1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
|
// Copyright (c) 2013 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 "ui/views/touchui/touch_selection_controller_impl.h"
#include "base/metrics/histogram_macros.h"
#include "base/time/time.h"
#include "ui/aura/client/cursor_client.h"
#include "ui/aura/env.h"
#include "ui/aura/window.h"
#include "ui/base/resource/resource_bundle.h"
#include "ui/gfx/canvas.h"
#include "ui/gfx/geometry/rect.h"
#include "ui/gfx/geometry/size.h"
#include "ui/gfx/image/image.h"
#include "ui/gfx/path.h"
#include "ui/gfx/screen.h"
#include "ui/resources/grit/ui_resources.h"
#include "ui/strings/grit/ui_strings.h"
#include "ui/views/resources/grit/views_resources.h"
#include "ui/views/widget/widget.h"
#include "ui/views/widget/widget_delegate.h"
#include "ui/wm/core/coordinate_conversion.h"
#include "ui/wm/core/masked_window_targeter.h"
namespace {
// Constants defining the visual attributes of selection handles
// The distance by which a handle image is offset from the bottom of the
// selection/text baseline.
const int kSelectionHandleVerticalVisualOffset = 2;
// When a handle is dragged, the drag position reported to the client view is
// offset vertically to represent the cursor position. This constant specifies
// the offset in pixels above the bottom of the selection (see pic below). This
// is required because say if this is zero, that means the drag position we
// report is right on the text baseline. In that case, a vertical movement of
// even one pixel will make the handle jump to the line below it. So when the
// user just starts dragging, the handle will jump to the next line if the user
// makes any vertical movement. So we have this non-zero offset to prevent this
// jumping.
//
// Editing handle widget showing the padding and difference between the position
// of the ET_GESTURE_SCROLL_UPDATE event and the drag position reported to the
// client:
// ___________
// Selection Highlight --->_____|__|<-|---- Drag position reported to client
// _ | O |
// Vertical Padding __| | <-|---- ET_GESTURE_SCROLL_UPDATE position
// |_ |_____|<--- Editing handle widget
//
// | |
// T
// Horizontal Padding
//
const int kSelectionHandleVerticalDragOffset = 5;
// Padding around the selection handle defining the area that will be included
// in the touch target to make dragging the handle easier (see pic above).
const int kSelectionHandleHorizPadding = 10;
const int kSelectionHandleVertPadding = 20;
const int kQuickMenuTimoutMs = 200;
const int kSelectionHandleQuickFadeDurationMs = 50;
// Minimum height for selection handle bar. If the bar height is going to be
// less than this value, handle will not be shown.
const int kSelectionHandleBarMinHeight = 5;
// Maximum amount that selection handle bar can stick out of client view's
// boundaries.
const int kSelectionHandleBarBottomAllowance = 3;
// Creates a widget to host SelectionHandleView.
views::Widget* CreateTouchSelectionPopupWidget(
gfx::NativeView context,
views::WidgetDelegate* widget_delegate) {
views::Widget* widget = new views::Widget;
views::Widget::InitParams params(views::Widget::InitParams::TYPE_POPUP);
params.opacity = views::Widget::InitParams::TRANSLUCENT_WINDOW;
params.shadow_type = views::Widget::InitParams::SHADOW_TYPE_NONE;
params.ownership = views::Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET;
params.parent = context;
params.delegate = widget_delegate;
widget->Init(params);
return widget;
}
gfx::Image* GetCenterHandleImage() {
static gfx::Image* handle_image = nullptr;
if (!handle_image) {
handle_image = &ui::ResourceBundle::GetSharedInstance().GetImageNamed(
IDR_TEXT_SELECTION_HANDLE_CENTER);
}
return handle_image;
}
gfx::Image* GetLeftHandleImage() {
static gfx::Image* handle_image = nullptr;
if (!handle_image) {
handle_image = &ui::ResourceBundle::GetSharedInstance().GetImageNamed(
IDR_TEXT_SELECTION_HANDLE_LEFT);
}
return handle_image;
}
gfx::Image* GetRightHandleImage() {
static gfx::Image* handle_image = nullptr;
if (!handle_image) {
handle_image = &ui::ResourceBundle::GetSharedInstance().GetImageNamed(
IDR_TEXT_SELECTION_HANDLE_RIGHT);
}
return handle_image;
}
// Return the appropriate handle image based on the bound's type
gfx::Image* GetHandleImage(ui::SelectionBound::Type bound_type) {
switch(bound_type) {
case ui::SelectionBound::LEFT:
return GetLeftHandleImage();
case ui::SelectionBound::CENTER:
return GetCenterHandleImage();
case ui::SelectionBound::RIGHT:
return GetRightHandleImage();
default:
NOTREACHED() << "Invalid touch handle bound type.";
return nullptr;
};
}
// Calculates the bounds of the widget containing the selection handle based
// on the SelectionBound's type and location
gfx::Rect GetSelectionWidgetBounds(const ui::SelectionBound& bound) {
gfx::Size image_size = GetHandleImage(bound.type())->Size();
int widget_width = image_size.width() + 2 * kSelectionHandleHorizPadding;
int widget_height = bound.GetHeight() + image_size.height() +
kSelectionHandleVerticalVisualOffset +
kSelectionHandleVertPadding;
// Due to the shape of the handle images, the widget is aligned differently to
// the selection bound depending on the type of the bound.
int widget_left = 0;
switch (bound.type()) {
case ui::SelectionBound::LEFT:
widget_left = bound.edge_top_rounded().x() - image_size.width() -
kSelectionHandleHorizPadding;
break;
case ui::SelectionBound::RIGHT:
widget_left = bound.edge_top_rounded().x() - kSelectionHandleHorizPadding;
break;
case ui::SelectionBound::CENTER:
widget_left = bound.edge_top_rounded().x() - widget_width / 2;
break;
default:
NOTREACHED() << "Undefined bound type.";
break;
};
return gfx::Rect(
widget_left, bound.edge_top_rounded().y(), widget_width, widget_height);
}
gfx::Size GetMaxHandleImageSize() {
gfx::Rect center_rect = gfx::Rect(GetCenterHandleImage()->Size());
gfx::Rect left_rect = gfx::Rect(GetLeftHandleImage()->Size());
gfx::Rect right_rect = gfx::Rect(GetRightHandleImage()->Size());
gfx::Rect union_rect = center_rect;
union_rect.Union(left_rect);
union_rect.Union(right_rect);
return union_rect.size();
}
// Convenience methods to convert a |bound| from screen to the |client|'s
// coordinate system and vice versa.
// Note that this is not quite correct because it does not take into account
// transforms such as rotation and scaling. This should be in TouchEditable.
// TODO(varunjain): Fix this.
ui::SelectionBound ConvertFromScreen(ui::TouchEditable* client,
const ui::SelectionBound& bound) {
ui::SelectionBound result = bound;
gfx::Point edge_bottom = bound.edge_bottom_rounded();
gfx::Point edge_top = bound.edge_top_rounded();
client->ConvertPointFromScreen(&edge_bottom);
client->ConvertPointFromScreen(&edge_top);
result.SetEdge(edge_top, edge_bottom);
return result;
}
ui::SelectionBound ConvertToScreen(ui::TouchEditable* client,
const ui::SelectionBound& bound) {
ui::SelectionBound result = bound;
gfx::Point edge_bottom = bound.edge_bottom_rounded();
gfx::Point edge_top = bound.edge_top_rounded();
client->ConvertPointToScreen(&edge_bottom);
client->ConvertPointToScreen(&edge_top);
result.SetEdge(edge_top, edge_bottom);
return result;
}
gfx::Rect BoundToRect(const ui::SelectionBound& bound) {
return gfx::BoundingRect(bound.edge_top_rounded(),
bound.edge_bottom_rounded());
}
} // namespace
namespace views {
typedef TouchSelectionControllerImpl::EditingHandleView EditingHandleView;
class TouchHandleWindowTargeter : public wm::MaskedWindowTargeter {
public:
TouchHandleWindowTargeter(aura::Window* window,
EditingHandleView* handle_view);
~TouchHandleWindowTargeter() override {}
private:
// wm::MaskedWindowTargeter:
bool GetHitTestMask(aura::Window* window, gfx::Path* mask) const override;
EditingHandleView* handle_view_;
DISALLOW_COPY_AND_ASSIGN(TouchHandleWindowTargeter);
};
// A View that displays the text selection handle.
class TouchSelectionControllerImpl::EditingHandleView
: public views::WidgetDelegateView {
public:
EditingHandleView(TouchSelectionControllerImpl* controller,
gfx::NativeView context,
bool is_cursor_handle)
: controller_(controller),
image_(GetCenterHandleImage()),
is_cursor_handle_(is_cursor_handle),
draw_invisible_(false) {
widget_.reset(CreateTouchSelectionPopupWidget(context, this));
widget_->SetContentsView(this);
aura::Window* window = widget_->GetNativeWindow();
window->SetEventTargeter(scoped_ptr<ui::EventTargeter>(
new TouchHandleWindowTargeter(window, this)));
// We are owned by the TouchSelectionControllerImpl.
set_owned_by_client();
}
~EditingHandleView() override { SetWidgetVisible(false, false); }
// Overridden from views::WidgetDelegateView:
bool WidgetHasHitTestMask() const override { return true; }
void GetWidgetHitTestMask(gfx::Path* mask) const override {
gfx::Size image_size = image_->Size();
mask->addRect(
SkIntToScalar(0),
SkIntToScalar(selection_bound_.GetHeight() +
kSelectionHandleVerticalVisualOffset),
SkIntToScalar(image_size.width()) + 2 * kSelectionHandleHorizPadding,
SkIntToScalar(selection_bound_.GetHeight() +
kSelectionHandleVerticalVisualOffset +
image_size.height() + kSelectionHandleVertPadding));
}
void DeleteDelegate() override {
// We are owned and deleted by TouchSelectionControllerImpl.
}
// Overridden from views::View:
void OnPaint(gfx::Canvas* canvas) override {
if (draw_invisible_)
return;
// Draw the handle image.
canvas->DrawImageInt(
*image_->ToImageSkia(),
kSelectionHandleHorizPadding,
selection_bound_.GetHeight() + kSelectionHandleVerticalVisualOffset);
}
void OnGestureEvent(ui::GestureEvent* event) override {
event->SetHandled();
switch (event->type()) {
case ui::ET_GESTURE_SCROLL_BEGIN: {
widget_->SetCapture(this);
controller_->SetDraggingHandle(this);
// Distance from the point which is |kSelectionHandleVerticalDragOffset|
// pixels above the bottom of the selection bound edge to the event
// location (aka the touch-drag point).
drag_offset_ = selection_bound_.edge_bottom_rounded() -
gfx::Vector2d(0, kSelectionHandleVerticalDragOffset) -
event->location();
break;
}
case ui::ET_GESTURE_SCROLL_UPDATE: {
controller_->SelectionHandleDragged(event->location() + drag_offset_);
break;
}
case ui::ET_GESTURE_SCROLL_END:
case ui::ET_SCROLL_FLING_START:
widget_->ReleaseCapture();
controller_->SetDraggingHandle(nullptr);
break;
default:
break;
}
}
gfx::Size GetPreferredSize() const override {
return GetSelectionWidgetBounds(selection_bound_).size();
}
bool IsWidgetVisible() const {
return widget_->IsVisible();
}
void SetWidgetVisible(bool visible, bool quick) {
if (widget_->IsVisible() == visible)
return;
widget_->SetVisibilityAnimationDuration(
base::TimeDelta::FromMilliseconds(
quick ? kSelectionHandleQuickFadeDurationMs : 0));
if (visible)
widget_->Show();
else
widget_->Hide();
}
void SetBoundInScreen(const ui::SelectionBound& bound) {
bool update_bound_type = false;
// Cursor handle should always have the bound type CENTER
DCHECK(!is_cursor_handle_ || bound.type() == ui::SelectionBound::CENTER);
if (bound.type() != selection_bound_.type()) {
// Unless this is a cursor handle, do not set the type to CENTER -
// selection handles corresponding to a selection should always use left
// or right handle image. If selection handles are dragged to be located
// at the same spot, the |bound|'s type here will be CENTER for both of
// them. In this case do not update the type of the |selection_bound_|.
