gecko-dev/widget/nsDeviceContextSpecProxy.h
Jonathan Watt 07bafd2423 Bug 1833244 p1. Create infrastructure to pass page dimensions to PrintTarget::BeginPage. r=dholbert,geckoview-reviewers,jonalmeida
OS print drivers/devices know nothing about page dimensions unless we tell
them. Previously, the physical page dimensions (including orientation) have
always been the same, so communicating their dimensions once at the start of
a print has been enough. In preparation for supporting different "physical"
page dimensions (in the immediate future only different page orientations) when
we save to PDF, we need to have the infrastructure to pass dimensions through
on a page-by-page basis. This patch adds that.

None of the PrintTarget subclasses do anything with this extra information yet,
but in a follow-up patch PrintTargetPDF will use this information to create
PDFs with mixed page orientations.

Differential Revision: https://phabricator.services.mozilla.com/D179423
2023-07-10 14:26:12 +00:00

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 nsDeviceContextSpecProxy_h
#define nsDeviceContextSpecProxy_h
#include "nsIDeviceContextSpec.h"
#include "nsCOMPtr.h"
#include "nsString.h"
#include "mozilla/layout/printing/DrawEventRecorder.h"
#include "mozilla/gfx/PrintPromise.h"
class nsIFile;
class nsIUUIDGenerator;
namespace mozilla {
namespace layout {
class RemotePrintJobChild;
}
} // namespace mozilla
class nsDeviceContextSpecProxy final : public nsIDeviceContextSpec {
public:
using IntSize = mozilla::gfx::IntSize;
using RemotePrintJobChild = mozilla::layout::RemotePrintJobChild;
explicit nsDeviceContextSpecProxy(RemotePrintJobChild* aRemotePrintJob);
NS_DECL_ISUPPORTS
NS_IMETHOD Init(nsIPrintSettings* aPrintSettings, bool aIsPrintPreview) final;
already_AddRefed<PrintTarget> MakePrintTarget() final;
NS_IMETHOD GetDrawEventRecorder(
mozilla::gfx::DrawEventRecorder** aDrawEventRecorder) final;
NS_IMETHOD BeginDocument(const nsAString& aTitle,
const nsAString& aPrintToFileName,
int32_t aStartPage, int32_t aEndPage) final;
RefPtr<mozilla::gfx::PrintEndDocumentPromise> EndDocument() final;
NS_IMETHOD BeginPage(const IntSize& aSizeInPoints) final;
NS_IMETHOD EndPage() final;
private:
~nsDeviceContextSpecProxy();
RefPtr<RemotePrintJobChild> mRemotePrintJob;
RefPtr<mozilla::layout::DrawEventRecorderPRFileDesc> mRecorder;
IntSize mCurrentPageSizeInPoints;
};
#endif // nsDeviceContextSpecProxy_h