author | Claus Gittinger <cg@exept.de> |
Mon, 09 Nov 1998 21:29:38 +0100 | |
changeset 1715 | bcfd36598c4b |
parent 1626 | 3013631d4384 |
child 1720 | 896886032334 |
permissions | -rw-r--r-- |
104 | 1 |
" |
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COPYRIGHT (c) 1995 by Claus Gittinger |
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All Rights Reserved |
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||
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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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Controller subclass:#VariablePanelController |
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instanceVariableNames:'movedHandle prevPos startPos clickPos' |
582 | 15 |
classVariableNames:'' |
16 |
poolDictionaries:'' |
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category:'Interface-Support-Controllers' |
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104 | 18 |
! |
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!VariablePanelController class methodsFor:'documentation'! |
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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 |
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||
27 |
This software is furnished under a license and may be used |
|
28 |
only in accordance with the terms of that license and with the |
|
29 |
inclusion of the above copyright notice. This software may not |
|
30 |
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 |
|
32 |
hereby transferred. |
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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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582 | 43 |
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[author:] |
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Claus Gittinger |
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150 | 46 |
" |
104 | 47 |
! ! |
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!VariablePanelController methodsFor:'event handling'! |
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||
161 | 51 |
buttonMotion:state x:bx y:by |
104 | 52 |
"mouse-button was moved while pressed; |
53 |
clear prev handleBar and draw handle bar at new position" |
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||
131 | 55 |
|pos limitMin limitMax subViews barHeight |
56 |
oldHx oldHy newHx newHy| |
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movedHandle isNil ifTrue: [^ self]. "should not happen" |
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"speedup - if there is already another movement, |
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ignore thisone ... " |
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view buttonMotionEventPending ifTrue:[^ self]. |
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subViews := view subViews. |
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barHeight := view barHeight. |
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view orientation ~~ #vertical ifTrue:[ |
104 | 69 |
pos := bx - startPos. |
70 |
" |
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the two lines below will not allow resizing down to zero |
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(so that some is always visible) |
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" |
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"/ limitMin := barHeight // 2. |
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"/ limitMax := view width - barHeight. |
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" |
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these allow resizing to zero - which is better ? |
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" |
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limitMin := 0. |
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limitMax := view innerWidth. |
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movedHandle > 1 ifTrue:[ |
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limitMin := (subViews at:movedHandle) origin x + (barHeight // 2) |
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]. |
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movedHandle < (subViews size - 1) ifTrue:[ |
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limitMax := (subViews at:(movedHandle + 2)) origin x - barHeight |
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]. |
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] ifFalse:[ |
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pos := by - startPos. |
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" |
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the two lines below will not allow resizing down to zero |
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(so that some is always visible) |
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" |
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"/ limitMin := barHeight // 2. |
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"/ limitMax := view height - barHeight. |
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" |
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these allow resizing to zero - which is better ? |
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" |
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limitMin := 0. |
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limitMax := view innerHeight. |
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movedHandle > 1 ifTrue:[ |
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limitMin := (subViews at:movedHandle) origin y + (barHeight // 2) |
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]. |
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movedHandle < (subViews size - 1) ifTrue:[ |
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limitMax := (subViews at:(movedHandle + 2)) origin y - barHeight |
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]. |
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]. |
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limitMax := limitMax - barHeight. |
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(pos < limitMin) ifTrue:[ "check against view limits" |
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pos := limitMin |
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] ifFalse:[ |
