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 "chrome/browser/ui/views/location_bar/icon_label_bubble_view.h"
7 #include "base/strings/utf_string_conversions.h"
8 #include "chrome/browser/ui/views/location_bar/location_bar_view.h"
9 #include "grit/theme_resources.h"
10 #include "ui/base/resource/resource_bundle.h"
11 #include "ui/gfx/canvas.h"
12 #include "ui/gfx/color_utils.h"
13 #include "ui/views/controls/image_view.h"
14 #include "ui/views/controls/label.h"
15 #include "ui/views/painter.h"
18 IconLabelBubbleView::IconLabelBubbleView(const int background_images
[],
19 const int hover_background_images
[],
21 const gfx::FontList
& font_list
,
23 SkColor parent_background_color
,
25 : background_painter_(
26 views::Painter::CreateImageGridPainter(background_images
)),
27 image_(new views::ImageView()),
28 label_(new views::Label(base::string16(), font_list
)),
29 is_extension_icon_(false),
32 ui::ResourceBundle::GetSharedInstance().GetImageSkiaNamed(
35 // Disable separate hit testing for |image_|. This prevents views treating
36 // |image_| as a separate mouse hover region from |this|.
37 image_
->set_interactive(false);
40 if (hover_background_images
) {
41 hover_background_painter_
.reset(
42 views::Painter::CreateImageGridPainter(hover_background_images
));
45 label_
->SetEnabledColor(text_color
);
46 // Calculate the actual background color for the label. The background images
47 // are painted atop |parent_background_color|. We grab the color of the
48 // middle pixel of the middle image of the background, which we treat as the
49 // representative color of the entire background (reasonable, given the
50 // current appearance of these images). Then we alpha-blend it over the
51 // parent background color to determine the actual color the label text will
53 const SkBitmap
& bitmap(
54 ui::ResourceBundle::GetSharedInstance().GetImageSkiaNamed(
55 background_images
[4])->GetRepresentation(1.0f
).sk_bitmap());
56 SkAutoLockPixels
pixel_lock(bitmap
);
57 SkColor background_image_color
=
58 bitmap
.getColor(bitmap
.width() / 2, bitmap
.height() / 2);
59 // Tricky bit: We alpha blend an opaque version of |background_image_color|
60 // against |parent_background_color| using the original image grid color's
61 // alpha. This is because AlphaBlend(a, b, 255) always returns |a| unchanged
62 // even if |a| is a color with non-255 alpha.
63 label_
->SetBackgroundColor(
64 color_utils::AlphaBlend(SkColorSetA(background_image_color
, 255),
65 parent_background_color
,
66 SkColorGetA(background_image_color
)));
68 label_
->SetElideBehavior(views::Label::ELIDE_IN_MIDDLE
);
72 IconLabelBubbleView::~IconLabelBubbleView() {
75 void IconLabelBubbleView::SetLabel(const base::string16
& label
) {
76 label_
->SetText(label
);
79 void IconLabelBubbleView::SetImage(const gfx::ImageSkia
& image_skia
) {
80 image_
->SetImage(image_skia
);
83 gfx::Size
IconLabelBubbleView::GetPreferredSize() {
84 // Height will be ignored by the LocationBarView.
85 return GetSizeForLabelWidth(label_
->GetPreferredSize().width());
88 void IconLabelBubbleView::Layout() {
89 image_
->SetBounds(GetBubbleOuterPadding(!is_extension_icon_
), 0,
90 image_
->GetPreferredSize().width(), height());
91 const int pre_label_width
= GetPreLabelWidth();
92 label_
->SetBounds(pre_label_width
, 0,
93 width() - pre_label_width
- GetBubbleOuterPadding(false),
97 gfx::Size
IconLabelBubbleView::GetSizeForLabelWidth(int width
) const {
98 gfx::Size
size(GetPreLabelWidth() + width
+ GetBubbleOuterPadding(false), 0);
99 size
.SetToMax(background_painter_
->GetMinimumSize());
103 void IconLabelBubbleView::OnMouseEntered(const ui::MouseEvent
& event
) {
105 if (hover_background_painter_
.get())
109 void IconLabelBubbleView::OnMouseExited(const ui::MouseEvent
& event
) {
111 if (hover_background_painter_
.get())
116 int IconLabelBubbleView::GetBubbleOuterPadding(bool by_icon
) {
117 return LocationBarView::GetItemPadding() - LocationBarView::kBubblePadding
+
118 (by_icon
? 0 : LocationBarView::kIconInternalPadding
);
121 void IconLabelBubbleView::OnPaint(gfx::Canvas
* canvas
) {
122 views::Painter
* painter
= (in_hover_
&& hover_background_painter_
) ?
123 hover_background_painter_
.get() : background_painter_
.get();
124 painter
->Paint(canvas
, size());
127 int IconLabelBubbleView::GetPreLabelWidth() const {
128 const int image_width
= image_
->GetPreferredSize().width();
129 return GetBubbleOuterPadding(true) +
130 (image_width
? (image_width
+ LocationBarView::GetItemPadding()) : 0);