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