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"
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4
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COPYRIGHT (c) 1991 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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SimpleView subclass:#Ruler
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instanceVariableNames:'fgColor metric paperWidth paperHeight scale showUnit'
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classVariableNames:''
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poolDictionaries:''
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category:'Views-Misc'
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!
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Ruler comment:'
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COPYRIGHT (c) 1991 by Claus Gittinger
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All Rights Reserved
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$Header: /cvs/stx/stx/libwidg2/Ruler.st,v 1.15 1995-05-03 00:42:50 claus Exp $
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'!
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!Ruler class methodsFor:'documentation'!
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copyright
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"
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COPYRIGHT (c) 1991 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/libwidg2/Ruler.st,v 1.15 1995-05-03 00:42:50 claus Exp $
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"
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!
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documentation
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"
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a shows some unit scale; See example use in DrawTool.
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36
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instance variables:
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fgColor <Color> color to draw text and marks with
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metric <Symbol> inch or mm
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paperWidth <Number> width of paper
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paperHeight <Number> height of paper
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scale <Number> scale factor for zoom
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showUnit <Boolean> if true, a unit string is displayed
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"
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!
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examples
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"
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|top ruler|
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top := StandardSystemView new.
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ruler := Ruler origin:0.0@0.0 corner:1.0@30 in:top.
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top open
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defining paperWidth:
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0
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|top ruler|
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top := StandardSystemView new.
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ruler := Ruler origin:0.0@0.0 corner:1.0@30 in:top.
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ruler paperWidthInch:5.
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top open
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hide unit string:
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|top ruler|
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top := StandardSystemView new.
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ruler := Ruler origin:0.0@0.0 corner:1.0@30 in:top.
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ruler showUnit:false.
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top open
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both horizontal and vertical rulers (as in DrawTool):
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|top hRuler vRuler|
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top := StandardSystemView new.
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hRuler := Ruler origin:30@0.0 corner:1.0@30 in:top.
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vRuler := VerticalRuler origin:0.0@30 corner:30@1.0 in:top.
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vRuler showUnit:false.
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top open
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with some 3D effects:
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|top hRuler vRuler|
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top := StandardSystemView new.
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hRuler := Ruler origin:30@0.0 corner:1.0@30 in:top.
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vRuler := VerticalRuler origin:0.0@30 corner:30@1.0 in:top.
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vRuler showUnit:false.
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hRuler level:1.
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vRuler level:1.
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top open
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see the DrawTool, for how to make it scroll in sync with some
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other view.
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"
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! !
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!Ruler methodsFor:'accessing'!
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metric:aSymbol
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"set the metric. The argument may be either #inch or #mm"
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aSymbol ~~ metric ifTrue:[
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metric := aSymbol.
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shown ifTrue:[
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self redraw
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]
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]
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!
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scale:aFactor
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"set the scale factor. 1 is identity."
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aFactor ~= scale ifTrue:[
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scale := aFactor.
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shown ifTrue:[
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self redraw
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]
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]
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!
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paperWidthInch:inches
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"set the width of the document"
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paperWidth := inches.
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shown ifTrue:[
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self redraw
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]
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!
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paperWidthMM:millis
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"set the width of the document"
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156 |
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paperWidth := self millimeterToInch:millis.
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shown ifTrue:[
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self redraw
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]
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!
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showUnit:aBoolean
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"set/clear the showUnit flag. If false, the unit string
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(i.e. 'inch' or 'mm') is not schown. Default is true."
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showUnit := aBoolean.
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!
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viewOrigin:origin
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origin = self viewOrigin ifTrue:[^ self].
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super setViewOrigin:origin.
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self redraw
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!
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widthOfContents
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^ (device horizontalPixelPerInch * paperWidth) rounded
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!
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heightOfContents
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^ (device verticalPixelPerInch * paperHeight) rounded
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! !
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!Ruler methodsFor:'redrawing'!
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redraw
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"redraw the scale"
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|x pixelPerMM pixelPerInch mod pos shortLen veryShortLen longLen charY
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top paperWidthMM paperWidthPixel xOrigin labelRight stringRight marg|
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0
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191 |
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shown ifFalse:[^ self].
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self clear.
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xOrigin := self viewOrigin x.
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paperWidthPixel := ((self inchToPixel:paperWidth) * scale) rounded.
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199 |
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(xOrigin + width > paperWidthPixel) ifTrue:[
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self paint:(Color darkGrey).
