src/gtk1/settings.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        gtk/settings.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10
  11 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  12 #pragma implementation "settings.h"
  13 #endif
  14
  15 // For compilers that support precompilation, includes "wx.h".
  16 #include "wx/wxprec.h"
  17
  18 #include "wx/settings.h"
  19 #include "wx/debug.h"
  20 #include "wx/module.h"
  21 #include "wx/cmndata.h"
  22 #include "wx/fontutil.h"
  23
  24 #include <gdk/gdk.h>
  25 #include <gdk/gdkprivate.h>
  26 #include <gtk/gtk.h>
  27
  28 #define SHIFT (8*(sizeof(short int)-sizeof(char)))
  29
  30 // ----------------------------------------------------------------------------
  31 // wxSystemSettingsModule
  32 // ----------------------------------------------------------------------------
  33
  34 class wxSystemSettingsModule : public wxModule
  35 {
  36 public:
  37     virtual bool OnInit() { ms_instance = this; return TRUE; }
  38     virtual void OnExit() { ms_instance = NULL; }
  39
  40     static wxSystemSettingsModule *ms_instance;
  41
  42     wxColour m_colBtnFace,
  43              m_colBtnShadow,
  44              m_colBtnHighlight,
  45              m_colHighlight,
  46              m_colHighlightText,
  47              m_colListBox,
  48              m_colBtnText;
  49
  50     wxFont m_fontSystem;
  51
  52 private:
  53     DECLARE_DYNAMIC_CLASS(wxSystemSettingsModule)
  54 };
  55
  56 IMPLEMENT_DYNAMIC_CLASS(wxSystemSettingsModule, wxModule)
  57
  58 wxSystemSettingsModule *wxSystemSettingsModule::ms_instance = NULL;
  59
  60 // ----------------------------------------------------------------------------
  61 // wxSystemSettings implementation
  62 // ----------------------------------------------------------------------------
  63
  64 // kind of widget to use in GetColourFromGTKWidget
  65 enum wxGtkWidgetType
  66 {
  67     wxGTK_BUTTON,
  68     wxGTK_LIST
  69 };
  70
  71 // the colour we need
  72 enum wxGtkColourType
  73 {
  74     wxGTK_FG,
  75     wxGTK_BG,
  76     wxGTK_BASE
  77 };
  78
  79 // wxSystemSettings::GetColour() helper: get the colours from a GTK+
  80 // widget style, return true if we did get them, false to use defaults
  81 static bool GetColourFromGTKWidget(int& red, int& green, int& blue,
  82                                    wxGtkWidgetType type = wxGTK_BUTTON,
  83                                    GtkStateType state = GTK_STATE_NORMAL,
  84                                    wxGtkColourType colour = wxGTK_BG)
  85 {
  86     GtkWidget *widget;
  87     switch ( type )
  88     {
  89         default:
  90             wxFAIL_MSG( _T("unexpected GTK widget type") );
  91             // fall through
  92
  93         case wxGTK_BUTTON:
  94             widget = gtk_button_new();
  95             break;
  96
  97         case wxGTK_LIST:
  98             widget = gtk_list_new();
  99     }
 100
 101     GtkStyle *def = gtk_rc_get_style( widget );
 102     if ( !def )
 103         def = gtk_widget_get_default_style();
 104
 105     bool ok;
 106     if ( def )
 107     {
 108         GdkColor *col;
 109         switch ( colour )
 110         {
 111             default:
 112                 wxFAIL_MSG( _T("unexpected GTK colour type") );
 113                 // fall through
 114
 115             case wxGTK_FG:
 116                 col = def->fg;
 117                 break;
 118
 119             case wxGTK_BG:
 120                 col = def->bg;
 121                 break;
 122
 123             case wxGTK_BASE:
 124                 col = def->base;
 125                 break;
 126         }
 127
 128         red = col[state].red;
 129         green = col[state].green;
 130         blue = col[state].blue;
 131
 132         ok = TRUE;
 133     }
 134     else
 135     {
 136         ok = FALSE;
 137     }
 138
 139     gtk_widget_destroy( widget );
 140
 141     return ok;
 142 }
 143
 144 wxColour wxSystemSettingsNative::GetColour( wxSystemColour index )
 145 {
 146     switch (index)
 147     {
 148         case wxSYS_COLOUR_SCROLLBAR:
 149         case wxSYS_COLOUR_BACKGROUND:
 150         case wxSYS_COLOUR_ACTIVECAPTION:
 151         case wxSYS_COLOUR_INACTIVECAPTION:
 152         case wxSYS_COLOUR_MENU:
 153         case wxSYS_COLOUR_WINDOWFRAME:
 154         case wxSYS_COLOUR_ACTIVEBORDER:
 155         case wxSYS_COLOUR_INACTIVEBORDER:
 156         case wxSYS_COLOUR_BTNFACE:
 157         case wxSYS_COLOUR_MENUBAR:
 158         case wxSYS_COLOUR_3DLIGHT:
 159             if (!wxSystemSettingsModule::ms_instance->m_colBtnFace.Ok())
 160             {
 161                 int red, green, blue;
 162                 if ( !GetColourFromGTKWidget(red, green, blue) )
 163                 {
 164                     red =
 165                     green = 0;
 166                     blue = 0x9c40;
 167                 }
 168
 169                 wxSystemSettingsModule::ms_instance->m_colBtnFace = wxColour( red   >> SHIFT,
 170                                                    green >> SHIFT,
 171                                                    blue  >> SHIFT );
 172             }
