src/gtk1/settings.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/gtk1/settings.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Modified by: Mart Raudsepp (GetMetric)
   6 // Copyright:   (c) 1998 Robert Roebling
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 // For compilers that support precompilation, includes "wx.h".
  11 #include "wx/wxprec.h"
  12
  13 #include "wx/settings.h"
  14
  15 #ifndef WX_PRECOMP
  16     #include "wx/toplevel.h"
  17 #endif
  18
  19 #include "wx/fontutil.h"
  20
  21 #include <gdk/gdk.h>
  22 #include <gdk/gdkx.h>
  23 #include <gdk/gdkprivate.h>
  24 #include <gtk/gtk.h>
  25
  26 #include <X11/Xatom.h>
  27
  28 #define SHIFT (8*(sizeof(short int)-sizeof(char)))
  29
  30 // ----------------------------------------------------------------------------
  31 // wxSystemObjects
  32 // ----------------------------------------------------------------------------
  33
  34 struct wxSystemObjects
  35 {
  36     wxColour m_colBtnFace,
  37              m_colBtnShadow,
  38              m_colBtnHighlight,
  39              m_colHighlight,
  40              m_colHighlightText,
  41              m_colListBox,
  42              m_colBtnText,
  43              m_colMenuItemHighlight,
  44              m_colTooltip,
  45              m_colTooltipText;
  46
  47     wxFont m_fontSystem;
  48 };
  49
  50 static wxSystemObjects gs_objects;
  51
  52 // ----------------------------------------------------------------------------
  53 // wxSystemSettings implementation
  54 // ----------------------------------------------------------------------------
  55
  56 // kind of widget to use in GetColourFromGTKWidget
  57 enum wxGtkWidgetType
  58 {
  59     wxGTK_BUTTON,
  60     wxGTK_LIST,
  61     wxGTK_MENUITEM
  62 };
  63
  64 // the colour we need
  65 enum wxGtkColourType
  66 {
  67     wxGTK_FG,
  68     wxGTK_BG,
  69     wxGTK_BASE
  70 };
  71
  72 // wxSystemSettings::GetColour() helper: get the colours from a GTK+
  73 // widget style, return true if we did get them, false to use defaults
  74 static bool GetColourFromGTKWidget(int& red, int& green, int& blue,
  75                                    wxGtkWidgetType type = wxGTK_BUTTON,
  76                                    GtkStateType state = GTK_STATE_NORMAL,
  77                                    wxGtkColourType colour = wxGTK_BG)
  78 {
  79     GtkWidget *widget;
  80     switch ( type )
  81     {
  82         default:
  83             wxFAIL_MSG( wxT("unexpected GTK widget type") );
  84             // fall through
  85
  86         case wxGTK_BUTTON:
  87             widget = gtk_button_new();
  88             break;
  89
  90         case wxGTK_LIST:
  91             widget = gtk_list_new();
  92             break;
  93
  94         case wxGTK_MENUITEM:
  95             widget = gtk_menu_item_new();
  96     }
  97
  98     GtkStyle *def = gtk_rc_get_style( widget );
  99     if ( !def )
 100         def = gtk_widget_get_default_style();
 101
 102     bool ok;
 103     if ( def )
 104     {
 105         GdkColor *col;
 106         switch ( colour )
 107         {
 108             default:
 109                 wxFAIL_MSG( wxT("unexpected GTK colour type") );
 110                 // fall through
 111
 112             case wxGTK_FG:
 113                 col = def->fg;
 114                 break;
 115
 116             case wxGTK_BG:
 117                 col = def->bg;
 118                 break;
 119
 120             case wxGTK_BASE:
 121                 col = def->base;
 122                 break;
 123         }
 124
 125         red = col[state].red;
 126         green = col[state].green;
 127         blue = col[state].blue;
 128
 129         ok = true;
 130     }
 131     else
 132     {
 133         ok = false;
 134     }
 135
 136     gtk_widget_destroy( widget );
 137
 138     return ok;
 139 }
 140
 141 static void GetTooltipColors()
 142 {
 143     GtkTooltips* tooltips = gtk_tooltips_new();
 144     gtk_tooltips_force_window(tooltips);
 145     gtk_widget_ensure_style(tooltips->tip_window);
 146     GdkColor c = tooltips->tip_window->style->bg[GTK_STATE_NORMAL];
 147     gs_objects.m_colTooltip = wxColor(c.red >> SHIFT, c.green >> SHIFT, c.blue >> SHIFT);
 148     c = tooltips->tip_window->style->fg[GTK_STATE_NORMAL];
 149     gs_objects.m_colTooltipText = wxColor(c.red >> SHIFT, c.green >> SHIFT, c.blue >> SHIFT);
 150     gtk_object_sink(reinterpret_cast<GtkObject*>(tooltips));
 151 }
 152
 153 wxColour wxSystemSettingsNative::GetColour( wxSystemColour index )
 154 {
 155     switch (index)
 156     {
 157         case wxSYS_COLOUR_SCROLLBAR:
 158         case wxSYS_COLOUR_BACKGROUND:
 159         case wxSYS_COLOUR_INACTIVECAPTION:
 160         case wxSYS_COLOUR_MENU:
 161         case wxSYS_COLOUR_WINDOWFRAME:
 162         case wxSYS_COLOUR_ACTIVEBORDER:
 163         case wxSYS_COLOUR_INACTIVEBORDER:
 164         case wxSYS_COLOUR_BTNFACE:
 165         case wxSYS_COLOUR_MENUBAR:
 166         case wxSYS_COLOUR_3DLIGHT:
 167             if (!gs_objects.m_colBtnFace.IsOk())
 168             {
