src/generic/tabg.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        tabg.cpp
   3 // Purpose:     Generic tabbed dialogs
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     01/02/97
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c)
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation "tabg.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 <stdio.h>
  28 #include <stdlib.h>
  29 #include <stdarg.h>
  30 #include <math.h>
  31
  32 #include "wx/tab.h"
  33
  34 // not defined: use old, square tab implementation (fills in tabs)
  35 // defined: use new, rounded tab implementation (doesn't colour in tabs)
  36 // #define wxUSE_NEW_METHOD
  37
  38 IMPLEMENT_DYNAMIC_CLASS(wxTabControl, wxObject)
  39
  40 IMPLEMENT_DYNAMIC_CLASS(wxTabLayer, wxList)
  41
  42 wxTabControl::wxTabControl(wxTabView *v)
  43 {
  44   m_view = v;
  45   m_isSelected = FALSE;
  46   m_offsetX = 0;
  47   m_offsetY = 0;
  48   m_width = 0;
  49   m_height = 0;
  50   m_id = 0;
  51   m_rowPosition = 0;
  52   m_colPosition = 0;
  53 }
  54
  55 wxTabControl::~wxTabControl(void)
  56 {
  57 }
  58
  59 void wxTabControl::OnDraw(wxDC& dc, bool lastInRow)
  60 {
  61     // Old, but in some ways better (drawing opaque tabs)
  62 #ifndef wxUSE_NEW_METHOD
  63   if (!m_view)
  64     return;
  65
  66   // Top-left of tab view area
  67   int viewX = m_view->GetViewRect().x;
  68   int viewY = m_view->GetViewRect().y;
  69
  70   // Top-left of tab control
  71   int tabX = GetX() + viewX;
  72   int tabY = GetY() + viewY;
  73   int tabHeightInc = 0;
  74   if (m_isSelected)
  75   {
  76     tabHeightInc = (m_view->GetTabSelectionHeight() - m_view->GetTabHeight());
  77     tabY -= tabHeightInc;
  78   }
  79
  80   dc.SetPen(*wxTRANSPARENT_PEN);
  81
  82   // Draw grey background
  83   if (m_view->GetTabStyle() & wxTAB_STYLE_COLOUR_INTERIOR)
  84   {
  85     dc.SetBrush(*m_view->GetBackgroundBrush());
  86
  87     // Add 1 because the pen is transparent. Under Motif, may be different.
  88 #ifdef __WXMOTIF__
  89     dc.DrawRectangle(tabX, tabY, (GetWidth()+1), (GetHeight() + tabHeightInc));
  90 #else
  91     dc.DrawRectangle(tabX, tabY, (GetWidth()+1), (GetHeight() + 1 + tabHeightInc));
  92 #endif
  93   }
  94
  95   // Draw highlight and shadow
  96   dc.SetPen(*m_view->GetHighlightPen());
  97
  98   // Calculate the top of the tab beneath. It's the height of the tab, MINUS
  99   // a bit if the tab below happens to be selected. Check.
 100   wxTabControl *tabBeneath = NULL;
 101   int subtractThis = 0;
 102   if (GetColPosition() > 0)
 103     tabBeneath = m_view->FindTabControlForPosition(GetColPosition() - 1, GetRowPosition());
 104   if (tabBeneath && tabBeneath->IsSelected())
 105     subtractThis = (m_view->GetTabSelectionHeight() - m_view->GetTabHeight());
 106
 107   // Vertical highlight: if first tab, draw to bottom of view
 108   if (tabX == m_view->GetViewRect().x && (m_view->GetTabStyle() & wxTAB_STYLE_DRAW_BOX))
 109     dc.DrawLine(tabX, tabY, tabX, (m_view->GetViewRect().y + m_view->GetViewRect().height));
 110   else if (tabX == m_view->GetViewRect().x)
 111     // Not box drawing, just to top of view.
 112     dc.DrawLine(tabX, tabY, tabX, (m_view->GetViewRect().y));
 113   else
 114     dc.DrawLine(tabX, tabY, tabX, (tabY + GetHeight() + tabHeightInc - subtractThis));
 115
 116   dc.DrawLine(tabX, tabY, (tabX + GetWidth()), tabY);
 117   dc.SetPen(*m_view->GetShadowPen());
 118
 119   // Test if we're outside the right-hand edge of the view area
 120   if (((tabX + GetWidth()) >= m_view->GetViewRect().x + m_view->GetViewRect().width) && (m_view->GetTabStyle() & wxTAB_STYLE_DRAW_BOX))
 121   {
 122     int bottomY = m_view->GetViewRect().y + m_view->GetViewRect().height + GetY() + m_view->GetTabHeight() + m_view->GetTopMargin();
 123     // Add a tab height since we wish to draw to the bottom of the view.
