Support high dpi icon as window icon.

atom/browser/native_window.cc

@@ -16,6 +16,7 @@
 #include "atom/browser/window_list.h"
 #include "atom/common/api/api_messages.h"
 #include "atom/common/atom_version.h"
+#include "atom/common/native_mate_converters/image_converter.h"
 #include "atom/common/native_mate_converters/file_path_converter.h"
 #include "atom/common/options_switches.h"
 #include "base/command_line.h"
@@ -41,6 +42,8 @@
 #include "ipc/ipc_message_macros.h"
 #include "native_mate/dictionary.h"
 #include "ui/gfx/codec/png_codec.h"
+#include "ui/gfx/image/image.h"
+#include "ui/gfx/image/image_skia.h"
 #include "ui/gfx/point.h"
 #include "ui/gfx/rect.h"
 #include "ui/gfx/size.h"
@@ -73,9 +76,9 @@ NativeWindow::NativeWindow(content::WebContents* web_contents,
 #endif
 
   // Read icon before window is created.
-  std::string icon;
-  if (options.Get(switches::kIcon, &icon) && !SetIcon(icon))
-    LOG(ERROR) << "Failed to set icon to " << icon;
+  gfx::ImageSkia icon;
+  if (options.Get(switches::kIcon, &icon))
+    icon_.reset(new gfx::Image(icon));
 
   // Read iframe security before any navigation.
   options.Get(switches::kNodeIntegration, &node_integration_);
@@ -257,26 +260,6 @@ bool NativeWindow::IsWebViewFocused() {
   return host_view && host_view->HasFocus();
 }
 
-bool NativeWindow::SetIcon(const std::string& str_path) {
-  base::FilePath path = base::FilePath::FromUTF8Unsafe(str_path);
-
-  // Read the file from disk.
-  std::string file_contents;
-  if (path.empty() || !base::ReadFileToString(path, &file_contents))
-    return false;
-
-  // Decode the bitmap using WebKit's image decoder.
-  const unsigned char* data =
-      reinterpret_cast<const unsigned char*>(file_contents.data());
-  scoped_ptr<SkBitmap> decoded(new SkBitmap());
-  gfx::PNGCodec::Decode(data, file_contents.length(), decoded.get());
-  if (decoded->empty())
-    return false;  // Unable to decode.
-
-  icon_ = gfx::Image::CreateFrom1xBitmap(*decoded.release());
-  return true;
-}
-
 base::ProcessHandle NativeWindow::GetRenderProcessHandle() {
   return GetWebContents()->GetRenderProcessHost()->GetHandle();
 }

atom/browser/native_window.h

@@ -18,7 +18,6 @@
 #include "atom/browser/native_window_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/browser/notification_observer.h"
-#include "ui/gfx/image/image.h"
 #include "vendor/brightray/browser/default_web_contents_delegate.h"
 #include "vendor/brightray/browser/inspectable_web_contents_delegate.h"
 #include "vendor/brightray/browser/inspectable_web_contents_impl.h"
@@ -32,6 +31,7 @@ class WebContents;
 }
 
 namespace gfx {
+class Image;
 class Point;
 class Rect;
 class Size;
@@ -144,8 +144,6 @@ class NativeWindow : public brightray::DefaultWebContentsDelegate,
   virtual void BlurWebView();
   virtual bool IsWebViewFocused();
 
-  virtual bool SetIcon(const std::string& path);
-
   // Returns the process handle of render process, useful for killing the
   // render process manually
   virtual base::ProcessHandle GetRenderProcessHandle();
@@ -251,7 +249,7 @@ class NativeWindow : public brightray::DefaultWebContentsDelegate,
   bool has_frame_;
 
   // Window icon.
-  gfx::Image icon_;
+  scoped_ptr<gfx::Image> icon_;
 
  private:
   // Schedule a notification unresponsive event.

atom/browser/native_window_gtk.cc

@@ -23,6 +23,7 @@
 #include "ui/base/x/x11_util.h"
 #include "ui/gfx/font_render_params_linux.h"
 #include "ui/gfx/gtk_util.h"
+#include "ui/gfx/image.h"
 #include "ui/gfx/rect.h"
 #include "ui/gfx/skia_utils_gtk.h"
 
@@ -129,8 +130,8 @@ NativeWindowGtk::NativeWindowGtk(content::WebContents* web_contents,
   // Create the underlying gdk window.
   gtk_widget_realize(GTK_WIDGET(window_));
 
-  if (!icon_.IsEmpty())
-    gtk_window_set_icon(window_, icon_.ToGdkPixbuf());
+  if (icon_)
+    gtk_window_set_icon(window_, icon_->ToGdkPixbuf());
 
   ui::ActiveWindowWatcherX::AddObserver(this);
 

atom/browser/native_window_win.cc

@@ -22,6 +22,7 @@
 #include "content/public/browser/web_contents.h"
 #include "content/public/browser/web_contents_view.h"
 #include "native_mate/dictionary.h"
+#include "ui/gfx/image.h"
 #include "ui/gfx/path.h"
 #include "ui/base/models/simple_menu_model.h"
 #include "ui/views/widget/widget.h"
@@ -527,10 +528,10 @@ bool NativeWindowWin::ShouldHandleSystemCommands() const {
 }
 
 gfx::ImageSkia NativeWindowWin::GetWindowAppIcon() {
-  if (icon_.IsEmpty())
-    return gfx::ImageSkia();
+  if (icon_)
+    return *(icon_->ToImageSkia());
   else
-    return *icon_.ToImageSkia();
+    return gfx::ImageSkia();
 }
 
 gfx::ImageSkia NativeWindowWin::GetWindowIcon() {