1 files changed, 837 insertions, 0 deletions

diff --git a/sdext/source/presenter/PresenterScrollBar.cxx b/sdext/source/presenter/PresenterScrollBar.cxx
new file mode 100644
index 000000000..46f1490e3
--- /dev/null
+++ b/sdext/source/presenter/PresenterScrollBar.cxx
@@ -0,0 +1,837 @@
+/* -*- 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 .
+ */
+
+#include "PresenterScrollBar.hxx"
+#include "PresenterBitmapContainer.hxx"
+#include "PresenterCanvasHelper.hxx"
+#include "PresenterGeometryHelper.hxx"
+#include "PresenterPaintManager.hxx"
+#include "PresenterTimer.hxx"
+#include "PresenterUIPainter.hxx"
+#include <com/sun/star/awt/PosSize.hpp>
+#include <com/sun/star/awt/XWindowPeer.hpp>
+#include <com/sun/star/rendering/CompositeOperation.hpp>
+#include <com/sun/star/rendering/XPolyPolygon2D.hpp>
+
+#include <algorithm>
+#include <memory>
+#include <math.h>
+
+using namespace ::com::sun::star;
+using namespace ::com::sun::star::uno;
+
+const static double gnScrollBarGap (10);
+
+namespace sdext::presenter {
+
+//===== PresenterScrollBar::MousePressRepeater ================================
+
+class PresenterScrollBar::MousePressRepeater
+    : public std::enable_shared_from_this<MousePressRepeater>
+{
+public:
+    explicit MousePressRepeater (const ::rtl::Reference<PresenterScrollBar>& rpScrollBar);
+    void Dispose();
+    void Start (const PresenterScrollBar::Area& reArea);
+    void Stop();
+    void SetMouseArea (const PresenterScrollBar::Area& reArea);
+
+private:
+    void Callback ();
+    void Execute();
+
+    sal_Int32 mnMousePressRepeaterTaskId;
+    ::rtl::Reference<PresenterScrollBar> mpScrollBar;
+    PresenterScrollBar::Area meMouseArea;
+};
+
+//===== PresenterScrollBar ====================================================
+
+std::weak_ptr<PresenterBitmapContainer> PresenterScrollBar::mpSharedBitmaps;
+
+PresenterScrollBar::PresenterScrollBar (
+    const Reference<XComponentContext>& rxComponentContext,
+    const Reference<awt::XWindow>& rxParentWindow,
+    const std::shared_ptr<PresenterPaintManager>& rpPaintManager,
+    const ::std::function<void (double)>& rThumbMotionListener)
+    : PresenterScrollBarInterfaceBase(m_aMutex),
+      mxComponentContext(rxComponentContext),
+      mxWindow(),
+      mxCanvas(),
+      mxPresenterHelper(),
+      mpPaintManager(rpPaintManager),
+      mnThumbPosition(0),
+      mnTotalSize(0),
+      mnThumbSize(0),
+      mnLineHeight(10),
+      maDragAnchor(-1,-1),
+      maThumbMotionListener(rThumbMotionListener),
+      meButtonDownArea(None),
+      meMouseMoveArea(None),
+      mbIsNotificationActive(false),
+      mpBitmaps(),
+      mpPrevButtonDescriptor(),
+      mpNextButtonDescriptor(),
+      mpPagerStartDescriptor(),
+      mpPagerCenterDescriptor(),
+      mpPagerEndDescriptor(),
+      mpThumbStartDescriptor(),
+      mpThumbCenterDescriptor(),
+      mpThumbEndDescriptor(),
+      mpMousePressRepeater(std::make_shared<MousePressRepeater>(this)),
+      mpBackgroundBitmap(),
+      mpCanvasHelper(new PresenterCanvasHelper())
+{
+    try
+    {
+        Reference<lang::XMultiComponentFactory> xFactory (rxComponentContext->getServiceManager());
+        if ( ! xFactory.is())
+            throw RuntimeException();
+
+        mxPresenterHelper.set(
+            xFactory->createInstanceWithContext(
+                "com.sun.star.comp.Draw.PresenterHelper",
+                rxComponentContext),
+            UNO_QUERY_THROW);
+
+        if (mxPresenterHelper.is())
+            mxWindow = mxPresenterHelper->createWindow(rxParentWindow,
+                false,
+                false,
+                false,
+                false);
+
+        // Make the background transparent.  The slide show paints its own background.
