Usermode/Applications/axwin4_src/Server/compositor.cpp

   1 /*
   2  * Acess2 GUI v4
   3  * - By John Hodge (thePowersGang)
   4  *
   5  * compositor.cpp
   6  * - Window compositor
   7  */
   8 #include <video.hpp>
   9 #include <compositor.hpp>
  10 #include <CCompositor.hpp>
  11
  12 namespace AxWin {
  13
  14 CCompositor::CCompositor(CVideo& video):
  15         m_video(video)
  16 {
  17         //
  18 }
  19
  20 CWindow* CCompositor::CreateWindow(CClient& client)
  21 {
  22         return new CWindow(client, "TODO");
  23 }
  24
  25 void CCompositor::Redraw()
  26 {
  27         // Redraw the screen and clear damage rects
  28         if( m_damageRects.empty() )
  29                 return ;
  30
  31         // Build up foreground grid (Rects and windows)
  32         // - This should already be built (mutated on window move/resize/reorder)
  33
  34         // For all windows, check for intersection with damage rects
  35         for( auto rect : m_damageRects )
  36         {
  37                 // window list should be sorted by draw order (lowest first)
  38                 for( auto window : m_windows )
  39                 {
  40                         if( rect.HasIntersection( window->m_surface.m_rect ) )
  41                         {
  42                                 // TODO: just reblit
  43                                 CRect   rel_rect = window->m_surface.m_rect.RelativeIntersection(rect);
  44                                 BlitFromSurface( window->m_surface, rel_rect );
  45                                 //window->Repaint( rel_rect );
  46                         }
  47                 }
  48
  49                 // TODO: Blit from windows to a local surface, then blit from there to screen here
  50         }
  51
  52         m_damageRects.clear();
  53 }
  54
  55 void CCompositor::DamageArea(const CRect& area)
  56 {
  57         m_damageRects.push_back( area );
  58         // 1. Locate intersection with any existing damaged areas
  59         // 2. Append after removing intersections
  60 }
  61
  62 void CCompositor::BlitFromSurface(const CSurface& dest, const CRect& src_rect)
  63 {
  64         for( unsigned int i = 0; i < src_rect.m_h; i ++ )
  65         {
  66                 m_video.BlitLine(
  67                         dest.GetScanline(src_rect.m_y, src_rect.m_y),
  68                         dest.m_rect.m_y + src_rect.m_y + i,
  69                         dest.m_rect.m_x + src_rect.m_x,
  70                         src_rect.m_w
  71                         );
  72         }
  73 }
  74
  75 }       // namespace AxWin
  76