src/gtk/settings.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/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
  16 #ifndef WX_PRECOMP
  17     #include "wx/cmndata.h"
  18     #include "wx/toplevel.h"
  19 #endif
  20
  21 #include "wx/fontutil.h"
  22 #include "wx/fontenum.h"
  23
  24 #include <gtk/gtk.h>
  25 #include "wx/gtk/private/win_gtk.h"
  26
  27 bool wxGetFrameExtents(GdkWindow* window, int* left, int* right, int* top, int* bottom);
  28
  29 // ----------------------------------------------------------------------------
  30 // wxSystemSettings implementation
  31 // ----------------------------------------------------------------------------
  32
  33 static wxFont gs_fontSystem;
  34
  35 static GtkContainer* ContainerWidget()
  36 {
  37     static GtkContainer* s_widget;
  38     if (s_widget == NULL)
  39     {
  40         s_widget = GTK_CONTAINER(gtk_fixed_new());
  41         GtkWidget* window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
  42         gtk_container_add(GTK_CONTAINER(window), GTK_WIDGET(s_widget));
  43     }
  44     return s_widget;
  45 }
  46
  47 extern "C" {
  48 static void style_set(GtkWidget*, GtkStyle*, void*)
  49 {
  50     gs_fontSystem = wxNullFont;
  51 }
  52 }
  53
  54 static const GtkStyle* ButtonStyle()
  55 {
  56     static GtkWidget* s_widget;
  57     if (s_widget == NULL)
  58     {
  59         s_widget = gtk_button_new();
  60         gtk_container_add(ContainerWidget(), s_widget);
  61         gtk_widget_ensure_style(s_widget);
  62         g_signal_connect(s_widget, "style_set", G_CALLBACK(style_set), NULL);
  63     }
  64     return s_widget->style;
  65 }
  66
  67 static const GtkStyle* ListStyle()
  68 {
  69     static GtkWidget* s_widget;
  70     if (s_widget == NULL)
  71     {
  72         s_widget = gtk_tree_view_new_with_model(
  73             GTK_TREE_MODEL(gtk_list_store_new(1, G_TYPE_INT)));
  74         gtk_container_add(ContainerWidget(), s_widget);
  75         gtk_widget_ensure_style(s_widget);
  76     }
  77     return s_widget->style;
  78 }
  79
  80 static const GtkStyle* TextCtrlStyle()
  81 {
  82     static GtkWidget* s_widget;
  83     if (s_widget == NULL)
  84     {
  85         s_widget = gtk_text_view_new();
  86         gtk_container_add(ContainerWidget(), s_widget);
  87         gtk_widget_ensure_style(s_widget);
  88     }
  89     return s_widget->style;
  90 }
  91
  92 static const GtkStyle* MenuItemStyle()
  93 {
  94     static GtkWidget* s_widget;
  95     if (s_widget == NULL)
  96     {
  97         s_widget = gtk_menu_item_new();
  98         gtk_container_add(ContainerWidget(), s_widget);
  99         gtk_widget_ensure_style(s_widget);
 100     }
 101     return s_widget->style;
 102 }
 103
 104 static const GtkStyle* MenuBarStyle()
 105 {
 106     static GtkWidget* s_widget;
 107     if (s_widget == NULL)
 108     {
 109         s_widget = gtk_menu_bar_new();
 110         gtk_container_add(ContainerWidget(), s_widget);
 111         gtk_widget_ensure_style(s_widget);
 112     }
 113     return s_widget->style;
 114 }
 115
 116 static const GtkStyle* ToolTipStyle()
 117 {
 118     static GtkWidget* s_widget;
 119     if (s_widget == NULL)
 120     {
 121         s_widget = gtk_window_new(GTK_WINDOW_POPUP);
 122         const char* name = "gtk-tooltip";