 169                 int red, green, blue;
 170                 if ( !GetColourFromGTKWidget(red, green, blue) )
 171                 {
 172                     red =
 173                     green = 0;
 174                     blue = 0x9c40;
 175                 }
 176
 177                 gs_objects.m_colBtnFace = wxColour( red   >> SHIFT,
 178                                                    green >> SHIFT,
 179                                                    blue  >> SHIFT );
 180             }
 181             return gs_objects.m_colBtnFace;
 182
 183         case wxSYS_COLOUR_WINDOW:
 184             return *wxWHITE;
 185
 186         case wxSYS_COLOUR_3DDKSHADOW:
 187             return *wxBLACK;
 188
 189         case wxSYS_COLOUR_GRAYTEXT:
 190         case wxSYS_COLOUR_BTNSHADOW:
 191         //case wxSYS_COLOUR_3DSHADOW:
 192             if (!gs_objects.m_colBtnShadow.IsOk())
 193             {
 194                 wxColour faceColour(GetColour(wxSYS_COLOUR_3DFACE));
 195                 gs_objects.m_colBtnShadow =
 196                    wxColour((unsigned char) (faceColour.Red() * 0.666),
 197                             (unsigned char) (faceColour.Green() * 0.666),
 198                             (unsigned char) (faceColour.Blue() * 0.666));
 199             }
 200
 201             return gs_objects.m_colBtnShadow;
 202
 203         case wxSYS_COLOUR_3DHIGHLIGHT:
 204         //case wxSYS_COLOUR_BTNHIGHLIGHT:
 205             return * wxWHITE;
 206
 207         case wxSYS_COLOUR_HIGHLIGHT:
 208             if (!gs_objects.m_colHighlight.IsOk())
 209             {
 210                 int red, green, blue;
 211                 if ( !GetColourFromGTKWidget(red, green, blue,
 212                                              wxGTK_BUTTON,
 213                                              GTK_STATE_SELECTED) )
 214                 {
 215                     red =
 216                     green = 0;
 217                     blue = 0x9c40;
 218                 }
 219
 220                 gs_objects.m_colHighlight = wxColour( red   >> SHIFT,
 221                                                         green >> SHIFT,
 222                                                         blue  >> SHIFT );
 223             }
 224             return gs_objects.m_colHighlight;
 225
 226         case wxSYS_COLOUR_LISTBOX:
 227             if (!gs_objects.m_colListBox.IsOk())
 228             {
 229                 int red, green, blue;
 230                 if ( GetColourFromGTKWidget(red, green, blue,
 231                                             wxGTK_LIST,
 232                                             GTK_STATE_NORMAL,
 233                                             wxGTK_BASE) )
 234                 {
 235                     gs_objects.m_colListBox = wxColour( red   >> SHIFT,
 236                                                           green >> SHIFT,
 237                                                           blue  >> SHIFT );
 238                 }
 239                 else
 240                 {
 241                     gs_objects.m_colListBox = wxColour(*wxWHITE);
 242                 }
 243             }
 244             return gs_objects.m_colListBox;
 245
 246         case wxSYS_COLOUR_MENUTEXT:
 247         case wxSYS_COLOUR_WINDOWTEXT:
 248         case wxSYS_COLOUR_CAPTIONTEXT:
 249         case wxSYS_COLOUR_INACTIVECAPTIONTEXT:
 250         case wxSYS_COLOUR_BTNTEXT:
 251         case wxSYS_COLOUR_LISTBOXTEXT:
 252             if (!gs_objects.m_colBtnText.IsOk())
 253             {
 254                 int red, green, blue;
 255                 if ( !GetColourFromGTKWidget(red, green, blue,
 256                                              wxGTK_BUTTON,
 257                                              GTK_STATE_NORMAL,
 258                                              wxGTK_FG) )
 259                 {
 260                     red =
 261                     green =
 262                     blue = 0;
 263                 }
 264
 265                 gs_objects.m_colBtnText = wxColour( red   >> SHIFT,
 266                                                       green >> SHIFT,
 267                                                       blue  >> SHIFT );
 268             }
 269             return gs_objects.m_colBtnText;
 270
 271         case wxSYS_COLOUR_INFOBK:
 272             if (!gs_objects.m_colTooltip.IsOk()) {
 273                 GetTooltipColors();
 274             }
 275             return gs_objects.m_colTooltip;
 276
 277         case wxSYS_COLOUR_INFOTEXT:
 278             if (!gs_objects.m_colTooltipText.IsOk()) {
 279                 GetTooltipColors();
 280             }
 281             return gs_objects.m_colTooltipText;
 282
 283         case wxSYS_COLOUR_LISTBOXHIGHLIGHTTEXT:
 284         case wxSYS_COLOUR_HIGHLIGHTTEXT:
 285             if (!gs_objects.m_colHighlightText.IsOk())
 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.IsOk())
 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.IsOk())
 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 }