+void WM_SetWindowTitle(tWindow *Window, const char *Title)
+{
+ if(Window->Title)
+ free(Window->Title);
+ Window->Title = strdup(Title);
+ _SysDebug("Window %p title set to '%s'", Window, Title);
+}
+
+void WM_RaiseWindow(tWindow *Window)
+{
+ tWindow *parent = Window->Parent;
+ if(!Window->Parent) return ;
+
+ // Remove from list
+ if(Window->PrevSibling)
+ Window->PrevSibling->NextSibling = Window->NextSibling;
+ if(Window->NextSibling)
+ Window->NextSibling->PrevSibling = Window->PrevSibling;
+ if(parent->FirstChild == Window)
+ parent->FirstChild = Window->NextSibling;
+ if(parent->LastChild == Window)
+ parent->LastChild = Window->PrevSibling;
+
+ // Append to end
+ if(parent->LastChild)
+ parent->LastChild->NextSibling = Window;
+ else
+ parent->FirstChild = Window;
+ Window->PrevSibling = parent->LastChild;
+ Window->NextSibling = NULL;
+ parent->LastChild = Window;
+}
+
+void WM_FocusWindow(tWindow *Destination)
+{
+ struct sWndMsg_Bool _msg;
+
+ if( gpWM_FocusedWindow == Destination )
+ return ;
+ if( Destination && !(Destination->Flags & WINFLAG_SHOW) )
+ return ;
+
+ _msg.Val = 0;
+ WM_SendMessage(NULL, gpWM_FocusedWindow, WNDMSG_FOCUS, sizeof(_msg), &_msg);
+ _msg.Val = 1;
+ WM_SendMessage(NULL, Destination, WNDMSG_FOCUS, sizeof(_msg), &_msg);
+
+ WM_Invalidate(gpWM_FocusedWindow);
+ WM_Invalidate(Destination);
+ gpWM_FocusedWindow = Destination;
+
+
+ // Get the owner of the focused window
+// while(Destination && Destination->Owner) Destination = Destination->Owner;
+// gpWM_HilightedWindow = Destination;
+}
+
+
+void WM_ShowWindow(tWindow *Window, int bShow)
+{
+ struct sWndMsg_Bool _msg;
+
+ if( !!(Window->Flags & WINFLAG_SHOW) == bShow )
+ return ;
+
+ // Message window
+ _msg.Val = !!bShow;
+ WM_SendMessage(NULL, Window, WNDMSG_SHOW, sizeof(_msg), &_msg);
+
+ // Update the flag
+ if(bShow)
+ Window->Flags |= WINFLAG_SHOW;
+ else
+ {
+ Window->Flags &= ~WINFLAG_SHOW;
+
+ if( Window == gpWM_FocusedWindow )
+ WM_FocusWindow(Window->Parent);
+
+ // Just a little memory saving for large hidden windows
+ if(Window->RenderBuffer) {
+ free(Window->RenderBuffer);
+ Window->RenderBuffer = NULL;
+ }
+ }
+
+ WM_Invalidate(Window);
+}
+
+void WM_DecorateWindow(tWindow *Window, int bDecorate)
+{
+ if( !(Window->Flags & WINFLAG_NODECORATE) == !!bDecorate )
+ return ;
+
+ if(bDecorate)
+ Window->Flags &= ~WINFLAG_NODECORATE;
+ else
+ Window->Flags |= WINFLAG_NODECORATE;
+
+ // Needed because the window size changes
+ if(Window->RenderBuffer) {
+ free(Window->RenderBuffer);
+ Window->RenderBuffer = NULL;
+ }
+
+ WM_Invalidate(Window);
+}
+
+int WM_MoveWindow(tWindow *Window, int X, int Y)
+{
+ // Clip coordinates
+ if(X + Window->W < 0) X = -Window->W + 1;
+ if(Y + Window->H < 0) Y = -Window->H + 1;
+ if(X >= giScreenWidth) X = giScreenWidth - 1;
+ if(Y >= giScreenHeight) Y = giScreenHeight - 1;
+
+ Window->X = X; Window->Y = Y;
+
+ WM_Invalidate(Window);
+
+ return 0;
+}
+
+int WM_ResizeWindow(tWindow *Window, int W, int H)
+{
+ if(W <= 0 || H <= 0 ) return 1;
+ if(Window->X + W < 0) Window->X = -W + 1;
+ if(Window->Y + H < 0) Window->Y = -H + 1;
+
+ Window->W = W; Window->H = H;
+
+ if(Window->RenderBuffer) {
+ free(Window->RenderBuffer);
+ Window->RenderBuffer = NULL;
+ }
+ WM_Invalidate(Window);
+
+ {
+ struct sWndMsg_Resize msg;
+ msg.W = W;
+ msg.H = H;
+ WM_SendMessage(NULL, Window, WNDMSG_RESIZE, sizeof(msg), &msg);
+ }
+
+ return 0;
+}
+
+int WM_SendMessage(tWindow *Source, tWindow *Dest, int Message, int Length, const void *Data)
+{
+ if(Dest == NULL) return -2;
+ if(Length > 0 && Data == NULL) return -1;
+
+ if( Decorator_HandleMessage(Dest, Message, Length, Data) != 1 )
+ {
+ // TODO: Catch errors from ->HandleMessage
+ return 0;
+ }
+
+ // ->HandleMessage returns 1 when the message was not handled
+ if( Dest->Renderer->HandleMessage(Dest, Message, Length, Data) != 1 )
+ {
+ // TODO: Catch errors from ->HandleMessage
+ return 0;
+ }
+
+ // TODO: Implement message masking
+
+ if(Dest->Client)
+ {
+ uint32_t src_id;
+ if(!Source)
+ src_id = -1;
+ else if(Source->Client != Dest->Client) {
+ // TODO: Support different client source windows
+ _SysDebug("WM_SendMessage: TODO - Support inter-client messages");
+ return -1;
+ }
+ else {
+ src_id = Source->ID;
+ }
+
+ IPC_SendWMMessage(Dest->Client, src_id, Dest->ID, Message, Length, Data);
+ }
+
+ return 1;
+}
+
+void WM_Invalidate(tWindow *Window)
+{
+ if(!Window) return ;
+ _SysDebug("Invalidating %p", Window);
+ // Don't invalidate twice (speedup)
+// if( !(Window->Flags & WINFLAG_CLEAN) ) return;
+
+ // Mark for re-render
+ Window->Flags &= ~WINFLAG_CLEAN;
+
+ // Mark up the tree that a child window has changed
+ while( (Window = Window->Parent) )
+ Window->Flags &= ~WINFLAG_CHILDCLEAN;
+}
+
+// --- Rendering / Update