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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * 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/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed
+ * with this work for additional information regarding copyright
+ * ownership. The ASF licenses this file to you under the Apache
+ * License, Version 2.0 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <cppcanvas/canvas.hxx>
+#include <action.hxx>
+
+#include <memory>
+
+namespace basegfx {
+ class B2DPoint;
+ class B2DVector;
+}
+
+class GDIMetaFile;
+class Gradient;
+
+
+/* Definition of internal::TransparencyGroupActionFactory */
+
+namespace cppcanvas::internal
+ {
+ struct OutDevState;
+
+ typedef std::unique_ptr< GDIMetaFile > MtfAutoPtr;
+ typedef std::unique_ptr< Gradient > GradientAutoPtr;
+
+ /** Transparency group action.
+
+ This action groups a bunch of other actions, to be
+ rendered with the given transparency setting against the
+ background.
+
+ Creates encapsulated converters between GDIMetaFile and
+ XCanvas. The Canvas argument is deliberately placed at the
+ constructor, to force reconstruction of this object for a
+ new canvas. This considerably eases internal state
+ handling, since a lot of the internal state (e.g. fonts,
+ text layout) is Canvas-dependent.
+ */
+ namespace TransparencyGroupActionFactory
+ {
+ /** Create new transparency group action.
+
+ @param rGroupMtf
+ Metafile that groups all actions to be rendered
+ transparent.
+
+ @param rAlphaGradient
+ VCL gradient, to be rendered into the action's alpha
+ channel.
+
+ @param rDstPoint
+ Left, top edge of destination, in current state
+ coordinate system
+
+ @param rDstSize
+ Size of the transparency group object, in current
+ state coordinate system.
+ */
+ std::shared_ptr<Action> createTransparencyGroupAction( MtfAutoPtr&& rGroupMtf,
+ GradientAutoPtr&& rAlphaGradient,
+ const ::basegfx::B2DPoint& rDstPoint,
+ const ::basegfx::B2DVector& rDstSize,
+ const CanvasSharedPtr& rCanvas,
+ const OutDevState& rState );
+ }
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */