Usermode/Applications/axwin3_src/WM/wm.c

   1 /*
   2  * Acess2 Window Manager v3
   3  * - By John Hodge (thePowersGang)
   4  *
   5  * wm.c
   6  * - Window manager core
   7  */
   8 #include <common.h>
   9 #include <wm_renderer.h>
  10 #include <stdlib.h>
  11 #include <string.h>
  12 #include <video.h>
  13 #include <wm_messages.h>
  14 #include <decorator.h>
  15
  16 // === IMPORTS ===
  17 extern void     IPC_SendWMMessage(tIPC_Client *Client, uint32_t Src, uint32_t Dst, int Msg, int Len, const void *Data);
  18 extern void     IPC_SendReply(tIPC_Client *Client, uint32_t WinID, int MsgID, size_t Len, const void *Data);
  19 extern tWindow  *IPC_int_GetWindow(tIPC_Client *Client, uint32_t ID);
  20
  21 // === GLOBALS ===
  22 tWMRenderer     *gpWM_Renderers;
  23 tWindow *gpWM_RootWindow;
  24 //! Window which will recieve the next keyboard event
  25 tWindow *gpWM_FocusedWindow;
  26 //! Hilighted window (owner of the currently focused window)
  27 tWindow *gpWM_HilightedWindow;
  28
  29 // === CODE ===
  30 void WM_Initialise(void)
  31 {
  32         WM_CreateWindow(NULL, NULL, 0, 0x0088FF, "Background");
  33         gpWM_RootWindow->W = giScreenWidth;
  34         gpWM_RootWindow->H = giScreenHeight;
  35         gpWM_RootWindow->Flags = WINFLAG_SHOW|WINFLAG_NODECORATE;
  36 }
  37
  38 void WM_RegisterRenderer(tWMRenderer *Renderer)
  39 {
  40         // TODO: Catch out duplicates
  41         Renderer->Next = gpWM_Renderers;
  42         gpWM_Renderers = Renderer;
  43 }
  44
  45 // --- Manipulation
  46 tWindow *WM_CreateWindow(tWindow *Parent, tIPC_Client *Client, uint32_t ID, int RendererArg, const char *RendererName)
  47 {
  48         tWMRenderer     *renderer;
  49         tWindow *ret;
  50
  51         // - Get Renderer
  52         for( renderer = gpWM_Renderers; renderer; renderer = renderer->Next )
  53         {
  54                 if(strcmp(RendererName, renderer->Name) == 0)
  55                         break;
  56         }
  57         if(renderer == NULL)
  58                 return NULL;
  59
  60         // - Call create window function
  61         ret = renderer->CreateWindow(RendererArg);
  62         ret->Client = Client;
  63         ret->ID = ID;
  64         ret->Parent = Parent;
  65         if(!ret->Parent)
  66                 ret->Parent = gpWM_RootWindow;
  67         ret->Owner = Parent;
  68         ret->Renderer = renderer;
  69         ret->Flags |= WINFLAG_CLEAN;    // Needed to stop invaildate early exiting
  70
  71         // Append to parent
  72         if(ret->Parent)
  73         {
  74                 if(ret->Parent->LastChild)
  75                         ret->Parent->LastChild->NextSibling = ret;
  76                 else
  77                         ret->Parent->FirstChild = ret;
  78                 ret->PrevSibling = ret->Parent->LastChild;
  79                 ret->Parent->LastChild = ret;
  80                 ret->NextSibling = NULL;
  81         }
  82         else
  83         {
  84                 gpWM_RootWindow = ret;
  85         }
  86
  87         // Don't decorate child windows by default
  88         if(Parent)
  89         {
  90                 ret->Flags |= WINFLAG_NODECORATE;
  91         }
  92
  93         // - Return!
