Quelle nsIDeviceContextSpec.h Sprache: C

/* -*- Mode: C++; tab-width: 2; 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 nsIDeviceContextSpec_h___
#define nsIDeviceContextSpec_h___

#include "gfxPoint.h"
#include "nsISupports.h"
#include "mozilla/StaticPrefs_print.h"
#include "mozilla/gfx/Point.h"
#include "mozilla/gfx/PrintPromise.h"
#include "mozilla/MoveOnlyFunction.h"

class nsIWidget;
class nsIPrintSettings;

namespace mozilla {
namespace gfx {
class DrawEventRecorder;
class PrintTarget;
}  // namespace gfx
}  // namespace mozilla

#define NS_IDEVICE_CONTEXT_SPEC_IID                  \
  {                                                  \
    0xf407cfba, 0xbe28, 0x46c9, {                    \
      0x8a, 0xba, 0x04, 0x2d, 0xae, 0xbb, 0x4f, 0x23 \
    }                                                \
  }

class nsIDeviceContextSpec : public nsISupports {
public:
  typedef mozilla::gfx::PrintTarget PrintTarget;
  using IntSize = mozilla::gfx::IntSize;

  NS_DECLARE_STATIC_IID_ACCESSOR(NS_IDEVICE_CONTEXT_SPEC_IID)

  /**
   * Initialize the device context spec.
   * @param aWidget         A widget a dialog can be hosted in
   * @param aPrintSettings  Print settings for the print operation
   * @param aIsPrintPreview True if creating Spec for PrintPreview
   * @return NS_OK or a suitable error code.
   */
  NS_IMETHOD Init(nsIPrintSettings* aPrintSettings, bool aIsPrintPreview) = 0;

  virtual already_AddRefed<PrintTarget> MakePrintTarget() = 0;

  /**
   * If required override to return a recorder to record the print.
   *
   * @param aDrawEventRecorder out param for the recorder to use
   * @return NS_OK or a suitable error code
   */
  NS_IMETHOD GetDrawEventRecorder(
      mozilla::gfx::DrawEventRecorder** aDrawEventRecorder) {
    MOZ_ASSERT(aDrawEventRecorder);
    *aDrawEventRecorder = nullptr;
    return NS_OK;
  }

  /**
   * @return DPI for printing.
   */
  float GetDPI() { return mozilla::StaticPrefs::print_default_dpi(); }

  /**
   * @return the printing scale to be applied to the context for printing.
   */
  float GetPrintingScale();

  /**
   * @return the point to translate the context to for printing.
   */
  gfxPoint GetPrintingTranslate();

  NS_IMETHOD BeginDocument(const nsAString& aTitle,
                           const nsAString& aPrintToFileName,
                           int32_t aStartPage, int32_t aEndPage) = 0;

  virtual RefPtr<mozilla::gfx::PrintEndDocumentPromise> EndDocument() = 0;
  /**
   * Note: not all print devices implement mixed page sizing. Internally,
   * aSizeInPoints gets handed off to a PrintTarget, and most PrintTarget
   * subclasses will ignore `aSizeInPoints`.
   */
  NS_IMETHOD BeginPage(const IntSize& aSizeInPoints) = 0;
  NS_IMETHOD EndPage() = 0;

protected:
  using AsyncEndDocumentFunction = mozilla::MoveOnlyFunction<nsresult()>;
  static RefPtr<mozilla::gfx::PrintEndDocumentPromise> EndDocumentAsync(
      const char* aCallSite, AsyncEndDocumentFunction aFunction);

  static RefPtr<mozilla::gfx::PrintEndDocumentPromise>
  EndDocumentPromiseFromResult(nsresult aResult, mozilla::StaticString aSite);

  nsCOMPtr<nsIPrintSettings> mPrintSettings;

#ifdef MOZ_ENABLE_SKIA_PDF
  // This variable is independant of nsIPrintSettings::kOutputFormatPDF (i.e.
  // save-to-PDF). If set to true, then even when we print to a printer we
  // output and send it PDF.
  bool mPrintViaSkPDF = false;
#endif
};

NS_DEFINE_STATIC_IID_ACCESSOR(nsIDeviceContextSpec, NS_IDEVICE_CONTEXT_SPEC_IID)
#endif

quality100%

¤ Dauer der Verarbeitung: 0.1 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.

Bemerkung:

Die farbliche Syntaxdarstellung ist noch experimentell.