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1 // Copyright 2017 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/wm/overview/overview_window_drag_controller.h" | |
6 | |
7 #include "ash/screen_util.h" | |
8 #include "ash/shell.h" | |
9 #include "ash/wm/overview/scoped_transform_overview_window.h" | |
10 #include "ash/wm/overview/window_selector.h" | |
11 #include "ash/wm/overview/window_selector_item.h" | |
12 #include "ash/wm/splitview/split_view_controller.h" | |
13 #include "ash/wm/window_positioning_utils.h" | |
14 #include "ash/wm/window_state.h" | |
15 #include "ash/wm/wm_event.h" | |
16 #include "ash/wm/workspace/phantom_window_controller.h" | |
17 #include "ui/aura/window.h" | |
18 #include "ui/wm/core/coordinate_conversion.h" | |
19 | |
20 namespace ash { | |
21 | |
22 namespace { | |
23 | |
24 // The minimum offset that will be considered as a drag event. | |
25 const int kMinimiumDragOffset = 5; | |
26 | |
27 // Snapping distance between the dragged window with the screen edge. It's | |
28 // useful especially for touch events. | |
29 const int kScreenEdgeInsetForDrag = 200; | |
30 | |
31 } // namespace | |
32 | |
33 OverviewWindowDragController::OverviewWindowDragController( | |
34 WindowSelector* window_selector) | |
35 : window_selector_(window_selector), | |
36 split_view_controller_(Shell::Get()->split_view_controller()) {} | |
37 | |
38 OverviewWindowDragController::~OverviewWindowDragController() {} | |
39 | |
40 void OverviewWindowDragController::InitiateDrag( | |
41 WindowSelectorItem* item, | |
42 const gfx::Point& location_in_screen) { | |
43 previous_event_location_ = location_in_screen; | |
44 item_ = item; | |
45 } | |
46 | |
47 void OverviewWindowDragController::Drag(const gfx::Point& location_in_screen) { | |
48 if (!did_move_ && | |
49 (std::abs(location_in_screen.x() - previous_event_location_.x()) < | |
50 kMinimiumDragOffset || | |
51 std::abs(location_in_screen.y() - previous_event_location_.y()) < | |
52 kMinimiumDragOffset)) { | |
53 return; | |
54 } | |
55 did_move_ = true; | |
56 | |
57 // Updates the dragged |item_|'s bounds accordingly. | |
varkha
2017/06/30 16:32:26
nit: not a method declaration so 'updates' -> 'upd
xdai1
2017/07/06 00:35:49
Done.
| |
58 gfx::Rect bounds(item_->target_bounds()); | |
59 bounds.Offset(location_in_screen.x() - previous_event_location_.x(), | |
60 location_in_screen.y() - previous_event_location_.y()); | |
61 item_->SetBounds(bounds, OverviewAnimationType::OVERVIEW_ANIMATION_NONE); | |
62 previous_event_location_ = location_in_screen; | |
63 | |
64 UpdatePhantomWindow(location_in_screen); | |
65 } | |
66 | |
67 void OverviewWindowDragController::CompleteDrag() { | |
68 phantom_window_controller_.reset(); | |
69 | |
70 if (!did_move_) { | |
71 // If no drag was initiated (e.g., a click/tap on the overview window), | |
72 // activate the window. If the split view is active and has a left window, | |
73 // snap the current window to right. If the split view is active and has a | |
74 // right window, snap the current window to left. | |
75 SplitViewController::State split_state = split_view_controller_->state(); | |
76 if (split_state == SplitViewController::NO_SNAP) | |
77 window_selector_->SelectWindow(item_); | |
78 else if (split_state == SplitViewController::LEFT_SNAPPED) | |
varkha
2017/06/30 16:32:26
Maybe just a bit simpler:
} else {
SnapWindow(sp
xdai1
2017/07/06 00:35:49
I merged OverviewWindowDragController::SnapType en
| |
79 SnapWindow(SNAP_RIGHT); | |
80 else | |
81 SnapWindow(SNAP_LEFT); | |
82 } else { | |
83 // If the window was dragged around but should not be snapped, move it back | |
84 // to overview window grid. | |
85 if (snap_type_ == SNAP_NONE) | |
86 window_selector_->PositionWindows(true /* animate */); | |
87 else if (snap_type_ == SNAP_LEFT) | |
varkha
2017/06/30 16:32:26
Would this work:
else
SnapWindow(snap_type_);
xdai1
2017/07/06 00:35:49
Done.
| |
88 SnapWindow(SNAP_LEFT); | |
89 else | |
90 SnapWindow(SNAP_RIGHT); | |
91 did_move_ = false; | |
92 } | |
93 } | |
94 | |
95 void OverviewWindowDragController::UpdatePhantomWindow( | |
96 const gfx::Point& location_in_screen) { | |
97 SnapType last_snap_type = snap_type_; | |
98 snap_type_ = GetSnapType(location_in_screen); | |
99 if (snap_type_ == SNAP_NONE || snap_type_ != last_snap_type) { | |
100 phantom_window_controller_.reset(); | |
101 if (snap_type_ == SNAP_NONE) | |
102 return; | |
103 } | |
104 | |
105 const bool can_snap = snap_type_ != SNAP_NONE && | |
106 wm::GetWindowState(item_->GetWindow())->CanSnap(); | |
107 if (!can_snap) { | |
108 snap_type_ = SNAP_NONE; | |
109 phantom_window_controller_.reset(); | |
110 return; | |
111 } | |
112 | |
113 aura::Window* target_window = item_->GetWindow(); | |
114 SplitViewController::State snap_type = | |
115 (snap_type_ == SNAP_LEFT) ? SplitViewController::LEFT_SNAPPED | |
116 : SplitViewController::RIGHT_SNAPPED; | |
117 gfx::Rect phantom_bounds_in_screen = | |
118 split_view_controller_->GetSnappedWindowBoundsInScreen(target_window, | |
119 snap_type); | |
120 | |
121 if (!phantom_window_controller_) { | |
122 phantom_window_controller_ = | |
123 base::MakeUnique<PhantomWindowController>(target_window); | |
124 } | |
125 phantom_window_controller_->Show(phantom_bounds_in_screen); | |
126 } | |
127 | |
128 OverviewWindowDragController::SnapType | |
129 OverviewWindowDragController::GetSnapType( | |
130 const gfx::Point& location_in_screen) { | |
131 gfx::Rect area( | |
132 ScreenUtil::GetDisplayWorkAreaBoundsInParent(item_->GetWindow())); | |
133 ::wm::ConvertRectToScreen(item_->GetWindow()->GetRootWindow(), &area); | |
134 area.Inset(kScreenEdgeInsetForDrag, 0); | |
135 | |
136 if (location_in_screen.x() <= area.x()) | |
137 return SNAP_LEFT; | |
138 if (location_in_screen.x() >= area.right() - 1) | |
139 return SNAP_RIGHT; | |
140 return SNAP_NONE; | |
141 } | |
142 | |
143 void OverviewWindowDragController::SnapWindow(SnapType snap_type) { | |
144 DCHECK_NE(snap_type, SNAP_NONE); | |
145 | |
146 item_->EnsureVisible(); | |
147 item_->RestoreWindow(); | |
148 | |
149 // |item_| will be deleted after RemoveWindowSelectorItem(). | |
150 aura::Window* window = item_->GetWindow(); | |
151 window_selector_->RemoveWindowSelectorItem(item_); | |
152 (snap_type == SNAP_LEFT) ? split_view_controller_->SetLeftWindow(window) | |
153 : split_view_controller_->SetRightWindow(window); | |
154 item_ = nullptr; | |
155 } | |
156 | |
157 } // namespace ash | |
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