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/cmndata.h"
  18     #include "wx/toplevel.h"
  19 #endif
  20
  21 #include "wx/fontutil.h"
  22
  23 #include <gdk/gdk.h>
  24 #include <gdk/gdkx.h>
  25 #include <gdk/gdkprivate.h>
  26 #include <gtk/gtk.h>
  27
  28 #include <X11/Xatom.h>
  29
  30 #define SHIFT (8*(sizeof(short int)-sizeof(char)))
  31
  32 // ----------------------------------------------------------------------------
  33 // wxSystemObjects
  34 // ----------------------------------------------------------------------------
  35
  36 struct wxSystemObjects
  37 {
  38     wxColour m_colBtnFace,
  39              m_colBtnShadow,
  40              m_colBtnHighlight,
  41              m_colHighlight,
  42              m_colHighlightText,
  43              m_colListBox,
  44              m_colBtnText,
  45              m_colMenuItemHighlight,
  46              m_colTooltip,
  47              m_colTooltipText;
  48
  49     wxFont m_fontSystem;
  50 };
  51
  52 static wxSystemObjects gs_objects;
  53
  54 // ----------------------------------------------------------------------------
  55 // wxSystemSettings implementation
  56 // ----------------------------------------------------------------------------
  57
  58 // kind of widget to use in GetColourFromGTKWidget
  59 enum wxGtkWidgetType
  60 {
  61     wxGTK_BUTTON,
  62     wxGTK_LIST,
  63     wxGTK_MENUITEM
  64 };
  65
  66 // the colour we need
  67 enum wxGtkColourType
  68 {
  69     wxGTK_FG,
  70     wxGTK_BG,
  71     wxGTK_BASE
  72 };
  73
  74 // wxSystemSettings::GetColour() helper: get the colours from a GTK+
  75 // widget style, return true if we did get them, false to use defaults
  76 static bool GetColourFromGTKWidget(int& red, int& green, int& blue,
  77                                    wxGtkWidgetType type = wxGTK_BUTTON,
  78                                    GtkStateType state = GTK_STATE_NORMAL,
  79                                    wxGtkColourType colour = wxGTK_BG)
  80 {
  81     GtkWidget *widget;
  82     switch ( type )
  83     {
  84         default:
  85             wxFAIL_MSG( _T("unexpected GTK widget type") );
  86             // fall through
  87
  88         case wxGTK_BUTTON:
  89             widget = gtk_button_new();
  90             break;
  91
  92         case wxGTK_LIST:
  93             widget = gtk_list_new();
  94             break;
  95
  96         case wxGTK_MENUITEM:
  97             widget = gtk_menu_item_new();
  98     }
  99
 100     GtkStyle *def = gtk_rc_get_style( widget );
 101     if ( !def )
 102         def = gtk_widget_get_default_style();
 103
 104     bool ok;
 105     if ( def )
 106     {
 107         GdkColor *col;
 108         switch ( colour )
 109         {
 110             default:
 111                 wxFAIL_MSG( _T("unexpected GTK colour type") );
 112                 // fall through
 113
 114             case wxGTK_FG:
 115                 col = def->fg;
 116                 break;
 117
 118             case wxGTK_BG:
 119                 col = def->bg;
 120                 break;
 121
 122             case wxGTK_BASE:
 123                 col = def->base;
 124                 break;
 125         }
 126
 127         red = col[state].red;
 128         green = col[state].green;
 129         blue = col[state].blue;
 130
 131         ok = true;
 132     }
 133     else
 134     {
 135         ok = false;
 136     }
 137
 138     gtk_widget_destroy( widget );
 139
 140     return ok;
 141 }
 142
 143 static void GetTooltipColors()
 144 {
 145     GtkTooltips* tooltips = gtk_tooltips_new();
 146     gtk_tooltips_force_window(tooltips);
 147     gtk_widget_ensure_style(tooltips->tip_window);
 148     GdkColor c = tooltips->tip_window->style->bg[GTK_STATE_NORMAL];
 149     gs_objects.m_colTooltip = wxColor(c.red >> SHIFT, c.green >> SHIFT, c.blue >> SHIFT);
 150     c = tooltips->tip_window->style->fg[GTK_STATE_NORMAL];
 151     gs_objects.m_colTooltipText = wxColor(c.red >> SHIFT, c.green >> SHIFT, c.blue >> SHIFT);
 152     gtk_object_sink(wx_reinterpret_cast(GtkObject*, tooltips));
 153 }
 154
 155 wxColour wxSystemSettingsNative::GetColour( wxSystemColour index )
 156 {
 157     switch (index)
 158     {
 159         case wxSYS_COLOUR_SCROLLBAR:
 160         case wxSYS_COLOUR_BACKGROUND:
 161         case wxSYS_COLOUR_INACTIVECAPTION:
 162         case wxSYS_COLOUR_MENU:
 163         case wxSYS_COLOUR_WINDOWFRAME:
 164         case wxSYS_COLOUR_ACTIVEBORDER:
 165         case wxSYS_COLOUR_INACTIVEBORDER:
 166         case wxSYS_COLOUR_BTNFACE:
