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https://issues.apache.org/jira/browse/PDFBOX-1094?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14109318#comment-14109318
]
Tilman Hausherr commented on PDFBOX-1094:
-----------------------------------------
I'm passing the xform in every toPaint(). The main change is in
TilingPaint.getImage() which looks like this:
{code}
private static BufferedImage getImage(PDFRenderer renderer, PDTilingPattern
pattern,
PDColorSpace colorSpace, PDColor
color, AffineTransform xform) throws IOException
{
ColorSpace outputCS = ColorSpace.getInstance(ColorSpace.CS_sRGB);
ColorModel cm = new ComponentColorModel(outputCS, true, false,
Transparency.TRANSLUCENT, DataBuffer.TYPE_BYTE);
Rectangle2D rect = getTransformedRect(pattern);
int width = Math.round((float) rect.getWidth());
int height = Math.round((float) rect.getHeight());
int rasterWidth = (int) (width * Math.abs(xform.getScaleX()));
int rasterHeight = (int) (height * Math.abs(xform.getScaleY()));
if (rasterWidth < 1)
rasterWidth = 1;
if (rasterHeight < 1)
rasterHeight = 1;
// create raster
WritableRaster raster = cm.createCompatibleWritableRaster(rasterWidth,
rasterHeight);
BufferedImage image = new BufferedImage(cm, raster, false, null);
// TODO the pattern matrix needs to map onto the parent stream's
initial space, not the CTM
// so the transformation below is not correct, because TilingPaint
needs more
// information to perform the transformation correctly, see PDF
32000, p174.
// matrix
Matrix matrix;
if (pattern.getMatrix() == null)
{
// identity
matrix = new Matrix();
}
else
{
// undo translation
matrix = pattern.getMatrix().clone();
matrix.setValue(2, 0, matrix.getValue(2, 0) - (float)rect.getX());
// tx
matrix.setValue(2, 1, matrix.getValue(2, 1) - (float)rect.getY());
// ty
}
// TODO: need to make it easy to use a custom TilingPatternDrawer
PageDrawer drawer = new TilingPatternDrawer(renderer);
PDRectangle pdRect = new PDRectangle(0, 0, width, height);
Graphics2D graphics = image.createGraphics();
graphics.scale(xform.getScaleX(), -xform.getScaleY());
drawer.drawTilingPattern(graphics, pattern, pdRect, matrix, colorSpace,
color);
graphics.dispose();
return image;
}
{code}
> Pattern colorspace support
> --------------------------
>
> Key: PDFBOX-1094
> URL: https://issues.apache.org/jira/browse/PDFBOX-1094
> Project: PDFBox
> Issue Type: Improvement
> Components: Rendering
> Affects Versions: 1.6.0
> Reporter: Andreas Lehmkühler
> Assignee: Andreas Lehmkühler
> Priority: Minor
> Attachments: ColoredTilingPaint.patch, PATTYP1.pdf, PATTYP2.pdf,
> PDF32000_2008_pg737.pdf, PDFBOX-1094-065514-XStep32767.pdf,
> PDFBOX-1094-094730.pdf, PDFBOX-1094-096213-p18.pdf,
> PDFBOX-1861-tracemonkey13.png, PDFStreamEngine.patch, PageDrawer.patch,
> _pdfbox-1094-tiling_pattern.pdf-1-blurry.png, jagpdf_doc_patterns.pdf,
> jagpdf_doc_patterns.pdf-1.png, pdfbox-1094-pdf32000_2008_pg737.pdf-1.png,
> pdfbox-1094-pdf32000_2008_pg737.pdf-1.png,
> pdfbox-1094-tiling_pattern.pdf-1.png, pdfbox-1094-tiling_pattern.pdf-1.png,
> pdfbox-1094-tiling_pattern.pdf-1.png, pdfbox-1861-tracemonkey.pdf-13.png,
> pdfbox-1861-tracemonkey.pdf-13.png, tiling_pattern.pdf
>
>
> PDFBox doesn't support PDPattern colorspaces
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