 |
movedHandle isNil ifTrue:[^ self]. |
|
1871 | 237 |
|
2179 | 238 |
resizeMode notNil ifTrue:[ |
239 |
resizeMode == #active ifTrue:[ |
|
2236 | 240 |
(view snapMode == #both) ifFalse:[ |
241 |
aboveView := view subViews at:movedHandle. |
|
242 |
aboveView objectAttributeAt:#vpext put:(aboveView relativeCorner). |
|
243 |
]. |
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244 |
opaqueResizing ifFalse:[ |
2252 | 245 |
self doResize |
246 |
]. |
|
2179 | 247 |
] ifFalse:[ |
248 |
( (layout := view snapLayoutAt:movedHandle) notNil |
|
249 |
and:[layout containsPointX:bx y:by] |
|
250 |
) ifTrue:[ |
|
2236 | 251 |
self doSnapPressedX:bx y:by |
2179 | 252 |
]. |
1871 | 253 |
]. |
2179 | 254 |
]. |
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255 |
movedHandle := nil. |
2179 | 256 |
self pointerLeave:0. |
257 |
self pointerEnter:0 x:bx y:by. "check whether mouse on a handle" |
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258 |
|
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259 |
"Modified: / 24.8.2001 / 15:35:33 / cg" |
1871 | 260 |
! |
261 |
||
2179 | 262 |
pointerEnter:state x:bx y:by |
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263 |
"this could be send by the KDE before a button press event; |
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264 |
test whether the state == 0 |
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265 |
" |
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266 |
|handle| |
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|
267 |
|
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|
268 |
state ~~ 0 ifTrue:[ ^ self ]. |
2179 | 269 |
|
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270 |
view snapMode notNil ifTrue:[ |
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271 |
"/ test whether a handle is under the cursor |
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272 |
handle := self detectHandleIndexAt:bx y:by. |
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273 |
|
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274 |
handle notNil ifTrue:[ |
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275 |
"/ there is a handel; thus we have to setup the cursor... |
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276 |
self buttonMotion:state x:bx y:by |
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277 |
]. |
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278 |
]. |
2179 | 279 |
! |
280 |
||
281 |
pointerLeave:state |
|
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282 |
"this could be send by the KDE before a button press event; |
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283 |
test whether the state == 0 |
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284 |
" |
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|
285 |
state ~~ 0 ifTrue:[ ^ self ]. |
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|
286 |
|
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|
287 |
"/ the view is leave and no button is pressed |
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288 |
"/ restore the cursor and redraw the snap if not nil |
2179 | 289 |
|
290 |
saveCursor notNil ifTrue:[ |
|
291 |
"restore the cursor" |
|
292 |
view cursor:saveCursor. |
|
293 |
saveCursor := nil |
|
294 |
]. |
|
295 |
||
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296 |
resizeMode := nil. |
2179 | 297 |
|
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|
298 |
movedHandle notNil ifTrue:[ |
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|
