/* -*- 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 <vcl/event.hxx>

#include <vcl/rendercontext/SystemTextColorFlags.hxx>

#include <vcl/toolkit/spin.hxx>

#include <vcl/salnativewidgets.hxx>

#include <vcl/settings.hxx>

#include <vcl/vclevent.hxx>

#include <spin.hxx>

SpinButton::SpinButton( vcl::Window* pParent, WinBits nStyle )

    : Control(WindowType::SPINBUTTON)

    , maRepeatTimer("SpinButton maRepeatTimer")

    , mbUpperIsFocused(false)

{

    mbUpperIn     = false;

    mbLowerIn     = false;

    mbInitialUp   = false;

    mbInitialDown = false;

    mnMinRange  = 0;

    mnMaxRange  = 100;

    mnValue     = 0;

    mnValueStep = 1;

    maRepeatTimer.SetTimeout(MouseSettings::GetButtonStartRepeat());

    maRepeatTimer.SetInvokeHandler(LINK(this, SpinButton, ImplTimeout));

    mbRepeat = 0 != (nStyle & WB_REPEAT);

    if (nStyle & WB_HSCROLL)

        mbHorz = true;

    else

        mbHorz = false;

    Control::ImplInit( pParent, nStyle, nullptr );

}

Unexecuted instantiation: SpinButton::SpinButton(vcl::Window*, long)

Unexecuted instantiation: SpinButton::SpinButton(vcl::Window*, long)

IMPL_LINK(SpinButton, ImplTimeout, Timer*, pTimer, void)

{

    if (pTimer->GetTimeout() == static_cast<sal_uInt64>(MouseSettings::GetButtonStartRepeat()))

    {

        pTimer->SetTimeout( GetSettings().GetMouseSettings().GetButtonRepeat() );

        pTimer->Start();

    }

    else

    {

        if (mbInitialUp)

            Up();

        else

            Down();

    }

}

void SpinButton::Up()

{

    if (ImplIsUpperEnabled())

    {

        mnValue += mnValueStep;

        CompatStateChanged(StateChangedType::Data);

        ImplMoveFocus(true);

    }

    ImplCallEventListenersAndHandler(VclEventId::SpinbuttonUp, nullptr );

}

void SpinButton::Down()

{

    if (ImplIsLowerEnabled())

    {

        mnValue -= mnValueStep;

        CompatStateChanged(StateChangedType::Data);

        ImplMoveFocus(false);

    }

    ImplCallEventListenersAndHandler(VclEventId::SpinbuttonDown, nullptr );

}

void SpinButton::Resize()

{

    Control::Resize();

    Size aSize(GetOutputSizePixel());

    tools::Rectangle aRect(Point(), aSize);

    if (mbHorz)

    {

        maLowerRect = tools::Rectangle(0, 0, aSize.Width() / 2, aSize.Height() - 1);

        maUpperRect = tools::Rectangle(maLowerRect.TopRight(), aRect.BottomRight());

    }

    else

    {

        maUpperRect = tools::Rectangle(0, 0, aSize.Width() - 1, aSize.Height() / 2);

        maLowerRect = tools::Rectangle(maUpperRect.BottomLeft(), aRect.BottomRight());

    }

    ImplCalcFocusRect(ImplIsUpperEnabled() || !ImplIsLowerEnabled());

    Invalidate();

}

void SpinButton::Draw(OutputDevice* pDev, const Point& rPos, SystemTextColorFlags nFlags)

{

    Point aPos  = pDev->LogicToPixel(rPos);

    Size aSize = GetSizePixel();

    auto popIt = pDev->ScopedPush();

    pDev->SetMapMode();

    if ( !(nFlags & SystemTextColorFlags::Mono) )

    {

        // DecoView uses the FaceColor...

        AllSettings aSettings = pDev->GetSettings();

        StyleSettings aStyleSettings = aSettings.GetStyleSettings();

        if ( IsControlBackground() )

            aStyleSettings.SetFaceColor( GetControlBackground() );

        else

            aStyleSettings.SetFaceColor( GetSettings().GetStyleSettings().GetFaceColor() );

        aSettings.SetStyleSettings( aStyleSettings );

        pDev->SetSettings( aSettings );

    }

    tools::Rectangle   aRect( Point( 0, 0 ), aSize );

    tools::Rectangle aLowerRect, aUpperRect;

    if ( mbHorz )

    {

        aLowerRect = tools::Rectangle( 0, 0, aSize.Width()/2, aSize.Height()-1 );

        aUpperRect = tools::Rectangle( aLowerRect.TopRight(), aRect.BottomRight() );

    }

    else

    {

        aUpperRect = tools::Rectangle( 0, 0, aSize.Width()-1, aSize.Height()/2 );

        aLowerRect = tools::Rectangle( aUpperRect.BottomLeft(), aRect.BottomRight() );

