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/*
* Copyright 2011 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkPaint.h"
#include "SkUtils.h"
#include "Test.h"
// Unicode Variation Selector ranges: inclusive
#define UVS_MIN0 0x180B
#define UVS_MAX0 0x180D
#define UVS_MIN1 0xFE00
#define UVS_MAX1 0xFE0F
#define UVS_MIN2 0xE0100
#define UVS_MAX2 0xE01EF
static bool isUVS(SkUnichar uni) {
return (uni >= UVS_MIN0 && uni <= UVS_MAX0) ||
(uni >= UVS_MIN1 && uni <= UVS_MAX1) ||
(uni >= UVS_MIN2 && uni <= UVS_MAX2);
}
static void test_uvs(skiatest::Reporter* reporter) {
// [min, max], [min, max] ... inclusive
static const SkUnichar gRanges[] = {
UVS_MIN0, UVS_MAX0, UVS_MIN1, UVS_MAX1, UVS_MIN2, UVS_MAX2
};
for (size_t i = 0; i < SK_ARRAY_COUNT(gRanges); i += 2) {
for (SkUnichar uni = gRanges[i] - 8; uni <= gRanges[i+1] + 8; ++uni) {
bool uvs0 = isUVS(uni);
bool uvs1 = SkUnichar_IsVariationSelector(uni);
REPORTER_ASSERT(reporter, uvs0 == uvs1);
}
}
}
// Simple test to ensure that when we call textToGlyphs, we get the same
// result (for the same text) when using UTF8, UTF16, UTF32.
// TODO: make the text more complex (i.e. incorporate chars>7bits)
static void test_textencodings(skiatest::Reporter* reporter) {
const char text8[] = "ABCDEFGabcdefg0123456789";
uint16_t text16[sizeof(text8)];
int32_t text32[sizeof(text8)];
size_t len8 = strlen(text8);
size_t len16 = len8 * 2;
size_t len32 = len8 * 4;
// expand our 8bit chars to 16 and 32
for (size_t i = 0; i < len8; ++i) {
text32[i] = text16[i] = text8[i];
}
uint16_t glyphs8[sizeof(text8)];
uint16_t glyphs16[sizeof(text8)];
uint16_t glyphs32[sizeof(text8)];
SkPaint paint;
paint.setTextEncoding(SkPaint::kUTF8_TextEncoding);
int count8 = paint.textToGlyphs(text8, len8, glyphs8);
paint.setTextEncoding(SkPaint::kUTF16_TextEncoding);
int count16 = paint.textToGlyphs(text16, len16, glyphs16);
paint.setTextEncoding(SkPaint::kUTF32_TextEncoding);
int count32 = paint.textToGlyphs(text32, len32, glyphs32);
REPORTER_ASSERT(reporter, (int)len8 == count8);
REPORTER_ASSERT(reporter, (int)len8 == count16);
REPORTER_ASSERT(reporter, (int)len8 == count32);
REPORTER_ASSERT(reporter, !memcmp(glyphs8, glyphs16, count8 * sizeof(uint16_t)));
REPORTER_ASSERT(reporter, !memcmp(glyphs8, glyphs32, count8 * sizeof(uint16_t)));
}
DEF_TEST(Unicode, reporter) {
test_uvs(reporter);
test_textencodings(reporter);
}
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