299 |
view drawSnapAt:movedHandle. |
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300 |
self buttonRelease:1 x:0 y:0. |
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|
301 |
movedHandle := nil. |
2179 | 302 |
]. |
303 |
! ! |
|
304 |
||
305 |
!VariablePanelController methodsFor:'private'! |
|
306 |
||
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|
307 |
checkedHandleMovementX:bx y:by |
2179 | 308 |
"check and return valid position a handle can be placed |
309 |
" |
|
2252 | 310 |
|max min pos subViews halfBarHeight barHeight thisView nextView nextView2| |
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311 |
|
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312 |
subViews := view subViews. |
2252 | 313 |
barHeight := view barHeight. |
2245 | 314 |
"/ halfBarHeight := view barHeight + 1 // 2. |
2252 | 315 |
halfBarHeight := barHeight // 2. |
316 |
||
317 |
thisView := subViews at:movedHandle. |
|
318 |
nextView := subViews at:movedHandle + 1. |
|
319 |
nextView2 := subViews at:movedHandle + 2 ifAbsent:nil. |
|
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|
320 |
|
2179 | 321 |
view orientation == #vertical ifTrue:[ |
2245 | 322 |
pos := by. |
2252 | 323 |
min := thisView top. |
324 |
nextView2 isNil ifTrue:[ |
|
325 |
max := view height. |
|
326 |
] ifFalse:[ |
|
327 |
max := nextView2 top. |
|
328 |
]. |
|
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|
329 |
] ifFalse:[ |
2245 | 330 |
pos := bx. |
2252 | 331 |
min := thisView left. |
332 |
nextView2 isNil ifTrue:[ |
|
333 |
max := view width. |
|
334 |
] ifFalse:[ |
|
335 |
max := nextView2 left. |
|
336 |
]. |
|
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|
337 |
]. |
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|
338 |
|
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|
339 |
min := min + halfBarHeight "- 1". |
2252 | 340 |
barHeight odd ifTrue:[ min := min + 1 ]. |
2260
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|
341 |
movedHandle == 1 ifTrue:[ |
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|
342 |
min := min + view margin |
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|
343 |
]. |
2245 | 344 |
|
345 |
"/ max := max - halfBarHeight. |
|
2252 | 346 |
"/ movedHandle == (subViews size-1) ifTrue:[ |
347 |
"/ max := max - barHeight + 2. |
|
348 |
"/ ] ifFalse:[ |
|
349 |
max := max - halfBarHeight + 1. |
|
350 |
barHeight odd ifTrue:[ max := max - 1 ]. |
|
351 |
"/ ]. |
|
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|
352 |
|
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|
353 |
movedHandle == (subViews size-1) ifTrue:[ |
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|
354 |
max := max - view margin |
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|
355 |
]. |
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|
356 |
|
2179 | 357 |
pos < min ifTrue:[^ min]. |
2252 | 358 |
pos > max ifTrue:[^ max]. |
359 |
^ pos |
|
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|
360 |
! |
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|
361 |
|
2179 | 362 |
detectHandleIndexAt:x y:y |
363 |
"returns the handle index at position x@y or nil if none detected |
|
364 |
" |
|
365 |
|subViews |
|
366 |
size "{ Class: SmallInteger }"| |
|
367 |
||
368 |
subViews := view subViews. |
|
369 |
||
370 |
(size := subViews size) > 1 ifTrue:[ |
|
371 |
view orientation == #vertical ifTrue:[ |
|
372 |
2 to:size do:[:i| |
|
373 |
(subViews at:i) top >= y ifTrue:[ |
|
374 |
^ (subViews at:(i-1)) bottom < y ifTrue:[i-1] ifFalse:[nil] |
|
375 |
] |
|
376 |
] |
|
377 |
] ifFalse:[ |
|
378 |
2 to:size do:[:i| |
|
379 |
(subViews at:i) left >= x ifTrue:[ |
|
380 |
^ (subViews at:(i-1)) right < x ifTrue:[i-1] ifFalse:[nil] |
|
381 |
] |
|
382 |
] |
|
383 |
] |
|
384 |
]. |
|
385 |
^ nil |
|
386 |
||
387 |
||
388 |
! ! |
|
1871 | 389 |
|
2179 | 390 |
!VariablePanelController methodsFor:'queries'! |
391 |
||
2529 | 392 |
isSnapEntered |
393 |
^ saveCursor notNil |
|
394 |
! |
|
395 |
||
2179 | 396 |
isSnapEntered:anIndex |
397 |
^ saveCursor notNil and:[anIndex == movedHandle] |
|
398 |
||
399 |
! |
|
400 |
||
401 |
isSnapPressed |
|
402 |
^ resizeMode notNil and:[resizeMode ~~ #active] |
|
403 |
! ! |
|
404 |
||
405 |
!VariablePanelController methodsFor:'user operations'! |
|
104 | 406 |
|
2179 | 407 |
doInvertHandle |
408 |
"invert a handle |
|
409 |
" |
|
410 |
|pos| |
|
411 |
||
412 |
pos := prevPos - (view barHeight + 1 // 2). |
|
413 |
view invertHandleBarAtX:pos y:pos. |
|
414 |
! |
|
415 |
||
416 |
doResize |
|
417 |
"perform the resize |
|
418 |
" |
|
419 |
|aboveView belowView aboveIndex belowIndex newRelPos subViews isVertical |
|
2582
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|
420 |
newCorner newOrigin halfBarHg| |
104 | 421 |
|
1871 | 422 |
"undo the last invert" |
2179 | 423 |
(resizeMode == #active and:[opaqueResizing not]) ifTrue:[ |
424 |
self doInvertHandle |
|
1871 | 425 |
]. |
2179 | 426 |
"check if position changed" |
427 |
prevPos == clickPos ifTrue:[^ self]. |
|
104 | 428 |
|
2179 | 429 |
"compute the new relative origins & corners" |
430 |
isVertical := view orientation == #vertical. |
|
1871 | 431 |
aboveIndex := movedHandle. |
432 |
belowIndex := movedHandle + 1. |
|
2179 | 433 |
subViews := view subViews. |
434 |
aboveView := subViews at:aboveIndex. |
|
435 |
belowView := subViews at:belowIndex. |
|
436 |
halfBarHg := view barHeight + 1 // 2. |
|
1626
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|
437 |
|
2179 | 438 |
isVertical ifFalse:[ |
439 |
"X complains badly if you try to create/resize a view with a dimension <= 0 |
|
440 |
" |
|
441 |
prevPos - halfBarHg == aboveView left ifTrue:[prevPos := prevPos + 1]. |
|
104 | 442 |
|
2179 | 443 |
newRelPos := (prevPos / view width) asFloat. |
444 |
newCorner := newRelPos @ aboveView relativeCorner y. |
|
2159
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changeset
|
445 |
newOrigin := newRelPos @ belowView relativeOrigin y. |
2179 | 446 |
] ifTrue:[ |
447 |
"X complains badly if you try to create/resize a view with a dimension <= 0 |
|
448 |
" |
|
449 |
prevPos - halfBarHg == aboveView top ifTrue:[prevPos := prevPos + 1]. |
|
450 |
||
451 |
newRelPos := (prevPos / view height) asFloat. |
|
452 |
newCorner := aboveView relativeCorner x @ newRelPos. |
|
2159
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changeset
|
453 |
newOrigin := belowView relativeOrigin x @ newRelPos. |
1871 | 454 |
]. |
2179 | 455 |
view lockRedraw. |
456 |
||
1871 | 457 |
aboveView relativeCorner:newCorner. |
458 |
belowView relativeOrigin:newOrigin. |
|
104 | 459 |
|
2179 | 460 |
prevPos > clickPos ifTrue:[ "above view grows" |
461 |
view resizeSubviewsFrom:aboveIndex to:belowIndex. |
|
104 | 462 |
] ifFalse:[ |
2179 | 463 |
view resizeSubviewsFrom:belowIndex to:aboveIndex |
1871 | 464 |
]. |
465 |
view unlockRedraw. |
|
1626
3013631d4384
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changeset
|
466 |
|
2179 | 467 |
prevPos := isVertical ifTrue:[aboveView bottom] ifFalse:[aboveView right]. |
468 |
prevPos := prevPos + (view barHeight + 1 // 2). |
