//
// GfxState.cc
//
-// Copyright 1996-2002 Glyph & Cog, LLC
+// Copyright 1996-2003 Glyph & Cog, LLC
//
//========================================================================
-#ifdef __GNUC__
+#include <aconf.h>
+
+#ifdef USE_GCC_PRAGMAS
#pragma implementation
#endif
-#include <aconf.h>
#include <stddef.h>
#include <math.h>
#include <string.h> // for memcpy()
}
//------------------------------------------------------------------------
+
+static char *gfxColorSpaceModeNames[] = {
+ "DeviceGray",
+ "CalGray",
+ "DeviceRGB",
+ "CalRGB",
+ "DeviceCMYK",
+ "Lab",
+ "ICCBased",
+ "Indexed",
+ "Separation",
+ "DeviceN",
+ "Pattern"
+};
+
+#define nGfxColorSpaceModes ((sizeof(gfxColorSpaceModeNames) / sizeof(char *)))
+
+//------------------------------------------------------------------------
// GfxColorSpace
//------------------------------------------------------------------------
} else if (obj1.isName("Pattern")) {
cs = GfxPatternColorSpace::parse(csObj->getArray());
} else {
- error(-1, "Bad color space '%s'", csObj->getName());
+ error(-1, "Bad color space");
}
obj1.free();
} else {
}
}
+int GfxColorSpace::getNumColorSpaceModes() {
+ return nGfxColorSpaceModes;
+}
+
+char *GfxColorSpace::getColorSpaceModeName(int idx) {
+ return gfxColorSpaceModeNames[idx];
+}
+
//------------------------------------------------------------------------
// GfxDeviceGrayColorSpace
//------------------------------------------------------------------------
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
}
//------------------------------------------------------------------------
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);
return NULL;
}
-void GfxIndexedColorSpace::getGray(GfxColor *color, double *gray) {
+GfxColor *GfxIndexedColorSpace::mapColorToBase(GfxColor *color,
+ GfxColor *baseColor) {
Guchar *p;
- GfxColor color2;
+ double low[gfxColorMaxComps], range[gfxColorMaxComps];
int n, i;
n = base->getNComps();
+ base->getDefaultRanges(low, range, indexHigh);
p = &lookup[(int)(color->c[0] + 0.5) * n];
for (i = 0; i < n; ++i) {
- color2.c[i] = p[i] / 255.0;
+ baseColor->c[i] = low[i] + (p[i] / 255.0) * range[i];
}
- base->getGray(&color2, gray);
+ return baseColor;
+}
+
+void GfxIndexedColorSpace::getGray(GfxColor *color, double *gray) {
+ GfxColor color2;
+
+ base->getGray(mapColorToBase(color, &color2), gray);
}
void GfxIndexedColorSpace::getRGB(GfxColor *color, GfxRGB *rgb) {
- Guchar *p;
GfxColor color2;
- int n, i;
- n = base->getNComps();
- p = &lookup[(int)(color->c[0] + 0.5) * n];
- for (i = 0; i < n; ++i) {
- color2.c[i] = p[i] / 255.0;
- }
- base->getRGB(&color2, rgb);
+ base->getRGB(mapColorToBase(color, &color2), rgb);
}
void GfxIndexedColorSpace::getCMYK(GfxColor *color, GfxCMYK *cmyk) {
- Guchar *p;
GfxColor color2;
- int n, i;
- n = base->getNComps();
- p = &lookup[(int)(color->c[0] + 0.5) * n];
- for (i = 0; i < n; ++i) {
- color2.c[i] = p[i] / 255.0;
- }
- base->getCMYK(&color2, cmyk);
+ base->getCMYK(mapColorToBase(color, &color2), cmyk);
}
void GfxIndexedColorSpace::getDefaultRanges(double *decodeLow,
goto err2;
}
nCompsA = obj1.arrayGetLength();
+ if (nCompsA > gfxColorMaxComps) {
+ error(-1, "DeviceN color space with more than %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)");
GfxPattern *GfxPattern::parse(Object *obj) {
GfxPattern *pattern;
- Dict *dict;
Object obj1;
+ if (obj->isDict()) {
+ obj->dictLookup("PatternType", &obj1);
+ } else if (obj->isStream()) {
