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 "ui/views/bubble/info_bubble.h"
6
7 #include <memory>
8
9 #include "ui/gfx/geometry/point.h"
10 #include "ui/gfx/geometry/rect.h"
11 #include "ui/gfx/geometry/size.h"
12 #include "ui/views/bubble/bubble_border.h"
13 #include "ui/views/bubble/bubble_frame_view.h"
14 #include "ui/views/controls/label.h"
15 #include "ui/views/layout/fill_layout.h"
16 #include "ui/views/layout/layout_provider.h"
17 #include "ui/views/widget/widget.h"
18
19 namespace views {
20
21 namespace {
22
23 // The visible width of bubble borders (differs from the actual width) in px.
24 constexpr int kBubbleBorderVisibleWidth = 1;
25
26 } // namespace
27
28 class InfoBubbleFrame : public BubbleFrameView {
29 public:
InfoBubbleFrame(const gfx::Insets & content_margins)30 explicit InfoBubbleFrame(const gfx::Insets& content_margins)
31 : BubbleFrameView(gfx::Insets(), content_margins) {}
32 ~InfoBubbleFrame() override = default;
33
GetAvailableScreenBounds(const gfx::Rect & rect) const34 gfx::Rect GetAvailableScreenBounds(const gfx::Rect& rect) const override {
35 return available_bounds_;
36 }
37
set_available_bounds(const gfx::Rect & available_bounds)38 void set_available_bounds(const gfx::Rect& available_bounds) {
39 available_bounds_ = available_bounds;
40 }
41
42 private:
43 // Bounds that this frame should try to keep bubbles within (screen coords).
44 gfx::Rect available_bounds_;
45
46 DISALLOW_COPY_AND_ASSIGN(InfoBubbleFrame);
47 };
48
InfoBubble(View * anchor,const base::string16 & message)49 InfoBubble::InfoBubble(View* anchor, const base::string16& message)
50 : anchor_(anchor), frame_(nullptr), preferred_width_(0) {
51 DCHECK(anchor_);
52 SetAnchorView(anchor_);
53
54 DialogDelegate::SetButtons(ui::DIALOG_BUTTON_NONE);
55
56 set_margins(LayoutProvider::Get()->GetInsetsMetric(
57 InsetsMetric::INSETS_TOOLTIP_BUBBLE));
58 SetCanActivate(false);
59
60 SetLayoutManager(std::make_unique<FillLayout>());
61 Label* label = new Label(message);
62 label->SetHorizontalAlignment(gfx::ALIGN_LEFT);
63 label->SetMultiLine(true);
64 AddChildView(label);
65 }
66
67 InfoBubble::~InfoBubble() = default;
68
Show()69 void InfoBubble::Show() {
70 widget_ = BubbleDialogDelegateView::CreateBubble(this);
71
72 UpdatePosition();
73 }
74
Hide()75 void InfoBubble::Hide() {
76 Widget* widget = GetWidget();
77 if (widget && !widget->IsClosed())
78 widget->Close();
79 }
80
CreateNonClientFrameView(Widget * widget)81 NonClientFrameView* InfoBubble::CreateNonClientFrameView(Widget* widget) {
82 DCHECK(!frame_);
83 frame_ = new InfoBubbleFrame(margins());
84 frame_->set_available_bounds(anchor_widget()->GetWindowBoundsInScreen());
85 frame_->SetBubbleBorder(
86 std::make_unique<BubbleBorder>(arrow(), GetShadow(), color()));
87 return frame_;
88 }
89
CalculatePreferredSize() const90 gfx::Size InfoBubble::CalculatePreferredSize() const {
91 if (preferred_width_ == 0)
92 return BubbleDialogDelegateView::CalculatePreferredSize();
93
94 int pref_width = preferred_width_;
95 pref_width -= frame_->GetInsets().width();
96 pref_width -= 2 * kBubbleBorderVisibleWidth;
97 return gfx::Size(pref_width, GetHeightForWidth(pref_width));
98 }
99
OnWidgetDestroyed(Widget * widget)100 void InfoBubble::OnWidgetDestroyed(Widget* widget) {
101 if (widget == widget_)
102 widget_ = nullptr;
103 }
104
OnWidgetBoundsChanged(Widget * widget,const gfx::Rect & new_bounds)105 void InfoBubble::OnWidgetBoundsChanged(Widget* widget,
106 const gfx::Rect& new_bounds) {
107 BubbleDialogDelegateView::OnWidgetBoundsChanged(widget, new_bounds);
108 if (anchor_widget() == widget)
109 frame_->set_available_bounds(widget->GetWindowBoundsInScreen());
110 }
111
UpdatePosition()112 void InfoBubble::UpdatePosition() {
113 if (!widget_)
114 return;
115
116 if (!anchor_->GetVisibleBounds().IsEmpty()) {
117 SizeToContents();
118 widget_->SetVisibilityChangedAnimationsEnabled(true);
119 widget_->ShowInactive();
120 } else {
121 widget_->SetVisibilityChangedAnimationsEnabled(false);
122 widget_->Hide();
123 }
124 }
125
126 BEGIN_METADATA(InfoBubble)
127 METADATA_PARENT_CLASS(BubbleDialogDelegateView)
128 END_METADATA()
129
130 } // namespace views
131