1 /*
2 * Copyright 2011 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 "src/base/SkUTF.h"
11 #include "src/core/SkFontPriv.h"
12 #include "tests/Test.h"
13 #include "tools/fonts/FontToolUtils.h"
14
15 #include <cstdint>
16 #include <cstring>
17 #include <string>
18
19 // Simple test to ensure that when we call textToGlyphs, we get the same
20 // result (for the same text) when using UTF8, UTF16, UTF32.
21 // TODO: make the text more complex (i.e. incorporate chars>7bits)
DEF_TEST(Unicode_textencodings,reporter)22 DEF_TEST(Unicode_textencodings, reporter) {
23 const char text8[] = "ABCDEFGabcdefg0123456789";
24 uint16_t text16[sizeof(text8)];
25 int32_t text32[sizeof(text8)];
26 size_t len8 = strlen(text8);
27 size_t len16 = len8 * 2;
28 size_t len32 = len8 * 4;
29
30 // expand our 8bit chars to 16 and 32
31 for (size_t i = 0; i < len8; ++i) {
32 text32[i] = text16[i] = text8[i];
33 }
34
35 uint16_t glyphs8[sizeof(text8)];
36 uint16_t glyphs16[sizeof(text8)];
37 uint16_t glyphs32[sizeof(text8)];
38
39 SkFont font = ToolUtils::DefaultFont();
40
41 int count8 = font.textToGlyphs(text8, len8, SkTextEncoding::kUTF8, glyphs8, std::size(glyphs8));
42 int count16 = font.textToGlyphs(text16, len16, SkTextEncoding::kUTF16, glyphs16, std::size(glyphs16));
43 int count32 = font.textToGlyphs(text32, len32, SkTextEncoding::kUTF32, glyphs32, std::size(glyphs32));
44
45 REPORTER_ASSERT(reporter, (int)len8 == count8);
46 REPORTER_ASSERT(reporter, (int)len8 == count16);
47 REPORTER_ASSERT(reporter, (int)len8 == count32);
48
49 REPORTER_ASSERT(reporter, !memcmp(glyphs8, glyphs16, count8 * sizeof(uint16_t)));
50 REPORTER_ASSERT(reporter, !memcmp(glyphs8, glyphs32, count8 * sizeof(uint16_t)));
51 }
52
DEF_TEST(glyphs_to_unichars,reporter)53 DEF_TEST(glyphs_to_unichars, reporter) {
54 SkFont font = ToolUtils::DefaultFont();
55
56 const int N = 52;
57 SkUnichar uni[N];
58 for (int i = 0; i < 26; ++i) {
59 uni[i + 0] = i + 'A';
60 uni[i + 26] = i + 'a';
61 }
62 uint16_t glyphs[N];
63 font.textToGlyphs(uni, sizeof(uni), SkTextEncoding::kUTF32, glyphs, N);
64
65 SkUnichar uni2[N];
66 SkFontPriv::GlyphsToUnichars(font, glyphs, N, uni2);
67 REPORTER_ASSERT(reporter, memcmp(uni, uni2, sizeof(uni)) == 0);
68 }
69
70