+        Reference<awt::XWindowPeer> xPeer (mxWindow, UNO_QUERY_THROW);
+        xPeer->setBackground(0xff000000);
+
+        mxWindow->setVisible(true);
+        mxWindow->addWindowListener(this);
+        mxWindow->addPaintListener(this);
+        mxWindow->addMouseListener(this);
+        mxWindow->addMouseMotionListener(this);
+    }
+    catch (RuntimeException&)
+    {
+    }
+}
+
+PresenterScrollBar::~PresenterScrollBar()
+{
+}
+
+void SAL_CALL PresenterScrollBar::disposing()
+{
+    mpMousePressRepeater->Dispose();
+
+    if (mxWindow.is())
+    {
+        mxWindow->removeWindowListener(this);
+        mxWindow->removePaintListener(this);
+        mxWindow->removeMouseListener(this);
+        mxWindow->removeMouseMotionListener(this);
+
+        Reference<lang::XComponent> xComponent = mxWindow;
+        mxWindow = nullptr;
+        if (xComponent.is())
+            xComponent->dispose();
+    }
+
+    mpBitmaps.reset();
+}
+
+void PresenterScrollBar::SetVisible (const bool bIsVisible)
+{
+    if (mxWindow.is())
+        mxWindow->setVisible(bIsVisible);
+}
+
+void PresenterScrollBar::SetPosSize (const css::geometry::RealRectangle2D& rBox)
+{
+    if (mxWindow.is())
+    {
+        mxWindow->setPosSize(
+            sal_Int32(floor(rBox.X1)),
+            sal_Int32(ceil(rBox.Y1)),
+            sal_Int32(ceil(rBox.X2-rBox.X1)),
+            sal_Int32(floor(rBox.Y2-rBox.Y1)),
+            awt::PosSize::POSSIZE);
+        UpdateBorders();
+    }
+}
+
+void PresenterScrollBar::SetThumbPosition (
+    double nPosition,
+    const bool bAsynchronousUpdate)
+{
+    nPosition = ValidateThumbPosition(nPosition);
+
+    if (nPosition == mnThumbPosition || mbIsNotificationActive)
+        return;
+
+    mnThumbPosition = nPosition;
+
+    UpdateBorders();
+    Repaint(GetRectangle(Total), bAsynchronousUpdate);
+
+    mbIsNotificationActive = true;
+    try
+    {
+        maThumbMotionListener(mnThumbPosition);
+    }
+    catch (Exception&)
+    {
+    }
+    mbIsNotificationActive = false;
+}
+
+
+void PresenterScrollBar::SetTotalSize (const double nTotalSize)
+{
+    if (mnTotalSize != nTotalSize)
+    {
+        mnTotalSize = nTotalSize + 1;
+        UpdateBorders();
+        Repaint(GetRectangle(Total), false);
+    }
+}
+
+void PresenterScrollBar::SetThumbSize (const double nThumbSize)
+{
+    OSL_ASSERT(nThumbSize>=0);
+    if (mnThumbSize != nThumbSize)
+    {
+        mnThumbSize = nThumbSize;
+        UpdateBorders();
+        Repaint(GetRectangle(Total), false);
+    }
+}
+
+
+void PresenterScrollBar::SetLineHeight (const double nLineHeight)
+{
+    mnLineHeight = nLineHeight;
+}
+
+
+void PresenterScrollBar::SetCanvas (const Reference<css::rendering::XCanvas>& rxCanvas)
+{
+    if (mxCanvas == rxCanvas)
+        return;
+
+    mxCanvas = rxCanvas;
+    if (!mxCanvas.is())
+        return;
+
+    if (mpBitmaps == nullptr)
+    {
+        mpBitmaps = mpSharedBitmaps.lock();
+        if (!mpBitmaps)
+        {
+            try
+            {
+                mpBitmaps = std::make_shared<PresenterBitmapContainer>(
+                    "PresenterScreenSettings/ScrollBar/Bitmaps",
+                    std::shared_ptr<PresenterBitmapContainer>(),
+                    mxComponentContext,
