// 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 "fpdfsdk/pwl/cpwl_list_box.h" #include <sstream> #include "core/fxge/cfx_renderdevice.h" #include "fpdfsdk/pwl/cpwl_edit.h" #include "fpdfsdk/pwl/cpwl_edit_ctrl.h" #include "fpdfsdk/pwl/cpwl_edit_impl.h" #include "fpdfsdk/pwl/cpwl_list_impl.h" #include "fpdfsdk/pwl/cpwl_scroll_bar.h" #include "fpdfsdk/pwl/cpwl_wnd.h" #include "public/fpdf_fwlevent.h" #include "third_party/base/ptr_util.h" CPWL_List_Notify::CPWL_List_Notify(CPWL_ListBox* pList) : m_pList(pList) { ASSERT(m_pList); } CPWL_List_Notify::~CPWL_List_Notify() {} void CPWL_List_Notify::IOnSetScrollInfoY(float fPlateMin, float fPlateMax, float fContentMin, float fContentMax, float fSmallStep, float fBigStep) { PWL_SCROLL_INFO Info; Info.fPlateWidth = fPlateMax - fPlateMin; Info.fContentMin = fContentMin; Info.fContentMax = fContentMax; Info.fSmallStep = fSmallStep; Info.fBigStep = fBigStep; m_pList->SetScrollInfo(Info); CPWL_ScrollBar* pScroll = m_pList->GetVScrollBar(); if (!pScroll) return; if (IsFloatBigger(Info.fPlateWidth, Info.fContentMax - Info.fContentMin) || IsFloatEqual(Info.fPlateWidth, Info.fContentMax - Info.fContentMin)) { if (pScroll->IsVisible()) { pScroll->SetVisible(false); m_pList->RePosChildWnd(); } } else { if (!pScroll->IsVisible()) { pScroll->SetVisible(true); m_pList->RePosChildWnd(); } } } void CPWL_List_Notify::IOnSetScrollPosY(float fy) { m_pList->SetScrollPosition(fy); } void CPWL_List_Notify::IOnInvalidateRect(CFX_FloatRect* pRect) { m_pList->InvalidateRect(pRect); } CPWL_ListBox::CPWL_ListBox() : m_pList(new CPWL_ListCtrl), m_bMouseDown(false), m_bHoverSel(false), m_pFillerNotify(nullptr) {} CPWL_ListBox::~CPWL_ListBox() {} ByteString CPWL_ListBox::GetClassName() const { return "CPWL_ListBox"; } void CPWL_ListBox::OnCreated() { m_pList->SetFontMap(GetFontMap()); m_pListNotify = pdfium::MakeUnique<CPWL_List_Notify>(this); m_pList->SetNotify(m_pListNotify.get()); SetHoverSel(HasFlag(PLBS_HOVERSEL)); m_pList->SetMultipleSel(HasFlag(PLBS_MULTIPLESEL)); m_pList->SetFontSize(GetCreationParams().fFontSize); m_bHoverSel = HasFlag(PLBS_HOVERSEL); } void CPWL_ListBox::OnDestroy() { // Make sure the notifier is removed from the list as we are about to // destroy the notifier and don't want to leave a dangling pointer. m_pList->SetNotify(nullptr); m_pListNotify.reset(); } void CPWL_ListBox::DrawThisAppearance(CFX_RenderDevice* pDevice, const CFX_Matrix& mtUser2Device) { CPWL_Wnd::DrawThisAppearance(pDevice, mtUser2Device); CFX_FloatRect rcPlate = m_pList->GetPlateRect(); CFX_FloatRect rcList = GetListRect(); CFX_FloatRect rcClient = GetClientRect(); for (int32_t i = 0, sz = m_pList->GetCount(); i < sz; i++) { CFX_FloatRect rcItem = m_pList->GetItemRect(i); if (rcItem.bottom > rcPlate.top || rcItem.top < rcPlate.bottom) continue; CFX_PointF ptOffset(rcItem.left, (rcItem.top + rcItem.bottom) * 0.5f); if (CPWL_EditImpl* pEdit = m_pList->GetItemEdit(i)) { CFX_FloatRect rcContent = pEdit->GetContentRect(); if (rcContent.Width() > rcClient.Width()) rcItem.Intersect(rcList); else rcItem.Intersect(rcClient); } if (m_pList->IsItemSelected(i)) { CFX_SystemHandler* pSysHandler = GetSystemHandler(); if (pSysHandler && pSysHandler->IsSelectionImplemented()) { CPWL_EditImpl::DrawEdit(pDevice, mtUser2Device, m_pList->GetItemEdit(i), GetTextColor().ToFXColor(255), rcList, ptOffset, nullptr, pSysHandler, m_pFormFiller.Get()); pSysHandler->OutputSelectedRect(m_pFormFiller.Get(), rcItem); } else { pDevice->DrawFillRect(&mtUser2Device, rcItem, ArgbEncode(255, 0, 51, 113)); CPWL_EditImpl::DrawEdit(pDevice, mtUser2Device, m_pList->GetItemEdit(i), ArgbEncode(255, 255, 255, 255), rcList, ptOffset, nullptr, pSysHandler, m_pFormFiller.Get()); } } else { CFX_SystemHandler* pSysHandler = GetSystemHandler(); CPWL_EditImpl::DrawEdit(pDevice, mtUser2Device, m_pList->GetItemEdit(i), GetTextColor().ToFXColor(255), rcList, ptOffset, nullptr, pSysHandler, nullptr); } } } bool CPWL_ListBox::OnKeyDown(uint16_t nChar, uint32_t nFlag) { CPWL_Wnd::OnKeyDown(nChar, nFlag); switch (nChar) { default: return false; case FWL_VKEY_Up: case FWL_VKEY_Down: case FWL_VKEY_Home: case FWL_VKEY_Left: case FWL_VKEY_End: case FWL_VKEY_Right: break; } switch (nChar) { case FWL_VKEY_Up: m_pList->OnVK_UP(IsSHIFTpressed(nFlag), IsCTRLpressed(nFlag)); break; case FWL_VKEY_Down: m_pList->OnVK_DOWN(IsSHIFTpressed(nFlag), IsCTRLpressed(nFlag)); break; case FWL_VKEY_Home: m_pList->OnVK_HOME(IsSHIFTpressed(nFlag), IsCTRLpressed(nFlag)); break; case FWL_VKEY_Left: m_pList->OnVK_LEFT(IsSHIFTpressed(nFlag), IsCTRLpressed(nFlag)); break; case FWL_VKEY_End: m_pList->OnVK_END(IsSHIFTpressed(nFlag), IsCTRLpressed(nFlag)); break; case FWL_VKEY_Right: m_pList->OnVK_RIGHT(IsSHIFTpressed(nFlag), IsCTRLpressed(nFlag)); break; case FWL_VKEY_Delete: break; } OnNotifySelectionChanged(true, nFlag); return true; } bool CPWL_ListBox::OnChar(uint16_t nChar, uint32_t nFlag) { CPWL_Wnd::OnChar(nChar, nFlag); if (!m_pList->OnChar(nChar, IsSHIFTpressed(nFlag), IsCTRLpressed(nFlag))) return false; OnNotifySelectionChanged(true, nFlag); return true; } bool CPWL_ListBox::OnLButtonDown(const CFX_PointF& point, uint32_t nFlag) { CPWL_Wnd::OnLButtonDown(point, nFlag); if (ClientHitTest(point)) { m_bMouseDown = true; SetFocus(); SetCapture(); m_pList->OnMouseDown(point, IsSHIFTpressed(nFlag), IsCTRLpressed(nFlag)); } return true; } bool CPWL_ListBox::OnLButtonUp(const CFX_PointF& point, uint32_t nFlag) { CPWL_Wnd::OnLButtonUp(point, nFlag); if (m_bMouseDown) { ReleaseCapture(); m_bMouseDown = false; } OnNotifySelectionChanged(false, nFlag); return true; } void CPWL_ListBox::SetHoverSel(bool bHoverSel) { m_bHoverSel = bHoverSel; } bool CPWL_ListBox::OnMouseMove(const CFX_PointF& point, uint32_t nFlag) { CPWL_Wnd::OnMouseMove(point, nFlag); if (m_bHoverSel && !IsCaptureMouse() && ClientHitTest(point)) m_pList->Select(m_pList->GetItemIndex(point)); if (m_bMouseDown) m_pList->OnMouseMove(point, IsSHIFTpressed(nFlag), IsCTRLpressed(nFlag)); return true; } void CPWL_ListBox::SetScrollInfo(const PWL_SCROLL_INFO& info) { if (CPWL_Wnd* pChild = GetVScrollBar()) pChild->SetScrollInfo(info); } void CPWL_ListBox::SetScrollPosition(float pos) { if (CPWL_Wnd* pChild = GetVScrollBar()) pChild->SetScrollPosition(pos); } void CPWL_ListBox::ScrollWindowVertically(float pos) { m_pList->SetScrollPos(CFX_PointF(0, pos)); } bool CPWL_ListBox::RePosChildWnd() { if (!CPWL_Wnd::RePosChildWnd()) return false; m_pList->SetPlateRect(GetListRect()); return true; } bool CPWL_ListBox::OnNotifySelectionChanged(bool bKeyDown, uint32_t nFlag) { if (!m_pFillerNotify) return false; CPWL_Wnd::ObservedPtr thisObserved(this); WideString swChange = GetText(); WideString strChangeEx; int nSelStart = 0; int nSelEnd = swChange.GetLength(); bool bRC; bool bExit; std::tie(bRC, bExit) = m_pFillerNotify->OnBeforeKeyStroke( GetAttachedData(), swChange, strChangeEx, nSelStart, nSelEnd, bKeyDown, nFlag); if (!thisObserved) return false; return bExit; } CFX_FloatRect CPWL_ListBox::GetFocusRect() const { if (m_pList->IsMultipleSel()) { CFX_FloatRect rcCaret = m_pList->GetItemRect(m_pList->GetCaret()); rcCaret.Intersect(GetClientRect()); return rcCaret; } return CPWL_Wnd::GetFocusRect(); } void CPWL_ListBox::AddString(const WideString& str) { m_pList->AddString(str); } WideString CPWL_ListBox::GetText() { return m_pList->GetText(); } void CPWL_ListBox::SetFontSize(float fFontSize) { m_pList->SetFontSize(fFontSize); } float CPWL_ListBox::GetFontSize() const { return m_pList->GetFontSize(); } void CPWL_ListBox::Select(int32_t nItemIndex) { m_pList->Select(nItemIndex); } void CPWL_ListBox::SetCaret(int32_t nItemIndex) { m_pList->SetCaret(nItemIndex); } void CPWL_ListBox::SetTopVisibleIndex(int32_t nItemIndex) { m_pList->SetTopItem(nItemIndex); } void CPWL_ListBox::ScrollToListItem(int32_t nItemIndex) { m_pList->ScrollToListItem(nItemIndex); } void CPWL_ListBox::ResetContent() { m_pList->Empty(); } void CPWL_ListBox::Reset() { m_pList->Cancel(); } bool CPWL_ListBox::IsMultipleSel() const { return m_pList->IsMultipleSel(); } int32_t CPWL_ListBox::GetCaretIndex() const { return m_pList->GetCaret(); } int32_t CPWL_ListBox::GetCurSel() const { return m_pList->GetSelect(); } bool CPWL_ListBox::IsItemSelected(int32_t nItemIndex) const { return m_pList->IsItemSelected(nItemIndex); } int32_t CPWL_ListBox::GetTopVisibleIndex() const { m_pList->ScrollToListItem(m_pList->GetFirstSelected()); return m_pList->GetTopItem(); } int32_t CPWL_ListBox::GetCount() const { return m_pList->GetCount(); } int32_t CPWL_ListBox::FindNext(int32_t nIndex, wchar_t nChar) const { return m_pList->FindNext(nIndex, nChar); } CFX_FloatRect CPWL_ListBox::GetContentRect() const { return m_pList->GetContentRect(); } float CPWL_ListBox::GetFirstHeight() const { return m_pList->GetFirstHeight(); } CFX_FloatRect CPWL_ListBox::GetListRect() const { float width = static_cast<float>(GetBorderWidth() + GetInnerBorderWidth()); return GetWindowRect().GetDeflated(width, width); } bool CPWL_ListBox::OnMouseWheel(short zDelta, const CFX_PointF& point, uint32_t nFlag) { if (zDelta < 0) m_pList->OnVK_DOWN(IsSHIFTpressed(nFlag), IsCTRLpressed(nFlag)); else m_pList->OnVK_UP(IsSHIFTpressed(nFlag), IsCTRLpressed(nFlag)); OnNotifySelectionChanged(false, nFlag); return true; }