benjaminwagner | f6bfccd | 2016-02-25 10:28:11 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2011-2016 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 | |
Hal Canary | 95e3c05 | 2017-01-11 12:44:43 -0500 | [diff] [blame] | 8 | #include "SkAutoMalloc.h" |
Mike Reed | da1b99f | 2018-12-02 22:21:14 -0500 | [diff] [blame] | 9 | #include "SkFont.h" |
benjaminwagner | f6bfccd | 2016-02-25 10:28:11 -0800 | [diff] [blame] | 10 | #include "Test.h" |
| 11 | |
Mike Reed | 70fbc36 | 2018-12-05 05:34:58 -0500 | [diff] [blame] | 12 | static void test_monotonic(skiatest::Reporter* reporter, const SkFont& font, const char* msg) { |
benjaminwagner | f6bfccd | 2016-02-25 10:28:11 -0800 | [diff] [blame] | 13 | const char* text = "sdfkljAKLDFJKEWkldfjlk#$%&sdfs.dsj"; |
| 14 | const size_t length = strlen(text); |
Mike Reed | 70fbc36 | 2018-12-05 05:34:58 -0500 | [diff] [blame] | 15 | const SkScalar width = font.measureText(text, length, kUTF8_SkTextEncoding); |
benjaminwagner | f6bfccd | 2016-02-25 10:28:11 -0800 | [diff] [blame] | 16 | |
| 17 | SkScalar mm = 0; |
| 18 | size_t nn = 0; |
| 19 | const SkScalar step = SkMaxScalar(width / 10, SK_Scalar1); |
| 20 | for (SkScalar w = 0; w <= width; w += step) { |
| 21 | SkScalar m; |
Mike Reed | 70fbc36 | 2018-12-05 05:34:58 -0500 | [diff] [blame] | 22 | const size_t n = font.breakText(text, length, kUTF8_SkTextEncoding, w, &m); |
benjaminwagner | f6bfccd | 2016-02-25 10:28:11 -0800 | [diff] [blame] | 23 | |
Brian Salomon | 1c80e99 | 2018-01-29 09:50:47 -0500 | [diff] [blame] | 24 | REPORTER_ASSERT(reporter, n <= length, msg); |
| 25 | REPORTER_ASSERT(reporter, m <= width, msg); |
benjaminwagner | f6bfccd | 2016-02-25 10:28:11 -0800 | [diff] [blame] | 26 | |
| 27 | if (n == 0) { |
Brian Salomon | 1c80e99 | 2018-01-29 09:50:47 -0500 | [diff] [blame] | 28 | REPORTER_ASSERT(reporter, m == 0, msg); |
benjaminwagner | f6bfccd | 2016-02-25 10:28:11 -0800 | [diff] [blame] | 29 | } else { |
| 30 | // now assert that we're monotonic |
| 31 | if (n == nn) { |
Brian Salomon | 1c80e99 | 2018-01-29 09:50:47 -0500 | [diff] [blame] | 32 | REPORTER_ASSERT(reporter, m == mm, msg); |
benjaminwagner | f6bfccd | 2016-02-25 10:28:11 -0800 | [diff] [blame] | 33 | } else { |
Brian Salomon | 1c80e99 | 2018-01-29 09:50:47 -0500 | [diff] [blame] | 34 | REPORTER_ASSERT(reporter, n > nn, msg); |
| 35 | REPORTER_ASSERT(reporter, m > mm, msg); |
benjaminwagner | f6bfccd | 2016-02-25 10:28:11 -0800 | [diff] [blame] | 36 | } |
| 37 | } |
| 38 | nn = n; |
| 39 | mm = m; |
| 40 | } |
| 41 | } |
| 42 | |
Mike Reed | 70fbc36 | 2018-12-05 05:34:58 -0500 | [diff] [blame] | 43 | static void test_eq_measure_text(skiatest::Reporter* reporter, const SkFont& font, |
benjaminwagner | f6bfccd | 2016-02-25 10:28:11 -0800 | [diff] [blame] | 44 | const char* msg) { |
| 45 | const char* text = "The ultimate measure of a man is not where he stands in moments of comfort " |
| 46 | "and convenience, but where he stands at times of challenge and controversy."; |
| 47 | const size_t length = strlen(text); |
Mike Reed | 70fbc36 | 2018-12-05 05:34:58 -0500 | [diff] [blame] | 48 | const SkScalar width = font.measureText(text, length, kUTF8_SkTextEncoding); |
benjaminwagner | f6bfccd | 2016-02-25 10:28:11 -0800 | [diff] [blame] | 49 | |
| 50 | SkScalar mm; |
Mike Reed | 70fbc36 | 2018-12-05 05:34:58 -0500 | [diff] [blame] | 51 | const size_t length2 = font.breakText(text, length, kUTF8_SkTextEncoding, width, &mm); |
Brian Salomon | 1c80e99 | 2018-01-29 09:50:47 -0500 | [diff] [blame] | 52 | REPORTER_ASSERT(reporter, length2 == length, msg); |
| 53 | REPORTER_ASSERT(reporter, mm == width, msg); |
benjaminwagner | f6bfccd | 2016-02-25 10:28:11 -0800 | [diff] [blame] | 54 | } |
| 55 | |
Mike Reed | 70fbc36 | 2018-12-05 05:34:58 -0500 | [diff] [blame] | 56 | static void test_long_text(skiatest::Reporter* reporter, const SkFont& font, const char* msg) { |
benjaminwagner | f6bfccd | 2016-02-25 10:28:11 -0800 | [diff] [blame] | 57 | static const int kSize = 16 * 1024; |
| 58 | SkAutoMalloc block(kSize); |
| 59 | memset(block.get(), 'a', kSize - 1); |
| 60 | char* text = static_cast<char*>(block.get()); |
| 61 | text[kSize - 1] = '\0'; |
Mike Reed | 70fbc36 | 2018-12-05 05:34:58 -0500 | [diff] [blame] | 62 | const SkScalar width = font.measureText(text, kSize, kUTF8_SkTextEncoding); |
benjaminwagner | f6bfccd | 2016-02-25 10:28:11 -0800 | [diff] [blame] | 63 | |
| 64 | SkScalar mm; |
Mike Reed | 70fbc36 | 2018-12-05 05:34:58 -0500 | [diff] [blame] | 65 | const size_t length = font.breakText(text, kSize, kUTF8_SkTextEncoding, width, &mm); |
Brian Salomon | 1c80e99 | 2018-01-29 09:50:47 -0500 | [diff] [blame] | 66 | REPORTER_ASSERT(reporter, length == kSize, msg); |
| 67 | REPORTER_ASSERT(reporter, mm == width, msg); |
benjaminwagner | f6bfccd | 2016-02-25 10:28:11 -0800 | [diff] [blame] | 68 | } |
| 69 | |
| 70 | DEF_TEST(PaintBreakText, reporter) { |
Mike Reed | 70fbc36 | 2018-12-05 05:34:58 -0500 | [diff] [blame] | 71 | SkFont font; |
| 72 | test_monotonic(reporter, font, "default"); |
| 73 | test_eq_measure_text(reporter, font, "default"); |
| 74 | test_long_text(reporter, font, "default"); |
| 75 | font.setSize(SkIntToScalar(1 << 17)); |
| 76 | test_monotonic(reporter, font, "huge text size"); |
| 77 | test_eq_measure_text(reporter, font, "huge text size"); |
| 78 | font.setSize(0); |
| 79 | test_monotonic(reporter, font, "zero text size"); |
benjaminwagner | f6bfccd | 2016-02-25 10:28:11 -0800 | [diff] [blame] | 80 | } |