 124     dc.DrawLine((tabX + GetWidth()), tabY,
 125       (tabX + GetWidth()), bottomY);
 126
 127     // Calculate the far-right of the view, since we don't wish to
 128     // draw inside that
 129     int rightOfView = m_view->GetViewRect().x + m_view->GetViewRect().width + 1;
 130
 131     // Draw the horizontal bit to connect to the view rectangle
 132     dc.DrawLine((wxMax((tabX + GetWidth() - m_view->GetHorizontalTabOffset()), rightOfView)), (bottomY-1),
 133       (tabX + GetWidth()), (bottomY-1));
 134
 135     // Draw black line to emphasize shadow
 136     dc.SetPen(*wxBLACK_PEN);
 137     dc.DrawLine((tabX + GetWidth() + 1), (tabY+1),
 138       (tabX + GetWidth() + 1), bottomY);
 139
 140     // Draw the horizontal bit to connect to the view rectangle
 141     dc.DrawLine((wxMax((tabX + GetWidth() - m_view->GetHorizontalTabOffset()), rightOfView)), (bottomY),
 142       (tabX + GetWidth() + 1), (bottomY));
 143   }
 144   else
 145   {
 146     if (lastInRow)
 147     {
 148       // 25/5/97 UNLESS it's less than the max number of positions in this row
 149
 150       int topY = m_view->GetViewRect().y - m_view->GetTopMargin();
 151
 152       int maxPositions = ((wxTabLayer *)m_view->GetLayers().Nth(0)->Data())->Number();
 153
 154       // Only down to the bottom of the tab, not to the top of the view
 155       if ( GetRowPosition() < (maxPositions - 1) )
 156         topY = tabY + GetHeight() + tabHeightInc;
 157
 158 #ifdef __WXMOTIF__
 159       topY -= 1;
 160 #endif
 161
 162       // Shadow
 163       dc.DrawLine((tabX + GetWidth()), tabY, (tabX + GetWidth()), topY);
 164       // Draw black line to emphasize shadow
 165       dc.SetPen(*wxBLACK_PEN);
 166       dc.DrawLine((tabX + GetWidth() + 1), (tabY+1), (tabX + GetWidth() + 1),
 167          topY);
 168     }
 169     else
 170     {
 171       // Calculate the top of the tab beneath. It's the height of the tab, MINUS
 172       // a bit if the tab below (and next col along) happens to be selected. Check.
 173       wxTabControl *tabBeneath = NULL;
 174       int subtractThis = 0;
 175       if (GetColPosition() > 0)
 176         tabBeneath = m_view->FindTabControlForPosition(GetColPosition() - 1, GetRowPosition() + 1);
 177       if (tabBeneath && tabBeneath->IsSelected())
 178         subtractThis = (m_view->GetTabSelectionHeight() - m_view->GetTabHeight());
 179
 180 #ifdef __WXMOTIF__
 181       subtractThis += 1;
 182 #endif
 183
 184       // Draw only to next tab down.
 185       dc.DrawLine((tabX + GetWidth()), tabY,
 186          (tabX + GetWidth()), (tabY + GetHeight() + tabHeightInc - subtractThis));
 187
 188       // Draw black line to emphasize shadow
 189       dc.SetPen(*wxBLACK_PEN);
 190       dc.DrawLine((tabX + GetWidth() + 1), (tabY+1), (tabX + GetWidth() + 1),
 191          (tabY + GetHeight() + tabHeightInc - subtractThis));
 192     }
 193   }
 194
 195   // Draw centered text
 196   int textY = tabY + m_view->GetVerticalTabTextSpacing() + tabHeightInc;
 197
 198   if (m_isSelected)
 199     dc.SetFont(* m_view->GetSelectedTabFont());
 200   else
 201     dc.SetFont(* GetFont());
 202
 203   wxColour col(m_view->GetTextColour());
 204   dc.SetTextForeground(col);
 205   dc.SetBackgroundMode(wxTRANSPARENT);
 206   long textWidth, textHeight;
 207   dc.GetTextExtent(GetLabel(), &textWidth, &textHeight);
 208
 209   int textX = (int)(tabX + (GetWidth() - textWidth)/2.0);
 210   if (textX < (tabX + 2))
 211     textX = (tabX + 2);
 212
 213   dc.SetClippingRegion(tabX, tabY, GetWidth(), GetHeight());
 214   dc.DrawText(GetLabel(), textX, textY);
 215   dc.DestroyClippingRegion();
 216
 217   if (m_isSelected)
 218   {
 219     dc.SetPen(*m_view->GetHighlightPen());
 220
 221     // Draw white highlight from the tab's left side to the left hand edge of the view
 222     dc.DrawLine(m_view->GetViewRect().x, (tabY + GetHeight() + tabHeightInc),
 223      tabX, (tabY + GetHeight() + tabHeightInc));
 224
 225     // Draw white highlight from the tab's right side to the right hand edge of the view
 226     dc.DrawLine((tabX + GetWidth()), (tabY + GetHeight() + tabHeightInc),
 227      m_view->GetViewRect().x + m_view->GetViewRect().width, (tabY + GetHeight() + tabHeightInc));
 228   }
 229 #else
 230     // New HEL version with rounder tabs
 231
 232     if (!m_view) return;
 233
 234     int tabInc   = 0;
 235     if (m_isSelected)
 236     {
 237         tabInc = m_view->GetTabSelectionHeight() - m_view->GetTabHeight();
 238     }
 239     int tabLeft  = GetX() + m_view->GetViewRect().x;
 240     int tabTop   = GetY() + m_view->GetViewRect().y - tabInc;
 241     int tabRight = tabLeft + m_view->GetTabWidth();
 242     int left     = m_view->GetViewRect().x;
 243     int top      = tabTop + m_view->GetTabHeight() + tabInc;
 244     int right    = left + m_view->GetViewRect().width;
 245     int bottom   = top + m_view->GetViewRect().height;
 246
 247     if (m_isSelected)
 248     {
 249         // TAB is selected - draw TAB and the View's full outline
 250
 251         dc.SetPen(*(m_view->GetHighlightPen()));
 252         wxPoint pnts[10];
 253         int n = 0;
 254         pnts[n].x = left;            pnts[n++].y = bottom;
 255         pnts[n].x = left;             pnts[n++].y = top;
 256         pnts[n].x = tabLeft;         pnts[n++].y = top;
 257         pnts[n].x = tabLeft;            pnts[n++].y = tabTop + 2;
 258         pnts[n].x = tabLeft + 2;        pnts[n++].y = tabTop;
 259         pnts[n].x = tabRight - 1;    pnts[n++].y = tabTop;
 260         dc.DrawLines(n, pnts);
 261         if (!lastInRow)
 262         {
 263             dc.DrawLine(
 264                     (tabRight + 2),
 265                     top,
 266                     right,
 267                     top
 268                     );
 269         }
 270
 271         dc.SetPen(*(m_view->GetShadowPen()));
 272         dc.DrawLine(
 273                 tabRight,
 274                 tabTop + 2,
 275                 tabRight,
 276                 top
 277                 );
 278         dc.DrawLine(
 279                 right,
 280                 top,
 281                 right,
 282                 bottom
 283                 );
 284         dc.DrawLine(
 285                 right,
 286                 bottom,
 287                 left,
 288                 bottom
 289                 );
 290
 291         dc.SetPen(*wxBLACK_PEN);
 292         dc.DrawPoint(
 293                 tabRight,
 294                 tabTop + 1
 295                 );
 296         dc.DrawPoint(
 297                 tabRight + 1,
 298                 tabTop + 2
 299                 );
 300         if (lastInRow)
 301         {
 302             dc.DrawLine(
 303                 tabRight + 1,
 304                 bottom,
 305                 tabRight + 1,
 306                 tabTop + 1
 307                 );
 308         }
 309         else
 310         {
 311             dc.DrawLine(
 312                 tabRight + 1,
 313                 tabTop + 2,
 314                 tabRight + 1,
 315                 top
 316                 );
 317             dc.DrawLine(
 318                 right + 1,
 319                 top,
 320                 right + 1,
 321                 bottom + 1
 322                 );
 323         }
 324         dc.DrawLine(
 325                 right + 1,
 326                 bottom + 1,
 327                 left + 1,
 328                 bottom + 1
 329                 );
 330     }
 331     else
 332     {
 333         // TAB is not selected - just draw TAB outline and RH edge
 334         // if the TAB is the last in the row
 335
 336         int maxPositions = ((wxTabLayer*)m_view->GetLayers().Nth(0)->Data())->Number();
 337         wxTabControl* tabBelow = 0;
 338         wxTabControl* tabBelowRight = 0;
 339         if (GetColPosition() > 0)
 340         {
 341             tabBelow = m_view->FindTabControlForPosition(
 342                         GetColPosition() - 1,
 343                         GetRowPosition()
 344                         );
 345         }
 346         if (!lastInRow && GetColPosition() > 0)
 347         {
 348             tabBelowRight = m_view->FindTabControlForPosition(
 349                         GetColPosition() - 1,
 350                         GetRowPosition() + 1
 351                         );
 352         }
 353
 354         float raisedTop = top - m_view->GetTabSelectionHeight() +
 355                             m_view->GetTabHeight();
 356
 357         dc.SetPen(*(m_view->GetHighlightPen()));
 358         wxPoint pnts[10];
 359         int n = 0;
 360
 361         pnts[n].x = tabLeft;
 362
 363         if (tabBelow && tabBelow->IsSelected())
 364         {
 365             pnts[n++].y = (long)raisedTop;
 366         }
 367         else
 368         {
 369             pnts[n++].y = top;
 370         }
 371         pnts[n].x = tabLeft;            pnts[n++].y = tabTop + 2;
 372         pnts[n].x = tabLeft + 2;        pnts[n++].y = tabTop;
 373         pnts[n].x = tabRight - 1;    pnts[n++].y = tabTop;
 374         dc.DrawLines(n, pnts);
 375
 376         dc.SetPen(*(m_view->GetShadowPen()));
 377         if (GetRowPosition() >= maxPositions - 1)
 378         {
 379             dc.DrawLine(
 380                     tabRight,
 381                     (tabTop + 2),
 382                     tabRight,
 383                     bottom
 384                     );
 385             dc.DrawLine(
 386                     tabRight,
 387                     bottom,
 388                     (tabRight - m_view->GetHorizontalTabOffset()),
 389                     bottom
 390                     );
 391         }
 392         else
 393         {
 394             if (tabBelowRight && tabBelowRight->IsSelected())
 395             {
 396                 dc.DrawLine(
 397                         tabRight,
 398                         (long)raisedTop,
 399                         tabRight,
 400                         tabTop + 1
 401                         );
 402             }
 403             else
 404             {
 405                 dc.DrawLine(
 406                         tabRight,
 407                         top - 1,
 408                         tabRight,
 409                         tabTop + 1
 410                         );
 411             }
 412         }
 413
 414         dc.SetPen(*wxBLACK_PEN);
 415         dc.DrawPoint(
 416                 tabRight,
 417                 tabTop + 1
 418                 );
 419         dc.DrawPoint(
 420                 tabRight + 1,
 421                 tabTop + 2
 422                 );
 423         if (GetRowPosition() >= maxPositions - 1)
 424         {
 425             // draw right hand edge to bottom of view
 426             dc.DrawLine(
 427                     tabRight + 1,
 428                     bottom + 1,
 429                     tabRight + 1,
 430                     tabTop + 2
 431                     );
 432             dc.DrawLine(
 433                     tabRight + 1,
 434                     bottom + 1,
 435                     (tabRight - m_view->GetHorizontalTabOffset()),
 436                     bottom + 1
 437                     );
 438         }
 439         else
 440         {
 441             // draw right hand edge of TAB
 442             if (tabBelowRight && tabBelowRight->IsSelected())
 443             {
 444                 dc.DrawLine(
 445                         tabRight + 1,
 446                         (long)(raisedTop - 1),
 447                         tabRight + 1,
 448                         tabTop + 2
 449                         );
 450             }
 451             else
 452             {
 453                 dc.DrawLine(
 454                         tabRight + 1,
 455                         top - 1,
 456                         tabRight + 1,
 457                         tabTop + 2
 458                         );
 459             }
 460         }
 461     }
 462
 463     // Draw centered text
 464     dc.SetPen(*wxBLACK_PEN);
 465     if (m_isSelected)
 466     {
 467         dc.SetFont(*(m_view->GetSelectedTabFont()));
 468     }
 469     else
 470     {
 471         dc.SetFont(*(GetFont()));
 472     }
 473
 474     wxColour col(m_view->GetTextColour());
 475     dc.SetTextForeground(col);
 476     dc.SetBackgroundMode(wxTRANSPARENT);
 477     long textWidth, textHeight;
 478     dc.GetTextExtent(GetLabel(), &textWidth, &textHeight);
 479
 480     float textX = (tabLeft + tabRight - textWidth) / 2;
 481     float textY = (tabInc + tabTop + m_view->GetVerticalTabTextSpacing());
 482
 483     dc.DrawText(GetLabel(), (long)textX, (long)textY);
 484 #endif
 485 }
 486
 487 bool wxTabControl::HitTest(int x, int y) const
 488 {
 489   // Top-left of tab control
 490   int tabX1 = GetX() + m_view->GetViewRect().x;
 491   int tabY1 = GetY() + m_view->GetViewRect().y;
 492
 493   // Bottom-right
 494   int tabX2 = tabX1 + GetWidth();
 495   int tabY2 = tabY1 + GetHeight();
 496
 497   if (x >= tabX1 && y >= tabY1 && x <= tabX2 && y <= tabY2)
 498     return TRUE;
 499   else
 500     return FALSE;
 501 }
 502
 503 IMPLEMENT_DYNAMIC_CLASS(wxTabView, wxObject)
 504
 505 wxTabView::wxTabView(long style)
 506 {
 507   m_noTabs = 0;
 508   m_tabStyle = style;
 509   m_tabSelection = -1;
 510   m_tabHeight = 20;
 511   m_tabSelectionHeight = m_tabHeight + 2;
 512   m_tabWidth = 80;
 513   m_tabHorizontalOffset = 10;
 514   m_tabHorizontalSpacing = 2;
 515   m_tabVerticalTextSpacing = 3;
 516   m_topMargin = 5;
 517   m_tabViewRect.x = 20;
 518   m_tabViewRect.y = 20;
 519   m_tabViewRect.width = 300;
 520   m_tabViewRect.x = 300;
 521   m_highlightColour = *wxWHITE;
 522   m_shadowColour = wxColour(128, 128, 128);
 523   m_backgroundColour = *wxLIGHT_GREY;
 524   m_textColour = *wxBLACK;
 525   m_highlightPen = wxWHITE_PEN;
 526   m_shadowPen = wxGREY_PEN;
 527   m_backgroundPen = wxLIGHT_GREY_PEN;
 528   m_backgroundBrush = wxLIGHT_GREY_BRUSH;
 529   m_tabFont = wxSystemSettings::GetSystemFont(wxSYS_DEFAULT_GUI_FONT);
 530   m_tabSelectedFont = wxSystemSettings::GetSystemFont(wxSYS_DEFAULT_GUI_FONT);
 531   m_window = (wxWindow *) NULL;
 532 }
 533
 534 wxTabView::~wxTabView()
 535 {
 536   ClearTabs(TRUE);
 537 }
 538
 539 // Automatically positions tabs
 540 // TODO: this should just add the tab to a list, and then
 541 // a layout function (e.g. Realize) should be called when all tabs have been added.
 542 // The view rect could easily change as the view window is resized.
 543 wxTabControl *wxTabView::AddTab(int id, const wxString& label, wxTabControl *existingTab)
 544 {
 545   // First, find which layer we should be adding to.
 546   wxNode *node = m_layers.Last();
 547   if (!node)
 548   {
 549     wxTabLayer *newLayer = new wxTabLayer;
 550     node = m_layers.Append(newLayer);
 551   }
 552   // Check if adding another tab control would go off the
 553   // right-hand edge of the layer.
 554   wxTabLayer *tabLayer = (wxTabLayer *)node->Data();
 555   wxNode *lastTabNode = tabLayer->Last();
 556   if (lastTabNode)
 557   {
 558     wxTabControl *lastTab = (wxTabControl *)lastTabNode->Data();
 559     // Start another layer (row).
 560     // Tricky choice: can't just check if will be overlapping the edge, because
 561     // this happens anyway for 2nd and subsequent rows.
 562     // Should check this for 1st row, and then subsequent rows should not exceed 1st
 563     // in length.
 564     if (((tabLayer == m_layers.First()->Data()) && ((lastTab->GetX() + 2*lastTab->GetWidth() + GetHorizontalTabSpacing())
 565               > GetViewRect().width)) ||
 566         ((tabLayer != m_layers.First()->Data()) && (tabLayer->Number() == ((wxTabLayer *)m_layers.First()->Data())->Number())))
 567     {
 568       tabLayer = new wxTabLayer;
 569       m_layers.Append(tabLayer);
 570       lastTabNode = (wxNode *) NULL;
 571     }
 572   }
 573   int layer = m_layers.Number() - 1;
 574
 575   wxTabControl *tabControl = existingTab;
 576   if (!existingTab)
 577     tabControl = OnCreateTabControl();
 578   tabControl->SetRowPosition(tabLayer->Number());
 579   tabControl->SetColPosition(layer);
 580
 581   wxTabControl *lastTab = (wxTabControl *) NULL;
 582   if (lastTabNode)
 583     lastTab = (wxTabControl *)lastTabNode->Data();
 584
 585   // Top of new tab
 586   int verticalOffset = (- GetTopMargin()) - ((layer+1)*GetTabHeight());
 587   // Offset from view top-left
 588   int horizontalOffset = 0;
 589   if (!lastTab)
 590     horizontalOffset = layer*GetHorizontalTabOffset();
 591   else
 592     horizontalOffset = lastTab->GetX() + GetTabWidth() + GetHorizontalTabSpacing();
 593
 594   tabControl->SetPosition(horizontalOffset, verticalOffset);
 595   tabControl->SetSize(GetTabWidth(), GetTabHeight());
 596   tabControl->SetId(id);
 597   tabControl->SetLabel(label);
 598   tabControl->SetFont(* GetTabFont());
 599
 600   tabLayer->Append(tabControl);
 601   m_noTabs ++;
 602
 603   return tabControl;
 604 }
 605
 606 // Remove the tab without deleting the window
 607 bool wxTabView::RemoveTab(int id)
 608 {
 609   wxNode *layerNode = m_layers.First();
 610   while (layerNode)
 611   {
 612     wxTabLayer *layer = (wxTabLayer *)layerNode->Data();
 613     wxNode *tabNode = layer->First();
 614     while (tabNode)
 615     {
 616       wxTabControl *tab = (wxTabControl *)tabNode->Data();
 617       if (tab->GetId() == id)
 618       {
 619         if (id == m_tabSelection)
 620           m_tabSelection = -1;
 621         delete tab;
 622         delete tabNode;
 623         m_noTabs --;
 624
 625         // The layout has changed
 626         LayoutTabs();
 627         return TRUE;
 628       }
 629       tabNode = tabNode->Next();
 630     }
 631     layerNode = layerNode->Next();
 632   }
 633   return FALSE;
 634 }
 635
 636 bool wxTabView::SetTabText(int id, const wxString& label)
 637 {
 638     wxTabControl* control = FindTabControlForId(id);
 639     if (!control)
 640       return FALSE;
 641     control->SetLabel(label);
 642     return TRUE;
 643 }
 644
 645 wxString wxTabView::GetTabText(int id) const
 646 {
 647     wxTabControl* control = FindTabControlForId(id);
 648     if (!control)
 649       return wxEmptyString;
 650     else
 651       return control->GetLabel();
 652 }
 653
 654 // Returns the total height of the tabs component -- this may be several
 655 // times the height of a tab, if there are several tab layers (rows).