 167         case wxSYS_COLOUR_MENUBAR:
 168         case wxSYS_COLOUR_3DLIGHT:
 169             if (!gs_objects.m_colBtnFace.Ok())
 170             {
 171                 int red, green, blue;
 172                 if ( !GetColourFromGTKWidget(red, green, blue) )
 173                 {
 174                     red =
 175                     green = 0;
 176                     blue = 0x9c40;
 177                 }
 178
 179                 gs_objects.m_colBtnFace = wxColour( red   >> SHIFT,
 180                                                    green >> SHIFT,
 181                                                    blue  >> SHIFT );
 182             }
 183             return gs_objects.m_colBtnFace;
 184
 185         case wxSYS_COLOUR_WINDOW:
 186             return *wxWHITE;
 187
 188         case wxSYS_COLOUR_3DDKSHADOW:
 189             return *wxBLACK;
 190
 191         case wxSYS_COLOUR_GRAYTEXT:
 192         case wxSYS_COLOUR_BTNSHADOW:
 193         //case wxSYS_COLOUR_3DSHADOW:
 194             if (!gs_objects.m_colBtnShadow.Ok())
 195             {
 196                 wxColour faceColour(GetColour(wxSYS_COLOUR_3DFACE));
 197                 gs_objects.m_colBtnShadow =
 198                    wxColour((unsigned char) (faceColour.Red() * 0.666),
 199                             (unsigned char) (faceColour.Green() * 0.666),
 200                             (unsigned char) (faceColour.Blue() * 0.666));
 201             }
 202
 203             return gs_objects.m_colBtnShadow;
 204
 205         case wxSYS_COLOUR_3DHIGHLIGHT:
 206         //case wxSYS_COLOUR_BTNHIGHLIGHT:
 207             return * wxWHITE;
 208
 209         case wxSYS_COLOUR_HIGHLIGHT:
 210             if (!gs_objects.m_colHighlight.Ok())
 211             {
 212                 int red, green, blue;
 213                 if ( !GetColourFromGTKWidget(red, green, blue,
 214                                              wxGTK_BUTTON,
 215                                              GTK_STATE_SELECTED) )
 216                 {
 217                     red =
 218                     green = 0;
 219                     blue = 0x9c40;
 220                 }
 221
 222                 gs_objects.m_colHighlight = wxColour( red   >> SHIFT,
 223                                                         green >> SHIFT,
 224                                                         blue  >> SHIFT );
 225             }
 226             return gs_objects.m_colHighlight;
 227
 228         case wxSYS_COLOUR_LISTBOX:
 229             if (!gs_objects.m_colListBox.Ok())
 230             {
 231                 int red, green, blue;
 232                 if ( GetColourFromGTKWidget(red, green, blue,
 233                                             wxGTK_LIST,
 234                                             GTK_STATE_NORMAL,
 235                                             wxGTK_BASE) )
 236                 {
 237                     gs_objects.m_colListBox = wxColour( red   >> SHIFT,
 238                                                           green >> SHIFT,
 239                                                           blue  >> SHIFT );
 240                 }
 241                 else
 242                 {
 243                     gs_objects.m_colListBox = wxColour(*wxWHITE);
 244                 }
 245             }
 246             return gs_objects.m_colListBox;
 247
 248         case wxSYS_COLOUR_MENUTEXT:
 249         case wxSYS_COLOUR_WINDOWTEXT:
 250         case wxSYS_COLOUR_CAPTIONTEXT:
 251         case wxSYS_COLOUR_INACTIVECAPTIONTEXT:
 252         case wxSYS_COLOUR_BTNTEXT:
 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( _T("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 wxSystemSettingsNative::GetMetric( wxSystemMetric index, wxWindow* win )
 361 {
 362     switch (index)
 363     {
 364         case wxSYS_CURSOR_X:
 365         case wxSYS_CURSOR_Y:
 366             return 16;
 367
 368         // MBN: ditto for icons
 369         case wxSYS_ICON_X:     return 32;
 370         case wxSYS_ICON_Y:     return 32;
 371
 372         case wxSYS_SCREEN_X:
 373             return gdk_screen_width();
 374
 375         case wxSYS_SCREEN_Y:
 376             return gdk_screen_height();
 377
 378         case wxSYS_HSCROLL_Y:  return 15;
 379         case wxSYS_VSCROLL_X:  return 15;
 380
 381 // a gtk1 implementation should be possible too if gtk2 efficiency/convenience functions aren't used
 382 #if 0
 383         case wxSYS_CAPTION_Y:
 384             if (!window)
 385                 // No realized window specified, and no implementation for that case yet.
