//======================================================================== // // PreScanOutputDev.cc // // Copyright 2005 Glyph & Cog, LLC // //======================================================================== #include #ifdef USE_GCC_PRAGMAS #pragma implementation #endif #include #include "gmempp.h" #include "GlobalParams.h" #include "Page.h" #include "Gfx.h" #include "GfxFont.h" #include "Link.h" #include "PreScanOutputDev.h" //------------------------------------------------------------------------ // PreScanOutputDev //------------------------------------------------------------------------ PreScanOutputDev::PreScanOutputDev() { clearStats(); } PreScanOutputDev::~PreScanOutputDev() { } void PreScanOutputDev::startPage(int pageNum, GfxState *state) { } void PreScanOutputDev::endPage() { } void PreScanOutputDev::stroke(GfxState *state) { double *dash; int dashLen; double dashStart; check(state, state->getStrokeColorSpace(), state->getStrokeColor(), state->getStrokeOpacity(), state->getBlendMode()); state->getLineDash(&dash, &dashLen, &dashStart); if (dashLen != 0) { gdi = gFalse; } } void PreScanOutputDev::fill(GfxState *state) { check(state, state->getFillColorSpace(), state->getFillColor(), state->getFillOpacity(), state->getBlendMode()); } void PreScanOutputDev::eoFill(GfxState *state) { check(state, state->getFillColorSpace(), state->getFillColor(), state->getFillOpacity(), state->getBlendMode()); } void PreScanOutputDev::tilingPatternFill(GfxState *state, Gfx *gfx, Object *strRef, int paintType, int tilingType, Dict *resDict, double *mat, double *bbox, int x0, int y0, int x1, int y1, double xStep, double yStep) { if (paintType == 1) { gfx->drawForm(strRef, resDict, mat, bbox); } else { check(state, state->getFillColorSpace(), state->getFillColor(), state->getFillOpacity(), state->getBlendMode()); } } GBool PreScanOutputDev::shadedFill(GfxState *state, GfxShading *shading) { if (shading->getColorSpace()->getMode() != csDeviceGray && shading->getColorSpace()->getMode() != csCalGray) { gray = gFalse; } mono = gFalse; if (state->getFillOpacity() != 1 || state->getBlendMode() != gfxBlendNormal) { transparency = gTrue; } return gTrue; } void PreScanOutputDev::clip(GfxState *state) { //~ check for a rectangle "near" the edge of the page; //~ else set gdi to false } void PreScanOutputDev::eoClip(GfxState *state) { //~ see clip() } void PreScanOutputDev::beginStringOp(GfxState *state) { int render; GfxFont *font; double m11, m12, m21, m22; GBool simpleTTF; render = state->getRender(); if (!(render & 1)) { check(state, state->getFillColorSpace(), state->getFillColor(), state->getFillOpacity(), state->getBlendMode()); } if ((render & 3) == 1 || (render & 3) == 2) { check(state, state->getStrokeColorSpace(), state->getStrokeColor(), state->getStrokeOpacity(), state->getBlendMode()); } font = state->getFont(); state->getFontTransMat(&m11, &m12, &m21, &m22); //~ this should check for external fonts that are non-TrueType simpleTTF = fabs(m11 + m22) < 0.01 && m11 > 0 && fabs(m12) < 0.01 && fabs(m21) < 0.01 && fabs(state->getHorizScaling() - 1) < 0.001 && (font->getType() == fontTrueType || font->getType() == fontTrueTypeOT); if (simpleTTF) { //~ need to create a FoFiTrueType object, and check for a Unicode cmap } if (state->getRender() != 0 || !simpleTTF) { gdi = gFalse; } } void PreScanOutputDev::endStringOp(GfxState *state) { } GBool PreScanOutputDev::beginType3Char(GfxState *state, double x, double y, double dx, double dy, CharCode code, Unicode *u, int uLen) { // return false so all Type 3 chars get rendered (no caching) return gFalse; } void PreScanOutputDev::endType3Char(GfxState *state) { } void PreScanOutputDev::drawImageMask(GfxState *state, Object *ref, Stream *str, int width, int height, GBool invert, GBool inlineImg, GBool interpolate) { check(state, state->getFillColorSpace(), state->getFillColor(), state->getFillOpacity(), state->getBlendMode()); if (state->getFillColorSpace()->getMode() == csPattern) { patternImgMask = gTrue; } gdi = gFalse; if (inlineImg) { str->reset(); str->discardChars(height * ((width + 7) / 8)); str->close(); } } void PreScanOutputDev::drawImage(GfxState *state, Object *ref, Stream *str, int width, int height, GfxImageColorMap *colorMap, int *maskColors, GBool inlineImg, GBool interpolate) { GfxColorSpace *colorSpace; colorSpace = colorMap->getColorSpace(); if (colorSpace->getMode() == csIndexed) { colorSpace = ((GfxIndexedColorSpace *)colorSpace)->getBase(); } if (colorSpace->getMode() == csDeviceGray || colorSpace->getMode() == csCalGray) { if (colorMap->getBits() > 1) { mono = gFalse; } } else { gray = gFalse; mono = gFalse; } if (state->getFillOpacity() != 1 || state->getBlendMode() != gfxBlendNormal) { transparency = gTrue; } gdi = gFalse; if (inlineImg) { str->reset(); str->discardChars(height * ((width * colorMap->getNumPixelComps() * colorMap->getBits() + 7) / 8)); str->close(); } } void PreScanOutputDev::drawMaskedImage(GfxState *state, Object *ref, Stream *str, int width, int height, GfxImageColorMap *colorMap, Object *maskRef, Stream *maskStr, int maskWidth, int maskHeight, GBool maskInvert, GBool interpolate) { GfxColorSpace *colorSpace; colorSpace = colorMap->getColorSpace(); if (colorSpace->getMode() == csIndexed) { colorSpace = ((GfxIndexedColorSpace *)colorSpace)->getBase(); } if (colorSpace->getMode() == csDeviceGray || colorSpace->getMode() == csCalGray) { if (colorMap->getBits() > 1) { mono = gFalse; } } else { gray = gFalse; mono = gFalse; } if (state->getFillOpacity() != 1 || state->getBlendMode() != gfxBlendNormal) { transparency = gTrue; } gdi = gFalse; } void PreScanOutputDev::drawSoftMaskedImage(GfxState *state, Object *ref, Stream *str, int width, int height, GfxImageColorMap *colorMap, Object *maskRef, Stream *maskStr, int maskWidth, int maskHeight, GfxImageColorMap *maskColorMap, double *matte, GBool interpolate) { GfxColorSpace *colorSpace; colorSpace = colorMap->getColorSpace(); if (colorSpace->getMode() == csIndexed) { colorSpace = ((GfxIndexedColorSpace *)colorSpace)->getBase(); } if (colorSpace->getMode() != csDeviceGray && colorSpace->getMode() != csCalGray) { gray = gFalse; } mono = gFalse; transparency = gTrue; gdi = gFalse; } GBool PreScanOutputDev::beginTransparencyGroup( GfxState *state, double *bbox, GfxColorSpace *blendingColorSpace, GBool isolated, GBool knockout, GBool forSoftMask) { transparency = gTrue; gdi = gFalse; return gTrue; } void PreScanOutputDev::check(GfxState *state, GfxColorSpace *colorSpace, GfxColor *color, double opacity, GfxBlendMode blendMode) { GfxGray gr; GfxCMYK cmyk; GfxRGB rgb; if (colorSpace->getMode() == csPattern) { mono = gFalse; gray = gFalse; gdi = gFalse; } else if (colorSpace->getMode() == csDeviceGray || colorSpace->getMode() == csCalGray) { colorSpace->getGray(color, &gr, state->getRenderingIntent()); if (!(gr == 0 || gr == gfxColorComp1)) { mono = gFalse; } } else if (colorSpace->getMode() == csDeviceCMYK) { colorSpace->getCMYK(color, &cmyk, state->getRenderingIntent()); if (cmyk.c != 0 || cmyk.m != 0 || cmyk.y != 0) { mono = gFalse; gray = gFalse; } else if (!(cmyk.k == 0 || cmyk.k == gfxColorComp1)) { mono = gFalse; } } else { colorSpace->getRGB(color, &rgb, state->getRenderingIntent()); if (rgb.r != rgb.g || rgb.g != rgb.b || rgb.b != rgb.r) { mono = gFalse; gray = gFalse; } else if (!((rgb.r == 0 && rgb.g == 0 && rgb.b == 0) || (rgb.r == gfxColorComp1 && rgb.g == gfxColorComp1 && rgb.b == gfxColorComp1))) { mono = gFalse; } } if (opacity != 1 || blendMode != gfxBlendNormal) { transparency = gTrue; } } void PreScanOutputDev::clearStats() { mono = gTrue; gray = gTrue; transparency = gFalse; patternImgMask = gFalse; gdi = gTrue; }