1// Copyright (c) 2011 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#ifndef CHROME_BROWSER_UI_VIEWS_BUBBLE_BORDER_CONTENTS_H_
6#define CHROME_BROWSER_UI_VIEWS_BUBBLE_BORDER_CONTENTS_H_
7#pragma once
8
9#include "chrome/browser/ui/views/bubble/bubble_border.h"
10#include "third_party/skia/include/core/SkColor.h"
11#include "views/view.h"
12
13// This is used to paint the border of the Bubble. Windows uses this via
14// BorderWidgetWin, while others can use it directly in the bubble.
15class BorderContents : public views::View {
16 public:
17  BorderContents() : bubble_border_(NULL) { }
18
19  // Must be called before this object can be used.
20  void Init();
21
22  // Sets the background color.
23  void SetBackgroundColor(SkColor color);
24
25  // Given the size of the contents and the rect to point at, returns the bounds
26  // of both the border and the contents inside the bubble.
27  // |arrow_location| specifies the preferred location for the arrow
28  // anchor. If the bubble does not fit on the monitor and
29  // |allow_bubble_offscreen| is false, the arrow location may change so the
30  // bubble shows entirely.
31  virtual void SizeAndGetBounds(
32      const gfx::Rect& position_relative_to,  // In screen coordinates
33      BubbleBorder::ArrowLocation arrow_location,
34      bool allow_bubble_offscreen,
35      const gfx::Size& contents_size,
36      gfx::Rect* contents_bounds,             // Returned in window coordinates
37      gfx::Rect* window_bounds);              // Returned in screen coordinates
38
39 protected:
40  virtual ~BorderContents() { }
41
42  // Returns the bounds for the monitor showing the specified |rect|.
43  // Overridden in unit-tests.
44  virtual gfx::Rect GetMonitorBounds(const gfx::Rect& rect);
45
46  // Margins between the contents and the inside of the border, in pixels.
47  static const int kLeftMargin = 6;
48  static const int kTopMargin = 6;
49  static const int kRightMargin = 6;
50  static const int kBottomMargin = 9;
51
52  BubbleBorder* bubble_border_;
53
54 private:
55  // Changes |arrow_location| to its mirrored version, vertically if |vertical|
56  // is true, horizontally otherwise, if |window_bounds| don't fit in
57  // |monitor_bounds|.
58  void MirrorArrowIfOffScreen(bool vertical,
59                              const gfx::Rect& position_relative_to,
60                              const gfx::Rect& monitor_bounds,
61                              const gfx::Size& local_contents_size,
62                              BubbleBorder::ArrowLocation* arrow_location,
63                              gfx::Rect* window_bounds);
64
65  // Computes how much |window_bounds| is off-screen of the monitor bounds
66  // |monitor_bounds| and puts the values in |offscreen_insets|.
67  // Returns false if |window_bounds| is actually contained in |monitor_bounds|,
68  // in which case |offscreen_insets| is not modified.
69  static bool ComputeOffScreenInsets(const gfx::Rect& monitor_bounds,
70                                     const gfx::Rect& window_bounds,
71                                     gfx::Insets* offscreen_insets);
72
73  // Convenience method that returns the height of |insets| if |vertical| is
74  // true, its width otherwise.
75  static int GetInsetsLength(const gfx::Insets& insets, bool vertical);
76
77  DISALLOW_COPY_AND_ASSIGN(BorderContents);
78};
79
80#endif  // CHROME_BROWSER_UI_VIEWS_BUBBLE_BORDER_CONTENTS_H_
81