com.tplan.robot.imagecomparison.tesseractocr

Class TesseractVersionRetriever

java.lang.Object

java.lang.Thread

com.tplan.robot.imagecomparison.tesseractocr.TesseractVersionRetriever

All Implemented Interfaces:

PreferenceComponentManager, WindowListener, Runnable, EventListener

public class TesseractVersionRetriever
extends Thread
implements PreferenceComponentManager, WindowListener

Check whether Tesseract is installed and retrieve its version. The class implements the PreferenceComponentManager interface so that it can be used to update a message pane displayed in the preferences or in a parameter list.

Since:

3.5

T-Plan Robot Enterprise, (C) 2009-2022 T-Plan Limited. All rights reserved.

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Thread

Thread.State, Thread.UncaughtExceptionHandler

Field Summary

Fields

Modifier and Type	Field and Description
static String	START_HTML

Fields inherited from class java.lang.Thread

MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

Constructor Summary

Constructors

Constructor and Description
TesseractVersionRetriever(JEditorPane component, int delayMs)

Method Summary

Modifier and Type	Method and Description
void	componentCreated(Preference p, Object component, Object container) Called when the preference GUI component gets created.
static String	getTesseractVersion(boolean forceCheck) Get the Tesseract version string as it is printed out by the engine when called with the -v CLI option, such as for example "3.00" or "3.02-02".
void	goingToLoad(Preference p, Object component, Object container, Object configuration) Called when the component is about to be loaded with the preference value.
void	run()
void	savePerformed(Preference p, Object component, Object container, Object configuration) Called after the preference value is retrieved from the component and saved back to the configuration object.
void	windowActivated(WindowEvent e)
void	windowClosed(WindowEvent e)
void	windowClosing(WindowEvent e)
void	windowDeactivated(WindowEvent e)
void	windowDeiconified(WindowEvent e)
void	windowIconified(WindowEvent e)
void	windowOpened(WindowEvent e)

Methods inherited from class java.lang.Thread

activeCount, checkAccess, countStackFrames, currentThread, destroy, dumpStack, enumerate, getAllStackTraces, getContextClassLoader, getDefaultUncaughtExceptionHandler, getId, getName, getPriority, getStackTrace, getState, getThreadGroup, getUncaughtExceptionHandler, holdsLock, interrupt, interrupted, isAlive, isDaemon, isInterrupted, join, join, join, resume, setContextClassLoader, setDaemon, setDefaultUncaughtExceptionHandler, setName, setPriority, setUncaughtExceptionHandler, sleep, sleep, start, stop, stop, suspend, toString, yield

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

START_HTML

public static final String START_HTML

Constructor Detail

TesseractVersionRetriever

public TesseractVersionRetriever(JEditorPane component,
                                 int delayMs)

Method Detail

componentCreated

public void componentCreated(Preference p,
                             Object component,
                             Object container)

Description copied from interface: PreferenceComponentManager

Called when the preference GUI component gets created.

Specified by:

componentCreated in interface PreferenceComponentManager

Parameters:

p - the preference.

component - the GUI component which will be used to display and edit the preference value.

container - the preference container.

goingToLoad

public void goingToLoad(Preference p,
                        Object component,
                        Object container,
                        Object configuration)

Description copied from interface: PreferenceComponentManager

Called when the component is about to be loaded with the preference value.

Specified by:

goingToLoad in interface PreferenceComponentManager

Parameters:

p - the preference.

component - the GUI component which will be used to display and edit the preference value.

container - the preference container.

configuration - the configuration (map of params and values) which contains the preference value.

savePerformed

public void savePerformed(Preference p,
                          Object component,
                          Object container,
                          Object configuration)

Description copied from interface: PreferenceComponentManager

Called after the preference value is retrieved from the component and saved back to the configuration object.

Specified by:

savePerformed in interface PreferenceComponentManager

Parameters:

p - the preference.

component - the GUI component which will be used to display and edit the preference value.

container - the preference container.

configuration - the configuration (map of params and values) which contains the preference value.

run

public void run()

Specified by:

run in interface Runnable

Overrides:

run in class Thread

getTesseractVersion

public static String getTesseractVersion(boolean forceCheck)

Get the Tesseract version string as it is printed out by the engine when called with the -v CLI option, such as for example "3.00" or "3.02-02". The path to Tesseract is defined through the preferences.

Parameters:

forceCheck - when set to false the class will return the cached result (if available) instead of calling the engine.

Returns:

the Tesseract OCR version.

windowOpened

public void windowOpened(WindowEvent e)

Specified by:

windowOpened in interface WindowListener

windowClosing

public void windowClosing(WindowEvent e)

Specified by:

windowClosing in interface WindowListener

windowClosed

public void windowClosed(WindowEvent e)

Specified by:

windowClosed in interface WindowListener

windowIconified

public void windowIconified(WindowEvent e)

Specified by:

windowIconified in interface WindowListener

windowDeiconified

public void windowDeiconified(WindowEvent e)

Specified by:

windowDeiconified in interface WindowListener

windowActivated

public void windowActivated(WindowEvent e)

Specified by:

windowActivated in interface WindowListener

windowDeactivated

public void windowDeactivated(WindowEvent e)

Specified by:

windowDeactivated in interface WindowListener