    }

    aUpperRect += aPos;

    aLowerRect += aPos;

    ImplDrawSpinButton(*pDev, this, aUpperRect, aLowerRect, false, false,

                       IsEnabled() && ImplIsUpperEnabled(),

                       IsEnabled() && ImplIsLowerEnabled(), mbHorz, true);

}

void SpinButton::Paint(vcl::RenderContext& rRenderContext, const tools::Rectangle& /*rRect*/)

{

    HideFocus();

    bool bEnable = IsEnabled();

    ImplDrawSpinButton(rRenderContext, this, maUpperRect, maLowerRect, mbUpperIn, mbLowerIn,

                       bEnable && ImplIsUpperEnabled(),

                       bEnable && ImplIsLowerEnabled(), mbHorz, true);

    if (HasFocus())

        ShowFocus(maFocusRect);

}

void SpinButton::MouseButtonDown( const MouseEvent& rMEvt )

{

    if ( maUpperRect.Contains( rMEvt.GetPosPixel() ) && ( ImplIsUpperEnabled() ) )

    {

        mbUpperIn   = true;

        mbInitialUp = true;

        Invalidate( maUpperRect );

    }

    else if ( maLowerRect.Contains( rMEvt.GetPosPixel() ) && ( ImplIsLowerEnabled() ) )

    {

        mbLowerIn     = true;

        mbInitialDown = true;

        Invalidate( maLowerRect );

    }

    if ( mbUpperIn || mbLowerIn )

    {

        CaptureMouse();

        if ( mbRepeat )

            maRepeatTimer.Start();

    }

}

void SpinButton::MouseButtonUp( const MouseEvent& )

{

    ReleaseMouse();

    if ( mbRepeat )

    {

        maRepeatTimer.Stop();

        maRepeatTimer.SetTimeout(MouseSettings::GetButtonStartRepeat() );

    }

    if ( mbUpperIn )

    {

        mbUpperIn   = false;

        Invalidate( maUpperRect );

        Up();

    }

    else if ( mbLowerIn )

    {

        mbLowerIn = false;

        Invalidate( maLowerRect );

        Down();

    }

    mbInitialUp = mbInitialDown = false;

}

void SpinButton::MouseMove( const MouseEvent& rMEvt )

{

    if ( !rMEvt.IsLeft() || (!mbInitialUp && !mbInitialDown) )

        return;

    if ( !maUpperRect.Contains( rMEvt.GetPosPixel() ) &&

         mbUpperIn && mbInitialUp )

    {

        mbUpperIn = false;

        maRepeatTimer.Stop();

        Invalidate( maUpperRect );

    }

    else if ( !maLowerRect.Contains( rMEvt.GetPosPixel() ) &&

              mbLowerIn && mbInitialDown )

    {

        mbLowerIn = false;

        maRepeatTimer.Stop();

        Invalidate( maLowerRect );

    }

    else if ( maUpperRect.Contains( rMEvt.GetPosPixel() ) &&

              !mbUpperIn && mbInitialUp )

    {

        mbUpperIn = true;

        if ( mbRepeat )

            maRepeatTimer.Start();

        Invalidate( maUpperRect );

    }

    else if ( maLowerRect.Contains( rMEvt.GetPosPixel() ) &&

              !mbLowerIn && mbInitialDown )

    {

        mbLowerIn = true;

        if ( mbRepeat )

            maRepeatTimer.Start();

        Invalidate( maLowerRect );

    }

}

void SpinButton::KeyInput( const KeyEvent& rKEvt )

{

    if ( !rKEvt.GetKeyCode().GetModifier() )

    {

        switch ( rKEvt.GetKeyCode().GetCode() )

        {

        case KEY_LEFT:

        case KEY_RIGHT:

        {

            bool bUp = KEY_RIGHT == rKEvt.GetKeyCode().GetCode();

            if ( mbHorz && !ImplMoveFocus( bUp ) )

                bUp ? Up() : Down();

        }

        break;

        case KEY_UP:

        case KEY_DOWN:

        {

            bool bUp = KEY_UP == rKEvt.GetKeyCode().GetCode();

            if ( !mbHorz && !ImplMoveFocus( KEY_UP == rKEvt.GetKeyCode().GetCode() ) )

                bUp ? Up() : Down();

        }

        break;

        case KEY_SPACE:

            mbUpperIsFocused ? Up() : Down();

            break;

        default:

            Control::KeyInput( rKEvt );

            break;

        }

    }

    else

        Control::KeyInput( rKEvt );

}

void SpinButton::StateChanged( StateChangedType nType )

{

    switch ( nType )

    {

    case StateChangedType::Data:

    case StateChangedType::Enable:

        Invalidate();

        break;

    case StateChangedType::Style:

    {

        bool bNewRepeat = 0 != ( GetStyle() & WB_REPEAT );

        if ( bNewRepeat != mbRepeat )

