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      1 // Copyright 2014 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 <algorithm>
      8 
      9 #include "../../include/formfiller/FormFiller.h"
     10 #include "../../include/formfiller/FFL_Utils.h"
     11 
     12 CPDF_Rect CFFL_Utils::MaxRect(const CPDF_Rect & rect1,const CPDF_Rect & rect2)
     13 {
     14 	CPDF_Rect rcRet;
     15 
     16 	rcRet.left = std::min(rect1.left, rect2.left);
     17 	rcRet.bottom = std::min(rect1.bottom, rect2.bottom);
     18 	rcRet.right = std::max(rect1.right, rect2.right);
     19 	rcRet.top = std::max(rect1.top, rect2.top);
     20 
     21 	return rcRet;
     22 }
     23 
     24 CPDF_Rect CFFL_Utils::InflateRect(const CPDF_Rect & crRect,const FX_FLOAT & fSize)
     25 {
     26 	CPDF_Rect crNew(crRect.left - fSize,
     27 					crRect.bottom - fSize,
     28 					crRect.right + fSize,
     29 					crRect.top + fSize);
     30 	crNew.Normalize();
     31 	return crNew;
     32 }
     33 
     34 CPDF_Rect CFFL_Utils::DeflateRect(const CPDF_Rect & crRect,const FX_FLOAT & fSize)
     35 {
     36 	CPDF_Rect crNew(crRect.left + fSize,
     37 					crRect.bottom + fSize,
     38 					crRect.right - fSize,
     39 					crRect.top - fSize);
     40 	crNew.Normalize();
     41 	return crNew;
     42 }
     43 
     44 FX_BOOL CFFL_Utils::TraceObject(CPDF_Object* pObj)
     45 {
     46 	if (!pObj) return FALSE;
     47 
     48 	FX_DWORD	dwObjNum = pObj->GetObjNum();
     49 	switch (pObj->GetType())
     50 	{
     51 	case PDFOBJ_ARRAY:
     52 		{
     53 			CPDF_Array* pArray = (CPDF_Array*)pObj;
     54 			for (FX_DWORD i = 0; i < pArray->GetCount(); i ++)
     55 			{
     56 				CPDF_Object* pElement = pArray->GetElementValue(i);
     57 				TraceObject(pElement);
     58 			}
     59 		}
     60 		break;
     61 
     62 	case PDFOBJ_DICTIONARY:
     63 		{
     64 			CPDF_Dictionary* pDict = (CPDF_Dictionary*)pObj;
     65 
     66 			FX_POSITION fPos = pDict->GetStartPos();
     67 			CFX_ByteString csKey;
     68 			do
     69 			{
     70 				CPDF_Object* pElement = pDict->GetNextElement(fPos, csKey);
     71  				//TRACE(csKey + "\n");
     72 				if (!pElement) break;
     73 				TraceObject(pElement);
     74 			}while (TRUE);
     75 		}
     76 		break;
     77 
     78 	case PDFOBJ_STREAM:
     79 		{
     80 			CPDF_Stream* pStream = (CPDF_Stream*)pObj;
     81 			CPDF_Dictionary* pDict = pStream->GetDict();
     82 			TraceObject(pDict);
     83 		}
     84 		break;
     85 
     86 	case PDFOBJ_REFERENCE:
     87 		{
     88 			CPDF_Object* pDirectObj = pObj->GetDirect();
     89 			TraceObject(pDirectObj);
     90 		}
     91 		break;
     92 
     93 	case PDFOBJ_BOOLEAN:
     94 		break;
     95 	case PDFOBJ_NUMBER:
     96 		//TRACE("%d\n",(FX_INT32)pObj);
     97 		break;
     98 	case PDFOBJ_STRING:
     99 		//TRACE(((CPDF_String*)pObj)->GetString() + "\n");
    100 		break;
    101 	case PDFOBJ_NAME:
    102 		//TRACE(((CPDF_Name*)pObj)->GetString() + "\n");
    103 		break;
    104 	case PDFOBJ_NULL:
    105 //	case PDFOBJ_KEYWORD:
    106 //	case PDFOBJ_EOF:
    107 	default:
    108 		break;
    109 	}
    110 	if (dwObjNum == 0) return FALSE;
    111 
    112 	return TRUE;
    113 }
    114 
    115