FontHostTest.cpp revision fbd033d57235cfcfeb83226661da3777429bb4ce 
1/*
2 * Copyright 2012 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 "SkTypeface.h"
10#include "SkFontHost.h"
11
12//#define DUMP_TABLES
13
14#define kFontTableTag_head          SkSetFourByteTag('h', 'e', 'a', 'd')
15#define kFontTableTag_hhea          SkSetFourByteTag('h', 'h', 'e', 'a')
16#define kFontTableTag_maxp          SkSetFourByteTag('m', 'a', 'x', 'p')
17
18static const struct TagSize {
19    SkFontTableTag  fTag;
20    size_t          fSize;
21} gKnownTableSizes[] = {
22    {   kFontTableTag_head,         54 },
23    {   kFontTableTag_hhea,         36 },
24    {   kFontTableTag_maxp,         32 },
25};
26
27static void test_tables(skiatest::Reporter* reporter, SkTypeface* face) {
28    SkFontID fontID = face->uniqueID();
29
30    int count = SkFontHost::CountTables(fontID);
31
32    SkAutoTMalloc<SkFontTableTag> storage(count);
33    SkFontTableTag* tags = storage.get();
34
35    int count2 = SkFontHost::GetTableTags(fontID, tags);
36    REPORTER_ASSERT(reporter, count2 == count);
37
38    for (int i = 0; i < count; ++i) {
39        size_t size = SkFontHost::GetTableSize(fontID, tags[i]);
40        REPORTER_ASSERT(reporter, size > 0);
41
42#ifdef DUMP_TABLES
43        char name[5];
44        name[0] = (tags[i] >> 24) & 0xFF;
45        name[1] = (tags[i] >> 16) & 0xFF;
46        name[2] = (tags[i] >>  8) & 0xFF;
47        name[3] = (tags[i] >>  0) & 0xFF;
48        name[4] = 0;
49        SkDebugf("%s %d\n", name, size);
50#endif
51
52        for (size_t j = 0; j < SK_ARRAY_COUNT(gKnownTableSizes); ++j) {
53            if (gKnownTableSizes[j].fTag == tags[i]) {
54                REPORTER_ASSERT(reporter, gKnownTableSizes[j].fSize == size);
55            }
56        }
57
58        // do we get the same size from GetTableData and GetTableSize
59        {
60            SkAutoMalloc data(size);
61            size_t size2 = SkFontHost::GetTableData(fontID, tags[i], 0, size,
62                                                    data.get());
63            REPORTER_ASSERT(reporter, size2 == size);
64        }
65    }
66}
67
68static void test_tables(skiatest::Reporter* reporter) {
69    static const char* const gNames[] = {
70        NULL,   // default font
71        "Arial", "Times", "Times New Roman", "Helvetica", "Courier",
72        "Courier New",
73    };
74
75    for (size_t i = 0; i < SK_ARRAY_COUNT(gNames); ++i) {
76        SkTypeface* face = SkTypeface::CreateFromName(gNames[i],
77                                                      SkTypeface::kNormal);
78        if (face) {
79#ifdef DUMP_TABLES
80            SkDebugf("%s\n", gNames[i]);
81#endif
82            test_tables(reporter, face);
83            face->unref();
84        }
85    }
86}
87
88static void TestFontHost(skiatest::Reporter* reporter) {
89    test_tables(reporter);
90}
91
92// need tests for SkStrSearch
93
94#include "TestClassDef.h"
95DEFINE_TESTCLASS("FontHost", FontHostTestClass, TestFontHost)
96