1 /*
2 * Copyright 2019 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8 #include "include/core/SkFont.h"
9 #include "include/core/SkFontTypes.h"
10 #include "include/core/SkRefCnt.h"
11 #include "include/core/SkTypeface.h"
12 #include "include/core/SkTypes.h"
13 #include "include/private/base/SkTo.h"
14 #include "src/base/SkAutoMalloc.h"
15 #include "src/core/SkFontPriv.h"
16 #include "src/core/SkPtrRecorder.h"
17 #include "src/core/SkReadBuffer.h"
18 #include "src/core/SkWriteBuffer.h"
19 #include "tests/Test.h"
20 #include "tools/ToolUtils.h"
21
22 #include <cstddef>
23
serialize_deserialize(const SkFont & font,skiatest::Reporter * reporter)24 static SkFont serialize_deserialize(const SkFont& font, skiatest::Reporter* reporter) {
25 sk_sp<SkRefCntSet> typefaces = sk_make_sp<SkRefCntSet>();
26 SkBinaryWriteBuffer wb;
27 wb.setTypefaceRecorder(typefaces);
28
29 SkFontPriv::Flatten(font, wb);
30 size_t size = wb.bytesWritten();
31 SkAutoMalloc storage(size);
32 wb.writeToMemory(storage.get());
33
34 int count = typefaces->count();
35 SkASSERT((!font.getTypeface() && count == 0) ||
36 ( font.getTypeface() && count == 1));
37 if (count) {
38 SkTypeface* typeface;
39 typefaces->copyToArray((SkRefCnt**)&typeface);
40 SkASSERT(typeface == font.getTypeface());
41 }
42
43 SkReadBuffer rb(storage.get(), size);
44 sk_sp<SkTypeface> cloneTypeface = font.refTypeface();
45 if (count) {
46 rb.setTypefaceArray(&cloneTypeface, 1);
47 }
48 SkFont clone;
49 REPORTER_ASSERT(reporter, SkFontPriv::Unflatten(&clone, rb));
50 return clone;
51 }
52
53 enum {
54 kForceAutoHinting = 1 << 0,
55 kEmbeddedBitmaps = 1 << 1,
56 kSubpixel = 1 << 2,
57 kLinearMetrics = 1 << 3,
58 kEmbolden = 1 << 4,
59 kBaselineSnap = 1 << 5,
60
61 kAllBits = 0x3F,
62 };
63
apply_flags(SkFont * font,unsigned flags)64 static void apply_flags(SkFont* font, unsigned flags) {
65 font->setForceAutoHinting(SkToBool(flags & kForceAutoHinting));
66 font->setEmbeddedBitmaps( SkToBool(flags & kEmbeddedBitmaps));
67 font->setSubpixel( SkToBool(flags & kSubpixel));
68 font->setLinearMetrics( SkToBool(flags & kLinearMetrics));
69 font->setEmbolden( SkToBool(flags & kEmbolden));
70 font->setBaselineSnap( SkToBool(flags & kBaselineSnap));
71 }
72
DEF_TEST(Font_flatten,reporter)73 DEF_TEST(Font_flatten, reporter) {
74 const float sizes[] = {0, 0.001f, 1, 10, 10.001f, 100000.01f};
75 const float scales[] = {-5, 0, 1, 5};
76 const float skews[] = {-5, 0, 5};
77 const SkFont::Edging edges[] = {
78 SkFont::Edging::kAlias, SkFont::Edging::kSubpixelAntiAlias
79 };
80 const SkFontHinting hints[] = {
81 SkFontHinting::kNone, SkFontHinting::kFull
82 };
83 const unsigned int flags[] = {
84 kForceAutoHinting, kEmbeddedBitmaps, kSubpixel, kLinearMetrics, kEmbolden, kBaselineSnap,
85 kAllBits,
86 };
87 const sk_sp<SkTypeface> typefaces[] = {
88 nullptr, ToolUtils::sample_user_typeface()
89 };
90
91 SkFont font;
92 for (float size : sizes) {
93 font.setSize(size);
94 for (float scale : scales) {
95 font.setScaleX(scale);
96 for (float skew : skews) {
97 font.setSkewX(skew);
98 for (auto edge : edges) {
99 font.setEdging(edge);
100 for (auto hint : hints) {
101 font.setHinting(hint);
102 for (auto flag : flags) {
103 apply_flags(&font, flag);
104 for (const sk_sp<SkTypeface>& typeface : typefaces) {
105 font.setTypeface(typeface);
106 SkFont clone = serialize_deserialize(font, reporter);
107 REPORTER_ASSERT(reporter, font == clone);
108 }
109 }
110 }
111 }
112 }
113 }
114 }
115 }
116