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Diffstat (limited to 'Build/source/libs/xpdf/xpdf/GfxState.cc')
-rw-r--r-- | Build/source/libs/xpdf/xpdf/GfxState.cc | 4137 |
1 files changed, 0 insertions, 4137 deletions
diff --git a/Build/source/libs/xpdf/xpdf/GfxState.cc b/Build/source/libs/xpdf/xpdf/GfxState.cc deleted file mode 100644 index 67b4f6fd92d..00000000000 --- a/Build/source/libs/xpdf/xpdf/GfxState.cc +++ /dev/null @@ -1,4137 +0,0 @@ -//======================================================================== -// -// GfxState.cc -// -// Copyright 1996-2003 Glyph & Cog, LLC -// -//======================================================================== - -#include <aconf.h> - -#ifdef USE_GCC_PRAGMAS -#pragma implementation -#endif - -#include <stddef.h> -#include <math.h> -#include <string.h> -#include "gmem.h" -#include "Error.h" -#include "Object.h" -#include "Array.h" -#include "Page.h" -#include "GfxState.h" - -//------------------------------------------------------------------------ - -static inline GfxColorComp clip01(GfxColorComp x) { - return (x < 0) ? 0 : (x > gfxColorComp1) ? gfxColorComp1 : x; -} - -static inline double clip01(double x) { - return (x < 0) ? 0 : (x > 1) ? 1 : x; -} - -//------------------------------------------------------------------------ - -struct GfxBlendModeInfo { - char *name; - GfxBlendMode mode; -}; - -static GfxBlendModeInfo gfxBlendModeNames[] = { - { "Normal", gfxBlendNormal }, - { "Compatible", gfxBlendNormal }, - { "Multiply", gfxBlendMultiply }, - { "Screen", gfxBlendScreen }, - { "Overlay", gfxBlendOverlay }, - { "Darken", gfxBlendDarken }, - { "Lighten", gfxBlendLighten }, - { "ColorDodge", gfxBlendColorDodge }, - { "ColorBurn", gfxBlendColorBurn }, - { "HardLight", gfxBlendHardLight }, - { "SoftLight", gfxBlendSoftLight }, - { "Difference", gfxBlendDifference }, - { "Exclusion", gfxBlendExclusion }, - { "Hue", gfxBlendHue }, - { "Saturation", gfxBlendSaturation }, - { "Color", gfxBlendColor }, - { "Luminosity", gfxBlendLuminosity } -}; - -#define nGfxBlendModeNames \ - ((int)((sizeof(gfxBlendModeNames) / sizeof(GfxBlendModeInfo)))) - -//------------------------------------------------------------------------ - -// NB: This must match the GfxColorSpaceMode enum defined in -// GfxState.h -static char *gfxColorSpaceModeNames[] = { - "DeviceGray", - "CalGray", - "DeviceRGB", - "CalRGB", - "DeviceCMYK", - "Lab", - "ICCBased", - "Indexed", - "Separation", - "DeviceN", - "Pattern" -}; - -#define nGfxColorSpaceModes ((sizeof(gfxColorSpaceModeNames) / sizeof(char *))) - -//------------------------------------------------------------------------ -// GfxColorSpace -//------------------------------------------------------------------------ - -GfxColorSpace::GfxColorSpace() { -} - -GfxColorSpace::~GfxColorSpace() { -} - -GfxColorSpace *GfxColorSpace::parse(Object *csObj) { - GfxColorSpace *cs; - Object obj1; - - cs = NULL; - if (csObj->isName()) { - if (csObj->isName("DeviceGray") || csObj->isName("G")) { - cs = new GfxDeviceGrayColorSpace(); - } else if (csObj->isName("DeviceRGB") || csObj->isName("RGB")) { - cs = new GfxDeviceRGBColorSpace(); - } else if (csObj->isName("DeviceCMYK") || csObj->isName("CMYK")) { - cs = new GfxDeviceCMYKColorSpace(); - } else if (csObj->isName("Pattern")) { - cs = new GfxPatternColorSpace(NULL); - } else { - error(-1, "Bad color space '%s'", csObj->getName()); - } - } else if (csObj->isArray()) { - csObj->arrayGet(0, &obj1); - if (obj1.isName("DeviceGray") || obj1.isName("G")) { - cs = new GfxDeviceGrayColorSpace(); - } else if (obj1.isName("DeviceRGB") || obj1.isName("RGB")) { - cs = new GfxDeviceRGBColorSpace(); - } else if (obj1.isName("DeviceCMYK") || obj1.isName("CMYK")) { - cs = new GfxDeviceCMYKColorSpace(); - } else if (obj1.isName("CalGray")) { - cs = GfxCalGrayColorSpace::parse(csObj->getArray()); - } else if (obj1.isName("CalRGB")) { - cs = GfxCalRGBColorSpace::parse(csObj->getArray()); - } else if (obj1.isName("Lab")) { - cs = GfxLabColorSpace::parse(csObj->getArray()); - } else if (obj1.isName("ICCBased")) { - cs = GfxICCBasedColorSpace::parse(csObj->getArray()); - } else if (obj1.isName("Indexed") || obj1.isName("I")) { - cs = GfxIndexedColorSpace::parse(csObj->getArray()); - } else if (obj1.isName("Separation")) { - cs = GfxSeparationColorSpace::parse(csObj->getArray()); - } else if (obj1.isName("DeviceN")) { - cs = GfxDeviceNColorSpace::parse(csObj->getArray()); - } else if (obj1.isName("Pattern")) { - cs = GfxPatternColorSpace::parse(csObj->getArray()); - } else { - error(-1, "Bad color space"); - } - obj1.free(); - } else { - error(-1, "Bad color space - expected name or array"); - } - return cs; -} - -void GfxColorSpace::getDefaultRanges(double *decodeLow, double *decodeRange, - int maxImgPixel) { - int i; - - for (i = 0; i < getNComps(); ++i) { - decodeLow[i] = 0; - decodeRange[i] = 1; - } -} - -int GfxColorSpace::getNumColorSpaceModes() { - return nGfxColorSpaceModes; -} - -char *GfxColorSpace::getColorSpaceModeName(int idx) { - return gfxColorSpaceModeNames[idx]; -} - -//------------------------------------------------------------------------ -// GfxDeviceGrayColorSpace -//------------------------------------------------------------------------ - -GfxDeviceGrayColorSpace::GfxDeviceGrayColorSpace() { -} - -GfxDeviceGrayColorSpace::~GfxDeviceGrayColorSpace() { -} - -GfxColorSpace *GfxDeviceGrayColorSpace::copy() { - return new GfxDeviceGrayColorSpace(); -} - -void GfxDeviceGrayColorSpace::getGray(GfxColor *color, GfxGray *gray) { - *gray = clip01(color->c[0]); -} - -void GfxDeviceGrayColorSpace::getRGB(GfxColor *color, GfxRGB *rgb) { - rgb->r = rgb->g = rgb->b = clip01(color->c[0]); -} - -void GfxDeviceGrayColorSpace::getCMYK(GfxColor *color, GfxCMYK *cmyk) { - cmyk->c = cmyk->m = cmyk->y = 0; - cmyk->k = clip01(gfxColorComp1 - color->c[0]); -} - -void GfxDeviceGrayColorSpace::getDefaultColor(GfxColor *color) { - color->c[0] = 0; -} - -//------------------------------------------------------------------------ -// GfxCalGrayColorSpace -//------------------------------------------------------------------------ - -GfxCalGrayColorSpace::GfxCalGrayColorSpace() { - whiteX = whiteY = whiteZ = 1; - blackX = blackY = blackZ = 0; - gamma = 1; -} - -GfxCalGrayColorSpace::~GfxCalGrayColorSpace() { -} - -GfxColorSpace *GfxCalGrayColorSpace::copy() { - GfxCalGrayColorSpace *cs; - - cs = new GfxCalGrayColorSpace(); - cs->whiteX = whiteX; - cs->whiteY = whiteY; - cs->whiteZ = whiteZ; - cs->blackX = blackX; - cs->blackY = blackY; - cs->blackZ = blackZ; - cs->gamma = gamma; - return cs; -} - -GfxColorSpace *GfxCalGrayColorSpace::parse(Array *arr) { - GfxCalGrayColorSpace *cs; - Object obj1, obj2, obj3; - - arr->get(1, &obj1); - if (!obj1.isDict()) { - error(-1, "Bad CalGray color space"); - obj1.free(); - return NULL; - } - cs = new GfxCalGrayColorSpace(); - if (obj1.dictLookup("WhitePoint", &obj2)->isArray() && - obj2.arrayGetLength() == 3) { - obj2.arrayGet(0, &obj3); - cs->whiteX = obj3.getNum(); - obj3.free(); - obj2.arrayGet(1, &obj3); - cs->whiteY = obj3.getNum(); - obj3.free(); - obj2.arrayGet(2, &obj3); - cs->whiteZ = obj3.getNum(); - obj3.free(); - } - obj2.free(); - if (obj1.dictLookup("BlackPoint", &obj2)->isArray() && - obj2.arrayGetLength() == 3) { - obj2.arrayGet(0, &obj3); - cs->blackX = obj3.getNum(); - obj3.free(); - obj2.arrayGet(1, &obj3); - cs->blackY = obj3.getNum(); - obj3.free(); - obj2.arrayGet(2, &obj3); - cs->blackZ = obj3.getNum(); - obj3.free(); - } - obj2.free(); - if (obj1.dictLookup("Gamma", &obj2)->isNum()) { - cs->gamma = obj2.getNum(); - } - obj2.free(); - obj1.free(); - return cs; -} - -void GfxCalGrayColorSpace::getGray(GfxColor *color, GfxGray *gray) { - *gray = clip01(color->c[0]); -} - -void GfxCalGrayColorSpace::getRGB(GfxColor *color, GfxRGB *rgb) { - rgb->r = rgb->g = rgb->b = clip01(color->c[0]); -} - -void GfxCalGrayColorSpace::getCMYK(GfxColor *color, GfxCMYK *cmyk) { - cmyk->c = cmyk->m = cmyk->y = 0; - cmyk->k = clip01(gfxColorComp1 - color->c[0]); -} - -void GfxCalGrayColorSpace::getDefaultColor(GfxColor *color) { - color->c[0] = 0; -} - -//------------------------------------------------------------------------ -// GfxDeviceRGBColorSpace -//------------------------------------------------------------------------ - -GfxDeviceRGBColorSpace::GfxDeviceRGBColorSpace() { -} - -GfxDeviceRGBColorSpace::~GfxDeviceRGBColorSpace() { -} - -GfxColorSpace *GfxDeviceRGBColorSpace::copy() { - return new GfxDeviceRGBColorSpace(); -} - -void GfxDeviceRGBColorSpace::getGray(GfxColor *color, GfxGray *gray) { - *gray = clip01((GfxColorComp)(0.3 * color->c[0] + - 0.59 * color->c[1] + - 0.11 * color->c[2] + 0.5)); -} - -void GfxDeviceRGBColorSpace::getRGB(GfxColor *color, GfxRGB *rgb) { - rgb->r = clip01(color->c[0]); - rgb->g = clip01(color->c[1]); - rgb->b = clip01(color->c[2]); -} - -void GfxDeviceRGBColorSpace::getCMYK(GfxColor *color, GfxCMYK *cmyk) { - GfxColorComp c, m, y, k; - - c = clip01(gfxColorComp1 - color->c[0]); - m = clip01(gfxColorComp1 - color->c[1]); - y = clip01(gfxColorComp1 - color->c[2]); - k = c; - if (m < k) { - k = m; - } - if (y < k) { - k = y; - } - cmyk->c = c - k; - cmyk->m = m - k; - cmyk->y = y - k; - cmyk->k = k; -} - -void GfxDeviceRGBColorSpace::getDefaultColor(GfxColor *color) { - color->c[0] = 0; - color->c[1] = 0; - color->c[2] = 0; -} - -//------------------------------------------------------------------------ -// GfxCalRGBColorSpace -//------------------------------------------------------------------------ - -GfxCalRGBColorSpace::GfxCalRGBColorSpace() { - whiteX = whiteY = whiteZ = 1; - blackX = blackY = blackZ = 0; - gammaR = gammaG = gammaB = 1; - mat[0] = 1; mat[1] = 0; mat[2] = 0; - mat[3] = 0; mat[4] = 1; mat[5] = 0; - mat[6] = 0; mat[7] = 0; mat[8] = 1; -} - -GfxCalRGBColorSpace::~GfxCalRGBColorSpace() { -} - -GfxColorSpace *GfxCalRGBColorSpace::copy() { - GfxCalRGBColorSpace *cs; - int i; - - cs = new GfxCalRGBColorSpace(); - cs->whiteX = whiteX; - cs->whiteY = whiteY; - cs->whiteZ = whiteZ; - cs->blackX = blackX; - cs->blackY = blackY; - cs->blackZ = blackZ; - cs->gammaR = gammaR; - cs->gammaG = gammaG; - cs->gammaB = gammaB; - for (i = 0; i < 9; ++i) { - cs->mat[i] = mat[i]; - } - return cs; -} - -GfxColorSpace *GfxCalRGBColorSpace::parse(Array *arr) { - GfxCalRGBColorSpace *cs; - Object obj1, obj2, obj3; - int i; - - arr->get(1, &obj1); - if (!obj1.isDict()) { - error(-1, "Bad CalRGB color space"); - obj1.free(); - return NULL; - } - cs = new GfxCalRGBColorSpace(); - if (obj1.dictLookup("WhitePoint", &obj2)->isArray() && - obj2.arrayGetLength() == 3) { - obj2.arrayGet(0, &obj3); - cs->whiteX = obj3.getNum(); - obj3.free(); - obj2.arrayGet(1, &obj3); - cs->whiteY = obj3.getNum(); - obj3.free(); - obj2.arrayGet(2, &obj3); - cs->whiteZ = obj3.getNum(); - obj3.free(); - } - obj2.free(); - if (obj1.dictLookup("BlackPoint", &obj2)->isArray() && - obj2.arrayGetLength() == 3) { - obj2.arrayGet(0, &obj3); - cs->blackX = obj3.getNum(); - obj3.free(); - obj2.arrayGet(1, &obj3); - cs->blackY = obj3.getNum(); - obj3.free(); - obj2.arrayGet(2, &obj3); - cs->blackZ = obj3.getNum(); - obj3.free(); - } - obj2.free(); - if (obj1.dictLookup("Gamma", &obj2)->isArray() && - obj2.arrayGetLength() == 3) { - obj2.arrayGet(0, &obj3); - cs->gammaR = obj3.getNum(); - obj3.free(); - obj2.arrayGet(1, &obj3); - cs->gammaG = obj3.getNum(); - obj3.free(); - obj2.arrayGet(2, &obj3); - cs->gammaB = obj3.getNum(); - obj3.free(); - } - obj2.free(); - if (obj1.dictLookup("Matrix", &obj2)->isArray() && - obj2.arrayGetLength() == 9) { - for (i = 0; i < 9; ++i) { - obj2.arrayGet(i, &obj3); - cs->mat[i] = obj3.getNum(); - obj3.free(); - } - } - obj2.free(); - obj1.free(); - return cs; -} - -void GfxCalRGBColorSpace::getGray(GfxColor *color, GfxGray *gray) { - *gray = clip01((GfxColorComp)(0.299 * color->c[0] + - 0.587 * color->c[1] + - 0.114 * color->c[2] + 0.5)); -} - -void GfxCalRGBColorSpace::getRGB(GfxColor *color, GfxRGB *rgb) { - rgb->r = clip01(color->c[0]); - rgb->g = clip01(color->c[1]); - rgb->b = clip01(color->c[2]); -} - -void GfxCalRGBColorSpace::getCMYK(GfxColor *color, GfxCMYK *cmyk) { - GfxColorComp c, m, y, k; - - c = clip01(gfxColorComp1 - color->c[0]); - m = clip01(gfxColorComp1 - color->c[1]); - y = clip01(gfxColorComp1 - color->c[2]); - k = c; - if (m < k) { - k = m; - } - if (y < k) { - k = y; - } - cmyk->c = c - k; - cmyk->m = m - k; - cmyk->y = y - k; - cmyk->k = k; -} - -void GfxCalRGBColorSpace::getDefaultColor(GfxColor *color) { - color->c[0] = 0; - color->c[1] = 0; - color->c[2] = 0; -} - -//------------------------------------------------------------------------ -// GfxDeviceCMYKColorSpace -//------------------------------------------------------------------------ - -GfxDeviceCMYKColorSpace::GfxDeviceCMYKColorSpace() { -} - -GfxDeviceCMYKColorSpace::~GfxDeviceCMYKColorSpace() { -} - -GfxColorSpace *GfxDeviceCMYKColorSpace::copy() { - return new GfxDeviceCMYKColorSpace(); -} - -void GfxDeviceCMYKColorSpace::getGray(GfxColor *color, GfxGray *gray) { - *gray = clip01((GfxColorComp)(gfxColorComp1 - color->c[3] - - 0.3 * color->c[0] - - 0.59 * color->c[1] - - 0.11 * color->c[2] + 0.5)); -} - -void GfxDeviceCMYKColorSpace::getRGB(GfxColor *color, GfxRGB *rgb) { - double c, m, y, k, c1, m1, y1, k1, r, g, b, x; - - c = colToDbl(color->c[0]); - m = colToDbl(color->c[1]); - y = colToDbl(color->c[2]); - k = colToDbl(color->c[3]); - c1 = 1 - c; - m1 = 1 - m; - y1 = 1 - y; - k1 = 1 - k; - // this is a matrix multiplication, unrolled for performance - // C M Y K - x = c1 * m1 * y1 * k1; // 0 0 0 0 - r = g = b = x; - x = c1 * m1 * y1 * k; // 0 0 0 1 - r += 0.1373 * x; - g += 0.1216 * x; - b += 0.1255 * x; - x = c1 * m1 * y * k1; // 0 0 1 0 - r += x; - g += 0.9490 * x; - x = c1 * m1 * y * k; // 0 0 1 1 - r += 0.1098 * x; - g += 0.1020 * x; - x = c1 * m * y1 * k1; // 0 1 0 0 - r += 0.9255 * x; - b += 0.5490 * x; - x = c1 * m * y1 * k; // 0 1 0 1 - r += 0.1412 * x; - x = c1 * m * y * k1; // 0 1 1 0 - r += 0.9294 * x; - g += 0.1098 * x; - b += 0.1412 * x; - x = c1 * m * y * k; // 0 1 1 1 - r += 0.1333 * x; - x = c * m1 * y1 * k1; // 1 0 0 0 - g += 0.6784 * x; - b += 0.9373 * x; - x = c * m1 * y1 * k; // 1 0 0 1 - g += 0.0588 * x; - b += 0.1412 * x; - x = c * m1 * y * k1; // 1 0 1 0 - g += 0.6510 * x; - b += 0.3137 * x; - x = c * m1 * y * k; // 1 0 1 1 - g += 0.0745 * x; - x = c * m * y1 * k1; // 1 1 0 0 - r += 0.1804 * x; - g += 0.1922 * x; - b += 0.5725 * x; - x = c * m * y1 * k; // 1 1 0 1 - b += 0.0078 * x; - x = c * m * y * k1; // 1 1 1 0 - r += 0.2118 * x; - g += 0.2119 * x; - b += 0.2235 * x; - rgb->r = clip01(dblToCol(r)); - rgb->g = clip01(dblToCol(g)); - rgb->b = clip01(dblToCol(b)); -} - -void GfxDeviceCMYKColorSpace::getCMYK(GfxColor *color, GfxCMYK *cmyk) { - cmyk->c = clip01(color->c[0]); - cmyk->m = clip01(color->c[1]); - cmyk->y = clip01(color->c[2]); - cmyk->k = clip01(color->c[3]); -} - -void GfxDeviceCMYKColorSpace::getDefaultColor(GfxColor *color) { - color->c[0] = 0; - color->c[1] = 0; - color->c[2] = 0; - color->c[3] = gfxColorComp1; -} - -//------------------------------------------------------------------------ -// GfxLabColorSpace -//------------------------------------------------------------------------ - -// This is the inverse of MatrixLMN in Example 4.10 from the PostScript -// Language Reference, Third Edition. -static double xyzrgb[3][3] = { - { 3.240449, -1.537136, -0.498531 }, - { -0.969265, 1.876011, 0.041556 }, - { 0.055643, -0.204026, 1.057229 } -}; - -GfxLabColorSpace::GfxLabColorSpace() { - whiteX = whiteY = whiteZ = 1; - blackX = blackY = blackZ = 0; - aMin = bMin = -100; - aMax = bMax = 100; -} - -GfxLabColorSpace::~GfxLabColorSpace() { -} - -GfxColorSpace *GfxLabColorSpace::copy() { - GfxLabColorSpace *cs; - - cs = new GfxLabColorSpace(); - cs->whiteX = whiteX; - cs->whiteY = whiteY; - cs->whiteZ = whiteZ; - cs->blackX = blackX; - cs->blackY = blackY; - cs->blackZ = blackZ; - cs->aMin = aMin; - cs->aMax = aMax; - cs->bMin = bMin; - cs->bMax = bMax; - cs->kr = kr; - cs->kg = kg; - cs->kb = kb; - return cs; -} - -GfxColorSpace *GfxLabColorSpace::parse(Array *arr) { - GfxLabColorSpace *cs; - Object obj1, obj2, obj3; - - arr->get(1, &obj1); - if (!obj1.isDict()) { - error(-1, "Bad Lab color space"); - obj1.free(); - return NULL; - } - cs = new GfxLabColorSpace(); - if (obj1.dictLookup("WhitePoint", &obj2)->isArray() && - obj2.arrayGetLength() == 3) { - obj2.arrayGet(0, &obj3); - cs->whiteX = obj3.getNum(); - obj3.free(); - obj2.arrayGet(1, &obj3); - cs->whiteY = obj3.getNum(); - obj3.free(); - obj2.arrayGet(2, &obj3); - cs->whiteZ = obj3.getNum(); - obj3.free(); - } - obj2.free(); - if (obj1.dictLookup("BlackPoint", &obj2)->isArray() && - obj2.arrayGetLength() == 3) { - obj2.arrayGet(0, &obj3); - cs->blackX = obj3.getNum(); - obj3.free(); - obj2.arrayGet(1, &obj3); - cs->blackY = obj3.getNum(); - obj3.free(); - obj2.arrayGet(2, &obj3); - cs->blackZ = obj3.getNum(); - obj3.free(); - } - obj2.free(); - if (obj1.dictLookup("Range", &obj2)->isArray() && - obj2.arrayGetLength() == 4) { - obj2.arrayGet(0, &obj3); - cs->aMin = obj3.getNum(); - obj3.free(); - obj2.arrayGet(1, &obj3); - cs->aMax = obj3.getNum(); - obj3.free(); - obj2.arrayGet(2, &obj3); - cs->bMin = obj3.getNum(); - obj3.free(); - obj2.arrayGet(3, &obj3); - cs->bMax = obj3.getNum(); - obj3.free(); - } - obj2.free(); - obj1.free(); - - cs->kr = 1 / (xyzrgb[0][0] * cs->whiteX + - xyzrgb[0][1] * cs->whiteY + - xyzrgb[0][2] * cs->whiteZ); - cs->kg = 1 / (xyzrgb[1][0] * cs->whiteX + - xyzrgb[1][1] * cs->whiteY + - xyzrgb[1][2] * cs->whiteZ); - cs->kb = 1 / (xyzrgb[2][0] * cs->whiteX + - xyzrgb[2][1] * cs->whiteY + - xyzrgb[2][2] * cs->whiteZ); - - return cs; -} - -void GfxLabColorSpace::getGray(GfxColor *color, GfxGray *gray) { - GfxRGB rgb; - - getRGB(color, &rgb); - *gray = clip01((GfxColorComp)(0.299 * rgb.r + - 0.587 * rgb.g + - 0.114 * rgb.b + 0.5)); -} - -void GfxLabColorSpace::getRGB(GfxColor *color, GfxRGB *rgb) { - double X, Y, Z; - double t1, t2; - double r, g, b; - - // convert L*a*b* to CIE 1931 XYZ color space - t1 = (colToDbl(color->c[0]) + 16) / 116; - t2 = t1 + colToDbl(color->c[1]) / 500; - if (t2 >= (6.0 / 29.0)) { - X = t2 * t2 * t2; - } else { - X = (108.0 / 841.0) * (t2 - (4.0 / 29.0)); - } - X *= whiteX; - if (t1 >= (6.0 / 29.0)) { - Y = t1 * t1 * t1; - } else { - Y = (108.0 / 841.0) * (t1 - (4.0 / 29.0)); - } - Y *= whiteY; - t2 = t1 - colToDbl(color->c[2]) / 200; - if (t2 >= (6.0 / 29.0)) { - Z = t2 * t2 * t2; - } else { - Z = (108.0 / 841.0) * (t2 - (4.0 / 29.0)); - } - Z *= whiteZ; - - // convert XYZ to RGB, including gamut mapping and gamma correction - r = xyzrgb[0][0] * X + xyzrgb[0][1] * Y + xyzrgb[0][2] * Z; - g = xyzrgb[1][0] * X + xyzrgb[1][1] * Y + xyzrgb[1][2] * Z; - b = xyzrgb[2][0] * X + xyzrgb[2][1] * Y + xyzrgb[2][2] * Z; - rgb->r = dblToCol(pow(clip01(r * kr), 0.5)); - rgb->g = dblToCol(pow(clip01(g * kg), 0.5)); - rgb->b = dblToCol(pow(clip01(b * kb), 0.5)); -} - -void GfxLabColorSpace::getCMYK(GfxColor *color, GfxCMYK *cmyk) { - GfxRGB rgb; - GfxColorComp c, m, y, k; - - getRGB(color, &rgb); - c = clip01(gfxColorComp1 - rgb.r); - m = clip01(gfxColorComp1 - rgb.g); - y = clip01(gfxColorComp1 - rgb.b); - k = c; - if (m < k) { - k = m; - } - if (y < k) { - k = y; - } - cmyk->c = c - k; - cmyk->m = m - k; - cmyk->y = y - k; - cmyk->k = k; -} - -void GfxLabColorSpace::getDefaultColor(GfxColor *color) { - color->c[0] = 0; - if (aMin > 0) { - color->c[1] = dblToCol(aMin); - } else if (aMax < 0) { - color->c[1] = dblToCol(aMax); - } else { - color->c[1] = 0; - } - if (bMin > 0) { - color->c[2] = dblToCol(bMin); - } else if (bMax < 0) { - color->c[2] = dblToCol(bMax); - } else { - color->c[2] = 0; - } -} - -void GfxLabColorSpace::getDefaultRanges(double *decodeLow, double *decodeRange, - int maxImgPixel) { - decodeLow[0] = 0; - decodeRange[0] = 100; - decodeLow[1] = aMin; - decodeRange[1] = aMax - aMin; - decodeLow[2] = bMin; - decodeRange[2] = bMax - bMin; -} - -//------------------------------------------------------------------------ -// GfxICCBasedColorSpace -//------------------------------------------------------------------------ - -GfxICCBasedColorSpace::GfxICCBasedColorSpace(int nCompsA, GfxColorSpace *altA, - Ref *iccProfileStreamA) { - nComps = nCompsA; - alt = altA; - iccProfileStream = *iccProfileStreamA; - rangeMin[0] = rangeMin[1] = rangeMin[2] = rangeMin[3] = 0; - rangeMax[0] = rangeMax[1] = rangeMax[2] = rangeMax[3] = 1; -} - -GfxICCBasedColorSpace::~GfxICCBasedColorSpace() { - delete alt; -} - -GfxColorSpace *GfxICCBasedColorSpace::copy() { - GfxICCBasedColorSpace *cs; - int i; - - cs = new GfxICCBasedColorSpace(nComps, alt->copy(), &iccProfileStream); - for (i = 0; i < 4; ++i) { - cs->rangeMin[i] = rangeMin[i]; - cs->rangeMax[i] = rangeMax[i]; - } - return cs; -} - -GfxColorSpace *GfxICCBasedColorSpace::parse(Array *arr) { - GfxICCBasedColorSpace *cs; - Ref iccProfileStreamA; - int nCompsA; - GfxColorSpace *altA; - Dict *dict; - Object obj1, obj2, obj3; - int i; - - arr->getNF(1, &obj1); - if (obj1.isRef()) { - iccProfileStreamA = obj1.getRef(); - } else { - iccProfileStreamA.num = 0; - iccProfileStreamA.gen = 0; - } - obj1.free(); - arr->get(1, &obj1); - if (!obj1.isStream()) { - error(-1, "Bad ICCBased color space (stream)"); - obj1.free(); - return NULL; - } - dict = obj1.streamGetDict(); - if (!dict->lookup("N", &obj2)->isInt()) { - error(-1, "Bad ICCBased color space (N)"); - obj2.free(); - obj1.free(); - return NULL; - } - nCompsA = obj2.getInt(); - obj2.free(); - if (nCompsA > gfxColorMaxComps) { - error(-1, "ICCBased color space with too many (%d > %d) components", - nCompsA, gfxColorMaxComps); - nCompsA = gfxColorMaxComps; - } - if (dict->lookup("Alternate", &obj2)->isNull() || - !(altA = GfxColorSpace::parse(&obj2))) { - switch (nCompsA) { - case 1: - altA = new GfxDeviceGrayColorSpace(); - break; - case 3: - altA = new GfxDeviceRGBColorSpace(); - break; - case 4: - altA = new GfxDeviceCMYKColorSpace(); - break; - default: - error(-1, "Bad ICCBased color space - invalid N"); - obj2.free(); - obj1.free(); - return NULL; - } - } - obj2.free(); - cs = new GfxICCBasedColorSpace(nCompsA, altA, &iccProfileStreamA); - if (dict->lookup("Range", &obj2)->isArray() && - obj2.arrayGetLength() == 2 * nCompsA) { - for (i = 0; i < nCompsA; ++i) { - obj2.arrayGet(2*i, &obj3); - cs->rangeMin[i] = obj3.getNum(); - obj3.free(); - obj2.arrayGet(2*i+1, &obj3); - cs->rangeMax[i] = obj3.getNum(); - obj3.free(); - } - } - obj2.free(); - obj1.free(); - return cs; -} - -void GfxICCBasedColorSpace::getGray(GfxColor *color, GfxGray *gray) { - alt->getGray(color, gray); -} - -void GfxICCBasedColorSpace::getRGB(GfxColor *color, GfxRGB *rgb) { - alt->getRGB(color, rgb); -} - -void GfxICCBasedColorSpace::getCMYK(GfxColor *color, GfxCMYK *cmyk) { - alt->getCMYK(color, cmyk); -} - -void GfxICCBasedColorSpace::getDefaultColor(GfxColor *color) { - int i; - - for (i = 0; i < nComps; ++i) { - if (rangeMin[i] > 0) { - color->c[i] = dblToCol(rangeMin[i]); - } else if (rangeMax[i] < 0) { - color->c[i] = dblToCol(rangeMax[i]); - } else { - color->c[i] = 0; - } - } -} - -void GfxICCBasedColorSpace::getDefaultRanges(double *decodeLow, - double *decodeRange, - int maxImgPixel) { - alt->getDefaultRanges(decodeLow, decodeRange, maxImgPixel); - -#if 0 - // this is nominally correct, but some PDF files don't set the - // correct ranges in the ICCBased dict - int i; - - for (i = 0; i < nComps; ++i) { - decodeLow[i] = rangeMin[i]; - decodeRange[i] = rangeMax[i] - rangeMin[i]; - } -#endif -} - -//------------------------------------------------------------------------ -// GfxIndexedColorSpace -//------------------------------------------------------------------------ - -GfxIndexedColorSpace::GfxIndexedColorSpace(GfxColorSpace *baseA, - int indexHighA) { - base = baseA; - indexHigh = indexHighA; - lookup = (Guchar *)gmallocn((indexHigh + 1) * base->getNComps(), - sizeof(Guchar)); -} - -GfxIndexedColorSpace::~GfxIndexedColorSpace() { - delete base; - gfree(lookup); -} - -GfxColorSpace *GfxIndexedColorSpace::copy() { - GfxIndexedColorSpace *cs; - - cs = new GfxIndexedColorSpace(base->copy(), indexHigh); - memcpy(cs->lookup, lookup, - (indexHigh + 1) * base->getNComps() * sizeof(Guchar)); - return cs; -} - -GfxColorSpace *GfxIndexedColorSpace::parse(Array *arr) { - GfxIndexedColorSpace *cs; - GfxColorSpace *baseA; - int indexHighA; - Object obj1; - int x; - char *s; - int n, i, j; - - if (arr->getLength() != 4) { - error(-1, "Bad Indexed color space"); - goto err1; - } - arr->get(1, &obj1); - if (!(baseA = GfxColorSpace::parse(&obj1))) { - error(-1, "Bad Indexed color space (base color space)"); - goto err2; - } - obj1.free(); - if (!arr->get(2, &obj1)->isInt()) { - error(-1, "Bad Indexed color space (hival)"); - delete baseA; - goto err2; - } - indexHighA = obj1.getInt(); - if (indexHighA < 0 || indexHighA > 255) { - // the PDF spec requires indexHigh to be in [0,255] -- allowing - // values larger than 255 creates a security hole: if nComps * - // indexHigh is greater than 2^31, the loop below may overwrite - // past the end of the array - error(-1, "Bad Indexed color space (invalid indexHigh value)"); - delete baseA; - goto err2; - } - obj1.free(); - cs = new GfxIndexedColorSpace(baseA, indexHighA); - arr->get(3, &obj1); - n = baseA->getNComps(); - if (obj1.isStream()) { - obj1.streamReset(); - for (i = 0; i <= indexHighA; ++i) { - for (j = 0; j < n; ++j) { - if ((x = obj1.streamGetChar()) == EOF) { - error(-1, "Bad Indexed color space (lookup table stream too short)"); - goto err3; - } - cs->lookup[i*n + j] = (Guchar)x; - } - } - obj1.streamClose(); - } else if (obj1.isString()) { - if (obj1.getString()->getLength() < (indexHighA + 1) * n) { - error(-1, "Bad Indexed color space (lookup table string too short)"); - goto err3; - } - s = obj1.getString()->getCString(); - for (i = 0; i <= indexHighA; ++i) { - for (j = 0; j < n; ++j) { - cs->lookup[i*n + j] = (Guchar)*s++; - } - } - } else { - error(-1, "Bad Indexed color space (lookup table)"); - goto err3; - } - obj1.free(); - return cs; - - err3: - delete cs; - err2: - obj1.free(); - err1: - return NULL; -} - -GfxColor *GfxIndexedColorSpace::mapColorToBase(GfxColor *color, - GfxColor *baseColor) { - Guchar *p; - double low[gfxColorMaxComps], range[gfxColorMaxComps]; - int n, i; - - n = base->getNComps(); - base->getDefaultRanges(low, range, indexHigh); - p = &lookup[(int)(colToDbl(color->c[0]) + 0.5) * n]; - for (i = 0; i < n; ++i) { - baseColor->c[i] = dblToCol(low[i] + (p[i] / 255.0) * range[i]); - } - return baseColor; -} - -void GfxIndexedColorSpace::getGray(GfxColor *color, GfxGray *gray) { - GfxColor color2; - - base->getGray(mapColorToBase(color, &color2), gray); -} - -void GfxIndexedColorSpace::getRGB(GfxColor *color, GfxRGB *rgb) { - GfxColor color2; - - base->getRGB(mapColorToBase(color, &color2), rgb); -} - -void GfxIndexedColorSpace::getCMYK(GfxColor *color, GfxCMYK *cmyk) { - GfxColor color2; - - base->getCMYK(mapColorToBase(color, &color2), cmyk); -} - -void GfxIndexedColorSpace::getDefaultColor(GfxColor *color) { - color->c[0] = 0; -} - -void GfxIndexedColorSpace::getDefaultRanges(double *decodeLow, - double *decodeRange, - int maxImgPixel) { - decodeLow[0] = 0; - decodeRange[0] = maxImgPixel; -} - -//------------------------------------------------------------------------ -// GfxSeparationColorSpace -//------------------------------------------------------------------------ - -GfxSeparationColorSpace::GfxSeparationColorSpace(GString *nameA, - GfxColorSpace *altA, - Function *funcA) { - name = nameA; - alt = altA; - func = funcA; - nonMarking = !name->cmp("None"); -} - -GfxSeparationColorSpace::~GfxSeparationColorSpace() { - delete name; - delete alt; - delete func; -} - -GfxColorSpace *GfxSeparationColorSpace::copy() { - return new GfxSeparationColorSpace(name->copy(), alt->copy(), func->copy()); -} - -//~ handle the 'All' and 'None' colorants -GfxColorSpace *GfxSeparationColorSpace::parse(Array *arr) { - GfxSeparationColorSpace *cs; - GString *nameA; - GfxColorSpace *altA; - Function *funcA; - Object obj1; - - if (arr->getLength() != 4) { - error(-1, "Bad Separation color space"); - goto err1; - } - if (!arr->get(1, &obj1)->isName()) { - error(-1, "Bad Separation color space (name)"); - goto err2; - } - nameA = new GString(obj1.getName()); - obj1.free(); - arr->get(2, &obj1); - if (!(altA = GfxColorSpace::parse(&obj1))) { - error(-1, "Bad Separation color space (alternate color space)"); - goto err3; - } - obj1.free(); - arr->get(3, &obj1); - if (!(funcA = Function::parse(&obj1))) { - goto err4; - } - obj1.free(); - cs = new GfxSeparationColorSpace(nameA, altA, funcA); - return cs; - - err4: - delete altA; - err3: - delete nameA; - err2: - obj1.free(); - err1: - return NULL; -} - -void GfxSeparationColorSpace::getGray(GfxColor *color, GfxGray *gray) { - double x; - double c[gfxColorMaxComps]; - GfxColor color2; - int i; - - x = colToDbl(color->c[0]); - func->transform(&x, c); - for (i = 0; i < alt->getNComps(); ++i) { - color2.c[i] = dblToCol(c[i]); - } - alt->getGray(&color2, gray); -} - -void GfxSeparationColorSpace::getRGB(GfxColor *color, GfxRGB *rgb) { - double x; - double c[gfxColorMaxComps]; - GfxColor color2; - int i; - - x = colToDbl(color->c[0]); - func->transform(&x, c); - for (i = 0; i < alt->getNComps(); ++i) { - color2.c[i] = dblToCol(c[i]); - } - alt->getRGB(&color2, rgb); -} - -void GfxSeparationColorSpace::getCMYK(GfxColor *color, GfxCMYK *cmyk) { - double x; - double c[gfxColorMaxComps]; - GfxColor color2; - int i; - - x = colToDbl(color->c[0]); - func->transform(&x, c); - for (i = 0; i < alt->getNComps(); ++i) { - color2.c[i] = dblToCol(c[i]); - } - alt->getCMYK(&color2, cmyk); -} - -void GfxSeparationColorSpace::getDefaultColor(GfxColor *color) { - color->c[0] = gfxColorComp1; -} - -//------------------------------------------------------------------------ -// GfxDeviceNColorSpace -//------------------------------------------------------------------------ - -GfxDeviceNColorSpace::GfxDeviceNColorSpace(int nCompsA, - GfxColorSpace *altA, - Function *funcA) { - nComps = nCompsA; - alt = altA; - func = funcA; - nonMarking = gFalse; -} - -GfxDeviceNColorSpace::~GfxDeviceNColorSpace() { - int i; - - for (i = 0; i < nComps; ++i) { - delete names[i]; - } - delete alt; - delete func; -} - -GfxColorSpace *GfxDeviceNColorSpace::copy() { - GfxDeviceNColorSpace *cs; - int i; - - cs = new GfxDeviceNColorSpace(nComps, alt->copy(), func->copy()); - for (i = 0; i < nComps; ++i) { - cs->names[i] = names[i]->copy(); - } - cs->nonMarking = nonMarking; - return cs; -} - -//~ handle the 'None' colorant -GfxColorSpace *GfxDeviceNColorSpace::parse(Array *arr) { - GfxDeviceNColorSpace *cs; - int nCompsA; - GString *namesA[gfxColorMaxComps]; - GfxColorSpace *altA; - Function *funcA; - Object obj1, obj2; - int i; - - if (arr->getLength() != 4 && arr->getLength() != 5) { - error(-1, "Bad DeviceN color space"); - goto err1; - } - if (!arr->get(1, &obj1)->isArray()) { - error(-1, "Bad DeviceN color space (names)"); - goto err2; - } - nCompsA = obj1.arrayGetLength(); - if (nCompsA > gfxColorMaxComps) { - error(-1, "DeviceN color space with too many (%d > %d) components", - nCompsA, gfxColorMaxComps); - nCompsA = gfxColorMaxComps; - } - for (i = 0; i < nCompsA; ++i) { - if (!obj1.arrayGet(i, &obj2)->isName()) { - error(-1, "Bad DeviceN color space (names)"); - obj2.free(); - goto err2; - } - namesA[i] = new GString(obj2.getName()); - obj2.free(); - } - obj1.free(); - arr->get(2, &obj1); - if (!(altA = GfxColorSpace::parse(&obj1))) { - error(-1, "Bad DeviceN color space (alternate color space)"); - goto err3; - } - obj1.free(); - arr->get(3, &obj1); - if (!(funcA = Function::parse(&obj1))) { - goto err4; - } - obj1.free(); - cs = new GfxDeviceNColorSpace(nCompsA, altA, funcA); - cs->nonMarking = gTrue; - for (i = 0; i < nCompsA; ++i) { - cs->names[i] = namesA[i]; - if (namesA[i]->cmp("None")) { - cs->nonMarking = gFalse; - } - } - return cs; - - err4: - delete altA; - err3: - for (i = 0; i < nCompsA; ++i) { - delete namesA[i]; - } - err2: - obj1.free(); - err1: - return NULL; -} - -void GfxDeviceNColorSpace::getGray(GfxColor *color, GfxGray *gray) { - double x[gfxColorMaxComps], c[gfxColorMaxComps]; - GfxColor color2; - int i; - - for (i = 0; i < nComps; ++i) { - x[i] = colToDbl(color->c[i]); - } - func->transform(x, c); - for (i = 0; i < alt->getNComps(); ++i) { - color2.c[i] = dblToCol(c[i]); - } - alt->getGray(&color2, gray); -} - -void GfxDeviceNColorSpace::getRGB(GfxColor *color, GfxRGB *rgb) { - double x[gfxColorMaxComps], c[gfxColorMaxComps]; - GfxColor color2; - int i; - - for (i = 0; i < nComps; ++i) { - x[i] = colToDbl(color->c[i]); - } - func->transform(x, c); - for (i = 0; i < alt->getNComps(); ++i) { - color2.c[i] = dblToCol(c[i]); - } - alt->getRGB(&color2, rgb); -} - -void GfxDeviceNColorSpace::getCMYK(GfxColor *color, GfxCMYK *cmyk) { - double x[gfxColorMaxComps], c[gfxColorMaxComps]; - GfxColor color2; - int i; - - for (i = 0; i < nComps; ++i) { - x[i] = colToDbl(color->c[i]); - } - func->transform(x, c); - for (i = 0; i < alt->getNComps(); ++i) { - color2.c[i] = dblToCol(c[i]); - } - alt->getCMYK(&color2, cmyk); -} - -void GfxDeviceNColorSpace::getDefaultColor(GfxColor *color) { - int i; - - for (i = 0; i < nComps; ++i) { - color->c[i] = gfxColorComp1; - } -} - -//------------------------------------------------------------------------ -// GfxPatternColorSpace -//------------------------------------------------------------------------ - -GfxPatternColorSpace::GfxPatternColorSpace(GfxColorSpace *underA) { - under = underA; -} - -GfxPatternColorSpace::~GfxPatternColorSpace() { - if (under) { - delete under; - } -} - -GfxColorSpace *GfxPatternColorSpace::copy() { - return new GfxPatternColorSpace(under ? under->copy() : - (GfxColorSpace *)NULL); -} - -GfxColorSpace *GfxPatternColorSpace::parse(Array *arr) { - GfxPatternColorSpace *cs; - GfxColorSpace *underA; - Object obj1; - - if (arr->getLength() != 1 && arr->getLength() != 2) { - error(-1, "Bad Pattern color space"); - return NULL; - } - underA = NULL; - if (arr->getLength() == 2) { - arr->get(1, &obj1); - if (!(underA = GfxColorSpace::parse(&obj1))) { - error(-1, "Bad Pattern color space (underlying color space)"); - obj1.free(); - return NULL; - } - obj1.free(); - } - cs = new GfxPatternColorSpace(underA); - return cs; -} - -void GfxPatternColorSpace::getGray(GfxColor *color, GfxGray *gray) { - *gray = 0; -} - -void GfxPatternColorSpace::getRGB(GfxColor *color, GfxRGB *rgb) { - rgb->r = rgb->g = rgb->b = 0; -} - -void GfxPatternColorSpace::getCMYK(GfxColor *color, GfxCMYK *cmyk) { - cmyk->c = cmyk->m = cmyk->y = 0; - cmyk->k = 1; -} - -void GfxPatternColorSpace::getDefaultColor(GfxColor *color) { - // not used -} - -//------------------------------------------------------------------------ -// Pattern -//------------------------------------------------------------------------ - -GfxPattern::GfxPattern(int typeA) { - type = typeA; -} - -GfxPattern::~GfxPattern() { -} - -GfxPattern *GfxPattern::parse(Object *obj) { - GfxPattern *pattern; - Object obj1; - - if (obj->isDict()) { - obj->dictLookup("PatternType", &obj1); - } else if (obj->isStream()) { - obj->streamGetDict()->lookup("PatternType", &obj1); - } else { - return NULL; - } - pattern = NULL; - if (obj1.isInt() && obj1.getInt() == 1) { - pattern = GfxTilingPattern::parse(obj); - } else if (obj1.isInt() && obj1.getInt() == 2) { - pattern = GfxShadingPattern::parse(obj); - } - obj1.free(); - return pattern; -} - -//------------------------------------------------------------------------ -// GfxTilingPattern -//------------------------------------------------------------------------ - -GfxTilingPattern *GfxTilingPattern::parse(Object *patObj) { - GfxTilingPattern *pat; - Dict *dict; - int paintTypeA, tilingTypeA; - double bboxA[4], matrixA[6]; - double xStepA, yStepA; - Object resDictA; - Object obj1, obj2; - int i; - - if (!patObj->isStream()) { - return NULL; - } - dict = patObj->streamGetDict(); - - if (dict->lookup("PaintType", &obj1)->isInt()) { - paintTypeA = obj1.getInt(); - } else { - paintTypeA = 1; - error(-1, "Invalid or missing PaintType in pattern"); - } - obj1.free(); - if (dict->lookup("TilingType", &obj1)->isInt()) { - tilingTypeA = obj1.getInt(); - } else { - tilingTypeA = 1; - error(-1, "Invalid or missing TilingType in pattern"); - } - obj1.free(); - bboxA[0] = bboxA[1] = 0; - bboxA[2] = bboxA[3] = 1; - if (dict->lookup("BBox", &obj1)->isArray() && - obj1.arrayGetLength() == 4) { - for (i = 0; i < 4; ++i) { - if (obj1.arrayGet(i, &obj2)->isNum()) { - bboxA[i] = obj2.getNum(); - } - obj2.free(); - } - } else { - error(-1, "Invalid or missing BBox in pattern"); - } - obj1.free(); - if (dict->lookup("XStep", &obj1)->isNum()) { - xStepA = obj1.getNum(); - } else { - xStepA = 1; - error(-1, "Invalid or missing XStep in pattern"); - } - obj1.free(); - if (dict->lookup("YStep", &obj1)->isNum()) { - yStepA = obj1.getNum(); - } else { - yStepA = 1; - error(-1, "Invalid or missing YStep in pattern"); - } - obj1.free(); - if (!dict->lookup("Resources", &resDictA)->isDict()) { - resDictA.free(); - resDictA.initNull(); - error(-1, "Invalid or missing Resources in pattern"); - } - matrixA[0] = 1; matrixA[1] = 0; - matrixA[2] = 0; matrixA[3] = 1; - matrixA[4] = 0; matrixA[5] = 0; - if (dict->lookup("Matrix", &obj1)->isArray() && - obj1.arrayGetLength() == 6) { - for (i = 0; i < 6; ++i) { - if (obj1.arrayGet(i, &obj2)->isNum()) { - matrixA[i] = obj2.getNum(); - } - obj2.free(); - } - } - obj1.free(); - - pat = new GfxTilingPattern(paintTypeA, tilingTypeA, bboxA, xStepA, yStepA, - &resDictA, matrixA, patObj); - resDictA.free(); - return pat; -} - -GfxTilingPattern::GfxTilingPattern(int paintTypeA, int tilingTypeA, - double *bboxA, double xStepA, double yStepA, - Object *resDictA, double *matrixA, - Object *contentStreamA): - GfxPattern(1) -{ - int i; - - paintType = paintTypeA; - tilingType = tilingTypeA; - for (i = 0; i < 4; ++i) { - bbox[i] = bboxA[i]; - } - xStep = xStepA; - yStep = yStepA; - resDictA->copy(&resDict); - for (i = 0; i < 6; ++i) { - matrix[i] = matrixA[i]; - } - contentStreamA->copy(&contentStream); -} - -GfxTilingPattern::~GfxTilingPattern() { - resDict.free(); - contentStream.free(); -} - -GfxPattern *GfxTilingPattern::copy() { - return new GfxTilingPattern(paintType, tilingType, bbox, xStep, yStep, - &resDict, matrix, &contentStream); -} - -//------------------------------------------------------------------------ -// GfxShadingPattern -//------------------------------------------------------------------------ - -GfxShadingPattern *GfxShadingPattern::parse(Object *patObj) { - Dict *dict; - GfxShading *shadingA; - double matrixA[6]; - Object obj1, obj2; - int i; - - if (!patObj->isDict()) { - return NULL; - } - dict = patObj->getDict(); - - dict->lookup("Shading", &obj1); - shadingA = GfxShading::parse(&obj1); - obj1.free(); - if (!shadingA) { - return NULL; - } - - matrixA[0] = 1; matrixA[1] = 0; - matrixA[2] = 0; matrixA[3] = 1; - matrixA[4] = 0; matrixA[5] = 0; - if (dict->lookup("Matrix", &obj1)->isArray() && - obj1.arrayGetLength() == 6) { - for (i = 0; i < 6; ++i) { - if (obj1.arrayGet(i, &obj2)->isNum()) { - matrixA[i] = obj2.getNum(); - } - obj2.free(); - } - } - obj1.free(); - - return new GfxShadingPattern(shadingA, matrixA); -} - -GfxShadingPattern::GfxShadingPattern(GfxShading *shadingA, double *matrixA): - GfxPattern(2) -{ - int i; - - shading = shadingA; - for (i = 0; i < 6; ++i) { - matrix[i] = matrixA[i]; - } -} - -GfxShadingPattern::~GfxShadingPattern() { - delete shading; -} - -GfxPattern *GfxShadingPattern::copy() { - return new GfxShadingPattern(shading->copy(), matrix); -} - -//------------------------------------------------------------------------ -// GfxShading -//------------------------------------------------------------------------ - -GfxShading::GfxShading(int typeA) { - type = typeA; - colorSpace = NULL; -} - -GfxShading::GfxShading(GfxShading *shading) { - int i; - - type = shading->type; - colorSpace = shading->colorSpace->copy(); - for (i = 0; i < gfxColorMaxComps; ++i) { - background.c[i] = shading->background.c[i]; - } - hasBackground = shading->hasBackground; - xMin = shading->xMin; - yMin = shading->yMin; - xMax = shading->xMax; - yMax = shading->yMax; - hasBBox = shading->hasBBox; -} - -GfxShading::~GfxShading() { - if (colorSpace) { - delete colorSpace; - } -} - -GfxShading *GfxShading::parse(Object *obj) { - GfxShading *shading; - Dict *dict; - int typeA; - Object obj1; - - if (obj->isDict()) { - dict = obj->getDict(); - } else if (obj->isStream()) { - dict = obj->streamGetDict(); - } else { - return NULL; - } - - if (!dict->lookup("ShadingType", &obj1)->isInt()) { - error(-1, "Invalid ShadingType in shading dictionary"); - obj1.free(); - return NULL; - } - typeA = obj1.getInt(); - obj1.free(); - - switch (typeA) { - case 1: - shading = GfxFunctionShading::parse(dict); - break; - case 2: - shading = GfxAxialShading::parse(dict); - break; - case 3: - shading = GfxRadialShading::parse(dict); - break; - case 4: - if (obj->isStream()) { - shading = GfxGouraudTriangleShading::parse(4, dict, obj->getStream()); - } else { - error(-1, "Invalid Type 4 shading object"); - goto err1; - } - break; - case 5: - if (obj->isStream()) { - shading = GfxGouraudTriangleShading::parse(5, dict, obj->getStream()); - } else { - error(-1, "Invalid Type 5 shading object"); - goto err1; - } - break; - case 6: - if (obj->isStream()) { - shading = GfxPatchMeshShading::parse(6, dict, obj->getStream()); - } else { - error(-1, "Invalid Type 6 shading object"); - goto err1; - } - break; - case 7: - if (obj->isStream()) { - shading = GfxPatchMeshShading::parse(7, dict, obj->getStream()); - } else { - error(-1, "Invalid Type 7 shading object"); - goto err1; - } - break; - default: - error(-1, "Unimplemented shading type %d", typeA); - goto err1; - } - - return shading; - - err1: - return NULL; -} - -GBool GfxShading::init(Dict *dict) { - Object obj1, obj2; - int i; - - dict->lookup("ColorSpace", &obj1); - if (!