+                    mxCanvas);
+                mpSharedBitmaps = mpBitmaps;
+            }
+            catch(Exception&)
+            {
+                OSL_ASSERT(false);
+            }
+        }
+        UpdateBitmaps();
+        UpdateBorders();
+    }
+
+    Repaint(GetRectangle(Total), false);
+}
+
+void PresenterScrollBar::SetBackground (const SharedBitmapDescriptor& rpBackgroundBitmap)
+{
+    mpBackgroundBitmap = rpBackgroundBitmap;
+}
+
+void PresenterScrollBar::CheckValues()
+{
+    mnThumbPosition = ValidateThumbPosition(mnThumbPosition);
+}
+
+double PresenterScrollBar::ValidateThumbPosition (double nPosition)
+{
+    if (nPosition + mnThumbSize > mnTotalSize)
+        nPosition = mnTotalSize - mnThumbSize;
+    if (nPosition < 0)
+        nPosition = 0;
+    return nPosition;
+}
+
+void PresenterScrollBar::Paint (
+    const awt::Rectangle& rUpdateBox)
+{
+    if ( ! mxCanvas.is() || ! mxWindow.is())
+    {
+        OSL_ASSERT(mxCanvas.is());
+        OSL_ASSERT(mxWindow.is());
+        return;
+    }
+
+    if (PresenterGeometryHelper::AreRectanglesDisjoint (rUpdateBox, mxWindow->getPosSize()))
+        return;
+
+    PaintBackground(rUpdateBox);
+    PaintComposite(rUpdateBox, PagerUp,
+        mpPagerStartDescriptor, mpPagerCenterDescriptor, SharedBitmapDescriptor());
+    PaintComposite(rUpdateBox, PagerDown,
+        SharedBitmapDescriptor(), mpPagerCenterDescriptor, mpPagerEndDescriptor);
+    PaintComposite(rUpdateBox, Thumb,
+        mpThumbStartDescriptor, mpThumbCenterDescriptor, mpThumbEndDescriptor);
+    PaintBitmap(rUpdateBox, PrevButton, mpPrevButtonDescriptor);
+    PaintBitmap(rUpdateBox, NextButton, mpNextButtonDescriptor);
+
+    Reference<rendering::XSpriteCanvas> xSpriteCanvas (mxCanvas, UNO_QUERY);
+    if (xSpriteCanvas.is())
+        xSpriteCanvas->updateScreen(false);
+}
+
+//----- XWindowListener -------------------------------------------------------
+
+void SAL_CALL PresenterScrollBar::windowResized (const css::awt::WindowEvent&) {}
+
+void SAL_CALL PresenterScrollBar::windowMoved (const css::awt::WindowEvent&) {}
+
+void SAL_CALL PresenterScrollBar::windowShown (const css::lang::EventObject&) {}
+
+void SAL_CALL PresenterScrollBar::windowHidden (const css::lang::EventObject&) {}
+
+//----- XPaintListener --------------------------------------------------------
+
+void SAL_CALL PresenterScrollBar::windowPaint (const css::awt::PaintEvent& rEvent)
+{
+    if (mxWindow.is())
+    {
+        awt::Rectangle aRepaintBox (rEvent.UpdateRect);
+        const awt::Rectangle aWindowBox (mxWindow->getPosSize());
+        aRepaintBox.X += aWindowBox.X;
+        aRepaintBox.Y += aWindowBox.Y;
+        Paint(aRepaintBox);
+
+        Reference<rendering::XSpriteCanvas> xSpriteCanvas (mxCanvas, UNO_QUERY);
+        if (xSpriteCanvas.is())
+            xSpriteCanvas->updateScreen(false);
+    }
+}
+
+//----- XMouseListener --------------------------------------------------------
+
+void SAL_CALL PresenterScrollBar::mousePressed (const css::awt::MouseEvent& rEvent)
+{
+    maDragAnchor.X = rEvent.X;
+    maDragAnchor.Y = rEvent.Y;
+    meButtonDownArea = GetArea(rEvent.X, rEvent.Y);
+
+    mpMousePressRepeater->Start(meButtonDownArea);
+}
+
+void SAL_CALL PresenterScrollBar::mouseReleased (const css::awt::MouseEvent&)
+{
+    mpMousePressRepeater->Stop();
+
+    if (mxPresenterHelper.is())
+        mxPresenterHelper->releaseMouse(mxWindow);
+}
+
+void SAL_CALL PresenterScrollBar::mouseEntered (const css::awt::MouseEvent&) {}
+
+void SAL_CALL PresenterScrollBar::mouseExited (const css::awt::MouseEvent&)
+{
+    if (meMouseMoveArea != None)
+    {
+        const Area eOldMouseMoveArea (meMouseMoveArea);
+        meMouseMoveArea = None;
+        Repaint(GetRectangle(eOldMouseMoveArea), true);
+    }
+    meButtonDownArea = None;
+    meMouseMoveArea = None;
+
+    mpMousePressRepeater->Stop();
+}
+
+//----- XMouseMotionListener --------------------------------------------------
+
+void SAL_CALL PresenterScrollBar::mouseMoved (const css::awt::MouseEvent& rEvent)
+{
+    const Area eArea (GetArea(rEvent.X, rEvent.Y));
+    if (eArea != meMouseMoveArea)
+    {
+        const Area eOldMouseMoveArea (meMouseMoveArea);
+        meMouseMoveArea = eArea;
+        if (eOldMouseMoveArea != None)
+            Repaint(GetRectangle(eOldMouseMoveArea), meMouseMoveArea==None);
+        if (meMouseMoveArea != None)
+            Repaint(GetRectangle(meMouseMoveArea), true);
+    }
+    mpMousePressRepeater->SetMouseArea(eArea);
+}
+
+void SAL_CALL PresenterScrollBar::mouseDragged (const css::awt::MouseEvent& rEvent)
+{
+    if (meButtonDownArea != Thumb)
+        return;
+
+    mpMousePressRepeater->Stop();
+
+    if (mxPresenterHelper.is())
+        mxPresenterHelper->captureMouse(mxWindow);
+
+    const double nDragDistance (GetDragDistance(rEvent.X,rEvent.Y));
+    UpdateDragAnchor(nDragDistance);
+    if (nDragDistance != 0)
+    {
+        SetThumbPosition(mnThumbPosition + nDragDistance, false);
+    }
+}
+
+//----- lang::XEventListener --------------------------------------------------
+
+void SAL_CALL PresenterScrollBar::disposing (const css::lang::EventObject& rEvent)
+{
+    if (rEvent.Source == mxWindow)
+        mxWindow = nullptr;
+}
+
+
+geometry::RealRectangle2D const & PresenterScrollBar::GetRectangle (const Area eArea) const
+{
+    OSL_ASSERT(eArea>=0 && eArea<AreaCount);
+
+    return maBox[eArea];
+}
+
+void PresenterScrollBar::Repaint (
+    const geometry::RealRectangle2D& rBox,
+    const bool bAsynchronousUpdate)
+{
+    if (mpPaintManager != nullptr)
+        mpPaintManager->Invalidate(
+            mxWindow,
+            PresenterGeometryHelper::ConvertRectangle(rBox),
+            bAsynchronousUpdate);
+}
+
+void PresenterScrollBar::PaintBackground(
+    const css::awt::Rectangle& rUpdateBox)
+{
+    if (mpBackgroundBitmap.get() == nullptr)
+        return;
+
+    const awt::Rectangle aWindowBox (mxWindow->getPosSize());
+    mpCanvasHelper->Paint(
+        mpBackgroundBitmap,
+        mxCanvas,
+        rUpdateBox,
+        aWindowBox,
+        awt::Rectangle());
+}
+
+void PresenterScrollBar::PaintBitmap(
+    const css::awt::Rectangle& rUpdateBox,
+    const Area eArea,
+    const SharedBitmapDescriptor& rpBitmaps)
+{
+    const geometry::RealRectangle2D aLocalBox (GetRectangle(eArea));
+    const awt::Rectangle aWindowBox (mxWindow->getPosSize());
+    geometry::RealRectangle2D aBox (aLocalBox);
+    aBox.X1 += aWindowBox.X;
+    aBox.Y1 += aWindowBox.Y;
