src/ui/wm/core/easy_resize_window_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/wm/core/easy_resize_window_targeter.h"
   6
   7 #include "ui/aura/window.h"
   8 #include "ui/gfx/geometry/insets_f.h"
   9 #include "ui/gfx/geometry/rect.h"
  10 #include "ui/wm/public/transient_window_client.h"
  11
  12 namespace wm {
  13
  14 EasyResizeWindowTargeter::EasyResizeWindowTargeter(
  15     aura::Window* container,
  16     const gfx::Insets& mouse_extend,
  17     const gfx::Insets& touch_extend)
  18     : container_(container),
  19       mouse_extend_(mouse_extend),
  20       touch_extend_(touch_extend) {
  21 }
  22
  23 EasyResizeWindowTargeter::~EasyResizeWindowTargeter() {
  24 }
  25
  26 bool EasyResizeWindowTargeter::EventLocationInsideBounds(
  27     ui::EventTarget* target,
  28     const ui::LocatedEvent& event) const {
  29   aura::Window* window = static_cast<aura::Window*>(target);
  30   if (ShouldUseExtendedBounds(window)) {
  31     // Note that |event|'s location is in |window|'s parent's coordinate system,
  32     // so convert it to |window|'s coordinate system first.
  33     gfx::Point point = event.location();
  34     if (window->parent())
  35       aura::Window::ConvertPointToTarget(window->parent(), window, &point);
  36
  37     gfx::Rect bounds(window->bounds().size());
  38     if (event.IsTouchEvent() || event.IsGestureEvent())
  39       bounds.Inset(touch_extend_);
  40     else
  41       bounds.Inset(mouse_extend_);
  42
  43     return bounds.Contains(point);
  44   }
  45   return WindowTargeter::EventLocationInsideBounds(window, event);
  46 }
  47
  48 bool EasyResizeWindowTargeter::ShouldUseExtendedBounds(
  49     const aura::Window* window) const {
  50   // Use the extended bounds only for immediate child windows of |container_|.
  51   // Use the default targetter otherwise.
  52   if (window->parent() != container_)
  53     return false;
  54
  55   aura::client::TransientWindowClient* transient_window_client =
  56       aura::client::GetTransientWindowClient();
  57   return !transient_window_client ||
  58       !transient_window_client->GetTransientParent(window) ||
  59       transient_window_client->GetTransientParent(window) == container_;
  60 }
  61
  62 }  // namespace wm