static GdkPixbuf *
gimp_view_renderer_imagefile_get_icon (GimpImagefile *imagefile,
                                       GtkWidget     *widget,
                                       gint           size)
{
  GdkScreen     *screen     = gtk_widget_get_screen (widget);
  GtkIconTheme  *icon_theme = gtk_icon_theme_get_for_screen (screen);
  GimpThumbnail *thumbnail  = gimp_imagefile_get_thumbnail (imagefile);
  GdkPixbuf     *pixbuf     = NULL;

  if (! gimp_object_get_name (imagefile))
    return NULL;

  if (! pixbuf)
    {
      GFile     *file;
      GFileInfo *file_info;

      file = g_file_new_for_uri (gimp_object_get_name (imagefile));
      file_info = g_file_query_info (file, "standard::icon", 0, NULL, NULL);

      if (file_info)
        {
          GIcon *icon = g_file_info_get_icon (file_info);

          if (icon)
            {
              GtkIconInfo *info;

              info = gtk_icon_theme_lookup_by_gicon (icon_theme, icon, size, 0);

              if (info)
                pixbuf = gtk_icon_info_load_icon (info, NULL);
            }
          else
            {
#ifdef GIMP_UNSTABLE
              g_printerr ("no icon for: %s\n",
                          gimp_object_get_name (imagefile));
#endif
            }

          g_object_unref (file_info);
        }

      g_object_unref (file);
    }

  if (! pixbuf && thumbnail->image_mimetype)
    {
      pixbuf = get_icon_for_mime_type (thumbnail->image_mimetype,
                                       size);
    }

  if (! pixbuf)
    {
      const gchar *icon_name = GTK_STOCK_FILE;

      if (thumbnail->image_state == GIMP_THUMB_STATE_FOLDER)
        icon_name = GTK_STOCK_DIRECTORY;

      pixbuf = gtk_icon_theme_load_icon (icon_theme,
                                         icon_name, size,
                                         GTK_ICON_LOOKUP_USE_BUILTIN,
                                         NULL);
    }

  return pixbuf;
}
示例#2
0
static CoglHandle
cinnamon_app_create_faded_icon_cpu (StTextureCache *cache,
                                 const char     *key,
                                 void           *datap,
                                 GError        **error)
{
  CreateFadedIconData *data = datap;
  CinnamonApp *app;
  GdkPixbuf *pixbuf;
  int size;
  int scale;
  CoglHandle texture;
  gint width, height, rowstride;
  guint8 n_channels;
  gboolean have_alpha;
  gint fade_start;
  gint fade_range;
  guint i, j;
  guint pixbuf_byte_size;
  guint8 *orig_pixels;
  guint8 *pixels;
  GIcon *icon;
  GtkIconInfo *info;

  app = data->app;
  size = data->size;
  scale = data->scale;

  info = NULL;

  icon = g_app_info_get_icon (G_APP_INFO (gmenu_tree_entry_get_app_info (app->entry)));
  if (icon != NULL)
    {
      info = gtk_icon_theme_lookup_by_gicon_for_scale (gtk_icon_theme_get_default (),
                                                       icon, size, scale,
                                                       GTK_ICON_LOOKUP_FORCE_SIZE);
    }

  if (info == NULL)
    {
      icon = g_themed_icon_new ("application-x-executable");
      info = gtk_icon_theme_lookup_by_gicon_for_scale (gtk_icon_theme_get_default (),
                                                       icon, size, scale,
                                                       GTK_ICON_LOOKUP_FORCE_SIZE);
      g_object_unref (icon);
    }

  if (info == NULL)
    return COGL_INVALID_HANDLE;

  pixbuf = gtk_icon_info_load_icon (info, NULL);
  g_object_unref (info);

  if (pixbuf == NULL)
    return COGL_INVALID_HANDLE;

  width = gdk_pixbuf_get_width (pixbuf);
  height = gdk_pixbuf_get_height (pixbuf);
  rowstride = gdk_pixbuf_get_rowstride (pixbuf);
  n_channels = gdk_pixbuf_get_n_channels (pixbuf);
  orig_pixels = gdk_pixbuf_get_pixels (pixbuf);
  have_alpha = gdk_pixbuf_get_has_alpha (pixbuf);

