moving from https://github.com/perberos/mate-desktop-environment

1 files changed, 961 insertions, 0 deletions

diff --git a/capplets/appearance/appearance-font.c b/capplets/appearance/appearance-font.c
new file mode 100644
index 00000000..d9f4d3c2
--- /dev/null
+++ b/capplets/appearance/appearance-font.c
@@ -0,0 +1,961 @@
+/*
+ * Copyright (C) 2007 The GNOME Foundation
+ * Written by Jonathan Blandford <[email protected]>
+ *            Jens Granseuer <[email protected]>
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "appearance.h"
+
+#include <string.h>
+#include <stdarg.h>
+#include <math.h>
+
+#ifdef HAVE_XFT2
+	#include <gdk/gdkx.h>
+	#include <X11/Xft/Xft.h>
+#endif /* HAVE_XFT2 */
+
+#include <glib/gi18n.h>
+
+#include "capplet-util.h"
+#include "mateconf-property-editor.h"
+
+#define GTK_FONT_KEY           "/desktop/mate/interface/font_name"
+#define DESKTOP_FONT_KEY       "/apps/caja/preferences/desktop_font"
+
+#define MARCO_DIR "/apps/marco/general"
+#define WINDOW_TITLE_FONT_KEY MARCO_DIR "/titlebar_font"
+#define WINDOW_TITLE_USES_SYSTEM_KEY MARCO_DIR "/titlebar_uses_system_font"
+#define MONOSPACE_FONT_KEY "/desktop/mate/interface/monospace_font_name"
+#define DOCUMENT_FONT_KEY "/desktop/mate/interface/document_font_name"
+
+#ifdef HAVE_XFT2
+#define FONT_RENDER_DIR "/desktop/mate/font_rendering"
+#define FONT_ANTIALIASING_KEY FONT_RENDER_DIR "/antialiasing"
+#define FONT_HINTING_KEY      FONT_RENDER_DIR "/hinting"
+#define FONT_RGBA_ORDER_KEY   FONT_RENDER_DIR "/rgba_order"
+#define FONT_DPI_KEY          FONT_RENDER_DIR "/dpi"
+
+/* X servers sometimes lie about the screen's physical dimensions, so we cannot
+ * compute an accurate DPI value.  When this happens, the user gets fonts that
+ * are too huge or too tiny.  So, we see what the server returns:  if it reports
+ * something outside of the range [DPI_LOW_REASONABLE_VALUE,
+ * DPI_HIGH_REASONABLE_VALUE], then we assume that it is lying and we use
+ * DPI_FALLBACK instead.
+ *
+ * See get_dpi_from_mateconf_or_server() below, and also
+ * https://bugzilla.novell.com/show_bug.cgi?id=217790
+ */
+#define DPI_FALLBACK 96
+#define DPI_LOW_REASONABLE_VALUE 50
+#define DPI_HIGH_REASONABLE_VALUE 500
+#endif /* HAVE_XFT2 */
+
+static gboolean in_change = FALSE;
+static gchar* old_font = NULL;
+
+#define MAX_FONT_POINT_WITHOUT_WARNING 32
+#define MAX_FONT_SIZE_WITHOUT_WARNING MAX_FONT_POINT_WITHOUT_WARNING * 1024
+
+#ifdef HAVE_XFT2
+
+/*
+ * Code for displaying previews of font rendering with various Xft options
+ */
+
+static void sample_size_request(GtkWidget* darea, GtkRequisition* requisition)
+{
+	GdkPixbuf* pixbuf = g_object_get_data(G_OBJECT(darea), "sample-pixbuf");
+
+	requisition->width = gdk_pixbuf_get_width(pixbuf) + 2;
+	requisition->height = gdk_pixbuf_get_height(pixbuf) + 2;
+}
+
+static void sample_expose(GtkWidget* darea, GdkEventExpose* expose)
+{
+	GtkAllocation allocation;
+	GdkPixbuf* pixbuf = g_object_get_data(G_OBJECT(darea), "sample-pixbuf");
+	GdkWindow* window = gtk_widget_get_window(darea);
+	GtkStyle* style = gtk_widget_get_style(darea);
+	int width = gdk_pixbuf_get_width(pixbuf);
+	int height = gdk_pixbuf_get_height(pixbuf);
+
+	gtk_widget_get_allocation (darea, &allocation);
+
+	int x = (allocation.width - width) / 2;
+	int y = (allocation.height - height) / 2;
+
+	gdk_draw_rectangle(window, style->white_gc, TRUE, 0, 0, allocation.width, allocation.height);
+	gdk_draw_rectangle(window, style->black_gc, FALSE, 0, 0, allocation.width - 1, allocation.height - 1);
+
+	gdk_draw_pixbuf(window, NULL, pixbuf, 0, 0, x, y, width, height, GDK_RGB_DITHER_NORMAL, 0, 0);
+}
+
+typedef enum {
+	ANTIALIAS_NONE,
+	ANTIALIAS_GRAYSCALE,
+	ANTIALIAS_RGBA
+} Antialiasing;
+
+static MateConfEnumStringPair antialias_enums[] = {
+	{ANTIALIAS_NONE,      "none"},
+	{ANTIALIAS_GRAYSCALE, "grayscale"},
+	{ANTIALIAS_RGBA,      "rgba"},
+	{-1,                  NULL}
+};
+
+typedef enum {
+	HINT_NONE,
+	HINT_SLIGHT,
+	HINT_MEDIUM,
+	HINT_FULL
+} Hinting;
+
+static MateConfEnumStringPair hint_enums[] = {
+	{HINT_NONE,   "none"},
+	{HINT_SLIGHT, "slight"},
+	{HINT_MEDIUM, "medium"},
+	{HINT_FULL,   "full"},
+	{-1,          NULL}
+};
+
+typedef enum {
+	RGBA_RGB,
+	RGBA_BGR,
+	RGBA_VRGB,
+	RGBA_VBGR
+} RgbaOrder;
+
+static MateConfEnumStringPair rgba_order_enums[] = {
+	{RGBA_RGB,  "rgb" },
+	{RGBA_BGR,  "bgr" },
+	{RGBA_VRGB, "vrgb" },
+	{RGBA_VBGR, "vbgr" },
+	{-1,         NULL }
+};
+
+static XftFont* open_pattern(FcPattern* pattern, Antialiasing antialiasing, Hinting hinting)
+{
+	#ifdef FC_HINT_STYLE
+		static const int hintstyles[] = {
+			FC_HINT_NONE, FC_HINT_SLIGHT, FC_HINT_MEDIUM, FC_HINT_FULL
+		};
+	#endif /* FC_HINT_STYLE */
+
+	FcPattern* res_pattern;
+	FcResult result;
+	XftFont* font;
+
+	Display* xdisplay = gdk_x11_get_default_xdisplay();
+	int screen = gdk_x11_get_default_screen();
+
+	res_pattern = XftFontMatch(xdisplay, screen, pattern, &result);
+	
+	if (res_pattern == NULL)
+	{
+		return NULL;
+	}
+
+	FcPatternDel(res_pattern, FC_HINTING);
+	FcPatternAddBool(res_pattern, FC_HINTING, hinting != HINT_NONE);
+
+	#ifdef FC_HINT_STYLE
+		FcPatternDel(res_pattern, FC_HINT_STYLE);
+		FcPatternAddInteger(res_pattern, FC_HINT_STYLE, hintstyles[hinting]);
+	#endif /* FC_HINT_STYLE */
+
+	FcPatternDel(res_pattern, FC_ANTIALIAS);
+	FcPatternAddBool(res_pattern, FC_ANTIALIAS, antialiasing != ANTIALIAS_NONE);
+
+	FcPatternDel(res_pattern, FC_RGBA);
+	FcPatternAddInteger(res_pattern, FC_RGBA, antialiasing == ANTIALIAS_RGBA ? FC_RGBA_RGB : FC_RGBA_NONE);
+
+	FcPatternDel(res_pattern, FC_DPI);
+	FcPatternAddInteger(res_pattern, FC_DPI, 96);
+
+	font = XftFontOpenPattern(xdisplay, res_pattern);
+	
+	if (!font)
+	{
+		FcPatternDestroy(res_pattern);
+	}
+
+	return font;
+}
+
+static void setup_font_sample(GtkWidget* darea, Antialiasing antialiasing, Hinting hinting)
+{
+	const char* string1 = "abcfgop AO ";
+	const char* string2 = "abcfgop";
+
+	XftColor black, white;
+	XRenderColor rendcolor;
+
+	Display* xdisplay = gdk_x11_get_default_xdisplay();
+
+	GdkColormap* colormap = gdk_rgb_get_colormap();
+	Colormap xcolormap = GDK_COLORMAP_XCOLORMAP(colormap);
+
+	GdkVisual* visual = gdk_colormap_get_visual(colormap);
+	Visual* xvisual = GDK_VISUAL_XVISUAL(visual);
+
+	FcPattern* pattern;
+	XftFont* font1;
+	XftFont* font2;
+	XGlyphInfo extents1 = { 0 };
+	XGlyphInfo extents2 = { 0 };
+	GdkPixmap* pixmap;
+	XftDraw* draw;
+	GdkPixbuf* tmp_pixbuf;
+	GdkPixbuf* pixbuf;
+
+	int width, height;
+	int ascent, descent;
+
+	pattern = FcPatternBuild (NULL,
+		FC_FAMILY, FcTypeString, "Serif",
+		FC_SLANT, FcTypeInteger, FC_SLANT_ROMAN,
+		FC_SIZE, FcTypeDouble, 18.,
+		NULL);
+	font1 = open_pattern (pattern, antialiasing, hinting);
+	FcPatternDestroy (pattern);
+
+	pattern = FcPatternBuild (NULL,
+		FC_FAMILY, FcTypeString, "Serif",
+		FC_SLANT, FcTypeInteger, FC_SLANT_ITALIC,
+		FC_SIZE, FcTypeDouble, 20.,
+		NULL);
+	font2 = open_pattern (pattern, antialiasing, hinting);
+	FcPatternDestroy (pattern);
+
+	ascent = 0;
+	descent = 0;
+	
+	if (font1)
+	{
+		XftTextExtentsUtf8 (xdisplay, font1, (unsigned char*) string1,
+		strlen (string1), &extents1);
+		ascent = MAX (ascent, font1->ascent);
+		descent = MAX (descent, font1->descent);
+	}
+
+	if (font2)
+	{
+		XftTextExtentsUtf8 (xdisplay, font2, (unsigned char*) string2, strlen (string2), &extents2);
+		ascent = MAX (ascent, font2->ascent);
+		descent = MAX (descent, font2->descent);
+	}
+
+	width = extents1.xOff + extents2.xOff + 4;
+	height = ascent + descent + 2;
+
+	pixmap = gdk_pixmap_new (NULL, width, height, visual->depth);
+
+	draw = XftDrawCreate (xdisplay, GDK_DRAWABLE_XID (pixmap), xvisual, xcolormap);
+
+	rendcolor.red = 0;
+	rendcolor.green = 0;
+	rendcolor.blue = 0;
+	rendcolor.alpha = 0xffff;
+	
+	XftColorAllocValue(xdisplay, xvisual, xcolormap, &rendcolor, &black);
+
+	rendcolor.red = 0xffff;
+	rendcolor.green = 0xffff;
+	rendcolor.blue = 0xffff;
+	rendcolor.alpha = 0xffff;
+	
+	XftColorAllocValue(xdisplay, xvisual, xcolormap, &rendcolor, &white);
+	XftDrawRect(draw, &white, 0, 0, width, height);
+	
+	if (font1)
+	{
+		XftDrawStringUtf8(draw, &black, font1, 2, 2 + ascent, (unsigned char*) string1, strlen(string1));
+	}
+	
+	if (font2)
+	{
+		XftDrawStringUtf8(draw, &black, font2, 2 + extents1.xOff, 2 + ascent, (unsigned char*) string2, strlen(string2));
+	}
+
+	XftDrawDestroy(draw);
+
+	if (font1)
+	{
+		XftFontClose(xdisplay, font1);
+	}
+	
+	if (font2)
+	{
+		XftFontClose(xdisplay, font2);
+	}
+
+	tmp_pixbuf = gdk_pixbuf_get_from_drawable(NULL, pixmap, colormap, 0, 0, 0, 0, width, height);
+	pixbuf = gdk_pixbuf_scale_simple(tmp_pixbuf, 1 * width, 1 * height, GDK_INTERP_TILES);
+
+	g_object_unref(pixmap);
+	g_object_unref(tmp_pixbuf);
+
+	g_object_set_data_full(G_OBJECT(darea), "sample-pixbuf", pixbuf, (GDestroyNotify) g_object_unref);
+
+	g_signal_connect(darea, "size_request", G_CALLBACK(sample_size_request), NULL);
+	g_signal_connect(darea, "expose_event", G_CALLBACK(sample_expose), NULL);
+}
+
+/*
+ * Code implementing a group of radio buttons with different Xft option combinations.
+ * If one of the buttons is matched by the MateConf key, we pick it. Otherwise we
+ * show the group as inconsistent.
+ */
+static void
+font_render_get_mateconf (MateConfClient  *client,
+		       Antialiasing *antialiasing,
+		       Hinting      *hinting)
+{
+  gchar *antialias_str = mateconf_client_get_string (client, FONT_ANTIALIASING_KEY, NULL);
+  gchar *hint_str = mateconf_client_get_string (client, FONT_HINTING_KEY, NULL);
+  gint val;
+
+  val = ANTIALIAS_GRAYSCALE;
+  if (antialias_str) {
+    mateconf_string_to_enum (antialias_enums, antialias_str, &val);
+    g_free (antialias_str);
+  }
+  *antialiasing = val;
+
+  val = HINT_FULL;
+  if (hint_str) {
+    mateconf_string_to_enum (hint_enums, hint_str, &val);
+    g_free (hint_str);
+  }
+  *hinting = val;
+}
+
+typedef struct {
+  Antialiasing antialiasing;
+  Hinting hinting;
+  GtkToggleButton *radio;
+} FontPair;
+
+static GSList *font_pairs = NULL;
+
+static void
+font_render_load (MateConfClient *client)
+{
+  Antialiasing antialiasing;
+  Hinting hinting;
+  gboolean inconsistent = TRUE;
+  GSList *tmp_list;
+
+  font_render_get_mateconf (client, &antialiasing, &hinting);
+
+  in_change = TRUE;
+
+  for (tmp_list = font_pairs; tmp_list; tmp_list = tmp_list->next) {
+    FontPair *pair = tmp_list->data;
+
+    if (antialiasing == pair->antialiasing && hinting == pair->hinting) {
+      gtk_toggle_button_set_active (pair->radio, TRUE);
+      inconsistent = FALSE;
+      break;
+    }
+  }
+
+  for (tmp_list = font_pairs; tmp_list; tmp_list = tmp_list->next) {
+    FontPair *pair = tmp_list->data;
+
+    gtk_toggle_button_set_inconsistent (pair->radio, inconsistent);
+  }
+
+  in_change = FALSE;
+}
+
+static void
+font_render_changed (MateConfClient *client,
+                     guint        cnxn_id,
+                     MateConfEntry  *entry,
+                     gpointer     user_data)
+{
+  font_render_load (client);
+}
+
+static void
+font_radio_toggled (GtkToggleButton *toggle_button,
+		    FontPair        *pair)
+{
+  if (!in_change) {
+    MateConfClient *client = mateconf_client_get_default ();
+
+    mateconf_client_set_string (client, FONT_ANTIALIASING_KEY,
+			     mateconf_enum_to_string (antialias_enums, pair->antialiasing),
+			     NULL);
+    mateconf_client_set_string (client, FONT_HINTING_KEY,
+			     mateconf_enum_to_string (hint_enums, pair->hinting),
+			     NULL);
+
+    /* Restore back to the previous state until we get notification */
+    font_render_load (client);
+    g_object_unref (client);
+  }
+}
+
+static void
+setup_font_pair (GtkWidget    *radio,
+		 GtkWidget    *darea,
+		 Antialiasing  antialiasing,
+		 Hinting       hinting)
+{
+  FontPair *pair = g_new (FontPair, 1);
+
+  pair->antialiasing = antialiasing;
+  pair->hinting = hinting;
+  pair->radio = GTK_TOGGLE_BUTTON (radio);
+
+  setup_font_sample (darea, antialiasing, hinting);
+  font_pairs = g_slist_prepend (font_pairs, pair);
+
+  g_signal_connect (radio, "toggled",
+		    G_CALLBACK (font_radio_toggled), pair);
+}
+#endif /* HAVE_XFT2 */
+
+static void
+marco_titlebar_load_sensitivity (AppearanceData *data)
+{
+  gtk_widget_set_sensitive (appearance_capplet_get_widget (data, "window_title_font"),
+			    !mateconf_client_get_bool (data->client,
+						    WINDOW_TITLE_USES_SYSTEM_KEY,
+						    NULL));
+}
+
+static void
+marco_changed (MateConfClient *client,
+		  guint        cnxn_id,
+		  MateConfEntry  *entry,
+		  gpointer     user_data)
+{
+  marco_titlebar_load_sensitivity (user_data);
+}
+
+/* returns 0 if the font is safe, otherwise returns the size in points. */
+static gint
+font_dangerous (const char *font)
+{
+  PangoFontDescription *pfd;
+  gboolean retval = 0;
+
+  pfd = pango_font_description_from_string (font);
+  if (pfd == NULL)
+    /* an invalid font was passed in.  This isn't our problem. */
+    return 0;
+
+  if ((pango_font_description_get_set_fields (pfd) & PANGO_FONT_MASK_SIZE) &&
+      (pango_font_description_get_size (pfd) >= MAX_FONT_SIZE_WITHOUT_WARNING)) {
+    retval = pango_font_description_get_size (pfd)/1024;
+  }
+  pango_font_description_free (pfd);
+
+  return retval;
+}
+
+static MateConfValue *
+application_font_to_mateconf (MateConfPropertyEditor *peditor,
+			   MateConfValue          *value)
+{
+  MateConfValue *new_value;
+  const char *new_font;
+  GtkWidget *font_button;
+  gint danger_level;
+
+  font_button = GTK_WIDGET (mateconf_property_editor_get_ui_control (peditor));
+  g_return_val_if_fail (font_button != NULL, NULL);
+
+  new_value = mateconf_value_new (MATECONF_VALUE_STRING);
+  new_font = mateconf_value_get_string (value);
+  if (font_dangerous (old_font)) {
+    /* If we're already too large, we don't warn again. */
+    mateconf_value_set_string (new_value, new_font);
+    return new_value;
+  }
+
+  danger_level = font_dangerous (new_font);
+  if (danger_level) {
+    GtkWidget *warning_dialog, *apply_button;
+    const gchar *warning_label;
+    gchar *warning_label2;
+
+    warning_label = _("Font may be too large");
+
+    if (danger_level > MAX_FONT_POINT_WITHOUT_WARNING) {
+      warning_label2 = g_strdup_printf (ngettext (
+			"The font selected is %d point large, "
+			"and may make it difficult to effectively "
+			"use the computer.  It is recommended that "
+			"you select a size smaller than %d.",
+			"The font selected is %d points large, "
+			"and may make it difficult to effectively "
+			"use the computer. It is recommended that "
+			"you select a size smaller than %d.",
+			danger_level),
+			danger_level,
+			MAX_FONT_POINT_WITHOUT_WARNING);
+    } else {
+      warning_label2 = g_strdup_printf (ngettext (
+			"The font selected is %d point large, "
+			"and may make it difficult to effectively "
+			"use the computer.  It is recommended that "
+			"you select a smaller sized font.",
+			"The font selected is %d points large, "
+			"and may make it difficult to effectively "
+			"use the computer. It is recommended that "
+			"you select a smaller sized font.",
+			danger_level),
+			danger_level);
+    }
+
+    warning_dialog = gtk_message_dialog_new (NULL,
+					     GTK_DIALOG_MODAL,
+					     GTK_MESSAGE_WARNING,
+					     GTK_BUTTONS_NONE,
+					     "%s",
+					     warning_label);
+
+    gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (warning_dialog),
+					      "%s", warning_label2);
+
+    gtk_dialog_add_button (GTK_DIALOG (warning_dialog),
+			   _("Use previous font"), GTK_RESPONSE_CLOSE);
+
+    apply_button = gtk_button_new_with_label (_("Use selected font"));
+
+    gtk_button_set_image (GTK_BUTTON (apply_button), gtk_image_new_from_stock (GTK_STOCK_APPLY, GTK_ICON_SIZE_BUTTON));
+    gtk_dialog_add_action_widget (GTK_DIALOG (warning_dialog), apply_button, GTK_RESPONSE_APPLY);
+    gtk_widget_set_can_default (apply_button, TRUE);
+    gtk_widget_show (apply_button);
+
+    gtk_dialog_set_default_response (GTK_DIALOG (warning_dialog), GTK_RESPONSE_CLOSE);
+
+    g_free (warning_label2);
+
+    if (gtk_dialog_run (GTK_DIALOG (warning_dialog)) == GTK_RESPONSE_APPLY) {
+      mateconf_value_set_string (new_value, new_font);
+    } else {
+      mateconf_value_set_string (new_value, old_font);
+      gtk_font_button_set_font_name (GTK_FONT_BUTTON (font_button), old_font);
+    }
+
+    gtk_widget_destroy (warning_dialog);
+  } else {
+    mateconf_value_set_string (new_value, new_font);
+  }
+
+  return new_value;
+}
+
+static void
+application_font_changed (GtkWidget *font_button)
+{
+  const gchar *font;
+
+  font = gtk_font_button_get_font_name (GTK_FONT_BUTTON (font_button));
+  g_free (old_font);
+  old_font = g_strdup (font);
+}
+
+#ifdef HAVE_XFT2
+/*
+ * EnumGroup - a group of radio buttons tied to a string enumeration
+ *             value. We add this here because the mateconf peditor
+ *             equivalent of this is both painful to use (you have
+ *             to supply functions to convert from enums to indices)
+ *             and conceptually broken (the order of radio buttons
+ *             in a group when using Glade is not predictable.
+ */
+typedef struct
+{
+  MateConfClient *client;
+  GSList *items;
+  gchar *mateconf_key;
+  MateConfEnumStringPair *enums;
+  int default_value;
+} EnumGroup;
+
+typedef struct
+{
+  EnumGroup *group;
+  GtkToggleButton *widget;
+  int value;
+} EnumItem;
+
+static void
+enum_group_load (EnumGroup *group)
+{
+  gchar *str = mateconf_client_get_string (group->client, group->mateconf_key, NULL);
+  gint val = group->default_value;
+  GSList *tmp_list;
+
+  if (str)
+    mateconf_string_to_enum (group->enums, str, &val);
+
+  g_free (str);
+
+  in_change = TRUE;
+
+  for (tmp_list = group->items; tmp_list; tmp_list = tmp_list->next) {
+    EnumItem *item = tmp_list->data;
+
+    if (val == item->value)
+      gtk_toggle_button_set_active (item->widget, TRUE);
+  }
+
+  in_change = FALSE;
+}
+
+static void
+enum_group_changed (MateConfClient *client,
+		    guint        cnxn_id,
+		    MateConfEntry  *entry,
+		    gpointer     user_data)
+{
+  enum_group_load (user_data);
+}
+
+static void
+enum_item_toggled (GtkToggleButton *toggle_button,
+		   EnumItem        *item)
+{
+  EnumGroup *group = item->group;
+
+  if (!in_change) {
+    mateconf_client_set_string (group->client, group->mateconf_key,
+			     mateconf_enum_to_string (group->enums, item->value),
+			     NULL);
+  }
+
+  /* Restore back to the previous state until we get notification */
+  enum_group_load (group);
+}
+
+static EnumGroup *
+enum_group_create (const gchar         *mateconf_key,
+		   MateConfEnumStringPair *enums,
+		   int                  default_value,
+		   GtkWidget           *first_widget,
+		   ...)
+{
+  EnumGroup *group;
+  GtkWidget *widget;
+  va_list args;
+
+  group = g_new (EnumGroup, 1);
+
+  group->client = mateconf_client_get_default ();
+  group->mateconf_key = g_strdup (mateconf_key);
+  group->enums = enums;
+  group->default_value = default_value;
+  group->items = NULL;
+
+  va_start (args, first_widget);
+
+  widget = first_widget;
+  while (widget) {
+    EnumItem *item;
+
+    item = g_new (EnumItem, 1);
+    item->group = group;
+    item->widget = GTK_TOGGLE_BUTTON (widget);
+    item->value = va_arg (args, int);
+
+    g_signal_connect (item->widget, "toggled",
+		      G_CALLBACK (enum_item_toggled), item);
+
+    group->items = g_slist_prepend (group->items, item);
+
+    widget = va_arg (args, GtkWidget *);
+  }
+
+  va_end (args);
+
+  enum_group_load (group);
+
+  mateconf_client_notify_add (group->client, mateconf_key,
+			   enum_group_changed,
+			   group, NULL, NULL);
+
+  return group;
+}
+
+static void
+enum_group_destroy (EnumGroup *group)
+{
+  g_object_unref (group->client);
+  g_free (group->mateconf_key);
+
+  g_slist_foreach (group->items, (GFunc) g_free, NULL);
+  g_slist_free (group->items);
+
+  g_free (group);
+}
+
+static double
+dpi_from_pixels_and_mm (int pixels, int mm)
+{
+  double dpi;
+
+  if (mm >= 1)
+    dpi = pixels / (mm / 25.4);
+  else
+    dpi = 0;
+
+  return dpi;
+}
+
+static double
+get_dpi_from_x_server (void)
+{
+  GdkScreen *screen;
+  double dpi;
+
+  screen = gdk_screen_get_default ();
+  if (screen) {
+    double width_dpi, height_dpi;
+
+    width_dpi = dpi_from_pixels_and_mm (gdk_screen_get_width (screen),
+					gdk_screen_get_width_mm (screen));
+    height_dpi = dpi_from_pixels_and_mm (gdk_screen_get_height (screen),
+					 gdk_screen_get_height_mm (screen));
+
+    if (width_dpi < DPI_LOW_REASONABLE_VALUE || width_dpi > DPI_HIGH_REASONABLE_VALUE ||
+        height_dpi < DPI_LOW_REASONABLE_VALUE || height_dpi > DPI_HIGH_REASONABLE_VALUE)
+      dpi = DPI_FALLBACK;
+    else
+      dpi = (width_dpi + height_dpi) / 2.0;
+  } else {
+    /* Huh!?  No screen? */
+    dpi = DPI_FALLBACK;
+  }
+
+  return dpi;
+}
+
+/*
+ * The font rendering details dialog
+ */
+static void
+dpi_load (MateConfClient   *client,
+	  GtkSpinButton *spinner)
+{
+  MateConfValue *value;
+  gdouble dpi;
+
+  value = mateconf_client_get_without_default (client, FONT_DPI_KEY, NULL);
+
+  if (value) {
+    dpi = mateconf_value_get_float (value);
+    mateconf_value_free (value);
+  } else
+    dpi = get_dpi_from_x_server ();
+
+  if (dpi < DPI_LOW_REASONABLE_VALUE)
+    dpi = DPI_LOW_REASONABLE_VALUE;
+
+  in_change = TRUE;
+  gtk_spin_button_set_value (spinner, dpi);
+  in_change = FALSE;
+}
+
+static void
+dpi_changed (MateConfClient *client,
+	     guint        cnxn_id,
+	     MateConfEntry  *entry,
+	     gpointer     user_data)
+{
+  dpi_load (client, user_data);
+}
+
+static void
+dpi_value_changed (GtkSpinButton *spinner,
+		   MateConfClient   *client)
+{
+  /* Like any time when using a spin button with MateConf, there is
+   * a race condition here. When we change, we send the new
+   * value to MateConf, then restore to the old value until
+   * we get a response to emulate the proper model/view behavior.
+   *
+   * If the user changes the value faster than responses are
+   * received from MateConf, this may cause mildly strange effects.
+   */
+  if (!in_change) {
+    gdouble new_dpi = gtk_spin_button_get_value (spinner);
+
+    mateconf_client_set_float (client, FONT_DPI_KEY, new_dpi, NULL);
+
+    dpi_load (client, spinner);
+  }
+}
+
+static void
+cb_details_response (GtkDialog *dialog, gint response_id)
+{
+  if (response_id == GTK_RESPONSE_HELP) {
+    capplet_help (GTK_WINDOW (dialog),
+		  "goscustdesk-38");
+  } else
+    gtk_widget_hide (GTK_WIDGET (dialog));
+}
+
+static void
+cb_show_details (GtkWidget *button,
+		 AppearanceData *data)
+{
+  if (!data->font_details) {
+    GtkAdjustment *adjustment;
+    GtkWidget *widget;
+    EnumGroup *group;
+
+    data->font_details = appearance_capplet_get_widget (data, "render_details");
+
+    gtk_window_set_transient_for (GTK_WINDOW (data->font_details),
+                                  GTK_WINDOW (appearance_capplet_get_widget (data, "appearance_window")));
+
+    widget = appearance_capplet_get_widget (data, "dpi_spinner");
+
+    /* pick a sensible maximum dpi */
+    adjustment = gtk_spin_button_get_adjustment (GTK_SPIN_BUTTON (widget));
+    gtk_adjustment_set_lower (adjustment, DPI_LOW_REASONABLE_VALUE);
+    gtk_adjustment_set_upper (adjustment, DPI_HIGH_REASONABLE_VALUE);
+    gtk_adjustment_set_step_increment (adjustment, 1);
+
+    dpi_load (data->client, GTK_SPIN_BUTTON (widget));
+    g_signal_connect (widget, "value_changed",
+		      G_CALLBACK (dpi_value_changed), data->client);
+
+    mateconf_client_notify_add (data->client, FONT_DPI_KEY,
+			     dpi_changed, widget, NULL, NULL);
+
+    setup_font_sample (appearance_capplet_get_widget (data, "antialias_none_sample"),      ANTIALIAS_NONE,      HINT_FULL);
+    setup_font_sample (appearance_capplet_get_widget (data, "antialias_grayscale_sample"), ANTIALIAS_GRAYSCALE, HINT_FULL);
+    setup_font_sample (appearance_capplet_get_widget (data, "antialias_subpixel_sample"),  ANTIALIAS_RGBA,      HINT_FULL);
+
+    group = enum_group_create (
+    	FONT_ANTIALIASING_KEY, antialias_enums, ANTIALIAS_GRAYSCALE,
+	appearance_capplet_get_widget (data, "antialias_none_radio"),      ANTIALIAS_NONE,
+	appearance_capplet_get_widget (data, "antialias_grayscale_radio"), ANTIALIAS_GRAYSCALE,
+	appearance_capplet_get_widget (data, "antialias_subpixel_radio"),  ANTIALIAS_RGBA,
+	NULL);
+    data->font_groups = g_slist_prepend (data->font_groups, group);
+
+    setup_font_sample (appearance_capplet_get_widget (data, "hint_none_sample"),   ANTIALIAS_GRAYSCALE, HINT_NONE);
+    setup_font_sample (appearance_capplet_get_widget (data, "hint_slight_sample"), ANTIALIAS_GRAYSCALE, HINT_SLIGHT);
+    setup_font_sample (appearance_capplet_get_widget (data, "hint_medium_sample"), ANTIALIAS_GRAYSCALE, HINT_MEDIUM);
+    setup_font_sample (appearance_capplet_get_widget (data, "hint_full_sample"),   ANTIALIAS_GRAYSCALE, HINT_FULL);
+
+    group = enum_group_create (FONT_HINTING_KEY, hint_enums, HINT_FULL,
+                               appearance_capplet_get_widget (data, "hint_none_radio"),   HINT_NONE,
+                               appearance_capplet_get_widget (data, "hint_slight_radio"), HINT_SLIGHT,
+                               appearance_capplet_get_widget (data, "hint_medium_radio"), HINT_MEDIUM,
+                               appearance_capplet_get_widget (data, "hint_full_radio"),   HINT_FULL,
+                               NULL);
+    data->font_groups = g_slist_prepend (data->font_groups, group);
+
+    gtk_image_set_from_file (GTK_IMAGE (appearance_capplet_get_widget (data, "subpixel_rgb_image")),
+                             MATECC_PIXMAP_DIR "/subpixel-rgb.png");
+    gtk_image_set_from_file (GTK_IMAGE (appearance_capplet_get_widget (data, "subpixel_bgr_image")),
+                             MATECC_PIXMAP_DIR "/subpixel-bgr.png");
+    gtk_image_set_from_file (GTK_IMAGE (appearance_capplet_get_widget (data, "subpixel_vrgb_image")),
+                             MATECC_PIXMAP_DIR "/subpixel-vrgb.png");
+    gtk_image_set_from_file (GTK_IMAGE (appearance_capplet_get_widget (data, "subpixel_vbgr_image")),
+                             MATECC_PIXMAP_DIR "/subpixel-vbgr.png");
+
+    group = enum_group_create (FONT_RGBA_ORDER_KEY, rgba_order_enums, RGBA_RGB,
+                               appearance_capplet_get_widget (data, "subpixel_rgb_radio"),  RGBA_RGB,
+                               appearance_capplet_get_widget (data, "subpixel_bgr_radio"),  RGBA_BGR,
+                               appearance_capplet_get_widget (data, "subpixel_vrgb_radio"), RGBA_VRGB,
+                               appearance_capplet_get_widget (data, "subpixel_vbgr_radio"), RGBA_VBGR,
+                               NULL);
+    data->font_groups = g_slist_prepend (data->font_groups, group);
+
+    g_signal_connect (G_OBJECT (data->font_details),
+		      "response",
+		      G_CALLBACK (cb_details_response), NULL);
+    g_signal_connect (G_OBJECT (data->font_details),
+		      "delete_event",
+		      G_CALLBACK (gtk_true), NULL);
+  }
+
+  gtk_window_present (GTK_WINDOW (data->font_details));
+}
+#endif /* HAVE_XFT2 */
+
+void font_init(AppearanceData* data)
+{
+	GObject* peditor;
+	GtkWidget* widget;
+
+	data->font_details = NULL;
+	data->font_groups = NULL;
+
+	mateconf_client_add_dir(data->client, "/desktop/mate/interface", MATECONF_CLIENT_PRELOAD_ONELEVEL, NULL);
+	mateconf_client_add_dir(data->client, "/apps/caja/preferences", MATECONF_CLIENT_PRELOAD_ONELEVEL, NULL);
+	mateconf_client_add_dir(data->client, MARCO_DIR, MATECONF_CLIENT_PRELOAD_ONELEVEL, NULL);
+  
+	#ifdef HAVE_XFT2
+		mateconf_client_add_dir(data->client, FONT_RENDER_DIR, MATECONF_CLIENT_PRELOAD_ONELEVEL, NULL);
+	#endif /* HAVE_XFT2 */
+
+	widget = appearance_capplet_get_widget(data, "application_font");
+	peditor = mateconf_peditor_new_font(NULL, GTK_FONT_KEY, widget, "conv-from-widget-cb", application_font_to_mateconf, NULL);
+	g_signal_connect_swapped(peditor, "value-changed", G_CALLBACK (application_font_changed), widget);
+	application_font_changed(widget);
+
+	peditor = mateconf_peditor_new_font(NULL, DOCUMENT_FONT_KEY, appearance_capplet_get_widget (data, "document_font"), NULL);
+
+	peditor = mateconf_peditor_new_font(NULL, DESKTOP_FONT_KEY, appearance_capplet_get_widget (data, "desktop_font"), NULL);
+
+	peditor = mateconf_peditor_new_font(NULL, WINDOW_TITLE_FONT_KEY, appearance_capplet_get_widget (data, "window_title_font"), NULL);
+
+	peditor = mateconf_peditor_new_font(NULL, MONOSPACE_FONT_KEY, appearance_capplet_get_widget (data, "monospace_font"), NULL);
+
+	mateconf_client_notify_add (data->client, WINDOW_TITLE_USES_SYSTEM_KEY, marco_changed, data, NULL, NULL);
+
+	marco_titlebar_load_sensitivity(data);
+
+	#ifdef HAVE_XFT2
+		setup_font_pair(appearance_capplet_get_widget(data, "monochrome_radio"), appearance_capplet_get_widget (data, "monochrome_sample"), ANTIALIAS_NONE, HINT_FULL);
+		setup_font_pair(appearance_capplet_get_widget(data, "best_shapes_radio"), appearance_capplet_get_widget (data, "best_shapes_sample"), ANTIALIAS_GRAYSCALE, HINT_MEDIUM);
+		setup_font_pair(appearance_capplet_get_widget(data, "best_contrast_radio"), appearance_capplet_get_widget (data, "best_contrast_sample"), ANTIALIAS_GRAYSCALE, HINT_FULL);
+		setup_font_pair(appearance_capplet_get_widget(data, "subpixel_radio"), appearance_capplet_get_widget (data, "subpixel_sample"), ANTIALIAS_RGBA, HINT_FULL);
+
+		font_render_load (data->client);
+
+		mateconf_client_notify_add (data->client, FONT_RENDER_DIR, font_render_changed, data->client, NULL, NULL);
+
+		g_signal_connect (appearance_capplet_get_widget (data, "details_button"), "clicked", G_CALLBACK (cb_show_details), data);
+	#else /* !HAVE_XFT2 */
+		gtk_widget_hide (appearance_capplet_get_widget (data, "font_render_frame"));
+	#endif /* HAVE_XFT2 */
+}
+
+void font_shutdown(AppearanceData* data)
+{
+	g_slist_foreach(data->font_groups, (GFunc) enum_group_destroy, NULL);
+	g_slist_free(data->font_groups);
+	g_slist_foreach(font_pairs, (GFunc) g_free, NULL);
+	g_slist_free(font_pairs);
+	g_free(old_font);
+}