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-rw-r--r--kpdf/xpdf/xpdf/GfxState.cc4137
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diff --git a/kpdf/xpdf/xpdf/GfxState.cc b/kpdf/xpdf/xpdf/GfxState.cc
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-//========================================================================
-//
-// GfxState.cc
-//
-// Copyright 1996-2003 Glyph & Cog, LLC
-//
-//========================================================================
-
-#include <aconf.h>
-
-#ifdef USE_GCC_PRAGMAS
-#pragma implementation
-#endif
-
-#include <stddef.h>
-#include <math.h>
-#include <string.h>
-#include "gmem.h"
-#include "Error.h"
-#include "Object.h"
-#include "Array.h"
-#include "Page.h"
-#include "GfxState.h"
-
-//------------------------------------------------------------------------
-
-static inline GfxColorComp clip01(GfxColorComp x) {
- return (x < 0) ? 0 : (x > gfxColorComp1) ? gfxColorComp1 : x;
-}
-
-static inline double clip01(double x) {
- return (x < 0) ? 0 : (x > 1) ? 1 : x;
-}
-
-//------------------------------------------------------------------------
-
-struct GfxBlendModeInfo {
- char *name;
- GfxBlendMode mode;
-};
-
-static GfxBlendModeInfo gfxBlendModeNames[] = {
- { "Normal", gfxBlendNormal },
- { "Compatible", gfxBlendNormal },
- { "Multiply", gfxBlendMultiply },
- { "Screen", gfxBlendScreen },
- { "Overlay", gfxBlendOverlay },
- { "Darken", gfxBlendDarken },
- { "Lighten", gfxBlendLighten },
- { "ColorDodge", gfxBlendColorDodge },
- { "ColorBurn", gfxBlendColorBurn },
- { "HardLight", gfxBlendHardLight },
- { "SoftLight", gfxBlendSoftLight },
- { "Difference", gfxBlendDifference },
- { "Exclusion", gfxBlendExclusion },
- { "Hue", gfxBlendHue },
- { "Saturation", gfxBlendSaturation },
- { "Color", gfxBlendColor },
- { "Luminosity", gfxBlendLuminosity }
-};
-
-#define nGfxBlendModeNames \
- ((int)((sizeof(gfxBlendModeNames) / sizeof(GfxBlendModeInfo))))
-
-//------------------------------------------------------------------------
-
-// NB: This must match the GfxColorSpaceMode enum defined in
-// GfxState.h
-static char *gfxColorSpaceModeNames[] = {
- "DeviceGray",
- "CalGray",
- "DeviceRGB",
- "CalRGB",
- "DeviceCMYK",
- "Lab",
- "ICCBased",
- "Indexed",
- "Separation",
- "DeviceN",
- "Pattern"
-};
-
-#define nGfxColorSpaceModes ((sizeof(gfxColorSpaceModeNames) / sizeof(char *)))
-
-//------------------------------------------------------------------------
-// GfxColorSpace
-//------------------------------------------------------------------------
-
-GfxColorSpace::GfxColorSpace() {
-}
-
-GfxColorSpace::~GfxColorSpace() {
-}
-
-GfxColorSpace *GfxColorSpace::parse(Object *csObj) {
- GfxColorSpace *cs;
- Object obj1;
-
- cs = NULL;
- if (csObj->isName()) {
- if (csObj->isName("DeviceGray") || csObj->isName("G")) {
- cs = new GfxDeviceGrayColorSpace();
- } else if (csObj->isName("DeviceRGB") || csObj->isName("RGB")) {
- cs = new GfxDeviceRGBColorSpace();
- } else if (csObj->isName("DeviceCMYK") || csObj->isName("CMYK")) {
- cs = new GfxDeviceCMYKColorSpace();
- } else if (csObj->isName("Pattern")) {
- cs = new GfxPatternColorSpace(NULL);
- } else {
- error(-1, "Bad color space '%s'", csObj->getName());
- }
- } else if (csObj->isArray()) {
- csObj->arrayGet(0, &obj1);
- if (obj1.isName("DeviceGray") || obj1.isName("G")) {
- cs = new GfxDeviceGrayColorSpace();
- } else if (obj1.isName("DeviceRGB") || obj1.isName("RGB")) {
- cs = new GfxDeviceRGBColorSpace();
- } else if (obj1.isName("DeviceCMYK") || obj1.isName("CMYK")) {
- cs = new GfxDeviceCMYKColorSpace();
- } else if (obj1.isName("CalGray")) {
- cs = GfxCalGrayColorSpace::parse(csObj->getArray());
- } else if (obj1.isName("CalRGB")) {
- cs = GfxCalRGBColorSpace::parse(csObj->getArray());
- } else if (obj1.isName("Lab")) {
- cs = GfxLabColorSpace::parse(csObj->getArray());
- } else if (obj1.isName("ICCBased")) {
- cs = GfxICCBasedColorSpace::parse(csObj->getArray());
- } else if (obj1.isName("Indexed") || obj1.isName("I")) {
- cs = GfxIndexedColorSpace::parse(csObj->getArray());
- } else if (obj1.isName("Separation")) {
- cs = GfxSeparationColorSpace::parse(csObj->getArray());
- } else if (obj1.isName("DeviceN")) {
- cs = GfxDeviceNColorSpace::parse(csObj->getArray());
- } else if (obj1.isName("Pattern")) {
- cs = GfxPatternColorSpace::parse(csObj->getArray());
- } else {
- error(-1, "Bad color space");
- }
- obj1.free();
- } else {
- error(-1, "Bad color space - expected name or array");
- }
- return cs;
-}
-
-void GfxColorSpace::getDefaultRanges(double *decodeLow, double *decodeRange,
- int /*maxImgPixel*/) {
- int i;
-
- for (i = 0; i < getNComps(); ++i) {
- decodeLow[i] = 0;
- decodeRange[i] = 1;
- }
-}
-
-int GfxColorSpace::getNumColorSpaceModes() {
- return nGfxColorSpaceModes;
-}
-
-char *GfxColorSpace::getColorSpaceModeName(int idx) {
- return gfxColorSpaceModeNames[idx];
-}
-
-//------------------------------------------------------------------------
-// GfxDeviceGrayColorSpace
-//------------------------------------------------------------------------
-
-GfxDeviceGrayColorSpace::GfxDeviceGrayColorSpace() {
-}
-
-GfxDeviceGrayColorSpace::~GfxDeviceGrayColorSpace() {
-}
-
-GfxColorSpace *GfxDeviceGrayColorSpace::copy() {
- return new GfxDeviceGrayColorSpace();
-}
-
-void GfxDeviceGrayColorSpace::getGray(GfxColor *color, GfxGray *gray) {
- *gray = clip01(color->c[0]);
-}
-
-void GfxDeviceGrayColorSpace::getRGB(GfxColor *color, GfxRGB *rgb) {
- rgb->r = rgb->g = rgb->b = clip01(color->c[0]);
-}
-
-void GfxDeviceGrayColorSpace::getCMYK(GfxColor *color, GfxCMYK *cmyk) {
- cmyk->c = cmyk->m = cmyk->y = 0;
- cmyk->k = clip01(gfxColorComp1 - color->c[0]);
-}
-
-void GfxDeviceGrayColorSpace::getDefaultColor(GfxColor *color) {
- color->c[0] = 0;
-}
-
-//------------------------------------------------------------------------
-// GfxCalGrayColorSpace
-//------------------------------------------------------------------------
-
-GfxCalGrayColorSpace::GfxCalGrayColorSpace() {
- whiteX = whiteY = whiteZ = 1;
- blackX = blackY = blackZ = 0;
- gamma = 1;
-}
-
-GfxCalGrayColorSpace::~GfxCalGrayColorSpace() {
-}
-
-GfxColorSpace *GfxCalGrayColorSpace::copy() {
- GfxCalGrayColorSpace *cs;
-
- cs = new GfxCalGrayColorSpace();
- cs->whiteX = whiteX;
- cs->whiteY = whiteY;
- cs->whiteZ = whiteZ;
- cs->blackX = blackX;
- cs->blackY = blackY;
- cs->blackZ = blackZ;
- cs->gamma = gamma;
- return cs;
-}
-
-GfxColorSpace *GfxCalGrayColorSpace::parse(Array *arr) {
- GfxCalGrayColorSpace *cs;
- Object obj1, obj2, obj3;
-
- arr->get(1, &obj1);
- if (!obj1.isDict()) {
- error(-1, "Bad CalGray color space");
- obj1.free();
- return NULL;
- }
- cs = new GfxCalGrayColorSpace();
- if (obj1.dictLookup("WhitePoint", &obj2)->isArray() &&
- obj2.arrayGetLength() == 3) {
- obj2.arrayGet(0, &obj3);
- cs->whiteX = obj3.getNum();
- obj3.free();
- obj2.arrayGet(1, &obj3);
- cs->whiteY = obj3.getNum();
- obj3.free();
- obj2.arrayGet(2, &obj3);
- cs->whiteZ = obj3.getNum();
- obj3.free();
- }
- obj2.free();
- if (obj1.dictLookup("BlackPoint", &obj2)->isArray() &&
- obj2.arrayGetLength() == 3) {
- obj2.arrayGet(0, &obj3);
- cs->blackX = obj3.getNum();
- obj3.free();
- obj2.arrayGet(1, &obj3);
- cs->blackY = obj3.getNum();
- obj3.free();
- obj2.arrayGet(2, &obj3);
- cs->blackZ = obj3.getNum();
- obj3.free();
- }
- obj2.free();
- if (obj1.dictLookup("Gamma", &obj2)->isNum()) {
- cs->gamma = obj2.getNum();
- }
- obj2.free();
- obj1.free();
- return cs;
-}
-
-void GfxCalGrayColorSpace::getGray(GfxColor *color, GfxGray *gray) {
- *gray = clip01(color->c[0]);
-}
-
-void GfxCalGrayColorSpace::getRGB(GfxColor *color, GfxRGB *rgb) {
- rgb->r = rgb->g = rgb->b = clip01(color->c[0]);
-}
-
-void GfxCalGrayColorSpace::getCMYK(GfxColor *color, GfxCMYK *cmyk) {
- cmyk->c = cmyk->m = cmyk->y = 0;
- cmyk->k = clip01(gfxColorComp1 - color->c[0]);
-}
-
-void GfxCalGrayColorSpace::getDefaultColor(GfxColor *color) {
- color->c[0] = 0;
-}
-
-//------------------------------------------------------------------------
-// GfxDeviceRGBColorSpace
-//------------------------------------------------------------------------
-
-GfxDeviceRGBColorSpace::GfxDeviceRGBColorSpace() {
-}
-
-GfxDeviceRGBColorSpace::~GfxDeviceRGBColorSpace() {
-}
-
-GfxColorSpace *GfxDeviceRGBColorSpace::copy() {
- return new GfxDeviceRGBColorSpace();
-}
-
-void GfxDeviceRGBColorSpace::getGray(GfxColor *color, GfxGray *gray) {
- *gray = clip01((GfxColorComp)(0.3 * color->c[0] +
- 0.59 * color->c[1] +
- 0.11 * color->c[2] + 0.5));
-}
-
-void GfxDeviceRGBColorSpace::getRGB(GfxColor *color, GfxRGB *rgb) {
- rgb->r = clip01(color->c[0]);
- rgb->g = clip01(color->c[1]);
- rgb->b = clip01(color->c[2]);
-}
-
-void GfxDeviceRGBColorSpace::getCMYK(GfxColor *color, GfxCMYK *cmyk) {
- GfxColorComp c, m, y, k;
-
- c = clip01(gfxColorComp1 - color->c[0]);
- m = clip01(gfxColorComp1 - color->c[1]);
- y = clip01(gfxColorComp1 - color->c[2]);
- k = c;
- if (m < k) {
- k = m;
- }
- if (y < k) {
- k = y;
- }
- cmyk->c = c - k;
- cmyk->m = m - k;
- cmyk->y = y - k;
- cmyk->k = k;
-}
-
-void GfxDeviceRGBColorSpace::getDefaultColor(GfxColor *color) {
- color->c[0] = 0;
- color->c[1] = 0;
- color->c[2] = 0;
-}
-
-//------------------------------------------------------------------------
-// GfxCalRGBColorSpace
-//------------------------------------------------------------------------
-
-GfxCalRGBColorSpace::GfxCalRGBColorSpace() {
- whiteX = whiteY = whiteZ = 1;
- blackX = blackY = blackZ = 0;
- gammaR = gammaG = gammaB = 1;
- mat[0] = 1; mat[1] = 0; mat[2] = 0;
- mat[3] = 0; mat[4] = 1; mat[5] = 0;
- mat[6] = 0; mat[7] = 0; mat[8] = 1;
-}
-
-GfxCalRGBColorSpace::~GfxCalRGBColorSpace() {
-}
-
-GfxColorSpace *GfxCalRGBColorSpace::copy() {
- GfxCalRGBColorSpace *cs;
- int i;
-
- cs = new GfxCalRGBColorSpace();
- cs->whiteX = whiteX;
- cs->whiteY = whiteY;
- cs->whiteZ = whiteZ;
- cs->blackX = blackX;
- cs->blackY = blackY;
- cs->blackZ = blackZ;
- cs->gammaR = gammaR;
- cs->gammaG = gammaG;
- cs->gammaB = gammaB;
- for (i = 0; i < 9; ++i) {
- cs->mat[i] = mat[i];
- }
- return cs;
-}
-
-GfxColorSpace *GfxCalRGBColorSpace::parse(Array *arr) {
- GfxCalRGBColorSpace *cs;
- Object obj1, obj2, obj3;
- int i;
-
- arr->get(1, &obj1);
- if (!obj1.isDict()) {
- error(-1, "Bad CalRGB color space");
- obj1.free();
- return NULL;
- }
- cs = new GfxCalRGBColorSpace();
- if (obj1.dictLookup("WhitePoint", &obj2)->isArray() &&
- obj2.arrayGetLength() == 3) {
- obj2.arrayGet(0, &obj3);
- cs->whiteX = obj3.getNum();
- obj3.free();
- obj2.arrayGet(1, &obj3);
- cs->whiteY = obj3.getNum();
- obj3.free();
- obj2.arrayGet(2, &obj3);
- cs->whiteZ = obj3.getNum();
- obj3.free();
- }
- obj2.free();
- if (obj1.dictLookup("BlackPoint", &obj2)->isArray() &&
- obj2.arrayGetLength() == 3) {
- obj2.arrayGet(0, &obj3);
- cs->blackX = obj3.getNum();
- obj3.free();
- obj2.arrayGet(1, &obj3);
- cs->blackY = obj3.getNum();
- obj3.free();
- obj2.arrayGet(2, &obj3);
- cs->blackZ = obj3.getNum();
- obj3.free();
- }
- obj2.free();
- if (obj1.dictLookup("Gamma", &obj2)->isArray() &&
- obj2.arrayGetLength() == 3) {
- obj2.arrayGet(0, &obj3);
- cs->gammaR = obj3.getNum();
- obj3.free();
- obj2.arrayGet(1, &obj3);
- cs->gammaG = obj3.getNum();
- obj3.free();
- obj2.arrayGet(2, &obj3);
- cs->gammaB = obj3.getNum();
- obj3.free();
- }
- obj2.free();
- if (obj1.dictLookup("Matrix", &obj2)->isArray() &&
- obj2.arrayGetLength() == 9) {
- for (i = 0; i < 9; ++i) {
- obj2.arrayGet(i, &obj3);
- cs->mat[i] = obj3.getNum();
- obj3.free();
- }
- }
- obj2.free();
- obj1.free();
- return cs;
-}
-
-void GfxCalRGBColorSpace::getGray(GfxColor *color, GfxGray *gray) {
- *gray = clip01((GfxColorComp)(0.299 * color->c[0] +
- 0.587 * color->c[1] +
- 0.114 * color->c[2] + 0.5));
-}
-
-void GfxCalRGBColorSpace::getRGB(GfxColor *color, GfxRGB *rgb) {
- rgb->r = clip01(color->c[0]);
- rgb->g = clip01(color->c[1]);
- rgb->b = clip01(color->c[2]);
-}
-
-void GfxCalRGBColorSpace::getCMYK(GfxColor *color, GfxCMYK *cmyk) {
- GfxColorComp c, m, y, k;
-
- c = clip01(gfxColorComp1 - color->c[0]);
- m = clip01(gfxColorComp1 - color->c[1]);
- y = clip01(gfxColorComp1 - color->c[2]);
- k = c;
- if (m < k) {
- k = m;
- }
- if (y < k) {
- k = y;
- }
- cmyk->c = c - k;
- cmyk->m = m - k;
- cmyk->y = y - k;
- cmyk->k = k;
-}
-
-void GfxCalRGBColorSpace::getDefaultColor(GfxColor *color) {
- color->c[0] = 0;
- color->c[1] = 0;
- color->c[2] = 0;
-}
-
-//------------------------------------------------------------------------
-// GfxDeviceCMYKColorSpace
-//------------------------------------------------------------------------
-
-GfxDeviceCMYKColorSpace::GfxDeviceCMYKColorSpace() {
-}
-
-GfxDeviceCMYKColorSpace::~GfxDeviceCMYKColorSpace() {
-}
-
-GfxColorSpace *GfxDeviceCMYKColorSpace::copy() {
- return new GfxDeviceCMYKColorSpace();
-}
-
-void GfxDeviceCMYKColorSpace::getGray(GfxColor *color, GfxGray *gray) {
- *gray = clip01((GfxColorComp)(gfxColorComp1 - color->c[3]
- - 0.3 * color->c[0]
- - 0.59 * color->c[1]
- - 0.11 * color->c[2] + 0.5));
-}
-
-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));
-}
-
-void GfxDeviceCMYKColorSpace::getCMYK(GfxColor *color, GfxCMYK *cmyk) {
- cmyk->c = clip01(color->c[0]);
- cmyk->m = clip01(color->c[1]);
- cmyk->y = clip01(color->c[2]);
- cmyk->k = clip01(color->c[3]);
-}
-
-void GfxDeviceCMYKColorSpace::getDefaultColor(GfxColor *color) {
- color->c[0] = 0;
- color->c[1] = 0;
- color->c[2] = 0;
- color->c[3] = gfxColorComp1;
-}
-
-//------------------------------------------------------------------------
-// GfxLabColorSpace
-//------------------------------------------------------------------------
-
-// This is the inverse of MatrixLMN in Example 4.10 from the PostScript
-// Language Reference, Third Edition.
-static double xyzrgb[3][3] = {
- { 3.240449, -1.537136, -0.498531 },
- { -0.969265, 1.876011, 0.041556 },
- { 0.055643, -0.204026, 1.057229 }
-};
-
-GfxLabColorSpace::GfxLabColorSpace() {
- whiteX = whiteY = whiteZ = 1;
- blackX = blackY = blackZ = 0;
- aMin = bMin = -100;
- aMax = bMax = 100;
-}
-
-GfxLabColorSpace::~GfxLabColorSpace() {
-}
-
-GfxColorSpace *GfxLabColorSpace::copy() {
- GfxLabColorSpace *cs;
-
- cs = new GfxLabColorSpace();
- cs->whiteX = whiteX;
- cs->whiteY = whiteY;
- cs->whiteZ = whiteZ;
- cs->blackX = blackX;
- cs->blackY = blackY;
- cs->blackZ = blackZ;
- cs->aMin = aMin;
- cs->aMax = aMax;
- cs->bMin = bMin;
- cs->bMax = bMax;
- cs->kr = kr;
- cs->kg = kg;
- cs->kb = kb;
- return cs;
-}
-
-GfxColorSpace *GfxLabColorSpace::parse(Array *arr) {
- GfxLabColorSpace *cs;
- Object obj1, obj2, obj3;
-
- arr->get(1, &obj1);
- if (!obj1.isDict()) {
- error(-1, "Bad Lab color space");
- obj1.free();
- return NULL;
- }
- cs = new GfxLabColorSpace();
- if (obj1.dictLookup("WhitePoint", &obj2)->isArray() &&
- obj2.arrayGetLength() == 3) {
- obj2.arrayGet(0, &obj3);
- cs->whiteX = obj3.getNum();
- obj3.free();
- obj2.arrayGet(1, &obj3);
- cs->whiteY = obj3.getNum();
- obj3.free();
- obj2.arrayGet(2, &obj3);
- cs->whiteZ = obj3.getNum();
- obj3.free();
- }
- obj2.free();
- if (obj1.dictLookup("BlackPoint", &obj2)->isArray() &&
- obj2.arrayGetLength() == 3) {
- obj2.arrayGet(0, &obj3);
- cs->blackX = obj3.getNum();
- obj3.free();
- obj2.arrayGet(1, &obj3);
- cs->blackY = obj3.getNum();
- obj3.free();
- obj2.arrayGet(2, &obj3);
- cs->blackZ = obj3.getNum();
- obj3.free();
- }
- obj2.free();
- if (obj1.dictLookup("Range", &obj2)->isArray() &&
- obj2.arrayGetLength() == 4) {
- obj2.arrayGet(0, &obj3);
- cs->aMin = obj3.getNum();
- obj3.free();
- obj2.arrayGet(1, &obj3);
- cs->aMax = obj3.getNum();
- obj3.free();
- obj2.arrayGet(2, &obj3);
- cs->bMin = obj3.getNum();
- obj3.free();
- obj2.arrayGet(3, &obj3);
- cs->bMax = obj3.getNum();
- obj3.free();
- }
- obj2.free();
- obj1.free();
-
- cs->kr = 1 / (xyzrgb[0][0] * cs->whiteX +
- xyzrgb[0][1] * cs->whiteY +
- xyzrgb[0][2] * cs->whiteZ);
- cs->kg = 1 / (xyzrgb[1][0] * cs->whiteX +
- xyzrgb[1][1] * cs->whiteY +
- xyzrgb[1][2] * cs->whiteZ);
- cs->kb = 1 / (xyzrgb[2][0] * cs->whiteX +
- xyzrgb[2][1] * cs->whiteY +
- xyzrgb[2][2] * cs->whiteZ);
-
- return cs;
-}
-
-void GfxLabColorSpace::getGray(GfxColor *color, GfxGray *gray) {
- GfxRGB rgb;
-
- getRGB(color, &rgb);
- *gray = clip01((GfxColorComp)(0.299 * rgb.r +
- 0.587 * rgb.g +
- 0.114 * rgb.b + 0.5));
-}
-
-void GfxLabColorSpace::getRGB(GfxColor *color, GfxRGB *rgb) {
- double X, Y, Z;
- double t1, t2;
- double r, g, b;
-
- // convert L*a*b* to CIE 1931 XYZ color space
- t1 = (colToDbl(color->c[0]) + 16) / 116;
- t2 = t1 + colToDbl(color->c[1]) / 500;
- if (t2 >= (6.0 / 29.0)) {
- X = t2 * t2 * t2;
- } else {
- X = (108.0 / 841.0) * (t2 - (4.0 / 29.0));
- }
- X *= whiteX;
- if (t1 >= (6.0 / 29.0)) {
- Y = t1 * t1 * t1;
- } else {
- Y = (108.0 / 841.0) * (t1 - (4.0 / 29.0));
- }
- Y *= whiteY;
- t2 = t1 - colToDbl(color->c[2]) / 200;
- if (t2 >= (6.0 / 29.0)) {
- Z = t2 * t2 * t2;
- } else {
- Z = (108.0 / 841.0) * (t2 - (4.0 / 29.0));
- }
- Z *= whiteZ;
-
- // convert XYZ to RGB, including gamut mapping and gamma correction
- r = xyzrgb[0][0] * X + xyzrgb[0][1] * Y + xyzrgb[0][2] * Z;
- g = xyzrgb[1][0] * X + xyzrgb[1][1] * Y + xyzrgb[1][2] * Z;
- b = xyzrgb[2][0] * X + xyzrgb[2][1] * Y + xyzrgb[2][2] * Z;
- rgb->r = dblToCol(pow(clip01(r * kr), 0.5));
- rgb->g = dblToCol(pow(clip01(g * kg), 0.5));
- rgb->b = dblToCol(pow(clip01(b * kb), 0.5));
-}
-
-void GfxLabColorSpace::getCMYK(GfxColor *color, GfxCMYK *cmyk) {
- GfxRGB rgb;
- GfxColorComp c, m, y, k;
-
- getRGB(color, &rgb);
- c = clip01(gfxColorComp1 - rgb.r);
- m = clip01(gfxColorComp1 - rgb.g);
- y = clip01(gfxColorComp1 - rgb.b);
- k = c;
- if (m < k) {
- k = m;
- }
- if (y < k) {
- k = y;
- }
- cmyk->c = c - k;
- cmyk->m = m - k;
- cmyk->y = y - k;
- cmyk->k = k;
-}
-
-void GfxLabColorSpace::getDefaultColor(GfxColor *color) {
- color->c[0] = 0;
- if (aMin > 0) {
- color->c[1] = dblToCol(aMin);
- } else if (aMax < 0) {
- color->c[1] = dblToCol(aMax);
- } else {
- color->c[1] = 0;
- }
- if (bMin > 0) {
- color->c[2] = dblToCol(bMin);
- } else if (bMax < 0) {
- color->c[2] = dblToCol(bMax);
- } else {
- color->c[2] = 0;
- }
-}
-
-void GfxLabColorSpace::getDefaultRanges(double *decodeLow, double *decodeRange,
- int /*maxImgPixel*/) {
- decodeLow[0] = 0;
- decodeRange[0] = 100;
- decodeLow[1] = aMin;
- decodeRange[1] = aMax - aMin;
- decodeLow[2] = bMin;
- decodeRange[2] = bMax - bMin;
-}
-
-//------------------------------------------------------------------------
-// GfxICCBasedColorSpace
-//------------------------------------------------------------------------
-
-GfxICCBasedColorSpace::GfxICCBasedColorSpace(int nCompsA, GfxColorSpace *altA,
- Ref *iccProfileStreamA) {
- nComps = nCompsA;
- alt = altA;
- iccProfileStream = *iccProfileStreamA;
- rangeMin[0] = rangeMin[1] = rangeMin[2] = rangeMin[3] = 0;
- rangeMax[0] = rangeMax[1] = rangeMax[2] = rangeMax[3] = 1;
-}
-
-GfxICCBasedColorSpace::~GfxICCBasedColorSpace() {
- delete alt;
-}
-
-GfxColorSpace *GfxICCBasedColorSpace::copy() {
- GfxICCBasedColorSpace *cs;
- int i;
-
- cs = new GfxICCBasedColorSpace(nComps, alt->copy(), &iccProfileStream);
- for (i = 0; i < 4; ++i) {
- cs->rangeMin[i] = rangeMin[i];
- cs->rangeMax[i] = rangeMax[i];
- }
- return cs;
-}
-
-GfxColorSpace *GfxICCBasedColorSpace::parse(Array *arr) {
- GfxICCBasedColorSpace *cs;
- Ref iccProfileStreamA;
- int nCompsA;
- GfxColorSpace *altA;
- Dict *dict;
- Object obj1, obj2, obj3;
- int i;
-
- arr->getNF(1, &obj1);
- if (obj1.isRef()) {
- iccProfileStreamA = obj1.getRef();
- } else {
- iccProfileStreamA.num = 0;
- iccProfileStreamA.gen = 0;
- }
- obj1.free();
- arr->get(1, &obj1);
- if (!obj1.isStream()) {
- error(-1, "Bad ICCBased color space (stream)");
- obj1.free();
- return NULL;
- }
- dict = obj1.streamGetDict();
- if (!dict->lookup("N", &obj2)->isInt()) {
- error(-1, "Bad ICCBased color space (N)");
- obj2.free();
- obj1.free();
- return NULL;
- }
- nCompsA = obj2.getInt();
- obj2.free();
- if (nCompsA > gfxColorMaxComps) {
- error(-1, "ICCBased color space with too many (%d > %d) components",
- nCompsA, gfxColorMaxComps);
- nCompsA = gfxColorMaxComps;
- }
- if (dict->lookup("Alternate", &obj2)->isNull() ||
- !(altA = GfxColorSpace::parse(&obj2))) {
- switch (nCompsA) {
- case 1:
- altA = new GfxDeviceGrayColorSpace();
- break;
- case 3:
- altA = new GfxDeviceRGBColorSpace();
- break;
- case 4:
- altA = new GfxDeviceCMYKColorSpace();
- break;
- default:
- error(-1, "Bad ICCBased color space - invalid N");
- obj2.free();
- obj1.free();
- return NULL;
- }
- }
- obj2.free();
- cs = new GfxICCBasedColorSpace(nCompsA, altA, &iccProfileStreamA);
- if (dict->lookup("Range", &obj2)->isArray() &&
- obj2.arrayGetLength() == 2 * nCompsA) {
- for (i = 0; i < nCompsA; ++i) {
- obj2.arrayGet(2*i, &obj3);
- cs->rangeMin[i] = obj3.getNum();
- obj3.free();
- obj2.arrayGet(2*i+1, &obj3);
- cs->rangeMax[i] = obj3.getNum();
- obj3.free();
- }
- }
- obj2.free();
- obj1.free();
- return cs;
-}
-
-void GfxICCBasedColorSpace::getGray(GfxColor *color, GfxGray *gray) {
- alt->getGray(color, gray);
-}
-
-void GfxICCBasedColorSpace::getRGB(GfxColor *color, GfxRGB *rgb) {
- alt->getRGB(color, rgb);
-}
-
-void GfxICCBasedColorSpace::getCMYK(GfxColor *color, GfxCMYK *cmyk) {
- alt->getCMYK(color, cmyk);
-}
-
-void GfxICCBasedColorSpace::getDefaultColor(GfxColor *color) {
- int i;
-
- for (i = 0; i < nComps; ++i) {
- if (rangeMin[i] > 0) {
- color->c[i] = dblToCol(rangeMin[i]);
- } else if (rangeMax[i] < 0) {
- color->c[i] = dblToCol(rangeMax[i]);
- } else {
- color->c[i] = 0;
- }
- }
-}
-
-void GfxICCBasedColorSpace::getDefaultRanges(double *decodeLow,
- double *decodeRange,
- int maxImgPixel) {
- alt->getDefaultRanges(decodeLow, decodeRange, maxImgPixel);
-
-#if 0
- // this is nominally correct, but some PDF files don't set the
- // correct ranges in the ICCBased dict
- int i;
-
- for (i = 0; i < nComps; ++i) {
- decodeLow[i] = rangeMin[i];
- decodeRange[i] = rangeMax[i] - rangeMin[i];
- }
-#endif
-}
-
-//------------------------------------------------------------------------
-// GfxIndexedColorSpace
-//------------------------------------------------------------------------
-
-GfxIndexedColorSpace::GfxIndexedColorSpace(GfxColorSpace *baseA,
- int indexHighA) {
- base = baseA;
- indexHigh = indexHighA;
- lookup = (Guchar *)gmallocn((indexHigh + 1) * base->getNComps(),
- sizeof(Guchar));
-}
-
-GfxIndexedColorSpace::~GfxIndexedColorSpace() {
- delete base;
- gfree(lookup);
-}
-
-GfxColorSpace *GfxIndexedColorSpace::copy() {
- GfxIndexedColorSpace *cs;
-
- cs = new GfxIndexedColorSpace(base->copy(), indexHigh);
- memcpy(cs->lookup, lookup,
- (indexHigh + 1) * base->getNComps() * sizeof(Guchar));
- return cs;
-}
-
-GfxColorSpace *GfxIndexedColorSpace::parse(Array *arr) {
- GfxIndexedColorSpace *cs;
- GfxColorSpace *baseA;
- int indexHighA;
- Object obj1;
- int x;
- char *s;
- int n, i, j;
-
- if (arr->getLength() != 4) {
- error(-1, "Bad Indexed color space");
- goto err1;
- }
- arr->get(1, &obj1);
- if (!(baseA = GfxColorSpace::parse(&obj1))) {
- error(-1, "Bad Indexed color space (base color space)");
- goto err2;
- }
- obj1.free();
- if (!arr->get(2, &obj1)->isInt()) {
- error(-1, "Bad Indexed color space (hival)");
- delete baseA;
- goto err2;
- }
- indexHighA = obj1.getInt();
- if (indexHighA < 0 || indexHighA > 255) {
- // the PDF spec requires indexHigh to be in [0,255] -- allowing
- // values larger than 255 creates a security hole: if nComps *
- // indexHigh is greater than 2^31, the loop below may overwrite
- // past the end of the array
- error(-1, "Bad Indexed color space (invalid indexHigh value)");
- delete baseA;
- goto err2;
- }
- obj1.free();
- cs = new GfxIndexedColorSpace(baseA, indexHighA);
- arr->get(3, &obj1);
- n = baseA->getNComps();
- if (obj1.isStream()) {
- obj1.streamReset();
- for (i = 0; i <= indexHighA; ++i) {
- for (j = 0; j < n; ++j) {
- if ((x = obj1.streamGetChar()) == EOF) {
- error(-1, "Bad Indexed color space (lookup table stream too short)");
- goto err3;
- }
- cs->lookup[i*n + j] = (Guchar)x;
- }
- }
- obj1.streamClose();
- } else if (obj1.isString()) {
- if (obj1.getString()->getLength() < (indexHighA + 1) * n) {
- error(-1, "Bad Indexed color space (lookup table string too short)");
- goto err3;
- }
- s = obj1.getString()->getCString();
- for (i = 0; i <= indexHighA; ++i) {
- for (j = 0; j < n; ++j) {
- cs->lookup[i*n + j] = (Guchar)*s++;
- }
- }
- } else {
- error(-1, "Bad Indexed color space (lookup table)");
- goto err3;
- }
- obj1.free();
- return cs;
-
- err3:
- delete cs;
- err2:
- obj1.free();
- err1:
- return NULL;
-}
-
-GfxColor *GfxIndexedColorSpace::mapColorToBase(GfxColor *color,
- GfxColor *baseColor) {
- Guchar *p;
- double low[gfxColorMaxComps], range[gfxColorMaxComps];
- int n, i;
-
- n = base->getNComps();
- base->getDefaultRanges(low, range, indexHigh);
- p = &lookup[(int)(colToDbl(color->c[0]) + 0.5) * n];
- for (i = 0; i < n; ++i) {
- baseColor->c[i] = dblToCol(low[i] + (p[i] / 255.0) * range[i]);
- }
- return baseColor;
-}
-
-void GfxIndexedColorSpace::getGray(GfxColor *color, GfxGray *gray) {
- GfxColor color2;
-
- base->getGray(mapColorToBase(color, &color2), gray);
-}
-
-void GfxIndexedColorSpace::getRGB(GfxColor *color, GfxRGB *rgb) {
- GfxColor color2;
-
- base->getRGB(mapColorToBase(color, &color2), rgb);
-}
-
-void GfxIndexedColorSpace::getCMYK(GfxColor *color, GfxCMYK *cmyk) {
- GfxColor color2;
-
- base->getCMYK(mapColorToBase(color, &color2), cmyk);
-}
-
-void GfxIndexedColorSpace::getDefaultColor(GfxColor *color) {
- color->c[0] = 0;
-}
