org.eclipse.swt.custom.StyledTextRenderer Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of org.eclipse.swt.gtk.linux.ppc64le Show documentation
Show all versions of org.eclipse.swt.gtk.linux.ppc64le Show documentation
Standard Widget Toolkit for GTK on ppc64le
The newest version!
/*******************************************************************************
* Copyright (c) 2000, 2018 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
* Anton Leherbauer (Wind River Systems) - Bug 439419
* Angelo Zerr - Customize different line spacing of StyledText - Bug 522020
*******************************************************************************/
package org.eclipse.swt.custom;
import java.util.*;
import java.util.List;
import org.eclipse.swt.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.widgets.*;
/**
* A StyledTextRenderer renders the content of a StyledText widget.
* This class can be used to render to the display or to a printer.
*/
class StyledTextRenderer {
Device device;
StyledText styledText;
StyledTextContent content;
/* Custom line spacing */
StyledTextLineSpacingProvider lineSpacingProvider;
boolean lineSpacingComputing;
/* Custom line metrics */
private FontMetrics fixedLineMetrics;
/* Font info */
Font regularFont, boldFont, italicFont, boldItalicFont;
int tabWidth;
int ascent, descent;
int averageCharWidth;
int tabLength; //tab length in spaces
/* Line data */
int topIndex = -1;
TextLayout[] layouts;
int lineCount;
LineSizeInfo[] lineSizes;
LineInfo[] lines;
int maxWidth;
int maxWidthLineIndex;
float averageLineHeight;
int linesInAverageLineHeight;
boolean idleRunning;
/* Bullet */
Bullet[] bullets;
int[] bulletsIndices;
int[] redrawLines;
/* Style data */
int[] ranges;
int styleCount;
StyleRange[] styles;
StyleRange[] stylesSet;
int stylesSetCount = 0;
boolean hasLinks, fixedPitch;
final static int BULLET_MARGIN = 8;
final static boolean COMPACT_STYLES = true;
final static boolean MERGE_STYLES = true;
final static int GROW = 32;
final static int IDLE_TIME = 50;
final static int CACHE_SIZE = 300;
final static int BACKGROUND = 1 << 0;
final static int ALIGNMENT = 1 << 1;
final static int INDENT = 1 << 2;
final static int JUSTIFY = 1 << 3;
final static int SEGMENTS = 1 << 5;
final static int TABSTOPS = 1 << 6;
final static int WRAP_INDENT = 1 << 7;
final static int SEGMENT_CHARS = 1 << 8;
final static int VERTICAL_INDENT = 1 << 9;
static class LineSizeInfo {
private static final int RESETED_SIZE = -1;
/* Line size */
int height;
int width;
public LineSizeInfo() {
resetSize();
}
/**
* Reset the line size.
*/
void resetSize() {
height = RESETED_SIZE;
width = RESETED_SIZE;
}
/**
* Returns true if the TextLayout get from the layout pool can be directly used
* or must be refreshed with styles.
*
* @return true if the TextLayout get from the layout pool can be directly used
* or must be refreshed with styles.
*/
boolean canLayout() {
return !needsRecalculateWidth();
}
/**
* Returns true if it needs to recalculate the line size and false
* otherwise.
*
* @return true if it needs to recalculate the line size and false
* otherwise.
*/
boolean needsRecalculateSize() {
return needsRecalculateWidth() || needsRecalculateHeight();
}
/**
* Returns true if it needs to recalculate the line width and false
* otherwise.
*
* @return true if it needs to recalculate the line width and false
* otherwise.
*/
boolean needsRecalculateWidth() {
return width == RESETED_SIZE;
}
/**
* Returns true if it needs to recalculate the line height and false
* otherwise.
*
* @return true if it needs to recalculate the line height and false
* otherwise.
*/
boolean needsRecalculateHeight() {
return height == RESETED_SIZE;
}
}
static class LineInfo {
int flags;
Color background;
int alignment;
int indent;
int wrapIndent;
boolean justify;
int[] segments;
char[] segmentsChars;
int[] tabStops;
int verticalIndent;
public LineInfo() {
}
public LineInfo(LineInfo info) {
if (info != null) {
flags = info.flags;
background = info.background;
alignment = info.alignment;
indent = info.indent;
wrapIndent = info.wrapIndent;
justify = info.justify;
segments = info.segments;
segmentsChars = info.segmentsChars;
tabStops = info.tabStops;
verticalIndent = info.verticalIndent;
}
}
}
private record LineDrawInfo(int index, TextLayout layout, String text, int offset, int height) {
}
static int cap (TextLayout layout, int offset) {
if (layout == null) return offset;
return Math.min (layout.getText().length() -1, Math.max (0, offset));
}
StyledTextRenderer(Device device, StyledText styledText) {
this.device = device;
this.styledText = styledText;
}
int addMerge(int[] mergeRanges, StyleRange[] mergeStyles, int mergeCount, int modifyStart, int modifyEnd) {
int rangeCount = styleCount << 1;
StyleRange endStyle = null;
int endStart = 0, endLength = 0;
if (modifyEnd < rangeCount) {
endStyle = styles[modifyEnd >> 1];
endStart = ranges[modifyEnd];
endLength = ranges[modifyEnd + 1];
}
int grow = mergeCount - (modifyEnd - modifyStart);
if (rangeCount + grow >= ranges.length) {
int[] tmpRanges = new int[ranges.length + grow + (GROW << 1)];
System.arraycopy(ranges, 0, tmpRanges, 0, modifyStart);
StyleRange[] tmpStyles = new StyleRange[styles.length + (grow >> 1) + GROW];
System.arraycopy(styles, 0, tmpStyles, 0, modifyStart >> 1);
if (rangeCount > modifyEnd) {
System.arraycopy(ranges, modifyEnd, tmpRanges, modifyStart + mergeCount, rangeCount - modifyEnd);
System.arraycopy(styles, modifyEnd >> 1, tmpStyles, (modifyStart + mergeCount) >> 1, styleCount - (modifyEnd >> 1));
}
ranges = tmpRanges;
styles = tmpStyles;
} else {
if (rangeCount > modifyEnd) {
System.arraycopy(ranges, modifyEnd, ranges, modifyStart + mergeCount, rangeCount - modifyEnd);
System.arraycopy(styles, modifyEnd >> 1, styles, (modifyStart + mergeCount) >> 1, styleCount - (modifyEnd >> 1));
}
}
if (MERGE_STYLES) {
int j = modifyStart;
for (int i = 0; i < mergeCount; i += 2) {
if (j > 0 && ranges[j - 2] + ranges[j - 1] == mergeRanges[i] && mergeStyles[i >> 1].similarTo(styles[(j - 2) >> 1])) {
ranges[j - 1] += mergeRanges[i + 1];
} else {
styles[j >> 1] = mergeStyles[i >> 1];
ranges[j++] = mergeRanges[i];
ranges[j++] = mergeRanges[i + 1];
}
}
if (endStyle != null && ranges[j - 2] + ranges[j - 1] == endStart && endStyle.similarTo(styles[(j - 2) >> 1])) {
ranges[j - 1] += endLength;
modifyEnd += 2;
mergeCount += 2;
}
if (rangeCount > modifyEnd) {
System.arraycopy(ranges, modifyStart + mergeCount, ranges, j, rangeCount - modifyEnd);
System.arraycopy(styles, (modifyStart + mergeCount) >> 1, styles, j >> 1, styleCount - (modifyEnd >> 1));
}
grow = (j - modifyStart) - (modifyEnd - modifyStart);
} else {
System.arraycopy(mergeRanges, 0, ranges, modifyStart, mergeCount);
System.arraycopy(mergeStyles, 0, styles, modifyStart >> 1, mergeCount >> 1);
}
styleCount += grow >> 1;
return grow;
}
int addMerge(StyleRange[] mergeStyles, int mergeCount, int modifyStart, int modifyEnd) {
int grow = mergeCount - (modifyEnd - modifyStart);
StyleRange endStyle = null;
if (modifyEnd < styleCount) endStyle = styles[modifyEnd];
if (styleCount + grow >= styles.length) {
StyleRange[] tmpStyles = new StyleRange[styles.length + grow + GROW];
System.arraycopy(styles, 0, tmpStyles, 0, modifyStart);
if (styleCount > modifyEnd) {
System.arraycopy(styles, modifyEnd, tmpStyles, modifyStart + mergeCount, styleCount - modifyEnd);
}
styles = tmpStyles;
} else {
if (styleCount > modifyEnd) {
System.arraycopy(styles, modifyEnd, styles, modifyStart + mergeCount, styleCount - modifyEnd);
}
}
if (MERGE_STYLES) {
int j = modifyStart;
for (int i = 0; i < mergeCount; i++) {
StyleRange newStyle = mergeStyles[i], style;
if (j > 0 && (style = styles[j - 1]).start + style.length == newStyle.start && newStyle.similarTo(style)) {
style.length += newStyle.length;
} else {
styles[j++] = newStyle;
}
}
StyleRange style = styles[j - 1];
if (endStyle != null && style.start + style.length == endStyle.start && endStyle.similarTo(style)) {
style.length += endStyle.length;
modifyEnd++;
mergeCount++;
}
if (styleCount > modifyEnd) {
System.arraycopy(styles, modifyStart + mergeCount, styles, j, styleCount - modifyEnd);
}
grow = (j - modifyStart) - (modifyEnd - modifyStart);
} else {
System.arraycopy(mergeStyles, 0, styles, modifyStart, mergeCount);
}
styleCount += grow;
return grow;
}
void calculate(int startLine, int lineCount) {
int endLine = startLine + lineCount;
if (startLine < 0 || endLine > lineSizes.length) {
return;
}
int hTrim = styledText.leftMargin + styledText.rightMargin + styledText.getCaretWidth();
for (int i = startLine; i < endLine; i++) {
LineSizeInfo line = getLineSize(i);
if (line.needsRecalculateSize()) {
TextLayout layout = getTextLayout(i);
Rectangle rect = layout.getBounds();
line.width = rect.width + hTrim;
line.height = rect.height;
averageLineHeight += (line.height - Math.round(averageLineHeight)) / ++linesInAverageLineHeight;
disposeTextLayout(layout);
}
if (line.width > maxWidth) {
maxWidth = line.width;
maxWidthLineIndex = i;
}
}
}
LineSizeInfo getLineSize(int i) {
if (lineSizes[i] == null) {
lineSizes[i] = new LineSizeInfo();
}
return lineSizes[i];
}
void calculateClientArea () {
int index = Math.max (0, styledText.getTopIndex());
int lineCount = content.getLineCount();
int height = styledText.getClientArea().height;
int y = 0;
/*
* There exists a possibility of ArrayIndexOutOfBounds Exception in
* below code, exact scenario not known. To avoid this exception added
* check for 'index' value, refer Bug 471192.
