org.cef.handler

接口 CefPrintHandler

所有超级接口:

CefNative

所有已知实现类:

CefPrintHandlerAdapter

public interface CefPrintHandler
extends CefNative

Implement this interface to handle printing on Linux. The methods of this class will be called on the browser process UI thread. (实现此接口以在Linux上处理打印。此类的方法将在浏览器进程UI线程上调用。)

方法概要

限定符和类型	方法和说明
java.awt.Dimension	getPdfPaperSize(int deviceUnitsPerInch) Called to retrieve the page size when printToPDF is requested for a browser. (当浏览器请求printToPDF时，调用此方法来检索页面大小。)
boolean	onPrintDialog(CefBrowser browser, boolean hasSelection, CefPrintDialogCallback callback) Called to show the print dialog. (调用以显示打印对话框。)
boolean	onPrintJob(CefBrowser browser, java.lang.String documentName, java.lang.String pdfFilePath, CefPrintJobCallback callback) Called to send the print job to the printer. (调用以将打印作业发送到打印机。)
void	onPrintReset(CefBrowser browser) Called to reset client state related to printing. (调用以重置与打印有关的客户端状态。)
void	onPrintSettings(CefBrowser browser, CefPrintSettings settings, boolean getDefaults) Called to get print settings. (调用以获取打印设置。)
void	onPrintStart(CefBrowser browser) Called when printing has started. (开始打印时调用。)

从接口继承的方法 org.cef.callback.CefNative

getNativeRef, setNativeRef

方法详细资料

getPdfPaperSize

java.awt.Dimension getPdfPaperSize(int deviceUnitsPerInch)

Called to retrieve the page size when printToPDF is requested for a browser. (当浏览器请求printToPDF时，调用此方法来检索页面大小。)

参数:

deviceUnitsPerInch - The DPI of the print. Use this to calculate the page size to use. (-打印的DPI。使用它来计算要使用的页面大小。)

返回:

The page size in microns. (页面大小（以微米为单位）。)

onPrintDialog

boolean onPrintDialog(CefBrowser browser,
                      boolean hasSelection,
                      CefPrintDialogCallback callback)

Called to show the print dialog. (调用以显示打印对话框。)

参数:

browser - The corresponding browser. (-相应的浏览器。)

hasSelection - True if the user has selected a region of the page to print. (-如果用户选择了要打印的页面区域，则为True。)

callback - Callback to execute after the dialog is dismissed. (-取消对话框后执行回调。)

返回:

True if the dialog will be displayed or false to cancel the printing immediately. (如果将显示对话框，则为True，否则为false，以立即取消打印。)

onPrintJob

boolean onPrintJob(CefBrowser browser,
                   java.lang.String documentName,
                   java.lang.String pdfFilePath,
                   CefPrintJobCallback callback)

Called to send the print job to the printer. (调用以将打印作业发送到打印机。)

参数:

browser - The corresponding browser. (-相应的浏览器。)

documentName - Name of the document that is printing. (-正在打印的文档名称。)

pdfFilePath - Path to the PDF file that contains the document contents. (-包含文档内容的PDF文件的路径。)

callback - Callback to execute after the print job has completed. (-打印作业完成后执行回调。)

返回:

True if the job will proceed or false to cancel the printing immediately. (如果作业将继续，则为True，否则为false，以立即取消打印。)

onPrintReset

void onPrintReset(CefBrowser browser)

Called to reset client state related to printing. (调用以重置与打印有关的客户端状态。)

参数:

browser - The corresponding browser. (-相应的浏览器。)

onPrintSettings

void onPrintSettings(CefBrowser browser,
                     CefPrintSettings settings,
                     boolean getDefaults)

Called to get print settings. (调用以获取打印设置。)

参数:

browser - The corresponding browser. (-相应的浏览器。)

settings - Populate with the desired print settings. Do not keep a reference to this object outside of this callback. (-用所需的打印设置填充。不要在此回调之外保留对该对象的引用。)

getDefaults - If true |settings| should be populated with the default print settings. (-如果为true |设置|应该使用默认打印设置进行填充。)

onPrintStart

void onPrintStart(CefBrowser browser)

Called when printing has started. This method will be called before the other onPrint*() methods and irrespective of how printing was initiated (e.g. CefBrowser::print(), JavaScript window.print() or PDF extension print button). (开始打印时调用。该方法将在其他onPrint *（）方法之前调用，并且无论如何启动打印（例如CefBrowser :: print（），JavaScript window.print（）或PDF扩展打印按钮）。)

参数:

browser - The corresponding browser. (-相应的浏览器。)