-
-void GfxIndexedColorSpace::getDefaultRanges(double *decodeLow,
- double *decodeRange,
- int maxImgPixel) {
- decodeLow[0] = 0;
- decodeRange[0] = maxImgPixel;
-}
-
-//------------------------------------------------------------------------
-// GfxSeparationColorSpace
-//------------------------------------------------------------------------
-
-GfxSeparationColorSpace::GfxSeparationColorSpace(GString *nameA,
- GfxColorSpace *altA,
- Function *funcA) {
- name = nameA;
- alt = altA;
- func = funcA;
- nonMarking = !name->cmp("None");
-}
-
-GfxSeparationColorSpace::~GfxSeparationColorSpace() {
- delete name;
- delete alt;
- delete func;
-}
-
-GfxColorSpace *GfxSeparationColorSpace::copy() {
- return new GfxSeparationColorSpace(name->copy(), alt->copy(), func->copy());
-}
-
-//~ handle the 'All' and 'None' colorants
-GfxColorSpace *GfxSeparationColorSpace::parse(Array *arr) {
- GfxSeparationColorSpace *cs;
- GString *nameA;
- GfxColorSpace *altA;
- Function *funcA;
- Object obj1;
-
- if (arr->getLength() != 4) {
- error(-1, "Bad Separation color space");
- goto err1;
- }
- if (!arr->get(1, &obj1)->isName()) {
- error(-1, "Bad Separation color space (name)");
- goto err2;
- }
- nameA = new GString(obj1.getName());
- obj1.free();
- arr->get(2, &obj1);
- if (!(altA = GfxColorSpace::parse(&obj1))) {
- error(-1, "Bad Separation color space (alternate color space)");
- goto err3;
- }
- obj1.free();
- arr->get(3, &obj1);
- if (!(funcA = Function::parse(&obj1))) {
- goto err4;
- }
- obj1.free();
- cs = new GfxSeparationColorSpace(nameA, altA, funcA);
- return cs;
-
- err4:
- delete altA;
- err3:
- delete nameA;
- err2:
- obj1.free();
- err1:
- return NULL;
-}
-
-void GfxSeparationColorSpace::getGray(GfxColor *color, GfxGray *gray) {
- double x;
- double c[gfxColorMaxComps];
- GfxColor color2;
- int i;
-
- x = colToDbl(color->c[0]);
- func->transform(&x, c);
- for (i = 0; i < alt->getNComps(); ++i) {
- color2.c[i] = dblToCol(c[i]);
- }
- alt->getGray(&color2, gray);
-}
-
-void GfxSeparationColorSpace::getRGB(GfxColor *color, GfxRGB *rgb) {
- double x;
- double c[gfxColorMaxComps];
- GfxColor color2;
- int i;
-
- x = colToDbl(color->c[0]);
- func->transform(&x, c);
- for (i = 0; i < alt->getNComps(); ++i) {
- color2.c[i] = dblToCol(c[i]);
- }
- alt->getRGB(&color2, rgb);
-}
-
-void GfxSeparationColorSpace::getCMYK(GfxColor *color, GfxCMYK *cmyk) {
- double x;
- double c[gfxColorMaxComps];
- GfxColor color2;
- int i;
-
- x = colToDbl(color->c[0]);
- func->transform(&x, c);
- for (i = 0; i < alt->getNComps(); ++i) {
- color2.c[i] = dblToCol(c[i]);
- }
- alt->getCMYK(&color2, cmyk);
-}
-
-void GfxSeparationColorSpace::getDefaultColor(GfxColor *color) {
- color->c[0] = gfxColorComp1;
-}
-
-//------------------------------------------------------------------------
-// GfxDeviceNColorSpace
-//------------------------------------------------------------------------
-
-GfxDeviceNColorSpace::GfxDeviceNColorSpace(int nCompsA,
- GfxColorSpace *altA,
- Function *funcA) {
- nComps = nCompsA;
- alt = altA;
- func = funcA;
- nonMarking = gFalse;
-}
-
-GfxDeviceNColorSpace::~GfxDeviceNColorSpace() {
- int i;
-
- for (i = 0; i < nComps; ++i) {
- delete names[i];
- }
- delete alt;
- delete func;
-}
-
-GfxColorSpace *GfxDeviceNColorSpace::copy() {
- GfxDeviceNColorSpace *cs;
- int i;
-
- cs = new GfxDeviceNColorSpace(nComps, alt->copy(), func->copy());
- for (i = 0; i < nComps; ++i) {
- cs->names[i] = names[i]->copy();
- }
- cs->nonMarking = nonMarking;
- return cs;
-}
-
-//~ handle the 'None' colorant
-GfxColorSpace *GfxDeviceNColorSpace::parse(Array *arr) {
- GfxDeviceNColorSpace *cs;
- int nCompsA;
- GString *namesA[gfxColorMaxComps];
- GfxColorSpace *altA;
- Function *funcA;
- Object obj1, obj2;
- int i;
-
- if (arr->getLength() != 4 && arr->getLength() != 5) {
- error(-1, "Bad DeviceN color space");
- goto err1;
- }
- if (!arr->get(1, &obj1)->isArray()) {
- error(-1, "Bad DeviceN color space (names)");
- goto err2;
- }
- nCompsA = obj1.arrayGetLength();
- if (nCompsA > gfxColorMaxComps) {
- error(-1, "DeviceN color space with too many (%d > %d) components",
- nCompsA, gfxColorMaxComps);
- nCompsA = gfxColorMaxComps;
- }
- for (i = 0; i < nCompsA; ++i) {
- if (!obj1.arrayGet(i, &obj2)->isName()) {
- error(-1, "Bad DeviceN color space (names)");
- obj2.free();
- goto err2;
- }
- namesA[i] = new GString(obj2.getName());
- obj2.free();
- }
- obj1.free();
- arr->get(2, &obj1);
- if (!(altA = GfxColorSpace::parse(&obj1))) {
- error(-1, "Bad DeviceN color space (alternate color space)");
- goto err3;
- }
- obj1.free();
- arr->get(3, &obj1);
- if (!(funcA = Function::parse(&obj1))) {
- goto err4;
- }
- obj1.free();
- cs = new GfxDeviceNColorSpace(nCompsA, altA, funcA);
- cs->nonMarking = gTrue;
- for (i = 0; i < nCompsA; ++i) {
- cs->names[i] = namesA[i];
- if (namesA[i]->cmp("None")) {
- cs->nonMarking = gFalse;
- }
- }
- return cs;
-
- err4:
- delete altA;
- err3:
- for (i = 0; i < nCompsA; ++i) {
- delete namesA[i];
- }
- err2:
- obj1.free();
- err1:
- return NULL;
-}
-
-void GfxDeviceNColorSpace::getGray(GfxColor *color, GfxGray *gray) {
- double x[gfxColorMaxComps], c[gfxColorMaxComps];
- GfxColor color2;
- int i;
-
- for (i = 0; i < nComps; ++i) {
- x[i] = colToDbl(color->c[i]);
- }
- func->transform(x, c);
- for (i = 0; i < alt->getNComps(); ++i) {
- color2.c[i] = dblToCol(c[i]);
- }
- alt->getGray(&color2, gray);
-}
-
-void GfxDeviceNColorSpace::getRGB(GfxColor *color, GfxRGB *rgb) {
- double x[gfxColorMaxComps], c[gfxColorMaxComps];
- GfxColor color2;
- int i;
-
- for (i = 0; i < nComps; ++i) {
- x[i] = colToDbl(color->c[i]);
- }
- func->transform(x, c);
- for (i = 0; i < alt->getNComps(); ++i) {
- color2.c[i] = dblToCol(c[i]);
- }
- alt->getRGB(&color2, rgb);
-}
-
-void GfxDeviceNColorSpace::getCMYK(GfxColor *color, GfxCMYK *cmyk) {
- double x[gfxColorMaxComps], c[gfxColorMaxComps];
- GfxColor color2;
- int i;
-
- for (i = 0; i < nComps; ++i) {
- x[i] = colToDbl(color->c[i]);
- }
- func->transform(x, c);
- for (i = 0; i < alt->getNComps(); ++i) {
- color2.c[i] = dblToCol(c[i]);
- }
- alt->getCMYK(&color2, cmyk);
-}
-
-void GfxDeviceNColorSpace::getDefaultColor(GfxColor *color) {
- int i;
-
- for (i = 0; i < nComps; ++i) {
- color->c[i] = gfxColorComp1;
- }
-}
-
-//------------------------------------------------------------------------
-// GfxPatternColorSpace
-//------------------------------------------------------------------------
-
-GfxPatternColorSpace::GfxPatternColorSpace(GfxColorSpace *underA) {
- under = underA;
-}
-
-GfxPatternColorSpace::~GfxPatternColorSpace() {
- if (under) {
- delete under;
- }
-}
-
-GfxColorSpace *GfxPatternColorSpace::copy() {
- return new GfxPatternColorSpace(under ? under->copy() :
- (GfxColorSpace *)NULL);
-}
-
-GfxColorSpace *GfxPatternColorSpace::parse(Array *arr) {
- GfxPatternColorSpace *cs;
- GfxColorSpace *underA;
- Object obj1;
-
- if (arr->getLength() != 1 && arr->getLength() != 2) {
- error(-1, "Bad Pattern color space");
- return NULL;
- }
- underA = NULL;
- if (arr->getLength() == 2) {
- arr->get(1, &obj1);
- if (!(underA = GfxColorSpace::parse(&obj1))) {
- error(-1, "Bad Pattern color space (underlying color space)");
- obj1.free();
- return NULL;
- }
- obj1.free();
- }
- cs = new GfxPatternColorSpace(underA);
- return cs;
-}
-
-void GfxPatternColorSpace::getGray(GfxColor * /*color*/, GfxGray *gray) {
- *gray = 0;
-}
-
-void GfxPatternColorSpace::getRGB(GfxColor * /*color*/, GfxRGB *rgb) {
- rgb->r = rgb->g = rgb->b = 0;
-}
-
-void GfxPatternColorSpace::getCMYK(GfxColor * /*color*/, GfxCMYK *cmyk) {
- cmyk->c = cmyk->m = cmyk->y = 0;
- cmyk->k = 1;
-}
-
-void GfxPatternColorSpace::getDefaultColor(GfxColor * /*color*/) {
- // not used
-}
-
-//------------------------------------------------------------------------
-// Pattern
-//------------------------------------------------------------------------
-
-GfxPattern::GfxPattern(int typeA) {
- type = typeA;
-}
-
-GfxPattern::~GfxPattern() {
-}
-
-GfxPattern *GfxPattern::parse(Object *obj) {
- GfxPattern *pattern;
- Object obj1;
-
- if (obj->isDict()) {
- obj->dictLookup("PatternType", &obj1);
- } else if (obj->isStream()) {
- obj->streamGetDict()->lookup("PatternType", &obj1);
- } else {
- return NULL;
- }
- pattern = NULL;
- if (obj1.isInt() && obj1.getInt() == 1) {
- pattern = GfxTilingPattern::parse(obj);
- } else if (obj1.isInt() && obj1.getInt() == 2) {
- pattern = GfxShadingPattern::parse(obj);
- }
- obj1.free();
- return pattern;
-}
-
-//------------------------------------------------------------------------
-// GfxTilingPattern
-//------------------------------------------------------------------------
-
-GfxTilingPattern *GfxTilingPattern::parse(Object *patObj) {
- GfxTilingPattern *pat;
- Dict *dict;
- int paintTypeA, tilingTypeA;
- double bboxA[4], matrixA[6];
- double xStepA, yStepA;
- Object resDictA;
- Object obj1, obj2;
- int i;
-
- if (!patObj->isStream()) {
- return NULL;
- }
- dict = patObj->streamGetDict();
-
- if (dict->lookup("PaintType", &obj1)->isInt()) {
- paintTypeA = obj1.getInt();
- } else {
- paintTypeA = 1;
- error(-1, "Invalid or missing PaintType in pattern");
- }
- obj1.free();
- if (dict->lookup("TilingType", &obj1)->isInt()) {
- tilingTypeA = obj1.getInt();
- } else {
- tilingTypeA = 1;
- error(-1, "Invalid or missing TilingType in pattern");
- }
- obj1.free();
- bboxA[0] = bboxA[1] = 0;
- bboxA[2] = bboxA[3] = 1;
- if (dict->lookup("BBox", &obj1)->isArray() &&
- obj1.arrayGetLength() == 4) {
- for (i = 0; i < 4; ++i) {
- if (obj1.arrayGet(i, &obj2)->isNum()) {
- bboxA[i] = obj2.getNum();
- }
- obj2.free();
- }
- } else {
- error(-1, "Invalid or missing BBox in pattern");
- }
- obj1.free();
- if (dict->lookup("XStep", &obj1)->isNum()) {
- xStepA = obj1.getNum();
- } else {
- xStepA = 1;
- error(-1, "Invalid or missing XStep in pattern");
- }
- obj1.free();
- if (dict->lookup("YStep", &obj1)->isNum()) {
- yStepA = obj1.getNum();
- } else {
- yStepA = 1;
- error(-1, "Invalid or missing YStep in pattern");
- }
- obj1.free();
- if (!dict->lookup("Resources", &resDictA)->isDict()) {
- resDictA.free();
- resDictA.initNull();
- error(-1, "Invalid or missing Resources in pattern");
- }
- matrixA[0] = 1; matrixA[1] = 0;
- matrixA[2] = 0; matrixA[3] = 1;
- matrixA[4] = 0; matrixA[5] = 0;
- if (dict->lookup("Matrix", &obj1)->isArray() &&
- obj1.arrayGetLength() == 6) {
- for (i = 0; i < 6; ++i) {
- if (obj1.arrayGet(i, &obj2)->isNum()) {
- matrixA[i] = obj2.getNum();
- }
- obj2.free();
- }
- }
- obj1.free();
-
- pat = new GfxTilingPattern(paintTypeA, tilingTypeA, bboxA, xStepA, yStepA,
- &resDictA, matrixA, patObj);
- resDictA.free();
- return pat;
-}
-
-GfxTilingPattern::GfxTilingPattern(int paintTypeA, int tilingTypeA,
- double *bboxA, double xStepA, double yStepA,
- Object *resDictA, double *matrixA,
- Object *contentStreamA):
- GfxPattern(1)
-{
- int i;
-
- paintType = paintTypeA;
- tilingType = tilingTypeA;
- for (i = 0; i < 4; ++i) {
- bbox[i] = bboxA[i];
- }
- xStep = xStepA;
- yStep = yStepA;
- resDictA->copy(&resDict);
- for (i = 0; i < 6; ++i) {
- matrix[i] = matrixA[i];
- }
- contentStreamA->copy(&contentStream);
-}
-
-GfxTilingPattern::~GfxTilingPattern() {
- resDict.free();
- contentStream.free();
-}
-
-GfxPattern *GfxTilingPattern::copy() {
- return new GfxTilingPattern(paintType, tilingType, bbox, xStep, yStep,
- &resDict, matrix, &contentStream);
-}
-
-//------------------------------------------------------------------------
-// GfxShadingPattern
-//------------------------------------------------------------------------
-
-GfxShadingPattern *GfxShadingPattern::parse(Object *patObj) {
- Dict *dict;
- GfxShading *shadingA;
- double matrixA[6];
- Object obj1, obj2;
- int i;
-
- if (!patObj->isDict()) {
- return NULL;
- }
- dict = patObj->getDict();
-
- dict->lookup("Shading", &obj1);
- shadingA = GfxShading::parse(&obj1);
- obj1.free();
- if (!shadingA) {
- return NULL;
- }
-
- matrixA[0] = 1; matrixA[1] = 0;
- matrixA[2] = 0; matrixA[3] = 1;
- matrixA[4] = 0; matrixA[5] = 0;
- if (dict->lookup("Matrix", &obj1)->isArray() &&
- obj1.arrayGetLength() == 6) {
- for (i = 0; i < 6; ++i) {
- if (obj1.arrayGet(i, &obj2)->isNum()) {
- matrixA[i] = obj2.getNum();
- }
- obj2.free();
- }
- }
- obj1.free();
-
- return new GfxShadingPattern(shadingA, matrixA);
-}
-
-GfxShadingPattern::GfxShadingPattern(GfxShading *shadingA, double *matrixA):
- GfxPattern(2)
-{
- int i;
-
- shading = shadingA;
- for (i = 0; i < 6; ++i) {
- matrix[i] = matrixA[i];
- }
-}
-
-GfxShadingPattern::~GfxShadingPattern() {
- delete shading;
-}
-
-GfxPattern *GfxShadingPattern::copy() {
- return new GfxShadingPattern(shading->copy(), matrix);
-}
-
-//------------------------------------------------------------------------
-// GfxShading
-//------------------------------------------------------------------------
-
-GfxShading::GfxShading(int typeA) {
- type = typeA;
- colorSpace = NULL;
-}
-
-GfxShading::GfxShading(GfxShading *shading) {
- int i;
-
- type = shading->type;
- colorSpace = shading->colorSpace->copy();
- for (i = 0; i < gfxColorMaxComps; ++i) {
- background.c[i] = shading->background.c[i];
- }
- hasBackground = shading->hasBackground;
- xMin = shading->xMin;
- yMin = shading->yMin;
- xMax = shading->xMax;
- yMax = shading->yMax;
- hasBBox = shading->hasBBox;
-}
-
-GfxShading::~GfxShading() {
- if (colorSpace) {
- delete colorSpace;
- }
-}
-
-GfxShading *GfxShading::parse(Object *obj) {
- GfxShading *shading;
- Dict *dict;
- int typeA;
- Object obj1;
-
- if (obj->isDict()) {
- dict = obj->getDict();
- } else if (obj->isStream()) {
- dict = obj->streamGetDict();
- } else {
- return NULL;
- }
-
- if (!dict->lookup("ShadingType", &obj1)->isInt()) {
- error(-1, "Invalid ShadingType in shading dictionary");
- obj1.free();
- return NULL;
- }
- typeA = obj1.getInt();
- obj1.free();
-
- switch (typeA) {
- case 1:
- shading = GfxFunctionShading::parse(dict);
- break;
- case 2:
- shading = GfxAxialShading::parse(dict);
- break;
- case 3:
- shading = GfxRadialShading::parse(dict);
- break;
- case 4:
- if (obj->isStream()) {
- shading = GfxGouraudTriangleShading::parse(4, dict, obj->getStream());
- } else {
- error(-1, "Invalid Type 4 shading object");
- goto err1;
- }
- break;
- case 5:
- if (obj->isStream()) {
- shading = GfxGouraudTriangleShading::parse(5, dict, obj->getStream());
- } else {
- error(-1, "Invalid Type 5 shading object");
- goto err1;
- }
- break;
- case 6:
- if (obj->isStream()) {
- shading = GfxPatchMeshShading::parse(6, dict, obj->getStream());
- } else {
- error(-1, "Invalid Type 6 shading object");
- goto err1;
- }
- break;
- case 7:
- if (obj->isStream()) {
- shading = GfxPatchMeshShading::parse(7, dict, obj->getStream());
- } else {
- error(-1, "Invalid Type 7 shading object");
- goto err1;
- }
- break;
- default:
- error(-1, "Unimplemented shading type %d", typeA);
- goto err1;
- }
-
- return shading;
-
- err1:
- return NULL;
-}
-
-GBool GfxShading::init(Dict *dict) {
- Object obj1, obj2;
- int i;
-
- dict->lookup("ColorSpace", &obj1);
- if (!(colorSpace = GfxColorSpace::parse(&obj1))) {
- error(-1, "Bad color space in shading dictionary");
- obj1.free();
- return gFalse;
- }
- obj1.free();
-
- for (i = 0; i < gfxColorMaxComps; ++i) {
- background.c[i] = 0;
- }
- hasBackground = gFalse;
- if (dict->lookup("Background", &obj1)->isArray()) {
- if (obj1.arrayGetLength() == colorSpace->getNComps()) {
- hasBackground = gTrue;
- for (i = 0; i < colorSpace->getNComps(); ++i) {
- background.c[i] = dblToCol(obj1.arrayGet(i, &obj2)->getNum());
- obj2.free();
- }
- } else {
- error(-1, "Bad Background in shading dictionary");
- }
- }
- obj1.free();
-
- xMin = yMin = xMax = yMax = 0;
- hasBBox = gFalse;
- if (dict->lookup("BBox", &obj1)->isArray()) {
- if (obj1.arrayGetLength() == 4) {
- hasBBox = gTrue;
- xMin = obj1.arrayGet(0, &obj2)->getNum();
- obj2.free();
- yMin = obj1.arrayGet(1, &obj2)->getNum();
- obj2.free();
- xMax = obj1.arrayGet(2, &obj2)->getNum();
- obj2.free();
- yMax = obj1.arrayGet(3, &obj2)->getNum();
- obj2.free();
- } else {
- error(-1, "Bad BBox in shading dictionary");
- }
- }
- obj1.free();
-
- return gTrue;
-}
-
-//------------------------------------------------------------------------
-// GfxFunctionShading
-//------------------------------------------------------------------------
-
-GfxFunctionShading::GfxFunctionShading(double x0A, double y0A,
- double x1A, double y1A,
- double *matrixA,
- Function **funcsA, int nFuncsA):
- GfxShading(1)
-{
- int i;
-
- x0 = x0A;
- y0 = y0A;
- x1 = x1A;
- y1 = y1A;
- for (i = 0; i < 6; ++i) {
- matrix[i] = matrixA[i];
- }
- nFuncs = nFuncsA;
- for (i = 0; i < nFuncs; ++i) {
- funcs[i] = funcsA[i];
- }
-}
-
-GfxFunctionShading::GfxFunctionShading(GfxFunctionShading *shading):
- GfxShading(shading)
-{
- int i;
-
- x0 = shading->x0;
- y0 = shading->y0;
- x1 = shading->x1;
- y1 = shading->y1;
- for (i = 0; i < 6; ++i) {
- matrix[i] = shading->matrix[i];
- }
- nFuncs = shading->nFuncs;
- for (i = 0; i < nFuncs; ++i) {
- funcs[i] = shading->funcs[i]->copy();
- }
-}
-
-GfxFunctionShading::~GfxFunctionShading() {
- int i;
-
- for (i = 0; i < nFuncs; ++i) {
- delete funcs[i];
- }
-}
-
-GfxFunctionShading *GfxFunctionShading::parse(Dict *dict) {
- GfxFunctionShading *shading;
- double x0A, y0A, x1A, y1A;
- double matrixA[6];
- Function *funcsA[gfxColorMaxComps];
- int nFuncsA;
- Object obj1, obj2;
- int i;
-
- x0A = y0A = 0;
- x1A = y1A = 1;
- if (dict->lookup("Domain", &obj1)->isArray() &&
- obj1.arrayGetLength() == 4) {
- x0A = obj1.arrayGet(0, &obj2)->getNum();
- obj2.free();
- x1A = obj1.arrayGet(1, &obj2)->getNum();
- obj2.free();
- y0A = obj1.arrayGet(2, &obj2)->getNum();
- obj2.free();
- y1A = obj1.arrayGet(3, &obj2)->getNum();
- obj2.free();
- }
- obj1.free();
-
- matrixA[0] = 1; matrixA[1] = 0;
- matrixA[2] = 0; matrixA[3] = 1;
- matrixA[4] = 0; matrixA[5] = 0;
- if (dict->lookup("Matrix", &obj1)->isArray() &&
- obj1.arrayGetLength() == 6) {
- matrixA[0] = obj1.arrayGet(0, &obj2)->getNum();
- obj2.free();
- matrixA[1] = obj1.arrayGet(1, &obj2)->getNum();
- obj2.free();
- matrixA[2] = obj1.arrayGet(2, &obj2)->getNum();
- obj2.free();
- matrixA[3] = obj1.arrayGet(3, &obj2)->getNum();
- obj2.free();
- matrixA[4] = obj1.arrayGet(4, &obj2)->getNum();
- obj2.free();
- matrixA[5] = obj1.arrayGet(5, &obj2)->getNum();
- obj2.free();
- }
- obj1.free();
-
- dict->lookup("Function", &obj1);
- if (obj1.isArray()) {
- nFuncsA = obj1.arrayGetLength();
- if (nFuncsA > gfxColorMaxComps) {
- error(-1, "Invalid Function array in shading dictionary");
- goto err1;
- }
- for (i = 0; i < nFuncsA; ++i) {
- obj1.arrayGet(i, &obj2);
- if (!(funcsA[i] = Function::parse(&obj2))) {
- goto err2;
- }
- obj2.free();
- }
- } else {
- nFuncsA = 1;
- if (!(funcsA[0] = Function::parse(&obj1))) {
- goto err1;
- }
- }
- obj1.free();
-
- shading = new GfxFunctionShading(x0A, y0A, x1A, y1A, matrixA,
- funcsA, nFuncsA);
- if (!shading->init(dict)) {
- delete shading;
- return NULL;
- }
- return shading;
-
- err2:
- obj2.free();
- err1:
- obj1.free();
- return NULL;
-}
-
-GfxShading *GfxFunctionShading::copy() {
- return new GfxFunctionShading(this);
-}
-
-void GfxFunctionShading::getColor(double x, double y, GfxColor *color) {
- double in[2], out[gfxColorMaxComps];
- int i;
-
- // NB: there can be one function with n outputs or n functions with
- // one output each (where n = number of color components)
- for (i = 0; i < gfxColorMaxComps; ++i) {
- out[i] = 0;
- }
- in[0] = x;
- in[1] = y;
- for (i = 0; i < nFuncs; ++i) {
- funcs[i]->transform(in, &out[i]);
- }
- for (i = 0; i < gfxColorMaxComps; ++i) {
- color->c[i] = dblToCol(out[i]);
- }
-}
-
-//------------------------------------------------------------------------
-// GfxAxialShading
-//------------------------------------------------------------------------
-
-GfxAxialShading::GfxAxialShading(double x0A, double y0A,
- double x1A, double y1A,
- double t0A, double t1A,
- Function **funcsA, int nFuncsA,
- GBool extend0A, GBool extend1A):
- GfxShading(2)
-{
- int i;
-
- x0 = x0A;
- y0 = y0A;
- x1 = x1A;
- y1 = y1A;
- t0 = t0A;
- t1 = t1A;
- nFuncs = nFuncsA;
- for (i = 0; i < nFuncs; ++i) {
- funcs[i] = funcsA[i];
- }
- extend0 = extend0A;
- extend1 = extend1A;
-}
-
-GfxAxialShading::GfxAxialShading(GfxAxialShading *shading):
- GfxShading(shading)
-{
- int i;
-
- x0 = shading->x0;
- y0 = shading->y0;
- x1 = shading->x1;
- y1 = shading->y1;
- t0 = shading->t0;
- y1 = shading->t1;
- nFuncs = shading->nFuncs;
- for (i = 0; i < nFuncs; ++i) {
- funcs[i] = shading->funcs[i]->copy();
- }
- extend0 = shading->extend0;
- extend1 = shading->extend1;
-}
-
-GfxAxialShading::~GfxAxialShading() {
- int i;
-
- for (i = 0; i < nFuncs; ++i) {
- delete funcs[i];
- }
-}
-
-GfxAxialShading *GfxAxialShading::parse(Dict *dict) {
- GfxAxialShading *shading;
- double x0A, y0A, x1A, y1A;
- double t0A, t1A;
- Function *funcsA[gfxColorMaxComps];
- int nFuncsA;
- GBool extend0A, extend1A;
- Object obj1, obj2;
- int i;
-
- x0A = y0A = x1A = y1A = 0;
- if (dict->lookup("Coords", &obj1)->isArray() &&
- obj1.arrayGetLength() == 4) {
- x0A = obj1.arrayGet(0, &obj2)->getNum();
- obj2.free();
- y0A = obj1.arrayGet(1, &obj2)->getNum();
- obj2.free();
- x1A = obj1.arrayGet(2, &obj2)->getNum();
- obj2.free();
- y1A = obj1.arrayGet(3, &obj2)->getNum();
- obj2.free();
- } else {
- error(-1, "Missing or invalid Coords in shading dictionary");
- goto err1;
- }
- obj1.free();
-
- t0A = 0;
- t1A = 1;
- if (dict->lookup("Domain", &obj1)->isArray() &&
- obj1.arrayGetLength() == 2) {
- t0A = obj1.arrayGet(0, &obj2)->getNum();
- obj2.free();
- t1A = obj1.arrayGet(1, &obj2)->getNum();
- obj2.free();
- }
- obj1.free();
-
- dict->lookup("Function", &obj1);
- if (obj1.isArray()) {
- nFuncsA = obj1.arrayGetLength();
- if (nFuncsA > gfxColorMaxComps) {
- error(-1, "Invalid Function array in shading dictionary");
- goto err1;
- }
- for (i = 0; i < nFuncsA; ++i) {
- obj1.arrayGet(i, &obj2);
- if (!(funcsA[i] = Function::parse(&obj2))) {
- obj1.free();
- obj2.free();
- goto err1;
- }
- obj2.free();
- }
- } else {
- nFuncsA = 1;
- if (!(funcsA[0] = Function::parse(&obj1))) {
- obj1.free();
- goto err1;
- }
- }
- obj1.free();
-
- extend0A = extend1A = gFalse;
- if (dict->lookup("Extend", &obj1)->isArray() &&
- obj1.arrayGetLength() == 2) {
- extend0A = obj1.arrayGet(0, &obj2)->getBool();
- obj2.free();
- extend1A = obj1.arrayGet(1, &obj2)->getBool();
- obj2.free();
- }
- obj1.free();
-
- shading = new GfxAxialShading(x0A, y0A, x1A, y1A, t0A, t1A,
- funcsA, nFuncsA, extend0A, extend1A);
- if (!shading->init(dict)) {
- delete shading;
- return NULL;
- }
- return shading;
-
- err1:
- return NULL;
-}
-
-GfxShading *GfxAxialShading::copy() {
- return new GfxAxialShading(this);
-}
-
-void GfxAxialShading::getColor(double t, GfxColor *color) {
- double out[gfxColorMaxComps];
- int i;
-
- // NB: there can be one function with n outputs or n functions with
- // one output each (where n = number of color components)
- for (i = 0; i < gfxColorMaxComps; ++i) {
- out[i] = 0;
- }
- for (i = 0; i < nFuncs; ++i) {
- funcs[i]->transform(&t, &out[i]);
- }
- for (i = 0; i < gfxColorMaxComps; ++i) {
- color->c[i] = dblToCol(out[i]);
- }
-}
-
-//------------------------------------------------------------------------
-// GfxRadialShading
-//------------------------------------------------------------------------
-
-GfxRadialShading::GfxRadialShading(double x0A, double y0A, double r0A,
- double x1A, double y1A, double r1A,
- double t0A, double t1A,
- Function **funcsA, int nFuncsA,
- GBool extend0A, GBool extend1A):
- GfxShading(3)
-{
- int i;
