/**
* Renders using the given rendering surface and area on that surface.
*
* @param g the rendering surface to use
* @param allocation the allocated region to render into
* @see View#paint
*/
public void paint(Graphics g, Shape allocation) {
super.paint(g, allocation);
Rectangle alloc = allocation.getBounds();
Rectangle clip = g.getClipBounds();
// Since listPainter paints in the insets we have to check for the
// case where the child is not painted because the paint region is
// to the left of the child. This assumes the ListPainter paints in
// the left margin.
if ((clip.x + clip.width) < (alloc.x + getLeftInset())) {
Rectangle childRect = alloc;
alloc = getInsideAllocation(allocation);
int n = getViewCount();
int endY = clip.y + clip.height;
for (int i = 0; i < n; i++) {
childRect.setBounds(alloc);
childAllocation(i, childRect);
if (childRect.y < endY) {
if ((childRect.y + childRect.height) >= clip.y) {
listPainter.paint(
g, childRect.x, childRect.y, childRect.width, childRect.height, this, i);
}
} else {
break;
}
}
}
}
/**
* Paints the word-wrapped text.
*
* @param g The graphics context in which to paint.
* @param a The shape (usually a rectangle) in which to paint.
*/
public void paint(Graphics g, Shape a) {
Rectangle alloc = (a instanceof Rectangle) ? (Rectangle) a : a.getBounds();
tabBase = alloc.x;
Graphics2D g2d = (Graphics2D) g;
host = (RSyntaxTextArea) getContainer();
int ascent = host.getMaxAscent();
int fontHeight = host.getLineHeight();
FoldManager fm = host.getFoldManager();
TokenPainter painter = host.getTokenPainter();
Element root = getElement();
// Whether token styles should always be painted, even in selections
int selStart = host.getSelectionStart();
int selEnd = host.getSelectionEnd();
boolean useSelectedTextColor = host.getUseSelectedTextColor();
int n = getViewCount(); // Number of lines.
int x = alloc.x + getLeftInset();
tempRect.y = alloc.y + getTopInset();
Rectangle clip = g.getClipBounds();
for (int i = 0; i < n; i++) {
tempRect.x = x + getOffset(X_AXIS, i);
// tempRect.y = y + getOffset(Y_AXIS, i);
tempRect.width = getSpan(X_AXIS, i);
tempRect.height = getSpan(Y_AXIS, i);
// System.err.println("For line " + i + ": tempRect==" + tempRect);
if (tempRect.intersects(clip)) {
Element lineElement = root.getElement(i);
int startOffset = lineElement.getStartOffset();
int endOffset = lineElement.getEndOffset() - 1; // Why always "-1"?
View view = getView(i);
if (!useSelectedTextColor
|| selStart == selEnd
|| (startOffset >= selEnd || endOffset < selStart)) {
drawView(painter, g2d, alloc, view, fontHeight, tempRect.y + ascent);
} else {
// System.out.println("Drawing line with selection: " + i);
drawViewWithSelection(
painter, g2d, alloc, view, fontHeight, tempRect.y + ascent, selStart, selEnd);
}
}
tempRect.y += tempRect.height;
Fold possibleFold = fm.getFoldForLine(i);
if (possibleFold != null && possibleFold.isCollapsed()) {
i += possibleFold.getCollapsedLineCount();
// Visible indicator of collapsed lines
Color c = RSyntaxUtilities.getFoldedLineBottomColor(host);
if (c != null) {
g.setColor(c);
g.drawLine(x, tempRect.y - 1, alloc.width, tempRect.y - 1);
}
}
}
}
/**
* Repaints the text.
