Vista Tutorial - Zooming to mouse position

04-23-2008

Hello all,

I am trying to zoom to the mouse position in WPF. I have tried using a
viewbox and scaletransform. With the scaletransform I set the origin to the
mouseposition but when the origin changes (mouse moved) the zoomed elements
jump to another location. The viewbox gave the same problems.

Actually I just need a canvas with objects inside (like rectangles or
textboxes) and zoom the whole canvas arround the position of the mouse. Like
google maps or a similar application. It zooms to the location that your
mouse is hovering over.

Thanks!

04-24-2008

I managed to get it work using a Matrix and MatrixTransformation. When
scaling use the Matrix.ScaleAtPrepend function.

"Bruno" wrote:

Quote:

> Hello all,
>
> I am trying to zoom to the mouse position in WPF. I have tried using a
> viewbox and scaletransform. With the scaletransform I set the origin to the
> mouseposition but when the origin changes (mouse moved) the zoomed elements
> jump to another location. The viewbox gave the same problems.
>
> Actually I just need a canvas with objects inside (like rectangles or
> textboxes) and zoom the whole canvas arround the position of the mouse. Like
> google maps or a similar application. It zooms to the location that your
> mouse is hovering over.
>
> Thanks!

04-23-2008	#1 (permalink)
Bruno Guest n/a posts	Zooming to mouse position Hello all, I am trying to zoom to the mouse position in WPF. I have tried using a viewbox and scaletransform. With the scaletransform I set the origin to the mouseposition but when the origin changes (mouse moved) the zoomed elements jump to another location. The viewbox gave the same problems. Actually I just need a canvas with objects inside (like rectangles or textboxes) and zoom the whole canvas arround the position of the mouse. Like google maps or a similar application. It zooms to the location that your mouse is hovering over. Thanks!
My System Specs

04-24-2008	#2 (permalink)
Bruno Guest n/a posts	RE: Zooming to mouse position I managed to get it work using a Matrix and MatrixTransformation. When scaling use the Matrix.ScaleAtPrepend function. "Bruno" wrote: Quote: > Hello all, > > I am trying to zoom to the mouse position in WPF. I have tried using a > viewbox and scaletransform. With the scaletransform I set the origin to the > mouseposition but when the origin changes (mouse moved) the zoomed elements > jump to another location. The viewbox gave the same problems. > > Actually I just need a canvas with objects inside (like rectangles or > textboxes) and zoom the whole canvas arround the position of the mouse. Like > google maps or a similar application. It zooms to the location that your > mouse is hovering over. > > Thanks!
My System Specs

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