src/gtk/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 #ifdef __GNUG__
  12 #pragma implementation "settings.h"
  13 #endif
  14
  15 #include "wx/settings.h"
  16 #include "wx/debug.h"
  17 #include "wx/module.h"
  18 #include "wx/cmndata.h"
  19 #include "wx/fontutil.h"
  20
  21 #include <gdk/gdk.h>
  22 #include <gdk/gdkprivate.h>
  23 #include <gtk/gtk.h>
  24
  25 #define SHIFT (8*(sizeof(short int)-sizeof(char)))
  26
  27 //wxColour *g_systemWinColour          = (wxColour *) NULL;
  28 wxColour *g_systemBtnFaceColour       = (wxColour *) NULL;
  29 wxColour *g_systemBtnShadowColour     = (wxColour *) NULL;
  30 wxColour *g_systemBtnHighlightColour  = (wxColour *) NULL;
  31 wxColour *g_systemHighlightColour     = (wxColour *) NULL;
  32 wxColour *g_systemHighlightTextColour = (wxColour *) NULL;
  33 wxColour *g_systemListBoxColour       = (wxColour *) NULL;
  34 wxColour *g_systemBtnTextColour       = (wxColour *) NULL;
  35
  36 wxFont *g_systemFont = (wxFont *) NULL;
  37
  38 // ----------------------------------------------------------------------------
  39 // wxSystemSettingsModule
  40 // ----------------------------------------------------------------------------
  41
  42 class wxSystemSettingsModule : public wxModule
  43 {
  44 public:
  45     bool OnInit() { return TRUE; }
  46     void OnExit()
  47     {
  48         //delete g_systemWinColour;
  49         delete g_systemBtnFaceColour;
  50         delete g_systemBtnShadowColour;
  51         delete g_systemBtnHighlightColour;
  52         delete g_systemHighlightColour;
  53         delete g_systemHighlightTextColour;
  54         delete g_systemListBoxColour;
  55         delete g_systemFont;
  56         delete g_systemBtnTextColour;
  57     }
  58     DECLARE_DYNAMIC_CLASS(wxSystemSettingsModule)
  59 };
  60
  61 IMPLEMENT_DYNAMIC_CLASS(wxSystemSettingsModule, wxModule)
  62
  63 // ----------------------------------------------------------------------------
  64 // wxSystemSettings implementation
  65 // ----------------------------------------------------------------------------
  66
  67 // kind of widget to use in GetColourFromGTKWidget
  68 enum wxGtkWidgetType
  69 {
  70     wxGTK_BUTTON,
  71     wxGTK_LIST
  72 };
  73
  74 // the colour we need
  75 enum wxGtkColourType
  76 {
  77     wxGTK_FG,
  78     wxGTK_BG,
  79     wxGTK_BASE
  80 };
  81
  82 // wxSystemSettings::GetColour() helper: get the colours from a GTK+
  83 // widget style, return true if we did get them, false to use defaults
  84 static bool GetColourFromGTKWidget(int& red, int& green, int& blue,
  85                                    wxGtkWidgetType type = wxGTK_BUTTON,
  86                                    GtkStateType state = GTK_STATE_NORMAL,
  87                                    wxGtkColourType colour = wxGTK_BG)
  88 {
  89     GtkWidget *widget;
  90     switch ( type )
  91     {
  92         default:
  93             wxFAIL_MSG( _T("unexpected GTK widget type") );
  94             // fall through
  95
  96         case wxGTK_BUTTON:
  97             widget = gtk_button_new();
  98             break;
  99
 100         case wxGTK_LIST:
 101             widget = gtk_list_new();
 102     }
 103
 104     GtkStyle *def = gtk_rc_get_style( widget );
 105     if ( !def )
 106         def = gtk_widget_get_default_style();
 107
 108     bool ok;
 109     if ( def )
 110     {
 111         GdkColor *col;
 112         switch ( colour )
 113         {
 114             default:
 115                 wxFAIL_MSG( _T("unexpected GTK colour type") );
 116                 // fall through
 117
 118             case wxGTK_FG:
 119                 col = def->fg;
 120                 break;
 121
 122             case wxGTK_BG:
 123                 col = def->bg;
 124                 break;
 125
 126             case wxGTK_BASE:
 127                 col = def->base;
 128                 break;
 129         }
 130
 131         red = col[state].red;
 132         green = col[state].green;
 133         blue = col[state].blue;
 134
 135         ok = TRUE;
 136     }
 137     else
 138     {
 139         ok = FALSE;
 140     }
 141
 142     gtk_widget_destroy( widget );
 143
 144     return ok;
 145 }
 146
 147 wxColour wxSystemSettingsNative::GetColour( wxSystemColour index )
 148 {
 149     switch (index)
 150     {
 151         case wxSYS_COLOUR_SCROLLBAR:
 152         case wxSYS_COLOUR_BACKGROUND:
 153         case wxSYS_COLOUR_ACTIVECAPTION:
 154         case wxSYS_COLOUR_INACTIVECAPTION:
 155         case wxSYS_COLOUR_MENU:
 156         case wxSYS_COLOUR_WINDOWFRAME:
 157         case wxSYS_COLOUR_ACTIVEBORDER:
 158         case wxSYS_COLOUR_INACTIVEBORDER:
 159         case wxSYS_COLOUR_BTNFACE:
 160         case wxSYS_COLOUR_MENUBAR:
 161         case wxSYS_COLOUR_3DLIGHT:
 162             if (!g_systemBtnFaceColour)
 163             {
 164                 int red, green, blue;
 165                 if ( !GetColourFromGTKWidget(red, green, blue) )
 166                 {
 167                     red =
 168                     green = 0;
 169                     blue = 0x9c40;
 170                 }
 171
 172                 g_systemBtnFaceColour = new wxColour( red   >> SHIFT,
 173                                                       green >> SHIFT,
