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
|
/*
* Copyright 2018 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "gm.h"
#include "sk_tool_utils.h"
#include "Resources.h"
#include "SkCanvas.h"
#include "SkStream.h"
#include "SkTypeface.h"
namespace skiagm {
class ScaledEmojiGM : public GM {
public:
ScaledEmojiGM() { }
protected:
struct EmojiFont {
sk_sp<SkTypeface> fTypeface;
const char* fText;
} fEmojiFont;
void onOnceBeforeDraw() override {
fEmojiFont.fTypeface = sk_tool_utils::emoji_typeface();
fEmojiFont.fText = sk_tool_utils::emoji_sample_text();
}
SkString onShortName() override {
SkString name("scaledemoji");
name.append(sk_tool_utils::platform_font_manager());
return name;
}
SkISize onISize() override { return SkISize::Make(1200, 1200); }
void onDraw(SkCanvas* canvas) override {
canvas->drawColor(sk_tool_utils::color_to_565(SK_ColorGRAY));
SkPaint paint;
paint.setTypeface(fEmojiFont.fTypeface);
const char* text = fEmojiFont.fText;
// draw text at different point sizes
// Testing GPU bitmap path, SDF path with no scaling,
// SDF path with scaling, path rendering with scaling
SkPaint::FontMetrics metrics;
SkScalar y = 0;
for (SkScalar textSize : { 70, 180, 270, 340 }) {
paint.setTextSize(textSize);
paint.getFontMetrics(&metrics);
y += -metrics.fAscent;
canvas->drawString(text, 10, y, paint);
y += metrics.fDescent + metrics.fLeading;
}
}
private:
typedef GM INHERITED;
};
class ScaledEmojiPosGM : public GM {
public:
ScaledEmojiPosGM() {}
protected:
struct EmojiFont {
sk_sp<SkTypeface> fTypeface;
const char* fText;
} fEmojiFont;
void onOnceBeforeDraw() override {
fEmojiFont.fTypeface = sk_tool_utils::emoji_typeface();
fEmojiFont.fText = sk_tool_utils::emoji_sample_text();
}
SkString onShortName() override {
SkString name("scaledemojipos");
name.append(sk_tool_utils::platform_font_manager());
return name;
}
SkISize onISize() override { return SkISize::Make(1200, 1200); }
void onDraw(SkCanvas* canvas) override {
canvas->drawColor(sk_tool_utils::color_to_565(SK_ColorGRAY));
SkPaint paint;
paint.setTypeface(fEmojiFont.fTypeface);
const char* text = fEmojiFont.fText;
// draw text at different point sizes
// Testing GPU bitmap path, SDF path with no scaling,
// SDF path with scaling, path rendering with scaling
SkPaint::FontMetrics metrics;
SkScalar y = 0;
for (SkScalar textSize : { 70, 180, 270, 340 }) {
paint.setTextSize(textSize);
paint.getFontMetrics(&metrics);
y += -metrics.fAscent;
int len = SkToInt(strlen(text));
SkAutoTArray<SkPoint> pos(len);
SkAutoTArray<SkScalar> widths(len);
paint.getTextWidths(text, len, &widths[0]);
SkScalar x = SkIntToScalar(10);
for (int i = 0; i < len; ++i) {
pos[i].set(x, y);
x += widths[i];
}
canvas->drawPosText(text, len, &pos[0], paint);
y += metrics.fDescent + metrics.fLeading;
}
}
private:
typedef GM INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
DEF_GM(return new ScaledEmojiGM;)
DEF_GM(return new ScaledEmojiPosGM;)
}
|
