Enable tooltips for aura.

views/widget/tooltip_manager_views.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/widget/tooltip_manager_views.h"
 
 #if defined(USE_X11)
 #include <X11/Xlib.h>
 #include <X11/extensions/XInput2.h>
 #endif
 
 #if defined(OS_WIN)
 #include <windowsx.h>
 #endif
 
 #include "base/logging.h"
 #include "base/time.h"
 #include "base/utf_string_conversions.h"
 #include "third_party/skia/include/core/SkColor.h"
+#if defined(USE_AURA)
+#include "ui/aura/event.h"
+#include "ui/aura/window.h"
+#include "ui/aura_shell/aura_constants.h"
+#endif
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/gfx/font.h"
 #include "ui/gfx/screen.h"
 #include "views/background.h"
 #include "views/border.h"
 #include "views/events/event.h"
 #include "views/focus/focus_manager.h"
 #include "views/view.h"
 #include "views/widget/native_widget.h"
-#include "views/widget/root_view.h"
 
 #if defined(USE_WAYLAND)
 #include "ui/wayland/events/wayland_event.h"
 #endif
 
 namespace {
 SkColor kTooltipBackground = 0xFF7F7F00;
 int kTooltipTimeoutMs = 500;
 
 // FIXME: get cursor offset from actual cursor size.
@@ skipping 22 matching lines @@
   // We always display the tooltip inside the root view. So the max width is
   // the width of the view.
   gfx::Rect monitor_bounds =
       gfx::Screen::GetMonitorAreaNearestPoint(gfx::Point(x, y));
   // GtkLabel (gtk_label_ensure_layout) forces wrapping at this size. We mirror
   // the size here otherwise tooltips wider than the size used by gtklabel end
   // up with extraneous empty lines.
   return monitor_bounds.width() == 0 ? 800 : (monitor_bounds.width() + 1) / 2;
 }
 
-TooltipManagerViews::TooltipManagerViews(internal::RootView* root_view)
+TooltipManagerViews::TooltipManagerViews(views::View* root_view)
     : root_view_(root_view),
       tooltip_view_(NULL) {
   tooltip_label_.set_background(
       views::Background::CreateSolidBackground(kTooltipBackground));
   tooltip_widget_.reset(CreateTooltip());
   tooltip_widget_->SetContentsView(&tooltip_label_);
   tooltip_widget_->Activate();
   tooltip_widget_->SetAlwaysOnTop(true);
   tooltip_timer_.Start(FROM_HERE,
       base::TimeDelta::FromMilliseconds(kTooltipTimeoutMs),
@@ skipping 25 matching lines @@
 
 #if defined(USE_WAYLAND)
 base::MessagePumpObserver::EventStatus TooltipManagerViews::WillProcessEvent(
       ui::WaylandEvent* event) {
   if (event->type == ui::WAYLAND_MOTION)
     OnMouseMoved(event->motion.x, event->motion.y);
   return base::MessagePumpObserver::EVENT_CONTINUE;
 }
 #elif defined(USE_X11)
 base::EventStatus TooltipManagerViews::WillProcessEvent(
-    const base::NativeEvent& event) {
-  XGenericEventCookie* cookie = &event->xcookie;
-  if (cookie->evtype == XI_Motion) {
-    const XIDeviceEvent* xievent = static_cast<XIDeviceEvent*>(cookie->data);
-    OnMouseMoved(static_cast<int>(xievent->event_x),
-                 static_cast<int>(xievent->event_y));
+    const base::NativeEvent& native_event) {
+  if (!ui::IsMouseEvent(native_event))
+    return base::EVENT_CONTINUE;
+#if defined(USE_AURA)
+  aura::MouseEvent event(native_event);
+#else
+  MouseEvent event(native_event);
+#endif
+  switch (event.type()) {
+    case ui::ET_MOUSE_MOVED:
+      OnMouseMoved(event.x(), event.y());
+    default:
+      break;
   }
   return base::EVENT_CONTINUE;
 }
 
 void TooltipManagerViews::DidProcessEvent(const base::NativeEvent& event) {
 }
 #elif defined(OS_WIN)
 base::EventStatus TooltipManagerViews::WillProcessEvent(
     const base::NativeEvent& event) {
   if (event.message == WM_MOUSEMOVE)
     OnMouseMoved(GET_X_LPARAM(event.lParam), GET_Y_LPARAM(event.lParam));
   return base::EVENT_CONTINUE;
 }
 
 void TooltipManagerViews::DidProcessEvent(const base::NativeEvent& event) {
 }
 #endif
 
 void TooltipManagerViews::TooltipTimerFired() {
-  if (tooltip_widget_->IsVisible()) {
-    UpdateIfRequired(curr_mouse_pos_.x(), curr_mouse_pos_.y(), false);
-  } else {
-    tooltip_view_ = GetViewForTooltip(curr_mouse_pos_.x(), curr_mouse_pos_.y(),
-        false);
-    Update();
-  }
+  UpdateIfRequired(curr_mouse_pos_.x(), curr_mouse_pos_.y(), false);
 }
 
 View* TooltipManagerViews::GetViewForTooltip(int x, int y, bool for_keyboard) {
   View* view = NULL;
   if (!for_keyboard) {
-    view = root_view_->GetEventHandlerForPoint(gfx::Point(x, y));
+    // Convert x,y from screen coordinates to |root_view_| coordinates.
+    gfx::Point point(x, y);
+    gfx::Rect r = root_view_->GetWidget()->GetClientAreaScreenBounds();
+    point.SetPoint(point.x() - r.x(), point.y() - r.y());
+    View::ConvertPointFromWidget(root_view_, &point);
+    view = root_view_->GetEventHandlerForPoint(point);
   } else {
     FocusManager* focus_manager = root_view_->GetFocusManager();
     if (focus_manager)
       view = focus_manager->GetFocusedView();
   }
   return view;
 }
 
 void TooltipManagerViews::UpdateIfRequired(int x, int y, bool for_keyboard) {
   View* view = GetViewForTooltip(x, y, for_keyboard);
   string16 tooltip_text;
   if (view)
     view->GetTooltipText(gfx::Point(x, y), &tooltip_text);
 
+#if defined(USE_AURA)
+  // In aura, and aura::Window can also have a tooltip. If the view doesnot have
+  // a tooltip, we must also check for the aura::Window underneath the cursor.
+  if (tooltip_text.empty()) {
+    aura::Window* root = reinterpret_cast<aura::Window*>(
+        root_view_->GetWidget()->GetNativeView());
+    if (root) {
+      aura::Window* window = root->GetEventHandlerForPoint(gfx::Point(x, y));
+      if (window) {
+        void* property = window->GetProperty(aura_shell::kTooltipTextKey);
+        if (property)
+          tooltip_text = *reinterpret_cast<string16*>(property);
+      }
+    }
+  }
+#endif
+
   if (tooltip_view_ != view || tooltip_text_ != tooltip_text) {
     tooltip_view_ = view;
+    tooltip_text_ = tooltip_text;
     Update();
   }
 }
 
 void TooltipManagerViews::Update() {
-  if (!tooltip_view_ ||
-      !tooltip_view_->GetTooltipText(gfx::Point(), &tooltip_text_))
-    tooltip_text_.clear();
-
   if (tooltip_text_.empty()) {
     tooltip_widget_->Hide();
   } else {
     int max_width, line_count;
     string16 tooltip_text(tooltip_text_);
     TrimTooltipToFit(&tooltip_text, &max_width, &line_count,
                      curr_mouse_pos_.x(), curr_mouse_pos_.y());
     tooltip_label_.SetText(tooltip_text);
 
     SetTooltipBounds(curr_mouse_pos_, max_width,
                      tooltip_label_.GetPreferredSize().height());
     tooltip_widget_->Show();
   }
 }
 
 void TooltipManagerViews::SetTooltipBounds(gfx::Point mouse_pos,
                                            int tooltip_width,
                                            int tooltip_height) {
-  View::ConvertPointToScreen(root_view_, &mouse_pos);
   gfx::Rect tooltip_rect(mouse_pos.x(), mouse_pos.y(), tooltip_width,
                          tooltip_height);
 
   tooltip_rect.Offset(kCursorOffsetX, kCursorOffsetY);
   gfx::Rect monitor_bounds =
       gfx::Screen::GetMonitorAreaNearestPoint(tooltip_rect.origin());
   tooltip_widget_->SetBounds(tooltip_rect.AdjustToFit(monitor_bounds));
 }
 
 Widget* TooltipManagerViews::CreateTooltip() {
   Widget* widget = new Widget;
   Widget::InitParams params;
+  // For aura, since we set the type to TOOLTIP_TYPE, the widget will get
+  // auto-parented to the MenuAndTooltipsContainer.
   params.type = Widget::InitParams::TYPE_TOOLTIP;
   params.keep_on_top = true;
   params.accept_events = false;
   params.ownership = Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET;
   widget->Init(params);
-  widget->SetOpacity(0x00);
+  widget->SetOpacity(0xFF);
   return widget;
 }
 
 void TooltipManagerViews::OnMouseMoved(int x, int y) {
   if (tooltip_timer_.IsRunning())
     tooltip_timer_.Reset();
   curr_mouse_pos_.SetPoint(x, y);
 
   // If tooltip is visible, we may want to hide it. If it is not, we are ok.
   if (tooltip_widget_->IsVisible())
     UpdateIfRequired(curr_mouse_pos_.x(), curr_mouse_pos_.y(), false);
 }
 
 }  // namespace views