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GIFTranslator: Read the left and top image coordinates

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This commit is contained in:
John Scipione 2014-03-03 19:29:31 -05:00
parent 5a7193d558
commit 4389d32381
1 changed files with 3 additions and 1 deletions
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4
src/add-ons/translators/gif/GIFLoad.cpp
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@ -263,6 +263,8 @@ GIFLoad::ReadGIFImageHeader()
if (fInput->Read(data, 9) < 9) if (fInput->Read(data, 9) < 9)
return false; return false;
int left = data[0] + (data[1] << 8);
int top = data[2] + (data[3] << 8);
int localWidth = data[4] + (data[5] << 8); int localWidth = data[4] + (data[5] << 8);
int localHeight = data[6] + (data[7] << 8); int localHeight = data[6] + (data[7] << 8);
if (fWidth != localWidth || fHeight != localHeight) { if (fWidth != localWidth || fHeight != localHeight) {
@ -284,7 +286,7 @@ GIFLoad::ReadGIFImageHeader()
return false; return false;
} }
BRect rect(0, 0, fWidth - 1, fHeight - 1); BRect rect(left, top, left + fWidth - 1, top + fHeight - 1);
TranslatorBitmap header; TranslatorBitmap header;
header.magic = B_HOST_TO_BENDIAN_INT32(B_TRANSLATOR_BITMAP); header.magic = B_HOST_TO_BENDIAN_INT32(B_TRANSLATOR_BITMAP);
header.bounds.left = B_HOST_TO_BENDIAN_FLOAT(rect.left); header.bounds.left = B_HOST_TO_BENDIAN_FLOAT(rect.left);