Here is a fix to the workaround (when drawing does not touch both axes
and there is no subview), insert these lines instead of the arc,
fillStyle, and fill calls:
redlight.moveTo(0, 0);
redlight.lineTo(0, 0);
redlight.moveTo(0, r);
redlight.lineTo(r, r);
redlight.stroke();
Without the (0, 0) operations the height is just 1 as can be easily seen.
Sorry for all the emails about this, but drawview is very powerful and
would be great to get working consistently with view. It is, of
course, very complex to maintain the width and height "manually".
(Another example of drawview's power: it automatically detects context
menu mouse downs on only the painted parts! though, I haven't tested
this recently.)
On Thu, Nov 20, 2008 at 2:42 PM, Greg Denton <[EMAIL PROTECTED]> wrote:
> There was no response several months ago and now I'm just getting back
> to this part of my code and noticed different behavior in 4.2b2 and
> stumbled across a "workaround".
>
> The different behavior is that the drawview no longer resizes at all,
> neither expanding nor shrinking, whereas before it would expand.
>
> The workaround is to set the width and height to null before drawing.
> Insert these lines before "redlight.clear();":
>
> redlight.setAttribute('width', null);
> redlight.setAttribute('height', null);
>
> The drawview will both expand and shrink.
>
> There is a problem with this workaround, however, when drawing does
> not touch all the edges of the view, e.g. a 1 pixel line from (0,20)
> to (20,20) results in a width of 20 and height 1 (should be 20). This
> is "fixed", oddly enough, by including a subview to the drawview.
>
> On Wed, Sep 24, 2008 at 5:24 PM, Greg Denton <[EMAIL PROTECTED]> wrote:
>> drawview seems to resize larger but not smaller. Is this by design?
>>
>> There is a bug reported fixed, but its test case only does a one shot draw.
>> http://www.openlaszlo.org/jira/browse/LPP-4836
>>
>> Here is a test case for changing drawing size based on the one in the
>> bug report:
>>
>> <canvas debug="true">
>> <view name="trafficlight_container"
>> bgcolor="yellow" >
>> <attribute name="rad" type="number" value="50"/>
>> <handler name="oninit">
>> drawCircle();
>> </handler>
>> <method name="drawCircle" args="dv">
>> redlight.clear();
>> redlight.beginPath();
>> var r = this.rad;
>> redlight.arc(r,r,r,0,360);
>> redlight.fillStyle = red;
>> redlight.fill();
>> </method>
>> <simplelayout axis="y" spacing="0"/>
>> <text>This should be *above* the redlight</text>
>> <drawview name="redlight" />
>> <text>This should be *below* the redlight</text>
>> <button text="shrink"
>> onclick="parent.rad = parent.rad / 2; parent.drawCircle();"/>
>> <button text="expand"
>> onclick="parent.rad += parent.rad; parent.drawCircle();"/>
>> </view>
>> </canvas>
>>
>> Running:
>> proxied, compiled for swf 8
>> lps 4.2 beta 1, linux centos 5.2
>> foxfire 2.0 linux & 3.0 windows, swf 9
>>
>> Thanks.
>>
>
