// 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 "xfa/fxfa/cxfa_ffimageedit.h"

#include <utility>

#include "third_party/base/ptr_util.h"
#include "xfa/fwl/cfwl_app.h"
#include "xfa/fwl/cfwl_messagemouse.h"
#include "xfa/fwl/cfwl_notedriver.h"
#include "xfa/fwl/cfwl_picturebox.h"
#include "xfa/fxfa/cxfa_ffdoc.h"
#include "xfa/fxfa/cxfa_ffdocview.h"
#include "xfa/fxfa/cxfa_fffield.h"
#include "xfa/fxfa/cxfa_ffpageview.h"
#include "xfa/fxfa/cxfa_ffwidget.h"

CXFA_FFImageEdit::CXFA_FFImageEdit(CXFA_WidgetAcc* pDataAcc)
    : CXFA_FFField(pDataAcc), m_pOldDelegate(nullptr) {}

CXFA_FFImageEdit::~CXFA_FFImageEdit() {
  CXFA_FFImageEdit::UnloadWidget();
}

bool CXFA_FFImageEdit::LoadWidget() {
  auto pNew = pdfium::MakeUnique<CFWL_PictureBox>(GetFWLApp());
  CFWL_PictureBox* pPictureBox = pNew.get();
  m_pNormalWidget = std::move(pNew);
  m_pNormalWidget->SetLayoutItem(this);

  CFWL_NoteDriver* pNoteDriver =
      m_pNormalWidget->GetOwnerApp()->GetNoteDriver();
  pNoteDriver->RegisterEventTarget(m_pNormalWidget.get(),
                                   m_pNormalWidget.get());
  m_pOldDelegate = pPictureBox->GetDelegate();
  pPictureBox->SetDelegate(this);

  CXFA_FFField::LoadWidget();
  if (!m_pDataAcc->GetImageEditImage())
    UpdateFWLData();

  return true;
}

void CXFA_FFImageEdit::UnloadWidget() {
  m_pDataAcc->SetImageEditImage(nullptr);
  CXFA_FFField::UnloadWidget();
}

void CXFA_FFImageEdit::RenderWidget(CXFA_Graphics* pGS,
                                    CFX_Matrix* pMatrix,
                                    uint32_t dwStatus) {
  if (!IsMatchVisibleStatus(dwStatus))
    return;

  CFX_Matrix mtRotate = GetRotateMatrix();
  if (pMatrix)
    mtRotate.Concat(*pMatrix);

  CXFA_FFWidget::RenderWidget(pGS, &mtRotate, dwStatus);
  CXFA_Border borderUI = m_pDataAcc->GetUIBorder();
  DrawBorder(pGS, borderUI, m_rtUI, &mtRotate);
  RenderCaption(pGS, &mtRotate);
  CFX_RetainPtr<CFX_DIBitmap> pDIBitmap = m_pDataAcc->GetImageEditImage();
  if (!pDIBitmap)
    return;

  CFX_RectF rtImage = m_pNormalWidget->GetWidgetRect();
  int32_t iHorzAlign = XFA_ATTRIBUTEENUM_Left;
  int32_t iVertAlign = XFA_ATTRIBUTEENUM_Top;
  if (CXFA_Para para = m_pDataAcc->GetPara()) {
    iHorzAlign = para.GetHorizontalAlign();
    iVertAlign = para.GetVerticalAlign();
  }

  int32_t iAspect = XFA_ATTRIBUTEENUM_Fit;
  if (CXFA_Value value = m_pDataAcc->GetFormValue()) {
    if (CXFA_Image imageObj = value.GetImage())
      iAspect = imageObj.GetAspect();
  }

  int32_t iImageXDpi = 0;
  int32_t iImageYDpi = 0;
  m_pDataAcc->GetImageEditDpi(iImageXDpi, iImageYDpi);
  XFA_DrawImage(pGS, rtImage, &mtRotate, pDIBitmap, iAspect, iImageXDpi,
                iImageYDpi, iHorzAlign, iVertAlign);
}

bool CXFA_FFImageEdit::OnLButtonDown(uint32_t dwFlags,
                                     const CFX_PointF& point) {
  if (m_pDataAcc->GetAccess() != XFA_ATTRIBUTEENUM_Open)
    return false;
  if (!PtInActiveRect(point))
    return false;

  SetButtonDown(true);

  CFWL_MessageMouse ms(nullptr, m_pNormalWidget.get());
  ms.m_dwCmd = FWL_MouseCommand::LeftButtonDown;
  ms.m_dwFlags = dwFlags;
  ms.m_pos = FWLToClient(point);
  TranslateFWLMessage(&ms);
  return true;
}

void CXFA_FFImageEdit::SetFWLRect() {
  if (!m_pNormalWidget)
    return;

  CFX_RectF rtUIMargin = m_pDataAcc->GetUIMargin();
  CFX_RectF rtImage(m_rtUI);
  rtImage.Deflate(rtUIMargin.left, rtUIMargin.top, rtUIMargin.width,
                  rtUIMargin.height);
  m_pNormalWidget->SetWidgetRect(rtImage);
}

bool CXFA_FFImageEdit::CommitData() {
  return true;
}

bool CXFA_FFImageEdit::UpdateFWLData() {
  m_pDataAcc->SetImageEditImage(nullptr);
  m_pDataAcc->LoadImageEditImage();
  return true;
}

void CXFA_FFImageEdit::OnProcessMessage(CFWL_Message* pMessage) {
  m_pOldDelegate->OnProcessMessage(pMessage);
}

void CXFA_FFImageEdit::OnProcessEvent(CFWL_Event* pEvent) {
  CXFA_FFField::OnProcessEvent(pEvent);
  m_pOldDelegate->OnProcessEvent(pEvent);
}

void CXFA_FFImageEdit::OnDrawWidget(CXFA_Graphics* pGraphics,
                                    const CFX_Matrix* pMatrix) {
  m_pOldDelegate->OnDrawWidget(pGraphics, pMatrix);
}