 386                 return -1;
 387
 388             // Check if wm supports frame extents - we can't know the caption height if it does not.
 389 #if GTK_CHECK_VERSION(2,2,0)
 390             if (!gtk_check_version(2,2,0))
 391             {
 392                 if (!gdk_x11_screen_supports_net_wm_hint(
 393                         gdk_drawable_get_screen(window),
 394                         gdk_atom_intern("_NET_FRAME_EXTENTS", false) ) )
 395                     return -1;
 396             }
 397             else
 398 #endif
 399             {
 400                 if (!gdk_net_wm_supports(gdk_atom_intern("_NET_FRAME_EXTENTS", false)))
 401                     return -1;
 402             }
 403
 404             wxASSERT_MSG( wxDynamicCast(win, wxTopLevelWindow),
 405                           wxT("Asking for caption height of a non toplevel window") );
 406
 407             // Get the height of the top windowmanager border.
 408             // This is the titlebar in most cases. The titlebar might be elsewhere, and
 409             // we could check which is the thickest wm border to decide on which side the
 410             // titlebar is, but this might lead to interesting behaviours in used code.
 411             // Reconsider when we have a way to report to the user on which side it is.
 412
 413             Atom type;
 414             gint format;
 415             gulong nitems;
 416
 417 #if GTK_CHECK_VERSION(2,2,0)
 418             if (!gtk_check_version(2,2,0))
 419             {
 420                 gulong bytes_after;
 421                 success = (XGetWindowProperty (GDK_DISPLAY_XDISPLAY(gdk_drawable_get_display(window)),
 422                                     GDK_WINDOW_XWINDOW(window),
 423                                     gdk_x11_get_xatom_by_name_for_display (
 424                                             gdk_drawable_get_display(window),
 425                                             "_NET_FRAME_EXTENTS" ),
 426                                     0, // left, right, top, bottom, CARDINAL[4]/32
 427                                     G_MAXLONG, // size of long
 428                                     false, // do not delete property
 429                                     XA_CARDINAL, // 32 bit
 430                                     &type, &format, &nitems, &bytes_after, &data
 431                                    ) == Success);
 432             }
 433 #endif
 434             if (success)
 435             {
 436                 int caption_height = -1;
 437
 438                 if ((type == XA_CARDINAL) && (format == 32) && (nitems >= 3) && (data))
 439                 {
 440                     long *borders;
 441                     borders = (long*)data;
 442                     caption_height = borders[2]; // top frame extent
 443                 }
 444
 445                 if (data)
 446                     XFree(data);
 447
 448                 return caption_height;
 449             }
 450
 451             // Try a default approach without a window pointer, if possible
 452             // ...
 453
 454             return -1;
 455 #endif // gtk2
 456
 457         case wxSYS_PENWINDOWS_PRESENT:
 458             // No MS Windows for Pen computing extension available in X11 based gtk+.
 459             return 0;
 460
 461         default:
 462             return -1;   // metric is unknown
 463     }
 464 }
 465
 466 bool wxSystemSettingsNative::HasFeature(wxSystemFeature index)
 467 {
 468     switch (index)
 469     {
 470         case wxSYS_CAN_ICONIZE_FRAME:
 471             return false;
 472
 473         case wxSYS_CAN_DRAW_FRAME_DECORATIONS:
 474             return true;
 475
 476         default:
 477             return false;
 478     }
 479 }