SkPDFGraphicState.cpp File Reference

#include "src/pdf/SkPDFGraphicState.h"
#include "include/core/SkData.h"
#include "include/core/SkPaint.h"
#include "include/docs/SkPDFDocument.h"
#include "include/private/base/SkTo.h"
#include "src/pdf/SkPDFDocumentPriv.h"
#include "src/pdf/SkPDFFormXObject.h"
#include "src/pdf/SkPDFUtils.h"

Go to the source code of this file.

Functions
static const char *	as_pdf_blend_mode_name (SkBlendMode mode)
static int	to_stroke_cap (uint8_t cap)
static int	to_stroke_join (uint8_t join)
static uint8_t	pdf_blend_mode (SkBlendMode mode)
static SkPDFIndirectReference	make_invert_function (SkPDFDocument *doc)

Function Documentation

as_pdf_blend_mode_name()

static const char * as_pdf_blend_mode_name ( SkBlendMode  mode )

static

Definition at line 18 of file SkPDFGraphicState.cpp.

                                                            {
    const char* name = SkPDFUtils::BlendModeName(mode);
    SkASSERT(name);
    return name;
}

make_invert_function()

static SkPDFIndirectReference make_invert_function ( SkPDFDocument *  doc )

static

Definition at line 105 of file SkPDFGraphicState.cpp.

                                                                       {
    // Acrobat crashes if we use a type 0 function, kpdf crashes if we use
    // a type 2 function, so we use a type 4 function.
    static const char psInvert[] = "{1 exch sub}";
    // Do not copy the trailing '\0' into the SkData.
    auto invertFunction = SkData::MakeWithoutCopy(psInvert, strlen(psInvert));
 
    std::unique_ptr<SkPDFDict> dict = SkPDFMakeDict();
    dict->insertInt("FunctionType", 4);
    dict->insertObject("Domain", SkPDFMakeArray(0, 1));
    dict->insertObject("Range", SkPDFMakeArray(0, 1));
    return SkPDFStreamOut(std::move(dict), SkMemoryStream::Make(std::move(invertFunction)), doc);
}

pdf_blend_mode()

static uint8_t pdf_blend_mode ( SkBlendMode  mode )

static

Definition at line 46 of file SkPDFGraphicState.cpp.

                                                {
    if (!SkPDFUtils::BlendModeName(mode)
        || SkBlendMode::kXor  == mode
        || SkBlendMode::kPlus == mode)
    {
        mode = SkBlendMode::kSrcOver;
    }
    return SkToU8((unsigned)mode);
}

to_stroke_cap()

static int to_stroke_cap ( uint8_t  cap )

static

Definition at line 24 of file SkPDFGraphicState.cpp.

                                      {
    // PDF32000.book section 8.4.3.3 "Line Cap Style"
    switch ((SkPaint::Cap)cap) {
        case SkPaint::kButt_Cap:   return 0;
        case SkPaint::kRound_Cap:  return 1;
        case SkPaint::kSquare_Cap: return 2;
        default: SkASSERT(false);  return 0;
    }
}

to_stroke_join()

static int to_stroke_join ( uint8_t  join )

static

Definition at line 34 of file SkPDFGraphicState.cpp.

                                        {
    // PDF32000.book section 8.4.3.4 "Line Join Style"
    switch ((SkPaint::Join)join) {
        case SkPaint::kMiter_Join: return 0;
        case SkPaint::kRound_Join: return 1;
        case SkPaint::kBevel_Join: return 2;
        default: SkASSERT(false);  return 0;
    }
}