PrinterDevice (CloudPOSSDK)

All Superinterfaces:

Device, TimeConstants
```
public interface PrinterDevice
extends Device, TimeConstants
```
The PrinterDevice interface defines the APIs for interacting with a printer device in applications. This interface is used to perform various printing operations, including text, images, and barcodes.
Obtaining the Printer Device Instance:
```
 PrinterDevice printerDevice =
         (PrinterDevice) POSTerminal.getInstance().getDevice("com.cloudpos.device.printer");
 
```
The identifier "com.cloudpos.device.printer" is used to uniquely identify the printer device, as specified by the implementation.

Functionalities:
- Control printing operations of various data types.
- Handle device-specific commands and queries.
Permissions:

Applications need to request permission to access the printer device:
```
<uses-permission android:name="android.permission.CLOUDPOS_PRINTER"/>
```
Note: It is recommended to check the printer's battery level before initiating a print operation. Avoid printing if the battery level is below 5% to prevent data loss.
See Also:

Device

Field Summary

Fields
Modifier and Type	Field and Description
`static int`	`BARCODE_CODABAR` Constant for CODABAR barcode format.
`static int`	`BARCODE_CODE128` Constant for CODE128 barcode format.
`static int`	`BARCODE_CODE39` Constant for CODE39 barcode format.
`static int`	`BARCODE_CODE93` Constant for CODE93 barcode format.
`static int`	`BARCODE_HRI_POS_ABOVE` HRI printed above the barcode.
`static int`	`BARCODE_HRI_POS_BELOW` HRI printed below the barcode.
`static int`	`BARCODE_HRI_POS_BOTH` HRI printed both above and below the barcode.
`static int`	`BARCODE_HRI_POS_NONE` HRI (Human Readable Interpretation) not printed with the barcode.
`static int`	`BARCODE_ITF` Constant for ITF (Interleaved Two of Five) barcode format.
`static int`	`BARCODE_JAN13` Constant for JAN13 (EAN13) barcode format.
`static int`	`BARCODE_JAN8` Constant for JAN8 (EAN8) barcode format.
`static int`	`BARCODE_UPC_A` Constant for UPC-A barcode format.
`static int`	`BARCODE_UPC_E` Constant for UPC-E barcode format.
`static int`	`PDF_ALL_PAGE` Constant representing all pages, typically used in PDF printing.
`static int`	`STATUS_OUT_OF_PAPER` Printer status indicating out of paper.
`static int`	`STATUS_PAPER_EXIST` Printer status indicating paper is present.

Fields inherited from interface com.cloudpos.TimeConstants
FOREVER, IMMEDIATE, MilliSECOND, SECOND

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method and Description
`android.graphics.Bitmap`	`convertHTML2image(android.content.Context context, java.lang.String htmlContent)` Synchronously converts HTML content into an image.
`void`	`convertHTML2image(android.content.Context context, java.lang.String htmlContent, PrinterHtmlListener listener)` Asynchronously converts HTML content into an image format.
`android.graphics.Bitmap`	`convertHTML2image(java.lang.String htmlContent)` Synchronously converts HTML content into an image.
`void`	`convertHTML2image(java.lang.String htmlContent, PrinterHtmlListener listener)` Asynchronously converts HTML content into an image format.
`void`	`cutPaper()` Cuts the paper if the printer supports this feature.
`Format`	`getDefaultParameters()` Retrieves the default printing format and restores it in the printer.
`void`	`open(int logicalID)` Initializes and opens the printer device for use.
`void`	`printBarcode(Format format, int barcodeType, java.lang.String barcode)` Prints a barcode with specified formatting and type.
`void`	`printBitmap(android.graphics.Bitmap bitmap)` Prints a bitmap image.
`void`	`printBitmap(Format format, android.graphics.Bitmap bitmap)` Prints a bitmap image with specified formatting.
`void`	`printBitmap(Format format, android.graphics.Bitmap bitmap, int brightness)` Prints a bitmap image with specified formatting and brightness adjustment.
`void`	`printBitmapAutoGrayscale(android.graphics.Bitmap bitmap)` Prints a bitmap image with automatic grayscale conversion.
`void`	`printBitmapAutoGrayscale(Format format, android.graphics.Bitmap bitmap)` Prints a bitmap image with automatic grayscale conversion and specified formatting.
`void`	`printBitmapAutoGrayscale(Format format, android.graphics.Bitmap bitmap, int brightness)` Prints a grayscale image using a specified format and brightness.
`void`	`printHTML(android.content.Context context, java.lang.String htmlContent)` Synchronously prints HTML content.
`void`	`printHTML(android.content.Context context, java.lang.String htmlContent, PrinterHtmlListener listener)` Asynchronously prints the specified HTML content.
`void`	`printHTML(java.lang.String htmlContent)` Synchronously prints HTML content.
`void`	`printHTML(java.lang.String htmlContent, PrinterHtmlListener listener)` Asynchronously prints the specified HTML content.
`void`	`printlnText(Format format, java.lang.String message)` Prints the provided text message on the printer with line wrapping, using the specified format.
`void`	`printlnText(java.lang.String message)` Prints the provided text message on the printer, followed by a line break.
`void`	`printPDF(java.io.InputStream pdf)` Prints content from a PDF.
`void`	`printPDF(java.io.InputStream pdf, int pageNumber)` Prints specific pages of a PDF.
`void`	`printPDFWithBrightness(java.io.InputStream pdf, int pageNumber, int brightness)` Prints a PDF with specified brightness for black and white conversion.
`void`	`printText(Format format, java.lang.String message)` Prints the provided text message on the printer using a specified format.
`void`	`printText(java.lang.String message)` Prints text on the printer.
`byte[]`	`queryESC(byte[] esc, int length, int timeout)` Queries the result of an ESC command.
`int`	`queryStatus()` Checks the paper status in the printer.
`int`	`queryVoltage(int[] capacity, int[] voltage)` Queries the battery status of the printer.
`void`	`resetFormat()` Resets the printer to its default format settings.
`int`	`sendESCCommand(byte[] esc)` Sends an ESC (escape) command to the printer.

Methods inherited from interface com.cloudpos.Device
cancelRequest, close, getFailCount, getUsageCount, open

- Field Detail
  - BARCODE_UPC_A
```
static final int BARCODE_UPC_A
```
    Constant for UPC-A barcode format. Only applicable if the printer supports direct barcode printing.
    
    See Also:
    
    Constant Field Values
  - BARCODE_UPC_E
```
static final int BARCODE_UPC_E
```
    Constant for UPC-E barcode format. Only applicable if the printer supports direct barcode printing.
    
    See Also:
    
    Constant Field Values
  - BARCODE_JAN13
```
static final int BARCODE_JAN13
```
    Constant for JAN13 (EAN13) barcode format. Only applicable if the printer supports direct barcode printing.
    
    See Also:
    
    Constant Field Values
  - BARCODE_JAN8
```
static final int BARCODE_JAN8
```
    Constant for JAN8 (EAN8) barcode format. Only applicable if the printer supports direct barcode printing.
    
    See Also:
    
    Constant Field Values
  - BARCODE_CODE39
```
static final int BARCODE_CODE39
```
    Constant for CODE39 barcode format. Only applicable if the printer supports direct barcode printing.
    
    See Also:
    
    Constant Field Values
  - BARCODE_ITF
```
static final int BARCODE_ITF
```
    Constant for ITF (Interleaved Two of Five) barcode format. Only applicable if the printer supports direct barcode printing.
    
    See Also:
    
    Constant Field Values
  - BARCODE_CODABAR
```
static final int BARCODE_CODABAR
```
    Constant for CODABAR barcode format. Only applicable if the printer supports direct barcode printing.
    
    See Also:
    
    Constant Field Values
  - BARCODE_CODE93
```
static final int BARCODE_CODE93
```
    Constant for CODE93 barcode format. Only applicable if the printer supports direct barcode printing.
    
    See Also:
    
    Constant Field Values
  - BARCODE_CODE128
```
static final int BARCODE_CODE128
```
    Constant for CODE128 barcode format. Only applicable if the printer supports direct barcode printing.
    
    See Also:
    
    Constant Field Values
  - BARCODE_HRI_POS_NONE
```
static final int BARCODE_HRI_POS_NONE
```
    HRI (Human Readable Interpretation) not printed with the barcode.
    
    See Also:
    
    Constant Field Values
  - BARCODE_HRI_POS_ABOVE
```
static final int BARCODE_HRI_POS_ABOVE
```
    HRI printed above the barcode.
    
    See Also:
    
    Constant Field Values
  - BARCODE_HRI_POS_BELOW
```
static final int BARCODE_HRI_POS_BELOW
```
    HRI printed below the barcode.
    
    See Also:
    
    Constant Field Values
  - BARCODE_HRI_POS_BOTH
```
static final int BARCODE_HRI_POS_BOTH
```
    HRI printed both above and below the barcode.
    
    See Also:
    
    Constant Field Values
  - STATUS_OUT_OF_PAPER
```
static final int STATUS_OUT_OF_PAPER
```
    Printer status indicating out of paper.
    
    See Also:
    
    Constant Field Values
  - STATUS_PAPER_EXIST
```
static final int STATUS_PAPER_EXIST
```
    Printer status indicating paper is present.
    
    See Also:
    
    Constant Field Values
  - PDF_ALL_PAGE
```
static final int PDF_ALL_PAGE
```
    Constant representing all pages, typically used in PDF printing.
    
    See Also:
    
    Constant Field Values
- Method Detail
  - open
```
void open(int logicalID)
   throws DeviceException
```
    Initializes and opens the printer device for use. This method must be called before performing any printing operations.
    
    Parameters:
    
    logicalID - The logical identifier of the printer device. This ID is used to select the specific printer when multiple devices are available.
    
    Throws:
    
    DeviceException - for standard reasons as documented in DeviceException.
  - printText
```
void printText(java.lang.String message)
        throws DeviceException
```
    Prints text on the printer.
    
    Parameters:
    
    message - The text message to be printed.
    
    Throws:
    
    DeviceException - for standard reasons as documented in DeviceException.
  - printlnText
```
void printlnText(java.lang.String message)
          throws DeviceException
```
    Prints the provided text message on the printer, followed by a line break. This method ensures that the text is printed and automatically moves to the next line after the message, facilitating the printing of multiple lines in succession.
    
    Parameters:
    
    message - The text message to be printed. The method will handle line wrapping if the text exceeds the width of the printable area.
    
    Throws:
    
    DeviceException - for standard reasons as documented in DeviceException.
  - printText
```
void printText(Format format,
               java.lang.String message)
        throws DeviceException
```
    Prints the provided text message on the printer using a specified format. This method allows customization of the text appearance such as font size, style, and alignment through a Format object. The specified format will be applied to the text message and any subsequent print operations until a new format is set.
    
    Parameters:
    
    format - The Format object that specifies the desired text formatting. Refer to the Format class for available formatting options.
    
    message - The text message to be printed. The method will apply the specified format to this text during printing.
    
    Throws:
    
    DeviceException - for standard reasons as documented in DeviceException.
  - printlnText
```
void printlnText(Format format,
                 java.lang.String message)
          throws DeviceException
```
    Prints the provided text message on the printer with line wrapping, using the specified format. This method allows for enhanced control over the text's appearance, such as font size, style, and alignment, through a Format object. After printing the message, it automatically moves to the next line.
    The printer will apply the given format not only to this text message but also to subsequent print operations until a new format is set. This allows for consistent styling across multiple lines of text.
    
    Parameters:
    
    format - The Format object specifying the text formatting. Refer to Format for available formatting options.
    
    message - The string message to be printed. The printer will apply line wrapping if the text exceeds the printable area width.
    
    Throws:
    
    DeviceException - for standard reasons as documented in DeviceException.
  - printBitmap
```
void printBitmap(android.graphics.Bitmap bitmap)
          throws DeviceException
```
    Prints a bitmap image.
    
    Parameters:
    
    bitmap - The bitmap image to be printed.
    
    Throws:
    
    DeviceException - for standard reasons as documented in DeviceException.
  - printBitmap
```
void printBitmap(Format format,
                 android.graphics.Bitmap bitmap,
                 int brightness)
          throws DeviceException
```
    Prints a bitmap image with specified formatting and brightness adjustment. This method allows customization of the bitmap's appearance, including conversion to black and white based on the specified brightness threshold.
    
    Parameters:
    
    format - The Format object specifying the bitmap's formatting. See Format for options.
    
    bitmap - The Bitmap image to be printed.
    
    brightness - Brightness threshold for image conversion (128 to 255 recommended). Higher values result in lighter prints.
    
