1 files changed, 732 insertions, 0 deletions

diff --git a/xfa/fwl/cfwl_widgetmgr.cpp b/xfa/fwl/cfwl_widgetmgr.cpp
new file mode 100644
index 0000000000..825de0e14e
--- /dev/null
+++ b/xfa/fwl/cfwl_widgetmgr.cpp
@@ -0,0 +1,732 @@
+// 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/fwl/cfwl_widgetmgr.h"
+
+#include <utility>
+
+#include "third_party/base/ptr_util.h"
+#include "xfa/fwl/cfwl_app.h"
+#include "xfa/fwl/cfwl_form.h"
+#include "xfa/fwl/cfwl_notedriver.h"
+#include "xfa/fxfa/app/xfa_fwladapter.h"
+#include "xfa/fxfa/xfa_ffapp.h"
+
+namespace {
+
+const int kNeedRepaintHitPoints = 12;
+const int kNeedRepaintHitPiece = 3;
+
+struct FWL_NEEDREPAINTHITDATA {
+  CFX_PointF hitPoint;
+  bool bNotNeedRepaint;
+  bool bNotContainByDirty;
+};
+
+}  // namespace
+
+bool FWL_UseOffscreen(CFWL_Widget* pWidget) {
+#if (_FX_OS_ == _FX_MACOSX_)
+  return false;
+#else
+  return !!(pWidget->GetStyles() & FWL_WGTSTYLE_Offscreen);
+#endif
+}
+
+CFWL_WidgetMgr::CFWL_WidgetMgr(CXFA_FFApp* pAdapterNative)
+    : m_dwCapability(0), m_pAdapter(pAdapterNative->GetWidgetMgr(this)) {
+  ASSERT(m_pAdapter);
+  m_mapWidgetItem[nullptr] = pdfium::MakeUnique<Item>();
+#if (_FX_OS_ == _FX_WIN32_DESKTOP_) || (_FX_OS_ == _FX_WIN64_)
+  m_rtScreen.Reset();
+#endif
+}
+
+CFWL_WidgetMgr::~CFWL_WidgetMgr() {}
+
+CFWL_Widget* CFWL_WidgetMgr::GetParentWidget(CFWL_Widget* pWidget) const {
+  Item* pItem = GetWidgetMgrItem(pWidget);
+  return pItem && pItem->pParent ? pItem->pParent->pWidget : nullptr;
+}
+
+CFWL_Widget* CFWL_WidgetMgr::GetOwnerWidget(CFWL_Widget* pWidget) const {
+  Item* pItem = GetWidgetMgrItem(pWidget);
+  return pItem && pItem->pOwner ? pItem->pOwner->pWidget : nullptr;
+}
+
+CFWL_Widget* CFWL_WidgetMgr::GetFirstSiblingWidget(CFWL_Widget* pWidget) const {
+  Item* pItem = GetWidgetMgrItem(pWidget);
+  if (!pItem)
+    return nullptr;
+
+  pItem = pItem->pPrevious;
+  while (pItem && pItem->pPrevious)
+    pItem = pItem->pPrevious;
+  return pItem ? pItem->pWidget : nullptr;
+}
+
+CFWL_Widget* CFWL_WidgetMgr::GetPriorSiblingWidget(CFWL_Widget* pWidget) const {
+  Item* pItem = GetWidgetMgrItem(pWidget);
+  return pItem && pItem->pPrevious ? pItem->pPrevious->pWidget : nullptr;
+}
+
+CFWL_Widget* CFWL_WidgetMgr::GetNextSiblingWidget(CFWL_Widget* pWidget) const {
+  Item* pItem = GetWidgetMgrItem(pWidget);
+  return pItem && pItem->pNext ? pItem->pNext->pWidget : nullptr;
+}
+
+CFWL_Widget* CFWL_WidgetMgr::GetFirstChildWidget(CFWL_Widget* pWidget) const {
+  Item* pItem = GetWidgetMgrItem(pWidget);
+  return pItem && pItem->pChild ? pItem->pChild->pWidget : nullptr;
+}
+
+CFWL_Widget* CFWL_WidgetMgr::GetLastChildWidget(CFWL_Widget* pWidget) const {
+  Item* pItem = GetWidgetMgrItem(pWidget);
+  if (!pItem)
+    return nullptr;
+
+  pItem = pItem->pChild;
+  while (pItem && pItem->pNext)
+    pItem = pItem->pNext;
+  return pItem ? pItem->pWidget : nullptr;
+}
+
+CFWL_Widget* CFWL_WidgetMgr::GetSystemFormWidget(CFWL_Widget* pWidget) const {
+  Item* pItem = GetWidgetMgrItem(pWidget);
+  while (pItem) {
+    if (IsAbleNative(pItem->pWidget))
+      return pItem->pWidget;
+    pItem = pItem->pParent;
+  }
+  return nullptr;
+}
+
+void CFWL_WidgetMgr::AppendWidget(CFWL_Widget* pWidget) {
+  Item* pItem = GetWidgetMgrItem(pWidget);
+  if (!pItem)
+    return;
+  if (!pItem->pParent)
+    return;
+
+  Item* pChild = pItem->pParent->pChild;
+  int32_t i = 0;
+  while (pChild) {
+    if (pChild == pItem) {
+      if (pChild->pPrevious)
+        pChild->pPrevious->pNext = pChild->pNext;
+      if (pChild->pNext)
+        pChild->pNext->pPrevious = pChild->pPrevious;
+      if (pItem->pParent->pChild == pItem)
+        pItem->pParent->pChild = pItem->pNext;
+
+      pItem->pNext = nullptr;
+      pItem->pPrevious = nullptr;
+      break;
+    }
+    if (!pChild->pNext)
+      break;
+
+    pChild = pChild->pNext;
+    ++i;
+  }
+
+  pChild = pItem->pParent->pChild;
+  if (pChild) {
+    while (pChild->pNext)
+      pChild = pChild->pNext;
+
+    pChild->pNext = pItem;
+    pItem->pPrevious = pChild;
+  } else {
+    pItem->pParent->pChild = pItem;
+    pItem->pPrevious = nullptr;
+  }
+  pItem->pNext = nullptr;
+}
+
+void CFWL_WidgetMgr::RepaintWidget(CFWL_Widget* pWidget,
+                                   const CFX_RectF* pRect) {
+  if (!m_pAdapter)
+    return;
+
+  CFWL_Widget* pNative = pWidget;
+  CFX_RectF rect(*pRect);
+  if (IsFormDisabled()) {
+    CFWL_Widget* pOuter = pWidget->GetOuter();
+    while (pOuter) {
+      CFX_RectF rtTemp = pNative->GetWidgetRect();
+      rect.left += rtTemp.left;
+      rect.top += rtTemp.top;
+      pNative = pOuter;
+      pOuter = pOuter->GetOuter();
+    }
+  } else if (!IsAbleNative(pWidget)) {
+    pNative = GetSystemFormWidget(pWidget);
+    if (!pNative)
+      return;
+
+    pWidget->TransformTo(pNative, rect.left, rect.top);
+  }
+  AddRedrawCounts(pNative);
+  m_pAdapter->RepaintWidget(pNative, &rect);
+}
+
+void CFWL_WidgetMgr::InsertWidget(CFWL_Widget* pParent, CFWL_Widget* pChild) {
+  Item* pParentItem = GetWidgetMgrItem(pParent);
+  if (!pParentItem) {
+    auto item = pdfium::MakeUnique<Item>(pParent);
+    pParentItem = item.get();
+    m_mapWidgetItem[pParent] = std::move(item);
+
+    pParentItem->pParent = GetWidgetMgrItem(nullptr);
+    AppendWidget(pParent);
+  }
+
+  Item* pItem = GetWidgetMgrItem(pChild);
+  if (!pItem) {
+    auto item = pdfium::MakeUnique<Item>(pChild);
+    pItem = item.get();
+    m_mapWidgetItem[pChild] = std::move(item);
+  }
+  if (pItem->pParent && pItem->pParent != pParentItem) {
+    if (pItem->pPrevious)
+      pItem->pPrevious->pNext = pItem->pNext;
+    if (pItem->pNext)
+      pItem->pNext->pPrevious = pItem->pPrevious;
+    if (pItem->pParent->pChild == pItem)
+      pItem->pParent->pChild = pItem->pNext;
+  }
+  pItem->pParent = pParentItem;
+  AppendWidget(pChild);
+}
+
+void CFWL_WidgetMgr::RemoveWidget(CFWL_Widget* pWidget) {
+  Item* pItem = GetWidgetMgrItem(pWidget);
+  if (!pItem)
+    return;
+  if (pItem->pPrevious)
+    pItem->pPrevious->pNext = pItem->pNext;
+  if (pItem->pNext)
+    pItem->pNext->pPrevious = pItem->pPrevious;
+  if (pItem->pParent && pItem->pParent->pChild == pItem)
+    pItem->pParent->pChild = pItem->pNext;
+
+  Item* pChild = pItem->pChild;
+  while (pChild) {
+    Item* pNext = pChild->pNext;
+    RemoveWidget(pChild->pWidget);
+    pChild = pNext;
+  }
+  m_mapWidgetItem.erase(pWidget);
+}
+
+void CFWL_WidgetMgr::SetOwner(CFWL_Widget* pOwner, CFWL_Widget* pOwned) {
+  Item* pParentItem = GetWidgetMgrItem(pOwner);
+  if (!pParentItem) {
+    auto item = pdfium::MakeUnique<Item>(pOwner);
+    pParentItem = item.get();
+    m_mapWidgetItem[pOwner] = std::move(item);
+
+    pParentItem->pParent = GetWidgetMgrItem(nullptr);
+    AppendWidget(pOwner);
+  }
+
+  Item* pItem = GetWidgetMgrItem(pOwned);
+  if (!pItem) {
+    auto item = pdfium::MakeUnique<Item>(pOwned);
+    pItem = item.get();
+    m_mapWidgetItem[pOwned] = std::move(item);
+  }
+  pItem->pOwner = pParentItem;
+}
+void CFWL_WidgetMgr::SetParent(CFWL_Widget* pParent, CFWL_Widget* pChild) {
+  Item* pParentItem = GetWidgetMgrItem(pParent);
+  Item* pItem = GetWidgetMgrItem(pChild);
+  if (!pItem)
+    return;
+  if (pItem->pParent && pItem->pParent != pParentItem) {
+    if (pItem->pPrevious)
+      pItem->pPrevious->pNext = pItem->pNext;
+    if (pItem->pNext)
+      pItem->pNext->pPrevious = pItem->pPrevious;
+    if (pItem->pParent->pChild == pItem)
+      pItem->pParent->pChild = pItem->pNext;
+
+    pItem->pNext = nullptr;
+    pItem->pPrevious = nullptr;
+  }
+  pItem->pParent = pParentItem;
+  AppendWidget(pChild);
+}
+
+void CFWL_WidgetMgr::SetWidgetRect_Native(CFWL_Widget* pWidget,
+                                          const CFX_RectF& rect) {
+  if (!FWL_UseOffscreen(pWidget))
+    return;
+
+  Item* pItem = GetWidgetMgrItem(pWidget);
+  pItem->iRedrawCounter++;
+  if (pItem->pOffscreen) {
+    CFX_RenderDevice* pDevice = pItem->pOffscreen->GetRenderDevice();
+    if (pDevice && pDevice->GetBitmap()) {
+      CFX_DIBitmap* pBitmap = pDevice->GetBitmap();
+      if (pBitmap->GetWidth() - rect.width > 1 ||
+          pBitmap->GetHeight() - rect.height > 1) {
+        pItem->pOffscreen.reset();
+      }
+    }
+  }
+#if (_FX_OS_ == _FX_WIN32_DESKTOP_) || (_FX_OS_ == _FX_WIN64_)
+  pItem->bOutsideChanged = !m_rtScreen.Contains(rect);
+#endif
+}
+
+CFWL_Widget* CFWL_WidgetMgr::GetWidgetAtPoint(CFWL_Widget* parent,
+                                              FX_FLOAT x,
+                                              FX_FLOAT y) {
+  if (!parent)
+    return nullptr;
+
+  FX_FLOAT x1;
+  FX_FLOAT y1;
+  CFWL_Widget* child = GetLastChildWidget(parent);
+  while (child) {
+    if ((child->GetStates() & FWL_WGTSTATE_Invisible) == 0) {
+      x1 = x;
+      y1 = y;
+      CFX_Matrix matrixOnParent;
+      child->GetMatrix(matrixOnParent, false);
+      CFX_Matrix m;
+      m.SetIdentity();
+      m.SetReverse(matrixOnParent);
+      m.TransformPoint(x1, y1);
+      CFX_RectF bounds = child->GetWidgetRect();
+      if (bounds.Contains(x1, y1)) {
+        x1 -= bounds.left;
+        y1 -= bounds.top;
+        return GetWidgetAtPoint(child, x1, y1);
+      }
+    }
+    child = GetPriorSiblingWidget(child);
+  }
+  return parent;
+}
+
+void CFWL_WidgetMgr::NotifySizeChanged(CFWL_Widget* pForm,
+                                       FX_FLOAT fx,
+                                       FX_FLOAT fy) {
+  if (FWL_UseOffscreen(pForm))
+    GetWidgetMgrItem(pForm)->pOffscreen.reset();
+}
+
+CFWL_Widget* CFWL_WidgetMgr::NextTab(CFWL_Widget* parent,
+                                     CFWL_Widget* focus,
+                                     bool& bFind) {
+  CFWL_WidgetMgr* pMgr = parent->GetOwnerApp()->GetWidgetMgr();
+  CFWL_Widget* child = pMgr->GetFirstChildWidget(parent);
+  while (child) {
+    if (focus == child)
+      bFind = true;
+
+    if ((child->GetStyles() & FWL_WGTSTYLE_TabStop) &&
+        (!focus || (focus != child && bFind))) {
+      return child;
+    }
+    CFWL_Widget* bRet = NextTab(child, focus, bFind);
+    if (bRet)
+      return bRet;
+
+    child = pMgr->GetNextSiblingWidget(child);
+  }
+  return nullptr;
+}
+
+int32_t CFWL_WidgetMgr::CountRadioButtonGroup(CFWL_Widget* pFirst) const {
+  int32_t iRet = 0;
+  CFWL_Widget* pChild = pFirst;
+  while (pChild) {
+    pChild = GetNextSiblingWidget(pChild);
+    ++iRet;
+  }
+  return iRet;
+}
+
+CFWL_Widget* CFWL_WidgetMgr::GetRadioButtonGroupHeader(
+    CFWL_Widget* pRadioButton) const {
+  CFWL_Widget* pNext = pRadioButton;
+  if (pNext && (pNext->GetStyles() & FWL_WGTSTYLE_Group))
+    return pNext;
+  return nullptr;
+}
+
+void CFWL_WidgetMgr::GetSameGroupRadioButton(
+    CFWL_Widget* pRadioButton,
+    CFX_ArrayTemplate<CFWL_Widget*>& group) const {
+  CFWL_Widget* pFirst = GetFirstSiblingWidget(pRadioButton);
+  if (!pFirst)
+    pFirst = pRadioButton;
+
+  int32_t iGroup = CountRadioButtonGroup(pFirst);
+  if (iGroup < 2)
+    return;
+  group.Add(GetRadioButtonGroupHeader(pRadioButton));
+}
+
+CFWL_Widget* CFWL_WidgetMgr::GetDefaultButton(CFWL_Widget* pParent) const {
+  if ((pParent->GetClassID() == FWL_Type::PushButton) &&
+      (pParent->GetStates() & (1 << (FWL_WGTSTATE_MAX + 2)))) {
+    return pParent;
+  }
+
+  CFWL_Widget* child =
+      pParent->GetOwnerApp()->GetWidgetMgr()->GetFirstChildWidget(pParent);
+  while (child) {
+    if ((child->GetClassID() == FWL_Type::PushButton) &&
+        (child->GetStates() & (1 << (FWL_WGTSTATE_MAX + 2)))) {
+      return child;
+    }
+    if (CFWL_Widget* find = GetDefaultButton(child))
+      return find;
+
+    child = child->GetOwnerApp()->GetWidgetMgr()->GetNextSiblingWidget(child);
+  }
+  return nullptr;
+}
+
+void CFWL_WidgetMgr::AddRedrawCounts(CFWL_Widget* pWidget) {
+  GetWidgetMgrItem(pWidget)->iRedrawCounter++;
+}
+
+void CFWL_WidgetMgr::ResetRedrawCounts(CFWL_Widget* pWidget) {
+  GetWidgetMgrItem(pWidget)->iRedrawCounter = 0;
+}
+
+CFWL_WidgetMgr::Item* CFWL_WidgetMgr::GetWidgetMgrItem(
+    CFWL_Widget* pWidget) const {
+  auto it = m_mapWidgetItem.find(pWidget);
+  return it != m_mapWidgetItem.end() ? static_cast<Item*>(it->second.get())
+                                     : nullptr;
+}
+
+bool CFWL_WidgetMgr::IsAbleNative(CFWL_Widget* pWidget) const {
+  if (!pWidget)
+    return false;
+  if (!pWidget->IsInstance(FX_WSTRC(FWL_CLASS_Form)))
+    return false;
+
+  uint32_t dwStyles = pWidget->GetStyles();
+  return ((dwStyles & FWL_WGTSTYLE_WindowTypeMask) ==
+          FWL_WGTSTYLE_OverLapper) ||
+         (dwStyles & FWL_WGTSTYLE_Popup);
+}
+
+void CFWL_WidgetMgr::GetAdapterPopupPos(CFWL_Widget* pWidget,
+                                        FX_FLOAT fMinHeight,
+                                        FX_FLOAT fMaxHeight,
+                                        const CFX_RectF& rtAnchor,
+                                        CFX_RectF& rtPopup) const {
+  m_pAdapter->GetPopupPos(pWidget, fMinHeight, fMaxHeight, rtAnchor, rtPopup);
+}
+
+void CFWL_WidgetMgr::OnSetCapability(uint32_t dwCapability) {
+  m_dwCapability = dwCapability;
+}
+
+void CFWL_WidgetMgr::OnProcessMessageToForm(CFWL_Message* pMessage) {
+  if (!pMessage)
+    return;
+  if (!pMessage->m_pDstTarget)
+    return;
+
+  CFWL_Widget* pDstWidget = pMessage->m_pDstTarget;
+  const CFWL_App* pApp = pDstWidget->GetOwnerApp();
+  if (!pApp)
+    return;
+
+  CFWL_NoteDriver* pNoteDriver =
+      static_cast<CFWL_NoteDriver*>(pApp->GetNoteDriver());
+  if (!pNoteDriver)
+    return;
+
+  std::unique_ptr<CFWL_Message> pClonedMessage = pMessage->Clone();
+  if (IsFormDisabled())
+    pNoteDriver->ProcessMessage(pClonedMessage.get());
+  else
+    pNoteDriver->QueueMessage(std::move(pClonedMessage));
+
+#if (_FX_OS_ == _FX_MACOSX_)
+  CFWL_NoteLoop* pTopLoop = pNoteDriver->GetTopLoop();
+  if (pTopLoop)
+    pNoteDriver->UnqueueMessage(pTopLoop);
+#endif
+}
+
+void CFWL_WidgetMgr::OnDrawWidget(CFWL_Widget* pWidget,
+                                  CFX_Graphics* pGraphics,
+                                  const CFX_Matrix* pMatrix) {
+  if (!pWidget || !pGraphics)
+    return;
+
+  CFX_Graphics* pTemp = DrawWidgetBefore(pWidget, pGraphics, pMatrix);
+  CFX_RectF clipCopy = pWidget->GetWidgetRect();
+  clipCopy.left = clipCopy.top = 0;
+
+  if (UseOffscreenDirect(pWidget)) {
+    DrawWidgetAfter(pWidget, pGraphics, clipCopy, pMatrix);
+    return;
+  }
+  CFX_RectF clipBounds;
+
+#if _FX_OS_ == _FX_WIN32_DESKTOP_ || _FX_OS_ == _FX_WIN64_ || \
+    _FX_OS_ == _FX_LINUX_DESKTOP_ || _FX_OS_ == _FX_ANDROID_
+  pWidget->GetDelegate()->OnDrawWidget(pTemp, pMatrix);
+  pGraphics->GetClipRect(clipBounds);
+  clipCopy = clipBounds;
+#elif _FX_OS_ == _FX_MACOSX_
+  if (IsFormDisabled()) {
+    pWidget->GetDelegate()->OnDrawWidget(pTemp, pMatrix);
+    pGraphics->GetClipRect(clipBounds);
+    clipCopy = clipBounds;
+  } else {
+    clipBounds.Set(pMatrix->a, pMatrix->b, pMatrix->c, pMatrix->d);
+    const_cast<CFX_Matrix*>(pMatrix)->SetIdentity();  // FIXME: const cast.
+    pWidget->GetDelegate()->OnDrawWidget(pTemp, pMatrix);
+  }
+#endif  // _FX_OS_ == _FX_MACOSX_
+
+  if (!IsFormDisabled()) {
+    CFX_RectF rtClient;
+    pWidget->GetClientRect(rtClient);
+    clipBounds.Intersect(rtClient);
+  }
+  if (!clipBounds.IsEmpty())
+    DrawChild(pWidget, clipBounds, pTemp, pMatrix);
+
+  DrawWidgetAfter(pWidget, pGraphics, clipCopy, pMatrix);
+  ResetRedrawCounts(pWidget);
+}
+
+void CFWL_WidgetMgr::DrawChild(CFWL_Widget* parent,
+                               const CFX_RectF& rtClip,
+                               CFX_Graphics* pGraphics,
+                               const CFX_Matrix* pMatrix) {
+  if (!parent)
+    return;
+
+  bool bFormDisable = IsFormDisabled();
+  CFWL_Widget* pNextChild = GetFirstChildWidget(parent);
+  while (pNextChild) {
+    CFWL_Widget* child = pNextChild;
+    pNextChild = GetNextSiblingWidget(child);
+    if (child->GetStates() & FWL_WGTSTATE_Invisible)
+      continue;
+
+    CFX_RectF rtWidget = child->GetWidgetRect();
+    if (rtWidget.IsEmpty())
+      continue;
+
+    CFX_Matrix widgetMatrix;
+    CFX_RectF clipBounds(rtWidget);
+    if (!bFormDisable)
+      child->GetMatrix(widgetMatrix, true);
+    if (pMatrix)
+      widgetMatrix.Concat(*pMatrix);
+
+    if (!bFormDisable) {
+      widgetMatrix.TransformPoint(clipBounds.left, clipBounds.top);
+      clipBounds.Intersect(rtClip);
+      if (clipBounds.IsEmpty())
+        continue;
+
+      pGraphics->SaveGraphState();
+      pGraphics->SetClipRect(clipBounds);
+    }
+    widgetMatrix.Translate(rtWidget.left, rtWidget.top, true);
+
+    if (IFWL_WidgetDelegate* pDelegate = child->GetDelegate()) {
+      if (IsFormDisabled() || IsNeedRepaint(child, &widgetMatrix, rtClip))
+        pDelegate->OnDrawWidget(pGraphics, &widgetMatrix);
+    }
+    if (!bFormDisable)
+      pGraphics->RestoreGraphState();
+
+    DrawChild(child, clipBounds, pGraphics,
+              bFormDisable ? &widgetMatrix : pMatrix);
+    child = GetNextSiblingWidget(child);
+  }
+}
+
+CFX_Graphics* CFWL_WidgetMgr::DrawWidgetBefore(CFWL_Widget* pWidget,
+                                               CFX_Graphics* pGraphics,
+                                               const CFX_Matrix* pMatrix) {
+  if (!FWL_UseOffscreen(pWidget))
+    return pGraphics;
+
+  Item* pItem = GetWidgetMgrItem(pWidget);
+  if (!pItem->pOffscreen) {
+    pItem->pOffscreen.reset(new CFX_Graphics);
+    CFX_RectF rect = pWidget->GetWidgetRect();
+    pItem->pOffscreen->Create((int32_t)rect.width, (int32_t)rect.height,
+                              FXDIB_Argb);
+  }
+  CFX_RectF rect;
+  pGraphics->GetClipRect(rect);
+  pItem->pOffscreen->SetClipRect(rect);
+  return pItem->pOffscreen.get();
+}
+
+void CFWL_WidgetMgr::DrawWidgetAfter(CFWL_Widget* pWidget,
+                                     CFX_Graphics* pGraphics,
+                                     CFX_RectF& rtClip,
+                                     const CFX_Matrix* pMatrix) {
+  if (FWL_UseOffscreen(pWidget)) {
+    Item* pItem = GetWidgetMgrItem(pWidget);
+    pGraphics->Transfer(pItem->pOffscreen.get(), rtClip.left, rtClip.top,
+                        rtClip, pMatrix);
+#ifdef _WIN32
+    pItem->pOffscreen->ClearClip();
+#endif
+  }
+  Item* pItem = GetWidgetMgrItem(pWidget);
+  pItem->iRedrawCounter = 0;
+}
+
+bool CFWL_WidgetMgr::IsNeedRepaint(CFWL_Widget* pWidget,
+                                   CFX_Matrix* pMatrix,
+                                   const CFX_RectF& rtDirty) {
+  Item* pItem = GetWidgetMgrItem(pWidget);
+  if (pItem && pItem->iRedrawCounter > 0) {
+    pItem->iRedrawCounter = 0;
+    return true;
+  }
+
+  CFX_RectF rtWidget = pWidget->GetWidgetRect();
+  rtWidget.left = rtWidget.top = 0;
+  pMatrix->TransformRect(rtWidget);
+  if (!rtWidget.IntersectWith(rtDirty))
+    return false;
+
+  CFWL_Widget* pChild =
+      pWidget->GetOwnerApp()->GetWidgetMgr()->GetFirstChildWidget(pWidget);
+  if (!pChild)
+    return true;
+
+  CFX_RectF rtChilds;
+  rtChilds.Empty();
+  bool bChildIntersectWithDirty = false;
+  bool bOrginPtIntersectWidthChild = false;
+  bool bOrginPtIntersectWidthDirty =
+      rtDirty.Contains(rtWidget.left, rtWidget.top);
+  static FWL_NEEDREPAINTHITDATA hitPoint[kNeedRepaintHitPoints];
+  FXSYS_memset(hitPoint, 0, sizeof(hitPoint));
+  FX_FLOAT fxPiece = rtWidget.width / kNeedRepaintHitPiece;
+  FX_FLOAT fyPiece = rtWidget.height / kNeedRepaintHitPiece;
+  hitPoint[2].hitPoint.x = hitPoint[6].hitPoint.x = rtWidget.left;
+  hitPoint[0].hitPoint.x = hitPoint[3].hitPoint.x = hitPoint[7].hitPoint.x =
+      hitPoint[10].hitPoint.x = fxPiece + rtWidget.left;
+  hitPoint[1].hitPoint.x = hitPoint[4].hitPoint.x = hitPoint[8].hitPoint.x =
+      hitPoint[11].hitPoint.x = fxPiece * 2 + rtWidget.left;
+  hitPoint[5].hitPoint.x = hitPoint[9].hitPoint.x =
+      rtWidget.width + rtWidget.left;
+  hitPoint[0].hitPoint.y = hitPoint[1].hitPoint.y = rtWidget.top;
+  hitPoint[2].hitPoint.y = hitPoint[3].hitPoint.y = hitPoint[4].hitPoint.y =
+      hitPoint[5].hitPoint.y = fyPiece + rtWidget.top;
+  hitPoint[6].hitPoint.y = hitPoint[7].hitPoint.y = hitPoint[8].hitPoint.y =
+      hitPoint[9].hitPoint.y = fyPiece * 2 + rtWidget.top;
+  hitPoint[10].hitPoint.y = hitPoint[11].hitPoint.y =
+      rtWidget.height + rtWidget.top;
+  do {
+    CFX_RectF rect = pChild->GetWidgetRect();
+    CFX_RectF r = rect;
+    r.left += rtWidget.left;
+    r.top += rtWidget.top;
+    if (r.IsEmpty())
+      continue;
+    if (r.Contains(rtDirty))
+      return false;
+    if (!bChildIntersectWithDirty && r.IntersectWith(rtDirty))
+      bChildIntersectWithDirty = true;
+    if (bOrginPtIntersectWidthDirty && !bOrginPtIntersectWidthChild)
+      bOrginPtIntersectWidthChild = rect.Contains(0, 0);
+
+    if (rtChilds.IsEmpty())
+      rtChilds = rect;
+    else if (!(pChild->GetStates() & FWL_WGTSTATE_Invisible))
+      rtChilds.Union(rect);
+
+    for (int32_t i = 0; i < kNeedRepaintHitPoints; i++) {
+      if (hitPoint[i].bNotContainByDirty || hitPoint[i].bNotNeedRepaint)
+        continue;
+      if (!rtDirty.Contains(hitPoint[i].hitPoint)) {
+        hitPoint[i].bNotContainByDirty = true;
+        continue;
+      }
+      if (r.Contains(hitPoint[i].hitPoint))
+        hitPoint[i].bNotNeedRepaint = true;
+    }
+    pChild =
+        pChild->GetOwnerApp()->GetWidgetMgr()->GetNextSiblingWidget(pChild);
+  } while (pChild);
+
+  if (!bChildIntersectWithDirty)
+    return true;
+  if (bOrginPtIntersectWidthDirty && !bOrginPtIntersectWidthChild)
+    return true;
+  if (rtChilds.IsEmpty())
+    return true;
+
+  int32_t repaintPoint = kNeedRepaintHitPoints;
+  for (int32_t i = 0; i < kNeedRepaintHitPoints; i++) {
+    if (hitPoint[i].bNotNeedRepaint)
+      repaintPoint--;
+  }
+  if (repaintPoint > 0)
+    return true;
+
+  pMatrix->TransformRect(rtChilds);
+  if (rtChilds.Contains(rtDirty) || rtChilds.Contains(rtWidget))
+    return false;
+  return true;
+}
+
+bool CFWL_WidgetMgr::UseOffscreenDirect(CFWL_Widget* pWidget) const {
+  Item* pItem = GetWidgetMgrItem(pWidget);
+  if (!FWL_UseOffscreen(pWidget) || !(pItem->pOffscreen))
+    return false;
+
+#if (_FX_OS_ == _FX_WIN32_DESKTOP_) || (_FX_OS_ == _FX_WIN64_)
+  if (pItem->bOutsideChanged) {
+    CFX_RectF r = pWidget->GetWidgetRect();
+    CFX_RectF temp(m_rtScreen);
+    temp.Deflate(50, 50);
+    if (!temp.Contains(r))
+      return false;
+
+    pItem->bOutsideChanged = false;
+  }
+#endif
+
+  return pItem->iRedrawCounter == 0;
+}
+
+CFWL_WidgetMgr::Item::Item() : CFWL_WidgetMgr::Item(nullptr) {}
+
+CFWL_WidgetMgr::Item::Item(CFWL_Widget* widget)
+    : pParent(nullptr),
+      pOwner(nullptr),
+      pChild(nullptr),
+      pPrevious(nullptr),
+      pNext(nullptr),
+      pWidget(widget),
+      iRedrawCounter(0)
+#if (_FX_OS_ == _FX_WIN32_DESKTOP_) || (_FX_OS_ == _FX_WIN64_)
+      ,
+      bOutsideChanged(false)
+#endif
+{
+}
+
+CFWL_WidgetMgr::Item::~Item() {}