Thanks, Romain.
On Oct 13, 5:57 pm, "Romain Guy" <[EMAIL PROTECTED]> wrote:
> Note that this is a mistake from us. The flag (actually a setter
> method) will be back in the next version of Android. I already made
> sure of that.
>
> Without this flag, unfortunately, you need to override ViewGroup's
> drawChild()/onLayout() manually and apply the transformation yourself.
>
>
>
> On Mon, Oct 13, 2008 at 3:42 PM, Cheryl Sedota <[EMAIL PROTECTED]> wrote:
>
> > Romain,
>
> > Now that the FLAG_SUPPORT_STATIC_TRANSFORMATIONS flag is gone in the
> > 1.0 SDK, what do you recommend for such a scenario?
>
> > Thanks,
> > Cheryl
>
> > On Aug 21, 10:30 am, Erik Calissendorff <[EMAIL PROTECTED]>
> > wrote:
> >> Thanks, that was a much easier way to modify the views at drawing.
>
> >> Some tips which I learned as I tested this approach:
>
> >> You indicate that the ViewGroup supports static transformation with:
> >> this.mGroupFlags = this.mGroupFlags |
> >> FLAG_SUPPORT_STATIC_TRANSFORMATIONS;
>
> >> For the modified transformation to be performed you should return true
> >> from:
> >> boolean getChildStaticTransformation(View child, Transformation t)
>
> >> Kindest regards,
>
> >> //Erik
>
> >> On Aug 14, 5:12 pm, "Romain Guy" <[EMAIL PROTECTED]> wrote:
>
> >> > You need to translate the canvas to the right position for each child
> >> > and take into account the scroll offsets. I highly advise against
> >> > overriding dispatchDraw() because it does a number of delicate things.
> >> > The next version of the SDK will make ViewGroup.drawChild() protected
> >> > so that you can override dispatchDraw() more safely.
>
> >> > To move, scale and apply transparency to your Views at drawing time,
> >> > it's a lot simpler than what you are doing. You can simply override
> >> > the getChildStaticTransformation() method (I'm not sure of the exact
> >> > name) and make sure your ViewGroup indicates it supports static
> >> > transformations. Then simply return the appropriate Transformation
> >> > that translates, scales and applies alpha. This is what Gallery does
> >> > for instance.
>
> >> > On Thu, Aug 14, 2008 at 5:15 AM, Erik Calissendorff
>
> >> > <[EMAIL PROTECTED]> wrote:
>
> >> > > I'm trying to draw the children manually in my custom ViewGroup but
> >> > > the code below only displays the left top most child. I have tried not
> >> > > to clip the canvas and simply just call the child draw(Canvas c)
> >> > > method directly but that results in that all children are drawn on top
> >> > > of each other.
>
> >> > > What I like to accomplish is to be able to manually move,scale and
> >> > > modify the transparency of theViewat each draw call from the parent.
>
> >> > > I hope that someone can inform me how to make this work.
>
> >> > > Below is a my onLayout and dispatchDraw functions as they are now.
>
> >> > > [EMAIL PROTECTED]
> >> > > protected void onLayout(boolean changed, int l, int t, int r,
> >> > > int b)
> >> > > {
> >> > > for(int i=0;i<this.getChildCount();i++)
> >> > > {
> >> > > Viewchild = this.getChildAt(i);
> >> > > Rectrect=this.mCellPositions[i];
> >> > >
> >> > > child.layout(rect.left,rect.top,rect.right,rect.bottom);
> >> > > }
> >> > > }
>
> >> > > [EMAIL PROTECTED]
> >> > > protected void dispatchDraw(Canvas canvas) {
> >> > > for(int i=0;i<this.getChildCount();i++)
> >> > > {
> >> > > Viewview= this.getChildAt(i);
> >> > > Rectcell=this.mCellPositions[i];
> >> > > canvas.save();
> >> > > if(canvas.clipRect(cell,Op.REPLACE))
> >> > > {
> >> > >
> >> > > if(!canvas.quickReject(view.getLeft(),view.getTop(),
> >> > >view.getRight(),view.getBottom(), EdgeType.BW))
> >> > > {
> >> > > view.draw(canvas);
> >> > > }
> >> > > }
> >> > > canvas.restore();
> >> > > }
> >> > > }
>
> >> > --
> >> > Romain Guywww.curious-creature.org
>
> --
> Romain Guywww.curious-creature.org
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