include/wx/sizer.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        sizer.h
   3 // Purpose:     provide wxSizer class for layout
   4 // Author:      Robert Roebling and Robin Dunn
   5 // Modified by: Ron Lee
   6 // Created:
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Robin Dunn, Robert Roebling
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef __WXSIZER_H__
  13 #define __WXSIZER_H__
  14
  15 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  16 #pragma interface "sizer.h"
  17 #endif
  18
  19 #include "wx/defs.h"
  20
  21 #include "wx/window.h"
  22 #include "wx/frame.h"
  23 #include "wx/dialog.h"
  24 #include "wx/bookctrl.h"
  25
  26 //---------------------------------------------------------------------------
  27 // classes
  28 //---------------------------------------------------------------------------
  29
  30 class WXDLLEXPORT wxSizerItem;
  31 class WXDLLEXPORT wxSizer;
  32 class WXDLLEXPORT wxBoxSizer;
  33
  34 //---------------------------------------------------------------------------
  35 // wxSizerItem
  36 //---------------------------------------------------------------------------
  37
  38 class WXDLLEXPORT wxSizerItem: public wxObject
  39 {
  40 public:
  41     // spacer
  42     wxSizerItem( int width,
  43                  int height,
  44                  int proportion,
  45                  int flag,
  46                  int border,
  47                  wxObject* userData);
  48
  49     // window
  50     wxSizerItem( wxWindow *window,
  51                  int proportion,
  52                  int flag,
  53                  int border,
  54                  wxObject* userData );
  55
  56     // subsizer
  57     wxSizerItem( wxSizer *sizer,
  58                  int proportion,
  59                  int flag,
  60                  int border,
  61                  wxObject* userData );
  62
  63     wxSizerItem();
  64     virtual ~wxSizerItem();
  65
  66     virtual void DeleteWindows();
  67
  68     // Enable deleting the SizerItem without destroying the contained sizer.
  69     void DetachSizer()
  70         { m_sizer = 0; }
  71
  72     virtual wxSize GetSize() const;
  73     virtual wxSize CalcMin();
  74     virtual void SetDimension( wxPoint pos, wxSize size );
  75
  76     wxSize GetMinSize() const
  77         { return m_minSize; }
  78     wxSize GetMinSizeWithBorder() const;
  79
  80     void SetMinSize(const wxSize& size)
  81         {
  82             if (IsWindow()) m_window->SetMinSize(size);
  83             m_minSize = size;
  84         }
  85     void SetMinSize( int x, int y )
  86         { SetMinSize(wxSize(x, y)); }
  87     void SetInitSize( int x, int y )
  88         { SetMinSize(wxSize(x, y)); }
  89
  90     void SetRatio( int width, int height )
  91         // if either of dimensions is zero, ratio is assumed to be 1
  92         // to avoid "divide by zero" errors
  93         { m_ratio = (width && height) ? ((float) width / (float) height) : 1; }
  94     void SetRatio( wxSize size )
  95         { m_ratio = (size.x && size.y) ? ((float) size.x / (float) size.y) : 1; }
  96     void SetRatio( float ratio )
  97         { m_ratio = ratio; }
  98     float GetRatio() const
  99         { return m_ratio; }
 100
 101     bool IsWindow() const;
 102     bool IsSizer() const;
 103     bool IsSpacer() const;
 104
 105     // Deprecated in 2.6, use {G,S}etProportion instead.
 106     wxDEPRECATED( void SetOption( int option ) );
 107     wxDEPRECATED( int GetOption() const );
 108
 109     void SetProportion( int proportion )
 110         { m_proportion = proportion; }
 111     int GetProportion() const
 112         { return m_proportion; }
 113     void SetFlag( int flag )
 114         { m_flag = flag; }
 115     int GetFlag() const
 116         { return m_flag; }
 117     void SetBorder( int border )
 118         { m_border = border; }
 119     int GetBorder() const
 120         { return m_border; }
 121
 122     wxWindow *GetWindow() const
 123         { return m_window; }
 124     void SetWindow( wxWindow *window )
 125         { m_window = window; m_minSize = window->GetSize(); }
 126     wxSizer *GetSizer() const
 127         { return m_sizer; }
 128     void SetSizer( wxSizer *sizer )
 129         { m_sizer = sizer; }
 130     const wxSize &GetSpacer() const
 131         { return m_size; }
 132     void SetSpacer( const wxSize &size )
 133         { m_size = size; m_minSize = size; }
 134
 135     void Show ( bool show );
 136     bool IsShown() const
 137         { return m_show; }
 138
 139     wxObject* GetUserData() const
 140         { return m_userData; }
 141     wxPoint GetPosition() const
 142         { return m_pos; }
 143
 144 protected:
 145     wxWindow    *m_window;
 146     wxSizer     *m_sizer;
 147     wxSize       m_size;
 148     wxPoint      m_pos;
 149     wxSize       m_minSize;
 150     int          m_proportion;
 151     int          m_border;
 152     int          m_flag;
 153
 154     // If true, then this item is considered in the layout
 155     // calculation.  Otherwise, it is skipped over.
 156     bool         m_show;
 157
 158     // Aspect ratio can always be calculated from m_size,
 159     // but this would cause precision loss when the window
 160     // is shrunk.  It is safer to preserve the initial value.
 161     float        m_ratio;
 162
 163     wxObject    *m_userData;
 164
 165 private:
 166     DECLARE_CLASS(wxSizerItem)
 167     DECLARE_NO_COPY_CLASS(wxSizerItem)
 168 };
 169
 170 WX_DECLARE_EXPORTED_LIST( wxSizerItem, wxSizerItemList );
 171
 172
 173 //---------------------------------------------------------------------------
 174 // wxSizer
 175 //---------------------------------------------------------------------------
 176
 177 class WXDLLEXPORT wxSizer: public wxObject, public wxClientDataContainer
 178 {
 179 public:
 180     wxSizer();
 181     ~wxSizer();
 182
 183     // methods for adding elements to the sizer: there are Add/Insert/Prepend
 184     // overloads for each of window/sizer/spacer/wxSizerItem
 185     void Add( wxWindow *window,
 186               int proportion = 0,
 187               int flag = 0,
 188               int border = 0,
 189               wxObject* userData = NULL );
 190     void Add( wxSizer *sizer,
 191               int proportion = 0,
 192               int flag = 0,
 193               int border = 0,
 194               wxObject* userData = NULL );
 195     void Add( int width,
 196               int height,
 197               int proportion = 0,
 198               int flag = 0,
 199               int border = 0,
 200               wxObject* userData = NULL );
 201     void Add( wxSizerItem *item );
 202
 203     void AddSpacer(int size);
 204     void AddStretchSpacer(int prop = 1);
 205
 206     void Insert( size_t index,
 207                  wxWindow *window,
 208                  int proportion = 0,
 209                  int flag = 0,
 210                  int border = 0,
 211                  wxObject* userData = NULL );
 212     void Insert( size_t index,
 213                  wxSizer *sizer,
 214                  int proportion = 0,
 215                  int flag = 0,
 216                  int border = 0,
 217                  wxObject* userData = NULL );
 218     void Insert( size_t index,
 219                  int width,
 220                  int height,
 221                  int proportion = 0,
 222                  int flag = 0,
 223                  int border = 0,
 224                  wxObject* userData = NULL );
 225     virtual void Insert( size_t index, wxSizerItem *item );
 226
 227     void InsertSpacer(size_t index, int size);
 228     void InsertStretchSpacer(size_t index, int prop = 1);
 229
 230     void Prepend( wxWindow *window,
 231                   int proportion = 0,
 232                   int flag = 0,
 233                   int border = 0,
 234                   wxObject* userData = NULL );
 235     void Prepend( wxSizer *sizer,
 236                   int proportion = 0,
 237                   int flag = 0,
 238                   int border = 0,
 239                   wxObject* userData = NULL );
 240     void Prepend( int width,
 241                   int height,
 242                   int proportion = 0,
 243                   int flag = 0,
 244                   int border = 0,
 245                   wxObject* userData = NULL );
 246     void Prepend( wxSizerItem *item );
 247
 248     void PrependSpacer(int size);
 249     void PrependStretchSpacer(int prop = 1);
 250
 251     // Deprecated in 2.6 since historically it does not delete the window,
 252     // use Detach instead.
 253     wxDEPRECATED( virtual bool Remove( wxWindow *window ) );
 254     virtual bool Remove( wxSizer *sizer );
 255     virtual bool Remove( int index );
 256
 257     virtual bool Detach( wxWindow *window );
 258     virtual bool Detach( wxSizer *sizer );
 259     virtual bool Detach( int index );
 260
 261     virtual void Clear( bool delete_windows = false );
 262     virtual void DeleteWindows();
 263
 264     void SetMinSize( int width, int height )
 265         { DoSetMinSize( width, height ); }
 266     void SetMinSize( wxSize size )
 267         { DoSetMinSize( size.x, size.y ); }
 268
 269     /* Searches recursively */
 270     bool SetItemMinSize( wxWindow *window, int width, int height )
 271         { return DoSetItemMinSize( window, width, height ); }
 272     bool SetItemMinSize( wxWindow *window, wxSize size )
 273         { return DoSetItemMinSize( window, size.x, size.y ); }
 274
 275     /* Searches recursively */
 276     bool SetItemMinSize( wxSizer *sizer, int width, int height )
 277         { return DoSetItemMinSize( sizer, width, height ); }
 278     bool SetItemMinSize( wxSizer *sizer, wxSize size )
 279         { return DoSetItemMinSize( sizer, size.x, size.y ); }
 280
 281     bool SetItemMinSize( size_t index, int width, int height )
 282         { return DoSetItemMinSize( index, width, height ); }
 283     bool SetItemMinSize( size_t index, wxSize size )
 284         { return DoSetItemMinSize( index, size.x, size.y ); }
 285
 286     wxSize GetSize() const
 287         { return m_size; }
 288     wxPoint GetPosition() const
 289         { return m_position; }
 290
 291     /* Calculate the minimal size or return m_minSize if bigger. */
 292     wxSize GetMinSize();
 293
 294     virtual void RecalcSizes() = 0;
 295     virtual wxSize CalcMin() = 0;
 296
 297     virtual void Layout();
 298
 299     wxSize Fit( wxWindow *window );
 300     void FitInside( wxWindow *window );
 301     void SetSizeHints( wxWindow *window );
 302     void SetVirtualSizeHints( wxWindow *window );
 303
 304     wxSizerItemList& GetChildren()
 305         { return m_children; }
 306
 307     void SetDimension( int x, int y, int width, int height );
 308
 309     // Manage whether individual scene items are considered
 310     // in the layout calculations or not.
 311     bool Show( wxWindow *window, bool show = true, bool recursive = false );
 312     bool Show( wxSizer *sizer, bool show = true, bool recursive = false );
 313     bool Show( size_t index, bool show = true );
 314
 315     bool Hide( wxSizer *sizer, bool recursive = false )
 316         { return Show( sizer, false, recursive ); }
 317     bool Hide( wxWindow *window, bool recursive = false )
 318         { return Show( window, false, recursive ); }
 319     bool Hide( size_t index )
 320         { return Show( index, false ); }
 321
 322     bool IsShown( wxWindow *window ) const;
 323     bool IsShown( wxSizer *sizer ) const;
 324     bool IsShown( size_t index ) const;
 325
 326     // Recursively call wxWindow::Show () on all sizer items.
 327     virtual void ShowItems (bool show);
 328
 329 protected:
 330     wxSize              m_size;
 331     wxSize              m_minSize;
 332     wxPoint             m_position;
 333     wxSizerItemList     m_children;
 334
 335     wxSize GetMaxWindowSize( wxWindow *window ) const;
 336     wxSize GetMinWindowSize( wxWindow *window );
 337     wxSize GetMaxClientSize( wxWindow *window ) const;
 338     wxSize GetMinClientSize( wxWindow *window );
 339     wxSize FitSize( wxWindow *window );
 340     wxSize VirtualFitSize( wxWindow *window );
 341
 342     virtual void DoSetMinSize( int width, int height );
 343     virtual bool DoSetItemMinSize( wxWindow *window, int width, int height );
 344     virtual bool DoSetItemMinSize( wxSizer *sizer, int width, int height );
 345     virtual bool DoSetItemMinSize( size_t index, int width, int height );
 346
 347 private:
 348     DECLARE_CLASS(wxSizer)
 349 };
 350
