Support Windows native textfield, combobox, etc. in new bubbles.

views/bubble/bubble_delegate.cc

 // Copyright (c) 2011 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 "views/bubble/bubble_delegate.h"
 
 #include "ui/base/animation/slide_animation.h"
 #include "views/bubble/bubble_frame_view.h"
 #include "views/widget/widget.h"
 
 // The duration of the fade animation in milliseconds.
-static const int kHideFadeDurationMS = 1000;
+static const int kHideFadeDurationMS = 200;
 
 namespace views {
 
+namespace {
+
+// Create a widget to host the bubble.
+Widget* CreateBubbleWidget(BubbleDelegateView* bubble, Widget* parent) {
+  Widget* bubble_widget = new Widget();
+  Widget::InitParams bubble_params(Widget::InitParams::TYPE_BUBBLE);
+  bubble_params.delegate = bubble;
+  bubble_params.transparent = true;
+  bubble_params.parent_widget = parent;
+  if (!bubble_params.parent_widget)
+    bubble_params.ownership = Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET;
+#if defined(OS_WIN) && !defined(USE_AURA)
+  bubble_params.type = Widget::InitParams::TYPE_WINDOW_FRAMELESS;
+  bubble_params.transparent = false;
+#endif
+  bubble_widget->Init(bubble_params);
+  return bubble_widget;
+}
+
+#if defined(OS_WIN) && !defined(USE_AURA)
+// The border widget's delegate, needed for transparent Windows native controls.
+// TODO(msw): Remove this when Windows native controls are no longer needed.
+class VIEWS_EXPORT BubbleBorderDelegateView : public WidgetDelegateView {
+ public:
+  explicit BubbleBorderDelegateView(BubbleDelegateView* bubble)
+    : bubble_(bubble) {}

[Ben Goodger (Google), 2011/10/27 15:37:00]

nit: 4-space indent instead of 2.

[msw, 2011/10/28 17:10:18]

Done.

+  virtual ~BubbleBorderDelegateView() {}
+
+  // WidgetDelegateView overrides:
+  virtual bool CanActivate() const OVERRIDE { return false; }
+  virtual NonClientFrameView* CreateNonClientFrameView() OVERRIDE {
+    return bubble_->CreateNonClientFrameView();
+  }
+
+ private:
+  BubbleDelegateView* bubble_;
+
+  DISALLOW_COPY_AND_ASSIGN(BubbleBorderDelegateView);
+};
+
+// Create a widget to host the bubble's border.
+Widget* CreateBorderWidget(BubbleDelegateView* bubble, Widget* parent) {
+  Widget* border_widget = new Widget();
+  Widget::InitParams border_params(Widget::InitParams::TYPE_BUBBLE);
+  border_params.delegate = new BubbleBorderDelegateView(bubble);
+  border_params.transparent = true;
+  border_params.parent_widget = parent;
+  if (!border_params.parent_widget)
+    border_params.ownership = Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET;
+  border_widget->Init(border_params);
+  return border_widget;
+}
+#endif
+
+}  // namespace
+
 BubbleDelegateView::BubbleDelegateView()
-    : WidgetDelegateView(),
-      close_on_esc_(true),
+    : close_on_esc_(true),
       arrow_location_(BubbleBorder::TOP_LEFT),
-      color_(SK_ColorWHITE) {
+      color_(SK_ColorWHITE),
+      border_widget_(NULL) {
+  set_background(views::Background::CreateSolidBackground(color_));
   AddAccelerator(Accelerator(ui::VKEY_ESCAPE, 0));
 }
 
 BubbleDelegateView::BubbleDelegateView(
     const gfx::Point& anchor_point,
     BubbleBorder::ArrowLocation arrow_location,
     const SkColor& color)
-    : WidgetDelegateView(),
-      close_on_esc_(true),
+    : close_on_esc_(true),
       anchor_point_(anchor_point),
       arrow_location_(arrow_location),
-      color_(color) {
+      color_(color),
+      border_widget_(NULL) {
+  set_background(views::Background::CreateSolidBackground(color_));
   AddAccelerator(Accelerator(ui::VKEY_ESCAPE, 0));
 }
 
-BubbleDelegateView::~BubbleDelegateView() {}
+BubbleDelegateView::~BubbleDelegateView() {
+  if (border_widget_)
+    border_widget_->Close();
+}
 
 // static
 Widget* BubbleDelegateView::CreateBubble(BubbleDelegateView* bubble_delegate,
                                          Widget* parent_widget) {
   bubble_delegate->Init();
-  views::Widget* bubble_widget = new views::Widget();
-  views::Widget::InitParams params(views::Widget::InitParams::TYPE_BUBBLE);
-  params.delegate = bubble_delegate;
-  params.transparent = true;
-  if (!parent_widget)
-    params.ownership = Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET;
-  params.parent_widget = parent_widget;
-  bubble_widget->Init(params);
+  Widget* bubble_widget = CreateBubbleWidget(bubble_delegate, parent_widget);
+
+#if defined(OS_WIN) && !defined(USE_AURA)
+  Widget* border_widget = CreateBorderWidget(bubble_delegate, parent_widget);

[Ben Goodger (Google), 2011/10/27 15:37:00]

Move the border initialization into a separate function to keep the reading flow
here smooth.

[msw, 2011/10/28 17:10:18]

Only 3 lines were initializing the border, but I split up some functionality;
let me know if I missed your point.

+  bubble_delegate->border_widget_ = border_widget;
+  bubble_widget->SetContentsView(bubble_delegate->GetContentsView());
+  border_widget->SetBounds(bubble_delegate->GetBubbleBounds());
+  gfx::Rect client_bounds(
+      bubble_delegate->GetBubbleFrameView()->GetBoundsForClientView());
+  client_bounds.Offset(border_widget->GetWindowScreenBounds().origin());
+  bubble_widget->SetBounds(client_bounds);
+#else
   bubble_widget->SetBounds(bubble_delegate->GetBubbleBounds());
+#endif
+
   return bubble_widget;
 }
 
 View* BubbleDelegateView::GetInitiallyFocusedView() {
   return this;
 }
 
 View* BubbleDelegateView::GetContentsView() {
   return this;
 }
 
-ClientView* BubbleDelegateView::CreateClientView(Widget* widget) {
-  return new ClientView(widget, GetContentsView());
-}
-
 NonClientFrameView* BubbleDelegateView::CreateNonClientFrameView() {
   return new BubbleFrameView(GetArrowLocation(),
                              GetPreferredSize(),
                              GetColor());
 }
 
 gfx::Point BubbleDelegateView::GetAnchorPoint() {
   return anchor_point_;
 }
 
 BubbleBorder::ArrowLocation BubbleDelegateView::GetArrowLocation() const {
   return arrow_location_;
 }
 
 SkColor BubbleDelegateView::GetColor() const {
   return color_;
 }
 
-void BubbleDelegateView::Init() {}
+void BubbleDelegateView::Show() {
+  if (border_widget_)
+    border_widget_->Show();
+  GetWidget()->Show();
+  GetFocusManager()->SetFocusedView(GetInitiallyFocusedView());
+}
 
 void BubbleDelegateView::StartFade(bool fade_in) {
   fade_animation_.reset(new ui::SlideAnimation(this));
   fade_animation_->SetSlideDuration(kHideFadeDurationMS);
   fade_animation_->Reset(fade_in ? 0.0 : 1.0);
+
+#if defined(OS_WIN) && !defined(USE_AURA)
+  HWND hwnd = GetWidget()->GetNativeView();
+  SetWindowLong(hwnd, GWL_EXSTYLE,
+      GetWindowLong(hwnd, GWL_EXSTYLE) | WS_EX_LAYERED);

[Ben Goodger (Google), 2011/10/27 15:37:00]

Question: Can we do this in NativeWidgetWin::SetOpacity() when setting an
opacity value other than 1.0?

[msw, 2011/10/28 17:10:18]

Moved into AnimationProgressed. We don't want to toggle the layered window style
on other widgets using per-pixel alpha (like the bubble's border widget) when
they're set to full opacity.

+#endif
+
   if (fade_in) {
+    if (border_widget_)
+      border_widget_->SetOpacity(0);
     GetWidget()->SetOpacity(0);
-    GetWidget()->Show();
+    Show();
     fade_animation_->Show();
   } else {
     fade_animation_->Hide();
   }
 }
 
 bool BubbleDelegateView::AcceleratorPressed(const Accelerator& accelerator) {
   if (!close_on_esc() || accelerator.key_code() != ui::VKEY_ESCAPE)
     return false;
   if (fade_animation_.get())
     fade_animation_->Reset();
   GetWidget()->Close();
   return true;
 }
 
+void BubbleDelegateView::Init() {}
+
 void BubbleDelegateView::AnimationEnded(const ui::Animation* animation) {
   DCHECK_EQ(animation, fade_animation_.get());
   bool closed = fade_animation_->GetCurrentValue() == 0;
   fade_animation_->Reset();
+
+#if defined(OS_WIN) && !defined(USE_AURA)
+  HWND hwnd = GetWidget()->GetNativeView();
+  SetWindowLong(hwnd, GWL_EXSTYLE,
+      GetWindowLong(hwnd, GWL_EXSTYLE) & ~WS_EX_LAYERED);

[Ben Goodger (Google), 2011/10/27 15:37:00]

Again, in NativeWidgetWin::SetOpacity() when setting the value to 1.0?

[msw, 2011/10/28 17:10:18]

Ditto to the StartFade comment.

+#endif
+
   if (closed)
     GetWidget()->Close();
 }
 
 void BubbleDelegateView::AnimationProgressed(const ui::Animation* animation) {
   DCHECK_EQ(animation, fade_animation_.get());
   DCHECK(fade_animation_->is_animating());
-  GetWidget()->SetOpacity(fade_animation_->GetCurrentValue() * 255);
+  unsigned char opacity = fade_animation_->GetCurrentValue() * 255;
+#if defined(OS_WIN) && !defined(USE_AURA)
+  HWND hwnd = GetWidget()->GetNativeView();
+  SetLayeredWindowAttributes(hwnd, 0, opacity, LWA_ALPHA);

[Ben Goodger (Google), 2011/10/27 15:37:00]

Here, can we call SetOpacity() on GetWidget()?

[msw, 2011/10/28 17:10:18]

Nope, as you pointed out, we need to use SetLayeredWindowAttributes instead of
SetOpacity's underlying UpdateLayeredWindow in order to host child native
Windows controls.

+  border_widget_->SetOpacity(opacity);
+  border_widget_->non_client_view()->SchedulePaint();
+#endif
+  GetWidget()->SetOpacity(opacity);
   SchedulePaint();
 }
 
 const BubbleView* BubbleDelegateView::GetBubbleView() const {
   return GetWidget()->client_view()->AsBubbleView();
 }
 
 const BubbleFrameView* BubbleDelegateView::GetBubbleFrameView() const {
   return static_cast<BubbleFrameView*>(
+#if defined(OS_WIN) && !defined(USE_AURA)
+      border_widget_->non_client_view()->frame_view());
+#else
       GetWidget()->non_client_view()->frame_view());
+#endif
 }
 
 gfx::Rect BubbleDelegateView::GetBubbleBounds() {
   // The argument rect has its origin at the bubble's arrow anchor point;
   // its size is the preferred size of the bubble's client view (this view).
   return GetBubbleFrameView()->GetWindowBoundsForClientBounds(
       gfx::Rect(GetAnchorPoint(), GetPreferredSize()));
 }
 
 }  // namespace views