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