1
    2
    3
    4
    5
    6
    7
    8
    9
   10
   11
   12
   13
   14
   15
   16
   17
   18
   19
   20
   21
   22
   23
   24
   25
   26
   27
   28
   29
   30
   31
   32
   33
   34
   35
   36
   37
   38
   39
   40
   41
   42
   43
   44
   45
   46
   47
   48
   49
   50
   51
   52
   53
   54
   55
   56
   57
   58
   59
   60
   61
   62
   63
   64
   65
   66
   67
   68
   69
   70
   71
   72
   73
   74
   75
   76
   77
   78
   79
   80
   81
   82
   83
   84
   85
   86
   87
   88
   89
   90
   91
   92
   93
   94
   95


printing / printing_features.cc [blame]

// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "printing/printing_features.h"

#include "build/build_config.h"
#include "printing/buildflags/buildflags.h"

#if BUILDFLAG(ENABLE_OOP_PRINTING)
#include "base/metrics/field_trial_params.h"
#endif

namespace printing {
namespace features {

#if BUILDFLAG(IS_CHROMEOS)
// Add printers via printscanmgr instead of debugd.
BASE_FEATURE(kAddPrinterViaPrintscanmgr,
             "AddPrinterViaPrintscanmgr",
             base::FEATURE_ENABLED_BY_DEFAULT);
#endif  // BUILDFLAG(IS_CHROMEOS)

#if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_MAC)
// Use the CUPS IPP printing backend instead of the original CUPS backend that
// calls the deprecated PPD API.
BASE_FEATURE(kCupsIppPrintingBackend,
             "CupsIppPrintingBackend",
#if BUILDFLAG(IS_LINUX)
             base::FEATURE_DISABLED_BY_DEFAULT
#else
             base::FEATURE_ENABLED_BY_DEFAULT
#endif
);
#endif  // BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_MAC)

#if BUILDFLAG(IS_WIN)
// When using PostScript level 3 printing, render text with Type 42 fonts if
// possible.
BASE_FEATURE(kPrintWithPostScriptType42Fonts,
             "PrintWithPostScriptType42Fonts",
             base::FEATURE_DISABLED_BY_DEFAULT);

// When using GDI printing, avoid rasterization if possible.
BASE_FEATURE(kPrintWithReducedRasterization,
             "PrintWithReducedRasterization",
             base::FEATURE_DISABLED_BY_DEFAULT);

// Read printer capabilities with XPS when use XPS for printing.
BASE_FEATURE(kReadPrinterCapabilitiesWithXps,
             "ReadPrinterCapabilitiesWithXps",
             base::FEATURE_DISABLED_BY_DEFAULT);

// Use XPS for printing instead of GDI.
BASE_FEATURE(kUseXpsForPrinting,
             "UseXpsForPrinting",
             base::FEATURE_DISABLED_BY_DEFAULT);

// Use XPS for printing instead of GDI for printing PDF documents. This is
// independent of `kUseXpsForPrinting`; can use XPS for PDFs even if still using
// GDI for modifiable content.
BASE_FEATURE(kUseXpsForPrintingFromPdf,
             "UseXpsForPrintingFromPdf",
             base::FEATURE_DISABLED_BY_DEFAULT);
#endif  // BUILDFLAG(IS_WIN)

#if BUILDFLAG(ENABLE_OOP_PRINTING)
// Enables printing interactions with the operating system to be performed
// out-of-process.
BASE_FEATURE(kEnableOopPrintDrivers,
             "EnableOopPrintDrivers",
#if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_MAC)
             base::FEATURE_ENABLED_BY_DEFAULT
#else
             base::FEATURE_DISABLED_BY_DEFAULT
#endif
);

const base::FeatureParam<bool> kEnableOopPrintDriversEarlyStart{
    &kEnableOopPrintDrivers, "EarlyStart", false};

const base::FeatureParam<bool> kEnableOopPrintDriversJobPrint{
    &kEnableOopPrintDrivers, "JobPrint", true};

const base::FeatureParam<bool> kEnableOopPrintDriversSandbox{
    &kEnableOopPrintDrivers, "Sandbox", false};

#if BUILDFLAG(IS_WIN)
const base::FeatureParam<bool> kEnableOopPrintDriversSingleProcess{
    &kEnableOopPrintDrivers, "SingleProcess", true};
#endif
#endif  // BUILDFLAG(ENABLE_OOP_PRINTING)

}  // namespace features
}  // namespace printing