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 IMPLEMENT_DYNAMIC_CLASS(wxButton, wxControl)
  27
  28 // Button
  29
  30 bool wxButton::Create(wxWindow *parent, wxWindowID id, const wxString& label,
  31            const wxPoint& pos,
  32            const wxSize& size, long style,
  33 #if wxUSE_VALIDATORS
  34            const wxValidator& validator,
  35 #endif
  36            const wxString& name)
  37 {
  38     SetName(name);
  39 #if wxUSE_VALIDATORS
  40     SetValidator(validator);
  41 #endif
  42     m_windowStyle = style;
  43
  44     parent->AddChild((wxButton *)this);
  45
  46     if (id == -1)
  47         m_windowId = NewControlId();
  48     else
  49         m_windowId = id;
  50
  51     // TODO: create button
  52
  53     return FALSE;
  54 }
  55
  56 wxButton::~wxButton()
  57 {
  58     wxPanel *panel = wxDynamicCast(GetParent(), wxPanel);
  59     if ( panel )
  60     {
  61         if ( panel->GetDefaultItem() == this )
  62         {
  63             // don't leave the panel with invalid default item
  64             panel->SetDefaultItem(NULL);
  65         }
  66     }
  67 }
  68
  69 // ----------------------------------------------------------------------------
  70 // size management including autosizing
  71 // ----------------------------------------------------------------------------
  72
  73 wxSize wxButton::DoGetBestSize() const
  74 {
  75     wxString label = wxGetWindowText(GetHWND());
  76     int wBtn;
  77     GetTextExtent(label, &wBtn, NULL);
  78
  79     int wChar, hChar;
  80     wxGetCharSize(GetHWND(), &wChar, &hChar, (wxFont*)&GetFont());
  81
  82     // add a margin - the button is wider than just its label
  83     wBtn += 3*wChar;
  84
  85     // the button height is proportional to the height of the font used
  86     int hBtn = 0;// TODO: BUTTON_HEIGHT_FROM_CHAR_HEIGHT(hChar);
  87
  88     return wxSize(wBtn, hBtn);
  89 }
  90
  91 /* static */
  92 wxSize wxButton::GetDefaultSize()
  93 {
  94     static wxSize s_sizeBtn;
  95
  96     if ( s_sizeBtn.x == 0 )
  97     {
  98         wxScreenDC dc;
  99         dc.SetFont(wxSystemSettings::GetSystemFont(wxSYS_DEFAULT_GUI_FONT));
 100
 101         // the size of a standard button in the dialog units is 50x14,
 102         // translate this to pixels
 103         // NB1: the multipliers come from the Windows convention
 104         // NB2: the extra +1/+2 were needed to get the size be the same as the
 105         //      size of the buttons in the standard dialog - I don't know how
 106         //      this happens, but on my system this size is 75x23 in pixels and
 107         //      23*8 isn't even divisible by 14... Would be nice to understand
 108         //      why these constants are needed though!
 109         s_sizeBtn.x = (50 * (dc.GetCharWidth() + 1))/4;
 110         s_sizeBtn.y = ((14 * dc.GetCharHeight()) + 2)/8;
 111     }
 112
 113     return s_sizeBtn;
 114 }
 115
 116 void wxButton::Command (wxCommandEvent & event)
 117 {
 118     ProcessCommand (event);
 119 }
 120
 121 // ----------------------------------------------------------------------------
 122 // helpers
 123 // ----------------------------------------------------------------------------
 124
 125 bool wxButton::SendClickEvent()
 126 {
 127     wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, GetId());
 128     event.SetEventObject(this);
 129
 130     return ProcessCommand(event);
 131 }
 132
 133 void wxButton::SetDefault()
 134 {
 135     wxWindow *parent = GetParent();
 136     wxButton *btnOldDefault = NULL;
 137     wxPanel *panel = wxDynamicCast(parent, wxPanel);
 138     if (panel)
 139         panel->SetDefaultItem(this);
 140
 141     // TODO: make button the default
 142 }
 143
 144 // ----------------------------------------------------------------------------
 145 // event/message handlers
 146 // ----------------------------------------------------------------------------
 147
 148 bool wxButton::OS2Command(WXUINT param, WXWORD id)
 149 {
 150     bool processed = FALSE;
 151     // TODO
 152     /*
 153     switch ( param )
 154     {
 155         case 1:                                             // 1 for accelerator
 156         case BN_CLICKED:
 157             processed = SendClickEvent();
 158             break;
 159     }
 160     */
 161     return processed;
 162 }
 163
 164 WXHBRUSH wxButton::OnCtlColor(WXHDC pDC,
 165                               WXHWND pWnd,
 166                               WXUINT nCtlColor,
 167                               WXUINT message,
 168                               WXWPARAM wParam,
 169                               WXLPARAM lParam)
 170 {
 171   wxBrush *backgroundBrush = wxTheBrushList->FindOrCreateBrush(GetBackgroundColour(), wxSOLID);
 172
 173   return (WXHBRUSH) backgroundBrush->GetResourceHandle();
 174 }
 175
 176