// 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_edit.h" #include <algorithm> #include <memory> #include <sstream> #include <vector> #include "core/fpdfapi/font/cpdf_font.h" #include "core/fpdfdoc/cpvt_word.h" #include "core/fxcrt/fx_safe_types.h" #include "core/fxcrt/xml/cxml_content.h" #include "core/fxcrt/xml/cxml_element.h" #include "core/fxge/cfx_graphstatedata.h" #include "core/fxge/cfx_pathdata.h" #include "core/fxge/cfx_renderdevice.h" #include "core/fxge/fx_font.h" #include "fpdfsdk/pwl/cpwl_caret.h" #include "fpdfsdk/pwl/cpwl_edit_ctrl.h" #include "fpdfsdk/pwl/cpwl_edit_impl.h" #include "fpdfsdk/pwl/cpwl_font_map.h" #include "fpdfsdk/pwl/cpwl_scroll_bar.h" #include "fpdfsdk/pwl/cpwl_wnd.h" #include "public/fpdf_fwlevent.h" #include "third_party/base/stl_util.h" CPWL_Edit::CPWL_Edit() : m_bFocus(false) {} CPWL_Edit::~CPWL_Edit() { ASSERT(!m_bFocus); } CFX_ByteString CPWL_Edit::GetClassName() const { return PWL_CLASSNAME_EDIT; } void CPWL_Edit::SetText(const CFX_WideString& csText) { CFX_WideString swText = csText; if (!HasFlag(PES_RICH)) { m_pEdit->SetText(swText); return; } CFX_ByteString sValue = CFX_ByteString::FromUnicode(swText); std::unique_ptr<CXML_Element> pXML( CXML_Element::Parse(sValue.c_str(), sValue.GetLength())); if (!pXML) { m_pEdit->SetText(swText); return; } swText.clear(); bool bFirst = true; int32_t nCount = pXML->CountChildren(); for (int32_t i = 0; i < nCount; i++) { CXML_Element* pSubElement = ToElement(pXML->GetChild(i)); if (!pSubElement || !pSubElement->GetTagName().EqualNoCase("p")) continue; CFX_WideString swSection; int nSubChild = pSubElement->CountChildren(); for (int32_t j = 0; j < nSubChild; j++) { CXML_Content* pSubContent = ToContent(pSubElement->GetChild(j)); if (pSubContent) swSection += pSubContent->m_Content; } if (bFirst) bFirst = false; else swText += FWL_VKEY_Return; swText += swSection; } m_pEdit->SetText(swText); } void CPWL_Edit::RePosChildWnd() { if (CPWL_ScrollBar* pVSB = GetVScrollBar()) { CFX_FloatRect rcWindow = m_rcOldWindow; CFX_FloatRect rcVScroll = CFX_FloatRect(rcWindow.right, rcWindow.bottom, rcWindow.right + PWL_SCROLLBAR_WIDTH, rcWindow.top); pVSB->Move(rcVScroll, true, false); } if (m_pEditCaret && !HasFlag(PES_TEXTOVERFLOW)) { CFX_FloatRect rect = GetClientRect(); if (!rect.IsEmpty()) { // +1 for caret beside border rect.Inflate(1.0f, 1.0f); rect.Normalize(); } m_pEditCaret->SetClipRect(rect); } CPWL_EditCtrl::RePosChildWnd(); } CFX_FloatRect CPWL_Edit::GetClientRect() const { float width = static_cast<float>(GetBorderWidth() + GetInnerBorderWidth()); CFX_FloatRect rcClient = GetWindowRect().GetDeflated(width, width); if (CPWL_ScrollBar* pVSB = GetVScrollBar()) { if (pVSB->IsVisible()) { rcClient.right -= PWL_SCROLLBAR_WIDTH; } } return rcClient; } void CPWL_Edit::SetAlignFormatV(PWL_EDIT_ALIGNFORMAT_V nFormat, bool bPaint) { m_pEdit->SetAlignmentV((int32_t)nFormat, bPaint); } bool CPWL_Edit::CanSelectAll() const { return GetSelectWordRange() != m_pEdit->GetWholeWordRange(); } bool CPWL_Edit::CanClear() const { return !IsReadOnly() && m_pEdit->IsSelected(); } bool CPWL_Edit::CanCopy() const { return !HasFlag(PES_PASSWORD) && !HasFlag(PES_NOREAD) && m_pEdit->IsSelected(); } bool CPWL_Edit::CanCut() const { return CanCopy() && !IsReadOnly(); } void CPWL_Edit::CutText() { if (!CanCut()) return; m_pEdit->ClearSelection(); } void CPWL_Edit::OnCreated() { CPWL_EditCtrl::OnCreated(); if (CPWL_ScrollBar* pScroll = GetVScrollBar()) { pScroll->RemoveFlag(PWS_AUTOTRANSPARENT); pScroll->SetTransparency(255); } SetParamByFlag(); m_rcOldWindow = GetWindowRect(); m_pEdit->SetOprNotify(this); m_pEdit->EnableOprNotify(true); } void CPWL_Edit::SetParamByFlag() { if (HasFlag(PES_RIGHT)) { m_pEdit->SetAlignmentH(2, false); } else if (HasFlag(PES_MIDDLE)) { m_pEdit->SetAlignmentH(1, false); } else { m_pEdit->SetAlignmentH(0, false); } if (HasFlag(PES_BOTTOM)) { m_pEdit->SetAlignmentV(2, false); } else if (HasFlag(PES_CENTER)) { m_pEdit->SetAlignmentV(1, false); } else { m_pEdit->SetAlignmentV(0, false); } if (HasFlag(PES_PASSWORD)) { m_pEdit->SetPasswordChar('*', false); } m_pEdit->SetMultiLine(HasFlag(PES_MULTILINE), false); m_pEdit->SetAutoReturn(HasFlag(PES_AUTORETURN), false); m_pEdit->SetAutoFontSize(HasFlag(PWS_AUTOFONTSIZE), false); m_pEdit->SetAutoScroll(HasFlag(PES_AUTOSCROLL), false); m_pEdit->EnableUndo(HasFlag(PES_UNDO)); if (HasFlag(PES_TEXTOVERFLOW)) { SetClipRect(CFX_FloatRect()); m_pEdit->SetTextOverflow(true, false); } else { if (m_pEditCaret) { CFX_FloatRect rect = GetClientRect(); if (!rect.IsEmpty()) { // +1 for caret beside border rect.Inflate(1.0f, 1.0f); rect.Normalize(); } m_pEditCaret->SetClipRect(rect); } } } void CPWL_Edit::DrawThisAppearance(CFX_RenderDevice* pDevice, CFX_Matrix* pUser2Device) { CPWL_Wnd::DrawThisAppearance(pDevice, pUser2Device); CFX_FloatRect rcClient = GetClientRect(); int32_t nCharArray = m_pEdit->GetCharArray(); FX_SAFE_INT32 nCharArraySafe = nCharArray; nCharArraySafe -= 1; nCharArraySafe *= 2; if (nCharArray > 0 && nCharArraySafe.IsValid()) { switch (GetBorderStyle()) { case BorderStyle::SOLID: { CFX_GraphStateData gsd; gsd.m_LineWidth = (float)GetBorderWidth(); CFX_PathData path; for (int32_t i = 0; i < nCharArray - 1; i++) { path.AppendPoint( CFX_PointF( rcClient.left + ((rcClient.right - rcClient.left) / nCharArray) * (i + 1), rcClient.bottom), FXPT_TYPE::MoveTo, false); path.AppendPoint( CFX_PointF( rcClient.left + ((rcClient.right - rcClient.left) / nCharArray) * (i + 1), rcClient.top), FXPT_TYPE::LineTo, false); } if (!path.GetPoints().empty()) { pDevice->DrawPath(&path, pUser2Device, &gsd, 0, GetBorderColor().ToFXColor(255), FXFILL_ALTERNATE); } break; } case BorderStyle::DASH: { CFX_GraphStateData gsd; gsd.m_LineWidth = (float)GetBorderWidth(); gsd.SetDashCount(2); gsd.m_DashArray[0] = (float)GetBorderDash().nDash; gsd.m_DashArray[1] = (float)GetBorderDash().nGap; gsd.m_DashPhase = (float)GetBorderDash().nPhase; CFX_PathData path; for (int32_t i = 0; i < nCharArray - 1; i++) { path.AppendPoint( CFX_PointF( rcClient.left + ((rcClient.right - rcClient.left) / nCharArray) * (i + 1), rcClient.bottom), FXPT_TYPE::MoveTo, false); path.AppendPoint( CFX_PointF( rcClient.left + ((rcClient.right - rcClient.left) / nCharArray) * (i + 1), rcClient.top), FXPT_TYPE::LineTo, false); } if (!path.GetPoints().empty()) { pDevice->DrawPath(&path, pUser2Device, &gsd, 0, GetBorderColor().ToFXColor(255), FXFILL_ALTERNATE); } break; } default: break; } } CFX_FloatRect rcClip; CPVT_WordRange wrRange = m_pEdit->GetVisibleWordRange(); CPVT_WordRange* pRange = nullptr; if (!HasFlag(PES_TEXTOVERFLOW)) { rcClip = GetClientRect(); pRange = &wrRange; } CFX_SystemHandler* pSysHandler = GetSystemHandler(); CPWL_EditImpl::DrawEdit(pDevice, pUser2Device, m_pEdit.get(), GetTextColor().ToFXColor(GetTransparency()), rcClip, CFX_PointF(), pRange, pSysHandler, m_pFormFiller.Get()); } bool CPWL_Edit::OnLButtonDown(const CFX_PointF& point, uint32_t nFlag) { CPWL_Wnd::OnLButtonDown(point, nFlag); if (HasFlag(PES_TEXTOVERFLOW) || ClientHitTest(point)) { if (m_bMouseDown) InvalidateRect(); m_bMouseDown = true; SetCapture(); m_pEdit->OnMouseDown(point, IsSHIFTpressed(nFlag), IsCTRLpressed(nFlag)); } return true; } bool CPWL_Edit::OnLButtonDblClk(const CFX_PointF& point, uint32_t nFlag) { CPWL_Wnd::OnLButtonDblClk(point, nFlag); if (HasFlag(PES_TEXTOVERFLOW) || ClientHitTest(point)) { m_pEdit->SelectAll(); } return true; } bool CPWL_Edit::OnRButtonUp(const CFX_PointF& point, uint32_t nFlag) { if (m_bMouseDown) return false; CPWL_Wnd::OnRButtonUp(point, nFlag); if (!HasFlag(PES_TEXTOVERFLOW) && !ClientHitTest(point)) return true; CFX_SystemHandler* pSH = GetSystemHandler(); if (!pSH) return false; SetFocus(); return false; } void CPWL_Edit::OnSetFocus() { SetEditCaret(true); if (!IsReadOnly()) { if (IPWL_FocusHandler* pFocusHandler = GetFocusHandler()) pFocusHandler->OnSetFocus(this); } m_bFocus = true; } void CPWL_Edit::OnKillFocus() { CPWL_ScrollBar* pScroll = GetVScrollBar(); if (pScroll && pScroll->IsVisible()) { pScroll->SetVisible(false); Move(m_rcOldWindow, true, true); } m_pEdit->SelectNone(); SetCaret(false, CFX_PointF(), CFX_PointF()); SetCharSet(FX_CHARSET_ANSI); m_bFocus = false; } void CPWL_Edit::SetCharSpace(float fCharSpace) { m_pEdit->SetCharSpace(fCharSpace); } CPVT_WordRange CPWL_Edit::GetSelectWordRange() const { if (m_pEdit->IsSelected()) { int32_t nStart = -1; int32_t nEnd = -1; m_pEdit->GetSelection(nStart, nEnd); CPVT_WordPlace wpStart = m_pEdit->WordIndexToWordPlace(nStart); CPVT_WordPlace wpEnd = m_pEdit->WordIndexToWordPlace(nEnd); return CPVT_WordRange(wpStart, wpEnd); } return CPVT_WordRange(); } CFX_PointF CPWL_Edit::GetWordRightBottomPoint(const CPVT_WordPlace& wpWord) { CPWL_EditImpl_Iterator* pIterator = m_pEdit->GetIterator(); CPVT_WordPlace wpOld = pIterator->GetAt(); pIterator->SetAt(wpWord); CFX_PointF pt; CPVT_Word word; if (pIterator->GetWord(word)) { pt = CFX_PointF(word.ptWord.x + word.fWidth, word.ptWord.y + word.fDescent); } pIterator->SetAt(wpOld); return pt; } bool CPWL_Edit::IsTextFull() const { return m_pEdit->IsTextFull(); } float CPWL_Edit::GetCharArrayAutoFontSize(CPDF_Font* pFont, const CFX_FloatRect& rcPlate, int32_t nCharArray) { if (pFont && !pFont->IsStandardFont()) { FX_RECT rcBBox; pFont->GetFontBBox(rcBBox); CFX_FloatRect rcCell = rcPlate; float xdiv = rcCell.Width() / nCharArray * 1000.0f / rcBBox.Width(); float ydiv = -rcCell.Height() * 1000.0f / rcBBox.Height(); return xdiv < ydiv ? xdiv : ydiv; } return 0.0f; } void CPWL_Edit::SetCharArray(int32_t nCharArray) { if (HasFlag(PES_CHARARRAY) && nCharArray > 0) { m_pEdit->SetCharArray(nCharArray); m_pEdit->SetTextOverflow(true, true); if (HasFlag(PWS_AUTOFONTSIZE)) { if (IPVT_FontMap* pFontMap = GetFontMap()) { float fFontSize = GetCharArrayAutoFontSize(pFontMap->GetPDFFont(0), GetClientRect(), nCharArray); if (fFontSize > 0.0f) { m_pEdit->SetAutoFontSize(false, true); m_pEdit->SetFontSize(fFontSize); } } } } } void CPWL_Edit::SetLimitChar(int32_t nLimitChar) { m_pEdit->SetLimitChar(nLimitChar); } void CPWL_Edit::ReplaceSel(const CFX_WideString& wsText) { m_pEdit->ClearSelection(); m_pEdit->InsertText(wsText, FX_CHARSET_Default); } CFX_FloatRect CPWL_Edit::GetFocusRect() const { return CFX_FloatRect(); } bool CPWL_Edit::IsVScrollBarVisible() const { if (CPWL_ScrollBar* pScroll = GetVScrollBar()) return pScroll->IsVisible(); return false; } bool CPWL_Edit::OnKeyDown(uint16_t nChar, uint32_t nFlag) { if (m_bMouseDown) return true; if (nChar == FWL_VKEY_Delete) { if (m_pFillerNotify) { CFX_WideString strChange; CFX_WideString strChangeEx; int nSelStart = 0; int nSelEnd = 0; GetSelection(nSelStart, nSelEnd); if (nSelStart == nSelEnd) nSelEnd = nSelStart + 1; bool bRC; bool bExit; std::tie(bRC, bExit) = m_pFillerNotify->OnBeforeKeyStroke( GetAttachedData(), strChange, strChangeEx, nSelStart, nSelEnd, true, nFlag); if (!bRC) return false; if (bExit) return false; } } bool bRet = CPWL_EditCtrl::OnKeyDown(nChar, nFlag); // In case of implementation swallow the OnKeyDown event. if (IsProceedtoOnChar(nChar, nFlag)) return true; return bRet; } /** *In case of implementation swallow the OnKeyDown event. *If the event is swallowed, implementation may do other unexpected things, *which is not the control means to do. */ bool CPWL_Edit::IsProceedtoOnChar(uint16_t nKeyCode, uint32_t nFlag) { bool bCtrl = IsCTRLpressed(nFlag); bool bAlt = IsALTpressed(nFlag); if (bCtrl && !bAlt) { // hot keys for edit control. switch (nKeyCode) { case 'C': case 'V': case 'X': case 'A': case 'Z': return true; default: break; } } // control characters. switch (nKeyCode) { case FWL_VKEY_Escape: case FWL_VKEY_Back: case FWL_VKEY_Return: case FWL_VKEY_Space: return true; default: return false; } } bool CPWL_Edit::OnChar(uint16_t nChar, uint32_t nFlag) { if (m_bMouseDown) return true; bool bRC = true; bool bExit = false; if (!IsCTRLpressed(nFlag)) { if (m_pFillerNotify) { CFX_WideString swChange; int nSelStart = 0; int nSelEnd = 0; GetSelection(nSelStart, nSelEnd); switch (nChar) { case FWL_VKEY_Back: if (nSelStart == nSelEnd) nSelStart = nSelEnd - 1; break; case FWL_VKEY_Return: break; default: swChange += nChar; break; } CFX_WideString strChangeEx; std::tie(bRC, bExit) = m_pFillerNotify->OnBeforeKeyStroke( GetAttachedData(), swChange, strChangeEx, nSelStart, nSelEnd, true, nFlag); } } if (!bRC) return true; if (bExit) return false; if (IPVT_FontMap* pFontMap = GetFontMap()) { int32_t nOldCharSet = GetCharSet(); int32_t nNewCharSet = pFontMap->CharSetFromUnicode(nChar, FX_CHARSET_Default); if (nOldCharSet != nNewCharSet) { SetCharSet(nNewCharSet); } } return CPWL_EditCtrl::OnChar(nChar, nFlag); } bool CPWL_Edit::OnMouseWheel(short zDelta, const CFX_PointF& point, uint32_t nFlag) { if (HasFlag(PES_MULTILINE)) { CFX_PointF ptScroll = GetScrollPos(); if (zDelta > 0) { ptScroll.y += GetFontSize(); } else { ptScroll.y -= GetFontSize(); } SetScrollPos(ptScroll); return true; } return false; } void CPWL_Edit::OnInsertReturn(const CPVT_WordPlace& place, const CPVT_WordPlace& oldplace) { if (HasFlag(PES_SPELLCHECK)) { m_pEdit->RefreshWordRange(CombineWordRange(GetLatinWordsRange(oldplace), GetLatinWordsRange(place))); } } void CPWL_Edit::OnBackSpace(const CPVT_WordPlace& place, const CPVT_WordPlace& oldplace) { if (HasFlag(PES_SPELLCHECK)) { m_pEdit->RefreshWordRange(CombineWordRange(GetLatinWordsRange(oldplace), GetLatinWordsRange(place))); } } void CPWL_Edit::OnDelete(const CPVT_WordPlace& place, const CPVT_WordPlace& oldplace) { if (HasFlag(PES_SPELLCHECK)) { m_pEdit->RefreshWordRange(CombineWordRange(GetLatinWordsRange(oldplace), GetLatinWordsRange(place))); } } void CPWL_Edit::OnClear(const CPVT_WordPlace& place, const CPVT_WordPlace& oldplace) { if (HasFlag(PES_SPELLCHECK)) { m_pEdit->RefreshWordRange(CombineWordRange(GetLatinWordsRange(oldplace), GetLatinWordsRange(place))); } } void CPWL_Edit::OnInsertWord(const CPVT_WordPlace& place, const CPVT_WordPlace& oldplace) { if (HasFlag(PES_SPELLCHECK)) { m_pEdit->RefreshWordRange(CombineWordRange(GetLatinWordsRange(oldplace), GetLatinWordsRange(place))); } } void CPWL_Edit::OnInsertText(const CPVT_WordPlace& place, const CPVT_WordPlace& oldplace) { if (HasFlag(PES_SPELLCHECK)) { m_pEdit->RefreshWordRange(CombineWordRange(GetLatinWordsRange(oldplace), GetLatinWordsRange(place))); } } CPVT_WordRange CPWL_Edit::CombineWordRange(const CPVT_WordRange& wr1, const CPVT_WordRange& wr2) { return CPVT_WordRange(std::min(wr1.BeginPos, wr2.BeginPos), std::max(wr1.EndPos, wr2.EndPos)); } CPVT_WordRange CPWL_Edit::GetLatinWordsRange(const CFX_PointF& point) const { return GetSameWordsRange(m_pEdit->SearchWordPlace(point), true, false); } CPVT_WordRange CPWL_Edit::GetLatinWordsRange( const CPVT_WordPlace& place) const { return GetSameWordsRange(place, true, false); } CPVT_WordRange CPWL_Edit::GetArabicWordsRange( const CPVT_WordPlace& place) const { return GetSameWordsRange(place, false, true); } #define PWL_ISARABICWORD(word) \ ((word >= 0x0600 && word <= 0x06FF) || (word >= 0xFB50 && word <= 0xFEFC)) CPVT_WordRange CPWL_Edit::GetSameWordsRange(const CPVT_WordPlace& place, bool bLatin, bool bArabic) const { CPVT_WordRange range; CPWL_EditImpl_Iterator* pIterator = m_pEdit->GetIterator(); CPVT_Word wordinfo; CPVT_WordPlace wpStart(place), wpEnd(place); pIterator->SetAt(place); if (bLatin) { while (pIterator->NextWord()) { if (!pIterator->GetWord(wordinfo) || !FX_EDIT_ISLATINWORD(wordinfo.Word)) { break; } wpEnd = pIterator->GetAt(); } } else if (bArabic) { while (pIterator->NextWord()) { if (!pIterator->GetWord(wordinfo) || !PWL_ISARABICWORD(wordinfo.Word)) break; wpEnd = pIterator->GetAt(); } } pIterator->SetAt(place); if (bLatin) { do { if (!pIterator->GetWord(wordinfo) || !FX_EDIT_ISLATINWORD(wordinfo.Word)) { break; } wpStart = pIterator->GetAt(); } while (pIterator->PrevWord()); } else if (bArabic) { do { if (!pIterator->GetWord(wordinfo) || !PWL_ISARABICWORD(wordinfo.Word)) break; wpStart = pIterator->GetAt(); } while (pIterator->PrevWord()); } range.Set(wpStart, wpEnd); return range; }