aboutsummaryrefslogtreecommitdiffhomepage
path: root/tests/PDFDocumentTest.cpp
blob: 995e35f8c0381b9ca1881cd827c156e4e846c0ad (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
/*
 * Copyright 2013 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */
#include "Test.h"

#include "Resources.h"
#include "SkCanvas.h"
#include "SkDocument.h"
#include "SkOSFile.h"
#include "SkStream.h"
#include "SkPixelSerializer.h"

static void test_empty(skiatest::Reporter* reporter) {
    SkDynamicMemoryWStream stream;

    SkAutoTUnref<SkDocument> doc(SkDocument::CreatePDF(&stream));

    doc->close();

    REPORTER_ASSERT(reporter, stream.bytesWritten() == 0);
}

static void test_abort(skiatest::Reporter* reporter) {
    SkDynamicMemoryWStream stream;
    SkAutoTUnref<SkDocument> doc(SkDocument::CreatePDF(&stream));

    SkCanvas* canvas = doc->beginPage(100, 100);
    canvas->drawColor(SK_ColorRED);
    doc->endPage();

    doc->abort();

    REPORTER_ASSERT(reporter, stream.bytesWritten() == 0);
}

static void test_abortWithFile(skiatest::Reporter* reporter) {
    SkString tmpDir = skiatest::GetTmpDir();

    if (tmpDir.isEmpty()) {
        return;  // TODO(edisonn): unfortunatelly this pattern is used in other
                 // tests, but if GetTmpDir() starts returning and empty dir
                 // allways, then all these tests will be disabled.
    }

    SkString path = SkOSPath::Join(tmpDir.c_str(), "aborted.pdf");

    // Make sure doc's destructor is called to flush.
    {
        SkAutoTUnref<SkDocument> doc(SkDocument::CreatePDF(path.c_str()));

        SkCanvas* canvas = doc->beginPage(100, 100);
        canvas->drawColor(SK_ColorRED);
        doc->endPage();

        doc->abort();
    }

    FILE* file = fopen(path.c_str(), "r");
    // The created file should be empty.
    char buffer[100];
    REPORTER_ASSERT(reporter, fread(buffer, 1, 1, file) == 0);
    fclose(file);
}

static void test_file(skiatest::Reporter* reporter) {
    SkString tmpDir = skiatest::GetTmpDir();
    if (tmpDir.isEmpty()) {
        return;  // TODO(edisonn): unfortunatelly this pattern is used in other
                 // tests, but if GetTmpDir() starts returning and empty dir
                 // allways, then all these tests will be disabled.
    }

    SkString path = SkOSPath::Join(tmpDir.c_str(), "file.pdf");

    SkAutoTUnref<SkDocument> doc(SkDocument::CreatePDF(path.c_str()));

    SkCanvas* canvas = doc->beginPage(100, 100);

    canvas->drawColor(SK_ColorRED);
    doc->endPage();
    doc->close();

    FILE* file = fopen(path.c_str(), "r");
    REPORTER_ASSERT(reporter, file != nullptr);
    char header[100];
    REPORTER_ASSERT(reporter, fread(header, 4, 1, file) != 0);
    REPORTER_ASSERT(reporter, strncmp(header, "%PDF", 4) == 0);
    fclose(file);
}

static void test_close(skiatest::Reporter* reporter) {
    SkDynamicMemoryWStream stream;
    SkAutoTUnref<SkDocument> doc(SkDocument::CreatePDF(&stream));

    SkCanvas* canvas = doc->beginPage(100, 100);
    canvas->drawColor(SK_ColorRED);
    doc->endPage();

    doc->close();

    REPORTER_ASSERT(reporter, stream.bytesWritten() != 0);
}

DEF_TEST(document_tests, reporter) {
    REQUIRE_PDF_DOCUMENT(document_tests, reporter);
    test_empty(reporter);
    test_abort(reporter);
    test_abortWithFile(reporter);
    test_file(reporter);
    test_close(reporter);
}

namespace {
class JPEGSerializer final : public SkPixelSerializer {
    bool onUseEncodedData(const void*, size_t) override { return true; }
    SkData* onEncode(const SkPixmap& pixmap) override {
        SkBitmap bm;
        return bm.installPixels(pixmap.info(),
                                pixmap.writable_addr(),
                                pixmap.rowBytes(),
                                pixmap.ctable(),
                                nullptr, nullptr)
            ? SkImageEncoder::EncodeData(bm, SkImageEncoder::kJPEG_Type, 85)
            : nullptr;
    }
};
}  // namespace

size_t count_bytes(const SkBitmap& bm, bool useDCT) {
    SkDynamicMemoryWStream stream;
    SkAutoTUnref<SkDocument> doc;
    if (useDCT) {
        SkAutoTUnref<SkPixelSerializer> serializer(new JPEGSerializer);
        doc.reset(SkDocument::CreatePDF(
                          &stream, SK_ScalarDefaultRasterDPI, serializer));
    } else {
        doc.reset(SkDocument::CreatePDF(&stream));
    }
    SkCanvas* canvas = doc->beginPage(64, 64);
    canvas->drawBitmap(bm, 0, 0);
    doc->endPage();
    doc->close();
    return stream.bytesWritten();
}

DEF_TEST(document_dct_encoder, r) {
    REQUIRE_PDF_DOCUMENT(document_dct_encoder, r);
    SkBitmap bm;
    if (GetResourceAsBitmap("mandrill_64.png", &bm)) {
        // Lossy encoding works better on photographs.
        REPORTER_ASSERT(r, count_bytes(bm, true) < count_bytes(bm, false));
    }
}

DEF_TEST(document_skbug_4734, r) {
    REQUIRE_PDF_DOCUMENT(document_skbug_4734, r);
    SkDynamicMemoryWStream stream;
    SkAutoTUnref<SkDocument> doc(SkDocument::CreatePDF(&stream));
    SkCanvas* canvas = doc->beginPage(64, 64);
    canvas->scale(10000.0f, 10000.0f);
    canvas->translate(20.0f, 10.0f);
    canvas->rotate(30.0f);
    const char text[] = "HELLO";
    canvas->drawText(text, strlen(text), 0, 0, SkPaint());
}