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