+    aBox.X2 += aWindowBox.X;
+    aBox.Y2 += aWindowBox.Y;
+
+    Reference<rendering::XBitmap> xBitmap (GetBitmap(eArea,rpBitmaps));
+
+    if (!xBitmap.is())
+        return;
+
+    Reference<rendering::XPolyPolygon2D> xClipPolygon (
+        PresenterGeometryHelper::CreatePolygon(
+            PresenterGeometryHelper::Intersection(rUpdateBox,
+                PresenterGeometryHelper::ConvertRectangle(aBox)),
+            mxCanvas->getDevice()));
+
+    const rendering::ViewState aViewState (
+        geometry::AffineMatrix2D(1,0,0, 0,1,0),
+        xClipPolygon);
+
+    const geometry::IntegerSize2D aBitmapSize (xBitmap->getSize());
+    rendering::RenderState aRenderState (
+        geometry::AffineMatrix2D(
+            1,0,aBox.X1 + (aBox.X2-aBox.X1 - aBitmapSize.Width)/2,
+            0,1,aBox.Y1 + (aBox.Y2-aBox.Y1 - aBitmapSize.Height)/2),
+        nullptr,
+        Sequence<double>(4),
+        rendering::CompositeOperation::SOURCE);
+
+    mxCanvas->drawBitmap(
+        xBitmap,
+        aViewState,
+        aRenderState);
+}
+
+PresenterScrollBar::Area PresenterScrollBar::GetArea (const double nX, const double nY) const
+{
+    const geometry::RealPoint2D aPoint(nX, nY);
+
+    if (PresenterGeometryHelper::IsInside(GetRectangle(Pager), aPoint))
+    {
+        if (PresenterGeometryHelper::IsInside(GetRectangle(Thumb), aPoint))
+            return Thumb;
+        else if (PresenterGeometryHelper::IsInside(GetRectangle(PagerUp), aPoint))
+            return PagerUp;
+        else if (PresenterGeometryHelper::IsInside(GetRectangle(PagerDown), aPoint))
+            return PagerDown;
+    }
+    else if (PresenterGeometryHelper::IsInside(GetRectangle(PrevButton), aPoint))
+        return PrevButton;
+    else if (PresenterGeometryHelper::IsInside(GetRectangle(NextButton), aPoint))
+        return NextButton;
+
+    return None;
+}
+
+void PresenterScrollBar::UpdateWidthOrHeight (
+    sal_Int32& rSize,
+    const SharedBitmapDescriptor& rpDescriptor)
+{
+    if (rpDescriptor.get() != nullptr)
+    {
+        Reference<rendering::XBitmap> xBitmap (rpDescriptor->GetNormalBitmap());
+        if (xBitmap.is())
+        {
+            const geometry::IntegerSize2D aBitmapSize (xBitmap->getSize());
+            const sal_Int32 nBitmapSize = static_cast<sal_Int32>(GetMinor(aBitmapSize.Width, aBitmapSize.Height));
+            if (nBitmapSize > rSize)
+                rSize = nBitmapSize;
+        }
+    }
+}
+
+css::uno::Reference<css::rendering::XBitmap> PresenterScrollBar::GetBitmap (
+    const Area eArea,
+    const SharedBitmapDescriptor& rpBitmaps) const
+{
+    if (rpBitmaps.get() == nullptr)
+        return nullptr;
+    else
+        return rpBitmaps->GetBitmap(GetBitmapMode(eArea));
+}
+
+PresenterBitmapContainer::BitmapDescriptor::Mode PresenterScrollBar::GetBitmapMode (
+    const Area eArea) const
+{
+    if (IsDisabled(eArea))
+        return PresenterBitmapContainer::BitmapDescriptor::Disabled;
+    else if (eArea == meMouseMoveArea)
+        return PresenterBitmapContainer::BitmapDescriptor::MouseOver;
+    else
+        return PresenterBitmapContainer::BitmapDescriptor::Normal;
+}
+
+bool PresenterScrollBar::IsDisabled (const Area eArea) const
+{
+    OSL_ASSERT(eArea>=0 && eArea<AreaCount);
+
+    return ! maEnabledState[eArea];
+}
+
+//===== PresenterVerticalScrollBar ============================================
+
+PresenterVerticalScrollBar::PresenterVerticalScrollBar (
+    const Reference<XComponentContext>& rxComponentContext,
+    const Reference<awt::XWindow>& rxParentWindow,
+    const std::shared_ptr<PresenterPaintManager>& rpPaintManager,
+    const ::std::function<void (double)>& rThumbMotionListener)
+    : PresenterScrollBar(rxComponentContext, rxParentWindow, rpPaintManager, rThumbMotionListener),
+      mnScrollBarWidth(0)
+{
+}
+
+PresenterVerticalScrollBar::~PresenterVerticalScrollBar()
+{
+}
+
+double PresenterVerticalScrollBar::GetDragDistance (const sal_Int32, const sal_Int32 nY) const
+{
+    const double nDistance (nY - maDragAnchor.Y);
+    if (nDistance == 0)
+        return 0;
+    else
+    {
+        const awt::Rectangle aWindowBox (mxWindow->getPosSize());
+        const double nBarWidth (aWindowBox.Width);
+        const double nPagerHeight (aWindowBox.Height - 2*nBarWidth);
+        const double nDragDistance (mnTotalSize / nPagerHeight * nDistance);
+        if (nDragDistance + mnThumbPosition < 0)
+            return -mnThumbPosition;
+        else if (mnThumbPosition + nDragDistance > mnTotalSize-mnThumbSize)
+            return mnTotalSize-mnThumbSize-mnThumbPosition;
+        else
+            return nDragDistance;
+    }
+}
+
+void PresenterVerticalScrollBar::UpdateDragAnchor (const double nDragDistance)
+{
+    const awt::Rectangle aWindowBox (mxWindow->getPosSize());
+    const double nBarWidth (aWindowBox.Width);
+    const double nPagerHeight (aWindowBox.Height - 2*nBarWidth);
+    maDragAnchor.Y += nDragDistance * nPagerHeight /  mnTotalSize;
+}
+
+sal_Int32 PresenterVerticalScrollBar::GetSize() const
+{
+    return mnScrollBarWidth;
+}
+
+double PresenterVerticalScrollBar::GetMinor (const double nX, const double) const
+{
+    return nX;
+}
+
+void PresenterVerticalScrollBar::UpdateBorders()
+{
+    const awt::Rectangle aWindowBox (mxWindow->getPosSize());
+    double nBottom = aWindowBox.Height;
+
+    if (mpNextButtonDescriptor.get() != nullptr)
+    {
+        Reference<rendering::XBitmap> xBitmap (mpNextButtonDescriptor->GetNormalBitmap());
+        if (xBitmap.is())
+        {
+            geometry::IntegerSize2D aSize (xBitmap->getSize());
+            maBox[NextButton] = geometry::RealRectangle2D(
+                0, nBottom - aSize.Height, aWindowBox.Width, nBottom);
+            nBottom -= aSize.Height + gnScrollBarGap;
+        }
+    }
+    if (mpPrevButtonDescriptor.get() != nullptr)
+    {
+        Reference<rendering::XBitmap> xBitmap (mpPrevButtonDescriptor->GetNormalBitmap());
+        if (xBitmap.is())
+        {
+            geometry::IntegerSize2D aSize (xBitmap->getSize());
+            maBox[PrevButton] = geometry::RealRectangle2D(
+                0, nBottom - aSize.Height, aWindowBox.Width, nBottom);
+            nBottom -= aSize.Height + gnScrollBarGap;
+        }
+    }
+    const double nPagerHeight (nBottom);
+    maBox[Pager] = geometry::RealRectangle2D(
+        0,0, aWindowBox.Width, nBottom);
+    if (mnTotalSize < 1)
+    {
+        maBox[Thumb] = maBox[Pager];
+
+        // Set up the enabled/disabled states.
