1 // Copyright (c) 2012 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.
5 #include "ui/views/bubble/tray_bubble_view.h"
9 #include "third_party/skia/include/core/SkCanvas.h"
10 #include "third_party/skia/include/core/SkColor.h"
11 #include "third_party/skia/include/core/SkPaint.h"
12 #include "third_party/skia/include/core/SkPath.h"
13 #include "third_party/skia/include/effects/SkBlurImageFilter.h"
14 #include "ui/base/accessibility/accessible_view_state.h"
15 #include "ui/base/l10n/l10n_util.h"
16 #include "ui/compositor/layer.h"
17 #include "ui/compositor/layer_delegate.h"
18 #include "ui/events/event.h"
19 #include "ui/gfx/canvas.h"
20 #include "ui/gfx/insets.h"
21 #include "ui/gfx/path.h"
22 #include "ui/gfx/rect.h"
23 #include "ui/gfx/skia_util.h"
24 #include "ui/views/bubble/bubble_frame_view.h"
25 #include "ui/views/layout/box_layout.h"
26 #include "ui/views/widget/widget.h"
30 // Inset the arrow a bit from the edge.
31 const int kArrowMinOffset = 20;
32 const int kBubbleSpacing = 20;
34 // The new theme adjusts the menus / bubbles to be flush with the shelf when
35 // there is no bubble. These are the offsets which need to be applied.
36 const int kArrowOffsetTopBottom = 4;
37 const int kArrowOffsetLeft = 9;
38 const int kArrowOffsetRight = -5;
39 const int kOffsetLeftRightForTopBottomOrientation = 5;
41 // The sampling time for mouse position changes in ms - which is roughly a frame
43 const int kFrameTimeInMS = 30;
50 // Detects any mouse movement. This is needed to detect mouse movements by the
51 // user over the bubble if the bubble got created underneath the cursor.
52 class MouseMoveDetectorHost : public MouseWatcherHost {
54 MouseMoveDetectorHost();
55 virtual ~MouseMoveDetectorHost();
57 virtual bool Contains(const gfx::Point& screen_point,
58 MouseEventType type) OVERRIDE;
61 DISALLOW_COPY_AND_ASSIGN(MouseMoveDetectorHost);
64 MouseMoveDetectorHost::MouseMoveDetectorHost() {
67 MouseMoveDetectorHost::~MouseMoveDetectorHost() {
70 bool MouseMoveDetectorHost::Contains(const gfx::Point& screen_point,
71 MouseEventType type) {
75 // Custom border for TrayBubbleView. Contains special logic for GetBounds()
76 // to stack bubbles with no arrows correctly. Also calculates the arrow offset.
77 class TrayBubbleBorder : public BubbleBorder {
79 TrayBubbleBorder(View* owner,
81 TrayBubbleView::InitParams params)
82 : BubbleBorder(params.arrow, params.shadow, params.arrow_color),
85 tray_arrow_offset_(params.arrow_offset),
86 first_item_has_no_margin_(params.first_item_has_no_margin) {
87 set_alignment(params.arrow_alignment);
88 set_background_color(params.arrow_color);
89 set_paint_arrow(params.arrow_paint_type);
92 virtual ~TrayBubbleBorder() {}
94 // Overridden from BubbleBorder.
95 // Sets the bubble on top of the anchor when it has no arrow.
96 virtual gfx::Rect GetBounds(const gfx::Rect& position_relative_to,
97 const gfx::Size& contents_size) const OVERRIDE {
98 if (has_arrow(arrow())) {
100 BubbleBorder::GetBounds(position_relative_to, contents_size);
101 if (first_item_has_no_margin_) {
102 if (arrow() == BubbleBorder::BOTTOM_RIGHT ||
103 arrow() == BubbleBorder::BOTTOM_LEFT) {
104 rect.set_y(rect.y() + kArrowOffsetTopBottom);
105 int rtl_factor = base::i18n::IsRTL() ? -1 : 1;
106 rect.set_x(rect.x() +
107 rtl_factor * kOffsetLeftRightForTopBottomOrientation);
108 } else if (arrow() == BubbleBorder::LEFT_BOTTOM) {
109 rect.set_x(rect.x() + kArrowOffsetLeft);
110 } else if (arrow() == BubbleBorder::RIGHT_BOTTOM) {
111 rect.set_x(rect.x() + kArrowOffsetRight);
117 gfx::Size border_size(contents_size);
118 gfx::Insets insets = GetInsets();
119 border_size.Enlarge(insets.width(), insets.height());
120 const int x = position_relative_to.x() +
121 position_relative_to.width() / 2 - border_size.width() / 2;
122 // Position the bubble on top of the anchor.
123 const int y = position_relative_to.y() - border_size.height()
124 + insets.height() - kBubbleSpacing;
125 return gfx::Rect(x, y, border_size.width(), border_size.height());
128 void UpdateArrowOffset() {
129 int arrow_offset = 0;
130 if (arrow() == BubbleBorder::BOTTOM_RIGHT ||
131 arrow() == BubbleBorder::BOTTOM_LEFT) {
132 // Note: tray_arrow_offset_ is relative to the anchor widget.
133 if (tray_arrow_offset_ ==
134 TrayBubbleView::InitParams::kArrowDefaultOffset) {
135 arrow_offset = kArrowMinOffset;
137 const int width = owner_->GetWidget()->GetContentsView()->width();
138 gfx::Point pt(tray_arrow_offset_, 0);
139 View::ConvertPointToScreen(anchor_->GetWidget()->GetRootView(), &pt);
140 View::ConvertPointFromScreen(owner_->GetWidget()->GetRootView(), &pt);
141 arrow_offset = pt.x();
142 if (arrow() == BubbleBorder::BOTTOM_RIGHT)
143 arrow_offset = width - arrow_offset;
144 arrow_offset = std::max(arrow_offset, kArrowMinOffset);
147 if (tray_arrow_offset_ ==
148 TrayBubbleView::InitParams::kArrowDefaultOffset) {
149 arrow_offset = kArrowMinOffset;
151 gfx::Point pt(0, tray_arrow_offset_);
152 View::ConvertPointToScreen(anchor_->GetWidget()->GetRootView(), &pt);
153 View::ConvertPointFromScreen(owner_->GetWidget()->GetRootView(), &pt);
154 arrow_offset = pt.y();
155 arrow_offset = std::max(arrow_offset, kArrowMinOffset);
158 set_arrow_offset(arrow_offset);
164 const int tray_arrow_offset_;
166 // If true the first item should not get any additional spacing against the
167 // anchor (without the bubble tip the bubble should be flush to the shelf).
168 const bool first_item_has_no_margin_;
170 DISALLOW_COPY_AND_ASSIGN(TrayBubbleBorder);
173 // This mask layer clips the bubble's content so that it does not overwrite the
174 // rounded bubble corners.
175 // TODO(miket): This does not work on Windows. Implement layer masking or
176 // alternate solutions if the TrayBubbleView is needed there in the future.
177 class TrayBubbleContentMask : public ui::LayerDelegate {
179 explicit TrayBubbleContentMask(int corner_radius);
180 virtual ~TrayBubbleContentMask();
182 ui::Layer* layer() { return &layer_; }
184 // Overridden from LayerDelegate.
185 virtual void OnPaintLayer(gfx::Canvas* canvas) OVERRIDE;
186 virtual void OnDeviceScaleFactorChanged(float device_scale_factor) OVERRIDE;
187 virtual base::Closure PrepareForLayerBoundsChange() OVERRIDE;
191 SkScalar corner_radius_;
193 DISALLOW_COPY_AND_ASSIGN(TrayBubbleContentMask);
196 TrayBubbleContentMask::TrayBubbleContentMask(int corner_radius)
197 : layer_(ui::LAYER_TEXTURED),
198 corner_radius_(corner_radius) {
199 layer_.set_delegate(this);
202 TrayBubbleContentMask::~TrayBubbleContentMask() {
203 layer_.set_delegate(NULL);
206 void TrayBubbleContentMask::OnPaintLayer(gfx::Canvas* canvas) {
208 path.addRoundRect(gfx::RectToSkRect(gfx::Rect(layer()->bounds().size())),
209 corner_radius_, corner_radius_);
212 paint.setStyle(SkPaint::kFill_Style);
213 canvas->DrawPath(path, paint);
216 void TrayBubbleContentMask::OnDeviceScaleFactorChanged(
217 float device_scale_factor) {
218 // Redrawing will take care of scale factor change.
221 base::Closure TrayBubbleContentMask::PrepareForLayerBoundsChange() {
222 return base::Closure();
225 // Custom layout for the bubble-view. Does the default box-layout if there is
226 // enough height. Otherwise, makes sure the bottom rows are visible.
227 class BottomAlignedBoxLayout : public BoxLayout {
229 explicit BottomAlignedBoxLayout(TrayBubbleView* bubble_view)
230 : BoxLayout(BoxLayout::kVertical, 0, 0, 0),
231 bubble_view_(bubble_view) {
234 virtual ~BottomAlignedBoxLayout() {}
237 virtual void Layout(View* host) OVERRIDE {
238 if (host->height() >= host->GetPreferredSize().height() ||
239 !bubble_view_->is_gesture_dragging()) {
240 BoxLayout::Layout(host);
244 int consumed_height = 0;
245 for (int i = host->child_count() - 1;
246 i >= 0 && consumed_height < host->height(); --i) {
247 View* child = host->child_at(i);
248 if (!child->visible())
250 gfx::Size size = child->GetPreferredSize();
251 child->SetBounds(0, host->height() - consumed_height - size.height(),
252 host->width(), size.height());
253 consumed_height += size.height();
257 TrayBubbleView* bubble_view_;
259 DISALLOW_COPY_AND_ASSIGN(BottomAlignedBoxLayout);
262 } // namespace internal
264 using internal::TrayBubbleBorder;
265 using internal::TrayBubbleContentMask;
266 using internal::BottomAlignedBoxLayout;
269 const int TrayBubbleView::InitParams::kArrowDefaultOffset = -1;
271 TrayBubbleView::InitParams::InitParams(AnchorType anchor_type,
272 AnchorAlignment anchor_alignment,
275 : anchor_type(anchor_type),
276 anchor_alignment(anchor_alignment),
277 min_width(min_width),
278 max_width(max_width),
281 close_on_deactivate(true),
282 arrow_color(SK_ColorBLACK),
283 first_item_has_no_margin(false),
284 arrow(BubbleBorder::NONE),
285 arrow_offset(kArrowDefaultOffset),
286 arrow_paint_type(BubbleBorder::PAINT_NORMAL),
287 shadow(BubbleBorder::BIG_SHADOW),
288 arrow_alignment(BubbleBorder::ALIGN_EDGE_TO_ANCHOR_EDGE) {
292 TrayBubbleView* TrayBubbleView::Create(gfx::NativeView parent_window,
295 InitParams* init_params) {
296 // Set arrow here so that it can be passed to the BubbleView constructor.
297 if (init_params->anchor_type == ANCHOR_TYPE_TRAY) {
298 if (init_params->anchor_alignment == ANCHOR_ALIGNMENT_BOTTOM) {
299 init_params->arrow = base::i18n::IsRTL() ?
300 BubbleBorder::BOTTOM_LEFT : BubbleBorder::BOTTOM_RIGHT;
301 } else if (init_params->anchor_alignment == ANCHOR_ALIGNMENT_TOP) {
302 init_params->arrow = BubbleBorder::TOP_LEFT;
303 } else if (init_params->anchor_alignment == ANCHOR_ALIGNMENT_LEFT) {
304 init_params->arrow = BubbleBorder::LEFT_BOTTOM;
306 init_params->arrow = BubbleBorder::RIGHT_BOTTOM;
309 init_params->arrow = BubbleBorder::NONE;
312 return new TrayBubbleView(parent_window, anchor, delegate, *init_params);
315 TrayBubbleView::TrayBubbleView(gfx::NativeView parent_window,
318 const InitParams& init_params)
319 : BubbleDelegateView(anchor, init_params.arrow),
320 params_(init_params),
322 preferred_width_(init_params.min_width),
323 bubble_border_(NULL),
324 is_gesture_dragging_(false),
325 mouse_actively_entered_(false) {
326 set_parent_window(parent_window);
327 set_notify_enter_exit_on_child(true);
328 set_close_on_deactivate(init_params.close_on_deactivate);
329 set_margins(gfx::Insets());
330 bubble_border_ = new TrayBubbleBorder(this, GetAnchorView(), params_);
331 if (get_use_acceleration_when_possible()) {
332 SetPaintToLayer(true);
333 SetFillsBoundsOpaquely(true);
335 bubble_content_mask_.reset(
336 new TrayBubbleContentMask(bubble_border_->GetBorderCornerRadius()));
340 TrayBubbleView::~TrayBubbleView() {
341 mouse_watcher_.reset();
342 // Inform host items (models) that their views are being destroyed.
344 delegate_->BubbleViewDestroyed();
347 void TrayBubbleView::InitializeAndShowBubble() {
348 // Must occur after call to BubbleDelegateView::CreateBubble().
349 SetAlignment(params_.arrow_alignment);
350 bubble_border_->UpdateArrowOffset();
352 if (get_use_acceleration_when_possible())
353 layer()->parent()->SetMaskLayer(bubble_content_mask_->layer());
359 void TrayBubbleView::UpdateBubble() {
361 if (get_use_acceleration_when_possible())
362 bubble_content_mask_->layer()->SetBounds(layer()->bounds());
363 GetWidget()->GetRootView()->SchedulePaint();
366 void TrayBubbleView::SetMaxHeight(int height) {
367 params_.max_height = height;
372 void TrayBubbleView::SetWidth(int width) {
373 width = std::max(std::min(width, params_.max_width), params_.min_width);
374 if (preferred_width_ == width)
376 preferred_width_ = width;
381 void TrayBubbleView::SetArrowPaintType(
382 views::BubbleBorder::ArrowPaintType paint_type) {
383 bubble_border_->set_paint_arrow(paint_type);
386 gfx::Insets TrayBubbleView::GetBorderInsets() const {
387 return bubble_border_->GetInsets();
390 void TrayBubbleView::Init() {
391 BoxLayout* layout = new BottomAlignedBoxLayout(this);
392 layout->set_spread_blank_space(true);
393 SetLayoutManager(layout);
396 gfx::Rect TrayBubbleView::GetAnchorRect() {
399 return delegate_->GetAnchorRect(anchor_widget(),
401 params_.anchor_alignment);
404 bool TrayBubbleView::CanActivate() const {
405 return params_.can_activate;
408 NonClientFrameView* TrayBubbleView::CreateNonClientFrameView(Widget* widget) {
409 BubbleFrameView* frame = new BubbleFrameView(margins());
410 frame->SetBubbleBorder(bubble_border_);
414 bool TrayBubbleView::WidgetHasHitTestMask() const {
418 void TrayBubbleView::GetWidgetHitTestMask(gfx::Path* mask) const {
420 mask->addRect(gfx::RectToSkRect(GetBubbleFrameView()->GetContentsBounds()));
423 gfx::Size TrayBubbleView::GetPreferredSize() {
424 return gfx::Size(preferred_width_, GetHeightForWidth(preferred_width_));
427 gfx::Size TrayBubbleView::GetMaximumSize() {
428 gfx::Size size = GetPreferredSize();
429 size.set_width(params_.max_width);
433 int TrayBubbleView::GetHeightForWidth(int width) {
434 int height = GetInsets().height();
435 width = std::max(width - GetInsets().width(), 0);
436 for (int i = 0; i < child_count(); ++i) {
437 View* child = child_at(i);
438 if (child->visible())
439 height += child->GetHeightForWidth(width);
442 return (params_.max_height != 0) ?
443 std::min(height, params_.max_height) : height;
446 void TrayBubbleView::OnMouseEntered(const ui::MouseEvent& event) {
447 mouse_watcher_.reset();
448 if (delegate_ && !(event.flags() & ui::EF_IS_SYNTHESIZED)) {
449 // Coming here the user was actively moving the mouse over the bubble and
450 // we inform the delegate that we entered. This will prevent the bubble
452 delegate_->OnMouseEnteredView();
453 mouse_actively_entered_ = true;
455 // Coming here the bubble got shown and the mouse was 'accidentally' over it
456 // which is not a reason to prevent the bubble to auto close. As such we
457 // do not call the delegate, but wait for the first mouse move within the
458 // bubble. The used MouseWatcher will notify use of a movement and call
459 // |MouseMovedOutOfHost|.
460 mouse_watcher_.reset(new MouseWatcher(
461 new views::internal::MouseMoveDetectorHost(),
463 // Set the mouse sampling frequency to roughly a frame time so that the user
465 mouse_watcher_->set_notify_on_exit_time(
466 base::TimeDelta::FromMilliseconds(kFrameTimeInMS));
467 mouse_watcher_->Start();
471 void TrayBubbleView::OnMouseExited(const ui::MouseEvent& event) {
472 // If there was a mouse watcher waiting for mouse movements we disable it
473 // immediately since we now leave the bubble.
474 mouse_watcher_.reset();
475 // Do not notify the delegate of an exit if we never told it that we entered.
476 if (delegate_ && mouse_actively_entered_)
477 delegate_->OnMouseExitedView();
480 void TrayBubbleView::GetAccessibleState(ui::AccessibleViewState* state) {
481 if (delegate_ && params_.can_activate) {
482 state->role = ui::AccessibilityTypes::ROLE_WINDOW;
483 state->name = delegate_->GetAccessibleNameForBubble();
487 void TrayBubbleView::MouseMovedOutOfHost() {
488 // The mouse was accidentally over the bubble when it opened and the AutoClose
489 // logic was not activated. Now that the user did move the mouse we tell the
490 // delegate to disable AutoClose.
491 delegate_->OnMouseEnteredView();
492 mouse_actively_entered_ = true;
493 mouse_watcher_->Stop();
496 void TrayBubbleView::ChildPreferredSizeChanged(View* child) {
500 void TrayBubbleView::ViewHierarchyChanged(
501 const ViewHierarchyChangedDetails& details) {
502 if (get_use_acceleration_when_possible() && details.is_add &&
503 details.child == this) {
504 details.parent->SetPaintToLayer(true);
505 details.parent->SetFillsBoundsOpaquely(true);
506 details.parent->layer()->SetMasksToBounds(true);