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"
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5
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COPYRIGHT (c) 1992 by Claus Gittinger
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All Rights Reserved
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This software is furnished under a license and may be used
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only in accordance with the terms of that license and with the
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inclusion of the above copyright notice. This software may not
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be provided or otherwise made available to, or used by, any
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other person. No title to or ownership of the software is
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hereby transferred.
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"
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VariableVerticalPanel subclass:#VariableHorizontalPanel
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instanceVariableNames:''
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classVariableNames:''
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poolDictionaries:''
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category:'Views-Layout'
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!
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VariableHorizontalPanel comment:'
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COPYRIGHT (c) 1992 by Claus Gittinger
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All Rights Reserved
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38
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$Header: /cvs/stx/stx/libwidg/VariableHorizontalPanel.st,v 1.6 1994-08-07 13:23:35 claus Exp $
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'!
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!VariableHorizontalPanel class methodsFor:'documentation'!
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copyright
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"
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COPYRIGHT (c) 1992 by Claus Gittinger
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All Rights Reserved
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This software is furnished under a license and may be used
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only in accordance with the terms of that license and with the
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inclusion of the above copyright notice. This software may not
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be provided or otherwise made available to, or used by, any
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other person. No title to or ownership of the software is
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hereby transferred.
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"
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!
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version
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"
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$Header: /cvs/stx/stx/libwidg/VariableHorizontalPanel.st,v 1.6 1994-08-07 13:23:35 claus Exp $
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"
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!
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documentation
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"
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a View to separate its subviews horizontally by a movable bar
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to adjust the size-ratios.
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The bar-handle is either an exposed knob (knobStyle == #motif)
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or the forms defined in Scroller (knobStyle ~~ #motif)
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or nothing.
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The subvies dimensions MUST be given as relative sizes;
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typically creation is done as:
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p := VariableHorizontalPanel in:superView.
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v1 := <someViewClass> origin:0.0 @ 0.0
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corner:0.5 @ 1.0
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in:p.
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v2 := <someViewClass> origin:0.5 @ 0.0
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corner:0.8 @ 1.0
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in:p.
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v3 := <someViewClass> origin:0.8 @ 0.0
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corner:1.0 @ 1.0
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in:p.
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example:
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|top p v1 v2 v3|
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top := StandardSystemView new.
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top extent:300@200.
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0
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p := VariableHorizontalPanel
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origin:0.0 @ 0.0
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corner:1.0 @ 1.0
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in:top.
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v1 := SelectionInListView
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origin:0.0 @ 0.0
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corner:0.5 @ 1.0
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in:p.
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v2 := EditTextView
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origin:0.5 @ 0.0
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corner:0.8 @ 1.0
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in:p.
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v3 := ScrollableView
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for:TextView
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in:p.
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v3 origin:0.8 @ 0.0
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corner:1.0 @ 1.0.
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top open
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"
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! !
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!VariableHorizontalPanel methodsFor:'initializing'!
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initCursor
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"set the cursor - a horizontal double arrow"
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cursor := Cursor sourceForm:(Form fromFile:'VHPanel.xbm')
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maskForm:(Form fromFile:'VHPanel_m.xbm')
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hotX:8
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hotY:8.
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"
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if bitmaps are not available, use a standard cursor
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"
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cursor isNil ifTrue:[
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"which one looks better ?"
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cursor := Cursor leftRightArrow
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"cursor := Cursor leftLimitArrow"
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]
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0
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! !
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!VariableHorizontalPanel methodsFor:'private'!
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handleOriginsFrom:start to:stop do:aBlock
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"evaluate the argument block for some handle-origins"
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|y hh|
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subViews notNil ifTrue:[
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shadowForm notNil ifTrue:[
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hh := shadowForm height
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] ifFalse:[
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hh := barHeight
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].
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(handlePosition == #left) ifTrue:[
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y := hh * 2
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] ifFalse:[
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(handlePosition == #right) ifTrue:[
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y := height - (2 * hh) - margin
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] ifFalse:[
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y := height // 2
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]
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].
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(start + 1) to:stop do:[:index |
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|x view|
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view := subViews at:index.
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x := view origin x - barHeight + 1.
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aBlock value:(x @ y)
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]
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]
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!
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148 |
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setupSubviewSizes
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"setup subviews sizes (in case of non-relative sizes)"
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|x w |
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153 |
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self anyNonRelativeSubviews ifTrue:[
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"there is at least one subview without
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relative origin/extent - setup all subviews
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to spread evenly ..."
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158 |
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x := 0.0.
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w := 1.0 / (subViews size).
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161 |
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1 to:(subViews size) do:[:index |
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|view|
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164 |
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view := subViews at:index.
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index == subViews size ifTrue:[
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view origin:(x @ 0.0) corner:(1.0 @ 1.0)
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] ifFalse:[
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view origin:(x @ 0.0) corner:((x + w) @ 1.0)
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].
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x := x + w
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]
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]
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!