    Throws:
    
    DeviceException - For standard error scenarios. See DeviceException for more information.
  - printBitmapAutoGrayscale
```
void printBitmapAutoGrayscale(android.graphics.Bitmap bitmap)
                       throws DeviceException
```
    Prints a bitmap image with automatic grayscale conversion. This method automatically converts the bitmap into grayscale before printing.
    
    Parameters:
    
    bitmap - The Bitmap image to be printed in grayscale.
    
    Throws:
    
    DeviceException - For standard error scenarios. See DeviceException for more information.
  - printBitmap
```
void printBitmap(Format format,
                 android.graphics.Bitmap bitmap)
          throws DeviceException
```
    Prints a bitmap image with specified formatting. This method applies the given formatting settings to the bitmap image before printing.
    
    Parameters:
    
    format - The Format object specifying the bitmap's formatting. See Format for options.
    
    bitmap - The Bitmap image to be printed.
    
    Throws:
    
    DeviceException - For standard error scenarios. See DeviceException for more information.
  - printBitmapAutoGrayscale
```
void printBitmapAutoGrayscale(Format format,
                              android.graphics.Bitmap bitmap)
                       throws DeviceException
```
    Prints a bitmap image with automatic grayscale conversion and specified formatting. This method automatically converts the bitmap into grayscale and applies additional formatting before printing.
    
    Parameters:
    
    format - The Format object specifying the bitmap's formatting. See Format for options.
    
    bitmap - The Bitmap image to be printed in grayscale.
    
    Throws:
    
    DeviceException - For standard error scenarios. See DeviceException for more information.
  - printBitmapAutoGrayscale
```
void printBitmapAutoGrayscale(Format format,
                              android.graphics.Bitmap bitmap,
                              int brightness)
                       throws DeviceException
```
    Prints a grayscale image using a specified format and brightness.
    This method allows printing a bitmap image in grayscale by configuring the print format. The printer will use the provided format settings for printing.
    
    Parameters:
    
    format - The Format object specifying the bitmap's formatting. See Format for options.
    
    bitmap - The Bitmap image to be printed in grayscale.
    
    brightness - Brightness threshold for image conversion (128 to 255 recommended). Higher values result in lighter prints.
    
    Throws:
    
    DeviceException - For standard error scenarios. See DeviceException for more information.
  - printBarcode
```
void printBarcode(Format format,
                  int barcodeType,
                  java.lang.String barcode)
           throws DeviceException
```
    Prints a barcode with specified formatting and type. This method allows for the printing of various barcode types with customized formatting.
    
    Parameters:
    
    format - The Format object specifying the barcode's formatting. See Format for options.
    
    barcodeType - The type of barcode to print, as defined by constant values.
    
    barcode - The content of the barcode to be printed.
    
    Throws:
    
    DeviceException - For standard error scenarios. See DeviceException for more information.
  - sendESCCommand
```
int sendESCCommand(byte[] esc)
            throws DeviceException
```
    Sends an ESC (escape) command to the printer.
    Use manufacturer-provided command formats for specific operations.
    
    Parameters:
    
    esc - The ESC command data.
    
    Returns:
    
    Non-negative value indicates success.
    
    Throws:
    
    DeviceException - for standard errors, detailed in DeviceException.
  - cutPaper
```
void cutPaper()
       throws DeviceException
```
    Cuts the paper if the printer supports this feature.
    
    Throws:
    
    DeviceException - for standard errors, detailed in DeviceException.
  - queryStatus
```
int queryStatus()
         throws DeviceException
```
    Checks the paper status in the printer.
    
    Returns:
    
    0 for out of paper, 1 for normal, negative values for abnormal status.
    
    Throws:
    
    DeviceException - for standard errors, detailed in DeviceException.
  - getDefaultParameters
```
Format getDefaultParameters()
                     throws DeviceException
```
    Retrieves the default printing format and restores it in the printer.
    
    Returns:
    
    The default print format.
    
    Throws:
    
    DeviceException - for standard errors, detailed in DeviceException.
  - queryESC
```
byte[] queryESC(byte[] esc,
                int length,
                int timeout)
         throws DeviceException
```
    Queries the result of an ESC command.
    
    Parameters:
    
    esc - The ESC command.
    
    length - The expected return length.
    
    timeout - The time limit for the query.
    
    Returns:
    
    Non-negative value indicates success.
    
