contrib/src/fl/gcupdatesmgr.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        gcupdatesmgr.cpp
   3 // Purpose:     cbGCUpdatesMgr class, optimizing refresh using GarbageCollector
   4 // Author:      Aleksandras Gluchovas
   5 // Modified by:
   6 // Created:     19/10/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Aleksandras Gluchovas
   9 // Licence:       wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13     #pragma implementation "gcupdatesmgr.h"
  14 #endif
  15
  16 // For compilers that support precompilation, includes "wx.h".
  17 #include "wx/wxprec.h"
  18
  19 #ifdef __BORLANDC__
  20 #pragma hdrstop
  21 #endif
  22
  23 #ifndef WX_PRECOMP
  24 #include "wx/wx.h"
  25 #endif
  26
  27 #include "wx/fl/gcupdatesmgr.h"
  28
  29 // helper function
  30
  31 static inline bool rect_hits_rect( const wxRect& r1, const wxRect& r2 )
  32 {
  33     if ( ( r2.x >= r1.x && r2.x <= r1.x + r1.width ) ||
  34          ( r1.x >= r2.x && r1.x <= r2.x + r2.width ) )
  35
  36         if ( ( r2.y >= r1.y && r2.y <= r1.y + r1.height ) ||
  37              ( r1.y >= r2.y && r1.y <= r2.y + r2.height ) )
  38
  39             return 1;
  40
  41     return 0;
  42 }
  43
  44 // helper structure
  45
  46 struct cbRectInfo
  47 {
  48     cbBarInfo*  mpBar;
  49     cbDockPane* mpPane;
  50     wxRect*     mpCurBounds;
  51     wxRect*     mpPrevBounds;
  52 };
  53
  54 static inline cbRectInfo& node_to_rect_info( wxNode* pNode )
  55 {
  56     return *( (cbRectInfo*) (pNode->Data()) );
  57 }
  58
  59 /***** Implementation for class cbSimpleUpdatesMgr *****/
  60
  61 IMPLEMENT_DYNAMIC_CLASS( cbGCUpdatesMgr, cbSimpleUpdatesMgr )
  62
  63 cbGCUpdatesMgr::cbGCUpdatesMgr( wxFrameLayout* pPanel )
  64     : cbSimpleUpdatesMgr( pPanel )
  65 {}
  66
  67 void cbGCUpdatesMgr::AddItem( wxList&     itemList,
  68                               cbBarInfo*  pBar,
  69                               cbDockPane* pPane,
  70                               wxRect&     curBounds,
  71                               wxRect&     prevBounds )
  72 {
  73     cbRectInfo* pInfo = new cbRectInfo();
  74
  75     pInfo->mpBar     = pBar;
  76     pInfo->mpPane       = pPane;
  77     pInfo->mpCurBounds  = &curBounds;
  78     pInfo->mpPrevBounds = &prevBounds;
  79
  80     itemList.Append( (wxObject*) pInfo );
  81 }
  82
  83 void cbGCUpdatesMgr::OnStartChanges()
  84 {
  85     // memorize states of ALL items in the layout -
  86     // this is quite excessive, but OK for the decent
  87     // implementation of updates manager
  88
  89     mpLayout->GetPrevClientRect() = mpLayout->GetClientRect();
  90
  91     cbDockPane** panes = mpLayout->GetPanesArray();
  92
  93     for( int n = 0; n != MAX_PANES; ++n )
  94     {
  95         cbDockPane& pane = *(panes[n]);
  96
  97         // store pane state
  98         pane.mUMgrData.StoreItemState( pane.mBoundsInParent );
  99         pane.mUMgrData.SetDirty( FALSE );
 100
 101         cbRowInfo* pRow = pane.GetFirstRow();
 102
 103         while ( pRow )
 104         {
 105             cbBarInfo* pBar = pRow->GetFirstBar();
 106
 107             // store row state
 108             pRow->mUMgrData.StoreItemState( pRow->mBoundsInParent );
 109             pRow->mUMgrData.SetDirty( FALSE );
 110
 111             while( pBar )
 112             {
 113                 // store bar state
 114                 pBar->mUMgrData.StoreItemState( pBar->mBoundsInParent );
 115                 pBar->mUMgrData.SetDirty( FALSE );
 116
 117                 pBar = pBar->mpNext;
 118             }
 119
 120             pRow = pRow->mpNext;
 121         }
 122     }
 123 }
 124
 125 void cbGCUpdatesMgr::UpdateNow()
 126 {
 127     cbDockPane** panes = mpLayout->GetPanesArray();
 128
 129     wxRect& r1 = mpLayout->GetClientRect();
 130     wxRect& r2 = mpLayout->GetPrevClientRect();
 131
 132     // detect changes in client window's area
 133
 134     bool clientWindowChanged = ( r1.x      != r2.x     ||
 135                                  r1.y      != r2.y     ||
 136                                  r1.width  != r2.width ||
 137                                  r1.height != r2.height );
 138
 139     // step #1 - detect changes in each row of each pane,
 140     //           and repaint decorations around changed windows
 141
 142     wxList mBarsToResize;
 143
 144     int n;
 145     for ( n = 0; n != MAX_PANES; ++n )
 146     {
 147         cbDockPane& pane = *(panes[n]);
 148
 149         bool paneChanged = WasChanged( pane.mUMgrData, pane.mBoundsInParent );
 150
 151         if ( paneChanged )
 152         {
 153             wxClientDC dc( &mpLayout->GetParentFrame() );
 154             pane.PaintPaneBackground( dc );
 155         }
 156