+ obj->streamGetDict()->lookup("PatternType", &obj1);
+ } else {
+ return NULL;
+ }
pattern = NULL;
- if (obj->isStream()) {
- dict = obj->streamGetDict();
- dict->lookup("PatternType", &obj1);
- if (obj1.isInt() && obj1.getInt() == 1) {
- pattern = new GfxTilingPattern(dict, obj);
- }
- obj1.free();
+ 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(Dict *streamDict, Object *stream):
- GfxPattern(1)
-{
+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 (streamDict->lookup("PaintType", &obj1)->isInt()) {
- paintType = obj1.getInt();
+ if (!patObj->isStream()) {
+ return NULL;
+ }
+ dict = patObj->streamGetDict();
+
+ if (dict->lookup("PaintType", &obj1)->isInt()) {
+ paintTypeA = obj1.getInt();
} else {
- paintType = 1;
+ paintTypeA = 1;
error(-1, "Invalid or missing PaintType in pattern");
}
obj1.free();
- if (streamDict->lookup("TilingType", &obj1)->isInt()) {
- tilingType = obj1.getInt();
+ if (dict->lookup("TilingType", &obj1)->isInt()) {
+ tilingTypeA = obj1.getInt();
} else {
- tilingType = 1;
+ tilingTypeA = 1;
error(-1, "Invalid or missing TilingType in pattern");
}
obj1.free();
- bbox[0] = bbox[1] = 0;
- bbox[2] = bbox[3] = 1;
- if (streamDict->lookup("BBox", &obj1)->isArray() &&
+ 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()) {
- bbox[i] = obj2.getNum();
+ bboxA[i] = obj2.getNum();
}
obj2.free();
}
error(-1, "Invalid or missing BBox in pattern");
}
obj1.free();
- if (streamDict->lookup("XStep", &obj1)->isNum()) {
- xStep = obj1.getNum();
+ if (dict->lookup("XStep", &obj1)->isNum()) {
+ xStepA = obj1.getNum();
} else {
- xStep = 1;
+ xStepA = 1;
error(-1, "Invalid or missing XStep in pattern");
}
obj1.free();
- if (streamDict->lookup("YStep", &obj1)->isNum()) {
- yStep = obj1.getNum();
+ if (dict->lookup("YStep", &obj1)->isNum()) {
+ yStepA = obj1.getNum();
} else {
- yStep = 1;
+ yStepA = 1;
error(-1, "Invalid or missing YStep in pattern");
}
obj1.free();
- if (!streamDict->lookup("Resources", &resDict)->isDict()) {
- resDict.free();
- resDict.initNull();
+ if (!dict->lookup("Resources", &resDictA)->isDict()) {
+ resDictA.free();
+ resDictA.initNull();
error(-1, "Invalid or missing Resources in pattern");
}
- matrix[0] = 1; matrix[1] = 0;
- matrix[2] = 0; matrix[3] = 1;
- matrix[4] = 0; matrix[5] = 0;
- if (streamDict->lookup("Matrix", &obj1)->isArray() &&
+ 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()) {
- matrix[i] = obj2.getNum();
+ matrixA[i] = obj2.getNum();
}
obj2.free();
}
}
obj1.free();
- stream->copy(&contentStream);
+
+ 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() {
}
GfxPattern *GfxTilingPattern::copy() {
- return new GfxTilingPattern(this);
+ return new GfxTilingPattern(paintType, tilingType, bbox, xStep, yStep,
+ &resDict, matrix, &contentStream);
}
-GfxTilingPattern::GfxTilingPattern(GfxTilingPattern *pat):
- GfxPattern(1)
+//------------------------------------------------------------------------
+// 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)
{
- memcpy(this, pat, sizeof(GfxTilingPattern));
- pat->resDict.copy(&resDict);
- pat->contentStream.copy(&contentStream);
+ 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() {
+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() {
- delete colorSpace;
+ if (colorSpace) {
+ delete colorSpace;
+ }
}
GfxShading *GfxShading::parse(Object *obj) {
GfxShading *shading;
+ Dict *dict;
int typeA;
- GfxColorSpace *colorSpaceA;
- GfxColor backgroundA;
