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 <CCompositor.hpp>
  10 #include <cassert>
  11
  12 namespace AxWin {
  13
  14 CCompositor::CCompositor(CVideo& video):
  15         m_video(video)
  16 {
  17         //
  18 }
  19
  20 CWindow* CCompositor::CreateWindow(CClient& client, const ::std::string& name)
  21 {
  22         return new CWindow(*this, client, name);
  23 }
  24
  25 void CCompositor::ShowWindow(CWindow* window)
  26 {
  27         DamageArea(window->m_surface.m_rect);
  28         // TODO: Append to separate sub-lists (or to separate lists all together)
  29         //   if flags AXWIN4_WNDFLAG_KEEPBELOW or AXWIN4_WNDFLAG_KEEPABOVE are set
  30         m_windows.push_back(window);
  31 }
  32 void CCompositor::HideWindow(CWindow* window)
  33 {
  34         DamageArea(window->m_surface.m_rect);
  35         m_windows.remove(window);
  36 }
  37
  38 bool CCompositor::GetScreenDims(unsigned int ScreenID, unsigned int* W, unsigned int* H)
  39 {
  40         assert(W && H);
  41         if( ScreenID != 0 )
  42         {
  43                 *W = 0;
  44                 *H = 0;
  45                 return false;
  46         }
  47         else
  48         {
  49                 m_video.GetDims(*W, *H);
  50                 return true;
  51         }
  52 }
  53
  54 void CCompositor::Redraw()
  55 {
  56         // Redraw the screen and clear damage rects
  57         if( m_damageRects.empty() ) {
  58                 _SysDebug("- No damaged regions");
  59                 return ;
  60         }
  61
  62         // Build up foreground grid (Rects and windows)
  63         // - This should already be built (mutated on window move/resize/reorder)
  64
  65         // For all windows, check for intersection with damage rects
  66         for( auto rect : m_damageRects )
  67         {
  68                 // window list should be sorted by draw order (lowest first)
  69                 for( auto window : m_windows )
  70                 {
  71                         if( window->m_is_shown && rect.HasIntersection( window->m_surface.m_rect ) )
  72                         {
  73                                 // TODO: just reblit
  74                                 CRect   rel_rect = window->m_surface.m_rect.RelativeIntersection(rect);
  75                                 //_SysDebug("Reblit (%i,%i) %ix%i", rel_rect.m_x, rel_rect.m_y, rel_rect.m_w, rel_rect.m_h);
  76                                 BlitFromSurface( window->m_surface, rel_rect );
  77                                 //window->Repaint( rel_rect );
  78                         }
  79                 }
  80
  81                 // TODO: Blit from windows to a local surface, then blit from there to screen here
  82         }
  83
  84         m_damageRects.clear();
  85         m_video.Flush();
  86 }
  87
  88 void CCompositor::DamageArea(const CRect& area)
  89 {
  90         m_damageRects.push_back( area );
  91         // 1. Locate intersection with any existing damaged areas
  92         // 2. Append after removing intersections
  93 }
  94
  95 void CCompositor::BlitFromSurface(const CSurface& dest, const CRect& src_rect)
  96 {
  97         for( unsigned int i = 0; i < src_rect.m_h; i ++ )
  98         {
  99                 m_video.BlitLine(
 100                         dest.GetScanline(src_rect.m_y, src_rect.m_y),
 101                         dest.m_rect.m_y + src_rect.m_y + i,
 102                         dest.m_rect.m_x + src_rect.m_x,
 103                         src_rect.m_w
 104                         );
 105         }
 106 }
 107
 108 void CCompositor::MouseMove(unsigned int Cursor, unsigned int X, unsigned int Y, int dX, int dY)
 109 {
 110         _SysDebug("MouseButton(%i, %i,%i, %+i,%+i)", Cursor, X, Y, dX, dY);
 111         m_video.SetCursorPos(X+dX, Y+dY);
 112         // TODO: Pass event on to window
 113 }
 114
 115 void CCompositor::MouseButton(unsigned int Cursor, unsigned int X, unsigned int Y, eMouseButton Button, bool Press)
 116 {
 117         _SysDebug("MouseButton(%i, %i,%i, %i=%i)", Cursor, X, Y, Button, Press);
 118         // TODO: Pass event on to window
 119 }
 120
 121 void CCompositor::KeyState(unsigned int KeyboardID, uint32_t KeySym, bool Press, uint32_t Codepoint)
 122 {
 123         _SysDebug("KeyState(%i, 0x%x, %b, 0x%x)", KeyboardID, KeySym, Press, Codepoint);
 124 }
 125
 126 }       // namespace AxWin
 127