diff options
Diffstat (limited to 'kpdf/xpdf/xpdf/PreScanOutputDev.cc')
| -rw-r--r-- | kpdf/xpdf/xpdf/PreScanOutputDev.cc | 257 |
1 files changed, 257 insertions, 0 deletions
diff --git a/kpdf/xpdf/xpdf/PreScanOutputDev.cc b/kpdf/xpdf/xpdf/PreScanOutputDev.cc new file mode 100644 index 00000000..52ffeb7f --- /dev/null +++ b/kpdf/xpdf/xpdf/PreScanOutputDev.cc @@ -0,0 +1,257 @@ +//======================================================================== +// +// PreScanOutputDev.cc +// +// Copyright 2005 Glyph & Cog, LLC +// +//======================================================================== + +#include <aconf.h> + +#ifdef USE_GCC_PRAGMAS +#pragma implementation +#endif + +#include <math.h> +#include "GlobalParams.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->getStrokeColorSpace(), state->getStrokeColor(), + state->getStrokeOpacity(), state->getBlendMode()); + state->getLineDash(&dash, &dashLen, &dashStart); + if (dashLen != 0) { + gdi = gFalse; + } +} + +void PreScanOutputDev::fill(GfxState *state) { + check(state->getFillColorSpace(), state->getFillColor(), + state->getFillOpacity(), state->getBlendMode()); +} + +void PreScanOutputDev::eoFill(GfxState *state) { + check(state->getFillColorSpace(), state->getFillColor(), + state->getFillOpacity(), state->getBlendMode()); +} + +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; + Ref embRef; + DisplayFontParam *dfp; + GBool simpleTTF; + + render = state->getRender(); + if (!(render & 1)) { + check(state->getFillColorSpace(), state->getFillColor(), + state->getFillOpacity(), state->getBlendMode()); + } + if ((render & 3) == 1 || (render & 3) == 2) { + check(state->getStrokeColorSpace(), state->getStrokeColor(), + state->getStrokeOpacity(), state->getBlendMode()); + } + + font = state->getFont(); + state->getFontTransMat(&m11, &m12, &m21, &m22); + 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) && + (font->getEmbeddedFontID(&embRef) || + font->getExtFontFile() || + (font->getName() && + (dfp = globalParams->getDisplayFont(font->getName())) && + dfp->kind == displayFontTT)); + 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) { + int i, j; + + check(state->getFillColorSpace(), state->getFillColor(), + state->getFillOpacity(), state->getBlendMode()); + gdi = gFalse; + + if (inlineImg) { + str->reset(); + j = height * ((width + 7) / 8); + for (i = 0; i < j; ++i) + str->getChar(); + str->close(); + } +} + +void PreScanOutputDev::drawImage(GfxState *state, Object * /*ref*/, Stream *str, + int width, int height, + GfxImageColorMap *colorMap, + int * /*maskColors*/, GBool inlineImg) { + GfxColorSpace *colorSpace; + int i, j; + + colorSpace = colorMap->getColorSpace(); + if (colorSpace->getMode() == csIndexed) { + colorSpace = ((GfxIndexedColorSpace *)colorSpace)->getBase(); + } + if (colorSpace->getMode() != csDeviceGray && + colorSpace->getMode() != csCalGray) { + gray = gFalse; + } + mono = gFalse; + if (state->getBlendMode() != gfxBlendNormal) { + transparency = gTrue; + } + gdi = gFalse; + + if (inlineImg) { + str->reset(); + j = height * ((width * colorMap->getNumPixelComps() * + colorMap->getBits() + 7) / 8); + for (i = 0; i < j; ++i) + str->getChar(); + str->close(); + } +} + +void PreScanOutputDev::drawMaskedImage(GfxState *state, Object * /*ref*/, + Stream * /*str*/, + int /*width*/, int /*height*/, + GfxImageColorMap *colorMap, + Stream * /*maskStr*/, + int /*maskWidth*/, int /*maskHeight*/, + GBool /*maskInvert*/) { + GfxColorSpace *colorSpace; + + colorSpace = colorMap->getColorSpace(); + if (colorSpace->getMode() == csIndexed) { + colorSpace = ((GfxIndexedColorSpace *)colorSpace)->getBase(); + } + if (colorSpace->getMode() != csDeviceGray && + colorSpace->getMode() != csCalGray) { + gray = gFalse; + } + mono = gFalse; + if (state->getBlendMode() != gfxBlendNormal) { + transparency = gTrue; + } + gdi = gFalse; +} + +void PreScanOutputDev::drawSoftMaskedImage(GfxState * /*state*/, Object * /*ref*/, + Stream * /*str*/, + int /*width*/, int /*height*/, + GfxImageColorMap *colorMap, + Stream * /*maskStr*/, + int /*maskWidth*/, int /*maskHeight*/, + GfxImageColorMap * /*maskColorMap*/) { + 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; +} + +void PreScanOutputDev::beginTransparencyGroup( + GfxState * /*state*/, double * /*bbox*/, + GfxColorSpace * /*blendingColorSpace*/, + GBool /*isolated*/, GBool /*knockout*/, + GBool /*forSoftMask*/) { + transparency = gTrue; + gdi = gFalse; +} + +void PreScanOutputDev::check(GfxColorSpace *colorSpace, GfxColor *color, + double opacity, GfxBlendMode blendMode) { + GfxRGB rgb; + + if (colorSpace->getMode() == csPattern) { + mono = gFalse; + gray = gFalse; + gdi = gFalse; + } else { + colorSpace->getRGB(color, &rgb); + 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; + gdi = gTrue; +} |