Adding upstream version 1:7.0.4.upstream/1%7.0.4upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 865 insertions, 0 deletions

diff --git a/include/vcl/layout.hxx b/include/vcl/layout.hxx
new file mode 100644
index 000000000..179a03421
--- /dev/null
+++ b/include/vcl/layout.hxx
@@ -0,0 +1,865 @@
+/* -*- 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/.
+ */
+
+#ifndef INCLUDED_VCL_LAYOUT_HXX
+#define INCLUDED_VCL_LAYOUT_HXX
+
+#include <config_options.h>
+#include <vcl/dllapi.h>
+#include <vcl/ctrl.hxx>
+#include <vcl/help.hxx>
+#include <vcl/svapp.hxx>
+#include <vcl/window.hxx>
+#include <vcl/settings.hxx>
+#include <vcl/event.hxx>
+#include <vcl/transfer.hxx>
+#include <vcl/vclptr.hxx>
+#include <vcl/IContext.hxx>
+#include <vcl/commandevent.hxx>
+#include <set>
+
+class ScrollBar;
+class ScrollBar;
+class ScrollBarBox;
+class Splitter;
+
+class VCL_DLLPUBLIC VclContainer : public vcl::Window,
+                                   public vcl::IContext
+{
+public:
+    VclContainer(vcl::Window *pParent, WinBits nStyle = WB_HIDE | WB_CLIPCHILDREN);
+
+    //These take into account the external margins of the rWindow widget
+    //while GetOptimalSize/get_preferred_size and SetPosSizePixel are
+    //oblivious to them
+    static Size getLayoutRequisition(const vcl::Window &rWindow);
+    static void setLayoutPosSize(vcl::Window &rWindow, const Point &rPos, const Size &rSize);
+
+    //applies the allocation pos and size onto rWindow via setLayoutPosSize taking into account
+    //the rWindows alignment desires within that allocation
+    static void setLayoutAllocation(vcl::Window &rWindow, const Point &rPos, const Size &rSize);
+
+    virtual void queue_resize(StateChangedType eReason = StateChangedType::Layout) override;
+protected:
+    //these are the two that need to be implemented by
+    //containers, figure out how much space you want...
+    virtual Size calculateRequisition() const = 0;
+    //..and decide what to do when set to this size
+    virtual void setAllocation(const Size &rAllocation) = 0;
+
+    virtual sal_uInt16 getDefaultAccessibleRole() const override;
+
+    // support for screenshot context menu
+    virtual void Command(const CommandEvent& rCEvt) override;
+
+public:
+    //you don't want to override these
+    virtual Size GetOptimalSize() const override;
+    virtual void SetPosSizePixel(const Point& rNewPos, const Size& rNewSize) override;
+    virtual void SetPosPixel(const Point& rAllocPos) override;
+    virtual void SetSizePixel(const Size& rAllocation) override;
+private:
+    bool m_bLayoutDirty;
+};
+
+class VCL_DLLPUBLIC VclBox : public VclContainer
+{
+protected:
+    bool m_bHomogeneous;
+    bool m_bVerticalContainer;
+    int m_nSpacing;
+public:
+    VclBox(vcl::Window *pParent, bool bHomogeneous, int nSpacing)
+        : VclContainer(pParent)
+        , m_bHomogeneous(bHomogeneous)
+        , m_bVerticalContainer(false)
+        , m_nSpacing(nSpacing)
+    {
+    }
+    void set_spacing(int nSpacing)
+    {
+        m_nSpacing = nSpacing;
+    }
+    int get_spacing() const
+    {
+        return m_nSpacing;
+    }
+    void set_homogeneous(bool bHomogeneous)
+    {
+        m_bHomogeneous = bHomogeneous;
+    }
+    virtual bool set_property(const OString &rKey, const OUString &rValue) override;
+    virtual boost::property_tree::ptree DumpAsPropertyTree() override;
+protected:
+    virtual sal_uInt16 getDefaultAccessibleRole() const override;
+    void accumulateMaxes(const Size &rChildSize, Size &rSize) const;
+    Size finalizeMaxes(const Size &rSize, sal_uInt16 nVisibleChildren) const;
+
+    virtual Size calculateRequisition() const override;
+    virtual void setAllocation(const Size &rAllocation) override;
+
+    virtual long getPrimaryDimension(const Size &rSize) const = 0;
+    virtual void setPrimaryDimension(Size &rSize, long) const = 0;
+    virtual long getPrimaryCoordinate(const Point &rPos) const = 0;
+    virtual void setPrimaryCoordinate(Point &rPos, long) const = 0;
+    virtual long getSecondaryDimension(const Size &rSize) const = 0;
+    virtual void setSecondaryDimension(Size &rSize, long) const = 0;
+
+    virtual bool getPrimaryDimensionChildExpand(const vcl::Window &rWindow) const = 0;
+};
+
+class VCL_DLLPUBLIC VclVBox : public VclBox
+{
+public:
+    VclVBox(vcl::Window *pParent, bool bHomogeneous = false, int nSpacing = 0)
+        : VclBox(pParent, bHomogeneous, nSpacing)
+    {
+        m_bVerticalContainer = true;
+    }
+protected:
+    virtual long getPrimaryDimension(const Size &rSize) const override
+    {
+        return rSize.getHeight();
+    }
+    virtual void setPrimaryDimension(Size &rSize, long nHeight) const override
+    {
+        rSize.setHeight(nHeight);
+    }
+    virtual long getPrimaryCoordinate(const Point &rPos) const override
+    {
+        return rPos.getY();
+    }
+    virtual void setPrimaryCoordinate(Point &rPos, long nPos) const override
+    {
+        rPos.setY(nPos);
+    }
+    virtual long getSecondaryDimension(const Size &rSize) const override
+    {
+        return rSize.getWidth();
+    }
+    virtual void setSecondaryDimension(Size &rSize, long nWidth) const override
+    {
+        rSize.setWidth(nWidth);
+    }
+    virtual bool getPrimaryDimensionChildExpand(const vcl::Window &rWindow) const override
+    {
+        return rWindow.get_expand() || rWindow.get_vexpand();
+    }
+};
+
+class VCL_DLLPUBLIC VclHBox : public VclBox
+{
+public:
+    VclHBox(vcl::Window *pParent, bool bHomogeneous = false, int nSpacing = 0)
+        : VclBox(pParent, bHomogeneous, nSpacing)
+    {
+        m_bVerticalContainer = false;
+    }
+protected:
+    virtual long getPrimaryDimension(const Size &rSize) const override
+    {
+        return rSize.getWidth();
+    }
+    virtual void setPrimaryDimension(Size &rSize, long nWidth) const override
+    {
+        rSize.setWidth(nWidth);
+    }
+    virtual long getPrimaryCoordinate(const Point &rPos) const override
+    {
+        return rPos.getX();
+    }
+    virtual void setPrimaryCoordinate(Point &rPos, long nPos) const override
+    {
+        rPos.setX(nPos);
+    }
+    virtual long getSecondaryDimension(const Size &rSize) const override
+    {
+        return rSize.getHeight();
+    }
+    virtual void setSecondaryDimension(Size &rSize, long nHeight) const override
+    {
+        rSize.setHeight(nHeight);
+    }
+    virtual bool getPrimaryDimensionChildExpand(const vcl::Window &rWindow) const override
+    {
+        return rWindow.get_expand() || rWindow.get_hexpand();
+    }
+};
+
+enum class VclButtonBoxStyle
+{
+    Default,
+    Spread,
+    Edge,
+    Start,
+    End,
+    Center
+};
+
+class VCL_DLLPUBLIC VclButtonBox : public VclBox
+{
+public:
+    VclButtonBox(vcl::Window *pParent)
+        : VclBox(pParent, false, Application::GetSettings().GetStyleSettings().GetDialogStyle().button_spacing)
+        , m_eLayoutStyle(VclButtonBoxStyle::Default)
+    {
+    }
+    virtual bool set_property(const OString &rKey, const OUString &rValue) override;
+    void sort_native_button_order();
+protected:
+    virtual Size calculateRequisition() const override;
+    virtual void setAllocation(const Size &rAllocation) override;
+    Size addSpacing(const Size &rSize, sal_uInt16 nVisibleChildren) const;
+private:
+    VclButtonBoxStyle m_eLayoutStyle;
+    struct Requisition
+    {
+        std::vector<long> m_aMainGroupDimensions;
+        std::vector<long> m_aSubGroupDimensions;
+        Size m_aMainGroupSize;
+        Size m_aSubGroupSize;
+    };
+    Requisition calculatePrimarySecondaryRequisitions() const;
+    Size addReqGroups(const VclButtonBox::Requisition &rReq) const;
+};
+
+class VCL_DLLPUBLIC VclVButtonBox : public VclButtonBox
+{
+public:
+    VclVButtonBox(vcl::Window *pParent)
+        : VclButtonBox(pParent)
+    {
+        m_bVerticalContainer = true;
+    }
+protected:
+    virtual long getPrimaryDimension(const Size &rSize) const override
+    {
+        return rSize.getHeight();
+    }
+    virtual void setPrimaryDimension(Size &rSize, long nHeight) const override
+    {
+        rSize.setHeight(nHeight);
+    }
+    virtual long getPrimaryCoordinate(const Point &rPos) const override
+    {
+        return rPos.getY();
+    }
+    virtual void setPrimaryCoordinate(Point &rPos, long nPos) const override
+    {
+        rPos.setY(nPos);
+    }
+    virtual long getSecondaryDimension(const Size &rSize) const override
+    {
+        return rSize.getWidth();
+    }
+    virtual void setSecondaryDimension(Size &rSize, long nWidth) const override
+    {
+        rSize.setWidth(nWidth);
+    }
+    virtual bool getPrimaryDimensionChildExpand(const vcl::Window &rWindow) const override
+    {
+        return rWindow.get_expand() || rWindow.get_vexpand();
+    }
+};
+
+class VCL_DLLPUBLIC VclHButtonBox final : public VclButtonBox
+{
+public:
+    VclHButtonBox(vcl::Window *pParent)
+        : VclButtonBox(pParent)
+    {
+        m_bVerticalContainer = false;
+    }
+private:
+    virtual long getPrimaryDimension(const Size &rSize) const override
+    {
+        return rSize.getWidth();
+    }
+    virtual void setPrimaryDimension(Size &rSize, long nWidth) const override
+    {
+        rSize.setWidth(nWidth);
+    }
+    virtual long getPrimaryCoordinate(const Point &rPos) const override
+    {
+        return rPos.getX();
+    }
+    virtual void setPrimaryCoordinate(Point &rPos, long nPos) const override
+    {
+        rPos.setX(nPos);
+    }
+    virtual long getSecondaryDimension(const Size &rSize) const override
+    {
+        return rSize.getHeight();
+    }
+    virtual void setSecondaryDimension(Size &rSize, long nHeight) const override
+    {
+        rSize.setHeight(nHeight);
+    }
+    virtual bool getPrimaryDimensionChildExpand(const vcl::Window &rWindow) const override
+    {
+        return rWindow.get_expand() || rWindow.get_hexpand();
+    }
+};
+
+class VCL_DLLPUBLIC VclGrid final : public VclContainer
+{
+private:
+    bool m_bRowHomogeneous;
+    bool m_bColumnHomogeneous;
+    int m_nRowSpacing;
+    int m_nColumnSpacing;
+
+public:
+    struct Value
+    {
+        long m_nValue;
+        bool m_bExpand;
+        Value() : m_nValue(0), m_bExpand(false) {}
+    };
+private:
+
+    Size calculateRequisitionForSpacings(sal_Int32 nRowSpacing, sal_Int32 nColSpacing) const;
+    virtual Size calculateRequisition() const override;
+    virtual void setAllocation(const Size &rAllocation) override;
+    virtual boost::property_tree::ptree DumpAsPropertyTree() override;
+public:
+    VclGrid(vcl::Window *pParent)
+        : VclContainer(pParent)
+        , m_bRowHomogeneous(false), m_bColumnHomogeneous(false)
+        , m_nRowSpacing(0), m_nColumnSpacing(0)
+    {
+    }
+    bool get_row_homogeneous() const
+    {
+        return m_bRowHomogeneous;
+    }
+    bool get_column_homogeneous() const
+    {
+        return m_bColumnHomogeneous;
+    }
+    void set_row_spacing(int nSpacing)
+    {
+        m_nRowSpacing = nSpacing;
+    }
+    void set_column_spacing(int nSpacing)
+    {
+        m_nColumnSpacing = nSpacing;
+    }
+    int get_row_spacing() const
+    {
+        return m_nRowSpacing;
+    }
+    int get_column_spacing() const
+    {
+        return m_nColumnSpacing;
+    }
+    virtual bool set_property(const OString &rKey, const OUString &rValue) override;
+};
+
+class UNLESS_MERGELIBS(VCL_DLLPUBLIC) VclBin : public VclContainer
+{
+public:
+    VclBin(vcl::Window *pParent, WinBits nStyle = WB_HIDE | WB_CLIPCHILDREN)
+        : VclContainer(pParent, nStyle)
+    {
+    }
+    virtual vcl::Window *get_child();
+    virtual const vcl::Window *get_child() const;
+    virtual Size calculateRequisition() const override;
+    virtual void setAllocation(const Size &rAllocation) override;
+};
+
+class VclPaned : public VclContainer
+{
+protected:
+    VclPtr<Splitter> m_pSplitter;
+    long m_nPosition;
+
+    VclPaned(vcl::Window *pParent, bool bVertical);
+public:
+    virtual ~VclPaned() override;
+    virtual void dispose() override;
+    long get_position() const { return m_nPosition; }
+    virtual void set_position(long nPosition) { m_nPosition = nPosition; }
+};
+
+class VclVPaned final : public VclPaned
+{
+private:
+    DECL_LINK(SplitHdl, Splitter*, void);
+    void arrange(const Size& rAllocation, long nFirstHeight, long nSecondHeight);
+
+public:
+    VclVPaned(vcl::Window *pParent);
+    virtual ~VclVPaned() override;
+    virtual Size calculateRequisition() const override;
+    virtual void setAllocation(const Size &rAllocation) override;
+    virtual void set_position(long nPosition) override;
+};
+
+class VclHPaned final : public VclPaned
+{
+private:
+    DECL_LINK(SplitHdl, Splitter*, void);
+    void arrange(const Size& rAllocation, long nFirstHeight, long nSecondHeight);
+
+public:
+    VclHPaned(vcl::Window *pParent);
+    virtual ~VclHPaned() override;
+    virtual Size calculateRequisition() const override;
+    virtual void setAllocation(const Size &rAllocation) override;
+    virtual void set_position(long nPosition) override;
+};
+
+class VclFrame final : public VclBin
+{
+private:
+    VclPtr<vcl::Window> m_pLabel;
+private:
+    friend class VclBuilder;
+    void designate_label(vcl::Window *pWindow);
+    DECL_LINK(WindowEventListener, VclWindowEvent&, void);
+public:
+    VclFrame(vcl::Window *pParent)
+        : VclBin(pParent)
+        , m_pLabel(nullptr)
+    {
+    }
+    virtual ~VclFrame() override;
+    virtual void dispose() override;
+    void set_label(const OUString &rLabel);
+    OUString get_label() const;
+    virtual vcl::Window *get_child() override;
+    virtual const vcl::Window *get_child() const override;
+    vcl::Window *get_label_widget();
+    const vcl::Window *get_label_widget() const;
+    virtual boost::property_tree::ptree DumpAsPropertyTree() override;
+private:
+    virtual Size calculateRequisition() const override;
+    virtual void setAllocation(const Size &rAllocation) override;
+    virtual OUString getDefaultAccessibleName() const override;
+};
+
+class UNLESS_MERGELIBS(VCL_DLLPUBLIC) VclAlignment final : public VclBin
+{
+public:
+    VclAlignment(vcl::Window *pParent)
+        : VclBin(pParent)
+        , m_nBottomPadding(0)
+        , m_nLeftPadding(0)
+        , m_nRightPadding(0)
+        , m_nTopPadding(0)
+    {
+    }
+    virtual bool set_property(const OString &rKey, const OUString &rValue) override;
+private:
+    virtual Size calculateRequisition() const override;
+    virtual void setAllocation(const Size &rAllocation) override;
+    sal_Int32 m_nBottomPadding;
+    sal_Int32 m_nLeftPadding;
+    sal_Int32 m_nRightPadding;
+    sal_Int32 m_nTopPadding;
+};
+
+class DisclosureButton;
+class CheckBox;
+
+class VclExpander final : public VclBin
+{
+public:
+    VclExpander(vcl::Window *pParent);
+    virtual ~VclExpander() override;
+    virtual void dispose() override;
+    virtual vcl::Window *get_child() override;
+    virtual const vcl::Window *get_child() const override;
+    virtual bool set_property(const OString &rKey, const OUString &rValue) override;
+    bool get_expanded() const;
+    void set_expanded(bool bExpanded);
+    void set_label(const OUString& rLabel);
+    virtual void StateChanged(StateChangedType nType) override;
+    void  SetExpandedHdl( const Link<VclExpander&,void>& rLink ) { maExpandedHdl = rLink; }
+private:
+    virtual Size calculateRequisition() const override;
+    virtual void setAllocation(const Size &rAllocation) override;
+    bool m_bResizeTopLevel;
+    VclPtr<DisclosureButton> m_pDisclosureButton;
+    Link<VclExpander&,void> maExpandedHdl;
+    DECL_LINK(ClickHdl, CheckBox&, void);
+};
+
+class VCL_DLLPUBLIC VclScrolledWindow final : public VclBin
+{
+public:
+    VclScrolledWindow(vcl::Window *pParent );
+    virtual ~VclScrolledWindow() override;
+    virtual void dispose() override;
+    virtual vcl::Window *get_child() override;
+    virtual const vcl::Window *get_child() const override;
+    virtual bool set_property(const OString &rKey, const OUString &rValue) override;
+    virtual void Paint(vcl::RenderContext& rRenderContext, const tools::Rectangle& rRect) override;
+    ScrollBar& getVertScrollBar() { return *m_pVScroll; }
+    ScrollBar& getHorzScrollBar() { return *m_pHScroll; }
+    Size getVisibleChildSize() const;
+    //set to true to disable the built-in scrolling callbacks to allow the user
+    //to override it
+    void setUserManagedScrolling(bool bUserManagedScrolling) { m_bUserManagedScrolling = bUserManagedScrolling;}
+    void doSetAllocation(const Size &rAllocation, bool bRetryOnFailure);
+private:
+    virtual Size calculateRequisition() const override;
+    virtual void setAllocation(const Size &rAllocation) override;
+    DECL_LINK(ScrollBarHdl, ScrollBar*, void);
+    void InitScrollBars(const Size &rRequest);
+    virtual bool EventNotify(NotifyEvent& rNEvt) override;
+    bool m_bUserManagedScrolling;
+    DrawFrameStyle m_eDrawFrameStyle;
+    VclPtr<ScrollBar> m_pVScroll;
+    VclPtr<ScrollBar> m_pHScroll;
+    VclPtr<ScrollBarBox> m_aScrollBarBox;
+};
+
+class VclViewport final : public VclBin
+{
+public:
+    VclViewport(vcl::Window *pParent)
+        : VclBin(pParent, WB_HIDE | WB_CLIPCHILDREN)
+        , m_bInitialAllocation(true)
+    {
+    }
+private:
+    virtual void setAllocation(const Size &rAllocation) override;
+    bool m_bInitialAllocation;
+};
+
+//Enforces that its children are always the same size as itself.
+//Intercepts any Commands intended for its children.
+//
+//by default the Commands are discarded, inherit from this
+//and implement "Command" to get them
+class VclEventBox final : public VclBin
+{
+private:
+    //Any Commands an EventBoxHelper receives are forwarded to its parent
+    //The VclEventBox ensures that m_aEventBoxHelper is the
+    //first child and is transparent, but covers the rest of the children
+    class EventBoxHelper : public vcl::Window
+    {
+    public:
+        EventBoxHelper(vcl::Window* pParent)
+            : Window(pParent, 0)
+        {
+            SetSizePixel(pParent->GetSizePixel());
+            EnableChildTransparentMode();
+            SetPaintTransparent(true);
+            SetBackground();
+        }
+        virtual void Command(const CommandEvent& rCEvt) override
+        {
+            GetParent()->Command(rCEvt);
+        }
+    };
+
+    VclPtr<EventBoxHelper> m_aEventBoxHelper;
+    virtual void dispose() override;
+    virtual ~VclEventBox() override;
+public:
+    VclEventBox(vcl::Window* pParent)
+        : VclBin(pParent)
+        , m_aEventBoxHelper(VclPtr<EventBoxHelper>::Create(this))
+    {
+        m_aEventBoxHelper->Show();
+    }
+    virtual vcl::Window *get_child() override;
+    virtual const vcl::Window *get_child() const override;
+    virtual Size calculateRequisition() const override;
+    virtual void setAllocation(const Size &rAllocation) override;
+
+    virtual void Command(const CommandEvent& rCEvt) override;
+};
+
+class VclSizeGroup
+{
+private:
+    std::set< VclPtr<vcl::Window> > m_aWindows;
+    bool m_bIgnoreHidden;
+    VclSizeGroupMode m_eMode;
+
+    void trigger_queue_resize();
+public:
+    VclSizeGroup()
+        : m_bIgnoreHidden(false)
+        , m_eMode(VclSizeGroupMode::Horizontal)
+    {
+    }
+    void insert(vcl::Window *pWindow)
+    {
+        m_aWindows.insert(VclPtr<vcl::Window>(pWindow));
+    }
+    void erase(vcl::Window *pWindow)
+    {
+        m_aWindows.erase(VclPtr<vcl::Window>(pWindow));
+    }
+    const std::set< VclPtr<vcl::Window> >& get_widgets() const
+    {
+        return m_aWindows;
+    }
+    std::set< VclPtr<vcl::Window> >& get_widgets()
+    {
+        return m_aWindows;
+    }
+    void set_ignore_hidden(bool bIgnoreHidden);
+    bool get_ignore_hidden() const
+    {
+        return m_bIgnoreHidden;
+    }
+    void set_mode(VclSizeGroupMode eMode);
+    VclSizeGroupMode get_mode() const
+    {
+        return m_eMode;
+    }
+    void set_property(const OString &rKey, const OUString &rValue);
+};
+
+class VCL_DLLPUBLIC VclDrawingArea final : public Control
+                                         , public DragSourceHelper
+{
+private:
+    FactoryFunction m_pFactoryFunction;
+    void* m_pUserData;
+    rtl::Reference<TransferDataContainer> m_xTransferHelper;
+    sal_Int8 m_nDragAction;
+    Link<std::pair<vcl::RenderContext&, const tools::Rectangle&>, void> m_aPaintHdl;
+    Link<const Size&, void> m_aResizeHdl;
+    Link<const MouseEvent&, bool> m_aMousePressHdl;
+    Link<const MouseEvent&, bool> m_aMouseMotionHdl;
+    Link<const MouseEvent&, bool> m_aMouseReleaseHdl;
+    Link<const KeyEvent&, bool> m_aKeyPressHdl;
+    Link<const KeyEvent&, bool> m_aKeyReleaseHdl;
+    Link<VclDrawingArea&, void> m_aStyleUpdatedHdl;
+    Link<const CommandEvent&, bool> m_aCommandHdl;
+    Link<tools::Rectangle&, OUString> m_aQueryTooltipHdl;
+    Link<OUString&, int> m_aGetSurroundingHdl;
+    Link<VclDrawingArea*, bool> m_aStartDragHdl;
+
+    virtual void Paint(vcl::RenderContext& rRenderContext, const tools::Rectangle& rRect) override
+    {
+        m_aPaintHdl.Call(std::pair<vcl::RenderContext&, const tools::Rectangle&>(rRenderContext, rRect));
+    }
+    virtual void Resize() override
+    {
+        m_aResizeHdl.Call(GetOutputSizePixel());
+    }
+    virtual void MouseMove(const MouseEvent& rMEvt) override
+    {
+        if (!m_aMouseMotionHdl.Call(rMEvt))
+            Control::MouseMove(rMEvt);
+    }
+    virtual void MouseButtonDown(const MouseEvent& rMEvt) override
+    {
+        if (!m_aMousePressHdl.Call(rMEvt))
+            Control::MouseButtonDown(rMEvt);
+    }
+    virtual void MouseButtonUp(const MouseEvent& rMEvt) override
+    {
+        if (!m_aMouseReleaseHdl.Call(rMEvt))
+            Control::MouseButtonUp(rMEvt);
+    }
+    virtual void KeyInput(const KeyEvent& rKEvt) override
+    {
+        if (!m_aKeyPressHdl.Call(rKEvt))
+            Control::KeyInput(rKEvt);
+
+    }
+    virtual void KeyUp(const KeyEvent& rKEvt) override
+    {
+        if (!m_aKeyReleaseHdl.Call(rKEvt))
+            Control::KeyUp(rKEvt);
+    }
+    virtual void StateChanged(StateChangedType nType) override
+    {
+        Control::StateChanged(nType);
+        if (nType == StateChangedType::ControlForeground || nType == StateChangedType::ControlBackground)
+        {
+            m_aStyleUpdatedHdl.Call(*this);
+            Invalidate();
+        }
+    }
+    virtual void DataChanged(const DataChangedEvent& rDCEvt) override
+    {
+        Control::DataChanged(rDCEvt);
+        if ((rDCEvt.GetType() == DataChangedEventType::SETTINGS) && (rDCEvt.GetFlags() & AllSettingsFlags::STYLE))
+        {
+            m_aStyleUpdatedHdl.Call(*this);
+            Invalidate();
+        }
+    }
+    virtual void Command(const CommandEvent& rEvent) override
+    {
+        if (m_aCommandHdl.Call(rEvent))
+            return;
+        Control::Command(rEvent);
+    }
+    virtual void RequestHelp(const HelpEvent& rHelpEvent) override
+    {
+        if (rHelpEvent.GetMode() & (HelpEventMode::QUICK | HelpEventMode::BALLOON))
+        {
+            Point aPos(ScreenToOutputPixel(rHelpEvent.GetMousePosPixel()));
+            tools::Rectangle aHelpArea(aPos.X(), aPos.Y());
+            OUString sHelpTip = m_aQueryTooltipHdl.Call(aHelpArea);
+            if (sHelpTip.isEmpty())
+                return;
+            Point aPt = OutputToScreenPixel(aHelpArea.TopLeft());
+            aHelpArea.SetLeft(aPt.X());
+            aHelpArea.SetTop(aPt.Y());
+            aPt = OutputToScreenPixel(aHelpArea.BottomRight());
+            aHelpArea.SetRight(aPt.X());
+            aHelpArea.SetBottom(aPt.Y());
+            // tdf#125369 recover newline support of tdf#101779
+            QuickHelpFlags eHelpWinStyle = sHelpTip.indexOf('\n') != -1 ? QuickHelpFlags::TipStyleBalloon : QuickHelpFlags::NONE;
+            Help::ShowQuickHelp(this, aHelpArea, sHelpTip, eHelpWinStyle);
+        }
+    }
+    virtual void StartDrag(sal_Int8 nAction, const Point& rPosPixel) override;
+    virtual FactoryFunction GetUITestFactory() const override
+    {
+        if (m_pFactoryFunction)
+            return m_pFactoryFunction;
+        return Control::GetUITestFactory();
+    }
+
+public:
+    VclDrawingArea(vcl::Window *pParent, WinBits nStyle)
+        : Control(pParent, nStyle)
+        , DragSourceHelper(this)
+        , m_pFactoryFunction(nullptr)
+        , m_pUserData(nullptr)
+        , m_nDragAction(0)
+    {
+        SetBackground();
+    }
+    virtual OUString GetSurroundingText() const override;
+    virtual Selection GetSurroundingTextSelection() const override;
+    void SetUITestFactory(FactoryFunction pFactoryFunction, void* pUserData)
+    {
+        m_pFactoryFunction = pFactoryFunction;
+        m_pUserData = pUserData;
+    }
+    void* GetUserData() const
+    {
+        return m_pUserData;
+    }
+    void SetPaintHdl(const Link<std::pair<vcl::RenderContext&, const tools::Rectangle&>, void>& rLink)
+    {
