src/os2/button.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        button.cpp
   3 // Purpose:     wxButton
   4 // Author:      David Webster
   5 // Modified by:
   6 // Created:     10/13/99
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) David Webster
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // For compilers that support precompilation, includes "wx.h".
  13 #include "wx/wxprec.h"
  14
  15 #ifndef WX_PRECOMP
  16     #include "wx/button.h"
  17     #include "wx/brush.h"
  18     #include "wx/panel.h"
  19     #include "wx/bmpbuttn.h"
  20     #include "wx/settings.h"
  21     #include "wx/dcscreen.h"
  22 #endif
  23
  24 #include "wx/os2/private.h"
  25
  26 #if !USE_SHARED_LIBRARY
  27 IMPLEMENT_DYNAMIC_CLASS(wxButton, wxControl)
  28 #endif
  29
  30 // Button
  31
  32 bool wxButton::Create(wxWindow *parent, wxWindowID id, const wxString& label,
  33            const wxPoint& pos,
  34            const wxSize& size, long style,
  35            const wxValidator& validator,
  36            const wxString& name)
  37 {
  38     SetName(name);
  39     SetValidator(validator);
  40     m_windowStyle = style;
  41
  42     parent->AddChild((wxButton *)this);
  43
  44     if (id == -1)
  45         m_windowId = NewControlId();
  46     else
  47         m_windowId = id;
  48
  49     // TODO: create button
  50
  51     return FALSE;
  52 }
  53
  54 wxButton::~wxButton()
  55 {
  56     wxPanel *panel = wxDynamicCast(GetParent(), wxPanel);
  57     if ( panel )
  58     {
  59         if ( panel->GetDefaultItem() == this )
  60         {
  61             // don't leave the panel with invalid default item
  62             panel->SetDefaultItem(NULL);
  63         }
  64     }
  65 }
  66
  67 // ----------------------------------------------------------------------------
  68 // size management including autosizing
  69 // ----------------------------------------------------------------------------
  70
  71 wxSize wxButton::DoGetBestSize()
  72 {
  73     wxString label = wxGetWindowText(GetHWND());
  74     int wBtn;
  75     GetTextExtent(label, &wBtn, NULL);
  76
  77     int wChar, hChar;
  78     wxGetCharSize(GetHWND(), &wChar, &hChar, &GetFont());
  79
  80     // add a margin - the button is wider than just its label
  81     wBtn += 3*wChar;
  82
  83     // the button height is proportional to the height of the font used
  84     int hBtn = 0;// TODO: BUTTON_HEIGHT_FROM_CHAR_HEIGHT(hChar);
  85
  86     return wxSize(wBtn, hBtn);
  87 }
  88
  89 /* static */
  90 wxSize wxButton::GetDefaultSize()
  91 {
  92     static wxSize s_sizeBtn;
  93
  94     if ( s_sizeBtn.x == 0 )
  95     {
  96         wxScreenDC dc;
  97         dc.SetFont(wxSystemSettings::GetSystemFont(wxSYS_DEFAULT_GUI_FONT));
  98
  99         // the size of a standard button in the dialog units is 50x14,
 100         // translate this to pixels
 101         // NB1: the multipliers come from the Windows convention
 102         // NB2: the extra +1/+2 were needed to get the size be the same as the
 103         //      size of the buttons in the standard dialog - I don't know how
 104         //      this happens, but on my system this size is 75x23 in pixels and
 105         //      23*8 isn't even divisible by 14... Would be nice to understand
 106         //      why these constants are needed though!
 107         s_sizeBtn.x = (50 * (dc.GetCharWidth() + 1))/4;
 108         s_sizeBtn.y = ((14 * dc.GetCharHeight()) + 2)/8;
 109     }
 110
 111     return s_sizeBtn;
 112 }
 113
 114 void wxButton::Command (wxCommandEvent & event)
 115 {
 116     ProcessCommand (event);
 117 }
 118
 119 // ----------------------------------------------------------------------------
 120 // helpers
 121 // ----------------------------------------------------------------------------
 122
 123 bool wxButton::SendClickEvent()
 124 {
 125     wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, GetId());
 126     event.SetEventObject(this);
 127
 128     return ProcessCommand(event);
 129 }
 130
 131 void wxButton::SetDefault()
 132 {
 133     wxWindow *parent = GetParent();
 134     wxButton *btnOldDefault = NULL;
 135     wxPanel *panel = wxDynamicCast(parent, wxPanel);
 136     if (panel)
 137         panel->SetDefaultItem(this);
 138
 139     // TODO: make button the default
 140 }
 141
 142 // ----------------------------------------------------------------------------
 143 // event/message handlers
 144 // ----------------------------------------------------------------------------
 145
 146 bool wxButton::OS2Command(WXUINT param, WXWORD id)
 147 {
 148     bool processed = FALSE;
 149     // TODO
 150     /*
 151     switch ( param )
 152     {
 153         case 1:                                             // 1 for accelerator
 154         case BN_CLICKED:
 155             processed = SendClickEvent();
 156             break;
 157     }
 158     */
 159     return processed;
 160 }
 161
 162 WXHBRUSH wxButton::OnCtlColor(WXHDC pDC,
 163                               WXHWND pWnd,
 164                               WXUINT nCtlColor,
 165                               WXUINT message,
 166                               WXWPARAM wParam,
 167                               WXLPARAM lParam)
 168 {
 169   wxBrush *backgroundBrush = wxTheBrushList->FindOrCreateBrush(GetBackgroundColour(), wxSOLID);
 170
 171   return (WXHBRUSH) backgroundBrush->GetResourceHandle();
 172 }
 173
 174