1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "chrome/browser/icon_loader.h" 6 7 #include <gdk-pixbuf/gdk-pixbuf.h> 8 #include <gio/gio.h> 9 #include <gtk/gtk.h> 10 11 #include "base/file_util.h" 12 #include "base/logging.h" 13 #include "base/message_loop.h" 14 #include "base/mime_util.h" 15 #include "base/threading/thread.h" 16 #include "base/string_util.h" 17 18 static int SizeToInt(IconLoader::IconSize size) { 19 int pixels = 48; 20 if (size == IconLoader::NORMAL) 21 pixels = 32; 22 else if (size == IconLoader::SMALL) 23 pixels = 16; 24 25 return pixels; 26 } 27 28 void IconLoader::ReadIcon() { 29 filename_ = mime_util::GetMimeIcon(group_, SizeToInt(icon_size_)); 30 file_util::ReadFileToString(filename_, &icon_data_); 31 target_message_loop_->PostTask(FROM_HERE, 32 NewRunnableMethod(this, &IconLoader::ParseIcon)); 33 } 34 35 void IconLoader::ParseIcon() { 36 int size = SizeToInt(icon_size_); 37 38 // It would be more convenient to use gdk_pixbuf_new_from_stream_at_scale 39 // but that is only available after 2.14. 40 GdkPixbufLoader* loader = gdk_pixbuf_loader_new(); 41 gdk_pixbuf_loader_set_size(loader, size, size); 42 gdk_pixbuf_loader_write(loader, 43 reinterpret_cast<const guchar*>(icon_data_.data()), 44 icon_data_.length(), NULL); 45 gdk_pixbuf_loader_close(loader, NULL); 46 // At this point, the pixbuf is owned by the loader. 47 GdkPixbuf* pixbuf = gdk_pixbuf_loader_get_pixbuf(loader); 48 49 if (pixbuf) { 50 DCHECK_EQ(size, gdk_pixbuf_get_width(pixbuf)); 51 DCHECK_EQ(size, gdk_pixbuf_get_height(pixbuf)); 52 // Takes ownership of |pixbuf|. 53 g_object_ref(pixbuf); 54 image_.reset(new gfx::Image(pixbuf)); 55 } else { 56 LOG(WARNING) << "Unsupported file type or load error: " << 57 filename_.value(); 58 } 59 60 g_object_unref(loader); 61 62 NotifyDelegate(); 63 } 64
