contrib/src/foldbar/foldpanelbar.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        foldpanelbar.cpp
   3 // Purpose:
   4 // Author:      Jorgen Bodde
   5 // Modified by: ABX - 19/12/2004 : possibility of horizontal orientation
   6 //                               : wxWidgets coding standards
   7 // Created:     22/06/2004
   8 // RCS-ID:      $Id$
   9 // Copyright:   (c) Jorgen Bodde
  10 // Licence:     wxWindows licence
  11 /////////////////////////////////////////////////////////////////////////////
  12
  13 // For compilers that support precompilation, includes "wx/wx.h".
  14 #include "wx/wxprec.h"
  15
  16 #ifdef __BORLANDC__
  17     #pragma hdrstop
  18 #endif
  19
  20 #ifndef WX_PRECOMP
  21     #include "wx/wx.h"
  22 #endif
  23
  24 #include "wx/foldbar/foldpanelbar.h"
  25 #include "icon_collapsed.xpm"
  26 #include "icon_expanded.xpm"
  27 #include "icon_theresmore.xpm"
  28
  29 //----------------------------------------------------------------------------
  30 // wxFoldPanelBar
  31 //----------------------------------------------------------------------------
  32
  33 IMPLEMENT_CLASS( wxFoldPanelBar, wxPanel )
  34
  35 BEGIN_EVENT_TABLE(wxFoldPanelBar,wxPanel)
  36     EVT_SIZE(wxFoldPanelBar::OnSizePanel)
  37     //EVT_PAINT(wxFoldPanelBar::OnPaint)
  38     EVT_CAPTIONBAR(wxID_ANY, wxFoldPanelBar::OnPressCaption)
  39 END_EVENT_TABLE()
  40
  41 wxFoldPanelBar::wxFoldPanelBar()
  42 {
  43
  44 }
  45
  46 wxFoldPanelBar::wxFoldPanelBar( wxWindow *parent, wxWindowID id, const wxPoint &position,
  47                                 const wxSize& size, long style, long extraStyle)
  48     : m_foldPanel(NULL)
  49     , m_bottomPanel(NULL)
  50     , m_controlCreated(false)
  51 {
  52     Create( parent, id, position, size, style, extraStyle);
  53 }
  54
  55 void wxFoldPanelBar::Create( wxWindow *parent, wxWindowID id, const wxPoint &position,
  56                              const wxSize& size, long style, long extraStyle )
  57 {
  58
  59     m_extraStyle = extraStyle;
  60
  61     // make sure there is any orientation
  62     if ( ( style & wxFPB_HORIZONTAL ) != wxFPB_HORIZONTAL )
  63         style |= wxFPB_VERTICAL;
  64
  65     // create the panel (duh!). This causes a size event, which we are going
  66     // to skip when we are not initialised
  67
  68     wxPanel::Create(parent, id, position, size, style);
  69
  70     // the fold panel area
  71
  72     m_foldPanel = new wxPanel(this, wxID_ANY, position, size, wxNO_BORDER|wxTAB_TRAVERSAL);
  73
  74     // the extra area for some icons / context menu etc
  75
  76 #if 0
  77     m_bottomPanel = new wxPanel(this, wxID_ANY, wxDefaultPosition, wxSize(wxDefaultCoord,22), wxNO_BORDER|wxTAB_TRAVERSAL);
  78     m_bottomPanel->SetBackgroundColour(*wxWHITE);
  79 #endif
  80
  81     // create the fold icons to be used in the captions
  82
  83     m_images = new wxImageList(16, 16);
  84
  85     wxBitmap *bmp = new wxBitmap(icon_expanded);
  86     m_images->Add(*bmp);
  87     delete bmp;
  88
  89     bmp = new wxBitmap(icon_collapsed);
  90     m_images->Add(*bmp);
  91     delete bmp;
  92
  93     m_moreBmp = new wxBitmap(icon_theresmore);
  94
  95     // do this as last, to check if create is already called
  96
  97     m_controlCreated = true;
  98 }
  99
 100 wxFoldPanelBar::~wxFoldPanelBar()
 101 {
 102     delete m_images;
 103     delete m_moreBmp;
 104 }
 105
 106 wxFoldPanel wxFoldPanelBar::AddFoldPanel(const wxString &caption, bool collapsedInitially, const wxCaptionBarStyle &style)
 107 {
 108     wxASSERT(m_controlCreated);
 109
 110     // create a fold panel item, which is first only the caption.
 111     // the user can now add a panel area which will be folded in
 112     // when pressed.
