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Implemted wxImage::Paste() for transparent images.

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_2_BRANCH@8213 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Robert Roebling
2000-08-29 18:18:51 +00:00
parent ed64fd2518
commit 49849fadb8
1 changed files with 28 additions and 1 deletions
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29
src/common/image.cpp
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@@ -406,9 +406,36 @@ void wxImage::Paste( const wxImage &image, int x, int y )
source_data += source_step;
target_data += target_step;
}
return;
}
else
if (!HasMask() && image.HasMask())
{
unsigned char r = image.GetMaskRed();
unsigned char g = image.GetMaskGreen();
unsigned char b = image.GetMaskBlue();
width *= 3;
unsigned char* source_data = image.GetData() + xx*3 + yy*3*image.GetWidth();
int source_step = image.GetWidth()*3;
unsigned char* target_data = GetData() + (x+xx)*3 + (y+yy)*3*M_IMGDATA->m_width;
int target_step = M_IMGDATA->m_width*3;
for (int j = 0; j < height; j++)
{
for (int i = 0; i < width; i+=3)
{
if ((source_data[i] != r) &&
(source_data[i+1] != g) &&
(source_data[i+2] != b))
{
memcpy( target_data+i, source_data+i, 3 );
}
}
source_data += source_step;
target_data += target_step;
}
}
}