1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
|
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/chromeos/login/rounded_rect_painter.h"
#include "base/logging.h"
#include "chrome/browser/chromeos/login/helper.h"
#include "third_party/skia/include/effects/SkBlurMaskFilter.h"
#include "third_party/skia/include/effects/SkGradientShader.h"
#include "ui/gfx/canvas.h"
#include "ui/gfx/skia_util.h"
#include "ui/views/border.h"
#include "ui/views/painter.h"
namespace chromeos {
namespace {
const SkColor kScreenTopColor = SkColorSetRGB(250, 251, 251);
const SkColor kScreenBottomColor = SkColorSetRGB(204, 209, 212);
const SkColor kScreenShadowColor = SkColorSetARGB(64, 34, 54, 115);
const int kScreenShadow = 10;
void DrawRoundedRect(gfx::Canvas* canvas,
const SkRect& rect,
int corner_radius,
SkColor top_color,
SkColor bottom_color) {
SkPath path;
path.addRoundRect(rect,
SkIntToScalar(corner_radius), SkIntToScalar(corner_radius));
SkPaint paint;
paint.setStyle(SkPaint::kFill_Style);
paint.setFlags(SkPaint::kAntiAlias_Flag);
if (top_color != bottom_color) {
SkPoint p[2];
p[0].set(SkIntToScalar(rect.left()), SkIntToScalar(rect.top()));
p[1].set(SkIntToScalar(rect.left()), SkIntToScalar(rect.bottom()));
SkColor colors[2] = { top_color, bottom_color };
SkShader* s = SkGradientShader::CreateLinear(p, colors, NULL, 2,
SkShader::kClamp_TileMode, NULL);
paint.setShader(s);
// Need to unref shader, otherwise never deleted.
s->unref();
} else {
paint.setColor(top_color);
}
canvas->DrawPath(path, paint);
}
void DrawRoundedRectShadow(gfx::Canvas* canvas,
const SkRect& rect,
int corner_radius,
int shadow,
SkColor color) {
SkPaint paint;
paint.setFlags(SkPaint::kAntiAlias_Flag);
paint.setStyle(SkPaint::kFill_Style);
paint.setColor(color);
SkMaskFilter* filter = SkBlurMaskFilter::Create(
shadow / 2, SkBlurMaskFilter::kNormal_BlurStyle);
paint.setMaskFilter(filter)->unref();
SkRect inset_rect(rect);
inset_rect.inset(SkIntToScalar(shadow / 2), SkIntToScalar(shadow / 2));
canvas->sk_canvas()->drawRoundRect(
inset_rect,
SkIntToScalar(corner_radius), SkIntToScalar(corner_radius),
paint);
paint.setMaskFilter(NULL);
}
void DrawRectWithBorder(gfx::Canvas* canvas,
const gfx::Size& size,
const BorderDefinition* const border) {
SkRect rect(gfx::RectToSkRect(gfx::Rect(size)));
if (border->padding > 0) {
SkPaint paint;
paint.setColor(border->padding_color);
canvas->sk_canvas()->drawRect(rect, paint);
rect.inset(SkIntToScalar(border->padding), SkIntToScalar(border->padding));
}
if (border->shadow > 0) {
DrawRoundedRectShadow(canvas, rect, border->corner_radius, border->shadow,
border->shadow_color);
rect.inset(SkIntToScalar(border->shadow), SkIntToScalar(border->shadow));
rect.offset(0, SkIntToScalar(-border->shadow / 3));
}
DrawRoundedRect(canvas, rect, border->corner_radius, border->top_color,
border->bottom_color);
}
// This Painter can be used to draw a background consistent cross all login
// screens. It draws a rect with padding, shadow and rounded corners.
class RoundedRectPainter : public views::Painter {
public:
explicit RoundedRectPainter(const BorderDefinition* const border)
: border_(border) {
}
// Overridden from views::Painter:
virtual void Paint(gfx::Canvas* canvas, const gfx::Size& size) OVERRIDE {
DrawRectWithBorder(canvas, size, border_);
}
private:
const BorderDefinition* const border_;
DISALLOW_COPY_AND_ASSIGN(RoundedRectPainter);
};
// This border can be used to draw shadow and rounded corners across all
// login screens.
class RoundedRectBorder : public views::Border {
public:
explicit RoundedRectBorder(const BorderDefinition* const border)
: border_(border) {
}
virtual void Paint(const views::View& view, gfx::Canvas* canvas) const;
virtual void GetInsets(gfx::Insets* insets) const;
private:
const BorderDefinition* const border_;
DISALLOW_COPY_AND_ASSIGN(RoundedRectBorder);
};
void RoundedRectBorder::Paint(const views::View& view,
gfx::Canvas* canvas) const {
// Don't paint anything. RoundedRectBorder is used to provide insets only.
}
void RoundedRectBorder::GetInsets(gfx::Insets* insets) const {
DCHECK(insets);
int shadow = border_->shadow;
int inset = border_->corner_radius / 2 + border_->padding + shadow;
insets->Set(inset - shadow / 3, inset, inset + shadow / 3, inset);
}
// Simple solid round background.
class RoundedBackground : public views::Background {
public:
RoundedBackground(int corner_radius,
int stroke_width,
SkColor background_color,
SkColor stroke_color)
: corner_radius_(corner_radius),
stroke_width_(stroke_width),
stroke_color_(stroke_color) {
SetNativeControlColor(background_color);
}
virtual void Paint(gfx::Canvas* canvas, views::View* view) const {
SkRect rect;
rect.iset(0, 0, view->width(), view->height());
SkPath path;
path.addRoundRect(rect,
SkIntToScalar(corner_radius_),
SkIntToScalar(corner_radius_));
// Draw interior.
SkPaint paint;
paint.setStyle(SkPaint::kFill_Style);
paint.setFlags(SkPaint::kAntiAlias_Flag);
paint.setColor(get_color());
canvas->DrawPath(path, paint);
// Redraw boundary region with correspoinding color.
paint.setStyle(SkPaint::kStroke_Style);
paint.setStrokeWidth(SkIntToScalar(stroke_width_));
paint.setColor(stroke_color_);
canvas->DrawPath(path, paint);
}
private:
int corner_radius_;
int stroke_width_;
SkColor stroke_color_;
DISALLOW_COPY_AND_ASSIGN(RoundedBackground);
};
} // namespace
// static
const BorderDefinition BorderDefinition::kScreenBorder = {
0,
SK_ColorBLACK,
kScreenShadow,
kScreenShadowColor,
login::kScreenCornerRadius,
kScreenTopColor,
kScreenBottomColor
};
const BorderDefinition BorderDefinition::kUserBorder = {
0,
SK_ColorBLACK,
0,
kScreenShadowColor,
login::kUserCornerRadius,
kScreenTopColor,
kScreenBottomColor
};
views::Painter* CreateWizardPainter(const BorderDefinition* const border) {
return new RoundedRectPainter(border);
}
views::Border* CreateWizardBorder(const BorderDefinition* const border) {
return new RoundedRectBorder(border);
}
views::Background* CreateRoundedBackground(int corner_radius,
int stroke_width,
SkColor background_color,
SkColor stroke_color) {
return new RoundedBackground(
corner_radius, stroke_width, background_color, stroke_color);
}
} // namespace chromeos
|
