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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/dropdown_bar_view.h" | |
6 | |
7 #include "base/macros.h" | |
8 #include "base/memory/ptr_util.h" | |
9 #include "chrome/browser/themes/theme_service.h" | |
10 #include "chrome/browser/ui/view_ids.h" | |
11 #include "chrome/browser/ui/views/frame/browser_view.h" | |
12 #include "chrome/grit/theme_resources.h" | |
13 #include "third_party/skia/include/core/SkCanvas.h" | |
14 #include "third_party/skia/include/core/SkRect.h" | |
15 #include "ui/base/resource/resource_bundle.h" | |
16 #include "ui/gfx/canvas.h" | |
17 #include "ui/gfx/image/image_skia.h" | |
18 #include "ui/views/background.h" | |
19 #include "ui/views/border.h" | |
20 #include "ui/views/painter.h" | |
21 #include "ui/views/widget/widget.h" | |
22 | |
23 namespace { | |
24 | |
25 // Background to paint toolbar background with rounded corners. | |
26 class DropdownBackground : public views::Background { | |
27 public: | |
28 explicit DropdownBackground(BrowserView* browser, | |
29 const gfx::ImageSkia* left_alpha_mask, | |
30 const gfx::ImageSkia* right_alpha_mask); | |
31 ~DropdownBackground() override {} | |
32 | |
33 // Overridden from views::Background. | |
34 void Paint(gfx::Canvas* canvas, views::View* view) const override; | |
35 | |
36 private: | |
37 BrowserView* browser_view_; | |
38 const gfx::ImageSkia* left_alpha_mask_; | |
39 const gfx::ImageSkia* right_alpha_mask_; | |
40 | |
41 DISALLOW_COPY_AND_ASSIGN(DropdownBackground); | |
42 }; | |
43 | |
44 DropdownBackground::DropdownBackground(BrowserView* browser_view, | |
45 const gfx::ImageSkia* left_alpha_mask, | |
46 const gfx::ImageSkia* right_alpha_mask) | |
47 : browser_view_(browser_view), | |
48 left_alpha_mask_(left_alpha_mask), | |
49 right_alpha_mask_(right_alpha_mask) { | |
50 } | |
51 | |
52 void DropdownBackground::Paint(gfx::Canvas* canvas, views::View* view) const { | |
53 // Find the offset from which to tile the toolbar background image. | |
54 // First, get the origin with respect to the screen. | |
55 gfx::Point origin = view->GetWidget()->GetWindowBoundsInScreen().origin(); | |
56 // Now convert from screen to parent coordinates. | |
57 views::View::ConvertPointFromScreen(browser_view_, &origin); | |
58 // Finally, calculate the background image tiling offset. | |
59 origin = browser_view_->OffsetPointForToolbarBackgroundImage(origin); | |
60 | |
61 const ui::ThemeProvider* tp = view->GetThemeProvider(); | |
62 gfx::ImageSkia background = *tp->GetImageSkiaNamed(IDR_THEME_TOOLBAR); | |
63 | |
64 int left_edge_width = left_alpha_mask_->width(); | |
65 int right_edge_width = right_alpha_mask_->width(); | |
66 int mask_height = left_alpha_mask_->height(); | |
67 int height = view->bounds().height(); | |
68 | |
69 // Stretch the middle background to cover the entire area. | |
70 canvas->TileImageInt(background, origin.x(), origin.y(), | |
71 0, 0, view->bounds().width(), height); | |
72 | |
73 SkPaint paint; | |
74 paint.setBlendMode(SkBlendMode::kDstIn); | |
75 // Draw left edge. | |
76 canvas->DrawImageInt(*left_alpha_mask_, 0, 0, left_edge_width, mask_height, | |
77 0, 0, left_edge_width, height, false, paint); | |
78 | |
79 // Draw right edge. | |
80 int x_right_edge = view->bounds().width() - right_edge_width; | |
81 canvas->DrawImageInt(*right_alpha_mask_, 0, 0, right_edge_width, | |
82 mask_height, x_right_edge, 0, right_edge_width, height, false, paint); | |
83 } | |
84 | |
85 } // namespace | |
86 | |
87 DropdownBarView::DropdownBarView(DropdownBarHost* host) : host_(host) {} | |
88 | |
89 DropdownBarView::~DropdownBarView() { | |
90 } | |
91 | |
92 //////////////////////////////////////////////////////////////////////////////// | |
93 // DropDownBarView, protected: | |
94 | |
95 void DropdownBarView::SetBackground(const gfx::ImageSkia* left_alpha_mask, | |
96 const gfx::ImageSkia* right_alpha_mask) { | |
97 set_background(new DropdownBackground(host()->browser_view(), left_alpha_mask, | |
98 right_alpha_mask)); | |
99 } | |
100 | |
101 void DropdownBarView::SetBorderFromIds(int left_border_image_id, | |
102 int middle_border_image_id, | |
103 int right_border_image_id) { | |
104 int border_image_ids[3] = {left_border_image_id, middle_border_image_id, | |
105 right_border_image_id}; | |
106 SetBorder(views::Border::CreateBorderPainter( | |
107 base::MakeUnique<views::HorizontalPainter>(border_image_ids), | |
108 gfx::Insets())); | |
109 } | |
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