Home | History | Annotate | Download | only in fpdfdoc 
      1 // Copyright 2016 PDFium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
      6 
      7 #include "core/fpdfdoc/cpdf_apsettings.h"
      8 
      9 #include <algorithm>
     10 
     11 #include "core/fpdfapi/parser/cpdf_array.h"
     12 #include "core/fpdfapi/parser/cpdf_dictionary.h"
     13 #include "core/fpdfdoc/cpdf_formcontrol.h"
     14 
     15 CPDF_ApSettings::CPDF_ApSettings(CPDF_Dictionary* pDict) : m_pDict(pDict) {}
     16 
     17 bool CPDF_ApSettings::HasMKEntry(const CFX_ByteString& csEntry) const {
     18   return m_pDict && m_pDict->KeyExist(csEntry);
     19 }
     20 
     21 int CPDF_ApSettings::GetRotation() const {
     22   return m_pDict ? m_pDict->GetIntegerFor("R") : 0;
     23 }
     24 
     25 FX_ARGB CPDF_ApSettings::GetColor(int& iColorType,
     26                                   const CFX_ByteString& csEntry) const {
     27   iColorType = COLORTYPE_TRANSPARENT;
     28   if (!m_pDict)
     29     return 0;
     30 
     31   CPDF_Array* pEntry = m_pDict->GetArrayFor(csEntry);
     32   if (!pEntry)
     33     return 0;
     34 
     35   FX_ARGB color = 0;
     36   size_t dwCount = pEntry->GetCount();
     37   if (dwCount == 1) {
     38     iColorType = COLORTYPE_GRAY;
     39     FX_FLOAT g = pEntry->GetNumberAt(0) * 255;
     40     return ArgbEncode(255, (int)g, (int)g, (int)g);
     41   }
     42   if (dwCount == 3) {
     43     iColorType = COLORTYPE_RGB;
     44     FX_FLOAT r = pEntry->GetNumberAt(0) * 255;
     45     FX_FLOAT g = pEntry->GetNumberAt(1) * 255;
     46     FX_FLOAT b = pEntry->GetNumberAt(2) * 255;
     47     return ArgbEncode(255, (int)r, (int)g, (int)b);
     48   }
     49   if (dwCount == 4) {
     50     iColorType = COLORTYPE_CMYK;
     51     FX_FLOAT c = pEntry->GetNumberAt(0);
     52     FX_FLOAT m = pEntry->GetNumberAt(1);
     53     FX_FLOAT y = pEntry->GetNumberAt(2);
     54     FX_FLOAT k = pEntry->GetNumberAt(3);
     55     FX_FLOAT r = 1.0f - std::min(1.0f, c + k);
     56     FX_FLOAT g = 1.0f - std::min(1.0f, m + k);
     57     FX_FLOAT b = 1.0f - std::min(1.0f, y + k);
     58     return ArgbEncode(255, (int)(r * 255), (int)(g * 255), (int)(b * 255));
     59   }
     60   return color;
     61 }
     62 
     63 FX_FLOAT CPDF_ApSettings::GetOriginalColor(
     64     int index,
     65     const CFX_ByteString& csEntry) const {
     66   if (!m_pDict)
     67     return 0;
     68 
     69   CPDF_Array* pEntry = m_pDict->GetArrayFor(csEntry);
     70   return pEntry ? pEntry->GetNumberAt(index) : 0;
     71 }
     72 
     73 void CPDF_ApSettings::GetOriginalColor(int& iColorType,
     74                                        FX_FLOAT fc[4],
     75                                        const CFX_ByteString& csEntry) const {
     76   iColorType = COLORTYPE_TRANSPARENT;
     77   for (int i = 0; i < 4; i++)
     78     fc[i] = 0;
     79 
     80   if (!m_pDict)
     81     return;
     82 
     83   CPDF_Array* pEntry = m_pDict->GetArrayFor(csEntry);
     84   if (!pEntry)
     85     return;
     86 
     87   size_t dwCount = pEntry->GetCount();
     88   if (dwCount == 1) {
     89     iColorType = COLORTYPE_GRAY;
     90     fc[0] = pEntry->GetNumberAt(0);
     91   } else if (dwCount == 3) {
     92     iColorType = COLORTYPE_RGB;
     93     fc[0] = pEntry->GetNumberAt(0);
     94     fc[1] = pEntry->GetNumberAt(1);
     95     fc[2] = pEntry->GetNumberAt(2);
     96   } else if (dwCount == 4) {
     97     iColorType = COLORTYPE_CMYK;
     98     fc[0] = pEntry->GetNumberAt(0);
     99     fc[1] = pEntry->GetNumberAt(1);
    100     fc[2] = pEntry->GetNumberAt(2);
    101     fc[3] = pEntry->GetNumberAt(3);
    102   }
    103 }
    104 
    105 CFX_WideString CPDF_ApSettings::GetCaption(
    106     const CFX_ByteString& csEntry) const {
    107   return m_pDict ? m_pDict->GetUnicodeTextFor(csEntry) : CFX_WideString();
    108 }
    109 
    110 CPDF_Stream* CPDF_ApSettings::GetIcon(const CFX_ByteString& csEntry) const {
    111   return m_pDict ? m_pDict->GetStreamFor(csEntry) : nullptr;
    112 }
    113 
    114 CPDF_IconFit CPDF_ApSettings::GetIconFit() const {
    115   return CPDF_IconFit(m_pDict ? m_pDict->GetDictFor("IF") : nullptr);
    116 }
    117 
    118 int CPDF_ApSettings::GetTextPosition() const {
    119   return m_pDict ? m_pDict->GetIntegerFor("TP", TEXTPOS_CAPTION)
    120                  : TEXTPOS_CAPTION;
    121 }
    122