-none- 2007-08-15 - By Bill Ensley
Back
A few months ago this message was posted to the list.
I have just got around to implementing it in my branch of iText.
The fix seems to work quite well, my question:
Is there a reason why this hasn't been integrated into the main
Trunk that I should be aware of when using it?
-Bill Ensley
www.bearprinting.com
> -- --Original Message-- --
> From: itext-questions-bounces@(protected)
> [mailto:itext-questions-bounces@(protected)] On
> Behalf Of John Hellerud
> Sent: Monday, April 30, 2007 9:50 AM
> To: itext-questions@(protected)
> Subject: [iText-questions] PdfGraphics2D.drawString()
> simulating bold, italic or bold-italic fonts.
>
> All,
>
> The PdfGraphics2D.drawString() method wasn't simulating bold,
> italic or bold-italic when a bold, italic or bold-italic
> specific version of the font was not found.
>
> The PdfGraphics2D.drawGlyphVector() method will produce the
> proper output, but it consumes a lot of memory and produces
> really large pdf files.
>
> The following PdfGraphics2D.drawString() method will simulate
> bold, italic or bold-italic when needed, and it contains the
> code I submitted earlier for horizontally scaled fonts.
>
> Note:
> On my machine the font.getFontName() and font.getName()
> values would be different when the java virtual machine was
> using a bold, italic or bold-italic version of a font, and
> the values were the same when it was simulating bold, italic,
> and bold-italic.
>
> I would prefer if there was some way of determining if itext
> doesn't have a bold, italic or bold-italic version of the
> font, and use that information to trigger the code to
> simulate a bold, italic, or bold-italic font.
>
> /**
> * @(protected) Graphics2D#drawString(String, float, float) */
> public void drawString(String s, float x, float y) {
> if (s.length() == 0)
> return;
> setFillPaint();
> if (onlyShapes) {
>
> drawGlyphVector(this.font.layoutGlyphVector(getFontRenderContext(),
> s.toCharArray(), 0, s.length(),
> java.awt.Font.LAYOUT_LEFT_TO_RIGHT), x, y);
> // Use the following line to compile in JDK 1.3
> //
> drawGlyphVector(this.font.createGlyphVector(getFontRenderConte
> xt(), s), x, y);
> }
> else {
> boolean restoreTextRenderingMode = false;
> AffineTransform at = getTransform();
> AffineTransform at2 = getTransform();
> at2.translate(x, y);
> at2.concatenate(font.getTransform());
> setTransform(at2);
> AffineTransform inverse = this.normalizeMatrix();
> AffineTransform flipper =
> AffineTransform.getScaleInstance(1,-1);
> inverse.concatenate(flipper);
> double[] mx = new double[6];
> inverse.getMatrix(mx);
> cb.beginText();
> cb.setFontAndSize(baseFont, fontSize);
>
> // Check if we need to simulate an italic font.
> // When there are different fonts for italic, bold,
> italic bold
> // the font.getName() will be different from the
> font.getFontName()
> // value. When they are the same value then we are
> normally dealing
> // with a single font that has been made into an
> italic or bold
> // font.
> if (font.isItalic() &&
> font.getFontName().equals(font.getName())) {
> float angle =
> baseFont.getFontDescriptor(baseFont.ITALICANGLE,
> 1000);
> float angle2 = font.getItalicAngle();
>
> // We don't have an italic version of this font so we need
> // to set the font angle ourselves to produce an
> italic font.
> if (angle2 == 0) {
> // The JavaVM didn't have an angle setting for making
> // the font an italic font so use a default of
> // italic angle of 15 degrees.
> angle2 = 15.0f;
> } else {
> // This sign of the angle for Java and PDF seams
> // seams to be reversed.
> angle2 = -angle2;
> }
>
> if (angle == 0) {
> mx[2] = angle2 / 100.0f;
> }
> }
> cb.setTextMatrix((float)mx[0], (float)mx[1], (float)mx[2],
> (float)mx[3], (float)mx[4], (float)mx[5]);
>
>
> // Set the horizontal scaling to match the Java font
> if needed.
> Float hscale = (Float)
> font.getAttributes().get(TextAttribute.WIDTH);
> hscale = (hscale == null) ?
> TextAttribute.WIDTH_REGULAR : hscale;
> cb.setHorizontalScaling(100.0f / hscale);
>
> // Get the weight of the font so we can detect fonts
> with a weight
> // that makes them bold, but the Font.isBold() value is false.
> Float weight = (Float)
> font.getAttributes().get(TextAttribute.WEIGHT);
> if (weight == null) {
> weight = (font.isBold()) ? TextAttribute.WEIGHT_BOLD
> : TextAttribute.WEIGHT_REGULAR;
> }
>
> // Check if we need to simulate a bold font.
> if ((font.isBold() || weight >= TextAttribute.WEIGHT_SEMIBOLD)
> && (font.getFontName().equals(font.getName()))) {
>
> // Simulate a bold font.
> float strokeWidth = font.getSize2D()
> * (weight -
> TextAttribute.WEIGHT_REGULAR)
> / 30f;
>
> if (strokeWidth != 1) {
> cb.setTextRenderingMode(PdfContentByte.
> TEXT_RENDER_MODE_FILL_STROKE);
>
> cb.setLineWidth(strokeWidth);
> cb.setColorStroke(getColor());
> restoreTextRenderingMode = true;
> }
> }
>
> double width = 0;
> if (font.getSize2D() > 0) {
> float scale = 1000 / font.getSize2D();
> width = font.deriveFont(
> AffineTransform.getScaleInstance(scale, scale))
> .getStringBounds(s,
> getFontRenderContext()).getWidth()
> / scale;
> }
> if (s.length() > 1) {
> float adv = ((float)width - baseFont.getWidthPoint(s,
> fontSize))
> / (s.length() - 1);
> cb.setCharacterSpacing(adv);
> }
> cb.showText(s);
> if (s.length() > 1) {
> cb.setCharacterSpacing(0);
> }
>
> // Restore the original TextRenderingMode if needed.
> if (restoreTextRenderingMode) {
>
> cb.setTextRenderingMode(PdfContentByte.TEXT_RENDER_MODE_FILL);
> }
>
> cb.endText();
> setTransform(at);
> if(underline)
> {
> // These two are supposed to be taken from the .AFM file
> //int UnderlinePosition = -100;
> int UnderlineThickness = 50;
> //
> double d = asPoints((double)UnderlineThickness,
> (int)fontSize);
> setStroke(new BasicStroke((float)d));
> y = (float)((double)(y) +
> asPoints((double)(UnderlineThickness), (int)fontSize));
> Line2D line = new Line2D.Double((double)x,
> (double)y, (double)(width+x), (double)y);
> draw(line);
> }
> }
> }
>
>
> --
> John Hellerud
>
>
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