Java CursorLinePainter类代码示例

import org.eclipse.jface.text.CursorLinePainter; //导入依赖的package包/类
@Override
protected void configureTextViewer(final TextViewer textViewer)
{
	ThemePlugin.getDefault().getControlThemerFactory().apply(textViewer);

	// Force line highlight color. We need to perform this after the line painter is attached, which happens after
	// the return of this method. Scheduling async seems to work.
	UIUtils.getDisplay().asyncExec(new Runnable()
	{

		public void run()
		{
			CursorLinePainter p = getCursorLinePainterInstalled(textViewer);
			if (p != null)
			{
				p.setHighlightColor(getColorManager().getColor(getCurrentTheme().getLineHighlightAgainstBG()));
			}
		}
	});
}
 

import org.eclipse.jface.text.CursorLinePainter; //导入依赖的package包/类
private CursorLinePainter getCursorLinePainterInstalled(TextViewer viewer)
{
	Listener[] listeners = viewer.getTextWidget().getListeners(3001/* StyledText.LineGetBackground */);
	for (Listener listener : listeners)
	{
		if (listener instanceof TypedListener)
		{
			TypedListener typedListener = (TypedListener) listener;
			if (typedListener.getEventListener() instanceof CursorLinePainter)
			{
				return (CursorLinePainter) typedListener.getEventListener();
			}
		}
	}
	return null;
}
 

import org.eclipse.jface.text.CursorLinePainter; //导入依赖的package包/类
/**
 * Initialize foreground, background color, current line highlight from the
 * current theme if needed.
 * 
 */
private void applyThemeEditorIfNeeded() {
	if (!initializeViewerColors) {
		StyledText styledText = viewer.getTextWidget();
		((ITheme) tokenProvider).initializeViewerColors(styledText);
		initializeViewerColors = true;
	}
	if (!updateTextDecorations) {
		try {
			// Ugly code to update "current line highlight" :
			// - get the PaintManager from the ITextViewer with reflection.
			// - get the list of IPainter of PaintManager with reflection
			// - loop for IPainter to retrieve CursorLinePainter which manages "current line
			// highlight".
			PaintManager paintManager = ClassHelper.getFieldValue(viewer, "fPaintManager", TextViewer.class);
			if (paintManager != null) {
				List<IPainter> painters = ClassHelper.getFieldValue(paintManager, "fPainters", PaintManager.class);
				if (painters != null) {
					for (IPainter painter : painters) {
						if (painter instanceof CursorLinePainter) {
							// Update current line highlight
							Color background = tokenProvider.getEditorCurrentLineHighlight();
							if (background != null) {
								((CursorLinePainter) painter).setHighlightColor(background);
							}
							updateTextDecorations = true;
						}
					}
				}
			}
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
}
 

import org.eclipse.jface.text.CursorLinePainter; //导入依赖的package包/类
private void createCursorLinePainter() {
    cursorLinePainter = new CursorLinePainter(txtViewer);
    Color color = new Color(Display.getCurrent(),PreferenceConverter.getColor(store,ILogViewerConstants.PREF_CURSORLINE_COLOR));
    cursorLinePainter.setHighlightColor(color);
    ITextViewerExtension2 extension = (ITextViewerExtension2)txtViewer;
    extension.addPainter(cursorLinePainter);
}