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(pos > limitMax) ifTrue:[ |
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pos := limitMax |
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] |
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]. |
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prevPos == pos ifTrue:[^ self]. |
0d9e67bdfbe4
check for any change before moving handle (tiny optimization)
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check for any change before moving handle (tiny optimization)
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view orientation ~~ #vertical ifTrue:[ |
131 | 122 |
oldHx := prevPos. |
123 |
newHx := pos. |
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oldHy := newHy := 0. |
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104 | 125 |
] ifFalse:[ |
131 | 126 |
oldHy := prevPos. |
127 |
newHy := pos. |
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oldHx := newHx := 0. |
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104 | 129 |
]. |
131 | 130 |
view invertHandleBarAtX:oldHx y:oldHy. |
131 |
view invertHandleBarAtX:newHx y:newHy. |
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||
104 | 133 |
prevPos := pos |
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! |
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200 | 136 |
buttonPress:button x:bx y:by |
137 |
"button was pressed - if it hits a handle, start move" |
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|handle barHeight group isHorizontal| |
200 | 140 |
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((button == 1) or:[button == #select]) ifTrue:[ |
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handle := 1. |
143 |
barHeight := view barHeight. |
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200 | 144 |
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isHorizontal := view orientation ~~ #vertical. |
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" |
148 |
search the handle, invert the first time |
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" |
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150 |
view handleOriginsWithIndexDo:[:hPoint :hIndex | |
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|hx hy thatsTheHandle| |
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thatsTheHandle := false. |
200 | 154 |
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isHorizontal ifTrue:[ |
872 | 156 |
hx := hPoint x. |
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hy := 0. |
1333 | 158 |
(bx between:(hx - barHeight) and:(hx + barHeight)) ifTrue:[ |
872 | 159 |
prevPos := hx. |
160 |
startPos := bx - hx. |
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thatsTheHandle := true. |
872 | 162 |
]. |
163 |
] ifFalse:[ |
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parents:
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164 |
hx := 0. |
872 | 165 |
hy := hPoint y. |
1333 | 166 |
(by between:(hy - barHeight) and:(hy + barHeight)) ifTrue:[ |
872 | 167 |
prevPos := hy. |
168 |
startPos := by - hy. |
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thatsTheHandle := true. |
872 | 170 |
]. |
171 |
]. |
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172 |
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thatsTheHandle ifTrue:[ |
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movedHandle := handle. |
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175 |
view grabPointer. |
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176 |
view invertHandleBarAtX:hx y:hy. |
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(group := view windowGroup) notNil ifTrue:[ |
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group showCursor:view cursor |
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179 |
]. |
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180 |
clickPos := bx @ by. |
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181 |
^ self |
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182 |
]. |
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|
183 |
|
872 | 184 |
handle := handle + 1 |
185 |
]. |
|
186 |
movedHandle := nil |
|
200 | 187 |
] ifFalse:[ |
872 | 188 |
super buttonPress:button x:bx y:by |
200 | 189 |
] |
1333 | 190 |
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191 |
"Modified: / 29.7.1998 / 15:52:35 / cg" |
200 | 192 |
! |
193 |
||
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|
194 |
buttonRelease:button x:bx y:by |
104 | 195 |
"end bar-move" |
196 |
||
197 |
|aboveView belowView aboveIndex belowIndex |
|
131 | 198 |
newPos oldPos group subViews |
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199 |
relCornerAbove fromIndex toIndex |
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|
200 |
hX hY isHorizontal newCorner newOrigin| |
104 | 201 |
|
202 |
((button == 1) or:[button == #select]) ifTrue:[ |
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203 |
movedHandle isNil ifTrue:[^ self]. |
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|
204 |
|
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|
205 |
isHorizontal := view orientation ~~ #vertical. |
104 | 206 |
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207 |
view ungrabPointer. |
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208 |
(group := view windowGroup) notNil ifTrue:[ |
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|
209 |
group restoreCursors |
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210 |
]. |
104 | 211 |
|
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|
212 |
"undo the last invert" |
104 | 213 |
|
1626
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|
214 |
isHorizontal ifTrue:[ |
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|
215 |
hX := prevPos. hY := 0. |
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parents:
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|
216 |
] ifFalse:[ |
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|
217 |
hX := 0. hY := prevPos. |
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218 |
]. |
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219 |
view invertHandleBarAtX:hX y:hY. |
104 | 220 |
|
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221 |
"/ any change ? |
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222 |
isHorizontal ifTrue:[ |
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|
223 |
bx == clickPos x ifTrue:[^ self]. |