 351 //---------------------------------------------------------------------------
 352 // wxGridSizer
 353 //---------------------------------------------------------------------------
 354
 355 class WXDLLEXPORT wxGridSizer: public wxSizer
 356 {
 357 public:
 358     wxGridSizer( int rows, int cols, int vgap, int hgap );
 359     wxGridSizer( int cols, int vgap = 0, int hgap = 0 );
 360
 361     virtual void RecalcSizes();
 362     virtual wxSize CalcMin();
 363
 364     void SetCols( int cols )    { m_cols = cols; }
 365     void SetRows( int rows )    { m_rows = rows; }
 366     void SetVGap( int gap )     { m_vgap = gap; }
 367     void SetHGap( int gap )     { m_hgap = gap; }
 368     int GetCols() const         { return m_cols; }
 369     int GetRows() const         { return m_rows; }
 370     int GetVGap() const         { return m_vgap; }
 371     int GetHGap() const         { return m_hgap; }
 372
 373 protected:
 374     int    m_rows;
 375     int    m_cols;
 376     int    m_vgap;
 377     int    m_hgap;
 378
 379     // return the number of total items and the number of columns and rows
 380     int CalcRowsCols(int& rows, int& cols) const;
 381
 382     void SetItemBounds( wxSizerItem *item, int x, int y, int w, int h );
 383
 384 private:
 385     DECLARE_CLASS(wxGridSizer)
 386 };
 387
 388 //---------------------------------------------------------------------------
 389 // wxFlexGridSizer
 390 //---------------------------------------------------------------------------
 391
 392 // the bevaiour for resizing wxFlexGridSizer cells in the "non-flexible"
 393 // direction
 394 enum wxFlexSizerGrowMode
 395 {
 396     // don't resize the cells in non-flexible direction at all
 397     wxFLEX_GROWMODE_NONE,
 398
 399     // uniformly resize only the specified ones (default)
 400     wxFLEX_GROWMODE_SPECIFIED,
 401
 402     // uniformly resize all cells
 403     wxFLEX_GROWMODE_ALL
 404 };
 405
 406 class WXDLLEXPORT wxFlexGridSizer: public wxGridSizer
 407 {
 408 public:
 409     // ctors/dtor
 410     wxFlexGridSizer( int rows, int cols, int vgap, int hgap );
 411     wxFlexGridSizer( int cols, int vgap = 0, int hgap = 0 );
 412     virtual ~wxFlexGridSizer();
 413
 414
 415     // set the rows/columns which will grow (the others will remain of the
 416     // constant initial size)
 417     void AddGrowableRow( size_t idx, int proportion = 0 );
 418     void RemoveGrowableRow( size_t idx );
 419     void AddGrowableCol( size_t idx, int proportion = 0 );
 420     void RemoveGrowableCol( size_t idx );
 421
 422
 423     // the sizer cells may grow in both directions, not grow at all or only
 424     // grow in one direction but not the other
 425
 426     // the direction may be wxVERTICAL, wxHORIZONTAL or wxBOTH (default)
 427     void SetFlexibleDirection(int direction) { m_flexDirection = direction; }
 428     int GetFlexibleDirection() const { return m_flexDirection; }
 429
 430     // note that the grow mode only applies to the direction which is not
 431     // flexible
 432     void SetNonFlexibleGrowMode(wxFlexSizerGrowMode mode) { m_growMode = mode; }
 433     wxFlexSizerGrowMode GetNonFlexibleGrowMode() const { return m_growMode; }
 434
 435     // Read-only access to the row heights and col widths arrays
 436     const wxArrayInt& GetRowHeights() const { return m_rowHeights; }
 437     const wxArrayInt& GetColWidths() const  { return m_colWidths; }
 438
 439     // implementation
 440     virtual void RecalcSizes();
 441     virtual wxSize CalcMin();
 442
 443 protected:
 444     void AdjustForFlexDirection();
 445     void AdjustForGrowables(const wxSize& sz, const wxSize& minsz,
 446                             int nrows, int ncols);
 447
 448     // the heights/widths of all rows/columns
 449     wxArrayInt  m_rowHeights,
 450                 m_colWidths;
 451
 452     // indices of the growable columns and rows
 453     wxArrayInt  m_growableRows,
 454                 m_growableCols;
 455
 456     // proportion values of the corresponding growable rows and columns
 457     wxArrayInt  m_growableRowsProportions,
 458                 m_growableColsProportions;
 459
 460     // parameters describing whether the growable cells should be resized in
 461     // both directions or only one
 462     int m_flexDirection;
 463     wxFlexSizerGrowMode m_growMode;
 464
 465     // saves CalcMin result to optimize RecalcSizes
 466     wxSize m_calculatedMinSize;
 467
 468 private:
 469     DECLARE_CLASS(wxFlexGridSizer)
 470     DECLARE_NO_COPY_CLASS(wxFlexGridSizer)
 471 };
 472
 473 //---------------------------------------------------------------------------
 474 // wxBoxSizer
 475 //---------------------------------------------------------------------------
 476
 477 class WXDLLEXPORT wxBoxSizer: public wxSizer
 478 {
 479 public:
 480     wxBoxSizer( int orient );
 481
 482     void RecalcSizes();
 483     wxSize CalcMin();
 484
 485     int GetOrientation() const
 486         { return m_orient; }
 487
 488     void SetOrientation(int orient)
 489         { m_orient = orient; }
 490
 491 protected:
 492     int m_orient;
 493     int m_stretchable;
 494     int m_minWidth;
 495     int m_minHeight;
 496     int m_fixedWidth;
 497     int m_fixedHeight;
 498
 499 private:
 500     DECLARE_CLASS(wxBoxSizer)
 501 };
 502
 503 //---------------------------------------------------------------------------
 504 // wxStaticBoxSizer
 505 //---------------------------------------------------------------------------
 506
 507 #if wxUSE_STATBOX
 508
 509 class WXDLLEXPORT wxStaticBox;
 510
 511 class WXDLLEXPORT wxStaticBoxSizer: public wxBoxSizer
 512 {
 513 public:
 514     wxStaticBoxSizer( wxStaticBox *box, int orient );
 515
 516     void RecalcSizes();
 517     wxSize CalcMin();
 518
 519     wxStaticBox *GetStaticBox() const
 520         { return m_staticBox; }
 521
 522     // override to hide/show the static box as well
 523     virtual void ShowItems (bool show);
 524
 525 protected:
 526     wxStaticBox   *m_staticBox;
 527
 528 private:
 529     DECLARE_CLASS(wxStaticBoxSizer)
 530     DECLARE_NO_COPY_CLASS(wxStaticBoxSizer)
 531 };
 532
 533 #endif // wxUSE_STATBOX
 534
 535
 536 #if WXWIN_COMPATIBILITY_2_4
 537 // NB: wxBookCtrlSizer and wxNotebookSizer are deprecated, they
 538 //     don't do anything. wxBookCtrl::DoGetBestSize does the job now.
 539
 540 // ----------------------------------------------------------------------------
 541 // wxBookCtrlSizer
 542 // ----------------------------------------------------------------------------
 543
 544 #if wxUSE_BOOKCTRL
 545
 546 // this sizer works with wxNotebook/wxListbook/wxChoicebook... and sizes the control to
 547 // fit its pages
 548 class WXDLLEXPORT wxBookCtrl;
 549
 550 class WXDLLEXPORT wxBookCtrlSizer : public wxSizer
 551 {
 552 public:
 553     wxDEPRECATED( wxBookCtrlSizer(wxBookCtrl *bookctrl) );
 554
 555     wxBookCtrl *GetControl() const { return m_bookctrl; }
 556
 557     virtual void RecalcSizes();
 558     virtual wxSize CalcMin();
 559
 560 protected:
 561     // this protected ctor lets us mark the real one above as deprecated
 562     // and still have warning-free build of the library itself:
 563     wxBookCtrlSizer() {}
 564
 565     wxBookCtrl *m_bookctrl;
 566
 567 private:
 568     DECLARE_CLASS(wxBookCtrlSizer)
 569     DECLARE_NO_COPY_CLASS(wxBookCtrlSizer)
 570 };
 571
 572
 573 #if wxUSE_NOTEBOOK
 574
 575 // before wxBookCtrl we only had wxNotebookSizer, keep it for backwards
 576 // compatibility
 577 class WXDLLEXPORT wxNotebook;
 578
 579 class WXDLLEXPORT wxNotebookSizer : public wxBookCtrlSizer
 580 {
 581 public:
 582     wxDEPRECATED( wxNotebookSizer(wxNotebook *nb) );
 583
 584     wxNotebook *GetNotebook() const { return (wxNotebook *)m_bookctrl; }
 585
 586 private:
 587     DECLARE_CLASS(wxNotebookSizer)
 588     DECLARE_NO_COPY_CLASS(wxNotebookSizer)
 589 };
 590
 591 #endif // wxUSE_NOTEBOOK
 592
 593 #endif // wxUSE_BOOKCTRL
 594
 595 #endif // WXWIN_COMPATIBILITY_2_4
 596
 597
 598 #endif // __WXSIZER_H__
 599