*/
while (height > y && lineCount > index && lineSizes.length > index) {
calculate(index, 1);
y += lineSizes[index++].height;
}
}
void calculateIdle () {
if (idleRunning) return;
Runnable runnable = new Runnable() {
@Override
public void run() {
if (styledText == null) return;
int i;
long start = System.currentTimeMillis();
for (i = 0; i < lineCount; i++) {
LineSizeInfo line = getLineSize(i);
if (line.needsRecalculateSize()) {
calculate(i, 1);
if (System.currentTimeMillis() - start > IDLE_TIME) break;
}
}
if (i < lineCount) {
Display display = styledText.getDisplay();
display.asyncExec(this);
} else {
idleRunning = false;
styledText.setScrollBars(true);
ScrollBar bar = styledText.getVerticalBar();
if (bar != null) {
bar.setSelection(styledText.getVerticalScrollOffset());
}
}
}
};
Display display = styledText.getDisplay();
display.asyncExec(runnable);
idleRunning = true;
}
void clearLineBackground(int startLine, int count) {
if (lines == null) return;
for (int i = startLine; i < startLine + count; i++) {
LineInfo info = lines[i];
if (info != null) {
info.flags &= ~BACKGROUND;
info.background = null;
if (info.flags == 0) lines[i] = null;
}
}
}
void clearLineStyle(int startLine, int count) {
if (lines == null) return;
for (int i = startLine; i < startLine + count; i++) {
LineInfo info = lines[i];
if (info != null) {
info.flags &= ~(ALIGNMENT | INDENT | VERTICAL_INDENT | WRAP_INDENT | JUSTIFY | TABSTOPS);
if (info.flags == 0) lines[i] = null;
}
}
}
void copyInto(StyledTextRenderer renderer) {
if (ranges != null) {
int[] newRanges = renderer.ranges = new int[styleCount << 1];
System.arraycopy(ranges, 0, newRanges, 0, newRanges.length);
}
if (styles != null) {
StyleRange[] newStyles = renderer.styles = new StyleRange[styleCount];
for (int i = 0; i < newStyles.length; i++) {
newStyles[i] = (StyleRange)styles[i].clone();
}
renderer.styleCount = styleCount;
}
if (lines != null) {
LineInfo[] newLines = renderer.lines = new LineInfo[lineCount];
for (int i = 0; i < newLines.length; i++) {
newLines[i] = new LineInfo(lines[i]);
}
renderer.lineCount = lineCount;
}
}
void dispose() {
if (boldFont != null) boldFont.dispose();
if (italicFont != null) italicFont.dispose();
if (boldItalicFont != null) boldItalicFont.dispose();
boldFont = italicFont = boldItalicFont = null;
reset();
content = null;
device = null;
styledText = null;
}
void disposeTextLayout (TextLayout layout) {
if (layouts != null) {
for (TextLayout l : layouts) {
if (l == layout) return;
}
}
layout.dispose();
}
void drawBullet(Bullet bullet, GC gc, int paintX, int paintY, int index, int lineAscent, int lineDescent) {
StyleRange style = bullet.style;
GlyphMetrics metrics = style.metrics;
Color color = style.foreground;
if (color != null) gc.setForeground(color);
Font font = style.font;
if (font != null) gc.setFont(font);
String string = "";
int type = bullet.type & (ST.BULLET_DOT|ST.BULLET_NUMBER|ST.BULLET_LETTER_LOWER|ST.BULLET_LETTER_UPPER);
switch (type) {
case ST.BULLET_DOT: string = "\u2022"; break;
case ST.BULLET_NUMBER: string = String.valueOf(index + 1); break;
case ST.BULLET_LETTER_LOWER: string = String.valueOf((char) (index % 26 + 97)); break;
case ST.BULLET_LETTER_UPPER: string = String.valueOf((char) (index % 26 + 65)); break;
}
if ((bullet.type & ST.BULLET_TEXT) != 0) string += bullet.text;
Display display = styledText.getDisplay();
TextLayout layout = new TextLayout(display);
layout.setText(string);
layout.setAscent(lineAscent);
layout.setDescent(lineDescent);
style = (StyleRange)style.clone();
style.metrics = null;
if (style.font == null) style.font = getFont(style.fontStyle);
layout.setStyle(style, 0, string.length());
int x = paintX + Math.max(0, metrics.width - layout.getBounds().width - BULLET_MARGIN);
layout.draw(gc, x, paintY);
layout.dispose();
}
/**
* Caches draw-related info that may be expensive to calculate twice when
* drawing first background and then foreground.
*/
private LineDrawInfo makeLineDrawInfo(int lineIndex) {
TextLayout layout = getTextLayout(lineIndex);
String text = content.getLine(lineIndex);
int offset = content.getOffsetAtLine(lineIndex);
int height = layout.getBounds().height;
return new LineDrawInfo(lineIndex, layout, text, offset, height);
}
int drawLines(int startLine, int endLine, int begX, int begY, int endY, GC gc, Color widgetBackground, Color widgetForeground) {
// When fixed line metrics is in effect, tall unicode characters
// will not always fit line's height. In this case, they will
// draw out of line's bounds. To prevent them from being clipped
// by next line's background, paint entire background before any
// foreground.
// I considered to make this mode default, but was worried about
// potential regressions in various legacy code. For example, it
// could change something about line heights/colors during
// painting. While this doesn't sound like a good thing to do, yet
// still, I'd rather stay safe.
final boolean drawBackBeforeFore = (fixedLineMetrics != null);
if (drawBackBeforeFore) {
// Cache drawing information
final List drawInfos = new ArrayList<>();
int y = begY;
for (int iLine = startLine; y < endY && iLine < endLine; iLine++) {
LineDrawInfo lineInfo = makeLineDrawInfo(iLine);
drawInfos.add(lineInfo);
y += lineInfo.height;
}
// Draw background
y = begY;
for (LineDrawInfo lineInfo : drawInfos) {
drawLineBackground(lineInfo, y, gc, widgetBackground);
y += lineInfo.height;
}
// Draw foreground
y = begY;
for (LineDrawInfo lineInfo : drawInfos) {
drawLineForeground(lineInfo, begX, y, gc, widgetForeground);
y += lineInfo.height;
}
// cleanup
for (LineDrawInfo lineInfo : drawInfos) {
disposeTextLayout(lineInfo.layout);
}
return y - begY;
}
int y = begY;
for (int iLine = startLine; y < endY && iLine < endLine; iLine++) {
LineDrawInfo lineInfo = makeLineDrawInfo(iLine);
drawLineBackground(lineInfo, y, gc, widgetBackground);
drawLineForeground(lineInfo, begX, y, gc, widgetForeground);
disposeTextLayout(lineInfo.layout);
y += lineInfo.height;
}
return y - begY;
}
private void drawLineBackground(LineDrawInfo lineInfo, int paintY, GC gc, Color widgetBackground) {
Rectangle client = styledText.getClientArea();
Color lineBackground = getLineBackground(lineInfo.index, null);
StyledTextEvent event = styledText.getLineBackgroundData(lineInfo.offset, lineInfo.text);
if (event != null && event.lineBackground != null) lineBackground = event.lineBackground;
int verticalIndent = lineInfo.layout.getVerticalIndent();
if (lineBackground != null) {
if (verticalIndent > 0) {
gc.setBackground(widgetBackground);
gc.fillRectangle(client.x, paintY, client.width, verticalIndent);
}
gc.setBackground(lineBackground);
gc.fillRectangle(client.x, paintY + verticalIndent, client.width, lineInfo.height - verticalIndent);
} else {
gc.setBackground(widgetBackground);
styledText.drawBackground(gc, client.x, paintY, client.width, lineInfo.height);
}
}
private void drawLineForeground(LineDrawInfo lineInfo, int paintX, int paintY, GC gc, Color widgetForeground) {
int lineLength = lineInfo.text.length();
gc.setForeground(widgetForeground);
Point[] selection = intersectingRelativeNonEmptySelections(lineInfo.offset, lineInfo.offset + lineLength);
if (styledText.getBlockSelection() || selection.length == 0) {
lineInfo.layout.draw(gc, paintX, paintY);
} else {
Color selectionFg = styledText.getSelectionForeground();
Color selectionBg = styledText.getSelectionBackground();
final int baseFlags = (styledText.getStyle() & SWT.FULL_SELECTION) != 0 ? SWT.FULL_SELECTION : SWT.DELIMITER_SELECTION;
for (Point relativeSelection : selection) {
int start = Math.max(0, relativeSelection.x);
int end = Math.min(lineLength, relativeSelection.y);
int flags = baseFlags;
if (relativeSelection.x <= lineLength && lineLength < relativeSelection.y ) {
flags |= SWT.LAST_LINE_SELECTION;
}
// TODO calling draw multiple times here prints line multiple times, overriding some colors
lineInfo.layout.draw(gc, paintX, paintY, start, end - 1, selectionFg, selectionBg, flags);
}
}
// draw objects
Bullet bullet = null;
int bulletIndex = -1;
if (bullets != null) {
if (bulletsIndices != null) {
int index = lineInfo.index - topIndex;
if (0 <= index && index < CACHE_SIZE) {
bullet = bullets[index];
bulletIndex = bulletsIndices[index];
}
} else {
for (Bullet b : bullets) {
bullet = b;
bulletIndex = bullet.indexOf(lineInfo.index);
if (bulletIndex != -1) break;
}
}
}
if (bulletIndex != -1 && bullet != null) {
FontMetrics metrics = lineInfo.layout.getLineMetrics(0);
int lineAscent = metrics.getAscent() + metrics.getLeading();
if (bullet.type == ST.BULLET_CUSTOM) {
bullet.style.start = lineInfo.offset;
styledText.paintObject(gc, paintX, paintY, lineAscent, metrics.getDescent(), bullet.style, bullet, bulletIndex);
} else {
drawBullet(bullet, gc, paintX, paintY, bulletIndex, lineAscent, metrics.getDescent());
}
}
TextStyle[] styles = lineInfo.layout.getStyles();
int[] ranges = null;
for (int i = 0; i < styles.length; i++) {
if (styles[i].metrics != null) {
if (ranges == null) ranges = lineInfo.layout.getRanges();
int start = ranges[i << 1];
int length = ranges[(i << 1) + 1] - start + 1;
Point point = lineInfo.layout.getLocation(start, false);
FontMetrics metrics = lineInfo.layout.getLineMetrics(lineInfo.layout.getLineIndex(start));
StyleRange style = (StyleRange)((StyleRange)styles[i]).clone();
style.start = start + lineInfo.offset;
style.length = length;
int lineAscent = metrics.getAscent() + metrics.getLeading();
styledText.paintObject(gc, point.x + paintX, point.y + paintY, lineAscent, metrics.getDescent(), style, null, 0);
}
}
}
private Point[] intersectingRelativeNonEmptySelections(int fromOffset, int toOffset) {
int[] selectionRanges = styledText.getSelectionRanges();
int lineLength = toOffset - fromOffset;
List res = new ArrayList<>();
for (int i = 0; i < selectionRanges.length; i += 2) {
// ranges are assumed to be sorted by start offset, then (positive)length or higher end offset
Point relativeSelection = new Point(selectionRanges[i] - fromOffset, selectionRanges[i] + selectionRanges[i + 1] - fromOffset);
if (relativeSelection.x != relativeSelection.y &&
relativeSelection.x <= lineLength && relativeSelection.y >= 0) {
res.add(relativeSelection);
}
}
return res.toArray(new Point[res.size()]);
}
int getBaseline() {
return ascent;
}
int getCachedLineHeight(int lineIndex) {
return getLineHeight(lineIndex, false);
}
Font getFont(int style) {
switch (style) {
case SWT.BOLD:
if (boldFont != null) return boldFont;
return boldFont = new Font(device, getFontData(style));
case SWT.ITALIC:
if (italicFont != null) return italicFont;
return italicFont = new Font(device, getFontData(style));
case SWT.BOLD | SWT.ITALIC:
if (boldItalicFont != null) return boldItalicFont;
return boldItalicFont = new Font(device, getFontData(style));
default:
return regularFont;
}
}
FontData[] getFontData(int style) {
FontData[] fontDatas = regularFont.getFontData();
for (FontData fontData : fontDatas) {
fontData.setStyle(style);
}
return fontDatas;
}
int getHeight () {
int defaultLineHeight = getLineHeight();
if (styledText.isFixedLineHeight()) {
return lineCount * defaultLineHeight + styledText.topMargin + styledText.bottomMargin;
}
int totalHeight = 0;
int width = styledText.getWrapWidth();
for (int i = 0; i < lineCount; i++) {
LineSizeInfo line = getLineSize(i);
int height = line.height;
if (line.needsRecalculateHeight()) {
if (width > 0) {
int length = content.getLine(i).length();
height = ((length * averageCharWidth / width) + 1) * defaultLineHeight;
} else {
height = defaultLineHeight;
}
}
totalHeight += height;
}
return totalHeight + styledText.topMargin + styledText.bottomMargin;
}
boolean hasLink(int offset) {
if (offset == -1) return false;
int lineIndex = content.getLineAtOffset(offset);
int lineOffset = content.getOffsetAtLine(lineIndex);
String line = content.getLine(lineIndex);
StyledTextEvent event = styledText.getLineStyleData(lineOffset, line);
if (event != null) {
StyleRange[] styles = event.styles;
if (styles != null) {
int[] ranges = event.ranges;
if (ranges != null) {
for (int i = 0; i < ranges.length; i+=2) {
if (ranges[i] <= offset && offset < ranges[i] + ranges[i+1] && styles[i >> 1].underline && styles[i >> 1].underlineStyle == SWT.UNDERLINE_LINK) {
return true;
}
}
} else {
for (StyleRange style : styles) {
if (style.start <= offset && offset < style.start + style.length && style.underline && style.underlineStyle == SWT.UNDERLINE_LINK) {
return true;
}
}
}
}
} else {
if (ranges != null) {
int rangeCount = styleCount << 1;
int index = getRangeIndex(offset, -1, rangeCount);
if (index >= rangeCount) return false;
int rangeStart = ranges[index];
int rangeLength = ranges[index + 1];
StyleRange rangeStyle = styles[index >> 1];
if (rangeStart <= offset && offset < rangeStart + rangeLength && rangeStyle.underline && rangeStyle.underlineStyle == SWT.UNDERLINE_LINK) {
return true;
}
}
}
return false;
}
int getLineAlignment(int index, int defaultAlignment) {
if (lines == null) return defaultAlignment;
LineInfo info = lines[index];
if (info != null && (info.flags & ALIGNMENT) != 0) {
return info.alignment;
}
return defaultAlignment;
}
Color getLineBackground(int index, Color defaultBackground) {
if (lines == null) return defaultBackground;
LineInfo info = lines[index];
if (info != null && (info.flags & BACKGROUND) != 0) {
return info.background;
}
return defaultBackground;
}
Bullet getLineBullet (int index, Bullet defaultBullet) {
if (bullets == null) return defaultBullet;
if (bulletsIndices != null) return defaultBullet;
for (Bullet bullet : bullets) {
if (bullet.indexOf(index) != -1) return bullet;
}
return defaultBullet;
}
int getLineHeight() {
return ascent + descent;
}
int getLineHeight(int lineIndex) {
return getLineHeight(lineIndex, true);
}
int getLineHeight(int lineIndex, boolean exact) {
LineSizeInfo line = getLineSize(lineIndex);
if (line.needsRecalculateHeight()) {
// here we are in "variable line height", the call of calculate which uses TextLayout is very slow
// so use the average line height of all calculated lines when many heights are needed e.g. for scrolling.
if (isVariableHeight(lineIndex)) {
if (exact) {
calculate(lineIndex, 1);
} else {
return Math.round(averageLineHeight);
}
} else {
line.height = getLineHeight() + getLineSpacing(lineIndex) + getLineVerticalIndent(lineIndex);
}
}
return line.height;
}
/**
* Returns true if the given line can use the default line height and false
* otherwise.
*
* @param lineIndex
* line index
* @return true if the given line can use the default line height and false
* otherwise.
*/
private boolean isVariableHeight(int lineIndex) {
if (styledText.isWordWrap()) {
// In word wrap mode, the line height must be recomputed with TextLayout
return true;
}
StyleRange[] styles = getStylesForLine(lineIndex);
if (styles != null) {
for (StyleRange style : styles) {
if (style.isVariableHeight()) {
// style is variable height
return true;
}
}
}
return false;
}
/**
* returns true if the given line index defines custom line spacing and false
* otherwise.
*
* @param lineIndex
* the line index.
* @return true if the given line index defines custom line spacing and false
* otherwise.
*/
private int getLineSpacing(int lineIndex) {
if (styledText.lineSpacing > 0) {
return styledText.lineSpacing;
} else if (lineSpacingProvider != null) {
Integer lineSpacing = lineSpacingProvider.getLineSpacing(lineIndex);
if (lineSpacing != null) {
return lineSpacing;
}
}
return 0;
}
/**
* Returns styles range for the given line index and null otherwise.
*
* @param lineIndex
* the line index.
* @return styles range for the given line index and null otherwise.
