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, 76 insertions, 0 deletions

diff --git a/svx/inc/sdr/overlay/overlaymanagerbuffered.hxx b/svx/inc/sdr/overlay/overlaymanagerbuffered.hxx
new file mode 100644
index 000000000..a5acd6abc
--- /dev/null
+++ b/svx/inc/sdr/overlay/overlaymanagerbuffered.hxx
@@ -0,0 +1,76 @@
+/* -*- 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_INC_SDR_OVERLAY_OVERLAYMANAGERBUFFERED_HXX
+#define INCLUDED_SVX_INC_SDR_OVERLAY_OVERLAYMANAGERBUFFERED_HXX
+
+#include <svx/sdr/overlay/overlaymanager.hxx>
+#include <basegfx/range/b2irange.hxx>
+#include <vcl/virdev.hxx>
+#include <vcl/idle.hxx>
+
+
+namespace sdr::overlay
+    {
+        class OverlayManagerBuffered final : public OverlayManager
+        {
+            // The VirtualDevice for draw window content buffering, this
+            // is the view content without overlay
+            ScopedVclPtr<VirtualDevice>             mpBufferDevice;
+
+            // #i73602# The VirtualDevice for OverlayPaint buffering. This
+            // is an extra device to avoid flickering of overlay paints
+            ScopedVclPtr<VirtualDevice>             mpOutputBufferDevice;
+
+            // Idle for buffering
+            Idle                                    maBufferIdle;
+
+            // Range for buffering (in pixel to be independent from mapMode)
+            basegfx::B2IRange                       maBufferRememberedRangePixel;
+
+            // link for timer
+            DECL_LINK(ImpBufferTimerHandler, Timer*, void);
+
+            // Internal methods for buffering
+            void ImpPrepareBufferDevice();
+            void ImpRestoreBackground() const ;
+            void ImpRestoreBackground(const vcl::Region& rRegionPixel) const;
+            void ImpSaveBackground(const vcl::Region& rRegion, OutputDevice* pPreRenderDevice);
+
+            OverlayManagerBuffered(OutputDevice& rOutputDevice);
+            virtual ~OverlayManagerBuffered() override;
+
+        public:
+            static rtl::Reference<OverlayManager> create(OutputDevice& rOutputDevice);
+
+            // complete redraw
+            virtual void completeRedraw(const vcl::Region& rRegion, OutputDevice* pPreRenderDevice = nullptr) const override;
+
+            // flush. Do buffered updates.
+            virtual void flush() override;
+
+            // invalidate the given range at local OutputDevice
+            virtual void invalidateRange(const basegfx::B2DRange& rRange) override;
+        };
+} // end of namespace sdr::overlay
+
+
+#endif // INCLUDED_SVX_INC_SDR_OVERLAY_OVERLAYMANAGERBUFFERED_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */