summaryrefslogtreecommitdiffstats
path: root/filters/kword/pdf/xpdf/xpdf/GfxState.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'filters/kword/pdf/xpdf/xpdf/GfxState.cpp')
-rw-r--r--filters/kword/pdf/xpdf/xpdf/GfxState.cpp2338
1 files changed, 2338 insertions, 0 deletions
diff --git a/filters/kword/pdf/xpdf/xpdf/GfxState.cpp b/filters/kword/pdf/xpdf/xpdf/GfxState.cpp
new file mode 100644
index 000000000..866e692f1
--- /dev/null
+++ b/filters/kword/pdf/xpdf/xpdf/GfxState.cpp
@@ -0,0 +1,2338 @@
+//========================================================================
+//
+// GfxState.cpp
+//
+// Copyright 1996-2002 Glyph & Cog, LLC
+//
+//========================================================================
+
+#include <aconf.h>
+
+#ifdef USE_GCC_PRAGMAS
+#pragma implementation
+#endif
+
+#include <stddef.h>
+#include <math.h>
+#include <string.h> // for memcpy()
+#include "gmem.h"
+#include "Error.h"
+#include "Object.h"
+#include "Array.h"
+#include "Page.h"
+#include "GfxState.h"
+
+//------------------------------------------------------------------------
+
+static inline double clip01(double x) {
+ return (x < 0) ? 0 : ((x > 1) ? 1 : x);
+}
+
+//------------------------------------------------------------------------
+// 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 '%s'", csObj->getName());
+ }
+ obj1.free();
+ } else {
+ error(-1, "Bad color space - expected name or array");
+ }
+ return cs;
+}
+
+void GfxColorSpace::getDefaultRanges(double *decodeLow, double *decodeRange,
+ int /*maxImgPixel*/) const {
+ int i;
+
+ for (i = 0; i < getNComps(); ++i) {
+ decodeLow[i] = 0;
+ decodeRange[i] = 1;
+ }
+}
+
+//------------------------------------------------------------------------
+// GfxDeviceGrayColorSpace
+//------------------------------------------------------------------------
+
+GfxDeviceGrayColorSpace::GfxDeviceGrayColorSpace() {
+}
+
+GfxDeviceGrayColorSpace::~GfxDeviceGrayColorSpace() {
+}
+
+GfxColorSpace *GfxDeviceGrayColorSpace::copy() const {
+ return new GfxDeviceGrayColorSpace();
+}
+
+void GfxDeviceGrayColorSpace::getGray(const GfxColor *color, double *gray) const {
+ *gray = clip01(color->c[0]);
+}
+
+void GfxDeviceGrayColorSpace::getRGB(const GfxColor *color, GfxRGB *rgb) const {
+ rgb->r = rgb->g = rgb->b = clip01(color->c[0]);
+}
+
+void GfxDeviceGrayColorSpace::getCMYK(const GfxColor *color, GfxCMYK *cmyk) const {
+ cmyk->c = cmyk->m = cmyk->y = 0;
+ cmyk->k = clip01(1 - color->c[0]);
+}
+
+//------------------------------------------------------------------------
+// GfxCalGrayColorSpace
+//------------------------------------------------------------------------
+
+GfxCalGrayColorSpace::GfxCalGrayColorSpace() {
+ whiteX = whiteY = whiteZ = 1;
+ blackX = blackY = blackZ = 0;
+ gamma = 1;
+}
+
+GfxCalGrayColorSpace::~GfxCalGrayColorSpace() {
+}
+
+GfxColorSpace *GfxCalGrayColorSpace::copy() const {
+ 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(const GfxColor *color, double *gray) const {
+ *gray = clip01(color->c[0]);
+}
+
+void GfxCalGrayColorSpace::getRGB(const GfxColor *color, GfxRGB *rgb) const {
+ rgb->r = rgb->g = rgb->b = clip01(color->c[0]);
+}
+
+void GfxCalGrayColorSpace::getCMYK(const GfxColor *color, GfxCMYK *cmyk) const {
+ cmyk->c = cmyk->m = cmyk->y = 0;
+ cmyk->k = clip01(1 - color->c[0]);
+}
+
+//------------------------------------------------------------------------
+// GfxDeviceRGBColorSpace
+//------------------------------------------------------------------------
+
+GfxDeviceRGBColorSpace::GfxDeviceRGBColorSpace() {
+}
+
+GfxDeviceRGBColorSpace::~GfxDeviceRGBColorSpace() {
+}
+
+GfxColorSpace *GfxDeviceRGBColorSpace::copy() const {
+ return new GfxDeviceRGBColorSpace();
+}
+
+void GfxDeviceRGBColorSpace::getGray(const GfxColor *color, double *gray) const {
+ *gray = clip01(0.299 * color->c[0] +
+ 0.587 * color->c[1] +
+ 0.114 * color->c[2]);
+}
+
+void GfxDeviceRGBColorSpace::getRGB(const GfxColor *color, GfxRGB *rgb) const {
+ rgb->r = clip01(color->c[0]);
+ rgb->g = clip01(color->c[1]);
+ rgb->b = clip01(color->c[2]);
+}
+
+void GfxDeviceRGBColorSpace::getCMYK(const GfxColor *color, GfxCMYK *cmyk) const {
+ double c, m, y, k;
+
+ c = clip01(1 - color->c[0]);
+ m = clip01(1 - color->c[1]);
+ y = clip01(1 - 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;
+}
+
+//------------------------------------------------------------------------
+// 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() const {
+ 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(const GfxColor *color, double *gray) const {
+ *gray = clip01(0.299 * color->c[0] +
+ 0.587 * color->c[1] +
+ 0.114 * color->c[2]);
+}
+
+void GfxCalRGBColorSpace::getRGB(const GfxColor *color, GfxRGB *rgb) const {
+ rgb->r = clip01(color->c[0]);
+ rgb->g = clip01(color->c[1]);
+ rgb->b = clip01(color->c[2]);
+}
+
+void GfxCalRGBColorSpace::getCMYK(const GfxColor *color, GfxCMYK *cmyk) const {
+ double c, m, y, k;
+
+ c = clip01(1 - color->c[0]);
+ m = clip01(1 - color->c[1]);
+ y = clip01(1 - 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;
+}
+
+//------------------------------------------------------------------------
+// GfxDeviceCMYKColorSpace
+//------------------------------------------------------------------------
+
+GfxDeviceCMYKColorSpace::GfxDeviceCMYKColorSpace() {
+}
+
+GfxDeviceCMYKColorSpace::~GfxDeviceCMYKColorSpace() {
+}
+
+GfxColorSpace *GfxDeviceCMYKColorSpace::copy() const {
+ return new GfxDeviceCMYKColorSpace();
+}
+
+void GfxDeviceCMYKColorSpace::getGray(const GfxColor *color, double *gray) const {
+ *gray = clip01(1 - color->c[3]
+ - 0.299 * color->c[0]
+ - 0.587 * color->c[1]
+ - 0.114 * color->c[2]);
+}
+
+void GfxDeviceCMYKColorSpace::getRGB(const GfxColor *color, GfxRGB *rgb) const {
+ double c, m, y, aw, ac, am, ay, ar, ag, ab;
+
+ c = clip01(color->c[0] + color->c[3]);
+ m = clip01(color->c[1] + color->c[3]);
+ y = clip01(color->c[2] + color->c[3]);
+ aw = (1-c) * (1-m) * (1-y);
+ ac = c * (1-m) * (1-y);
+ am = (1-c) * m * (1-y);
+ ay = (1-c) * (1-m) * y;
+ ar = (1-c) * m * y;
+ ag = c * (1-m) * y;
+ ab = c * m * (1-y);
+ rgb->r = clip01(aw + 0.9137*am + 0.9961*ay + 0.9882*ar);
+ rgb->g = clip01(aw + 0.6196*ac + ay + 0.5176*ag);
+ rgb->b = clip01(aw + 0.7804*ac + 0.5412*am + 0.0667*ar + 0.2118*ag +
+ 0.4863*ab);
+}
+
+void GfxDeviceCMYKColorSpace::getCMYK(const GfxColor *color, GfxCMYK *cmyk) const {
+ cmyk->c = clip01(color->c[0]);
+ cmyk->m = clip01(color->c[1]);
+ cmyk->y = clip01(color->c[2]);
+ cmyk->k = clip01(color->c[3]);
+}
+
+//------------------------------------------------------------------------
+// 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() const {
+ 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(const GfxColor *color, double *gray) const {
+ GfxRGB rgb;
+
+ getRGB(color, &rgb);
+ *gray = clip01(0.299 * rgb.r +
+ 0.587 * rgb.g +
+ 0.114 * rgb.b);
+}
+
+void GfxLabColorSpace::getRGB(const GfxColor *color, GfxRGB *rgb) const {
+ double X, Y, Z;
+ double t1, t2;
+ double r, g, b;
+
+ // convert L*a*b* to CIE 1931 XYZ color space
+ t1 = (color->c[0] + 16) / 116;
+ t2 = t1 + 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 - 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 = pow(clip01(r * kr), 0.5);
+ rgb->g = pow(clip01(g * kg), 0.5);
+ rgb->b = pow(clip01(b * kb), 0.5);
+}
+
+void GfxLabColorSpace::getCMYK(const GfxColor *color, GfxCMYK *cmyk) const {
+ GfxRGB rgb;
+ double c, m, y, k;
+
+ getRGB(color, &rgb);
+ c = clip01(1 - rgb.r);
+ m = clip01(1 - rgb.g);
+ y = clip01(1 - 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::getDefaultRanges(double *decodeLow, double *decodeRange,
+ int /*maxImgPixel*/) const {
+ 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,
+ const 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() const {
+ 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(const GfxColor *color, double *gray) const {
+ alt->getGray(color, gray);
+}
+
+void GfxICCBasedColorSpace::getRGB(const GfxColor *color, GfxRGB *rgb) const {
+ alt->getRGB(color, rgb);
+}
+
+void GfxICCBasedColorSpace::getCMYK(const GfxColor *color, GfxCMYK *cmyk) const {
+ alt->getCMYK(color, cmyk);
+}
+
+void GfxICCBasedColorSpace::getDefaultRanges(double *decodeLow,
+ double *decodeRange,
+ int /*maxImgPixel*/) const {
+ int i;
+
+ for (i = 0; i < nComps; ++i) {
+ decodeLow[i] = rangeMin[i];
+ decodeRange[i] = rangeMax[i] - rangeMin[i];
+ }
+}
+
+//------------------------------------------------------------------------
+// GfxIndexedColorSpace
+//------------------------------------------------------------------------
+
+GfxIndexedColorSpace::GfxIndexedColorSpace(GfxColorSpace *baseA,
+ int indexHighA) {
+ base = baseA;
+ indexHigh = indexHighA;
+ lookup = (Guchar *)gmalloc((indexHigh + 1) * base->getNComps() *
+ sizeof(Guchar));
+}
+
+GfxIndexedColorSpace::~GfxIndexedColorSpace() {
+ delete base;
+ gfree(lookup);
+}
+
+GfxColorSpace *GfxIndexedColorSpace::copy() const {
+ 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)");
+ goto err2;
+ }
+ indexHighA = obj1.getInt();
+ 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;
+}
+
+void GfxIndexedColorSpace::getGray(const GfxColor *color, double *gray) const {
+ Guchar *p;
+ GfxColor color2;
+ double low[gfxColorMaxComps], range[gfxColorMaxComps];
+ int n, i;
+
+ n = base->getNComps();
+ base->getDefaultRanges(low, range, indexHigh);
+ p = &lookup[(int)(color->c[0] + 0.5) * n];
+ for (i = 0; i < n; ++i) {
+ color2.c[i] = low[i] + (p[i] / 255.0) * range[i];
+ }
+ base->getGray(&color2, gray);
+}
+
+void GfxIndexedColorSpace::getRGB(const GfxColor *color, GfxRGB *rgb) const {
+ Guchar *p;
+ GfxColor color2;
+ double low[gfxColorMaxComps], range[gfxColorMaxComps];
+ int n, i;
+
+ n = base->getNComps();
+ base->getDefaultRanges(low, range, indexHigh);
+ p = &lookup[(int)(color->c[0] + 0.5) * n];
+ for (i = 0; i < n; ++i) {
+ color2.c[i] = low[i] + (p[i] / 255.0) * range[i];
+ }
+ base->getRGB(&color2, rgb);
+}
+
+void GfxIndexedColorSpace::getCMYK(const GfxColor *color, GfxCMYK *cmyk) const {
+ Guchar *p;
+ GfxColor color2;
+ double low[gfxColorMaxComps], range[gfxColorMaxComps];
+ int n, i;
+
+ n = base->getNComps();
+ base->getDefaultRanges(low, range, indexHigh);
+ p = &lookup[(int)(color->c[0] + 0.5) * n];
+ for (i = 0; i < n; ++i) {
+ color2.c[i] = low[i] + (p[i] / 255.0) * range[i];
+ }
+ base->getCMYK(&color2, cmyk);
+}
+
+void GfxIndexedColorSpace::getDefaultRanges(double *decodeLow,
+ double *decodeRange,
+ int maxImgPixel) const {
+ decodeLow[0] = 0;
+ decodeRange[0] = maxImgPixel;
+}
+
+//------------------------------------------------------------------------
+// GfxSeparationColorSpace
+//------------------------------------------------------------------------
+
+GfxSeparationColorSpace::GfxSeparationColorSpace(GString *nameA,
+ GfxColorSpace *altA,
+ Function *funcA) {
+ name = nameA;
+ alt = altA;
+ func = funcA;
+}
+
+GfxSeparationColorSpace::~GfxSeparationColorSpace() {
+ delete name;
+ delete alt;
+ delete func;
+}
+
+GfxColorSpace *GfxSeparationColorSpace::copy() const {
+ 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(const GfxColor *color, double *gray) const {
+ GfxColor color2;
+
+ func->transform(color->c, color2.c);
+ alt->getGray(&color2, gray);
+}
+
+void GfxSeparationColorSpace::getRGB(const GfxColor *color, GfxRGB *rgb) const {
+ GfxColor color2;
+
+ func->transform(color->c, color2.c);
+ alt->getRGB(&color2, rgb);
+}
+
+void GfxSeparationColorSpace::getCMYK(const GfxColor *color, GfxCMYK *cmyk) const {
+ GfxColor color2;
+
+ func->transform(color->c, color2.c);
+ alt->getCMYK(&color2, cmyk);
+}
+
+//------------------------------------------------------------------------
+// GfxDeviceNColorSpace
+//------------------------------------------------------------------------
+
+GfxDeviceNColorSpace::GfxDeviceNColorSpace(int nCompsA,
+ GfxColorSpace *altA,
+ Function *funcA) {
+ nComps = nCompsA;
+ alt = altA;
+ func = funcA;
+}
+
+GfxDeviceNColorSpace::~GfxDeviceNColorSpace() {
+ int i;
+
+ for (i = 0; i < nComps; ++i) {
+ delete names[i];
+ }
+ delete alt;
+ delete func;
+}
+
+GfxColorSpace *GfxDeviceNColorSpace::copy() const {
+ GfxDeviceNColorSpace *cs;
+ int i;
+
+ cs = new GfxDeviceNColorSpace(nComps, alt->copy(), func->copy());
+ for (i = 0; i < nComps; ++i) {
+ cs->names[i] = names[i]->copy();
+ }
+ 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);
+ for (i = 0; i < nCompsA; ++i) {
+ cs->names[i] = namesA[i];
+ }
+ return cs;
+
+ err4:
+ delete altA;
+ err3:
+ for (i = 0; i < nCompsA; ++i) {
+ delete namesA[i];
+ }
+ err2:
+ obj1.free();
+ err1:
+ return NULL;
+}
+
+void GfxDeviceNColorSpace::getGray(const GfxColor *color, double *gray) const {
+ GfxColor color2;
+
+ func->transform(color->c, color2.c);
+ alt->getGray(&color2, gray);
+}
+
+void GfxDeviceNColorSpace::getRGB(const GfxColor *color, GfxRGB *rgb) const {
+ GfxColor color2;
+
+ func->transform(color->c, color2.c);
+ alt->getRGB(&color2, rgb);
+}
+
+void GfxDeviceNColorSpace::getCMYK(const GfxColor *color, GfxCMYK *cmyk) const {
+ GfxColor color2;
+
+ func->transform(color->c, color2.c);
+ alt->getCMYK(&color2, cmyk);
+}
+
+//------------------------------------------------------------------------
+// GfxPatternColorSpace
+//------------------------------------------------------------------------
+
+GfxPatternColorSpace::GfxPatternColorSpace(GfxColorSpace *underA) {
+ under = underA;
+}
+
+GfxPatternColorSpace::~GfxPatternColorSpace() {
+ if (under) {
+ delete under;
+ }
+}
+
+GfxColorSpace *GfxPatternColorSpace::copy() const {
+ 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(const GfxColor */*color*/, double *gray) const {
+ *gray = 0;
+}
+
+void GfxPatternColorSpace::getRGB(const GfxColor */*color*/, GfxRGB *rgb) const {
+ rgb->r = rgb->g = rgb->b = 0;
+}
+
+void GfxPatternColorSpace::getCMYK(const GfxColor */*color*/, GfxCMYK *cmyk) const {
+ cmyk->c = cmyk->m = cmyk->y = 0;
+ cmyk->k = 1;
+}
+
+//------------------------------------------------------------------------
+// Pattern
