Make system tray icons not show up as blurry on KDE

chrome/browser/ui/libgtk2ui/app_indicator_icon.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_UI_LIBGTK2UI_APP_INDICATOR_ICON_H_
 #define CHROME_BROWSER_UI_LIBGTK2UI_APP_INDICATOR_ICON_H_
 
 #include "base/files/file_path.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "chrome/browser/ui/libgtk2ui/gtk2_signal.h"
 #include "ui/views/linux_ui/status_icon_linux.h"
 
 typedef struct _AppIndicator AppIndicator;
 typedef struct _GtkWidget GtkWidget;
 
+class SkBitmap;
+
 namespace gfx {
 class ImageSkia;
 }
 
 namespace ui {
 class MenuModel;
 }
 
 namespace libgtk2ui {
 class AppIndicatorIconMenu;
@@ skipping 11 matching lines @@
   // Indicates whether libappindicator so could be opened.
   static bool CouldOpen();
 
   // Overridden from views::StatusIconLinux:
   void SetImage(const gfx::ImageSkia& image) override;
   void SetToolTip(const base::string16& tool_tip) override;
   void UpdatePlatformContextMenu(ui::MenuModel* menu) override;
   void RefreshPlatformContextMenu() override;
 
  private:
-  void SetImageFromFile(const base::FilePath& icon_file_path);
+  struct SetImageFromFileParams {
+    // The temporary directory in which the icon(s) were written.
+    base::FilePath parent_temp_dir;
+
+    // The icon theme path to pass to libappindicator.
+    std::string icon_theme_path;
+
+    // The icon name to pass to libappindicator.
+    std::string icon_name;
+  };
+
+  // Writes |bitmap| to a temporary directory on a worker thread. The temporary
+  // directory is selected based on KDE's quirks.
+  static SetImageFromFileParams WriteKDE4TempImageOnWorkerThread(
+      const SkBitmap& bitmap,
+      const base::FilePath& existing_temp_dir);
+
+  // Writes |bitmap| to a temporary directory on a worker thread. The temporary
+  // directory is selected based on Unity's quirks.
+  static SetImageFromFileParams WriteUnityTempImageOnWorkerThread(
+      const SkBitmap& bitmap,
+      int icon_change_count,
+      const std::string& id);
+
+  void SetImageFromFile(const SetImageFromFileParams& params);
   void SetMenu();
 
   // Sets a menu item at the top of the menu as a replacement for the status
   // icon click action. Clicking on this menu item should simulate a status icon
   // click by despatching a click event.
   void UpdateClickActionReplacementMenuItem();
 
   // Callback for when the status icon click replacement menu item is activated.
   void OnClickActionReplacementMenuItemActivated();
 
   std::string id_;
   std::string tool_tip_;
 
   // Whether the user is using KDE.
   bool using_kde4_;
 
   // Gtk status icon wrapper
   AppIndicator* icon_;
 
   scoped_ptr<AppIndicatorIconMenu> menu_;
   ui::MenuModel* menu_model_;
 
-  base::FilePath icon_file_path_;
+  base::FilePath temp_dir_;
   int icon_change_count_;
 
   base::WeakPtrFactory<AppIndicatorIcon> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(AppIndicatorIcon);
 };
 
 }  // namespace libgtk2ui
 
 #endif  // CHROME_BROWSER_UI_LIBGTK2UI_APP_INDICATOR_ICON_H_