Converts mash to use the common non-client frame

ash/mus/frame/frame_border_hit_test_controller.cc

-// Copyright 2015 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 "ash/mus/frame/frame_border_hit_test_controller.h"
-
-#include "ash/mus/frame/caption_buttons/frame_caption_button_container_view.h"
-#include "ui/aura/env.h"
-#include "ui/aura/window.h"
-#include "ui/base/hit_test.h"
-#include "ui/gfx/geometry/insets.h"
-#include "ui/views/widget/widget.h"
-#include "ui/views/widget/widget_delegate.h"
-#include "ui/views/window/non_client_view.h"
-
-namespace ash {
-namespace mus {
-
-// In the window corners, the resize areas don't actually expand bigger, but the
-// 16 px at the end of each edge triggers diagonal resizing.
-const int kResizeAreaCornerSize = 16;
-
-// Windows do not have a traditional visible window frame. Window content
-// extends to the edge of the window. We consider a small region outside the
-// window bounds and an even smaller region overlapping the window to be the
-// "non-client" area and use it for resizing.
-const int kResizeOutsideBoundsSize = 6;
-const int kResizeOutsideBoundsScaleForTouch = 5;
-const int kResizeInsideBoundsSize = 1;
-
-// static
-gfx::Insets FrameBorderHitTestController::GetResizeOutsideBoundsSize() {
-  return gfx::Insets(kResizeOutsideBoundsSize, kResizeOutsideBoundsSize,
-                     kResizeOutsideBoundsSize, kResizeOutsideBoundsSize);
-}
-
-// static
-int FrameBorderHitTestController::NonClientHitTest(
-    views::NonClientFrameView* view,
-    FrameCaptionButtonContainerView* caption_button_container,
-    const gfx::Point& point_in_widget) {
-  gfx::Rect expanded_bounds = view->bounds();
-  int outside_bounds = kResizeOutsideBoundsSize;
-
-  if (aura::Env::GetInstance()->is_touch_down())
-    outside_bounds *= kResizeOutsideBoundsScaleForTouch;
-  expanded_bounds.Inset(-outside_bounds, -outside_bounds);
-
-  if (!expanded_bounds.Contains(point_in_widget))
-    return HTNOWHERE;
-
-  // Check the frame first, as we allow a small area overlapping the contents
-  // to be used for resize handles.
-  views::Widget* frame = view->GetWidget();
-  bool can_ever_resize = frame->widget_delegate()->CanResize();
-  // Don't allow overlapping resize handles when the window is maximized or
-  // fullscreen, as it can't be resized in those states.
-  int resize_border = kResizeInsideBoundsSize;
-  if (frame->IsMaximized() || frame->IsFullscreen()) {
-    resize_border = 0;
-    can_ever_resize = false;
-  }
-  int frame_component = view->GetHTComponentForFrame(
-      point_in_widget, resize_border, resize_border, kResizeAreaCornerSize,
-      kResizeAreaCornerSize, can_ever_resize);
-  if (frame_component != HTNOWHERE)
-    return frame_component;
-
-  int client_component =
-      frame->client_view()->NonClientHitTest(point_in_widget);
-  if (client_component != HTNOWHERE)
-    return client_component;
-
-  if (caption_button_container->visible()) {
-    gfx::Point point_in_caption_button_container(point_in_widget);
-    views::View::ConvertPointFromWidget(caption_button_container,
-                                        &point_in_caption_button_container);
-    int caption_button_component = caption_button_container->NonClientHitTest(
-        point_in_caption_button_container);
-    if (caption_button_component != HTNOWHERE)
-      return caption_button_component;
-  }
-
-  // Caption is a safe default.
-  return HTCAPTION;
-}
-
-}  // namespace mus
-}  // namespace ash