src/gtk1/settings.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/gtk1/settings.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Modified by: Mart Raudsepp (GetMetric)
   6 // Id:          $Id$
   7 // Copyright:   (c) 1998 Robert Roebling
   8 // Licence:     wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11 // For compilers that support precompilation, includes "wx.h".
  12 #include "wx/wxprec.h"
  13
  14 #include "wx/settings.h"
  15
  16 #ifndef WX_PRECOMP
  17     #include "wx/toplevel.h"
  18 #endif
  19
  20 #include "wx/fontutil.h"
  21
  22 #include <gdk/gdk.h>
  23 #include <gdk/gdkx.h>
  24 #include <gdk/gdkprivate.h>
  25 #include <gtk/gtk.h>
  26
  27 #include <X11/Xatom.h>
  28
  29 #define SHIFT (8*(sizeof(short int)-sizeof(char)))
  30
  31 // ----------------------------------------------------------------------------
  32 // wxSystemObjects
  33 // ----------------------------------------------------------------------------
  34
  35 struct wxSystemObjects
  36 {
  37     wxColour m_colBtnFace,
  38              m_colBtnShadow,
  39              m_colBtnHighlight,
  40              m_colHighlight,
  41              m_colHighlightText,
  42              m_colListBox,
  43              m_colBtnText,
  44              m_colMenuItemHighlight,
  45              m_colTooltip,
  46              m_colTooltipText;
  47
  48     wxFont m_fontSystem;
  49 };
  50
  51 static wxSystemObjects gs_objects;
  52
  53 // ----------------------------------------------------------------------------
  54 // wxSystemSettings implementation
  55 // ----------------------------------------------------------------------------
  56
  57 // kind of widget to use in GetColourFromGTKWidget
  58 enum wxGtkWidgetType
  59 {
  60     wxGTK_BUTTON,
  61     wxGTK_LIST,
  62     wxGTK_MENUITEM
  63 };
  64
  65 // the colour we need
  66 enum wxGtkColourType
  67 {
  68     wxGTK_FG,
  69     wxGTK_BG,
  70     wxGTK_BASE
  71 };
  72
  73 // wxSystemSettings::GetColour() helper: get the colours from a GTK+
  74 // widget style, return true if we did get them, false to use defaults
  75 static bool GetColourFromGTKWidget(int& red, int& green, int& blue,
  76                                    wxGtkWidgetType type = wxGTK_BUTTON,
  77                                    GtkStateType state = GTK_STATE_NORMAL,
  78                                    wxGtkColourType colour = wxGTK_BG)
  79 {
  80     GtkWidget *widget;
  81     switch ( type )
  82     {
  83         default:
  84             wxFAIL_MSG( wxT("unexpected GTK widget type") );
  85             // fall through
  86
  87         case wxGTK_BUTTON:
  88             widget = gtk_button_new();
  89             break;
  90
  91         case wxGTK_LIST:
  92             widget = gtk_list_new();
  93             break;
  94
  95         case wxGTK_MENUITEM:
  96             widget = gtk_menu_item_new();
  97     }
  98
  99     GtkStyle *def = gtk_rc_get_style( widget );
 100     if ( !def )
 101         def = gtk_widget_get_default_style();
 102
 103     bool ok;
 104     if ( def )
 105     {
 106         GdkColor *col;
 107         switch ( colour )
 108         {
 109             default:
 110                 wxFAIL_MSG( wxT("unexpected GTK colour type") );
 111                 // fall through
 112
 113             case wxGTK_FG:
 114                 col = def->fg;
 115                 break;
 116
 117             case wxGTK_BG:
 118                 col = def->bg;
 119                 break;
 120
 121             case wxGTK_BASE:
 122                 col = def->base;
 123                 break;
 124         }
 125
 126         red = col[state].red;
 127         green = col[state].green;
 128         blue = col[state].blue;
 129
 130         ok = true;
 131     }
 132     else
 133     {
 134         ok = false;
 135     }
 136
 137     gtk_widget_destroy( widget );
 138
 139     return ok;
 140 }
 141
 142 static void GetTooltipColors()
 143 {
 144     GtkTooltips* tooltips = gtk_tooltips_new();
 145     gtk_tooltips_force_window(tooltips);
 146     gtk_widget_ensure_style(tooltips->tip_window);
 147     GdkColor c = tooltips->tip_window->style->bg[GTK_STATE_NORMAL];
 148     gs_objects.m_colTooltip = wxColor(c.red >> SHIFT, c.green >> SHIFT, c.blue >> SHIFT);
 149     c = tooltips->tip_window->style->fg[GTK_STATE_NORMAL];
 150     gs_objects.m_colTooltipText = wxColor(c.red >> SHIFT, c.green >> SHIFT, c.blue >> SHIFT);
 151     gtk_object_sink(reinterpret_cast<GtkObject*>(tooltips));
 152 }
 153
 154 wxColour wxSystemSettingsNative::GetColour( wxSystemColour index )
 155 {
 156     switch (index)
 157     {
 158         case wxSYS_COLOUR_SCROLLBAR:
 159         case wxSYS_COLOUR_BACKGROUND:
 160         case wxSYS_COLOUR_INACTIVECAPTION:
 161         case wxSYS_COLOUR_MENU:
 162         case wxSYS_COLOUR_WINDOWFRAME:
 163         case wxSYS_COLOUR_ACTIVEBORDER:
 164         case wxSYS_COLOUR_INACTIVEBORDER:
 165         case wxSYS_COLOUR_BTNFACE:
 166         case wxSYS_COLOUR_MENUBAR:
 167         case wxSYS_COLOUR_3DLIGHT:
 168             if (!gs_objects.m_colBtnFace.Ok())
 169             {
 170                 int red, green, blue;
 171                 if ( !GetColourFromGTKWidget(red, green, blue) )
 172                 {
 173                     red =
 174                     green = 0;
 175                     blue = 0x9c40;
 176                 }
 177
 178                 gs_objects.m_colBtnFace = wxColour( red   >> SHIFT,
 179                                                    green >> SHIFT,
 180                                                    blue  >> SHIFT );
 181             }
 182             return gs_objects.m_colBtnFace;
 183
 184         case wxSYS_COLOUR_WINDOW:
 185             return *wxWHITE;
 186
 187         case wxSYS_COLOUR_3DDKSHADOW:
 188             return *wxBLACK;
 189
 190         case wxSYS_COLOUR_GRAYTEXT:
 191         case wxSYS_COLOUR_BTNSHADOW:
 192         //case wxSYS_COLOUR_3DSHADOW:
 193             if (!gs_objects.m_colBtnShadow.Ok())
 194             {
 195                 wxColour faceColour(GetColour(wxSYS_COLOUR_3DFACE));
 196                 gs_objects.m_colBtnShadow =
 197                    wxColour((unsigned char) (faceColour.Red() * 0.666),
 198                             (unsigned char) (faceColour.Green() * 0.666),
 199                             (unsigned char) (faceColour.Blue() * 0.666));
 200             }
 201
 202             return gs_objects.m_colBtnShadow;
 203
 204         case wxSYS_COLOUR_3DHIGHLIGHT:
 205         //case wxSYS_COLOUR_BTNHIGHLIGHT:
 206             return * wxWHITE;
 207
 208         case wxSYS_COLOUR_HIGHLIGHT:
 209             if (!gs_objects.m_colHighlight.Ok())
 210             {
 211                 int red, green, blue;
 212                 if ( !GetColourFromGTKWidget(red, green, blue,
 213                                              wxGTK_BUTTON,
 214                                              GTK_STATE_SELECTED) )
 215                 {
 216                     red =
 217                     green = 0;
 218                     blue = 0x9c40;
 219                 }
 220
 221                 gs_objects.m_colHighlight = wxColour( red   >> SHIFT,
 222                                                         green >> SHIFT,
 223                                                         blue  >> SHIFT );
 224             }
 225             return gs_objects.m_colHighlight;
 226
 227         case wxSYS_COLOUR_LISTBOX:
 228             if (!gs_objects.m_colListBox.Ok())
 229             {
 230                 int red, green, blue;
 231                 if ( GetColourFromGTKWidget(red, green, blue,
 232                                             wxGTK_LIST,
 233                                             GTK_STATE_NORMAL,
 234                                             wxGTK_BASE) )
 235                 {
 236                     gs_objects.m_colListBox = wxColour( red   >> SHIFT,
 237                                                           green >> SHIFT,
 238                                                           blue  >> SHIFT );
 239                 }
 240                 else
 241                 {
 242                     gs_objects.m_colListBox = wxColour(*wxWHITE);
 243                 }
 244             }
 245             return gs_objects.m_colListBox;
 246
 247         case wxSYS_COLOUR_MENUTEXT:
 248         case wxSYS_COLOUR_WINDOWTEXT:
 249         case wxSYS_COLOUR_CAPTIONTEXT:
 250         case wxSYS_COLOUR_INACTIVECAPTIONTEXT:
 251         case wxSYS_COLOUR_BTNTEXT:
 252         case wxSYS_COLOUR_LISTBOXTEXT:
 253             if (!gs_objects.m_colBtnText.Ok())
 254             {
 255                 int red, green, blue;
 256                 if ( !GetColourFromGTKWidget(red, green, blue,
 257                                              wxGTK_BUTTON,
 258                                              GTK_STATE_NORMAL,
 259                                              wxGTK_FG) )
 260                 {
 261                     red =