*/
private StyleRange[] getStylesForLine(int lineIndex) {
int start = styledText.getOffsetAtLine(lineIndex);
int length = styledText.getLine(lineIndex).length();
return getStyleRanges(start, length, false);
}
int getLineIndent(int index, int defaultIndent) {
if (lines == null) return defaultIndent;
LineInfo info = lines[index];
if (info != null && (info.flags & INDENT) != 0) {
return info.indent;
}
return defaultIndent;
}
int getLineVerticalIndent(int index) {
if (lines == null) return 0;
LineInfo info = lines[index];
if (info != null && (info.flags & VERTICAL_INDENT) != 0) {
return info.verticalIndent;
}
return 0;
}
int getLineWrapIndent(int index, int defaultWrapIndent) {
if (lines == null) return defaultWrapIndent;
LineInfo info = lines[index];
if (info != null && (info.flags & WRAP_INDENT) != 0) {
return info.wrapIndent;
}
return defaultWrapIndent;
}
boolean getLineJustify(int index, boolean defaultJustify) {
if (lines == null) return defaultJustify;
LineInfo info = lines[index];
if (info != null && (info.flags & JUSTIFY) != 0) {
return info.justify;
}
return defaultJustify;
}
int[] getLineTabStops(int index, int[] defaultTabStops) {
if (lines == null) return defaultTabStops;
LineInfo info = lines[index];
if (info != null && (info.flags & TABSTOPS) != 0) {
return info.tabStops;
}
return defaultTabStops;
}
StyledTextLineSpacingProvider getLineSpacingProvider() {
return lineSpacingProvider;
}
int getRangeIndex(int offset, int low, int high) {
if (styleCount == 0) return 0;
if (ranges != null) {
while (high - low > 2) {
int index = ((high + low) / 2) / 2 * 2;
int end = ranges[index] + ranges[index + 1];
if (end > offset) {
high = index;
} else {
low = index;
}
}
} else {
while (high - low > 1) {
int index = ((high + low) / 2);
int end = styles[index].start + styles[index].length;
if (end > offset) {
high = index;
} else {
low = index;
}
}
}
return high;
}
int[] getRanges(int start, int length) {
if (length == 0) return null;
int[] newRanges;
int end = start + length - 1;
if (ranges != null) {
int rangeCount = styleCount << 1;
int rangeStart = getRangeIndex(start, -1, rangeCount);
if (rangeStart >= rangeCount) return null;
if (ranges[rangeStart] > end) return null;
int rangeEnd = Math.min(rangeCount - 2, getRangeIndex(end, rangeStart - 1, rangeCount));
if (ranges[rangeEnd] > end) rangeEnd = Math.max(rangeStart, rangeEnd - 2);
newRanges = new int[rangeEnd - rangeStart + 2];
System.arraycopy(ranges, rangeStart, newRanges, 0, newRanges.length);
} else {
int rangeStart = getRangeIndex(start, -1, styleCount);
if (rangeStart >= styleCount) return null;
if (styles[rangeStart].start > end) return null;
int rangeEnd = Math.min(styleCount - 1, getRangeIndex(end, rangeStart - 1, styleCount));
if (styles[rangeEnd].start > end) rangeEnd = Math.max(rangeStart, rangeEnd - 1);
newRanges = new int[(rangeEnd - rangeStart + 1) << 1];
for (int i = rangeStart, j = 0; i <= rangeEnd; i++, j += 2) {
StyleRange style = styles[i];
newRanges[j] = style.start;
newRanges[j + 1] = style.length;
}
}
if (start > newRanges[0]) {
newRanges[1] = newRanges[0] + newRanges[1] - start;
newRanges[0] = start;
}
if (end < newRanges[newRanges.length - 2] + newRanges[newRanges.length - 1] - 1) {
newRanges[newRanges.length - 1] = end - newRanges[newRanges.length - 2] + 1;
}
return newRanges;
}
StyleRange[] getStyleRanges(int start, int length, boolean includeRanges) {
if (length == 0) return null;
StyleRange[] newStyles;
int end = start + length - 1;
if (ranges != null) {
int rangeCount = styleCount << 1;
int rangeStart = getRangeIndex(start, -1, rangeCount);
if (rangeStart >= rangeCount) return null;
if (ranges[rangeStart] > end) return null;
int rangeEnd = Math.min(rangeCount - 2, getRangeIndex(end, rangeStart - 1, rangeCount));
if (ranges[rangeEnd] > end) rangeEnd = Math.max(rangeStart, rangeEnd - 2);
newStyles = new StyleRange[((rangeEnd - rangeStart) >> 1) + 1];
if (includeRanges) {
for (int i = rangeStart, j = 0; i <= rangeEnd; i += 2, j++) {
newStyles[j] = (StyleRange)styles[i >> 1].clone();
newStyles[j].start = ranges[i];
newStyles[j].length = ranges[i + 1];
}
} else {
System.arraycopy(styles, rangeStart >> 1, newStyles, 0, newStyles.length);
}
} else {
int rangeStart = getRangeIndex(start, -1, styleCount);
if (rangeStart >= styleCount) return null;
if (styles[rangeStart].start > end) return null;
int rangeEnd = Math.min(styleCount - 1, getRangeIndex(end, rangeStart - 1, styleCount));
if (styles[rangeEnd].start > end) rangeEnd = Math.max(rangeStart, rangeEnd - 1);
newStyles = new StyleRange[rangeEnd - rangeStart + 1];
System.arraycopy(styles, rangeStart, newStyles, 0, newStyles.length);
}
if (includeRanges || ranges == null) {
StyleRange style = newStyles[0];
if (start > style.start) {
newStyles[0] = style = (StyleRange)style.clone();
style.length = style.start + style.length - start;
style.start = start;
}
style = newStyles[newStyles.length - 1];
if (end < style.start + style.length - 1) {
newStyles[newStyles.length - 1] = style = (StyleRange)style.clone();
style.length = end - style.start + 1;
}
}
return newStyles;
}
StyleRange getStyleRange(StyleRange style) {
if (style.underline && style.underlineStyle == SWT.UNDERLINE_LINK) hasLinks = true;
if (style.start == 0 && style.length == 0 && style.fontStyle == SWT.NORMAL) return style;
StyleRange clone = (StyleRange)style.clone();
clone.start = clone.length = 0;
clone.fontStyle = SWT.NORMAL;
if (clone.font == null) clone.font = getFont(style.fontStyle);
return clone;
}
TextLayout getTextLayout(int lineIndex) {
if (lineSpacingProvider == null) {
return getTextLayout(lineIndex, styledText.getOrientation(), styledText.getWrapWidth(), styledText.lineSpacing);
}
// Compute line spacing for the given line index.
int newLineSpacing = styledText.lineSpacing;
Integer spacing = lineSpacingProvider.getLineSpacing(lineIndex);
if (spacing != null && spacing.intValue() >= 0) {
newLineSpacing = spacing;
}
// Check if line spacing has not changed
if (isSameLineSpacing(lineIndex, newLineSpacing)) {
return getTextLayout(lineIndex, styledText.getOrientation(), styledText.getWrapWidth(), newLineSpacing);
}
// Get text layout with original StyledText line spacing.
TextLayout layout = getTextLayout(lineIndex, styledText.getOrientation(), styledText.getWrapWidth(),
styledText.lineSpacing);
if (layout.getSpacing() != newLineSpacing) {
layout.setSpacing(newLineSpacing);
if (lineSpacingComputing) {
return layout;
}
try {
/* Call of resetCache, setCaretLocation, redraw call getTextLayout method
* To avoid having stack overflow, lineSpacingComputing flag is used to call
* resetCache, setCaretLocation, redraw methods only at the end of the compute of all lines spacing.
*/
lineSpacingComputing = true;
styledText.resetCache(lineIndex, 1);
styledText.setCaretLocations();
styledText.redraw();
} finally {
lineSpacingComputing = false;
}
}
return layout;
}
boolean isSameLineSpacing(int lineIndex, int newLineSpacing) {
if (layouts == null) {
return false;
}
int layoutIndex = lineIndex - topIndex;
if (0 <= layoutIndex && layoutIndex < layouts.length) {
TextLayout layout = layouts[layoutIndex];
return layout != null && !layout.isDisposed() && layout.getSpacing() == newLineSpacing;
}
return false;
}
private static final class StyleEntry {
public final int start;
public final int end;
public final TextStyle style;
public StyleEntry(TextStyle style, int start, int end) {
this.style = style;
this.start = start;
this.end = end;
}
}
TextLayout getTextLayout(int lineIndex, int orientation, int width, int lineSpacing) {
TextLayout layout = null;
if (styledText != null) {
int topIndex = styledText.topIndex > 0 ? styledText.topIndex - 1 : 0;
if (layouts == null || topIndex != this.topIndex) {
TextLayout[] newLayouts = new TextLayout[CACHE_SIZE];
if (layouts != null) {
for (int i = 0; i < layouts.length; i++) {
if (layouts[i] != null) {
int layoutIndex = (i + this.topIndex) - topIndex;
if (0 <= layoutIndex && layoutIndex < newLayouts.length) {
newLayouts[layoutIndex] = layouts[i];
} else {
layouts[i].dispose();
}
}
}
}
if (bullets != null && bulletsIndices != null && topIndex != this.topIndex) {
int delta = topIndex - this.topIndex;
if (delta > 0) {
if (delta < bullets.length) {
System.arraycopy(bullets, delta, bullets, 0, bullets.length - delta);
System.arraycopy(bulletsIndices, delta, bulletsIndices, 0, bulletsIndices.length - delta);
}
int startIndex = Math.max(0, bullets.length - delta);
for (int i = startIndex; i < bullets.length; i++) bullets[i] = null;
} else {
if (-delta < bullets.length) {
System.arraycopy(bullets, 0, bullets, -delta, bullets.length + delta);
System.arraycopy(bulletsIndices, 0, bulletsIndices, -delta, bulletsIndices.length + delta);
}
int endIndex = Math.min(bullets.length, -delta);
for (int i = 0; i < endIndex; i++) bullets[i] = null;
}
}
this.topIndex = topIndex;
layouts = newLayouts;
}
if (layouts != null) {
int layoutIndex = lineIndex - topIndex;
if (0 <= layoutIndex && layoutIndex < layouts.length) {
layout = layouts[layoutIndex];
if (layout != null) {
// Bug 520374: lineIndex can be >= linesSize.length
if(lineIndex < lineSizes.length && getLineSize(lineIndex).canLayout()) {
return layout;
}
} else {
layout = layouts[layoutIndex] = new TextLayout(device);
}
}
}
}
if (layout == null) layout = new TextLayout(device);
String line = content.getLine(lineIndex);
int lineOffset = content.getOffsetAtLine(lineIndex);
int[] segments = null;
char[] segmentChars = null;
int indent = 0;
int wrapIndent = 0;
int verticalIndent = 0;
int alignment = SWT.LEFT;
int textDirection = orientation;
boolean justify = false;
int[] tabs = {tabWidth};
Bullet bullet = null;
int[] ranges = null;
StyleRange[] styles = null;
int rangeStart = 0, styleCount = 0;
StyledTextEvent event = null;
if (styledText != null) {
event = styledText.getBidiSegments(lineOffset, line);
if (event != null) {
segments = event.segments;
segmentChars = event.segmentsChars;
}
event = styledText.getLineStyleData(lineOffset, line);
indent = styledText.indent;
wrapIndent = styledText.wrapIndent;
alignment = styledText.alignment;
if (styledText.isAutoDirection()) {
textDirection = SWT.AUTO_TEXT_DIRECTION;
} else if ((styledText.getStyle() & SWT.FLIP_TEXT_DIRECTION) != 0) {
textDirection = orientation == SWT.RIGHT_TO_LEFT ? SWT.LEFT_TO_RIGHT : SWT.RIGHT_TO_LEFT;
}
justify = styledText.justify;
if (styledText.tabs != null) tabs = styledText.tabs;
}
if (event != null) {
indent = event.indent;
verticalIndent = event.verticalIndent;
wrapIndent = event.wrapIndent;
alignment = event.alignment;
justify = event.justify;
bullet = event.bullet;
ranges = event.ranges;
styles = event.styles;
if (event.tabStops != null) tabs = event.tabStops;
if (styles != null) {
styleCount = styles.length;
if (styledText.isFixedLineHeight()) {
for (int i = 0; i < styleCount; i++) {
if (styles[i].isVariableHeight()) {
styledText.hasStyleWithVariableHeight = true;
styledText.verticalScrollOffset = -1;
styledText.redraw();
break;
}
}
}
}
if (bullets == null || bulletsIndices == null) {
bullets = new Bullet[CACHE_SIZE];
bulletsIndices = new int[CACHE_SIZE];
}
int index = lineIndex - topIndex;
if (0 <= index && index < CACHE_SIZE) {
bullets[index] = bullet;
bulletsIndices[index] = event.bulletIndex;
}
} else {
if (lines != null) {
LineInfo info = lines[lineIndex];
if (info != null) {
if ((info.flags & INDENT) != 0) indent = info.indent;
if ((info.flags & VERTICAL_INDENT) != 0) verticalIndent = info.verticalIndent;
if ((info.flags & WRAP_INDENT) != 0) wrapIndent = info.wrapIndent;
if ((info.flags & ALIGNMENT) != 0) alignment = info.alignment;
if ((info.flags & JUSTIFY) != 0) justify = info.justify;
if ((info.flags & SEGMENTS) != 0) segments = info.segments;
if ((info.flags & SEGMENT_CHARS) != 0) segmentChars = info.segmentsChars;
if ((info.flags & TABSTOPS) != 0) tabs = info.tabStops;
}
}
if (bulletsIndices != null) {
bullets = null;
bulletsIndices = null;
}
if (bullets != null) {
for (Bullet b : bullets) {
if (b.indexOf(lineIndex) != -1) {
bullet = b;
break;
}
}
}
ranges = this.ranges;
styles = this.styles;
styleCount = this.styleCount;
if (ranges != null) {
rangeStart = getRangeIndex(lineOffset, -1, styleCount << 1);
} else {
rangeStart = getRangeIndex(lineOffset, -1, styleCount);
}
}
if (bullet != null) {
StyleRange style = bullet.style;
GlyphMetrics metrics = style.metrics;
indent += metrics.width;
}
// prepare styles, as it may change the line content, do it before calling layout.setText()
// This needs to happen early to handle the case of GlyphMetrics on \t.
// The root cause is that TextLayout doesn't return the right value for the bounds when
// GlyphMetrics are applied on \t. A better fix could be implemented directly in (all 3)
// TextLayout classes.
List styleEntries = new ArrayList<>();
int lastOffset = 0;
int length = line.length();
if (styles != null) {
if (ranges != null) {
int rangeCount = styleCount << 1;
for (int i = rangeStart; i < rangeCount; i += 2) {
int start, end;
if (lineOffset > ranges[i]) {
start = 0;
end = Math.min (length, ranges[i + 1] - lineOffset + ranges[i]);
} else {
start = ranges[i] - lineOffset;
end = Math.min(length, start + ranges[i + 1]);
}
if (start >= length) break;
if (lastOffset < start) {
styleEntries.add(new StyleEntry(null, lastOffset, start - 1));
}
TextStyle style = getStyleRange(styles[i >> 1]);
int endIndex = Math.max(start, Math.min(length, end + 1));
if (style.metrics != null && line.substring(start, endIndex).contains("\t")) {
line =
line.substring(0, start) +
line.substring(start, endIndex).replace('\t', ' ') +
(end < line.length() ? line.substring(end + 1, line.length()) : "");
}
styleEntries.add(new StyleEntry(style, start, end));
lastOffset = Math.max(lastOffset, end);
}
} else {
for (int i = rangeStart; i < styleCount; i++) {
int start, end;
if (lineOffset > styles[i].start) {
start = 0;
end = Math.min (length, styles[i].length - lineOffset + styles[i].start);
} else {
start = styles[i].start - lineOffset;
end = Math.min(length, start + styles[i].length);
}
if (start >= length) break;
if (lastOffset < start) {
styleEntries.add(new StyleEntry(null, lastOffset, start - 1));
}
TextStyle style = getStyleRange(styles[i]);
int endIndex = Math.max(start, Math.min(length, end + 1));
if (style.metrics != null && line.substring(start, endIndex).contains("\t")) {
line =
line.substring(0, start) +
line.substring(start, endIndex).replace('\t', ' ') +
(end < line.length() ? line.substring(end + 1, line.length()) : "");
}
styleEntries.add(new StyleEntry(style, start, end));
lastOffset = Math.max(lastOffset, end);
}
}
}
if (lastOffset < length) styleEntries.add(new StyleEntry(null, lastOffset, length));
layout.setFont(regularFont);
layout.setAscent(ascent);
layout.setDescent(descent);
layout.setFixedLineMetrics(fixedLineMetrics);
layout.setText(line);
layout.setOrientation(orientation);
layout.setSegments(segments);
layout.setSegmentsChars(segmentChars);
layout.setWidth(width);
layout.setSpacing(lineSpacing);