  94         return ret;
  95 }
  96
  97 tWindow *WM_GetWindowByID(tWindow *Requester, uint32_t ID)
  98 {
  99         return IPC_int_GetWindow(Requester->Client, ID);
 100 }
 101
 102 tWindow *WM_CreateWindowStruct(size_t ExtraSize)
 103 {
 104         tWindow *ret;
 105
 106         ret = calloc( sizeof(tWindow) + ExtraSize, 1 );
 107         ret->RendererInfo = ret + 1;    // Get end of tWindow
 108
 109         return ret;
 110 }
 111
 112 void WM_SetWindowTitle(tWindow *Window, const char *Title)
 113 {
 114         if(Window->Title)
 115                 free(Window->Title);
 116         Window->Title = strdup(Title);
 117         _SysDebug("Window %p title set to '%s'", Window, Title);
 118 }
 119
 120 void WM_RaiseWindow(tWindow *Window)
 121 {
 122         tWindow *parent = Window->Parent;
 123         if(!Window->Parent)     return ;
 124
 125         // Remove from list
 126         if(Window->PrevSibling)
 127                 Window->PrevSibling->NextSibling = Window->NextSibling;
 128         if(Window->NextSibling)
 129                 Window->NextSibling->PrevSibling = Window->PrevSibling;
 130         if(parent->FirstChild == Window)
 131                 parent->FirstChild = Window->NextSibling;
 132         if(parent->LastChild == Window)
 133                 parent->LastChild = Window->PrevSibling;
 134
 135         // Append to end
 136         if(parent->LastChild)
 137                 parent->LastChild->NextSibling = Window;
 138         else
 139                 parent->FirstChild = Window;
 140         Window->PrevSibling = parent->LastChild;
 141         Window->NextSibling = NULL;
 142         parent->LastChild = Window;
 143 }
 144
 145 void WM_FocusWindow(tWindow *Destination)
 146 {
 147         struct sWndMsg_Bool     _msg;
 148
 149         if( gpWM_FocusedWindow == Destination )
 150                 return ;
 151         if( Destination && !(Destination->Flags & WINFLAG_SHOW) )
 152                 return ;
 153
 154         _msg.Val = 0;
 155         WM_SendMessage(NULL, gpWM_FocusedWindow, WNDMSG_FOCUS, sizeof(_msg), &_msg);
 156         _msg.Val = 1;
 157         WM_SendMessage(NULL, Destination, WNDMSG_FOCUS, sizeof(_msg), &_msg);
 158
 159         WM_Invalidate(gpWM_FocusedWindow);
 160         WM_Invalidate(Destination);
 161         gpWM_FocusedWindow = Destination;
 162
 163
 164         // Get the owner of the focused window
 165 //      while(Destination && Destination->Owner)        Destination = Destination->Owner;
 166 //      gpWM_HilightedWindow = Destination;
 167 }
 168
 169
 170 void WM_ShowWindow(tWindow *Window, int bShow)
 171 {
 172         struct sWndMsg_Bool     _msg;
 173
 174         if( !!(Window->Flags & WINFLAG_SHOW) == bShow )
 175                 return ;
 176
 177         // Message window
 178         _msg.Val = !!bShow;
 179         WM_SendMessage(NULL, Window, WNDMSG_SHOW, sizeof(_msg), &_msg);
 180
 181         // Update the flag
 182         if(bShow)
 183                 Window->Flags |= WINFLAG_SHOW;
 184         else
 185         {
 186                 Window->Flags &= ~WINFLAG_SHOW;
 187
 188                 if( Window == gpWM_FocusedWindow )
 189                         WM_FocusWindow(Window->Parent);
 190
 191                 // Just a little memory saving for large hidden windows
 192                 if(Window->RenderBuffer) {
 193                         free(Window->RenderBuffer);
 194                         Window->RenderBuffer = NULL;
 195                 }
 196         }
 197
 198         WM_Invalidate(Window);
 199 }
 200
 201 void WM_DecorateWindow(tWindow *Window, int bDecorate)
 202 {
 203         if( !(Window->Flags & WINFLAG_NODECORATE) == !!bDecorate )
 204                 return ;
 205
 206         if(bDecorate)
 207                 Window->Flags &= ~WINFLAG_NODECORATE;
 208         else
 209                 Window->Flags |= WINFLAG_NODECORATE;
 210
 211         // Needed because the window size changes
 212         if(Window->RenderBuffer) {
 213                 free(Window->RenderBuffer);
 214                 Window->RenderBuffer = NULL;
 215         }
 216
 217         WM_Invalidate(Window);
 218 }
 219
 220 void WM_SetRelative(tWindow *Window, int bRelativeToParent)
 221 {
 222 //      _SysDebug("WM_SetRelative: (%p{Parent=%p},%i)", Window, Window->Parent, bRelativeToParent);
