--- /dev/null
+/*
+ * Acess2 GUI v4
+ * - By John Hodge (thePowersGang)
+ *
+ * compositor.cpp
+ * - Window compositor
+ */
+#include <video.hpp>
+#include <CCompositor.hpp>
+#include <CClient.hpp>
+#include <ipc.hpp>
+#include <cassert>
+
+namespace AxWin {
+
+CCompositor::CCompositor(CVideo& video):
+ // TODO: Support multiple screens
+ m_video(video),
+ m_focussed_window(nullptr),
+ m_windowIDBuffer(video.width(), video.height())
+{
+ //
+}
+
+void CCompositor::ShowWindow(CWindow* window)
+{
+ DamageArea(window->m_surface.m_rect);
+ // TODO: Append to separate sub-lists (or to separate lists all together)
+ // if flags AXWIN4_WNDFLAG_KEEPBELOW or AXWIN4_WNDFLAG_KEEPABOVE are set
+ m_windows.push_back(window);
+}
+void CCompositor::HideWindow(CWindow* window)
+{
+ DamageArea(window->m_surface.m_rect);
+ m_windows.remove(window);
+}
+
+bool CCompositor::GetScreenDims(unsigned int ScreenID, unsigned int* W, unsigned int* H)
+{
+ assert(W && H);
+ if( ScreenID != 0 )
+ {
+ *W = 0;
+ *H = 0;
+ return false;
+ }
+ else
+ {
+ m_video.GetDims(*W, *H);
+ return true;
+ }
+}
+
+void CCompositor::Redraw()
+{
+ // Redraw the screen and clear damage rects
+ if( m_damageRects.empty() ) {
+ //_SysDebug("- No damaged regions");
+ return ;
+ }
+
+ // Build up foreground grid (Rects and windows)
+ // - This should already be built (mutated on window move/resize/reorder)
+
+ // For all windows, check for intersection with damage rects
+ for( auto rect : m_damageRects )
+ {
+ // window list should be sorted by draw order (lowest first)
+ for( auto window : m_windows )
+ {
+ if( window->m_is_shown && rect.HasIntersection( window->m_surface.m_rect ) )
+ {
+ // TODO: just reblit
+ CRect rel_rect = window->m_surface.m_rect.RelativeIntersection(rect);
+ _SysDebug("Reblit (%i,%i) %ix%i", rel_rect.m_x, rel_rect.m_y, rel_rect.m_w, rel_rect.m_h);
+ BlitFromSurface( window->m_surface, rel_rect );
+ //window->Repaint( rel_rect );
+ m_windowIDBuffer.set(rel_rect.m_x, rel_rect.m_y, rel_rect.m_w, rel_rect.m_h, window);
+ }
+ }
+
+ // TODO: Blit from windows to a local surface, then blit from there to screen here
+ }
+
+ m_damageRects.clear();
+ m_video.Flush();
+}
+
+void CCompositor::DamageArea(const CRect& area)
+{
+ m_damageRects.push_back( area );
+ // 1. Locate intersection with any existing damaged areas
+ // 2. Append after removing intersections
+}
+
+void CCompositor::BlitFromSurface(const CSurface& dest, const CRect& src_rect)
+{
+ for( unsigned int i = 0; i < src_rect.m_h; i ++ )
+ {
+ m_video.BlitLine(
+ dest.GetScanline(src_rect.m_y+i, src_rect.m_x),
+ dest.m_rect.m_y + src_rect.m_y + i,
+ dest.m_rect.m_x + src_rect.m_x,
+ src_rect.m_w
+ );
+ }
+}
+
+void CCompositor::MouseMove(unsigned int Cursor, unsigned int X, unsigned int Y, int dX, int dY)
+{
+ //_SysDebug("MouseButton(%i, %i,%i, %+i,%+i)", Cursor, X, Y, dX, dY);
+ m_video.SetCursorPos(X+dX, Y+dY);
+ CWindow *dstwin = getWindowForCoord(X, Y);
+ if( dstwin )
+ {
+ // Pass event on to window
+ dstwin->MouseMove(X, Y);
+ }
+}
+
+void CCompositor::MouseButton(unsigned int Cursor, unsigned int X, unsigned int Y, eMouseButton Button, bool Press)
+{
+ _SysDebug("MouseButton(%i, %i,%i, %i=%i)", Cursor, X, Y, Button, Press);
+ CWindow *dstwin = getWindowForCoord(X, Y);
+ _SysDebug("- dstwin = %p", dstwin);
+ if( dstwin )
+ {
+ // 1. Give focus and bring to front
+ // 2. Send event
+ dstwin->MouseButton(Button, X, Y, Press);
+ }
+}
+
+void CCompositor::KeyState(unsigned int KeyboardID, uint32_t KeySym, bool Press, uint32_t Codepoint)
+{
+ _SysDebug("KeyState(%i, 0x%x, %b, 0x%x)", KeyboardID, KeySym, Press, Codepoint);
+ // TODO: Global hotkeys
+ if( m_focussed_window )
+ {
+ m_focussed_window->KeyEvent(KeySym, "", Press);
+ }
+}
+
+CWindow* CCompositor::getWindowForCoord(unsigned int X, unsigned int Y)
+{
+ return m_windowIDBuffer.get(X, Y);
+}
+
+// --------------------------------------------------------------------
+CWindowIDBuffer::CWindowIDBuffer(unsigned int W, unsigned int H):
+ m_w(W),
+ m_buf(W*H)
+{
+}
+void CWindowIDBuffer::set(unsigned int X, unsigned int Y, unsigned int W, unsigned int H, CWindow* win)
+{
+ TWindowID ent = {
+ .Client = win->client().id(),
+ .Window = win->id(),
+ };
+ for( unsigned int row = 0; row < H; row ++ )
+ {
+ TWindowID* dst = &m_buf[ (Y+row) * m_w ];
+ for( unsigned int col = 0; col < W; col ++ )
+ dst[col] = ent;
+ }
+}
+CWindow* CWindowIDBuffer::get(unsigned int X, unsigned int Y)
+{
+ if( X >= m_w )
+ return nullptr;
+ unsigned int pos = Y*m_w + X;
+ if( pos >= m_buf.size() )
+ return nullptr;
+ auto id = m_buf[pos];
+ //_SysDebug("CWindowIDBuffer::get id = {%i,%i}", id.Client, id.Window);
+ auto client = ::AxWin::IPC::GetClientByID(id.Client);
+ if( client == nullptr ) {
+ //_SysDebug("CWindowIDBuffer::get client=%p", client);
+ return nullptr;
+ }
+ return client->GetWindow(id.Window);
+}
+
+} // namespace AxWin
+
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