(colorSpace = GfxColorSpace::parse(&obj1))) { - error(-1, "Bad color space in shading dictionary"); - obj1.free(); - return gFalse; - } - obj1.free(); - - for (i = 0; i < gfxColorMaxComps; ++i) { - background.c[i] = 0; - } - hasBackground = gFalse; - if (dict->lookup("Background", &obj1)->isArray()) { - if (obj1.arrayGetLength() == colorSpace->getNComps()) { - hasBackground = gTrue; - for (i = 0; i < colorSpace->getNComps(); ++i) { - background.c[i] = dblToCol(obj1.arrayGet(i, &obj2)->getNum()); - obj2.free(); - } - } else { - error(-1, "Bad Background in shading dictionary"); - } - } - obj1.free(); - - xMin = yMin = xMax = yMax = 0; - hasBBox = gFalse; - if (dict->lookup("BBox", &obj1)->isArray()) { - if (obj1.arrayGetLength() == 4) { - hasBBox = gTrue; - xMin = obj1.arrayGet(0, &obj2)->getNum(); - obj2.free(); - yMin = obj1.arrayGet(1, &obj2)->getNum(); - obj2.free(); - xMax = obj1.arrayGet(2, &obj2)->getNum(); - obj2.free(); - yMax = obj1.arrayGet(3, &obj2)->getNum(); - obj2.free(); - } else { - error(-1, "Bad BBox in shading dictionary"); - } - } - obj1.free(); - - return gTrue; -} - -//------------------------------------------------------------------------ -// GfxFunctionShading -//------------------------------------------------------------------------ - -GfxFunctionShading::GfxFunctionShading(double x0A, double y0A, - double x1A, double y1A, - double *matrixA, - Function **funcsA, int nFuncsA): - GfxShading(1) -{ - int i; - - x0 = x0A; - y0 = y0A; - x1 = x1A; - y1 = y1A; - for (i = 0; i < 6; ++i) { - matrix[i] = matrixA[i]; - } - nFuncs = nFuncsA; - for (i = 0; i < nFuncs; ++i) { - funcs[i] = funcsA[i]; - } -} - -GfxFunctionShading::GfxFunctionShading(GfxFunctionShading *shading): - GfxShading(shading) -{ - int i; - - x0 = shading->x0; - y0 = shading->y0; - x1 = shading->x1; - y1 = shading->y1; - for (i = 0; i < 6; ++i) { - matrix[i] = shading->matrix[i]; - } - nFuncs = shading->nFuncs; - for (i = 0; i < nFuncs; ++i) { - funcs[i] = shading->funcs[i]->copy(); - } -} - -GfxFunctionShading::~GfxFunctionShading() { - int i; - - for (i = 0; i < nFuncs; ++i) { - delete funcs[i]; - } -} - -GfxFunctionShading *GfxFunctionShading::parse(Dict *dict) { - GfxFunctionShading *shading; - double x0A, y0A, x1A, y1A; - double matrixA[6]; - Function *funcsA[gfxColorMaxComps]; - int nFuncsA; - Object obj1, obj2; - int i; - - x0A = y0A = 0; - x1A = y1A = 1; - if (dict->lookup("Domain", &obj1)->isArray() && - obj1.arrayGetLength() == 4) { - x0A = obj1.arrayGet(0, &obj2)->getNum(); - obj2.free(); - 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; - Guchar *lookup2; - Function *sepFunc; - Object obj; - double x[gfxColorMaxComps]; - double y[gfxColorMaxComps]; - int i, j, k; - - ok = gTrue; - - // bits per component and color space - bits = bitsA; - maxPixel = (1 << bits) - 1; - colorSpace = colorSpaceA; - - // initialize - for (k = 0; k < gfxColorMaxComps; ++k) { - lookup[k] = NULL; - } - - // get decode map - if (decode->isNull()) { - nComps = colorSpace->getNComps(); - colorSpace->getDefaultRanges(decodeLow, decodeRange, maxPixel); - } else if (decode->isArray()) { - nComps = decode->arrayGetLength() / 2; - if (nComps != colorSpace->getNComps()) { - goto err1; - } - for (i = 0; i < nComps; ++i) { - decode->arrayGet(2*i, &obj); - if (!obj.isNum()) { - goto err2; - } - decodeLow[i] = obj.getNum(); - obj.free(); - decode->arrayGet(2*i+1, &obj); - if (!obj.isNum()) { - goto err2; - } - decodeRange[i] = obj.getNum() - decodeLow[i]; - obj.free(); - } - } else { - goto err1; - } - - // Construct a lookup table -- this stores pre-computed decoded - // values for each component, i.e., the result of applying the - // decode mapping to each possible image pixel component value. - // - // Optimization: for Indexed and Separation color spaces (which have - // only one component), we store color values in the lookup table - // rather than component values. - colorSpace2 = NULL; - nComps2 = 0; - if (colorSpace->getMode() == csIndexed) { - // Note that indexHigh may not be the same as maxPixel -- - // Distiller will remove unused palette entries, resulting in - // indexHigh < maxPixel. - indexedCS = (GfxIndexedColorSpace *)colorSpace; - colorSpace2 = indexedCS->getBase(); - indexHigh = indexedCS->getIndexHigh(); - nComps2 = colorSpace2->getNComps(); - lookup2 = indexedCS->getLookup(); - colorSpace2->getDefaultRanges(x, y, indexHigh); - for (k = 0; k < nComps2; ++k) { - lookup[k] = (GfxColorComp *)gmallocn(maxPixel + 1, - sizeof(GfxColorComp)); - for (i = 0; i <= maxPixel; ++i) { - j = (int)(decodeLow[0] + (i * decodeRange[0]) / maxPixel + 0.5); - if (j < 0) { - j = 0; - } else if (j > indexHigh) { - j = indexHigh; - } - lookup[k][i] = - dblToCol(x[k] + (lookup2[j*nComps2 + k] / 255.0) * y[k]); - } - } - } else if (colorSpace->getMode() == csSeparation) { - sepCS = (GfxSeparationColorSpace *)colorSpace; - colorSpace2 = sepCS->getAlt(); - nComps2 = colorSpace2->getNComps(); - sepFunc = sepCS->getFunc(); - for (k = 0; k < nComps2; ++k) { - lookup[k] = (GfxColorComp *)gmallocn(maxPixel + 1, - sizeof(GfxColorComp)); - for (i = 0; i <= maxPixel; ++i) { - x[0] = decodeLow[0] + (i * decodeRange[0]) / maxPixel; - sepFunc->transform(x, y); - lookup[k][i] = dblToCol(y[k]); - } - } - } else { - for (k = 0; k < nComps; ++k) { - lookup[k] = (GfxColorComp *)gmallocn(maxPixel + 1, - sizeof(GfxColorComp)); - for (i = 0; i <= maxPixel; ++i) { - lookup[k][i] = dblToCol(decodeLow[k] + - (i * decodeRange[k]) / maxPixel); - } - } - } - - return; - - err2: - obj.free(); - err1: - ok = gFalse; -} - -GfxImageColorMap::GfxImageColorMap(GfxImageColorMap *colorMap) { - int n, i, k; - - colorSpace = colorMap->colorSpace->copy(); - bits = colorMap->bits; - nComps = colorMap->nComps; - nComps2 = colorMap->nComps2; - colorSpace2 = NULL; - for (k = 0; k < gfxColorMaxComps; ++k) { - lookup[k] = NULL; - } - n = 1 << bits; - if (colorSpace->getMode() == csIndexed) { - colorSpace2 = ((GfxIndexedColorSpace *)colorSpace)->getBase(); - for (k = 0; k < nComps2; ++k) { - lookup[k] = (GfxColorComp *)gmallocn(n, sizeof(GfxColorComp)); - memcpy(lookup[k], colorMap->lookup[k], n * sizeof(GfxColorComp)); - } - } else if (colorSpace->getMode() == csSeparation) { - colorSpace2 = ((GfxSeparationColorSpace *)colorSpace)->getAlt(); - for (k = 0; k < nComps2; ++k) { - lookup[k] = (GfxColorComp *)gmallocn(n, sizeof(GfxColorComp)); - memcpy(lookup[k], colorMap->lookup[k], n * sizeof(GfxColorComp)); - } - } else { - for (k = 0; k < nComps; ++k) { - lookup[k] = (GfxColorComp *)gmallocn(n, sizeof(GfxColorComp)); - memcpy(lookup[k], colorMap->lookup[k], n * sizeof(GfxColorComp)); - } - } - for (i = 0; i < nComps; ++i) { - decodeLow[i] = colorMap->decodeLow[i]; - decodeRange[i] = colorMap->decodeRange[i]; - } - ok = gTrue; -} - -GfxImageColorMap::~GfxImageColorMap() { - int i; - - delete colorSpace; - for (i = 0; i < gfxColorMaxComps; ++i) { - gfree(lookup[i]); - } -} - -void GfxImageColorMap::getGray(Guchar *x, GfxGray *gray) { - GfxColor color; - int i; - - if (colorSpace2) { - for (i = 0; i < nComps2; ++i) { - color.c[i] = lookup[i][x[0]]; - } - colorSpace2->getGray(&color, gray); - } else { - for (i = 0; i < nComps; ++i) { - color.c[i] = lookup[i][x[i]]; - } - colorSpace->getGray(&color, gray); - } -} - -void GfxImageColorMap::getRGB(Guchar *x, GfxRGB *rgb) { - GfxColor color; - int i; - - if (colorSpace2) { - for (i = 0; i < nComps2; ++i) { - color.c[i] = lookup[i][x[0]]; - } - colorSpace2->getRGB(&color, rgb); - } else { - for (i = 0; i < nComps; ++i) { - color.c[i] = lookup[i][x[i]]; - } - colorSpace->getRGB(&color, rgb); - } -} - -void GfxImageColorMap::getCMYK(Guchar *x, GfxCMYK *cmyk) { - GfxColor color; - int i; - - if (colorSpace2) { - for (i = 0; i < nComps2; ++i) { - color.c[i] = lookup[i][x[0]]; - } - colorSpace2->getCMYK(&color, cmyk); - } else { - for (i = 0; i < nComps; ++i) { - color.c[i] = lookup[i][x[i]]; - } - colorSpace->getCMYK(&color, cmyk); - } -} - -void GfxImageColorMap::getColor(Guchar *x, GfxColor *color) { - int maxPixel, i; - - maxPixel = (1 << bits) - 1; - for (i = 0; i < nComps; ++i) { - color->c[i] = dblToCol(decodeLow[i] + (x[i] * decodeRange[i]) / maxPixel); - } -} - -//------------------------------------------------------------------------ -// GfxSubpath and GfxPath -//------------------------------------------------------------------------ - -GfxSubpath::GfxSubpath(double x1, double y1) { - size = 16; - x = (double *)gmallocn(size, sizeof(double)); - y = (double *)gmallocn(size, sizeof(double)); - curve = (GBool *)gmallocn(size, sizeof(GBool)); - n = 1; - x[0] = x1; - y[0] = y1; - curve[0] = gFalse; - closed = gFalse; -} - -GfxSubpath::~GfxSubpath() { - gfree(x); - gfree(y); - gfree(curve); -} - -// Used for copy(). -GfxSubpath::GfxSubpath(GfxSubpath *subpath) { - size = subpath->size; - n = subpath->n; - x = (double *)gmallocn(size, sizeof(double)); - y = (double *)gmallocn(size, sizeof(double)); - curve = (GBool *)gmallocn(size, sizeof(GBool)); - memcpy(x, subpath->x, n * sizeof(double)); - memcpy(y, subpath->y, n * sizeof(double)); - memcpy(curve, subpath->curve, n * sizeof(GBool)); - closed = subpath->closed; -} - -void GfxSubpath::lineTo(double x1, double y1) { - if (n >= size) { - size += 16; - x = (double *)greallocn(x, size, sizeof(double)); - y = (double *)greallocn(y, size, sizeof(double)); - curve = (GBool *)greallocn(curve, size, sizeof(GBool)); - } - x[n] = x1; - y[n] = y1; - curve[n] = gFalse; - ++n; -} - -void GfxSubpath::curveTo(double x1, double y1, double x2, double y2, - double x3, double y3) { - if (n+3 > size) { - size += 16; - x = (double *)greallocn(x, size, sizeof(double)); - y = (double *)greallocn(y, size, sizeof(double)); - curve = (GBool *)greallocn(curve, size, sizeof(GBool)); - } - x[n] = x1; - y[n] = y1; - x[n+1] = x2; - y[n+1] = y2; - x[n+2] = x3; - y[n+2] = y3; - curve[n] = curve[n+1] = gTrue; - curve[n+2] = gFalse; - n += 3; -} - -void GfxSubpath::close() { - if (x[n-1] != x[0] || y[n-1] != y[0]) { - lineTo(x[0], y[0]); - } - closed = gTrue; -} - -void GfxSubpath::offset(double dx, double dy) { - int i; - - for (i = 0; i < n; ++i) { - x[i] += dx; - y[i] += dy; - } -} - -GfxPath::GfxPath() { - justMoved = gFalse; - size = 16; - n = 0; - firstX = firstY = 0; - subpaths = (GfxSubpath **)gmallocn(size, sizeof(GfxSubpath *)); -} - -GfxPath::~GfxPath() { - int i; - - for (i = 0; i < n; ++i) - delete subpaths[i]; - gfree(subpaths); -} - -// Used for copy(). -GfxPath::GfxPath(GBool justMoved1, double firstX1, double firstY1, - GfxSubpath **subpaths1, int n1, int size1) { - int i; - - justMoved = justMoved1; - firstX = firstX1; - firstY = firstY1; - size = size1; - n = n1; - subpaths = (GfxSubpath **)gmallocn(size, sizeof(GfxSubpath *)); - for (i = 0; i < n; ++i) - subpaths[i] = subpaths1[i]->copy(); -} - -void GfxPath::moveTo(double x, double y) { - justMoved = gTrue; - firstX = x; - firstY = y; -} - -void GfxPath::lineTo(double x, double y) { - if (justMoved) { - if (n >= size) { - size += 16; - subpaths = (GfxSubpath **) - greallocn(subpaths, size, sizeof(GfxSubpath *)); - } - subpaths[n] = new GfxSubpath(firstX, firstY); - ++n; - justMoved = gFalse; - } - subpaths[n-1]->lineTo(x, y); -} - -void GfxPath::curveTo(double x1, double y1, double x2, double y2, - double x3, double y3) { - if (justMoved) { - if (n >= size) { - size += 16; - subpaths = (GfxSubpath **) - greallocn(subpaths, size, sizeof(GfxSubpath *)); - } - subpaths[n] = new GfxSubpath(firstX, firstY); - ++n; - justMoved = gFalse; - } - subpaths[n-1]->curveTo(x1, y1, x2, y2, x3, y3); -} - -void GfxPath::close() { - // this is necessary to handle the pathological case of - // moveto/closepath/clip, which defines an empty clipping region - if (justMoved) { - if (n >= size) { - size += 16; - subpaths = (GfxSubpath **) - greallocn(subpaths, size, sizeof(GfxSubpath *)); - } - subpaths[n] = new GfxSubpath(firstX, firstY); - ++n; - justMoved = gFalse; - } - subpaths[n-1]->close(); -} - -void GfxPath::append(GfxPath *path) { - int i; - - if (n + path->n > size) { - size = n + path->n; - subpaths = (GfxSubpath **) - greallocn(subpaths, size, sizeof(GfxSubpath *)); - } - for (i = 0; i < path->n; ++i) { - subpaths[n++] = path->subpaths[i]->copy(); - } - justMoved = gFalse; -} - -void GfxPath::offset(double dx, double dy) { - int i; - - for (i = 0; i < n; ++i) { - subpaths[i]->offset(dx, dy); - } -} - -//------------------------------------------------------------------------ -// GfxState -//------------------------------------------------------------------------ - -GfxState::GfxState(double hDPIA, double vDPIA, PDFRectangle *pageBox, - int rotateA, GBool upsideDown) { - double kx, ky; - - hDPI = hDPIA; - vDPI = vDPIA; - rotate = rotateA; - px1 = pageBox->x1; - py1 = pageBox->y1; - px2 = pageBox->x2; - py2 = pageBox->y2; - kx = hDPI / 72.0; - ky = vDPI / 72.0; - if (rotate == 90) { - ctm[0] = 0; - ctm[1] = upsideDown ? ky : -ky; - ctm[2] = kx; - ctm[3] = 0; - ctm[4] = -kx * py1; - ctm[5] = ky * (upsideDown ? -px1 : px2); - pageWidth = kx * (py2 - py1); - pageHeight = ky * (px2 - px1); - } else if (rotate == 180) { - ctm[0] = -kx; - ctm[1] = 0; - ctm[2] = 0; - ctm[3] = upsideDown ? ky : -ky; - ctm[4] = kx * px2; - ctm[5] = ky * (upsideDown ? -py1 : py2); - pageWidth = kx * (px2 - px1); - pageHeight = ky * (py2 - py1); - } else if (rotate == 270) { - ctm[0] = 0; - ctm[1] = upsideDown ? -ky : ky; - ctm[2] = -kx; - ctm[3] = 0; - ctm[4] = kx * py2; - ctm[5] = ky * (upsideDown ? px2 : -px1); - pageWidth = kx * (py2 - py1); - pageHeight = ky * (px2 - px1); - } else { - ctm[0] = kx; - ctm[1] = 0; - ctm[2] = 0; - ctm[3] = upsideDown ? -ky : ky; - ctm[4] = -kx * px1; - ctm[5] = ky * (upsideDown ? py2 : -py1); - pageWidth = kx * (px2 - px1); - pageHeight = ky * (py2 - py1); - } - - fillColorSpace = new GfxDeviceGrayColorSpace(); - strokeColorSpace = new GfxDeviceGrayColorSpace(); - fillColor.c[0] = 0; - strokeColor.c[0] = 0; - fillPattern = NULL; - strokePattern = NULL; - blendMode = gfxBlendNormal; - fillOpacity = 1; - strokeOpacity = 1; - fillOverprint = gFalse; - strokeOverprint = gFalse; - transfer[0] = transfer[1] = transfer[2] = transfer[3] = NULL; - - lineWidth = 1; - lineDash = NULL; - lineDashLength = 0; - lineDashStart = 0; - flatness = 1; - lineJoin = 0; - lineCap = 0; - miterLimit = 10; - strokeAdjust = gFalse; - - font = NULL; - fontSize = 0; - textMat[0] = 1; textMat[1] = 0; - textMat[2] = 0; textMat[3] = 1; - textMat[4] = 0; textMat[5] = 0; - charSpace = 0; - wordSpace = 0; - horizScaling = 1; - leading = 0; - rise = 0; - render = 0; - - path = new GfxPath(); - curX = curY = 0; - lineX = lineY = 0; - - clipXMin = 0; - clipYMin = 0; - clipXMax = pageWidth; - clipYMax = pageHeight; - - saved = NULL; -} - -GfxState::~GfxState() { - int i; - - if (fillColorSpace) { - delete fillColorSpace; - } - if (strokeColorSpace) { - delete strokeColorSpace; - } - if (fillPattern) { - delete fillPattern; - } - if (strokePattern) { - delete strokePattern; - } - for (i = 0; i < 4; ++i) { - if (transfer[i]) { - delete transfer[i]; - } - } - gfree(lineDash); - if (path) { - // this gets set to NULL by restore() - delete path; - } - if (saved) { - delete saved; - } -} - -// Used for copy(); -GfxState::GfxState(GfxState *state) { - int i; - - memcpy(this, state, sizeof(GfxState)); - if (fillColorSpace) { - fillColorSpace = state->fillColorSpace->copy(); - } - if (strokeColorSpace) { - strokeColorSpace = state->strokeColorSpace->copy(); - } - if (fillPattern) { - fillPattern = state->fillPattern->copy(); - } - if (strokePattern) { - strokePattern = state->strokePattern->copy(); - } - for (i = 0; i < 4; ++i) { - if (transfer[i]) { - transfer[i] = state->transfer[i]->copy(); - } - } - if (lineDashLength > 0) { - lineDash = (double *)gmallocn(lineDashLength, sizeof(double)); - memcpy(lineDash, state->lineDash, lineDashLength * sizeof(double)); - } - saved = NULL; -} - -void GfxState::setPath(GfxPath *pathA) { - delete path; - path = pathA; -} - -void GfxState::getUserClipBBox(double *xMin, double *yMin, - double *xMax, double *yMax) { - double ictm[6]; - double xMin1, yMin1, xMax1, yMax1, det, tx, ty; - - // invert the CTM - det = 1 / (ctm[0] * ctm[3] - ctm[1] * ctm[2]); - ictm[0] = ctm[3] * det; - ictm[1] = -ctm[1] * det; - ictm[2] = -ctm[2] * det; - ictm[3] = ctm[0] * det; - ictm[4] = (ctm[2] * ctm[5] - ctm[3] * ctm[4]) * det; - ictm[5] = (ctm[1] * ctm[4] - ctm[0] * ctm[5]) * det; - - // transform all four corners of the clip bbox; find the min and max - // x and y values - xMin1 = xMax1 = clipXMin * ictm[0] + clipYMin * ictm[2] + ictm[4]; - yMin1 = yMax1 = clipXMin * ictm[1] + clipYMin * ictm[3] + ictm[5]; - tx = clipXMin * ictm[0] + clipYMax * ictm[2] + ictm[4]; - ty = clipXMin * ictm[1] + clipYMax * ictm[3] + ictm[5]; - if (tx < xMin1) { - xMin1 = tx; - } else if (tx > xMax1) { - xMax1 = tx; - } - if (ty < yMin1) { - yMin1 = ty; - } else if (ty > yMax1) { - yMax1 = ty; - } - tx = clipXMax * ictm[0] + clipYMin * ictm[2] + ictm[4]; - ty = clipXMax * ictm[1] + clipYMin * ictm[3] + ictm[5]; - if (tx < xMin1) { - xMin1 = tx; - } else if (tx > xMax1) { - xMax1 = tx; - } - if (ty < yMin1) { - yMin1 = ty; - } else if (ty > yMax1) { - yMax1 = ty; - } - tx = clipXMax * ictm[0] + clipYMax * ictm[2] + ictm[4]; - ty = clipXMax * ictm[1] + clipYMax * ictm[3] + ictm[5]; - if (tx < xMin1) { - xMin1 = tx; - } else if (tx > xMax1) { - xMax1 = tx; - } - if (ty < yMin1) { - yMin1 = ty; - } else if (ty > yMax1) { - yMax1 = ty; - } - - *xMin = xMin1; - *yMin = yMin1; - *xMax = xMax1; - *yMax = yMax1; -} - -double GfxState::transformWidth(double w) { - double x, y; - - x = ctm[0] + ctm[2]; - y = ctm[1] + ctm[3]; - return w * sqrt(0.5 * (x * x + y * y)); -} - -double GfxState::getTransformedFontSize() { - double x1, y1, x2, y2; - - x1 = textMat[2] * fontSize; - y1 = textMat[3] * fontSize; - x2 = ctm[0] * x1 + ctm[2] * y1; - y2 = ctm[1] * x1 + ctm[3] * y1; - return sqrt(x2 * x2 + y2 * y2); -} - -void GfxState::getFontTransMat(double *m11, double *m12, - double *m21, double *m22) { - *m11 = (textMat[0] * ctm[0] + textMat[1] * ctm[2]) * fontSize; - *m12 = (textMat[0] * ctm[1] + textMat[1] * ctm[3]) * fontSize; - *m21 = (textMat[2] * ctm[0] + textMat[3] * ctm[2]) * fontSize; - *m22 = (textMat[2] * ctm[1] + textMat[3] * ctm[3]) * fontSize; -} - -void GfxState::setCTM(double a, double b, double c, - double d, double e, double f) { - int i; - - ctm[0] = a; - ctm[1] = b; - ctm[2] = c; - ctm[3] = d; - ctm[4] = e; - ctm[5] = f; - - // avoid FP exceptions on badly messed up PDF files - for (i = 0; i < 6; ++i) { - if (ctm[i] > 1e10) { - ctm[i] = 1e10; - } else if (ctm[i] < -1e10) { - ctm[i] = -1e10; - } - } -} - -void GfxState::concatCTM(double a, double b, double c, - double d, double e, double f) { - double a1 = ctm[0]; - double b1 = ctm[1]; - double c1 = ctm[2]; - double d1 = ctm[3]; - int i; - - ctm[0] = a * a1 + b * c1; - ctm[1] = a * b1 + b * d1; - ctm[2] = c * a1 + d * c1; - ctm[3] = c * b1 + d * d1; - ctm[4] = e * a1 + f * c1 + ctm[4]; - ctm[5] = e * b1 + f * d1 + ctm[5]; - - // avoid FP exceptions on badly messed up PDF files - for (i = 0; i < 6; ++i) { - if (ctm[i] > 1e10) { - ctm[i] = 1e10; - } else if (ctm[i] < -1e10) { - ctm[i] = -1e10; - } - } -} - -void GfxState::shiftCTM(double tx, double ty) { - ctm[4] += tx; - ctm[5] += ty; - clipXMin += tx; - clipYMin += ty; - clipXMax += tx; - clipYMax += ty; -} - -void GfxState::setFillColorSpace(GfxColorSpace *colorSpace) { - if (fillColorSpace) { - delete fillColorSpace; - } - fillColorSpace = colorSpace; -} - -void GfxState::setStrokeColorSpace(GfxColorSpace *colorSpace) { - if (strokeColorSpace) { - delete strokeColorSpace; - } - strokeColorSpace = colorSpace; -} - -void GfxState::setFillPattern(GfxPattern *pattern) { - if (fillPattern) { - delete fillPattern; - } - fillPattern = pattern; -} - -void GfxState::setStrokePattern(GfxPattern *pattern) { - if (strokePattern) { - delete strokePattern; - } - strokePattern = pattern; -} - -void GfxState::setTransfer(Function **funcs) { - int i; - - for (i = 0; i < 4; ++i) { - if (transfer[i]) { - delete transfer[i]; - } - transfer[i] = funcs[i]; - } -} - -void GfxState::setLineDash(double *dash, int length, double start) { - if (lineDash) - gfree(lineDash); - lineDash = dash; - lineDashLength = length; - lineDashStart = start; -} - -void GfxState::clearPath() { - delete path; - path = new GfxPath(); -} - -void GfxState::clip() { - double xMin, yMin, xMax, yMax, x, y; - GfxSubpath *subpath; - int i, j; - - xMin = xMax = yMin = yMax = 0; // make gcc happy - for (i = 0; i < path->getNumSubpaths(); ++i) { - subpath = path->getSubpath(i); - for (j = 0; j < subpath->getNumPoints(); ++j) { - transform(subpath->getX(j), subpath->getY(j), &x, &y); - if (i == 0 && j == 0) { - xMin = xMax = x; - yMin = yMax = y; - } else { - if (x < xMin) { - xMin = x; - } else if (x > xMax) { - xMax = x; - } - if (y < yMin) { - yMin = y; - } else if (y > yMax) { - yMax = y; - } - } - } - } - if (xMin > clipXMin) { - clipXMin = xMin; - } - if (yMin > clipYMin) { - clipYMin = yMin; - } - if (xMax < clipXMax) { - clipXMax = xMax; - } - if (yMax < clipYMax) { - clipYMax = yMax; - } -} - -void GfxState::clipToStrokePath() { - double xMin, yMin, xMax, yMax, x, y, t0, t1; - GfxSubpath *subpath; - int i, j; - - xMin = xMax = yMin = yMax = 0; // make gcc happy - for (i = 0; i < path->getNumSubpaths(); ++i) { - subpath = path->getSubpath(i); - for (j = 0; j < subpath->getNumPoints(); ++j) { - transform(subpath->getX(j), subpath->getY(j), &x, &y); - if (i == 0 && j == 0) { - xMin = xMax = x; - yMin = yMax = y; - } else { - if (x < xMin) { - xMin = x; - } else if (x > xMax) { - xMax = x; - } - if (y < yMin) { - yMin = y; - } else if (y > yMax) { - yMax = y; - } - } - } - } - - // allow for the line width - //~ miter joins can extend farther than this - t0 = fabs(ctm[0]); - t1 = fabs(ctm[2]); - if (t0 > t1) { - xMin -= 0.5 * lineWidth * t0; - xMax += 0.5 * lineWidth * t0; - } else { - xMin -= 0.5 * lineWidth * t1; - xMax += 0.5 * lineWidth * t1; - } - t0 = fabs(ctm[0]); - t1 = fabs(ctm[3]); - if (t0 > t1) { - yMin -= 0.5 * lineWidth * t0; - yMax += 0.5 * lineWidth * t0; - } else { - yMin -= 0.5 * lineWidth * t1; - yMax += 0.5 * lineWidth * t1; - } - - if (xMin > clipXMin) { - clipXMin = xMin; - } - if (yMin > clipYMin) { - clipYMin = yMin; - } - if (xMax < clipXMax) { - clipXMax = xMax; - } - if (yMax < clipYMax) { - clipYMax = yMax; - } -} - -void GfxState::textShift(double tx, double ty) { - double dx, dy; - - textTransformDelta(tx, ty, &dx, &dy); - curX += dx; - curY += dy; -} - -void GfxState::shift(double dx, double dy) { - curX += dx; - curY += dy; -} - -GfxState *GfxState::save() { - GfxState *newState; - - newState = copy(); - newState->saved = this; - return newState; -} - -GfxState *GfxState::restore() { - GfxState *oldState; - - if (saved) { - oldState = saved; - - // these attributes aren't saved/restored by the q/Q operators - oldState->path = path; - oldState->curX = curX; - oldState->curY = curY; - oldState->lineX = lineX; - oldState->lineY = lineY; - - path = NULL; - saved = NULL; - delete this; - - } else { - oldState = this; - } - - return oldState; -} - -GBool GfxState::parseBlendMode(Object *obj, GfxBlendMode *mode) { - Object obj2; - int i, j; - - if (obj->isName()) { - for (i = 0; i < nGfxBlendModeNames; ++i) { - if (!strcmp(obj->getName(), gfxBlendModeNames[i].name)) { - *mode = gfxBlendModeNames[i].mode; - return gTrue; - } - } - return gFalse; - } else if (obj->isArray()) { - for (i = 0; i < obj->arrayGetLength(); ++i) { - obj->arrayGet(i, &obj2); - if (!obj2.isName()) { - obj2.free(); - return gFalse; - } - for (j = 0; j < nGfxBlendModeNames; ++j) { - if (!strcmp(obj2.getName(), gfxBlendModeNames[j].name)) { - obj2.free(); - *mode = gfxBlendModeNames[j].mode; - return gTrue; - } - } - obj2.free(); - } - *mode = gfxBlendNormal; - return gTrue; - } else { - return gFalse; - } -} |