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175 |
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resizeSubviewsFrom:start to:stop
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"readjust size of some subviews"
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|step nSubviews|
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180 |
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subViews notNil ifTrue:[
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(start <= stop) ifTrue:[
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step := 1
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] ifFalse:[
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step := -1
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].
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nSubviews := subViews size.
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start to:stop by:step do:[:index |
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|bw view o1 o2 relCorner relOrg newCorner newOrg|
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190 |
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view := subViews at:index.
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bw := view borderWidth.
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193 |
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index == 1 ifTrue:[
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o1 := 0.
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196 |
] ifFalse:[
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o1 := barHeight // 2 - bw
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198 |
].
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index == nSubviews ifTrue:[
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o2 := 0.
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] ifFalse:[
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o2 := barHeight // 2 - bw
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].
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204 |
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relCorner := view relativeCorner.
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relCorner isNil ifTrue:[
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207 |
self error:'subview must have relative corner'
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208 |
].
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209 |
newCorner := view cornerFromRelativeCorner.
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210 |
newCorner notNil ifTrue:[
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newCorner x:(newCorner x - o2)
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212 |
].
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213 |
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relOrg := view relativeOrigin.
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relOrg isNil ifTrue:[
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216 |
self error:'subview must have relative origin'
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217 |
].
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218 |
newOrg := view originFromRelativeOrigin.
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newOrg notNil ifTrue:[
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(index ~~ 1) ifTrue:[
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221 |
newOrg x:(newOrg x + o1)
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].
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].
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view pixelOrigin:newOrg corner:newCorner
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]
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]
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227 |
! !
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228 |
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229 |
!VariableHorizontalPanel methodsFor:'events'!
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230 |
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buttonPress:button x:bx y:by
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"button was pressed - if it hits a handle, start move"
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233 |
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234 |
|handle|
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235 |
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38
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236 |
((button == 1) or:[button == #select]) ifTrue:[
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0
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237 |
handle := 1.
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238 |
self handleOriginsDo:[:hPoint |
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239 |
|hx|
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240 |
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hx := hPoint x.
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(bx between:hx and:(hx + barHeight)) ifTrue:[
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movedHandle := handle.
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prev := hx.
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start := bx - hx.
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self noClipByChildren.
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self xoring:[
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self fillRectangleX:hx y:0 width:barHeight height:height
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249 |
].
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self clipByChildren.
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^ self
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252 |
].
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handle := handle + 1
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].
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255 |
movedHandle := nil
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] ifFalse:[
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257 |
super buttonPress:button x:bx y:by
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258 |
]
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259 |
!
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260 |
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261 |
buttonMotion:button x:bx y:by
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262 |
"mouse-button was moved while pressed;
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263 |
clear prev handleBar and draw handle bar at new position"
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264 |
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265 |
|xpos limitTop limitBot|
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266 |
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267 |
movedHandle isNil ifTrue: [^ self]. "should not happen"
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268 |
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269 |
"speedup - if there is already another movement,
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270 |
ignore thisone ... "
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271 |
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272 |
device synchronizeOutput.
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273 |
self buttonMotionEventPending ifTrue:[^ self].
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274 |
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275 |
xpos := bx - start.
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276 |
limitTop := barHeight // 2.
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277 |
limitBot := self width - barHeight.
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278 |
movedHandle > 1 ifTrue:[
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279 |
limitTop := (subViews at:movedHandle) origin x + (barHeight // 2)
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280 |
].
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281 |
movedHandle < (subViews size - 1) ifTrue:[
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|
282 |
limitBot := (subViews at:(movedHandle + 2)) origin x - barHeight
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283 |
].
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284 |
limitBot := limitBot - barHeight.
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285 |
(xpos < limitTop) ifTrue:[ "check against view limits"
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286 |
xpos := limitTop
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287 |
] ifFalse:[
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288 |
(xpos > limitBot) ifTrue:[
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|
289 |
xpos := limitBot
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290 |
]
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291 |
].
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292 |
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293 |
self noClipByChildren.
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294 |
self xoring:[
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295 |
self fillRectangleX:prev y:0 width:barHeight height:height.
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296 |
self fillRectangleX:xpos y:0 width:barHeight height:height
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297 |
].
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298 |
self clipByChildren.
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|
299 |
prev := xpos
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300 |
!
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301 |
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302 |
buttonRelease:button x:x y:y
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303 |
"end bar-move"
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304 |
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305 |
|aboveView belowView aboveIndex belowIndex newX|
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306 |
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38
|
307 |
((button == 1) or:[button == #select]) ifTrue:[
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0
|
308 |
movedHandle isNil ifTrue:[^ self].
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|
309 |
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|
310 |
"undo the last xor"
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|
311 |
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|
312 |
self noClipByChildren.
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|
313 |
self xoring:[
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|
314 |
self fillRectangleX:prev y:0 width:barHeight height:height
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|
315 |
].
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|
316 |
self clipByChildren.
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|
317 |
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|
318 |
"compute the new relative heights"
|
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|
319 |
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|
320 |
aboveIndex := movedHandle.
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|
321 |
belowIndex := movedHandle + 1.
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|
322 |
aboveView := subViews at:aboveIndex.
