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wxIMage accessors

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printing bitmaps


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@1120 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Robert Roebling
1998-12-06 21:35:49 +00:00
parent ca5e9f677a
commit ef5390661e
4 changed files with 218 additions and 72 deletions
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58
src/common/image.cpp
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@@ -153,6 +153,64 @@ wxImage wxImage::Scale( int width, int height )
return image;
}
void wxImage::SetRGB( int x, int y, unsigned char r, unsigned char g, unsigned char b )
{
wxCHECK_RET( Ok(), "invalid image" );
int w = M_IMGDATA->m_width;
int h = M_IMGDATA->m_height;
wxCHECK_RET( (x>=0) && (y>=0) && (x<w) && (y<h), "invalid image index" );
long pos = (y * w + x) * 3;
M_IMGDATA->m_data[ pos ] = r;
M_IMGDATA->m_data[ pos+1 ] = g;
M_IMGDATA->m_data[ pos+2 ] = b;
}
unsigned char wxImage::GetRed( int x, int y )
{
wxCHECK_MSG( Ok(), 0, "invalid image" );
int w = M_IMGDATA->m_width;
int h = M_IMGDATA->m_height;
wxCHECK_MSG( (x>=0) && (y>=0) && (x<w) && (y<h), 0, "invalid image index" );
long pos = (y * w + x) * 3;
return M_IMGDATA->m_data[pos];
}
unsigned char wxImage::GetGreen( int x, int y )
{
wxCHECK_MSG( Ok(), 0, "invalid image" );
int w = M_IMGDATA->m_width;
int h = M_IMGDATA->m_height;
wxCHECK_MSG( (x>=0) && (y>=0) && (x<w) && (y<h), 0, "invalid image index" );
long pos = (y * w + x) * 3;
return M_IMGDATA->m_data[pos+1];
}
unsigned char wxImage::GetBlue( int x, int y )
{
wxCHECK_MSG( Ok(), 0, "invalid image" );
int w = M_IMGDATA->m_width;
int h = M_IMGDATA->m_height;
wxCHECK_MSG( (x>=0) && (y>=0) && (x<w) && (y<h), 0, "invalid image index" );
long pos = (y * w + x) * 3;
return M_IMGDATA->m_data[pos+2];
}
bool wxImage::Ok() const
{
return (M_IMGDATA && M_IMGDATA->m_ok);