Ziele Untersuchung
mit Columbo Integrität von
Datenbanken Interaktion und
Portierbarkeit Ergonomie der
Schnittstellen

Angebot Produkte Projekt Beratung

Mittel Analytik Modellierung Sprachen Algebra Logik Hardware Denken Kreativität

Zusammenhänge Gesellschaft Wirtschaft Branche Firma


products/sources/formale Sprachen/C/Firefox/widget/ (Browser von der Mozilla Stiftung Version 136.0.1^©) Datei vom 10.2.2025 mit Größe 4 kB

Quelle nsPaper.h Sprache: C

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef nsPaper_h__
#define nsPaper_h__

#include "mozilla/dom/ToJSValue.h"
#include "mozilla/gfx/Point.h"
#include "mozilla/gfx/Rect.h"
#include "mozilla/Maybe.h"
#include "nsIPaper.h"
#include "nsISupportsImpl.h"
#include "js/TypeDecls.h"
#include "nsString.h"

struct JSContext;

namespace mozilla {

// Simple struct that can be used off the main thread to hold all the info from
// an nsPaper instance.
struct PaperInfo {
  using MarginDouble = mozilla::gfx::MarginDouble;
  using SizeDouble = mozilla::gfx::SizeDouble;

  PaperInfo() = default;
  PaperInfo(const nsAString& aId, const nsAString& aName,
            const SizeDouble& aSize,
            const Maybe<MarginDouble>& aUnwriteableMargin)
      : mId(aId),
        mName(aName),
        mSize(aSize),
        mUnwriteableMargin(aUnwriteableMargin) {}

  nsString mId;
  nsString mName;

  SizeDouble mSize;

  // The margins may not be known by some back-ends.
  Maybe<MarginDouble> mUnwriteableMargin{Nothing()};
};

/**
* Plain struct used for commonly used, hard-coded paper sizes.
*
* Used to construct PaperInfo at runtime by localizing the name.
*/
struct CommonPaperSize final {
  // The standardized PWG name, which should be used as the PaperInfo id
  nsLiteralString mPWGName;
  // The name key to localize the name of this paper size using strings in
  // printUI.ftl
  nsLiteralCString mLocalizableNameKey;
  // Size is in points, same as PaperInfo
  gfx::SizeDouble mSize;
};

}  // namespace mozilla

class nsPrinterBase;

class nsPaper final : public nsIPaper {
  using Promise = mozilla::dom::Promise;
  using CommonPaperSize = mozilla::CommonPaperSize;

public:
  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
  NS_DECL_CYCLE_COLLECTION_CLASS(nsPaper)
  NS_DECL_NSIPAPER

  nsPaper() = delete;
  explicit nsPaper(const mozilla::PaperInfo&);
  nsPaper(nsPrinterBase&, const mozilla::PaperInfo&);

  // This list is used for both our fallback paper sizes (used when a printer
  // does not provide a list of available paper sizes), and for localizing
  // common paper sizes to avoid querying the printer for extra information in
  // the common case, as well as to provide more uniform paper names in the
  // frontend.
  // If we need to separate these two uses, we will need to either split this
  // into two lists, or add a flag to indicate what the size is used for.
#define mm *72.0 / 25.4
#define in *72.0
  static constexpr CommonPaperSize kCommonPaperSizes[] = {
      CommonPaperSize{u"iso_a5"_ns, "a5"_ns, {148 mm, 210 mm}},
      CommonPaperSize{u"iso_a4"_ns, "a4"_ns, {210 mm, 297 mm}},
      CommonPaperSize{u"iso_a3"_ns, "a3"_ns, {297 mm, 420 mm}},
      CommonPaperSize{u"iso_b5"_ns, "b5"_ns, {176 mm, 250 mm}},
      CommonPaperSize{u"iso_b4"_ns, "b4"_ns, {250 mm, 353 mm}},
      CommonPaperSize{u"jis_b5"_ns, "jis-b5"_ns, {182 mm, 257 mm}},
      CommonPaperSize{u"jis_b4"_ns, "jis-b4"_ns, {257 mm, 364 mm}},
      CommonPaperSize{u"na_letter"_ns, "letter"_ns, {8.5 in, 11 in}},
      CommonPaperSize{u"na_legal"_ns, "legal"_ns, {8.5 in, 14 in}},
      CommonPaperSize{u"na_ledger"_ns, "tabloid"_ns, {11 in, 17 in}}};
#undef mm
#undef in
  static constexpr size_t kNumCommonPaperSizes = std::size(kCommonPaperSizes);

private:
  ~nsPaper();

  // null if not associated with a printer (for "Save-to-PDF" paper sizes)
  RefPtr<nsPrinterBase> mPrinter;

  RefPtr<Promise> mMarginPromise;
  const mozilla::PaperInfo mInfo;
};

namespace mozilla {

// Used to allow fixed-sized arrays of PWG paper info to be ref-counted.
class CommonPaperInfoArray
    : public Array<PaperInfo, nsPaper::kNumCommonPaperSizes> {
public:
  NS_INLINE_DECL_THREADSAFE_REFCOUNTING(CommonPaperInfoArray);
  CommonPaperInfoArray() = default;

private:
  ~CommonPaperInfoArray() = default;
};

}  // namespace mozilla

#endif /* nsPaper_h__ */

quality96%

¤ Dauer der Verarbeitung: 0.13 Sekunden (vorverarbeitet) ¤

Wurzel

Suchen

Beweissystem der NASA

Beweissystem Isabelle

NIST Cobol Testsuite

Cephes Mathematical Library

Wiener Entwicklungsmethode

Haftungshinweis

Die Informationen auf dieser Webseite wurden nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit, noch Qualität der bereit gestellten Informationen zugesichert.