- GBool hasBackgroundA;
- double xMinA, yMinA, xMaxA, yMaxA;
- GBool hasBBoxA;
- Object obj1, obj2;
- int i;
+ Object obj1;
- shading = NULL;
if (obj->isDict()) {
+ dict = obj->getDict();
+ } else if (obj->isStream()) {
+ dict = obj->streamGetDict();
+ } else {
+ return NULL;
+ }
- if (!obj->dictLookup("ShadingType", &obj1)->isInt()) {
- error(-1, "Invalid ShadingType in shading dictionary");
- obj1.free();
- goto err1;
- }
- typeA = obj1.getInt();
+ if (!dict->lookup("ShadingType", &obj1)->isInt()) {
+ error(-1, "Invalid ShadingType in shading dictionary");
obj1.free();
+ return NULL;
+ }
+ typeA = obj1.getInt();
+ obj1.free();
- obj->dictLookup("ColorSpace", &obj1);
- if (!(colorSpaceA = GfxColorSpace::parse(&obj1))) {
- error(-1, "Bad color space in shading dictionary");
- obj1.free();
- goto err1;
- }
- obj1.free();
+ switch (typeA) {
+ case 1:
+ shading = GfxFunctionShading::parse(dict);
+ break;
+ case 2:
+ shading = GfxAxialShading::parse(dict);
+ break;
+ case 3:
+ shading = GfxRadialShading::parse(dict);
+ break;
+ default:
+ error(-1, "Unimplemented shading type %d", typeA);
+ goto err1;
+ }
- for (i = 0; i < gfxColorMaxComps; ++i) {
- backgroundA.c[i] = 0;
- }
- hasBackgroundA = gFalse;
- if (obj->dictLookup("Background", &obj1)->isArray()) {
- if (obj1.arrayGetLength() == colorSpaceA->getNComps()) {
- hasBackgroundA = gTrue;
- for (i = 0; i < colorSpaceA->getNComps(); ++i) {
- backgroundA.c[i] = obj1.arrayGet(i, &obj2)->getNum();
- obj2.free();
- }
- } else {
- error(-1, "Bad Background in shading dictionary");
- }
- }
+ 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();
- xMinA = yMinA = xMaxA = yMaxA = 0;
- hasBBoxA = gFalse;
- if (obj->dictLookup("BBox", &obj1)->isArray()) {
- if (obj1.arrayGetLength() == 4) {
- hasBBoxA = gTrue;
- xMinA = obj1.arrayGet(0, &obj2)->getNum();
- obj2.free();
- yMinA = obj1.arrayGet(1, &obj2)->getNum();
- obj2.free();
- xMaxA = obj1.arrayGet(2, &obj2)->getNum();
- obj2.free();
- yMaxA = obj1.arrayGet(3, &obj2)->getNum();
+ 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] = obj1.arrayGet(i, &obj2)->getNum();
obj2.free();
- } else {
- error(-1, "Bad BBox in shading dictionary");
}
+ } else {
+ error(-1, "Bad Background in shading dictionary");
}
- obj1.free();
+ }
+ obj1.free();
- switch (typeA) {
- case 2:
- shading = GfxAxialShading::parse(obj->getDict());
- break;
- case 3:
- shading = GfxRadialShading::parse(obj->getDict());
- break;
- default:
- error(-1, "Unimplemented shading type %d", typeA);
- goto err1;
+ 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();
- if (shading) {
- shading->type = typeA;
- shading->colorSpace = colorSpaceA;
- shading->background = backgroundA;
- shading->hasBackground = hasBackgroundA;
- shading->xMin = xMinA;
- shading->yMin = yMinA;
- shading->xMax = xMaxA;
- shading->yMax = yMaxA;
- shading->hasBBox = hasBBoxA;
- } else {
- delete colorSpaceA;
+ return 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];
+ int i;
+
+ in[0] = x;
+ in[1] = y;
+ for (i = 0; i < nFuncs; ++i) {
+ funcs[i]->transform(in, &color->c[i]);
+ }
+}
+
//------------------------------------------------------------------------
// GfxAxialShading
//------------------------------------------------------------------------
double x1A, double y1A,
double t0A, double t1A,
Function **funcsA, int nFuncsA,
- GBool extend0A, GBool extend1A) {
+ GBool extend0A, GBool extend1A):
+ GfxShading(2)
+{
int i;
x0 = x0A;