layout.setTabs(tabs);
layout.setDefaultTabWidth(tabLength);
layout.setIndent(indent);
layout.setVerticalIndent(verticalIndent);
layout.setWrapIndent(wrapIndent);
layout.setAlignment(alignment);
layout.setJustify(justify);
layout.setTextDirection(textDirection);
// apply styles, must be done after layout.setText()
for (StyleEntry styleEntry : styleEntries) {
layout.setStyle(styleEntry.style, styleEntry.start, styleEntry.end);
}
if (styledText != null && styledText.ime != null) {
IME ime = styledText.ime;
int compositionOffset = ime.getCompositionOffset();
if (compositionOffset != -1 && compositionOffset <= content.getCharCount()) {
int commitCount = ime.getCommitCount();
int compositionLength = ime.getText().length();
if (compositionLength != commitCount) {
int compositionLine = content.getLineAtOffset(compositionOffset);
if (compositionLine == lineIndex) {
int[] imeRanges = ime.getRanges();
TextStyle[] imeStyles = ime.getStyles();
if (imeRanges.length > 0) {
for (int i = 0; i < imeStyles.length; i++) {
int start = imeRanges[i*2] - lineOffset;
int end = imeRanges[i*2+1] - lineOffset;
TextStyle imeStyle = imeStyles[i], userStyle;
for (int j = start; j <= end; j++) {
if (!(0 <= j && j < length)) break;
userStyle = layout.getStyle(cap(layout, j));
if (userStyle == null && j > 0) userStyle = layout.getStyle(cap(layout, j - 1));
if (userStyle == null && j + 1 < length) userStyle = layout.getStyle(cap(layout, j + 1));
if (userStyle == null) {
layout.setStyle(imeStyle, j, j);
} else {
TextStyle newStyle = new TextStyle(imeStyle);
if (newStyle.font == null) newStyle.font = userStyle.font;
if (newStyle.foreground == null) newStyle.foreground = userStyle.foreground;
if (newStyle.background == null) newStyle.background = userStyle.background;
layout.setStyle(newStyle, j, j);
}
}
}
} else {
int start = compositionOffset - lineOffset;
int end = start + compositionLength - 1;
TextStyle userStyle = layout.getStyle(cap(layout, start));
if (userStyle == null) {
if (start > 0) userStyle = layout.getStyle(cap(layout, start - 1));
if (userStyle == null && end + 1 < length) userStyle = layout.getStyle(cap(layout, end + 1));
if (userStyle != null) {
TextStyle newStyle = new TextStyle();
newStyle.font = userStyle.font;
newStyle.foreground = userStyle.foreground;
newStyle.background = userStyle.background;
layout.setStyle(newStyle, start, end);
}
}
}
}
}
}
}
if (styledText != null && styledText.isFixedLineHeight()) {
int index = -1;
int lineCount = layout.getLineCount();
int height = getLineHeight();
for (int i = 0; i < lineCount; i++) {
int lineHeight = layout.getLineBounds(i).height;
if (lineHeight > height) {
height = lineHeight;
index = i;
}
}
if (index != -1) {
FontMetrics metrics = layout.getLineMetrics(index);
ascent = metrics.getAscent() + metrics.getLeading();
descent = metrics.getDescent();
if (layouts != null) {
for (TextLayout l : layouts) {
if (l != null && l != layout) {
l.setAscent(ascent);
l.setDescent(descent);
}
}
}
styledText.calculateScrollBars();
if (styledText.verticalScrollOffset != 0) {
int topIndex = styledText.topIndex;
int topIndexY = styledText.topIndexY;
int lineHeight = getLineHeight();
int newVerticalScrollOffset;
if (topIndexY >= 0) {
newVerticalScrollOffset = (topIndex - 1) * lineHeight + lineHeight - topIndexY;
} else {
newVerticalScrollOffset = topIndex * lineHeight - topIndexY;
}
styledText.scrollVertical(newVerticalScrollOffset - styledText.verticalScrollOffset, true);
}
if (styledText.isBidiCaret()) styledText.createCaretBitmaps();
styledText.caretDirection = SWT.NULL;
styledText.setCaretLocations();
styledText.redraw();
}
}
return layout;
}
int getWidth() {
return maxWidth;
}
void reset() {
if (layouts != null) {
for (TextLayout layout : layouts) {
if (layout != null) layout.dispose();
}
layouts = null;
}
topIndex = -1;
stylesSetCount = styleCount = lineCount = 0;
ranges = null;
styles = null;
stylesSet = null;
lines = null;
lineSizes = null;
bullets = null;
bulletsIndices = null;
redrawLines = null;
hasLinks = false;
}
void reset(int startLine, int lineCount) {
int endLine = startLine + lineCount;
if (startLine < 0 || endLine > lineSizes.length) return;
SortedSet lines = new TreeSet<>();
for (int i = startLine; i < endLine; i++) {
lines.add(Integer.valueOf(i));
}
reset(lines);
}
void reset(Set lines) {
if (lines == null || lines.isEmpty()) return;
int resetLineCount = 0;
for (Integer line : lines) {
if (line >= 0 || line < lineCount) {
resetLineCount++;
getLineSize(line.intValue()).resetSize();
}
}
if (linesInAverageLineHeight > resetLineCount) {
linesInAverageLineHeight -= resetLineCount;
} else {
linesInAverageLineHeight = 0;
averageLineHeight = 0.0f;
}
if (lines.contains(Integer.valueOf(maxWidthLineIndex))) {
maxWidth = 0;
maxWidthLineIndex = -1;
if (resetLineCount != this.lineCount) {
for (int i = 0; i < this.lineCount; i++) {
LineSizeInfo lineSize = getLineSize(i);
if (lineSize.width > maxWidth) {
maxWidth = lineSize.width;
maxWidthLineIndex = i;
}
}
}
}
}
void setContent(StyledTextContent content) {
reset();
this.content = content;
lineCount = content.getLineCount();
lineSizes = new LineSizeInfo[lineCount];
maxWidth = 0;
maxWidthLineIndex = -1;
reset(0, lineCount);
}
/**
* See {@link TextLayout#setFixedLineMetrics}
*
* @since 3.125
*/
public void setFixedLineMetrics(FontMetrics metrics) {
fixedLineMetrics = metrics;
}
void setFont(Font font, int tabs) {
TextLayout layout = new TextLayout(device);
layout.setFont(regularFont);
tabLength = tabs;
if (font != null) {
if (boldFont != null) boldFont.dispose();
if (italicFont != null) italicFont.dispose();
if (boldItalicFont != null) boldItalicFont.dispose();
boldFont = italicFont = boldItalicFont = null;
regularFont = font;
layout.setText(" ");
layout.setFont(font);
layout.setStyle(new TextStyle(getFont(SWT.NORMAL), null, null), 0, 0);
layout.setStyle(new TextStyle(getFont(SWT.BOLD), null, null), 1, 1);
layout.setStyle(new TextStyle(getFont(SWT.ITALIC), null, null), 2, 2);
layout.setStyle(new TextStyle(getFont(SWT.BOLD | SWT.ITALIC), null, null), 3, 3);
FontMetrics metrics = layout.getLineMetrics(0);
ascent = metrics.getAscent() + metrics.getLeading();
descent = metrics.getDescent();
boldFont.dispose();
italicFont.dispose();
boldItalicFont.dispose();
boldFont = italicFont = boldItalicFont = null;
}
layout.dispose();
layout = new TextLayout(device);
layout.setFont(regularFont);
StringBuilder tabBuffer = new StringBuilder(tabs);
for (int i = 0; i < tabs; i++) {
tabBuffer.append(' ');
}
layout.setText(tabBuffer.toString());
tabWidth = layout.getBounds().width;
layout.dispose();
if (styledText != null) {
GC gc = new GC(styledText);
averageCharWidth = (int) gc.getFontMetrics().getAverageCharacterWidth();
fixedPitch = gc.stringExtent("l").x == gc.stringExtent("W").x; //$NON-NLS-1$ //$NON-NLS-2$
gc.dispose();
}
}
void setLineAlignment(int startLine, int count, int alignment) {
if (lines == null) lines = new LineInfo[lineCount];
for (int i = startLine; i < startLine + count; i++) {
if (lines[i] == null) {
lines[i] = new LineInfo();
}
lines[i].flags |= ALIGNMENT;
lines[i].alignment = alignment;
}
}
void setLineBackground(int startLine, int count, Color background) {
if (lines == null) lines = new LineInfo[lineCount];
for (int i = startLine; i < startLine + count; i++) {
if (lines[i] == null) {
lines[i] = new LineInfo();
}
lines[i].flags |= BACKGROUND;
lines[i].background = background;
}
}
void setLineBullet(int startLine, int count, Bullet bullet) {
if (bulletsIndices != null) {
bulletsIndices = null;
bullets = null;
}
if (bullets == null) {
if (bullet == null) return;
bullets = new Bullet[1];
bullets[0] = bullet;
}
int index = 0;
while (index < bullets.length) {
if (bullet == bullets[index]) break;
index++;
}
if (bullet != null) {
if (index == bullets.length) {
Bullet[] newBulletsList = new Bullet[bullets.length + 1];
System.arraycopy(bullets, 0, newBulletsList, 0, bullets.length);
newBulletsList[index] = bullet;
bullets = newBulletsList;
}
bullet.addIndices(startLine, count);
} else {
updateBullets(startLine, count, 0, false);
styledText.redrawLinesBullet(redrawLines);
redrawLines = null;
}
}
void setLineIndent(int startLine, int count, int indent) {
if (lines == null) lines = new LineInfo[lineCount];
for (int i = startLine; i < startLine + count; i++) {
if (lines[i] == null) {
