Apryse WebViewer

Class: SnippingCreateTool

Core.Tools. SnippingCreateTool

Represents the tool for snipping a page.

new SnippingCreateTool(docViewer)

Creates a new instance of the SnippingCreateTool.
Parameters:
Name Type Description
docViewer Core.DocumentViewer An instance of DocumentViewer.

Extends

Members

<static> SnippingModes

Properties:
Name Type Description
CLIPBOARD string Saves the selected area to the clipboard
DOWNLOAD string Automatically download the selected area
CROP_AND_REMOVE string Crops the selected area and removes the rest of the pages

Methods

<static> setFilenameHandler(handler)

Parameters:
Name Type Description
handler function A function that should return a Promise that resolves to a string that will be used as the filename for the snipped image.

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
Inherited From:
Returns:
Returns the object that 'addEventListener' is being called on
Type
object
Example
myObject.addEventListener('eventName', (eventParameter1, eventParameter2) => {
  ...
});

applySnipping()

Applies the currently selected snipping region.
Returns:
A promise that resolves when the snipping region have been applied.
Type
Promise.<void>

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
Inherited From:

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.
Inherited From:

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.
Inherited From:
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();
  }
}

getDocumentViewer()

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

getIsSnipping()

Checks to see if the tool is currently snipping.
Returns:
Returns true if the tool is snipping
Type
boolean

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
Inherited From:
Returns:
Returns an object with x and y coordinates of the mouse cursor in the viewer
Type
Core.Math.Point

getSnapMode(mode)

Set the snap mode that will be used to calculate the end point position.
Parameters:
Name Type Description
mode number Enum for a snapping mode for the snapping.
Inherited From:
See:

getSnippingMode()

Gets the current snipping mode.
Returns:
Returns the current snipping mode.
Type
Core.Tools.SnippingCreateTool.SnippingModes

keyDown(e)

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

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.
Inherited From:

mouseLeftDown(e)

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

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.
Inherited From:

mouseMove(e)

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

mouseRightDown(e)

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

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:
Returns:
Returns the object that 'removeEventListener' is being called on
Type
object
Example
myObject.removeEventListener('eventName.namespace');
myObject.removeEventListener('eventName', fn);

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
Inherited From:

setSnapMode(mode)

Set the snap mode that will be used to calculate the end point position
Parameters:
Name Type Description
mode number Enum for a snapping mode for the snapping.
Inherited From:
See:

setSnippingMode(snippingMode)

Sets the snipping mode for the tool.
Parameters:
Name Type Description
snippingMode Core.Tools.SnippingCreateTool.SnippingModes The crop mode to select
Example
WebViewer(...).then(instance => {
 const tool = instance.Core.documentViewer.getTool('SnippingTool');
 tool.setSnippingMode(instance.Core.Tools.SnippingCreateTool.SnippingModes.DOWNLOAD);
})

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.
Inherited From:

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.
Inherited From:

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.
Inherited From:

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
Inherited From:
Returns:
Returns the object that 'trigger' is being called on
Type
object
Example
myObject.trigger('eventName');
myObject.trigger('eventName', [eventParameter1, eventParameter2]);

Type Definitions

Events

Properties:
Name Type Description
SNIPPING_APPLIED string Core.Tools.SnipCreateTool.snippingApplied
SNIPPING_CANCELLED string Core.Tools.SnipCreateTool.snippingCancelled

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
Inherited From:

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:

snippingApplied

Triggered when snipping has been applied
Parameters:
Name Type Description
snippingInfo Object
Properties
Name Type Description
pageNumber number The page number the snipping was applied on
left number The number of points (pts) cut off the left edge
right number The number of points (pts) cut off the right edge
bottom number The number of points (pts) cut off the bottom edge
top number The number of points (pts) cut off the top edge

snippingCancelled

Triggered when snipping has been cancelled