src/msw/settings.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        msw/settings.cpp
   3 // Purpose:     wxSystemSettingsNative implementation for MSW
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart and Markus Holzem
   9 // Licence:     wxWindows license
  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 #ifndef WX_PRECOMP
  28     #include "wx/gdicmn.h"
  29 #endif
  30
  31 #include "wx/settings.h"
  32
  33 #include "wx/msw/private.h"
  34
  35 #include "wx/module.h"
  36 #include "wx/fontutil.h"
  37
  38 // ----------------------------------------------------------------------------
  39 // private classes
  40 // ----------------------------------------------------------------------------
  41
  42 // the module which is used to clean up wxSystemSettingsNative data (this is a
  43 // singleton class so it can't be done in the dtor)
  44 class wxSystemSettingsModule : public wxModule
  45 {
  46 public:
  47     virtual bool OnInit();
  48     virtual void OnExit();
  49
  50 private:
  51     DECLARE_DYNAMIC_CLASS(wxSystemSettingsModule)
  52 };
  53
  54 // ----------------------------------------------------------------------------
  55 // global data
  56 // ----------------------------------------------------------------------------
  57
  58 // the font returned by GetFont(wxSYS_DEFAULT_GUI_FONT): it is created when
  59 // GetFont() is called for the first time and deleted by wxSystemSettingsModule
  60 static wxFont *gs_fontDefault = NULL;
  61
  62 // ============================================================================
  63 // implementation
  64 // ============================================================================
  65
  66 // TODO: see ::SystemParametersInfo for all sorts of Windows settings.
  67 // Different args are required depending on the id. How does this differ
  68 // from GetSystemMetric, and should it? Perhaps call it GetSystemParameter
  69 // and pass an optional void* arg to get further info.
  70 // Should also have SetSystemParameter.
  71 // Also implement WM_WININICHANGE (NT) / WM_SETTINGCHANGE (Win95)
  72
  73 // ----------------------------------------------------------------------------
  74 // wxSystemSettingsModule
  75 // ----------------------------------------------------------------------------
  76
  77 IMPLEMENT_DYNAMIC_CLASS(wxSystemSettingsModule, wxModule)
  78
  79 bool wxSystemSettingsModule::OnInit()
  80 {
  81     return TRUE;
  82 }
  83
  84 void wxSystemSettingsModule::OnExit()
  85 {
  86     delete gs_fontDefault;
  87     gs_fontDefault = NULL;
  88 }
  89
  90 // ----------------------------------------------------------------------------
  91 // wxSystemSettingsNative
  92 // ----------------------------------------------------------------------------
  93
  94 // ----------------------------------------------------------------------------
  95 // colours
  96 // ----------------------------------------------------------------------------
  97
  98 wxColour wxSystemSettingsNative::GetColour(wxSystemColour index)
  99 {
 100     wxColour col;
 101     wxRGBToColour(col, ::GetSysColor(index));
 102     return col;
 103 }
 104
 105 // ----------------------------------------------------------------------------
 106 // fonts
 107 // ----------------------------------------------------------------------------
 108
 109 wxFont wxCreateFontFromStockObject(int index)
 110 {
 111     wxFont font;
 112
 113     HFONT hFont = (HFONT) ::GetStockObject(index);
 114     if ( hFont )
 115     {
 116         LOGFONT lf;
 117         if ( ::GetObject(hFont, sizeof(LOGFONT), &lf) != 0 )
 118         {
 119             wxNativeFontInfo info;
 120             info.lf = lf;
 121             // Under MicroWindows we pass the HFONT as well
 122             // because it's hard to convert HFONT -> LOGFONT -> HFONT
 123             // It's OK to delete stock objects, the delete will be ignored.
 124 #ifdef __WXMICROWIN__
 125             font.Create(info, (WXHFONT) hFont);
 126 #else
 127             font.Create(info);
 128 #endif
 129         }
 130         else
 131         {
 132             wxFAIL_MSG( _T("failed to get LOGFONT") );
 133         }
 134     }
 135     else // GetStockObject() failed
 136     {
 137         wxFAIL_MSG( _T("stock font not found") );
 138     }
 139
 140     return font;
 141 }
 142
 143 wxFont wxSystemSettingsNative::GetFont(wxSystemFont index)
 144 {
 145     // wxWindow ctor calls GetSystemFont(wxSYS_DEFAULT_GUI_FONT) so we're
 146     // called fairly often - this is why we cache this particular font
 147     bool isDefaultRequested = index == wxSYS_DEFAULT_GUI_FONT;
 148     if ( isDefaultRequested && gs_fontDefault )
 149     {
 150         return *gs_fontDefault;
 151     }
 152
 153     wxFont font = wxCreateFontFromStockObject(index);
 154
 155     if ( isDefaultRequested )
 156     {
 157         // if we got here it means we hadn't cached it yet - do now
 158         gs_fontDefault = new wxFont(font);
 159     }
 160
 161     return font;
 162 }
 163
 164 // ----------------------------------------------------------------------------
 165 // system metrics/features
 166 // ----------------------------------------------------------------------------
 167
 168 // TODO: some of the "metrics" clearly should be features now that we have
 169 //       HasFeature()!
 170
 171 // the conversion table from wxSystemMetric enum to GetSystemMetrics() param
 172 //
 173 // if the constant is not defined, put -1 in the table to indicate that it is
 174 // unknown
 175 static const int gs_metricsMap[] =
 176 {
 177 #ifdef __WIN32__
 178     SM_CMOUSEBUTTONS,
 179 #else
 180     -1,
 181 #endif
 182
 183     SM_CXBORDER,
 184     SM_CYBORDER,
 185     SM_CXCURSOR,
 186     SM_CYCURSOR,
 187     SM_CXDOUBLECLK,
 188     SM_CYDOUBLECLK,
 189 #if defined(__WIN32__) && defined(SM_CXDRAG)
 190     SM_CXDRAG,
 191     SM_CYDRAG,
 192     SM_CXEDGE,
 193     SM_CYEDGE,
 194 #else
 195     -1, -1, -1, -1
 196 #endif
 197     SM_CXHSCROLL,
 198     SM_CYHSCROLL,
 199     SM_CXHTHUMB,
 200     SM_CXICON,
 201     SM_CYICON,
 202     SM_CXICONSPACING,
 203     SM_CYICONSPACING,
 204     SM_CXMIN,
 205     SM_CYMIN,
 206     SM_CXSCREEN,
 207     SM_CYSCREEN,
 208
 209 #if defined(__WIN32__) && defined(SM_CXSIZEFRAME)
 210     SM_CXSIZEFRAME,
 211     SM_CYSIZEFRAME,
 212     SM_CXSMICON,
 213     SM_CYSMICON,
 214 #else
 215     -1, -1, -1, -1
 216 #endif
 217     SM_CYHSCROLL,
 218     SM_CXVSCROLL,
 219     SM_CXVSCROLL,
 220     SM_CYVSCROLL,
 221     SM_CYVTHUMB,
 222     SM_CYCAPTION,
 223     SM_CYMENU,
 224 #if defined(__WIN32__) && defined(SM_NETWORK)
 225     SM_NETWORK,
 226 #else
 227     -1,
 228 #endif
 229     SM_PENWINDOWS,
 230 #if defined(__WIN32__) && defined(SM_SHOWSOUNDS)
 231     SM_SHOWSOUNDS,
 232 #else
 233     -1,
 234 #endif
 235     SM_SWAPBUTTON,
 236 };
 237
 238 // Get a system metric, e.g. scrollbar size
 239 int wxSystemSettingsNative::GetMetric(wxSystemMetric index)
 240 {
 241 #ifdef __WXMICROWIN__
 242     // TODO: probably use wxUniv themes functionality
 243     return 0;
 244 #else // !__WXMICROWIN__
 245     wxCHECK_MSG( index < WXSIZEOF(gs_metricsMap), 0, _T("invalid metric") );
 246
 247     int indexMSW = gs_metricsMap[index];
 248     if ( indexMSW == -1 )
 249     {
 250         // not supported under current system
 251         return 0;
 252     }
 253
 254     int rc = ::GetSystemMetrics(indexMSW);
 255     if ( index == wxSYS_NETWORK_PRESENT )
 256     {
 257         // only the last bit is significant according to the MSDN
 258         rc &= 1;
 259     }
 260
 261     return rc;
 262 #endif // __WXMICROWIN__/!__WXMICROWIN__
 263 }
 264
 265 bool wxSystemSettingsNative::HasFeature(wxSystemFeature index)
 266 {
 267     switch ( index )
 268     {
 269         case wxSYS_CAN_ICONIZE_FRAME:
 270         case wxSYS_CAN_DRAW_FRAME_DECORATIONS:
 271             return TRUE;
 272
 273         default:
 274             wxFAIL_MSG( _T("unknown system feature") );
 275
 276             return FALSE;
 277     }
 278 }