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self fillRectangleX:paperWidthPixel y:0
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width:(xOrigin + width - paperWidthPixel)
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height:height.
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self paint:fgColor.
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self displayLineFromX:paperWidthPixel y:0
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toX:paperWidthPixel y:height
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0
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].
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209 |
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self paint:fgColor.
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top := height - font height - font ascent.
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longLen := font height.
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shortLen := longLen // 2.
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charY := top + (font ascent) + shortLen.
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mod := 1.
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6
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marg := 3. "character shift"
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218 |
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(metric == #mm) ifTrue:[
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"centimeter - long blibs every centimeter; short ones every half"
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221 |
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paperWidthMM := self inchToMillimeter:paperWidth.
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pixelPerMM := (self millimeterToPixel:1) * scale.
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pos := 5.
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showUnit ifTrue:[
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labelRight := stringRight := marg + (font widthOf:'cm') + 3 + xOrigin.
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] ifFalse:[
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labelRight := stringRight := xOrigin.
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].
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6
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230 |
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x := (pixelPerMM * pos) rounded.
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[(x < (width+xOrigin)) and:[pos <= paperWidthMM]] whileTrue:[
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|l|
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234 |
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l := shortLen.
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(mod ~~ 1) ifTrue:[
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x < stringRight ifFalse:[
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l := longLen
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].
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].
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self displayLineFromX:x y:top
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toX:x y:(top + l).
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243 |
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|
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((x < stringRight) or:[mod == 1]) ifFalse:[
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self displayString:(pos // 10) printString
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x:(x + marg)
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y:charY.
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stringRight := x + marg
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+ (font widthOf:(pos // 10) printString)
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].
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mod := (mod + 1) \\ 2.
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pos := pos + 5.
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x := (pixelPerMM * pos) rounded
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].
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255 |
self displayString:'cm ' x:marg+xOrigin y:charY.
|
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0
|
256 |
].
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257 |
(metric == #inch) ifTrue:[
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|
258 |
"inches - long blibs every inch; short ones every half; very
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259 |
short ones every quarter"
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0
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260 |
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26
|
261 |
pixelPerInch := (self inchToPixel:1) * scale.
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|
262 |
pos := 0.25.
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|
263 |
showUnit ifTrue:[
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|
264 |
labelRight := marg + (font widthOf:'inch') + 3 + xOrigin.
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|
265 |
] ifFalse:[
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labelRight := xOrigin
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|
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].
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6
|
268 |
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x := (pixelPerInch * pos) rounded.
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270 |
veryShortLen := longLen // 4.
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271 |
[(x < (xOrigin+width)) and:[pos <= paperWidth]] whileTrue:[
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|l|
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273 |
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274 |
l := shortLen.
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|
275 |
(mod == 0) ifTrue:[
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276 |
x < labelRight ifFalse:[
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28
|
277 |
l := longLen
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24
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278 |
]
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279 |
] ifFalse:[
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28
|
280 |
(mod == 2) ifFalse:[
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281 |
l := veryShortLen
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24
|
282 |
]
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283 |
].
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28
|
284 |
self displayLineFromX:x y:top
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285 |
toX:x y:(top + l).
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286 |
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|
287 |
(mod == 0 and:[x >= labelRight]) ifTrue:[
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|
288 |
self displayString:pos asInteger printString
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|
289 |
x:(x + marg)
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|
290 |
y:charY
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|
291 |
].
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24
|
292 |
mod := (mod + 1) \\ 4.
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|
293 |
pos := pos + 0.25.
|
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34
|
294 |
x := (pixelPerInch * pos) rounded
|
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24
|
295 |
].
|
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34
|
296 |
self displayString:'inch ' x:marg+xOrigin y:charY.
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0
|
297 |
].
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|
298 |
self redrawEdges
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|
299 |
! !
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|
300 |
|
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|
301 |
!Ruler methodsFor:'initialization'!
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302 |
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303 |
initialize
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304 |
super initialize.
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|
305 |
|
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42
|
306 |
viewBackground := StyleSheet colorAt:#rulerBackgroundColor default:viewBackground.
|
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33
|
307 |
fgColor := StyleSheet colorAt:#rulerForegroundColor.
