search/Tiles/WidgetFu.cs

   1 using System;
   2 using System.Runtime.InteropServices;
   3
   4 namespace Search.Tiles {
   5
   6         public static class WidgetFu {
   7
   8                 public static Gtk.Label NewLabel ()
   9                 {
  10                         Gtk.Label label = new Gtk.Label ();
  11                         label.SetAlignment (0.0f, 0.5f);
  12                         label.Selectable = true;
  13                         return label;
  14                 }
  15
  16                 public static Gtk.Label NewLabel (string text)
  17                 {
  18                         Gtk.Label label = NewLabel ();
  19                         label.Text = text;
  20                         return label;
  21                 }
  22
  23                 public static Gtk.Label NewBoldLabel (string text)
  24                 {
  25                         Gtk.Label label = NewLabel ();
  26                         label.UseMarkup = true;
  27                         label.LabelProp = "<b>" + GLib.Markup.EscapeText (text) + "</b>";
  28                         return label;
  29                 }
  30
  31                 public static Gtk.Label NewGrayLabel ()
  32                 {
  33                         Gtk.Label label = NewLabel ();
  34                         label.ModifyFg (Gtk.StateType.Normal, label.Style.Foreground (Gtk.StateType.Insensitive));
  35                         return label;
  36                 }
  37
  38                 public static Gtk.Label NewGrayLabel (string text)
  39                 {
  40                         Gtk.Label label = NewGrayLabel ();
  41                         label.Text = text;
  42                         return label;
  43                 }
  44
  45                 [DllImport ("libgtk-x11-2.0.so.0")]
  46                 private static extern void gtk_label_set_ellipsize (IntPtr label, int mode);
  47
  48                 [DllImport ("libgtk-x11-2.0.so.0")]
  49                 private static extern void gtk_label_set_max_width_chars (IntPtr label, int max_width);
  50
  51                 public static void EllipsizeLabel (Gtk.Label label)
  52                 {
  53                         gtk_label_set_ellipsize (label.Handle, 3);
  54                 }
  55
  56                 public static void EllipsizeLabel (Gtk.Label label, int maxWidth)
  57                 {
  58                         gtk_label_set_ellipsize (label.Handle, 3);
  59                         gtk_label_set_max_width_chars (label.Handle, maxWidth);
  60                 }
  61
  62                 [DllImport ("libgtk-x11-2.0.so.0")]
  63                 private static extern IntPtr gtk_icon_theme_get_default ();
  64
  65                 [DllImport ("libgtk-x11-2.0.so.0")]
  66                 private static extern IntPtr gtk_icon_theme_lookup_icon (IntPtr theme, string name, int size, int flags, IntPtr error);
  67
  68                 [DllImport ("libgtk-x11-2.0.so.0")]
  69                 private static extern int gtk_icon_info_get_base_size (IntPtr icon_info);
  70
  71                 [DllImport ("libgtk-x11-2.0.so.0")]
  72                 private static extern void gtk_icon_info_free (IntPtr icon_info);
  73
  74                 [DllImport ("libgtk-x11-2.0.so.0")]
  75                 private static extern IntPtr gtk_icon_theme_load_icon (IntPtr theme, string name, int size, int flags, IntPtr error);
  76
  77                 public static Gdk.Pixbuf LoadThemeIcon (string name, int size)
  78                 {
  79                         try {
  80                                 IntPtr info = gtk_icon_theme_lookup_icon (gtk_icon_theme_get_default (), name, size, 0, IntPtr.Zero);
  81                                 if (info == IntPtr.Zero)
  82                                         return null;
  83
  84                                 int base_size = gtk_icon_info_get_base_size (info);
  85
  86                                 // If the icon has no base size, or it would be huge
  87                                 // compared to what we asked for, scale it down.
  88                                 // 1.33334 is pretty arbitrary, roughly calculated
  89                                 // as the difference between icon sizes 48 and 64.
  90                                 if (base_size == 0 || base_size > size * 1.33334)
  91                                         base_size = size;
  92                                 gtk_icon_info_free (info);
  93
  94                                 IntPtr native = gtk_icon_theme_load_icon (gtk_icon_theme_get_default (), name, base_size, 0, IntPtr.Zero);
  95                                 if (native != IntPtr.Zero) {
  96                                         Gdk.Pixbuf ret = (Gdk.Pixbuf) GLib.Object.GetObject(native, true);
  97                                         return ret;
  98                                 }
  99                         } catch (System.Exception e) {
 100                                 System.Console.Write (e.ToString ());
 101                         }
 102                         return null;
 103                 }
 104
 105                 public static Gdk.Pixbuf LoadMimeIcon (string mimetype, int size)
 106                 {
 107                         Gtk.IconTheme icon_theme = Gtk.IconTheme.Default;
 108                         Gnome.IconLookupResultFlags result;
 109
 110                         // FIXME when ximian bug #76540 is fixed
 111                         // change "new Gnome.Vfs.FileInfo (IntPtr.Zero)" to "null"
 112                         string icon_name = Gnome.Icon.Lookup (icon_theme, null, null, null, new Gnome.Vfs.FileInfo (IntPtr.Zero), mimetype, (Gnome.IconLookupFlags) 0, out result);
 113
 114                         if (icon_name == null)
 115                                 return null;
 116
 117                         Gtk.IconInfo icon_info = icon_theme.LookupIcon (icon_name, size, 0);
 118
 119                         if (icon_info == null)
 120                                 return null;
 121                         try {
 122                                 return icon_info.LoadIcon ();
 123                         } catch (System.Exception e) {
 124                                 System.Console.Write (e.ToString ());
 125                         }
 126                         return null;
 127                 }
 128
 129                 [DllImport ("libbeagleuiglue.so")]
 130                 private static extern void ui_glue_set_drag_pixbuf_from_image (IntPtr drag_context, IntPtr image);
 131
 132                 public static void SetDragImage (Gdk.DragContext context, Gtk.Image image)
 133                 {
 134                         ui_glue_set_drag_pixbuf_from_image (context.Handle, image.Handle);
 135                 }
 136         }
 137 }