There seems to be a problem rendering PDF's using CMYK colors (see bug
14526). Attached is a patch that should repair this problem.
Troy Henderson
diff -aur clean/poppler-0.6.1/poppler/GfxState.cc unclean/poppler-0.6.1/poppler/GfxState.cc
--- clean/poppler-0.6.1/poppler/GfxState.cc 2007-09-17 13:37:39.000000000 -0500
+++ unclean/poppler-0.6.1/poppler/GfxState.cc 2008-02-16 20:25:30.000000000 -0600
@@ -618,65 +618,18 @@
}
void GfxDeviceCMYKColorSpace::getRGB(GfxColor *color, GfxRGB *rgb) {
- double c, m, y, k, c1, m1, y1, k1, r, g, b, x;
-
- c = colToDbl(color->c[0]);
- m = colToDbl(color->c[1]);
- y = colToDbl(color->c[2]);
- k = colToDbl(color->c[3]);
- c1 = 1 - c;
- m1 = 1 - m;
- y1 = 1 - y;
- k1 = 1 - k;
- // this is a matrix multiplication, unrolled for performance
- // C M Y K
- x = c1 * m1 * y1 * k1; // 0 0 0 0
- r = g = b = x;
- x = c1 * m1 * y1 * k; // 0 0 0 1
- r += 0.1373 * x;
- g += 0.1216 * x;
- b += 0.1255 * x;
- x = c1 * m1 * y * k1; // 0 0 1 0
- r += x;
- g += 0.9490 * x;
- x = c1 * m1 * y * k; // 0 0 1 1
- r += 0.1098 * x;
- g += 0.1020 * x;
- x = c1 * m * y1 * k1; // 0 1 0 0
- r += 0.9255 * x;
- b += 0.5490 * x;
- x = c1 * m * y1 * k; // 0 1 0 1
- r += 0.1412 * x;
- x = c1 * m * y * k1; // 0 1 1 0
- r += 0.9294 * x;
- g += 0.1098 * x;
- b += 0.1412 * x;
- x = c1 * m * y * k; // 0 1 1 1
- r += 0.1333 * x;
- x = c * m1 * y1 * k1; // 1 0 0 0
- g += 0.6784 * x;
- b += 0.9373 * x;
- x = c * m1 * y1 * k; // 1 0 0 1
- g += 0.0588 * x;
- b += 0.1412 * x;
- x = c * m1 * y * k1; // 1 0 1 0
- g += 0.6510 * x;
- b += 0.3137 * x;
- x = c * m1 * y * k; // 1 0 1 1
- g += 0.0745 * x;
- x = c * m * y1 * k1; // 1 1 0 0
- r += 0.1804 * x;
- g += 0.1922 * x;
- b += 0.5725 * x;
- x = c * m * y1 * k; // 1 1 0 1
- b += 0.0078 * x;
- x = c * m * y * k1; // 1 1 1 0
- r += 0.2118 * x;
- g += 0.2119 * x;
- b += 0.2235 * x;
- rgb->r = clip01(dblToCol(r));
- rgb->g = clip01(dblToCol(g));
- rgb->b = clip01(dblToCol(b));
+ double c, m, y, k, r, g, b;
+
+ c = colToDbl(color->c[0]);
+ m = colToDbl(color->c[1]);
+ y = colToDbl(color->c[2]);
+ k = colToDbl(color->c[3]);
+ r = (c+k<1.0) ? 1.0 - c - k : 0.0;
+ g = (m+k<1.0) ? 1.0 - m - k : 0.0;
+ b = (y+k<1.0) ? 1.0 - y - k : 0.0;
+ rgb->r = clip01(dblToCol(r));
+ rgb->g = clip01(dblToCol(g));
+ rgb->b = clip01(dblToCol(b));
}
void GfxDeviceCMYKColorSpace::getCMYK(GfxColor *color, GfxCMYK *cmyk) {
_______________________________________________
poppler mailing list
[email protected]
http://lists.freedesktop.org/mailman/listinfo/poppler
