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 #if wxUSE_VALIDATORS
  36 #  if defined(__VISAGECPP__)
  37            const wxValidator* validator,
  38 #  else
  39            const wxValidator& validator,
  40 #  endif
  41 #endif
  42            const wxString& name)
  43 {
  44     SetName(name);
  45 #if wxUSE_VALIDATORS
  46     SetValidator(validator);
  47 #endif
  48     m_windowStyle = style;
  49
  50     parent->AddChild((wxButton *)this);
  51
  52     if (id == -1)
  53         m_windowId = NewControlId();
  54     else
  55         m_windowId = id;
  56
  57     // TODO: create button
  58
  59     return FALSE;
  60 }
  61
  62 wxButton::~wxButton()
  63 {
  64     wxPanel *panel = wxDynamicCast(GetParent(), wxPanel);
  65     if ( panel )
  66     {
  67         if ( panel->GetDefaultItem() == this )
  68         {
  69             // don't leave the panel with invalid default item
  70             panel->SetDefaultItem(NULL);
  71         }
  72     }
  73 }
  74
  75 // ----------------------------------------------------------------------------
  76 // size management including autosizing
  77 // ----------------------------------------------------------------------------
  78
  79 wxSize wxButton::DoGetBestSize()
  80 {
  81     wxString label = wxGetWindowText(GetHWND());
  82     int wBtn;
  83     GetTextExtent(label, &wBtn, NULL);
  84
  85     int wChar, hChar;
  86     wxGetCharSize(GetHWND(), &wChar, &hChar, &GetFont());
  87
  88     // add a margin - the button is wider than just its label
  89     wBtn += 3*wChar;
  90
  91     // the button height is proportional to the height of the font used
  92     int hBtn = 0;// TODO: BUTTON_HEIGHT_FROM_CHAR_HEIGHT(hChar);
  93
  94     return wxSize(wBtn, hBtn);
  95 }
  96
  97 /* static */
  98 wxSize wxButton::GetDefaultSize()
  99 {
 100     static wxSize s_sizeBtn;
 101
 102     if ( s_sizeBtn.x == 0 )
 103     {
 104         wxScreenDC dc;
 105         dc.SetFont(wxSystemSettings::GetSystemFont(wxSYS_DEFAULT_GUI_FONT));
 106
 107         // the size of a standard button in the dialog units is 50x14,
 108         // translate this to pixels
 109         // NB1: the multipliers come from the Windows convention
 110         // NB2: the extra +1/+2 were needed to get the size be the same as the
 111         //      size of the buttons in the standard dialog - I don't know how
 112         //      this happens, but on my system this size is 75x23 in pixels and
 113         //      23*8 isn't even divisible by 14... Would be nice to understand
 114         //      why these constants are needed though!
 115         s_sizeBtn.x = (50 * (dc.GetCharWidth() + 1))/4;
 116         s_sizeBtn.y = ((14 * dc.GetCharHeight()) + 2)/8;
 117     }
 118
 119     return s_sizeBtn;
 120 }
 121
 122 void wxButton::Command (wxCommandEvent & event)
 123 {
 124     ProcessCommand (event);
 125 }
 126
 127 // ----------------------------------------------------------------------------
 128 // helpers
 129 // ----------------------------------------------------------------------------
 130
 131 bool wxButton::SendClickEvent()
 132 {
 133     wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, GetId());
 134     event.SetEventObject(this);
 135
 136     return ProcessCommand(event);
 137 }
 138
 139 void wxButton::SetDefault()
 140 {
 141     wxWindow *parent = GetParent();
 142     wxButton *btnOldDefault = NULL;
 143     wxPanel *panel = wxDynamicCast(parent, wxPanel);
 144     if (panel)
 145         panel->SetDefaultItem(this);
 146
 147     // TODO: make button the default
 148 }
 149
 150 // ----------------------------------------------------------------------------
 151 // event/message handlers
 152 // ----------------------------------------------------------------------------
 153
 154 bool wxButton::OS2Command(WXUINT param, WXWORD id)
 155 {
 156     bool processed = FALSE;
 157     // TODO
 158     /*
 159     switch ( param )
 160     {
 161         case 1:                                             // 1 for accelerator
 162         case BN_CLICKED:
 163             processed = SendClickEvent();
 164             break;
 165     }
 166     */
 167     return processed;
 168 }
 169
 170 WXHBRUSH wxButton::OnCtlColor(WXHDC pDC,
 171                               WXHWND pWnd,
 172                               WXUINT nCtlColor,
 173                               WXUINT message,
 174                               WXWPARAM wParam,
 175                               WXLPARAM lParam)
 176 {
 177   wxBrush *backgroundBrush = wxTheBrushList->FindOrCreateBrush(GetBackgroundColour(), wxSOLID);
 178
 179   return (WXHBRUSH) backgroundBrush->GetResourceHandle();
 180 }
 181
 182