lines[i] = new LineInfo();
}
lines[i].flags |= INDENT;
lines[i].indent = indent;
}
}
void setLineVerticalIndent(int lineIndex, int verticalLineIndent) {
if (lines == null)
lines = new LineInfo[lineCount];
if (lines[lineIndex] == null) {
lines[lineIndex] = new LineInfo();
}
lines[lineIndex].flags |= VERTICAL_INDENT;
int delta = verticalLineIndent - lines[lineIndex].verticalIndent;
lines[lineIndex].verticalIndent = verticalLineIndent;
LineSizeInfo info = getLineSize(lineIndex);
if (!info.needsRecalculateHeight()) {
info.height += delta;
}
}
void setLineWrapIndent(int startLine, int count, int wrapIndent) {
if (lines == null) lines = new LineInfo[lineCount];
for (int i = startLine; i < startLine + count; i++) {
if (lines[i] == null) {
lines[i] = new LineInfo();
}
lines[i].flags |= WRAP_INDENT;
lines[i].wrapIndent = wrapIndent;
}
}
void setLineJustify(int startLine, int count, boolean justify) {
if (lines == null) lines = new LineInfo[lineCount];
for (int i = startLine; i < startLine + count; i++) {
if (lines[i] == null) {
lines[i] = new LineInfo();
}
lines[i].flags |= JUSTIFY;
lines[i].justify = justify;
}
}
void setLineSegments(int startLine, int count, int[] segments) {
if (lines == null) lines = new LineInfo[lineCount];
for (int i = startLine; i < startLine + count; i++) {
if (lines[i] == null) {
lines[i] = new LineInfo();
}
lines[i].flags |= SEGMENTS;
lines[i].segments = segments;
}
}
void setLineSegmentChars(int startLine, int count, char[] segmentChars) {
if (lines == null) lines = new LineInfo[lineCount];
for (int i = startLine; i < startLine + count; i++) {
if (lines[i] == null) {
lines[i] = new LineInfo();
}
lines[i].flags |= SEGMENT_CHARS;
lines[i].segmentsChars = segmentChars;
}
}
void setLineTabStops(int startLine, int count, int[] tabStops) {
if (lines == null) lines = new LineInfo[lineCount];
for (int i = startLine; i < startLine + count; i++) {
if (lines[i] == null) {
lines[i] = new LineInfo();
}
lines[i].flags |= TABSTOPS;
lines[i].tabStops = tabStops;
}
}
void setLineSpacingProvider(StyledTextLineSpacingProvider lineSpacingProvider) {
this.lineSpacingProvider = lineSpacingProvider;
}
void setStyleRanges (int[] newRanges, StyleRange[] newStyles) {
if (newStyles == null) {
stylesSetCount = styleCount = 0;
ranges = null;
styles = null;
stylesSet = null;
hasLinks = false;
return;
}
if (newRanges == null && COMPACT_STYLES) {
newRanges = new int[newStyles.length << 1];
StyleRange[] tmpStyles = new StyleRange[newStyles.length];
if (stylesSet == null) stylesSet = new StyleRange[4];
for (int i = 0, j = 0; i < newStyles.length; i++) {
StyleRange newStyle = newStyles[i];
newRanges[j++] = newStyle.start;
newRanges[j++] = newStyle.length;
int index = 0;
while (index < stylesSetCount) {
if (stylesSet[index].similarTo(newStyle)) break;
index++;
}
if (index == stylesSetCount) {
if (stylesSetCount == stylesSet.length) {
StyleRange[] tmpStylesSet = new StyleRange[stylesSetCount + 4];
System.arraycopy(stylesSet, 0, tmpStylesSet, 0, stylesSetCount);
stylesSet = tmpStylesSet;
}
stylesSet[stylesSetCount++] = newStyle;
}
tmpStyles[i] = stylesSet[index];
}
newStyles = tmpStyles;
}
if (styleCount == 0) {
if (newRanges != null) {
ranges = new int[newRanges.length];
System.arraycopy(newRanges, 0, ranges, 0, ranges.length);
}
styles = new StyleRange[newStyles.length];
System.arraycopy(newStyles, 0, styles, 0, styles.length);
styleCount = newStyles.length;
return;
}
if (newRanges != null && ranges == null) {
ranges = new int[styles.length << 1];
for (int i = 0, j = 0; i < styleCount; i++) {
ranges[j++] = styles[i].start;
ranges[j++] = styles[i].length;
}
}
if (newRanges == null && ranges != null) {
newRanges = new int[newStyles.length << 1];
for (int i = 0, j = 0; i < newStyles.length; i++) {
newRanges[j++] = newStyles[i].start;
newRanges[j++] = newStyles[i].length;
}
}
if (ranges != null) {
int rangeCount = styleCount << 1;
int start = newRanges[0];
int modifyStart = getRangeIndex(start, -1, rangeCount), modifyEnd;
boolean insert = modifyStart == rangeCount;
if (!insert) {
int end = newRanges[newRanges.length - 2] + newRanges[newRanges.length - 1];
modifyEnd = getRangeIndex(end, modifyStart - 1, rangeCount);
insert = modifyStart == modifyEnd && ranges[modifyStart] >= end;
}
if (insert) {
addMerge(newRanges, newStyles, newRanges.length, modifyStart, modifyStart);
return;
}
modifyEnd = modifyStart;
int[] mergeRanges = new int[6];
StyleRange[] mergeStyles = new StyleRange[3];
for (int i = 0; i < newRanges.length; i += 2) {
int newStart = newRanges[i];
int newEnd = newStart + newRanges[i + 1];
if (newStart == newEnd) continue;
int modifyLast = 0, mergeCount = 0;
while (modifyEnd < rangeCount) {
if (newStart >= ranges[modifyStart] + ranges[modifyStart + 1]) modifyStart += 2;
if (ranges[modifyEnd] + ranges[modifyEnd + 1] > newEnd) break;
modifyEnd += 2;
}
if (ranges[modifyStart] < newStart && newStart < ranges[modifyStart] + ranges[modifyStart + 1]) {
mergeStyles[mergeCount >> 1] = styles[modifyStart >> 1];
mergeRanges[mergeCount] = ranges[modifyStart];
mergeRanges[mergeCount + 1] = newStart - ranges[modifyStart];
mergeCount += 2;
}
mergeStyles[mergeCount >> 1] = newStyles[i >> 1];
mergeRanges[mergeCount] = newStart;
mergeRanges[mergeCount + 1] = newRanges[i + 1];
mergeCount += 2;
if (modifyEnd < rangeCount && ranges[modifyEnd] < newEnd && newEnd < ranges[modifyEnd] + ranges[modifyEnd + 1]) {
mergeStyles[mergeCount >> 1] = styles[modifyEnd >> 1];
mergeRanges[mergeCount] = newEnd;
mergeRanges[mergeCount + 1] = ranges[modifyEnd] + ranges[modifyEnd + 1] - newEnd;
mergeCount += 2;
modifyLast = 2;
}
int grow = addMerge(mergeRanges, mergeStyles, mergeCount, modifyStart, modifyEnd + modifyLast);
rangeCount += grow;
modifyStart = modifyEnd += grow;
}
} else {
int start = newStyles[0].start;
int modifyStart = getRangeIndex(start, -1, styleCount), modifyEnd;
boolean insert = modifyStart == styleCount;
if (!insert) {
int end = newStyles[newStyles.length - 1].start + newStyles[newStyles.length - 1].length;
modifyEnd = getRangeIndex(end, modifyStart - 1, styleCount);
insert = modifyStart == modifyEnd && styles[modifyStart].start >= end;
}
if (insert) {
addMerge(newStyles, newStyles.length, modifyStart, modifyStart);
return;
}
modifyEnd = modifyStart;
StyleRange[] mergeStyles = new StyleRange[3];
for (StyleRange newStyle : newStyles) {
StyleRange style;
int newStart = newStyle.start;
int newEnd = newStart + newStyle.length;
if (newStart == newEnd) continue;
int modifyLast = 0, mergeCount = 0;
while (modifyEnd < styleCount) {
if (newStart >= styles[modifyStart].start + styles[modifyStart].length) modifyStart++;
if (styles[modifyEnd].start + styles[modifyEnd].length > newEnd) break;
modifyEnd++;
}
style = styles[modifyStart];
if (style.start < newStart && newStart < style.start + style.length) {
style = mergeStyles[mergeCount++] = (StyleRange)style.clone();
style.length = newStart - style.start;
}
mergeStyles[mergeCount++] = newStyle;
if (modifyEnd < styleCount) {
style = styles[modifyEnd];
if (style.start < newEnd && newEnd < style.start + style.length) {
style = mergeStyles[mergeCount++] = (StyleRange)style.clone();
style.length += style.start - newEnd;
style.start = newEnd;
modifyLast = 1;
}
}
int grow = addMerge(mergeStyles, mergeCount, modifyStart, modifyEnd + modifyLast);
modifyStart = modifyEnd += grow;
}
}
}
void textChanging(TextChangingEvent event) {
int start = event.start;
int newCharCount = event.newCharCount, replaceCharCount = event.replaceCharCount;
int newLineCount = event.newLineCount, replaceLineCount = event.replaceLineCount;
updateRanges(start, replaceCharCount, newCharCount);
int startLine = content.getLineAtOffset(start);
if (replaceCharCount == content.getCharCount()) lines = null;
if (replaceLineCount == lineCount) {
lineCount = newLineCount;
lineSizes = new LineSizeInfo[lineCount];
reset(0, lineCount);
} else {
int startIndex = startLine + replaceLineCount + 1;
int endIndex = startLine + newLineCount + 1;
if(lineCount < startLine) {
SWT.error(SWT.ERROR_INVALID_RANGE, null, "bug 478020: lineCount < startLine: " + lineCount + ":" + startLine);
}
if(lineCount < startIndex) {
SWT.error(SWT.ERROR_INVALID_RANGE, null, "bug 478020: lineCount < startIndex: " + lineCount + ":" + startIndex);
}
int delta = newLineCount - replaceLineCount;
