author | Claus Gittinger <cg@exept.de> |
Wed, 06 Apr 2011 21:18:38 +0200 | |
changeset 5739 | c4fbd37a6164 |
parent 5738 | b69308a38fb6 |
child 6013 | aee5be18d9a1 |
permissions | -rw-r--r-- |
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" |
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COPYRIGHT (c) 2009 by eXept Software AG |
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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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"{ Package: 'stx:libview' }" |
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AbstractBackground subclass:#GradientBackground |
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instanceVariableNames:'color1 color2 direction cachedForm usedLength' |
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classVariableNames:'' |
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poolDictionaries:'' |
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category:'Graphics-Support' |
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! |
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!GradientBackground class methodsFor:'documentation'! |
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copyright |
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" |
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COPYRIGHT (c) 2009 by eXept Software AG |
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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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comment/format in: #initializeAllPluginClasses
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! |
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comment/format in: #initializeAllPluginClasses
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examples |
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" |
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comment/format in: #initializeAllPluginClasses
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|bg v| |
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comment/format in: #initializeAllPluginClasses
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comment/format in: #initializeAllPluginClasses
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bg := GradientBackground new color1:Color red color2:Color yellow. |
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comment/format in: #initializeAllPluginClasses
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v := View new extent:300@300. |
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comment/format in: #initializeAllPluginClasses
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v viewBackground:bg. |
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v open. |
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" |
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! ! |
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!GradientBackground methodsFor:'accessing'! |
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color1 |
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^ color1 |
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"Created: / 23-01-2011 / 02:01:29 / cg" |
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! |
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color1:aColor |
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color1 := aColor. |
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cachedForm := nil. |
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"Created: / 23-01-2011 / 02:01:50 / cg" |
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"Modified: / 03-02-2011 / 19:49:18 / cg" |
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! |
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color1:aColor1 color2:aColor2 |
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color1 := aColor1. |
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color2 := aColor2. |
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cachedForm := nil. |
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"Created: / 03-02-2011 / 19:52:59 / cg" |
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! |
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color2 |
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^ color2 |
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"Created: / 23-01-2011 / 02:01:32 / cg" |
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! |
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color2:aColor |
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color2 := aColor. |
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cachedForm := nil. |
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"Created: / 23-01-2011 / 02:01:55 / cg" |
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"Modified: / 03-02-2011 / 19:49:23 / cg" |
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! |
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direction |
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"possible values: |
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#northSouth |
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#eastWest |
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others are not yet supported |
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" |
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^ direction |
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"Modified: / 23-01-2011 / 14:36:36 / cg" |
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! |
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direction:something |
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"possible values: |
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#northSouth |
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#eastWest |
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others are not yet supported |
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" |
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direction ~= something ifTrue:[ |
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direction := something. |
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cachedForm := nil. |
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] |
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"Modified: / 03-02-2011 / 19:49:41 / cg" |
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! |
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usedLength |
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^ usedLength |
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! |
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usedLength:something |
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usedLength := something. |
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! ! |
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122 |
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!GradientBackground methodsFor:'converting'! |
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asFormOn:aDevice |
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|h w| |
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cachedForm isNil ifTrue:[ |
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(direction == #northSouth or:[direction == nil]) ifTrue:[ |
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h := usedLength ? (Display height). "/ aView height. |
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w := 8. |
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] ifFalse:[ |
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h := 8. |
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w := usedLength ? (Display width). "/ aView width. |
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]. |
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cachedForm := Form width:w height:h depth:aDevice depth onDevice:aDevice. |
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"/ cachedForm clear. |
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self fillRectangleX:0 y:0 width:w height:h in:cachedForm |
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]. |
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^ cachedForm |
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"Created: / 03-02-2011 / 20:05:30 / cg" |
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! |
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onDevice:device |
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^ self asFormOn:device. |
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"Created: / 03-02-2011 / 19:56:06 / cg" |
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! ! |
