TIEImageLayer.Magnify

Declaration

property Magnify: TIELayerMagnification

Description

Set properties if the layer is a magnification layer.
A magnification layer allows a TIEImageLayer to show a zoomed view of the underlying content.

Note:
◼Magnify cannot be enabled for the background layer (Layer 0)
◼Use ResampleFilter to specify the quality/smoothing of the magnification

Demo

Demos\Display\Magnify2\Magnify2.dpr

Example

// Add a round magnification layer to the image

// Create our magnify layer
ImageEnView1.LayersAdd( ielkImage );
magLayer := TIEImageLayer( ImageEnView1.CurrentLayers );
magLayer.Width             := 200;
magLayer.Height            := 200;
magLayer.VisibleBox        := False;               // Hide border

magLayer.Magnify.Style     := iemEllipse;
magLayer.Magnify.Rate      := 10;                  // 10x magnification
magLayer.Magnify.Source    := iemBackgroundLayer;
magLayer.Magnify.Enabled   := true;

magLayer.Transparency      := 200;                 // 20% transparent
magLayer.UseResampleFilter := True;
magLayer.ResampleFilter    := rfFastLinear;        // Set quality

ImageEnView1.Update();

// Allow magnify layer to be moved and sized
ImageEnView1.MouseInteractLayers := [mlMoveLayers, mlResizeLayers];

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