| /******************************************************************************* |
| * Copyright (c) 2000, 2009 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.swt.graphics; |
| |
| import org.eclipse.swt.internal.C; |
| import org.eclipse.swt.internal.Compatibility; |
| import org.eclipse.swt.internal.cocoa.*; |
| import org.eclipse.swt.*; |
| |
| /** |
| * <code>TextLayout</code> is a graphic object that represents |
| * styled text. |
| * <p> |
| * Instances of this class provide support for drawing, cursor |
| * navigation, hit testing, text wrapping, alignment, tab expansion |
| * line breaking, etc. These are aspects required for rendering internationalized text. |
| * </p><p> |
| * Application code must explicitly invoke the <code>TextLayout#dispose()</code> |
| * method to release the operating system resources managed by each instance |
| * when those instances are no longer required. |
| * </p> |
| * |
| * @see <a href="http://www.eclipse.org/swt/snippets/#textlayout">TextLayout, TextStyle snippets</a> |
| * @see <a href="http://www.eclipse.org/swt/examples.php">SWT Example: CustomControlExample, StyledText tab</a> |
| * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> |
| * |
| * @since 3.0 |
| */ |
| public final class TextLayout extends Resource { |
| |
| NSTextStorage textStorage; |
| NSLayoutManager layoutManager; |
| NSTextContainer textContainer; |
| Font font; |
| String text; |
| StyleItem[] styles; |
| int stylesCount; |
| int spacing, ascent, descent, indent; |
| boolean justify; |
| int alignment; |
| int[] tabs; |
| int[] segments; |
| int wrapWidth; |
| int orientation; |
| |
| int[] lineOffsets; |
| NSRect[] lineBounds; |
| |
| static final int TAB_COUNT = 32; |
| static final int UNDERLINE_THICK = 1 << 16; |
| static final RGB LINK_FOREGROUND = new RGB (0, 51, 153); |
| int[] invalidOffsets; |
| static final char LTR_MARK = '\u200E', RTL_MARK = '\u200F', ZWS = '\u200B'; |
| |
| static class StyleItem { |
| TextStyle style; |
| int start; |
| |
| public String toString () { |
| return "StyleItem {" + start + ", " + style + "}"; |
| } |
| } |
| |
| /** |
| * Constructs a new instance of this class on the given device. |
| * <p> |
| * You must dispose the text layout when it is no longer required. |
| * </p> |
| * |
| * @param device the device on which to allocate the text layout |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if device is null and there is no current device</li> |
| * </ul> |
| * |
| * @see #dispose() |
| */ |
| public TextLayout (Device device) { |
| super(device); |
| wrapWidth = ascent = descent = -1; |
| alignment = SWT.LEFT; |
| orientation = SWT.LEFT_TO_RIGHT; |
| text = ""; |
| styles = new StyleItem[2]; |
| styles[0] = new StyleItem(); |
| styles[1] = new StyleItem(); |
| stylesCount = 2; |
| init(); |
| } |
| |
| void checkLayout() { |
| if (isDisposed()) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| } |
| |
| float[] computePolyline(int left, int top, int right, int bottom) { |
| int height = bottom - top; // can be any number |
| int width = 2 * height; // must be even |
| int peaks = Compatibility.ceil(right - left, width); |
| if (peaks == 0 && right - left > 2) { |
| peaks = 1; |
| } |
| int length = ((2 * peaks) + 1) * 2; |
| if (length < 0) return new float[0]; |
| |
| float[] coordinates = new float[length]; |
| for (int i = 0; i < peaks; i++) { |
| int index = 4 * i; |
| coordinates[index] = left + (width * i); |
| coordinates[index+1] = bottom; |
| coordinates[index+2] = coordinates[index] + width / 2; |
| coordinates[index+3] = top; |
| } |
| coordinates[length-2] = left + (width * peaks); |
| coordinates[length-1] = bottom; |
| return coordinates; |
| } |
| |
| |
| void computeRuns() { |
| if (textStorage != null) return; |
| String segmentsText = getSegmentsText(); |
| char[] chars = new char[segmentsText.length()]; |
| segmentsText.getChars(0, chars.length, chars, 0); |
| NSString str = (NSString) new NSString().alloc(); |
| str = str.initWithCharacters(chars, chars.length); |
| textStorage = (NSTextStorage)new NSTextStorage().alloc().init(); |
| layoutManager = (NSLayoutManager)new NSLayoutManager().alloc().init(); |
| layoutManager.setBackgroundLayoutEnabled(NSThread.isMainThread()); |
| textContainer = (NSTextContainer)new NSTextContainer().alloc(); |
| NSSize size = new NSSize(); |
| size.width = wrapWidth != -1 ? wrapWidth : Float.MAX_VALUE; |
| size.height = Float.MAX_VALUE; |
| textContainer.initWithContainerSize(size); |
| textStorage.addLayoutManager(layoutManager); |
| layoutManager.addTextContainer(textContainer); |
| |
| /* |
| * Bug in Cocoa. Adding attributes directly to a NSTextStorage causes |
| * output to the console and eventually a segmentation fault when printing |
| * on a thread other than the main thread. The fix is to add attributes to |
| * a separate NSMutableAttributedString and add it to text storage when done. |
| */ |
| NSMutableAttributedString attrStr = (NSMutableAttributedString)new NSMutableAttributedString().alloc(); |
| attrStr.id = attrStr.initWithString(str).id; |
| attrStr.beginEditing(); |
| Font defaultFont = font != null ? font : device.systemFont; |
| NSRange range = new NSRange(); |
| range.length = str.length(); |
| attrStr.addAttribute(OS.NSFontAttributeName, defaultFont.handle, range); |
| defaultFont.addTraits(attrStr, range); |
| //TODO ascend descent wrap |
| NSMutableParagraphStyle paragraph = (NSMutableParagraphStyle)new NSMutableParagraphStyle().alloc().init(); |
| int align = OS.NSLeftTextAlignment; |
| if (justify) { |
| align = OS.NSJustifiedTextAlignment; |
| } else { |
| switch (alignment) { |
| case SWT.CENTER: |
| align = OS.NSCenterTextAlignment; |
| break; |
| case SWT.RIGHT: |
| align = OS.NSRightTextAlignment; |
| } |
| } |
| if ((orientation & SWT.RIGHT_TO_LEFT) != 0) { |
| paragraph.setBaseWritingDirection(OS.NSWritingDirectionRightToLeft); |
| } else { |
| paragraph.setBaseWritingDirection(OS.NSWritingDirectionLeftToRight); |
| } |
| paragraph.setAlignment(align); |
| paragraph.setLineSpacing(spacing); |
| paragraph.setFirstLineHeadIndent(indent); |
| paragraph.setLineBreakMode(wrapWidth != -1 ? OS.NSLineBreakByWordWrapping : OS.NSLineBreakByClipping); |
| paragraph.setTabStops(NSArray.array()); |
| if (tabs != null && tabs.length > 0) { |
| int count = tabs.length; |
| if (count == 1) { |
| paragraph.setDefaultTabInterval(tabs[0]); |
| } else { |
| int i, pos = 0; |
| for (i = 0; i < count; i++) { |
| pos = tabs[i]; |
| NSTextTab tab = (NSTextTab)new NSTextTab().alloc(); |
| tab = tab.initWithType(OS.NSLeftTabStopType, pos); |
| paragraph.addTabStop(tab); |
| tab.release(); |
| } |
| int width = tabs[count - 1] - tabs[count - 2]; |
| for (; i < TAB_COUNT; i++) { |
| pos += width; |
| NSTextTab tab = (NSTextTab)new NSTextTab().alloc(); |
| tab = tab.initWithType(OS.NSLeftTabStopType, pos); |
| paragraph.addTabStop(tab); |
| tab.release(); |
| } |
| } |
| } |
| attrStr.addAttribute(OS.NSParagraphStyleAttributeName, paragraph, range); |
| paragraph.release(); |
| int /*long*/ textLength = str.length(); |
| for (int i = 0; i < stylesCount - 1; i++) { |
| StyleItem run = styles[i]; |
| if (run.style == null) continue; |
| TextStyle style = run.style; |
| range.location = textLength != 0 ? translateOffset(run.start) : 0; |
| range.length = translateOffset(styles[i + 1].start) - range.location; |
| Font font = style.font; |
| if (font != null) { |
| attrStr.addAttribute(OS.NSFontAttributeName, font.handle, range); |
| font.addTraits(attrStr, range); |
| } |
| Color foreground = style.foreground; |
| if (foreground != null) { |
| NSColor color = NSColor.colorWithDeviceRed(foreground.handle[0], foreground.handle[1], foreground.handle[2], 1); |
| attrStr.addAttribute(OS.NSForegroundColorAttributeName, color, range); |
| } |
| Color background = style.background; |
| if (background != null) { |
| NSColor color = NSColor.colorWithDeviceRed(background.handle[0], background.handle[1], background.handle[2], 1); |
| attrStr.addAttribute(OS.NSBackgroundColorAttributeName, color, range); |
| } |
| if (style.strikeout) { |
