Java TextLayout类代码示例

import org.eclipse.swt.graphics.TextLayout; //导入依赖的package包/类
/**
 * <p>
 * Creates and initializes the text layout used to compute the size hint.
 * </p>
 * 
 * @since 3.2
 */
private void createTextLayout() {
	fTextLayout= new TextLayout(fBrowser.getDisplay());
	
	// Initialize fonts
	String symbolicFontName= fSymbolicFontName == null ? JFaceResources.DIALOG_FONT : fSymbolicFontName;
	Font font = JFaceResources.getFont(symbolicFontName);
	fTextLayout.setFont(font);
	fTextLayout.setWidth(-1);
	font = JFaceResources.getFontRegistry().getBold(symbolicFontName);
	fBoldStyle = new TextStyle(font, null, null);
	
	// Compute and set tab width
	fTextLayout.setText("    ");
	int tabWidth = fTextLayout.getBounds().width;
	fTextLayout.setTabs(new int[] {tabWidth});
	
	fTextLayout.setText("");
}
 

import org.eclipse.swt.graphics.TextLayout; //导入依赖的package包/类
/**
 * Creates and initializes the text layout used to compute the size hint.
 * 
 * @since 3.2
 */
private void createTextLayout()
{
	fTextLayout = new TextLayout(fBrowser.getDisplay());

	// Initialize fonts
	String symbolicFontName = fSymbolicFontName == null ? JFaceResources.DIALOG_FONT : fSymbolicFontName;
	Font font = JFaceResources.getFont(symbolicFontName);
	fTextLayout.setFont(font);
	fTextLayout.setWidth(-1);
	font = JFaceResources.getFontRegistry().getBold(symbolicFontName);
	fBoldStyle = new TextStyle(font, null, null);

	// Compute and set tab width
	fTextLayout.setText("    "); //$NON-NLS-1$
	int tabWidth = fTextLayout.getBounds().width;
	fTextLayout.setTabs(new int[] { tabWidth });
	fTextLayout.setText(""); //$NON-NLS-1$
}
 

import org.eclipse.swt.graphics.TextLayout; //导入依赖的package包/类
public static String shortenText(final GC gc, String text, final int width, final String ellipses) {

		if (gc.textExtent(text, 0).x <= width) {
			return text;
		}

		final int ellipseWidth = gc.textExtent(ellipses, 0).x;
		final int length = text.length();
		final TextLayout layout = new TextLayout(gc.getDevice());
		layout.setText(text);

		int end = layout.getPreviousOffset(length, SWT.MOVEMENT_CLUSTER);
		while (end > 0) {
			text = text.substring(0, end);
			final int l = gc.textExtent(text, 0).x;
			if (l + ellipseWidth <= width) {
				break;
			}
			end = layout.getPreviousOffset(end, SWT.MOVEMENT_CLUSTER);
		}
		layout.dispose();
		return end == 0 ? text.substring(0, 1) : text + ellipses;
	}
 

import org.eclipse.swt.graphics.TextLayout; //导入依赖的package包/类
public int getPreferredHeight(LayerCell cell, GC gc, IConfigRegistry configRegistry) {
	if (innerTagFactory == null) {
		innerTagFactory = new XliffInnerTagFactory(placeHolderBuilder);
	}
	innerTagFactory.reset();
	TextLayout layout = getCellTextLayout(cell);

	int counts = layout.getLineCount();
	int contentHeight = 0;
	for (int i = 0; i < counts; i++) {
		contentHeight += layout.getLineBounds(i).height;
	}
	layout.dispose();
	contentHeight += Math.max(counts - 1, 0) * SEGMENT_LINE_SPACING;
	contentHeight += 4;// 加上编辑模式下，StyledTextCellEditor的边框
	contentHeight += topPadding;
	contentHeight += bottomPadding;
	return contentHeight;
}
 

import org.eclipse.swt.graphics.TextLayout; //导入依赖的package包/类
public TextLayout getTextLayout(GC gc, GridItem item, int columnIndex, boolean innerTagStyled, boolean drawInnerTag) {
	TextLayout layout = new TextLayout(gc.getDevice());
	layout.setFont(font);
	layout.setTabs(new int[]{tabWidth});
	innerTagFactory.reset();
	
	String displayStr = "";
	try{
		displayStr = InnerTagUtil.resolveTag(innerTagFactory.parseInnerTag(item.getText(columnIndex)));
	}catch (NullPointerException e) {
		return null;
	}
	layout.setText(displayStr);
	int width = getBounds().width - leftMargin - rightMargin;
	layout.setWidth(width < 1 ? 1 : width);
	layout.setSpacing(Constants.SEGMENT_LINE_SPACING);
	layout.setAlignment(SWT.LEFT);
	layout.setOrientation(item.getParent().getOrientation());
	if (displayStr.length() != 0 && innerTagStyled) {
		attachInnertTagStyle(gc, layout, drawInnerTag);
	}
	return layout;
}
 

import org.eclipse.swt.graphics.TextLayout; //导入依赖的package包/类
protected void drawInnerTag(GC gc, TextLayout layout) {
	String displayStr = layout.getText();
	List<InnerTagBean> innerTagBeans = innerTagFactory.getInnerTagBeans();
	Rectangle bounds = getBounds();
	for (InnerTagBean innerTagBean : innerTagBeans) {
		String placeHolder = placeHolderBuilder.getPlaceHolder(innerTagBeans, innerTagBeans.indexOf(innerTagBean));
		int start = displayStr.indexOf(placeHolder);
		if (start == -1) {
			continue;
		}			
		if (gc != null) {
			Point p = layout.getLocation(start, false);
			int x = bounds.x + p.x + leftMargin;
			x += SEGMENT_LINE_SPACING;

			Point tagSize = tagRender.calculateTagSize(innerTagBean);
			int lineIdx = layout.getLineIndex(start);
			Rectangle r = layout.getLineBounds(lineIdx);
			int y = bounds.y + p.y + topMargin + r.height / 2 - tagSize.y /2;				
			tagRender.draw(gc, innerTagBean, x, y - layout.getAscent());
		}
	}
}
 

import org.eclipse.swt.graphics.TextLayout; //导入依赖的package包/类
public static void configure(TextLayout textLayout) {
	String text = textLayout.getText();
	Document doc = new Document(text);
	ITokenScanner scanner = getRecipeScanner(doc);
	scanner.setRange(doc, 0, doc.getLength());
	IToken token;
	while ((token = scanner.nextToken()) != Token.EOF) {
		int offset = scanner.getTokenOffset();
		int length = scanner.getTokenLength();
		Object data = token.getData();
		if (data != null && data instanceof TextStyle) {
			TextStyle textStyle = (TextStyle) data;
			textLayout.setStyle(textStyle, offset, offset + length - 1);
		}
	}
}
 

import org.eclipse.swt.graphics.TextLayout; //导入依赖的package包/类
public static void configure(TextLayout textLayout) {
	String text = textLayout.getText();
	Document doc = new Document(text);
	ITokenScanner scanner = getRecipeScanner(doc);
	scanner.setRange(doc, 0, doc.getLength());
	IToken token;
	while ((token = scanner.nextToken()) != Token.EOF) {
		int offset = scanner.getTokenOffset();
		int length = scanner.getTokenLength();
		Object data = token.getData();
		if (data != null && data instanceof TextStyle) {
			TextStyle textStyle = (TextStyle) data;
			textLayout.setStyle(textStyle, offset, offset + length - 1);
		}
	}
	scanner = null;
	doc = null;
}
 

import org.eclipse.swt.graphics.TextLayout; //导入依赖的package包/类
/**
 * @see Graphics#drawTextLayout(TextLayout, int, int, int, int, Color,
 *      Color)
 */
public void drawTextLayout(TextLayout layout, int x, int y,
		int selectionStart, int selectionEnd, Color selectionForeground,
		Color selectionBackground) {
	TextLayout scaled = zoomTextLayout(layout);
	if (scaled == null) {
		return;
	}
	try {
		graphics.drawTextLayout(scaled,
				(int) Math.floor(x * zoom + fractionalX),
				(int) Math.floor(y * zoom + fractionalY), selectionStart,
				selectionEnd, selectionBackground, selectionForeground);
	} finally {
		scaled.dispose();
	}
}
 

import org.eclipse.swt.graphics.TextLayout; //导入依赖的package包/类
Point getPointInBox(TextFragmentBox box, int offset, int index,
		boolean trailing) {
	offset -= box.offset;
	offset = Math.min(box.length, offset);
	Point result = new Point(0, box.getTextTop());
	if (bidiInfo == null) {
		if (trailing && offset < box.length)
			offset++;
		String substring = getText().substring(box.offset,
				box.offset + offset);
		result.x = getTextUtilities().getTextExtents(substring, getFont()).width;
	} else {
		TextLayout layout = FlowUtilities.getTextLayout();
		layout.setFont(getFont());
		String fragString = getBidiSubstring(box, index);
		layout.setText(fragString);
		offset += getBidiPrefixLength(box, index);
		result.x = layout.getLocation(offset, trailing).x;
		if (isMirrored())
			result.x = box.width - result.x;
	}
	result.x += box.getX();
	return result;
}
 

import org.eclipse.swt.graphics.TextLayout; //导入依赖的package包/类
public TextLayout getTextLayout(GC gc, GridItem item, int columnIndex, boolean innerTagStyled, boolean drawInnerTag) {
	TextLayout layout = new TextLayout(gc.getDevice());
	layout.setFont(JFaceResources.getFont(net.heartsome.cat.ts.ui.Constants.MATCH_VIEWER_TEXT_FONT));
	innerTagFactory.reset();
	
	String displayStr = "";
	try{
		displayStr = InnerTagUtil.resolveTag(innerTagFactory.parseInnerTag(item.getText(columnIndex)));
	}catch (NullPointerException e) {
		return null;
	}
	layout.setText(displayStr);
	int width = getBounds().width - leftMargin - rightMargin;
	layout.setWidth(width < 1 ? 1 : width);
	layout.setSpacing(Constants.SEGMENT_LINE_SPACING);
	layout.setAlignment(SWT.LEFT);

	if (displayStr.length() != 0 && innerTagStyled) {
		attachInnertTagStyle(gc, layout, drawInnerTag);
	}
	return layout;
}
 

import org.eclipse.swt.graphics.TextLayout; //导入依赖的package包/类
protected void drawBlankString( Graphics g, String s )
{
	TextLayout tl = new TextLayout( Display.getCurrent( ) );

	// bidi_hcg: Apply text direction
	tl.setOrientation( this.rtl ? SWT.RIGHT_TO_LEFT : SWT.LEFT_TO_RIGHT );
	
	tl.setText( s );
	Rectangle rc = tl.getBounds( );

	int left = ( getClientArea( ).width - rc.width ) / 2;
	int top = ( getClientArea( ).height - rc.height ) / 2;

	g.drawText( s, getClientArea( ).x + left, getClientArea( ).y + top );
	tl.dispose();
}
 

import org.eclipse.swt.graphics.TextLayout; //导入依赖的package包/类
/**
 * Convenience method
 * 
 * @param inWidget
 *            {@link StyledText}
 * @return {@link PaintObjectListener}
 */
public static PaintObjectListener getPaintObjectListener(
        final StyledText inWidget) {
	return new PaintObjectListener() {
		@Override
		public void paintObject(final PaintObjectEvent inEvent) {
			final Display lDisplay = inEvent.display;
			final StyleRange lStyle = inEvent.style;
			final int lPosition = inEvent.x + lStyle.metrics.width
			        - BULLET_WIDTH + 2;
			Font lFont = lStyle.font;
			if (lFont == null)
				lFont = inWidget.getFont();
			final TextLayout lLayout = new TextLayout(lDisplay);
			lLayout.setAscent(inEvent.ascent);
			lLayout.setDescent(inEvent.descent);
			lLayout.setFont(lFont);
			lLayout.setText(String.format("%s.", inEvent.bulletIndex + 1)); //$NON-NLS-1$
			lLayout.draw(inEvent.gc, lPosition, inEvent.y);
			lLayout.dispose();
		}
	};
}
 

import org.eclipse.swt.graphics.TextLayout; //导入依赖的package包/类
private TextLayout getTextLayout(Plugin plugin, boolean selected) {
    final TextLayout textLayout = new TextLayout(display);
    int length1 = plugin.getName().length();
    String text = plugin.getName() + "\n \n" + plugin.getDescription();
    textLayout.setText(text);
    textLayout.setStyle(selected ? styleTitleSelected : styleTitle, 0, length1);
    textLayout.setStyle(styleGap, length1 + 1, length1 + 2);
    textLayout.setStyle(selected ? styleRowSelected : styleRow, length1 + 3, text.length());
    return textLayout;
}
 

import org.eclipse.swt.graphics.TextLayout; //导入依赖的package包/类
protected TextLayout getTextLayout(int lineIndex, int orientation, int width, int lineSpacing, Object obj,
		Method proceed, Object[] args) throws Exception {
	args[0] = lineIndex;
	args[1] = orientation;
	args[2] = width;
	args[3] = lineSpacing;
	return (TextLayout) proceed.invoke(obj, args);
}