Usermode/AxWin3 - Implementing more of the widget code
[tpg/acess2.git] / Usermode / Applications / axwin3_src / WM / wm.c
index 3b60d1a..464901e 100644 (file)
  */
 #include <common.h>
 #include <wm_renderer.h>
+#include <stdlib.h>
+#include <string.h>
+#include <video.h>
+#include <wm_messages.h>
+
+// === GLOBALS ===
+tWMRenderer    *gpWM_Renderers;
+tWindow        *gpWM_RootWindow;
 
 // === CODE ===
+void WM_Initialise(void)
+{
+       WM_CreateWindow(NULL, 0x0088FF, "Background");
+       gpWM_RootWindow->W = giScreenWidth;
+       gpWM_RootWindow->H = giScreenHeight;
+       gpWM_RootWindow->Flags = WINFLAG_SHOW;
+}
+
 void WM_RegisterRenderer(tWMRenderer *Renderer)
 {
-       UNIMPLEMENTED();
+       // TODO: Catch out duplicates
+       Renderer->Next = gpWM_Renderers;
+       gpWM_Renderers = Renderer;
 }
 
-tWindow *WM_CreateWindow(tWindow *Parent, int Flags, const char *RendererName)
+// --- Manipulation
+tWindow *WM_CreateWindow(tWindow *Parent, int RendererArg, const char *RendererName)
 {
-       UNIMPLEMENTED();
+       tWMRenderer     *renderer;
+       tWindow *ret;
        
        // - Get Renderer
+       for( renderer = gpWM_Renderers; renderer; renderer = renderer->Next )
+       {
+               if(strcmp(RendererName, renderer->Name) == 0)
+                       break;
+       }
+       if(renderer == NULL)
+               return NULL;
+
+       if(!Parent)
+               Parent = gpWM_RootWindow;
 
        // - Call create window function
-       
-       // - Fill common fields on that
-       
+       ret = renderer->CreateWindow(RendererArg);
+       ret->Parent = Parent;
+       ret->Renderer = renderer;
+       ret->Flags = WINFLAG_CLEAN;     // Note, not acutally clean, but it makes invaidate work
+
+       // Append to parent
+       if(Parent)
+       {
+               if(Parent->LastChild)
+                       Parent->LastChild->NextSibling = ret;
+               else
+                       Parent->FirstChild = ret;
+               ret->PrevSibling = Parent->LastChild;
+               Parent->LastChild = ret;
+       }
+       else
+       {
+               gpWM_RootWindow = ret;
+       }
+
        // - Return!
-       return NULL;
+       return ret;
 }
 
 tWindow *WM_CreateWindowStruct(size_t ExtraSize)
 {
-       return NULL;
+       tWindow *ret;
+       
+       ret = calloc( sizeof(tWindow) + ExtraSize, 1 );
+       ret->RendererInfo = ret + 1;    // Get end of tWindow
+       
+       return ret;
+}
+
+void WM_ShowWindow(tWindow *Window, int bShow)
+{
+       // TODO: Message window
+       if(bShow)
+               Window->Flags |= WINFLAG_SHOW;
+       else
+               Window->Flags &= ~WINFLAG_SHOW;
+       WM_Invalidate(Window);
 }
 
-void WM_Render_FilledRect(tWindow *Window, tColour Colour, int X, int Y, int W, int H)
+int WM_MoveWindow(tWindow *Window, int X, int Y)
 {
-       UNIMPLEMENTED();
+       // 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;
+
+       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, void *Data)
+{
+       if(Dest == NULL)        return -2;
+       if(Length > 0 && Data == NULL)  return -1;
+       
+       // ->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: Pass on to user
+       _SysDebug("WM_SendMessage: TODO - Implement sending to client application");
+       
+       return 1;
+}
+
+void WM_Invalidate(tWindow *Window)
+{
+       // Don't invalidate twice (speedup)
+       if( !(Window->Flags & WINFLAG_CLEAN) )  return;
+
+//     _SysDebug("Invalidating %p");
+       
+       // Mark for re-render
+       Window->Flags &= ~WINFLAG_CLEAN;
+
+       // Mark up the tree that a child window has changed     
+       while( (Window = Window->Parent) )
+       {
+//             _SysDebug("Childclean removed from %p", Window);
+               Window->Flags &= ~WINFLAG_CHILDCLEAN;
+       }
+}
+
+// --- Rendering / Update
+void WM_int_UpdateWindow(tWindow *Window)
+{
+       tWindow *child;
+
+       // Ignore hidden windows
+       if( !(Window->Flags & WINFLAG_SHOW) )
+               return ;
+       
+       // Render
+       if( !(Window->Flags & WINFLAG_CLEAN) )
+       {
+               Window->Renderer->Redraw(Window);
+               Window->Flags |= WINFLAG_CLEAN;
+       }
+       
+       // Process children
+       if( !(Window->Flags & WINFLAG_CHILDCLEAN) )
+       {
+               for( child = Window->FirstChild; child; child = child->NextSibling )
+               {
+                       WM_int_UpdateWindow(child);
+               }
+               Window->Flags |= WINFLAG_CHILDCLEAN;
+       }
+       
+}
+
+void WM_int_BlitWindow(tWindow *Window)
+{
+       tWindow *child;
+
+       // Ignore hidden windows
+       if( !(Window->Flags & WINFLAG_SHOW) )
+               return ;
+       
+       Video_Blit(Window->RenderBuffer, Window->X, Window->Y, Window->W, Window->H);
+       
+       for( child = Window->FirstChild; child; child = child->NextSibling )
+       {
+               WM_int_BlitWindow(child);
+       }
+}
+
+void WM_Update(void)
+{
+       // Don't redraw if nothing has changed
+       if( (gpWM_RootWindow->Flags & WINFLAG_CHILDCLEAN) )
+               return ;        
+
+       // - Iterate through visible windows, updating them as needed
+       WM_int_UpdateWindow(gpWM_RootWindow);
+       
+       // - Draw windows from back to front to the render buffer
+       WM_int_BlitWindow(gpWM_RootWindow);
+
+       Video_Update();
 }
 

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