        {

            if ( maRepeatTimer.IsActive() )

            {

                maRepeatTimer.Stop();

                maRepeatTimer.SetTimeout( MouseSettings::GetButtonStartRepeat() );

            }

            mbRepeat = bNewRepeat;

        }

        bool bNewHorz = 0 != ( GetStyle() & WB_HSCROLL );

        if ( bNewHorz != mbHorz )

        {

            mbHorz = bNewHorz;

            Resize();

        }

    }

    break;

    default:;

    }

    Control::StateChanged( nType );

}

void SpinButton::SetRangeMin( tools::Long nNewRange )

{

    SetRange( Range( nNewRange, GetRangeMax() ) );

}

void SpinButton::SetRangeMax( tools::Long nNewRange )

{

    SetRange( Range( GetRangeMin(), nNewRange ) );

}

void SpinButton::SetRange( const Range& rRange )

{

    // adjust rage

    Range aRange = rRange;

    aRange.Normalize();

    tools::Long nNewMinRange = aRange.Min();

    tools::Long nNewMaxRange = aRange.Max();

    // do something only if old and new range differ

    if ( (mnMinRange == nNewMinRange) && (mnMaxRange == nNewMaxRange))

        return;

    mnMinRange = nNewMinRange;

    mnMaxRange = nNewMaxRange;

    // adjust value to new range, if necessary

    if ( mnValue > mnMaxRange )

        mnValue = mnMaxRange;

    if ( mnValue < mnMinRange )

        mnValue = mnMinRange;

    CompatStateChanged( StateChangedType::Data );

}

void SpinButton::SetValue( tools::Long nValue )

{

    // adjust, if necessary

    if ( nValue > mnMaxRange )

        nValue = mnMaxRange;

    if ( nValue < mnMinRange )

        nValue = mnMinRange;

    if ( mnValue != nValue )

    {

        mnValue = nValue;

        CompatStateChanged( StateChangedType::Data );

    }

}

void SpinButton::GetFocus()

{

    ShowFocus( maFocusRect );

    Control::GetFocus();

}

void SpinButton::LoseFocus()

{

    HideFocus();

    Control::LoseFocus();

}

bool SpinButton::ImplMoveFocus( bool _bUpper )

{

    if ( _bUpper == mbUpperIsFocused )

        return false;

    HideFocus();

    ImplCalcFocusRect( _bUpper );

    if ( HasFocus() )

        ShowFocus( maFocusRect );

    return true;

}

void SpinButton::ImplCalcFocusRect( bool _bUpper )

{

    maFocusRect = _bUpper ? maUpperRect : maLowerRect;

    // inflate by some pixels

    maFocusRect.AdjustLeft(2 );

    maFocusRect.AdjustTop(2 );

    maFocusRect.AdjustRight( -2 );

    maFocusRect.AdjustBottom( -2 );

    mbUpperIsFocused = _bUpper;

}

tools::Rectangle* SpinButton::ImplFindPartRect(const Point& rPt)

{

    if (maUpperRect.Contains(rPt))

        return &maUpperRect;

    if (maLowerRect.Contains(rPt))

        return &maLowerRect;

    return nullptr;

}

bool SpinButton::PreNotify( NotifyEvent& rNEvt )

{

    if (rNEvt.GetType() == NotifyEventType::MOUSEMOVE)

    {

        const MouseEvent* pMouseEvt = rNEvt.GetMouseEvent();

        if (pMouseEvt && !pMouseEvt->GetButtons() && !pMouseEvt->IsSynthetic() && !pMouseEvt->IsModifierChanged())

        {

            // trigger redraw if mouse over state has changed

            if (IsNativeControlSupported(ControlType::Spinbox, ControlPart::Entire) ||

                IsNativeControlSupported(ControlType::Spinbox, ControlPart::AllButtons) )

            {

                tools::Rectangle* pRect = ImplFindPartRect( GetPointerPosPixel() );

                tools::Rectangle* pLastRect = ImplFindPartRect( GetLastPointerPosPixel() );

                if (pRect != pLastRect || (pMouseEvt->IsLeaveWindow() || pMouseEvt->IsEnterWindow()))

                {

                    vcl::Region aRgn(GetOutDev()->GetActiveClipRegion());

                    if (pLastRect)

                    {

                        GetOutDev()->SetClipRegion(vcl::Region(*pLastRect));

                        Invalidate(*pLastRect);

                        GetOutDev()->SetClipRegion( aRgn );

                    }

                    if (pRect)

                    {

                        GetOutDev()->SetClipRegion(vcl::Region(*pRect));

                        Invalidate(*pRect);

                        GetOutDev()->SetClipRegion(aRgn);

                    }

                }

            }

        }

    }

    return Control::PreNotify(rNEvt);

}

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */