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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:06:44 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:06:44 +0000
commited5640d8b587fbcfed7dd7967f3de04b37a76f26 (patch)
tree7a5f7c6c9d02226d7471cb3cc8fbbf631b415303 /include/svx/IAccessibleViewForwarder.hxx
parentInitial commit. (diff)
downloadlibreoffice-ed5640d8b587fbcfed7dd7967f3de04b37a76f26.tar.xz
libreoffice-ed5640d8b587fbcfed7dd7967f3de04b37a76f26.zip
Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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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 .
+ */
+
+#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: */