+//------------------------------------------------------------------------
+
+GfxPattern::GfxPattern(int typeA) {
+ type = typeA;
+}
+
+GfxPattern::~GfxPattern() {
+}
+
+GfxPattern *GfxPattern::parse(Object *obj) {
+ GfxPattern *pattern;
+ Dict *dict;
+ Object obj1;
+
+ pattern = NULL;
+ if (obj->isStream()) {
+ dict = obj->streamGetDict();
+ dict->lookup("PatternType", &obj1);
+ if (obj1.isInt() && obj1.getInt() == 1) {
+ pattern = new GfxTilingPattern(dict, obj);
+ }
+ obj1.free();
+ }
+ return pattern;
+}
+
+//------------------------------------------------------------------------
+// GfxTilingPattern
+//------------------------------------------------------------------------
+
+GfxTilingPattern::GfxTilingPattern(Dict *streamDict, Object *stream):
+ GfxPattern(1)
+{
+ Object obj1, obj2;
+ int i;
+
+ if (streamDict->lookup("PaintType", &obj1)->isInt()) {
+ paintType = obj1.getInt();
+ } else {
+ paintType = 1;
+ error(-1, "Invalid or missing PaintType in pattern");
+ }
+ obj1.free();
+ if (streamDict->lookup("TilingType", &obj1)->isInt()) {
+ tilingType = obj1.getInt();
+ } else {
+ tilingType = 1;
+ error(-1, "Invalid or missing TilingType in pattern");
+ }
+ obj1.free();
+ bbox[0] = bbox[1] = 0;
+ bbox[2] = bbox[3] = 1;
+ if (streamDict->lookup("BBox", &obj1)->isArray() &&
+ obj1.arrayGetLength() == 4) {
+ for (i = 0; i < 4; ++i) {
+ if (obj1.arrayGet(i, &obj2)->isNum()) {
+ bbox[i] = obj2.getNum();
+ }
+ obj2.free();
+ }
+ } else {
+ error(-1, "Invalid or missing BBox in pattern");
+ }
+ obj1.free();
+ if (streamDict->lookup("XStep", &obj1)->isNum()) {
+ xStep = obj1.getNum();
+ } else {
+ xStep = 1;
+ error(-1, "Invalid or missing XStep in pattern");
+ }
+ obj1.free();
+ if (streamDict->lookup("YStep", &obj1)->isNum()) {
+ yStep = obj1.getNum();
+ } else {
+ yStep = 1;
+ error(-1, "Invalid or missing YStep in pattern");
+ }
+ obj1.free();
+ if (!streamDict->lookup("Resources", &resDict)->isDict()) {
+ resDict.free();
+ resDict.initNull();
+ error(-1, "Invalid or missing Resources in pattern");
+ }
+ matrix[0] = 1; matrix[1] = 0;
+ matrix[2] = 0; matrix[3] = 1;
+ matrix[4] = 0; matrix[5] = 0;
+ if (streamDict->lookup("Matrix", &obj1)->isArray() &&
+ obj1.arrayGetLength() == 6) {
+ for (i = 0; i < 6; ++i) {
+ if (obj1.arrayGet(i, &obj2)->isNum()) {
+ matrix[i] = obj2.getNum();
+ }
+ obj2.free();
+ }
+ }
+ obj1.free();
+ stream->copy(&contentStream);
+}
+
+GfxTilingPattern::~GfxTilingPattern() {
+ resDict.free();
+ contentStream.free();
+}
+
+GfxPattern *GfxTilingPattern::copy() {
+ return new GfxTilingPattern(this);
+}
+
+GfxTilingPattern::GfxTilingPattern(GfxTilingPattern *pat):
+ GfxPattern(1)
+{
+ memcpy(this, pat, sizeof(GfxTilingPattern));
+ pat->resDict.copy(&resDict);
+ pat->contentStream.copy(&contentStream);
+}
+
+//------------------------------------------------------------------------
+// GfxShading
+//------------------------------------------------------------------------
+
+GfxShading::GfxShading() {
+}
+
+GfxShading::~GfxShading() {
+ delete colorSpace;
+}
+
+GfxShading *GfxShading::parse(Object *obj) {
+ GfxShading *shading;
+ int typeA;
+ GfxColorSpace *colorSpaceA;
+ GfxColor backgroundA;
+ GBool hasBackgroundA;
+ double xMinA, yMinA, xMaxA, yMaxA;
+ GBool hasBBoxA;
+ Object obj1, obj2;
+ int i;
+
+ shading = NULL;
+ if (obj->isDict()) {
+
+ if (!obj->dictLookup("ShadingType", &obj1)->isInt()) {
+ error(-1, "Invalid ShadingType in shading dictionary");
+ obj1.free();
+ goto err1;
+ }
+ typeA = obj1.getInt();
+ obj1.free();
+
+ obj->dictLookup("ColorSpace", &obj1);
+ if (!(colorSpaceA = GfxColorSpace::parse(&obj1))) {
+ error(-1, "Bad color space in shading dictionary");
+ obj1.free();
+ goto err1;
+ }
+ obj1.free();
+
+ for (i = 0; i < gfxColorMaxComps; ++i) {
+ backgroundA.c[i] = 0;
+ }
+ hasBackgroundA = gFalse;
+ if (obj->dictLookup("Background", &obj1)->isArray()) {
+ if (obj1.arrayGetLength() == colorSpaceA->getNComps()) {
+ hasBackgroundA = gTrue;
+ for (i = 0; i < colorSpaceA->getNComps(); ++i) {
+ backgroundA.c[i] = obj1.arrayGet(i, &obj2)->getNum();
+ obj2.free();
+ }
+ } else {
+ error(-1, "Bad Background in shading dictionary");
+ }
+ }
+ obj1.free();
+
+ xMinA = yMinA = xMaxA = yMaxA = 0;
+ hasBBoxA = gFalse;
+ if (obj->dictLookup("BBox", &obj1)->isArray()) {
+ if (obj1.arrayGetLength() == 4) {
+ hasBBoxA = gTrue;
+ xMinA = obj1.arrayGet(0, &obj2)->getNum();
+ obj2.free();
+ yMinA = obj1.arrayGet(1, &obj2)->getNum();
+ obj2.free();
+ xMaxA = obj1.arrayGet(2, &obj2)->getNum();
+ obj2.free();
+ yMaxA = obj1.arrayGet(3, &obj2)->getNum();
+ obj2.free();
+ } else {
+ error(-1, "Bad BBox in shading dictionary");
+ }
+ }
+ obj1.free();
+
+ switch (typeA) {
+ case 2:
+ shading = GfxAxialShading::parse(obj->getDict());
+ break;
+ case 3:
+ shading = GfxRadialShading::parse(obj->getDict());
+ break;
+ default:
+ error(-1, "Unimplemented shading type %d", typeA);
+ goto err1;
+ }
+
+ if (shading) {
+ shading->type = typeA;
+ shading->colorSpace = colorSpaceA;
+ shading->background = backgroundA;
+ shading->hasBackground = hasBackgroundA;
+ shading->xMin = xMinA;
+ shading->yMin = yMinA;
+ shading->xMax = xMaxA;
+ shading->yMax = yMaxA;
+ shading->hasBBox = hasBBoxA;
+ } else {
+ delete colorSpaceA;
+ }
+ }
+
+ return shading;
+
+ err1:
+ return NULL;
+}
+
+//------------------------------------------------------------------------
+// GfxAxialShading
+//------------------------------------------------------------------------
+
+GfxAxialShading::GfxAxialShading(double x0A, double y0A,
+ double x1A, double y1A,
+ double t0A, double t1A,
+ Function **funcsA, int nFuncsA,
+ GBool extend0A, GBool extend1A) {
+ 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() {
+ int i;
+
+ for (i = 0; i < nFuncs; ++i) {
+ delete funcs[i];
+ }
+}
+
+GfxAxialShading *GfxAxialShading::parse(Dict *dict) {
+ 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();
+ 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();
+
+ return new GfxAxialShading(x0A, y0A, x1A, y1A, t0A, t1A,
+ funcsA, nFuncsA, extend0A, extend1A);
+
+ err1:
+ return NULL;
+}
+
+void GfxAxialShading::getColor(double t, GfxColor *color) {
+ int i;
+
+ for (i = 0; i < nFuncs; ++i) {
+ funcs[i]->transform(&t, &color->c[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) {
+ 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() {
+ int i;
+
+ for (i = 0; i < nFuncs; ++i) {
+ delete funcs[i];
+ }
+}
+
+GfxRadialShading *GfxRadialShading::parse(Dict *dict) {
+ 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();
+ 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();
+
+ return new GfxRadialShading(x0A, y0A, r0A, x1A, y1A, r1A, t0A, t1A,
+ funcsA, nFuncsA, extend0A, extend1A);
+
+ err1:
+ return NULL;
+}
+
+void GfxRadialShading::getColor(double t, GfxColor *color) {
+ int i;
+
+ for (i = 0; i < nFuncs; ++i) {
+ funcs[i]->transform(&t, &color->c[i]);
+ }
+}
+
+//------------------------------------------------------------------------
+// GfxImageColorMap
+//------------------------------------------------------------------------