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!GradientBackground methodsFor:'drawing'! |
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fillRectangleX:x y:y width:w height:h in:aView |
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"this is a first (very inefficient) try" |
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157 |
|hAll wAll r1 r2 g1 g2 b1 b2 dR r dG g dB b scaleStartX scaleStartY |
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yRect hRun xRect wRun |
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rC gC bC lastR lastG lastB |
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minR maxR minG maxG minB maxB| |
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161 |
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"/ always take the full-screen as reference |
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"/ (so we do not have to care for changed gradient, when view changes size) |
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usedLength notNil ifTrue:[ |
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hAll := usedLength. |
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wAll := usedLength. |
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scaleStartX := 0. |
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scaleStartY := 0. |
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] ifFalse:[ |
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hAll := Display height. "/ aView height. |
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wAll := Display width. "/ aView width. |
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172 |
scaleStartX := x. |
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scaleStartY := y. |
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]. |
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r1 := color1 redByte. |
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r2 := color2 redByte. |
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g1 := color1 greenByte. |
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g2 := color2 greenByte. |
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b1 := color1 blueByte. |
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181 |
b2 := color2 blueByte. |
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||
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minR := r1 min:r2. |
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maxR := r1 max:r2. |
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minG := g1 min:g2. |
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maxG := g1 max:g2. |
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minB := b1 min:b2. |
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maxB := b1 max:b2. |
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190 |
aView lineStyle:#solid. |
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191 |
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5688 | 192 |
"/ individual lines; from top to bottom |
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193 |
(direction == #northSouth or:[direction == #vertical or:[direction == nil]]) ifTrue:[ |
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194 |
dR := (r2 - r1) / hAll. |
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195 |
r := r1 + (dR * scaleStartY). |
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196 |
dG := (g2 - g1) / hAll. |
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197 |
g := g1 + (dG * scaleStartY). |
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198 |
dB := (b2 - b1) / hAll. |
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199 |
b := b1 + (dB * scaleStartY). |
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r := (r max:minR) min:maxR. |
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g := (g max:minG) min:maxG. |
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b := (b max:minB) min:maxB. |
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lastR := r asInteger. lastG := g asInteger. lastB := b asInteger. |
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206 |
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yRect := y. |
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hRun := 0. |
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y to:y+h-1 do:[:yP | |
5684 | 210 |
rC := r asInteger. |
211 |
gC := g asInteger. |
|
212 |
bC := b asInteger. |
|
213 |
(rC ~~ lastR or:[gC ~~ lastG or:[bC ~~ lastB]]) ifTrue:[ |
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aView paint:(Color redByte:lastR greenByte:lastG blueByte:lastB). |
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215 |
aView fillRectangleX:x y:yRect width:w height:hRun. |
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yRect := yP. hRun := 0. |
5684 | 217 |
lastR := rC. lastG := gC. lastB := bC. |
218 |
]. |
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hRun := hRun + 1. |
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r := ((r + dR) max:minR) min:maxR. |
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g := ((g + dG) max:minG) min:maxG. |
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b := ((b + dB) max:minB) min:maxB. |
5684 | 223 |
]. |
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hRun ~~ 0 ifTrue:[ |
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aView paint:(Color redByte:lastR greenByte:lastG blueByte:lastB). |
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aView fillRectangleX:x y:yRect width:w height:hRun. |
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227 |
]. |
5688 | 228 |
^ self. |
229 |
]. |
|
230 |
||
231 |
"/ individual lines; from left to right |
|
232 |
(direction == #eastWest or:[direction == #horizontal]) ifTrue:[ |
|
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dR := (r2 - r1) / wAll. |
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r := r1 + (dR * scaleStartX). |
5688 | 235 |
dG := (g2 - g1) / wAll. |
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g := g1 + (dG * scaleStartX). |
5688 | 237 |
dB := (b2 - b1) / wAll. |
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b := b1 + (dB * scaleStartX). |
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239 |
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r := (r max:minR) min:maxR. |
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g := (g max:minG) min:maxG. |
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b := (b max:minB) min:maxB. |
5688 | 243 |
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lastR := r asInteger. lastG := g asInteger. lastB := b asInteger. |
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245 |
|
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xRect := x. |
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wRun := 0. |
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248 |
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x to:x+w-1 do:[:xP | |
5688 | 250 |
rC := r asInteger. |
251 |
gC := g asInteger. |
|
252 |
bC := b asInteger. |
|
253 |
(rC ~~ lastR or:[gC ~~ lastG or:[bC ~~ lastB]]) ifTrue:[ |
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254 |
aView paint:(Color redByte:lastR greenByte:lastG blueByte:lastB). |
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255 |
aView fillRectangleX:xRect y:y width:wRun height:h. |
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256 |
xRect := xP. wRun := 0. |
5688 | 257 |
lastR := rC. lastG := gC. lastB := bC. |
258 |
]. |
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wRun := wRun + 1. |
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260 |
r := ((r + dR) max:minR) min:maxR. |
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261 |
g := ((g + dG) max:minG) min:maxG. |
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262 |
b := ((b + dB) max:minB) min:maxB. |
5688 | 263 |
]. |
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264 |
wRun ~~ 0 ifTrue:[ |
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265 |
aView paint:(Color redByte:lastR greenByte:lastG blueByte:lastB). |
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266 |
aView fillRectangleX:xRect y:y width:wRun height:h. |
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267 |
]. |
5688 | 268 |
^ self. |
5684 | 269 |
] |
270 |
||
271 |
"Created: / 23-01-2011 / 01:59:29 / cg" |
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272 |
"Modified: / 06-04-2011 / 21:18:07 / cg" |
5684 | 273 |
! ! |
274 |
||
5461 | 275 |
!GradientBackground class methodsFor:'documentation'! |
276 |
||
277 |
version_CVS |
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278 |
^ '$Header: /cvs/stx/stx/libview/GradientBackground.st,v 1.13 2011-04-06 19:18:38 cg Exp $' |
5461 | 279 |
! ! |