 123         if (gtk_check_version(2, 11, 0))
 124             name = "gtk-tooltips";
 125         gtk_widget_set_name(s_widget, name);
 126         gtk_widget_ensure_style(s_widget);
 127     }
 128     return s_widget->style;
 129 }
 130
 131 wxColour wxSystemSettingsNative::GetColour( wxSystemColour index )
 132 {
 133     wxColor color;
 134     switch (index)
 135     {
 136         case wxSYS_COLOUR_SCROLLBAR:
 137         case wxSYS_COLOUR_BACKGROUND:
 138         //case wxSYS_COLOUR_DESKTOP:
 139         case wxSYS_COLOUR_INACTIVECAPTION:
 140         case wxSYS_COLOUR_MENU:
 141         case wxSYS_COLOUR_WINDOWFRAME:
 142         case wxSYS_COLOUR_ACTIVEBORDER:
 143         case wxSYS_COLOUR_INACTIVEBORDER:
 144         case wxSYS_COLOUR_BTNFACE:
 145         //case wxSYS_COLOUR_3DFACE:
 146         case wxSYS_COLOUR_3DLIGHT:
 147             color = wxColor(ButtonStyle()->bg[GTK_STATE_NORMAL]);
 148             break;
 149
 150         case wxSYS_COLOUR_WINDOW:
 151             color = wxColor(TextCtrlStyle()->base[GTK_STATE_NORMAL]);
 152             break;
 153
 154         case wxSYS_COLOUR_MENUBAR:
 155             color = wxColor(MenuBarStyle()->bg[GTK_STATE_NORMAL]);
 156             break;
 157
 158         case wxSYS_COLOUR_3DDKSHADOW:
 159             color = *wxBLACK;
 160             break;
 161
 162         case wxSYS_COLOUR_GRAYTEXT:
 163         case wxSYS_COLOUR_BTNSHADOW:
 164         //case wxSYS_COLOUR_3DSHADOW:
 165             {
 166                 wxColour faceColour(GetColour(wxSYS_COLOUR_3DFACE));
 167                 color =
 168                    wxColour((unsigned char) (faceColour.Red() * 2 / 3),
 169                             (unsigned char) (faceColour.Green() * 2 / 3),
 170                             (unsigned char) (faceColour.Blue() * 2 / 3));
 171             }
 172             break;
 173
 174         case wxSYS_COLOUR_BTNHIGHLIGHT:
 175         //case wxSYS_COLOUR_BTNHILIGHT:
 176         //case wxSYS_COLOUR_3DHIGHLIGHT:
 177         //case wxSYS_COLOUR_3DHILIGHT:
 178             color = *wxWHITE;
 179             break;
 180
 181         case wxSYS_COLOUR_HIGHLIGHT:
 182             color = wxColor(ButtonStyle()->bg[GTK_STATE_SELECTED]);
 183             break;
 184
 185         case wxSYS_COLOUR_LISTBOX:
 186             color = wxColor(ListStyle()->base[GTK_STATE_NORMAL]);
 187             break;
 188
 189         case wxSYS_COLOUR_LISTBOXTEXT:
 190             color = wxColor(ListStyle()->text[GTK_STATE_NORMAL]);
 191             break;
 192
 193         case wxSYS_COLOUR_MENUTEXT:
 194         case wxSYS_COLOUR_WINDOWTEXT:
 195         case wxSYS_COLOUR_CAPTIONTEXT:
 196         case wxSYS_COLOUR_INACTIVECAPTIONTEXT:
 197         case wxSYS_COLOUR_BTNTEXT:
 198             color = wxColor(ButtonStyle()->fg[GTK_STATE_NORMAL]);
 199             break;
 200
 201         case wxSYS_COLOUR_INFOBK:
 202             color = wxColor(ToolTipStyle()->bg[GTK_STATE_NORMAL]);
 203             break;
 204
 205         case wxSYS_COLOUR_INFOTEXT:
 206             color = wxColor(ToolTipStyle()->fg[GTK_STATE_NORMAL]);
 207             break;
 208
 209         case wxSYS_COLOUR_HIGHLIGHTTEXT:
 210             color = wxColor(ButtonStyle()->fg[GTK_STATE_SELECTED]);
 211             break;
 212
 213         case wxSYS_COLOUR_APPWORKSPACE:
 214             color = *wxWHITE;    // ?
