src/generic/clrpickerg.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/generic/clrpickerg.cpp
   3 // Purpose:     wxGenericColourButton class implementation
   4 // Author:      Francesco Montorsi (readapted code written by Vadim Zeitlin)
   5 // Modified by:
   6 // Created:     15/04/2006
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Vadim Zeitlin, 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
  29 #include "wx/clrpicker.h"
  30
  31 #include "wx/colordlg.h"
  32
  33
  34 // ============================================================================
  35 // implementation
  36 // ============================================================================
  37
  38 wxColourData wxGenericColourButton::ms_data;
  39 IMPLEMENT_DYNAMIC_CLASS(wxGenericColourButton, wxButton)
  40
  41 // ----------------------------------------------------------------------------
  42 // wxGenericColourButton
  43 // ----------------------------------------------------------------------------
  44
  45 bool wxGenericColourButton::Create( wxWindow *parent, wxWindowID id,
  46                         const wxColour &col, const wxPoint &pos,
  47                         const wxSize &size, long style,
  48                         const wxValidator& validator, const wxString &name)
  49 {
  50     // create this button
  51     if (!wxButton::Create( parent, id, wxEmptyString, pos,
  52                            size, style, validator, name ))
  53     {
  54         wxFAIL_MSG( wxT("wxGenericColourButton creation failed") );
  55         return false;
  56     }
  57
  58     // and handle user clicks on it
  59     Connect(wxEVT_COMMAND_BUTTON_CLICKED,
  60             wxCommandEventHandler(wxGenericColourButton::OnButtonClick),
  61             NULL, this);
  62
  63     m_colour = col;
  64     UpdateColour();
  65     InitColourData();
  66
  67     return true;
  68 }
  69
  70 void wxGenericColourButton::InitColourData()
  71 {
  72     ms_data.SetChooseFull(true);
  73     unsigned char grey = 0;
  74     for (int i = 0; i < 16; i++, grey += 16)
  75     {
  76         // fill with grey tones the custom colors palette
  77         wxColour colour(grey, grey, grey);
  78         ms_data.SetCustomColour(i, colour);
  79     }
  80 }
  81
  82 void wxGenericColourButton::OnButtonClick(wxCommandEvent& WXUNUSED(ev))
  83 {
  84     // update the wxColouData to be shown in the the dialog
  85     ms_data.SetColour(m_colour);
  86
  87     // create the colour dialog and display it
  88     wxColourDialog dlg(this, &ms_data);
  89     if (dlg.ShowModal() == wxID_OK)
  90     {
  91         ms_data = dlg.GetColourData();
  92         SetColour(ms_data.GetColour());
  93
  94         // fire an event
  95         wxColourPickerEvent event(this, GetId(), m_colour);
  96         GetEventHandler()->ProcessEvent(event);
  97     }
  98 }
  99
 100 void wxGenericColourButton::UpdateColour()
 101 {
 102     if ( !m_colour.Ok() )
 103     {
 104         if ( HasFlag(wxCLRP_SHOW_LABEL) )
 105             SetLabel(wxEmptyString);
 106         return;
 107     }
 108
 109     // some combinations of the fg/bg colours may be unreadable, so we invert
 110     // the colour to make sure fg colour is different enough from m_colour
 111     wxColour colFg(~m_colour.Red(), ~m_colour.Green(), ~m_colour.Blue());
 112
 113     SetForegroundColour(colFg);
 114     SetBackgroundColour(m_colour);
 115
 116     if ( HasFlag(wxCLRP_SHOW_LABEL) )
 117         SetLabel(m_colour.GetAsString(wxC2S_HTML_SYNTAX));
 118 }
 119
 120 wxSize wxGenericColourButton::DoGetBestSize() const
 121 {
 122     wxSize sz(wxButton::DoGetBestSize());
 123     if ( HasFlag(wxCLRP_SHOW_LABEL) )
 124         return sz;
 125
 126     // if we have no label, then make this button a square
 127     // (like e.g. native GTK version of this control)
 128     sz.SetWidth(sz.GetHeight());
 129     return sz;
 130 }
 131
 132 #endif      // wxUSE_COLOURPICKERCTRL