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 "ash/wm/panels/panel_layout_manager.h"
10 #include "ash/screen_util.h"
11 #include "ash/shelf/shelf.h"
12 #include "ash/shelf/shelf_layout_manager.h"
13 #include "ash/shelf/shelf_types.h"
14 #include "ash/shelf/shelf_widget.h"
15 #include "ash/shell.h"
16 #include "ash/shell_window_ids.h"
17 #include "ash/wm/window_animations.h"
18 #include "ash/wm/window_state.h"
19 #include "ash/wm/window_util.h"
20 #include "base/auto_reset.h"
21 #include "base/bind.h"
22 #include "base/bind_helpers.h"
23 #include "third_party/skia/include/core/SkColor.h"
24 #include "third_party/skia/include/core/SkPaint.h"
25 #include "third_party/skia/include/core/SkPath.h"
26 #include "ui/aura/client/activation_client.h"
27 #include "ui/aura/client/focus_client.h"
28 #include "ui/aura/client/window_tree_client.h"
29 #include "ui/aura/window.h"
30 #include "ui/aura/window_event_dispatcher.h"
31 #include "ui/aura/window_tracker.h"
32 #include "ui/compositor/scoped_layer_animation_settings.h"
33 #include "ui/gfx/canvas.h"
34 #include "ui/gfx/rect.h"
35 #include "ui/gfx/vector2d.h"
36 #include "ui/views/background.h"
37 #include "ui/views/widget/widget.h"
43 const int kPanelIdealSpacing
= 4;
45 const float kMaxHeightFactor
= .80f
;
46 const float kMaxWidthFactor
= .50f
;
48 // Duration for panel animations.
49 const int kPanelSlideDurationMilliseconds
= 50;
50 const int kCalloutFadeDurationMilliseconds
= 50;
52 // Offset used when sliding panel in/out of the shelf. Used for minimizing,
53 // restoring and the initial showing of a panel.
54 const int kPanelSlideInOffset
= 20;
56 // Callout arrow dimensions.
57 const int kArrowWidth
= 18;
58 const int kArrowHeight
= 9;
60 class CalloutWidgetBackground
: public views::Background
{
62 CalloutWidgetBackground() : alignment_(SHELF_ALIGNMENT_BOTTOM
) {
65 virtual void Paint(gfx::Canvas
* canvas
, views::View
* view
) const OVERRIDE
{
68 case SHELF_ALIGNMENT_BOTTOM
:
69 path
.moveTo(SkIntToScalar(0), SkIntToScalar(0));
70 path
.lineTo(SkIntToScalar(kArrowWidth
/ 2),
71 SkIntToScalar(kArrowHeight
));
72 path
.lineTo(SkIntToScalar(kArrowWidth
), SkIntToScalar(0));
74 case SHELF_ALIGNMENT_LEFT
:
75 path
.moveTo(SkIntToScalar(kArrowHeight
), SkIntToScalar(kArrowWidth
));
76 path
.lineTo(SkIntToScalar(0), SkIntToScalar(kArrowWidth
/ 2));
77 path
.lineTo(SkIntToScalar(kArrowHeight
), SkIntToScalar(0));
79 case SHELF_ALIGNMENT_TOP
:
80 path
.moveTo(SkIntToScalar(0), SkIntToScalar(kArrowHeight
));
81 path
.lineTo(SkIntToScalar(kArrowWidth
/ 2), SkIntToScalar(0));
82 path
.lineTo(SkIntToScalar(kArrowWidth
), SkIntToScalar(kArrowHeight
));
84 case SHELF_ALIGNMENT_RIGHT
:
85 path
.moveTo(SkIntToScalar(0), SkIntToScalar(0));
86 path
.lineTo(SkIntToScalar(kArrowHeight
),
87 SkIntToScalar(kArrowWidth
/ 2));
88 path
.lineTo(SkIntToScalar(0), SkIntToScalar(kArrowWidth
));
91 // Hard code the arrow color for now.
93 paint
.setStyle(SkPaint::kFill_Style
);
94 paint
.setColor(SkColorSetARGB(0xff, 0xe5, 0xe5, 0xe5));
95 canvas
->DrawPath(path
, paint
);
98 ShelfAlignment
alignment() {
102 void set_alignment(ShelfAlignment alignment
) {
103 alignment_
= alignment
;
107 ShelfAlignment alignment_
;
109 DISALLOW_COPY_AND_ASSIGN(CalloutWidgetBackground
);
112 struct VisiblePanelPositionInfo
{
113 VisiblePanelPositionInfo()
125 aura::Window
* window
;
129 bool CompareWindowMajor(const VisiblePanelPositionInfo
& win1
,
130 const VisiblePanelPositionInfo
& win2
) {
131 return win1
.major_pos
< win2
.major_pos
;
134 void FanOutPanels(std::vector
<VisiblePanelPositionInfo
>::iterator first
,
135 std::vector
<VisiblePanelPositionInfo
>::iterator last
) {
136 int num_panels
= last
- first
;
137 if (num_panels
== 1) {
138 (*first
).major_pos
= std::max((*first
).min_major
, std::min(
139 (*first
).max_major
, (*first
).major_pos
));
144 if (num_panels
== 2) {
145 // If there are two adjacent overlapping windows, separate them by the
146 // minimum major_length necessary.
147 std::vector
<VisiblePanelPositionInfo
>::iterator second
= first
+ 1;
148 int separation
= (*first
).major_length
/ 2 + (*second
).major_length
/ 2 +
150 int overlap
= (*first
).major_pos
+ separation
- (*second
).major_pos
;
151 (*first
).major_pos
= std::max((*first
).min_major
,
152 (*first
).major_pos
- overlap
/ 2);
153 (*second
).major_pos
= std::min((*second
).max_major
,
154 (*first
).major_pos
+ separation
);
155 // Recalculate the first panel position in case the second one was
156 // constrained on the right.
157 (*first
).major_pos
= std::max((*first
).min_major
,
158 (*second
).major_pos
- separation
);
162 // If there are more than two overlapping windows, fan them out from minimum
163 // position to maximum position equally spaced.
164 int delta
= ((*(last
- 1)).max_major
- (*first
).min_major
) / (num_panels
- 1);
165 int major_pos
= (*first
).min_major
;
166 for (std::vector
<VisiblePanelPositionInfo
>::iterator iter
= first
;
167 iter
!= last
; ++iter
) {
168 (*iter
).major_pos
= std::max((*iter
).min_major
,
169 std::min((*iter
).max_major
, major_pos
));
174 bool BoundsAdjacent(const gfx::Rect
& bounds1
, const gfx::Rect
& bounds2
) {
175 return bounds1
.x() == bounds2
.right() ||
176 bounds1
.y() == bounds2
.bottom() ||
177 bounds1
.right() == bounds2
.x() ||
178 bounds1
.bottom() == bounds2
.y();
181 gfx::Vector2d
GetSlideInAnimationOffset(ShelfAlignment alignment
) {
182 gfx::Vector2d offset
;
184 case SHELF_ALIGNMENT_BOTTOM
:
185 offset
.set_y(kPanelSlideInOffset
);
187 case SHELF_ALIGNMENT_LEFT
:
188 offset
.set_x(-kPanelSlideInOffset
);
190 case SHELF_ALIGNMENT_RIGHT
:
191 offset
.set_x(kPanelSlideInOffset
);
193 case SHELF_ALIGNMENT_TOP
:
194 offset
.set_y(-kPanelSlideInOffset
);
202 class PanelCalloutWidget
: public views::Widget
{
204 explicit PanelCalloutWidget(aura::Window
* container
)
205 : background_(NULL
) {
206 InitWidget(container
);
209 void SetAlignment(ShelfAlignment alignment
) {
210 gfx::Rect callout_bounds
= GetWindowBoundsInScreen();
211 if (alignment
== SHELF_ALIGNMENT_BOTTOM
||
212 alignment
== SHELF_ALIGNMENT_TOP
) {
213 callout_bounds
.set_width(kArrowWidth
);
214 callout_bounds
.set_height(kArrowHeight
);
216 callout_bounds
.set_width(kArrowHeight
);
217 callout_bounds
.set_height(kArrowWidth
);
219 GetNativeWindow()->SetBounds(callout_bounds
);
220 if (background_
->alignment() != alignment
) {
221 background_
->set_alignment(alignment
);
222 SchedulePaintInRect(gfx::Rect(gfx::Point(), callout_bounds
.size()));
227 void InitWidget(aura::Window
* parent
) {
228 views::Widget::InitParams params
;
229 params
.type
= views::Widget::InitParams::TYPE_POPUP
;
230 params
.opacity
= views::Widget::InitParams::TRANSLUCENT_WINDOW
;
231 params
.can_activate
= false;
232 params
.keep_on_top
= true;
233 params
.ownership
= views::Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET
;
234 params
.parent
= parent
;
235 params
.bounds
= ScreenUtil::ConvertRectToScreen(parent
, gfx::Rect());
236 params
.bounds
.set_width(kArrowWidth
);
237 params
.bounds
.set_height(kArrowHeight
);
238 // Why do we need this and can_activate = false?
239 set_focus_on_creation(false);
241 DCHECK_EQ(GetNativeView()->GetRootWindow(), parent
->GetRootWindow());
242 views::View
* content_view
= new views::View
;
243 background_
= new CalloutWidgetBackground
;
244 content_view
->set_background(background_
);
245 SetContentsView(content_view
);
246 GetNativeWindow()->layer()->SetOpacity(0);
249 // Weak pointer owned by this widget's content view.
250 CalloutWidgetBackground
* background_
;
252 DISALLOW_COPY_AND_ASSIGN(PanelCalloutWidget
);
255 ////////////////////////////////////////////////////////////////////////////////
256 // PanelLayoutManager public implementation:
257 PanelLayoutManager::PanelLayoutManager(aura::Window
* panel_container
)
258 : panel_container_(panel_container
),
259 in_add_window_(false),
261 dragged_panel_(NULL
),
263 shelf_layout_manager_(NULL
),
264 last_active_panel_(NULL
),
265 weak_factory_(this) {
266 DCHECK(panel_container
);
267 aura::client::GetActivationClient(Shell::GetPrimaryRootWindow())->
269 Shell::GetInstance()->display_controller()->AddObserver(this);
270 Shell::GetInstance()->AddShellObserver(this);
273 PanelLayoutManager::~PanelLayoutManager() {
277 void PanelLayoutManager::Shutdown() {
278 if (shelf_layout_manager_
)
279 shelf_layout_manager_
->RemoveObserver(this);
280 shelf_layout_manager_
= NULL
;
281 for (PanelList::iterator iter
= panel_windows_
.begin();
282 iter
!= panel_windows_
.end(); ++iter
) {
283 delete iter
->callout_widget
;
285 panel_windows_
.clear();
287 shelf_
->RemoveIconObserver(this);
289 aura::client::GetActivationClient(Shell::GetPrimaryRootWindow())->
290 RemoveObserver(this);
291 Shell::GetInstance()->display_controller()->RemoveObserver(this);
292 Shell::GetInstance()->RemoveShellObserver(this);
295 void PanelLayoutManager::StartDragging(aura::Window
* panel
) {
296 DCHECK(!dragged_panel_
);
297 dragged_panel_
= panel
;
301 void PanelLayoutManager::FinishDragging() {
302 dragged_panel_
= NULL
;
306 void PanelLayoutManager::SetShelf(Shelf
* shelf
) {
308 DCHECK(!shelf_layout_manager_
);
310 shelf_
->AddIconObserver(this);
311 if (shelf_
->shelf_widget()) {
312 shelf_layout_manager_
= ash::internal::ShelfLayoutManager::ForShelf(
313 shelf_
->shelf_widget()->GetNativeWindow());
314 WillChangeVisibilityState(shelf_layout_manager_
->visibility_state());
315 shelf_layout_manager_
->AddObserver(this);
319 void PanelLayoutManager::ToggleMinimize(aura::Window
* panel
) {
320 DCHECK(panel
->parent() == panel_container_
);
321 wm::WindowState
* window_state
= wm::GetWindowState(panel
);
322 if (window_state
->IsMinimized())
323 window_state
->Restore();
325 window_state
->Minimize();
328 views::Widget
* PanelLayoutManager::GetCalloutWidgetForPanel(
329 aura::Window
* panel
) {
330 DCHECK(panel
->parent() == panel_container_
);
331 PanelList::iterator found
=
332 std::find(panel_windows_
.begin(), panel_windows_
.end(), panel
);
333 DCHECK(found
!= panel_windows_
.end());
334 return found
->callout_widget
;
337 ////////////////////////////////////////////////////////////////////////////////
338 // PanelLayoutManager, aura::LayoutManager implementation:
339 void PanelLayoutManager::OnWindowResized() {
343 void PanelLayoutManager::OnWindowAddedToLayout(aura::Window
* child
) {
344 if (child
->type() == ui::wm::WINDOW_TYPE_POPUP
)
348 base::AutoReset
<bool> auto_reset_in_add_window(&in_add_window_
, true);
349 if (!wm::GetWindowState(child
)->panel_attached()) {
350 // This should only happen when a window is added to panel container as a
351 // result of bounds change from within the application during a drag.
352 // If so we have already stopped the drag and should reparent the panel
353 // back to appropriate container and ignore it.
354 // TODO(varkha): Updating bounds during a drag can cause problems and a more
355 // general solution is needed. See http://crbug.com/251813 .
356 aura::Window
* old_parent
= child
->parent();
357 aura::client::ParentWindowWithContext(
358 child
, child
, child
->GetRootWindow()->GetBoundsInScreen());
359 wm::ReparentTransientChildrenOfChild(child
, old_parent
, child
->parent());
360 DCHECK(child
->parent()->id() != kShellWindowId_PanelContainer
);
363 PanelInfo panel_info
;
364 panel_info
.window
= child
;
365 panel_info
.callout_widget
= new PanelCalloutWidget(panel_container_
);
366 if (child
!= dragged_panel_
) {
367 // Set the panel to 0 opacity until it has been positioned to prevent it
368 // from flashing briefly at position (0, 0).
369 child
->layer()->SetOpacity(0);
370 panel_info
.slide_in
= true;
372 panel_windows_
.push_back(panel_info
);
373 child
->AddObserver(this);
374 wm::GetWindowState(child
)->AddObserver(this);
378 void PanelLayoutManager::OnWillRemoveWindowFromLayout(aura::Window
* child
) {
381 void PanelLayoutManager::OnWindowRemovedFromLayout(aura::Window
* child
) {
382 if (child
->type() == ui::wm::WINDOW_TYPE_POPUP
)
384 PanelList::iterator found
=
385 std::find(panel_windows_
.begin(), panel_windows_
.end(), child
);
386 if (found
!= panel_windows_
.end()) {
387 delete found
->callout_widget
;
388 panel_windows_
.erase(found
);
390 child
->RemoveObserver(this);
391 wm::GetWindowState(child
)->RemoveObserver(this);
393 if (dragged_panel_
== child
)
394 dragged_panel_
= NULL
;
396 if (last_active_panel_
== child
)
397 last_active_panel_
= NULL
;
402 void PanelLayoutManager::OnChildWindowVisibilityChanged(aura::Window
* child
,
407 void PanelLayoutManager::SetChildBounds(aura::Window
* child
,
408 const gfx::Rect
& requested_bounds
) {
409 gfx::Rect
bounds(requested_bounds
);
410 const gfx::Rect
& max_bounds
= panel_container_
->GetRootWindow()->bounds();
411 const int max_width
= max_bounds
.width() * kMaxWidthFactor
;
412 const int max_height
= max_bounds
.height() * kMaxHeightFactor
;
413 if (bounds
.width() > max_width
)
414 bounds
.set_width(max_width
);
415 if (bounds
.height() > max_height
)
416 bounds
.set_height(max_height
);
418 // Reposition dragged panel in the panel order.
419 if (dragged_panel_
== child
) {
420 PanelList::iterator dragged_panel_iter
=
421 std::find(panel_windows_
.begin(), panel_windows_
.end(), dragged_panel_
);
422 DCHECK(dragged_panel_iter
!= panel_windows_
.end());
423 PanelList::iterator new_position
;
424 for (new_position
= panel_windows_
.begin();
425 new_position
!= panel_windows_
.end();
427 const gfx::Rect
& bounds
= (*new_position
).window
->bounds();
428 if (bounds
.x() + bounds
.width()/2 <= requested_bounds
.x()) break;
430 if (new_position
!= dragged_panel_iter
) {
431 PanelInfo dragged_panel_info
= *dragged_panel_iter
;
432 panel_windows_
.erase(dragged_panel_iter
);
433 panel_windows_
.insert(new_position
, dragged_panel_info
);
437 SetChildBoundsDirect(child
, bounds
);
441 ////////////////////////////////////////////////////////////////////////////////
442 // PanelLayoutManager, ShelfIconObserver implementation:
444 void PanelLayoutManager::OnShelfIconPositionsChanged() {
445 // TODO: As this is called for every animation step now. Relayout needs to be
446 // updated to use current icon position instead of use the ideal bounds so
447 // that the panels slide with their icons instead of jumping.
451 ////////////////////////////////////////////////////////////////////////////////
452 // PanelLayoutManager, ash::ShellObserver implementation:
454 void PanelLayoutManager::OnShelfAlignmentChanged(aura::Window
* root_window
) {
455 if (panel_container_
->GetRootWindow() == root_window
)
459 /////////////////////////////////////////////////////////////////////////////
460 // PanelLayoutManager, WindowObserver implementation:
462 void PanelLayoutManager::OnPostWindowShowTypeChange(
463 wm::WindowState
* window_state
,
464 wm::WindowShowType old_type
) {
465 // If the shelf is currently hidden then windows will not actually be shown
466 // but the set to restore when the shelf becomes visible is updated.