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;
}
GfxAxialShading *GfxAxialShading::parse(Dict *dict) {
+ GfxAxialShading *shading;
double x0A, y0A, x1A, y1A;
double t0A, t1A;
Function *funcsA[gfxColorMaxComps];
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();
- return new GfxAxialShading(x0A, y0A, x1A, y1A, t0A, t1A,
- funcsA, nFuncsA, extend0A, extend1A);
+ 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) {
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 < nFuncs; ++i) {
funcs[i]->transform(&t, &color->c[i]);
}
double x1A, double y1A, double r1A,
double t0A, double t1A,
Function **funcsA, int nFuncsA,
- GBool extend0A, GBool extend1A) {
+ GBool extend0A, GBool extend1A):
+ GfxShading(3)
+{
int i;
x0 = x0A;
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;
}
GfxRadialShading *GfxRadialShading::parse(Dict *dict) {
+ GfxRadialShading *shading;
double x0A, y0A, r0A, x1A, y1A, r1A;
double t0A, t1A;
Function *funcsA[gfxColorMaxComps];
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();
- return new GfxRadialShading(x0A, y0A, r0A, x1A, y1A, r1A, t0A, t1A,
- funcsA, nFuncsA, extend0A, extend1A);
+ 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) {
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 < nFuncs; ++i) {
funcs[i]->transform(&t, &color->c[i]);
}
double x[gfxColorMaxComps];
double y[gfxColorMaxComps];
int i, j, k;
- int maxPixelForAlloc;
ok = gTrue;
// bits per component and color space
bits = bitsA;
maxPixel = (1 << bits) - 1;
- maxPixelForAlloc = (1 << (bits>8?bits:8));
colorSpace = colorSpaceA;
// get decode map
colorSpace2 = indexedCS->getBase();
indexHigh = indexedCS->getIndexHigh();
nComps2 = colorSpace2->getNComps();
- lookup = (double *)gmalloc((maxPixelForAlloc + 1) * nComps2 * sizeof(double));
+ lookup = (double *)gmalloc((maxPixel + 1) * nComps2 * sizeof(double));
lookup2 = indexedCS->getLookup();
- for (i = 0; i <= indexHigh; ++i) {
- j = (int)(decodeLow[0] +(i * decodeRange[0]) / maxPixel + 0.5);
+ colorSpace2->getDefaultRanges(x, y, indexHigh);
+ 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;
+ }
for (k = 0; k < nComps2; ++k) {
- lookup[i*nComps2 + k] = lookup2[i*nComps2 + k] / 255.0;
+ lookup[i*nComps2 + k] = x[k] + (lookup2[j*nComps2 + k] / 255.0) * y[k];
}
}
} else if (colorSpace->getMode() == csSeparation) {
sepCS = (GfxSeparationColorSpace *)colorSpace;
colorSpace2 = sepCS->getAlt();
nComps2 = colorSpace2->getNComps();
- lookup = (double *)gmalloc((maxPixelForAlloc + 1) * nComps2 * sizeof(double));
+ lookup = (double *)gmalloc((maxPixel + 1) * nComps2 * sizeof(double));
sepFunc = sepCS->getFunc();
for (i = 0; i <= maxPixel; ++i) {
x[0] = decodeLow[0] + (i * decodeRange[0]) / maxPixel;
}
}
} else {
- lookup = (double *)gmalloc((maxPixelForAlloc + 1) * nComps * sizeof(double));
+ lookup = (double *)gmalloc((maxPixel + 1) * nComps * sizeof(double));
for (i = 0; i <= maxPixel; ++i) {
for (k = 0; k < nComps; ++k) {
lookup[i*nComps + k] = decodeLow[k] +
ok = gFalse;
}
+GfxImageColorMap::GfxImageColorMap(GfxImageColorMap *colorMap) {
+ int n, i;
+
+ colorSpace = colorMap->colorSpace->copy();
+ bits = colorMap->bits;
+ nComps = colorMap->nComps;
+ nComps2 = colorMap->nComps2;
+ colorSpace2 = NULL;
+ lookup = NULL;
+ n = 1 << bits;
+ if (colorSpace->getMode() == csIndexed) {
+ colorSpace2 = ((GfxIndexedColorSpace *)colorSpace)->getBase();
+ n = n * nComps2 * sizeof(double);
+ } else if (colorSpace->getMode() == csSeparation) {
