Hi, I just uploaded a litte sample (source code included)
http://www.richinternet.de/blog/index.cfm?entry=ADD4FDD1-9B48-BFBC-2A70F 3C57EBC6892 Dirk. > -----Original Message----- > From: flexcoders@yahoogroups.com > [mailto:[EMAIL PROTECTED] On Behalf Of Cristian Pop > Sent: Friday, November 03, 2006 12:52 PM > To: flexcoders@yahoogroups.com > Subject: [flexcoders] Re: LinearGradient outside charts > > Brian, > > I did not post the code for measure override, so that's not > the problem. > I will try what Ely suggested and get back. > > Cristian > --- In flexcoders@yahoogroups.com, "Brian Deitte" <[EMAIL PROTECTED]> wrote: > > > > Hi Cristian, I had to override measuredWidth and > measuredHeight to get > > my gradient fill to display correctly. It's interested to > me though > > that your first example works correctly, which seems to > indicate that > > there's something else going on here. -Brian > > > > ________________________________ > > > > From: flexcoders@yahoogroups.com > [mailto:[EMAIL PROTECTED] > > On Behalf Of Cristian Pop > > Sent: Thursday, November 02, 2006 1:40 PM > > To: flexcoders@yahoogroups.com > > Subject: [flexcoders] Re: LinearGradient outside charts > > > > > > > > Thanks Ely, > > > > I'm happy to learn from the masters :-) I'm absolutely in love with > > what you do at quietlyscheming.com. > > > > I'm a beginner with extending components in AS and I admit that I > > don't yet fully understand the display hierarchy and the component > > live cycle. > > I wanted to extend the canvas to allow gradient, using the > fillCollor > > and fillAlpha styles. > > > > So I did something like this, based on an example from the docs. (I > > skip the style management code and give you onli the update method > > ) > > > > package > > { > > [...] > > // Define the variable to hold the current gradient fill colors. > > private var fillColorsData:Array; > > // Define the flag that indicates a change to fillColors. > > private var bFillColorsChanged:Boolean = true; > > > > // Define variables for additional controls on the fill. > > // You can create style properties for these as well. > > private var alphas:Array = [0.8, 0.2]; private var ratios:Array = > > [0x00, 0xFF]; > > > > > > // Constructor > > public function MyCanvas() { > > super(); > > } > > [...] > > override public function styleChanged(styleProp:String):void { > > > > super.styleChanged(styleProp); > > // Check to see if style changed. > > if (styleProp=="fillColors" || styleProp=="fillAlphas") { > > //bFillColorsChanged=true; invalidateDisplayList(); return; } } // > > Override updateDisplayList() to update the component // > based on the > > style setting. > > override protected function > > updateDisplayList(unscaledWidth:Number, > unscaledHeight:Number):void { > > > > super.updateDisplayList(unscaledWidth, unscaledHeight); > > > > // Check to see if style changed. > > > > if (bFillColorsChanged==true) > > { > > // Redraw gradient fill only if style changed. > > fillColorsData = getStyle("fillColors"); alphas = > > getStyle("fillAlphas"); var m:Matrix = new Matrix(); > > m.createGradientBox( unscaledWidth, unscaledHeight, -1.57, 0, 0 ); > > graphics.clear(); graphics.beginGradientFill( GradientType.LINEAR, > > fillColorsData, alphas, ratios, m ); graphics.drawRoundRect( 0, 0, > > unscaledWidth, unscaledHeight, > > Number(getStyle("cornerRadius")) > > ); > > } > > > > } > > } > > } > > > > It works great, but I wanted to be able to specifi the > colors,alphas > > and ratios easier. Then I've found LinearGradient and > IFill, that were > > used in charts to easily pass those values. > > > > I went a bit though the docs and the code and I tried this: > > > > package > > { > > public class MyCanvas2 extends Canvas > > { > > [Bindable] > > public var fill:IFill; > > > > // Constructor > > public function MyCanvas2() { > > super(); > > } > > > > > > // Override updateDisplayList() to update the component > > // based on the style setting. > > override protected function > > updateDisplayList(unscaledWidth:Number, > unscaledHeight:Number):void { > > > > super.updateDisplayList(unscaledWidth, unscaledHeight); > > var rect: RoundedRectangle = > > new RoundedRectangle( > > 0, > > 0, > > unscaledWidth, > > unscaledHeight, > > Number(getStyle("cornerRadius")) > > ); > > > > if (fill) { > > graphics.clear(); > > fill.begin(graphics, rect); > > fill.end(graphics); > > graphics.drawRoundRect( > > rect.left, > > rect.top, > > rect.width, > > rect.height, > > rect.cornerRadius); > > > > } > > } > > } > > } > > > > But it's not working. Nothing is drawn. I guess I'm missing some > > method that needs override. > > > > Thanks, > > > > Cristian Pop > > > > --- In flexcoders@yahoogroups.com > <mailto:flexcoders%40yahoogroups.com> > > , "Ely Greenfield" <egreenfi@> wrote: > > > > > > > > > > > > Post away, Cristian. I wrote the gradient classes in the > charts, and > > > can probably help. > > > > > > Ely. > > > > > > > > > ________________________________ > > > > > > From: flexcoders@yahoogroups.com > <mailto:flexcoders%40yahoogroups.com> > > [mailto:flexcoders@yahoogroups.com > <mailto:flexcoders%40yahoogroups.com> > > ] On > > > Behalf Of Cristian Pop > > > Sent: Thursday, November 02, 2006 1:57 AM > > > To: flexcoders@yahoogroups.com > <mailto:flexcoders%40yahoogroups.com> > > > Subject: [flexcoders] LinearGradient outside charts > > > > > > > > > > > > Hi, > > > > > > some time ago I've played a bit with creating components in AS and > > > I've extended the canvas to allow gradient using fillColors. > > > Back then I did not implement more than 2 colors. > > > In the meantime I've noticed the LinearGradient class and > I thought > > > that I could use it to pass easier the parameters required by a > > > gradient. angle, fill colors, alphas and ratios. > > > > > > So I've triend to extend the Canvas adding a fill > property (IFill) and > > > then in updateDisplayList to use the begin method of the Linear > > > Gradient to fill the graphics of the Canvas. > > > > > > I'm not sure what I'm doing wrong but it's not working. If anyone > > > knows how LinearGradient works and it can be used outside > the scope > > > shown in the documentation please let me know. > > > > > > I will try to post the code later. > > > > > > Thanks, > > > > > > Cristian Pop > > > > > > > > > > > -- > Flexcoders Mailing List > FAQ: http://groups.yahoo.com/group/flexcoders/files/flexcodersFAQ.txt > Search Archives: > http://www.mail-archive.com/flexcoders%40yahoogroups.com > Yahoo! Groups Links > > > > > -- Flexcoders Mailing List FAQ: http://groups.yahoo.com/group/flexcoders/files/flexcodersFAQ.txt Search Archives: http://www.mail-archive.com/flexcoders%40yahoogroups.com Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/flexcoders/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/flexcoders/join (Yahoo! 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