if (bound.type() != ui::SelectionBound::CENTER || is_cursor_handle_)
update_bound_type = true;
}
if (update_bound_type) {
selection_bound_.set_type(bound.type());
image_ = GetHandleImage(bound.type());
SchedulePaint();
}
selection_bound_.SetEdge(bound.edge_top(), bound.edge_bottom());
widget_->SetBounds(GetSelectionWidgetBounds(selection_bound_));
aura::Window* window = widget_->GetNativeView();
gfx::Point edge_top = selection_bound_.edge_top_rounded();
gfx::Point edge_bottom = selection_bound_.edge_bottom_rounded();
wm::ConvertPointFromScreen(window, &edge_top);
wm::ConvertPointFromScreen(window, &edge_bottom);
selection_bound_.SetEdge(edge_top, edge_bottom);
}
void SetDrawInvisible(bool draw_invisible) {
if (draw_invisible_ == draw_invisible)
return;
draw_invisible_ = draw_invisible;
SchedulePaint();
}
private:
scoped_ptr<Widget> widget_;
TouchSelectionControllerImpl* controller_;
// In local coordinates
ui::SelectionBound selection_bound_;
gfx::Image* image_;
// If true, this is a handle corresponding to the single cursor, otherwise it
// is a handle corresponding to one of the two selection bounds.
bool is_cursor_handle_;
// Offset applied to the scroll events location when calling
// TouchSelectionControllerImpl::SelectionHandleDragged while dragging the
// handle.
gfx::Vector2d drag_offset_;
// If set to true, the handle will not draw anything, hence providing an empty
// widget. We need this because we may want to stop showing the handle while
// it is being dragged. Since it is being dragged, we cannot destroy the
// handle.
bool draw_invisible_;
DISALLOW_COPY_AND_ASSIGN(EditingHandleView);
};
TouchHandleWindowTargeter::TouchHandleWindowTargeter(
aura::Window* window,
EditingHandleView* handle_view)
: wm::MaskedWindowTargeter(window),
handle_view_(handle_view) {
}
bool TouchHandleWindowTargeter::GetHitTestMask(aura::Window* window,
gfx::Path* mask) const {
handle_view_->GetWidgetHitTestMask(mask);
return true;
}
TouchSelectionControllerImpl::TouchSelectionControllerImpl(
ui::TouchEditable* client_view)
: client_view_(client_view),
client_widget_(nullptr),
selection_handle_1_(new EditingHandleView(this,
client_view->GetNativeView(),
false)),
selection_handle_2_(new EditingHandleView(this,
client_view->GetNativeView(),
false)),
cursor_handle_(new EditingHandleView(this,
client_view->GetNativeView(),
true)),
command_executed_(false),
dragging_handle_(nullptr) {
selection_start_time_ = base::TimeTicks::Now();
aura::Window* client_window = client_view_->GetNativeView();
client_window->AddObserver(this);
client_widget_ = Widget::GetTopLevelWidgetForNativeView(client_window);
if (client_widget_)
client_widget_->AddObserver(this);
aura::Env::GetInstance()->AddPreTargetHandler(this);
}
TouchSelectionControllerImpl::~TouchSelectionControllerImpl() {
UMA_HISTOGRAM_BOOLEAN("Event.TouchSelection.EndedWithAction",
command_executed_);
HideQuickMenu();
aura::Env::GetInstance()->RemovePreTargetHandler(this);
if (client_widget_)
client_widget_->RemoveObserver(this);
client_view_->GetNativeView()->RemoveObserver(this);
}
void TouchSelectionControllerImpl::SelectionChanged() {
ui::SelectionBound anchor, focus;
client_view_->GetSelectionEndPoints(&anchor, &focus);
ui::SelectionBound screen_bound_anchor =
ConvertToScreen(client_view_, anchor);
ui::SelectionBound screen_bound_focus = ConvertToScreen(client_view_, focus);
gfx::Rect client_bounds = client_view_->GetBounds();
if (anchor.edge_top().y() < client_bounds.y()) {
gfx::Point anchor_edge_top = anchor.edge_top_rounded();
anchor_edge_top.set_y(client_bounds.y());
anchor.SetEdgeTop(anchor_edge_top);
}
if (focus.edge_top().y() < client_bounds.y()) {
gfx::Point focus_edge_top = focus.edge_top_rounded();
focus_edge_top.set_y(client_bounds.y());
focus.SetEdgeTop(focus_edge_top);
}
ui::SelectionBound screen_bound_anchor_clipped =
ConvertToScreen(client_view_, anchor);
ui::SelectionBound screen_bound_focus_clipped =
ConvertToScreen(client_view_, focus);
if (screen_bound_anchor_clipped == selection_bound_1_clipped_ &&
screen_bound_focus_clipped == selection_bound_2_clipped_)
return;
selection_bound_1_ = screen_bound_anchor;
selection_bound_2_ = screen_bound_focus;
selection_bound_1_clipped_ = screen_bound_anchor_clipped;
selection_bound_2_clipped_ = screen_bound_focus_clipped;
if (client_view_->DrawsHandles()) {
UpdateQuickMenu();
return;
}
if (dragging_handle_) {
// We need to reposition only the selection handle that is being dragged.
