1 // Copyright 2013 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 "ash/frame/frame_border_hit_test_controller.h"
6
7 #include "ash/ash_constants.h"
8 #include "ash/frame/caption_buttons/frame_caption_button_container_view.h"
9 #include "ash/wm/resize_handle_window_targeter.h"
10 #include "ash/wm/window_state_observer.h"
11 #include "ui/aura/env.h"
12 #include "ui/aura/window.h"
13 #include "ui/aura/window_observer.h"
14 #include "ui/aura/window_targeter.h"
15 #include "ui/base/hit_test.h"
16 #include "ui/views/widget/widget.h"
17 #include "ui/views/widget/widget_delegate.h"
18 #include "ui/views/window/non_client_view.h"
19
20 namespace ash {
21
FrameBorderHitTestController(views::Widget * frame)22 FrameBorderHitTestController::FrameBorderHitTestController(views::Widget* frame)
23 : frame_window_(frame->GetNativeWindow()) {
24 frame_window_->SetEventTargeter(scoped_ptr<ui::EventTargeter>(
25 new ResizeHandleWindowTargeter(frame_window_, NULL)));
26 }
27
~FrameBorderHitTestController()28 FrameBorderHitTestController::~FrameBorderHitTestController() {
29 }
30
31 // static
NonClientHitTest(views::NonClientFrameView * view,FrameCaptionButtonContainerView * caption_button_container,const gfx::Point & point_in_widget)32 int FrameBorderHitTestController::NonClientHitTest(
33 views::NonClientFrameView* view,
34 FrameCaptionButtonContainerView* caption_button_container,
35 const gfx::Point& point_in_widget) {
36 gfx::Rect expanded_bounds = view->bounds();
37 int outside_bounds = kResizeOutsideBoundsSize;
38
39 if (aura::Env::GetInstance()->is_touch_down())
40 outside_bounds *= kResizeOutsideBoundsScaleForTouch;
41 expanded_bounds.Inset(-outside_bounds, -outside_bounds);
42
43 if (!expanded_bounds.Contains(point_in_widget))
44 return HTNOWHERE;
45
46 // Check the frame first, as we allow a small area overlapping the contents
47 // to be used for resize handles.
48 views::Widget* frame = view->GetWidget();
49 bool can_ever_resize = frame->widget_delegate()->CanResize();
50 // Don't allow overlapping resize handles when the window is maximized or
51 // fullscreen, as it can't be resized in those states.
52 int resize_border =
53 frame->IsMaximized() || frame->IsFullscreen() ? 0 :
54 kResizeInsideBoundsSize;
55 int frame_component = view->GetHTComponentForFrame(point_in_widget,
56 resize_border,
57 resize_border,
58 kResizeAreaCornerSize,
59 kResizeAreaCornerSize,
60 can_ever_resize);
61 if (frame_component != HTNOWHERE)
62 return frame_component;
63
64 int client_component = frame->client_view()->NonClientHitTest(
65 point_in_widget);
66 if (client_component != HTNOWHERE)
67 return client_component;
68
69 if (caption_button_container->visible()) {
70 gfx::Point point_in_caption_button_container(point_in_widget);
71 views::View::ConvertPointFromWidget(caption_button_container,
72 &point_in_caption_button_container);
73 int caption_button_component = caption_button_container->NonClientHitTest(
74 point_in_caption_button_container);
75 if (caption_button_component != HTNOWHERE)
76 return caption_button_component;
77 }
78
79 // Caption is a safe default.
80 return HTCAPTION;
81 }
82
83 } // namespace ash
84