 262                     green =
 263                     blue = 0;
 264                 }
 265
 266                 gs_objects.m_colBtnText = wxColour( red   >> SHIFT,
 267                                                       green >> SHIFT,
 268                                                       blue  >> SHIFT );
 269             }
 270             return gs_objects.m_colBtnText;
 271
 272         case wxSYS_COLOUR_INFOBK:
 273             if (!gs_objects.m_colTooltip.Ok()) {
 274                 GetTooltipColors();
 275             }
 276             return gs_objects.m_colTooltip;
 277
 278         case wxSYS_COLOUR_INFOTEXT:
 279             if (!gs_objects.m_colTooltipText.Ok()) {
 280                 GetTooltipColors();
 281             }
 282             return gs_objects.m_colTooltipText;
 283
 284         case wxSYS_COLOUR_HIGHLIGHTTEXT:
 285             if (!gs_objects.m_colHighlightText.Ok())
 286             {
 287                 wxColour hclr = GetColour(wxSYS_COLOUR_HIGHLIGHT);
 288                 if (hclr.Red() > 200 && hclr.Green() > 200 && hclr.Blue() > 200)
 289                     gs_objects.m_colHighlightText = wxColour(*wxBLACK);
 290                 else
 291                     gs_objects.m_colHighlightText = wxColour(*wxWHITE);
 292             }
 293             return gs_objects.m_colHighlightText;
 294
 295         case wxSYS_COLOUR_APPWORKSPACE:
 296             return *wxWHITE;    // ?
 297
 298         case wxSYS_COLOUR_ACTIVECAPTION:
 299         case wxSYS_COLOUR_MENUHILIGHT:
 300             if (!gs_objects.m_colMenuItemHighlight.Ok())
 301             {
 302                 int red, green, blue;
 303                 if ( !GetColourFromGTKWidget(red, green, blue,
 304                                              wxGTK_MENUITEM,
 305                                              GTK_STATE_SELECTED,
 306                                              wxGTK_BG) )
 307                 {
 308                     red =
 309                     green =
 310                     blue = 0;
 311                 }
 312
 313                 gs_objects.m_colMenuItemHighlight = wxColour( red  >> SHIFT,
 314                                                               green >> SHIFT,
 315                                                               blue  >> SHIFT );
 316             }
 317             return gs_objects.m_colMenuItemHighlight;
 318
 319         case wxSYS_COLOUR_HOTLIGHT:
 320         case wxSYS_COLOUR_GRADIENTACTIVECAPTION:
 321         case wxSYS_COLOUR_GRADIENTINACTIVECAPTION:
 322             // TODO
 323             return *wxBLACK;
 324
 325         case wxSYS_COLOUR_MAX:
 326         default:
 327             wxFAIL_MSG( wxT("unknown system colour index") );
 328     }
 329
 330     return *wxWHITE;
 331 }
 332
 333 wxFont wxSystemSettingsNative::GetFont( wxSystemFont index )
 334 {
 335     switch (index)
 336     {
 337         case wxSYS_OEM_FIXED_FONT:
 338         case wxSYS_ANSI_FIXED_FONT:
 339         case wxSYS_SYSTEM_FIXED_FONT:
 340         {
 341             return *wxNORMAL_FONT;
 342         }
 343         case wxSYS_ANSI_VAR_FONT:
 344         case wxSYS_SYSTEM_FONT:
 345         case wxSYS_DEVICE_DEFAULT_FONT:
 346         case wxSYS_DEFAULT_GUI_FONT:
 347         {
 348             if (!gs_objects.m_fontSystem.Ok())
 349             {
 350                 gs_objects.m_fontSystem = wxFont( 12, wxSWISS, wxNORMAL, wxNORMAL );
 351             }
 352             return gs_objects.m_fontSystem;
 353         }
 354
 355         default:
 356             return wxNullFont;
 357     }
 358 }
 359
 360 int
 361 wxSystemSettingsNative::GetMetric(wxSystemMetric index, wxWindow* WXUNUSED(win))
 362 {
 363     switch (index)
 364     {
 365         case wxSYS_CURSOR_X:
 366         case wxSYS_CURSOR_Y:
 367             return 16;
 368
 369         // MBN: ditto for icons
 370         case wxSYS_ICON_X:     return 32;
 371         case wxSYS_ICON_Y:     return 32;
 372
 373         case wxSYS_SCREEN_X:
 374             return gdk_screen_width();
 375
 376         case wxSYS_SCREEN_Y:
 377             return gdk_screen_height();
 378
 379         case wxSYS_HSCROLL_Y:  return 15;
 380         case wxSYS_VSCROLL_X:  return 15;
 381
 382 // a gtk1 implementation should be possible too if gtk2 efficiency/convenience functions aren't used
 383 #if 0
 384         case wxSYS_CAPTION_Y:
 385             if (!window)
 386                 // No realized window specified, and no implementation for that case yet.
 387                 return -1;
 388
 389             // Check if wm supports frame extents - we can't know the caption height if it does not.
 390 #if GTK_CHECK_VERSION(2,2,0)
 391             if (!gtk_check_version(2,2,0))
 392             {
 393                 if (!gdk_x11_screen_supports_net_wm_hint(
 394                         gdk_drawable_get_screen(window),
 395                         gdk_atom_intern("_NET_FRAME_EXTENTS", false) ) )
 396                     return -1;
 397             }
 398             else
 399 #endif
 400             {
 401                 if (!gdk_net_wm_supports(gdk_atom_intern("_NET_FRAME_EXTENTS", false)))
 402                     return -1;
 403             }
 404
 405             wxASSERT_MSG( wxDynamicCast(win, wxTopLevelWindow),
 406                           wxT("Asking for caption height of a non toplevel window") );
 407
 408             // Get the height of the top windowmanager border.
 409             // This is the titlebar in most cases. The titlebar might be elsewhere, and
 410             // we could check which is the thickest wm border to decide on which side the
 411             // titlebar is, but this might lead to interesting behaviours in used code.
 412             // Reconsider when we have a way to report to the user on which side it is.
 413
 414             Atom type;
 415             gint format;
 416             gulong nitems;
 417
 418 #if GTK_CHECK_VERSION(2,2,0)
 419             if (!gtk_check_version(2,2,0))
 420             {
 421                 gulong bytes_after;
 422                 success = (XGetWindowProperty (GDK_DISPLAY_XDISPLAY(gdk_drawable_get_display(window)),
 423                                     GDK_WINDOW_XWINDOW(window),
 424                                     gdk_x11_get_xatom_by_name_for_display (
 425                                             gdk_drawable_get_display(window),
 426                                             "_NET_FRAME_EXTENTS" ),
 427                                     0, // left, right, top, bottom, CARDINAL[4]/32
 428                                     G_MAXLONG, // size of long
 429                                     false, // do not delete property
 430                                     XA_CARDINAL, // 32 bit
 431                                     &type, &format, &nitems, &bytes_after, &data
 432                                    ) == Success);
 433             }
 434 #endif
 435             if (success)
 436             {
 437                 int caption_height = -1;
 438
 439                 if ((type == XA_CARDINAL) && (format == 32) && (nitems >= 3) && (data))
 440                 {
 441                     long *borders;
 442                     borders = (long*)data;
 443                     caption_height = borders[2]; // top frame extent
 444                 }
 445
 446                 if (data)
 447                     XFree(data);
 448
 449                 return caption_height;
 450             }
 451
 452             // Try a default approach without a window pointer, if possible
 453             // ...
 454
 455             return -1;
 456 #endif // gtk2
 457
 458         case wxSYS_PENWINDOWS_PRESENT:
 459             // No MS Windows for Pen computing extension available in X11 based gtk+.
 460             return 0;
 461
 462         default:
 463             return -1;   // metric is unknown
 464     }
 465 }
 466
 467 bool wxSystemSettingsNative::HasFeature(wxSystemFeature index)
 468 {
 469     switch (index)
 470     {
 471         case wxSYS_CAN_ICONIZE_FRAME:
 472             return false;
 473
 474         case wxSYS_CAN_DRAW_FRAME_DECORATIONS:
 475             return true;
 476
 477         default:
 478             return false;
 479     }
 480 }