 113
 114     wxFoldPanelItem *item = new wxFoldPanelItem(m_foldPanel, caption, m_images, collapsedInitially, style);
 115
 116     // look at the last added one and reposition this one
 117     int pos = 0;
 118     if(m_panels.GetCount() > 0)
 119         pos = m_panels.Last()->GetItemPos() + m_panels.Last()->GetPanelLength();
 120
 121     item->Reposition(pos);
 122     m_panels.Add(item);
 123
 124     //return wxFoldPanel(item);
 125     return wxFoldPanel(item);
 126 }
 127
 128 int wxFoldPanelBar::AddFoldPanelWindow(const wxFoldPanel &panel, wxWindow *window, int flags, int ySpacing, int leftSpacing,
 129                                        int rightSpacing)
 130 {
 131     wxCHECK(panel.IsOk(), -1);
 132     panel.GetItem()->AddWindow(window, flags, ySpacing, leftSpacing, rightSpacing);
 133
 134     // TODO: Take old and new height, and if difference, reposition all the lower panels
 135     // this is because the user can add new wxWindow controls somewhere in between
 136     // when other panels are already present.
 137
 138     return 0;
 139 }
 140
 141 int wxFoldPanelBar::AddFoldPanelSeperator(const wxFoldPanel &panel, const wxColour &color, int ySpacing, int leftSpacing,
 142                                           int rightSpacing)
 143 {
 144     wxCHECK(panel.IsOk(), -1);
 145     panel.GetItem()->AddSeparator(color, ySpacing, leftSpacing, rightSpacing);
 146
 147     return 0;
 148 }
 149
 150 void wxFoldPanelBar::OnSizePanel(wxSizeEvent &event)
 151 {
 152     // skip all stuff when we are not initialised yet
 153
 154     if(!m_controlCreated)
 155     {
 156         event.Skip();
 157         return;
 158     }
 159
 160     // now size the fold panel area and the
 161     // lower bar in such a way that the bar is always
 162     // visible
 163
 164     wxRect foldrect = GetRect();
 165
 166     // fold panel itself. If too little space,
 167     // don't show it
 168
 169 #if 0
 170     if(foldrect.GetHeight() < 23)
 171         foldrect.SetHeight(0);
 172     else
 173         foldrect.SetHeight(foldrect.GetHeight() - 22);
 174 #endif
 175
 176     foldrect.SetX(0);
 177     foldrect.SetY(0);
 178     m_foldPanel->SetSize(foldrect);
 179
 180     if(m_extraStyle & wxFPB_COLLAPSE_TO_BOTTOM)
 181     {
 182         wxRect rect = RepositionCollapsedToBottom();
 183         bool vertical = IsVertical();
 184         if((vertical && rect.GetHeight() > 0) || (!vertical && rect.GetWidth() > 0))
 185             RefreshRect(rect);
 186     }
 187
 188     // TODO: A smart way to check wether the old - new width of the
 189     // panel changed, if so no need to resize the fold panel items
 190
 191     RedisplayFoldPanelItems();
 192
 193     // tool panel for icons and other stuff
 194
 195 #if 0
 196     wxRect bottomrect = GetRect();
 197     if(bottomrect.GetHeight() < 22)
 198         bottomrect.SetY(0);
 199     else
 200         bottomrect.SetY(bottomrect.GetHeight() - 22);
 201
 202     bottomrect.SetHeight(22);
 203     bottomrect.SetX(0);
 204     m_bottomPanel->SetSize(bottomrect);
 205
 206     // TODO: redraw the bitmap properly
 207     // use the captionbar algorithm for that
 208
 209     m_bottomPanel->Refresh();
 210 #endif
 211 }
 212
 213 void wxFoldPanelBar::OnPaint(wxPaintEvent &event)
 214 {
 215     if(!m_controlCreated)
 216         return;
 217 #if 0
 218     // paint the bottom panel only, where the
 219     // arrow is shown when there is more to show the user
 220     // just as informative icon
 221
 222     wxPaintDC dc(m_bottomPanel);
 223
 224     wxSize size = m_bottomPanel->GetSize();
 225     int offset = (size.GetHeight() - m_moreBmp->GetHeight()) / 2;
 226
 227     dc.DrawBitmap(*m_moreBmp, size.GetWidth() - m_moreBmp->GetWidth() - 2, offset, true);
 228 #endif
 229
 230     event.Skip();
 231 }
 232
 233 void wxFoldPanelBar::OnPressCaption(wxCaptionBarEvent &event)
 234 {
 235     // act upon the folding or expanding status of the bar
 236     // to expand or collapse the panel(s)
 237
 238     if(event.GetFoldStatus())
 239         Collapse(wxFoldPanel((wxFoldPanelItem *)event.GetTag()));
 240     else
 241         Expand(wxFoldPanel((wxFoldPanelItem *)event.GetTag()));
 242 }
 243
 244 void wxFoldPanelBar::RefreshPanelsFrom(wxFoldPanelItem *item)
 245 {
 246     wxASSERT(item);
 247
 248     int i = m_panels.Index(item);
 249     if(i != wxNOT_FOUND)
 250         RefreshPanelsFrom(i);
 251 }
 252
 253 void wxFoldPanelBar::RefreshPanelsFrom(size_t i)
 254 {
 255     Freeze();
 256
 257     // if collapse to bottom is on, the panels that are not expanded
 258     // should be drawn at the bottom. All panels that are expanded
 259     // are drawn on top. The last expanded panel gets all the extra space
 260
 261     if(m_extraStyle & wxFPB_COLLAPSE_TO_BOTTOM)
 262     {
 263         int offset = 0;
 264
 265         for(size_t j = 0; j < m_panels.GetCount(); j++)
 266         {
 267             if(m_panels.Item(j)->IsExpanded())
 268                 offset += m_panels.Item(j)->Reposition(offset);
 269         }
 270
 271         // put all non collapsed panels at the bottom where there is space, else
 272         // put them right behind the expanded ones
 273
 274         RepositionCollapsedToBottom();
 275     }
 276     else
 277     {
 278         int pos = m_panels.Item(i)->GetItemPos() + m_panels.Item(i)->GetPanelLength();
 279         for(i++; i < m_panels.GetCount(); i++)
 280             pos += m_panels.Item(i)->Reposition(pos);
 281     }
 282     Thaw();
 283 }
 284
 285 void wxFoldPanelBar::RedisplayFoldPanelItems()
 286 {
 287     // resize them all. No need to reposition
 288
 289     wxFoldPanelItem *item;
 290     for(size_t i = 0; i < m_panels.GetCount(); i++)
 291     {
 292         item = m_panels.Item(i);
 293         wxASSERT(item);
 294
 295         item->ResizePanel();
 296     }
 297 }
 298
 299 wxRect wxFoldPanelBar::RepositionCollapsedToBottom()
 300 {
 301     wxRect value(0,0,0,0);
 302     bool vertical = IsVertical();
 303
 304     // determine wether the number of panels left
 305     // times the size of their captions is enough
 306     // to be placed in the left over space
 307
 308     int expanded = 0, collapsed = 0, offset;
 309     GetPanelsLength(collapsed, expanded);
 310
 311     // if no room stick them behind the normal ones, else
 312     // at the bottom
 313
 314     if(((vertical ? GetSize().GetHeight() : GetSize().GetWidth()) - expanded - collapsed) < 0)
 315         offset = expanded;
 316     else
 317     {
 318         // value is the region which is left unpainted
 319         // I will send it back as 'slack' so it does not need to
 320         // be recalulated.
 321
 322         value.SetHeight(GetSize().GetHeight());
 323         value.SetWidth(GetSize().GetWidth());
 324
 325         if(vertical)
 326         {
 327             value.SetY(expanded);
 328             value.SetHeight(value.GetHeight() - expanded);
 329         }
 330         else
 331         {
 332             value.SetX(expanded);
 333             value.SetWidth(value.GetWidth() - expanded);
 334         }
 335
 336         offset = (vertical ? GetSize().GetHeight() : GetSize().GetWidth()) - collapsed;
 337     }
 338
 339     // go reposition
 340
 341     for(size_t i = 0; i < m_panels.GetCount(); i++)
 342     {
 343         if(!m_panels.Item(i)->IsExpanded())
 344             offset += m_panels.Item(i)->Reposition(offset);
 345     }
 346
 347     return value;
 348 }
 349
 350 int wxFoldPanelBar::GetPanelsLength(int &collapsed, int &expanded)
 351 {
 352     int value = 0;
 353
 354     // assumed here that all the panels that are expanded
 355     // are positioned after each other from 0,0 to end.
 356
 357     for(size_t j = 0; j < m_panels.GetCount(); j++)
 358     {
 359         int offset = m_panels.Item(j)->GetPanelLength();
 360         value += offset;
 361         if(m_panels.Item(j)->IsExpanded())
 362             expanded += offset;
 363         else
 364             collapsed += offset;
 365     }
 366
 367     return value;
 368 }