/* [<][>][^][v][top][bottom][index][help] */
DEFINITIONS
This source file includes following definitions.
- clip01
- clip01
- parse
- getDefaultRanges
- getNumColorSpaceModes
- getColorSpaceModeName
- copy
- getGray
- getRGB
- getCMYK
- getDefaultColor
- copy
- parse
- getGray
- getRGB
- getCMYK
- getDefaultColor
- copy
- getGray
- getRGB
- getCMYK
- getDefaultColor
- copy
- copy
- parse
- getGray
- getRGB
- getCMYK
- getDefaultColor
- copy
- getGray
- getRGB
- getCMYK
- getDefaultColor
- copy
- parse
- getGray
- getRGB
- getCMYK
- getDefaultColor
- getDefaultRanges
- copy
- parse
- getGray
- getRGB
- getCMYK
- getDefaultColor
- getDefaultRanges
- copy
- parse
- mapColorToBase
- getGray
- getRGB
- getCMYK
- getDefaultColor
- getDefaultRanges
- copy
- parse
- getGray
- getRGB
- getCMYK
- getDefaultColor
- copy
- parse
- getGray
- getRGB
- getCMYK
- getDefaultColor
- copy
- parse
- getGray
- getRGB
- getCMYK
- getDefaultColor
- parse
- parse
- copy
- parse
- copy
- parse
- init
- parse
- copy
- getColor
- parse
- copy
- getColor
- parse
- copy
- getColor
- getBits
- flushBits
- parse
- copy
- getTriangle
- parse
- copy
- getGray
- getRGB
- getCMYK
- getColor
- lineTo
- curveTo
- close
- offset
- moveTo
- lineTo
- curveTo
- close
- append
- offset
- setPath
- getUserClipBBox
- transformWidth
- getTransformedFontSize
- getFontTransMat
- setCTM
- concatCTM
- shiftCTM
- setFillColorSpace
- setStrokeColorSpace
- setFillPattern
- setStrokePattern
- setTransfer
- setLineDash
- clearPath
- clip
- clipToStrokePath
- textShift
- shift
- save
- restore
- parseBlendMode
//========================================================================
//
// 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"
#include "cmyk.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, StreamColorSpaceMode csMode) {
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")) {
if(csMode == streamCSDeviceRGBX)
cs = new GfxDeviceRGBXColorSpace();
else
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")) {
if(csMode == streamCSDeviceRGBX)
cs = new GfxDeviceRGBColorSpace();
else
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;
}
//------------------------------------------------------------------------
// GfxDeviceRGBXColorSpace
//------------------------------------------------------------------------
GfxDeviceRGBXColorSpace::GfxDeviceRGBXColorSpace() {
}
GfxColorSpace *GfxDeviceRGBXColorSpace::copy() {
return new GfxDeviceRGBXColorSpace();
}
//------------------------------------------------------------------------
// 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) {
unsigned char r,g,b;
float c = color->c[0];
float m = color->c[1];
float y = color->c[2];
float k = color->c[3];
convert_cmyk2rgb(c,m,y,k, &r,&g,&b);
rgb->r = r/255.0;
rgb->g = g/255.0;
rgb->b = b/255.0;
}*/
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();
y0A = obj1.arrayGet(1, &obj2)->getNum();
obj2.free();
x1A = 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;
int maxPixelForAlloc;
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;
maxPixelForAlloc = (1 << (bits>8?bits:8));
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(maxPixelForAlloc + 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(maxPixelForAlloc + 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(maxPixelForAlloc + 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) {
if(pathA) {
if(path)
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;
}
}