1 files changed, 111 insertions, 0 deletions
diff --git a/widget/nsIDeviceContextSpec.h b/widget/nsIDeviceContextSpec.h
new file mode 100644
index 0000000000..6afe4ea850
--- /dev/null
+++ b/widget/nsIDeviceContextSpec.h
@@ -0,0 +1,111 @@
+/* -*- 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, const char* 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