    Throws:
    
    DeviceException - for standard errors, detailed in DeviceException.
  - printHTML
```
void printHTML(android.content.Context context,
               java.lang.String htmlContent,
               PrinterHtmlListener listener)
        throws DeviceException
```
    Asynchronously prints the specified HTML content. Before using, enable `WebView.enableSlowWholeDocumentDraw()` in your app and include `android.permission.SYSTEM_ALERT_WINDOW` permission in your manifest.
    This method triggers PrinterHtmlListener.onFinishPrinting(int) upon completion and PrinterHtmlListener.onGet(Bitmap,int) to retrieve the printed image.
    
    Parameters:
    
    context - The Android context where this method is called.
    
    htmlContent - HTML content to be printed.
    
    listener - Listener to handle print callbacks.
    
    Throws:
    
    DeviceException - for errors, as detailed in DeviceException.
  - convertHTML2image
```
void convertHTML2image(android.content.Context context,
                       java.lang.String htmlContent,
                       PrinterHtmlListener listener)
                throws DeviceException
```
    Asynchronously converts HTML content into an image format. Requires enabling `WebView.enableSlowWholeDocumentDraw()` in your app and declaring `android.permission.SYSTEM_ALERT_WINDOW` in the manifest.
    This method triggers PrinterHtmlListener.onGet(Bitmap,int) to obtain the converted image.
    
    Parameters:
    
    context - The Android context of invocation.
    
    htmlContent - HTML content to be converted.
    
    listener - Listener for image conversion callbacks.
    
    Throws:
    
    DeviceException - for errors, as specified in DeviceException.
  - printHTML
```
void printHTML(java.lang.String htmlContent,
               PrinterHtmlListener listener)
        throws DeviceException
```
    Asynchronously prints the specified HTML content. Before using, enable `WebView.enableSlowWholeDocumentDraw()` in your app and include `android.permission.SYSTEM_ALERT_WINDOW` permission in your manifest.
    This method triggers PrinterHtmlListener.onFinishPrinting(int) upon completion and PrinterHtmlListener.onGet(Bitmap,int) to retrieve the printed image.
    
    Parameters:
    
    htmlContent - HTML content to be printed.
    
    listener - Listener to handle print callbacks.
    
    Throws:
    
    DeviceException - for errors, as detailed in DeviceException.
  - convertHTML2image
```
void convertHTML2image(java.lang.String htmlContent,
                       PrinterHtmlListener listener)
                throws DeviceException
```
    Asynchronously converts HTML content into an image format. Requires enabling `WebView.enableSlowWholeDocumentDraw()` in your app and declaring `android.permission.SYSTEM_ALERT_WINDOW` in the manifest.
    This method triggers PrinterHtmlListener.onGet(Bitmap,int) to obtain the converted image.
    
    Parameters:
    
    htmlContent - HTML content to be converted.
    
    listener - Listener for image conversion callbacks.
    
    Throws:
    
    DeviceException - for errors, as specified in DeviceException.
  - printHTML
```
void printHTML(android.content.Context context,
               java.lang.String htmlContent)
        throws DeviceException
```
    Synchronously prints HTML content. Requires `WebView.enableSlowWholeDocumentDraw()` enabled in your app and `android.permission.SYSTEM_ALERT_WINDOW` permission in the manifest.
    Note: This method is synchronous. Avoid calling it on the Main UI thread as it may take time to render the WebView image.
    
    Parameters:
    
    context - The context where the method is called.
    
    htmlContent - HTML content to print.
    
    Throws:
    
    DeviceException - for documented standard errors, see DeviceException.
  - convertHTML2image
```
android.graphics.Bitmap convertHTML2image(android.content.Context context,
                                          java.lang.String htmlContent)
                                   throws DeviceException
```
    Synchronously converts HTML content into an image. Ensure `WebView.enableSlowWholeDocumentDraw()` is enabled in your app and `android.permission.SYSTEM_ALERT_WINDOW` permission is included in your manifest.
    Note: As this method is synchronous, avoid calling it on the Main UI thread to prevent delays due to WebView rendering.
    
    Parameters:
    
    context - The context from which this method is invoked.
    
    htmlContent - HTML content to be converted into an image.
    
