src/msw/headerctrl.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/msw/headerctrl.cpp
   3 // Purpose:     implementation of wxHeaderCtrl for wxMSW
   4 // Author:      Vadim Zeitlin
   5 // Created:     2008-12-01
   6 // RCS-ID:      $Id$
   7 // Copyright:   (c) 2008 Vadim Zeitlin <vadim@wxwidgets.org>
   8 // Licence:     wxWindows licence
   9 ///////////////////////////////////////////////////////////////////////////////
  10
  11 // ============================================================================
  12 // declarations
  13 // ============================================================================
  14
  15 // ----------------------------------------------------------------------------
  16 // headers
  17 // ----------------------------------------------------------------------------
  18
  19 // for compilers that support precompilation, includes "wx.h".
  20 #include "wx/wxprec.h"
  21
  22 #ifdef __BORLANDC__
  23     #pragma hdrstop
  24 #endif
  25
  26 #ifndef WX_PRECOMP
  27     #include "wx/log.h"
  28 #endif // WX_PRECOMP
  29
  30 #include "wx/headerctrl.h"
  31 #include "wx/imaglist.h"
  32
  33 #include "wx/msw/wrapcctl.h"
  34 #include "wx/msw/private.h"
  35
  36 // ============================================================================
  37 // wxHeaderCtrl implementation
  38 // ============================================================================
  39
  40 // ----------------------------------------------------------------------------
  41 // wxHeaderCtrl construction/destruction
  42 // ----------------------------------------------------------------------------
  43
  44 void wxHeaderCtrl::Init()
  45 {
  46     m_imageList = NULL;
  47 }
  48
  49 bool wxHeaderCtrl::Create(wxWindow *parent,
  50                           wxWindowID id,
  51                           const wxPoint& pos,
  52                           const wxSize& size,
  53                           long style,
  54                           const wxString& name)
  55 {
  56     // notice that we don't need InitCommonControlsEx(ICC_LISTVIEW_CLASSES)
  57     // here as we already call InitCommonControls() in wxApp initialization
  58     // code which covers this
  59
  60     if ( !CreateControl(parent, id, pos, size, style, wxDefaultValidator, name) )
  61         return false;
  62
  63     if ( !MSWCreateControl(WC_HEADER, _T(""), pos, size) )
  64         return false;
  65
  66     return true;
  67 }
  68
  69 WXDWORD wxHeaderCtrl::MSWGetStyle(long style, WXDWORD *exstyle) const
  70 {
  71     WXDWORD msStyle = wxControl::MSWGetStyle(style, exstyle);
  72
  73     if ( style & wxHD_DRAGDROP )
  74         msStyle |= HDS_DRAGDROP;
  75
  76     // the control looks nicer with these styles and there doesn't seem to be
  77     // any reason to not use them so we always do (as for HDS_HORZ it is 0
  78     // anyhow but include it for clarity)
  79     msStyle |= HDS_HORZ | HDS_BUTTONS | HDS_FLAT | HDS_FULLDRAG | HDS_HOTTRACK;
  80
  81     return msStyle;
  82 }
  83
  84 wxHeaderCtrl::~wxHeaderCtrl()
  85 {
  86     delete m_imageList;
  87 }
  88
  89 // ----------------------------------------------------------------------------
  90 // wxHeaderCtrl scrolling
  91 // ----------------------------------------------------------------------------
  92
  93 void wxHeaderCtrl::DoScrollHorz(int dx)
  94 {
  95     // as the native control doesn't support offsetting its contents, we use a
  96     // hack here to make it appear correctly when the parent is scrolled:
  97     // instead of scrolling or repainting we simply move the control window
  98     // itself: to be precise, offset it by the scroll increment to the left and
  99     // increment its width to still extend to the right boundary to compensate
 100     // for it (notice that dx is negative when scrolling to the right)
 101     SetSize(GetPosition().x + dx, -1, GetSize().x - dx, -1, wxSIZE_USE_EXISTING);
 102 }
 103
 104 // ----------------------------------------------------------------------------
 105 // wxHeaderCtrl geometry calculation
 106 // ----------------------------------------------------------------------------
 107
 108 wxSize wxHeaderCtrl::DoGetBestSize() const
 109 {
 110     RECT rc = wxGetClientRect(GetHwndOf(GetParent()));
 111     WINDOWPOS wpos;
 112     HDLAYOUT layout = { &rc, &wpos };
 113     if ( !Header_Layout(GetHwnd(), &layout) )
 114     {
 115         wxLogLastError(_T("Header_Layout"));
 116         return wxControl::DoGetBestSize();
 117     }
 118
 119     return wxSize(wpos.cx, wpos.cy);
 120 }
 121
 122 // ----------------------------------------------------------------------------
 123 // wxHeaderCtrl columns managements
 124 // ----------------------------------------------------------------------------
 125
 126 unsigned int wxHeaderCtrl::DoGetCount() const
 127 {
 128     return Header_GetItemCount(GetHwnd());
 129 }
 130
 131 void wxHeaderCtrl::DoInsert(const wxHeaderColumn& col, unsigned int idx)
 132 {
 133     // copy the HDITEM because we may modify it below
 134     HDITEM hdi = col.GetHDI();
 135
 136     const wxBitmap bmp = col.GetBitmap();
 137     if ( bmp.IsOk() )
 138     {
 139         const int bmpWidth = bmp.GetWidth(),
 140                   bmpHeight = bmp.GetHeight();
 141
 142         if ( !m_imageList )
 143         {
 144             m_imageList = new wxImageList(bmpWidth, bmpHeight);
 145             Header_SetImageList(GetHwnd(), GetHimagelistOf(m_imageList));
 146         }
 147         else // already have an image list
 148         {
 149             // check that all bitmaps we use have the same size
 150             int imageWidth,
 151                 imageHeight;
 152             m_imageList->GetSize(0, imageWidth, imageHeight);
 153
 154             wxASSERT_MSG( imageWidth == bmpWidth && imageHeight == bmpHeight,
 155                           "all column bitmaps must have the same size" );
 156         }
 157
 158         m_imageList->Add(bmp);
 159         hdi.mask |= HDI_IMAGE;
 160         hdi.iImage = m_imageList->GetImageCount() - 1;
 161     }
 162
 163     if ( col.IsHidden() )
 164     {
 165         hdi.mask |= HDI_WIDTH;
 166         hdi.cxy = 0;
 167     }
 168
 169     if ( Header_InsertItem(GetHwnd(), idx, &hdi) == -1 )
 170     {
 171         wxLogLastError(_T("Header_InsertItem"));
 172     }
 173 }
 174
 175 void wxHeaderCtrl::DoDelete(unsigned int idx)
 176 {
 177     if ( !Header_DeleteItem(GetHwnd(), idx) )
 178     {
 179         wxLogLastError(_T("Header_DeleteItem"));
 180     }
 181 }
 182
 183 // ----------------------------------------------------------------------------
 184 // wxHeaderCtrl columns attributes
 185 // ----------------------------------------------------------------------------
 186
 187 void wxHeaderCtrl::DoShowColumn(unsigned int idx, bool show)
 188 {
 189     wxHDITEM hdi;
 190     hdi.mask = HDI_WIDTH;
 191
 192     if ( !Header_GetItem(GetHwnd(), idx, &hdi) )
 193     {
 194         wxLogLastError(_T("Header_GetItem(HDI_WIDTH)"));
 195         return;
 196     }
 197
 198     if ( show )
 199         hdi.cxy = 80; // FIXME: we don't have the column width here any more
 200     else
 201         hdi.cxy = 0;
 202
 203     if ( !Header_SetItem(GetHwnd(), idx, &hdi) )
 204     {
 205         wxLogLastError(_T("Header_SetItem(HDI_WIDTH)"));
 206         return;
 207     }
 208 }
 209
 210 void wxHeaderCtrl::DoShowSortIndicator(unsigned int idx, int sortOrder)
 211 {
 212     wxHDITEM hdi;
 213     hdi.mask = HDI_FORMAT;
 214
 215     if ( !Header_GetItem(GetHwnd(), idx, &hdi) )
 216     {
 217         wxLogLastError(_T("Header_GetItem(HDI_FORMAT)"));
 218         return;
 219     }
 220
 221     if ( sortOrder == -1 )
 222         hdi.fmt &= ~(HDF_SORTDOWN | HDF_SORTUP);
 223     else
 224         hdi.fmt |= sortOrder ? HDF_SORTUP : HDF_SORTDOWN;
 225
 226     if ( !Header_SetItem(GetHwnd(), idx, &hdi) )
 227     {
 228         wxLogLastError(_T("Header_SetItem(HDI_FORMAT)"));
 229     }
 230 }
 231