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      1 // Copyright 2014 PDFium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
      6 
      7 #include "xfa/fwl/cfwl_caret.h"
      8 
      9 #include <utility>
     10 
     11 #include "third_party/base/ptr_util.h"
     12 #include "xfa/fwl/cfwl_notedriver.h"
     13 #include "xfa/fwl/cfwl_themebackground.h"
     14 #include "xfa/fwl/cfwl_timerinfo.h"
     15 #include "xfa/fwl/cfwl_widgetproperties.h"
     16 #include "xfa/fwl/ifwl_themeprovider.h"
     17 
     18 namespace {
     19 
     20 const uint32_t kFrequency = 400;
     21 
     22 }  // namespace
     23 
     24 CFWL_Caret::CFWL_Caret(const CFWL_App* app,
     25                        std::unique_ptr<CFWL_WidgetProperties> properties,
     26                        CFWL_Widget* pOuter)
     27     : CFWL_Widget(app, std::move(properties), pOuter),
     28       m_pTimer(new CFWL_Caret::Timer(this)),
     29       m_pTimerInfo(nullptr) {
     30   SetStates(FWL_STATE_CAT_HightLight);
     31 }
     32 
     33 CFWL_Caret::~CFWL_Caret() {
     34   if (m_pTimerInfo) {
     35     m_pTimerInfo->StopTimer();
     36     m_pTimerInfo = nullptr;
     37   }
     38 }
     39 
     40 FWL_Type CFWL_Caret::GetClassID() const {
     41   return FWL_Type::Caret;
     42 }
     43 
     44 void CFWL_Caret::Update() {}
     45 
     46 void CFWL_Caret::DrawWidget(CFX_Graphics* pGraphics,
     47                             const CFX_Matrix* pMatrix) {
     48   if (!pGraphics)
     49     return;
     50   if (!m_pProperties->m_pThemeProvider)
     51     m_pProperties->m_pThemeProvider = GetAvailableTheme();
     52   if (!m_pProperties->m_pThemeProvider)
     53     return;
     54 
     55   DrawCaretBK(pGraphics, m_pProperties->m_pThemeProvider, pMatrix);
     56 }
     57 
     58 void CFWL_Caret::ShowCaret() {
     59   if (m_pTimerInfo)
     60     m_pTimerInfo->StopTimer();
     61   m_pTimerInfo = m_pTimer->StartTimer(kFrequency, true);
     62   RemoveStates(FWL_WGTSTATE_Invisible);
     63 }
     64 
     65 void CFWL_Caret::HideCaret() {
     66   if (m_pTimerInfo) {
     67     m_pTimerInfo->StopTimer();
     68     m_pTimerInfo = nullptr;
     69   }
     70   SetStates(FWL_WGTSTATE_Invisible);
     71 }
     72 
     73 void CFWL_Caret::DrawCaretBK(CFX_Graphics* pGraphics,
     74                              IFWL_ThemeProvider* pTheme,
     75                              const CFX_Matrix* pMatrix) {
     76   if (!(m_pProperties->m_dwStates & FWL_STATE_CAT_HightLight))
     77     return;
     78 
     79   CFWL_ThemeBackground param;
     80   param.m_pWidget = this;
     81   param.m_pGraphics = pGraphics;
     82   param.m_rtPart = CFX_RectF(0, 0, GetWidgetRect().Size());
     83   param.m_iPart = CFWL_Part::Background;
     84   param.m_dwStates = CFWL_PartState_HightLight;
     85   if (pMatrix)
     86     param.m_matrix.Concat(*pMatrix);
     87   pTheme->DrawBackground(&param);
     88 }
     89 
     90 void CFWL_Caret::OnProcessMessage(CFWL_Message* pMessage) {}
     91 
     92 void CFWL_Caret::OnDrawWidget(CFX_Graphics* pGraphics,
     93                               const CFX_Matrix* pMatrix) {
     94   DrawWidget(pGraphics, pMatrix);
     95 }
     96 
     97 CFWL_Caret::Timer::Timer(CFWL_Caret* pCaret) : CFWL_Timer(pCaret) {}
     98 
     99 void CFWL_Caret::Timer::Run(CFWL_TimerInfo* pTimerInfo) {
    100   CFWL_Caret* pCaret = static_cast<CFWL_Caret*>(m_pWidget);
    101   if (!(pCaret->GetStates() & FWL_STATE_CAT_HightLight))
    102     pCaret->SetStates(FWL_STATE_CAT_HightLight);
    103   else
    104     pCaret->RemoveStates(FWL_STATE_CAT_HightLight);
    105 
    106   CFX_RectF rt = pCaret->GetWidgetRect();
    107   pCaret->RepaintRect(CFX_RectF(0, 0, rt.width + 1, rt.height));
    108 }
    109