// Copyright 2014 PDFium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com


#include "../../include/formfiller/FFL_FormFiller.h"
#include "../../include/formfiller/FFL_Notify.h"
#include "../../include/formfiller/FFL_CBA_Fontmap.h"

#define GetRed(rgb)         ((uint8_t)(rgb))
#define GetGreen(rgb)       ((uint8_t)(((FX_WORD)(rgb)) >> 8))
#define GetBlue(rgb)        ((uint8_t)((rgb)>>16))

#define FFL_HINT_ELAPSE     800

/* ------------------------- CFFL_FormFiller ------------------------- */

CFFL_FormFiller::CFFL_FormFiller(CPDFDoc_Environment* pApp, CPDFSDK_Annot* pAnnot)
    : m_pApp(pApp),
      m_pAnnot(pAnnot),
      m_bValid(false),
      m_ptOldPos(0,0)
{
    m_pWidget = (CPDFSDK_Widget*) pAnnot;
}

CFFL_FormFiller::~CFFL_FormFiller()
{
    for (auto& it : m_Maps) {
        CPWL_Wnd* pWnd = it.second;
        CFFL_PrivateData* pData = (CFFL_PrivateData*)pWnd->GetAttachedData();
        pWnd->Destroy();
        delete pWnd;
        delete pData;
    }
    m_Maps.clear();
}

void CFFL_FormFiller::SetWindowRect(CPDFSDK_PageView* pPageView, const CPDF_Rect& rcWindow)
{
    if (CPWL_Wnd* pWnd = GetPDFWindow(pPageView, false))
    {
        pWnd->Move(CPDF_Rect(rcWindow), true, false);
    }
}

CPDF_Rect CFFL_FormFiller::GetWindowRect(CPDFSDK_PageView* pPageView)
{
    if (CPWL_Wnd* pWnd = GetPDFWindow(pPageView, false))
    {
        return pWnd->GetWindowRect();
    }

    return CPDF_Rect(0,0,0,0);
}

FX_RECT CFFL_FormFiller::GetViewBBox(CPDFSDK_PageView *pPageView, CPDFSDK_Annot* pAnnot)
{
    ASSERT(pPageView != NULL);
    ASSERT(pAnnot != NULL);

    CPDF_Rect rcAnnot = m_pWidget->GetRect();

    if (CPWL_Wnd* pWnd = GetPDFWindow(pPageView, false))
    {
        CPDF_Rect rcWindow = pWnd->GetWindowRect();
        rcAnnot = PWLtoFFL(rcWindow);
    }

    CPDF_Rect rcWin = rcAnnot;

    CPDF_Rect rcFocus = GetFocusBox(pPageView);
    if (!rcFocus.IsEmpty())
        rcWin.Union(rcFocus);

    CPDF_Rect rect = CPWL_Utils::InflateRect(rcWin,1);

    return rect.GetOutterRect();
}

void CFFL_FormFiller::OnDraw(CPDFSDK_PageView *pPageView, CPDFSDK_Annot* pAnnot,
                             CFX_RenderDevice* pDevice, CPDF_Matrix* pUser2Device,
                             FX_DWORD dwFlags)
{
    ASSERT(pAnnot->GetPDFAnnot()->GetSubType() == "Widget");

    if (CPWL_Wnd * pWnd = GetPDFWindow(pPageView, false))
    {
        CPDF_Matrix mt = GetCurMatrix();
        mt.Concat(*pUser2Device);
        pWnd->DrawAppearance(pDevice,&mt);
    }
    else
    {
        CPDFSDK_Widget* pWidget = (CPDFSDK_Widget*)pAnnot;
        if (CFFL_IFormFiller::IsVisible(pWidget))
            pWidget->DrawAppearance(pDevice, pUser2Device, CPDF_Annot::Normal, NULL);
    }
}

void CFFL_FormFiller::OnDrawDeactive(CPDFSDK_PageView *pPageView, CPDFSDK_Annot* pAnnot,
                                     CFX_RenderDevice* pDevice, CPDF_Matrix* pUser2Device,
                                     FX_DWORD dwFlags)
{
    CPDFSDK_Widget* pWidget = (CPDFSDK_Widget*)pAnnot;
    pWidget->DrawAppearance(pDevice, pUser2Device, CPDF_Annot::Normal, NULL);
}


void CFFL_FormFiller::OnCreate(CPDFSDK_Annot* pAnnot)
{
}

void CFFL_FormFiller::OnLoad(CPDFSDK_Annot* pAnnot)
{
}

void CFFL_FormFiller::OnDelete(CPDFSDK_Annot* pAnnot)
{
}

void CFFL_FormFiller::OnMouseEnter(CPDFSDK_PageView *pPageView, CPDFSDK_Annot* pAnnot)
{
}

void CFFL_FormFiller::OnMouseExit(CPDFSDK_PageView *pPageView, CPDFSDK_Annot* pAnnot)
{
    EndTimer();
    ASSERT(m_pWidget != NULL);
}

bool CFFL_FormFiller::OnLButtonDown(CPDFSDK_PageView *pPageView, CPDFSDK_Annot* pAnnot, FX_UINT nFlags, const CPDF_Point& point)
{
    if (CPWL_Wnd * pWnd = GetPDFWindow(pPageView, true))
    {
        m_bValid = true;
        FX_RECT rect = GetViewBBox(pPageView,pAnnot);
        InvalidateRect(rect.left, rect.top, rect.right, rect.bottom);

        if(!rect.Contains((int)point.x, (int)point.y))
            return false;

        return pWnd->OnLButtonDown(WndtoPWL(pPageView, point),nFlags);
    }

    return false;
}

bool CFFL_FormFiller::OnLButtonUp(CPDFSDK_PageView *pPageView, CPDFSDK_Annot* pAnnot, FX_UINT nFlags, const CPDF_Point& point)
{
    if (CPWL_Wnd * pWnd = GetPDFWindow(pPageView, false))
    {
        FX_RECT rcFFL = GetViewBBox(pPageView, pAnnot);
        InvalidateRect(rcFFL.left, rcFFL.top, rcFFL.right, rcFFL.bottom);
        pWnd->OnLButtonUp(WndtoPWL(pPageView, point),nFlags);
        return true;
    }

    return false;
}

bool CFFL_FormFiller::OnLButtonDblClk(CPDFSDK_PageView *pPageView, CPDFSDK_Annot* pAnnot, FX_UINT nFlags, const CPDF_Point& point)
{
    if (CPWL_Wnd * pWnd = GetPDFWindow(pPageView, false))
    {
        pWnd->OnLButtonDblClk(WndtoPWL(pPageView, point),nFlags);
        return true;
    }

    return false;
}

bool CFFL_FormFiller::OnMouseMove(CPDFSDK_PageView *pPageView, CPDFSDK_Annot* pAnnot, FX_UINT nFlags, const CPDF_Point& point)
{
    if ((m_ptOldPos.x != point.x) || (m_ptOldPos.y != point.y))
    {
        m_ptOldPos = point;
    }

    if (CPWL_Wnd * pWnd = GetPDFWindow(pPageView, false))
    {
        pWnd->OnMouseMove(WndtoPWL(pPageView, point),nFlags);
        return true;
    }

    return false;
}

bool CFFL_FormFiller::OnMouseWheel(CPDFSDK_PageView *pPageView, CPDFSDK_Annot* pAnnot, FX_UINT nFlags, short zDelta, const CPDF_Point& point)
{
    if (!IsValid()) return false;

    if (CPWL_Wnd * pWnd = GetPDFWindow(pPageView, true))
    {
        return pWnd->OnMouseWheel(zDelta, WndtoPWL(pPageView, point),nFlags);
    }

    return false;
}

bool CFFL_FormFiller::OnRButtonDown(CPDFSDK_PageView *pPageView, CPDFSDK_Annot* pAnnot, FX_UINT nFlags, const CPDF_Point& point)
{
    if (CPWL_Wnd * pWnd = GetPDFWindow(pPageView, true))
    {
        pWnd->OnRButtonDown(WndtoPWL(pPageView, point),nFlags);
        return true;
    }