467 if (restore_windows_on_shelf_visible_
) {
468 if (window_state
->IsMinimized()) {
469 MinimizePanel(window_state
->window());
470 restore_windows_on_shelf_visible_
->Remove(window_state
->window());
472 restore_windows_on_shelf_visible_
->Add(window_state
->window());
477 if (window_state
->IsMinimized())
478 MinimizePanel(window_state
->window());
480 RestorePanel(window_state
->window());
483 void PanelLayoutManager::OnWindowVisibilityChanged(
484 aura::Window
* window
, bool visible
) {
486 wm::GetWindowState(window
)->Restore();
489 ////////////////////////////////////////////////////////////////////////////////
490 // PanelLayoutManager, aura::client::ActivationChangeObserver implementation:
492 void PanelLayoutManager::OnWindowActivated(aura::Window
* gained_active
,
493 aura::Window
* lost_active
) {
494 // Ignore if the panel that is not managed by this was activated.
495 if (gained_active
&& gained_active
->type() == ui::wm::WINDOW_TYPE_PANEL
&&
496 gained_active
->parent() == panel_container_
) {
497 UpdateStacking(gained_active
);
502 ////////////////////////////////////////////////////////////////////////////////
503 // PanelLayoutManager, DisplayController::Observer implementation:
505 void PanelLayoutManager::OnDisplayConfigurationChanged() {
509 ////////////////////////////////////////////////////////////////////////////////
510 // PanelLayoutManager, ShelfLayoutManagerObserver implementation:
512 void PanelLayoutManager::WillChangeVisibilityState(
513 ShelfVisibilityState new_state
) {
514 // On entering / leaving full screen mode the shelf visibility state is
515 // changed to / from SHELF_HIDDEN. In this state, panel windows should hide
516 // to allow the full-screen application to use the full screen.
517 bool shelf_hidden
= new_state
== ash::SHELF_HIDDEN
;
519 if (restore_windows_on_shelf_visible_
) {
520 scoped_ptr
<aura::WindowTracker
> restore_windows(
521 restore_windows_on_shelf_visible_
.Pass());
522 for (aura::WindowTracker::Windows::const_iterator iter
=
523 restore_windows
->windows().begin(); iter
!=
524 restore_windows
->windows().end(); ++iter
) {
531 if (restore_windows_on_shelf_visible_
)
533 scoped_ptr
<aura::WindowTracker
> minimized_windows(new aura::WindowTracker
);
534 for (PanelList::iterator iter
= panel_windows_
.begin();
535 iter
!= panel_windows_
.end(); ++iter
) {
536 if (iter
->window
->IsVisible()) {
537 minimized_windows
->Add(iter
->window
);
538 wm::GetWindowState(iter
->window
)->Minimize();
541 restore_windows_on_shelf_visible_
= minimized_windows
.Pass();
544 ////////////////////////////////////////////////////////////////////////////////
545 // PanelLayoutManager private implementation:
547 void PanelLayoutManager::MinimizePanel(aura::Window
* panel
) {
548 views::corewm::SetWindowVisibilityAnimationType(
549 panel
, WINDOW_VISIBILITY_ANIMATION_TYPE_MINIMIZE
);
550 ui::Layer
* layer
= panel
->layer();
551 ui::ScopedLayerAnimationSettings
panel_slide_settings(layer
->GetAnimator());
552 panel_slide_settings
.SetPreemptionStrategy(
553 ui::LayerAnimator::IMMEDIATELY_ANIMATE_TO_NEW_TARGET
);
554 panel_slide_settings
.SetTransitionDuration(
555 base::TimeDelta::FromMilliseconds(kPanelSlideDurationMilliseconds
));
556 gfx::Rect
bounds(panel
->bounds());
557 bounds
.Offset(GetSlideInAnimationOffset(
558 shelf_
->shelf_widget()->GetAlignment()));
559 SetChildBoundsDirect(panel
, bounds
);
561 PanelList::iterator found
=
562 std::find(panel_windows_
.begin(), panel_windows_
.end(), panel
);
563 if (found
!= panel_windows_
.end()) {
564 layer
->SetOpacity(0);
565 // The next time the window is visible it should slide into place.
566 found
->slide_in
= true;
568 if (wm::IsActiveWindow(panel
))
569 wm::DeactivateWindow(panel
);
573 void PanelLayoutManager::RestorePanel(aura::Window
* panel
) {
578 void PanelLayoutManager::Relayout() {
579 if (!shelf_
|| !shelf_
->shelf_widget())
584 base::AutoReset
<bool> auto_reset_in_layout(&in_layout_
, true);
586 ShelfAlignment alignment
= shelf_
->shelf_widget()->GetAlignment();
587 bool horizontal
= alignment
== SHELF_ALIGNMENT_TOP
||
588 alignment
== SHELF_ALIGNMENT_BOTTOM
;
589 gfx::Rect shelf_bounds
= ash::ScreenUtil::ConvertRectFromScreen(
590 panel_container_
, shelf_
->shelf_widget()->GetWindowBoundsInScreen());
591 int panel_start_bounds
= kPanelIdealSpacing
;
592 int panel_end_bounds
= horizontal
?
593 panel_container_
->bounds().width() - kPanelIdealSpacing
:
594 panel_container_
->bounds().height() - kPanelIdealSpacing
;
595 aura::Window
* active_panel
= NULL
;
596 std::vector
<VisiblePanelPositionInfo
> visible_panels
;
597 for (PanelList::iterator iter
= panel_windows_
.begin();
598 iter
!= panel_windows_
.end(); ++iter
) {
599 aura::Window
* panel
= iter
->window
;
600 iter
->callout_widget
->SetAlignment(alignment
);
602 // Consider the dragged panel as part of the layout as long as it is
603 // touching the shelf.
604 if (!panel
->IsVisible() ||
605 (panel
== dragged_panel_
&&
606 !BoundsAdjacent(panel
->bounds(), shelf_bounds
))) {
610 // If the shelf is currently hidden (full-screen mode), minimize panel until
611 // full-screen mode is exited. When a panel is dragged from another display
612 // the shelf state does not update before the panel is added so we exclude
613 // the dragged panel.
614 if (panel
!= dragged_panel_
&& restore_windows_on_shelf_visible_
) {
615 wm::GetWindowState(panel
)->Minimize();
616 restore_windows_on_shelf_visible_
->Add(panel
);
620 gfx::Rect icon_bounds
= shelf_
->GetScreenBoundsOfItemIconForWindow(panel
);
622 // If both the icon width and height are 0 then there is no icon in the
623 // shelf. If the shelf is hidden, one of the height or width will be
624 // 0 but the position in the shelf and major dimension is still reported
625 // correctly and the panel can be aligned above where the hidden icon is.
626 if (icon_bounds
.width() == 0 && icon_bounds
.height() == 0)
629 if (panel
->HasFocus() ||
631 aura::client::GetFocusClient(panel
)->GetFocusedWindow())) {
632 DCHECK(!active_panel
);
633 active_panel
= panel
;
635 icon_bounds
= ScreenUtil::ConvertRectFromScreen(panel_container_
,
637 gfx::Point icon_origin
= icon_bounds
.origin();
638 VisiblePanelPositionInfo position_info
;
639 int icon_start
= horizontal
? icon_origin
.x() : icon_origin
.y();
640 int icon_end
= icon_start
+ (horizontal
? icon_bounds
.width() :
641 icon_bounds
.height());
642 position_info
.major_length
= horizontal
?
643 panel
->bounds().width() : panel
->bounds().height();
644 position_info
.min_major
= std::max(
645 panel_start_bounds
+ position_info
.major_length
/ 2,
646 icon_end
- position_info
.major_length
/ 2);
647 position_info
.max_major
= std::min(
648 icon_start
+ position_info
.major_length
/ 2,
649 panel_end_bounds
- position_info
.major_length
/ 2);
650 position_info
.major_pos
= (icon_start
+ icon_end
) / 2;
651 position_info
.window
= panel
;
652 position_info
.slide_in
= iter
->slide_in
;
653 iter
->slide_in
= false;
654 visible_panels
.push_back(position_info
);
657 // Sort panels by their X positions and fan out groups of overlapping panels.
658 // The fan out method may result in new overlapping panels however given that
659 // the panels start at least a full panel width apart this overlap will
660 // never completely obscure a panel.
661 // TODO(flackr): Rearrange panels if new overlaps are introduced.
662 std::sort(visible_panels
.begin(), visible_panels
.end(), CompareWindowMajor
);
663 size_t first_overlapping_panel
= 0;
664 for (size_t i
= 1; i
< visible_panels
.size(); ++i
) {
665 if (visible_panels
[i
- 1].major_pos
+
666 visible_panels
[i
- 1].major_length
/ 2 < visible_panels
[i
].major_pos
-
667 visible_panels
[i
].major_length
/ 2) {
668 FanOutPanels(visible_panels
.begin() + first_overlapping_panel
,
669 visible_panels
.begin() + i
);
670 first_overlapping_panel
= i
;
673 FanOutPanels(visible_panels
.begin() + first_overlapping_panel
,
674 visible_panels
.end());
676 for (size_t i
= 0; i
< visible_panels
.size(); ++i
) {
677 if (visible_panels
[i
].window
== dragged_panel_
)
679 bool slide_in
= visible_panels
[i
].slide_in
;
680 gfx::Rect bounds
= visible_panels
[i
].window
->GetTargetBounds();
682 case SHELF_ALIGNMENT_BOTTOM
:
683 bounds
.set_y(shelf_bounds
.y() - bounds
.height());
685 case SHELF_ALIGNMENT_LEFT
:
686 bounds
.set_x(shelf_bounds
.right());
688 case SHELF_ALIGNMENT_RIGHT
:
689 bounds
.set_x(shelf_bounds
.x() - bounds
.width());
691 case SHELF_ALIGNMENT_TOP
:
692 bounds
.set_y(shelf_bounds
.bottom());
695 bool on_shelf
= visible_panels
[i
].window
->GetTargetBounds() == bounds
;
698 bounds
.set_x(visible_panels
[i
].major_pos
-
699 visible_panels
[i
].major_length
/ 2);
701 bounds
.set_y(visible_panels
[i
].major_pos
-
702 visible_panels
[i
].major_length
/ 2);
705 ui::Layer
* layer
= visible_panels
[i
].window
->layer();
707 // New windows shift up from the shelf into position.
708 gfx::Rect
initial_bounds(bounds
);
709 initial_bounds
.Offset(GetSlideInAnimationOffset(alignment
));
710 SetChildBoundsDirect(visible_panels
[i
].window
, initial_bounds
);
711 // Set on shelf so that the panel animates into its target position.
716 ui::ScopedLayerAnimationSettings
panel_slide_settings(
717 layer
->GetAnimator());
718 panel_slide_settings
.SetPreemptionStrategy(
719 ui::LayerAnimator::IMMEDIATELY_ANIMATE_TO_NEW_TARGET
);
720 panel_slide_settings
.SetTransitionDuration(
721 base::TimeDelta::FromMilliseconds(kPanelSlideDurationMilliseconds
));
722 SetChildBoundsDirect(visible_panels
[i
].window
, bounds
);
724 layer
->SetOpacity(1);
726 // If the shelf moved don't animate, move immediately to the new
728 SetChildBoundsDirect(visible_panels
[i
].window
, bounds
);
732 UpdateStacking(active_panel
);
736 void PanelLayoutManager::UpdateStacking(aura::Window
* active_panel
) {
738 if (!last_active_panel_
)
740 active_panel
= last_active_panel_
;
743 ShelfAlignment alignment
= shelf_
->alignment();
744 bool horizontal
= alignment
== SHELF_ALIGNMENT_TOP
||
745 alignment
== SHELF_ALIGNMENT_BOTTOM
;
747 // We want to to stack the panels like a deck of cards:
748 // ,--,--,--,-------.--.--.
752 // We use the middle of each panel to figure out how to stack the panels. This
753 // allows us to update the stacking when a panel is being dragged around by
754 // the titlebar--even though it doesn't update the shelf icon positions, we
755 // still want the visual effect.
756 std::map
<int, aura::Window
*> window_ordering
;
757 for (PanelList::const_iterator it
= panel_windows_
.begin();
758 it
!= panel_windows_
.end(); ++it
) {
759 gfx::Rect bounds
= it
->window
->bounds();
760 window_ordering
.insert(std::make_pair(horizontal
?
761 bounds
.x() + bounds
.width() / 2 :
762 bounds
.y() + bounds
.height() / 2,
766 aura::Window
* previous_panel
= NULL
;
767 for (std::map
<int, aura::Window
*>::const_iterator it
=
768 window_ordering
.begin();
769 it
!= window_ordering
.end() && it
->second
!= active_panel
; ++it
) {
771 panel_container_
->StackChildAbove(it
->second
, previous_panel
);
772 previous_panel
= it
->second
;
775 previous_panel
= NULL
;
776 for (std::map
<int, aura::Window
*>::const_reverse_iterator it
=
777 window_ordering
.rbegin();
778 it
!= window_ordering
.rend() && it
->second
!= active_panel
; ++it
) {
780 panel_container_
->StackChildAbove(it
->second
, previous_panel
);
781 previous_panel
= it
->second
;
784 panel_container_
->StackChildAtTop(active_panel
);
785 if (dragged_panel_
&& dragged_panel_
->parent() == panel_container_
)
786 panel_container_
->StackChildAtTop(dragged_panel_
);
787 last_active_panel_
= active_panel
;
790 void PanelLayoutManager::UpdateCallouts() {
791 ShelfAlignment alignment
= shelf_
->alignment();
792 bool horizontal
= alignment
== SHELF_ALIGNMENT_TOP
||
793 alignment
== SHELF_ALIGNMENT_BOTTOM
;
795 for (PanelList::iterator iter
= panel_windows_
.begin();
796 iter
!= panel_windows_
.end(); ++iter
) {
797 aura::Window
* panel
= iter
->window
;
798 views::Widget
* callout_widget
= iter
->callout_widget
;
800 gfx::Rect current_bounds
= panel
->GetBoundsInScreen();
801 gfx::Rect bounds
= ScreenUtil::ConvertRectToScreen(
803 panel
->GetTargetBounds());
804 gfx::Rect icon_bounds
= shelf_
->GetScreenBoundsOfItemIconForWindow(panel
);
805 if (icon_bounds
.IsEmpty() || !panel
->layer()->GetTargetVisibility() ||
806 panel
== dragged_panel_
) {
807 callout_widget
->Hide();
808 callout_widget
->GetNativeWindow()->layer()->SetOpacity(0);
812 gfx::Rect callout_bounds
= callout_widget
->GetWindowBoundsInScreen();
813 gfx::Vector2d slide_vector
= bounds
.origin() - current_bounds
.origin();
814 int slide_distance
= horizontal
? slide_vector
.x() : slide_vector
.y();
815 int distance_until_over_panel
= 0;
817 callout_bounds
.set_x(
818 icon_bounds
.x() + (icon_bounds
.width() - callout_bounds
.width()) / 2);
819 distance_until_over_panel
= std::max(
820 current_bounds
.x() - callout_bounds
.x(),
821 callout_bounds
.right() - current_bounds
.right());
823 callout_bounds
.set_y(
824 icon_bounds
.y() + (icon_bounds
.height() -
825 callout_bounds
.height()) / 2);
826 distance_until_over_panel
= std::max(
827 current_bounds
.y() - callout_bounds
.y(),
828 callout_bounds
.bottom() - current_bounds
.bottom());
831 case SHELF_ALIGNMENT_BOTTOM
:
832 callout_bounds
.set_y(bounds
.bottom());
834 case SHELF_ALIGNMENT_LEFT
:
835 callout_bounds
.set_x(bounds
.x() - callout_bounds
.width());
837 case SHELF_ALIGNMENT_RIGHT
:
838 callout_bounds
.set_x(bounds
.right());
840 case SHELF_ALIGNMENT_TOP
:
841 callout_bounds
.set_y(bounds
.y() - callout_bounds
.height());
844 callout_bounds
= ScreenUtil::ConvertRectFromScreen(
845 callout_widget
->GetNativeWindow()->parent(),
848 SetChildBoundsDirect(callout_widget
->GetNativeWindow(), callout_bounds
);
849 panel_container_
->StackChildAbove(callout_widget
->GetNativeWindow(),
851 callout_widget
->Show();
853 ui::Layer
* layer
= callout_widget
->GetNativeWindow()->layer();
854 // If the panel is not over the callout position or has just become visible
855 // then fade in the callout.
856 if ((distance_until_over_panel
> 0 || layer
->GetTargetOpacity() < 1) &&
857 panel
->layer()->GetTargetTransform().IsIdentity()) {
858 if (distance_until_over_panel
> 0 &&
859 slide_distance
>= distance_until_over_panel
) {
860 layer
->SetOpacity(0);
861 // If the panel is not yet over the callout, then delay fading in
862 // the callout until after the panel should be over it.
863 int delay
= kPanelSlideDurationMilliseconds
*
864 distance_until_over_panel
/ slide_distance
;
865 layer
->SetOpacity(0);
866 layer
->GetAnimator()->StopAnimating();
867 layer
->GetAnimator()->SchedulePauseForProperties(
868 base::TimeDelta::FromMilliseconds(delay
),
869 ui::LayerAnimationElement::OPACITY
);
872 ui::ScopedLayerAnimationSettings
callout_settings(layer
->GetAnimator());
873 callout_settings
.SetPreemptionStrategy(
874 ui::LayerAnimator::REPLACE_QUEUED_ANIMATIONS
);
875 callout_settings
.SetTransitionDuration(
876 base::TimeDelta::FromMilliseconds(
877 kCalloutFadeDurationMilliseconds
));
878 layer
->SetOpacity(1);
884 ////////////////////////////////////////////////////////////////////////////////
885 // keyboard::KeyboardControllerObserver implementation:
887 void PanelLayoutManager::OnKeyboardBoundsChanging(
888 const gfx::Rect
& keyboard_bounds
) {
889 // This bounds change will have caused a change to the Shelf which does not
890 // propogate automatically to this class, so manually recalculate bounds.
894 } // namespace internal