 215             break;
 216
 217         case wxSYS_COLOUR_ACTIVECAPTION:
 218         case wxSYS_COLOUR_MENUHILIGHT:
 219             color = wxColor(MenuItemStyle()->bg[GTK_STATE_SELECTED]);
 220             break;
 221
 222         case wxSYS_COLOUR_HOTLIGHT:
 223         case wxSYS_COLOUR_GRADIENTACTIVECAPTION:
 224         case wxSYS_COLOUR_GRADIENTINACTIVECAPTION:
 225             // TODO
 226             color = *wxBLACK;
 227             break;
 228
 229         case wxSYS_COLOUR_MAX:
 230         default:
 231             wxFAIL_MSG( wxT("unknown system colour index") );
 232             color = *wxWHITE;
 233             break;
 234     }
 235
 236     wxASSERT(color.IsOk());
 237     return color;
 238 }
 239
 240 wxFont wxSystemSettingsNative::GetFont( wxSystemFont index )
 241 {
 242     wxFont font;
 243     switch (index)
 244     {
 245         case wxSYS_OEM_FIXED_FONT:
 246         case wxSYS_ANSI_FIXED_FONT:
 247         case wxSYS_SYSTEM_FIXED_FONT:
 248             font = *wxNORMAL_FONT;
 249             break;
 250
 251         case wxSYS_ANSI_VAR_FONT:
 252         case wxSYS_SYSTEM_FONT:
 253         case wxSYS_DEVICE_DEFAULT_FONT:
 254         case wxSYS_DEFAULT_GUI_FONT:
 255             if (!gs_fontSystem.Ok())
 256             {
 257                 wxNativeFontInfo info;
 258                 info.description = ButtonStyle()->font_desc;
 259                 gs_fontSystem = wxFont(info);
 260
 261                 // (try to) heal the default font (on some common systems e.g. Ubuntu
 262                 // it's "Sans Serif" but the real font is called "Sans"):
 263                 if (!wxFontEnumerator::IsValidFacename(gs_fontSystem.GetFaceName()) &&
 264                     gs_fontSystem.GetFaceName() == "Sans Serif")
 265                     gs_fontSystem.SetFaceName("Sans");
 266
 267                 info.description = NULL;
 268             }
 269             font = gs_fontSystem;
 270             break;
 271
 272         default:
 273             break;
 274     }
 275
 276     wxASSERT(font.IsOk() && wxFontEnumerator::IsValidFacename(font.GetFaceName()));
 277
 278     return font;
 279 }
 280
 281 // helper: return the GtkSettings either for the screen the current window is
 282 // on or for the default screen if window is NULL
 283 static GtkSettings *GetSettingsForWindowScreen(GdkWindow *window)
 284 {
 285     return window ? gtk_settings_get_for_screen(gdk_drawable_get_screen(window))
 286                   : gtk_settings_get_default();
 287 }
 288
 289 static int GetBorderWidth(wxSystemMetric index, wxWindow* win)
 290 {
 291     if (win->m_wxwindow)
 292     {
 293         wxPizza* pizza = WX_PIZZA(win->m_wxwindow);
 294         int x, y;
 295         pizza->get_border_widths(x, y);
 296         switch (index)
 297         {
 298             case wxSYS_BORDER_X:
 299             case wxSYS_EDGE_X:
 300             case wxSYS_FRAMESIZE_X:
 301                 return x;
 302             default:
 303                 return y;
 304         }
 305     }
 306     return -1;
 307 }
 308
 309 int wxSystemSettingsNative::GetMetric( wxSystemMetric index, wxWindow* win )
 310 {
 311     GdkWindow *window = NULL;
 312     if(win && GTK_WIDGET_REALIZED(win->GetHandle()))
 313         window = win->GetHandle()->window;
 314
 315     switch (index)
 316     {
 317         case wxSYS_BORDER_X:
 318         case wxSYS_BORDER_Y:
 319         case wxSYS_EDGE_X:
 320         case wxSYS_EDGE_Y:
 321         case wxSYS_FRAMESIZE_X:
 322         case wxSYS_FRAMESIZE_Y:
 323             if (win)
 324             {
 325                 wxTopLevelWindow *tlw = wxDynamicCast(win, wxTopLevelWindow);
 326                 if (!tlw)
 327                     return GetBorderWidth(index, win);
 328                 else if (window)
 329                 {
 330                     // Get the frame extents from the windowmanager.
 331                     // In most cases the top extent is the titlebar, so we use the bottom extent
 332                     // for the heights.
 333                     int right, bottom;
 334                     if (wxGetFrameExtents(window, NULL, &right, NULL, &bottom))
 335                     {
 336                         switch (index)
 337                         {
 338                             case wxSYS_BORDER_X:
 339                             case wxSYS_EDGE_X:
 340                             case wxSYS_FRAMESIZE_X:
 341                                 return right; // width of right extent
 342                             default:
 343                                 return bottom; // height of bottom extent
 344                         }
 345                     }
 346                 }
 347             }
 348
 349             return -1; // no window specified
 350
 351         case wxSYS_CURSOR_X:
 352         case wxSYS_CURSOR_Y:
 353                 return gdk_display_get_default_cursor_size(
 354                             window ? gdk_drawable_get_display(window)
 355                                    : gdk_display_get_default());
 356
 357         case wxSYS_DCLICK_X:
 358         case wxSYS_DCLICK_Y:
 359             gint dclick_distance;
 360             g_object_get(GetSettingsForWindowScreen(window),
 361                             "gtk-double-click-distance", &dclick_distance, NULL);
 362
 363             return dclick_distance * 2;
 364
 365         case wxSYS_DCLICK_MSEC:
 366             gint dclick;
 367             g_object_get(GetSettingsForWindowScreen(window),
 368                             "gtk-double-click-time", &dclick, NULL);
 369             return dclick;
 370
 371         case wxSYS_DRAG_X:
 372         case wxSYS_DRAG_Y:
 373             gint drag_threshold;
 374             g_object_get(GetSettingsForWindowScreen(window),
 375                             "gtk-dnd-drag-threshold", &drag_threshold, NULL);
 376
 377             // The correct thing here would be to double the value
 378             // since that is what the API wants. But the values
 379             // are much bigger under GNOME than under Windows and
 380             // just seem to much in many cases to be useful.
 381             // drag_threshold *= 2;
 382
 383             return drag_threshold;
 384
 385         case wxSYS_ICON_X:
 386         case wxSYS_ICON_Y:
 387             return 32;
 388
 389         case wxSYS_SCREEN_X:
 390             if (window)
 391                 return gdk_screen_get_width(gdk_drawable_get_screen(window));
 392             else
 393                 return gdk_screen_width();
 394
 395         case wxSYS_SCREEN_Y:
 396             if (window)
 397                 return gdk_screen_get_height(gdk_drawable_get_screen(window));
 398             else
 399                 return gdk_screen_height();
 400
 401         case wxSYS_HSCROLL_Y:
 402         case wxSYS_VSCROLL_X:
 403             return 15;
 404
 405         case wxSYS_CAPTION_Y:
 406             if (!window)
 407                 // No realized window specified, and no implementation for that case yet.
 408                 return -1;
 409
 410             wxASSERT_MSG( wxDynamicCast(win, wxTopLevelWindow),
 411                           wxT("Asking for caption height of a non toplevel window") );
 412
 413             // Get the height of the top windowmanager border.
 414             // This is the titlebar in most cases. The titlebar might be elsewhere, and
 415             // we could check which is the thickest wm border to decide on which side the
 416             // titlebar is, but this might lead to interesting behaviours in used code.
 417             // Reconsider when we have a way to report to the user on which side it is.
 418             {
 419                 int top;
 420                 if (wxGetFrameExtents(window, NULL, NULL, &top, NULL))
 421                 {
 422                     return top; // top frame extent
 423                 }
 424             }
 425
 426             // Try a default approach without a window pointer, if possible
 427             // ...
 428
 429             return -1;
 430
 431         case wxSYS_PENWINDOWS_PRESENT:
 432             // No MS Windows for Pen computing extension available in X11 based gtk+.
 433             return 0;
 434
 435         default:
 436             return -1;   // metric is unknown
 437     }
 438 }
 439
 440 bool wxSystemSettingsNative::HasFeature(wxSystemFeature index)
 441 {
 442     switch (index)
 443     {
 444         case wxSYS_CAN_ICONIZE_FRAME:
 445             return false;
 446
 447         case wxSYS_CAN_DRAW_FRAME_DECORATIONS:
 448             return true;
 449
 450         default:
 451             return false;
 452     }
 453 }