    Throws:
    
    DeviceException - for errors as defined in DeviceException.
  - printHTML
```
void printHTML(java.lang.String htmlContent)
        throws DeviceException
```
    Synchronously prints HTML content. Requires `WebView.enableSlowWholeDocumentDraw()` enabled in your app and `android.permission.SYSTEM_ALERT_WINDOW` permission in the manifest.
    Note: This method is synchronous. Avoid calling it on the Main UI thread as it may take time to render the WebView image.
    
    Parameters:
    
    htmlContent - HTML content to print.
    
    Throws:
    
    DeviceException - for documented standard errors, see DeviceException.
  - convertHTML2image
```
android.graphics.Bitmap convertHTML2image(java.lang.String htmlContent)
                                   throws DeviceException
```
    Synchronously converts HTML content into an image. Ensure `WebView.enableSlowWholeDocumentDraw()` is enabled in your app and `android.permission.SYSTEM_ALERT_WINDOW` permission is included in your manifest.
    Note: As this method is synchronous, avoid calling it on the Main UI thread to prevent delays due to WebView rendering.
    
    Parameters:
    
    htmlContent - HTML content to be converted into an image.
    
    Throws:
    
    DeviceException - for errors as defined in DeviceException.
  - queryVoltage
```
int queryVoltage(int[] capacity,
                 int[] voltage)
          throws DeviceException
```
    Queries the battery status of the printer.
    
    Parameters:
    
    capacity - An array to store battery capacity. int[1]
    
    voltage - An array to store battery voltage.int[1]
    
    Returns:
    
    Non-negative value indicates success, negative values indicate error codes.
    
    Throws:
    
    DeviceException - for standard errors, detailed in DeviceException.
  - printPDF
```
void printPDF(java.io.InputStream pdf)
       throws DeviceException
```
    Prints content from a PDF.
    
    Parameters:
    
    pdf - The InputStream of the PDF.
    
    Throws:
    
    DeviceException - for standard errors, detailed in DeviceException.
  - printPDF
```
void printPDF(java.io.InputStream pdf,
              int pageNumber)
       throws DeviceException
```
    Prints specific pages of a PDF.
    
    Parameters:
    
    pdf - The InputStream of the PDF.
    
    pageNumber - Specify the page numbers to print, or if less than total pages, print as specified.
    
    Throws:
    
    DeviceException - for standard errors, detailed in DeviceException.
  - printPDFWithBrightness
```
void printPDFWithBrightness(java.io.InputStream pdf,
                            int pageNumber,
                            int brightness)
                     throws DeviceException
```
    Prints a PDF with specified brightness for black and white conversion.
    
    Parameters:
    
    pdf - The InputStream of the PDF.
    
    pageNumber - Specify the page numbers to print. If less than the total number of pages, only specified pages are printed.
    
    brightness - Defines the threshold for converting colors to black and white. Higher values result in lighter prints. Recommended range: 128 to 255.
    
    Throws:
    
    DeviceException - for standard errors, detailed in DeviceException.
  - resetFormat
```
void resetFormat()
          throws DeviceException
```
    Resets the printer to its default format settings.
    
    Throws:
    
    DeviceException - for standard errors, detailed in DeviceException.

Interface PrinterDevice

Field Summary

Fields inherited from interface com.cloudpos.TimeConstants

Method Summary

Methods inherited from interface com.cloudpos.Device

Field Detail

BARCODE_UPC_A

BARCODE_UPC_E

BARCODE_JAN13

BARCODE_JAN8

BARCODE_CODE39

BARCODE_ITF

BARCODE_CODABAR

BARCODE_CODE93

BARCODE_CODE128

BARCODE_HRI_POS_NONE

BARCODE_HRI_POS_ABOVE

BARCODE_HRI_POS_BELOW

BARCODE_HRI_POS_BOTH

STATUS_OUT_OF_PAPER

STATUS_PAPER_EXIST

PDF_ALL_PAGE

Method Detail

open

printText

printlnText

printText

printlnText

printBitmap

printBitmap

printBitmapAutoGrayscale

printBitmap

printBitmapAutoGrayscale

printBitmapAutoGrayscale

printBarcode

sendESCCommand

cutPaper

queryStatus

getDefaultParameters

queryESC

printHTML

convertHTML2image

printHTML

convertHTML2image

printHTML

convertHTML2image

printHTML

convertHTML2image

queryVoltage

printPDF

printPDF

printPDFWithBrightness

resetFormat