1 // Copyright (c) 2010 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/chromeos/drop_shadow_label.h"
6
7 #include "base/utf_string_conversions.h"
8 #include "ui/gfx/canvas.h"
9 #include "ui/gfx/color_utils.h"
10
11 using views::Label;
12
13 namespace chromeos {
14
15 static const int kDefaultDropShadowSize = 2;
16
17 // Default color is black.
18 static const SkColor kDefaultColor = 0x000000;
19
20 static const float kShadowOpacity = 0.2;
21
DropShadowLabel()22 DropShadowLabel::DropShadowLabel() : Label() {
23 Init();
24 }
25
Init()26 void DropShadowLabel::Init() {
27 drop_shadow_size_ = kDefaultDropShadowSize;
28 }
29
SetDropShadowSize(int drop_shadow_size)30 void DropShadowLabel::SetDropShadowSize(int drop_shadow_size) {
31 if (drop_shadow_size != drop_shadow_size_) {
32 drop_shadow_size_ = drop_shadow_size;
33 invalidate_text_size();
34 SchedulePaint();
35 }
36 }
37
PaintText(gfx::Canvas * canvas,const std::wstring & text,const gfx::Rect & text_bounds,int flags)38 void DropShadowLabel::PaintText(gfx::Canvas* canvas,
39 const std::wstring& text,
40 const gfx::Rect& text_bounds,
41 int flags) {
42 if (drop_shadow_size_ > 0) {
43 SkColor color = SkColorSetARGB(kShadowOpacity * SkColorGetA(GetColor()),
44 SkColorGetR(kDefaultColor),
45 SkColorGetG(kDefaultColor),
46 SkColorGetB(kDefaultColor));
47 for (int i = 0; i < drop_shadow_size_; i++) {
48 canvas->DrawStringInt(WideToUTF16Hack(text), font(), color,
49 text_bounds.x() + i, text_bounds.y(),
50 text_bounds.width(), text_bounds.height(), flags);
51 canvas->DrawStringInt(WideToUTF16Hack(text), font(), color,
52 text_bounds.x() + i, text_bounds.y() + i,
53 text_bounds.width(), text_bounds.height(), flags);
54 canvas->DrawStringInt(WideToUTF16Hack(text), font(), color,
55 text_bounds.x(), text_bounds.y() + i,
56 text_bounds.width(), text_bounds.height(), flags);
57 }
58 }
59
60 canvas->DrawStringInt(WideToUTF16Hack(text), font(), GetColor(),
61 text_bounds.x(), text_bounds.y(),
62 text_bounds.width(), text_bounds.height(), flags);
63
64 if (HasFocus() || paint_as_focused()) {
65 gfx::Rect focus_bounds = text_bounds;
66 focus_bounds.Inset(-Label::kFocusBorderPadding,
67 -Label::kFocusBorderPadding);
68 canvas->DrawFocusRect(focus_bounds.x(), focus_bounds.y(),
69 focus_bounds.width(), focus_bounds.height());
70 }
71 }
72
GetTextSize() const73 gfx::Size DropShadowLabel::GetTextSize() const {
74 gfx::Size text_size = Label::GetTextSize();
75 text_size.SetSize(text_size.width() + drop_shadow_size_,
76 text_size.height() + drop_shadow_size_);
77 return text_size;
78 }
79
80 } // namespace chromeos
81