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// 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
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