SlsScrollBarManager.hxx

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * This file incorporates work covered by the following license notice:
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 *   Licensed to the Apache Software Foundation (ASF) under one or more
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 *   ownership. The ASF licenses this file to you under the Apache
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#pragma once
 
#include <tools/link.hxx>
#include <tools/gen.hxx>
#include <svtools/scrolladaptor.hxx>
#include <vcl/timer.hxx>
#include <vcl/vclptr.hxx>
 
#include <functional>
 
namespace sd { class Window; }
 
namespace sd::slidesorter { class SlideSorter; }
 
namespace sd::slidesorter::controller {
 
class ScrollBarManager
{
public:
    ScrollBarManager (SlideSorter& rSlideSorter);
 
    ~ScrollBarManager();
 
    void Connect();
 
    void Disconnect();
 
    void UpdateScrollBars (
        bool bScrollToCurrentPosition);
 
    ::tools::Rectangle PlaceScrollBars (
        const ::tools::Rectangle& rAvailableArea,
        const bool bIsHorizontalScrollBarAllowed,
        const bool bIsVerticalScrollBarAllowed);
 
    void SetTopLeft (const Point& rNewTopLeft);
 
    int GetVerticalScrollBarWidth() const;
 
    int GetHorizontalScrollBarHeight() const;
 
    bool AutoScroll (
        const Point& rMouseWindowPosition,
        const ::std::function<void ()>& rAutoScrollFunctor);
 
    void StopAutoScroll();
 
    void clearAutoScrollFunctor();
 
    enum Orientation { Orientation_Horizontal, Orientation_Vertical };
    void Scroll(
        const Orientation eOrientation,
        const sal_Int32 nDistance);
 
private:
    SlideSorter& mrSlideSorter;
 
    VclPtr<ScrollAdaptor> mpHorizontalScrollBar;
 
    VclPtr<ScrollAdaptor> mpVerticalScrollBar;
 
    double mnHorizontalPosition;
    double mnVerticalPosition;
    Size maScrollBorder;
 
    Timer maAutoScrollTimer;
    Size maAutoScrollOffset;
    bool mbIsAutoScrollActive;
 
    VclPtr<sd::Window> mpContentWindow;
 
    ::std::function<void ()> maAutoScrollFunctor;
 
    void SetWindowOrigin (
        double nHorizontalPosition,
        double nVerticalPosition);
 
    ::tools::Rectangle DetermineScrollBarVisibilities(
        const ::tools::Rectangle& rAvailableArea,
        const bool bIsHorizontalScrollBarAllowed,
        const bool bIsVerticalScrollBarAllowed);
 
    bool TestScrollBarVisibilities (
        bool bHorizontalScrollBarVisible,
        bool bVerticalScrollBarVisible,
        const ::tools::Rectangle& rAvailableArea);
 
    void CalcAutoScrollOffset (const Point& rMouseWindowPosition);
    bool RepeatAutoScroll();
 
    DECL_LINK(HorizontalScrollBarHandler, weld::Scrollbar&, void);
    DECL_LINK(VerticalScrollBarHandler, weld::Scrollbar&, void);
    DECL_LINK(AutoScrollTimeoutHandler, Timer *, void);
 
    void PlaceHorizontalScrollBar (const ::tools::Rectangle& aArea);
    void PlaceVerticalScrollBar (const ::tools::Rectangle& aArea);
};
 
} // end of namespace ::sd::slidesorter::controller
 
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