1 files changed, 239 insertions, 0 deletions
diff --git a/ui/views/widget/tooltip_manager_views.cc b/ui/views/widget/tooltip_manager_views.cc
new file mode 100644
index 0000000..fa3cb63
--- /dev/null
+++ b/ui/views/widget/tooltip_manager_views.cc
@@ -0,0 +1,239 @@
+// 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 "ui/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/event_types.h"
+#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/client/aura_constants.h"
+#include "ui/aura/event.h"
+#include "ui/aura/window.h"
+#endif
+#include "ui/base/resource/resource_bundle.h"
+#include "ui/gfx/font.h"
+#include "ui/gfx/screen.h"
+#include "ui/views/events/event.h"
+#include "ui/views/focus/focus_manager.h"
+#include "ui/views/widget/native_widget.h"
+#include "views/background.h"
+#include "views/border.h"
+#include "views/view.h"
+
+namespace {
+SkColor kTooltipBackground = 0xFF7F7F00;
+int kTooltipTimeoutMs = 500;
+
+// FIXME: get cursor offset from actual cursor size.
+int kCursorOffsetX = 10;
+int kCursorOffsetY = 15;
+}
+
+namespace views {
+
+// static
+int TooltipManager::GetTooltipHeight() {
+  // Not used for linux and chromeos.
+  NOTREACHED();
+  return 0;
+}
+
+// static
+gfx::Font TooltipManager::GetDefaultFont() {
+  return ResourceBundle::GetSharedInstance().GetFont(ResourceBundle::BaseFont);
+}
+
+// static
+int TooltipManager::GetMaxWidth(int x, int y) {
+  // FIXME: change this. This is for now just copied from TooltipManagerGtk.
+
+  // 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(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);
+}
+
+TooltipManagerViews::~TooltipManagerViews() {
+  tooltip_widget_->CloseNow();
+}
+
+void TooltipManagerViews::UpdateForMouseEvent(const MouseEvent& event) {
+  switch (event.type()) {
+    case ui::ET_MOUSE_EXITED:
+      // Mouse is exiting this widget. Stop showing the tooltip and the timer.
+      if (tooltip_timer_.IsRunning())
+        tooltip_timer_.Stop();
+      if (tooltip_widget_->IsVisible())
+        tooltip_widget_->Hide();
+      break;
+    case ui::ET_MOUSE_ENTERED:
+      // Mouse just entered this widget. Start the timer to show the tooltip.
+      if (tooltip_timer_.IsRunning())
+        tooltip_timer_.Stop();
+      tooltip_timer_.Start(FROM_HERE,
+          base::TimeDelta::FromMilliseconds(kTooltipTimeoutMs),
+          this, &TooltipManagerViews::TooltipTimerFired);
+      break;
+    case ui::ET_MOUSE_MOVED:
+      OnMouseMoved(event.location().x(), event.location().y());
+      break;
+    case ui::ET_MOUSE_PRESSED:
+    case ui::ET_MOUSE_RELEASED:
+    case ui::ET_MOUSE_DRAGGED:
+    case ui::ET_MOUSEWHEEL:
+      // Hide the tooltip for click, release, drag, wheel events.
+      if (tooltip_widget_->IsVisible())
+        tooltip_widget_->Hide();
+      break;
+    default:
+      NOTIMPLEMENTED();
+  }
+}
+
+void TooltipManagerViews::UpdateTooltip() {
+  UpdateIfRequired(curr_mouse_pos_.x(), curr_mouse_pos_.y(), false);
+}
+
+void TooltipManagerViews::TooltipTextChanged(View* view) {
+  if (tooltip_widget_->IsVisible())
+    UpdateIfRequired(curr_mouse_pos_.x(), curr_mouse_pos_.y(), false);
+}
+
+void TooltipManagerViews::ShowKeyboardTooltip(View* view) {
+  NOTREACHED();
+}
+
+void TooltipManagerViews::HideKeyboardTooltip() {
+  NOTREACHED();
+}
+
+void TooltipManagerViews::TooltipTimerFired() {
+  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) {
+    // Convert x,y from screen coordinates to |root_view_| coordinates.
+    gfx::Point point(x, 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::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_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) {
+  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(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