Merge branch 'master' of git://github.com/thepowersgang/acess2

[tpg/acess2.git] / Usermode / Applications / axwin4_src / Server / CSurface.cpp

diff --git a/Usermode/Applications/axwin4_src/Server/CSurface.cpp b/Usermode/Applications/axwin4_src/Server/CSurface.cpp
index 91bbb9a..d0eddc4 100644 (file)
--- a/Usermode/Applications/axwin4_src/Server/CSurface.cpp
+++ b/Usermode/Applications/axwin4_src/Server/CSurface.cpp
@@ -11,6 +11,7 @@
 #include <cstring>
 #include <system_error>
 #include <cerrno>
+#include <CColour.hpp>
 
 namespace AxWin {
 
@@ -92,6 +93,40 @@ void CSurface::DrawScanline(unsigned int row, unsigned int x_ofs, unsigned int w
        ::memcpy( &m_data[ofs], data, w*4 );
 }
 
+void CSurface::BlendScanline(unsigned int row, unsigned int x_ofs, unsigned int w, const void* data)
+{
+       if( row >= m_rect.m_h )
+               throw ::std::out_of_range("CSurface::DrawScanline row");
+       if( x_ofs >= m_rect.m_w )
+               throw ::std::out_of_range("CSurface::DrawScanline x_ofs");
+
+       if( w > m_rect.m_w )
+               throw ::std::out_of_range("CSurface::DrawScanline width");
+       
+       const uint32_t* in_data = (const uint32_t*)data;
+       size_t  ofs = row*m_rect.m_w + x_ofs;
+       for( unsigned int x = 0; x < w; x ++ )
+       {
+               CColour out = CColour::from_argb(m_data[ofs+x]).blend( CColour::from_argb(in_data[x]) );
+               m_data[ofs+x] = out.to_argb();
+       }
+}
+
+void CSurface::FillScanline(unsigned int row, unsigned int x_ofs, unsigned int w, uint32_t colour)
+{
+       if( row >= m_rect.m_h )
+               throw ::std::out_of_range("CSurface::FillScanline row");
+       if( x_ofs >= m_rect.m_w )
+               throw ::std::out_of_range("CSurface::FillScanline x_ofs");
+
+       if( w > m_rect.m_w )
+               throw ::std::out_of_range("CSurface::FillScanline width");
+       
+       size_t  ofs = row*m_rect.m_w + x_ofs;
+       while( w -- )
+               m_data[ofs++] = colour;
+}
+
 const uint32_t* CSurface::GetScanline(unsigned int row, unsigned int x_ofs) const
 {
        if( row >= m_rect.m_h )