Represents the annotation rendering engine implementation for the HTML 5 platform using a Canvas element.
function lt.Annotations.Rendering.AnnHtml5RenderingEngineextends lt.Annotations.Core.AnnRenderingEngine
class lt.Annotations.Rendering.AnnHtml5RenderingEngine()extends lt.Annotations.Core.AnnRenderingEngine
AnnHtml5RenderingEngine is the rendering engine implementation for the HTML 5 platform. This class derives from AnnRenderingEngine and implements the required methods to render annotation objects to an HTML 5 canvas.
The HTML 5 image viewer automation control can create an instance of the AnnHtml5RenderingEngine and uses it to create an automated annotation user interface tied with the LEADTOOLS HTML 5 ImageViewer control.
In addition to the above, this class contains the following members:
| Member | Description |
|---|---|
| Context | This is the destination HTML 5 canvas context 2d object to use when rendering and the annotation objects. |
| SetFont | Represents a helper method to set an AnnFont in a HTML 5 canvas context |
| MeasureTextHeight | Represents a helper method to measure the text height of an AnnFont in a HTML 5 canvas context |
| SetFill | Represents a helper method to set an AnnBrush in a HTML 5 canvas context |
| SetFillOpacityAndBounds | Represents a helper method to set an AnnBrush with opacity and bounds in a HTML 5 canvas context |
| SetStroke | Represents a helper method to set an AnnStroke in a HTML 5 canvas context |
| DrawCurve | Represents a helper method to draw a curve in a HTML 5 canvas context |
| DrawClosedCurve | Represents a helper method to draw a closed curve in a HTML 5 canvas context |
| DrawEllipse | Represents a helper method to draw an ellipse in a HTML 5 canvas context |
| DrawPicture | Represents a helper method to draw an AnnPicture in a HTML 5 canvas context |
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