  pixbuf_byte_size = (height - 1) * rowstride +
    + width * ((n_channels * gdk_pixbuf_get_bits_per_sample (pixbuf) + 7) / 8);

  pixels = g_malloc0 (rowstride * height);
  memcpy (pixels, orig_pixels, pixbuf_byte_size);

  fade_start = width / 2;
  fade_range = width - fade_start;
  for (i = fade_start; i < width; i++)
    {
      for (j = 0; j < height; j++)
        {
          guchar *pixel = &pixels[j * rowstride + i * n_channels];
          float fade = 1.0 - ((float) i - fade_start) / fade_range;
          pixel[0] = 0.5 + pixel[0] * fade;
          pixel[1] = 0.5 + pixel[1] * fade;
          pixel[2] = 0.5 + pixel[2] * fade;
          if (have_alpha)
            pixel[3] = 0.5 + pixel[3] * fade;
        }
    }

    texture = st_cogl_texture_new_from_data_wrapper (width, height,
                                                     COGL_TEXTURE_NONE,
                                                     have_alpha ? COGL_PIXEL_FORMAT_RGBA_8888 : COGL_PIXEL_FORMAT_RGB_888,
                                                     COGL_PIXEL_FORMAT_ANY,
                                                     rowstride, pixels);

  g_free (pixels);
  g_object_unref (pixbuf);

  return texture;
}
示例#3
0
nsresult
nsIconChannel::InitWithGIO(nsIMozIconURI* aIconURI)
{
  GIcon *icon = nullptr;
  nsCOMPtr<nsIURL> fileURI;

  // Read icon content
  aIconURI->GetIconURL(getter_AddRefs(fileURI));

  // Get icon for file specified by URI
  if (fileURI) {
    bool isFile;
    nsAutoCString spec;
    fileURI->GetAsciiSpec(spec);
    if (NS_SUCCEEDED(fileURI->SchemeIs("file", &isFile)) && isFile) {
      GFile* file = g_file_new_for_uri(spec.get());
      GFileInfo* fileInfo = g_file_query_info(file,
                                              G_FILE_ATTRIBUTE_STANDARD_ICON,
                                              G_FILE_QUERY_INFO_NONE,
                                              nullptr, nullptr);
      g_object_unref(file);
      if (fileInfo) {
        // icon from g_content_type_get_icon doesn't need unref
        icon = g_file_info_get_icon(fileInfo);
        if (icon) {
          g_object_ref(icon);
        }
        g_object_unref(fileInfo);
      }
    }
  }

  // Try to get icon by using MIME type
  if (!icon) {
    nsAutoCString type;
    aIconURI->GetContentType(type);
    // Try to get MIME type from file extension by using nsIMIMEService
    if (type.IsEmpty()) {
      nsCOMPtr<nsIMIMEService> ms(do_GetService("@mozilla.org/mime;1"));
      if (ms) {
        nsAutoCString fileExt;
        aIconURI->GetFileExtension(fileExt);
        ms->GetTypeFromExtension(fileExt, type);
      }
    }
    char* ctype = nullptr; // character representation of content type
    if (!type.IsEmpty()) {
      ctype = g_content_type_from_mime_type(type.get());
    }
    if (ctype) {
      icon = g_content_type_get_icon(ctype);
      g_free(ctype);
    }
  }

  // Get default icon theme
  GtkIconTheme* iconTheme = gtk_icon_theme_get_default();
  GtkIconInfo* iconInfo = nullptr;
  // Get icon size
  int32_t iconSize = GetIconSize(aIconURI);

  if (icon) {
    // Use icon and theme to get GtkIconInfo
    iconInfo = gtk_icon_theme_lookup_by_gicon(iconTheme,
                                              icon, iconSize,
                                              (GtkIconLookupFlags)0);
    g_object_unref(icon);
  }

  if (!iconInfo) {
    // Mozilla's mimetype lookup failed. Try the "unknown" icon.
    iconInfo = gtk_icon_theme_lookup_icon(iconTheme,
                                          "unknown", iconSize,
                                          (GtkIconLookupFlags)0);
    if (!iconInfo) {
      return NS_ERROR_NOT_AVAILABLE;
    }
  }

  // Create a GdkPixbuf buffer containing icon and scale it
  GdkPixbuf* buf = gtk_icon_info_load_icon(iconInfo, nullptr);
  gtk_icon_info_free(iconInfo);
  if (!buf) {
    return NS_ERROR_UNEXPECTED;
  }

  nsresult rv = ScaleIconBuf(&buf, iconSize);
  NS_ENSURE_SUCCESS(rv, rv);

  rv = moz_gdk_pixbuf_to_channel(buf, aIconURI,
                                 getter_AddRefs(mRealChannel));
  g_object_unref(buf);
  return rv;
}
NautilusIconInfo *
nautilus_icon_info_lookup (GIcon *icon,
			   int size)
{
	NautilusIconInfo *icon_info;
	GdkPixbuf *pixbuf;
	
	if (G_IS_LOADABLE_ICON (icon)) {
		LoadableIconKey lookup_key;
		LoadableIconKey *key;
		GInputStream *stream;
		
		if (loadable_icon_cache == NULL) {
			loadable_icon_cache =
				g_hash_table_new_full ((GHashFunc)loadable_icon_key_hash,
						       (GEqualFunc)loadable_icon_key_equal,
						       (GDestroyNotify) loadable_icon_key_free,
						       (GDestroyNotify) g_object_unref);
		}
		
		lookup_key.icon = icon;
		lookup_key.size = size;

		icon_info = g_hash_table_lookup (loadable_icon_cache, &lookup_key);
		if (icon_info) {
			return g_object_ref (icon_info);
		}

		pixbuf = NULL;
		stream = g_loadable_icon_load (G_LOADABLE_ICON (icon),
					       size,
					       NULL, NULL, NULL);
		if (stream) {
			pixbuf = eel_gdk_pixbuf_load_from_stream_at_size (stream, size);
			g_object_unref (stream);
		}

		icon_info = nautilus_icon_info_new_for_pixbuf (pixbuf);

		key = loadable_icon_key_new (icon, size);
		g_hash_table_insert (loadable_icon_cache, key, icon_info);

		return g_object_ref (icon_info);
	} else if (G_IS_THEMED_ICON (icon)) {
		const char * const *names;
		ThemedIconKey lookup_key;
		ThemedIconKey *key;
		GtkIconTheme *icon_theme;
		GtkIconInfo *gtkicon_info;
		const char *filename;

		if (themed_icon_cache == NULL) {
			themed_icon_cache =
				g_hash_table_new_full ((GHashFunc)themed_icon_key_hash,
						       (GEqualFunc)themed_icon_key_equal,
						       (GDestroyNotify) themed_icon_key_free,
						       (GDestroyNotify) g_object_unref);
		}
		
		names = g_themed_icon_get_names (G_THEMED_ICON (icon));

		icon_theme = gtk_icon_theme_get_default ();
		gtkicon_info = gtk_icon_theme_choose_icon (icon_theme, (const char **)names, size, 0);

		if (gtkicon_info == NULL) {
			return nautilus_icon_info_new_for_pixbuf (NULL);
		}

		filename = gtk_icon_info_get_filename (gtkicon_info);

		lookup_key.filename = (char *)filename;
		lookup_key.size = size;

		icon_info = g_hash_table_lookup (themed_icon_cache, &lookup_key);
		if (icon_info) {
			gtk_icon_info_free (gtkicon_info);
			return g_object_ref (icon_info);
		}
		
		icon_info = nautilus_icon_info_new_for_icon_info (gtkicon_info);
		
		key = themed_icon_key_new (filename, size);
		g_hash_table_insert (themed_icon_cache, key, icon_info);

		gtk_icon_info_free (gtkicon_info);

		return g_object_ref (icon_info);
	} else {
                GdkPixbuf *pixbuf;
                GtkIconInfo *gtk_icon_info;

                gtk_icon_info = gtk_icon_theme_lookup_by_gicon (gtk_icon_theme_get_default (),
                                                                icon,
                                                                size,
                                                                GTK_ICON_LOOKUP_GENERIC_FALLBACK);
                if (gtk_icon_info != NULL) {
                        pixbuf = gtk_icon_info_load_icon (gtk_icon_info, NULL);
                        gtk_icon_info_free (gtk_icon_info);
                } else {
                        pixbuf = NULL;
                }

                return nautilus_icon_info_new_for_pixbuf (pixbuf);
        }
}