| author | Claus Gittinger <cg@exept.de> |
| Fri, 31 May 1996 19:23:26 +0200 | |
| changeset 195 | 0fbaea91aa3d |
| parent 194 | e57ac9093b2d |
| child 196 | 9311b28d1a32 |
| permissions | -rw-r--r-- |
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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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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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||
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!Ruler class methodsFor:'documentation'! |
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||
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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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||
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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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||
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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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instance variables: |
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||
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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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||
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examples |
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" |
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[exBegin] |
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|top ruler| |
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||
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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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[exEnd] |
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defining paperWidth: |
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[exBegin] |
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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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[exEnd] |
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||
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hide unit string: |
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[exBegin] |
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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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[exEnd] |
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both horizontal and vertical rulers (as in DrawTool): |
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[exBegin] |
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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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[exEnd] |
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with some 3D effects: |
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[exBegin] |
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|top hRuler vRuler| |
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||
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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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[exEnd] |
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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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||
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heightOfContents |
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^ (device verticalPixelPerInch * paperHeight) rounded |
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! |
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||
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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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e57ac9093b2d
use #invalidate instead of #redraw
Claus Gittinger <cg@exept.de>
parents:
161
diff
changeset
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metric := aSymbol. |
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e57ac9093b2d
use #invalidate instead of #redraw
Claus Gittinger <cg@exept.de>
parents:
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diff
changeset
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self invalidate |
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] |
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e57ac9093b2d
use #invalidate instead of #redraw
Claus Gittinger <cg@exept.de>
parents:
161
diff
changeset
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|
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e57ac9093b2d
use #invalidate instead of #redraw
Claus Gittinger <cg@exept.de>
parents:
161
diff
changeset
|
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"Modified: 29.5.1996 / 16:42:46 / cg" |
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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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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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||
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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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e57ac9093b2d
use #invalidate instead of #redraw
Claus Gittinger <cg@exept.de>
parents:
161
diff
changeset
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scale := aFactor. |
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e57ac9093b2d
use #invalidate instead of #redraw
Claus Gittinger <cg@exept.de>
parents:
161
diff
changeset
|
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self invalidate |
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] |
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e57ac9093b2d
use #invalidate instead of #redraw
Claus Gittinger <cg@exept.de>
parents:
161
diff
changeset
|
157 |
|
|
e57ac9093b2d
use #invalidate instead of #redraw
Claus Gittinger <cg@exept.de>
parents:
161
diff
changeset
|
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"Modified: 29.5.1996 / 16:42:56 / cg" |
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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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||
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showUnit := aBoolean. |
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! |
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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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e57ac9093b2d
use #invalidate instead of #redraw
Claus Gittinger <cg@exept.de>
parents:
161
diff
changeset
|
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self invalidate |
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e57ac9093b2d
use #invalidate instead of #redraw
Claus Gittinger <cg@exept.de>
parents:
161
diff
changeset
|
172 |
|
|
e57ac9093b2d
use #invalidate instead of #redraw
Claus Gittinger <cg@exept.de>
parents:
161
diff
changeset
|
173 |
"Modified: 29.5.1996 / 16:43:03 / cg" |
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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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!Ruler methodsFor:'initialization'! |
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initialize |
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super initialize. |
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viewBackground := styleSheet colorAt:#rulerBackgroundColor default:viewBackground. |
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fgColor := styleSheet colorAt:#rulerForegroundColor. |
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fgColor isNil ifTrue:[ |
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fgColor := styleSheet colorAt:#foregroundColor. |
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]. |
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fgColor isNil ifTrue:[ |
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viewBackground brightness > 0.5 ifTrue:[ |
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fgColor := Black. |
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] ifFalse:[ |
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fgColor := White |
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]. |
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]. |
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fgColor := fgColor on:device. |
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bitGravity := #NorthWest. |
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self height:(font height + (2 * font descent)). |
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(Smalltalk language == #english) ifTrue:[ |
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metric := #inch |
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] ifFalse:[ |
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metric := #mm |
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]. |
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metric := styleSheet at:#rulerMetric default:metric. |
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showUnit := true. |
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scale := 1. |
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paperWidth := 8.5. |
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paperHeight := 11. |
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" |
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take a smaller font |
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" |
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font := (Font family:(font family) |
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face:(font face) |
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style:(font style) |
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size:8) on:device. |
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" |
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Ruler new open |
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" |
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! |
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reinitialize |
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super reinitialize. |
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font := font on:device. |
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! ! |
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!Ruler methodsFor:'metric conversions'! |
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inchToPixel:inches |
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"convert inches to screen pixels" |
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^ inches * self horizontalPixelPerInch |
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! |
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millimeterToPixel:mm |
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"convert mms to screen pixels" |
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^ mm * self horizontalPixelPerMillimeter |
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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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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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(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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]. |
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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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marg := 3. "character shift" |
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(metric == #mm) ifTrue:[ |
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"centimeter - long blibs every centimeter; short ones every half" |
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paperWidthMM := UnitConverter 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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x := (pixelPerMM * pos) rounded. |
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[(x < (width+xOrigin)) and:[pos <= paperWidthMM]] whileTrue:[ |
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|l| |
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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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((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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self displayString:'cm ' x:marg+xOrigin y:charY. |
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]. |
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(metric == #inch) ifTrue:[ |
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"inches - long blibs every inch; short ones every half; very |
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short ones every quarter" |
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pixelPerInch := (self inchToPixel:1) * scale. |
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pos := 0.25. |
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showUnit ifTrue:[ |
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labelRight := marg + (font widthOf:'inch') + 3 + xOrigin. |
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] ifFalse:[ |
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labelRight := xOrigin |
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]. |
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x := (pixelPerInch * pos) rounded. |
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veryShortLen := longLen // 4. |
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[(x < (xOrigin+width)) and:[pos <= paperWidth]] whileTrue:[ |
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|l| |
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l := shortLen. |
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(mod == 0) ifTrue:[ |
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x < labelRight ifFalse:[ |
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l := longLen |
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] |
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] ifFalse:[ |
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(mod == 2) ifFalse:[ |
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l := veryShortLen |
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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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(mod == 0 and:[x >= labelRight]) ifTrue:[ |
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self displayString:pos asInteger printString |
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x:(x + marg) |
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y:charY |
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]. |
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mod := (mod + 1) \\ 4. |
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pos := pos + 0.25. |
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x := (pixelPerInch * pos) rounded |
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]. |
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self displayString:'inch ' x:marg+xOrigin y:charY. |
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]. |
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self redrawEdges |
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"Modified: 31.5.1996 / 18:06:55 / cg" |
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! ! |
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||
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!Ruler class methodsFor:'documentation'! |
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||
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version |
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^ '$Header: /cvs/stx/stx/libwidg2/Ruler.st,v 1.24 1996-05-31 17:23:16 cg Exp $' |
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! ! |