src/ui/views/view_targeter.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "ui/views/view_targeter.h"
   6
   7 #include "ui/events/event_target.h"
   8 #include "ui/views/focus/focus_manager.h"
   9 #include "ui/views/view.h"
  10
  11 namespace views {
  12
  13 ViewTargeter::ViewTargeter() {}
  14 ViewTargeter::~ViewTargeter() {}
  15
  16 ui::EventTarget* ViewTargeter::FindTargetForEvent(ui::EventTarget* root,
  17                                                   ui::Event* event) {
  18   View* view = static_cast<View*>(root);
  19   if (event->IsKeyEvent())
  20     return FindTargetForKeyEvent(view, *static_cast<ui::KeyEvent*>(event));
  21   else if (event->IsScrollEvent())
  22     return EventTargeter::FindTargetForEvent(root, event);
  23
  24   NOTREACHED() << "ViewTargeter does not yet support this event type.";
  25   return NULL;
  26 }
  27
  28 ui::EventTarget* ViewTargeter::FindNextBestTarget(
  29     ui::EventTarget* previous_target,
  30     ui::Event* event) {
  31   return previous_target->GetParentTarget();
  32 }
  33
  34 bool ViewTargeter::SubtreeCanAcceptEvent(
  35     ui::EventTarget* target,
  36     const ui::LocatedEvent& event) const {
  37   views::View* view = static_cast<views::View*>(target);
  38   if (!view->visible())
  39     return false;
  40   return true;
  41 }
  42
  43 bool ViewTargeter::EventLocationInsideBounds(
  44     ui::EventTarget* target,
  45     const ui::LocatedEvent& event) const {
  46   views::View* view = static_cast<views::View*>(target);
  47   gfx::Rect rect(event.location(), gfx::Size(1, 1));
  48   gfx::RectF rect_in_view_coords_f(rect);
  49   if (view->parent())
  50     View::ConvertRectToTarget(view->parent(), view, &rect_in_view_coords_f);
  51   gfx::Rect rect_in_view_coords = gfx::ToEnclosingRect(rect_in_view_coords_f);
  52
  53   // TODO(tdanderson): Don't call into HitTestRect() directly here.
  54   //                   See crbug.com/370579.
  55   return view->HitTestRect(rect_in_view_coords);
  56 }
  57
  58 View* ViewTargeter::FindTargetForKeyEvent(View* view, const ui::KeyEvent& key) {
  59   if (view->GetFocusManager())
  60     return view->GetFocusManager()->GetFocusedView();
  61   return NULL;
  62 }
  63
  64 }  // namespace aura