import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

widget/nsIDeviceContextSpec.h

@@ -0,0 +1,85 @@
+/* -*- 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 "nsISupports.h"
+
+class nsIWidget;
+class nsIPrintSettings;
+
+namespace mozilla {
+namespace gfx{
+class DrawEventRecorder;
+class PrintTarget;
+}
+}
+
+#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;
+
+   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(nsIWidget *aWidget,
+                   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;
+   }
+
+   /**
+    * Override to return something other than the default.
+    *
+    * @return DPI for printing.
+    */
+   virtual float GetDPI() { return 72.0f; }
+
+   /**
+    * Override to return something other than the default.
+    *
+    * @return the printing scale to be applied to the context for printing.
+    */
+   virtual float GetPrintingScale() { return 1.0f;  }
+
+   NS_IMETHOD BeginDocument(const nsAString& aTitle,
+                            const nsAString& aPrintToFileName,
+                            int32_t          aStartPage,
+                            int32_t          aEndPage) = 0;
+
+   NS_IMETHOD EndDocument() = 0;
+   NS_IMETHOD AbortDocument() { return EndDocument(); }
+   NS_IMETHOD BeginPage() = 0;
+   NS_IMETHOD EndPage() = 0;
+};
+
+NS_DEFINE_STATIC_IID_ACCESSOR(nsIDeviceContextSpec,
+                              NS_IDEVICE_CONTEXT_SPEC_IID)
+#endif