*
* @param gfx The graphics context
*/
public void paint(Graphics gfx) {
Graphics2D g2 = (Graphics2D) gfx;
g2.setRenderingHint(
RenderingHints.KEY_TEXT_ANTIALIASING,
antialias
? RenderingHints.VALUE_TEXT_ANTIALIAS_ON
: RenderingHints.VALUE_TEXT_ANTIALIAS_OFF);
tabSize =
fm.charWidth(' ')
* ((Integer) textArea.getDocument().getProperty(PlainDocument.tabSizeAttribute))
.intValue();
Rectangle clipRect = gfx.getClipBounds();
gfx.setColor(getBackground());
gfx.fillRect(clipRect.x, clipRect.y, clipRect.width, clipRect.height);
// We don't use yToLine() here because that method doesn't
// return lines past the end of the document
int height = fm.getHeight();
int firstLine = textArea.getFirstLine();
int firstInvalid = firstLine + clipRect.y / height;
// Because the clipRect's height is usually an even multiple
// of the font height, we subtract 1 from it, otherwise one
// too many lines will always be painted.
int lastInvalid = firstLine + (clipRect.y + clipRect.height - 1) / height;
try {
TokenMarker tokenMarker = textArea.getDocument().getTokenMarker();
int x = textArea.getHorizontalOffset();
for (int line = firstInvalid; line <= lastInvalid; line++) {
paintLine(gfx, tokenMarker, line, x);
}
if (tokenMarker != null && tokenMarker.isNextLineRequested()) {
int h = clipRect.y + clipRect.height;
repaint(0, h, getWidth(), getHeight() - h);
}
} catch (Exception e) {
System.err.println(
"Error repainting line" + " range {" + firstInvalid + "," + lastInvalid + "}:");
e.printStackTrace();
}
}
/**
* Draw the line numbers
*
* @param g
*/
@Override
public void paintComponent(Graphics g) {
super.paintComponent(g);
((Graphics2D) g)
.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
// Determine the width of the space available to draw the line number
FontMetrics fontMetrics = component.getFontMetrics(component.getFont());
Insets insets = getInsets();
int availableWidth = getSize().width - insets.left - insets.right;
// Determine the rows to draw within the clipped bounds.
Rectangle clip = g.getClipBounds();
int rowStartOffset = component.viewToModel(new Point(0, clip.y));
int endOffset = component.viewToModel(new Point(0, clip.y + clip.height));
while (rowStartOffset <= endOffset) {
try {
if (isCurrentLine(rowStartOffset)) g.setColor(getCurrentLineForeground());
else g.setColor(getForeground());
// Get the line number as a string and then determine the
// "X" and "Y" offsets for drawing the string.
String lineNumber = getTextLineNumber(rowStartOffset);
int stringWidth = fontMetrics.stringWidth(lineNumber);
int x = getOffsetX(availableWidth, stringWidth) + insets.left;
int y = getOffsetY(rowStartOffset, fontMetrics);
g.drawString(lineNumber, x, y);
// Move to the next row
rowStartOffset = Utilities.getRowEnd(component, rowStartOffset) + 1;
} catch (Exception e) {
break;
}
}
}
/**
* Paints the word-wrapped text.
*
* @param g The graphics context in which to paint.
* @param a The shape (usually a rectangle) in which to paint.
*/
public void paint(Graphics g, Shape a) {
Rectangle alloc = (a instanceof Rectangle) ? (Rectangle) a : a.getBounds();
tabBase = alloc.x;
Graphics2D g2d = (Graphics2D) g;
host = (RSyntaxTextArea) getContainer();
int ascent = host.getMaxAscent();
int fontHeight = host.getLineHeight();
FoldManager fm = host.getFoldManager();
int n = getViewCount(); // Number of lines.
int x = alloc.x + getLeftInset();
tempRect.y = alloc.y + getTopInset();
Rectangle clip = g.getClipBounds();
for (int i = 0; i < n; i++) {
tempRect.x = x + getOffset(X_AXIS, i);
// tempRect.y = y + getOffset(Y_AXIS, i);
tempRect.width = getSpan(X_AXIS, i);
tempRect.height = getSpan(Y_AXIS, i);
// System.err.println("For line " + i + ": tempRect==" + tempRect);
if (tempRect.intersects(clip)) {
View view = getView(i);
drawView(g2d, alloc, view, fontHeight, tempRect.y + ascent);
}
tempRect.y += tempRect.height;
Fold possibleFold = fm.getFoldForLine(i);
if (possibleFold != null && possibleFold.isCollapsed()) {
i += possibleFold.getCollapsedLineCount();
// Visible indicator of collapsed lines
Color c = RSyntaxUtilities.getFoldedLineBottomColor(host);
if (c != null) {
g.setColor(c);
g.drawLine(x, tempRect.y - 1, alloc.width, tempRect.y - 1);
}
}
}
}
/**
* Actually paints the text area. Only lines that have been damaged are repainted.
