| // 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_combo_box.h" |
| |
| #include <algorithm> |
| #include <sstream> |
| #include <utility> |
| |
| #include "core/fxge/cfx_pathdata.h" |
| #include "core/fxge/cfx_renderdevice.h" |
| #include "fpdfsdk/pwl/cpwl_edit.h" |
| #include "fpdfsdk/pwl/cpwl_edit_ctrl.h" |
| #include "fpdfsdk/pwl/cpwl_list_box.h" |
| #include "fpdfsdk/pwl/cpwl_list_impl.h" |
| #include "fpdfsdk/pwl/cpwl_wnd.h" |
| #include "public/fpdf_fwlevent.h" |
| |
| namespace { |
| |
| constexpr float kComboBoxDefaultFontSize = 12.0f; |
| constexpr float kComboBoxTriangleHalfLength = 3.0f; |
| constexpr int kDefaultButtonWidth = 13; |
| |
| } // namespace |
| |
| CPWL_CBListBox::CPWL_CBListBox(const CreateParams& cp, |
| std::unique_ptr<PrivateData> pAttachedData) |
| : CPWL_ListBox(cp, std::move(pAttachedData)) {} |
| |
| CPWL_CBListBox::~CPWL_CBListBox() = default; |
| |
| bool CPWL_CBListBox::OnLButtonUp(const CFX_PointF& point, uint32_t nFlag) { |
| CPWL_Wnd::OnLButtonUp(point, nFlag); |
| |
| if (!m_bMouseDown) |
| return true; |
| |
| ReleaseCapture(); |
| m_bMouseDown = false; |
| |
| if (!ClientHitTest(point)) |
| return true; |
| if (CPWL_Wnd* pParent = GetParentWindow()) |
| pParent->NotifyLButtonUp(this, point); |
| |
| return !OnNotifySelectionChanged(false, nFlag); |
| } |
| |
| bool CPWL_CBListBox::IsMovementKey(uint16_t nChar) const { |
| switch (nChar) { |
| case FWL_VKEY_Up: |
| case FWL_VKEY_Down: |
| case FWL_VKEY_Home: |
| case FWL_VKEY_Left: |
| case FWL_VKEY_End: |
| case FWL_VKEY_Right: |
| return true; |
| default: |
| return false; |
| } |
| } |
| |
| bool CPWL_CBListBox::OnMovementKeyDown(uint16_t nChar, uint32_t nFlag) { |
| ASSERT(IsMovementKey(nChar)); |
| |
| 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; |
| } |
| return OnNotifySelectionChanged(true, nFlag); |
| } |
| |
| bool CPWL_CBListBox::IsChar(uint16_t nChar, uint32_t nFlag) const { |
| return m_pList->OnChar(nChar, IsSHIFTpressed(nFlag), IsCTRLpressed(nFlag)); |
| } |
| |
| bool CPWL_CBListBox::OnCharNotify(uint16_t nChar, uint32_t nFlag) { |
| if (auto* pComboBox = static_cast<CPWL_ComboBox*>(GetParentWindow())) |
| pComboBox->SetSelectText(); |
| |
| return OnNotifySelectionChanged(true, nFlag); |
| } |
| |
| CPWL_CBButton::CPWL_CBButton(const CreateParams& cp, |
| std::unique_ptr<PrivateData> pAttachedData) |
| : CPWL_Wnd(cp, std::move(pAttachedData)) {} |
| |
| CPWL_CBButton::~CPWL_CBButton() = default; |
| |
| void CPWL_CBButton::DrawThisAppearance(CFX_RenderDevice* pDevice, |
| const CFX_Matrix& mtUser2Device) { |
| CPWL_Wnd::DrawThisAppearance(pDevice, mtUser2Device); |
| |
| CFX_FloatRect rectWnd = CPWL_Wnd::GetWindowRect(); |
| if (!IsVisible() || rectWnd.IsEmpty()) |
| return; |
| |
| CFX_PointF ptCenter = GetCenterPoint(); |
| |
| static constexpr float kComboBoxTriangleQuarterLength = |
| kComboBoxTriangleHalfLength * 0.5; |
| CFX_PointF pt1(ptCenter.x - kComboBoxTriangleHalfLength, |
| ptCenter.y + kComboBoxTriangleQuarterLength); |
| CFX_PointF pt2(ptCenter.x + kComboBoxTriangleHalfLength, |
| ptCenter.y + kComboBoxTriangleQuarterLength); |
| CFX_PointF pt3(ptCenter.x, ptCenter.y - kComboBoxTriangleQuarterLength); |
| |
| if (IsFloatBigger(rectWnd.right - rectWnd.left, |
| kComboBoxTriangleHalfLength * 2) && |
| IsFloatBigger(rectWnd.top - rectWnd.bottom, |
| kComboBoxTriangleHalfLength)) { |
| CFX_PathData path; |
| path.AppendPoint(pt1, FXPT_TYPE::MoveTo, false); |
| path.AppendPoint(pt2, FXPT_TYPE::LineTo, false); |
| path.AppendPoint(pt3, FXPT_TYPE::LineTo, false); |
| path.AppendPoint(pt1, FXPT_TYPE::LineTo, false); |
| |
| pDevice->DrawPath(&path, &mtUser2Device, nullptr, |
| PWL_DEFAULT_BLACKCOLOR.ToFXColor(GetTransparency()), 0, |
| FXFILL_ALTERNATE); |
| } |
| } |
| |
| bool CPWL_CBButton::OnLButtonDown(const CFX_PointF& point, uint32_t nFlag) { |
| CPWL_Wnd::OnLButtonDown(point, nFlag); |
| |
| SetCapture(); |
| if (CPWL_Wnd* pParent = GetParentWindow()) |
| pParent->NotifyLButtonDown(this, point); |
| |
| return true; |
| } |
| |
| bool CPWL_CBButton::OnLButtonUp(const CFX_PointF& point, uint32_t nFlag) { |
| CPWL_Wnd::OnLButtonUp(point, nFlag); |
| |
| ReleaseCapture(); |
| return true; |
| } |
| |
| CPWL_ComboBox::CPWL_ComboBox(const CreateParams& cp, |
| std::unique_ptr<PrivateData> pAttachedData) |
| : CPWL_Wnd(cp, std::move(pAttachedData)) { |
| GetCreationParams()->dwFlags &= ~PWS_HSCROLL; |
| GetCreationParams()->dwFlags &= ~PWS_VSCROLL; |
| } |
| |
| CPWL_ComboBox::~CPWL_ComboBox() = default; |
| |
| void CPWL_ComboBox::OnDestroy() { |
| // Until cleanup takes place in the virtual destructor for CPWL_Wnd |
| // subclasses, implement the virtual OnDestroy method that does the |
| // cleanup first, then invokes the superclass OnDestroy ... gee, |
| // like a dtor would. |
| m_pList.Release(); |
| m_pButton.Release(); |
| m_pEdit.Release(); |
| CPWL_Wnd::OnDestroy(); |
| } |
| |
| void CPWL_ComboBox::SetFocus() { |
| if (m_pEdit) |
| m_pEdit->SetFocus(); |
| } |
| |
| void CPWL_ComboBox::KillFocus() { |
| if (!SetPopup(false)) |
| return; |
| |
| CPWL_Wnd::KillFocus(); |
| } |
| |
| WideString CPWL_ComboBox::GetSelectedText() { |
| if (m_pEdit) |
| return m_pEdit->GetSelectedText(); |
| |
| return WideString(); |
| } |
| |
| void CPWL_ComboBox::ReplaceSelection(const WideString& text) { |
| if (m_pEdit) |
| m_pEdit->ReplaceSelection(text); |
| } |
| |
| bool CPWL_ComboBox::CanUndo() { |
| return m_pEdit && m_pEdit->CanUndo(); |
| } |
| |
| bool CPWL_ComboBox::CanRedo() { |
| return m_pEdit && m_pEdit->CanRedo(); |
| } |
| |
| bool CPWL_ComboBox::Undo() { |
| return m_pEdit && m_pEdit->Undo(); |
| } |
| |
| bool CPWL_ComboBox::Redo() { |
| return m_pEdit && m_pEdit->Redo(); |
| } |
| |
| WideString CPWL_ComboBox::GetText() { |
| return m_pEdit ? m_pEdit->GetText() : WideString(); |
| } |
| |
| void CPWL_ComboBox::SetText(const WideString& text) { |
| if (m_pEdit) |
| m_pEdit->SetText(text); |
| } |
| |
| void CPWL_ComboBox::AddString(const WideString& str) { |
| if (m_pList) |
| m_pList->AddString(str); |
| } |
| |
| int32_t CPWL_ComboBox::GetSelect() const { |
| return m_nSelectItem; |
| } |
| |
| void CPWL_ComboBox::SetSelect(int32_t nItemIndex) { |
| if (m_pList) |
| m_pList->Select(nItemIndex); |
| |
| m_pEdit->SetText(m_pList->GetText()); |
| m_nSelectItem = nItemIndex; |
| } |
| |
| void CPWL_ComboBox::SetEditSelection(int32_t nStartChar, int32_t nEndChar) { |
| if (m_pEdit) |
| m_pEdit->SetSelection(nStartChar, nEndChar); |
| } |
| |
| void CPWL_ComboBox::GetEditSelection(int32_t& nStartChar, |
| int32_t& nEndChar) const { |
| nStartChar = -1; |
| nEndChar = -1; |
| |
| if (m_pEdit) |
| m_pEdit->GetSelection(nStartChar, nEndChar); |
| } |
| |
| void CPWL_ComboBox::ClearSelection() { |
| if (m_pEdit) |
| m_pEdit->ClearSelection(); |
| } |
| |
| void CPWL_ComboBox::CreateChildWnd(const CreateParams& cp) { |
| CreateEdit(cp); |
| CreateButton(cp); |
| CreateListBox(cp); |
| } |
| |
| void CPWL_ComboBox::CreateEdit(const CreateParams& cp) { |
| if (m_pEdit) |
| return; |
| |
| CreateParams ecp = cp; |
| ecp.dwFlags = PWS_VISIBLE | PWS_CHILD | PWS_BORDER | PES_CENTER | |
| PES_AUTOSCROLL | PES_UNDO; |
| |
| if (HasFlag(PWS_AUTOFONTSIZE)) |
| ecp.dwFlags |= PWS_AUTOFONTSIZE; |
| |
| if (!HasFlag(PCBS_ALLOWCUSTOMTEXT)) |
| ecp.dwFlags |= PWS_READONLY; |
| |
| ecp.rcRectWnd = CFX_FloatRect(); |
| ecp.dwBorderWidth = 0; |
| ecp.nBorderStyle = BorderStyle::SOLID; |
| |
| auto pEdit = pdfium::MakeUnique<CPWL_Edit>(ecp, CloneAttachedData()); |
| m_pEdit = pEdit.get(); |
| m_pEdit->AttachFFLData(m_pFormFiller.Get()); |
| AddChild(std::move(pEdit)); |
| m_pEdit->Realize(); |
| } |
| |
| void CPWL_ComboBox::CreateButton(const CreateParams& cp) { |
| if (m_pButton) |
| return; |
| |
| CreateParams bcp = cp; |
| bcp.dwFlags = PWS_VISIBLE | PWS_CHILD | PWS_BORDER | PWS_BACKGROUND; |
| bcp.sBackgroundColor = CFX_Color(CFX_Color::kRGB, 220.0f / 255.0f, |
| 220.0f / 255.0f, 220.0f / 255.0f); |
| bcp.sBorderColor = PWL_DEFAULT_BLACKCOLOR; |
| bcp.dwBorderWidth = 2; |
| bcp.nBorderStyle = BorderStyle::BEVELED; |
| bcp.eCursorType = FXCT_ARROW; |
| |
| auto pButton = pdfium::MakeUnique<CPWL_CBButton>(bcp, CloneAttachedData()); |
| m_pButton = pButton.get(); |
| AddChild(std::move(pButton)); |
| m_pButton->Realize(); |
| } |
| |
| void CPWL_ComboBox::CreateListBox(const CreateParams& cp) { |
| if (m_pList) |
| return; |
| |
| CreateParams lcp = cp; |
| lcp.dwFlags = |
| PWS_CHILD | PWS_BORDER | PWS_BACKGROUND | PLBS_HOVERSEL | PWS_VSCROLL; |
| lcp.nBorderStyle = BorderStyle::SOLID; |
| lcp.dwBorderWidth = 1; |
| lcp.eCursorType = FXCT_ARROW; |
| lcp.rcRectWnd = CFX_FloatRect(); |
| |
| lcp.fFontSize = |
| (cp.dwFlags & PWS_AUTOFONTSIZE) ? kComboBoxDefaultFontSize : cp.fFontSize; |
| |
| if (cp.sBorderColor.nColorType == CFX_Color::kTransparent) |
| lcp.sBorderColor = PWL_DEFAULT_BLACKCOLOR; |
| |
| if (cp.sBackgroundColor.nColorType == CFX_Color::kTransparent) |
| lcp.sBackgroundColor = PWL_DEFAULT_WHITECOLOR; |
| |
| auto pList = pdfium::MakeUnique<CPWL_CBListBox>(lcp, CloneAttachedData()); |
| m_pList = pList.get(); |
| m_pList->AttachFFLData(m_pFormFiller.Get()); |
| AddChild(std::move(pList)); |
| m_pList->Realize(); |
| } |
| |
| bool CPWL_ComboBox::RePosChildWnd() { |
| ObservedPtr<CPWL_ComboBox> thisObserved(this); |
| const CFX_FloatRect rcClient = GetClientRect(); |
| if (m_bPopup) { |
| const float fOldWindowHeight = m_rcOldWindow.Height(); |
| const float fOldClientHeight = fOldWindowHeight - GetBorderWidth() * 2; |
| |
| CFX_FloatRect rcList = CPWL_Wnd::GetWindowRect(); |
| CFX_FloatRect rcButton = rcClient; |
| rcButton.left = |
| std::max(rcButton.right - kDefaultButtonWidth, rcClient.left); |
| CFX_FloatRect rcEdit = rcClient; |
| rcEdit.right = std::max(rcButton.left - 1.0f, rcEdit.left); |
| if (m_bBottom) { |
| rcButton.bottom = rcButton.top - fOldClientHeight; |
| rcEdit.bottom = rcEdit.top - fOldClientHeight; |
| rcList.top -= fOldWindowHeight; |
| } else { |
| rcButton.top = rcButton.bottom + fOldClientHeight; |
| rcEdit.top = rcEdit.bottom + fOldClientHeight; |
| rcList.bottom += fOldWindowHeight; |
| } |
| |
| if (m_pButton) { |
| m_pButton->Move(rcButton, true, false); |
| if (!thisObserved) |
| return false; |
| } |
| |
| if (m_pEdit) { |
| m_pEdit->Move(rcEdit, true, false); |
| if (!thisObserved) |
| return false; |
| } |
| |
| if (m_pList) { |
| if (!m_pList->SetVisible(true) || !thisObserved) |
| return false; |
| |
| if (!m_pList->Move(rcList, true, false) || !thisObserved) |
| return false; |
| |
| m_pList->ScrollToListItem(m_nSelectItem); |
| if (!thisObserved) |
| return false; |
| } |
| return true; |
| } |
| |
| CFX_FloatRect rcButton = rcClient; |
| rcButton.left = std::max(rcButton.right - kDefaultButtonWidth, rcClient.left); |
| |
| if (m_pButton) { |
| m_pButton->Move(rcButton, true, false); |
| if (!thisObserved) |
| return false; |
| } |
| |
| CFX_FloatRect rcEdit = rcClient; |
| rcEdit.right = std::max(rcButton.left - 1.0f, rcEdit.left); |
| |
| if (m_pEdit) { |
| m_pEdit->Move(rcEdit, true, false); |
| if (!thisObserved) |
| return false; |
| } |
| |
| if (m_pList) { |
| m_pList->SetVisible(false); |
| if (!thisObserved) |
| return false; |
| } |
| |
| return true; |
| } |
| |
| void CPWL_ComboBox::SelectAll() { |
| if (m_pEdit && HasFlag(PCBS_ALLOWCUSTOMTEXT)) |
| m_pEdit->SelectAll(); |
| } |
| |
| CFX_FloatRect CPWL_ComboBox::GetFocusRect() const { |
| return CFX_FloatRect(); |
| } |
| |
| bool CPWL_ComboBox::SetPopup(bool bPopup) { |
| if (!m_pList) |
| return true; |
| if (bPopup == m_bPopup) |
| return true; |
| float fListHeight = m_pList->GetContentRect().Height(); |
| if (!IsFloatBigger(fListHeight, 0.0f)) |
| return true; |
| |
| if (!bPopup) { |
| m_bPopup = bPopup; |
| return Move(m_rcOldWindow, true, true); |
| } |
| |
| if (!m_pFillerNotify) |
| return true; |
| |
| ObservedPtr<CPWL_ComboBox> thisObserved(this); |
| |
| #ifdef PDF_ENABLE_XFA |
| if (m_pFillerNotify->OnPopupPreOpen(GetAttachedData(), 0)) |
| return !!thisObserved; |
| if (!thisObserved) |
| return false; |
| #endif // PDF_ENABLE_XFA |
| |
| float fBorderWidth = m_pList->GetBorderWidth() * 2; |
| float fPopupMin = 0.0f; |
| if (m_pList->GetCount() > 3) |
| fPopupMin = m_pList->GetFirstHeight() * 3 + fBorderWidth; |
| float fPopupMax = fListHeight + fBorderWidth; |
| |
| bool bBottom; |
| float fPopupRet; |
| m_pFillerNotify->QueryWherePopup(GetAttachedData(), fPopupMin, fPopupMax, |
| &bBottom, &fPopupRet); |
| if (!IsFloatBigger(fPopupRet, 0.0f)) |
| return true; |
| |
| m_rcOldWindow = CPWL_Wnd::GetWindowRect(); |
| m_bPopup = bPopup; |
| m_bBottom = bBottom; |
| |
| CFX_FloatRect rcWindow = m_rcOldWindow; |
| if (bBottom) |
| rcWindow.bottom -= fPopupRet; |
| else |
| rcWindow.top += fPopupRet; |
| |
| if (!Move(rcWindow, true, true)) |
| return false; |
| |
| #ifdef PDF_ENABLE_XFA |
| m_pFillerNotify->OnPopupPostOpen(GetAttachedData(), 0); |
| if (!thisObserved) |
| return false; |
| #endif // PDF_ENABLE_XFA |
| |
| return !!thisObserved; |
| } |
| |
| bool CPWL_ComboBox::OnKeyDown(uint16_t nChar, uint32_t nFlag) { |
| if (!m_pList) |
| return false; |
| if (!m_pEdit) |
| return false; |
| |
| m_nSelectItem = -1; |
| |
| switch (nChar) { |
| case FWL_VKEY_Up: |
| if (m_pList->GetCurSel() > 0) { |
| #ifdef PDF_ENABLE_XFA |
| if (m_pFillerNotify) { |
| if (m_pFillerNotify->OnPopupPreOpen(GetAttachedData(), nFlag)) |
| return false; |
| if (m_pFillerNotify->OnPopupPostOpen(GetAttachedData(), nFlag)) |
| return false; |
| } |
| #endif // PDF_ENABLE_XFA |
| if (m_pList->IsMovementKey(nChar)) { |
| if (m_pList->OnMovementKeyDown(nChar, nFlag)) |
| return false; |
| SetSelectText(); |
| } |
| } |
| return true; |
| case FWL_VKEY_Down: |
| if (m_pList->GetCurSel() < m_pList->GetCount() - 1) { |
| #ifdef PDF_ENABLE_XFA |
| if (m_pFillerNotify) { |
| if (m_pFillerNotify->OnPopupPreOpen(GetAttachedData(), nFlag)) |
| return false; |
| if (m_pFillerNotify->OnPopupPostOpen(GetAttachedData(), nFlag)) |
| return false; |
| } |
| #endif // PDF_ENABLE_XFA |
| if (m_pList->IsMovementKey(nChar)) { |
| if (m_pList->OnMovementKeyDown(nChar, nFlag)) |
| return false; |
| SetSelectText(); |
| } |
| } |
| return true; |
| } |
| |
| if (HasFlag(PCBS_ALLOWCUSTOMTEXT)) |
| return m_pEdit->OnKeyDown(nChar, nFlag); |
| |
| return false; |
| } |
| |
| bool CPWL_ComboBox::OnChar(uint16_t nChar, uint32_t nFlag) { |
| if (!m_pList) |
| return false; |
| |
| if (!m_pEdit) |
| return false; |
| |
| m_nSelectItem = -1; |
| if (HasFlag(PCBS_ALLOWCUSTOMTEXT)) |
| return m_pEdit->OnChar(nChar, nFlag); |
| |
| #ifdef PDF_ENABLE_XFA |
| if (m_pFillerNotify) { |
| if (m_pFillerNotify->OnPopupPreOpen(GetAttachedData(), nFlag)) |
| return false; |
| if (m_pFillerNotify->OnPopupPostOpen(GetAttachedData(), nFlag)) |
| return false; |
| } |
| #endif // PDF_ENABLE_XFA |
| if (!m_pList->IsChar(nChar, nFlag)) |
| return false; |
| return m_pList->OnCharNotify(nChar, nFlag); |
| } |
| |
| void CPWL_ComboBox::NotifyLButtonDown(CPWL_Wnd* child, const CFX_PointF& pos) { |
| if (child == m_pButton) { |
| SetPopup(!m_bPopup); |
| // Note, |this| may no longer be viable at this point. If more work needs to |
| // be done, check the return value of SetPopup(). |
| } |
| } |
| |
| void CPWL_ComboBox::NotifyLButtonUp(CPWL_Wnd* child, const CFX_PointF& pos) { |
| if (!m_pEdit || !m_pList || child != m_pList) |
| return; |
| |
| SetSelectText(); |
| SelectAll(); |
| m_pEdit->SetFocus(); |
| SetPopup(false); |
| // Note, |this| may no longer be viable at this point. If more work needs to |
| // be done, check the return value of SetPopup(). |
| } |
| |
| bool CPWL_ComboBox::IsPopup() const { |
| return m_bPopup; |
| } |
| |
| void CPWL_ComboBox::SetSelectText() { |
| m_pEdit->SelectAll(); |
| m_pEdit->ReplaceSel(m_pList->GetText()); |
| m_pEdit->SelectAll(); |
| m_nSelectItem = m_pList->GetCurSel(); |
| } |
| |
| void CPWL_ComboBox::SetFillerNotify(IPWL_Filler_Notify* pNotify) { |
| m_pFillerNotify = pNotify; |
| |
| if (m_pEdit) |
| m_pEdit->SetFillerNotify(pNotify); |
| |
| if (m_pList) |
| m_pList->SetFillerNotify(pNotify); |
| } |