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 #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 //wxColour *g_systemWinColour          = (wxColour *) NULL;
  31 wxColour *g_systemBtnFaceColour       = (wxColour *) NULL;
  32 wxColour *g_systemBtnShadowColour     = (wxColour *) NULL;
  33 wxColour *g_systemBtnHighlightColour  = (wxColour *) NULL;
  34 wxColour *g_systemHighlightColour     = (wxColour *) NULL;
  35 wxColour *g_systemHighlightTextColour = (wxColour *) NULL;
  36 wxColour *g_systemListBoxColour       = (wxColour *) NULL;
  37 wxColour *g_systemBtnTextColour       = (wxColour *) NULL;
  38
  39 wxFont *g_systemFont = (wxFont *) NULL;
  40
  41 // ----------------------------------------------------------------------------
  42 // wxSystemSettingsModule
  43 // ----------------------------------------------------------------------------
  44
  45 class wxSystemSettingsModule : public wxModule
  46 {
  47 public:
  48     bool OnInit() { return TRUE; }
  49     void OnExit()
  50     {
  51         //delete g_systemWinColour;
  52         delete g_systemBtnFaceColour;
  53         delete g_systemBtnShadowColour;
  54         delete g_systemBtnHighlightColour;
  55         delete g_systemHighlightColour;
  56         delete g_systemHighlightTextColour;
  57         delete g_systemListBoxColour;
  58         delete g_systemFont;
  59         delete g_systemBtnTextColour;
  60     }
  61     DECLARE_DYNAMIC_CLASS(wxSystemSettingsModule)
  62 };
  63
  64 IMPLEMENT_DYNAMIC_CLASS(wxSystemSettingsModule, wxModule)
  65
  66 // ----------------------------------------------------------------------------
  67 // wxSystemSettings implementation
  68 // ----------------------------------------------------------------------------
  69
  70 // kind of widget to use in GetColourFromGTKWidget
  71 enum wxGtkWidgetType
  72 {
  73     wxGTK_BUTTON,
  74     wxGTK_LIST
  75 };
  76
  77 // the colour we need
  78 enum wxGtkColourType
  79 {
  80     wxGTK_FG,
  81     wxGTK_BG,
  82     wxGTK_BASE
  83 };
  84
  85 // wxSystemSettings::GetColour() helper: get the colours from a GTK+
  86 // widget style, return true if we did get them, false to use defaults
  87 static bool GetColourFromGTKWidget(int& red, int& green, int& blue,
  88                                    wxGtkWidgetType type = wxGTK_BUTTON,
  89                                    GtkStateType state = GTK_STATE_NORMAL,
  90                                    wxGtkColourType colour = wxGTK_BG)
  91 {
  92     GtkWidget *widget;
  93     switch ( type )
  94     {
  95         default:
  96             wxFAIL_MSG( _T("unexpected GTK widget type") );
  97             // fall through
  98
  99         case wxGTK_BUTTON:
 100             widget = gtk_button_new();
 101             break;
 102
 103         case wxGTK_LIST:
 104             widget = gtk_list_new();
 105     }
 106
 107     GtkStyle *def = gtk_rc_get_style( widget );
 108     if ( !def )
 109         def = gtk_widget_get_default_style();
 110
 111     bool ok;
 112     if ( def )
 113     {
 114         GdkColor *col;
 115         switch ( colour )
 116         {
 117             default:
 118                 wxFAIL_MSG( _T("unexpected GTK colour type") );
 119                 // fall through
 120
 121             case wxGTK_FG:
 122                 col = def->fg;
 123                 break;
 124
 125             case wxGTK_BG:
 126                 col = def->bg;
 127                 break;
 128
 129             case wxGTK_BASE:
 130                 col = def->base;
 131                 break;
 132         }
 133
 134         red = col[state].red;
 135         green = col[state].green;
 136         blue = col[state].blue;
 137
 138         ok = TRUE;
 139     }
 140     else
 141     {
 142         ok = FALSE;
 143     }
 144
 145     gtk_widget_destroy( widget );
 146
 147     return ok;
 148 }
 149
 150 wxColour wxSystemSettingsNative::GetColour( wxSystemColour index )
 151 {
 152     switch (index)
 153     {
 154         case wxSYS_COLOUR_SCROLLBAR:
 155         case wxSYS_COLOUR_BACKGROUND:
 156         case wxSYS_COLOUR_ACTIVECAPTION:
 157         case wxSYS_COLOUR_INACTIVECAPTION:
 158         case wxSYS_COLOUR_MENU:
 159         case wxSYS_COLOUR_WINDOWFRAME:
 160         case wxSYS_COLOUR_ACTIVEBORDER:
 161         case wxSYS_COLOUR_INACTIVEBORDER:
 162         case wxSYS_COLOUR_BTNFACE:
 163         case wxSYS_COLOUR_MENUBAR:
 164         case wxSYS_COLOUR_3DLIGHT:
 165             if (!g_systemBtnFaceColour)
 166             {
 167                 int red, green, blue;
 168                 if ( !GetColourFromGTKWidget(red, green, blue) )
 169                 {
 170                     red =
 171                     green = 0;
 172                     blue = 0x9c40;
 173                 }
 174
 175                 g_systemBtnFaceColour = new wxColour( red   >> SHIFT,
 176                                                       green >> SHIFT,
 177                                                       blue  >> SHIFT );
 178             }
 179             return *g_systemBtnFaceColour;
 180
 181         case wxSYS_COLOUR_WINDOW:
 182             return *wxWHITE;
 183
 184         case wxSYS_COLOUR_3DDKSHADOW:
 185             return *wxBLACK;
 186
 187         case wxSYS_COLOUR_GRAYTEXT:
 188         case wxSYS_COLOUR_BTNSHADOW:
 189         //case wxSYS_COLOUR_3DSHADOW:
 190             if (!g_systemBtnShadowColour)
 191             {
 192                 wxColour faceColour(GetColour(wxSYS_COLOUR_3DFACE));
 193                 g_systemBtnShadowColour =
 194                    new wxColour((unsigned char) (faceColour.Red() * 0.666),
 195                                 (unsigned char) (faceColour.Green() * 0.666),
 196                                 (unsigned char) (faceColour.Blue() * 0.666));
 197             }
 198
 199             return *g_systemBtnShadowColour;
 200
 201         case wxSYS_COLOUR_3DHIGHLIGHT:
 202         //case wxSYS_COLOUR_BTNHIGHLIGHT:
 203             return * wxWHITE;
 204 /* I think this should normally be white (JACS 8/2000)
 205
 206    Hmm, I'm quite sure it shouldn't ... (VZ 20.08.01)
 207             if (!g_systemBtnHighlightColour)
 208             {
 209                 g_systemBtnHighlightColour =
 210                     new wxColour( 0xea60 >> SHIFT,
 211                                   0xea60 >> SHIFT,
 212                                   0xea60 >> SHIFT );
 213             }
 214             return *g_systemBtnHighlightColour;
 215 */
 216
 217         case wxSYS_COLOUR_HIGHLIGHT:
 218             if (!g_systemHighlightColour)
 219             {
 220                 int red, green, blue;
 221                 if ( !GetColourFromGTKWidget(red, green, blue,
 222                                              wxGTK_BUTTON,
 223                                              GTK_STATE_SELECTED) )
 224                 {
 225                     red =
 226                     green = 0;
 227                     blue = 0x9c40;
 228                 }
 229
 230                 g_systemHighlightColour = new wxColour( red   >> SHIFT,
 231                                                         green >> SHIFT,
 232                                                         blue  >> SHIFT );
 233             }
 234             return *g_systemHighlightColour;
 235
 236         case wxSYS_COLOUR_LISTBOX:
 237             if (!g_systemListBoxColour)
 238             {
 239                 int red, green, blue;
 240                 if ( GetColourFromGTKWidget(red, green, blue,
 241                                             wxGTK_LIST,
 242                                             GTK_STATE_NORMAL,
 243                                             wxGTK_BASE) )
 244                 {
 245                     g_systemListBoxColour = new wxColour( red   >> SHIFT,
 246                                                           green >> SHIFT,
 247                                                           blue  >> SHIFT );
 248                 }
 249                 else
 250                 {
 251                     g_systemListBoxColour = new wxColour(*wxWHITE);
 252                 }
 253             }
 254             return *g_systemListBoxColour;
 255
 256         case wxSYS_COLOUR_MENUTEXT:
 257         case wxSYS_COLOUR_WINDOWTEXT:
 258         case wxSYS_COLOUR_CAPTIONTEXT:
 259         case wxSYS_COLOUR_INACTIVECAPTIONTEXT:
 260         case wxSYS_COLOUR_BTNTEXT:
 261         case wxSYS_COLOUR_INFOTEXT:
 262             if (!g_systemBtnTextColour)
 263             {
 264                 int red, green, blue;
 265                 if ( !GetColourFromGTKWidget(red, green, blue,
 266                                              wxGTK_BUTTON,
 267                                              GTK_STATE_NORMAL,
 268                                              wxGTK_FG) )
 269                 {
 270                     red =
 271                     green =
 272                     blue = 0;
 273                 }
 274
 275                 g_systemBtnTextColour = new wxColour( red   >> SHIFT,
 276                                                       green >> SHIFT,
 277                                                       blue  >> SHIFT );
 278             }
 279             return *g_systemBtnTextColour;
 280
 281             // this (as well as wxSYS_COLOUR_INFOTEXT above) is used for
 282             // tooltip windows - Robert, please change this code to use the
 283             // real GTK tooltips when/if you can (TODO)
 284         case wxSYS_COLOUR_INFOBK:
 285             return wxColour(255, 255, 225);
 286
 287         case wxSYS_COLOUR_HIGHLIGHTTEXT:
 288             if (!g_systemHighlightTextColour)
 289             {
 290                 wxColour hclr = GetColour(wxSYS_COLOUR_HIGHLIGHT);
 291                 if (hclr.Red() > 200 && hclr.Green() > 200 && hclr.Blue() > 200)
 292                     g_systemHighlightTextColour = new wxColour(*wxBLACK);
 293                 else
 294                     g_systemHighlightTextColour = new wxColour(*wxWHITE);
 295             }
 296             return *g_systemHighlightTextColour;
 297
 298         case wxSYS_COLOUR_APPWORKSPACE:
 299             return *wxWHITE;    // ?
 300
 301         case wxSYS_COLOUR_HOTLIGHT:
 302         case wxSYS_COLOUR_GRADIENTACTIVECAPTION:
 303         case wxSYS_COLOUR_GRADIENTINACTIVECAPTION:
 304         case wxSYS_COLOUR_MENUHILIGHT:
 305             // TODO
 306             return *wxBLACK;
 307
 308         case wxSYS_COLOUR_MAX:
 309         default:
 310             wxFAIL_MSG( _T("unknown system colour index") );
 311   }
 312
 313   return *wxWHITE;
 314 }
 315
 316 wxFont wxSystemSettingsNative::GetFont( wxSystemFont index )
 317 {
 318     switch (index)
 319     {
 320         case wxSYS_OEM_FIXED_FONT:
 321         case wxSYS_ANSI_FIXED_FONT:
 322         case wxSYS_SYSTEM_FIXED_FONT:
 323         {
 324             return *wxNORMAL_FONT;
 325         }
 326         case wxSYS_ANSI_VAR_FONT:
 327         case wxSYS_SYSTEM_FONT:
 328         case wxSYS_DEVICE_DEFAULT_FONT:
 329         case wxSYS_DEFAULT_GUI_FONT:
 330         {
 331             if (!g_systemFont)
 332             {
 333 #ifdef __WXGTK20__
 334                 GtkWidget *widget = gtk_button_new();
 335                 GtkStyle *def = gtk_rc_get_style( widget );
 336                 if ( !def || !def->font_desc )
 337                     def = gtk_widget_get_default_style();
 338                 if ( def && def->font_desc )
 339                 {
 340                     wxNativeFontInfo info;
 341                     info.description = def->font_desc;
 342                     g_systemFont = new wxFont(info);
 343                 }
 344                 else
 345                 {
 346                     const gchar *font_name =
 347                         _gtk_rc_context_get_default_font_name(gtk_settings_get_default());
 348                     g_systemFont = new wxFont(wxString::FromAscii(font_name));
 349                 }
 350                 gtk_widget_destroy( widget );
 351 #else
 352                 g_systemFont = new wxFont( 12, wxSWISS, wxNORMAL, wxNORMAL );
 353 #endif
 354             }
 355             return *g_systemFont;
 356         }
 357
 358         default:
 359             return wxNullFont;
 360     }
 361 }
 362
 363 int wxSystemSettingsNative::GetMetric( wxSystemMetric index )
 364 {
 365     switch (index)
 366     {
 367         case wxSYS_SCREEN_X:   return gdk_screen_width();
 368         case wxSYS_SCREEN_Y:   return gdk_screen_height();
 369         case wxSYS_HSCROLL_Y:  return 15;
 370         case wxSYS_VSCROLL_X:  return 15;
 371
 372         // VZ: is there any way to get the cursor size with GDK?
 373         case wxSYS_CURSOR_X:   return 16;
 374         case wxSYS_CURSOR_Y:   return 16;
 375         // MBN: ditto for icons
 376         case wxSYS_ICON_X:     return 32;
 377         case wxSYS_ICON_Y:     return 32;
 378         default:
 379             wxFAIL_MSG( wxT("wxSystemSettings::GetMetric not fully implemented") );
 380             return 0;
 381     }
 382 }
 383
 384 bool wxSystemSettingsNative::HasFeature(wxSystemFeature index)
 385 {
 386     switch (index)
 387     {
 388         case wxSYS_CAN_ICONIZE_FRAME:
 389             return FALSE;
 390             break;
 391         case wxSYS_CAN_DRAW_FRAME_DECORATIONS:
 392             return TRUE;
 393             break;
 394         default:
 395             return FALSE;
 396     }
 397 }