 656 int wxTabView::GetTotalTabHeight()
 657 {
 658   int minY = 0;
 659
 660   wxNode *layerNode = m_layers.First();
 661   while (layerNode)
 662   {
 663     wxTabLayer *layer = (wxTabLayer *)layerNode->Data();
 664     wxNode *tabNode = layer->First();
 665     while (tabNode)
 666     {
 667       wxTabControl *tab = (wxTabControl *)tabNode->Data();
 668
 669       if (tab->GetY() < minY)
 670         minY = tab->GetY();
 671
 672       tabNode = tabNode->Next();
 673     }
 674     layerNode = layerNode->Next();
 675   }
 676
 677   return - minY;
 678 }
 679
 680 void wxTabView::ClearTabs(bool deleteTabs)
 681 {
 682   wxNode *layerNode = m_layers.First();
 683   while (layerNode)
 684   {
 685     wxTabLayer *layer = (wxTabLayer *)layerNode->Data();
 686     wxNode *tabNode = layer->First();
 687     while (tabNode)
 688     {
 689       wxTabControl *tab = (wxTabControl *)tabNode->Data();
 690       if (deleteTabs)
 691         delete tab;
 692       wxNode *next = tabNode->Next();
 693       delete tabNode;
 694       tabNode = next;
 695     }
 696     wxNode *nextLayerNode = layerNode->Next();
 697     delete layer;
 698     delete layerNode;
 699     layerNode = nextLayerNode;
 700   }
 701   m_noTabs = 0;
 702 }
 703
 704
 705 // Layout tabs (optional, e.g. if resizing window)
 706 void wxTabView::LayoutTabs(void)
 707 {
 708   // Make a list of the tab controls, deleting the wxTabLayers.
 709   wxList controls;
 710
 711   wxNode *layerNode = m_layers.First();
 712   while (layerNode)
 713   {
 714     wxTabLayer *layer = (wxTabLayer *)layerNode->Data();
 715     wxNode *tabNode = layer->First();
 716     while (tabNode)
 717     {
 718       wxTabControl *tab = (wxTabControl *)tabNode->Data();
 719       controls.Append(tab);
 720       wxNode *next = tabNode->Next();
 721       delete tabNode;
 722       tabNode = next;
 723     }
 724     wxNode *nextLayerNode = layerNode->Next();
 725     delete layer;
 726     delete layerNode;
 727     layerNode = nextLayerNode;
 728   }
 729
 730   wxTabControl *lastTab = (wxTabControl *) NULL;
 731
 732   wxTabLayer *currentLayer = new wxTabLayer;
 733   m_layers.Append(currentLayer);
 734
 735   wxNode *node = controls.First();
 736   while (node)
 737   {
 738     wxTabControl *tabControl = (wxTabControl *)node->Data();
 739     if (lastTab)
 740     {
 741       // Start another layer (row).
 742       // Tricky choice: can't just check if will be overlapping the edge, because
 743       // this happens anyway for 2nd and subsequent rows.
 744       // Should check this for 1st row, and then subsequent rows should not exceed 1st
 745       // in length.
 746       if (((currentLayer == m_layers.First()->Data()) && ((lastTab->GetX() + 2*lastTab->GetWidth() + GetHorizontalTabSpacing())
 747                 > GetViewRect().width)) ||
 748           ((currentLayer != m_layers.First()->Data()) && (currentLayer->Number() == ((wxTabLayer *)m_layers.First()->Data())->Number())))
 749      {
 750        currentLayer = new wxTabLayer;
 751        m_layers.Append(currentLayer);
 752        lastTab = (wxTabControl *) NULL;
 753      }
 754     }
 755
 756     int layer = m_layers.Number() - 1;
 757
 758     tabControl->SetRowPosition(currentLayer->Number());
 759     tabControl->SetColPosition(layer);
 760
 761     // Top of new tab
 762     int verticalOffset = (- GetTopMargin()) - ((layer+1)*GetTabHeight());
 763     // Offset from view top-left
 764     int horizontalOffset = 0;
 765     if (!lastTab)
 766       horizontalOffset = layer*GetHorizontalTabOffset();
 767     else
 768       horizontalOffset = lastTab->GetX() + GetTabWidth() + GetHorizontalTabSpacing();
 769
 770     tabControl->SetPosition(horizontalOffset, verticalOffset);
 771     tabControl->SetSize(GetTabWidth(), GetTabHeight());
 772
 773     currentLayer->Append(tabControl);
 774     lastTab = tabControl;
 775
 776     node = node->Next();
 777   }
 778
 779   // Move the selected tab to the bottom
 780   wxTabControl *control = FindTabControlForId(m_tabSelection);
 781   if (control)
 782     MoveSelectionTab(control);
 783
 784 }
 785
 786 // Draw all tabs
 787 void wxTabView::Draw(wxDC& dc)
 788 {
 789         // Don't draw anything if there are no tabs.
 790         if (GetNumberOfTabs() == 0)
 791           return;
 792
 793     // Draw top margin area (beneath tabs and above view area)
 794     if (GetTabStyle() & wxTAB_STYLE_COLOUR_INTERIOR)
 795     {
 796         dc.SetPen(*wxTRANSPARENT_PEN);
 797         dc.SetBrush(*GetBackgroundBrush());
 798
 799         // Add 1 because the pen is transparent. Under Motif, may be different.
 800         dc.DrawRectangle(
 801                 m_tabViewRect.x,
 802                 (m_tabViewRect.y - m_topMargin),
 803                 (m_tabViewRect.width + 1),
 804                 (m_topMargin + 1)
 805                 );
 806     }
 807
 808     // Draw layers in reverse order
 809     wxNode *node = m_layers.Last();
 810     while (node)
 811     {
 812         wxTabLayer *layer = (wxTabLayer *)node->Data();
 813         wxNode *node2 = layer->First();
 814         while (node2)
 815         {
 816             wxTabControl *control = (wxTabControl *)node2->Data();
 817             control->OnDraw(dc, (node2->Next() == NULL));
 818             node2 = node2->Next();
 819         }
 820
 821         node = node->Previous();
 822     }
 823
 824
 825 #ifndef wxUSE_NEW_METHOD
 826     if (GetTabStyle() & wxTAB_STYLE_DRAW_BOX)
 827     {
 828         dc.SetPen(* GetShadowPen());
 829
 830         // Draw bottom line
 831         dc.DrawLine(
 832                 (GetViewRect().x + 1),
 833                 (GetViewRect().y + GetViewRect().height),
 834                 (GetViewRect().x + GetViewRect().width + 1),
 835                 (GetViewRect().y + GetViewRect().height)
 836                 );
 837
 838         // Draw right line
 839         dc.DrawLine(
 840                 (GetViewRect().x + GetViewRect().width),
 841                 (GetViewRect().y - GetTopMargin() + 1),
 842                 (GetViewRect().x + GetViewRect().width),
 843                 (GetViewRect().y + GetViewRect().height)
 844                 );
 845
 846         dc.SetPen(* wxBLACK_PEN);
 847
 848         // Draw bottom line
 849         dc.DrawLine(
 850                 (GetViewRect().x),
 851                 (GetViewRect().y + GetViewRect().height + 1),
 852 #if defined(__WXMOTIF__)
 853                 (GetViewRect().x + GetViewRect().width + 1),
 854 #else
 855                 (GetViewRect().x + GetViewRect().width + 2),
 856 #endif
 857
 858                 (GetViewRect().y + GetViewRect().height + 1)
 859                 );
 860
 861         // Draw right line
 862         dc.DrawLine(
 863                 (GetViewRect().x + GetViewRect().width + 1),
 864                 (GetViewRect().y - GetTopMargin()),
 865                 (GetViewRect().x + GetViewRect().width + 1),
 866                 (GetViewRect().y + GetViewRect().height + 1)
 867                 );
 868     }
 869 #endif
 870 }
 871
 872 // Process mouse event, return FALSE if we didn't process it
 873 bool wxTabView::OnEvent(wxMouseEvent& event)
 874 {
 875   if (!event.LeftDown())
 876     return FALSE;
 877
 878   long x, y;
 879   event.Position(&x, &y);
 880
 881   wxTabControl *hitControl = (wxTabControl *) NULL;
 882
 883   wxNode *node = m_layers.First();
 884   while (node)
 885   {
 886     wxTabLayer *layer = (wxTabLayer *)node->Data();
 887     wxNode *node2 = layer->First();
 888     while (node2)
 889     {
 890       wxTabControl *control = (wxTabControl *)node2->Data();
 891       if (control->HitTest((int)x, (int)y))
 892       {
 893         hitControl = control;
 894         node = (wxNode *) NULL;
 895         node2 = (wxNode *) NULL;
 896       }
 897       else
 898         node2 = node2->Next();
 899     }
 900
 901     if (node)
 902       node = node->Next();
 903   }
 904
 905   if (!hitControl)
 906     return FALSE;
 907
 908   wxTabControl *currentTab = FindTabControlForId(m_tabSelection);
 909
 910   if (hitControl == currentTab)
 911     return FALSE;
 912
 913   ChangeTab(hitControl);
 914
 915   return TRUE;
 916 }
 917
 918 bool wxTabView::ChangeTab(wxTabControl *control)
 919 {
 920   wxTabControl *currentTab = FindTabControlForId(m_tabSelection);
 921   int oldTab = -1;
 922   if (currentTab)
 923     oldTab = currentTab->GetId();
 924
 925   if (control == currentTab)
 926     return TRUE;
 927
 928   if (m_layers.Number() == 0)
 929     return FALSE;
 930
 931   if (!OnTabPreActivate(control->GetId(), oldTab))
 932     return FALSE;
 933
 934   // Move the tab to the bottom
 935   MoveSelectionTab(control);
 936
 937   if (currentTab)
 938     currentTab->SetSelected(FALSE);
 939
 940   control->SetSelected(TRUE);
 941   m_tabSelection = control->GetId();
 942
 943   OnTabActivate(control->GetId(), oldTab);
 944
 945   // Leave window refresh for the implementing window
 946
 947   return TRUE;
 948 }
 949
 950 // Move the selected tab to the bottom layer, if necessary,
 951 // without calling app activation code
 952 bool wxTabView::MoveSelectionTab(wxTabControl *control)
 953 {
 954   if (m_layers.Number() == 0)
 955     return FALSE;
 956
 957   wxTabLayer *firstLayer = (wxTabLayer *)m_layers.First()->Data();
 958
 959   // Find what column this tab is at, so we can swap with the one at the bottom.
