src/ribbon/buttonbar.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/ribbon/buttonbar.cpp
   3 // Purpose:     Ribbon control similar to a tool bar
   4 // Author:      Peter Cawley
   5 // Modified by:
   6 // Created:     2009-07-01
   7 // RCS-ID:      $Id$
   8 // Copyright:   (C) Peter Cawley
   9 // Licence:     wxWindows licence
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 #include "wx/wxprec.h"
  13
  14 #ifdef __BORLANDC__
  15     #pragma hdrstop
  16 #endif
  17
  18 #if wxUSE_RIBBON
  19
  20 #include "wx/ribbon/buttonbar.h"
  21 #include "wx/ribbon/art.h"
  22 #include "wx/dcbuffer.h"
  23
  24 #ifndef WX_PRECOMP
  25 #endif
  26
  27 #ifdef __WXMSW__
  28 #include "wx/msw/private.h"
  29 #endif
  30
  31 wxDEFINE_EVENT(wxEVT_COMMAND_RIBBONBUTTON_CLICKED, wxRibbonButtonBarEvent);
  32 wxDEFINE_EVENT(wxEVT_COMMAND_RIBBONBUTTON_DROPDOWN_CLICKED, wxRibbonButtonBarEvent);
  33
  34 IMPLEMENT_DYNAMIC_CLASS(wxRibbonButtonBarEvent, wxCommandEvent)
  35 IMPLEMENT_CLASS(wxRibbonButtonBar, wxRibbonControl)
  36
  37 BEGIN_EVENT_TABLE(wxRibbonButtonBar, wxRibbonControl)
  38     EVT_ERASE_BACKGROUND(wxRibbonButtonBar::OnEraseBackground)
  39     EVT_ENTER_WINDOW(wxRibbonButtonBar::OnMouseEnter)
  40     EVT_LEAVE_WINDOW(wxRibbonButtonBar::OnMouseLeave)
  41     EVT_MOTION(wxRibbonButtonBar::OnMouseMove)
  42     EVT_PAINT(wxRibbonButtonBar::OnPaint)
  43     EVT_SIZE(wxRibbonButtonBar::OnSize)
  44     EVT_LEFT_DOWN(wxRibbonButtonBar::OnMouseDown)
  45     EVT_LEFT_UP(wxRibbonButtonBar::OnMouseUp)
  46 END_EVENT_TABLE()
  47
  48 class wxRibbonButtonBarButtonSizeInfo
  49 {
  50 public:
  51     bool is_supported;
  52     wxSize size;
  53     wxRect normal_region;
  54     wxRect dropdown_region;
  55 };
  56
  57 class wxRibbonButtonBarButtonInstance
  58 {
  59 public:
  60     wxPoint position;
  61     wxRibbonButtonBarButtonBase* base;
  62     wxRibbonButtonBarButtonState size;
  63 };
  64
  65 class wxRibbonButtonBarButtonBase
  66 {
  67 public:
  68     wxRibbonButtonBarButtonInstance NewInstance()
  69     {
  70         wxRibbonButtonBarButtonInstance i;
  71         i.base = this;
  72         return i;
  73     }
  74
  75     wxRibbonButtonBarButtonState GetLargestSize()
  76     {
  77         if(sizes[wxRIBBON_BUTTONBAR_BUTTON_LARGE].is_supported)
  78             return wxRIBBON_BUTTONBAR_BUTTON_LARGE;
  79         if(sizes[wxRIBBON_BUTTONBAR_BUTTON_MEDIUM].is_supported)
  80             return wxRIBBON_BUTTONBAR_BUTTON_MEDIUM;
  81         wxASSERT(sizes[wxRIBBON_BUTTONBAR_BUTTON_SMALL].is_supported);
  82         return wxRIBBON_BUTTONBAR_BUTTON_SMALL;
  83     }
  84
  85     bool GetSmallerSize(
  86         wxRibbonButtonBarButtonState* size, int n = 1)
  87     {
  88         for(; n > 0; --n)
  89         {
  90             switch(*size)
  91             {
  92             case wxRIBBON_BUTTONBAR_BUTTON_LARGE:
  93                 if(sizes[wxRIBBON_BUTTONBAR_BUTTON_MEDIUM].is_supported)
  94                 {
  95                     *size = wxRIBBON_BUTTONBAR_BUTTON_MEDIUM;
  96                     break;
  97                 }
  98             case wxRIBBON_BUTTONBAR_BUTTON_MEDIUM:
  99                 if(sizes[wxRIBBON_BUTTONBAR_BUTTON_SMALL].is_supported)
 100                 {
 101                     *size = wxRIBBON_BUTTONBAR_BUTTON_SMALL;
 102                     break;
 103                 }
 104             case wxRIBBON_BUTTONBAR_BUTTON_SMALL:
 105             default:
 106                 return false;
 107             }
 108         }
 109         return true;
 110     }
 111
 112     wxString label;
 113     wxString help_string;
 114     wxBitmap bitmap_large;
 115     wxBitmap bitmap_large_disabled;
 116     wxBitmap bitmap_small;
 117     wxBitmap bitmap_small_disabled;
 118     wxRibbonButtonBarButtonSizeInfo sizes[3];
 119     wxObject* client_data;
 120     int id;
 121     wxRibbonButtonKind kind;
 122     long state;
 123 };
 124
 125 WX_DECLARE_OBJARRAY(wxRibbonButtonBarButtonInstance, wxArrayRibbonButtonBarButtonInstance);
 126 #include "wx/arrimpl.cpp"
 127 WX_DEFINE_OBJARRAY(wxArrayRibbonButtonBarButtonInstance)
 128
 129 class wxRibbonButtonBarLayout
 130 {
 131 public:
 132     wxSize overall_size;
 133     wxArrayRibbonButtonBarButtonInstance buttons;
 134