+
+GfxImageColorMap::GfxImageColorMap(int bitsA, Object *decode,
+ GfxColorSpace *colorSpaceA) {
+ GfxIndexedColorSpace *indexedCS;
+ GfxSeparationColorSpace *sepCS;
+ int maxPixel, indexHigh;
+ const Guchar *lookup2;
+ const 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;
+
+ // 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();
+ lookup = (double *)gmalloc((indexHigh + 1) * nComps2 * sizeof(double));
+ lookup2 = indexedCS->getLookup();
+ colorSpace2->getDefaultRanges(x, y, indexHigh);
+ for (i = 0; i <= indexHigh; ++i) {
+ j = (int)(decodeLow[0] + (i * decodeRange[0]) / maxPixel + 0.5);
+ for (k = 0; k < nComps2; ++k) {
+ lookup[j*nComps2 + k] = x[k] + (lookup2[i*nComps2 + k] / 255.0) * y[k];
+ }
+ }
+ } else if (colorSpace->getMode() == csSeparation) {
+ sepCS = (GfxSeparationColorSpace *)colorSpace;
+ colorSpace2 = sepCS->getAlt();
+ nComps2 = colorSpace2->getNComps();
+ lookup = (double *)gmalloc((maxPixel + 1) * nComps2 * sizeof(double));
+ sepFunc = sepCS->getFunc();
+ for (i = 0; i <= maxPixel; ++i) {
+ x[0] = decodeLow[0] + (i * decodeRange[0]) / maxPixel;
+ sepFunc->transform(x, y);
+ for (k = 0; k < nComps2; ++k) {
+ lookup[i*nComps2 + k] = y[k];
+ }
+ }
+ } else {
+ lookup = (double *)gmalloc((maxPixel + 1) * nComps * sizeof(double));
+ for (i = 0; i <= maxPixel; ++i) {
+ for (k = 0; k < nComps; ++k) {
+ lookup[i*nComps + k] = decodeLow[k] +
+ (i * decodeRange[k]) / maxPixel;
+ }
+ }
+ }
+
+ return;
+
+ err2:
+ obj.free();
+ err1:
+ ok = gFalse;
+}
+
+GfxImageColorMap::~GfxImageColorMap() {
+ delete colorSpace;
+ gfree(lookup);
+}
+
+void GfxImageColorMap::getGray(Guchar *x, double *gray) {
+ GfxColor color;
+ double *p;
+ int i;
+
+ if (colorSpace2) {
+ p = &lookup[x[0] * nComps2];
+ for (i = 0; i < nComps2; ++i) {
+ color.c[i] = *p++;
+ }
+ colorSpace2->getGray(&color, gray);
+ } else {
+ for (i = 0; i < nComps; ++i) {
+ color.c[i] = lookup[x[i] * nComps + i];
+ }
+ colorSpace->getGray(&color, gray);
+ }
+}
+
+void GfxImageColorMap::getRGB(Guchar *x, GfxRGB *rgb) {
+ GfxColor color;
+ double *p;
+ int i;
+
+ if (colorSpace2) {
+ p = &lookup[x[0] * nComps2];
+ for (i = 0; i < nComps2; ++i) {
+ color.c[i] = *p++;
+ }
+ colorSpace2->getRGB(&color, rgb);
+ } else {
+ for (i = 0; i < nComps; ++i) {
+ color.c[i] = lookup[x[i] * nComps + i];
+ }
+ colorSpace->getRGB(&color, rgb);
+ }
+}
+
+void GfxImageColorMap::getCMYK(Guchar *x, GfxCMYK *cmyk) {
+ GfxColor color;
+ double *p;
+ int i;
+
+ if (colorSpace2) {
+ p = &lookup[x[0] * nComps2];
+ for (i = 0; i < nComps2; ++i) {
+ color.c[i] = *p++;
+ }
+ colorSpace2->getCMYK(&color, cmyk);
+ } else {
+ for (i = 0; i < nComps; ++i) {
+ color.c[i] = lookup[x[i] * nComps + i];
+ }
+ colorSpace->getCMYK(&color, cmyk);
+ }
+}
+
+//------------------------------------------------------------------------
+// GfxSubpath and GfxPath
+//------------------------------------------------------------------------
+
+GfxSubpath::GfxSubpath(double x1, double y1) {
+ size = 16;
+ x = (double *)gmalloc(size * sizeof(double));
+ y = (double *)gmalloc(size * sizeof(double));
+ curve = (GBool *)gmalloc(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 *)gmalloc(size * sizeof(double));
+ y = (double *)gmalloc(size * sizeof(double));
+ curve = (GBool *)gmalloc(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 *)grealloc(x, size * sizeof(double));
+ y = (double *)grealloc(y, size * sizeof(double));
+ curve = (GBool *)grealloc(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 *)grealloc(x, size * sizeof(double));
+ y = (double *)grealloc(y, size * sizeof(double));
+ curve = (GBool *)grealloc(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;
+}
+
+GfxPath::GfxPath() {
+ justMoved = gFalse;
+ size = 16;
+ n = 0;
+ firstX = firstY = 0;
+ subpaths = (GfxSubpath **)gmalloc(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 **)gmalloc(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 **)
+ grealloc(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 **)
+ grealloc(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 **)
+ grealloc(subpaths, size * sizeof(GfxSubpath *));
+ }
+ subpaths[n] = new GfxSubpath(firstX, firstY);
+ ++n;
+ justMoved = gFalse;
+ }
+ subpaths[n-1]->close();
+}
+
+//------------------------------------------------------------------------
+// GfxState
+//------------------------------------------------------------------------
+
+GfxState::GfxState(double dpi, PDFRectangle *pageBox, int rotate,
+ GBool upsideDown) {
+ double k;
+
+ px1 = pageBox->x1;
+ py1 = pageBox->y1;
+ px2 = pageBox->x2;
+ py2 = pageBox->y2;
+ k = dpi / 72.0;
+ if (rotate == 90) {
+ ctm[0] = 0;
+ ctm[1] = upsideDown ? k : -k;
+ ctm[2] = k;
+ ctm[3] = 0;
+ ctm[4] = -k * py1;
+ ctm[5] = k * (upsideDown ? -px1 : px2);
+ pageWidth = k * (py2 - py1);
+ pageHeight = k * (px2 - px1);
+ } else if (rotate == 180) {
+ ctm[0] = -k;
+ ctm[1] = 0;
+ ctm[2] = 0;
+ ctm[3] = upsideDown ? k : -k;
+ ctm[4] = k * px2;
+ ctm[5] = k * (upsideDown ? -py1 : py2);
+ pageWidth = k * (px2 - px1);
+ pageHeight = k * (py2 - py1);
+ } else if (rotate == 270) {
+ ctm[0] = 0;
+ ctm[1] = upsideDown ? -k : k;
+ ctm[2] = -k;
+ ctm[3] = 0;
+ ctm[4] = k * py2;
+ ctm[5] = k * (upsideDown ? px2 : -px1);
+ pageWidth = k * (py2 - py1);
+ pageHeight = k * (px2 - px1);
+ } else {
+ ctm[0] = k;
+ ctm[1] = 0;
+ ctm[2] = 0;
+ ctm[3] = upsideDown ? -k : k;
+ ctm[4] = -k * px1;
+ ctm[5] = k * (upsideDown ? py2 : -py1);
+ pageWidth = k * (px2 - px1);
+ pageHeight = k * (py2 - py1);
+ }
+
+ fillColorSpace = new GfxDeviceGrayColorSpace();
+ strokeColorSpace = new GfxDeviceGrayColorSpace();
+ fillColor.c[0] = 0;
+ strokeColor.c[0] = 0;
+ fillPattern = NULL;
+ strokePattern = NULL;
+ fillOpacity = 1;
+ strokeOpacity = 1;
+
+ lineWidth = 1;
+ lineDash = NULL;
+ lineDashLength = 0;
+ lineDashStart = 0;
+ flatness = 0;
+ lineJoin = 0;
+ lineCap = 0;
+ miterLimit = 10;
+
+ 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() {
+ if (fillColorSpace) {
+ delete fillColorSpace;
+ }
+ if (strokeColorSpace) {
+ delete strokeColorSpace;
+ }
+ if (fillPattern) {
+ delete fillPattern;
+ }
+ if (strokePattern) {
+ delete strokePattern;
+ }
+ gfree(lineDash);
+ if (path) {
+ // this gets set to NULL by restore()
+ delete path;
+ }
+ if (saved) {
+ delete saved;
+ }
+}
+
+// Used for copy();
+GfxState::GfxState(const GfxState *state) {
+ 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();
+ }
+ if (lineDashLength > 0) {
+ lineDash = (double *)gmalloc(lineDashLength * sizeof(double));
+ memcpy(lineDash, state->lineDash, lineDashLength * sizeof(double));
+ }
+ saved = NULL;
+}
+
+void GfxState::getUserClipBBox(double *xMin, double *yMin,
+ double *xMax, double *yMax) const {
+ 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::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::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::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;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-01 00:19:01 +0000