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Diffstat (limited to '')
-rw-r--r-- | sd/source/ui/slidesorter/inc/controller/SlsVisibleAreaManager.hxx | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/sd/source/ui/slidesorter/inc/controller/SlsVisibleAreaManager.hxx b/sd/source/ui/slidesorter/inc/controller/SlsVisibleAreaManager.hxx new file mode 100644 index 000000000..d9f5845af --- /dev/null +++ b/sd/source/ui/slidesorter/inc/controller/SlsVisibleAreaManager.hxx @@ -0,0 +1,90 @@ +/* -*- 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 <model/SlsSharedPageDescriptor.hxx> +#include <optional> +#include <tools/gen.hxx> +#include <vector> + +namespace sd::slidesorter +{ +class SlideSorter; +} + +namespace sd::slidesorter::controller +{ +/** Manage requests for scrolling page objects into view. +*/ +class VisibleAreaManager +{ +public: + explicit VisibleAreaManager(SlideSorter& rSlideSorter); + ~VisibleAreaManager(); + VisibleAreaManager(const VisibleAreaManager&) = delete; + VisibleAreaManager& operator=(const VisibleAreaManager&) = delete; + + void ActivateCurrentSlideTracking(); + void DeactivateCurrentSlideTracking(); + bool IsCurrentSlideTrackingActive() const { return mbIsCurrentSlideTrackingActive; } + + /** Request the current slide to be moved into the visible area. + This request is only obeyed when the current slide tracking is + active. + @see ActivateCurrentSlideTracking() and DeactivateCurrentSlideTracking() + */ + void RequestCurrentSlideVisible(); + + /** Request to make the specified page object visible. + */ + void RequestVisible(const model::SharedPageDescriptor& rpDescriptor, const bool bForce = false); + + /** Temporarily disable the update of the visible area. + */ + class TemporaryDisabler + { + public: + explicit TemporaryDisabler(SlideSorter const& rSlideSorter); + ~TemporaryDisabler(); + + private: + VisibleAreaManager& mrVisibleAreaManager; + }; + +private: + SlideSorter& mrSlideSorter; + + /** List of rectangle that someone wants to be moved into the visible + area. + Cleared on every call to ForgetVisibleRequests() and MakeVisible(). + */ + ::std::vector<::tools::Rectangle> maVisibleRequests; + + Point maRequestedVisibleTopLeft; + bool mbIsCurrentSlideTrackingActive; + int mnDisableCount; + + void MakeVisible(); + ::std::optional<Point> GetRequestedTopLeft() const; +}; + +} // end of namespace ::sd::slidesorter::view + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |