Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 97 insertions, 0 deletions

diff --git a/include/svx/IAccessibleViewForwarder.hxx b/include/svx/IAccessibleViewForwarder.hxx
new file mode 100644
index 000000000..fd9a5f638
--- /dev/null
+++ b/include/svx/IAccessibleViewForwarder.hxx
@@ -0,0 +1,97 @@
+/* -*- 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 .
+ */
+
+#ifndef INCLUDED_SVX_IACCESSIBLEVIEWFORWARDER_HXX
+#define INCLUDED_SVX_IACCESSIBLEVIEWFORWARDER_HXX
+
+#include <tools/gen.hxx>
+
+namespace accessibility
+{
+/** <p>This interface provides the means to transform between internal
+    coordinates in 100th of mm and screen coordinates without giving direct
+    access to the underlying view.  Each view forwarder represents a
+    specific real or virtual window.  A call to
+    <method>GetVisibleArea</method> returns the visible rectangle that
+    corresponds to this window.</p>
+
+    <p>This interface is similar to the SvxViewForwarder but
+    differs in two important points: Firstly the <member>GetVisArea</member>
+    method returns a rectangle in internal coordinates and secondly the
+    transformation methods do not require explicit mapmodes.  These have to
+    be provided implicitly by the classes that implement this
+    interface.  A third, less important, difference are the additional
+    transformation methods for sizes.  The reasons for their existence are
+    convenience and improved performance.</p>
+
+    @attention
+        Note, that modifications of the underlying view that lead to
+        different transformations between internal and screen coordinates or
+        change the validity of the forwarder have to be signaled separately.
+*/
+class IAccessibleViewForwarder
+{
+public:
+    IAccessibleViewForwarder() = default;
+    IAccessibleViewForwarder(IAccessibleViewForwarder const&) = default;
+    IAccessibleViewForwarder(IAccessibleViewForwarder&&) = default;
+    IAccessibleViewForwarder& operator=(IAccessibleViewForwarder const&) = default;
+    IAccessibleViewForwarder& operator=(IAccessibleViewForwarder&&) = default;
+
+    virtual ~IAccessibleViewForwarder(){};
+
+    /** Returns the area of the underlying document that is visible in the
+    * corresponding window.
+
+        @return
+            The rectangle of the visible part of the document. The values
+            are, contrary to the base class, in internal coordinates of
+            100th of mm.
+     */
+    virtual tools::Rectangle GetVisibleArea() const = 0;
+
+    /** Transform the specified point from internal coordinates in 100th of
+        mm to an absolute screen position.
+
+        @param rPoint
+            Point in internal coordinates (100th of mm).
+
+        @return
+            The same point but in screen coordinates relative to the upper
+            left corner of the (current) screen.
+     */
+    virtual Point LogicToPixel(const Point& rPoint) const = 0;
+
+    /** Transform the specified size from internal coordinates in 100th of
+        mm to a screen oriented pixel size.
+
+        @param rSize
+            Size in internal coordinates (100th of mm).
+
+        @return
+            The same size but in screen coordinates.
+     */
+    virtual Size LogicToPixel(const Size& rSize) const = 0;
+};
+
+} // end of namespace accessibility
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */