src/common/pickerbase.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/common/pickerbase.cpp
   3 // Purpose:     wxPickerBase class implementation
   4 // Author:      Francesco Montorsi
   5 // Modified by:
   6 // Created:     15/04/2006
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Francesco Montorsi
   9 // Licence:     wxWindows licence
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #if wxUSE_COLOURPICKERCTRL || \
  28     wxUSE_DIRPICKERCTRL    || \
  29     wxUSE_FILEPICKERCTRL   || \
  30     wxUSE_FONTPICKERCTRL
  31
  32 #include "wx/pickerbase.h"
  33
  34 #ifndef WX_PRECOMP
  35     #include "wx/textctrl.h"
  36 #endif
  37
  38 // ============================================================================
  39 // implementation
  40 // ============================================================================
  41
  42 IMPLEMENT_ABSTRACT_CLASS(wxPickerBase, wxWindow)
  43
  44 // ----------------------------------------------------------------------------
  45 // wxPickerBase
  46 // ----------------------------------------------------------------------------
  47
  48 wxPickerBase::~wxPickerBase()
  49 {
  50     // destroy the windows we are managing: these are not automatically
  51     // destroyed by wxWindow because they are not built as our children
  52     // but rather as children of the parent of the wxPickerBase class
  53     // (since wxPickerBase does not represent a real window)
  54     if (m_text) m_text->Destroy();
  55     if (m_picker) m_picker->Destroy();
  56 }
  57
  58 bool wxPickerBase::CreateBase(wxWindow *parent,
  59                          wxWindowID id,
  60                          const wxString &text,
  61                          const wxPoint& pos,
  62                          const wxSize& size,
  63                          long style,
  64                          const wxValidator& validator,
  65                          const wxString& name)
  66 {
  67     // remove any border style from our style as wxPickerBase's window must be
  68     // invisible (user styles must be set on the textctrl or the platform-dependent picker)
  69     style &= ~wxBORDER_MASK;
  70     if (!wxControl::Create(parent, id, pos, size, style | wxNO_BORDER | wxTAB_TRAVERSAL,
  71                             validator, name))
  72         return false;
  73
  74     if (HasFlag(wxPB_USE_TEXTCTRL))
  75     {
  76         // NOTE: the style of this class (wxPickerBase) and the style of the
  77         //       attached text control are different: GetTextCtrlStyle() extracts
  78         //       the styles related to the textctrl from the styles passed here
  79         m_text = new wxTextCtrl(this, wxID_ANY, wxEmptyString, wxPoint(0, 0),
  80                                 wxSize(40, size.GetHeight()), GetTextCtrlStyle(style));
  81         if (!m_text)
  82         {
  83             wxFAIL_MSG( wxT("wxPickerBase's textctrl creation failed") );
  84             return false;
  85         }
  86
  87         // set the maximum lenght allowed for this textctrl.
  88         // This is very important since any change to it will trigger an update in
  89         // the m_picker; for very long strings, this real-time synchronization could
  90         // become a CPU-blocker and thus should be avoided.
  91         // 32 characters will be more than enough for all common uses.
  92         m_text->SetMaxLength(32);
  93
  94         // set the initial contents of the textctrl
  95         m_text->SetValue(text);
  96
  97         m_text->Connect(wxEVT_COMMAND_TEXT_UPDATED,
  98                 wxCommandEventHandler(wxPickerBase::OnTextCtrlUpdate),
  99                 NULL, this);
 100         m_text->Connect(wxEVT_KILL_FOCUS,
 101                 wxFocusEventHandler(wxPickerBase::OnTextCtrlKillFocus),
 102                 NULL, this);
 103
 104         m_text->Connect(wxEVT_DESTROY,
 105                 wxWindowDestroyEventHandler(wxPickerBase::OnTextCtrlDelete),
 106                 NULL, this);
 107     }
 108
 109     return true;
 110 }
 111
 112 void wxPickerBase::OnTextCtrlKillFocus(wxFocusEvent &)
 113 {
 114     wxASSERT(m_text);
 115
 116     // don't leave the textctrl empty
 117     if (m_text->GetValue().empty())
 118         UpdateTextCtrlFromPicker();
 119 }
 120
 121 void wxPickerBase::OnTextCtrlDelete(wxWindowDestroyEvent &)
 122 {
 123     // the textctrl has been deleted; our pointer is invalid!
 124     m_text = NULL;
 125 }
 126
 127 void wxPickerBase::OnTextCtrlUpdate(wxCommandEvent &)
 128 {
 129     // for each text-change, update the picker
 130     UpdatePickerFromTextCtrl();
 131 }
 132
 133 int wxPickerBase::GetTextCtrlWidth(int given)
 134 {
 135     // compute the width of m_text like a wxBoxSizer(wxHORIZONTAL) would do
 136     // NOTE: the proportion of m_picker is fixed to 1
 137     return ((given - m_margin) / (m_textProportion + 1)) * m_textProportion;
 138 }
 139
 140 void wxPickerBase::DoSetSizeHints(int minW, int minH, int maxW, int maxH, int incW, int incH)
 141 {
 142     wxControl::DoSetSizeHints(minW, minH, maxW, maxH, incW, incH);
 143
 144     if (m_text)
 145     {
 146         // compute minWidth and maxWidth of the ausiliary textctrl
 147         int textCtrlMinW = -1, textCtrlMaxW = -1;
 148         if (minW != -1)
 149         {
 150             textCtrlMinW = GetTextCtrlWidth(minW);
 151             minW -= textCtrlMinW + m_margin;
 152         }
 153
 154         if (maxW != -1)
 155         {
 156             textCtrlMaxW = GetTextCtrlWidth(maxW);
 157             maxW -= textCtrlMaxW + m_margin;
 158         }
 159
 160         m_text->SetSizeHints(textCtrlMinW, minH, textCtrlMaxW, maxH, incW, incH);
 161     }
 162
 163     if (m_picker)
 164         m_picker->SetSizeHints(minW, minH, maxW, maxH, incW, incH);
 165 }
 166
 167 void wxPickerBase::DoSetSize(int x, int y, int width, int height, int sizeFlags)
 168 {
 169     wxControl::DoSetSize(x, y, width, height, sizeFlags);
 170
 171     int pickerx = 0;
 172     if (m_text)
 173     {
 174         // compute width of the ausiliary textctrl
 175         int textCtrlW = GetTextCtrlWidth(width);
 176
 177         // set the m_text's position relatively to this window
 178         m_text->SetSize(0, 0, textCtrlW, height, sizeFlags);
 179
 180         // change position of the real picker
 181         pickerx += textCtrlW + m_margin;
 182         width -= textCtrlW + m_margin;
 183     }
 184
 185     if (m_picker)
 186         m_picker->SetSize(pickerx, 0, width, height, sizeFlags);
 187 }
 188
 189 wxSize wxPickerBase::DoGetBestSize() const
 190 {
 191     wxSize ret = m_picker->GetBestSize();
 192
 193     if (m_text)
 194     {
 195         wxSize sz = m_text->GetBestSize();
 196
 197         ret.SetWidth( ret.GetWidth() + sz.GetWidth() + m_margin );
 198         ret.SetHeight( wxMax(ret.GetHeight(), sz.GetHeight()) );
 199     }
 200
 201     return ret;
 202 }
 203
 204 void wxPickerBase::SetInternalMargin(int newmargin)
 205 {
 206     m_margin = newmargin;
 207 }
 208
 209 #endif // Any picker in use