if (lineCount + delta > lineSizes.length) {
LineSizeInfo[] newLineSizes = new LineSizeInfo[lineCount + delta + GROW];
System.arraycopy(lineSizes, 0, newLineSizes, 0, lineCount);
lineSizes = newLineSizes;
}
if (lines != null) {
if (lineCount + delta > lines.length) {
LineInfo[] newLines = new LineInfo[lineCount + delta + GROW];
System.arraycopy(lines, 0, newLines, 0, lineCount);
lines = newLines;
}
}
System.arraycopy(lineSizes, startIndex, lineSizes, endIndex, lineCount - startIndex);
for (int i = startLine; i < endIndex; i++) {
lineSizes[i] = null;
}
for (int i = lineCount + delta; i < lineCount; i++) {
lineSizes[i] = null;
}
if (layouts != null) {
int layoutStartLine = startLine - topIndex;
int layoutEndLine = layoutStartLine + replaceLineCount + 1;
for (int i = layoutStartLine; i < layoutEndLine; i++) {
if (0 <= i && i < layouts.length) {
if (layouts[i] != null) layouts[i].dispose();
layouts[i] = null;
if (bullets != null && bulletsIndices != null) bullets[i] = null;
}
}
if (delta > 0) {
for (int i = layouts.length - 1; i >= layoutEndLine; i--) {
if (0 <= i && i < layouts.length) {
endIndex = i + delta;
if (0 <= endIndex && endIndex < layouts.length) {
layouts[endIndex] = layouts[i];
layouts[i] = null;
if (bullets != null && bulletsIndices != null) {
bullets[endIndex] = bullets[i];
bulletsIndices[endIndex] = bulletsIndices[i];
bullets[i] = null;
}
} else {
if (layouts[i] != null) layouts[i].dispose();
layouts[i] = null;
if (bullets != null && bulletsIndices != null) bullets[i] = null;
}
}
}
} else if (delta < 0) {
for (int i = layoutEndLine; i < layouts.length; i++) {
if (0 <= i && i < layouts.length) {
endIndex = i + delta;
if (0 <= endIndex && endIndex < layouts.length) {
layouts[endIndex] = layouts[i];
layouts[i] = null;
if (bullets != null && bulletsIndices != null) {
bullets[endIndex] = bullets[i];
bulletsIndices[endIndex] = bulletsIndices[i];
bullets[i] = null;
}
} else {
if (layouts[i] != null) layouts[i].dispose();
layouts[i] = null;
if (bullets != null && bulletsIndices != null) bullets[i] = null;
}
}
}
}
}
if (replaceLineCount != 0 || newLineCount != 0) {
int startLineOffset = content.getOffsetAtLine(startLine);
if (startLineOffset != start) startLine++;
updateBullets(startLine, replaceLineCount, newLineCount, true);
if (lines != null) {
startIndex = startLine + replaceLineCount;
endIndex = startLine + newLineCount;
System.arraycopy(lines, startIndex, lines, endIndex, lineCount - startIndex);
for (int i = startLine; i < endIndex; i++) {
lines[i] = null;
}
for (int i = lineCount + delta; i < lineCount; i++) {
lines[i] = null;
}
}
}
lineCount += delta;
if (maxWidthLineIndex != -1 && startLine <= maxWidthLineIndex && maxWidthLineIndex <= startLine + replaceLineCount) {
maxWidth = 0;
maxWidthLineIndex = -1;
for (int i = 0; i < lineCount; i++) {
LineSizeInfo lineSize = getLineSize(i);
if (lineSize.width > maxWidth) {
maxWidth = lineSize.width;
maxWidthLineIndex = i;
}
}
}
}
}
void updateBullets(int startLine, int replaceLineCount, int newLineCount, boolean update) {
if (bullets == null) return;
if (bulletsIndices != null) return;
for (Bullet bullet : bullets) {
int[] lines = bullet.removeIndices(startLine, replaceLineCount, newLineCount, update);
if (lines != null) {
if (redrawLines == null) {
redrawLines = lines;
} else {
int[] newRedrawBullets = new int[redrawLines.length + lines.length];
System.arraycopy(redrawLines, 0, newRedrawBullets, 0, redrawLines.length);
System.arraycopy(lines, 0, newRedrawBullets, redrawLines.length, lines.length);
redrawLines = newRedrawBullets;
}
}
}
int removed = 0;
for (Bullet bullet : bullets) {
if (bullet.size() == 0) removed++;
}
if (removed > 0) {
if (removed == bullets.length) {
bullets = null;
} else {
Bullet[] newBulletsList = new Bullet[bullets.length - removed];
for (int i = 0, j = 0; i < bullets.length; i++) {
Bullet bullet = bullets[i];
if (bullet.size() > 0) newBulletsList[j++] = bullet;
}
bullets = newBulletsList;
}
}
}
void updateRanges(int start, int replaceCharCount, int newCharCount) {
if (styleCount == 0 || (replaceCharCount == 0 && newCharCount == 0)) return;
if (ranges != null) {
int rangeCount = styleCount << 1;
int modifyStart = getRangeIndex(start, -1, rangeCount);
if (modifyStart == rangeCount) return;
int end = start + replaceCharCount;
int modifyEnd = getRangeIndex(end, modifyStart - 1, rangeCount);
int offset = newCharCount - replaceCharCount;
if (modifyStart == modifyEnd && ranges[modifyStart] < start && end < ranges[modifyEnd] + ranges[modifyEnd + 1]) {
if (newCharCount == 0) {
ranges[modifyStart + 1] -= replaceCharCount;
modifyEnd += 2;
} else {
if (rangeCount + 2 > ranges.length) {
int[] newRanges = new int[ranges.length + (GROW << 1)];
System.arraycopy(ranges, 0, newRanges, 0, rangeCount);
ranges = newRanges;
StyleRange[] newStyles = new StyleRange[styles.length + GROW];
System.arraycopy(styles, 0, newStyles, 0, styleCount);
styles = newStyles;
}
System.arraycopy(ranges, modifyStart + 2, ranges, modifyStart + 4, rangeCount - (modifyStart + 2));
System.arraycopy(styles, (modifyStart + 2) >> 1, styles, (modifyStart + 4) >> 1, styleCount - ((modifyStart + 2) >> 1));
ranges[modifyStart + 3] = ranges[modifyStart] + ranges[modifyStart + 1] - end;
ranges[modifyStart + 2] = start + newCharCount;
ranges[modifyStart + 1] = start - ranges[modifyStart];
styles[(modifyStart >> 1) + 1] = styles[modifyStart >> 1];
rangeCount += 2;
styleCount++;
modifyEnd += 4;
}
if (offset != 0) {
for (int i = modifyEnd; i < rangeCount; i += 2) {
ranges[i] += offset;
}
}
} else {
if (ranges[modifyStart] < start && start < ranges[modifyStart] + ranges[modifyStart + 1]) {
ranges[modifyStart + 1] = start - ranges[modifyStart];
modifyStart += 2;
}
if (modifyEnd < rangeCount && ranges[modifyEnd] < end && end < ranges[modifyEnd] + ranges[modifyEnd + 1]) {
ranges[modifyEnd + 1] = ranges[modifyEnd] + ranges[modifyEnd + 1] - end;
ranges[modifyEnd] = end;
}
if (offset != 0) {
for (int i = modifyEnd; i < rangeCount; i += 2) {
ranges[i] += offset;
}
}
System.arraycopy(ranges, modifyEnd, ranges, modifyStart, rangeCount - modifyEnd);
System.arraycopy(styles, modifyEnd >> 1, styles, modifyStart >> 1, styleCount - (modifyEnd >> 1));
styleCount -= (modifyEnd - modifyStart) >> 1;
}
} else {
int modifyStart = getRangeIndex(start, -1, styleCount);
if (modifyStart == styleCount) return;
int end = start + replaceCharCount;
int modifyEnd = getRangeIndex(end, modifyStart - 1, styleCount);
int offset = newCharCount - replaceCharCount;
if (modifyStart == modifyEnd && styles[modifyStart].start < start && end < styles[modifyEnd].start + styles[modifyEnd].length) {
if (newCharCount == 0) {
styles[modifyStart].length -= replaceCharCount;
modifyEnd++;
} else {
if (styleCount + 1 > styles.length) {
StyleRange[] newStyles = new StyleRange[styles.length + GROW];
System.arraycopy(styles, 0, newStyles, 0, styleCount);
styles = newStyles;
}
System.arraycopy(styles, modifyStart + 1, styles, modifyStart + 2, styleCount - (modifyStart + 1));
styles[modifyStart + 1] = (StyleRange)styles[modifyStart].clone();
styles[modifyStart + 1].length = styles[modifyStart].start + styles[modifyStart].length - end;
styles[modifyStart + 1].start = start + newCharCount;
styles[modifyStart].length = start - styles[modifyStart].start;
styleCount++;
modifyEnd += 2;
}
if (offset != 0) {
for (int i = modifyEnd; i < styleCount; i++) {
styles[i].start += offset;
}
}
} else {
if (styles[modifyStart].start < start && start < styles[modifyStart].start + styles[modifyStart].length) {
styles[modifyStart].length = start - styles[modifyStart].start;
modifyStart++;
}
if (modifyEnd < styleCount && styles[modifyEnd].start < end && end < styles[modifyEnd].start + styles[modifyEnd].length) {
styles[modifyEnd].length = styles[modifyEnd].start + styles[modifyEnd].length - end;
styles[modifyEnd].start = end;
}
if (offset != 0) {
for (int i = modifyEnd; i < styleCount; i++) {
styles[i].start += offset;
}
}
System.arraycopy(styles, modifyEnd, styles, modifyStart, styleCount - modifyEnd);
styleCount -= modifyEnd - modifyStart;
}
}
}
public boolean hasVerticalIndent() {
return Arrays.stream(lines).filter(Objects::nonNull) //
.mapToInt(line -> line.verticalIndent) //
.anyMatch(n -> n != 0);
}
}
© 2015 - 2024 Weber Informatics LLC | Privacy Policy