Fall back to X11 system tray icons if libappindicator is not available

chrome/browser/ui/libgtk2ui/app_indicator_icon_fallback.cc

+// Copyright 2014 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.
+
+#include "chrome/browser/ui/libgtk2ui/app_indicator_icon_fallback.h"
+
+#include <gtk/gtk.h>
+
+#include "base/strings/utf_string_conversions.h"
+#include "chrome/browser/ui/libgtk2ui/app_indicator_icon_menu.h"
+#include "chrome/browser/ui/libgtk2ui/skia_utils_gtk2.h"
+#include "ui/base/models/menu_model.h"
+#include "ui/gfx/image/image_skia.h"
+
+namespace libgtk2ui {
+
+AppIndicatorIconFallback::AppIndicatorIconFallback(
+    const gfx::ImageSkia& image,
+    const base::string16& tool_tip) {
+  GdkPixbuf* pixbuf = GdkPixbufFromSkBitmap(*image.bitmap());
+  gtk_status_icon_ = gtk_status_icon_new_from_pixbuf(pixbuf);
+  g_object_unref(pixbuf);
+
+  g_signal_connect(gtk_status_icon_, "activate", G_CALLBACK(OnClickThunk),
+      this);
+  g_signal_connect(gtk_status_icon_, "popup_menu",
+      G_CALLBACK(OnContextMenuRequestedThunk), this);
+  SetToolTip(tool_tip);
+}
+
+AppIndicatorIconFallback::~AppIndicatorIconFallback() {
+  g_object_unref(gtk_status_icon_);
+}
+
+void AppIndicatorIconFallback::SetImage(const gfx::ImageSkia& image) {
+  GdkPixbuf* pixbuf = GdkPixbufFromSkBitmap(*image.bitmap());
+  gtk_status_icon_set_from_pixbuf(gtk_status_icon_, pixbuf);
+  g_object_unref(pixbuf);
+}
+
+void AppIndicatorIconFallback::SetPressedImage(const gfx::ImageSkia& image) {
+  // Ignore pressed images, since the standard on Linux is to not highlight
+  // pressed status icons.
+}
+
+void AppIndicatorIconFallback::SetToolTip(const base::string16& tool_tip) {
+  gtk_status_icon_set_tooltip_text(gtk_status_icon_,
+                                   base::UTF16ToUTF8(tool_tip).c_str());
+}
+
+void AppIndicatorIconFallback::UpdatePlatformContextMenu(ui::MenuModel* model) {
+  menu_.reset();
+  if (model)
+    menu_.reset(new AppIndicatorIconMenu(model));
+}
+
+void AppIndicatorIconFallback::RefreshPlatformContextMenu() {
+  if (menu_.get())
+    menu_->Refresh();
+}
+
+void AppIndicatorIconFallback::OnClick(
+    GtkStatusIcon* status_icon) {
+  if (delegate())
+    delegate()->OnClick();

[Elliot Glaysher, 2014/05/27 23:25:51]

To make sure I understand this, this fires when the user single clicks on the
status icon. And the ContextMenuRequested fires on right click?

[pkotwicz, 2014/05/27 23:50:12]

Yes, that's correct

+}
+
+void AppIndicatorIconFallback::OnContextMenuRequested(
+    GtkStatusIcon* status_icon,
+    guint button,
+    guint32 activate_time) {
+  if (menu_.get()) {
+    gtk_menu_popup(menu_->GetGtkMenu(),
+                   NULL,
+                   NULL,
+                   gtk_status_icon_position_menu,
+                   gtk_status_icon_,
+                   button,
+                   activate_time);
+  }
+}
+
+}  // namespace libgtk2ui