3013631d4384
do nothing if pointer was never moved;
Claus Gittinger <cg@exept.de>
parents:
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|
224 |
] ifFalse:[ |
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parents:
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225 |
by == clickPos y ifTrue:[^ self]. |
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226 |
]. |
104 | 227 |
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228 |
"compute the new relative heights" |
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parents:
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|
229 |
|
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|
230 |
aboveIndex := movedHandle. |
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|
231 |
belowIndex := movedHandle + 1. |
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|
232 |
movedHandle := nil. |
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|
233 |
subViews := view subViews. |
104 | 234 |
|
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|
235 |
aboveView := subViews at:aboveIndex. |
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parents:
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changeset
|
236 |
belowView := subViews at:belowIndex. |
104 | 237 |
|
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|
238 |
relCornerAbove := aboveView relativeCorner. |
3013631d4384
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Claus Gittinger <cg@exept.de>
parents:
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changeset
|
239 |
isHorizontal ifTrue:[ |
3013631d4384
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parents:
1483
diff
changeset
|
240 |
oldPos := relCornerAbove x. |
3013631d4384
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parents:
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diff
changeset
|
241 |
newPos := (prevPos + startPos / view width) asFloat. |
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parents:
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diff
changeset
|
242 |
newCorner := newPos @ relCornerAbove y. |
3013631d4384
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parents:
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|
243 |
newOrigin := newPos @ belowView relativeOrigin y. |
3013631d4384
do nothing if pointer was never moved;
Claus Gittinger <cg@exept.de>
parents:
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diff
changeset
|
244 |
] ifFalse:[ |
3013631d4384
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Claus Gittinger <cg@exept.de>
parents:
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diff
changeset
|
245 |
oldPos := relCornerAbove y. |
3013631d4384
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parents:
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changeset
|
246 |
newPos := (prevPos + startPos / view height) asFloat. |
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parents:
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|
247 |
newCorner := relCornerAbove x @ newPos. |
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parents:
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|
248 |
newOrigin := belowView relativeOrigin x @ newPos. |
3013631d4384
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Claus Gittinger <cg@exept.de>
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|
249 |
]. |
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parents:
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|
250 |
aboveView relativeCorner:newCorner. |
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|
251 |
belowView relativeOrigin:newOrigin. |
104 | 252 |
|
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|
253 |
view lockRedraw. |
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|
254 |
|
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|
255 |
oldPos > newPos ifTrue:[ |
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diff
changeset
|
256 |
fromIndex := aboveIndex. toIndex := belowIndex. |
3013631d4384
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Claus Gittinger <cg@exept.de>
parents:
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|
257 |
] ifFalse:[ |
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parents:
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|
258 |
fromIndex := belowIndex. toIndex := aboveIndex. |
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|
259 |
]. |
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do nothing if pointer was never moved;
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parents:
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260 |
view resizeSubviewsFrom:fromIndex to:toIndex. |
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parents:
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261 |
view redrawHandlesFrom:aboveIndex to:belowIndex. |
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do nothing if pointer was never moved;
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parents:
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262 |
view unlockRedraw. |
104 | 263 |
] ifFalse:[ |
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parents:
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changeset
|
264 |
super buttonRelease:button x:bx y:by |
104 | 265 |
] |
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do nothing if pointer was never moved;
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parents:
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diff
changeset
|
266 |
|
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do nothing if pointer was never moved;
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parents:
1483
diff
changeset
|
267 |
"Modified: / 29.7.1998 / 15:52:43 / cg" |
1483 | 268 |
! |
269 |
||
270 |
pointerEnter:state x:x y:y |
|
271 |
state == 0 ifTrue:[ |
|
272 |
movedHandle notNil ifTrue:[self buttonRelease:1 x:x y:y] |
|
273 |
] |
|
274 |
||
275 |
"Created: / 9.4.1998 / 12:34:22 / cg" |
|
276 |
"Modified: / 9.4.1998 / 12:35:05 / cg" |
|
200 | 277 |
! ! |
104 | 278 |
|
203 | 279 |
!VariablePanelController class methodsFor:'documentation'! |
280 |
||
281 |
version |
|
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parents:
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282 |
^ '$Header: /cvs/stx/stx/libwidg/Attic/VarPanelC.st,v 1.16 1998-07-29 16:00:06 cg Exp $' |
203 | 283 |
! ! |