| attrStr.addAttribute(OS.NSStrikethroughStyleAttributeName, NSNumber.numberWithInt(OS.NSUnderlineStyleSingle), range); |
| Color strikeColor = style.strikeoutColor; |
| if (strikeColor != null) { |
| NSColor color = NSColor.colorWithDeviceRed(strikeColor.handle[0], strikeColor.handle[1], strikeColor.handle[2], 1); |
| attrStr.addAttribute(OS.NSStrikethroughColorAttributeName, color, range); |
| } |
| } |
| if (isUnderlineSupported(style)) { |
| int underlineStyle = 0; |
| switch (style.underlineStyle) { |
| case SWT.UNDERLINE_SINGLE: |
| underlineStyle = OS.NSUnderlineStyleSingle; |
| break; |
| case SWT.UNDERLINE_DOUBLE: |
| underlineStyle = OS.NSUnderlineStyleDouble; |
| break; |
| case UNDERLINE_THICK: |
| underlineStyle = OS.NSUnderlineStyleThick; |
| break; |
| case SWT.UNDERLINE_LINK: { |
| underlineStyle = OS.NSUnderlineStyleSingle; |
| if (foreground == null) { |
| NSColor color = NSColor.colorWithDeviceRed(LINK_FOREGROUND.red / 255f, LINK_FOREGROUND.green / 255f, LINK_FOREGROUND.blue / 255f, 1); |
| attrStr.addAttribute(OS.NSForegroundColorAttributeName, color, range); |
| } |
| break; |
| } |
| } |
| if (underlineStyle != 0) { |
| attrStr.addAttribute(OS.NSUnderlineStyleAttributeName, NSNumber.numberWithInt(underlineStyle), range); |
| Color underlineColor = style.underlineColor; |
| if (underlineColor != null) { |
| NSColor color = NSColor.colorWithDeviceRed(underlineColor.handle[0], underlineColor.handle[1], underlineColor.handle[2], 1); |
| attrStr.addAttribute(OS.NSUnderlineColorAttributeName, color, range); |
| } |
| } |
| } |
| if (style.rise != 0) { |
| attrStr.addAttribute(OS.NSBaselineOffsetAttributeName, NSNumber.numberWithInt(style.rise), range); |
| } |
| if (style.metrics != null) { |
| //TODO implement metrics |
| } |
| } |
| attrStr.endEditing(); |
| textStorage.setAttributedString(attrStr); |
| attrStr.release(); |
| str.release(); |
| |
| textContainer.setLineFragmentPadding(0); |
| layoutManager.glyphRangeForTextContainer(textContainer); |
| |
| int numberOfLines; |
| int /*long*/ numberOfGlyphs = layoutManager.numberOfGlyphs(), index; |
| int /*long*/ rangePtr = OS.malloc(NSRange.sizeof); |
| NSRange lineRange = new NSRange(); |
| for (numberOfLines = 0, index = 0; index < numberOfGlyphs; numberOfLines++){ |
| layoutManager.lineFragmentUsedRectForGlyphAtIndex(index, rangePtr, true); |
| OS.memmove(lineRange, rangePtr, NSRange.sizeof); |
| index = lineRange.location + lineRange.length; |
| } |
| if (numberOfLines == 0) numberOfLines++; |
| int[] offsets = new int[numberOfLines + 1]; |
| NSRect[] bounds = new NSRect[numberOfLines]; |
| for (numberOfLines = 0, index = 0; index < numberOfGlyphs; numberOfLines++){ |
| bounds[numberOfLines] = layoutManager.lineFragmentUsedRectForGlyphAtIndex(index, rangePtr, true); |
| if (numberOfLines < bounds.length - 1) bounds[numberOfLines].height -= spacing; |
| OS.memmove(lineRange, rangePtr, NSRange.sizeof); |
| offsets[numberOfLines] = (int)/*64*/lineRange.location; |
| index = lineRange.location + lineRange.length; |
| } |
| if (numberOfLines == 0) { |
| Font font = this.font != null ? this.font : device.systemFont; |
| NSFont nsFont = font.handle; |
| bounds[0] = new NSRect(); |
| bounds[0].height = Math.max(layoutManager.defaultLineHeightForFont(nsFont), ascent + descent); |
| } |
| OS.free(rangePtr); |
| offsets[numberOfLines] = (int)/*64*/textStorage.length(); |
| this.lineOffsets = offsets; |
| this.lineBounds = bounds; |
| } |
| |
| void destroy() { |
| freeRuns(); |
| font = null; |
| text = null; |
| styles = null; |
| } |
| |
| /** |
| * Draws the receiver's text using the specified GC at the specified |
| * point. |
| * |
| * @param gc the GC to draw |
| * @param x the x coordinate of the top left corner of the rectangular area where the text is to be drawn |
| * @param y the y coordinate of the top left corner of the rectangular area where the text is to be drawn |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the gc is null</li> |
| * </ul> |
| */ |
| public void draw(GC gc, int x, int y) { |
| draw(gc, x, y, -1, -1, null, null); |
| } |
| |
| /** |
| * Draws the receiver's text using the specified GC at the specified |
| * point. |
| * |
| * @param gc the GC to draw |
| * @param x the x coordinate of the top left corner of the rectangular area where the text is to be drawn |
| * @param y the y coordinate of the top left corner of the rectangular area where the text is to be drawn |
| * @param selectionStart the offset where the selections starts, or -1 indicating no selection |
| * @param selectionEnd the offset where the selections ends, or -1 indicating no selection |
| * @param selectionForeground selection foreground, or NULL to use the system default color |
| * @param selectionBackground selection background, or NULL to use the system default color |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the gc is null</li> |
| * </ul> |
| */ |
| public void draw(GC gc, int x, int y, int selectionStart, int selectionEnd, Color selectionForeground, Color selectionBackground) { |
| draw(gc, x, y, selectionStart, selectionEnd, selectionForeground, selectionBackground, 0); |
| } |
| |
| /** |
| * Draws the receiver's text using the specified GC at the specified |
| * point. |
| * <p> |
| * The parameter <code>flags</code> can include one of <code>SWT.DELIMITER_SELECTION</code> |
| * or <code>SWT.FULL_SELECTION</code> to specify the selection behavior on all lines except |
| * for the last line, and can also include <code>SWT.LAST_LINE_SELECTION</code> to extend |
| * the specified selection behavior to the last line. |
| * </p> |
| * @param gc the GC to draw |
| * @param x the x coordinate of the top left corner of the rectangular area where the text is to be drawn |
| * @param y the y coordinate of the top left corner of the rectangular area where the text is to be drawn |
| * @param selectionStart the offset where the selections starts, or -1 indicating no selection |
| * @param selectionEnd the offset where the selections ends, or -1 indicating no selection |
| * @param selectionForeground selection foreground, or NULL to use the system default color |
| * @param selectionBackground selection background, or NULL to use the system default color |
| * @param flags drawing options |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the gc is null</li> |
| * </ul> |
| * |
| * @since 3.3 |
| */ |
| public void draw(GC gc, int x, int y, int selectionStart, int selectionEnd, Color selectionForeground, Color selectionBackground, int flags) { |
| checkLayout (); |
| if (gc == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); |
| if (gc.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| if (selectionForeground != null && selectionForeground.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| if (selectionBackground != null && selectionBackground.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| NSAutoreleasePool pool = gc.checkGC(GC.CLIPPING | GC.TRANSFORM | GC.FOREGROUND); |
| try { |
| computeRuns(); |
| int length = translateOffset(text.length()); |
| if (length == 0 && flags == 0) return; |
| gc.handle.saveGraphicsState(); |
| NSPoint pt = new NSPoint(); |
| pt.x = x; |
| pt.y = y; |
| NSRange range = new NSRange(); |
| int /*long*/ numberOfGlyphs = layoutManager.numberOfGlyphs(); |
| if (numberOfGlyphs > 0) { |
| range.location = 0; |
| range.length = numberOfGlyphs; |
| layoutManager.drawBackgroundForGlyphRange(range, pt); |
| } |
| boolean hasSelection = selectionStart <= selectionEnd && selectionStart != -1 && selectionEnd != -1; |
| if (hasSelection || (flags & SWT.LAST_LINE_SELECTION) != 0) { |
| if (selectionBackground == null) selectionBackground = device.getSystemColor(SWT.COLOR_LIST_SELECTION); |
| NSColor selectionColor = NSColor.colorWithDeviceRed(selectionBackground.handle[0], selectionBackground.handle[1], selectionBackground.handle[2], selectionBackground.handle[3]); |
| NSBezierPath path = NSBezierPath.bezierPath(); |
| NSRect rect = new NSRect(); |
| if (hasSelection) { |
| int /*long*/ pRectCount = OS.malloc(C.PTR_SIZEOF); |
| range.location = translateOffset(selectionStart); |
| range.length = translateOffset(selectionEnd - selectionStart + 1); |