 223         // No meaning if no parent
 224         if( !Window->Parent )
 225                 return ;
 226
 227         // Check that the flag is changing
 228         if( !!bRelativeToParent == !!(Window->Flags & WINFLAG_RELATIVE) )
 229                 return ;
 230
 231         if( bRelativeToParent ) {
 232                 // Set
 233                 Window->Flags |= WINFLAG_RELATIVE;
 234                 WM_MoveWindow(Window, Window->X, Window->Y);
 235         }
 236         else {
 237                 // Clear
 238                 Window->Flags &= ~WINFLAG_RELATIVE;
 239                 WM_MoveWindow(Window, Window->X - Window->Parent->X, Window->Y - Window->Parent->Y);
 240         }
 241 }
 242
 243 int WM_MoveWindow(tWindow *Window, int X, int Y)
 244 {
 245 //      _SysDebug("Move %p to (%i,%i)", Window, X, Y);
 246         // Clip coordinates
 247         if(X + Window->W < 0)   X = -Window->W + 1;
 248         if(Y + Window->H < 0)   Y = -Window->H + 1;
 249         if(X >= giScreenWidth)  X = giScreenWidth - 1;
 250         if(Y >= giScreenHeight) Y = giScreenHeight - 1;
 251
 252         // If relative to the parent, extra checks
 253         if( (Window->Flags & WINFLAG_RELATIVE) && Window->Parent )
 254         {
 255                 if( X > Window->Parent->W )     return 1;
 256                 if( Y > Window->Parent->H )     return 1;
 257         }
 258         // TODO: Re-sanitise
 259
 260         Window->X = X;  Window->Y = Y;
 261
 262         // TODO: Why invalidate buffer?
 263         WM_Invalidate(Window);
 264
 265         return 0;
 266 }
 267
 268 int WM_ResizeWindow(tWindow *Window, int W, int H)
 269 {
 270         if(W <= 0 || H <= 0 )   return 1;
 271         if(Window->X + W < 0)   Window->X = -W + 1;
 272         if(Window->Y + H < 0)   Window->Y = -H + 1;
 273
 274         if( Window->W == W && Window->H == H )
 275                 return 0;
 276
 277         Window->W = W;  Window->H = H;
 278
 279         if(Window->RenderBuffer) {
 280                 free(Window->RenderBuffer);
 281                 Window->RenderBuffer = NULL;
 282         }
 283         WM_Invalidate(Window);
 284
 285         {
 286                 struct sWndMsg_Resize   msg;
 287                 msg.W = W;
 288                 msg.H = H;
 289                 WM_SendMessage(NULL, Window, WNDMSG_RESIZE, sizeof(msg), &msg);
 290         }
 291
 292         return 0;
 293 }
 294
 295 int WM_SendMessage(tWindow *Source, tWindow *Dest, int Message, int Length, const void *Data)
 296 {
 297         if(Dest == NULL)        return -2;
 298         if(Length > 0 && Data == NULL)  return -1;
 299
 300         if( Decorator_HandleMessage(Dest, Message, Length, Data) != 1 )
 301         {
 302                 // TODO: Catch errors from ->HandleMessage
 303                 return 0;
 304         }
 305
 306         // ->HandleMessage returns 1 when the message was not handled
 307         if( Dest->Renderer->HandleMessage(Dest, Message, Length, Data) != 1 )
 308         {
 309                 // TODO: Catch errors from ->HandleMessage
 310                 return 0;
 311         }
 312
 313         // TODO: Implement message masking
 314
 315         if(Dest->Client)
 316         {
 317                 uint32_t        src_id;
 318                 if(!Source)
 319                         src_id = -1;
 320                 else if(Source->Client != Dest->Client) {
 321                         // TODO: Support different client source windows
 322                         _SysDebug("WM_SendMessage: TODO - Support inter-client messages");
 323                         return -1;
 324                 }
 325                 else {
 326                         src_id = Source->ID;
 327                 }
 328
 329                 IPC_SendWMMessage(Dest->Client, src_id, Dest->ID, Message, Length, Data);
 330         }
 331
 332         return 1;
 333 }
 334
 335 int WM_SendIPCReply(tWindow *Window, int Message, size_t Length, const void *Data)
 336 {
 337         IPC_SendReply(Window->Client, Window->ID, Message, Length, Data);
 338         return 0;
 339 }
 340
 341 void WM_Invalidate(tWindow *Window)
 342 {
 343         if(!Window)     return ;
 344 //      _SysDebug("Invalidating %p", Window);
 345         // Don't invalidate twice (speedup)
 346 //      if( !(Window->Flags & WINFLAG_CLEAN) )  return;
 347
 348         // Mark for re-render
 349         Window->Flags &= ~WINFLAG_CLEAN;
 350
 351         // Mark up the tree that a child window has changed
 352         while( (Window = Window->Parent) )
 353                 Window->Flags &= ~WINFLAG_CHILDCLEAN;
 354 }
 355
 356 // --- Rendering / Update
 357 void WM_int_UpdateWindow(tWindow *Window)
 358 {
 359          int    bDecoratorRedraw = 0;
 360
 361         // Ignore hidden windows
 362         if( !(Window->Flags & WINFLAG_SHOW) )
 363                 return ;
 364
 365         // Render
 366         if( !(Window->Flags & WINFLAG_CLEAN) )
 367         {
 368                 // Calculate RealW/RealH
 369                 if( !(Window->Flags & WINFLAG_NODECORATE) )
 370                 {
 371                         //_SysDebug("Applying decorations to %p", Window);
 372                         Decorator_UpdateBorderSize(Window);
 373                         Window->RealW = Window->BorderL + Window->W + Window->BorderR;
 374                         Window->RealH = Window->BorderT + Window->H + Window->BorderB;
 375                         bDecoratorRedraw = 1;
 376                 }
 377                 else
 378                 {
 379                         Window->BorderL = 0;
 380                         Window->BorderR = 0;
 381                         Window->BorderT = 0;
 382                         Window->BorderB = 0;
 383                         Window->RealW = Window->W;
 384                         Window->RealH = Window->H;
 385                 }
 386
 387                 if( (Window->Flags & WINFLAG_RELATIVE) && Window->Parent )
 388                 {
 389                         Window->RealX = Window->Parent->X + Window->Parent->BorderL + Window->X;
 390                         Window->RealY = Window->Parent->Y + Window->Parent->BorderT + Window->Y;
 391                 }
 392                 else
 393                 {
 394                         Window->RealX = Window->X;
 395                         Window->RealY = Window->Y;
 396                 }
 397
 398                 Window->Renderer->Redraw(Window);
 399                 Window->Flags |= WINFLAG_CLEAN;
 400         }
 401
 402         // Process children
 403         if( !(Window->Flags & WINFLAG_CHILDCLEAN) )
 404         {
 405                 tWindow *child;
 406                 for( child = Window->FirstChild; child; child = child->NextSibling )
 407                 {
 408                         WM_int_UpdateWindow(child);
 409                 }
 410                 Window->Flags |= WINFLAG_CHILDCLEAN;
 411         }
 412
 413         if( bDecoratorRedraw )
 414                 Decorator_Redraw(Window);
 415 }
 416
 417 void WM_int_BlitWindow(tWindow *Window)
 418 {
 419         tWindow *child;
 420
 421         // Ignore hidden windows
 422         if( !(Window->Flags & WINFLAG_SHOW) )
 423                 return ;
 424
 425 //      _SysDebug("Blit %p (%p) to (%i,%i) %ix%i", Window, Window->RenderBuffer,
 426 //              Window->RealX, Window->RealY, Window->RealW, Window->RealH);
 427         Video_Blit(Window->RenderBuffer, Window->RealX, Window->RealY, Window->RealW, Window->RealH);
 428
 429         if( Window == gpWM_FocusedWindow && Window->CursorW )
 430         {
 431                 Video_FillRect(
 432                         Window->RealX + Window->BorderL + Window->CursorX,
 433                         Window->RealY + Window->BorderT + Window->CursorY,
 434                         Window->CursorW, Window->CursorH,
 435                         0x000000
 436                         );
 437         }
 438
 439         for( child = Window->FirstChild; child; child = child->NextSibling )
 440         {
 441                 WM_int_BlitWindow(child);
 442         }
 443 }
 444
 445 void WM_Update(void)
 446 {
 447         // Don't redraw if nothing has changed
 448         if( (gpWM_RootWindow->Flags & WINFLAG_CHILDCLEAN) )
 449                 return ;
 450
 451         // - Iterate through visible windows, updating them as needed
 452         WM_int_UpdateWindow(gpWM_RootWindow);
 453
 454         // - Draw windows from back to front to the render buffer
 455         WM_int_BlitWindow(gpWM_RootWindow);
 456
 457         Video_Update();
 458 }
 459