    return false;
}

bool CFFL_FormFiller::OnRButtonUp(CPDFSDK_PageView *pPageView, CPDFSDK_Annot* pAnnot, FX_UINT nFlags, const CPDF_Point& point)
{
    if (CPWL_Wnd * pWnd = GetPDFWindow(pPageView, false))
    {
        pWnd->OnRButtonUp(WndtoPWL(pPageView, point),nFlags);
        return true;
    }

    return false;
}

bool CFFL_FormFiller::OnKeyDown(CPDFSDK_Annot* pAnnot, FX_UINT nKeyCode, FX_UINT nFlags)
{
    if (IsValid())
    {
        CPDFSDK_PageView* pPageView = GetCurPageView();
        ASSERT(pPageView != NULL);

        if (CPWL_Wnd * pWnd = GetPDFWindow(pPageView, false))
        {
            return pWnd->OnKeyDown(nKeyCode,nFlags);
        }
    }

    return false;
}

bool CFFL_FormFiller::OnChar(CPDFSDK_Annot* pAnnot, FX_UINT nChar, FX_UINT nFlags)
{
    if (IsValid())
    {
        CPDFSDK_PageView* pPageView = GetCurPageView();
        ASSERT(pPageView != NULL);

        if (CPWL_Wnd * pWnd = GetPDFWindow(pPageView, false))
        {
            return pWnd->OnChar(nChar,nFlags);
        }
    }

    return false;
}

bool CFFL_FormFiller::OnSetFocus(CPDFSDK_Annot* pAnnot, FX_UINT nFlag)
{
    CPDFSDK_Widget* pWidget = (CPDFSDK_Widget*)pAnnot;
    CPDF_Page* pPage = pWidget->GetPDFPage();
    CPDFSDK_Document* pDoc = m_pApp->GetSDKDocument();
    CPDFSDK_PageView* pPageView = pDoc->GetPageView(pPage);
    if (CPWL_Wnd* pWnd = GetPDFWindow(pPageView, true))
        pWnd->SetFocus();

    m_bValid = true;
    FX_RECT rcRect = GetViewBBox(pPageView,pAnnot);
    InvalidateRect(rcRect.left, rcRect.top, rcRect.right, rcRect.bottom);
    return true;
}

bool CFFL_FormFiller::OnKillFocus(CPDFSDK_Annot* pAnnot, FX_UINT nFlag)
{
    if (!IsValid())
        return true;

    CPDFSDK_PageView* pPageView = GetCurPageView();
    CommitData(pPageView, nFlag);

    if (CPWL_Wnd* pWnd = GetPDFWindow(pPageView, false))
        pWnd->KillFocus();

    switch (m_pWidget->GetFieldType())
    {
    case FIELDTYPE_PUSHBUTTON:
    case FIELDTYPE_CHECKBOX:
    case FIELDTYPE_RADIOBUTTON:
        EscapeFiller(pPageView, true);
        break;
    default:
        EscapeFiller(pPageView, false);
        break;
    }
    return true;
}

bool CFFL_FormFiller::IsValid() const
{
    return m_bValid;
}

PWL_CREATEPARAM CFFL_FormFiller::GetCreateParam()
{
    ASSERT(m_pApp != NULL);

    PWL_CREATEPARAM cp;
    cp.pParentWnd = NULL;
    cp.pProvider = this;
    cp.rcRectWnd = GetPDFWindowRect();

    FX_DWORD dwCreateFlags = PWS_BORDER | PWS_BACKGROUND | PWS_VISIBLE;
    FX_DWORD dwFieldFlag = m_pWidget->GetFieldFlags();
    if (dwFieldFlag & FIELDFLAG_READONLY)
    {
        dwCreateFlags |= PWS_READONLY;
    }

    FX_COLORREF color;
    if (m_pWidget->GetFillColor(color))
    {
        cp.sBackgroundColor = CPWL_Color(GetRed(color), GetGreen(color), GetBlue(color));
    }

    if (m_pWidget->GetBorderColor(color))
    {
        cp.sBorderColor = CPWL_Color(GetRed(color), GetGreen(color), GetBlue(color));
    }

    cp.sTextColor = CPWL_Color(COLORTYPE_GRAY,0);

    if (m_pWidget->GetTextColor(color))
    {
        cp.sTextColor = CPWL_Color(GetRed(color), GetGreen(color), GetBlue(color));
    }

    cp.fFontSize = m_pWidget->GetFontSize();
    cp.dwBorderWidth = m_pWidget->GetBorderWidth();

    int nBorderStyle = m_pWidget->GetBorderStyle();

    switch (nBorderStyle)
    {
    case BBS_SOLID:
        cp.nBorderStyle = PBS_SOLID;
        break;
    case BBS_DASH:
        cp.nBorderStyle = PBS_DASH;
        cp.sDash = CPWL_Dash(3,3,0);
        break;
    case BBS_BEVELED:
        cp.nBorderStyle = PBS_BEVELED;
        cp.dwBorderWidth *= 2;
        break;
    case BBS_INSET:
        cp.nBorderStyle = PBS_INSET;
        cp.dwBorderWidth *= 2;
        break;
    case BBS_UNDERLINE:
        cp.nBorderStyle = PBS_UNDERLINED;
        break;
    }

    if (cp.fFontSize <= 0)
    {
        dwCreateFlags |= PWS_AUTOFONTSIZE;
    }

    cp.dwFlags = dwCreateFlags;
    cp.pSystemHandler = m_pApp->GetSysHandler();
    return cp;
}

CPWL_Wnd* CFFL_FormFiller::GetPDFWindow(CPDFSDK_PageView* pPageView, bool bNew)
{
    ASSERT(pPageView);

    auto it = m_Maps.find(pPageView);
    const bool found = it != m_Maps.end();
    CPWL_Wnd* pWnd = found ? it->second : nullptr;
    if (!bNew)
        return pWnd;

    if (found) {
        CFFL_PrivateData* pPrivateData =
            (CFFL_PrivateData*)pWnd->GetAttachedData();
        if (pPrivateData->nWidgetAge != m_pWidget->GetAppearanceAge()) {
            return ResetPDFWindow(
                pPageView, m_pWidget->GetValueAge() == pPrivateData->nValueAge);
      }
    } else {
      PWL_CREATEPARAM cp = GetCreateParam();
      cp.hAttachedWnd = (FX_HWND)m_pWidget;

      CFFL_PrivateData* pPrivateData = new CFFL_PrivateData;
      pPrivateData->pWidget = m_pWidget;
      pPrivateData->pPageView = pPageView;
      pPrivateData->nWidgetAge = m_pWidget->GetAppearanceAge();
      pPrivateData->nValueAge = 0;

      cp.pAttachedData = pPrivateData;

      pWnd = NewPDFWindow(cp, pPageView);
      m_Maps[pPageView] = pWnd;
    }

    return pWnd;
}

void CFFL_FormFiller::DestroyPDFWindow(CPDFSDK_PageView* pPageView)
{
    auto it = m_Maps.find(pPageView);
    if (it == m_Maps.end())
        return;

    CPWL_Wnd* pWnd = it->second;
    CFFL_PrivateData* pData = (CFFL_PrivateData*)pWnd->GetAttachedData();
    pWnd->Destroy();
    delete pWnd;
    delete pData;

    m_Maps.erase(it);
}

CPDF_Matrix CFFL_FormFiller::GetWindowMatrix(void* pAttachedData)
{
    if (CFFL_PrivateData* pPrivateData = (CFFL_PrivateData*)pAttachedData)
    {
        if (pPrivateData->pPageView)
        {
            CPDF_Matrix mtPageView;
            pPrivateData->pPageView->GetCurrentMatrix(mtPageView);
            CPDF_Matrix mt = GetCurMatrix();
            mt.Concat(mtPageView);

            return mt;
        }
    }
    return CPDF_Matrix(1,0,0,1,0,0);
}

CPDF_Matrix CFFL_FormFiller::GetCurMatrix()
{
    CPDF_Matrix mt;

    ASSERT(m_pWidget != NULL);

    CPDF_Rect rcDA ;
    m_pWidget->GetPDFAnnot()->GetRect(rcDA);


    switch (m_pWidget->GetRotate())
    {
    default:
    case 0:
        mt = CPDF_Matrix(1,0,0,1,0,0);
        break;
    case 90:
        mt = CPDF_Matrix(0,1,-1,0,rcDA.right - rcDA.left,0);
        break;
    case 180:
        mt = CPDF_Matrix(-1,0,0,-1,rcDA.right - rcDA.left,rcDA.top - rcDA.bottom);
        break;
    case 270:
        mt = CPDF_Matrix(0,-1,1,0,0,rcDA.top - rcDA.bottom);
        break;
    }
    mt.e += rcDA.left;
    mt.f += rcDA.bottom;

    return mt;
}

CFX_WideString CFFL_FormFiller::LoadPopupMenuString(int nIndex)
{
    ASSERT(m_pApp != NULL);

    return L"";
}

CPDF_Rect CFFL_FormFiller::GetPDFWindowRect() const
{
    CPDF_Rect rectAnnot;
    m_pWidget->GetPDFAnnot()->GetRect(rectAnnot);

    FX_FLOAT fWidth = rectAnnot.right - rectAnnot.left;
    FX_FLOAT fHeight = rectAnnot.top - rectAnnot.bottom;
    if ((m_pWidget->GetRotate() / 90) & 0x01)
        return CPDF_Rect(0, 0, fHeight, fWidth);

    return CPDF_Rect(0, 0, fWidth, fHeight);
}

CPDFSDK_PageView* CFFL_FormFiller::GetCurPageView()
{
    CPDF_Page* pPage = m_pAnnot->GetPDFPage();
    CPDFSDK_Document* pSDKDoc = m_pApp->GetSDKDocument();
    return pSDKDoc ? pSDKDoc->GetPageView(pPage) : nullptr;
}

CPDF_Rect CFFL_FormFiller::GetFocusBox(CPDFSDK_PageView* pPageView)
{
    if (CPWL_Wnd* pWnd = GetPDFWindow(pPageView, false))
    {
        CPDF_Rect rcFocus = FFLtoWnd(pPageView, PWLtoFFL(pWnd->GetFocusRect()));
        CPDF_Rect rcPage = pPageView->GetPDFPage()->GetPageBBox();
        if (rcPage.Contains(rcFocus))
            return rcFocus;
    }
    return CPDF_Rect(0,0,0,0);
}

CPDF_Rect CFFL_FormFiller::FFLtoPWL(const CPDF_Rect& rect)
{
    CPDF_Matrix mt;
    mt.SetReverse(GetCurMatrix());

    CPDF_Rect temp = rect;
    mt.TransformRect(temp);

    return temp;
}

CPDF_Rect CFFL_FormFiller::PWLtoFFL(const CPDF_Rect& rect)
{
    CPDF_Matrix mt = GetCurMatrix();

    CPDF_Rect temp = rect;
    mt.TransformRect(temp);

    return temp;
}

CPDF_Point CFFL_FormFiller::FFLtoPWL(const CPDF_Point& point)
{
    CPDF_Matrix mt;
    mt.SetReverse(GetCurMatrix());

    CPDF_Point pt = point;
    mt.Transform(pt.x,pt.y);

    return pt;
}

CPDF_Point CFFL_FormFiller::PWLtoFFL(const CPDF_Point & point)
{
    CPDF_Matrix mt = GetCurMatrix();

    CPDF_Point pt = point;
    mt.Transform(pt.x,pt.y);

    return pt;
}

CPDF_Point CFFL_FormFiller::WndtoPWL(CPDFSDK_PageView* pPageView, const CPDF_Point& pt)
{
    return FFLtoPWL(pt);
}

CPDF_Rect CFFL_FormFiller::FFLtoWnd(CPDFSDK_PageView* pPageView, const CPDF_Rect & rect)
{
    return rect;
}

bool CFFL_FormFiller::CommitData(CPDFSDK_PageView* pPageView, FX_UINT nFlag)
{
    if (IsDataChanged(pPageView))
    {
        bool bRC = true;
        bool bExit = false;
        CFFL_IFormFiller* pIFormFiller = m_pApp->GetIFormFiller();
        pIFormFiller->OnKeyStrokeCommit(m_pWidget, pPageView, bRC, bExit, nFlag);
        if (bExit)
            return true;
        if (!bRC)
        {
            ResetPDFWindow(pPageView, false);
            return true;
        }

        pIFormFiller->OnValidate(m_pWidget, pPageView, bRC, bExit, nFlag);
        if (bExit)
            return true;
        if (!bRC)
        {
            ResetPDFWindow(pPageView, false);
            return true;
        }

        SaveData(pPageView);
        pIFormFiller->OnCalculate(m_pWidget, pPageView, bExit,nFlag);
        if (bExit)
            return true;

        pIFormFiller->OnFormat(m_pWidget, pPageView, bExit,nFlag);
    }
    return true;
}

bool CFFL_FormFiller::IsDataChanged(CPDFSDK_PageView* pPageView)
{
    return false;
}

void CFFL_FormFiller::SaveData(CPDFSDK_PageView* pPageView)
{
}

void CFFL_FormFiller::SetChangeMark()
{
    m_pApp->FFI_OnChange();
}

void CFFL_FormFiller::GetActionData(CPDFSDK_PageView* pPageView, CPDF_AAction::AActionType type,
                            PDFSDK_FieldAction& fa)
{
    fa.sValue = m_pWidget->GetValue();
}

void CFFL_FormFiller::SetActionData(CPDFSDK_PageView* pPageView, CPDF_AAction::AActionType type,
                                    const PDFSDK_FieldAction& fa)
{
}

bool CFFL_FormFiller::IsActionDataChanged(CPDF_AAction::AActionType type, const PDFSDK_FieldAction& faOld,
                                    const PDFSDK_FieldAction& faNew)
{
    return false;
}

void CFFL_FormFiller::SaveState(CPDFSDK_PageView* pPageView)
{
}

void CFFL_FormFiller::RestoreState(CPDFSDK_PageView* pPageView)
{
}

CPWL_Wnd*  CFFL_FormFiller::ResetPDFWindow(CPDFSDK_PageView* pPageView, bool bRestoreValue)
{
    return GetPDFWindow(pPageView, false);
}

void CFFL_FormFiller::TimerProc()
{

}

IFX_SystemHandler* CFFL_FormFiller::GetSystemHandler() const
{
    return m_pApp->GetSysHandler();
}

void CFFL_FormFiller::OnKeyStroke(bool bKeyDown)
{
}

void CFFL_FormFiller::EscapeFiller(CPDFSDK_PageView* pPageView, bool bDestroyPDFWindow)
{
    m_bValid = false;

    FX_RECT rcRect = GetViewBBox(pPageView, m_pWidget);
    InvalidateRect(rcRect.left, rcRect.top, rcRect.right, rcRect.bottom);

    if(bDestroyPDFWindow)
        DestroyPDFWindow(pPageView);
}

bool CFFL_FormFiller::CanCopy(CPDFSDK_Document* pDocument)
{
    return false;
}

bool CFFL_FormFiller::CanCut(CPDFSDK_Document* pDocument)
{
    return false;
}

bool CFFL_FormFiller::CanPaste(CPDFSDK_Document* pDocument)
{
    return false;
}

void CFFL_FormFiller::DoCopy(CPDFSDK_Document* pDocument)
{
}

void CFFL_FormFiller::DoCut(CPDFSDK_Document* pDocument)
{
}

void CFFL_FormFiller::DoPaste(CPDFSDK_Document* pDocument)
{
}

void CFFL_FormFiller::InvalidateRect(double left, double top, double right, double bottom)
{
    CPDF_Page * pPage = m_pWidget->GetPDFPage();
    m_pApp->FFI_Invalidate(pPage, left, top, right, bottom);
}

/* ------------------------- CFFL_Button ------------------------- */

CFFL_Button::CFFL_Button(CPDFDoc_Environment* pApp, CPDFSDK_Annot* pWidget) :
    CFFL_FormFiller(pApp, pWidget),
    m_bMouseIn(false),
    m_bMouseDown(false)
{
}

CFFL_Button::~CFFL_Button()
{
}

void CFFL_Button::OnMouseEnter(CPDFSDK_PageView *pPageView, CPDFSDK_Annot* pAnnot)
{
    m_bMouseIn = true;
    FX_RECT rect = GetViewBBox(pPageView,pAnnot);
    InvalidateRect(rect.left, rect.top, rect.right, rect.bottom);
}

void CFFL_Button::OnMouseExit(CPDFSDK_PageView *pPageView, CPDFSDK_Annot* pAnnot)
{
    m_bMouseIn = false;

    FX_RECT rect = GetViewBBox(pPageView,pAnnot);
    InvalidateRect(rect.left, rect.top, rect.right, rect.bottom);
    EndTimer();
    ASSERT(m_pWidget != NULL);
}

bool CFFL_Button::OnLButtonDown(CPDFSDK_PageView *pPageView, CPDFSDK_Annot* pAnnot, FX_UINT nFlags, const CPDF_Point& point)
{
    CPDF_Rect rcAnnot = pAnnot->GetRect();
    if(!rcAnnot.Contains(point.x, point.y))
        return false;

    m_bMouseDown = true;
    m_bValid = true;
    FX_RECT rect = GetViewBBox(pPageView, pAnnot);
    InvalidateRect(rect.left, rect.top, rect.right, rect.bottom);
    return true;
}

bool CFFL_Button::OnLButtonUp(CPDFSDK_PageView *pPageView, CPDFSDK_Annot* pAnnot, FX_UINT nFlags, const CPDF_Point& point)
{
    CPDF_Rect rcAnnot = pAnnot->GetRect();
    if(!rcAnnot.Contains(point.x, point.y))
        return false;

    m_bMouseDown = false;
    m_pWidget->GetPDFPage();


    FX_RECT rect = GetViewBBox(pPageView, pAnnot);
    InvalidateRect(rect.left, rect.top, rect.right, rect.bottom);
    return true;
}

bool CFFL_Button::OnMouseMove(CPDFSDK_PageView *pPageView, CPDFSDK_Annot* pAnnot, FX_UINT nFlags, const CPDF_Point& point)
{
    ASSERT(m_pApp != NULL);

    return true;
}

void CFFL_Button::OnDraw(CPDFSDK_PageView *pPageView, CPDFSDK_Annot* pAnnot,
                         CFX_RenderDevice* pDevice, CPDF_Matrix* pUser2Device,
                         FX_DWORD dwFlags)
{
    ASSERT(pPageView != NULL);
    CPDFSDK_Widget* pWidget = (CPDFSDK_Widget*)pAnnot;
    CPDF_FormControl* pCtrl = pWidget->GetFormControl();
    CPDF_FormControl::HighlightingMode eHM = pCtrl->GetHighlightingMode();

    if (eHM == CPDF_FormControl::Push)
    {
        if (m_bMouseDown)
        {
            if (pWidget->IsWidgetAppearanceValid(CPDF_Annot::Down))
                pWidget->DrawAppearance(pDevice, pUser2Device, CPDF_Annot::Down, NULL);
            else
                pWidget->DrawAppearance(pDevice, pUser2Device, CPDF_Annot::Normal, NULL);
        }
        else if (m_bMouseIn)
        {
            if (pWidget->IsWidgetAppearanceValid(CPDF_Annot::Rollover))
                pWidget->DrawAppearance(pDevice, pUser2Device, CPDF_Annot::Rollover, NULL);
            else
                pWidget->DrawAppearance(pDevice, pUser2Device, CPDF_Annot::Normal, NULL);
        }
        else
        {
            pWidget->DrawAppearance(pDevice, pUser2Device, CPDF_Annot::Normal, NULL);
        }
    }
    else
        pWidget->DrawAppearance(pDevice, pUser2Device, CPDF_Annot::Normal, NULL);
}


void CFFL_Button::OnDrawDeactive(CPDFSDK_PageView *pPageView, CPDFSDK_Annot* pAnnot,
                                 CFX_RenderDevice* pDevice, CPDF_Matrix* pUser2Device,
                                 FX_DWORD dwFlags)
{
    OnDraw(pPageView, pAnnot, pDevice, pUser2Device, dwFlags);
}