Merge IFWL and CFWL classes.

xfa/fwl/core/cfwl_checkbox.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_checkbox.h"
 
+#include <algorithm>
 #include <memory>
 #include <utility>
 
 #include "third_party/base/ptr_util.h"
-#include "xfa/fwl/core/fwl_error.h"
+#include "xfa/fde/tto/fde_textout.h"
+#include "xfa/fwl/core/cfwl_app.h"
+#include "xfa/fwl/core/cfwl_evtcheckstatechanged.h"
+#include "xfa/fwl/core/cfwl_msgkey.h"
+#include "xfa/fwl/core/cfwl_msgmouse.h"
+#include "xfa/fwl/core/cfwl_notedriver.h"
+#include "xfa/fwl/core/cfwl_themebackground.h"
+#include "xfa/fwl/core/cfwl_themetext.h"
+#include "xfa/fwl/core/cfwl_widgetmgr.h"
+#include "xfa/fwl/core/ifwl_themeprovider.h"
+
+namespace {
+
+const int kCaptionMargin = 5;
+
+}  // namespace
 
 CFWL_CheckBox::CFWL_CheckBox(const CFWL_App* app)
-    : CFWL_Widget(app), m_fBoxHeight(16.0f) {}
+    : CFWL_Widget(app, pdfium::MakeUnique<CFWL_WidgetProperties>(), nullptr),
+      m_dwTTOStyles(FDE_TTOSTYLE_SingleLine),
+      m_iTTOAlign(FDE_TTOALIGNMENT_Center),
+      m_bBtnDown(false),
+      m_fBoxHeight(16.0f) {
+  m_rtClient.Reset();
+  m_rtBox.Reset();
+  m_rtCaption.Reset();
+  m_rtFocus.Reset();
+}
 
 CFWL_CheckBox::~CFWL_CheckBox() {}
 
-void CFWL_CheckBox::Initialize() {
-  ASSERT(!m_pIface);
-
-  auto iface = pdfium::MakeUnique<IFWL_CheckBox>(
-      m_pApp, pdfium::MakeUnique<CFWL_WidgetProperties>());
-  iface->SetDataProvider(this);
-  m_pIface = std::move(iface);
-
-  CFWL_Widget::Initialize();
+FWL_Type CFWL_CheckBox::GetClassID() const {
+  return FWL_Type::CheckBox;
 }
 
 void CFWL_CheckBox::SetBoxSize(FX_FLOAT fHeight) {
   m_fBoxHeight = fHeight;
 }
 
-FX_FLOAT CFWL_CheckBox::GetBoxSize(IFWL_Widget* pWidget) {
-  return m_fBoxHeight;
-}
+void CFWL_CheckBox::GetWidgetRect(CFX_RectF& rect, bool bAutoSize) {
+  if (!bAutoSize) {
+    rect = m_pProperties->m_rtWidget;
+    return;
+  }
+
+  rect.Set(0, 0, 0, 0);
+  if (!m_pProperties->m_pThemeProvider)
+    m_pProperties->m_pThemeProvider = GetAvailableTheme();
+  if (!m_pProperties->m_pThemeProvider)
+    return;
+
+  CFX_SizeF sz = CalcTextSize(
+      L"Check box", m_pProperties->m_pThemeProvider,
+      !!(m_pProperties->m_dwStyleExes & FWL_STYLEEXT_CKB_MultiLine));
+  rect.Set(0, 0, sz.x, sz.y);
+  rect.Inflate(kCaptionMargin, kCaptionMargin);
+
+  rect.width += m_fBoxHeight;
+  rect.height = std::max(rect.height, m_fBoxHeight);
+  CFWL_Widget::GetWidgetRect(rect, true);
+}
+
+void CFWL_CheckBox::Update() {
+  if (IsLocked())
+    return;
+  if (!m_pProperties->m_pThemeProvider)
+    m_pProperties->m_pThemeProvider = GetAvailableTheme();
+
+  UpdateTextOutStyles();
+  Layout();
+}
+
+void CFWL_CheckBox::DrawWidget(CFX_Graphics* pGraphics,
+                               const CFX_Matrix* pMatrix) {
+  if (!pGraphics)
+    return;
+  if (!m_pProperties->m_pThemeProvider)
+    return;
+
+  IFWL_ThemeProvider* pTheme = m_pProperties->m_pThemeProvider;
+  if (HasBorder()) {
+    DrawBorder(pGraphics, CFWL_Part::Border, m_pProperties->m_pThemeProvider,
+               pMatrix);
+  }
+  if (HasEdge())
+    DrawEdge(pGraphics, CFWL_Part::Edge, pTheme, pMatrix);
+
+  int32_t dwStates = GetPartStates();
+
+  CFWL_ThemeBackground param;
+  param.m_pWidget = this;
+  param.m_iPart = CFWL_Part::Background;
+  param.m_dwStates = dwStates;
+  param.m_pGraphics = pGraphics;
+  if (pMatrix)
+    param.m_matrix.Concat(*pMatrix);
+  param.m_rtPart = m_rtClient;
+  if (m_pProperties->m_dwStates & FWL_WGTSTATE_Focused)
+    param.m_pData = &m_rtFocus;
+  pTheme->DrawBackground(&param);
+
+  param.m_iPart = CFWL_Part::CheckBox;
+  param.m_rtPart = m_rtBox;
+  pTheme->DrawBackground(&param);
+
+  CFWL_ThemeText textParam;
+  textParam.m_pWidget = this;
+  textParam.m_iPart = CFWL_Part::Caption;
+  textParam.m_dwStates = dwStates;
+  textParam.m_pGraphics = pGraphics;
+  if (pMatrix)
+    textParam.m_matrix.Concat(*pMatrix);
+  textParam.m_rtPart = m_rtCaption;
+  textParam.m_wsText = L"Check box";
+  textParam.m_dwTTOStyles = m_dwTTOStyles;
+  textParam.m_iTTOAlign = m_iTTOAlign;
+  pTheme->DrawText(&textParam);
+}
+
+void CFWL_CheckBox::SetCheckState(int32_t iCheck) {
+  m_pProperties->m_dwStates &= ~FWL_STATE_CKB_CheckMask;
+  switch (iCheck) {
+    case 1:
+      m_pProperties->m_dwStates |= FWL_STATE_CKB_Checked;
+      break;
+    case 2:
+      if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_CKB_3State)
+        m_pProperties->m_dwStates |= FWL_STATE_CKB_Neutral;
+      break;
+    default:
+      break;
+  }
+  Repaint(&m_rtClient);
+}
+
+void CFWL_CheckBox::Layout() {
+  m_pProperties->m_rtWidget.width =
+      FXSYS_round(m_pProperties->m_rtWidget.width);
+  m_pProperties->m_rtWidget.height =
+      FXSYS_round(m_pProperties->m_rtWidget.height);
+  GetClientRect(m_rtClient);
+
+  FX_FLOAT fBoxTop = m_rtClient.top;
+  FX_FLOAT fClientBottom = m_rtClient.bottom();
+
+  switch (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_CKB_VLayoutMask) {
+    case FWL_STYLEEXT_CKB_Top:
+      break;
+    case FWL_STYLEEXT_CKB_Bottom: {
+      fBoxTop = fClientBottom - m_fBoxHeight;
+      break;
+    }
+    case FWL_STYLEEXT_CKB_VCenter:
+    default: {
+      fBoxTop = m_rtClient.top + (m_rtClient.height - m_fBoxHeight) / 2;
+      fBoxTop = FXSYS_floor(fBoxTop);
+      break;
+    }
+  }
+
+  FX_FLOAT fBoxLeft = m_rtClient.left;
+  FX_FLOAT fTextLeft = 0.0;
+  FX_FLOAT fTextRight = 0.0;
+  FX_FLOAT fClientRight = m_rtClient.right();
+  if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_CKB_LeftText) {
+    fBoxLeft = fClientRight - m_fBoxHeight;
+    fTextLeft = m_rtClient.left;
+    fTextRight = fBoxLeft;
+  } else {
+    fTextLeft = fBoxLeft + m_fBoxHeight;
+    fTextRight = fClientRight;
+  }
+  m_rtBox.Set(fBoxLeft, fBoxTop, m_fBoxHeight, m_fBoxHeight);
+  m_rtCaption.Set(fTextLeft, m_rtClient.top, fTextRight - fTextLeft,
+                  m_rtClient.height);
+  m_rtCaption.Inflate(-kCaptionMargin, -kCaptionMargin);
+
+  CFX_RectF rtFocus;
+  rtFocus.Set(m_rtCaption.left, m_rtCaption.top, m_rtCaption.width,
+              m_rtCaption.height);
+
+  CalcTextRect(L"Check box", m_pProperties->m_pThemeProvider, m_dwTTOStyles,
+               m_iTTOAlign, rtFocus);
+  if ((m_pProperties->m_dwStyleExes & FWL_STYLEEXT_CKB_MultiLine) == 0) {
+    FX_FLOAT fWidth = std::max(m_rtCaption.width, rtFocus.width);
+    FX_FLOAT fHeight = std::min(m_rtCaption.height, rtFocus.height);
+    FX_FLOAT fLeft = m_rtCaption.left;
+    FX_FLOAT fTop = m_rtCaption.top;
+    if ((m_pProperties->m_dwStyleExes & FWL_STYLEEXT_CKB_HLayoutMask) ==
+        FWL_STYLEEXT_CKB_Center) {
+      fLeft = m_rtCaption.left + (m_rtCaption.width - fWidth) / 2;
+    } else if ((m_pProperties->m_dwStyleExes & FWL_STYLEEXT_CKB_HLayoutMask) ==
+               FWL_STYLEEXT_CKB_Right) {
+      fLeft = m_rtCaption.right() - fWidth;
+    }
+    if ((m_pProperties->m_dwStyleExes & FWL_STYLEEXT_CKB_VLayoutMask) ==
+        FWL_STYLEEXT_CKB_VCenter) {
+      fTop = m_rtCaption.top + (m_rtCaption.height - fHeight) / 2;
+    } else if ((m_pProperties->m_dwStyleExes & FWL_STYLEEXT_CKB_VLayoutMask) ==
+               FWL_STYLEEXT_CKB_Bottom) {
+      fTop = m_rtCaption.bottom() - fHeight;
+    }
+    m_rtFocus.Set(fLeft, fTop, fWidth, fHeight);
+  } else {
+    m_rtFocus.Set(rtFocus.left, rtFocus.top, rtFocus.width, rtFocus.height);
+  }
+  m_rtFocus.Inflate(1, 1);
+}
+
+uint32_t CFWL_CheckBox::GetPartStates() const {
+  int32_t dwStates = CFWL_PartState_Normal;
+  if ((m_pProperties->m_dwStates & FWL_STATE_CKB_CheckMask) ==
+      FWL_STATE_CKB_Neutral) {
+    dwStates = CFWL_PartState_Neutral;
+  } else if ((m_pProperties->m_dwStates & FWL_STATE_CKB_CheckMask) ==
+             FWL_STATE_CKB_Checked) {
+    dwStates = CFWL_PartState_Checked;
+  }
+  if (m_pProperties->m_dwStates & FWL_WGTSTATE_Disabled)
+    dwStates |= CFWL_PartState_Disabled;
+  else if (m_pProperties->m_dwStates & FWL_STATE_CKB_Hovered)
+    dwStates |= CFWL_PartState_Hovered;
+  else if (m_pProperties->m_dwStates & FWL_STATE_CKB_Pressed)
+    dwStates |= CFWL_PartState_Pressed;
+  else
+    dwStates |= CFWL_PartState_Normal;
+  if (m_pProperties->m_dwStates & FWL_WGTSTATE_Focused)
+    dwStates |= CFWL_PartState_Focused;
+  return dwStates;
+}
+
+void CFWL_CheckBox::UpdateTextOutStyles() {
+  switch (m_pProperties->m_dwStyleExes &
+          (FWL_STYLEEXT_CKB_HLayoutMask | FWL_STYLEEXT_CKB_VLayoutMask)) {
+    case FWL_STYLEEXT_CKB_Left | FWL_STYLEEXT_CKB_Top: {
+      m_iTTOAlign = FDE_TTOALIGNMENT_TopLeft;
+      break;
+    }
+    case FWL_STYLEEXT_CKB_Center | FWL_STYLEEXT_CKB_Top: {
+      m_iTTOAlign = FDE_TTOALIGNMENT_TopCenter;
+      break;
+    }
+    case FWL_STYLEEXT_CKB_Right | FWL_STYLEEXT_CKB_Top: {
+      m_iTTOAlign = FDE_TTOALIGNMENT_TopRight;
+      break;
+    }
+    case FWL_STYLEEXT_CKB_Left | FWL_STYLEEXT_CKB_VCenter: {
+      m_iTTOAlign = FDE_TTOALIGNMENT_CenterLeft;
+      break;
+    }
+    case FWL_STYLEEXT_CKB_Right | FWL_STYLEEXT_CKB_VCenter: {
+      m_iTTOAlign = FDE_TTOALIGNMENT_CenterRight;
+      break;
+    }
+    case FWL_STYLEEXT_CKB_Left | FWL_STYLEEXT_CKB_Bottom: {
+      m_iTTOAlign = FDE_TTOALIGNMENT_BottomLeft;
+      break;
+    }
+    case FWL_STYLEEXT_CKB_Center | FWL_STYLEEXT_CKB_Bottom: {
+      m_iTTOAlign = FDE_TTOALIGNMENT_BottomCenter;
+      break;
+    }
+    case FWL_STYLEEXT_CKB_Right | FWL_STYLEEXT_CKB_Bottom: {
+      m_iTTOAlign = FDE_TTOALIGNMENT_BottomRight;
+      break;
+    }
+    case FWL_STYLEEXT_CKB_Center | FWL_STYLEEXT_CKB_VCenter:
+    default: {
+      m_iTTOAlign = FDE_TTOALIGNMENT_Center;
+      break;
+    }
+  }
+  m_dwTTOStyles = 0;
+  if (m_pProperties->m_dwStyleExes & FWL_WGTSTYLE_RTLReading)
+    m_dwTTOStyles |= FDE_TTOSTYLE_RTL;
+  if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_CKB_MultiLine)
+    m_dwTTOStyles |= FDE_TTOSTYLE_LineWrap;
+  else
+    m_dwTTOStyles |= FDE_TTOSTYLE_SingleLine;
+}
+
+void CFWL_CheckBox::NextStates() {
+  uint32_t dwFirststate = m_pProperties->m_dwStates;
+  if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_CKB_RadioButton) {
+    if ((m_pProperties->m_dwStates & FWL_STATE_CKB_CheckMask) ==
+        FWL_STATE_CKB_Unchecked) {
+      CFWL_WidgetMgr* pWidgetMgr = GetOwnerApp()->GetWidgetMgr();
+      if (!pWidgetMgr->IsFormDisabled()) {
+        CFX_ArrayTemplate<CFWL_Widget*> radioarr;
+        pWidgetMgr->GetSameGroupRadioButton(this, radioarr);
+        CFWL_CheckBox* pCheckBox = nullptr;
+        int32_t iCount = radioarr.GetSize();
+        for (int32_t i = 0; i < iCount; i++) {
+          pCheckBox = static_cast<CFWL_CheckBox*>(radioarr[i]);
+          if (pCheckBox != this &&
+              pCheckBox->GetStates() & FWL_STATE_CKB_Checked) {
+            pCheckBox->SetCheckState(0);
+            CFX_RectF rt;
+            pCheckBox->GetWidgetRect(rt);
+            rt.left = rt.top = 0;
+            m_pWidgetMgr->RepaintWidget(pCheckBox, &rt);
+            break;
+          }
+        }
+      }
+      m_pProperties->m_dwStates |= FWL_STATE_CKB_Checked;
+    }
+  } else {
+    if ((m_pProperties->m_dwStates & FWL_STATE_CKB_CheckMask) ==
+        FWL_STATE_CKB_Neutral) {
+      m_pProperties->m_dwStates &= ~FWL_STATE_CKB_CheckMask;
+      if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_CKB_3State)
+        m_pProperties->m_dwStates |= FWL_STATE_CKB_Checked;
+    } else if ((m_pProperties->m_dwStates & FWL_STATE_CKB_CheckMask) ==
+               FWL_STATE_CKB_Checked) {
+      m_pProperties->m_dwStates &= ~FWL_STATE_CKB_CheckMask;
+    } else {
+      if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_CKB_3State)
+        m_pProperties->m_dwStates |= FWL_STATE_CKB_Neutral;
+      else
+        m_pProperties->m_dwStates |= FWL_STATE_CKB_Checked;
+    }
+  }
+
+  Repaint(&m_rtClient);
+  if (dwFirststate == m_pProperties->m_dwStates)
+    return;
+
+  CFWL_EvtCheckStateChanged wmCheckBoxState;
+  wmCheckBoxState.m_pSrcTarget = this;
+  DispatchEvent(&wmCheckBoxState);
+}
+
+void CFWL_CheckBox::OnProcessMessage(CFWL_Message* pMessage) {
+  if (!pMessage)
+    return;
+
+  switch (pMessage->GetClassID()) {
+    case CFWL_MessageType::SetFocus:
+      OnFocusChanged(true);
+      break;
+    case CFWL_MessageType::KillFocus:
+      OnFocusChanged(false);
+      break;
+    case CFWL_MessageType::Mouse: {
+      CFWL_MsgMouse* pMsg = static_cast<CFWL_MsgMouse*>(pMessage);
+      switch (pMsg->m_dwCmd) {
+        case FWL_MouseCommand::LeftButtonDown:
+          OnLButtonDown();
+          break;
+        case FWL_MouseCommand::LeftButtonUp:
+          OnLButtonUp(pMsg);
+          break;
+        case FWL_MouseCommand::Move:
+          OnMouseMove(pMsg);
+          break;
+        case FWL_MouseCommand::Leave:
+          OnMouseLeave();
+          break;
+        default:
+          break;
+      }
+      break;
+    }
+    case CFWL_MessageType::Key: {
+      CFWL_MsgKey* pKey = static_cast<CFWL_MsgKey*>(pMessage);
+      if (pKey->m_dwCmd == FWL_KeyCommand::KeyDown)
+        OnKeyDown(pKey);
+      break;
+    }
+    default:
+      break;
+  }
+
+  CFWL_Widget::OnProcessMessage(pMessage);
+}
+
+void CFWL_CheckBox::OnDrawWidget(CFX_Graphics* pGraphics,
+                                 const CFX_Matrix* pMatrix) {
+  DrawWidget(pGraphics, pMatrix);
+}
+
+void CFWL_CheckBox::OnFocusChanged(bool bSet) {
+  if (bSet)
+    m_pProperties->m_dwStates |= FWL_WGTSTATE_Focused;
+  else
+    m_pProperties->m_dwStates &= ~FWL_WGTSTATE_Focused;
+
+  Repaint(&m_rtClient);
+}
+
+void CFWL_CheckBox::OnLButtonDown() {
+  if (m_pProperties->m_dwStates & FWL_WGTSTATE_Disabled)
+    return;
+  if ((m_pProperties->m_dwStates & FWL_WGTSTATE_Focused) == 0)
+    SetFocus(true);
+
+  m_bBtnDown = true;
+  m_pProperties->m_dwStates &= ~FWL_STATE_CKB_Hovered;
+  m_pProperties->m_dwStates |= FWL_STATE_CKB_Pressed;
+  Repaint(&m_rtClient);
+}
+
+void CFWL_CheckBox::OnLButtonUp(CFWL_MsgMouse* pMsg) {
+  if (!m_bBtnDown)
+    return;
+
+  m_bBtnDown = false;
+  if (!m_rtClient.Contains(pMsg->m_fx, pMsg->m_fy))
+    return;
+
+  m_pProperties->m_dwStates |= FWL_STATE_CKB_Hovered;
+  m_pProperties->m_dwStates &= ~FWL_STATE_CKB_Pressed;
+  NextStates();
+}
+
+void CFWL_CheckBox::OnMouseMove(CFWL_MsgMouse* pMsg) {
+  if (m_pProperties->m_dwStates & FWL_WGTSTATE_Disabled)
+    return;
+
+  bool bRepaint = false;
+  if (m_bBtnDown) {
+    if (m_rtClient.Contains(pMsg->m_fx, pMsg->m_fy)) {
+      if ((m_pProperties->m_dwStates & FWL_STATE_CKB_Pressed) == 0) {
+        bRepaint = true;
+        m_pProperties->m_dwStates |= FWL_STATE_CKB_Pressed;
+      }
+      if ((m_pProperties->m_dwStates & FWL_STATE_CKB_Hovered)) {
+        bRepaint = true;
+        m_pProperties->m_dwStates &= ~FWL_STATE_CKB_Hovered;
+      }
+    } else {
+      if (m_pProperties->m_dwStates & FWL_STATE_CKB_Pressed) {
+        bRepaint = true;
+        m_pProperties->m_dwStates &= ~FWL_STATE_CKB_Pressed;
+      }
+      if ((m_pProperties->m_dwStates & FWL_STATE_CKB_Hovered) == 0) {
+        bRepaint = true;
+        m_pProperties->m_dwStates |= FWL_STATE_CKB_Hovered;
+      }
+    }
+  } else {
+    if (m_rtClient.Contains(pMsg->m_fx, pMsg->m_fy)) {
+      if ((m_pProperties->m_dwStates & FWL_STATE_CKB_Hovered) == 0) {
+        bRepaint = true;
+        m_pProperties->m_dwStates |= FWL_STATE_CKB_Hovered;
+      }
+    }
+  }
+  if (bRepaint)
+    Repaint(&m_rtBox);
+}
+
+void CFWL_CheckBox::OnMouseLeave() {
+  if (m_bBtnDown)
+    m_pProperties->m_dwStates |= FWL_STATE_CKB_Hovered;
+  else
+    m_pProperties->m_dwStates &= ~FWL_STATE_CKB_Hovered;
+
+  Repaint(&m_rtBox);
+}
+
+void CFWL_CheckBox::OnKeyDown(CFWL_MsgKey* pMsg) {
+  if (pMsg->m_dwKeyCode == FWL_VKEY_Tab) {
+    DispatchKeyEvent(pMsg);
+    return;
+  }
+  if (pMsg->m_dwKeyCode == FWL_VKEY_Return ||
+      pMsg->m_dwKeyCode == FWL_VKEY_Space) {
+    NextStates();
+  }
+}