| int /*long*/ pArray = layoutManager.rectArrayForCharacterRange(range, range, textContainer, pRectCount); |
| int /*long*/ [] rectCount = new int /*long*/ [1]; |
| OS.memmove(rectCount, pRectCount, C.PTR_SIZEOF); |
| OS.free(pRectCount); |
| for (int k = 0; k < rectCount[0]; k++, pArray += NSRect.sizeof) { |
| OS.memmove(rect, pArray, NSRect.sizeof); |
| fixRect(rect); |
| rect.x += pt.x; |
| rect.y += pt.y; |
| rect.height = Math.max(rect.height, ascent + descent); |
| path.appendBezierPathWithRect(rect); |
| } |
| } |
| //TODO draw full selection for wrapped text |
| if ((flags & SWT.LAST_LINE_SELECTION) != 0) { |
| NSRect bounds = lineBounds[lineBounds.length - 1]; |
| rect.x = pt.x + bounds.x + bounds.width; |
| rect.y = y + bounds.y; |
| rect.width = (flags & SWT.FULL_SELECTION) != 0 ? 0x7fffffff : bounds.height / 3; |
| rect.height = Math.max(bounds.height, ascent + descent); |
| path.appendBezierPathWithRect(rect); |
| } |
| selectionColor.setFill(); |
| path.fill(); |
| } |
| if (numberOfGlyphs > 0) { |
| range.location = 0; |
| range.length = numberOfGlyphs; |
| float /*double*/ [] fg = gc.data.foreground; |
| boolean defaultFg = fg[0] == 0 && fg[1] == 0 && fg[2] == 0 && fg[3] == 1 && gc.data.alpha == 255; |
| if (!defaultFg) { |
| for (int i = 0; i < stylesCount - 1; i++) { |
| StyleItem run = styles[i]; |
| if (run.style != null && run.style.foreground != null) continue; |
| if (run.style != null && run.style.underline && run.style.underlineStyle == SWT.UNDERLINE_LINK) continue; |
| range.location = length != 0 ? translateOffset(run.start) : 0; |
| range.length = translateOffset(styles[i + 1].start) - range.location; |
| layoutManager.addTemporaryAttribute(OS.NSForegroundColorAttributeName, gc.data.fg, range); |
| } |
| } |
| range.location = 0; |
| range.length = numberOfGlyphs; |
| layoutManager.drawGlyphsForGlyphRange(range, pt); |
| if (!defaultFg) { |
| range.location = 0; |
| range.length = length; |
| layoutManager.removeTemporaryAttribute(OS.NSForegroundColorAttributeName, range); |
| } |
| NSPoint point = new NSPoint(); |
| for (int j = 0; j < stylesCount; j++) { |
| StyleItem run = styles[j]; |
| TextStyle style = run.style; |
| if (style == null) continue; |
| boolean drawUnderline = style.underline && !isUnderlineSupported(style); |
| drawUnderline = drawUnderline && (j + 1 == stylesCount || !style.isAdherentUnderline(styles[j + 1].style)); |
| boolean drawBorder = style.borderStyle != SWT.NONE; |
| drawBorder = drawBorder && (j + 1 == stylesCount || !style.isAdherentBorder(styles[j + 1].style)); |
| if (!drawUnderline && !drawBorder) continue; |
| int end = j + 1 < stylesCount ? translateOffset(styles[j + 1].start - 1) : length; |
| for (int i = 0; i < lineOffsets.length - 1; i++) { |
| int lineStart = untranslateOffset(lineOffsets[i]); |
| int lineEnd = untranslateOffset(lineOffsets[i + 1] - 1); |
| if (drawUnderline) { |
| int start = run.start; |
| for (int k = j; k > 0 && style.isAdherentUnderline(styles[k - 1].style); k--) { |
| start = styles[k - 1].start; |
| } |
| start = translateOffset(start); |
| if (!(start > lineEnd || end < lineStart)) { |
| range.location = Math.max(lineStart, start); |
| range.length = Math.min(lineEnd, end) + 1 - range.location; |
| if (range.length > 0) { |
| int /*long*/ pRectCount = OS.malloc(C.PTR_SIZEOF); |
| int /*long*/ pArray = layoutManager.rectArrayForCharacterRange(range, range, textContainer, pRectCount); |
| int /*long*/ [] rectCount = new int /*long*/ [1]; |
| OS.memmove(rectCount, pRectCount, C.PTR_SIZEOF); |
| OS.free(pRectCount); |
| NSRect rect = new NSRect(); |
| gc.handle.saveGraphicsState(); |
| float /*double*/ baseline = layoutManager.typesetter().baselineOffsetInLayoutManager(layoutManager, lineStart); |
| float /*double*/ [] color = null; |
| if (style.underlineColor != null) color = style.underlineColor.handle; |
| if (color == null && style.foreground != null) color = style.foreground.handle; |
| if (color != null) { |
| NSColor.colorWithDeviceRed(color[0], color[1], color[2], color[3]).setStroke(); |
| } |
| for (int k = 0; k < rectCount[0]; k++, pArray += NSRect.sizeof) { |
| OS.memmove(rect, pArray, NSRect.sizeof); |
| fixRect(rect); |
| float /*double*/ underlineX = pt.x + rect.x; |
| float /*double*/ underlineY = pt.y + rect.y + rect.height - baseline + 1; |
| NSBezierPath path = NSBezierPath.bezierPath(); |
| switch (style.underlineStyle) { |
| case SWT.UNDERLINE_ERROR: { |
| path.setLineWidth(2f); |
| path.setLineCapStyle(OS.NSRoundLineCapStyle); |
| path.setLineJoinStyle(OS.NSRoundLineJoinStyle); |
| path.setLineDash(new float /*double*/ []{1, 3f}, 2, 0); |
| point.x = underlineX; |
| point.y = underlineY + 0.5f; |
| path.moveToPoint(point); |
| point.x = underlineX + rect.width; |
| point.y = underlineY + 0.5f; |
| path.lineToPoint(point); |
| break; |
| } |
| case SWT.UNDERLINE_SQUIGGLE: { |
| gc.handle.setShouldAntialias(false); |
| path.setLineWidth(1.0f); |
| path.setLineCapStyle(OS.NSButtLineCapStyle); |
| path.setLineJoinStyle(OS.NSMiterLineJoinStyle); |
| float /*double*/ lineBottom = pt.y + rect.y + rect.height; |
| float squigglyThickness = 1; |
| float squigglyHeight = 2 * squigglyThickness; |
| float /*double*/ squigglyY = Math.min(underlineY - squigglyHeight / 2, lineBottom - squigglyHeight - 1); |
| float[] points = computePolyline((int)underlineX, (int)squigglyY, (int)(underlineX + rect.width), (int)(squigglyY + squigglyHeight)); |
| point.x = points[0] + 0.5f; |
| point.y = points[1] + 0.5f; |
| path.moveToPoint(point); |
| for (int p = 2; p < points.length; p+=2) { |
| point.x = points[p] + 0.5f; |
| point.y = points[p+1] + 0.5f; |
| path.lineToPoint(point); |
| } |
| break; |
| } |
| } |
| path.stroke(); |
| } |
| gc.handle.restoreGraphicsState(); |
| } |
| } |
| } |
| if (drawBorder) { |
| int start = run.start; |
| for (int k = j; k > 0 && style.isAdherentBorder(styles[k - 1].style); k--) { |
| start = styles[k - 1].start; |
| } |
| start = translateOffset(start); |
| if (!(start > lineEnd || end < lineStart)) { |
| range.location = Math.max(lineStart, start); |
| range.length = Math.min(lineEnd, end) + 1 - range.location; |
| if (range.length > 0) { |
| int /*long*/ pRectCount = OS.malloc(C.PTR_SIZEOF); |
| int /*long*/ pArray = layoutManager.rectArrayForCharacterRange(range, range, textContainer, pRectCount); |
| int /*long*/ [] rectCount = new int /*long*/ [1]; |
| OS.memmove(rectCount, pRectCount, C.PTR_SIZEOF); |
| OS.free(pRectCount); |
| NSRect rect = new NSRect(); |
| gc.handle.saveGraphicsState(); |
| float /*double*/ [] color = null; |
| if (style.borderColor != null) color = style.borderColor.handle; |
| if (color == null && style.foreground != null) color = style.foreground.handle; |
| if (color != null) { |
| NSColor.colorWithDeviceRed(color[0], color[1], color[2], color[3]).setStroke(); |
| } |
| int width = 1; |
| float[] dashes = null; |
| switch (style.borderStyle) { |
| case SWT.BORDER_SOLID: break; |
| case SWT.BORDER_DASH: dashes = width != 0 ? GC.LINE_DASH : GC.LINE_DASH_ZERO; break; |
| case SWT.BORDER_DOT: dashes = width != 0 ? GC.LINE_DOT : GC.LINE_DOT_ZERO; break; |
| } |
| float /*double*/ [] lengths = null; |
| if (dashes != null) { |
| lengths = new float /*double*/[dashes.length]; |
| for (int k = 0; k < lengths.length; k++) { |
| lengths[k] = width == 0 ? dashes[k] : dashes[k] * width; |
| } |
| } |
| for (int k = 0; k < rectCount[0]; k++, pArray += NSRect.sizeof) { |
| OS.memmove(rect, pArray, NSRect.sizeof); |
| fixRect(rect); |
| rect.x += pt.x + 0.5f; |
| rect.y += pt.y + 0.5f; |
| rect.width -= 0.5f; |
| rect.height -= 0.5f; |
| NSBezierPath path = NSBezierPath.bezierPath(); |
| path.setLineDash(lengths, lengths != null ? lengths.length : 0, 0); |
| path.appendBezierPathWithRect(rect); |
| path.stroke(); |
| } |
| gc.handle.restoreGraphicsState(); |
| } |
| } |
| } |
| } |
| } |
| } |
| gc.handle.restoreGraphicsState(); |
| } finally { |
| gc.uncheckGC(pool); |
| } |
| } |
| |
| void fixRect(NSRect rect) { |
| for (int j = 0; j < lineBounds.length; j++) { |
| NSRect line = lineBounds[j]; |
| if (line.y <= rect.y && rect.y < line.y + line.height) { |
| if (rect.x + rect.width > line.x + line.width) { |
| rect.width = line.x + line.width - rect.x; |
| } |
| } |
| } |
| } |
| |
| void freeRuns() { |
| if (textStorage == null) return; |
| if (textStorage != null) { |
| textStorage.release(); |
| } |
| if (layoutManager != null) { |
| layoutManager.release(); |
| } |
| if (textContainer != null) { |
| textContainer.release(); |
| } |
| textStorage = null; |
| layoutManager = null; |
| textContainer = null; |
| } |
| |
| /** |
| * Returns the receiver's horizontal text alignment, which will be one |
| * of <code>SWT.LEFT</code>, <code>SWT.CENTER</code> or |
| * <code>SWT.RIGHT</code>. |
| * |
| * @return the alignment used to positioned text horizontally |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public int getAlignment() { |
| checkLayout(); |
| return alignment; |
| } |
| |
| /** |
| * Returns the ascent of the receiver. |
| * |
| * @return the ascent |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * |
| * @see #getDescent() |
| * @see #setDescent(int) |
| * @see #setAscent(int) |
| * @see #getLineMetrics(int) |
| */ |
| public int getAscent () { |
| checkLayout(); |
| return ascent; |
| } |
| |
| /** |
| * Returns the bounds of the receiver. The width returned is either the |
| * width of the longest line or the width set using {@link TextLayout#setWidth(int)}. |
| * To obtain the text bounds of a line use {@link TextLayout#getLineBounds(int)}. |
| * |
| * @return the bounds of the receiver |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * |
| * @see #setWidth(int) |
| * @see #getLineBounds(int) |
| */ |
| public Rectangle getBounds() { |
| checkLayout(); |
| NSAutoreleasePool pool = null; |
| if (!NSThread.isMainThread()) pool = (NSAutoreleasePool) new NSAutoreleasePool().alloc().init(); |
| try { |
| computeRuns(); |
| NSRect rect = layoutManager.usedRectForTextContainer(textContainer); |
| if (wrapWidth != -1) rect.width = wrapWidth; |
| if (text.length() == 0) { |
| Font font = this.font != null ? this.font : device.systemFont; |
| NSFont nsFont = font.handle; |
| rect.height = layoutManager.defaultLineHeightForFont(nsFont); |
| } |
| rect.height = Math.max(rect.height, ascent + descent) + spacing; |
| return new Rectangle(0, 0, (int)Math.ceil(rect.width), (int)Math.ceil(rect.height)); |
| } finally { |
| if (pool != null) pool.release(); |
| } |
| } |
| |
| /** |
| * Returns the bounds for the specified range of characters. The |
| * bounds is the smallest rectangle that encompasses all characters |
| * in the range. The start and end offsets are inclusive and will be |
| * clamped if out of range. |
| * |
| * @param start the start offset |
| * @param end the end offset |
| * @return the bounds of the character range |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public Rectangle getBounds(int start, int end) { |
| checkLayout(); |
| NSAutoreleasePool pool = null; |
| if (!NSThread.isMainThread()) pool = (NSAutoreleasePool) new NSAutoreleasePool().alloc().init(); |
| try { |
| computeRuns(); |
| int length = text.length(); |
| if (length == 0) return new Rectangle(0, 0, 0, 0); |
| if (start > end) return new Rectangle(0, 0, 0, 0); |
| start = Math.min(Math.max(0, start), length - 1); |
| end = Math.min(Math.max(0, end), length - 1); |
| start = translateOffset(start); |
| end = translateOffset(end); |
| NSRange range = new NSRange(); |
| range.location = start; |
| range.length = end - start + 1; |
| int /*long*/ pRectCount = OS.malloc(C.PTR_SIZEOF); |
| int /*long*/ pArray = layoutManager.rectArrayForCharacterRange(range, range, textContainer, pRectCount); |
| int /*long*/ [] rectCount = new int /*long*/ [1]; |
| OS.memmove(rectCount, pRectCount, C.PTR_SIZEOF); |
| OS.free(pRectCount); |
| NSRect rect = new NSRect(); |
| int left = 0x7FFFFFFF, right = 0; |
| int top = 0x7FFFFFFF, bottom = 0; |
| for (int i = 0; i < rectCount[0]; i++, pArray += NSRect.sizeof) { |
| OS.memmove(rect, pArray, NSRect.sizeof); |
| fixRect(rect); |
| left = Math.min(left, (int)rect.x); |
| right = Math.max(right, (int)Math.ceil(rect.x + rect.width)); |
| top = Math.min(top, (int)rect.y); |
| bottom = Math.max(bottom, (int)Math.ceil(rect.y + rect.height)); |
| } |
| return new Rectangle(left, top, right - left, bottom - top); |
| } finally { |
| if (pool != null) pool.release(); |
| } |
| } |
| |
| /** |
| * Returns the descent of the receiver. |
| * |
| * @return the descent |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * |
| * @see #getAscent() |
| * @see #setAscent(int) |
| * @see #setDescent(int) |
| * @see #getLineMetrics(int) |
| */ |
| public int getDescent () { |
| checkLayout(); |
| return descent; |
| } |
| |
| /** |
| * Returns the default font currently being used by the receiver |
| * to draw and measure text. |
| * |
| * @return the receiver's font |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public Font getFont () { |
| checkLayout(); |
| return font; |
| } |
| |
| /** |
| * Returns the receiver's indent. |
| * |
| * @return the receiver's indent |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * |
| * @since 3.2 |
| */ |
| public int getIndent () { |
| checkLayout(); |
| return indent; |
| } |
| |
| /** |
| * Returns the receiver's justification. |
| * |
| * @return the receiver's justification |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * |
| * @since 3.2 |
| */ |
| public boolean getJustify () { |
| checkLayout(); |
| return justify; |
| } |
| |
| /** |
| * Returns the embedding level for the specified character offset. The |
| * embedding level is usually used to determine the directionality of a |
| * character in bidirectional text. |
| * |
| * @param offset the character offset |
| * @return the embedding level |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_INVALID_ARGUMENT - if the character offset is out of range</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| */ |
| public int getLevel(int offset) { |
| checkLayout(); |
| NSAutoreleasePool pool = null; |
| if (!NSThread.isMainThread()) pool = (NSAutoreleasePool) new NSAutoreleasePool().alloc().init(); |
| try { |
| computeRuns(); |
| int length = text.length(); |
| if (!(0 <= offset && offset <= length)) SWT.error(SWT.ERROR_INVALID_RANGE); |
| offset = translateOffset(offset); |
| int /*long*/ glyphOffset = layoutManager.glyphIndexForCharacterAtIndex(offset); |
| NSRange range = new NSRange(); |
| range.location = glyphOffset; |
| range.length = 1; |
| int /*long*/ pBidiLevels = OS.malloc(1); |
| byte[] bidiLevels = new byte[1]; |
| int /*long*/ result = layoutManager.getGlyphsInRange(range, 0, 0, 0, 0, pBidiLevels); |
| if (result > 0) { |
| OS.memmove(bidiLevels, pBidiLevels, 1); |
| } |
| OS.free(pBidiLevels); |
| return bidiLevels[0]; |
| } finally { |
| if (pool != null) pool.release(); |
| } |
| } |
| |
| /** |
| * Returns the line offsets. Each value in the array is the |
| * offset for the first character in a line except for the last |
| * value, which contains the length of the text. |
| * |
| * @return the line offsets |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public int[] getLineOffsets() { |
| checkLayout (); |
| NSAutoreleasePool pool = null; |
| if (!NSThread.isMainThread()) pool = (NSAutoreleasePool) new NSAutoreleasePool().alloc().init(); |
| try { |
| computeRuns(); |
| int[] offsets = new int[lineOffsets.length]; |
| for (int i = 0; i < offsets.length; i++) { |
| offsets[i] = untranslateOffset(lineOffsets[i]); |
| } |
| return offsets; |
| } finally { |
| if (pool != null) pool.release(); |
| } |
| } |
| |
| /** |
| * Returns the index of the line that contains the specified |
| * character offset. |
| * |
| * @param offset the character offset |
| * @return the line index |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_INVALID_ARGUMENT - if the character offset is out of range</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public int getLineIndex(int offset) { |
| checkLayout (); |
| NSAutoreleasePool pool = null; |
| if (!NSThread.isMainThread()) pool = (NSAutoreleasePool) new NSAutoreleasePool().alloc().init(); |
| try { |
| computeRuns(); |
| int length = text.length(); |
| if (!(0 <= offset && offset <= length)) SWT.error(SWT.ERROR_INVALID_RANGE); |
