Merge IFWL and CFWL classes.

xfa/fwl/core/cfwl_widget.cpp

 // 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/core/cfwl_widget.h"
 
+#include <algorithm>
+#include <utility>
+
 #include "xfa/fde/tto/fde_textout.h"
 #include "xfa/fwl/core/cfwl_app.h"
+#include "xfa/fwl/core/cfwl_combobox.h"
+#include "xfa/fwl/core/cfwl_evtkey.h"
+#include "xfa/fwl/core/cfwl_evtkillfocus.h"
+#include "xfa/fwl/core/cfwl_evtmouse.h"
+#include "xfa/fwl/core/cfwl_evtmousewheel.h"
+#include "xfa/fwl/core/cfwl_evtsetfocus.h"
+#include "xfa/fwl/core/cfwl_evtsizechanged.h"
+#include "xfa/fwl/core/cfwl_form.h"
+#include "xfa/fwl/core/cfwl_msgkey.h"
+#include "xfa/fwl/core/cfwl_msgkillfocus.h"
+#include "xfa/fwl/core/cfwl_msgmouse.h"
+#include "xfa/fwl/core/cfwl_msgmousewheel.h"
+#include "xfa/fwl/core/cfwl_msgsetfocus.h"
 #include "xfa/fwl/core/cfwl_notedriver.h"
+#include "xfa/fwl/core/cfwl_themebackground.h"
+#include "xfa/fwl/core/cfwl_themepart.h"
 #include "xfa/fwl/core/cfwl_themetext.h"
 #include "xfa/fwl/core/cfwl_widgetmgr.h"
 #include "xfa/fwl/core/ifwl_themeprovider.h"
-
+#include "xfa/fxfa/xfa_ffapp.h"
+
+#define FWL_STYLEEXT_MNU_Vert (1L << 0)
 #define FWL_WGT_CalcHeight 2048
 #define FWL_WGT_CalcWidth 2048
 #define FWL_WGT_CalcMultiLineDefWidth 120.0f
 
-CFWL_Widget::CFWL_Widget(const CFWL_App* app) : m_pApp(app) {}
-
-CFWL_Widget::~CFWL_Widget() {}
-
-void CFWL_Widget::Initialize() {
-  ASSERT(m_pIface);
-  m_pIface->SetAssociateWidget(this);
+CFWL_Widget::CFWL_Widget(const CFWL_App* app,
+                         std::unique_ptr<CFWL_WidgetProperties> properties,
+                         CFWL_Widget* pOuter)
+    : m_pOwnerApp(app),
+      m_pWidgetMgr(app->GetWidgetMgr()),
+      m_pProperties(std::move(properties)),
+      m_pOuter(pOuter),
+      m_iLock(0),
+      m_pLayoutItem(nullptr),
+      m_nEventKey(0),
+      m_pDelegate(nullptr) {
+  ASSERT(m_pWidgetMgr);
+
+  CFWL_Widget* pParent = m_pProperties->m_pParent;
+  m_pWidgetMgr->InsertWidget(pParent, this);
+  if (IsChild())
+    return;
+
+  CFWL_Widget* pOwner = m_pProperties->m_pOwner;
+  if (pOwner)
+    m_pWidgetMgr->SetOwner(pOwner, this);
+}
+
+CFWL_Widget::~CFWL_Widget() {
+  NotifyDriver();
+  m_pWidgetMgr->RemoveWidget(this);
+}
+
+bool CFWL_Widget::IsInstance(const CFX_WideStringC& wsClass) const {
+  return false;
 }
 
 void CFWL_Widget::GetWidgetRect(CFX_RectF& rect, bool bAutoSize) {
-  if (m_pIface)
-    m_pIface->GetWidgetRect(rect, bAutoSize);
+  if (!bAutoSize) {
+    rect = m_pProperties->m_rtWidget;
+    return;
+  }
+
+  if (HasEdge()) {
+    FX_FLOAT fEdge = GetEdgeWidth();
+    rect.Inflate(fEdge, fEdge);
+  }
+  if (HasBorder()) {
+    FX_FLOAT fBorder = GetBorderSize();
+    rect.Inflate(fBorder, fBorder);
+  }
 }
 
 void CFWL_Widget::SetWidgetRect(const CFX_RectF& rect) {
-  if (m_pIface)
-    m_pIface->SetWidgetRect(rect);
+  CFX_RectF rtOld = m_pProperties->m_rtWidget;
+  m_pProperties->m_rtWidget = rect;
+  if (IsChild()) {
+    if (FXSYS_fabs(rtOld.width - rect.width) > 0.5f ||
+        FXSYS_fabs(rtOld.height - rect.height) > 0.5f) {
+      CFWL_EvtSizeChanged ev;
+      ev.m_pSrcTarget = this;
+      ev.m_rtOld = rtOld;
+      ev.m_rtNew = rect;
+
+      if (IFWL_WidgetDelegate* pDelegate = GetDelegate())
+        pDelegate->OnProcessEvent(&ev);
+    }
+    return;
+  }
+  m_pWidgetMgr->SetWidgetRect_Native(this, rect);
+}
+
+void CFWL_Widget::GetClientRect(CFX_RectF& rect) {
+  GetEdgeRect(rect);
+  if (HasEdge()) {
+    FX_FLOAT fEdge = GetEdgeWidth();
+    rect.Deflate(fEdge, fEdge);
+  }
+}
+
+void CFWL_Widget::SetParent(CFWL_Widget* pParent) {
+  m_pProperties->m_pParent = pParent;
+  m_pWidgetMgr->SetParent(pParent, this);
+}
+
+uint32_t CFWL_Widget::GetStyles() const {
+  return m_pProperties->m_dwStyles;
 }
 
 void CFWL_Widget::ModifyStyles(uint32_t dwStylesAdded,
                                uint32_t dwStylesRemoved) {
-  if (m_pIface)
-    m_pIface->ModifyStyles(dwStylesAdded, dwStylesRemoved);
-}
-
-uint32_t CFWL_Widget::GetStylesEx() {
-  return m_pIface ? m_pIface->GetStylesEx() : 0;
+  m_pProperties->m_dwStyles =
+      (m_pProperties->m_dwStyles & ~dwStylesRemoved) | dwStylesAdded;
+}
+
+uint32_t CFWL_Widget::GetStylesEx() const {
+  return m_pProperties->m_dwStyleExes;
+}
+uint32_t CFWL_Widget::GetStates() const {
+  return m_pProperties->m_dwStates;
 }
 
 void CFWL_Widget::ModifyStylesEx(uint32_t dwStylesExAdded,
                                  uint32_t dwStylesExRemoved) {
-  m_pIface->ModifyStylesEx(dwStylesExAdded, dwStylesExRemoved);
-}
-
-uint32_t CFWL_Widget::GetStates() {
-  return m_pIface ? m_pIface->GetStates() : 0;
+  m_pProperties->m_dwStyleExes =
+      (m_pProperties->m_dwStyleExes & ~dwStylesExRemoved) | dwStylesExAdded;
+}
+
+static void NotifyHideChildWidget(CFWL_WidgetMgr* widgetMgr,
+                                  CFWL_Widget* widget,
+                                  CFWL_NoteDriver* noteDriver) {
+  CFWL_Widget* child = widgetMgr->GetFirstChildWidget(widget);
+  while (child) {
+    noteDriver->NotifyTargetHide(child);
+    NotifyHideChildWidget(widgetMgr, child, noteDriver);
+    child = widgetMgr->GetNextSiblingWidget(child);
+  }
 }
 
 void CFWL_Widget::SetStates(uint32_t dwStates, bool bSet) {
-  if (m_pIface)
-    m_pIface->SetStates(dwStates, bSet);
-}
-
-void CFWL_Widget::SetLayoutItem(void* pItem) {
-  if (m_pIface)
-    m_pIface->SetLayoutItem(pItem);
-}
-
-void CFWL_Widget::Update() {
-  if (m_pIface)
-    m_pIface->Update();
-}
-
-void CFWL_Widget::LockUpdate() {
-  if (m_pIface)
-    m_pIface->LockUpdate();
-}
-
-void CFWL_Widget::UnlockUpdate() {
-  if (m_pIface)
-    m_pIface->UnlockUpdate();
+  bSet ? (m_pProperties->m_dwStates |= dwStates)
+       : (m_pProperties->m_dwStates &= ~dwStates);
+  if (!(dwStates & FWL_WGTSTATE_Invisible) || !bSet)
+    return;
+
+  CFWL_NoteDriver* noteDriver =
+      static_cast<CFWL_NoteDriver*>(GetOwnerApp()->GetNoteDriver());
+  CFWL_WidgetMgr* widgetMgr = GetOwnerApp()->GetWidgetMgr();
+  noteDriver->NotifyTargetHide(this);
+  CFWL_Widget* child = widgetMgr->GetFirstChildWidget(this);
+  while (child) {
+    noteDriver->NotifyTargetHide(child);
+    NotifyHideChildWidget(widgetMgr, child, noteDriver);
+    child = widgetMgr->GetNextSiblingWidget(child);
+  }
+  return;
 }
 
 FWL_WidgetHit CFWL_Widget::HitTest(FX_FLOAT fx, FX_FLOAT fy) {
-  if (!m_pIface)
-    return FWL_WidgetHit::Unknown;
-  return m_pIface->HitTest(fx, fy);
-}
-
-void CFWL_Widget::DrawWidget(CFX_Graphics* pGraphics,
+  CFX_RectF rtClient;
+  GetClientRect(rtClient);
+  if (rtClient.Contains(fx, fy))
+    return FWL_WidgetHit::Client;
+  if (HasEdge()) {
+    CFX_RectF rtEdge;
+    GetEdgeRect(rtEdge);
+    if (rtEdge.Contains(fx, fy))
+      return FWL_WidgetHit::Edge;
+  }
+  if (HasBorder()) {
+    CFX_RectF rtRelative;
+    GetRelativeRect(rtRelative);
+    if (rtRelative.Contains(fx, fy))
+      return FWL_WidgetHit::Border;
+  }
+  return FWL_WidgetHit::Unknown;
+}
+
+void CFWL_Widget::TransformTo(CFWL_Widget* pWidget,
+                              FX_FLOAT& fx,
+                              FX_FLOAT& fy) {
+  if (m_pWidgetMgr->IsFormDisabled()) {
+    CFX_SizeF szOffset;
+    if (IsParent(pWidget)) {
+      szOffset = GetOffsetFromParent(pWidget);
+    } else {
+      szOffset = pWidget->GetOffsetFromParent(this);
+      szOffset.x = -szOffset.x;
+      szOffset.y = -szOffset.y;
+    }
+    fx += szOffset.x;
+    fy += szOffset.y;
+    return;
+  }
+  CFX_RectF r;
+  CFX_Matrix m;
+  CFWL_Widget* parent = GetParent();
+  if (parent) {
+    GetWidgetRect(r);
+    fx += r.left;
+    fy += r.top;
+    GetMatrix(m, true);
+    m.TransformPoint(fx, fy);
+  }
+  CFWL_Widget* form1 = m_pWidgetMgr->GetSystemFormWidget(this);
+  if (!form1)
+    return;
+  if (!pWidget) {
+    form1->GetWidgetRect(r);
+    fx += r.left;
+    fy += r.top;
+    return;
+  }
+  CFWL_Widget* form2 = m_pWidgetMgr->GetSystemFormWidget(pWidget);
+  if (!form2)
+    return;
+  if (form1 != form2) {
+    form1->GetWidgetRect(r);
+    fx += r.left;
+    fy += r.top;
+    form2->GetWidgetRect(r);
+    fx -= r.left;
+    fy -= r.top;
+  }
+  parent = pWidget->GetParent();
+  if (parent) {
+    pWidget->GetMatrix(m, true);
+    CFX_Matrix m1;
+    m1.SetIdentity();
+    m1.SetReverse(m);
+    m1.TransformPoint(fx, fy);
+    pWidget->GetWidgetRect(r);
+    fx -= r.left;
+    fy -= r.top;
+  }
+}
+
+void CFWL_Widget::GetMatrix(CFX_Matrix& matrix, bool bGlobal) {
+  if (!m_pProperties)
+    return;
+  if (!bGlobal) {
+    matrix.SetIdentity();
+    return;
+  }
+
+  CFWL_Widget* parent = GetParent();
+  CFX_ArrayTemplate<CFWL_Widget*> parents;
+  while (parent) {
+    parents.Add(parent);
+    parent = parent->GetParent();
+  }
+  matrix.SetIdentity();
+  CFX_Matrix ctmOnParent;
+  CFX_RectF rect;
+  int32_t count = parents.GetSize();
+  for (int32_t i = count - 2; i >= 0; i--) {
+    parent = parents.GetAt(i);
+    parent->GetMatrix(ctmOnParent, false);
+    parent->GetWidgetRect(rect);
+    matrix.Concat(ctmOnParent, true);
+    matrix.Translate(rect.left, rect.top, true);
+  }
+  CFX_Matrix m;
+  m.SetIdentity();
+  matrix.Concat(m, true);
+  parents.RemoveAll();
+}
+
+IFWL_ThemeProvider* CFWL_Widget::GetThemeProvider() const {
+  return m_pProperties->m_pThemeProvider;
+}
+
+void CFWL_Widget::SetThemeProvider(IFWL_ThemeProvider* pThemeProvider) {
+  m_pProperties->m_pThemeProvider = pThemeProvider;
+}
+
+bool CFWL_Widget::IsEnabled() const {
+  return (m_pProperties->m_dwStates & FWL_WGTSTATE_Disabled) == 0;
+}
+
+bool CFWL_Widget::IsActive() const {
+  return (m_pProperties->m_dwStates & FWL_WGTSTATE_Deactivated) == 0;
+}
+
+bool CFWL_Widget::HasBorder() const {
+  return !!(m_pProperties->m_dwStyles & FWL_WGTSTYLE_Border);
+}
+
+bool CFWL_Widget::HasEdge() const {
+  return !!(m_pProperties->m_dwStyles & FWL_WGTSTYLE_EdgeMask);
+}
+
+bool CFWL_Widget::IsVisible() const {
+  return (m_pProperties->m_dwStates & FWL_WGTSTATE_Invisible) == 0;
+}
+
+bool CFWL_Widget::IsOverLapper() const {
+  return (m_pProperties->m_dwStyles & FWL_WGTSTYLE_WindowTypeMask) ==
+         FWL_WGTSTYLE_OverLapper;
+}
+
+bool CFWL_Widget::IsPopup() const {
+  return !!(m_pProperties->m_dwStyles & FWL_WGTSTYLE_Popup);
+}
+
+bool CFWL_Widget::IsChild() const {
+  return !!(m_pProperties->m_dwStyles & FWL_WGTSTYLE_Child);
+}
+
+bool CFWL_Widget::IsOffscreen() const {
+  return !!(m_pProperties->m_dwStyles & FWL_WGTSTYLE_Offscreen);
+}
+
+void CFWL_Widget::GetEdgeRect(CFX_RectF& rtEdge) {
+  rtEdge = m_pProperties->m_rtWidget;
+  rtEdge.left = rtEdge.top = 0;
+  if (HasBorder()) {
+    FX_FLOAT fCX = GetBorderSize();
+    FX_FLOAT fCY = GetBorderSize(false);
+    rtEdge.Deflate(fCX, fCY);
+  }
+}
+
+FX_FLOAT CFWL_Widget::GetBorderSize(bool bCX) {
+  FX_FLOAT* pfBorder = static_cast<FX_FLOAT*>(GetThemeCapacity(
+      bCX ? CFWL_WidgetCapacity::CXBorder : CFWL_WidgetCapacity::CYBorder));
+  if (!pfBorder)
+    return 0;
+  return *pfBorder;
+}
+
+FX_FLOAT CFWL_Widget::GetEdgeWidth() {
+  CFWL_WidgetCapacity dwCapacity = CFWL_WidgetCapacity::None;
+  switch (m_pProperties->m_dwStyles & FWL_WGTSTYLE_EdgeMask) {
+    case FWL_WGTSTYLE_EdgeFlat: {
+      dwCapacity = CFWL_WidgetCapacity::EdgeFlat;
+      break;
+    }
+    case FWL_WGTSTYLE_EdgeRaised: {
+      dwCapacity = CFWL_WidgetCapacity::EdgeRaised;
+      break;
+    }
+    case FWL_WGTSTYLE_EdgeSunken: {
+      dwCapacity = CFWL_WidgetCapacity::EdgeSunken;
+      break;
+    }
+  }
+  if (dwCapacity != CFWL_WidgetCapacity::None) {
+    FX_FLOAT* fRet = static_cast<FX_FLOAT*>(GetThemeCapacity(dwCapacity));
+    return fRet ? *fRet : 0;
+  }
+  return 0;
+}
+
+void CFWL_Widget::GetRelativeRect(CFX_RectF& rect) {
+  rect = m_pProperties->m_rtWidget;
+  rect.left = rect.top = 0;
+}
+
+void* CFWL_Widget::GetThemeCapacity(CFWL_WidgetCapacity dwCapacity) {
+  IFWL_ThemeProvider* pTheme = GetAvailableTheme();
+  if (!pTheme)
+    return nullptr;
+
+  CFWL_ThemePart part;
+  part.m_pWidget = this;
+  return pTheme->GetCapacity(&part, dwCapacity);
+}
+
+IFWL_ThemeProvider* CFWL_Widget::GetAvailableTheme() {
+  if (m_pProperties->m_pThemeProvider)
+    return m_pProperties->m_pThemeProvider;
+
+  CFWL_Widget* pUp = this;
+  do {
+    pUp = (pUp->GetStyles() & FWL_WGTSTYLE_Popup)
+              ? m_pWidgetMgr->GetOwnerWidget(pUp)
+              : m_pWidgetMgr->GetParentWidget(pUp);
+    if (pUp) {
+      IFWL_ThemeProvider* pRet = pUp->GetThemeProvider();
+      if (pRet)
+        return pRet;
+    }
+  } while (pUp);
+  return nullptr;
+}
+
+CFWL_Widget* CFWL_Widget::GetRootOuter() {
+  CFWL_Widget* pRet = m_pOuter;
+  if (!pRet)
+    return nullptr;
+
+  while (CFWL_Widget* pOuter = pRet->GetOuter())
+    pRet = pOuter;
+  return pRet;
+}
+
+CFX_SizeF CFWL_Widget::CalcTextSize(const CFX_WideString& wsText,
+                                    IFWL_ThemeProvider* pTheme,
+                                    bool bMultiLine,
+                                    int32_t iLineWidth) {
+  if (!pTheme)
+    return CFX_SizeF();
+
+  CFWL_ThemeText calPart;
+  calPart.m_pWidget = this;
+  calPart.m_wsText = wsText;
+  calPart.m_dwTTOStyles =
+      bMultiLine ? FDE_TTOSTYLE_LineWrap : FDE_TTOSTYLE_SingleLine;
+  calPart.m_iTTOAlign = FDE_TTOALIGNMENT_TopLeft;
+  CFX_RectF rect;
+  FX_FLOAT fWidth = bMultiLine
+                        ? (iLineWidth > 0 ? (FX_FLOAT)iLineWidth
+                                          : FWL_WGT_CalcMultiLineDefWidth)
+                        : FWL_WGT_CalcWidth;
+  rect.Set(0, 0, fWidth, FWL_WGT_CalcHeight);
+  pTheme->CalcTextRect(&calPart, rect);
+  return CFX_SizeF(rect.width, rect.height);
+}
+
+void CFWL_Widget::CalcTextRect(const CFX_WideString& wsText,
+                               IFWL_ThemeProvider* pTheme,
+                               uint32_t dwTTOStyles,
+                               int32_t iTTOAlign,
+                               CFX_RectF& rect) {
+  CFWL_ThemeText calPart;
+  calPart.m_pWidget = this;
+  calPart.m_wsText = wsText;
+  calPart.m_dwTTOStyles = dwTTOStyles;
+  calPart.m_iTTOAlign = iTTOAlign;
+  pTheme->CalcTextRect(&calPart, rect);
+}
+
+void CFWL_Widget::SetFocus(bool bFocus) {
+  if (m_pWidgetMgr->IsFormDisabled())
+    return;
+
+  const CFWL_App* pApp = GetOwnerApp();
+  if (!pApp)
+    return;
+
+  CFWL_NoteDriver* pDriver =
+      static_cast<CFWL_NoteDriver*>(pApp->GetNoteDriver());
+  if (!pDriver)
+    return;
+
+  CFWL_Widget* curFocus = pDriver->GetFocus();
+  if (bFocus && curFocus != this)
+    pDriver->SetFocus(this);
+  else if (!bFocus && curFocus == this)
+    pDriver->SetFocus(nullptr);
+}
+
+void CFWL_Widget::SetGrab(bool bSet) {
+  const CFWL_App* pApp = GetOwnerApp();
+  if (!pApp)
+    return;
+
+  CFWL_NoteDriver* pDriver =
+      static_cast<CFWL_NoteDriver*>(pApp->GetNoteDriver());
+  pDriver->SetGrab(this, bSet);
+}
+
+void CFWL_Widget::GetPopupPos(FX_FLOAT fMinHeight,
+                              FX_FLOAT fMaxHeight,
+                              const CFX_RectF& rtAnchor,
+                              CFX_RectF& rtPopup) {
+  if (GetClassID() == FWL_Type::ComboBox) {
+    if (m_pWidgetMgr->IsFormDisabled()) {
+      m_pWidgetMgr->GetAdapterPopupPos(this, fMinHeight, fMaxHeight, rtAnchor,
+                                       rtPopup);
+      return;
+    }
+    GetPopupPosComboBox(fMinHeight, fMaxHeight, rtAnchor, rtPopup);
+    return;
+  }
+  if (GetClassID() == FWL_Type::DateTimePicker &&
+      m_pWidgetMgr->IsFormDisabled()) {
+    m_pWidgetMgr->GetAdapterPopupPos(this, fMinHeight, fMaxHeight, rtAnchor,
+                                     rtPopup);
+    return;
+  }
+  GetPopupPosGeneral(fMinHeight, fMaxHeight, rtAnchor, rtPopup);
+}
+
+bool CFWL_Widget::GetPopupPosMenu(FX_FLOAT fMinHeight,
+                                  FX_FLOAT fMaxHeight,
+                                  const CFX_RectF& rtAnchor,
+                                  CFX_RectF& rtPopup) {
+  FX_FLOAT fx = 0;
+  FX_FLOAT fy = 0;
+
+  if (GetStylesEx() & FWL_STYLEEXT_MNU_Vert) {
+    bool bLeft = m_pProperties->m_rtWidget.left < 0;
+    FX_FLOAT fRight = rtAnchor.right() + rtPopup.width;
+    TransformTo(nullptr, fx, fy);
+    if (fRight + fx > 0.0f || bLeft) {
+      rtPopup.Set(rtAnchor.left - rtPopup.width, rtAnchor.top, rtPopup.width,
+                  rtPopup.height);
+    } else {
+      rtPopup.Set(rtAnchor.right(), rtAnchor.top, rtPopup.width,
+                  rtPopup.height);
+    }
+  } else {
+    FX_FLOAT fBottom = rtAnchor.bottom() + rtPopup.height;
+    TransformTo(nullptr, fx, fy);
+    if (fBottom + fy > 0.0f) {
+      rtPopup.Set(rtAnchor.left, rtAnchor.top - rtPopup.height, rtPopup.width,
+                  rtPopup.height);
+    } else {
+      rtPopup.Set(rtAnchor.left, rtAnchor.bottom(), rtPopup.width,
+                  rtPopup.height);
+    }
+  }
+  rtPopup.Offset(fx, fy);
+  return true;
+}
+
+bool CFWL_Widget::GetPopupPosComboBox(FX_FLOAT fMinHeight,
+                                      FX_FLOAT fMaxHeight,
+                                      const CFX_RectF& rtAnchor,
+                                      CFX_RectF& rtPopup) {
+  FX_FLOAT fx = 0;
+  FX_FLOAT fy = 0;
+
+  FX_FLOAT fPopHeight = rtPopup.height;
+  if (rtPopup.height > fMaxHeight)
+    fPopHeight = fMaxHeight;
+  else if (rtPopup.height < fMinHeight)
+    fPopHeight = fMinHeight;
+
+  FX_FLOAT fWidth = std::max(rtAnchor.width, rtPopup.width);
+  FX_FLOAT fBottom = rtAnchor.bottom() + fPopHeight;
+  TransformTo(nullptr, fx, fy);
+  if (fBottom + fy > 0.0f)
+    rtPopup.Set(rtAnchor.left, rtAnchor.top - fPopHeight, fWidth, fPopHeight);
+  else
+    rtPopup.Set(rtAnchor.left, rtAnchor.bottom(), fWidth, fPopHeight);
+
+  rtPopup.Offset(fx, fy);
+  return true;
+}
+
+bool CFWL_Widget::GetPopupPosGeneral(FX_FLOAT fMinHeight,
+                                     FX_FLOAT fMaxHeight,
+                                     const CFX_RectF& rtAnchor,
+                                     CFX_RectF& rtPopup) {
+  FX_FLOAT fx = 0;
+  FX_FLOAT fy = 0;
+
+  TransformTo(nullptr, fx, fy);
+  if (rtAnchor.bottom() + fy > 0.0f) {
+    rtPopup.Set(rtAnchor.left, rtAnchor.top - rtPopup.height, rtPopup.width,
+                rtPopup.height);
+  } else {
+    rtPopup.Set(rtAnchor.left, rtAnchor.bottom(), rtPopup.width,
+                rtPopup.height);
+  }
+  rtPopup.Offset(fx, fy);
+  return true;
+}
+
+void CFWL_Widget::RegisterEventTarget(CFWL_Widget* pEventSource) {
+  const CFWL_App* pApp = GetOwnerApp();
+  if (!pApp)
+    return;
+
+  CFWL_NoteDriver* pNoteDriver = pApp->GetNoteDriver();
+  if (!pNoteDriver)
+    return;
+
+  pNoteDriver->RegisterEventTarget(this, pEventSource);
+}
+
+void CFWL_Widget::UnregisterEventTarget() {
+  const CFWL_App* pApp = GetOwnerApp();
+  if (!pApp)
+    return;
+
+  CFWL_NoteDriver* pNoteDriver = pApp->GetNoteDriver();
+  if (!pNoteDriver)
+    return;
+
+  pNoteDriver->UnregisterEventTarget(this);
+}
+
+void CFWL_Widget::DispatchKeyEvent(CFWL_MsgKey* pNote) {
+  if (!pNote)
+    return;
+
+  auto pEvent = pdfium::MakeUnique<CFWL_EvtKey>();
+  pEvent->m_pSrcTarget = this;
+  pEvent->m_dwCmd = pNote->m_dwCmd;
+  pEvent->m_dwKeyCode = pNote->m_dwKeyCode;
+  pEvent->m_dwFlags = pNote->m_dwFlags;
+  DispatchEvent(pEvent.get());
+}
+
+void CFWL_Widget::DispatchEvent(CFWL_Event* pEvent) {
+  if (m_pOuter) {
+    m_pOuter->GetDelegate()->OnProcessEvent(pEvent);
+    return;
+  }
+  const CFWL_App* pApp = GetOwnerApp();
+  if (!pApp)
+    return;
+
+  CFWL_NoteDriver* pNoteDriver = pApp->GetNoteDriver();
+  if (!pNoteDriver)
+    return;
+  pNoteDriver->SendEvent(pEvent);
+}
+
+void CFWL_Widget::Repaint(const CFX_RectF* pRect) {
+  if (pRect) {
+    m_pWidgetMgr->RepaintWidget(this, pRect);
+    return;
+  }
+  CFX_RectF rect;
+  rect = m_pProperties->m_rtWidget;
+  rect.left = rect.top = 0;
+  m_pWidgetMgr->RepaintWidget(this, &rect);
+}
+
+void CFWL_Widget::DrawBackground(CFX_Graphics* pGraphics,
+                                 CFWL_Part iPartBk,
+                                 IFWL_ThemeProvider* pTheme,
+                                 const CFX_Matrix* pMatrix) {
+  CFX_RectF rtRelative;
+  GetRelativeRect(rtRelative);
+  CFWL_ThemeBackground param;
+  param.m_pWidget = this;
+  param.m_iPart = iPartBk;
+  param.m_pGraphics = pGraphics;
+  if (pMatrix)
+    param.m_matrix.Concat(*pMatrix, true);
+  param.m_rtPart = rtRelative;
+  pTheme->DrawBackground(&param);
+}
+
+void CFWL_Widget::DrawBorder(CFX_Graphics* pGraphics,
+                             CFWL_Part iPartBorder,
+                             IFWL_ThemeProvider* pTheme,
                              const CFX_Matrix* pMatrix) {
-  if (m_pIface)
-    m_pIface->DrawWidget(pGraphics, pMatrix);
-}
-
-IFWL_WidgetDelegate* CFWL_Widget::GetDelegate() const {
-  return m_pIface ? m_pIface->GetDelegate() : nullptr;
-}
-
-void CFWL_Widget::SetDelegate(IFWL_WidgetDelegate* pDelegate) {
-  if (m_pIface)
-    m_pIface->SetDelegate(pDelegate);
-}
+  CFX_RectF rtRelative;
+  GetRelativeRect(rtRelative);
+  CFWL_ThemeBackground param;
+  param.m_pWidget = this;
+  param.m_iPart = iPartBorder;
+  param.m_pGraphics = pGraphics;
+  if (pMatrix)
+    param.m_matrix.Concat(*pMatrix, true);
+  param.m_rtPart = rtRelative;
+  pTheme->DrawBackground(&param);
+}
+
+void CFWL_Widget::DrawEdge(CFX_Graphics* pGraphics,
+                           CFWL_Part iPartEdge,
+                           IFWL_ThemeProvider* pTheme,
+                           const CFX_Matrix* pMatrix) {
+  CFX_RectF rtEdge;
+  GetEdgeRect(rtEdge);
+  CFWL_ThemeBackground param;
+  param.m_pWidget = this;
+  param.m_iPart = iPartEdge;
+  param.m_pGraphics = pGraphics;
+  if (pMatrix)
+    param.m_matrix.Concat(*pMatrix, true);
+  param.m_rtPart = rtEdge;
+  pTheme->DrawBackground(&param);
+}
+
+void CFWL_Widget::NotifyDriver() {
+  const CFWL_App* pApp = GetOwnerApp();
+  if (!pApp)
+    return;
+
+  CFWL_NoteDriver* pDriver =
+      static_cast<CFWL_NoteDriver*>(pApp->GetNoteDriver());
+  if (!pDriver)
+    return;
+
+  pDriver->NotifyTargetDestroy(this);
+}
+
+CFX_SizeF CFWL_Widget::GetOffsetFromParent(CFWL_Widget* pParent) {
+  if (pParent == this)
+    return CFX_SizeF();
+
+  CFWL_WidgetMgr* pWidgetMgr = GetOwnerApp()->GetWidgetMgr();
+  if (!pWidgetMgr)
+    return CFX_SizeF();
+
+  CFX_SizeF szRet(m_pProperties->m_rtWidget.left,
+                  m_pProperties->m_rtWidget.top);
+
+  CFWL_Widget* pDstWidget = GetParent();
+  while (pDstWidget && pDstWidget != pParent) {
+    CFX_RectF rtDst;
+    pDstWidget->GetWidgetRect(rtDst);
+    szRet += CFX_SizeF(rtDst.left, rtDst.top);
+    pDstWidget = pWidgetMgr->GetParentWidget(pDstWidget);
+  }
+  return szRet;
+}
+
+bool CFWL_Widget::IsParent(CFWL_Widget* pParent) {
+  CFWL_Widget* pUpWidget = GetParent();
+  while (pUpWidget) {
+    if (pUpWidget == pParent)
+      return true;
+    pUpWidget = pUpWidget->GetParent();
+  }
+  return false;
+}
+
+void CFWL_Widget::OnProcessMessage(CFWL_Message* pMessage) {
+  if (!pMessage->m_pDstTarget)
+    return;
+
+  CFWL_Widget* pWidget = pMessage->m_pDstTarget;
+  CFWL_MessageType dwMsgCode = pMessage->GetClassID();
+  switch (dwMsgCode) {
+    case CFWL_MessageType::Mouse: {
+      CFWL_MsgMouse* pMsgMouse = static_cast<CFWL_MsgMouse*>(pMessage);
+      CFWL_EvtMouse evt;
+      evt.m_pSrcTarget = pWidget;
+      evt.m_pDstTarget = pWidget;
+      evt.m_dwCmd = pMsgMouse->m_dwCmd;
+      evt.m_dwFlags = pMsgMouse->m_dwFlags;
+      evt.m_fx = pMsgMouse->m_fx;
+      evt.m_fy = pMsgMouse->m_fy;
+      pWidget->DispatchEvent(&evt);
+      break;
+    }
+    case CFWL_MessageType::MouseWheel: {
+      CFWL_MsgMouseWheel* pMsgMouseWheel =
+          static_cast<CFWL_MsgMouseWheel*>(pMessage);
+      CFWL_EvtMouseWheel evt;
+      evt.m_pSrcTarget = pWidget;
+      evt.m_pDstTarget = pWidget;
+      evt.m_dwFlags = pMsgMouseWheel->m_dwFlags;
+      evt.m_fDeltaX = pMsgMouseWheel->m_fDeltaX;
+      evt.m_fDeltaY = pMsgMouseWheel->m_fDeltaY;
+      evt.m_fx = pMsgMouseWheel->m_fx;
+      evt.m_fy = pMsgMouseWheel->m_fy;
+      pWidget->DispatchEvent(&evt);
+      break;
+    }
+    case CFWL_MessageType::Key: {
+      CFWL_MsgKey* pMsgKey = static_cast<CFWL_MsgKey*>(pMessage);
+      CFWL_EvtKey evt;
+      evt.m_pSrcTarget = pWidget;
+      evt.m_pDstTarget = pWidget;
+      evt.m_dwKeyCode = pMsgKey->m_dwKeyCode;
+      evt.m_dwFlags = pMsgKey->m_dwFlags;
+      evt.m_dwCmd = pMsgKey->m_dwCmd;
+      pWidget->DispatchEvent(&evt);
+      break;
+    }
+    case CFWL_MessageType::SetFocus: {
+      CFWL_MsgSetFocus* pMsgSetFocus = static_cast<CFWL_MsgSetFocus*>(pMessage);
+      CFWL_EvtSetFocus evt;
+      evt.m_pSrcTarget = pMsgSetFocus->m_pDstTarget;
+      evt.m_pDstTarget = pMsgSetFocus->m_pDstTarget;
+      evt.m_pSetFocus = pWidget;
+      pWidget->DispatchEvent(&evt);
+      break;
+    }
+    case CFWL_MessageType::KillFocus: {
+      CFWL_MsgKillFocus* pMsgKillFocus =
+          static_cast<CFWL_MsgKillFocus*>(pMessage);
+      CFWL_EvtKillFocus evt;
+      evt.m_pSrcTarget = pMsgKillFocus->m_pDstTarget;
+      evt.m_pDstTarget = pMsgKillFocus->m_pDstTarget;
+      evt.m_pKillFocus = pWidget;
+      pWidget->DispatchEvent(&evt);
+      break;
+    }
+    default:
+      break;
+  }
+}
+
+void CFWL_Widget::OnProcessEvent(CFWL_Event* pEvent) {}
+
+void CFWL_Widget::OnDrawWidget(CFX_Graphics* pGraphics,
+                               const CFX_Matrix* pMatrix) {}