*
* @param g The graphics context with which to paint.
* @param a The allocated region in which to render.
*/
@Override
public void paint(Graphics g, Shape a) {
RSyntaxDocument document = (RSyntaxDocument) getDocument();
Rectangle alloc = a.getBounds();
tabBase = alloc.x;
host = (RSyntaxTextArea) getContainer();
Rectangle clip = g.getClipBounds();
// An attempt to speed things up for files with long lines. Note that
// this will actually slow things down a bit for the common case of
// regular-length lines, but it doesn't make a perceivable difference.
clipStart = clip.x;
clipEnd = clipStart + clip.width;
lineHeight = host.getLineHeight();
ascent = host.getMaxAscent(); // metrics.getAscent();
int heightAbove = clip.y - alloc.y;
int linesAbove = Math.max(0, heightAbove / lineHeight);
FoldManager fm = host.getFoldManager();
linesAbove += fm.getHiddenLineCountAbove(linesAbove, true);
Rectangle lineArea = lineToRect(a, linesAbove);
int y = lineArea.y + ascent;
int x = lineArea.x;
Element map = getElement();
int lineCount = map.getElementCount();
// Whether token styles should always be painted, even in selections
int selStart = host.getSelectionStart();
int selEnd = host.getSelectionEnd();
RSyntaxTextAreaHighlighter h = (RSyntaxTextAreaHighlighter) host.getHighlighter();
Graphics2D g2d = (Graphics2D) g;
Token token;
// System.err.println("Painting lines: " + linesAbove + " to " + (endLine-1));
TokenPainter painter = host.getTokenPainter();
int line = linesAbove;
// int count = 0;
while (y < clip.y + clip.height + ascent && line < lineCount) {
Fold fold = fm.getFoldForLine(line);
Element lineElement = map.getElement(line);
int startOffset = lineElement.getStartOffset();
// int endOffset = (line==lineCount ? lineElement.getEndOffset()-1 :
// lineElement.getEndOffset()-1);
int endOffset = lineElement.getEndOffset() - 1; // Why always "-1"?
h.paintLayeredHighlights(g2d, startOffset, endOffset, a, host, this);
// Paint a line of text.
token = document.getTokenListForLine(line);
if (selStart == selEnd || startOffset >= selEnd || endOffset < selStart) {
drawLine(painter, token, g2d, x, y, line);
} else {
// System.out.println("Drawing line with selection: " + line);
drawLineWithSelection(painter, token, g2d, x, y, selStart, selEnd);
}
if (fold != null && fold.isCollapsed()) {
// Visible indicator of collapsed lines
Color c = RSyntaxUtilities.getFoldedLineBottomColor(host);
if (c != null) {
g.setColor(c);
g.drawLine(x, y + lineHeight - ascent - 1, host.getWidth(), y + lineHeight - ascent - 1);
}
// Skip to next line to paint, taking extra care for lines with
// block ends and begins together, e.g. "} else {"
do {
int hiddenLineCount = fold.getLineCount();
if (hiddenLineCount == 0) {
// Fold parser identified a zero-line fold region.
// This is really a bug, but we'll be graceful here
// and avoid an infinite loop.
break;
}
line += hiddenLineCount;
fold = fm.getFoldForLine(line);
} while (fold != null && fold.isCollapsed());
}
y += lineHeight;
line++;
// count++;
}
// System.out.println("SyntaxView: lines painted=" + count);
}