| offset = translateOffset(offset); |
| for (int line=0; line<lineOffsets.length - 1; line++) { |
| if (lineOffsets[line + 1] > offset) { |
| return line; |
| } |
| } |
| return lineBounds.length - 1; |
| } finally { |
| if (pool != null) pool.release(); |
| } |
| } |
| |
| /** |
| * Returns the bounds of the line for the specified line index. |
| * |
| * @param lineIndex the line index |
| * @return the line bounds |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_INVALID_ARGUMENT - if the line index is out of range</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public Rectangle getLineBounds(int lineIndex) { |
| checkLayout(); |
| NSAutoreleasePool pool = null; |
| if (!NSThread.isMainThread()) pool = (NSAutoreleasePool) new NSAutoreleasePool().alloc().init(); |
| try { |
| computeRuns(); |
| if (!(0 <= lineIndex && lineIndex < lineBounds.length)) SWT.error(SWT.ERROR_INVALID_RANGE); |
| NSRect rect = lineBounds[lineIndex]; |
| int height = Math.max((int)Math.ceil(rect.height), ascent + descent); |
| return new Rectangle((int)rect.x, (int)rect.y, (int)Math.ceil(rect.width), height); |
| } finally { |
| if (pool != null) pool.release(); |
| } |
| } |
| |
| /** |
| * Returns the receiver's line count. This includes lines caused |
| * by wrapping. |
| * |
| * @return the line count |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public int getLineCount() { |
| checkLayout (); |
| NSAutoreleasePool pool = null; |
| if (!NSThread.isMainThread()) pool = (NSAutoreleasePool) new NSAutoreleasePool().alloc().init(); |
| try { |
| computeRuns(); |
| return lineOffsets.length - 1; |
| } finally { |
| if (pool != null) pool.release(); |
| } |
| } |
| |
| /** |
| * Returns the font metrics for the specified line index. |
| * |
| * @param lineIndex the line index |
| * @return the font metrics |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_INVALID_ARGUMENT - if the line index is out of range</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public FontMetrics getLineMetrics (int lineIndex) { |
| checkLayout (); |
| NSAutoreleasePool pool = null; |
| if (!NSThread.isMainThread()) pool = (NSAutoreleasePool) new NSAutoreleasePool().alloc().init(); |
| try { |
| computeRuns(); |
| int lineCount = getLineCount(); |
| if (!(0 <= lineIndex && lineIndex < lineCount)) SWT.error(SWT.ERROR_INVALID_RANGE); |
| int length = text.length(); |
| if (length == 0) { |
| Font font = this.font != null ? this.font : device.systemFont; |
| NSFont nsFont = font.handle; |
| int ascent = (int)(0.5f + nsFont.ascender()); |
| int descent = (int)(0.5f + (-nsFont.descender() + nsFont.leading())); |
| ascent = Math.max(ascent, this.ascent); |
| descent = Math.max(descent, this.descent); |
| return FontMetrics.cocoa_new(ascent, descent, 0, 0, ascent + descent); |
| } |
| Rectangle rect = getLineBounds(lineIndex); |
| int baseline = (int)layoutManager.typesetter().baselineOffsetInLayoutManager(layoutManager, getLineOffsets()[lineIndex]); |
| return FontMetrics.cocoa_new(rect.height - baseline, baseline, 0, 0, rect.height); |
| } finally { |
| if (pool != null) pool.release(); |
| } |
| } |
| |
| /** |
| * Returns the location for the specified character offset. The |
| * <code>trailing</code> argument indicates whether the offset |
| * corresponds to the leading or trailing edge of the cluster. |
| * |
| * @param offset the character offset |
| * @param trailing the trailing flag |
| * @return the location of the character offset |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * |
| * @see #getOffset(Point, int[]) |
| * @see #getOffset(int, int, int[]) |
| */ |
| public Point getLocation(int offset, boolean trailing) { |
| checkLayout(); |
| NSAutoreleasePool pool = null; |
| if (!NSThread.isMainThread()) pool = (NSAutoreleasePool) new NSAutoreleasePool().alloc().init(); |
| try { |
| computeRuns(); |
| int length = text.length(); |
| if (!(0 <= offset && offset <= length)) SWT.error(SWT.ERROR_INVALID_RANGE); |
| if (length == 0) return new Point(0, 0); |
| offset = translateOffset(offset); |
| int /*long*/ glyphIndex = layoutManager.glyphIndexForCharacterAtIndex(offset); |
| NSRect rect = layoutManager.lineFragmentUsedRectForGlyphAtIndex(glyphIndex, 0); |
| NSPoint point = layoutManager.locationForGlyphAtIndex(glyphIndex); |
| if (trailing) { |
| NSRange range = new NSRange(); |
| range.location = offset; |
| range.length = 1; |
| int /*long*/ pRectCount = OS.malloc(C.PTR_SIZEOF); |
| int /*long*/ pArray = layoutManager.rectArrayForCharacterRange(range, range, textContainer, pRectCount); |
| int /*long*/ [] rectCount = new int /*long*/ [1]; |
| OS.memmove(rectCount, pRectCount, C.PTR_SIZEOF); |
| OS.free(pRectCount); |
| if (rectCount[0] > 0) { |
| NSRect bounds = new NSRect(); |
| OS.memmove(bounds, pArray, NSRect.sizeof); |
| fixRect(bounds); |
| point.x += bounds.width; |
| } |
| } |
| return new Point((int)point.x, (int)rect.y); |
| } finally { |
| if (pool != null) pool.release(); |
| } |
| } |
| |
| /** |
| * Returns the next offset for the specified offset and movement |
| * type. The movement is one of <code>SWT.MOVEMENT_CHAR</code>, |
| * <code>SWT.MOVEMENT_CLUSTER</code>, <code>SWT.MOVEMENT_WORD</code>, |
| * <code>SWT.MOVEMENT_WORD_END</code> or <code>SWT.MOVEMENT_WORD_START</code>. |
| * |
| * @param offset the start offset |
| * @param movement the movement type |
| * @return the next offset |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_INVALID_ARGUMENT - if the offset is out of range</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * |
| * @see #getPreviousOffset(int, int) |
| */ |
| public int getNextOffset (int offset, int movement) { |
| NSAutoreleasePool pool = null; |
| if (!NSThread.isMainThread()) pool = (NSAutoreleasePool) new NSAutoreleasePool().alloc().init(); |
| try { |
| return _getOffset(offset, movement, true); |
| } finally { |
| if (pool != null) pool.release(); |
| } |
| } |
| |
| int _getOffset (int offset, int movement, boolean forward) { |
| checkLayout(); |
| computeRuns(); |
| int length = text.length(); |
| if (!(0 <= offset && offset <= length)) SWT.error(SWT.ERROR_INVALID_RANGE); |
| if (length == 0) return 0; |
| offset = translateOffset(offset); |
| length = translateOffset(length); |
| switch (movement) { |
| case SWT.MOVEMENT_CLUSTER://TODO cluster |
| case SWT.MOVEMENT_CHAR: { |
| boolean invalid = false; |
| do { |
| int newOffset = offset; |
| if (forward) { |
| if (newOffset < length) newOffset++; |
| } else { |
| if (newOffset > 0) newOffset--; |
| } |
| if (newOffset == offset) break; |
| offset = newOffset; |
| invalid = false; |
| if (invalidOffsets != null) { |
| for (int i = 0; i < invalidOffsets.length; i++) { |
| if (offset == invalidOffsets[i]) { |
| invalid = true; |
| break; |
| } |
| } |
| } |
| } while (invalid); |
| return untranslateOffset(offset); |
| } |
| case SWT.MOVEMENT_WORD: { |
| return untranslateOffset((int)/*64*/textStorage.nextWordFromIndex(offset, forward)); |
| } |
| case SWT.MOVEMENT_WORD_END: { |
| NSRange range = textStorage.doubleClickAtIndex(length == offset ? length - 1 : offset); |
| return untranslateOffset((int)/*64*/(range.location + range.length)); |
| } |
| case SWT.MOVEMENT_WORD_START: { |
| NSRange range = textStorage.doubleClickAtIndex(length == offset ? length - 1 : offset); |
| return untranslateOffset((int)/*64*/range.location); |
| } |
| } |
| return untranslateOffset(offset); |
| } |
| |
| /** |
| * Returns the character offset for the specified point. |
| * For a typical character, the trailing argument will be filled in to |
| * indicate whether the point is closer to the leading edge (0) or |
| * the trailing edge (1). When the point is over a cluster composed |
| * of multiple characters, the trailing argument will be filled with the |
| * position of the character in the cluster that is closest to |
| * the point. |
| * |
| * @param point the point |
| * @param trailing the trailing buffer |
| * @return the character offset |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_INVALID_ARGUMENT - if the trailing length is less than <code>1</code></li> |
| * <li>ERROR_NULL_ARGUMENT - if the point is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * |
| * @see #getLocation(int, boolean) |
| */ |
| public int getOffset(Point point, int[] trailing) { |
| checkLayout(); |
| NSAutoreleasePool pool = null; |
| if (!NSThread.isMainThread()) pool = (NSAutoreleasePool) new NSAutoreleasePool().alloc().init(); |
| try { |
| computeRuns(); |
| if (point == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); |
| return getOffset(point.x, point.y, trailing); |
| } finally { |
| if (pool != null) pool.release(); |
| } |
| } |
| |
| /** |
| * Returns the character offset for the specified point. |
| * For a typical character, the trailing argument will be filled in to |
| * indicate whether the point is closer to the leading edge (0) or |
| * the trailing edge (1). When the point is over a cluster composed |
| * of multiple characters, the trailing argument will be filled with the |
| * position of the character in the cluster that is closest to |
| * the point. |
| * |
| * @param x the x coordinate of the point |
| * @param y the y coordinate of the point |
| * @param trailing the trailing buffer |
| * @return the character offset |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_INVALID_ARGUMENT - if the trailing length is less than <code>1</code></li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * |
| * @see #getLocation(int, boolean) |
| */ |
| public int getOffset(int x, int y, int[] trailing) { |
| checkLayout(); |
| NSAutoreleasePool pool = null; |
| if (!NSThread.isMainThread()) pool = (NSAutoreleasePool) new NSAutoreleasePool().alloc().init(); |
| try { |
| computeRuns(); |
| if (trailing != null && trailing.length < 1) SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| int length = text.length(); |
| if (length == 0) return 0; |
| NSPoint pt = new NSPoint(); |
| pt.x = x; |
| pt.y = y; |
| float /*double*/[] partialFration = new float /*double*/[1]; |
| int /*long*/ glyphIndex = layoutManager.glyphIndexForPoint(pt, textContainer, partialFration); |
| int /*long*/ offset = layoutManager.characterIndexForGlyphAtIndex(glyphIndex); |
| if (trailing != null) trailing[0] = Math.round((float)/*64*/partialFration[0]); |
| return Math.min(untranslateOffset((int)/*64*/offset), length - 1); |
| } finally { |
| if (pool != null) pool.release(); |
| } |
| } |
| |
| /** |
| * Returns the orientation of the receiver. |
| * |
| * @return the orientation style |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public int getOrientation() { |
| checkLayout(); |
| return orientation; |
| } |
| |
| /** |
| * Returns the previous offset for the specified offset and movement |
| * type. The movement is one of <code>SWT.MOVEMENT_CHAR</code>, |
| * <code>SWT.MOVEMENT_CLUSTER</code> or <code>SWT.MOVEMENT_WORD</code>, |
| * <code>SWT.MOVEMENT_WORD_END</code> or <code>SWT.MOVEMENT_WORD_START</code>. |
| * |
| * @param offset the start offset |
| * @param movement the movement type |
| * @return the previous offset |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_INVALID_ARGUMENT - if the offset is out of range</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * |
| * @see #getNextOffset(int, int) |
| */ |
| public int getPreviousOffset (int index, int movement) { |
| NSAutoreleasePool pool = null; |
| if (!NSThread.isMainThread()) pool = (NSAutoreleasePool) new NSAutoreleasePool().alloc().init(); |
| try { |
| return _getOffset(index, movement, false); |
| } finally { |
| if (pool != null) pool.release(); |
| } |
| } |
| |
| /** |
| * Gets the ranges of text that are associated with a <code>TextStyle</code>. |
| * |
| * @return the ranges, an array of offsets representing the start and end of each |
| * text style. |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * |
| * @see #getStyles() |
| * |
| * @since 3.2 |
| */ |
| public int[] getRanges () { |
| checkLayout(); |
| int[] result = new int[stylesCount * 2]; |
| int count = 0; |
| for (int i=0; i<stylesCount - 1; i++) { |
| if (styles[i].style != null) { |
| result[count++] = styles[i].start; |
| result[count++] = styles[i + 1].start - 1; |
| } |
| } |
| if (count != result.length) { |
| int[] newResult = new int[count]; |
| System.arraycopy(result, 0, newResult, 0, count); |
| result = newResult; |
| } |
| return result; |
| } |
| |
| /** |
| * Returns the text segments offsets of the receiver. |
| * |
| * @return the text segments offsets |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public int[] getSegments() { |
| checkLayout(); |
| return segments; |
| } |
| |
| String getSegmentsText() { |
| if (segments == null) return text; |
| int nSegments = segments.length; |
| if (nSegments <= 1) return text; |
| int length = text.length(); |
| if (length == 0) return text; |
| if (nSegments == 2) { |
| if (segments[0] == 0 && segments[1] == length) return text; |
| } |
| invalidOffsets = new int[nSegments]; |
| char[] oldChars = new char[length]; |
| text.getChars(0, length, oldChars, 0); |
| char[] newChars = new char[length + nSegments]; |
| int charCount = 0, segmentCount = 0; |
| char separator = getOrientation() == SWT.RIGHT_TO_LEFT ? RTL_MARK : LTR_MARK; |
| while (charCount < length) { |
| if (segmentCount < nSegments && charCount == segments[segmentCount]) { |
| invalidOffsets[segmentCount] = charCount + segmentCount; |
| newChars[charCount + segmentCount++] = separator; |
| } else { |
| newChars[charCount + segmentCount] = oldChars[charCount++]; |
| } |
| } |
| if (segmentCount < nSegments) { |
| invalidOffsets[segmentCount] = charCount + segmentCount; |
| segments[segmentCount] = charCount; |
| newChars[charCount + segmentCount++] = separator; |
| } |
| if (segmentCount != nSegments) { |
| int[] tmp = new int [segmentCount]; |
| System.arraycopy(invalidOffsets, 0, tmp, 0, segmentCount); |
| invalidOffsets = tmp; |
| } |
| return new String(newChars, 0, Math.min(charCount + segmentCount, newChars.length)); |
| } |
| |
| /** |
| * Returns the line spacing of the receiver. |
| * |
| * @return the line spacing |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public int getSpacing () { |
| checkLayout(); |
| return spacing; |
| } |
| |
| /** |
| * Gets the style of the receiver at the specified character offset. |
| * |
| * @param offset the text offset |
| * @return the style or <code>null</code> if not set |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_INVALID_ARGUMENT - if the character offset is out of range</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public TextStyle getStyle (int offset) { |
| checkLayout(); |
| int length = text.length(); |
| if (!(0 <= offset && offset < length)) SWT.error(SWT.ERROR_INVALID_RANGE); |
| for (int i=1; i<stylesCount; i++) { |
| StyleItem item = styles[i]; |
| if (item.start > offset) { |
| return styles[i - 1].style; |
| } |
| } |
| return null; |
| } |
| |
| /** |
| * Gets all styles of the receiver. |
| * |
| * @return the styles |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * |
| * @see #getRanges() |
| * |
| * @since 3.2 |
| */ |
| public TextStyle[] getStyles () { |
| checkLayout(); |
| TextStyle[] result = new TextStyle[stylesCount]; |
| int count = 0; |
| for (int i=0; i<stylesCount; i++) { |
| if (styles[i].style != null) { |
| result[count++] = styles[i].style; |
| } |
| } |
| if (count != result.length) { |
| TextStyle[] newResult = new TextStyle[count]; |
| System.arraycopy(result, 0, newResult, 0, count); |
| result = newResult; |
| } |
| return result; |
| } |
| |
| /** |
| * Returns the tab list of the receiver. |
| * |
| * @return the tab list |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public int[] getTabs() { |
| checkLayout(); |
| return tabs; |
| } |
| |
| /** |
| * Gets the receiver's text, which will be an empty |
| * string if it has never been set. |
| * |
| * @return the receiver's text |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public String getText () { |
| checkLayout (); |
| return text; |
| } |
| |
| /** |
| * Returns the width of the receiver. |
| * |
| * @return the width |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public int getWidth () { |
| checkLayout(); |
| return wrapWidth; |
| } |
| |
| /** |
| * Returns <code>true</code> if the text layout has been disposed, |
| * and <code>false</code> otherwise. |
| * <p> |
| * This method gets the dispose state for the text layout. |
| * When a text layout has been disposed, it is an error to |
| * invoke any other method using the text layout. |
| * </p> |
| * |
| * @return <code>true</code> when the text layout is disposed and <code>false</code> otherwise |
| */ |
| public boolean isDisposed () { |
| return device == null; |
| } |
| |
| /* |
| * Returns true if the underline style is supported natively |
| */ |
| boolean isUnderlineSupported (TextStyle style) { |
| if (style != null && style.underline) { |
| int uStyle = style.underlineStyle; |
| return uStyle == SWT.UNDERLINE_SINGLE || uStyle == SWT.UNDERLINE_DOUBLE || uStyle == SWT.UNDERLINE_LINK || uStyle == UNDERLINE_THICK; |
| } |
| return false; |
| } |
| |
| /** |
| * Sets the text alignment for the receiver. The alignment controls |
| * how a line of text is positioned horizontally. The argument should |
| * be one of <code>SWT.LEFT</code>, <code>SWT.RIGHT</code> or <code>SWT.CENTER</code>. |
| * <p> |
| * The default alignment is <code>SWT.LEFT</code>. Note that the receiver's |
| * width must be set in order to use <code>SWT.RIGHT</code> or <code>SWT.CENTER</code> |
| * alignment. |
| * </p> |
| * |
| * @param alignment the new alignment |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * |
| * @see #setWidth(int) |
| */ |
| public void setAlignment (int alignment) { |
| checkLayout(); |
| int mask = SWT.LEFT | SWT.CENTER | SWT.RIGHT; |
| alignment &= mask; |
| if (alignment == 0) return; |
| if ((alignment & SWT.LEFT) != 0) alignment = SWT.LEFT; |
| if ((alignment & SWT.RIGHT) != 0) alignment = SWT.RIGHT; |
| if (this.alignment == alignment) return; |
| NSAutoreleasePool pool = null; |
| if (!NSThread.isMainThread()) pool = (NSAutoreleasePool) new NSAutoreleasePool().alloc().init(); |
| try { |
| freeRuns(); |
| this.alignment = alignment; |
| } finally { |
| if (pool != null) pool.release(); |
| } |
| } |
| |
| /** |
| * Sets the ascent of the receiver. The ascent is distance in pixels |
| * from the baseline to the top of the line and it is applied to all |
| * lines. The default value is <code>-1</code> which means that the |
| * ascent is calculated from the line fonts. |
| * |
| * @param ascent the new ascent |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_INVALID_ARGUMENT - if the ascent is less than <code>-1</code></li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * |
| * @see #setDescent(int) |
| * @see #getLineMetrics(int) |
| */ |
| public void setAscent (int ascent) { |
| checkLayout (); |
| if (ascent < -1) SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| if (this.ascent == ascent) return; |
| NSAutoreleasePool pool = null; |
| if (!NSThread.isMainThread()) pool = (NSAutoreleasePool) new NSAutoreleasePool().alloc().init(); |
| try { |
| freeRuns(); |
| this.ascent = ascent; |
| } finally { |
| if (pool != null) pool.release(); |
| } |
| } |
| |
| /** |
| * Sets the descent of the receiver. The descent is distance in pixels |
| * from the baseline to the bottom of the line and it is applied to all |
| * lines. The default value is <code>-1</code> which means that the |
| * descent is calculated from the line fonts. |
| * |
| * @param descent the new descent |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_INVALID_ARGUMENT - if the descent is less than <code>-1</code></li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * |
| * @see #setAscent(int) |
| * @see #getLineMetrics(int) |
| */ |
| public void setDescent (int descent) { |
| checkLayout (); |
| if (descent < -1) SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| if (this.descent == descent) return; |
| NSAutoreleasePool pool = null; |
| if (!NSThread.isMainThread()) pool = (NSAutoreleasePool) new NSAutoreleasePool().alloc().init(); |
| try { |
| freeRuns(); |
| this.descent = descent; |
| } finally { |
| if (pool != null) pool.release(); |
| } |
| } |
| |
| /** |
| * Sets the default font which will be used by the receiver |
| * to draw and measure text. If the |
| * argument is null, then a default font appropriate |
| * for the platform will be used instead. Note that a text |
| * style can override the default font. |
| * |
| * @param font the new font for the receiver, or null to indicate a default font |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_INVALID_ARGUMENT - if the font has been disposed</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public void setFont (Font font) { |
| checkLayout (); |
| if (font != null && font.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| Font oldFont = this.font; |
| if (oldFont == font) return; |
| this.font = font; |
| if (oldFont != null && oldFont.equals(font)) return; |
| NSAutoreleasePool pool = null; |
| if (!NSThread.isMainThread()) pool = (NSAutoreleasePool) new NSAutoreleasePool().alloc().init(); |
| try { |
| freeRuns(); |
| } finally { |
| if (pool != null) pool.release(); |
| } |
| } |
| |
| /** |
| * Sets the indent of the receiver. This indent it applied of the first line of |
| * each paragraph. |
| * |
| * @param indent new indent |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * |
| * @since 3.2 |
| */ |
| public void setIndent (int indent) { |
| checkLayout (); |
| if (indent < 0) return; |
| if (this.indent == indent) return; |
| NSAutoreleasePool pool = null; |
| if (!NSThread.isMainThread()) pool = (NSAutoreleasePool) new NSAutoreleasePool().alloc().init(); |
| try { |
| freeRuns(); |
| this.indent = indent; |
| } finally { |
| if (pool != null) pool.release(); |
| } |
| } |
| |
| /** |
| * Sets the justification of the receiver. Note that the receiver's |
| * width must be set in order to use justification. |
| * |
| * @param justify new justify |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * |
| * @since 3.2 |
| */ |
| public void setJustify (boolean justify) { |
| checkLayout (); |
| if (justify == this.justify) return; |
| NSAutoreleasePool pool = null; |
| if (!NSThread.isMainThread()) pool = (NSAutoreleasePool) new NSAutoreleasePool().alloc().init(); |
| try { |
| freeRuns(); |
| this.justify = justify; |
| } finally { |
| if (pool != null) pool.release(); |
| } |
| } |
| |
| /** |
| * Sets the orientation of the receiver, which must be one |
| * of <code>SWT.LEFT_TO_RIGHT</code> or <code>SWT.RIGHT_TO_LEFT</code>. |
| * |
| * @param orientation new orientation style |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public void setOrientation(int orientation) { |
| checkLayout(); |
| int mask = SWT.LEFT_TO_RIGHT | SWT.RIGHT_TO_LEFT; |
| orientation &= mask; |
| if (orientation == 0) return; |
| if ((orientation & SWT.LEFT_TO_RIGHT) != 0) orientation = SWT.LEFT_TO_RIGHT; |
| if (this.orientation == orientation) return; |
| this.orientation = orientation; |
| NSAutoreleasePool pool = null; |
| if (!NSThread.isMainThread()) pool = (NSAutoreleasePool) new NSAutoreleasePool().alloc().init(); |
| try { |
| freeRuns(); |
| } finally { |
| if (pool != null) pool.release(); |
| } |
| } |
| |
| /** |
| * Sets the offsets of the receiver's text segments. Text segments are used to |
| * override the default behaviour of the bidirectional algorithm. |
| * Bidirectional reordering can happen within a text segment but not |
| * between two adjacent segments. |
| * <p> |
| * Each text segment is determined by two consecutive offsets in the |
| * <code>segments</code> arrays. The first element of the array should |
| * always be zero and the last one should always be equals to length of |
| * the text. |
| * </p> |
| * |
| * @param segments the text segments offset |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public void setSegments(int[] segments) { |
| checkLayout(); |
| if (this.segments == null && segments == null) return; |
| if (this.segments != null && segments !=null) { |
| if (this.segments.length == segments.length) { |
| int i; |
| for (i = 0; i <segments.length; i++) { |
| if (this.segments[i] != segments[i]) break; |
| } |
| if (i == segments.length) return; |
| } |
| } |
| NSAutoreleasePool pool = null; |
| if (!NSThread.isMainThread()) pool = (NSAutoreleasePool) new NSAutoreleasePool().alloc().init(); |
| try { |
| freeRuns(); |
| this.segments = segments; |
| } finally { |
| if (pool != null) pool.release(); |
| } |
| } |
| |
| /** |
| * Sets the line spacing of the receiver. The line spacing |
| * is the space left between lines. |
| * |
| * @param spacing the new line spacing |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_INVALID_ARGUMENT - if the spacing is negative</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public void setSpacing (int spacing) { |
| checkLayout(); |
| if (spacing < 0) SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| if (this.spacing == spacing) return; |
| NSAutoreleasePool pool = null; |
| if (!NSThread.isMainThread()) pool = (NSAutoreleasePool) new NSAutoreleasePool().alloc().init(); |
| try { |
| freeRuns(); |
| this.spacing = spacing; |
| } finally { |
| if (pool != null) pool.release(); |
| } |
| } |
| |
| /** |
| * Sets the style of the receiver for the specified range. Styles previously |
| * set for that range will be overwritten. The start and end offsets are |
| * inclusive and will be clamped if out of range. |
| * |
| * @param style the style |
| * @param start the start offset |
| * @param end the end offset |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public void setStyle (TextStyle style, int start, int end) { |
| checkLayout(); |
| NSAutoreleasePool pool = null; |
| if (!NSThread.isMainThread()) pool = (NSAutoreleasePool) new NSAutoreleasePool().alloc().init(); |
| try { |
| int length = text.length(); |
| if (length == 0) return; |
| if (start > end) return; |
| start = Math.min(Math.max(0, start), length - 1); |
| end = Math.min(Math.max(0, end), length - 1); |
| int low = -1; |
| int high = stylesCount; |
| while (high - low > 1) { |
| int index = (high + low) / 2; |
| if (styles[index + 1].start > start) { |
| high = index; |
| } else { |
| low = index; |
| } |
| } |
| if (0 <= high && high < stylesCount) { |
| StyleItem item = styles[high]; |
| if (item.start == start && styles[high + 1].start - 1 == end) { |
| if (style == null) { |
| if (item.style == null) return; |
| } else { |
| if (style.equals(item.style)) return; |
| } |
| } |
| } |
| freeRuns(); |
| int modifyStart = high; |
| int modifyEnd = modifyStart; |
| while (modifyEnd < stylesCount) { |
| if (styles[modifyEnd + 1].start > end) break; |
| modifyEnd++; |
| } |
| if (modifyStart == modifyEnd) { |
| int styleStart = styles[modifyStart].start; |
| int styleEnd = styles[modifyEnd + 1].start - 1; |
| if (styleStart == start && styleEnd == end) { |
| styles[modifyStart].style = style; |
| return; |
| } |
| if (styleStart != start && styleEnd != end) { |
| int newLength = stylesCount + 2; |
| if (newLength > styles.length) { |
| int newSize = Math.min(newLength + 1024, Math.max(64, newLength * 2)); |
| StyleItem[] newStyles = new StyleItem[newSize]; |
| System.arraycopy(styles, 0, newStyles, 0, stylesCount); |
| styles = newStyles; |
| } |
| System.arraycopy(styles, modifyEnd + 1, styles, modifyEnd + 3, stylesCount - modifyEnd - 1); |
| StyleItem item = new StyleItem(); |
| item.start = start; |
| item.style = style; |
| styles[modifyStart + 1] = item; |
| item = new StyleItem(); |
| item.start = end + 1; |
| item.style = styles[modifyStart].style; |
| styles[modifyStart + 2] = item; |
| stylesCount = newLength; |
| return; |
| } |
| } |
| if (start == styles[modifyStart].start) modifyStart--; |
| if (end == styles[modifyEnd + 1].start - 1) modifyEnd++; |
| int newLength = stylesCount + 1 - (modifyEnd - modifyStart - 1); |
| if (newLength > styles.length) { |
| int newSize = Math.min(newLength + 1024, Math.max(64, newLength * 2)); |
| StyleItem[] newStyles = new StyleItem[newSize]; |
| System.arraycopy(styles, 0, newStyles, 0, stylesCount); |
| styles = newStyles; |
| } |
| System.arraycopy(styles, modifyEnd, styles, modifyStart + 2, stylesCount - modifyEnd); |
| StyleItem item = new StyleItem(); |
| item.start = start; |
| item.style = style; |
| styles[modifyStart + 1] = item; |
| styles[modifyStart + 2].start = end + 1; |
| stylesCount = newLength; |
| } finally { |
| if (pool != null) pool.release(); |
| } |
| } |
| |
| /** |
| * Sets the receiver's tab list. Each value in the tab list specifies |
| * the space in pixels from the origin of the text layout to the respective |
| * tab stop. The last tab stop width is repeated continuously. |
| * |
| * @param tabs the new tab list |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public void setTabs(int[] tabs) { |
| checkLayout(); |
| if (this.tabs == null && tabs == null) return; |
| if (this.tabs != null && tabs !=null) { |
| if (this.tabs.length == tabs.length) { |
| int i; |
| for (i = 0; i < tabs.length; i++) { |
| if (this.tabs[i] != tabs[i]) break; |
| } |
| if (i == tabs.length) return; |
| } |
| } |
| NSAutoreleasePool pool = null; |
| if (!NSThread.isMainThread()) pool = (NSAutoreleasePool) new NSAutoreleasePool().alloc().init(); |
| try { |
| freeRuns(); |
| this.tabs = tabs; |
| } finally { |
| if (pool != null) pool.release(); |
| } |
| } |
| |
| /** |
| * Sets the receiver's text. |
| *<p> |
| * Note: Setting the text also clears all the styles. This method |
| * returns without doing anything if the new text is the same as |
| * the current text. |
| * </p> |
| * |
| * @param text the new text |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the text is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public void setText (String text) { |
| checkLayout (); |
| if (text == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); |
| if (text.equals(this.text)) return; |
| NSAutoreleasePool pool = null; |
| if (!NSThread.isMainThread()) pool = (NSAutoreleasePool) new NSAutoreleasePool().alloc().init(); |
| try { |
| freeRuns(); |
| this.text = text; |
| styles = new StyleItem[2]; |
| styles[0] = new StyleItem(); |
| styles[1] = new StyleItem(); |
| styles[1].start = text.length(); |
| stylesCount = 2; |
| } finally { |
| if (pool != null) pool.release(); |
| } |
| } |
| |
| /** |
| * Sets the line width of the receiver, which determines how |
| * text should be wrapped and aligned. The default value is |
| * <code>-1</code> which means wrapping is disabled. |
| * |
| * @param width the new width |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_INVALID_ARGUMENT - if the width is <code>0</code> or less than <code>-1</code></li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * |
| * @see #setAlignment(int) |
| */ |
| public void setWidth (int width) { |
| checkLayout(); |
| if (width < -1 || width == 0) SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| if (this.wrapWidth == width) return; |
| NSAutoreleasePool pool = null; |
| if (!NSThread.isMainThread()) pool = (NSAutoreleasePool) new NSAutoreleasePool().alloc().init(); |
| try { |
| freeRuns(); |
| this.wrapWidth = width; |
| } finally { |
| if (pool != null) pool.release(); |
| } |
| } |
| |
| /** |
| * Returns a string containing a concise, human-readable |
| * description of the receiver. |
| * |
| * @return a string representation of the receiver |
| */ |
| public String toString () { |
| if (isDisposed()) return "TextLayout {*DISPOSED*}"; |
| return "TextLayout {" + text + "}"; |
| } |
| |
| /* |
| * Translate a client offset to an internal offset |
| */ |
| int translateOffset (int offset) { |
| int length = text.length(); |
| if (length == 0) return offset; |
| if (invalidOffsets == null) return offset; |
| for (int i = 0; i < invalidOffsets.length; i++) { |
| if (offset < invalidOffsets[i]) break; |
| offset++; |
| } |
| return offset; |
| } |
| |
| /* |
| * Translate an internal offset to a client offset |
| */ |
| int untranslateOffset (int offset) { |
| int length = text.length(); |
| if (length == 0) return offset; |
| if (invalidOffsets == null) return offset; |
| for (int i = 0; i < invalidOffsets.length; i++) { |
| if (offset == invalidOffsets[i]) { |
| offset++; |
| continue; |
| } |
| if (offset < invalidOffsets[i]) { |
| return offset - i; |
| } |
| } |
| return offset - invalidOffsets.length; |
| } |
| |
| } |