Apryse WebViewer

Class: FreeHandCreateTool

Core.Tools. FreeHandCreateTool

Represents the tool for creating Core.Annotations.FreeHandAnnotation.

new FreeHandCreateTool(docViewer)

Parameters:
Name Type Description
docViewer Core.DocumentViewer An instance of DocumentViewer.
Properties:
Name Type Description
createDelay number The delay to allow for multiple paths to be added as part of the same annotation
simplifyPen boolean Whether to simplify the annotation path when a pen input is used, defaults to false

Extends

Methods

addEventListener(type, fn [, options])

Add a handler to the given event name
Parameters:
Name Type Argument Description
type string | number The name of the event to listen to
fn function The handler to be called when the event is triggered
options object <optional>
 Optional options object for addEventListener
Properties
Name Type Description
once boolean If true then the handler will be called only once
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Overrides:
Returns:
Returns the object that 'addEventListener' is being called on
Type
object
Example
myObject.addEventListener('eventName', (eventParameter1, eventParameter2) => {
  ...
});

complete()

When called, the current freehand annotation being created is added to the AnnotationManager, ignoring the createDelay. It is only necessary to call this function if you want the annotation to be added before the createDelay elapses.
Returns:
A promise that resolves when the current freehand annotation has been added to the AnnotationManager
Type
Promise.<any>

contextMenu(e)

The function is called when a context menu should be shown. Use e.preventDefault to disable the default browser context menu.
Parameters:
Name Type Description
e The event object
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disableImmediateActionOnAnnotationSelection()

Disable whether the tool should trigger an action immediately after clicking an annotation. When this is disabled you need to first click on annotation to select it before you can drag it. This behavior is disabled by default.
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enableImmediateActionOnAnnotationSelection()

Sets if the tool should trigger actions immediately after clicking an annotation. For example, if this is enabled then you can immediately click and drag an annotation without making a separate click to select the annotation.
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Overrides:
Example
To enable this for one tool (The Pan tool, for example), this can be done:

const tool = docViewer.getTool(window.Core.Tools.ToolNames.PAN);
tool.enableImmediateActionOnAnnotationSelection();

To enable this for all selection tools, this can be done:

const allTools = Object.values(docViewer.getToolModeMap());
for (const tool of allTools) {
  if (tool instanceof Tools.AnnotationSelectTool) {
    tool.enableImmediateActionOnAnnotationSelection();
  }
}

getCreateDelay()

Get the createDelay property of the tool.
Returns:
The delay to allow for multiple paths to be added as part of the same annotation
Type
number

getDocumentViewer()

Returns the instance of DocumentViewer for this tool.
Inherited From:
Overrides:
Returns:
The instance of DocumentViewer for this tool.
Type
Core.DocumentViewer

getMouseLocation(e)

Takes an event object from a mouse event and converts the location into window coordinates
Parameters:
Name Type Description
e The event object containing mouse coordinates
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Overrides:
Returns:
Returns an object with x and y coordinates of the mouse cursor in the viewer
Type
Core.Math.Point

getSimplifyPen()

Get the simplifyPen property of the tool.
Returns:
Whether to simplify the annotation path when a pen input is used, defaults to false
Type
boolean

keyDown(e)

The function is called when a keyboard key is down.
Parameters:
Name Type Description
e The event object containing keyboard key data.
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Overrides:

mouseDoubleClick(e)

The function is called when the mouse left button is double clicked.
Parameters:
Name Type Description
e The event object containing mouse coordinates.
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mouseLeftDown(e)

The function called when the left mouse button is down
Parameters:
Name Type Description
e The event object containing mouse coordinates.
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mouseLeftUp(e)

The function called when the left mouse button is up. Typically, annotations are created and added to the annotation manager at this point.
Parameters:
Name Type Description
e The event object containing mouse coordinates.
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mouseMove(e)

The function called when the mouse moves.
Parameters:
Name Type Description
e The event object containing mouse coordinates.
Inherited From:
Overrides:

mouseRightDown(e)

The function called when the right mouse button is down.
Parameters:
Name Type Description
e The event object containing mouse coordinates.
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Overrides:

removeEventListener( [type] [, fn])

Remove a handler of the given event name and namespace (if given) or with a function reference
Parameters:
Name Type Argument Description
type string | number <optional>
 The name of the event to remove the handler of with an optional namespace.
fn function <optional>
 The handler associated with this event to be removed. If fn is undefined, all the handlers of the given event namespace will be removed. If you are not passing in this parameter then a namespace must be used with the event name.
Inherited From:
Overrides:
Returns:
Returns the object that 'removeEventListener' is being called on
Type
object
Example
myObject.removeEventListener('eventName.namespace');
myObject.removeEventListener('eventName', fn);

setCreateDelay(createDelay)

Set the createDelay property of the tool. This will change the delay for the tool to register new strokes as a new annotation. This will change the createDelay property on the instance of the tool, not the prototype.
Parameters:
Name Type Description
createDelay number The delay to allow for multiple paths to be added as part on the same annotation

setName(name)

Set the name of the tool, which can be accessed by toolObject.name
Parameters:
Name Type Description
name string Name of the tool
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Overrides:

setSimplifyPen(simplifyPen)

Set the simplifyPen property of the tool. This will change the simplifyPen property on the instance of the tool, not the prototype.
Parameters:
Name Type Description
simplifyPen boolean Whether to simplify the annotation path when a pen input is used, defaults to false

setStyles(newStyles)

Set the style for the tool, which will be applied to annotations drawn afterwards
Parameters:
Name Type Description
newStyles object if an object is used, it should contain properties of the new styles. Example of valid properties: StrokeColor, TextColor, FillColor, FontSize, Opacity, StrokeThickness, Precision, Scale, OverlayText, Style and Dashes.
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switchIn(oldTool)

The function is called when this tool is selected. Typically use for changing mouse cursors, and initializing states for the tool.
Parameters:
Name Type Description
oldTool Core.Tools.Tool The Tool class that was previously selected.
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switchOut(newTool)

The function is called when this tool is deselected. Typically use for changing mouse cursors, and cleaning up states for the tool.
Parameters:
Name Type Description
newTool Core.Tools.Tool The Tool class that was newly selected.
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trigger(type [, data])

Calls the handlers of the event name with given data
Parameters:
Name Type Argument Description
type string | number event name of which the handlers will be called.
data * <optional>
 data that will be passed to the handlers. If data is an array, it will be spread and then passed to the handlers
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Overrides:
Returns:
Returns the object that 'trigger' is being called on
Type
object
Example
myObject.trigger('eventName');
myObject.trigger('eventName', [eventParameter1, eventParameter2]);

Events

annotationAdded

Triggered when an annotation has been added to the document by the tool
Parameters:
Name Type Description
annotation Core.Annotations.Annotation The annotation that was added
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annotationCreated

Triggered when an annotation has been created by the tool
Parameters:
Name Type Description
annotations Core.Annotations.Annotation The annotation that was created
Inherited From:
Overrides: