path: root/core/src/fpdfdoc/doc_formcontrol.cpp

// 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 "../../include/fpdfdoc/fpdf_doc.h"
CPDF_FormControl::CPDF_FormControl(CPDF_FormField* pField,
                                   CPDF_Dictionary* pWidgetDict) {
  m_pField = pField;
  m_pWidgetDict = pWidgetDict;
  m_pForm = m_pField->m_pForm;
}
CFX_FloatRect CPDF_FormControl::GetRect() {
  return m_pWidgetDict->GetRect("Rect");
}
CFX_ByteString CPDF_FormControl::GetOnStateName() {
  ASSERT(GetType() == CPDF_FormField::CheckBox ||
         GetType() == CPDF_FormField::RadioButton);
  CFX_ByteString csOn;
  CPDF_Dictionary* pAP = m_pWidgetDict->GetDict("AP");
  if (pAP == NULL) {
    return csOn;
  }
  CPDF_Dictionary* pN = pAP->GetDict("N");
  if (pN == NULL) {
    return csOn;
  }
  FX_POSITION pos = pN->GetStartPos();
  while (pos) {
    pN->GetNextElement(pos, csOn);
    if (csOn != "Off") {
      return csOn;
    }
  }
  return CFX_ByteString();
}
void CPDF_FormControl::SetOnStateName(const CFX_ByteString& csOn) {
  ASSERT(GetType() == CPDF_FormField::CheckBox ||
         GetType() == CPDF_FormField::RadioButton);
  CFX_ByteString csValue = csOn;
  if (csValue.IsEmpty()) {
    csValue = "Yes";
  }
  if (csValue == "Off") {
    csValue = "Yes";
  }
  CFX_ByteString csAS = m_pWidgetDict->GetString("AS", "Off");
  if (csAS != "Off") {
    m_pWidgetDict->SetAtName("AS", csValue);
  }
  CPDF_Dictionary* pAP = m_pWidgetDict->GetDict("AP");
  if (pAP == NULL) {
    return;
  }
  FX_POSITION pos1 = pAP->GetStartPos();
  while (pos1) {
    CFX_ByteString csKey1;
    CPDF_Object* pObj1 = pAP->GetNextElement(pos1, csKey1);
    if (pObj1 == NULL) {
      continue;
    }
    CPDF_Object* pObjDirect1 = pObj1->GetDirect();
    if (pObjDirect1->GetType() != PDFOBJ_DICTIONARY) {
      continue;
    }
    CPDF_Dictionary* pSubDict = (CPDF_Dictionary*)pObjDirect1;
    FX_POSITION pos2 = pSubDict->GetStartPos();
    while (pos2) {
      CFX_ByteString csKey2;
      CPDF_Object* pObj2 = pSubDict->GetNextElement(pos2, csKey2);
      if (pObj2 == NULL) {
        continue;
      }
      if (csKey2 != "Off") {
        pSubDict->ReplaceKey(csKey2, csValue);
        break;
      }
    }
  }
}
CFX_ByteString CPDF_FormControl::GetCheckedAPState() {
  ASSERT(GetType() == CPDF_FormField::CheckBox ||
         GetType() == CPDF_FormField::RadioButton);
  CFX_ByteString csOn = GetOnStateName();
  if (GetType() == CPDF_FormField::RadioButton ||
      GetType() == CPDF_FormField::CheckBox) {
    CPDF_Object* pOpt = FPDF_GetFieldAttr(m_pField->m_pDict, "Opt");
    if (pOpt != NULL && pOpt->GetType() == PDFOBJ_ARRAY) {
      int iIndex = m_pField->GetControlIndex(this);
      csOn.Format("%d", iIndex);
    }
  }
  if (csOn.IsEmpty()) {
    csOn = "Yes";
  }
  return csOn;
}
CFX_WideString CPDF_FormControl::GetExportValue() {
  ASSERT(GetType() == CPDF_FormField::CheckBox ||
         GetType() == CPDF_FormField::RadioButton);
  CFX_ByteString csOn = GetOnStateName();
  if (GetType() == CPDF_FormField::RadioButton ||
      GetType() == CPDF_FormField::CheckBox) {
    CPDF_Object* pOpt = FPDF_GetFieldAttr(m_pField->m_pDict, "Opt");
    if (pOpt != NULL && pOpt->GetType() == PDFOBJ_ARRAY) {
      int iIndex = m_pField->GetControlIndex(this);
      csOn = ((CPDF_Array*)pOpt)->GetString(iIndex);
    }
  }
  if (csOn.IsEmpty()) {
    csOn = "Yes";
  }
  CFX_WideString csWOn = PDF_DecodeText(csOn);
  return csWOn;
}
FX_BOOL CPDF_FormControl::IsChecked() {
  ASSERT(GetType() == CPDF_FormField::CheckBox ||
         GetType() == CPDF_FormField::RadioButton);
  CFX_ByteString csOn = GetOnStateName();
  CFX_ByteString csAS = m_pWidgetDict->GetString("AS");
  return csAS == csOn;
}
FX_BOOL CPDF_FormControl::IsDefaultChecked() {
  ASSERT(GetType() == CPDF_FormField::CheckBox ||
         GetType() == CPDF_FormField::RadioButton);
  CPDF_Object* pDV = FPDF_GetFieldAttr(m_pField->m_pDict, "DV");
  if (pDV == NULL) {
    return FALSE;
  }
  CFX_ByteString csDV = pDV->GetString();
  CFX_ByteString csOn = GetOnStateName();
  return (csDV == csOn);
}
void CPDF_FormControl::CheckControl(FX_BOOL bChecked) {
  ASSERT(GetType() == CPDF_FormField::CheckBox ||
         GetType() == CPDF_FormField::RadioButton);
  CFX_ByteString csOn = GetOnStateName();
  CFX_ByteString csOldAS = m_pWidgetDict->GetString("AS", "Off");
  CFX_ByteString csAS = "Off";
  if (bChecked) {
    csAS = csOn;
  }
  if (csOldAS == csAS) {
    return;
  }
  m_pWidgetDict->SetAtName("AS", csAS);
  m_pForm->m_bUpdated = TRUE;
}
CPDF_Stream* FPDFDOC_GetAnnotAP(CPDF_Dictionary* pAnnotDict,
                                CPDF_Annot::AppearanceMode mode);
void CPDF_FormControl::DrawControl(CFX_RenderDevice* pDevice,
                                   CFX_AffineMatrix* pMatrix,
                                   CPDF_Page* pPage,
                                   CPDF_Annot::AppearanceMode mode,
                                   const CPDF_RenderOptions* pOptions) {
  if (m_pWidgetDict->GetInteger("F") & ANNOTFLAG_HIDDEN) {
    return;
  }
  CPDF_Stream* pStream = FPDFDOC_GetAnnotAP(m_pWidgetDict, mode);
  if (pStream == NULL) {
    return;
  }
  CFX_FloatRect form_bbox = pStream->GetDict()->GetRect("BBox");
  CFX_AffineMatrix form_matrix = pStream->GetDict()->GetMatrix("Matrix");
  form_matrix.TransformRect(form_bbox);
  CFX_FloatRect arect = m_pWidgetDict->GetRect("Rect");
  CFX_AffineMatrix matrix;
  matrix.MatchRect(arect, form_bbox);
  matrix.Concat(*pMatrix);
  CPDF_Form form(m_pField->m_pForm->m_pDocument,
                 m_pField->m_pForm->m_pFormDict->GetDict("DR"), pStream);
  form.ParseContent(NULL, NULL, NULL, NULL);
  CPDF_RenderContext context;
  context.Create(pPage);
  context.DrawObjectList(pDevice, &form, &matrix, pOptions);
}
const FX_CHAR* g_sHighlightingMode[] = {"N", "I", "O", "P", "T", ""};
CPDF_FormControl::HighlightingMode CPDF_FormControl::GetHighlightingMode() {
  if (m_pWidgetDict == NULL) {
    return Invert;
  }
  CFX_ByteString csH = m_pWidgetDict->GetString("H", "I");
  int i = 0;
  while (g_sHighlightingMode[i][0] != '\0') {
    if (csH.Equal(g_sHighlightingMode[i])) {
      return (HighlightingMode)i;
    }
    i++;
  }
  return Invert;
}
CPDF_ApSettings CPDF_FormControl::GetMK(FX_BOOL bCreate) {
  if (!m_pWidgetDict) {
    return NULL;
  }
  CPDF_ApSettings mk = m_pWidgetDict->GetDict(FX_BSTRC("MK"));
  if (!mk && bCreate) {
    mk = CPDF_Dictionary::Create();
    if (mk == NULL) {
      return NULL;
    }
    m_pWidgetDict->SetAt(FX_BSTRC("MK"), mk);
  }
  return mk;
}
FX_BOOL CPDF_FormControl::HasMKEntry(CFX_ByteString csEntry) {
  CPDF_ApSettings mk = GetMK(FALSE);
  return mk.HasMKEntry(csEntry);
}
int CPDF_FormControl::GetRotation() {
  CPDF_ApSettings mk = GetMK(FALSE);
  return mk.GetRotation();
}
FX_ARGB CPDF_FormControl::GetColor(int& iColorType, CFX_ByteString csEntry) {
  CPDF_ApSettings mk = GetMK(FALSE);
  return mk.GetColor(iColorType, csEntry);
}
FX_FLOAT CPDF_FormControl::GetOriginalColor(int index, CFX_ByteString csEntry) {
  CPDF_ApSettings mk = GetMK(FALSE);
  return mk.GetOriginalColor(index, csEntry);
}
void CPDF_FormControl::GetOriginalColor(int& iColorType,
                                        FX_FLOAT fc[4],
                                        CFX_ByteString csEntry) {
  CPDF_ApSettings mk = GetMK(FALSE);
  mk.GetOriginalColor(iColorType, fc, csEntry);
}
CFX_WideString CPDF_FormControl::GetCaption(CFX_ByteString csEntry) {
  CPDF_ApSettings mk = GetMK(FALSE);
  return mk.GetCaption(csEntry);
}
CPDF_Stream* CPDF_FormControl::GetIcon(CFX_ByteString csEntry) {
  CPDF_ApSettings mk = GetMK(FALSE);
  return mk.GetIcon(csEntry);
}
CPDF_IconFit CPDF_FormControl::GetIconFit() {
  CPDF_ApSettings mk = GetMK(FALSE);
  return mk.GetIconFit();
}
int CPDF_FormControl::GetTextPosition() {
  CPDF_ApSettings mk = GetMK(FALSE);
  return mk.GetTextPosition();
}
CPDF_Action CPDF_FormControl::GetAction() {
  if (!m_pWidgetDict) {
    return CPDF_Action();
  }
  if (m_pWidgetDict->KeyExist("A")) {
    return CPDF_Action(m_pWidgetDict->GetDict("A"));
  }
  CPDF_Object* pObj = FPDF_GetFieldAttr(m_pField->m_pDict, "A");
  if (!pObj) {
    return CPDF_Action();
  }
  return CPDF_Action(pObj->GetDict());
}
CPDF_AAction CPDF_FormControl::GetAdditionalAction() {
  if (!m_pWidgetDict) {
    return nullptr;
  }
  if (m_pWidgetDict->KeyExist("AA")) {
    return m_pWidgetDict->GetDict("AA");
  }
  return m_pField->GetAdditionalAction();
}
CPDF_DefaultAppearance CPDF_FormControl::GetDefaultAppearance() {
  if (!m_pWidgetDict) {
    return CFX_ByteString();
  }
  if (m_pWidgetDict->KeyExist("DA")) {
    return m_pWidgetDict->GetString("DA");
  }
  CPDF_Object* pObj = FPDF_GetFieldAttr(m_pField->m_pDict, "DA");
  if (!pObj) {
    return m_pField->m_pForm->GetDefaultAppearance();
  }
  return pObj->GetString();
}

CPDF_Font* CPDF_FormControl::GetDefaultControlFont() {
  CPDF_DefaultAppearance cDA = GetDefaultAppearance();
  CFX_ByteString csFontNameTag;
  FX_FLOAT fFontSize;
  cDA.GetFont(csFontNameTag, fFontSize);
  if (csFontNameTag.IsEmpty())
    return nullptr;

  CPDF_Object* pObj = FPDF_GetFieldAttr(m_pWidgetDict, "DR");
  if (pObj && pObj->GetType() == PDFOBJ_DICTIONARY) {
    CPDF_Dictionary* pFonts = ((CPDF_Dictionary*)pObj)->GetDict("Font");
    if (pFonts) {
      CPDF_Dictionary* pElement = pFonts->GetDict(csFontNameTag);
      if (pElement) {
        CPDF_Font* pFont = m_pField->m_pForm->m_pDocument->LoadFont(pElement);
        if (pFont) {
          return pFont;
        }
      }
    }
  }
  if (CPDF_Font* pFormFont = m_pField->m_pForm->GetFormFont(csFontNameTag))
    return pFormFont;

  CPDF_Dictionary* pPageDict = m_pWidgetDict->GetDict("P");
  pObj = FPDF_GetFieldAttr(pPageDict, "Resources");
  if (pObj && pObj->GetType() == PDFOBJ_DICTIONARY) {
    CPDF_Dictionary* pFonts = ((CPDF_Dictionary*)pObj)->GetDict("Font");
    if (pFonts) {
      CPDF_Dictionary* pElement = pFonts->GetDict(csFontNameTag);
      if (pElement) {
        CPDF_Font* pFont = m_pField->m_pForm->m_pDocument->LoadFont(pElement);
        if (pFont) {
          return pFont;
        }
      }
    }
  }
  return nullptr;
}

int CPDF_FormControl::GetControlAlignment() {
  if (!m_pWidgetDict) {
    return 0;
  }
  if (m_pWidgetDict->KeyExist("Q")) {
    return m_pWidgetDict->GetInteger("Q", 0);
  }
  CPDF_Object* pObj = FPDF_GetFieldAttr(m_pField->m_pDict, "Q");
  if (pObj == NULL) {
    return m_pField->m_pForm->GetFormAlignment();
  }
  return pObj->GetInteger();
}
FX_BOOL CPDF_ApSettings::HasMKEntry(const CFX_ByteStringC& csEntry) {
  if (m_pDict == NULL) {
    return FALSE;
  }
  return m_pDict->KeyExist(csEntry);
}
int CPDF_ApSettings::GetRotation() {
  if (m_pDict == NULL) {
    return 0;
  }
  return m_pDict->GetInteger(FX_BSTRC("R"));
}
FX_ARGB CPDF_ApSettings::GetColor(int& iColorType,
                                  const CFX_ByteStringC& csEntry) {
  iColorType = COLORTYPE_TRANSPARENT;
  if (m_pDict == NULL) {
    return 0;
  }
  FX_ARGB color = 0;
  CPDF_Array* pEntry = m_pDict->GetArray(csEntry);
  if (pEntry == NULL) {
    return color;
  }
  FX_DWORD dwCount = pEntry->GetCount();
  if (dwCount == 1) {
    iColorType = COLORTYPE_GRAY;
    FX_FLOAT g = pEntry->GetNumber(0) * 255;
    color = ArgbEncode(255, (int)g, (int)g, (int)g);
  } else if (dwCount == 3) {
    iColorType = COLORTYPE_RGB;
    FX_FLOAT r = pEntry->GetNumber(0) * 255;
    FX_FLOAT g = pEntry->GetNumber(1) * 255;
    FX_FLOAT b = pEntry->GetNumber(2) * 255;
    color = ArgbEncode(255, (int)r, (int)g, (int)b);
  } else if (dwCount == 4) {
    iColorType = COLORTYPE_CMYK;
    FX_FLOAT c = pEntry->GetNumber(0);
    FX_FLOAT m = pEntry->GetNumber(1);
    FX_FLOAT y = pEntry->GetNumber(2);
    FX_FLOAT k = pEntry->GetNumber(3);
    FX_FLOAT r = 1.0f - FX_MIN(1.0f, c + k);
    FX_FLOAT g = 1.0f - FX_MIN(1.0f, m + k);
    FX_FLOAT b = 1.0f - FX_MIN(1.0f, y + k);
    color = ArgbEncode(255, (int)(r * 255), (int)(g * 255), (int)(b * 255));
  }
  return color;
}
FX_FLOAT CPDF_ApSettings::GetOriginalColor(int index,
                                           const CFX_ByteStringC& csEntry) {
  if (m_pDict == NULL) {
    return 0;
  }
  CPDF_Array* pEntry = m_pDict->GetArray(csEntry);
  if (pEntry != NULL) {
    return pEntry->GetNumber(index);
  }
  return 0;
}
void CPDF_ApSettings::GetOriginalColor(int& iColorType,
                                       FX_FLOAT fc[4],
                                       const CFX_ByteStringC& csEntry) {
  iColorType = COLORTYPE_TRANSPARENT;
  for (int i = 0; i < 4; i++) {
    fc[i] = 0;
  }
  if (m_pDict == NULL) {
    return;
  }
  CPDF_Array* pEntry = m_pDict->GetArray(csEntry);
  if (pEntry == NULL) {
    return;
  }
  FX_DWORD dwCount = pEntry->GetCount();
  if (dwCount == 1) {
    iColorType = COLORTYPE_GRAY;
    fc[0] = pEntry->GetNumber(0);
  } else if (dwCount == 3) {
    iColorType = COLORTYPE_RGB;
    fc[0] = pEntry->GetNumber(0);
    fc[1] = pEntry->GetNumber(1);
    fc[2] = pEntry->GetNumber(2);
  } else if (dwCount == 4) {
    iColorType = COLORTYPE_CMYK;
    fc[0] = pEntry->GetNumber(0);
    fc[1] = pEntry->GetNumber(1);
    fc[2] = pEntry->GetNumber(2);
    fc[3] = pEntry->GetNumber(3);
  }
}
CFX_WideString CPDF_ApSettings::GetCaption(const CFX_ByteStringC& csEntry) {
  CFX_WideString csCaption;
  if (m_pDict == NULL) {
    return csCaption;
  }
  return m_pDict->GetUnicodeText(csEntry);
}
CPDF_Stream* CPDF_ApSettings::GetIcon(const CFX_ByteStringC& csEntry) {
  if (m_pDict == NULL) {
    return NULL;
  }
  return m_pDict->GetStream(csEntry);
}
CPDF_IconFit CPDF_ApSettings::GetIconFit() {
  if (m_pDict == NULL) {
    return NULL;
  }
  return m_pDict->GetDict(FX_BSTRC("IF"));
}
int CPDF_ApSettings::GetTextPosition() {
  if (m_pDict == NULL) {
    return TEXTPOS_CAPTION;
  }
  return m_pDict->GetInteger(FX_BSTRC("TP"), TEXTPOS_CAPTION);
}