1 // Copyright 2016 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_comboboxproxy.h" 8 9 #include <memory> 10 #include <utility> 11 12 #include "xfa/fwl/cfwl_app.h" 13 #include "xfa/fwl/cfwl_combobox.h" 14 #include "xfa/fwl/cfwl_messagekillfocus.h" 15 #include "xfa/fwl/cfwl_messagemouse.h" 16 #include "xfa/fwl/cfwl_notedriver.h" 17 18 CFWL_ComboBoxProxy::CFWL_ComboBoxProxy( 19 CFWL_ComboBox* pComboBox, 20 const CFWL_App* app, 21 std::unique_ptr<CFWL_WidgetProperties> properties, 22 CFWL_Widget* pOuter) 23 : CFWL_FormProxy(app, std::move(properties), pOuter), 24 m_bLButtonDown(false), 25 m_bLButtonUpSelf(false), 26 m_pComboBox(pComboBox) {} 27 28 CFWL_ComboBoxProxy::~CFWL_ComboBoxProxy() {} 29 30 void CFWL_ComboBoxProxy::OnProcessMessage(CFWL_Message* pMessage) { 31 if (!pMessage) 32 return; 33 34 switch (pMessage->GetType()) { 35 case CFWL_Message::Type::Mouse: { 36 CFWL_MessageMouse* pMsg = static_cast<CFWL_MessageMouse*>(pMessage); 37 switch (pMsg->m_dwCmd) { 38 case FWL_MouseCommand::LeftButtonDown: 39 OnLButtonDown(pMsg); 40 break; 41 case FWL_MouseCommand::LeftButtonUp: 42 OnLButtonUp(pMsg); 43 break; 44 default: 45 break; 46 } 47 break; 48 } 49 case CFWL_Message::Type::KillFocus: 50 OnFocusChanged(pMessage, false); 51 break; 52 case CFWL_Message::Type::SetFocus: 53 OnFocusChanged(pMessage, true); 54 break; 55 default: 56 break; 57 } 58 CFWL_Widget::OnProcessMessage(pMessage); 59 } 60 61 void CFWL_ComboBoxProxy::OnDrawWidget(CFX_Graphics* pGraphics, 62 const CFX_Matrix* pMatrix) { 63 m_pComboBox->DrawStretchHandler(pGraphics, pMatrix); 64 } 65 66 void CFWL_ComboBoxProxy::OnLButtonDown(CFWL_Message* pMessage) { 67 const CFWL_App* pApp = GetOwnerApp(); 68 if (!pApp) 69 return; 70 71 CFWL_NoteDriver* pDriver = 72 static_cast<CFWL_NoteDriver*>(pApp->GetNoteDriver()); 73 CFWL_MessageMouse* pMsg = static_cast<CFWL_MessageMouse*>(pMessage); 74 if (CFX_RectF(0, 0, GetWidgetRect().Size()).Contains(pMsg->m_pos)) { 75 m_bLButtonDown = true; 76 pDriver->SetGrab(this, true); 77 } else { 78 m_bLButtonDown = false; 79 pDriver->SetGrab(this, false); 80 m_pComboBox->ShowDropList(false); 81 } 82 } 83 84 void CFWL_ComboBoxProxy::OnLButtonUp(CFWL_Message* pMessage) { 85 m_bLButtonDown = false; 86 const CFWL_App* pApp = GetOwnerApp(); 87 if (!pApp) 88 return; 89 90 CFWL_NoteDriver* pDriver = 91 static_cast<CFWL_NoteDriver*>(pApp->GetNoteDriver()); 92 pDriver->SetGrab(this, false); 93 if (!m_bLButtonUpSelf) { 94 m_bLButtonUpSelf = true; 95 return; 96 } 97 98 CFWL_MessageMouse* pMsg = static_cast<CFWL_MessageMouse*>(pMessage); 99 if (!CFX_RectF(0, 0, GetWidgetRect().Size()).Contains(pMsg->m_pos) && 100 m_pComboBox->IsDropListVisible()) { 101 m_pComboBox->ShowDropList(false); 102 } 103 } 104 105 void CFWL_ComboBoxProxy::OnFocusChanged(CFWL_Message* pMessage, bool bSet) { 106 if (bSet) 107 return; 108 109 CFWL_MessageKillFocus* pMsg = static_cast<CFWL_MessageKillFocus*>(pMessage); 110 if (!pMsg->m_pSetFocus) 111 m_pComboBox->ShowDropList(false); 112 } 113