+ colorSpace2 = ((GfxSeparationColorSpace *)colorSpace)->getAlt();
+ n = n * nComps2 * sizeof(double);
+ } else {
+ n = n * nComps * sizeof(double);
+ }
+ lookup = (double *)gmalloc(n);
+ memcpy(lookup, colorMap->lookup, n);
+ for (i = 0; i < nComps; ++i) {
+ decodeLow[i] = colorMap->decodeLow[i];
+ decodeRange[i] = colorMap->decodeRange[i];
+ }
+ ok = gTrue;
+}
+
GfxImageColorMap::~GfxImageColorMap() {
delete colorSpace;
gfree(lookup);
}
void GfxImageColorMap::getRGB(Guchar *x, GfxRGB *rgb) {
-
GfxColor color;
double *p;
int i;
if (colorSpace2) {
- //printf("lookup[%d] bits=%d\n",x[0],bits);fflush(stdout);
p = &lookup[x[0] * nComps2];
for (i = 0; i < nComps2; ++i) {
color.c[i] = *p++;
}
colorSpace2->getRGB(&color, rgb);
} else {
- //printf("for i=0,i<%d, bits=%d\n",nComps,bits);fflush(stdout);
for (i = 0; i < nComps; ++i) {
color.c[i] = lookup[x[i] * nComps + i];
}
}
}
+void GfxImageColorMap::getColor(Guchar *x, GfxColor *color) {
+ int maxPixel, i;
+
+ maxPixel = (1 << bits) - 1;
+ for (i = 0; i < nComps; ++i) {
+ color->c[i] = decodeLow[i] + (x[i] * decodeRange[i]) / maxPixel;
+ }
+}
+
//------------------------------------------------------------------------
// GfxSubpath and GfxPath
//------------------------------------------------------------------------
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;
subpaths[n-1]->close();
}
+void GfxPath::append(GfxPath *path) {
+ int i;
+
+ if (n + path->n > size) {
+ size = n + path->n;
+ subpaths = (GfxSubpath **)
+ grealloc(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 dpi, PDFRectangle *pageBox, int rotate,
- GBool upsideDown) {
- double k;
+GfxState::GfxState(double hDPI, double vDPI, PDFRectangle *pageBox,
+ int rotate, GBool upsideDown) {
+ double kx, ky;
px1 = pageBox->x1;
py1 = pageBox->y1;
px2 = pageBox->x2;
py2 = pageBox->y2;
- k = dpi / 72.0;
+ kx = hDPI / 72.0;
+ ky = vDPI / 72.0;
if (rotate == 90) {
ctm[0] = 0;
- ctm[1] = upsideDown ? k : -k;
- ctm[2] = k;
+ ctm[1] = upsideDown ? ky : -ky;
+ ctm[2] = kx;
ctm[3] = 0;
- ctm[4] = -k * py1;
- ctm[5] = k * (upsideDown ? -px1 : px2);
- pageWidth = k * (py2 - py1);
- pageHeight = k * (px2 - px1);
+ ctm[4] = -kx * py1;
+ ctm[5] = ky * (upsideDown ? -px1 : px2);
+ pageWidth = kx * (py2 - py1);
+ pageHeight = ky * (px2 - px1);
} else if (rotate == 180) {
- ctm[0] = -k;
+ ctm[0] = -kx;
ctm[1] = 0;
ctm[2] = 0;
- ctm[3] = upsideDown ? k : -k;
- ctm[4] = k * px2;
- ctm[5] = k * (upsideDown ? -py1 : py2);
- pageWidth = k * (px2 - px1);
- pageHeight = k * (py2 - py1);
+ 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 ? -k : k;
- ctm[2] = -k;
+ ctm[1] = upsideDown ? -ky : ky;
+ ctm[2] = -kx;
ctm[3] = 0;
- ctm[4] = k * py2;
- ctm[5] = k * (upsideDown ? px2 : -px1);
- pageWidth = k * (py2 - py1);
- pageHeight = k * (px2 - px1);
+ ctm[4] = kx * py2;
+ ctm[5] = ky * (upsideDown ? px2 : -px1);
+ pageWidth = kx * (py2 - py1);
+ pageHeight = ky * (px2 - px1);
} else {
- ctm[0] = k;
+ ctm[0] = kx;
ctm[1] = 0;
ctm[2] = 0;
- ctm[3] = upsideDown ? -k : k;
- ctm[4] = -k * px1;
- ctm[5] = k * (upsideDown ? py2 : -py1);
- pageWidth = k * (px2 - px1);
- pageHeight = k * (py2 - py1);
+ 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();
lineDash = NULL;
lineDashLength = 0;
lineDashStart = 0;
- flatness = 0;
+ flatness = 1;
lineJoin = 0;
lineCap = 0;
miterLimit = 10;
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];
git.asbjorn.biz / swftools.git / blobdiff