 173             return wxSystemSettingsModule::ms_instance->m_colBtnFace;
 174
 175         case wxSYS_COLOUR_WINDOW:
 176             return *wxWHITE;
 177
 178         case wxSYS_COLOUR_3DDKSHADOW:
 179             return *wxBLACK;
 180
 181         case wxSYS_COLOUR_GRAYTEXT:
 182         case wxSYS_COLOUR_BTNSHADOW:
 183         //case wxSYS_COLOUR_3DSHADOW:
 184             if (!wxSystemSettingsModule::ms_instance->m_colBtnShadow.Ok())
 185             {
 186                 wxColour faceColour(GetColour(wxSYS_COLOUR_3DFACE));
 187                 wxSystemSettingsModule::ms_instance->m_colBtnShadow =
 188                    wxColour((unsigned char) (faceColour.Red() * 0.666),
 189                             (unsigned char) (faceColour.Green() * 0.666),
 190                             (unsigned char) (faceColour.Blue() * 0.666));
 191             }
 192
 193             return wxSystemSettingsModule::ms_instance->m_colBtnShadow;
 194
 195         case wxSYS_COLOUR_3DHIGHLIGHT:
 196         //case wxSYS_COLOUR_BTNHIGHLIGHT:
 197             return * wxWHITE;
 198
 199         case wxSYS_COLOUR_HIGHLIGHT:
 200             if (!wxSystemSettingsModule::ms_instance->m_colHighlight.Ok())
 201             {
 202                 int red, green, blue;
 203                 if ( !GetColourFromGTKWidget(red, green, blue,
 204                                              wxGTK_BUTTON,
 205                                              GTK_STATE_SELECTED) )
 206                 {
 207                     red =
 208                     green = 0;
 209                     blue = 0x9c40;
 210                 }
 211
 212                 wxSystemSettingsModule::ms_instance->m_colHighlight = wxColour( red   >> SHIFT,
 213                                                         green >> SHIFT,
 214                                                         blue  >> SHIFT );
 215             }
 216             return wxSystemSettingsModule::ms_instance->m_colHighlight;
 217
 218         case wxSYS_COLOUR_LISTBOX:
 219             if (!wxSystemSettingsModule::ms_instance->m_colListBox.Ok())
 220             {
 221                 int red, green, blue;
 222                 if ( GetColourFromGTKWidget(red, green, blue,
 223                                             wxGTK_LIST,
 224                                             GTK_STATE_NORMAL,
 225                                             wxGTK_BASE) )
 226                 {
 227                     wxSystemSettingsModule::ms_instance->m_colListBox = wxColour( red   >> SHIFT,
 228                                                           green >> SHIFT,
 229                                                           blue  >> SHIFT );
 230                 }
 231                 else
 232                 {
 233                     wxSystemSettingsModule::ms_instance->m_colListBox = wxColour(*wxWHITE);
 234                 }
 235             }
 236             return wxSystemSettingsModule::ms_instance->m_colListBox;
 237
 238         case wxSYS_COLOUR_MENUTEXT:
 239         case wxSYS_COLOUR_WINDOWTEXT:
 240         case wxSYS_COLOUR_CAPTIONTEXT:
 241         case wxSYS_COLOUR_INACTIVECAPTIONTEXT:
 242         case wxSYS_COLOUR_BTNTEXT:
 243         case wxSYS_COLOUR_INFOTEXT:
 244             if (!wxSystemSettingsModule::ms_instance->m_colBtnText.Ok())
 245             {
 246                 int red, green, blue;
 247                 if ( !GetColourFromGTKWidget(red, green, blue,
 248                                              wxGTK_BUTTON,
 249                                              GTK_STATE_NORMAL,
 250                                              wxGTK_FG) )
 251                 {
 252                     red =
 253                     green =
 254                     blue = 0;
 255                 }
 256
 257                 wxSystemSettingsModule::ms_instance->m_colBtnText = wxColour( red   >> SHIFT,
 258                                                       green >> SHIFT,
 259                                                       blue  >> SHIFT );
 260             }
 261             return wxSystemSettingsModule::ms_instance->m_colBtnText;
 262
 263             // this (as well as wxSYS_COLOUR_INFOTEXT above) is used for
 264             // tooltip windows - Robert, please change this code to use the
 265             // real GTK tooltips when/if you can (TODO)
 266         case wxSYS_COLOUR_INFOBK:
 267             return wxColour(255, 255, 225);
 268
 269         case wxSYS_COLOUR_HIGHLIGHTTEXT:
 270             if (!wxSystemSettingsModule::ms_instance->m_colHighlightText.Ok())
 271             {
 272                 wxColour hclr = GetColour(wxSYS_COLOUR_HIGHLIGHT);
 273                 if (hclr.Red() > 200 && hclr.Green() > 200 && hclr.Blue() > 200)
 274                     wxSystemSettingsModule::ms_instance->m_colHighlightText = wxColour(*wxBLACK);
 275                 else
 276                     wxSystemSettingsModule::ms_instance->m_colHighlightText = wxColour(*wxWHITE);
 277             }
 278             return wxSystemSettingsModule::ms_instance->m_colHighlightText;
 279
 280         case wxSYS_COLOUR_APPWORKSPACE:
 281             return *wxWHITE;    // ?
 282
 283         case wxSYS_COLOUR_HOTLIGHT:
 284         case wxSYS_COLOUR_GRADIENTACTIVECAPTION:
 285         case wxSYS_COLOUR_GRADIENTINACTIVECAPTION:
 286         case wxSYS_COLOUR_MENUHILIGHT:
 287             // TODO
 288             return *wxBLACK;
 289
 290         case wxSYS_COLOUR_MAX:
 291         default:
 292             wxFAIL_MSG( _T("unknown system colour index") );
 293   }
 294
 295   return *wxWHITE;
 296 }
 297
 298 wxFont wxSystemSettingsNative::GetFont( wxSystemFont index )
 299 {
 300     switch (index)
 301     {
 302         case wxSYS_OEM_FIXED_FONT:
 303         case wxSYS_ANSI_FIXED_FONT:
 304         case wxSYS_SYSTEM_FIXED_FONT:
 305         {
 306             return *wxNORMAL_FONT;
 307         }
 308         case wxSYS_ANSI_VAR_FONT:
 309         case wxSYS_SYSTEM_FONT:
 310         case wxSYS_DEVICE_DEFAULT_FONT:
 311         case wxSYS_DEFAULT_GUI_FONT:
 312         {
 313             if (!wxSystemSettingsModule::ms_instance->m_fontSystem.Ok())
 314             {
 315 #ifdef __WXGTK20__
 316                 GtkWidget *widget = gtk_button_new();
 317                 GtkStyle *def = gtk_rc_get_style( widget );
 318                 if ( !def || !def->font_desc )
 319                     def = gtk_widget_get_default_style();
 320                 if ( def && def->font_desc )
 321                 {
 322                     wxNativeFontInfo info;
 323                     info.description = def->font_desc;
 324                     wxSystemSettingsModule::ms_instance->m_fontSystem = wxFont(info);
 325                 }
 326                 else
 327                 {
 328                     const gchar *font_name =
 329                         _gtk_rc_context_get_default_font_name(gtk_settings_get_default());
 330                     wxSystemSettingsModule::ms_instance->m_fontSystem = wxFont(wxString::FromAscii(font_name));
 331                 }
 332                 gtk_widget_destroy( widget );
 333 #else
 334                 wxSystemSettingsModule::ms_instance->m_fontSystem = wxFont( 12, wxSWISS, wxNORMAL, wxNORMAL );
 335 #endif
 336             }
 337             return wxSystemSettingsModule::ms_instance->m_fontSystem;
 338         }
 339
 340         default:
 341             return wxNullFont;
 342     }
 343 }
 344
 345 int wxSystemSettingsNative::GetMetric( wxSystemMetric index )
 346 {
 347     switch (index)
 348     {
 349         case wxSYS_SCREEN_X:   return gdk_screen_width();
 350         case wxSYS_SCREEN_Y:   return gdk_screen_height();
 351         case wxSYS_HSCROLL_Y:  return 15;
 352         case wxSYS_VSCROLL_X:  return 15;
 353
 354         // VZ: is there any way to get the cursor size with GDK?
 355         case wxSYS_CURSOR_X:   return 16;
 356         case wxSYS_CURSOR_Y:   return 16;
 357         // MBN: ditto for icons
 358         case wxSYS_ICON_X:     return 32;
 359         case wxSYS_ICON_Y:     return 32;
 360         default:
 361             wxFAIL_MSG( wxT("wxSystemSettings::GetMetric not fully implemented") );
 362             return 0;
 363     }
 364 }
 365
 366 bool wxSystemSettingsNative::HasFeature(wxSystemFeature index)
 367 {
 368     switch (index)
 369     {
 370         case wxSYS_CAN_ICONIZE_FRAME:
 371             return FALSE;
 372             break;
 373         case wxSYS_CAN_DRAW_FRAME_DECORATIONS:
 374             return TRUE;
 375             break;
 376         default:
 377             return FALSE;
 378     }
 379 }