-
- x0 = x0A;
- y0 = y0A;
- r0 = r0A;
- x1 = x1A;
- y1 = y1A;
- r1 = r1A;
- t0 = t0A;
- t1 = t1A;
- nFuncs = nFuncsA;
- for (i = 0; i < nFuncs; ++i) {
- funcs[i] = funcsA[i];
- }
- extend0 = extend0A;
- extend1 = extend1A;
-}
-
-GfxRadialShading::GfxRadialShading(GfxRadialShading *shading):
- GfxShading(shading)
-{
- int i;
-
- x0 = shading->x0;
- y0 = shading->y0;
- r0 = shading->r0;
- x1 = shading->x1;
- y1 = shading->y1;
- r1 = shading->r1;
- t0 = shading->t0;
- y1 = shading->t1;
- nFuncs = shading->nFuncs;
- for (i = 0; i < nFuncs; ++i) {
- funcs[i] = shading->funcs[i]->copy();
- }
- extend0 = shading->extend0;
- extend1 = shading->extend1;
-}
-
-GfxRadialShading::~GfxRadialShading() {
- int i;
-
- for (i = 0; i < nFuncs; ++i) {
- delete funcs[i];
- }
-}
-
-GfxRadialShading *GfxRadialShading::parse(Dict *dict) {
- GfxRadialShading *shading;
- double x0A, y0A, r0A, x1A, y1A, r1A;
- double t0A, t1A;
- Function *funcsA[gfxColorMaxComps];
- int nFuncsA;
- GBool extend0A, extend1A;
- Object obj1, obj2;
- int i;
-
- x0A = y0A = r0A = x1A = y1A = r1A = 0;
- if (dict->lookup("Coords", &obj1)->isArray() &&
- obj1.arrayGetLength() == 6) {
- x0A = obj1.arrayGet(0, &obj2)->getNum();
- obj2.free();
- y0A = obj1.arrayGet(1, &obj2)->getNum();
- obj2.free();
- r0A = obj1.arrayGet(2, &obj2)->getNum();
- obj2.free();
- x1A = obj1.arrayGet(3, &obj2)->getNum();
- obj2.free();
- y1A = obj1.arrayGet(4, &obj2)->getNum();
- obj2.free();
- r1A = obj1.arrayGet(5, &obj2)->getNum();
- obj2.free();
- } else {
- error(-1, "Missing or invalid Coords in shading dictionary");
- goto err1;
- }
- obj1.free();
-
- t0A = 0;
- t1A = 1;
- if (dict->lookup("Domain", &obj1)->isArray() &&
- obj1.arrayGetLength() == 2) {
- t0A = obj1.arrayGet(0, &obj2)->getNum();
- obj2.free();
- t1A = obj1.arrayGet(1, &obj2)->getNum();
- obj2.free();
- }
- obj1.free();
-
- dict->lookup("Function", &obj1);
- if (obj1.isArray()) {
- nFuncsA = obj1.arrayGetLength();
- if (nFuncsA > gfxColorMaxComps) {
- error(-1, "Invalid Function array in shading dictionary");
- goto err1;
- }
- for (i = 0; i < nFuncsA; ++i) {
- obj1.arrayGet(i, &obj2);
- if (!(funcsA[i] = Function::parse(&obj2))) {
- obj1.free();
- obj2.free();
- goto err1;
- }
- obj2.free();
- }
- } else {
- nFuncsA = 1;
- if (!(funcsA[0] = Function::parse(&obj1))) {
- obj1.free();
- goto err1;
- }
- }
- obj1.free();
-
- extend0A = extend1A = gFalse;
- if (dict->lookup("Extend", &obj1)->isArray() &&
- obj1.arrayGetLength() == 2) {
- extend0A = obj1.arrayGet(0, &obj2)->getBool();
- obj2.free();
- extend1A = obj1.arrayGet(1, &obj2)->getBool();
- obj2.free();
- }
- obj1.free();
-
- shading = new GfxRadialShading(x0A, y0A, r0A, x1A, y1A, r1A, t0A, t1A,
- funcsA, nFuncsA, extend0A, extend1A);
- if (!shading->init(dict)) {
- delete shading;
- return NULL;
- }
- return shading;
-
- err1:
- return NULL;
-}
-
-GfxShading *GfxRadialShading::copy() {
- return new GfxRadialShading(this);
-}
-
-void GfxRadialShading::getColor(double t, GfxColor *color) {
- double out[gfxColorMaxComps];
- int i;
-
- // NB: there can be one function with n outputs or n functions with
- // one output each (where n = number of color components)
- for (i = 0; i < gfxColorMaxComps; ++i) {
- out[i] = 0;
- }
- for (i = 0; i < nFuncs; ++i) {
- funcs[i]->transform(&t, &out[i]);
- }
- for (i = 0; i < gfxColorMaxComps; ++i) {
- color->c[i] = dblToCol(out[i]);
- }
-}
-
-//------------------------------------------------------------------------
-// GfxShadingBitBuf
-//------------------------------------------------------------------------
-
-class GfxShadingBitBuf {
-public:
-
- GfxShadingBitBuf(Stream *strA);
- ~GfxShadingBitBuf();
- GBool getBits(int n, Guint *val);
- void flushBits();
-
-private:
-
- Stream *str;
- int bitBuf;
- int nBits;
-};
-
-GfxShadingBitBuf::GfxShadingBitBuf(Stream *strA) {
- str = strA;
- str->reset();
- bitBuf = 0;
- nBits = 0;
-}
-
-GfxShadingBitBuf::~GfxShadingBitBuf() {
- str->close();
-}
-
-GBool GfxShadingBitBuf::getBits(int n, Guint *val) {
- int x;
-
- if (nBits >= n) {
- x = (bitBuf >> (nBits - n)) & ((1 << n) - 1);
- nBits -= n;
- } else {
- x = 0;
- if (nBits > 0) {
- x = bitBuf & ((1 << nBits) - 1);
- n -= nBits;
- nBits = 0;
- }
- while (n > 0) {
- if ((bitBuf = str->getChar()) == EOF) {
- nBits = 0;
- return gFalse;
- }
- if (n >= 8) {
- x = (x << 8) | bitBuf;
- n -= 8;
- } else {
- x = (x << n) | (bitBuf >> (8 - n));
- nBits = 8 - n;
- n = 0;
- }
- }
- }
- *val = x;
- return gTrue;
-}
-
-void GfxShadingBitBuf::flushBits() {
- bitBuf = 0;
- nBits = 0;
-}
-
-//------------------------------------------------------------------------
-// GfxGouraudTriangleShading
-//------------------------------------------------------------------------
-
-GfxGouraudTriangleShading::GfxGouraudTriangleShading(
- int typeA,
- GfxGouraudVertex *verticesA, int nVerticesA,
- int (*trianglesA)[3], int nTrianglesA,
- Function **funcsA, int nFuncsA):
- GfxShading(typeA)
-{
- int i;
-
- vertices = verticesA;
- nVertices = nVerticesA;
- triangles = trianglesA;
- nTriangles = nTrianglesA;
- nFuncs = nFuncsA;
- for (i = 0; i < nFuncs; ++i) {
- funcs[i] = funcsA[i];
- }
-}
-
-GfxGouraudTriangleShading::GfxGouraudTriangleShading(
- GfxGouraudTriangleShading *shading):
- GfxShading(shading)
-{
- int i;
-
- nVertices = shading->nVertices;
- vertices = (GfxGouraudVertex *)gmallocn(nVertices, sizeof(GfxGouraudVertex));
- memcpy(vertices, shading->vertices, nVertices * sizeof(GfxGouraudVertex));
- nTriangles = shading->nTriangles;
- triangles = (int (*)[3])gmallocn(nTriangles * 3, sizeof(int));
- memcpy(triangles, shading->triangles, nTriangles * 3 * sizeof(int));
- nFuncs = shading->nFuncs;
- for (i = 0; i < nFuncs; ++i) {
- funcs[i] = shading->funcs[i]->copy();
- }
-}
-
-GfxGouraudTriangleShading::~GfxGouraudTriangleShading() {
- int i;
-
- gfree(vertices);
- gfree(triangles);
- for (i = 0; i < nFuncs; ++i) {
- delete funcs[i];
- }
-}
-
-GfxGouraudTriangleShading *GfxGouraudTriangleShading::parse(int typeA,
- Dict *dict,
- Stream *str) {
- GfxGouraudTriangleShading *shading;
- Function *funcsA[gfxColorMaxComps];
- int nFuncsA;
- int coordBits, compBits, flagBits, vertsPerRow, nRows;
- double xMin, xMax, yMin, yMax;
- double cMin[gfxColorMaxComps], cMax[gfxColorMaxComps];
- double xMul, yMul;
- double cMul[gfxColorMaxComps];
- GfxGouraudVertex *verticesA;
- int (*trianglesA)[3];
- int nComps, nVerticesA, nTrianglesA, vertSize, triSize;
- Guint x, y, flag;
- Guint c[gfxColorMaxComps];
- GfxShadingBitBuf *bitBuf;
- Object obj1, obj2;
- int i, j, k, state;
-
- if (dict->lookup("BitsPerCoordinate", &obj1)->isInt()) {
- coordBits = obj1.getInt();
- } else {
- error(-1, "Missing or invalid BitsPerCoordinate in shading dictionary");
- goto err2;
- }
- obj1.free();
- if (dict->lookup("BitsPerComponent", &obj1)->isInt()) {
- compBits = obj1.getInt();
- } else {
- error(-1, "Missing or invalid BitsPerComponent in shading dictionary");
- goto err2;
- }
- obj1.free();
- flagBits = vertsPerRow = 0; // make gcc happy
- if (typeA == 4) {
- if (dict->lookup("BitsPerFlag", &obj1)->isInt()) {
- flagBits = obj1.getInt();
- } else {
- error(-1, "Missing or invalid BitsPerFlag in shading dictionary");
- goto err2;
- }
- obj1.free();
- } else {
- if (dict->lookup("VerticesPerRow", &obj1)->isInt()) {
- vertsPerRow = obj1.getInt();
- } else {
- error(-1, "Missing or invalid VerticesPerRow in shading dictionary");
- goto err2;
- }
- obj1.free();
- }
- if (dict->lookup("Decode", &obj1)->isArray() &&
- obj1.arrayGetLength() >= 6) {
- xMin = obj1.arrayGet(0, &obj2)->getNum();
- obj2.free();
- xMax = obj1.arrayGet(1, &obj2)->getNum();
- obj2.free();
- xMul = (xMax - xMin) / (pow(2.0, coordBits) - 1);
- yMin = obj1.arrayGet(2, &obj2)->getNum();
- obj2.free();
- yMax = obj1.arrayGet(3, &obj2)->getNum();
- obj2.free();
- yMul = (yMax - yMin) / (pow(2.0, coordBits) - 1);
- for (i = 0; 5 + 2*i < obj1.arrayGetLength() && i < gfxColorMaxComps; ++i) {
- cMin[i] = obj1.arrayGet(4 + 2*i, &obj2)->getNum();
- obj2.free();
- cMax[i] = obj1.arrayGet(5 + 2*i, &obj2)->getNum();
- obj2.free();
- cMul[i] = (cMax[i] - cMin[i]) / (double)((1 << compBits) - 1);
- }
- nComps = i;
- } else {
- error(-1, "Missing or invalid Decode array in shading dictionary");
- goto err2;
- }
- obj1.free();
-
- if (!dict->lookup("Function", &obj1)->isNull()) {
- if (obj1.isArray()) {
- nFuncsA = obj1.arrayGetLength();
- if (nFuncsA > gfxColorMaxComps) {
- error(-1, "Invalid Function array in shading dictionary");
- goto err1;
- }
- for (i = 0; i < nFuncsA; ++i) {
- obj1.arrayGet(i, &obj2);
- if (!(funcsA[i] = Function::parse(&obj2))) {
- obj1.free();
- obj2.free();
- goto err1;
- }
- obj2.free();
- }
- } else {
- nFuncsA = 1;
- if (!(funcsA[0] = Function::parse(&obj1))) {
- obj1.free();
- goto err1;
- }
- }
- } else {
- nFuncsA = 0;
- }
- obj1.free();
-
- nVerticesA = nTrianglesA = 0;
- verticesA = NULL;
- trianglesA = NULL;
- vertSize = triSize = 0;
- state = 0;
- flag = 0; // make gcc happy
- bitBuf = new GfxShadingBitBuf(str);
- while (1) {
- if (typeA == 4) {
- if (!bitBuf->getBits(flagBits, &flag)) {
- break;
- }
- }
- if (!bitBuf->getBits(coordBits, &x) ||
- !bitBuf->getBits(coordBits, &y)) {
- break;
- }
- for (i = 0; i < nComps; ++i) {
- if (!bitBuf->getBits(compBits, &c[i])) {
- break;
- }
- }
- if (i < nComps) {
- break;
- }
- if (nVerticesA == vertSize) {
- vertSize = (vertSize == 0) ? 16 : 2 * vertSize;
- verticesA = (GfxGouraudVertex *)
- greallocn(verticesA, vertSize, sizeof(GfxGouraudVertex));
- }
- verticesA[nVerticesA].x = xMin + xMul * (double)x;
- verticesA[nVerticesA].y = yMin + yMul * (double)y;
- for (i = 0; i < nComps; ++i) {
- verticesA[nVerticesA].color.c[i] =
- dblToCol(cMin[i] + cMul[i] * (double)c[i]);
- }
- ++nVerticesA;
- bitBuf->flushBits();
- if (typeA == 4) {
- if (state == 0 || state == 1) {
- ++state;
- } else if (state == 2 || flag > 0) {
- if (nTrianglesA == triSize) {
- triSize = (triSize == 0) ? 16 : 2 * triSize;
- trianglesA = (int (*)[3])
- greallocn(trianglesA, triSize * 3, sizeof(int));
- }
- if (state == 2) {
- trianglesA[nTrianglesA][0] = nVerticesA - 3;
- trianglesA[nTrianglesA][1] = nVerticesA - 2;
- trianglesA[nTrianglesA][2] = nVerticesA - 1;
- ++state;
- } else if (flag == 1) {
- trianglesA[nTrianglesA][0] = trianglesA[nTrianglesA - 1][1];
- trianglesA[nTrianglesA][1] = trianglesA[nTrianglesA - 1][2];
- trianglesA[nTrianglesA][2] = nVerticesA - 1;
- } else { // flag == 2
- trianglesA[nTrianglesA][0] = trianglesA[nTrianglesA - 1][0];
- trianglesA[nTrianglesA][1] = trianglesA[nTrianglesA - 1][2];
- trianglesA[nTrianglesA][2] = nVerticesA - 1;
- }
- ++nTrianglesA;
- } else { // state == 3 && flag == 0
- state = 1;
- }
- }
- }
- delete bitBuf;
- if (typeA == 5) {
- nRows = nVerticesA / vertsPerRow;
- nTrianglesA = (nRows - 1) * 2 * (vertsPerRow - 1);
- trianglesA = (int (*)[3])gmallocn(nTrianglesA * 3, sizeof(int));
- k = 0;
- for (i = 0; i < nRows - 1; ++i) {
- for (j = 0; j < vertsPerRow - 1; ++j) {
- trianglesA[k][0] = i * vertsPerRow + j;
- trianglesA[k][1] = i * vertsPerRow + j+1;
- trianglesA[k][2] = (i+1) * vertsPerRow + j;
- ++k;
- trianglesA[k][0] = i * vertsPerRow + j+1;
- trianglesA[k][1] = (i+1) * vertsPerRow + j;
- trianglesA[k][2] = (i+1) * vertsPerRow + j+1;
- ++k;
- }
- }
- }
-
- shading = new GfxGouraudTriangleShading(typeA, verticesA, nVerticesA,
- trianglesA, nTrianglesA,
- funcsA, nFuncsA);
- if (!shading->init(dict)) {
- delete shading;
- return NULL;
- }
- return shading;
-
- err2:
- obj1.free();
- err1:
- return NULL;
-}
-
-GfxShading *GfxGouraudTriangleShading::copy() {
- return new GfxGouraudTriangleShading(this);
-}
-
-void GfxGouraudTriangleShading::getTriangle(
- int i,
- double *x0, double *y0, GfxColor *color0,
- double *x1, double *y1, GfxColor *color1,
- double *x2, double *y2, GfxColor *color2) {
- double in;
- double out[gfxColorMaxComps];
- int v, j;
-
- v = triangles[i][0];
- *x0 = vertices[v].x;
- *y0 = vertices[v].y;
- if (nFuncs > 0) {
- in = colToDbl(vertices[v].color.c[0]);
- for (j = 0; j < nFuncs; ++j) {
- funcs[j]->transform(&in, &out[j]);
- }
- for (j = 0; j < gfxColorMaxComps; ++j) {
- color0->c[j] = dblToCol(out[j]);
- }
- } else {
- *color0 = vertices[v].color;
- }
- v = triangles[i][1];
- *x1 = vertices[v].x;
- *y1 = vertices[v].y;
- if (nFuncs > 0) {
- in = colToDbl(vertices[v].color.c[0]);
- for (j = 0; j < nFuncs; ++j) {
- funcs[j]->transform(&in, &out[j]);
- }
- for (j = 0; j < gfxColorMaxComps; ++j) {
- color1->c[j] = dblToCol(out[j]);
- }
- } else {
- *color1 = vertices[v].color;
- }
- v = triangles[i][2];
- *x2 = vertices[v].x;
- *y2 = vertices[v].y;
- if (nFuncs > 0) {
- in = colToDbl(vertices[v].color.c[0]);
- for (j = 0; j < nFuncs; ++j) {
- funcs[j]->transform(&in, &out[j]);
- }
- for (j = 0; j < gfxColorMaxComps; ++j) {
- color2->c[j] = dblToCol(out[j]);
- }
- } else {
- *color2 = vertices[v].color;
- }
-}
-
-//------------------------------------------------------------------------
-// GfxPatchMeshShading
-//------------------------------------------------------------------------
-
-GfxPatchMeshShading::GfxPatchMeshShading(int typeA,
- GfxPatch *patchesA, int nPatchesA,
- Function **funcsA, int nFuncsA):
- GfxShading(typeA)
-{
- int i;
-
- patches = patchesA;
- nPatches = nPatchesA;
- nFuncs = nFuncsA;
- for (i = 0; i < nFuncs; ++i) {
- funcs[i] = funcsA[i];
- }
-}
-
-GfxPatchMeshShading::GfxPatchMeshShading(GfxPatchMeshShading *shading):
- GfxShading(shading)
-{
- int i;
-
- nPatches = shading->nPatches;
- patches = (GfxPatch *)gmallocn(nPatches, sizeof(GfxPatch));
- memcpy(patches, shading->patches, nPatches * sizeof(GfxPatch));
- nFuncs = shading->nFuncs;
- for (i = 0; i < nFuncs; ++i) {
- funcs[i] = shading->funcs[i]->copy();
- }
-}
-
-GfxPatchMeshShading::~GfxPatchMeshShading() {
- int i;
-
- gfree(patches);
- for (i = 0; i < nFuncs; ++i) {
- delete funcs[i];
- }
-}
-
-GfxPatchMeshShading *GfxPatchMeshShading::parse(int typeA, Dict *dict,
- Stream *str) {
- GfxPatchMeshShading *shading;
- Function *funcsA[gfxColorMaxComps];
- int nFuncsA;
- int coordBits, compBits, flagBits;
- double xMin, xMax, yMin, yMax;
- double cMin[gfxColorMaxComps], cMax[gfxColorMaxComps];
- double xMul, yMul;
- double cMul[gfxColorMaxComps];
- GfxPatch *patchesA, *p;
- int nComps, nPatchesA, patchesSize, nPts, nColors;
- Guint flag;
- double x[16], y[16];
- Guint xi, yi;
- GfxColorComp c[4][gfxColorMaxComps];
- Guint ci[4];
- GfxShadingBitBuf *bitBuf;
- Object obj1, obj2;
- int i, j;
-
- if (dict->lookup("BitsPerCoordinate", &obj1)->isInt()) {
- coordBits = obj1.getInt();
- } else {
- error(-1, "Missing or invalid BitsPerCoordinate in shading dictionary");
- goto err2;
- }
- obj1.free();
- if (dict->lookup("BitsPerComponent", &obj1)->isInt()) {
- compBits = obj1.getInt();
- } else {
- error(-1, "Missing or invalid BitsPerComponent in shading dictionary");
- goto err2;
- }
- obj1.free();
- if (dict->lookup("BitsPerFlag", &obj1)->isInt()) {
- flagBits = obj1.getInt();
- } else {
- error(-1, "Missing or invalid BitsPerFlag in shading dictionary");
- goto err2;
- }
- obj1.free();
- if (dict->lookup("Decode", &obj1)->isArray() &&
- obj1.arrayGetLength() >= 6) {
- xMin = obj1.arrayGet(0, &obj2)->getNum();
- obj2.free();
- xMax = obj1.arrayGet(1, &obj2)->getNum();
- obj2.free();
- xMul = (xMax - xMin) / (pow(2.0, coordBits) - 1);
- yMin = obj1.arrayGet(2, &obj2)->getNum();
- obj2.free();
- yMax = obj1.arrayGet(3, &obj2)->getNum();
- obj2.free();
- yMul = (yMax - yMin) / (pow(2.0, coordBits) - 1);
- for (i = 0; 5 + 2*i < obj1.arrayGetLength() && i < gfxColorMaxComps; ++i) {
- cMin[i] = obj1.arrayGet(4 + 2*i, &obj2)->getNum();
- obj2.free();
- cMax[i] = obj1.arrayGet(5 + 2*i, &obj2)->getNum();
- obj2.free();
- cMul[i] = (cMax[i] - cMin[i]) / (double)((1 << compBits) - 1);
- }
- nComps = i;
- } else {
- error(-1, "Missing or invalid Decode array in shading dictionary");
- goto err2;
- }
- obj1.free();
-
- if (!dict->lookup("Function", &obj1)->isNull()) {
- if (obj1.isArray()) {
- nFuncsA = obj1.arrayGetLength();
- if (nFuncsA > gfxColorMaxComps) {
- error(-1, "Invalid Function array in shading dictionary");
- goto err1;
- }
- for (i = 0; i < nFuncsA; ++i) {
- obj1.arrayGet(i, &obj2);
- if (!(funcsA[i] = Function::parse(&obj2))) {
- obj1.free();
- obj2.free();
- goto err1;
- }
- obj2.free();
- }
- } else {
- nFuncsA = 1;
- if (!(funcsA[0] = Function::parse(&obj1))) {
- obj1.free();
- goto err1;
- }
- }
- } else {
- nFuncsA = 0;
- }
- obj1.free();
-
- nPatchesA = 0;
- patchesA = NULL;
- patchesSize = 0;
- bitBuf = new GfxShadingBitBuf(str);
- while (1) {
- if (!bitBuf->getBits(flagBits, &flag)) {
- break;
- }
- if (typeA == 6) {
- switch (flag) {
- case 0: nPts = 12; nColors = 4; break;
- case 1:
- case 2:
- case 3:
- default: nPts = 8; nColors = 2; break;
- }
- } else {
- switch (flag) {
- case 0: nPts = 16; nColors = 4; break;
- case 1:
- case 2:
- case 3:
- default: nPts = 12; nColors = 2; break;
- }
- }
- for (i = 0; i < nPts; ++i) {
- if (!bitBuf->getBits(coordBits, &xi) ||
- !bitBuf->getBits(coordBits, &yi)) {
- break;
- }
- x[i] = xMin + xMul * (double)xi;
- y[i] = yMin + yMul * (double)yi;
- }
- if (i < nPts) {
- break;
- }
- for (i = 0; i < nColors; ++i) {
- for (j = 0; j < nComps; ++j) {
- if (!bitBuf->getBits(compBits, &ci[j])) {
- break;
- }
- c[i][j] = dblToCol(cMin[j] + cMul[j] * (double)ci[j]);
- }
- if (j < nComps) {
- break;
- }
- }
- if (i < nColors) {
- break;
- }
- if (nPatchesA == patchesSize) {
- patchesSize = (patchesSize == 0) ? 16 : 2 * patchesSize;
- patchesA = (GfxPatch *)greallocn(patchesA,
- patchesSize, sizeof(GfxPatch));
- }
- p = &patchesA[nPatchesA];
- if (typeA == 6) {
- switch (flag) {
- case 0:
- p->x[0][0] = x[0];
- p->y[0][0] = y[0];
- p->x[0][1] = x[1];
- p->y[0][1] = y[1];
- p->x[0][2] = x[2];
- p->y[0][2] = y[2];
- p->x[0][3] = x[3];
- p->y[0][3] = y[3];
- p->x[1][3] = x[4];
- p->y[1][3] = y[4];
- p->x[2][3] = x[5];
- p->y[2][3] = y[5];
- p->x[3][3] = x[6];
- p->y[3][3] = y[6];
- p->x[3][2] = x[7];
- p->y[3][2] = y[7];
- p->x[3][1] = x[8];
- p->y[3][1] = y[8];
- p->x[3][0] = x[9];
- p->y[3][0] = y[9];
- p->x[2][0] = x[10];
- p->y[2][0] = y[10];
- p->x[1][0] = x[11];
- p->y[1][0] = y[11];
- for (j = 0; j < nComps; ++j) {
- p->color[0][0].c[j] = c[0][j];
- p->color[0][1].c[j] = c[1][j];
- p->color[1][1].c[j] = c[2][j];
- p->color[1][0].c[j] = c[3][j];
- }
- break;
- case 1:
- p->x[0][0] = patchesA[nPatchesA-1].x[0][3];
- p->y[0][0] = patchesA[nPatchesA-1].y[0][3];
- p->x[0][1] = patchesA[nPatchesA-1].x[1][3];
- p->y[0][1] = patchesA[nPatchesA-1].y[1][3];
- p->x[0][2] = patchesA[nPatchesA-1].x[2][3];
- p->y[0][2] = patchesA[nPatchesA-1].y[2][3];
- p->x[0][3] = patchesA[nPatchesA-1].x[3][3];
- p->y[0][3] = patchesA[nPatchesA-1].y[3][3];
- p->x[1][3] = x[0];
- p->y[1][3] = y[0];
- p->x[2][3] = x[1];
- p->y[2][3] = y[1];
- p->x[3][3] = x[2];
- p->y[3][3] = y[2];
- p->x[3][2] = x[3];
- p->y[3][2] = y[3];
- p->x[3][1] = x[4];
- p->y[3][1] = y[4];
- p->x[3][0] = x[5];
- p->y[3][0] = y[5];
- p->x[2][0] = x[6];
- p->y[2][0] = y[6];
- p->x[1][0] = x[7];
- p->y[1][0] = y[7];
- for (j = 0; j < nComps; ++j) {
- p->color[0][0].c[j] = patchesA[nPatchesA-1].color[0][1].c[j];
- p->color[0][1].c[j] = patchesA[nPatchesA-1].color[1][1].c[j];
- p->color[1][1].c[j] = c[0][j];
- p->color[1][0].c[j] = c[1][j];
- }
- break;
- case 2:
- p->x[0][0] = patchesA[nPatchesA-1].x[3][3];
- p->y[0][0] = patchesA[nPatchesA-1].y[3][3];
- p->x[0][1] = patchesA[nPatchesA-1].x[3][2];
- p->y[0][1] = patchesA[nPatchesA-1].y[3][2];
- p->x[0][2] = patchesA[nPatchesA-1].x[3][1];
- p->y[0][2] = patchesA[nPatchesA-1].y[3][1];
- p->x[0][3] = patchesA[nPatchesA-1].x[3][0];
- p->y[0][3] = patchesA[nPatchesA-1].y[3][0];
- p->x[1][3] = x[0];
- p->y[1][3] = y[0];
- p->x[2][3] = x[1];
- p->y[2][3] = y[1];
- p->x[3][3] = x[2];
- p->y[3][3] = y[2];
- p->x[3][2] = x[3];
- p->y[3][2] = y[3];
- p->x[3][1] = x[4];
- p->y[3][1] = y[4];
- p->x[3][0] = x[5];
- p->y[3][0] = y[5];
- p->x[2][0] = x[6];
- p->y[2][0] = y[6];
- p->x[1][0] = x[7];
- p->y[1][0] = y[7];
- for (j = 0; j < nComps; ++j) {
- p->color[0][0].c[j] = patchesA[nPatchesA-1].color[1][1].c[j];
- p->color[0][1].c[j] = patchesA[nPatchesA-1].color[1][0].c[j];
- p->color[1][1].c[j] = c[0][j];
- p->color[1][0].c[j] = c[1][j];
- }
- break;
- case 3:
- p->x[0][0] = patchesA[nPatchesA-1].x[3][0];
- p->y[0][0] = patchesA[nPatchesA-1].y[3][0];
- p->x[0][1] = patchesA[nPatchesA-1].x[2][0];
- p->y[0][1] = patchesA[nPatchesA-1].y[2][0];
- p->x[0][2] = patchesA[nPatchesA-1].x[1][0];
- p->y[0][2] = patchesA[nPatchesA-1].y[1][0];
- p->x[0][3] = patchesA[nPatchesA-1].x[0][0];
- p->y[0][3] = patchesA[nPatchesA-1].y[0][0];
- p->x[1][3] = x[0];
- p->y[1][3] = y[0];
- p->x[2][3] = x[1];
- p->y[2][3] = y[1];
- p->x[3][3] = x[2];
- p->y[3][3] = y[2];
- p->x[3][2] = x[3];
- p->y[3][2] = y[3];
- p->x[3][1] = x[4];
- p->y[3][1] = y[4];
- p->x[3][0] = x[5];
- p->y[3][0] = y[5];
- p->x[2][0] = x[6];
- p->y[2][0] = y[6];
- p->x[1][0] = x[7];
- p->y[1][0] = y[7];
- for (j = 0; j < nComps; ++j) {
- p->color[0][1].c[j] = patchesA[nPatchesA-1].color[1][0].c[j];
- p->color[0][1].c[j] = patchesA[nPatchesA-1].color[0][0].c[j];
- p->color[1][1].c[j] = c[0][j];
- p->color[1][0].c[j] = c[1][j];
- }
- break;
- }
- } else {
- switch (flag) {
- case 0:
- p->x[0][0] = x[0];
- p->y[0][0] = y[0];
- p->x[0][1] = x[1];
- p->y[0][1] = y[1];
- p->x[0][2] = x[2];
- p->y[0][2] = y[2];
- p->x[0][3] = x[3];
- p->y[0][3] = y[3];
- p->x[1][3] = x[4];
- p->y[1][3] = y[4];
- p->x[2][3] = x[5];
- p->y[2][3] = y[5];
- p->x[3][3] = x[6];
- p->y[3][3] = y[6];
- p->x[3][2] = x[7];
- p->y[3][2] = y[7];
- p->x[3][1] = x[8];
- p->y[3][1] = y[8];
- p->x[3][0] = x[9];
- p->y[3][0] = y[9];
- p->x[2][0] = x[10];
- p->y[2][0] = y[10];
- p->x[1][0] = x[11];
- p->y[1][0] = y[11];
- p->x[1][1] = x[12];
- p->y[1][1] = y[12];
- p->x[1][2] = x[13];
- p->y[1][2] = y[13];
- p->x[2][2] = x[14];
- p->y[2][2] = y[14];
- p->x[2][1] = x[15];
- p->y[2][1] = y[15];
- for (j = 0; j < nComps; ++j) {
- p->color[0][0].c[j] = c[0][j];
- p->color[0][1].c[j] = c[1][j];
- p->color[1][1].c[j] = c[2][j];
- p->color[1][0].c[j] = c[3][j];
- }
- break;
- case 1:
- p->x[0][0] = patchesA[nPatchesA-1].x[0][3];
- p->y[0][0] = patchesA[nPatchesA-1].y[0][3];
- p->x[0][1] = patchesA[nPatchesA-1].x[1][3];
- p->y[0][1] = patchesA[nPatchesA-1].y[1][3];
- p->x[0][2] = patchesA[nPatchesA-1].x[2][3];
- p->y[0][2] = patchesA[nPatchesA-1].y[2][3];
- p->x[0][3] = patchesA[nPatchesA-1].x[3][3];
- p->y[0][3] = patchesA[nPatchesA-1].y[3][3];
- p->x[1][3] = x[0];
- p->y[1][3] = y[0];
- p->x[2][3] = x[1];
- p->y[2][3] = y[1];
- p->x[3][3] = x[2];
- p->y[3][3] = y[2];
- p->x[3][2] = x[3];
- p->y[3][2] = y[3];
- p->x[3][1] = x[4];
- p->y[3][1] = y[4];
- p->x[3][0] = x[5];
- p->y[3][0] = y[5];
- p->x[2][0] = x[6];
- p->y[2][0] = y[6];
- p->x[1][0] = x[7];
- p->y[1][0] = y[7];
- p->x[1][1] = x[8];
- p->y[1][1] = y[8];
- p->x[1][2] = x[9];
- p->y[1][2] = y[9];
- p->x[2][2] = x[10];
- p->y[2][2] = y[10];
- p->x[2][1] = x[11];
- p->y[2][1] = y[11];
- for (j = 0; j < nComps; ++j) {
- p->color[0][0].c[j] = patchesA[nPatchesA-1].color[0][1].c[j];
- p->color[0][1].c[j] = patchesA[nPatchesA-1].color[1][1].c[j];
- p->color[1][1].c[j] = c[0][j];
- p->color[1][0].c[j] = c[1][j];
- }
- break;
- case 2:
- p->x[0][0] = patchesA[nPatchesA-1].x[3][3];
- p->y[0][0] = patchesA[nPatchesA-1].y[3][3];
- p->x[0][1] = patchesA[nPatchesA-1].x[3][2];
- p->y[0][1] = patchesA[nPatchesA-1].y[3][2];
- p->x[0][2] = patchesA[nPatchesA-1].x[3][1];
- p->y[0][2] = patchesA[nPatchesA-1].y[3][1];
- p->x[0][3] = patchesA[nPatchesA-1].x[3][0];
- p->y[0][3] = patchesA[nPatchesA-1].y[3][0];
- p->x[1][3] = x[0];
- p->y[1][3] = y[0];
- p->x[2][3] = x[1];
- p->y[2][3] = y[1];
- p->x[3][3] = x[2];
- p->y[3][3] = y[2];
- p->x[3][2] = x[3];
- p->y[3][2] = y[3];
- p->x[3][1] = x[4];
- p->y[3][1] = y[4];
- p->x[3][0] = x[5];
- p->y[3][0] = y[5];
- p->x[2][0] = x[6];
- p->y[2][0] = y[6];
- p->x[1][0] = x[7];
- p->y[1][0] = y[7];
- p->x[1][1] = x[8];
- p->y[1][1] = y[8];
- p->x[1][2] = x[9];
- p->y[1][2] = y[9];
- p->x[2][2] = x[10];
- p->y[2][2] = y[10];
- p->x[2][1] = x[11];
- p->y[2][1] = y[11];
- for (j = 0; j < nComps; ++j) {
- p->color[0][0].c[j] = patchesA[nPatchesA-1].color[1][1].c[j];
- p->color[0][1].c[j] = patchesA[nPatchesA-1].color[1][0].c[j];
- p->color[1][1].c[j] = c[0][j];
- p->color[1][0].c[j] = c[1][j];
- }
- break;
- case 3:
- p->x[0][0] = patchesA[nPatchesA-1].x[3][0];
- p->y[0][0] = patchesA[nPatchesA-1].y[3][0];
- p->x[0][1] = patchesA[nPatchesA-1].x[2][0];
- p->y[0][1] = patchesA[nPatchesA-1].y[2][0];
- p->x[0][2] = patchesA[nPatchesA-1].x[1][0];
- p->y[0][2] = patchesA[nPatchesA-1].y[1][0];
- p->x[0][3] = patchesA[nPatchesA-1].x[0][0];
- p->y[0][3] = patchesA[nPatchesA-1].y[0][0];
- p->x[1][3] = x[0];
- p->y[1][3] = y[0];
- p->x[2][3] = x[1];
- p->y[2][3] = y[1];
- p->x[3][3] = x[2];
- p->y[3][3] = y[2];
- p->x[3][2] = x[3];
- p->y[3][2] = y[3];
- p->x[3][1] = x[4];
- p->y[3][1] = y[4];
- p->x[3][0] = x[5];
- p->y[3][0] = y[5];
- p->x[2][0] = x[6];
- p->y[2][0] = y[6];
- p->x[1][0] = x[7];
- p->y[1][0] = y[7];
- p->x[1][1] = x[8];
- p->y[1][1] = y[8];
- p->x[1][2] = x[9];
- p->y[1][2] = y[9];
- p->x[2][2] = x[10];
- p->y[2][2] = y[10];
- p->x[2][1] = x[11];
- p->y[2][1] = y[11];
- for (j = 0; j < nComps; ++j) {
- p->color[0][0].c[j] = patchesA[nPatchesA-1].color[1][0].c[j];
- p->color[0][1].c[j] = patchesA[nPatchesA-1].color[0][0].c[j];
- p->color[1][1].c[j] = c[0][j];
- p->color[1][0].c[j] = c[1][j];
- }
- break;
- }
- }
- ++nPatchesA;
- bitBuf->flushBits();
- }
- delete bitBuf;
-
- if (typeA == 6) {
- for (i = 0; i < nPatchesA; ++i) {
- p = &patchesA[i];
- p->x[1][1] = (-4 * p->x[0][0]
- +6 * (p->x[0][1] + p->x[1][0])
- -2 * (p->x[0][3] + p->x[3][0])
- +3 * (p->x[3][1] + p->x[1][3])
- - p->x[3][3]) / 9;
- p->y[1][1] = (-4 * p->y[0][0]
- +6 * (p->y[0][1] + p->y[1][0])
- -2 * (p->y[0][3] + p->y[3][0])
- +3 * (p->y[3][1] + p->y[1][3])
- - p->y[3][3]) / 9;
- p->x[1][2] = (-4 * p->x[0][3]
- +6 * (p->x[0][2] + p->x[1][3])
- -2 * (p->x[0][0] + p->x[3][3])
- +3 * (p->x[3][2] + p->x[1][0])
- - p->x[3][0]) / 9;
- p->y[1][2] = (-4 * p->y[0][3]
- +6 * (p->y[0][2] + p->y[1][3])
- -2 * (p->y[0][0] + p->y[3][3])
- +3 * (p->y[3][2] + p->y[1][0])
- - p->y[3][0]) / 9;
- p->x[2][1] = (-4 * p->x[3][0]
- +6 * (p->x[3][1] + p->x[2][0])
- -2 * (p->x[3][3] + p->x[0][0])
- +3 * (p->x[0][1] + p->x[2][3])
- - p->x[0][3]) / 9;
- p->y[2][1] = (-4 * p->y[3][0]
- +6 * (p->y[3][1] + p->y[2][0])
- -2 * (p->y[3][3] + p->y[0][0])
- +3 * (p->y[0][1] + p->y[2][3])
- - p->y[0][3]) / 9;
- p->x[2][2] = (-4 * p->x[3][3]
- +6 * (p->x[3][2] + p->x[2][3])
- -2 * (p->x[3][0] + p->x[0][3])
- +3 * (p->x[0][2] + p->x[2][0])
- - p->x[0][0]) / 9;
- p->y[2][2] = (-4 * p->y[3][3]
- +6 * (p->y[3][2] + p->y[2][3])
- -2 * (p->y[3][0] + p->y[0][3])
- +3 * (p->y[0][2] + p->y[2][0])
- - p->y[0][0]) / 9;
- }
- }
-
- shading = new GfxPatchMeshShading(typeA, patchesA, nPatchesA,
- funcsA, nFuncsA);
- if (!shading->init(dict)) {
- delete shading;
- return NULL;
- }
- return shading;
-
- err2:
- obj1.free();
- err1:
- return NULL;
-}
-
-GfxShading *GfxPatchMeshShading::copy() {
- return new GfxPatchMeshShading(this);
-}
-
-//------------------------------------------------------------------------
-// GfxImageColorMap
-//------------------------------------------------------------------------
-
-GfxImageColorMap::GfxImageColorMap(int bitsA, Object *decode,
- GfxColorSpace *colorSpaceA) {
- GfxIndexedColorSpace *indexedCS;
- GfxSeparationColorSpace *sepCS;
- int maxPixel, indexHigh;
- Guchar *lookup2;
- Function *sepFunc;
- Object obj;
- double x[gfxColorMaxComps];
- double y[gfxColorMaxComps];
- int i, j, k;
-
- ok = gTrue;
-
- // bits per component and color space
- bits = bitsA;
- maxPixel = (1 << bits) - 1;
- colorSpace = colorSpaceA;
-
- // initialize
- for (k = 0; k < gfxColorMaxComps; ++k) {
- lookup[k] = NULL;
- }
-
- // get decode map
- if (decode->isNull()) {
- nComps = colorSpace->getNComps();
- colorSpace->getDefaultRanges(decodeLow, decodeRange, maxPixel);
- } else if (decode->isArray()) {
- nComps = decode->arrayGetLength() / 2;
- if (nComps != colorSpace->getNComps()) {
- goto err1;
- }
- for (i = 0; i < nComps; ++i) {
- decode->arrayGet(2*i, &obj);
- if (!obj.isNum()) {
- goto err2;
- }
- decodeLow[i] = obj.getNum();
- obj.free();
- decode->arrayGet(2*i+1, &obj);
- if (!obj.isNum()) {
- goto err2;
- }
- decodeRange[i] = obj.getNum() - decodeLow[i];
- obj.free();
- }
- } else {
- goto err1;
- }
-
- // Construct a lookup table -- this stores pre-computed decoded
- // values for each component, i.e., the result of applying the
- // decode mapping to each possible image pixel component value.
- //
- // Optimization: for Indexed and Separation color spaces (which have
- // only one component), we store color values in the lookup table
- // rather than component values.
- colorSpace2 = NULL;
- nComps2 = 0;
- if (colorSpace->getMode() == csIndexed) {
- // Note that indexHigh may not be the same as maxPixel --
- // Distiller will remove unused palette entries, resulting in
- // indexHigh < maxPixel.
- indexedCS = (GfxIndexedColorSpace *)colorSpace;
- colorSpace2 = indexedCS->getBase();
- indexHigh = indexedCS->getIndexHigh();
- nComps2 = colorSpace2->getNComps();
- lookup2 = indexedCS->getLookup();
- colorSpace2->getDefaultRanges(x, y, indexHigh);
- for (k = 0; k < nComps2; ++k) {
- lookup[k] = (GfxColorComp *)gmallocn(maxPixel + 1,
- sizeof(GfxColorComp));
- for (i = 0; i <= maxPixel; ++i) {
- j = (int)(decodeLow[0] + (i * decodeRange[0]) / maxPixel + 0.5);
- if (j < 0) {
- j = 0;
- } else if (j > indexHigh) {
- j = indexHigh;
- }
- lookup[k][i] =
- dblToCol(x[k] + (lookup2[j*nComps2 + k] / 255.0) * y[k]);
- }
- }
- } else if (colorSpace->getMode() == csSeparation) {
- sepCS = (GfxSeparationColorSpace *)colorSpace;
- colorSpace2 = sepCS->getAlt();
- nComps2 = colorSpace2->getNComps();
- sepFunc = sepCS->getFunc();
- for (k = 0; k < nComps2; ++k) {
- lookup[k] = (GfxColorComp *)gmallocn(maxPixel + 1,
- sizeof(GfxColorComp));
- for (i = 0; i <= maxPixel; ++i) {
- x[0] = decodeLow[0] + (i * decodeRange[0]) / maxPixel;
- sepFunc->transform(x, y);
- lookup[k][i] = dblToCol(y[k]);
- }
- }
- } else {
- for (k = 0; k < nComps; ++k) {
- lookup[k] = (GfxColorComp *)gmallocn(maxPixel + 1,
- sizeof(GfxColorComp));
- for (i = 0; i <= maxPixel; ++i) {
- lookup[k][i] = dblToCol(decodeLow[k] +
- (i * decodeRange[k]) / maxPixel);
- }
- }
- }
-
- return;
-
- err2:
- obj.free();
- err1:
- ok = gFalse;
-}
-
-GfxImageColorMap::GfxImageColorMap(GfxImageColorMap *colorMap) {
- int n, i, k;
-
- colorSpace = colorMap->colorSpace->copy();
- bits = colorMap->bits;
- nComps = colorMap->nComps;
- nComps2 = colorMap->nComps2;
- colorSpace2 = NULL;
- for (k = 0; k < gfxColorMaxComps; ++k) {
- lookup[k] = NULL;
- }
- n = 1 << bits;
- if (colorSpace->getMode() == csIndexed) {
- colorSpace2 = ((GfxIndexedColorSpace *)colorSpace)->getBase();
- for (k = 0; k < nComps2; ++k) {
- lookup[k] = (GfxColorComp *)gmallocn(n, sizeof(GfxColorComp));
- memcpy(lookup[k], colorMap->lookup[k], n * sizeof(GfxColorComp));
- }
- } else if (colorSpace->getMode() == csSeparation) {
- colorSpace2 = ((GfxSeparationColorSpace *)colorSpace)->getAlt();
- for (k = 0; k < nComps2; ++k) {
- lookup[k] = (GfxColorComp *)gmallocn(n, sizeof(GfxColorComp));
- memcpy(lookup[k], colorMap->lookup[k], n * sizeof(GfxColorComp));
- }
- } else {
- for (k = 0; k < nComps; ++k) {
- lookup[k] = (GfxColorComp *)gmallocn(n, sizeof(GfxColorComp));
- memcpy(lookup[k], colorMap->lookup[k], n * sizeof(GfxColorComp));
- }
- }
- for (i = 0; i < nComps; ++i) {
- decodeLow[i] = colorMap->decodeLow[i];
- decodeRange[i] = colorMap->decodeRange[i];
- }
- ok = gTrue;
-}
-
-GfxImageColorMap::~GfxImageColorMap() {
- int i;
-
- delete colorSpace;
- for (i = 0; i < gfxColorMaxComps; ++i) {
- gfree(lookup[i]);
- }
-}
-
-void GfxImageColorMap::getGray(Guchar *x, GfxGray *gray) {
- GfxColor color;
- int i;
-
- if (colorSpace2) {
- for (i = 0; i < nComps2; ++i) {
- color.c[i] = lookup[i][x[0]];
- }
- colorSpace2->getGray(&color, gray);
- } else {
- for (i = 0; i < nComps; ++i) {
- color.c[i] = lookup[i][x[i]];
- }
- colorSpace->getGray(&color, gray);
- }
-}
-
-void GfxImageColorMap::getRGB(Guchar *x, GfxRGB *rgb) {
- GfxColor color;
- int i;
-
- if (colorSpace2) {
- for (i = 0; i < nComps2; ++i) {
- color.c[i] = lookup[i][x[0]];
- }
- colorSpace2->getRGB(&color, rgb);
- } else {
- for (i = 0; i < nComps; ++i) {
- color.c[i] = lookup[i][x[i]];
- }
- colorSpace->getRGB(&color, rgb);
- }
-}
-
-void GfxImageColorMap::getCMYK(Guchar *x, GfxCMYK *cmyk) {
- GfxColor color;
- int i;
-
- if (colorSpace2) {
- for (i = 0; i < nComps2; ++i) {
- color.c[i] = lookup[i][x[0]];
- }
- colorSpace2->getCMYK(&color, cmyk);
- } else {
- for (i = 0; i < nComps; ++i) {
- color.c[i] = lookup[i][x[i]];
- }
- colorSpace->getCMYK(&color, cmyk);
- }
-}
-
-void GfxImageColorMap::getColor(Guchar *x, GfxColor *color) {
- int maxPixel, i;
-
- maxPixel = (1 << bits) - 1;
- for (i = 0; i < nComps; ++i) {
- color->c[i] = dblToCol(decodeLow[i] + (x[i] * decodeRange[i]) / maxPixel);
- }
-}
-
-//------------------------------------------------------------------------
-// GfxSubpath and GfxPath
-//------------------------------------------------------------------------
-
-GfxSubpath::GfxSubpath(double x1, double y1) {
- size = 16;
- x = (double *)gmallocn(size, sizeof(double));
- y = (double *)gmallocn(size, sizeof(double));
- curve = (GBool *)gmallocn(size, sizeof(GBool));
- n = 1;
- x[0] = x1;
- y[0] = y1;
- curve[0] = gFalse;
- closed = gFalse;
-}
-
-GfxSubpath::~GfxSubpath() {
- gfree(x);
- gfree(y);
- gfree(curve);
-}
-
-// Used for copy().
-GfxSubpath::GfxSubpath(GfxSubpath *subpath) {
- size = subpath->size;
- n = subpath->n;
- x = (double *)gmallocn(size, sizeof(double));
- y = (double *)gmallocn(size, sizeof(double));
- curve = (GBool *)gmallocn(size, sizeof(GBool));
- memcpy(x, subpath->x, n * sizeof(double));
- memcpy(y, subpath->y, n * sizeof(double));
- memcpy(curve, subpath->curve, n * sizeof(GBool));
- closed = subpath->closed;
-}
-
-void GfxSubpath::lineTo(double x1, double y1) {
- if (n >= size) {
- size += 16;
- x = (double *)greallocn(x, size, sizeof(double));
- y = (double *)greallocn(y, size, sizeof(double));
- curve = (GBool *)greallocn(curve, size, sizeof(GBool));
- }
- x[n] = x1;
- y[n] = y1;
- curve[n] = gFalse;
- ++n;
-}
-
-void GfxSubpath::curveTo(double x1, double y1, double x2, double y2,
- double x3, double y3) {
- if (n+3 > size) {
- size += 16;
- x = (double *)greallocn(x, size, sizeof(double));
- y = (double *)greallocn(y, size, sizeof(double));
- curve = (GBool *)greallocn(curve, size, sizeof(GBool));
- }
- x[n] = x1;
- y[n] = y1;
- x[n+1] = x2;
- y[n+1] = y2;
- x[n+2] = x3;
- y[n+2] = y3;
- curve[n] = curve[n+1] = gTrue;
- curve[n+2] = gFalse;
- n += 3;
-}
-
-void GfxSubpath::close() {
- if (x[n-1] != x[0] || y[n-1] != y[0]) {
- lineTo(x[0], y[0]);
- }
- closed = gTrue;
-}
-
-void GfxSubpath::offset(double dx, double dy) {
- int i;
-
- for (i = 0; i < n; ++i) {
- x[i] += dx;
- y[i] += dy;
- }
-}
-
-GfxPath::GfxPath() {
- justMoved = gFalse;
- size = 16;
- n = 0;
- firstX = firstY = 0;
- subpaths = (GfxSubpath **)gmallocn(size, sizeof(GfxSubpath *));
-}
-
-GfxPath::~GfxPath() {
- int i;
-
- for (i = 0; i < n; ++i)
- delete subpaths[i];
- gfree(subpaths);
-}
-
-// Used for copy().
-GfxPath::GfxPath(GBool justMoved1, double firstX1, double firstY1,
- GfxSubpath **subpaths1, int n1, int size1) {
- int i;
-
- justMoved = justMoved1;
- firstX = firstX1;
- firstY = firstY1;
- size = size1;
- n = n1;
- subpaths = (GfxSubpath **)gmallocn(size, sizeof(GfxSubpath *));
- for (i = 0; i < n; ++i)
- subpaths[i] = subpaths1[i]->copy();
-}
-
-void GfxPath::moveTo(double x, double y) {
- justMoved = gTrue;
- firstX = x;
- firstY = y;
-}
-
-void GfxPath::lineTo(double x, double y) {
- if (justMoved) {
- if (n >= size) {
- size += 16;
- subpaths = (GfxSubpath **)
- greallocn(subpaths, size, sizeof(GfxSubpath *));
- }
- subpaths[n] = new GfxSubpath(firstX, firstY);
- ++n;
- justMoved = gFalse;
- }
- subpaths[n-1]->lineTo(x, y);
-}
-
-void GfxPath::curveTo(double x1, double y1, double x2, double y2,
- double x3, double y3) {
- if (justMoved) {
- if (n >= size) {
- size += 16;
- subpaths = (GfxSubpath **)
- greallocn(subpaths, size, sizeof(GfxSubpath *));
- }
- subpaths[n] = new GfxSubpath(firstX, firstY);
- ++n;
- justMoved = gFalse;
- }
- subpaths[n-1]->curveTo(x1, y1, x2, y2, x3, y3);
-}
-
-void GfxPath::close() {
- // this is necessary to handle the pathological case of
- // moveto/closepath/clip, which defines an empty clipping region
- if (justMoved) {
- if (n >= size) {
- size += 16;
- subpaths = (GfxSubpath **)
- greallocn(subpaths, size, sizeof(GfxSubpath *));
- }
- subpaths[n] = new GfxSubpath(firstX, firstY);
- ++n;
- justMoved = gFalse;
- }
- subpaths[n-1]->close();
-}
-
-void GfxPath::append(GfxPath *path) {
- int i;
-
- if (n + path->n > size) {
- size = n + path->n;
- subpaths = (GfxSubpath **)
- greallocn(subpaths, size, sizeof(GfxSubpath *));
- }
- for (i = 0; i < path->n; ++i) {
- subpaths[n++] = path->subpaths[i]->copy();
- }
- justMoved = gFalse;
-}
-
-void GfxPath::offset(double dx, double dy) {
- int i;
-
- for (i = 0; i < n; ++i) {
- subpaths[i]->offset(dx, dy);
- }
-}
-
-//------------------------------------------------------------------------
-// GfxState
-//------------------------------------------------------------------------
-
-GfxState::GfxState(double hDPIA, double vDPIA, PDFRectangle *pageBox,
- int rotateA, GBool upsideDown) {
- double kx, ky;
-
- hDPI = hDPIA;
- vDPI = vDPIA;
- rotate = rotateA;
- px1 = pageBox->x1;
- py1 = pageBox->y1;
- px2 = pageBox->x2;
- py2 = pageBox->y2;
- kx = hDPI / 72.0;
- ky = vDPI / 72.0;
- if (rotate == 90) {
- ctm[0] = 0;
- ctm[1] = upsideDown ? ky : -ky;
- ctm[2] = kx;
- ctm[3] = 0;
- ctm[4] = -kx * py1;
- ctm[5] = ky * (upsideDown ? -px1 : px2);
- pageWidth = kx * (py2 - py1);
- pageHeight = ky * (px2 - px1);
- } else if (rotate == 180) {
- ctm[0] = -kx;
- ctm[1] = 0;
- ctm[2] = 0;
- ctm[3] = upsideDown ? ky : -ky;
- ctm[4] = kx * px2;
- ctm[5] = ky * (upsideDown ? -py1 : py2);
- pageWidth = kx * (px2 - px1);
- pageHeight = ky * (py2 - py1);
- } else if (rotate == 270) {
- ctm[0] = 0;
- ctm[1] = upsideDown ? -ky : ky;
- ctm[2] = -kx;
- ctm[3] = 0;
- ctm[4] = kx * py2;
- ctm[5] = ky * (upsideDown ? px2 : -px1);
- pageWidth = kx * (py2 - py1);
- pageHeight = ky * (px2 - px1);
- } else {
- ctm[0] = kx;
- ctm[1] = 0;
- ctm[2] = 0;
- ctm[3] = upsideDown ? -ky : ky;
- ctm[4] = -kx * px1;
- ctm[5] = ky * (upsideDown ? py2 : -py1);
- pageWidth = kx * (px2 - px1);
- pageHeight = ky * (py2 - py1);
- }
-
- fillColorSpace = new GfxDeviceGrayColorSpace();
- strokeColorSpace = new GfxDeviceGrayColorSpace();
- fillColor.c[0] = 0;
- strokeColor.c[0] = 0;
- fillPattern = NULL;
- strokePattern = NULL;
- blendMode = gfxBlendNormal;
- fillOpacity = 1;
- strokeOpacity = 1;
- fillOverprint = gFalse;
- strokeOverprint = gFalse;
- transfer[0] = transfer[1] = transfer[2] = transfer[3] = NULL;
-
- lineWidth = 1;
- lineDash = NULL;
- lineDashLength = 0;
- lineDashStart = 0;
- flatness = 1;
- lineJoin = 0;
- lineCap = 0;
- miterLimit = 10;
- strokeAdjust = gFalse;
-
- font = NULL;
- fontSize = 0;
- textMat[0] = 1; textMat[1] = 0;
- textMat[2] = 0; textMat[3] = 1;
- textMat[4] = 0; textMat[5] = 0;
- charSpace = 0;
- wordSpace = 0;
- horizScaling = 1;
- leading = 0;
- rise = 0;
- render = 0;
-
- path = new GfxPath();
- curX = curY = 0;
- lineX = lineY = 0;
-
- clipXMin = 0;
- clipYMin = 0;
- clipXMax = pageWidth;
- clipYMax = pageHeight;
-
- saved = NULL;
-}
-
-GfxState::~GfxState() {
- int i;
-
- if (fillColorSpace) {
- delete fillColorSpace;
- }
- if (strokeColorSpace) {
- delete strokeColorSpace;
- }
- if (fillPattern) {
- delete fillPattern;
- }
- if (strokePattern) {
- delete strokePattern;
- }
- for (i = 0; i < 4; ++i) {
- if (transfer[i]) {
- delete transfer[i];
- }
- }
- gfree(lineDash);
- if (path) {
- // this gets set to NULL by restore()
- delete path;
- }
- if (saved) {
- delete saved;
- }
-}
-
-// Used for copy();
-GfxState::GfxState(GfxState *state) {
- int i;
-
- memcpy(this, state, sizeof(GfxState));
- if (fillColorSpace) {
- fillColorSpace = state->fillColorSpace->copy();
- }
- if (strokeColorSpace) {
- strokeColorSpace = state->strokeColorSpace->copy();
- }
- if (fillPattern) {
- fillPattern = state->fillPattern->copy();
- }
- if (strokePattern) {
- strokePattern = state->strokePattern->copy();
- }
- for (i = 0; i < 4; ++i) {
- if (transfer[i]) {
- transfer[i] = state->transfer[i]->copy();
- }
- }
- if (lineDashLength > 0) {
- lineDash = (double *)gmallocn(lineDashLength, sizeof(double));
- memcpy(lineDash, state->lineDash, lineDashLength * sizeof(double));
- }
- saved = NULL;
-}
-
-void GfxState::setPath(GfxPath *pathA) {
- delete path;
- path = pathA;
-}
-
-void GfxState::getUserClipBBox(double *xMin, double *yMin,
- double *xMax, double *yMax) {
- double ictm[6];
- double xMin1, yMin1, xMax1, yMax1, det, tx, ty;
-
- // invert the CTM
- det = 1 / (ctm[0] * ctm[3] - ctm[1] * ctm[2]);
- ictm[0] = ctm[3] * det;
- ictm[1] = -ctm[1] * det;
- ictm[2] = -ctm[2] * det;
- ictm[3] = ctm[0] * det;
- ictm[4] = (ctm[2] * ctm[5] - ctm[3] * ctm[4]) * det;
- ictm[5] = (ctm[1] * ctm[4] - ctm[0] * ctm[5]) * det;
-
- // transform all four corners of the clip bbox; find the min and max
- // x and y values
- xMin1 = xMax1 = clipXMin * ictm[0] + clipYMin * ictm[2] + ictm[4];
- yMin1 = yMax1 = clipXMin * ictm[1] + clipYMin * ictm[3] + ictm[5];
- tx = clipXMin * ictm[0] + clipYMax * ictm[2] + ictm[4];
- ty = clipXMin * ictm[1] + clipYMax * ictm[3] + ictm[5];
- if (tx < xMin1) {
- xMin1 = tx;
- } else if (tx > xMax1) {
- xMax1 = tx;
- }
- if (ty < yMin1) {
- yMin1 = ty;
- } else if (ty > yMax1) {
- yMax1 = ty;
- }
- tx = clipXMax * ictm[0] + clipYMin * ictm[2] + ictm[4];
- ty = clipXMax * ictm[1] + clipYMin * ictm[3] + ictm[5];
- if (tx < xMin1) {
- xMin1 = tx;
- } else if (tx > xMax1) {
- xMax1 = tx;
- }
- if (ty < yMin1) {
- yMin1 = ty;
- } else if (ty > yMax1) {
- yMax1 = ty;
- }
- tx = clipXMax * ictm[0] + clipYMax * ictm[2] + ictm[4];
- ty = clipXMax * ictm[1] + clipYMax * ictm[3] + ictm[5];
- if (tx < xMin1) {
- xMin1 = tx;
- } else if (tx > xMax1) {
- xMax1 = tx;
- }
- if (ty < yMin1) {
- yMin1 = ty;
- } else if (ty > yMax1) {
- yMax1 = ty;
- }
-
- *xMin = xMin1;
- *yMin = yMin1;
- *xMax = xMax1;
- *yMax = yMax1;
-}
-
-double GfxState::transformWidth(double w) {
- double x, y;
-
- x = ctm[0] + ctm[2];
- y = ctm[1] + ctm[3];
- return w * sqrt(0.5 * (x * x + y * y));
-}
-
-double GfxState::getTransformedFontSize() {
- double x1, y1, x2, y2;
-
- x1 = textMat[2] * fontSize;
- y1 = textMat[3] * fontSize;
- x2 = ctm[0] * x1 + ctm[2] * y1;
- y2 = ctm[1] * x1 + ctm[3] * y1;
- return sqrt(x2 * x2 + y2 * y2);
-}
-
-void GfxState::getFontTransMat(double *m11, double *m12,
- double *m21, double *m22) {
- *m11 = (textMat[0] * ctm[0] + textMat[1] * ctm[2]) * fontSize;
- *m12 = (textMat[0] * ctm[1] + textMat[1] * ctm[3]) * fontSize;
- *m21 = (textMat[2] * ctm[0] + textMat[3] * ctm[2]) * fontSize;
- *m22 = (textMat[2] * ctm[1] + textMat[3] * ctm[3]) * fontSize;
-}
-
-void GfxState::setCTM(double a, double b, double c,
- double d, double e, double f) {
- int i;
-
- ctm[0] = a;
- ctm[1] = b;
- ctm[2] = c;
- ctm[3] = d;
- ctm[4] = e;
- ctm[5] = f;
-
- // avoid FP exceptions on badly messed up PDF files
- for (i = 0; i < 6; ++i) {
- if (ctm[i] > 1e10) {
- ctm[i] = 1e10;
- } else if (ctm[i] < -1e10) {
- ctm[i] = -1e10;
- }
- }
-}
-
-void GfxState::concatCTM(double a, double b, double c,
- double d, double e, double f) {
- double a1 = ctm[0];
- double b1 = ctm[1];
- double c1 = ctm[2];
- double d1 = ctm[3];
- int i;
-
- ctm[0] = a * a1 + b * c1;
- ctm[1] = a * b1 + b * d1;
- ctm[2] = c * a1 + d * c1;
- ctm[3] = c * b1 + d * d1;
- ctm[4] = e * a1 + f * c1 + ctm[4];
- ctm[5] = e * b1 + f * d1 + ctm[5];
-
- // avoid FP exceptions on badly messed up PDF files
- for (i = 0; i < 6; ++i) {
- if (ctm[i] > 1e10) {
- ctm[i] = 1e10;
- } else if (ctm[i] < -1e10) {
- ctm[i] = -1e10;
- }
- }
-}
-
-void GfxState::shiftCTM(double tx, double ty) {
- ctm[4] += tx;
- ctm[5] += ty;
- clipXMin += tx;
- clipYMin += ty;
- clipXMax += tx;
- clipYMax += ty;
-}
-
-void GfxState::setFillColorSpace(GfxColorSpace *colorSpace) {
- if (fillColorSpace) {
- delete fillColorSpace;
- }
- fillColorSpace = colorSpace;
-}
-
-void GfxState::setStrokeColorSpace(GfxColorSpace *colorSpace) {
- if (strokeColorSpace) {
- delete strokeColorSpace;
- }
- strokeColorSpace = colorSpace;
-}
-
-void GfxState::setFillPattern(GfxPattern *pattern) {
- if (fillPattern) {
- delete fillPattern;
- }
- fillPattern = pattern;
-}
-
-void GfxState::setStrokePattern(GfxPattern *pattern) {
- if (strokePattern) {
- delete strokePattern;
- }
- strokePattern = pattern;
-}
-
-void GfxState::setTransfer(Function **funcs) {
- int i;
-
- for (i = 0; i < 4; ++i) {
- if (transfer[i]) {
- delete transfer[i];
- }
- transfer[i] = funcs[i];
- }
-}
-
-void GfxState::setLineDash(double *dash, int length, double start) {
- if (lineDash)
- gfree(lineDash);
- lineDash = dash;
- lineDashLength = length;
- lineDashStart = start;
-}
-
-void GfxState::clearPath() {
- delete path;
- path = new GfxPath();
-}
-
-void GfxState::clip() {
- double xMin, yMin, xMax, yMax, x, y;
- GfxSubpath *subpath;
- int i, j;
-
- xMin = xMax = yMin = yMax = 0; // make gcc happy
- for (i = 0; i < path->getNumSubpaths(); ++i) {
- subpath = path->getSubpath(i);
- for (j = 0; j < subpath->getNumPoints(); ++j) {
- transform(subpath->getX(j), subpath->getY(j), &x, &y);
- if (i == 0 && j == 0) {
- xMin = xMax = x;
- yMin = yMax = y;
- } else {
- if (x < xMin) {
- xMin = x;
- } else if (x > xMax) {
- xMax = x;
- }
- if (y < yMin) {
- yMin = y;
- } else if (y > yMax) {
- yMax = y;
- }
- }
- }
- }
- if (xMin > clipXMin) {
- clipXMin = xMin;
- }
- if (yMin > clipYMin) {
- clipYMin = yMin;
- }
- if (xMax < clipXMax) {
- clipXMax = xMax;
- }
- if (yMax < clipYMax) {
- clipYMax = yMax;
- }
-}
-
-void GfxState::clipToStrokePath() {
- double xMin, yMin, xMax, yMax, x, y, t0, t1;
- GfxSubpath *subpath;
- int i, j;
-
- xMin = xMax = yMin = yMax = 0; // make gcc happy
- for (i = 0; i < path->getNumSubpaths(); ++i) {
- subpath = path->getSubpath(i);
- for (j = 0; j < subpath->getNumPoints(); ++j) {
- transform(subpath->getX(j), subpath->getY(j), &x, &y);
- if (i == 0 && j == 0) {
- xMin = xMax = x;
- yMin = yMax = y;
- } else {
- if (x < xMin) {
- xMin = x;
- } else if (x > xMax) {
- xMax = x;
- }
- if (y < yMin) {
- yMin = y;
- } else if (y > yMax) {
- yMax = y;
- }
- }
- }
- }
-
- // allow for the line width
- //~ miter joins can extend farther than this
- t0 = fabs(ctm[0]);
- t1 = fabs(ctm[2]);
- if (t0 > t1) {
- xMin -= 0.5 * lineWidth * t0;
- xMax += 0.5 * lineWidth * t0;
- } else {
- xMin -= 0.5 * lineWidth * t1;
- xMax += 0.5 * lineWidth * t1;
- }
- t0 = fabs(ctm[0]);
- t1 = fabs(ctm[3]);
- if (t0 > t1) {
- yMin -= 0.5 * lineWidth * t0;
- yMax += 0.5 * lineWidth * t0;
- } else {
- yMin -= 0.5 * lineWidth * t1;
- yMax += 0.5 * lineWidth * t1;
- }
-
- if (xMin > clipXMin) {
- clipXMin = xMin;
- }
- if (yMin > clipYMin) {
- clipYMin = yMin;
- }
- if (xMax < clipXMax) {
- clipXMax = xMax;
- }
- if (yMax < clipYMax) {
- clipYMax = yMax;
- }
-}
-
-void GfxState::textShift(double tx, double ty) {
- double dx, dy;
-
- textTransformDelta(tx, ty, &dx, &dy);
- curX += dx;
- curY += dy;
-}
-
-void GfxState::shift(double dx, double dy) {
- curX += dx;
- curY += dy;
-}
-
-GfxState *GfxState::save() {
- GfxState *newState;
-
- newState = copy();
- newState->saved = this;
- return newState;
-}
-
-GfxState *GfxState::restore() {
- GfxState *oldState;
-
- if (saved) {
- oldState = saved;
-
- // these attributes aren't saved/restored by the q/Q operators
- oldState->path = path;
- oldState->curX = curX;
- oldState->curY = curY;
- oldState->lineX = lineX;
- oldState->lineY = lineY;
-
- path = NULL;
- saved = NULL;
- delete this;
-
- } else {
- oldState = this;
- }
-
- return oldState;
-}
-
-GBool GfxState::parseBlendMode(Object *obj, GfxBlendMode *mode) {
- Object obj2;
- int i, j;
-
- if (obj->isName()) {
- for (i = 0; i < nGfxBlendModeNames; ++i) {
- if (!strcmp(obj->getName(), gfxBlendModeNames[i].name)) {
- *mode = gfxBlendModeNames[i].mode;
- return gTrue;
- }
- }
- return gFalse;
- } else if (obj->isArray()) {
- for (i = 0; i < obj->arrayGetLength(); ++i) {
- obj->arrayGet(i, &obj2);
- if (!obj2.isName()) {
- obj2.free();
- return gFalse;
- }
- for (j = 0; j < nGfxBlendModeNames; ++j) {
- if (!strcmp(obj2.getName(), gfxBlendModeNames[j].name)) {
- obj2.free();
- *mode = gfxBlendModeNames[j].mode;
- return gTrue;
- }
- }
- obj2.free();
- }
- *mode = gfxBlendNormal;
- return gTrue;
- } else {
- return gFalse;
- }
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-05 14:47:21 +0000