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