 960   // If we're on the bottom layer, then no need to swap.
 961   if (!firstLayer->Member(control))
 962   {
 963     // Do a swap
 964     int col = 0;
 965     wxNode *thisNode = FindTabNodeAndColumn(control, &col);
 966     if (!thisNode)
 967       return FALSE;
 968     wxNode *otherNode = firstLayer->Nth(col);
 969     if (!otherNode)
 970       return FALSE;
 971
 972     // If this is already in the bottom layer, return now
 973     if (otherNode == thisNode)
 974       return TRUE;
 975
 976     wxTabControl *otherTab = (wxTabControl *)otherNode->Data();
 977
 978     // We now have pointers to the tab to be changed to,
 979     // and the tab on the first layer. Swap tab structures and
 980     // position details.
 981
 982     int thisX = control->GetX();
 983     int thisY = control->GetY();
 984     int thisColPos = control->GetColPosition();
 985     int otherX = otherTab->GetX();
 986     int otherY = otherTab->GetY();
 987     int otherColPos = otherTab->GetColPosition();
 988
 989     control->SetPosition(otherX, otherY);
 990     control->SetColPosition(otherColPos);
 991     otherTab->SetPosition(thisX, thisY);
 992     otherTab->SetColPosition(thisColPos);
 993
 994     // Swap the data for the nodes
 995     thisNode->SetData(otherTab);
 996     otherNode->SetData(control);
 997   }
 998   return TRUE;
 999 }
1000
1001 // Called when a tab is activated
1002 void wxTabView::OnTabActivate(int /*activateId*/, int /*deactivateId*/)
1003 {
1004 }
1005
1006 void wxTabView::SetHighlightColour(const wxColour& col)
1007 {
1008   m_highlightColour = col;
1009   m_highlightPen = wxThePenList->FindOrCreatePen(col, 1, wxSOLID);
1010 }
1011
1012 void wxTabView::SetShadowColour(const wxColour& col)
1013 {
1014   m_shadowColour = col;
1015   m_shadowPen = wxThePenList->FindOrCreatePen(col, 1, wxSOLID);
1016 }
1017
1018 void wxTabView::SetBackgroundColour(const wxColour& col)
1019 {
1020   m_backgroundColour = col;
1021   m_backgroundPen = wxThePenList->FindOrCreatePen(col, 1, wxSOLID);
1022   m_backgroundBrush = wxTheBrushList->FindOrCreateBrush(col, wxSOLID);
1023 }
1024
1025 void wxTabView::SetTabSelection(int sel, bool activateTool)
1026 {
1027   int oldSel = m_tabSelection;
1028   wxTabControl *control = FindTabControlForId(sel);
1029   wxTabControl *oldControl = FindTabControlForId(m_tabSelection);
1030
1031   if (!OnTabPreActivate(sel, oldSel))
1032     return;
1033
1034   if (control)
1035     control->SetSelected((sel != -1)); // TODO ??
1036   else if (sel != -1)
1037   {
1038     wxFAIL_MSG(_("Could not find tab for id"));
1039     return;
1040   }
1041
1042   if (oldControl)
1043     oldControl->SetSelected(FALSE);
1044
1045   m_tabSelection = sel;
1046
1047   if (control)
1048     MoveSelectionTab(control);
1049
1050   if (activateTool)
1051     OnTabActivate(sel, oldSel);
1052 }
1053
1054 // Find tab control for id
1055 wxTabControl *wxTabView::FindTabControlForId(int id) const
1056 {
1057   wxNode *node1 = m_layers.First();
1058   while (node1)
1059   {
1060     wxTabLayer *layer = (wxTabLayer *)node1->Data();
1061     wxNode *node2 = layer->First();
1062     while (node2)
1063     {
1064       wxTabControl *control = (wxTabControl *)node2->Data();
1065       if (control->GetId() == id)
1066         return control;
1067       node2 = node2->Next();
1068     }
1069     node1 = node1->Next();
1070   }
1071   return (wxTabControl *) NULL;
1072 }
1073
1074 // Find tab control for layer, position (starting from zero)
1075 wxTabControl *wxTabView::FindTabControlForPosition(int layer, int position) const
1076 {
1077   wxNode *node1 = m_layers.Nth(layer);
1078   if (!node1)
1079     return (wxTabControl *) NULL;
1080   wxTabLayer *tabLayer = (wxTabLayer *)node1->Data();
1081   wxNode *node2 = tabLayer->Nth(position);
1082   if (!node2)
1083     return (wxTabControl *) NULL;
1084   return (wxTabControl *)node2->Data();
1085 }
1086
1087 // Find the node and the column at which this control is positioned.
1088 wxNode *wxTabView::FindTabNodeAndColumn(wxTabControl *control, int *col) const
1089 {
1090   wxNode *node1 = m_layers.First();
1091   while (node1)
1092   {
1093     wxTabLayer *layer = (wxTabLayer *)node1->Data();
1094     int c = 0;
1095     wxNode *node2 = layer->First();
1096     while (node2)
1097     {
1098       wxTabControl *cnt = (wxTabControl *)node2->Data();
1099       if (cnt == control)
1100       {
1101         *col = c;
1102         return node2;
1103       }
1104       node2 = node2->Next();
1105       c ++;
1106     }
1107     node1 = node1->Next();
1108   }
1109   return (wxNode *) NULL;
1110 }
1111
1112 int wxTabView::CalculateTabWidth(int noTabs, bool adjustView)
1113 {
1114   m_tabWidth = (int)((m_tabViewRect.width - ((noTabs - 1)*GetHorizontalTabSpacing()))/noTabs);
1115   if (adjustView)
1116   {
1117     m_tabViewRect.width = noTabs*m_tabWidth + ((noTabs-1)*GetHorizontalTabSpacing());
1118   }
1119   return m_tabWidth;
1120 }
1121
1122 /*
1123  * wxTabbedDialog
1124  */
1125
1126 IMPLEMENT_CLASS(wxTabbedDialog, wxDialog)
1127
1128 BEGIN_EVENT_TABLE(wxTabbedDialog, wxDialog)
1129     EVT_CLOSE(wxTabbedDialog::OnCloseWindow)
1130     EVT_MOUSE_EVENTS(wxTabbedDialog::OnMouseEvent)
1131     EVT_PAINT(wxTabbedDialog::OnPaint)
1132 END_EVENT_TABLE()
1133
1134 wxTabbedDialog::wxTabbedDialog(wxWindow *parent, wxWindowID id,
1135     const wxString& title,
1136     const wxPoint& pos, const wxSize& size,
1137     long windowStyle, const wxString& name):
1138    wxDialog(parent, id, title, pos, size, windowStyle, name)
1139 {
1140   m_tabView = (wxTabView *) NULL;
1141 }
1142
1143 wxTabbedDialog::~wxTabbedDialog(void)
1144 {
1145   if (m_tabView)
1146     delete m_tabView;
1147 }
1148
1149 void wxTabbedDialog::OnCloseWindow(wxCloseEvent& WXUNUSED(event) )
1150 {
1151   Destroy();
1152 }
1153
1154 void wxTabbedDialog::OnMouseEvent(wxMouseEvent& event )
1155 {
1156   if (m_tabView)
1157     m_tabView->OnEvent(event);
1158 }
1159
1160 void wxTabbedDialog::OnPaint(wxPaintEvent& WXUNUSED(event) )
1161 {
1162     wxPaintDC dc(this);
1163     if (m_tabView)
1164         m_tabView->Draw(dc);
1165 }
1166
1167 /*
1168  * wxTabbedPanel
1169  */
1170
1171 IMPLEMENT_CLASS(wxTabbedPanel, wxPanel)
1172
1173 BEGIN_EVENT_TABLE(wxTabbedPanel, wxPanel)
1174     EVT_MOUSE_EVENTS(wxTabbedPanel::OnMouseEvent)
1175     EVT_PAINT(wxTabbedPanel::OnPaint)
1176 END_EVENT_TABLE()
1177
1178 wxTabbedPanel::wxTabbedPanel(wxWindow *parent, wxWindowID id, const wxPoint& pos,
1179    const wxSize& size, long windowStyle, const wxString& name):
1180    wxPanel(parent, id, pos, size, windowStyle, name)
1181 {
1182   m_tabView = (wxTabView *) NULL;
1183 }
1184
1185 wxTabbedPanel::~wxTabbedPanel(void)
1186 {
1187   delete m_tabView;
1188 }
1189
1190 void wxTabbedPanel::OnMouseEvent(wxMouseEvent& event)
1191 {
1192   if (m_tabView)
1193     m_tabView->OnEvent(event);
1194 }
1195
1196 void wxTabbedPanel::OnPaint(wxPaintEvent& WXUNUSED(event) )
1197 {
1198     wxPaintDC dc(this);
1199     if (m_tabView)
1200         m_tabView->Draw(dc);
1201 }
1202
1203 /*
1204  * wxPanelTabView
1205  */
1206
1207 IMPLEMENT_CLASS(wxPanelTabView, wxTabView)
1208
1209 wxPanelTabView::wxPanelTabView(wxPanel *pan, long style): wxTabView(style), m_tabWindows(wxKEY_INTEGER)
1210 {
1211   m_panel = pan;
1212   m_currentWindow = (wxWindow *) NULL;
1213
1214   if (m_panel->IsKindOf(CLASSINFO(wxTabbedDialog)))
1215     ((wxTabbedDialog *)m_panel)->SetTabView(this);
1216   else if (m_panel->IsKindOf(CLASSINFO(wxTabbedPanel)))
1217     ((wxTabbedPanel *)m_panel)->SetTabView(this);
1218
1219   SetWindow(m_panel);
1220 }
1221
1222 wxPanelTabView::~wxPanelTabView(void)
1223 {
1224   ClearWindows(TRUE);
1225 }
1226
1227 // Called when a tab is activated
1228 void wxPanelTabView::OnTabActivate(int activateId, int deactivateId)
1229 {
1230   if (!m_panel)
1231     return;
1232
1233   wxWindow *oldWindow = ((deactivateId == -1) ? 0 : GetTabWindow(deactivateId));
1234   wxWindow *newWindow = GetTabWindow(activateId);
1235
1236   if (oldWindow)
1237     oldWindow->Show(FALSE);
1238   if (newWindow)
1239     newWindow->Show(TRUE);
1240
1241   m_panel->Refresh();
1242 }
1243
1244
1245 void wxPanelTabView::AddTabWindow(int id, wxWindow *window)
1246 {
1247   m_tabWindows.Append((long)id, window);
1248   window->Show(FALSE);
1249 }
1250
1251 wxWindow *wxPanelTabView::GetTabWindow(int id) const
1252 {
1253   wxNode *node = m_tabWindows.Find((long)id);
1254   if (!node)
1255     return (wxWindow *) NULL;
1256   return (wxWindow *)node->Data();
1257 }
1258
1259 void wxPanelTabView::ClearWindows(bool deleteWindows)
1260 {
1261   if (deleteWindows)
1262     m_tabWindows.DeleteContents(TRUE);
1263   m_tabWindows.Clear();
1264   m_tabWindows.DeleteContents(FALSE);
1265 }
1266
1267 void wxPanelTabView::ShowWindowForTab(int id)
1268 {
1269   wxWindow *newWindow = GetTabWindow(id);
1270   if (newWindow == m_currentWindow)
1271     return;
1272   if (m_currentWindow)
1273     m_currentWindow->Show(FALSE);
1274   newWindow->Show(TRUE);
1275   newWindow->Refresh();
1276 }
1277