 135     void CalculateOverallSize()
 136     {
 137         overall_size = wxSize(0, 0);
 138         size_t btn_count = buttons.Count();
 139         size_t btn_i;
 140         for(btn_i = 0; btn_i < btn_count; ++btn_i)
 141         {
 142             wxRibbonButtonBarButtonInstance& instance = buttons.Item(btn_i);
 143             wxSize size = instance.base->sizes[instance.size].size;
 144             int right = instance.position.x + size.GetWidth();
 145             int bottom = instance.position.y + size.GetHeight();
 146             if(right > overall_size.GetWidth())
 147             {
 148                 overall_size.SetWidth(right);
 149             }
 150             if(bottom > overall_size.GetHeight())
 151             {
 152                 overall_size.SetHeight(bottom);
 153             }
 154         }
 155     }
 156
 157     wxRibbonButtonBarButtonInstance* FindSimilarInstance(
 158         wxRibbonButtonBarButtonInstance* inst)
 159     {
 160         if(inst == NULL)
 161         {
 162             return NULL;
 163         }
 164         size_t btn_count = buttons.Count();
 165         size_t btn_i;
 166         for(btn_i = 0; btn_i < btn_count; ++btn_i)
 167         {
 168             wxRibbonButtonBarButtonInstance& instance = buttons.Item(btn_i);
 169             if(instance.base == inst->base)
 170             {
 171                 return &instance;
 172             }
 173         }
 174         return NULL;
 175     }
 176 };
 177
 178 wxRibbonButtonBar::wxRibbonButtonBar()
 179 {
 180     m_layouts_valid = false;
 181     CommonInit (0);
 182 }
 183
 184 wxRibbonButtonBar::wxRibbonButtonBar(wxWindow* parent,
 185                   wxWindowID id,
 186                   const wxPoint& pos,
 187                   const wxSize& size,
 188                   long style)
 189     : wxRibbonControl(parent, id, pos, size, wxBORDER_NONE)
 190 {
 191     m_layouts_valid = false;
 192
 193     CommonInit(style);
 194 }
 195
 196 wxRibbonButtonBar::~wxRibbonButtonBar()
 197 {
 198     size_t count = m_buttons.GetCount();
 199     size_t i;
 200     for(i = 0; i < count; ++i)
 201     {
 202         wxRibbonButtonBarButtonBase* button = m_buttons.Item(i);
 203         delete button;
 204     }
 205     m_buttons.Clear();
 206
 207     count = m_layouts.GetCount();
 208     for(i = 0; i < count; ++i)
 209     {
 210         wxRibbonButtonBarLayout* layout = m_layouts.Item(i);
 211         delete layout;
 212     }
 213     m_layouts.Clear();
 214 }
 215
 216 bool wxRibbonButtonBar::Create(wxWindow* parent,
 217                 wxWindowID id,
 218                 const wxPoint& pos,
 219                 const wxSize& size,
 220                 long style)
 221 {
 222     if(!wxRibbonControl::Create(parent, id, pos, size, wxBORDER_NONE))
 223     {
 224         return false;
 225     }
 226
 227     CommonInit(style);
 228     return true;
 229 }
 230
 231 wxRibbonButtonBarButtonBase* wxRibbonButtonBar::AddButton(
 232                 int button_id,
 233                 const wxString& label,
 234                 const wxBitmap& bitmap,
 235                 const wxString& help_string,
 236                 wxRibbonButtonKind kind)
 237 {
 238     return AddButton(button_id, label, bitmap, wxNullBitmap, wxNullBitmap,
 239         wxNullBitmap, kind, help_string);
 240 }
 241
 242 wxRibbonButtonBarButtonBase* wxRibbonButtonBar::AddDropdownButton(
 243                 int button_id,
 244                 const wxString& label,
 245                 const wxBitmap& bitmap,
 246                 const wxString& help_string)
 247 {
 248     return AddButton(button_id, label, bitmap, help_string,
 249         wxRIBBON_BUTTON_DROPDOWN);
 250 }
 251
 252 wxRibbonButtonBarButtonBase* wxRibbonButtonBar::AddHybridButton(
 253                 int button_id,
 254                 const wxString& label,
 255                 const wxBitmap& bitmap,
 256                 const wxString& help_string)
 257 {
 258     return AddButton(button_id, label, bitmap, help_string,
 259         wxRIBBON_BUTTON_HYBRID);
 260 }
 261
 262 wxRibbonButtonBarButtonBase* wxRibbonButtonBar::AddButton(
 263                 int button_id,
 264                 const wxString& label,
 265                 const wxBitmap& bitmap,
 266                 const wxBitmap& bitmap_small,
 267                 const wxBitmap& bitmap_disabled,
 268                 const wxBitmap& bitmap_small_disabled,
 269                 wxRibbonButtonKind kind,
 270                 const wxString& help_string,
 271                 wxObject* client_data)
 272 {
 273     wxASSERT(bitmap.IsOk() || bitmap_small.IsOk());
 274     if(m_buttons.IsEmpty())
 275     {
 276         if(bitmap.IsOk())
 277         {
 278             m_bitmap_size_large = bitmap.GetSize();
 279             if(!bitmap_small.IsOk())
 280             {
 281                 m_bitmap_size_small = m_bitmap_size_large;
 282                 m_bitmap_size_small *= 0.5;
 283             }
 284         }
 285         if(bitmap_small.IsOk())
 286         {
 287             m_bitmap_size_small = bitmap_small.GetSize();
 288             if(!bitmap.IsOk())
 289             {
 290                 m_bitmap_size_large = m_bitmap_size_small;
 291                 m_bitmap_size_large *= 2.0;
 292             }
 293         }
 294     }
 295
 296     wxRibbonButtonBarButtonBase* base = new wxRibbonButtonBarButtonBase;
 297     base->id = button_id;
 298     base->label = label;
 299     base->bitmap_large = bitmap;
 300     if(!base->bitmap_large.IsOk())
 301     {
 302         base->bitmap_large = MakeResizedBitmap(base->bitmap_small,
 303             m_bitmap_size_large);
 304     }
 305     else if(base->bitmap_large.GetSize() != m_bitmap_size_large)
 306     {
 307         base->bitmap_large = MakeResizedBitmap(base->bitmap_large,
 308             m_bitmap_size_large);
 309     }
 310     base->bitmap_small = bitmap_small;
 311     if(!base->bitmap_small.IsOk())
 312     {
 313         base->bitmap_small = MakeResizedBitmap(base->bitmap_large,
 314             m_bitmap_size_small);
 315     }
 316     else if(base->bitmap_small.GetSize() != m_bitmap_size_small)
 317     {
 318         base->bitmap_small = MakeResizedBitmap(base->bitmap_small,
 319             m_bitmap_size_small);
 320     }
 321     base->bitmap_large_disabled = bitmap_disabled;
 322     if(!base->bitmap_large_disabled.IsOk())
 323     {
 324         base->bitmap_large_disabled = MakeDisabledBitmap(base->bitmap_large);
 325     }
 326     base->bitmap_small_disabled = bitmap_small_disabled;
 327     if(!base->bitmap_small_disabled.IsOk())
 328     {
 329         base->bitmap_small_disabled = MakeDisabledBitmap(base->bitmap_small);
 330     }
 331     base->kind = kind;
 332     base->help_string = help_string;
 333     base->client_data = client_data;
 334     base->state = 0;
 335
 336     wxClientDC temp_dc(this);
 337     FetchButtonSizeInfo(base, wxRIBBON_BUTTONBAR_BUTTON_SMALL, temp_dc);
 338     FetchButtonSizeInfo(base, wxRIBBON_BUTTONBAR_BUTTON_MEDIUM, temp_dc);
 339     FetchButtonSizeInfo(base, wxRIBBON_BUTTONBAR_BUTTON_LARGE, temp_dc);
 340
 341     // TODO
 342     m_buttons.Add(base);
 343     m_layouts_valid = false;
 344     return base;
 345 }
 346
 347 void wxRibbonButtonBar::FetchButtonSizeInfo(wxRibbonButtonBarButtonBase* button,
 348         wxRibbonButtonBarButtonState size, wxDC& dc)
 349 {
 350     wxRibbonButtonBarButtonSizeInfo& info = button->sizes[size];
 351     if(m_art)
 352     {
 353         info.is_supported = m_art->GetButtonBarButtonSize(dc, this,
 354             button->kind, size, button->label, m_bitmap_size_large,
 355             m_bitmap_size_small, &info.size, &info.normal_region,
 356             &info.dropdown_region);
 357     }
 358     else
 359         info.is_supported = false;
 360 }
 361
 362 wxBitmap wxRibbonButtonBar::MakeResizedBitmap(const wxBitmap& original, wxSize size)
 363 {
 364     wxImage img(original.ConvertToImage());
 365     img.Rescale(size.GetWidth(), size.GetHeight(), wxIMAGE_QUALITY_HIGH);
 366     return wxBitmap(img);
 367 }
 368
 369 wxBitmap wxRibbonButtonBar::MakeDisabledBitmap(const wxBitmap& original)
 370 {
 371     wxImage img(original.ConvertToImage());
 372     return wxBitmap(img.ConvertToGreyscale());
 373 }
 374
 375 bool wxRibbonButtonBar::Realize()
 376 {
 377     if(!m_layouts_valid)
 378     {
 379         MakeLayouts();
 380         m_layouts_valid = true;
 381     }
 382     return true;
 383 }
 384
 385 void wxRibbonButtonBar::ClearButtons()
 386 {
 387     m_layouts_valid = false;
 388     size_t count = m_buttons.GetCount();
 389     size_t i;
 390     for(i = 0; i < count; ++i)
 391     {
 392         wxRibbonButtonBarButtonBase* button = m_buttons.Item(i);
 393         delete button;
 394     }
 395     m_buttons.Clear();
 396     Realize();
 397 }
 398
 399 bool wxRibbonButtonBar::DeleteButton(int button_id)
 400 {
 401     size_t count = m_buttons.GetCount();
 402     size_t i;
 403     for(i = 0; i < count; ++i)
 404     {
 405         wxRibbonButtonBarButtonBase* button = m_buttons.Item(i);
 406         if(button->id == button_id)
 407         {
 408             m_layouts_valid = false;
 409             m_buttons.RemoveAt(i);
 410             Realize();
 411             Refresh();
 412             return true;
 413         }
 414     }
 415     return false;
 416 }
 417
 418 void wxRibbonButtonBar::EnableButton(int button_id, bool enable)
 419 {
 420     size_t count = m_buttons.GetCount();
 421     size_t i;
 422     for(i = 0; i < count; ++i)
 423     {
 424         wxRibbonButtonBarButtonBase* button = m_buttons.Item(i);
 425         if(button->id == button_id)
 426         {
 427             if(enable)
 428             {
 429                 if(button->state & wxRIBBON_BUTTONBAR_BUTTON_DISABLED)
 430                 {
 431                     button->state &= ~wxRIBBON_BUTTONBAR_BUTTON_DISABLED;
 432                     Refresh();
 433                 }
 434             }
 435             else
 436             {
 437                 if((button->state & wxRIBBON_BUTTONBAR_BUTTON_DISABLED) == 0)
 438                 {
 439                     button->state |= wxRIBBON_BUTTONBAR_BUTTON_DISABLED;
 440                     Refresh();
 441                 }
 442             }
 443             return;
 444         }
 445     }
 446 }
 447
 448 void wxRibbonButtonBar::SetArtProvider(wxRibbonArtProvider* art)
 449 {
 450     if(art == m_art)
 451     {
 452         return;
 453     }
 454
 455     wxRibbonControl::SetArtProvider(art);
 456
 457     wxClientDC temp_dc(this);
 458     size_t btn_count = m_buttons.Count();
 459     size_t btn_i;
 460     for(btn_i = 0; btn_i < btn_count; ++btn_i)
 461     {
 462         wxRibbonButtonBarButtonBase* base = m_buttons.Item(btn_i);
 463
 464         FetchButtonSizeInfo(base, wxRIBBON_BUTTONBAR_BUTTON_SMALL, temp_dc);
 465         FetchButtonSizeInfo(base, wxRIBBON_BUTTONBAR_BUTTON_MEDIUM, temp_dc);
 466         FetchButtonSizeInfo(base, wxRIBBON_BUTTONBAR_BUTTON_LARGE, temp_dc);
 467     }
 468
 469     m_layouts_valid = false;
 470     Realize();
 471 }
 472
 473 bool wxRibbonButtonBar::IsSizingContinuous() const
 474 {
 475     return false;
 476 }
 477
 478 wxSize wxRibbonButtonBar::DoGetNextSmallerSize(wxOrientation direction,
 479                                              wxSize result) const
 480 {
 481     size_t nlayouts = m_layouts.GetCount();
 482     size_t i;
 483     for(i = 0; i < nlayouts; ++i)
 484     {
 485         wxRibbonButtonBarLayout* layout = m_layouts.Item(i);
 486         wxSize size = layout->overall_size;
 487         switch(direction)
 488         {
 489         case wxHORIZONTAL:
 490             if(size.x < result.x && size.y <= result.y)
 491             {
 492                 result.x = size.x;
 493                 break;
 494             }
 495             else
 496                 continue;
 497         case wxVERTICAL:
 498             if(size.x <= result.x && size.y < result.y)
 499             {
 500                 result.y = size.y;
 501                 break;
 502             }
 503             else
 504                 continue;
 505         case wxBOTH:
 506             if(size.x < result.x && size.y < result.y)
 507             {
 508                 result = size;
 509                 break;
 510             }
 511             else
 512                 continue;
 513         }
 514         break;
 515     }
 516     return result;
 517 }
 518
 519 wxSize wxRibbonButtonBar::DoGetNextLargerSize(wxOrientation direction,
 520                                             wxSize result) const
 521 {
 522     size_t nlayouts = m_layouts.GetCount();
 523     size_t i = nlayouts;
 524     while(i > 0)
 525     {
 526         --i;
 527         wxRibbonButtonBarLayout* layout = m_layouts.Item(i);
 528         wxSize size = layout->overall_size;
 529         switch(direction)
 530         {
 531         case wxHORIZONTAL:
 532             if(size.x > result.x && size.y <= result.y)
 533             {
 534                 result.x = size.x;
 535                 break;
 536             }
 537             else
 538                 continue;
 539         case wxVERTICAL:
 540             if(size.x <= result.x && size.y > result.y)
 541             {
 542                 result.y = size.y;
 543                 break;
 544             }
 545             else
 546                 continue;
 547         case wxBOTH:
 548             if(size.x > result.x && size.y > result.y)
 549             {
 550                 result = size;
 551                 break;
 552             }
 553             else
 554                 continue;
 555         }
 556         break;
 557     }
 558     return result;
 559 }
 560
 561 void wxRibbonButtonBar::OnEraseBackground(wxEraseEvent& WXUNUSED(evt))
 562 {
 563     // All painting done in main paint handler to minimise flicker
 564 }
 565
 566 void wxRibbonButtonBar::OnPaint(wxPaintEvent& WXUNUSED(evt))
 567 {
 568     wxAutoBufferedPaintDC dc(this);
 569     m_art->DrawButtonBarBackground(dc, this, GetSize());
 570
 571     wxRibbonButtonBarLayout* layout = m_layouts.Item(m_current_layout);
 572
 573     size_t btn_count = layout->buttons.Count();
 574     size_t btn_i;
 575     for(btn_i = 0; btn_i < btn_count; ++btn_i)
 576     {
 577         wxRibbonButtonBarButtonInstance& button = layout->buttons.Item(btn_i);
 578         wxRibbonButtonBarButtonBase* base = button.base;
 579
 580         wxBitmap* bitmap = &base->bitmap_large;
 581         wxBitmap* bitmap_small = &base->bitmap_small;
 582         if(base->state & wxRIBBON_BUTTONBAR_BUTTON_DISABLED)
 583         {
 584             bitmap = &base->bitmap_large_disabled;
 585             bitmap_small = &base->bitmap_small_disabled;
 586         }
 587         wxRect rect(button.position + m_layout_offset, base->sizes[button.size].size);
 588
 589         m_art->DrawButtonBarButton(dc, this, rect, base->kind,
 590             base->state | button.size, base->label, *bitmap, *bitmap_small);
 591     }
 592 }
 593
 594 void wxRibbonButtonBar::OnSize(wxSizeEvent& evt)
 595 {
 596     wxSize new_size = evt.GetSize();
 597     size_t layout_count = m_layouts.GetCount();
 598     size_t layout_i;
 599     m_current_layout = layout_count - 1;
 600     for(layout_i = 0; layout_i < layout_count; ++layout_i)
 601     {
 602         wxSize layout_size = m_layouts.Item(layout_i)->overall_size;
 603         if(layout_size.x <= new_size.x && layout_size.y <= new_size.y)
 604         {
 605             m_layout_offset.x = (new_size.x - layout_size.x) / 2;
 606             m_layout_offset.y = (new_size.y - layout_size.y) / 2;
 607             m_current_layout = layout_i;
 608             break;
 609         }
 610     }
 611     m_hovered_button = m_layouts.Item(m_current_layout)->FindSimilarInstance(m_hovered_button);
 612     Refresh();
 613 }
 614
 615 void wxRibbonButtonBar::CommonInit(long WXUNUSED(style))
 616 {
 617     m_bitmap_size_large = wxSize(32, 32);
 618     m_bitmap_size_small = wxSize(16, 16);
 619
 620     wxRibbonButtonBarLayout* placeholder_layout = new wxRibbonButtonBarLayout;
 621     placeholder_layout->overall_size = wxSize(20, 20);
 622     m_layouts.Add(placeholder_layout);
 623     m_current_layout = 0;
 624     m_layout_offset = wxPoint(0, 0);
 625     m_hovered_button = NULL;
 626     m_active_button = NULL;
 627     m_lock_active_state = false;
 628
 629     SetBackgroundStyle(wxBG_STYLE_CUSTOM);
 630 }
 631
 632 wxSize wxRibbonButtonBar::GetMinSize() const
 633 {
 634     return m_layouts.Last()->overall_size;
 635 }
 636
 637 wxSize wxRibbonButtonBar::DoGetBestSize() const
 638 {
 639     return m_layouts.Item(0)->overall_size;
 640 }
 641
 642 void wxRibbonButtonBar::MakeLayouts()
 643 {
 644     if(m_layouts_valid || m_art == NULL)
 645     {
 646         return;
 647     }
 648     {
 649         // Clear existing layouts
 650         if(m_hovered_button)
 651         {
 652             m_hovered_button->base->state &= ~wxRIBBON_BUTTONBAR_BUTTON_HOVER_MASK;
 653             m_hovered_button = NULL;
 654         }
 655         if(m_active_button)
 656         {
 657             m_active_button->base->state &= ~wxRIBBON_BUTTONBAR_BUTTON_ACTIVE_MASK;
 658             m_active_button = NULL;
 659         }
 660         size_t count = m_layouts.GetCount();
 661         size_t i;
 662         for(i = 0; i < count; ++i)
 663         {
 664             wxRibbonButtonBarLayout* layout = m_layouts.Item(i);
 665             delete layout;
 666         }
 667         m_layouts.Clear();
 668     }
 669     size_t btn_count = m_buttons.Count();
 670     size_t btn_i;
 671     {
 672         // Best layout : all buttons large, stacking horizontally
 673         wxRibbonButtonBarLayout* layout = new wxRibbonButtonBarLayout;
 674         wxPoint cursor(0, 0);
 675         layout->overall_size.SetHeight(0);
 676         for(btn_i = 0; btn_i < btn_count; ++btn_i)
 677         {
 678             wxRibbonButtonBarButtonBase* button = m_buttons.Item(btn_i);
 679             wxRibbonButtonBarButtonInstance instance = button->NewInstance();
 680             instance.position = cursor;
 681             instance.size = button->GetLargestSize();
 682             wxSize& size = button->sizes[instance.size].size;
 683             cursor.x += size.GetWidth();
 684             layout->overall_size.SetHeight(wxMax(layout->overall_size.GetHeight(),
 685                 size.GetHeight()));
 686             layout->buttons.Add(instance);
 687         }
 688         layout->overall_size.SetWidth(cursor.x);
 689         m_layouts.Add(layout);
 690     }
 691     if(btn_count >= 2)
 692     {
 693         // Collapse the rightmost buttons and stack them vertically
 694         size_t iLast = btn_count - 1;
 695         while(TryCollapseLayout(m_layouts.Last(), iLast, &iLast) && iLast > 0)
 696         {
 697             --iLast;
 698         }
 699     }
 700 }
 701
 702 bool wxRibbonButtonBar::TryCollapseLayout(wxRibbonButtonBarLayout* original,
 703                                           size_t first_btn, size_t* last_button)
 704 {
 705     size_t btn_count = m_buttons.Count();
 706     size_t btn_i;
 707     int used_height = 0;
 708     int used_width = 0;
 709     int available_width = 0;
 710     int available_height = 0;
 711
 712     for(btn_i = first_btn + 1; btn_i > 0; /* decrement is inside loop */)
 713     {
 714         --btn_i;
 715         wxRibbonButtonBarButtonBase* button = m_buttons.Item(btn_i);
 716         wxRibbonButtonBarButtonState large_size_class = button->GetLargestSize();
 717         wxSize large_size = button->sizes[large_size_class].size;
 718         int t_available_height = wxMax(available_height,
 719             large_size.GetHeight());
 720         int t_available_width = available_width + large_size.GetWidth();
 721         wxRibbonButtonBarButtonState small_size_class = large_size_class;
 722         if(!button->GetSmallerSize(&small_size_class))
 723         {
 724             return false;
 725         }
 726         wxSize small_size = button->sizes[small_size_class].size;
 727         int t_used_height = used_height + small_size.GetHeight();
 728         int t_used_width = wxMax(used_width, small_size.GetWidth());
 729
 730         if(t_used_height > t_available_height)
 731         {
 732             ++btn_i;
 733             break;
 734         }
 735         else
 736         {
 737             used_height = t_used_height;
 738             used_width = t_used_width;
 739             available_width = t_available_width;
 740             available_height = t_available_height;
 741         }
 742     }
 743
 744     if(btn_i >= first_btn || used_width >= available_width)
 745     {
 746         return false;
 747     }
 748     if(last_button != NULL)
 749     {
 750         *last_button = btn_i;
 751     }
 752
 753     wxRibbonButtonBarLayout* layout = new wxRibbonButtonBarLayout;
 754     WX_APPEND_ARRAY(layout->buttons, original->buttons);
 755     wxPoint cursor(layout->buttons.Item(btn_i).position);
 756     bool preserve_height = false;
 757     if(btn_i == 0)
 758     {
 759         // If height isn't preserved (i.e. it is reduced), then the minimum
 760         // size for the button bar will decrease, preventing the original
 761         // layout from being used (in some cases).
 762         // It may be a good idea to always preverse the height, but for now
 763         // it is only done when the first button is involved in a collapse.
 764         preserve_height = true;
 765     }
 766
 767     for(; btn_i <= first_btn; ++btn_i)
 768     {
 769         wxRibbonButtonBarButtonInstance& instance = layout->buttons.Item(btn_i);
 770         instance.base->GetSmallerSize(&instance.size);
 771         instance.position = cursor;
 772         cursor.y += instance.base->sizes[instance.size].size.GetHeight();
 773     }
 774
 775     int x_adjust = available_width - used_width;
 776
 777     for(; btn_i < btn_count; ++btn_i)
 778     {
 779         wxRibbonButtonBarButtonInstance& instance = layout->buttons.Item(btn_i);
 780         instance.position.x -= x_adjust;
 781     }
 782
 783     layout->CalculateOverallSize();
 784
 785     // Sanity check
 786     if(layout->overall_size.GetWidth() >= original->overall_size.GetWidth() ||
 787         layout->overall_size.GetHeight() > original->overall_size.GetHeight())
 788     {
 789         delete layout;
 790         wxFAIL_MSG("Layout collapse resulted in increased size");
 791         return false;
 792     }
 793
 794     if(preserve_height)
 795     {
 796         layout->overall_size.SetHeight(original->overall_size.GetHeight());
 797     }
 798
 799     m_layouts.Add(layout);
 800     return true;
 801 }
 802
 803 void wxRibbonButtonBar::OnMouseMove(wxMouseEvent& evt)
 804 {
 805     wxPoint cursor(evt.GetPosition());
 806     wxRibbonButtonBarButtonInstance* new_hovered = NULL;
 807     long new_hovered_state = 0;
 808
 809     wxRibbonButtonBarLayout* layout = m_layouts.Item(m_current_layout);
 810     size_t btn_count = layout->buttons.Count();
 811     size_t btn_i;
 812     for(btn_i = 0; btn_i < btn_count; ++btn_i)
 813     {
 814         wxRibbonButtonBarButtonInstance& instance = layout->buttons.Item(btn_i);
 815         wxRibbonButtonBarButtonSizeInfo& size = instance.base->sizes[instance.size];
 816         wxRect btn_rect;
 817         btn_rect.SetTopLeft(m_layout_offset + instance.position);
 818         btn_rect.SetSize(size.size);
 819         if(btn_rect.Contains(cursor))
 820         {
 821             new_hovered = &instance;
 822             new_hovered_state = instance.base->state;
 823             new_hovered_state &= ~wxRIBBON_BUTTONBAR_BUTTON_HOVER_MASK;
 824             wxPoint offset(cursor);
 825             offset -= btn_rect.GetTopLeft();
 826             if(size.normal_region.Contains(offset))
 827             {
 828                 new_hovered_state |= wxRIBBON_BUTTONBAR_BUTTON_NORMAL_HOVERED;
 829             }
 830             if(size.dropdown_region.Contains(offset))
 831             {
 832                 new_hovered_state |= wxRIBBON_BUTTONBAR_BUTTON_DROPDOWN_HOVERED;
 833             }
 834             break;
 835         }
 836     }
 837
 838     if(new_hovered != m_hovered_button || (m_hovered_button != NULL &&
 839         new_hovered_state != m_hovered_button->base->state))
 840     {
 841         if(m_hovered_button != NULL)
 842         {
 843             m_hovered_button->base->state &= ~wxRIBBON_BUTTONBAR_BUTTON_HOVER_MASK;
 844         }
 845         m_hovered_button = new_hovered;
 846         if(m_hovered_button != NULL)
 847         {
 848             m_hovered_button->base->state = new_hovered_state;
 849         }
 850         Refresh(false);
 851     }
 852
 853     if(m_active_button && !m_lock_active_state)
 854     {
 855         long new_active_state = m_active_button->base->state;
 856         new_active_state &= ~wxRIBBON_BUTTONBAR_BUTTON_ACTIVE_MASK;
 857         wxRibbonButtonBarButtonSizeInfo& size =
 858             m_active_button->base->sizes[m_active_button->size];
 859         wxRect btn_rect;
 860         btn_rect.SetTopLeft(m_layout_offset + m_active_button->position);
 861         btn_rect.SetSize(size.size);
 862         if(btn_rect.Contains(cursor))
 863         {
 864             wxPoint offset(cursor);
 865             offset -= btn_rect.GetTopLeft();
 866             if(size.normal_region.Contains(offset))
 867             {
 868                 new_active_state |= wxRIBBON_BUTTONBAR_BUTTON_NORMAL_ACTIVE;
 869             }
 870             if(size.dropdown_region.Contains(offset))
 871             {
 872                 new_active_state |= wxRIBBON_BUTTONBAR_BUTTON_DROPDOWN_ACTIVE;
 873             }
 874         }
 875         if(new_active_state != m_active_button->base->state)
 876         {
 877             m_active_button->base->state = new_active_state;
 878             Refresh(false);
 879         }
 880     }
 881 }
 882
 883 void wxRibbonButtonBar::OnMouseDown(wxMouseEvent& evt)
 884 {
 885     wxPoint cursor(evt.GetPosition());
 886     m_active_button = NULL;
 887
 888     wxRibbonButtonBarLayout* layout = m_layouts.Item(m_current_layout);
 889     size_t btn_count = layout->buttons.Count();
 890     size_t btn_i;
 891     for(btn_i = 0; btn_i < btn_count; ++btn_i)
 892     {
 893         wxRibbonButtonBarButtonInstance& instance = layout->buttons.Item(btn_i);
 894         wxRibbonButtonBarButtonSizeInfo& size = instance.base->sizes[instance.size];
 895         wxRect btn_rect;
 896         btn_rect.SetTopLeft(m_layout_offset + instance.position);
 897         btn_rect.SetSize(size.size);
 898         if(btn_rect.Contains(cursor))
 899         {
 900             m_active_button = &instance;
 901             cursor -= btn_rect.GetTopLeft();
 902             long state = 0;
 903             if(size.normal_region.Contains(cursor))
 904                 state = wxRIBBON_BUTTONBAR_BUTTON_NORMAL_ACTIVE;
 905             else if(size.dropdown_region.Contains(cursor))
 906                 state = wxRIBBON_BUTTONBAR_BUTTON_DROPDOWN_ACTIVE;
 907             instance.base->state |= state;
 908             Refresh(false);
 909             break;
 910         }
 911     }
 912 }
 913
 914 void wxRibbonButtonBar::OnMouseUp(wxMouseEvent& evt)
 915 {
 916     wxPoint cursor(evt.GetPosition());
 917
 918     if(m_active_button)
 919     {
 920         wxRibbonButtonBarButtonSizeInfo& size =
 921             m_active_button->base->sizes[m_active_button->size];
 922         wxRect btn_rect;
 923         btn_rect.SetTopLeft(m_layout_offset + m_active_button->position);
 924         btn_rect.SetSize(size.size);
 925         if(btn_rect.Contains(cursor))
 926         {
 927             int id = m_active_button->base->id;
 928             cursor -= btn_rect.GetTopLeft();
 929             wxEventType event_type;
 930             do
 931             {
 932                 if(size.normal_region.Contains(cursor))
 933                     event_type = wxEVT_COMMAND_RIBBONBUTTON_CLICKED;
 934                 else if(size.dropdown_region.Contains(cursor))
 935                     event_type = wxEVT_COMMAND_RIBBONBUTTON_DROPDOWN_CLICKED;
 936                 else
 937                     break;
 938                 wxRibbonButtonBarEvent notification(event_type, id);
 939                 notification.SetEventObject(this);
 940                 notification.SetBar(this);
 941                 m_lock_active_state = true;
 942                 ProcessWindowEvent(notification);
 943                 m_lock_active_state = false;
 944             } while(false);
 945             if(m_active_button) // may have been NULLed by event handler
 946             {
 947                 m_active_button->base->state &= ~wxRIBBON_BUTTONBAR_BUTTON_ACTIVE_MASK;
 948                 m_active_button = NULL;
 949             }
 950             Refresh(false);
 951         }
 952     }
 953 }
 954
 955 void wxRibbonButtonBar::OnMouseEnter(wxMouseEvent& evt)
 956 {
 957     if(m_active_button && !evt.LeftIsDown())
 958     {
 959         m_active_button = NULL;
 960     }
 961 }
 962
 963 void wxRibbonButtonBar::OnMouseLeave(wxMouseEvent& WXUNUSED(evt))
 964 {
 965     bool repaint = false;
 966     if(m_hovered_button != NULL)
 967     {
 968         m_hovered_button->base->state &= ~wxRIBBON_BUTTONBAR_BUTTON_HOVER_MASK;
 969         m_hovered_button = NULL;
 970         repaint = true;
 971     }
 972     if(m_active_button != NULL && !m_lock_active_state)
 973     {
 974         m_active_button->base->state &= ~wxRIBBON_BUTTONBAR_BUTTON_ACTIVE_MASK;
 975         repaint = true;
 976     }
 977     if(repaint)
 978         Refresh(false);
 979 }
 980
 981 bool wxRibbonButtonBarEvent::PopupMenu(wxMenu* menu)
 982 {
 983     wxPoint pos = wxDefaultPosition;
 984     if(m_bar->m_active_button)
 985     {
 986         wxRibbonButtonBarButtonSizeInfo& size =
 987             m_bar->m_active_button->base->sizes[m_bar->m_active_button->size];
 988         wxRect btn_rect;
 989         btn_rect.SetTopLeft(m_bar->m_layout_offset +
 990             m_bar->m_active_button->position);
 991         btn_rect.SetSize(size.size);
 992         pos = btn_rect.GetBottomLeft();
 993         pos.y++;
 994     }
 995     return m_bar->PopupMenu(menu, pos);
 996 }
 997
 998 #endif // wxUSE_RIBBON