contrib/src/foldbar/foldpanelbar.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        foldpanelbar.cpp
   3 // Purpose:
   4 // Author:      Jorgen Bodde
   5 // Modified by:
   6 // Created:     22/06/2004
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Jorgen Bodde
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // For compilers that support precompilation, includes "wx/wx.h".
  13 #include "wx/wxprec.h"
  14
  15 #ifdef __BORLANDC__
  16     #pragma hdrstop
  17 #endif
  18
  19 #include "wx/foldbar/foldpanelbar.h"
  20 #include "icon_collapsed.xpm"
  21 #include "icon_expanded.xpm"
  22 #include "icon_theresmore.xpm"
  23
  24 //----------------------------------------------------------------------------
  25 // wxFoldPanelBar
  26 //----------------------------------------------------------------------------
  27
  28 IMPLEMENT_CLASS( wxFoldPanelBar, wxPanel )
  29
  30 BEGIN_EVENT_TABLE(wxFoldPanelBar,wxPanel)
  31     EVT_SIZE(wxFoldPanelBar::OnSizePanel)
  32     //EVT_PAINT(wxFoldPanelBar::OnPaint)
  33     EVT_CAPTIONBAR(wxID_ANY, wxFoldPanelBar::OnPressCaption)
  34 END_EVENT_TABLE()
  35
  36 wxFoldPanelBar::wxFoldPanelBar()
  37 {
  38
  39 }
  40
  41 wxFoldPanelBar::wxFoldPanelBar( wxWindow *parent, wxWindowID id, const wxPoint &position,
  42                                 const wxSize& size, long style, long extraStyle)
  43     : _foldPanel(0)
  44     , _bottomPanel(0)
  45     , _controlCreated(false)
  46 {
  47     Create( parent, id, position, size, style, extraStyle);
  48 }
  49
  50 void wxFoldPanelBar::Create( wxWindow *parent, wxWindowID id, const wxPoint &position,
  51                              const wxSize& size, long style, long extraStyle )
  52 {
  53
  54     _extraStyle = extraStyle;
  55
  56     // create the panel (duh!). This causes a size event, which we are going
  57     // to skip when we are not initialised
  58
  59     wxPanel::Create(parent, id, position, size, style);
  60
  61     // the fold panel area
  62
  63     _foldPanel = new wxPanel(this, wxID_ANY, wxDefaultPosition, wxDefaultSize, wxNO_BORDER|wxTAB_TRAVERSAL);
  64
  65     // the extra area for some icons / context menu etc
  66
  67 #if 0
  68     _bottomPanel = new wxPanel(this, wxID_ANY, wxDefaultPosition, wxSize(wxDefaultCoord,22), wxNO_BORDER|wxTAB_TRAVERSAL);
  69     _bottomPanel->SetBackgroundColour(*wxWHITE);
  70 #endif
  71
  72     // create the fold icons to be used in the captions
  73
  74     _images = new wxImageList(16, 16);
  75
  76     wxBitmap *bmp = new wxBitmap(icon_expanded);
  77     _images->Add(*bmp);
  78     delete bmp;
  79
  80     bmp = new wxBitmap(icon_collapsed);
  81     _images->Add(*bmp);
  82     delete bmp;
  83
  84     _moreBmp = new wxBitmap(icon_theresmore);
  85
  86     // do this as last, to check if create is already called
  87
  88     _controlCreated = true;
  89 }
  90
  91 wxFoldPanelBar::~wxFoldPanelBar()
  92 {
  93     delete _images;
  94     delete _moreBmp;
  95 }
  96
  97 wxFoldPanel wxFoldPanelBar::AddFoldPanel(const wxString &caption, bool collapsedInitially, const wxCaptionBarStyle &style)
  98 {
  99     wxASSERT(_controlCreated);
 100
 101     // create a fold panel item, which is first only the caption.
 102     // the user can now add a panel area which will be folded in
 103     // when pressed.
 104
 105     wxFoldPanelItem *item = new wxFoldPanelItem(_foldPanel, caption, _images, collapsedInitially, style);
 106
 107     // look at the last added one and reposition this one
 108     int y = 0;
 109     if(_panels.GetCount() > 0)
 110         y = _panels.Last()->GetY() + _panels.Last()->GetPanelHeight();
 111
 112     item->Reposition(y);
 113     _panels.Add(item);
 114
 115     //return wxFoldPanel(item);
 116     return wxFoldPanel(item);
 117 }
 118
 119 int wxFoldPanelBar::AddFoldPanelWindow(const wxFoldPanel &panel, wxWindow *window, int flags, int ySpacing, int leftSpacing,
 120                                        int rightSpacing)
 121 {
 122     wxCHECK(panel.IsOk(), -1);
 123     panel.GetItem()->AddWindow(window, flags, ySpacing, leftSpacing, rightSpacing);
 124
 125     // TODO: Take old and new height, and if difference, reposition all the lower panels
 126     // this is because the user can add new wxWindow controls somewhere in between
 127     // when other panels are already present.
 128
 129     return 0;
 130 }
 131
 132 int wxFoldPanelBar::AddFoldPanelSeperator(const wxFoldPanel &panel, const wxColour &color, int ySpacing, int leftSpacing,
 133                                           int rightSpacing)
 134 {
 135     wxCHECK(panel.IsOk(), -1);
 136     panel.GetItem()->AddSeparator(color, ySpacing, leftSpacing, rightSpacing);
 137
 138     return 0;
 139 }
 140
 141 void wxFoldPanelBar::OnSizePanel(wxSizeEvent &event)
 142 {
 143     // skip all stuff when we are not initialised yet
 144
 145     if(!_controlCreated)
 146     {
 147         event.Skip();
 148         return;
 149     }
 150
 151     // now size the fold panel area and the
 152     // lower bar in such a way that the bar is always
 153     // visible
 154
 155     wxRect foldrect = GetRect();
 156
 157     // fold panel itself. If too little space,
 158     // don't show it
 159
 160 #if 0
 161     if(foldrect.GetHeight() < 23)
 162         foldrect.SetHeight(0);
 163     else
 164         foldrect.SetHeight(foldrect.GetHeight() - 22);
 165 #endif
 166
 167     foldrect.SetX(0);
 168     foldrect.SetY(0);
 169     _foldPanel->SetSize(foldrect);
 170
 171     if(_extraStyle & wxFPB_COLLAPSE_TO_BOTTOM)
 172     {
 173         wxRect rect = RepositionCollapsedToBottom();
 174         if(rect.GetHeight() > 0)
 175             RefreshRect(rect);
 176     }
 177
 178     // TODO: A smart way to check wether the old - new width of the
 179     // panel changed, if so no need to resize the fold panel items
 180
 181     RedisplayFoldPanelItems();
 182
 183     // tool panel for icons and other stuff
 184
 185 #if 0
 186     wxRect bottomrect = GetRect();
 187     if(bottomrect.GetHeight() < 22)
 188         bottomrect.SetY(0);
 189     else
 190         bottomrect.SetY(bottomrect.GetHeight() - 22);
 191
 192     bottomrect.SetHeight(22);
 193     bottomrect.SetX(0);
 194     _bottomPanel->SetSize(bottomrect);
 195
 196     // TODO: redraw the bitmap properly
 197     // use the captionbar algorithm for that
 198
 199     _bottomPanel->Refresh();
 200 #endif
 201 }
 202
 203 void wxFoldPanelBar::OnPaint(wxPaintEvent &event)
 204 {
 205     if(!_controlCreated)
 206         return;
 207 #if 0
 208     // paint the bottom panel only, where the
 209     // arrow is shown when there is more to show the user
 210     // just as informative icon
 211
 212     wxPaintDC dc(_bottomPanel);
 213
 214     wxSize size = _bottomPanel->GetSize();
 215     int offset = (size.GetHeight() - _moreBmp->GetHeight()) / 2;
 216
 217     dc.DrawBitmap(*_moreBmp, size.GetWidth() - _moreBmp->GetWidth() - 2, offset, true);
 218 #endif
 219
 220     event.Skip();
 221 }
 222
 223 void wxFoldPanelBar::OnPressCaption(wxCaptionBarEvent &event)
 224 {
 225     // act upon the folding or expanding status of the bar
 226     // to expand or collapse the panel(s)
 227
 228     if(event.GetFoldStatus())
 229         Collapse(wxFoldPanel((wxFoldPanelItem *)event.GetTag()));
 230     else
 231         Expand(wxFoldPanel((wxFoldPanelItem *)event.GetTag()));
 232 }
 233
 234 void wxFoldPanelBar::RefreshPanelsFrom(wxFoldPanelItem *item)
 235 {
 236     wxASSERT(item);
 237
 238     size_t i = _panels.Index(item);
 239     if(i != wxNOT_FOUND)
 240         RefreshPanelsFrom(i);
 241 }
 242
 243 void wxFoldPanelBar::RefreshPanelsFrom(size_t i)
 244 {
 245     Freeze();
 246
 247     // if collapse to bottom is on, the panels that are not expanded
 248     // should be drawn at the bottom. All panels that are expanded
 249     // are drawn on top. The last expanded panel gets all the extra space
 250
 251     if(_extraStyle & wxFPB_COLLAPSE_TO_BOTTOM)
 252     {
 253         int offset = 0;
 254
 255         for(size_t j = 0; j < _panels.GetCount(); j++)
 256         {
 257             if(_panels.Item(j)->IsExpanded())
 258                 offset += _panels.Item(j)->Reposition(offset);
 259         }
 260
 261         // put all non collapsed panels at the bottom where there is space, else
 262         // put them right behind the expanded ones
 263
 264         RepositionCollapsedToBottom();
 265     }
 266     else
 267     {
 268         int y = _panels.Item(i)->GetY() + _panels.Item(i)->GetPanelHeight();
 269         for(i++; i < _panels.GetCount(); i++)
 270             y += _panels.Item(i)->Reposition(y);
 271     }
 272     Thaw();
 273 }
 274
 275 void wxFoldPanelBar::RedisplayFoldPanelItems()
 276 {
 277     // resize them all. No need to reposition
 278
 279     wxFoldPanelItem *item;
 280     for(size_t i = 0; i < _panels.GetCount(); i++)
 281     {
 282         item = _panels.Item(i);
 283         wxASSERT(item);
 284
 285         item->ResizePanel();
 286     }
 287 }
 288
 289 wxRect wxFoldPanelBar::RepositionCollapsedToBottom()
 290 {
 291     wxRect value(0,0,0,0);
 292
 293     // determine wether the number of panels left
 294     // times the size of their captions is enough
 295     // to be placed in the left over space
 296
 297     int expanded = 0, collapsed = 0, offset;
 298     GetPanelsHeight(collapsed, expanded);
 299
 300     // if no room stick them behind the normal ones, else
 301     // at the bottom
 302
 303     if((GetSize().GetHeight() - expanded - collapsed) < 0)
 304         offset = expanded;
 305     else
 306     {
 307         // value is the region which is left unpainted
 308         // I will send it back as 'slack' so it does not need to
 309         // be recalulated.
 310
 311         value.SetX(0);
 312         value.SetY(expanded);
 313         value.SetHeight(GetSize().GetHeight() - expanded);
 314         value.SetWidth(GetSize().GetWidth());
 315
 316         offset = GetSize().GetHeight() - collapsed;
 317     }
 318
 319
 320     // go reposition
 321
 322     for(size_t i = 0; i < _panels.GetCount(); i++)
 323     {
 324         if(!_panels.Item(i)->IsExpanded())
 325             offset += _panels.Item(i)->Reposition(offset);
 326     }
 327
 328     return value;
 329 }
 330
 331 int wxFoldPanelBar::GetPanelsHeight(int &collapsed, int &expanded)
 332 {
 333     int value = 0;
 334
 335     // assumed here that all the panels that are expanded
 336     // are positioned after eachother from 0,0 to end.
 337
 338     for(size_t j = 0; j < _panels.GetCount(); j++)
 339     {
 340         int offset = _panels.Item(j)->GetPanelHeight();
 341         value += offset;
 342         if(_panels.Item(j)->IsExpanded())
 343             expanded += offset;
 344         else
 345             collapsed += offset;
 346     }
 347
 348     return value;
 349
 350 }