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|
323 |
belowView := subViews at:belowIndex.
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|
324 |
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|
325 |
newX := (prev + start / width) asFloat .
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|
326 |
aboveView relativeCorner:newX @ aboveView relativeCorner y.
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|
327 |
belowView relativeOrigin:newX @ belowView relativeOrigin y.
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|
328 |
self resizeSubviewsFrom:aboveIndex to:belowIndex.
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|
329 |
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|
330 |
movedHandle := nil.
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|
331 |
|
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|
332 |
"and redraw handles"
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|
333 |
|
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|
334 |
self redrawHandlesFrom:aboveIndex to:belowIndex
|
|
|
335 |
] ifFalse:[
|
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|
336 |
super buttonRelease:button x:x y:y
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|
337 |
]
|
|
|
338 |
! !
|
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|
339 |
|
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|
340 |
!VariableHorizontalPanel methodsFor:'drawing'!
|
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|
341 |
|
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|
342 |
drawHandleAtX:hx y:hy
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|
343 |
|w x m|
|
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|
344 |
|
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|
345 |
(self is3D and:[shadowForm notNil]) ifTrue:[
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|
346 |
w := shadowForm height
|
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|
347 |
] ifFalse:[
|
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|
348 |
w := barHeight - 4
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|
349 |
].
|
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|
350 |
|
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|
351 |
self paint:viewBackground.
|
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|
352 |
self fillRectangleX:hx y:margin
|
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|
353 |
width:barHeight
|
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|
354 |
height:(height - margin - margin).
|
|
|
355 |
|
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|
356 |
self is3D ifTrue:[
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|
357 |
m := (barHeight - w) // 2.
|
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|
358 |
shadowForm isNil ifTrue:[
|
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|
359 |
x := hx + (barHeight // 2).
|
|
7
|
360 |
separatingLine ifTrue:[
|
|
0
|
361 |
self paint:shadowColor.
|
|
|
362 |
self displayLineFromX:x y:margin toX:x y:(height - margin).
|
|
|
363 |
x := x + 1.
|
|
|
364 |
self paint:lightColor.
|
|
|
365 |
self displayLineFromX:x y:margin toX:x y:(height - margin).
|
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|
366 |
].
|
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|
367 |
self paint:viewBackground.
|
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|
368 |
self fillRectangleX:hx y:(hy - barWidth)
|
|
|
369 |
width:w height:(barWidth + barWidth).
|
|
|
370 |
|
|
38
|
371 |
"/ x := hx. "old"
|
|
|
372 |
x := hx - 1. "2.10.3"
|
|
|
373 |
self drawEdgesForX:(x + m)
|
|
0
|
374 |
y:(hy - barWidth)
|
|
|
375 |
width:w height:(barWidth + barWidth)
|
|
|
376 |
level:2
|
|
|
377 |
] ifFalse:[
|
|
38
|
378 |
"/ x := hx. "old"
|
|
|
379 |
x := hx - 1. "2.10.3"
|
|
|
380 |
self drawHandleFormAtX:(x + m) y:hy
|
|
|
381 |
].
|
|
|
382 |
style == #st80 ifTrue:[
|
|
|
383 |
x := hx - 1.
|
|
|
384 |
self paint:lightColor.
|
|
|
385 |
self displayLineFromX:x y:margin toX:x y:(height - margin).
|
|
|
386 |
x := hx + barHeight - 2.
|
|
|
387 |
self paint:shadowColor.
|
|
|
388 |
self displayLineFromX:x y:margin toX:x y:(height - margin).
|
|
|
389 |
].
|
|
0
|
390 |
] ifFalse:[
|
|
|
391 |
x := hx + barHeight - 2.
|
|
|
392 |
self paint:handleColor.
|
|
7
|
393 |
separatingLine ifTrue:[
|
|
|
394 |
self displayLineFromX:hx y:0 toX:hx y:height.
|
|
|
395 |
self displayLineFromX:x y:0 toX:x y:height.
|
|
|
396 |
].
|
|
0
|
397 |
self fillRectangleX:hx y:hy width:barHeight height:barHeight
|
|
|
398 |
]
|
|
|
399 |
!
|
|
|
400 |
|
|
|
401 |
redrawHandlesFrom:start to:stop
|
|
|
402 |
"redraw some handles"
|
|
|
403 |
|
|
|
404 |
subViews notNil ifTrue:[
|
|
|
405 |
self handleOriginsFrom:start to:stop do:[:hPoint |
|
|
|
406 |
self drawHandleAtX:(hPoint x) y:(hPoint y)
|
|
|
407 |
].
|
|
|
408 |
movedHandle notNil ifTrue:[
|
|
|
409 |
self noClipByChildren.
|
|
|
410 |
self xoring:[
|
|
|
411 |
self fillRectangleX:prev y:0 width:barHeight height:height
|
|
|
412 |
].
|
|
|
413 |
self clipByChildren
|
|
|
414 |
]
|
|
|
415 |
]
|
|
|
416 |
|
|
|
417 |
! !
|