 157         wxRect realBounds;
 158
 159         cbRowInfo* pRow = pane.GetFirstRow();
 160
 161         while ( pRow )
 162         {
 163             wxDC* pDc = 0;
 164
 165             cbBarInfo* pBar = pRow->GetFirstBar();
 166
 167             bool rowChanged = FALSE;
 168 //            bool rowBkPainted  = FALSE;
 169
 170             // FIXME:: the below should not be fixed
 171             cbBarInfo* barsToRepaint[128];
 172             // number of bars, that were changed in the current row
 173             int nBars = 0;
 174
 175             wxRect r1 = pRow->mUMgrData.mPrevBounds;
 176             wxRect r2 = pRow->mBoundsInParent;
 177
 178             if ( WasChanged( pRow->mUMgrData, pRow->mBoundsInParent ) )
 179
 180                 rowChanged = TRUE;
 181             else
 182                 while( pBar )
 183                 {
 184                     if ( WasChanged( pBar->mUMgrData, pBar->mBoundsInParent ) )
 185
 186                         barsToRepaint[nBars++] = pBar;
 187
 188                     pBar = pBar->mpNext;
 189                 }
 190
 191             if ( nBars || rowChanged )
 192             {
 193                 realBounds = pRow->mBoundsInParent;
 194
 195                 // include 1-pixel thick shades around the row
 196                 realBounds.x -= 1;
 197                 realBounds.y -= 1;
 198                 realBounds.width  += 2;
 199                 realBounds.height += 2;
 200
 201                 pDc = pane.StartDrawInArea( realBounds );
 202             }
 203
 204             if ( rowChanged )
 205             {
 206                 // postphone the resizement and refreshing the changed
 207                 // bar windows
 208
 209                 cbBarInfo* pCurBar = pRow->GetFirstBar();
 210
 211                 while ( pCurBar )
 212                 {
 213                     if ( WasChanged( pCurBar->mUMgrData,
 214                                      pCurBar->mBoundsInParent ) )
 215
 216                         AddItem( mBarsToResize, pCurBar, &pane,
 217                                  pCurBar->mBoundsInParent,
 218                                  pCurBar->mUMgrData.mPrevBounds );
 219
 220                     pCurBar = pCurBar->mpNext;
 221                 }
 222
 223                 // draw only their decorations now
 224
 225                 pane.PaintRow( pRow, *pDc );
 226             }
 227             else
 228             if ( nBars != 0 )
 229             {
 230                 for ( int i = 0; i != nBars; ++i )
 231
 232                     // postphone the resizement and refreshing the changed
 233                     // bar windows
 234
 235                     AddItem( mBarsToResize,
 236                              barsToRepaint[i],
 237                              &pane,
 238                              barsToRepaint[i]->mBoundsInParent,
 239                              barsToRepaint[i]->mUMgrData.mPrevBounds );
 240
 241                 // redraw decorations of entire row, regardless of how much
 242                 // of the bars were changed
 243
 244                 pane.PaintRow( pRow, *pDc );
 245             }
 246
 247             if ( pDc )
 248
 249                 pane.FinishDrawInArea( realBounds );
 250
 251             pRow = pRow->mpNext;
 252
 253         } // end of while
 254
 255         if ( paneChanged )
 256         {
 257             wxClientDC dc( &mpLayout->GetParentFrame() );
 258             pane.PaintPaneDecorations( dc );
 259         }
 260
 261     } // end of for
 262
 263     if ( clientWindowChanged && !mpLayout->mClientWndRefreshPending )
 264     {
 265         // ptr to client-window object is "marked" as NULL
 266
 267         AddItem( mBarsToResize, NULL, NULL,
 268                  mpLayout->GetClientRect(),
 269                  mpLayout->GetPrevClientRect() );
 270     }
 271
 272     // step #2 - do ordered refreshing and resizing of bar window objects now
 273
 274     DoRepositionItems( mBarsToResize );
 275 }
 276
 277 void cbGCUpdatesMgr::DoRepositionItems( wxList& items )
 278 {
 279     wxNode* pNode1 = items.First();
 280
 281     while( pNode1 )
 282     {
 283         cbRectInfo& info = node_to_rect_info( pNode1 );
 284
 285         wxNode* pNode2 = items.First();
 286
 287         // and node itself
 288
 289         mGC.AddObject( &info );
 290
 291         while( pNode2 )
 292         {
 293             if ( pNode2 != pNode1 ) // node should not depend on itself
 294             {
 295                 // Add references to objects on which this object
 296                 // depends. Dependency here indicates intersection of current
 297                 // bounds of this object with the initial bounds of the
 298                 // other object.
 299
 300                 cbRectInfo& otherInfo = node_to_rect_info( pNode2 );
 301
 302                 if ( rect_hits_rect( *info.mpCurBounds, *otherInfo.mpPrevBounds ) )
 303
 304                                     // the node    depends on node
 305                     mGC.AddDependency( &info,      &otherInfo      );
 306             }
 307
 308             pNode2 = pNode2->Next();
 309         }
 310
 311         pNode1 = pNode1->Next();
 312     }
 313
 314     mGC.ArrangeCollection(); // order nodes according "least-dependency" rule,
 315                              // and find out cycled chains
 316
 317     // Regular item nodes need to be resized, but not repainted (since
 318     // they stand in linear (not cyclic) dependency with other
 319     // regular nodes).
 320
 321     wxNode* pNode = mGC.GetRegularObjects().First();
 322
 323     while ( pNode )
 324     {
 325         cbRectInfo& info = *((cbRectInfo*)gc_node_to_obj(pNode));
 326
 327         if ( info.mpBar == NULL )
 328
 329             mpLayout->PositionClientWindow();
 330         else
 331             info.mpPane->SizeBar( info.mpBar );
 332
 333         pNode = pNode->Next();
 334     }
 335
 336     // cycled item nodes, need to be both resized and repainted
 337
 338     pNode = mGC.GetCycledObjects().First();
 339
 340     while ( pNode )
 341     {
 342         cbRectInfo& info = *((cbRectInfo*)gc_node_to_obj(pNode));
 343
 344         if ( info.mpBar == NULL )
 345         {
 346             wxWindow* pClntWnd = mpLayout->GetFrameClient();
 347
 348             mpLayout->PositionClientWindow();
 349
 350             // FIXME FIXME:: excessive!
 351
 352             pClntWnd->Show( FALSE );
 353             pClntWnd->Show( TRUE  );
 354
 355             // OLD STUFF:: mpLayout->PositionClientWindow();
 356         }
 357         else
 358         if ( info.mpBar->mpBarWnd )
 359         {
 360             wxWindow* pWnd = info.mpBar->mpBarWnd;
 361
 362             // resize
 363             info.mpPane->SizeBar( info.mpBar );
 364
 365             // repaint
 366
 367             /* OLD STUFF:: bool isChoice = info.mpBar->IsKindOf( CLASSINFO( wxChoice ) );
 368
 369             //#ifdef __WINDOWS__
 370             //int result = ::SendMessage( (HWND)pWnd->m_hWnd, WM_NCPAINT, 0, 0 );
 371             //#endif
 372             */
 373
 374             // FIXME FIXME:: there's no other way to repaint non-client area of the wxWindow!!
 375             //                 so we do *excessive* "hide 'n show"
 376
 377             pWnd->Show(FALSE);
 378             pWnd->Show(TRUE);
 379
 380             pWnd->Refresh();
 381         }
 382
 383         pNode = pNode->Next();
 384     }
 385
 386     // release data prepared for GC alg.
 387
 388     pNode = items.First();
 389
 390     while( pNode )
 391     {
 392         cbRectInfo* pInfo = (cbRectInfo*)(pNode->Data());
 393
 394         delete pInfo;
 395
 396         pNode = pNode->Next();
 397     }
 398
 399     mGC.Reset(); // reinit GC
 400
 401     // FIXME:: this is a dirty-workaround for messy client-area,
 402     //         as a result of docking bar out of floated-container window
 403
 404     if ( mpLayout->mClientWndRefreshPending )
 405     {
 406         mpLayout->PositionClientWindow();
 407         mpLayout->GetFrameClient()->Refresh();
 408     }
 409 }
 410