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 #include "wx/tooltip.h"
  34
  35 #ifndef WX_PRECOMP
  36     #include "wx/textctrl.h"
  37 #endif
  38
  39
  40 // ============================================================================
  41 // implementation
  42 // ============================================================================
  43
  44 IMPLEMENT_ABSTRACT_CLASS(wxPickerBase, wxControl)
  45
  46 // ----------------------------------------------------------------------------
  47 // wxPickerBase
  48 // ----------------------------------------------------------------------------
  49
  50 bool wxPickerBase::CreateBase(wxWindow *parent,
  51                          wxWindowID id,
  52                          const wxString &text,
  53                          const wxPoint& pos,
  54                          const wxSize& size,
  55                          long style,
  56                          const wxValidator& validator,
  57                          const wxString& name)
  58 {
  59     // remove any border style from our style as wxPickerBase's window must be
  60     // invisible (user styles must be set on the textctrl or the platform-dependent picker)
  61     style &= ~wxBORDER_MASK;
  62
  63     if (!wxControl::Create(parent, id, pos, size, style | wxNO_BORDER | wxTAB_TRAVERSAL,
  64                            validator, name))
  65         return false;
  66
  67     SetMinSize( size );
  68
  69     m_sizer = new wxBoxSizer(wxHORIZONTAL);
  70
  71     if (HasFlag(wxPB_USE_TEXTCTRL))
  72     {
  73         // NOTE: the style of this class (wxPickerBase) and the style of the
  74         //       attached text control are different: GetTextCtrlStyle() extracts
  75         //       the styles related to the textctrl from the styles passed here
  76         m_text = new wxTextCtrl(this, wxID_ANY, wxEmptyString,
  77                                 wxDefaultPosition, wxDefaultSize,
  78                                 GetTextCtrlStyle(style));
  79         if (!m_text)
  80         {
  81             wxFAIL_MSG( wxT("wxPickerBase's textctrl creation failed") );
  82             return false;
  83         }
  84
  85         // set the maximum lenght allowed for this textctrl.
  86         // This is very important since any change to it will trigger an update in
  87         // the m_picker; for very long strings, this real-time synchronization could
  88         // become a CPU-blocker and thus should be avoided.
  89         // 32 characters will be more than enough for all common uses.
  90         m_text->SetMaxLength(32);
  91
  92         // set the initial contents of the textctrl
  93         m_text->SetValue(text);
  94
  95         m_text->Connect(m_text->GetId(), wxEVT_COMMAND_TEXT_UPDATED,
  96                 wxCommandEventHandler(wxPickerBase::OnTextCtrlUpdate),
  97                 NULL, this);
  98         m_text->Connect(m_text->GetId(), wxEVT_KILL_FOCUS,
  99                 wxFocusEventHandler(wxPickerBase::OnTextCtrlKillFocus),
 100                 NULL, this);
 101
 102         m_text->Connect(m_text->GetId(), wxEVT_DESTROY,
 103                 wxWindowDestroyEventHandler(wxPickerBase::OnTextCtrlDelete),
 104                 NULL, this);
 105
 106         // the text control's proportion values defaults to 2
 107         m_sizer->Add(m_text, 2, GetDefaultTextCtrlFlag(), 5);
 108     }
 109
 110     return true;
 111 }
 112
 113 void wxPickerBase::PostCreation()
 114 {
 115     // the picker's proportion value defaults to 1 when there's no text control
 116     // associated with it - in that case it defaults to 0
 117     m_sizer->Add(m_picker, HasTextCtrl() ? 0 : 1, GetDefaultPickerCtrlFlag(), 5);
 118
 119     // For aesthetic reasons, make sure the picker is at least as high as the
 120     // associated text control and is always at least square, unless we are
 121     // explicitly using wxPB_SMALL style to force it to take as little space as
 122     // possible.
 123     if ( !HasFlag(wxPB_SMALL) )
 124     {
 125         const wxSize pickerBestSize(m_picker->GetBestSize());
 126         const wxSize textBestSize( HasTextCtrl() ? m_text->GetBestSize() : wxSize());
 127         wxSize pickerMinSize;
 128         pickerMinSize.y = wxMax(pickerBestSize.y, textBestSize.y);
 129         pickerMinSize.x = wxMax(pickerBestSize.x, pickerMinSize.y);
 130         if ( pickerMinSize != pickerBestSize )
 131             m_picker->SetMinSize(pickerMinSize);
 132     }
 133
 134     SetSizer(m_sizer);
 135
 136     SetInitialSize( GetMinSize() );
 137 }
 138
 139 #if wxUSE_TOOLTIPS
 140
 141 void wxPickerBase::DoSetToolTip(wxToolTip *tip)
 142 {
 143     // don't set the tooltip on us but rather on our two child windows
 144     // as otherwise it would appear only when the cursor is placed on the
 145     // small area around the child windows which belong to wxPickerBase
 146     m_picker->SetToolTip(tip);
 147
 148     // do a copy as wxWindow will own the pointer we pass
 149     if ( m_text )
 150         m_text->SetToolTip(tip ? new wxToolTip(tip->GetTip()) : NULL);
 151 }
 152
 153 #endif // wxUSE_TOOLTIPS
 154
 155 // ----------------------------------------------------------------------------
 156 // wxPickerBase - event handlers
 157 // ----------------------------------------------------------------------------
 158
 159 void wxPickerBase::OnTextCtrlKillFocus(wxFocusEvent& event)
 160 {
 161     event.Skip();
 162
 163     // don't leave the textctrl empty
 164     if (m_text && m_text->GetValue().empty())
 165         UpdateTextCtrlFromPicker();
 166 }
 167
 168 void wxPickerBase::OnTextCtrlDelete(wxWindowDestroyEvent &)
 169 {
 170     // the textctrl has been deleted; our pointer is invalid!
 171     m_text = NULL;
 172 }
 173
 174 void wxPickerBase::OnTextCtrlUpdate(wxCommandEvent &)
 175 {
 176     // for each text-change, update the picker
 177     UpdatePickerFromTextCtrl();
 178 }
 179
 180 #endif // Any picker in use