Use gtk to detect dpi.

lib/python/_sugar.defs

@@ -199,11 +199,4 @@
   )
 )
 
-;; From sugar-utils.h
-
-(define-function get_screen_dpi
-  (c-name "sugar_get_screen_dpi")
-  (return-type "gint")
-)
-
 (include "gtkmozembed.defs")

lib/src/Makefile.am

@@ -37,9 +37,7 @@ libsugarprivate_la_SOURCES =		\
 	sugar-download.h		\
 	sugar-download.c		\
 	sugar-download-manager.h	\
-	sugar-download-manager.c	\
+	sugar-download-manager.c
-	sugar-utils.c			\
-	sugar-utils.h
 
 BUILT_SOURCES = 		\
 	sugar-marshal.c		\

lib/src/sugar-utils.c

@@ -1,89 +0,0 @@
-/*
- * Copyright (C) 2006, Red Hat, Inc.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library 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
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
- */
-
-#include <stdlib.h>
-#include <gdk/gdkx.h>
-#include <gdk/gdkscreen.h>
-#include <gtk/gtksettings.h>
-
-#include "sugar-utils.h"
-
-/* Ported from mozilla nsDeviceContextGTK.cpp */
-
-static gint
-get_gtk_settings_dpi(void)
-{
-    GtkSettings *settings = gtk_settings_get_default();
-    GParamSpec *spec;
-    gint dpi = 0;
-
-    spec = g_object_class_find_property(
-        G_OBJECT_GET_CLASS(G_OBJECT(settings)), "gtk-xft-dpi");
-
-    if (spec) {
-        g_object_get(G_OBJECT(settings),
-                     "gtk-xft-dpi", &dpi,
-                     NULL);
-    }
-
-    return (int)(dpi / 1024.0 + 0.5);
-}
-
-static gint
-get_xft_dpi(void)
-{
-    char *val = XGetDefault(GDK_DISPLAY(), "Xft", "dpi");
-    if (val) {
-        char *e;
-        double d = strtod(val, &e);
-
-        if (e != val)
-            return (int)(d + 0.5);
-    }
-
-    return 0;
-}
-
-static int
-get_dpi_from_physical_resolution(void)
-{
-    float screen_width_in;
-
-    screen_width_in = (float)(gdk_screen_width_mm()) / 25.4f;
-
-    return (int)((float)(gdk_screen_width()) / screen_width_in + 0.5);
-}
-
-gint
-sugar_get_screen_dpi(void)
-{
-    int dpi;
-
-    dpi = get_gtk_settings_dpi();
-
-    if (dpi == 0) {
-        dpi = get_xft_dpi();
-    }
-
-    if (dpi == 0) {
-        dpi = get_dpi_from_physical_resolution();
-    }
-
-    return dpi;
-}

lib/src/sugar-utils.h

@@ -1,31 +0,0 @@
-/*
- * Copyright (C) 2006, Red Hat, Inc.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library 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
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
- */
-
-#ifndef __SUGAR_UTILS_H__
-#define __SUGAR_UTILS_H__
-
-#include <glib.h>
-
-G_BEGIN_DECLS
-
-gint sugar_get_screen_dpi (void);
-
-G_END_DECLS
-
-#endif /* __SUGAR_UTILS_H__ */

sugar-emulator

@@ -88,7 +88,8 @@ else:
     width = 1200
     height = 900
 
-_start_xephyr(width, height, min(_sugar.get_screen_dpi(), 96))
+_gtk_xft_dpi = float(gtk.settings_get_default().get_property('gtk-xft-dpi'))
+_start_xephyr(width, height, _gtk_xft_dpi / 1024)
 
 os.environ['GTK2_RC_FILES'] = env.get_data_path('gtkrc')
 

sugar/activity/activity.py

@@ -32,11 +32,6 @@ class Activity(Window, gtk.Container):
     def __init__(self, handle):
         Window.__init__(self)
 
-        # FIXME: This will work only for activities in python. We need a xsetting.
-        display = gtk.gdk.display_manager_get().get_default_display()
-        screen = display.get_default_screen()
-        screen.set_resolution(_sugar.get_screen_dpi())
-
         self.connect('destroy', self._destroy_cb)
 
         self._shared = False

sugar/graphics/units.py

@@ -61,19 +61,18 @@ units to device units.
 
 import gtk
 
-import _sugar
-
 _MAX_ZOOM_FACTOR = 2.0
 _ZOOM_CONSTANT   = 650.0
 
 def _compute_zoom_factor():
     screen_width = gtk.gdk.screen_width()
-    if _sugar.get_screen_dpi() == 201.0 and screen_width == 1200:
+    if _screen_dpi == 201.0 and screen_width == 1200:
         return 1.0
     else:
         return min(_MAX_ZOOM_FACTOR, screen_width / _ZOOM_CONSTANT)
 
-_screen_dpi = float(_sugar.get_screen_dpi())
+_gtk_xft_dpi = gtk.settings_get_default().get_property('gtk-xft-dpi')
+_screen_dpi = float(_gtk_xft_dpi / 1024)
 _dpi_factor  = _screen_dpi / 201.0
 _zoom_factor = _compute_zoom_factor()