| // Copyright 2016 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 "core/fpdfdoc/cpdf_dest.h" |
| |
| #include "core/fpdfapi/parser/cpdf_array.h" |
| #include "core/fpdfapi/parser/cpdf_document.h" |
| #include "core/fpdfapi/parser/cpdf_name.h" |
| #include "core/fpdfapi/parser/cpdf_number.h" |
| |
| namespace { |
| |
| const char* const g_sZoomModes[] = {"XYZ", "Fit", "FitH", "FitV", "FitR", |
| "FitB", "FitBH", "FitBV", nullptr}; |
| |
| } // namespace |
| |
| int CPDF_Dest::GetPageIndex(CPDF_Document* pDoc) { |
| CPDF_Array* pArray = ToArray(m_pObj); |
| if (!pArray) |
| return 0; |
| |
| CPDF_Object* pPage = pArray->GetDirectObjectAt(0); |
| if (!pPage) |
| return 0; |
| if (pPage->IsNumber()) |
| return pPage->GetInteger(); |
| if (!pPage->IsDictionary()) |
| return 0; |
| return pDoc->GetPageIndex(pPage->GetObjNum()); |
| } |
| |
| uint32_t CPDF_Dest::GetPageObjNum() { |
| CPDF_Array* pArray = ToArray(m_pObj); |
| if (!pArray) |
| return 0; |
| |
| CPDF_Object* pPage = pArray->GetDirectObjectAt(0); |
| if (!pPage) |
| return 0; |
| if (pPage->IsNumber()) |
| return pPage->GetInteger(); |
| if (pPage->IsDictionary()) |
| return pPage->GetObjNum(); |
| return 0; |
| } |
| |
| int CPDF_Dest::GetZoomMode() { |
| CPDF_Array* pArray = ToArray(m_pObj); |
| if (!pArray) |
| return 0; |
| |
| CPDF_Object* pObj = pArray->GetDirectObjectAt(1); |
| if (!pObj) |
| return 0; |
| |
| CFX_ByteString mode = pObj->GetString(); |
| for (int i = 0; g_sZoomModes[i]; ++i) { |
| if (mode == g_sZoomModes[i]) |
| return i + 1; |
| } |
| |
| return 0; |
| } |
| |
| bool CPDF_Dest::GetXYZ(bool* pHasX, |
| bool* pHasY, |
| bool* pHasZoom, |
| float* pX, |
| float* pY, |
| float* pZoom) const { |
| *pHasX = false; |
| *pHasY = false; |
| *pHasZoom = false; |
| |
| CPDF_Array* pArray = ToArray(m_pObj); |
| if (!pArray) |
| return false; |
| |
| if (pArray->GetCount() < 5) |
| return false; |
| |
| const CPDF_Name* xyz = ToName(pArray->GetDirectObjectAt(1)); |
| if (!xyz || xyz->GetString() != "XYZ") |
| return false; |
| |
| const CPDF_Number* numX = ToNumber(pArray->GetDirectObjectAt(2)); |
| const CPDF_Number* numY = ToNumber(pArray->GetDirectObjectAt(3)); |
| const CPDF_Number* numZoom = ToNumber(pArray->GetDirectObjectAt(4)); |
| |
| // If the value is a CPDF_Null then ToNumber will return nullptr. |
| *pHasX = !!numX; |
| *pHasY = !!numY; |
| *pHasZoom = !!numZoom; |
| |
| if (numX) |
| *pX = numX->GetNumber(); |
| if (numY) |
| *pY = numY->GetNumber(); |
| |
| // A zoom value of 0 is equivalent to a null value, so treat it as a null. |
| if (numZoom) { |
| float num = numZoom->GetNumber(); |
| if (num == 0.0) |
| *pHasZoom = false; |
| else |
| *pZoom = num; |
| } |
| |
| return true; |
| } |
| |
| float CPDF_Dest::GetParam(int index) { |
| CPDF_Array* pArray = ToArray(m_pObj); |
| return pArray ? pArray->GetNumberAt(2 + index) : 0; |
| } |
| |
| CFX_ByteString CPDF_Dest::GetRemoteName() { |
| return m_pObj ? m_pObj->GetString() : CFX_ByteString(); |
| } |