forked from chromium/chromium
-
Notifications
You must be signed in to change notification settings - Fork 0
/
border.cc
258 lines (200 loc) · 7.56 KB
/
border.cc
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
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
// 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 "ui/views/border.h"
#include <memory>
#include "base/logging.h"
#include "base/macros.h"
#include "base/memory/ptr_util.h"
#include "third_party/skia/include/core/SkPaint.h"
#include "ui/gfx/canvas.h"
#include "ui/gfx/geometry/rect_f.h"
#include "ui/views/painter.h"
#include "ui/views/view.h"
namespace views {
namespace {
// A simple border with different thicknesses on each side and single color.
class SolidSidedBorder : public Border {
public:
SolidSidedBorder(const gfx::Insets& insets, SkColor color);
// Overridden from Border:
void Paint(const View& view, gfx::Canvas* canvas) override;
gfx::Insets GetInsets() const override;
gfx::Size GetMinimumSize() const override;
private:
const gfx::Insets insets_;
const SkColor color_;
DISALLOW_COPY_AND_ASSIGN(SolidSidedBorder);
};
SolidSidedBorder::SolidSidedBorder(const gfx::Insets& insets, SkColor color)
: insets_(insets),
color_(color) {
}
void SolidSidedBorder::Paint(const View& view, gfx::Canvas* canvas) {
// Top border.
canvas->FillRect(gfx::Rect(0, 0, view.width(), insets_.top()), color_);
// Left border.
canvas->FillRect(gfx::Rect(0, insets_.top(), insets_.left(),
view.height() - insets_.height()), color_);
// Bottom border.
canvas->FillRect(gfx::Rect(0, view.height() - insets_.bottom(), view.width(),
insets_.bottom()), color_);
// Right border.
canvas->FillRect(gfx::Rect(view.width() - insets_.right(), insets_.top(),
insets_.right(), view.height() - insets_.height()),
color_);
}
gfx::Insets SolidSidedBorder::GetInsets() const {
return insets_;
}
gfx::Size SolidSidedBorder::GetMinimumSize() const {
return gfx::Size(insets_.width(), insets_.height());
}
// A border with a rounded rectangle and single color.
class RoundedRectBorder : public Border {
public:
RoundedRectBorder(int thickness, int corner_radius, SkColor color);
// Overridden from Border:
void Paint(const View& view, gfx::Canvas* canvas) override;
gfx::Insets GetInsets() const override;
gfx::Size GetMinimumSize() const override;
private:
const int thickness_;
const int corner_radius_;
const SkColor color_;
DISALLOW_COPY_AND_ASSIGN(RoundedRectBorder);
};
RoundedRectBorder::RoundedRectBorder(int thickness,
int corner_radius,
SkColor color)
: thickness_(thickness), corner_radius_(corner_radius), color_(color) {}
void RoundedRectBorder::Paint(const View& view, gfx::Canvas* canvas) {
SkPaint paint;
paint.setStrokeWidth(thickness_);
paint.setColor(color_);
paint.setStyle(SkPaint::kStroke_Style);
paint.setAntiAlias(true);
float half_thickness = thickness_ / 2.0f;
gfx::RectF bounds(view.GetLocalBounds());
bounds.Inset(half_thickness, half_thickness);
canvas->DrawRoundRect(bounds, corner_radius_, paint);
}
gfx::Insets RoundedRectBorder::GetInsets() const {
return gfx::Insets(thickness_);
}
gfx::Size RoundedRectBorder::GetMinimumSize() const {
return gfx::Size(thickness_ * 2, thickness_ * 2);
}
class EmptyBorder : public Border {
public:
explicit EmptyBorder(const gfx::Insets& insets);
// Overridden from Border:
void Paint(const View& view, gfx::Canvas* canvas) override;
gfx::Insets GetInsets() const override ;
gfx::Size GetMinimumSize() const override;
private:
const gfx::Insets insets_;
DISALLOW_COPY_AND_ASSIGN(EmptyBorder);
};
EmptyBorder::EmptyBorder(const gfx::Insets& insets) : insets_(insets) {
}
void EmptyBorder::Paint(const View& view, gfx::Canvas* canvas) {
}
gfx::Insets EmptyBorder::GetInsets() const {
return insets_;
}
gfx::Size EmptyBorder::GetMinimumSize() const {
return gfx::Size();
}
class ExtraInsetsBorder : public Border {
public:
ExtraInsetsBorder(std::unique_ptr<Border> border, const gfx::Insets& insets);
// Overridden from Border:
void Paint(const View& view, gfx::Canvas* canvas) override;
gfx::Insets GetInsets() const override;
gfx::Size GetMinimumSize() const override;
private:
std::unique_ptr<Border> border_;
const gfx::Insets extra_insets_;
DISALLOW_COPY_AND_ASSIGN(ExtraInsetsBorder);
};
ExtraInsetsBorder::ExtraInsetsBorder(std::unique_ptr<Border> border,
const gfx::Insets& insets)
: border_(std::move(border)), extra_insets_(insets) {}
void ExtraInsetsBorder::Paint(const View& view, gfx::Canvas* canvas) {
border_->Paint(view, canvas);
}
gfx::Insets ExtraInsetsBorder::GetInsets() const {
return border_->GetInsets() + extra_insets_;
}
gfx::Size ExtraInsetsBorder::GetMinimumSize() const {
gfx::Size size = border_->GetMinimumSize();
size.Enlarge(extra_insets_.width(), extra_insets_.height());
return size;
}
class BorderPainter : public Border {
public:
BorderPainter(std::unique_ptr<Painter> painter, const gfx::Insets& insets);
// Overridden from Border:
void Paint(const View& view, gfx::Canvas* canvas) override;
gfx::Insets GetInsets() const override;
gfx::Size GetMinimumSize() const override;
private:
std::unique_ptr<Painter> painter_;
const gfx::Insets insets_;
DISALLOW_COPY_AND_ASSIGN(BorderPainter);
};
BorderPainter::BorderPainter(std::unique_ptr<Painter> painter,
const gfx::Insets& insets)
: painter_(std::move(painter)), insets_(insets) {
DCHECK(painter_);
}
void BorderPainter::Paint(const View& view, gfx::Canvas* canvas) {
Painter::PaintPainterAt(canvas, painter_.get(), view.GetLocalBounds());
}
gfx::Insets BorderPainter::GetInsets() const {
return insets_;
}
gfx::Size BorderPainter::GetMinimumSize() const {
return painter_->GetMinimumSize();
}
} // namespace
Border::Border() {}
Border::~Border() {}
std::unique_ptr<Border> NullBorder() {
return nullptr;
}
std::unique_ptr<Border> CreateSolidBorder(int thickness, SkColor color) {
return base::MakeUnique<SolidSidedBorder>(gfx::Insets(thickness), color);
}
std::unique_ptr<Border> CreateEmptyBorder(const gfx::Insets& insets) {
return base::MakeUnique<EmptyBorder>(insets);
}
std::unique_ptr<Border> CreateRoundedRectBorder(int thickness,
int corner_radius,
SkColor color) {
return base::MakeUnique<RoundedRectBorder>(thickness, corner_radius, color);
}
std::unique_ptr<Border> CreateEmptyBorder(int top,
int left,
int bottom,
int right) {
return CreateEmptyBorder(gfx::Insets(top, left, bottom, right));
}
std::unique_ptr<Border> CreateSolidSidedBorder(int top,
int left,
int bottom,
int right,
SkColor color) {
return base::MakeUnique<SolidSidedBorder>(
gfx::Insets(top, left, bottom, right), color);
}
std::unique_ptr<Border> CreatePaddedBorder(std::unique_ptr<Border> border,
const gfx::Insets& insets) {
return base::MakeUnique<ExtraInsetsBorder>(std::move(border), insets);
}
std::unique_ptr<Border> CreateBorderPainter(std::unique_ptr<Painter> painter,
const gfx::Insets& insets) {
return base::WrapUnique(new BorderPainter(std::move(painter), insets));
}
} // namespace views