 174                                                       blue  >> SHIFT );
 175             }
 176             return *g_systemBtnFaceColour;
 177
 178         case wxSYS_COLOUR_WINDOW:
 179             return *wxWHITE;
 180
 181         case wxSYS_COLOUR_3DDKSHADOW:
 182             return *wxBLACK;
 183
 184         case wxSYS_COLOUR_GRAYTEXT:
 185         case wxSYS_COLOUR_BTNSHADOW:
 186         //case wxSYS_COLOUR_3DSHADOW:
 187             if (!g_systemBtnShadowColour)
 188             {
 189                 wxColour faceColour(GetColour(wxSYS_COLOUR_3DFACE));
 190                 g_systemBtnShadowColour =
 191                    new wxColour((unsigned char) (faceColour.Red() * 0.666),
 192                                 (unsigned char) (faceColour.Green() * 0.666),
 193                                 (unsigned char) (faceColour.Blue() * 0.666));
 194             }
 195
 196             return *g_systemBtnShadowColour;
 197
 198         case wxSYS_COLOUR_3DHIGHLIGHT:
 199         //case wxSYS_COLOUR_BTNHIGHLIGHT:
 200             return * wxWHITE;
 201 /* I think this should normally be white (JACS 8/2000)
 202
 203    Hmm, I'm quite sure it shouldn't ... (VZ 20.08.01)
 204             if (!g_systemBtnHighlightColour)
 205             {
 206                 g_systemBtnHighlightColour =
 207                     new wxColour( 0xea60 >> SHIFT,
 208                                   0xea60 >> SHIFT,
 209                                   0xea60 >> SHIFT );
 210             }
 211             return *g_systemBtnHighlightColour;
 212 */
 213
 214         case wxSYS_COLOUR_HIGHLIGHT:
 215             if (!g_systemHighlightColour)
 216             {
 217                 int red, green, blue;
 218                 if ( !GetColourFromGTKWidget(red, green, blue,
 219                                              wxGTK_BUTTON,
 220                                              GTK_STATE_SELECTED) )
 221                 {
 222                     red =
 223                     green = 0;
 224                     blue = 0x9c40;
 225                 }
 226
 227                 g_systemHighlightColour = new wxColour( red   >> SHIFT,
 228                                                         green >> SHIFT,
 229                                                         blue  >> SHIFT );
 230             }
 231             return *g_systemHighlightColour;
 232
 233         case wxSYS_COLOUR_LISTBOX:
 234             if (!g_systemListBoxColour)
 235             {
 236                 int red, green, blue;
 237                 if ( GetColourFromGTKWidget(red, green, blue,
 238                                             wxGTK_LIST,
 239                                             GTK_STATE_NORMAL,
 240                                             wxGTK_BASE) )
 241                 {
 242                     g_systemListBoxColour = new wxColour( red   >> SHIFT,
 243                                                           green >> SHIFT,
 244                                                           blue  >> SHIFT );
 245                 }
 246                 else
 247                 {
 248                     g_systemListBoxColour = new wxColour(*wxWHITE);
 249                 }
 250             }
 251             return *g_systemListBoxColour;
 252
 253         case wxSYS_COLOUR_MENUTEXT:
 254         case wxSYS_COLOUR_WINDOWTEXT:
 255         case wxSYS_COLOUR_CAPTIONTEXT:
 256         case wxSYS_COLOUR_INACTIVECAPTIONTEXT:
 257         case wxSYS_COLOUR_BTNTEXT:
 258         case wxSYS_COLOUR_INFOTEXT:
 259             if (!g_systemBtnTextColour)
 260             {
 261                 int red, green, blue;
 262                 if ( !GetColourFromGTKWidget(red, green, blue,
 263                                              wxGTK_BUTTON,
 264                                              GTK_STATE_NORMAL,
 265                                              wxGTK_FG) )
 266                 {
 267                     red =
 268                     green =
 269                     blue = 0;
 270                 }
 271
 272                 g_systemBtnTextColour = new wxColour( red   >> SHIFT,
 273                                                       green >> SHIFT,
 274                                                       blue  >> SHIFT );
 275             }
 276             return *g_systemBtnTextColour;
 277
 278             // this (as well as wxSYS_COLOUR_INFOTEXT above) is used for
 279             // tooltip windows - Robert, please change this code to use the
 280             // real GTK tooltips when/if you can (TODO)
 281         case wxSYS_COLOUR_INFOBK:
 282             return wxColour(255, 255, 225);
 283
 284         case wxSYS_COLOUR_HIGHLIGHTTEXT:
 285             if (!g_systemHighlightTextColour)
 286             {
 287                 wxColour hclr = GetColour(wxSYS_COLOUR_HIGHLIGHT);
 288                 if (hclr.Red() > 200 && hclr.Green() > 200 && hclr.Blue() > 200)
 289                     g_systemHighlightTextColour = new wxColour(*wxBLACK);
 290                 else
 291                     g_systemHighlightTextColour = new wxColour(*wxWHITE);
 292             }
 293             return *g_systemHighlightTextColour;
 294
 295         case wxSYS_COLOUR_APPWORKSPACE:
 296             return *wxWHITE;    // ?
 297
 298         case wxSYS_COLOUR_HOTLIGHT:
 299         case wxSYS_COLOUR_GRADIENTACTIVECAPTION:
 300         case wxSYS_COLOUR_GRADIENTINACTIVECAPTION:
 301         case wxSYS_COLOUR_MENUHILIGHT:
 302             // TODO
 303             return *wxBLACK;
 304
 305         case wxSYS_COLOUR_MAX:
 306         default:
 307             wxFAIL_MSG( _T("unknown system colour index") );
 308   }
 309
 310   return *wxWHITE;
 311 }
 312
 313 wxFont wxSystemSettingsNative::GetFont( wxSystemFont index )
 314 {
 315     switch (index)
 316     {
 317         case wxSYS_OEM_FIXED_FONT:
 318         case wxSYS_ANSI_FIXED_FONT:
 319         case wxSYS_SYSTEM_FIXED_FONT:
 320         {
 321             return *wxNORMAL_FONT;
 322         }
 323         case wxSYS_ANSI_VAR_FONT:
 324         case wxSYS_SYSTEM_FONT:
 325         case wxSYS_DEVICE_DEFAULT_FONT:
 326         case wxSYS_DEFAULT_GUI_FONT:
 327         {
 328             if (!g_systemFont)
 329             {
 330 #ifdef __WXGTK20__
 331                 GtkWidget *widget = gtk_button_new();
 332                 GtkStyle *def = gtk_rc_get_style( widget );
 333                 if (!def)
 334                     def = gtk_widget_get_default_style();
 335                 if (def)
 336                 {
 337                     wxNativeFontInfo info;
 338                     info.description = def->font_desc;
 339                     g_systemFont = new wxFont(info);
 340                 }
 341                 else
 342                 {
 343                     const gchar *font_name =
 344                         _gtk_rc_context_get_default_font_name(gtk_settings_get_default());
 345                     g_systemFont = new wxFont(wxString::FromAscii(font_name));
 346                 }
 347                 gtk_widget_destroy( widget );
 348 #else
 349                 g_systemFont = new wxFont( 12, wxSWISS, wxNORMAL, wxNORMAL );
 350 #endif
 351             }
 352             return *g_systemFont;
 353         }
 354
 355         default:
 356             return wxNullFont;
 357     }
 358 }
 359
 360 int wxSystemSettingsNative::GetMetric( wxSystemMetric index )
 361 {
 362     switch (index)
 363     {
 364         case wxSYS_SCREEN_X:   return gdk_screen_width();
 365         case wxSYS_SCREEN_Y:   return gdk_screen_height();
 366         case wxSYS_HSCROLL_Y:  return 15;
 367         case wxSYS_VSCROLL_X:  return 15;
 368
 369         // VZ: is there any way to get the cursor size with GDK?
 370         case wxSYS_CURSOR_X:   return 16;
 371         case wxSYS_CURSOR_Y:   return 16;
 372         // MBN: ditto for icons
 373         case wxSYS_ICON_X:     return 32;
 374         case wxSYS_ICON_Y:     return 32;
 375         default:
 376             wxFAIL_MSG( wxT("wxSystemSettings::GetMetric not fully implemented") );
 377             return 0;
 378     }
 379 }
 380
 381 bool wxSystemSettingsNative::HasFeature(wxSystemFeature index)
 382 {
 383     switch (index)
 384     {
 385         case wxSYS_CAN_ICONIZE_FRAME:
 386             return FALSE;
 387             break;
 388         case wxSYS_CAN_DRAW_FRAME_DECORATIONS:
 389             return TRUE;
 390             break;
 391         default:
 392             return FALSE;
 393     }
 394 }