// The other handle stays the same. Also, the selection handle being dragged
// will always be at the end of selection, while the other handle will be at
// the start.
// If the new location of this handle is out of client view, its widget
// should not get hidden, since it should still receive touch events.
// Hence, we are not using |SetHandleBound()| method here.
dragging_handle_->SetBoundInScreen(screen_bound_focus_clipped);
// Temporary fix for selection handle going outside a window. On a webpage,
// the page should scroll if the selection handle is dragged outside the
// window. That does not happen currently. So we just hide the handle for
// now.
// TODO(varunjain): Fix this: crbug.com/269003
dragging_handle_->SetDrawInvisible(!ShouldShowHandleFor(focus));
if (dragging_handle_ != cursor_handle_.get()) {
// The non-dragging-handle might have recently become visible.
EditingHandleView* non_dragging_handle = selection_handle_1_.get();
if (dragging_handle_ == selection_handle_1_) {
non_dragging_handle = selection_handle_2_.get();
// if handle 1 is being dragged, it is corresponding to the end of
// selection and the other handle to the start of selection.
selection_bound_1_ = screen_bound_focus;
selection_bound_2_ = screen_bound_anchor;
selection_bound_1_clipped_ = screen_bound_focus_clipped;
selection_bound_2_clipped_ = screen_bound_anchor_clipped;
}
SetHandleBound(non_dragging_handle, anchor, screen_bound_anchor_clipped);
}
} else {
UpdateQuickMenu();
// Check if there is any selection at all.
if (screen_bound_anchor.edge_top() == screen_bound_focus.edge_top() &&
screen_bound_anchor.edge_bottom() == screen_bound_focus.edge_bottom()) {
selection_handle_1_->SetWidgetVisible(false, false);
selection_handle_2_->SetWidgetVisible(false, false);
SetHandleBound(cursor_handle_.get(), anchor, screen_bound_anchor_clipped);
return;
}
cursor_handle_->SetWidgetVisible(false, false);
SetHandleBound(
selection_handle_1_.get(), anchor, screen_bound_anchor_clipped);
SetHandleBound(
selection_handle_2_.get(), focus, screen_bound_focus_clipped);
}
}
bool TouchSelectionControllerImpl::IsHandleDragInProgress() {
return !!dragging_handle_;
}
void TouchSelectionControllerImpl::HideHandles(bool quick) {
selection_handle_1_->SetWidgetVisible(false, quick);
selection_handle_2_->SetWidgetVisible(false, quick);
cursor_handle_->SetWidgetVisible(false, quick);
}
void TouchSelectionControllerImpl::SetDraggingHandle(
EditingHandleView* handle) {
dragging_handle_ = handle;
if (dragging_handle_)
HideQuickMenu();
else
StartQuickMenuTimer();
}
void TouchSelectionControllerImpl::SelectionHandleDragged(
const gfx::Point& drag_pos) {
DCHECK(dragging_handle_);
gfx::Point drag_pos_in_client = drag_pos;
ConvertPointToClientView(dragging_handle_, &drag_pos_in_client);
if (dragging_handle_ == cursor_handle_.get()) {
client_view_->MoveCaretTo(drag_pos_in_client);
return;
}
// Find the stationary selection handle.
ui::SelectionBound anchor_bound =
selection_handle_1_ == dragging_handle_ ? selection_bound_2_
: selection_bound_1_;
// Find selection end points in client_view's coordinate system.
gfx::Point p2 = anchor_bound.edge_top_rounded();
p2.Offset(0, anchor_bound.GetHeight() / 2);
client_view_->ConvertPointFromScreen(&p2);
// Instruct client_view to select the region between p1 and p2. The position
// of |fixed_handle| is the start and that of |dragging_handle| is the end
// of selection.
client_view_->SelectRect(p2, drag_pos_in_client);
}
void TouchSelectionControllerImpl::ConvertPointToClientView(
EditingHandleView* source, gfx::Point* point) {
View::ConvertPointToScreen(source, point);
client_view_->ConvertPointFromScreen(point);
}
void TouchSelectionControllerImpl::SetHandleBound(
EditingHandleView* handle,
const ui::SelectionBound& bound,
const ui::SelectionBound& bound_in_screen) {
handle->SetWidgetVisible(ShouldShowHandleFor(bound), false);
if (handle->IsWidgetVisible())
handle->SetBoundInScreen(bound_in_screen);
}
bool TouchSelectionControllerImpl::ShouldShowHandleFor(
const ui::SelectionBound& bound) const {
if (bound.GetHeight() < kSelectionHandleBarMinHeight)
return false;
gfx::Rect client_bounds = client_view_->GetBounds();
client_bounds.Inset(0, 0, 0, -kSelectionHandleBarBottomAllowance);
return client_bounds.Contains(BoundToRect(bound));
}
bool TouchSelectionControllerImpl::IsCommandIdEnabled(int command_id) const {
return client_view_->IsCommandIdEnabled(command_id);
}
void TouchSelectionControllerImpl::ExecuteCommand(int command_id,
int event_flags) {
command_executed_ = true;
base::TimeDelta duration = base::TimeTicks::Now() - selection_start_time_;
// Note that we only log the duration stats for the 'successful' selections,
// i.e. selections ending with the execution of a command.
UMA_HISTOGRAM_CUSTOM_TIMES("Event.TouchSelection.Duration",
duration,
base::TimeDelta::FromMilliseconds(500),
base::TimeDelta::FromSeconds(60),
60);
client_view_->ExecuteCommand(command_id, event_flags);
}
void TouchSelectionControllerImpl::RunContextMenu() {
// Context menu should appear centered on top of the selected region.
const gfx::Rect rect = GetQuickMenuAnchorRect();
const gfx::Point anchor(rect.CenterPoint().x(), rect.y());
client_view_->OpenContextMenu(anchor);
}
void TouchSelectionControllerImpl::OnAncestorWindowTransformed(
aura::Window* window,
aura::Window* ancestor) {
client_view_->DestroyTouchSelection();
}
void TouchSelectionControllerImpl::OnWidgetClosing(Widget* widget) {
DCHECK_EQ(client_widget_, widget);
client_widget_->RemoveObserver(this);
client_widget_ = nullptr;
}
void TouchSelectionControllerImpl::OnWidgetBoundsChanged(
Widget* widget,
const gfx::Rect& new_bounds) {
DCHECK_EQ(client_widget_, widget);
SelectionChanged();
}
void TouchSelectionControllerImpl::OnKeyEvent(ui::KeyEvent* event) {
client_view_->DestroyTouchSelection();
}
void TouchSelectionControllerImpl::OnMouseEvent(ui::MouseEvent* event) {
aura::client::CursorClient* cursor_client = aura::client::GetCursorClient(
client_view_->GetNativeView()->GetRootWindow());
if (!cursor_client || cursor_client->IsMouseEventsEnabled())
client_view_->DestroyTouchSelection();
}
void TouchSelectionControllerImpl::OnScrollEvent(ui::ScrollEvent* event) {
client_view_->DestroyTouchSelection();
}
void TouchSelectionControllerImpl::QuickMenuTimerFired() {
gfx::Rect menu_anchor = GetQuickMenuAnchorRect();
if (menu_anchor == gfx::Rect())
return;
ui::TouchSelectionMenuRunner::GetInstance()->OpenMenu(
this, menu_anchor, GetMaxHandleImageSize(),
client_view_->GetNativeView());
}
void TouchSelectionControllerImpl::StartQuickMenuTimer() {
if (quick_menu_timer_.IsRunning())
return;
quick_menu_timer_.Start(
FROM_HERE,
base::TimeDelta::FromMilliseconds(kQuickMenuTimoutMs),
this,
&TouchSelectionControllerImpl::QuickMenuTimerFired);
}
void TouchSelectionControllerImpl::UpdateQuickMenu() {
// Hide quick menu to be shown when the timer fires.
HideQuickMenu();
StartQuickMenuTimer();
}
void TouchSelectionControllerImpl::HideQuickMenu() {
if (ui::TouchSelectionMenuRunner::GetInstance()->IsRunning())
ui::TouchSelectionMenuRunner::GetInstance()->CloseMenu();
quick_menu_timer_.Stop();
}
gfx::Rect TouchSelectionControllerImpl::GetQuickMenuAnchorRect() const {
// Get selection end points in client_view's space.
ui::SelectionBound b1_in_screen = selection_bound_1_clipped_;
ui::SelectionBound b2_in_screen = cursor_handle_->IsWidgetVisible()
? b1_in_screen
: selection_bound_2_clipped_;
// Convert from screen to client.
ui::SelectionBound b1 = ConvertFromScreen(client_view_, b1_in_screen);
ui::SelectionBound b2 = ConvertFromScreen(client_view_, b2_in_screen);
// if selection is completely inside the view, we display the quick menu in
// the middle of the end points on the top. Else, we show it above the visible
// handle. If no handle is visible, we do not show the menu.
gfx::Rect menu_anchor;
if (ShouldShowHandleFor(b1) && ShouldShowHandleFor(b2))
menu_anchor = ui::RectBetweenSelectionBounds(b1_in_screen, b2_in_screen);
else if (ShouldShowHandleFor(b1))
menu_anchor = BoundToRect(b1_in_screen);
else if (ShouldShowHandleFor(b2))
menu_anchor = BoundToRect(b2_in_screen);
else
return menu_anchor;
// Enlarge the anchor rect so that the menu is offset from the text at least
// by the same distance the handles are offset from the text.
menu_anchor.Inset(0, -kSelectionHandleVerticalVisualOffset);
return menu_anchor;
}
gfx::NativeView TouchSelectionControllerImpl::GetCursorHandleNativeView() {
return cursor_handle_->GetWidget()->GetNativeView();
}
gfx::Rect TouchSelectionControllerImpl::GetSelectionHandle1Bounds() {
return selection_handle_1_->GetBoundsInScreen();
}
gfx::Rect TouchSelectionControllerImpl::GetSelectionHandle2Bounds() {
return selection_handle_2_->GetBoundsInScreen();
}
gfx::Rect TouchSelectionControllerImpl::GetCursorHandleBounds() {
return cursor_handle_->GetBoundsInScreen();
}
bool TouchSelectionControllerImpl::IsSelectionHandle1Visible() {
return selection_handle_1_->IsWidgetVisible();
}
bool TouchSelectionControllerImpl::IsSelectionHandle2Visible() {
return selection_handle_2_->IsWidgetVisible();
}
bool TouchSelectionControllerImpl::IsCursorHandleVisible() {
return cursor_handle_->IsWidgetVisible();
}
gfx::Rect TouchSelectionControllerImpl::GetExpectedHandleBounds(
const ui::SelectionBound& bound) {
return GetSelectionWidgetBounds(bound);
}
views::WidgetDelegateView* TouchSelectionControllerImpl::GetHandle1View() {
return selection_handle_1_.get();
}
views::WidgetDelegateView* TouchSelectionControllerImpl::GetHandle2View() {
return selection_handle_2_.get();
}
} // namespace views
|