+        maEnabledState[PrevButton] = false;
+        maEnabledState[PagerUp] = false;
+        maEnabledState[NextButton] = false;
+        maEnabledState[PagerDown] = false;
+        maEnabledState[Thumb] = false;
+    }
+    else
+    {
+        const double nThumbSize = ::std::min(mnThumbSize,mnTotalSize);
+        const double nThumbPosition = ::std::min(::std::max(0.0,mnThumbPosition), mnTotalSize - nThumbSize);
+        maBox[Thumb] = geometry::RealRectangle2D(
+            0, nThumbPosition / mnTotalSize * nPagerHeight,
+            aWindowBox.Width,
+                (nThumbPosition+nThumbSize) / mnTotalSize * nPagerHeight);
+
+        // Set up the enabled/disabled states.
+        maEnabledState[PrevButton] = nThumbPosition>0;
+        maEnabledState[PagerUp] = nThumbPosition>0;
+        maEnabledState[NextButton] = nThumbPosition+nThumbSize < mnTotalSize;
+        maEnabledState[PagerDown] = nThumbPosition+nThumbSize < mnTotalSize;
+        maEnabledState[Thumb] = nThumbSize < mnTotalSize;
+    }
+    maBox[PagerUp] = geometry::RealRectangle2D(
+        maBox[Pager].X1, maBox[Pager].Y1, maBox[Pager].X2, maBox[Thumb].Y1-1);
+    maBox[PagerDown] = geometry::RealRectangle2D(
+        maBox[Pager].X1, maBox[Thumb].Y2+1, maBox[Pager].X2, maBox[Pager].Y2);
+    maBox[Total] = PresenterGeometryHelper::Union(
+        PresenterGeometryHelper::Union(maBox[PrevButton], maBox[NextButton]),
+        maBox[Pager]);
+}
+
+void PresenterVerticalScrollBar::UpdateBitmaps()
+{
+    if (mpBitmaps == nullptr)
+        return;
+
+    mpPrevButtonDescriptor = mpBitmaps->GetBitmap("Up");
+    mpNextButtonDescriptor = mpBitmaps->GetBitmap("Down");
+    mpPagerStartDescriptor = mpBitmaps->GetBitmap("PagerTop");
+    mpPagerCenterDescriptor = mpBitmaps->GetBitmap("PagerVertical");
+    mpPagerEndDescriptor = mpBitmaps->GetBitmap("PagerBottom");
+    mpThumbStartDescriptor = mpBitmaps->GetBitmap("ThumbTop");
+    mpThumbCenterDescriptor = mpBitmaps->GetBitmap("ThumbVertical");
+    mpThumbEndDescriptor = mpBitmaps->GetBitmap("ThumbBottom");
+
+    mnScrollBarWidth = 0;
+    UpdateWidthOrHeight(mnScrollBarWidth, mpPrevButtonDescriptor);
+    UpdateWidthOrHeight(mnScrollBarWidth, mpNextButtonDescriptor);
+    UpdateWidthOrHeight(mnScrollBarWidth, mpPagerStartDescriptor);
+    UpdateWidthOrHeight(mnScrollBarWidth, mpPagerCenterDescriptor);
+    UpdateWidthOrHeight(mnScrollBarWidth, mpPagerEndDescriptor);
+    UpdateWidthOrHeight(mnScrollBarWidth, mpThumbStartDescriptor);
+    UpdateWidthOrHeight(mnScrollBarWidth, mpThumbCenterDescriptor);
+    UpdateWidthOrHeight(mnScrollBarWidth, mpThumbEndDescriptor);
+    if (mnScrollBarWidth == 0)
+        mnScrollBarWidth = 20;
+}
+
+void PresenterVerticalScrollBar::PaintComposite(
+    const css::awt::Rectangle& rUpdateBox,
+    const Area eArea,
+    const SharedBitmapDescriptor& rpStartBitmaps,
+    const SharedBitmapDescriptor& rpCenterBitmaps,
+    const SharedBitmapDescriptor& rpEndBitmaps)
+{
+    const awt::Rectangle aWindowBox (mxWindow->getPosSize());
+    geometry::RealRectangle2D aBox (GetRectangle(eArea));
+    aBox.X1 += aWindowBox.X;
+    aBox.Y1 += aWindowBox.Y;
+    aBox.X2 += aWindowBox.X;
+    aBox.Y2 += aWindowBox.Y;
+
+    // Get bitmaps and sizes.
+
+    PresenterUIPainter::PaintVerticalBitmapComposite(
+        mxCanvas,
+        rUpdateBox,
+        (eArea == Thumb
+            ? PresenterGeometryHelper::ConvertRectangleWithConstantSize(aBox)
+            : PresenterGeometryHelper::ConvertRectangle(aBox)),
+        GetBitmap(eArea, rpStartBitmaps),
+        GetBitmap(eArea, rpCenterBitmaps),
+        GetBitmap(eArea, rpEndBitmaps));
+}
+
+//===== PresenterScrollBar::MousePressRepeater ================================
+
+PresenterScrollBar::MousePressRepeater::MousePressRepeater (
+    const ::rtl::Reference<PresenterScrollBar>& rpScrollBar)
+    : mnMousePressRepeaterTaskId(PresenterTimer::NotAValidTaskId),
+      mpScrollBar(rpScrollBar),
+      meMouseArea(PresenterScrollBar::None)
+{
+}
+
+void PresenterScrollBar::MousePressRepeater::Dispose()
+{
+    Stop();
+    mpScrollBar = nullptr;
+}
+
+void PresenterScrollBar::MousePressRepeater::Start (const PresenterScrollBar::Area& reArea)
+{
+    meMouseArea = reArea;
+
+    if (mnMousePressRepeaterTaskId == PresenterTimer::NotAValidTaskId)
+    {
+        // Execute key press operation at least this one time.
+        Execute();
+
+        // Schedule repeated executions.
+        auto pThis(shared_from_this());
+        mnMousePressRepeaterTaskId = PresenterTimer::ScheduleRepeatedTask (
+            mpScrollBar->GetComponentContext(),
+            [pThis] (TimeValue const&) { return pThis->Callback(); },
+            500000000,
+            250000000);
+    }
+    else
+    {
+        // There is already an active repeating task.
+    }
+}
+
+void PresenterScrollBar::MousePressRepeater::Stop()
+{
+    if (mnMousePressRepeaterTaskId != PresenterTimer::NotAValidTaskId)
+    {
+        const sal_Int32 nTaskId (mnMousePressRepeaterTaskId);
+        mnMousePressRepeaterTaskId = PresenterTimer::NotAValidTaskId;
+        PresenterTimer::CancelTask(nTaskId);
+    }
+}
+
+void PresenterScrollBar::MousePressRepeater::SetMouseArea(const PresenterScrollBar::Area& reArea)
+{
+    if (meMouseArea != reArea)
+    {
+        if (mnMousePressRepeaterTaskId != PresenterTimer::NotAValidTaskId)
+        {
+            Stop();
+        }
+    }
+}
+
+void PresenterScrollBar::MousePressRepeater::Callback ()
+{
+    if (mpScrollBar.get() == nullptr)
+    {
+        Stop();
+        return;
+    }
+
+    Execute();
+}
+
+void PresenterScrollBar::MousePressRepeater::Execute()
+{
+    const double nThumbPosition (mpScrollBar->GetThumbPosition());
+    switch (meMouseArea)
+    {
+        case PrevButton:
+            mpScrollBar->SetThumbPosition(nThumbPosition - mpScrollBar->GetLineHeight(), true);
+            break;
+
+        case NextButton:
+            mpScrollBar->SetThumbPosition(nThumbPosition + mpScrollBar->GetLineHeight(), true);
+            break;
+
+        case PagerUp:
+            mpScrollBar->SetThumbPosition(nThumbPosition - mpScrollBar->GetThumbSize()*0.8, true);
+            break;
+
+        case PagerDown:
+            mpScrollBar->SetThumbPosition(nThumbPosition + mpScrollBar->GetThumbSize()*0.8, true);
+            break;
+
+        default:
+            break;
+    }
+}
+
+} // end of namespace ::sdext::presenter
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */