// 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_notedriver.h" #include <algorithm> #include <utility> #include "core/fxcrt/fx_extension.h" #include "third_party/base/ptr_util.h" #include "third_party/base/stl_util.h" #include "xfa/fwl/cfwl_app.h" #include "xfa/fwl/cfwl_eventtarget.h" #include "xfa/fwl/cfwl_form.h" #include "xfa/fwl/cfwl_messagekey.h" #include "xfa/fwl/cfwl_messagekillfocus.h" #include "xfa/fwl/cfwl_messagemouse.h" #include "xfa/fwl/cfwl_messagemousewheel.h" #include "xfa/fwl/cfwl_messagesetfocus.h" #include "xfa/fwl/cfwl_noteloop.h" #include "xfa/fwl/cfwl_widgetmgr.h" CFWL_NoteDriver::CFWL_NoteDriver() : m_pNoteLoop(pdfium::MakeUnique<CFWL_NoteLoop>()) { PushNoteLoop(m_pNoteLoop.get()); } CFWL_NoteDriver::~CFWL_NoteDriver() = default; void CFWL_NoteDriver::SendEvent(CFWL_Event* pNote) { for (const auto& pair : m_eventTargets) { if (pair.second->IsValid()) pair.second->ProcessEvent(pNote); } } void CFWL_NoteDriver::RegisterEventTarget(CFWL_Widget* pListener, CFWL_Widget* pEventSource) { uint32_t key = pListener->GetEventKey(); if (key == 0) { do { key = rand(); } while (key == 0 || pdfium::ContainsKey(m_eventTargets, key)); pListener->SetEventKey(key); } if (!m_eventTargets[key]) m_eventTargets[key] = pdfium::MakeUnique<CFWL_EventTarget>(pListener); m_eventTargets[key]->SetEventSource(pEventSource); } void CFWL_NoteDriver::UnregisterEventTarget(CFWL_Widget* pListener) { uint32_t key = pListener->GetEventKey(); if (key == 0) return; auto it = m_eventTargets.find(key); if (it != m_eventTargets.end()) it->second->FlagInvalid(); } void CFWL_NoteDriver::PushNoteLoop(CFWL_NoteLoop* pNoteLoop) { m_NoteLoopQueue.emplace_back(pNoteLoop); } CFWL_NoteLoop* CFWL_NoteDriver::PopNoteLoop() { if (m_NoteLoopQueue.empty()) return nullptr; CFWL_NoteLoop* p = m_NoteLoopQueue.back().Get(); m_NoteLoopQueue.pop_back(); return p; } bool CFWL_NoteDriver::SetFocus(CFWL_Widget* pFocus) { if (m_pFocus == pFocus) return true; CFWL_Widget* pPrev = m_pFocus.Get(); m_pFocus = pFocus; if (pPrev) { if (IFWL_WidgetDelegate* pDelegate = pPrev->GetDelegate()) { CFWL_MessageKillFocus ms(pPrev, pPrev); pDelegate->OnProcessMessage(&ms); } } if (pFocus) { CFWL_Widget* pWidget = pFocus->GetOwnerApp()->GetWidgetMgr()->GetSystemFormWidget(pFocus); CFWL_Form* pForm = static_cast<CFWL_Form*>(pWidget); if (pForm) pForm->SetSubFocus(pFocus); if (IFWL_WidgetDelegate* pDelegate = pFocus->GetDelegate()) { CFWL_MessageSetFocus ms(nullptr, pFocus); pDelegate->OnProcessMessage(&ms); } } return true; } void CFWL_NoteDriver::Run() { #if _FX_OS_ == _FX_OS_LINUX_ || _FX_PLATFORM_ == _FX_PLATFORM_WINDOWS_ for (;;) { CFWL_NoteLoop* pTopLoop = GetTopLoop(); if (!pTopLoop || !pTopLoop->ContinueModal()) break; UnqueueMessageAndProcess(pTopLoop); } #endif // _FX_OS_ == _FX_OS_LINUX_ || _FX_PLATFORM_ == _FX_PLATFORM_WINDOWS_ } void CFWL_NoteDriver::NotifyTargetHide(CFWL_Widget* pNoteTarget) { if (m_pFocus == pNoteTarget) m_pFocus = nullptr; if (m_pHover == pNoteTarget) m_pHover = nullptr; if (m_pGrab == pNoteTarget) m_pGrab = nullptr; } void CFWL_NoteDriver::NotifyTargetDestroy(CFWL_Widget* pNoteTarget) { if (m_pFocus == pNoteTarget) m_pFocus = nullptr; if (m_pHover == pNoteTarget) m_pHover = nullptr; if (m_pGrab == pNoteTarget) m_pGrab = nullptr; UnregisterEventTarget(pNoteTarget); for (const auto& pWidget : m_Forms) { CFWL_Form* pForm = static_cast<CFWL_Form*>(pWidget.Get()); if (!pForm) continue; CFWL_Widget* pSubFocus = pForm->GetSubFocus(); if (!pSubFocus) return; if (pSubFocus == pNoteTarget) pForm->SetSubFocus(nullptr); } } void CFWL_NoteDriver::RegisterForm(CFWL_Widget* pForm) { if (!pForm || pdfium::ContainsValue(m_Forms, pForm)) return; m_Forms.emplace_back(pForm); if (m_Forms.size() == 1 && !m_NoteLoopQueue.empty() && m_NoteLoopQueue[0]) m_NoteLoopQueue[0]->SetMainForm(pForm); } void CFWL_NoteDriver::UnRegisterForm(CFWL_Widget* pForm) { auto iter = std::find(m_Forms.begin(), m_Forms.end(), pForm); if (iter != m_Forms.end()) m_Forms.erase(iter); } void CFWL_NoteDriver::QueueMessage(std::unique_ptr<CFWL_Message> pMessage) { m_NoteQueue.push_back(std::move(pMessage)); } void CFWL_NoteDriver::UnqueueMessageAndProcess(CFWL_NoteLoop* pNoteLoop) { if (m_NoteQueue.empty()) return; std::unique_ptr<CFWL_Message> pMessage = std::move(m_NoteQueue.front()); m_NoteQueue.pop_front(); if (!IsValidMessage(pMessage.get())) return; ProcessMessage(std::move(pMessage)); } CFWL_NoteLoop* CFWL_NoteDriver::GetTopLoop() const { return !m_NoteLoopQueue.empty() ? m_NoteLoopQueue.back().Get() : nullptr; } void CFWL_NoteDriver::ProcessMessage(std::unique_ptr<CFWL_Message> pMessage) { CFWL_Widget* pMessageForm = pMessage->GetDstTarget(); if (!pMessageForm) return; if (!DispatchMessage(pMessage.get(), pMessageForm)) return; if (pMessage->GetType() == CFWL_Message::Type::Mouse) MouseSecondary(pMessage.get()); } bool CFWL_NoteDriver::DispatchMessage(CFWL_Message* pMessage, CFWL_Widget* pMessageForm) { switch (pMessage->GetType()) { case CFWL_Message::Type::SetFocus: { if (!DoSetFocus(pMessage, pMessageForm)) return false; break; } case CFWL_Message::Type::KillFocus: { if (!DoKillFocus(pMessage, pMessageForm)) return false; break; } case CFWL_Message::Type::Key: { if (!DoKey(pMessage, pMessageForm)) return false; break; } case CFWL_Message::Type::Mouse: { if (!DoMouse(pMessage, pMessageForm)) return false; break; } case CFWL_Message::Type::MouseWheel: { if (!DoWheel(pMessage, pMessageForm)) return false; break; } default: break; } IFWL_WidgetDelegate* pDelegate = pMessage->GetDstTarget()->GetDelegate(); if (pDelegate) pDelegate->OnProcessMessage(pMessage); return true; } bool CFWL_NoteDriver::DoSetFocus(CFWL_Message* pMessage, CFWL_Widget* pMessageForm) { m_pFocus = pMessage->GetDstTarget(); return true; } bool CFWL_NoteDriver::DoKillFocus(CFWL_Message* pMessage, CFWL_Widget* pMessageForm) { if (m_pFocus == pMessage->GetDstTarget()) m_pFocus = nullptr; return true; } bool CFWL_NoteDriver::DoKey(CFWL_Message* pMessage, CFWL_Widget* pMessageForm) { CFWL_MessageKey* pMsg = static_cast<CFWL_MessageKey*>(pMessage); #if (_FX_OS_ != _FX_OS_MACOSX_) if (pMsg->m_dwCmd == FWL_KeyCommand::KeyDown && pMsg->m_dwKeyCode == FWL_VKEY_Tab) { CFWL_WidgetMgr* pWidgetMgr = pMessageForm->GetOwnerApp()->GetWidgetMgr(); CFWL_Widget* pForm = GetMessageForm(pMsg->GetDstTarget()); CFWL_Widget* pFocus = m_pFocus.Get(); if (m_pFocus && pWidgetMgr->GetSystemFormWidget(m_pFocus.Get()) != pForm) pFocus = nullptr; bool bFind = false; CFWL_Widget* pNextTabStop = pWidgetMgr->NextTab(pForm, pFocus, bFind); if (!pNextTabStop) { bFind = false; pNextTabStop = pWidgetMgr->NextTab(pForm, nullptr, bFind); } if (pNextTabStop == pFocus) return true; if (pNextTabStop) SetFocus(pNextTabStop); return true; } #endif if (!m_pFocus) { if (pMsg->m_dwCmd == FWL_KeyCommand::KeyDown && pMsg->m_dwKeyCode == FWL_VKEY_Return) { CFWL_WidgetMgr* pWidgetMgr = pMessageForm->GetOwnerApp()->GetWidgetMgr(); CFWL_Widget* defButton = pWidgetMgr->GetDefaultButton(pMessageForm); if (defButton) { pMsg->SetDstTarget(defButton); return true; } } return false; } pMsg->SetDstTarget(m_pFocus.Get()); return true; } bool CFWL_NoteDriver::DoMouse(CFWL_Message* pMessage, CFWL_Widget* pMessageForm) { CFWL_MessageMouse* pMsg = static_cast<CFWL_MessageMouse*>(pMessage); if (pMsg->m_dwCmd == FWL_MouseCommand::Leave || pMsg->m_dwCmd == FWL_MouseCommand::Hover || pMsg->m_dwCmd == FWL_MouseCommand::Enter) { return !!pMsg->GetDstTarget(); } if (pMsg->GetDstTarget() != pMessageForm) pMsg->m_pos = pMsg->GetDstTarget()->TransformTo(pMessageForm, pMsg->m_pos); if (!DoMouseEx(pMsg, pMessageForm)) pMsg->SetDstTarget(pMessageForm); return true; } bool CFWL_NoteDriver::DoWheel(CFWL_Message* pMessage, CFWL_Widget* pMessageForm) { CFWL_WidgetMgr* pWidgetMgr = pMessageForm->GetOwnerApp()->GetWidgetMgr(); if (!pWidgetMgr) return false; CFWL_MessageMouseWheel* pMsg = static_cast<CFWL_MessageMouseWheel*>(pMessage); CFWL_Widget* pDst = pWidgetMgr->GetWidgetAtPoint(pMessageForm, pMsg->m_pos); if (!pDst) return false; pMsg->m_pos = pMessageForm->TransformTo(pDst, pMsg->m_pos); pMsg->SetDstTarget(pDst); return true; } bool CFWL_NoteDriver::DoMouseEx(CFWL_Message* pMessage, CFWL_Widget* pMessageForm) { CFWL_WidgetMgr* pWidgetMgr = pMessageForm->GetOwnerApp()->GetWidgetMgr(); if (!pWidgetMgr) return false; CFWL_Widget* pTarget = nullptr; if (m_pGrab) pTarget = m_pGrab.Get(); CFWL_MessageMouse* pMsg = static_cast<CFWL_MessageMouse*>(pMessage); if (!pTarget) pTarget = pWidgetMgr->GetWidgetAtPoint(pMessageForm, pMsg->m_pos); if (!pTarget) return false; if (pTarget && pMessageForm != pTarget) pMsg->m_pos = pMessageForm->TransformTo(pTarget, pMsg->m_pos); pMsg->SetDstTarget(pTarget); return true; } void CFWL_NoteDriver::MouseSecondary(CFWL_Message* pMessage) { CFWL_Widget* pTarget = pMessage->GetDstTarget(); if (pTarget == m_pHover) return; CFWL_MessageMouse* pMsg = static_cast<CFWL_MessageMouse*>(pMessage); if (m_pHover) { CFWL_MessageMouse msLeave(nullptr, m_pHover.Get()); msLeave.m_pos = pTarget->TransformTo(m_pHover.Get(), pMsg->m_pos); msLeave.m_dwFlags = 0; msLeave.m_dwCmd = FWL_MouseCommand::Leave; DispatchMessage(&msLeave, nullptr); } if (pTarget->GetClassID() == FWL_Type::Form) { m_pHover = nullptr; return; } m_pHover = pTarget; CFWL_MessageMouse msHover(nullptr, pTarget); msHover.m_pos = pMsg->m_pos; msHover.m_dwFlags = 0; msHover.m_dwCmd = FWL_MouseCommand::Hover; DispatchMessage(&msHover, nullptr); } bool CFWL_NoteDriver::IsValidMessage(CFWL_Message* pMessage) { for (const auto& pNoteLoop : m_NoteLoopQueue) { CFWL_Widget* pForm = pNoteLoop->GetForm(); if (pForm && pForm == pMessage->GetDstTarget()) return true; } for (const auto& pWidget : m_Forms) { auto* pForm = static_cast<const CFWL_Form*>(pWidget.Get()); if (pForm == pMessage->GetDstTarget()) return true; } return false; } CFWL_Widget* CFWL_NoteDriver::GetMessageForm(CFWL_Widget* pDstTarget) { if (m_NoteLoopQueue.empty()) return nullptr; CFWL_Widget* pMessageForm = nullptr; if (m_NoteLoopQueue.size() > 1) pMessageForm = m_NoteLoopQueue.back()->GetForm(); else if (!pdfium::ContainsValue(m_Forms, pDstTarget)) pMessageForm = pDstTarget; if (!pMessageForm && pDstTarget) { CFWL_WidgetMgr* pWidgetMgr = pDstTarget->GetOwnerApp()->GetWidgetMgr(); if (!pWidgetMgr) return nullptr; pMessageForm = pWidgetMgr->GetSystemFormWidget(pDstTarget); } return pMessageForm; } void CFWL_NoteDriver::ClearEventTargets() { auto it = m_eventTargets.begin(); while (it != m_eventTargets.end()) { auto old = it++; if (!old->second->IsValid()) m_eventTargets.erase(old); } }