src/gtk1/settings.cpp

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