1 files changed, 112 insertions, 0 deletions
diff --git a/xfa/fwl/cfwl_caret.cpp b/xfa/fwl/cfwl_caret.cpp
new file mode 100644
index 0000000000..fdac8ec040
--- /dev/null
+++ b/xfa/fwl/cfwl_caret.cpp
@@ -0,0 +1,112 @@
+// 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_caret.h"
+
+#include <utility>
+
+#include "third_party/base/ptr_util.h"
+#include "xfa/fwl/cfwl_notedriver.h"
+#include "xfa/fwl/cfwl_themebackground.h"
+#include "xfa/fwl/cfwl_timerinfo.h"
+#include "xfa/fwl/cfwl_widgetproperties.h"
+#include "xfa/fwl/ifwl_themeprovider.h"
+
+namespace {
+
+const uint32_t kFrequency = 400;
+
+}  // namespace
+
+CFWL_Caret::CFWL_Caret(const CFWL_App* app,
+                       std::unique_ptr<CFWL_WidgetProperties> properties,
+                       CFWL_Widget* pOuter)
+    : CFWL_Widget(app, std::move(properties), pOuter),
+      m_pTimer(new CFWL_Caret::Timer(this)),
+      m_pTimerInfo(nullptr) {
+  SetStates(FWL_STATE_CAT_HightLight);
+}
+
+CFWL_Caret::~CFWL_Caret() {
+  if (m_pTimerInfo) {
+    m_pTimerInfo->StopTimer();
+    m_pTimerInfo = nullptr;
+  }
+}
+
+FWL_Type CFWL_Caret::GetClassID() const {
+  return FWL_Type::Caret;
+}
+
+void CFWL_Caret::Update() {}
+
+void CFWL_Caret::DrawWidget(CFX_Graphics* pGraphics,
+                            const CFX_Matrix* pMatrix) {
+  if (!pGraphics)
+    return;
+  if (!m_pProperties->m_pThemeProvider)
+    m_pProperties->m_pThemeProvider = GetAvailableTheme();
+  if (!m_pProperties->m_pThemeProvider)
+    return;
+
+  DrawCaretBK(pGraphics, m_pProperties->m_pThemeProvider, pMatrix);
+}
+
+void CFWL_Caret::ShowCaret() {
+  if (m_pTimerInfo)
+    m_pTimerInfo->StopTimer();
+  m_pTimerInfo = m_pTimer->StartTimer(kFrequency, true);
+  RemoveStates(FWL_WGTSTATE_Invisible);
+}
+
+void CFWL_Caret::HideCaret() {
+  if (m_pTimerInfo) {
+    m_pTimerInfo->StopTimer();
+    m_pTimerInfo = nullptr;
+  }
+  SetStates(FWL_WGTSTATE_Invisible);
+}
+
+void CFWL_Caret::DrawCaretBK(CFX_Graphics* pGraphics,
+                             IFWL_ThemeProvider* pTheme,
+                             const CFX_Matrix* pMatrix) {
+  if (!(m_pProperties->m_dwStates & FWL_STATE_CAT_HightLight))
+    return;
+
+  CFX_RectF rect = GetWidgetRect();
+  rect.Set(0, 0, rect.width, rect.height);
+
+  CFWL_ThemeBackground param;
+  param.m_pWidget = this;
+  param.m_pGraphics = pGraphics;
+  param.m_rtPart = rect;
+  param.m_iPart = CFWL_Part::Background;
+  param.m_dwStates = CFWL_PartState_HightLight;
+  if (pMatrix)
+    param.m_matrix.Concat(*pMatrix);
+  pTheme->DrawBackground(&param);
+}
+
+void CFWL_Caret::OnProcessMessage(CFWL_Message* pMessage) {}
+
+void CFWL_Caret::OnDrawWidget(CFX_Graphics* pGraphics,
+                              const CFX_Matrix* pMatrix) {
+  DrawWidget(pGraphics, pMatrix);
+}
+
+CFWL_Caret::Timer::Timer(CFWL_Caret* pCaret) : CFWL_Timer(pCaret) {}
+
+void CFWL_Caret::Timer::Run(CFWL_TimerInfo* pTimerInfo) {
+  CFWL_Caret* pCaret = static_cast<CFWL_Caret*>(m_pWidget);
+  if (!(pCaret->GetStates() & FWL_STATE_CAT_HightLight))
+    pCaret->SetStates(FWL_STATE_CAT_HightLight);
+  else
+    pCaret->RemoveStates(FWL_STATE_CAT_HightLight);
+
+  CFX_RectF rt = pCaret->GetWidgetRect();
+  rt.Set(0, 0, rt.width + 1, rt.height);
+  pCaret->Repaint(&rt);
+}