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, 72 insertions, 0 deletions

diff --git a/sd/source/ui/presenter/CanvasUpdateRequester.hxx b/sd/source/ui/presenter/CanvasUpdateRequester.hxx
new file mode 100644
index 000000000..ebb582ead
--- /dev/null
+++ b/sd/source/ui/presenter/CanvasUpdateRequester.hxx
@@ -0,0 +1,72 @@
+/* -*- 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 <com/sun/star/uno/Reference.hxx>
+#include <tools/link.hxx>
+#include <memory>
+
+namespace com::sun::star::rendering
+{
+class XSpriteCanvas;
+}
+
+struct ImplSVEvent;
+
+namespace sd::presenter
+{
+/** Each UpdateRequester handles update requests (calls to
+    XCanvas::updateScreen()) for one shared canvas (a canvas that has one or
+    more PresenterCanvas wrappers).  Multiple calls are collected and lead
+    to a single call to updateScreen.
+*/
+class CanvasUpdateRequester : public std::enable_shared_from_this<CanvasUpdateRequester>
+{
+public:
+    CanvasUpdateRequester(const CanvasUpdateRequester&) = delete;
+    CanvasUpdateRequester& operator=(const CanvasUpdateRequester&) = delete;
+
+    /** @return the Canvas UpdateRequester object for the given shared canvas.
+                A new object is created when it does not already exist.
+    */
+    static std::shared_ptr<CanvasUpdateRequester>
+    Instance(const css::uno::Reference<css::rendering::XSpriteCanvas>& rxCanvas);
+
+    void RequestUpdate(const bool bUpdateAll);
+
+private:
+    explicit CanvasUpdateRequester(
+        const css::uno::Reference<css::rendering::XSpriteCanvas>& rxCanvas);
+    ~CanvasUpdateRequester();
+    class Deleter;
+    friend class Deleter;
+
+    /// keep instance alive waiting for event dispatch
+    std::shared_ptr<CanvasUpdateRequester> m_pThis;
+    css::uno::Reference<css::rendering::XSpriteCanvas> mxCanvas;
+    ImplSVEvent* m_pUserEventId;
+    bool mbUpdateFlag;
+
+    DECL_LINK(Callback, void*, void);
+};
+
+} // end of namespace ::sd::presenter
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */