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 "Test.h" 9 #include "TestClassDef.h" 10 #include "SkPaint.h" 11 #include "SkUtils.h" 12 13 // Unicode Variation Selector ranges: inclusive 14 #define UVS_MIN0 0x180B 15 #define UVS_MAX0 0x180D 16 #define UVS_MIN1 0xFE00 17 #define UVS_MAX1 0xFE0F 18 #define UVS_MIN2 0xE0100 19 #define UVS_MAX2 0xE01EF 20 21 static bool isUVS(SkUnichar uni) { 22 return (uni >= UVS_MIN0 && uni <= UVS_MAX0) || 23 (uni >= UVS_MIN1 && uni <= UVS_MAX1) || 24 (uni >= UVS_MIN2 && uni <= UVS_MAX2); 25 } 26 27 static void test_uvs(skiatest::Reporter* reporter) { 28 // [min, max], [min, max] ... inclusive 29 static const SkUnichar gRanges[] = { 30 UVS_MIN0, UVS_MAX0, UVS_MIN1, UVS_MAX1, UVS_MIN2, UVS_MAX2 31 }; 32 33 for (size_t i = 0; i < SK_ARRAY_COUNT(gRanges); i += 2) { 34 for (SkUnichar uni = gRanges[i] - 8; uni <= gRanges[i+1] + 8; ++uni) { 35 bool uvs0 = isUVS(uni); 36 bool uvs1 = SkUnichar_IsVariationSelector(uni); 37 REPORTER_ASSERT(reporter, uvs0 == uvs1); 38 } 39 } 40 } 41 42 // Simple test to ensure that when we call textToGlyphs, we get the same 43 // result (for the same text) when using UTF8, UTF16, UTF32. 44 // TODO: make the text more complex (i.e. incorporate chars>7bits) 45 static void test_textencodings(skiatest::Reporter* reporter) { 46 const char text8[] = "ABCDEFGabcdefg0123456789"; 47 uint16_t text16[sizeof(text8)]; 48 int32_t text32[sizeof(text8)]; 49 size_t len8 = strlen(text8); 50 size_t len16 = len8 * 2; 51 size_t len32 = len8 * 4; 52 53 // expand our 8bit chars to 16 and 32 54 for (size_t i = 0; i < len8; ++i) { 55 text32[i] = text16[i] = text8[i]; 56 } 57 58 uint16_t glyphs8[sizeof(text8)]; 59 uint16_t glyphs16[sizeof(text8)]; 60 uint16_t glyphs32[sizeof(text8)]; 61 62 SkPaint paint; 63 64 paint.setTextEncoding(SkPaint::kUTF8_TextEncoding); 65 int count8 = paint.textToGlyphs(text8, len8, glyphs8); 66 67 paint.setTextEncoding(SkPaint::kUTF16_TextEncoding); 68 int count16 = paint.textToGlyphs(text16, len16, glyphs16); 69 70 paint.setTextEncoding(SkPaint::kUTF32_TextEncoding); 71 int count32 = paint.textToGlyphs(text32, len32, glyphs32); 72 73 REPORTER_ASSERT(reporter, (int)len8 == count8); 74 REPORTER_ASSERT(reporter, (int)len8 == count16); 75 REPORTER_ASSERT(reporter, (int)len8 == count32); 76 77 REPORTER_ASSERT(reporter, !memcmp(glyphs8, glyphs16, count8 * sizeof(uint16_t))); 78 REPORTER_ASSERT(reporter, !memcmp(glyphs8, glyphs32, count8 * sizeof(uint16_t))); 79 } 80 81 DEF_TEST(Unicode, reporter) { 82 test_uvs(reporter); 83 test_textencodings(reporter); 84 } 85
