diff options
Diffstat (limited to 'xfa/fxfa/cxfa_widgetacc.cpp')
| -rw-r--r-- | xfa/fxfa/cxfa_widgetacc.cpp | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/xfa/fxfa/cxfa_widgetacc.cpp b/xfa/fxfa/cxfa_widgetacc.cpp index 407517f564..2ae3381bce 100644 --- a/xfa/fxfa/cxfa_widgetacc.cpp +++ b/xfa/fxfa/cxfa_widgetacc.cpp @@ -11,6 +11,7 @@ #include <vector> #include "core/fxcrt/cfx_decimal.h" +#include "core/fxcrt/cfx_memorystream.h" #include "core/fxcrt/fx_extension.h" #include "core/fxcrt/xml/cfx_xmlelement.h" #include "core/fxcrt/xml/cfx_xmlnode.h" @@ -61,6 +62,152 @@ class CXFA_WidgetLayoutData { namespace { +constexpr uint8_t g_inv_base64[128] = { + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 62, 255, + 255, 255, 63, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 255, 255, + 255, 255, 255, 255, 255, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, + 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, + 25, 255, 255, 255, 255, 255, 255, 26, 27, 28, 29, 30, 31, 32, 33, + 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, + 49, 50, 51, 255, 255, 255, 255, 255, +}; + +uint8_t* XFA_RemoveBase64Whitespace(const uint8_t* pStr, int32_t iLen) { + uint8_t* pCP; + int32_t i = 0, j = 0; + if (iLen == 0) { + iLen = strlen((char*)pStr); + } + pCP = FX_Alloc(uint8_t, iLen + 1); + for (; i < iLen; i++) { + if ((pStr[i] & 128) == 0) { + if (g_inv_base64[pStr[i]] != 0xFF || pStr[i] == '=') { + pCP[j++] = pStr[i]; + } + } + } + pCP[j] = '\0'; + return pCP; +} + +int32_t XFA_Base64Decode(const char* pStr, uint8_t* pOutBuffer) { + if (!pStr) { + return 0; + } + uint8_t* pBuffer = + XFA_RemoveBase64Whitespace((uint8_t*)pStr, strlen((char*)pStr)); + if (!pBuffer) { + return 0; + } + int32_t iLen = strlen((char*)pBuffer); + int32_t i = 0, j = 0; + uint32_t dwLimb = 0; + for (; i + 3 < iLen; i += 4) { + if (pBuffer[i] == '=' || pBuffer[i + 1] == '=' || pBuffer[i + 2] == '=' || + pBuffer[i + 3] == '=') { + if (pBuffer[i] == '=' || pBuffer[i + 1] == '=') { + break; + } + if (pBuffer[i + 2] == '=') { + dwLimb = ((uint32_t)g_inv_base64[pBuffer[i]] << 6) | + ((uint32_t)g_inv_base64[pBuffer[i + 1]]); + pOutBuffer[j] = (uint8_t)(dwLimb >> 4) & 0xFF; + j++; + } else { + dwLimb = ((uint32_t)g_inv_base64[pBuffer[i]] << 12) | + ((uint32_t)g_inv_base64[pBuffer[i + 1]] << 6) | + ((uint32_t)g_inv_base64[pBuffer[i + 2]]); + pOutBuffer[j] = (uint8_t)(dwLimb >> 10) & 0xFF; + pOutBuffer[j + 1] = (uint8_t)(dwLimb >> 2) & 0xFF; + j += 2; + } + } else { + dwLimb = ((uint32_t)g_inv_base64[pBuffer[i]] << 18) | + ((uint32_t)g_inv_base64[pBuffer[i + 1]] << 12) | + ((uint32_t)g_inv_base64[pBuffer[i + 2]] << 6) | + ((uint32_t)g_inv_base64[pBuffer[i + 3]]); + pOutBuffer[j] = (uint8_t)(dwLimb >> 16) & 0xff; + pOutBuffer[j + 1] = (uint8_t)(dwLimb >> 8) & 0xff; + pOutBuffer[j + 2] = (uint8_t)(dwLimb)&0xff; + j += 3; + } + } + FX_Free(pBuffer); + return j; +} + +FXCODEC_IMAGE_TYPE XFA_GetImageType(const WideString& wsType) { + WideString wsContentType(wsType); + wsContentType.MakeLower(); + if (wsContentType == L"image/jpg") + return FXCODEC_IMAGE_JPG; + if (wsContentType == L"image/png") + return FXCODEC_IMAGE_PNG; + if (wsContentType == L"image/gif") + return FXCODEC_IMAGE_GIF; + if (wsContentType == L"image/bmp") + return FXCODEC_IMAGE_BMP; + if (wsContentType == L"image/tif") + return FXCODEC_IMAGE_TIF; + return FXCODEC_IMAGE_UNKNOWN; +} + +RetainPtr<CFX_DIBitmap> XFA_LoadImageData(CXFA_FFDoc* pDoc, + CXFA_Image* pImage, + bool& bNameImage, + int32_t& iImageXDpi, + int32_t& iImageYDpi) { + WideString wsHref = pImage->GetHref(); + WideString wsImage = pImage->GetContent(); + if (wsHref.IsEmpty() && wsImage.IsEmpty()) + return nullptr; + + FXCODEC_IMAGE_TYPE type = XFA_GetImageType(pImage->GetContentType()); + ByteString bsContent; + uint8_t* pImageBuffer = nullptr; + RetainPtr<IFX_SeekableReadStream> pImageFileRead; + if (wsImage.GetLength() > 0) { + XFA_AttributeEnum iEncoding = pImage->GetTransferEncoding(); + if (iEncoding == XFA_AttributeEnum::Base64) { + ByteString bsData = wsImage.UTF8Encode(); + int32_t iLength = bsData.GetLength(); + pImageBuffer = FX_Alloc(uint8_t, iLength); + int32_t iRead = XFA_Base64Decode(bsData.c_str(), pImageBuffer); + if (iRead > 0) { + pImageFileRead = + pdfium::MakeRetain<CFX_MemoryStream>(pImageBuffer, iRead, false); + } + } else { + bsContent = ByteString::FromUnicode(wsImage); + pImageFileRead = pdfium::MakeRetain<CFX_MemoryStream>( + const_cast<uint8_t*>(bsContent.raw_str()), bsContent.GetLength(), + false); + } + } else { + WideString wsURL = wsHref; + if (wsURL.Left(7) != L"http://" && wsURL.Left(6) != L"ftp://") { + RetainPtr<CFX_DIBitmap> pBitmap = + pDoc->GetPDFNamedImage(wsURL.AsStringView(), iImageXDpi, iImageYDpi); + if (pBitmap) { + bNameImage = true; + return pBitmap; + } + } + pImageFileRead = pDoc->GetDocEnvironment()->OpenLinkedFile(pDoc, wsURL); + } + if (!pImageFileRead) { + FX_Free(pImageBuffer); + return nullptr; + } + bNameImage = false; + RetainPtr<CFX_DIBitmap> pBitmap = + XFA_LoadImageFromBuffer(pImageFileRead, type, iImageXDpi, iImageYDpi); + FX_Free(pImageBuffer); + return pBitmap; +} + class CXFA_TextLayoutData : public CXFA_WidgetLayoutData { public: CXFA_TextLayoutData() {} |