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. 4 5#include "chrome/browser/ui/views/location_bar/icon_label_bubble_view.h" 6 7#include "base/strings/utf_string_conversions.h" 8#include "chrome/browser/ui/views/location_bar/location_bar_view.h" 9#include "ui/base/resource/resource_bundle.h" 10#include "ui/gfx/canvas.h" 11#include "ui/gfx/color_utils.h" 12#include "ui/views/controls/image_view.h" 13#include "ui/views/painter.h" 14 15 16IconLabelBubbleView::IconLabelBubbleView(const int background_images[], 17 const int hover_background_images[], 18 int contained_image, 19 const gfx::FontList& font_list, 20 SkColor text_color, 21 SkColor parent_background_color, 22 bool elide_in_middle) 23 : background_painter_( 24 views::Painter::CreateImageGridPainter(background_images)), 25 image_(new views::ImageView()), 26 label_(new views::Label(base::string16(), font_list)), 27 is_extension_icon_(false), 28 in_hover_(false) { 29 image_->SetImage( 30 ui::ResourceBundle::GetSharedInstance().GetImageSkiaNamed( 31 contained_image)); 32 33 // Disable separate hit testing for |image_|. This prevents views treating 34 // |image_| as a separate mouse hover region from |this|. 35 image_->set_interactive(false); 36 AddChildView(image_); 37 38 if (hover_background_images) { 39 hover_background_painter_.reset( 40 views::Painter::CreateImageGridPainter(hover_background_images)); 41 } 42 43 label_->SetEnabledColor(text_color); 44 // Calculate the actual background color for the label. The background images 45 // are painted atop |parent_background_color|. We grab the color of the 46 // middle pixel of the middle image of the background, which we treat as the 47 // representative color of the entire background (reasonable, given the 48 // current appearance of these images). Then we alpha-blend it over the 49 // parent background color to determine the actual color the label text will 50 // sit atop. 51 const SkBitmap& bitmap( 52 ui::ResourceBundle::GetSharedInstance().GetImageSkiaNamed( 53 background_images[4])->GetRepresentation(1.0f).sk_bitmap()); 54 SkAutoLockPixels pixel_lock(bitmap); 55 SkColor background_image_color = 56 bitmap.getColor(bitmap.width() / 2, bitmap.height() / 2); 57 // Tricky bit: We alpha blend an opaque version of |background_image_color| 58 // against |parent_background_color| using the original image grid color's 59 // alpha. This is because AlphaBlend(a, b, 255) always returns |a| unchanged 60 // even if |a| is a color with non-255 alpha. 61 label_->SetBackgroundColor( 62 color_utils::AlphaBlend(SkColorSetA(background_image_color, 255), 63 parent_background_color, 64 SkColorGetA(background_image_color))); 65 if (elide_in_middle) 66 label_->SetElideBehavior(gfx::ELIDE_MIDDLE); 67 AddChildView(label_); 68} 69 70IconLabelBubbleView::~IconLabelBubbleView() { 71} 72 73void IconLabelBubbleView::SetLabel(const base::string16& label) { 74 label_->SetText(label); 75} 76 77void IconLabelBubbleView::SetImage(const gfx::ImageSkia& image_skia) { 78 image_->SetImage(image_skia); 79} 80 81gfx::Size IconLabelBubbleView::GetPreferredSize() const { 82 // Height will be ignored by the LocationBarView. 83 return GetSizeForLabelWidth(label_->GetPreferredSize().width()); 84} 85 86void IconLabelBubbleView::Layout() { 87 image_->SetBounds(GetBubbleOuterPadding(!is_extension_icon_), 0, 88 image_->GetPreferredSize().width(), height()); 89 const int pre_label_width = GetPreLabelWidth(); 90 label_->SetBounds(pre_label_width, 0, 91 width() - pre_label_width - GetBubbleOuterPadding(false), 92 height()); 93} 94 95gfx::Size IconLabelBubbleView::GetSizeForLabelWidth(int width) const { 96 gfx::Size size(GetPreLabelWidth() + width + GetBubbleOuterPadding(false), 0); 97 size.SetToMax(background_painter_->GetMinimumSize()); 98 return size; 99} 100 101void IconLabelBubbleView::OnMouseEntered(const ui::MouseEvent& event) { 102 in_hover_ = true; 103 if (hover_background_painter_.get()) 104 SchedulePaint(); 105} 106 107void IconLabelBubbleView::OnMouseExited(const ui::MouseEvent& event) { 108 in_hover_ = false; 109 if (hover_background_painter_.get()) 110 SchedulePaint(); 111} 112 113// static 114int IconLabelBubbleView::GetBubbleOuterPadding(bool by_icon) { 115 return LocationBarView::kItemPadding - LocationBarView::kBubblePadding + 116 (by_icon ? 0 : LocationBarView::kIconInternalPadding); 117} 118 119void IconLabelBubbleView::OnPaint(gfx::Canvas* canvas) { 120 views::Painter* painter = (in_hover_ && hover_background_painter_) ? 121 hover_background_painter_.get() : background_painter_.get(); 122 painter->Paint(canvas, size()); 123} 124 125int IconLabelBubbleView::GetPreLabelWidth() const { 126 const int image_width = image_->GetPreferredSize().width(); 127 return GetBubbleOuterPadding(true) + 128 (image_width ? (image_width + LocationBarView::kItemPadding) : 0); 129} 130