|
1483 | 469 |
! |
470 |
||
2236 | 471 |
doSnapPressedX:x y:y |
2179 | 472 |
"perform the snap press |
473 |
" |
|
2236 | 474 |
|layout handle curRCorner prvRCorner isVertical newPos mode isMax isMin doRememberPosition| |
2179 | 475 |
|
476 |
(mode := view snapMode) isNil ifTrue:[^ self]. |
|
477 |
||
478 |
layout := view snapLayoutAt:movedHandle. |
|
479 |
handle := view subViews at:movedHandle. |
|
480 |
isVertical := view orientation == #vertical. |
|
2236 | 481 |
|
2179 | 482 |
curRCorner := handle relativeCorner. |
483 |
prvRCorner := handle objectAttributeAt:#vpext. |
|
484 |
||
2236 | 485 |
isMax := isMin := false. |
486 |
mode == #both ifTrue:[ |
|
487 |
isVertical ifTrue:[ |
|
488 |
isMax := x > (layout right - (layout width//3)). |
|
489 |
isMin := x < (layout left + (layout width//3)). |
|
490 |
] ifFalse:[ |
|
2239 | 491 |
isMin := y > (layout bottom - (layout height//3)). |
492 |
isMax := y < (layout top + (layout height//3)). |
|
2236 | 493 |
]. |
494 |
handle objectAttributeAt:#snapPart put:(isMin ifTrue:[#left] ifFalse:[ isMax ifTrue:[#right] ifFalse:[#middle]]). |
|
495 |
doRememberPosition := (isMin or:[isMax]) and:[prvRCorner isNil]. |
|
496 |
] ifFalse:[ |
|
497 |
isMax := view snapAtIndexWillGrow:movedHandle. |
|
498 |
isMin := isMax not. |
|
499 |
isMax ifTrue:[ |
|
500 |
isMax := prvRCorner isNil or:[mode ~~ #min] |
|
501 |
] ifFalse:[ |
|
502 |
isMin := prvRCorner isNil or:[mode ~~ #max] |
|
503 |
]. |
|
504 |
doRememberPosition := true. |
|
505 |
]. |
|
506 |
||
507 |
isMax ifTrue:[ |
|
508 |
newPos := 99999 "set extent to max" |
|
509 |
] ifFalse:[ |
|
510 |
isMin ifTrue:[ |
|
511 |
newPos := 0 "set extent to min" |
|
512 |
] ifFalse:[ |
|
513 |
newPos := nil "restore previous extent" |
|
514 |
] |
|
2179 | 515 |
]. |
516 |
||
517 |
newPos isNil ifTrue:[ |
|
2236 | 518 |
prvRCorner isNil ifTrue:[ |
519 |
"/ nothing to do |
|
520 |
^ self |
|
521 |
]. |
|
522 |
||
2179 | 523 |
"restore previous extent" |
524 |
newPos := isVertical ifTrue:[view height * prvRCorner y] |
|
525 |
ifFalse:[view width * prvRCorner x]. |
|
526 |
||
527 |
newPos := self checkedHandleMovementX:newPos y:newPos. |
|
528 |
||
529 |
(prevPos - newPos) abs < 2 ifTrue:[ |
|
530 |
"cannot resize; set extent to min or max dependent on the current extent" |
|
531 |
isVertical ifTrue:[ |
|
532 |
newPos := handle height > 2 ifTrue:[0] ifFalse:[99999] |
|
533 |
] ifFalse:[ |
|
534 |
newPos := handle width > 2 ifTrue:[0] ifFalse:[99999] |
|
535 |
]. |
|
536 |
newPos := self checkedHandleMovementX:newPos y:newPos. |
|
537 |
]. |
|
2236 | 538 |
|
539 |
mode == #both ifTrue:[ |
|
540 |
handle objectAttributeAt:#vpext put:nil. "clear previous corner" |
|
541 |
doRememberPosition := false. |
|
542 |
]. |
|
543 |
||
2179 | 544 |
] ifFalse:[ |
545 |
newPos := self checkedHandleMovementX:newPos y:newPos |
|
546 |
]. |
|
547 |
||
548 |
(newPos - prevPos) abs < 2 ifFalse:[ |
|
2236 | 549 |
doRememberPosition ifTrue:[ |
550 |
handle objectAttributeAt:#vpext put:curRCorner. "save previous corner" |
|
551 |
]. |
|
2179 | 552 |
prevPos := newPos. |
553 |
self doResize. |
|
1483 | 554 |
] |
200 | 555 |
! ! |
104 | 556 |
|
203 | 557 |
!VariablePanelController class methodsFor:'documentation'! |
558 |
||
559 |
version |
|
2665
954415c8fa83
bug fix in #pointerLeave: the KDE sends a #pointerLeave: with each button press which should be discard
ca
parents:
2652
diff
changeset
|
560 |
^ '$Header: /cvs/stx/stx/libwidg/VariablePanelController.st,v 1.40 2002-11-18 07:24:54 ca Exp $' |
2179 | 561 |
|
562 |
||
203 | 563 |
! ! |