function Leadtools.Annotations.Core.AnnRenderingEngine.burnToRectWithDpi( destinationRect , sourceDpiX , sourceDpiY , targetDpiX , targetDpiY )
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Parameter | Type | Description |
---|---|---|
destinationRect | LeadRectD | The destination rectangle in container coordinates. |
sourceDpiX | double | Horizontal source (screen) DPI. |
sourceDpiY | double | Vertical source (screen) DPI. |
targetDpiX | double | Horizontal target (image) DPI. |
targetDpiY | double | Vertical target (image) DPI. |
All visible objects in this container will be drawn into the current context.
This method uses the resolution (DPI) values specified and not the values stored in the container. Use this method when burning the container objects into any context.
To burn a container into the context of the image being automated, use Burn.
example: function SiteLibrary_DefaultPage$example(viewer) { // viewer is ImageViewer this._automation is working on // Get the container var container = this._automation.get_container(); var inch = 720.0; // Add a red line object, from 1in 1in to 2in 2in var lineObj = new Leadtools.Annotations.Core.AnnPolylineObject(); lineObj.get_points().add(Leadtools.LeadPointD.create(1 * inch, 1 * inch)); lineObj.get_points().add(Leadtools.LeadPointD.create(2 * inch, 2 * inch)); lineObj.set_stroke(Leadtools.Annotations.Core.AnnStroke.create(Leadtools.Annotations.Core.AnnSolidColorBrush.create("red"), Leadtools.LeadLengthD.create(1))); container.get_children().add(lineObj); // Add a blue on yellow rectangle from 3in 3in to 4in 4in var rectObj = new Leadtools.Annotations.Core.AnnRectangleObject(); rectObj.set_rect(Leadtools.LeadRectD.create(3 * inch, 3 * inch, 1 * inch, 1 * inch)); rectObj.set_stroke(Leadtools.Annotations.Core.AnnStroke.create(Leadtools.Annotations.Core.AnnSolidColorBrush.create("blue"), Leadtools.LeadLengthD.create(1))); rectObj.set_fill(Leadtools.Annotations.Core.AnnSolidColorBrush.create("yellow")); container.get_children().add(rectObj); // To burn the annotations, we need a canvas context and a new rendering engine // Get the background canvas of the viewer var canvas = viewer.get_backCanvas(); var context = canvas.getContext("2d"); // Create a new rendering engine for this container and context var renderingEngine = new Leadtools.Annotations.Rendering.AnnHtml5RenderingEngine(container, context, false); // Set the resolution var dpiX = viewer.get_screenDpiX(); var dpiY = viewer.get_screenDpiY(); var xRes = viewer.get_imageDpiX(); var yRes = viewer.get_imageDpiY(); // Burn it renderingEngine.burnToRectWithDpi(Leadtools.LeadRectD.get_empty(), dpiX, dpiY, xRes, yRes); // Delete the objects we added this._automation.selectObjects(container.get_children()); this._automation.deleteSelectedObjects(); // Invalidate to see the burned objects viewer.invalidate(); },