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