+        m_aPaintHdl = rLink;
+    }
+    void SetResizeHdl(const Link<const Size&, void>& rLink)
+    {
+        m_aResizeHdl = rLink;
+    }
+    void SetMousePressHdl(const Link<const MouseEvent&, bool>& rLink)
+    {
+        m_aMousePressHdl = rLink;
+    }
+    void SetMouseMoveHdl(const Link<const MouseEvent&, bool>& rLink)
+    {
+        m_aMouseMotionHdl = rLink;
+    }
+    void SetMouseReleaseHdl(const Link<const MouseEvent&, bool>& rLink)
+    {
+        m_aMouseReleaseHdl = rLink;
+    }
+    void SetKeyPressHdl(const Link<const KeyEvent&, bool>& rLink)
+    {
+        m_aKeyPressHdl = rLink;
+    }
+    void SetKeyReleaseHdl(const Link<const KeyEvent&, bool>& rLink)
+    {
+        m_aKeyReleaseHdl = rLink;
+    }
+    void SetStyleUpdatedHdl(const Link<VclDrawingArea&, void>& rLink)
+    {
+        m_aStyleUpdatedHdl = rLink;
+    }
+    void SetCommandHdl(const Link<const CommandEvent&, bool>& rLink)
+    {
+        m_aCommandHdl = rLink;
+    }
+    void SetQueryTooltipHdl(const Link<tools::Rectangle&, OUString>& rLink)
+    {
+        m_aQueryTooltipHdl = rLink;
+    }
+    void SetGetSurroundingHdl(const Link<OUString&, int>& rLink)
+    {
+        m_aGetSurroundingHdl = rLink;
+    }
+    void SetStartDragHdl(const Link<VclDrawingArea*, bool>& rLink)
+    {
+        m_aStartDragHdl = rLink;
+    }
+    void SetDragHelper(rtl::Reference<TransferDataContainer>& rHelper, sal_uInt8 eDNDConstants)
+    {
+        m_xTransferHelper = rHelper;
+        m_nDragAction = eDNDConstants;
+    }
+};
+
+//Get first window of a pTopLevel window as
+//if any intermediate layout widgets didn't exist
+//i.e. acts like pChild = pChild->GetWindow(GetWindowType::FirstChild);
+//in a flat hierarchy where dialogs only have one layer
+//of children
+vcl::Window* firstLogicalChildOfParent(const vcl::Window *pTopLevel);
+
+//Get last window of a pTopLevel window as
+//if any intermediate layout widgets didn't exist
+//i.e. acts like pChild = pChild->GetWindow(GetWindowType::LastChild);
+//in a flat hierarchy where dialogs only have one layer
+//of children
+vcl::Window* lastLogicalChildOfParent(const vcl::Window *pTopLevel);
+
+//Get next window after pChild of a pTopLevel window as
+//if any intermediate layout widgets didn't exist
+//i.e. acts like pChild = pChild->GetWindow(GetWindowType::Next);
+//in a flat hierarchy where dialogs only have one layer
+//of children
+vcl::Window* nextLogicalChildOfParent(const vcl::Window *pTopLevel, const vcl::Window *pChild);
+
+//Get previous window before pChild of a pTopLevel window as
+//if any intermediate layout widgets didn't exist
+//i.e. acts like pChild = pChild->GetWindow(GetWindowType::Prev);
+//in a flat hierarchy where dialogs only have one layer
+//of children
+vcl::Window* prevLogicalChildOfParent(const vcl::Window *pTopLevel, const vcl::Window *pChild);
+
+//Returns true is the Window has a single child which is a container
+VCL_DLLPUBLIC bool isLayoutEnabled(const vcl::Window *pWindow);
+
+inline bool isContainerWindow(const vcl::Window &rWindow)
+{
+    WindowType eType = rWindow.GetType();
+    return eType == WindowType::CONTAINER || eType == WindowType::SCROLLWINDOW ||
+           (eType == WindowType::DOCKINGWINDOW && ::isLayoutEnabled(&rWindow));
+}
+
+inline bool isContainerWindow(const vcl::Window *pWindow)
+{
+    return pWindow && isContainerWindow(*pWindow);
+}
+
+// retro-fitting utilities
+
+//Get a Size which is large enough to contain all children with
+//an equal amount of space at top left and bottom right
+Size getLegacyBestSizeForChildren(const vcl::Window &rWindow);
+
+//Get first parent which is not a layout widget
+vcl::Window* getNonLayoutParent(vcl::Window *pParent);
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */