EPadLink ePad Vision Manual do Utilizador descarregar pdf (Página 25)

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Integration Guide (ePad-vision SDK for Chrome & Firefox)

{"command":101," xAxis": 100,"yAxis":100, "pressure ":10000 , "timeStamp ":111111111 }

Parameter

Description

Command

Number identifying the command. 101 for signature event

xAxis

Point x as number

yAxis

Point y as number

Pressure

Pressure as number

Timestamp

Timestamp as long.

9.10 – Widget Event (Chrome only)

Widget events are reported as output message.

No input message, event data is sent as an output message.

Output Message

{"command":102," widgetID":1," widgetType":2, "eventCode":1 }

Parameter

Description

Command

Number identifying the command. 102 for widget event

Widgetid

Event source widget ID as number

Widgettype

Type of widget as number (button, radio button or check box) etc.

Eventcode

Event type as number (widget created, deleted, clicked or status

changed) etc.

Detail description for widgettype and EventCode see section 9.8

10.0 – Signature Drawing

The signature points reported from the device can be drawn on an HTML 5 Canvas object. Refer to the

sample extension for drawing the signature points and scaling of the signature.

11.0 – Instructions to run sample application

Before running the sample web page from the SDK/Sample folder one has to install the Chrome Native

Messaging Host and Chrome Extension for the Chrome browser and the Firefox Extension for Firefox

Follow the quick instructions to install these.

11.1 –Chrome Extension installation and configuration

11.1.1 – Windows and Linux

1. Open the Chrome browser, type and navigate to the URL chrome://extensions/ or

else Go settings->Extensions.

2. Click on LoadUnpackedExtension and choose Extension folder (<SDK

location>\Sample\ChromeExtension). Confirm the installation by clicking on the OK

button in browse dialog.

3. Confirm and accept the permission dialog displayed.

4. Make a note of the extension ID displayed in the extension window.

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