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|
308 |
fgColor isNil ifTrue:[
|
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|
309 |
fgColor := StyleSheet colorAt:#foregroundColor.
|
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|
310 |
].
|
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|
311 |
fgColor isNil ifTrue:[
|
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|
312 |
viewBackground brightness > 0.5 ifTrue:[
|
|
|
313 |
fgColor := Black.
|
|
|
314 |
] ifFalse:[
|
|
|
315 |
fgColor := White
|
|
|
316 |
].
|
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|
317 |
].
|
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|
318 |
fgColor := fgColor on:device.
|
|
|
319 |
|
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26
|
320 |
bitGravity := #NorthWest.
|
|
|
321 |
|
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28
|
322 |
self height:(font height + (2 * font descent)).
|
|
42
|
323 |
|
|
30
|
324 |
(Smalltalk language == #english) ifTrue:[
|
|
24
|
325 |
metric := #inch
|
|
0
|
326 |
] ifFalse:[
|
|
24
|
327 |
metric := #mm
|
|
0
|
328 |
].
|
|
42
|
329 |
metric := StyleSheet at:#rulerMetric default:metric.
|
|
|
330 |
|
|
33
|
331 |
showUnit := true.
|
|
|
332 |
|
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26
|
333 |
scale := 1.
|
|
|
334 |
|
|
0
|
335 |
paperWidth := 8.5.
|
|
24
|
336 |
paperHeight := 11.
|
|
0
|
337 |
|
|
24
|
338 |
"
|
|
|
339 |
take a smaller font
|
|
|
340 |
"
|
|
|
341 |
font := (Font family:(font family)
|
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|
342 |
face:(font face)
|
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|
343 |
style:(font style)
|
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|
344 |
size:8) on:device.
|
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|
345 |
|
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|
346 |
"
|
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|
347 |
Ruler new open
|
|
|
348 |
"
|
|
|
349 |
!
|
|
|
350 |
|
|
|
351 |
reinitialize
|
|
|
352 |
super reinitialize.
|
|
|
353 |
font := font on:device.
|
|
0
|
354 |
! !
|
|
|
355 |
|
|
|
356 |
!Ruler methodsFor:'metric conversions'!
|
|
|
357 |
|
|
|
358 |
inchToMillimeter:inches
|
|
|
359 |
"convert inches to mm"
|
|
|
360 |
|
|
|
361 |
^ inches * 25.4
|
|
|
362 |
!
|
|
|
363 |
|
|
|
364 |
inchToPixel:inches
|
|
|
365 |
"convert inches to screen pixels"
|
|
|
366 |
|
|
|
367 |
^ inches * self horizontalPixelPerInch
|
|
|
368 |
!
|
|
|
369 |
|
|
|
370 |
inchToTwip:inches
|
|
|
371 |
"convert inches to twips"
|
|
|
372 |
|
|
|
373 |
^ inches * 1440
|
|
|
374 |
|
|
|
375 |
!
|
|
|
376 |
|
|
|
377 |
millimeterToPixel:mm
|
|
|
378 |
"convert mms to screen pixels"
|
|
|
379 |
|
|
|
380 |
^ mm * self horizontalPixelPerMillimeter
|
|
|
381 |
|
|
|
382 |
!
|
|
|
383 |
|
|
|
384 |
millimeterToInch:mm
|
|
|
385 |
"convert mm to inches"
|
|
|
386 |
|
|
|
387 |
^ mm / 25.4
|
|
|
388 |
!
|
|
|
389 |
|
|
|
390 |
pointToTwip:points
|
|
|
391 |
"convert points to twips"
|
|
|
392 |
|
|
|
393 |
^ points * 20
|
|
|
394 |
!
|
|
|
395 |
|
|
|
396 |
twipToInch:twips
|
|
|
397 |
"convert twips to inches"
|
|
|
398 |
|
|
|
399 |
^ twips / 1440.0
|
|
|
400 |
!
|
|
|
401 |
|
|
|
402 |
pixelToInch:pixels
|
|
|
403 |
"convert pixels to inches"
|
|
|
404 |
|
|
|
405 |
^ pixels / self horizontalPixelPerInch
|
|
|
406 |
!
|
|
|
407 |
|
|
|
408 |
twipToPixel:twips
|
|
|
409 |
"convert twips to screen pixels"
|
|
|
410 |
|
|
|
411 |
^ (twips / 1440.0) * self horizontalPixelPerInch
|
|
|
412 |
|
|
|
413 |
!
|
|
|
414 |
|
|
|
415 |
twipToPoint:twips
|
|
|
416 |
"convert twips to points"
|
|
|
417 |
|
|
|
418 |
^ twips / 20.0
|
|
|
419 |
! !
|