1 files changed, 111 insertions, 0 deletions
diff --git a/views/widget/aero_tooltip_manager.cc b/views/widget/aero_tooltip_manager.cc
new file mode 100644
index 0000000..0a93687
--- /dev/null
+++ b/views/widget/aero_tooltip_manager.cc
@@ -0,0 +1,111 @@
+// 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/aero_tooltip_manager.h"
+
+#include <windows.h>
+#include <commctrl.h>
+#include <shlobj.h>
+
+#include "base/bind.h"
+#include "base/message_loop.h"
+#include "ui/base/l10n/l10n_util_win.h"
+#include "ui/base/win/hwnd_util.h"
+#include "ui/gfx/point.h"
+
+namespace views {
+
+///////////////////////////////////////////////////////////////////////////////
+// AeroTooltipManager, public:
+
+AeroTooltipManager::AeroTooltipManager(Widget* widget)
+    : TooltipManagerWin(widget),
+      initial_delay_(0) {
+}
+
+AeroTooltipManager::~AeroTooltipManager() {
+  if (initial_timer_)
+    initial_timer_->Disown();
+}
+
+void AeroTooltipManager::OnMouse(UINT u_msg, WPARAM w_param, LPARAM l_param) {
+  if (u_msg == WM_MOUSELEAVE) {
+    last_mouse_pos_.SetPoint(-1, -1);
+    UpdateTooltip();
+    return;
+  }
+
+  if (initial_timer_)
+    initial_timer_->Disown();
+
+  if (u_msg == WM_MOUSEMOVE || u_msg == WM_NCMOUSEMOVE) {
+    gfx::Point mouse_pos(l_param);
+    if (u_msg == WM_NCMOUSEMOVE) {
+      // NC message coordinates are in screen coordinates.
+      POINT temp = mouse_pos.ToPOINT();
+      ::MapWindowPoints(HWND_DESKTOP, GetParent(), &temp, 1);
+      mouse_pos.SetPoint(temp.x, temp.y);
+    }
+    if (last_mouse_pos_ != mouse_pos) {
+      last_mouse_pos_ = mouse_pos;
+      HideKeyboardTooltip();
+      UpdateTooltip(mouse_pos);
+    }
+
+    // Delay opening of the tooltip just in case the user moves their
+    // mouse to another control. We defer this from Init because we get
+    // zero if we query it too soon.
+    if (!initial_delay_) {
+      initial_delay_ = static_cast<int>(
+          ::SendMessage(tooltip_hwnd_, TTM_GETDELAYTIME, TTDT_INITIAL, 0));
+    }
+    initial_timer_ = new InitialTimer(this);
+    initial_timer_->Start(initial_delay_);
+  } else {
+    // Hide the tooltip and cancel any timers.
+    ::SendMessage(tooltip_hwnd_, TTM_POP, 0, 0);
+    ::SendMessage(tooltip_hwnd_, TTM_TRACKACTIVATE, false, (LPARAM)&toolinfo_);
+    return;
+  }
+}
+
+///////////////////////////////////////////////////////////////////////////////
+// AeroTooltipManager, private:
+
+void AeroTooltipManager::OnTimer() {
+  initial_timer_ = NULL;
+
+  POINT pt = last_mouse_pos_.ToPOINT();
+  ::ClientToScreen(GetParent(), &pt);
+
+  // Set the position and visibility.
+  if (!tooltip_showing_) {
+    ::SendMessage(tooltip_hwnd_, TTM_POPUP, 0, 0);
+    ::SendMessage(tooltip_hwnd_, TTM_TRACKPOSITION, 0, MAKELPARAM(pt.x, pt.y));
+    ::SendMessage(tooltip_hwnd_, TTM_TRACKACTIVATE, true, (LPARAM)&toolinfo_);
+  }
+}
+
+///////////////////////////////////////////////////////////////////////////////
+// AeroTooltipManager::InitialTimer
+
+AeroTooltipManager::InitialTimer::InitialTimer(AeroTooltipManager* manager)
+    : manager_(manager) {
+}
+
+void AeroTooltipManager::InitialTimer::Start(int time) {
+  MessageLoop::current()->PostDelayedTask(
+      FROM_HERE, base::Bind(&InitialTimer::Execute, this), time);
+}
+
+void AeroTooltipManager::InitialTimer::Disown() {
+  manager_ = NULL;
+}
+
+void AeroTooltipManager::InitialTimer::Execute() {
+  if (manager_)
+    manager_->OnTimer();
+}
+
+}  // namespace views