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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_SD_SOURCE_UI_SLIDESORTER_INC_CONTROLLER_SLSVISIBLEAREAMANAGER_HXX
#define INCLUDED_SD_SOURCE_UI_SLIDESORTER_INC_CONTROLLER_SLSVISIBLEAREAMANAGER_HXX
#include <model/SlsSharedPageDescriptor.hxx>
#include <o3tl/optional.hxx>
#include <tools/gen.hxx>
#include <vector>
namespace sd { namespace slidesorter { class SlideSorter; } }
namespace sd { namespace slidesorter { namespace 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();
::o3tl::optional<Point> GetRequestedTopLeft() const;
};
} } } // end of namespace ::sd::slidesorter::view
#endif
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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