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