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
|
// Copyright (c) 2010 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 "gfx/platform_font_mac.h"
#include <Cocoa/Cocoa.h>
#include "base/basictypes.h"
#include "base/scoped_nsobject.h"
#include "base/sys_string_conversions.h"
#include "gfx/canvas_skia.h"
#include "gfx/font.h"
namespace gfx {
////////////////////////////////////////////////////////////////////////////////
// PlatformFontMac, public:
PlatformFontMac::PlatformFontMac() {
font_size_ = [NSFont systemFontSize];
style_ = gfx::Font::NORMAL;
NSFont* system_font = [NSFont systemFontOfSize:font_size_];
font_name_ = base::SysNSStringToWide([system_font fontName]);
CalculateMetrics();
}
PlatformFontMac::PlatformFontMac(const Font& other) {
}
PlatformFontMac::PlatformFontMac(NativeFont native_font) {
}
PlatformFontMac::PlatformFontMac(const std::wstring& font_name,
int font_size) {
InitWithNameSizeAndStyle(font_name, font_size, gfx::Font::NORMAL);
}
////////////////////////////////////////////////////////////////////////////////
// PlatformFontMac, PlatformFont implementation:
Font PlatformFontMac::DeriveFont(int size_delta, int style) const {
return Font(new PlatformFontMac(font_name_, font_size_ + size_delta, style));
}
int PlatformFontMac::GetHeight() const {
return height_;
}
int PlatformFontMac::GetBaseline() const {
return ascent_;
}
int PlatformFontMac::GetAverageCharacterWidth() const {
return average_width_;
}
int PlatformFontMac::GetStringWidth(const std::wstring& text) const {
int width = 0, height = 0;
CanvasSkia::SizeStringInt(text, Font(const_cast<PlatformFontMac*>(this)),
&width, &height, gfx::Canvas::NO_ELLIPSIS);
return width;
}
int PlatformFontMac::GetExpectedTextWidth(int length) const {
return length * average_width_;
}
int PlatformFontMac::GetStyle() const {
return style_;
}
const std::wstring& PlatformFontMac::GetFontName() const {
return font_name_;
}
int PlatformFontMac::GetFontSize() const {
return font_size_;
}
NativeFont PlatformFontMac::GetNativeFont() const {
// TODO(pinkerton): apply |style_| to font. http://crbug.com/34667
// We could cache this, but then we'd have to conditionally change the
// dtor just for MacOS. Not sure if we want to/need to do that.
return [NSFont fontWithName:base::SysWideToNSString(font_name_)
size:font_size_];
}
////////////////////////////////////////////////////////////////////////////////
// PlatformFontMac, private:
PlatformFontMac::PlatformFontMac(const std::wstring& font_name,
int font_size,
int style) {
InitWithNameSizeAndStyle(font_name, font_size, style);
}
void PlatformFontMac::InitWithNameSizeAndStyle(const std::wstring& font_name,
int font_size,
int style) {
font_name_ = font_name;
font_size_ = font_size;
style_ = style;
CalculateMetrics();
}
void PlatformFontMac::CalculateMetrics() {
NSFont* font = GetNativeFont();
scoped_nsobject<NSLayoutManager> layout_manager(
[[NSLayoutManager alloc] init]);
height_ = [layout_manager defaultLineHeightForFont:font];
ascent_ = [font ascender];
average_width_ =
[font boundingRectForGlyph:[font glyphWithName:@"x"]].size.width;
}
////////////////////////////////////////////////////////////////////////////////
// PlatformFont, public:
// static
PlatformFont* PlatformFont::CreateDefault() {
return new PlatformFontMac;
}
// static
PlatformFont* PlatformFont::CreateFromFont(const Font& other) {
return new PlatformFontMac(other);
}
// static
PlatformFont* PlatformFont::CreateFromNativeFont(NativeFont native_font) {
return new PlatformFontMac(native_font);
}
// static
PlatformFont* PlatformFont::CreateFromNameAndSize(const std::wstring& font_name,
int font_size) {
return new PlatformFontMac(font_name, font_size);
}
} // namespace gfx
|
