From 2ece9e2885df9ae049c4a9c6c19277da6a1ba78e Mon Sep 17 00:00:00 2001
From: Cheng Zhao <zcbenz@gmail.com>
Date: Sat, 9 Jul 2016 21:49:15 +0900
Subject: [PATCH 1/2] Add thickFrame option

---
 atom/browser/native_window_views.cc | 23 ++++++++++++++++++-----
 atom/browser/native_window_views.h  |  3 +++
 2 files changed, 21 insertions(+), 5 deletions(-)

diff --git a/atom/browser/native_window_views.cc b/atom/browser/native_window_views.cc
index 63ed8d9058c3..58d7a352fcbc 100644
--- a/atom/browser/native_window_views.cc
+++ b/atom/browser/native_window_views.cc
@@ -135,6 +135,10 @@ NativeWindowViews::NativeWindowViews(
       menu_bar_autohide_(false),
       menu_bar_visible_(false),
       menu_bar_alt_pressed_(false),
+#if defined(OS_WIN)
+      enabled_a11y_support_(false),
+      thick_frame_(true),
+#endif
       keyboard_event_handler_(new views::UnhandledKeyboardEventHandler),
       disable_count_(0),
       use_content_size_(false),
@@ -152,6 +156,11 @@ NativeWindowViews::NativeWindowViews(
   options.Get(options::kResizable, &resizable_);
   options.Get(options::kMinimizable, &minimizable_);
   options.Get(options::kMaximizable, &maximizable_);
+
+  // Transparent window must not have thick frame.
+  options.Get("thickFrame", &thick_frame_);
+  if (transparent())
+    thick_frame_ = false;
 #endif
 
   if (enable_larger_than_screen())
@@ -287,13 +296,13 @@ NativeWindowViews::NativeWindowViews(
     if (maximizable_)
       frame_style |= WS_MAXIMIZEBOX;
     // We should not show a frame for transparent window.
-    if (transparent())
+    if (!thick_frame_)
       frame_style &= ~(WS_THICKFRAME | WS_CAPTION);
     ::SetWindowLong(GetAcceleratedWidget(), GWL_STYLE, frame_style);
   }
 
-  if (transparent()) {
-    // Transparent window on Windows has to have WS_EX_COMPOSITED style.
+  if (!thick_frame_) {
+    // Window without thick frame has to have WS_EX_COMPOSITED style.
     LONG ex_style = ::GetWindowLong(GetAcceleratedWidget(), GWL_EXSTYLE);
     ex_style |= WS_EX_COMPOSITED;
     ::SetWindowLong(GetAcceleratedWidget(), GWL_EXSTYLE, ex_style);
@@ -513,7 +522,7 @@ void NativeWindowViews::SetContentSizeConstraints(
 
 void NativeWindowViews::SetResizable(bool resizable) {
 #if defined(OS_WIN)
-  if (!transparent())
+  if (thick_frame_)
     FlipWindowStyle(GetAcceleratedWidget(), resizable, WS_THICKFRAME);
 #elif defined(USE_X11)
   if (resizable != resizable_) {
@@ -536,7 +545,11 @@ void NativeWindowViews::SetResizable(bool resizable) {
 
 bool NativeWindowViews::IsResizable() {
 #if defined(OS_WIN)
-  return ::GetWindowLong(GetAcceleratedWidget(), GWL_STYLE) & WS_THICKFRAME;
+  if (thick_frame_) {
+    return ::GetWindowLong(GetAcceleratedWidget(), GWL_STYLE) & WS_THICKFRAME;
+  } else {
+    return CanResize();
+  }
 #else
   return CanResize();
 #endif
diff --git a/atom/browser/native_window_views.h b/atom/browser/native_window_views.h
index a7614e178f15..f3ca27077fe8 100644
--- a/atom/browser/native_window_views.h
+++ b/atom/browser/native_window_views.h
@@ -220,6 +220,9 @@ class NativeWindowViews : public NativeWindow,
   // If true we have enabled a11y
   bool enabled_a11y_support_;
 
+  // Whether to show the WS_THICKFRAME style.
+  bool thick_frame_;
+
   // The icons of window and taskbar.
   base::win::ScopedHICON window_icon_;
   base::win::ScopedHICON app_icon_;

From b70090170de330c0f918d87a1588dd650b919fec Mon Sep 17 00:00:00 2001
From: Cheng Zhao <zcbenz@gmail.com>
Date: Sat, 9 Jul 2016 21:52:45 +0900
Subject: [PATCH 2/2] docs: thickFrame option

---
 docs/api/browser-window.md | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/docs/api/browser-window.md b/docs/api/browser-window.md
index ba07e0bf167b..3d48b30010ed 100644
--- a/docs/api/browser-window.md
+++ b/docs/api/browser-window.md
@@ -174,6 +174,9 @@ It creates a new `BrowserWindow` with native properties as set by the `options`.
     this below.
   * `titleBarStyle` String - The style of window title bar. See more about this
     below.
+  * `thickFrame` Boolean - Use `WS_THICKFRAME` style for frameless windows on
+    Windows, which adds standard window frame. Setting it to `false` will remove
+    window shadow and window animations. Default is `true`.
   * `webPreferences` Object - Settings of web page's features. See more about
     this below.