Gets mustash frames looking like that of ash

mash/wm/non_client_frame_view_impl.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 "mash/wm/non_client_frame_view_impl.h"
-
-#include "components/mus/public/cpp/window.h"
-#include "mash/wm/move_loop.h"
-#include "mojo/converters/input_events/input_events_type_converters.h"
-#include "ui/compositor/paint_recorder.h"
-#include "ui/gfx/canvas.h"
-
-NonClientFrameViewImpl::NonClientFrameViewImpl(mus::Window* window)
-    : window_(window) {
-  window_->AddObserver(this);
-}
-
-NonClientFrameViewImpl::~NonClientFrameViewImpl() {
-  if (window_)
-    window_->RemoveObserver(this);
-}
-
-gfx::Rect NonClientFrameViewImpl::GetBoundsForClientView() const {
-  gfx::Rect result(GetLocalBounds());
-  result.Inset(window_->client_area());
-  return result;
-}
-
-void NonClientFrameViewImpl::OnPaint(gfx::Canvas* canvas) {
-  canvas->Save();
-  CustomFrameView::OnPaint(canvas);
-  canvas->Restore();
-
-  // The client app draws the client area. Make ours totally transparent so
-  // we only see the client apps client area.
-  canvas->FillRect(GetBoundsForClientView(), SK_ColorBLACK,
-                   SkXfermode::kSrc_Mode);
-}
-
-void NonClientFrameViewImpl::PaintChildren(const ui::PaintContext& context) {
-  CustomFrameView::PaintChildren(context);
-
-  // The client app draws the client area. Make ours totally transparent so
-  // we only see the client apps client area.
-  ui::PaintRecorder recorder(context, size(), &paint_cache_);
-  recorder.canvas()->FillRect(GetBoundsForClientView(), SK_ColorBLACK,
-                              SkXfermode::kSrc_Mode);
-}
-
-bool NonClientFrameViewImpl::OnMousePressed(const ui::MouseEvent& event) {
-  return StartMoveLoopIfNecessary(event);
-}
-
-bool NonClientFrameViewImpl::OnMouseDragged(const ui::MouseEvent& event) {
-  ContinueMove(event);
-  return move_loop_.get() != nullptr;
-}
-
-void NonClientFrameViewImpl::OnMouseReleased(const ui::MouseEvent& event) {
-  ContinueMove(event);
-}
-
-void NonClientFrameViewImpl::OnMouseCaptureLost() {
-  StopMove();
-}
-
-void NonClientFrameViewImpl::OnWindowClientAreaChanged(
-    mus::Window* window,
-    const gfx::Insets& old_client_area) {
-  Layout();
-  // NonClientView (our parent) positions the client view based on bounds from
-  // us. We need to layout from parent to trigger a layout of the client view.
-  if (parent())
-    parent()->Layout();
-  SchedulePaint();
-}
-
-void NonClientFrameViewImpl::OnWindowDestroyed(mus::Window* window) {
-  window_->RemoveObserver(this);
-  window_ = nullptr;
-}
-
-bool NonClientFrameViewImpl::StartMoveLoopIfNecessary(const ui::Event& event) {
-  if (move_loop_)
-    return false;
-  // TODO(sky): convert MoveLoop to take ui::Event.
-  move_loop_ = MoveLoop::Create(window_, *mus::mojom::Event::From(event));
-  return true;
-}
-
-void NonClientFrameViewImpl::ContinueMove(const ui::Event& event) {
-  // TODO(sky): convert MoveLoop to take ui::Event.
-  if (move_loop_ &&
-      move_loop_->Move(*mus::mojom::Event::From(event)) == MoveLoop::DONE) {
-    move_loop_.reset();
-  }
-}
-
-void NonClientFrameViewImpl::StopMove() {
-  move_loop_.reset();
-}