Dominic Mazzoni | 2a016ba | 2020-02-24 08:45:39 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2020 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 | #include "tests/Test.h" |
| 8 | |
| 9 | #ifdef SK_SUPPORT_PDF |
| 10 | |
| 11 | #include "include/core/SkCanvas.h" |
| 12 | #include "include/core/SkFont.h" |
| 13 | #include "include/core/SkStream.h" |
| 14 | #include "include/docs/SkPDFDocument.h" |
| 15 | |
| 16 | using PDFTag = SkPDF::StructureElementNode; |
| 17 | |
| 18 | // Test building a tagged PDF where nodes are pruned. |
| 19 | // Add this to args.gn to output the PDF to a file: |
| 20 | // extra_cflags = [ "-DSK_PDF_TEST_TAGS_OUTPUT_PATH=\"/tmp/pruning.pdf\"" ] |
| 21 | DEF_TEST(SkPDF_tagged_pruning, r) { |
| 22 | REQUIRE_PDF_DOCUMENT(SkPDF_tagged, r); |
| 23 | #ifdef SK_PDF_TEST_TAGS_OUTPUT_PATH |
| 24 | SkFILEWStream outputStream(SK_PDF_TEST_TAGS_OUTPUT_PATH); |
| 25 | #else |
| 26 | SkDynamicMemoryWStream outputStream; |
| 27 | #endif |
| 28 | |
| 29 | SkSize pageSize = SkSize::Make(612, 792); // U.S. Letter |
| 30 | |
| 31 | SkPDF::Metadata metadata; |
| 32 | metadata.fTitle = "Example Tagged PDF"; |
| 33 | metadata.fCreator = "Skia"; |
| 34 | SkTime::DateTime now; |
| 35 | SkTime::GetDateTime(&now); |
| 36 | metadata.fCreation = now; |
| 37 | metadata.fModified = now; |
| 38 | |
| 39 | // The document tag. |
| 40 | auto root = std::make_unique<PDFTag>(); |
| 41 | root->fNodeId = 1; |
| 42 | root->fTypeString = "Document"; |
| 43 | root->fLang = "en-US"; |
| 44 | |
| 45 | // First paragraph. |
| 46 | auto p1 = std::make_unique<PDFTag>(); |
| 47 | p1->fNodeId = 2; |
| 48 | p1->fAdditionalNodeIds = {3, 4}; |
| 49 | p1->fTypeString = "P"; |
| 50 | root->fChildVector.push_back(std::move(p1)); |
| 51 | |
| 52 | // Second paragraph. |
| 53 | auto p2 = std::make_unique<PDFTag>(); |
| 54 | p2->fNodeId = 5; |
| 55 | p2->fAdditionalNodeIds = {6, 7}; |
| 56 | p2->fTypeString = "P"; |
| 57 | root->fChildVector.push_back(std::move(p2)); |
| 58 | |
| 59 | metadata.fStructureElementTreeRoot = root.get(); |
| 60 | sk_sp<SkDocument> document = SkPDF::MakeDocument( |
| 61 | &outputStream, metadata); |
| 62 | |
| 63 | SkPaint paint; |
| 64 | paint.setColor(SK_ColorBLACK); |
| 65 | |
| 66 | SkCanvas* canvas = |
| 67 | document->beginPage(pageSize.width(), |
| 68 | pageSize.height()); |
| 69 | SkFont font(nullptr, 20); |
| 70 | SkPDF::SetNodeId(canvas, 3); |
| 71 | canvas->drawString("First paragraph line 1", 72, 72, font, paint); |
| 72 | SkPDF::SetNodeId(canvas, 4); |
| 73 | canvas->drawString("First paragraph line 2", 72, 108, font, paint); |
| 74 | SkPDF::SetNodeId(canvas, 6); |
| 75 | canvas->drawString("Second paragraph line 1", 72, 180, font, paint); |
| 76 | SkPDF::SetNodeId(canvas, 7); |
| 77 | canvas->drawString("Second paragraph line 2", 72, 216, font, paint); |
| 78 | |
| 79 | document->endPage(); |
| 80 | document->close(); |
| 81 | outputStream.flush(); |
| 82 | } |
| 83 | |
Ben Wagner | 98e0ed7 | 2020-07-08 17:57:45 -0400 | [diff] [blame] | 84 | // Similar to SkPDF_tagged_pruning but never actually writes out anything annotated. |
| 85 | // Ensures that nothing goes wring when there are no annotations on an annotated PDF. |
| 86 | DEF_TEST(SkPDF_tagged_pruning_empty, r) { |
| 87 | REQUIRE_PDF_DOCUMENT(SkPDF_tagged, r); |
| 88 | #ifdef SK_PDF_TEST_TAGS_OUTPUT_PATH |
| 89 | SkFILEWStream outputStream(SK_PDF_TEST_TAGS_OUTPUT_PATH); |
| 90 | #else |
| 91 | SkDynamicMemoryWStream outputStream; |
| 92 | #endif |
| 93 | |
| 94 | SkSize pageSize = SkSize::Make(612, 792); // U.S. Letter |
| 95 | |
| 96 | SkPDF::Metadata metadata; |
| 97 | metadata.fTitle = "Example Tagged PDF"; |
| 98 | metadata.fCreator = "Skia"; |
| 99 | SkTime::DateTime now; |
| 100 | SkTime::GetDateTime(&now); |
| 101 | metadata.fCreation = now; |
| 102 | metadata.fModified = now; |
| 103 | |
| 104 | // The document tag. |
| 105 | auto root = std::make_unique<PDFTag>(); |
| 106 | root->fNodeId = 1; |
| 107 | root->fTypeString = "Document"; |
| 108 | root->fLang = "en-US"; |
| 109 | |
| 110 | // First paragraph. |
| 111 | auto p1 = std::make_unique<PDFTag>(); |
| 112 | p1->fNodeId = 2; |
| 113 | p1->fAdditionalNodeIds = {3, 4}; |
| 114 | p1->fTypeString = "P"; |
| 115 | root->fChildVector.push_back(std::move(p1)); |
| 116 | |
| 117 | // Second paragraph. |
| 118 | auto p2 = std::make_unique<PDFTag>(); |
| 119 | p2->fNodeId = 5; |
| 120 | p2->fAdditionalNodeIds = {6, 7}; |
| 121 | p2->fTypeString = "P"; |
| 122 | root->fChildVector.push_back(std::move(p2)); |
| 123 | |
| 124 | metadata.fStructureElementTreeRoot = root.get(); |
| 125 | sk_sp<SkDocument> document = SkPDF::MakeDocument( |
| 126 | &outputStream, metadata); |
| 127 | |
| 128 | SkPaint paint; |
| 129 | paint.setColor(SK_ColorBLACK); |
| 130 | |
| 131 | SkCanvas* canvas = |
| 132 | document->beginPage(pageSize.width(), |
| 133 | pageSize.height()); |
| 134 | |
| 135 | canvas->drawRect(SkRect::MakeXYWH(10, 10, 100, 100), paint); |
| 136 | |
| 137 | document->endPage(); |
| 138 | document->close(); |
| 139 | outputStream.flush(); |
| 140 | } |
| 141 | |
Dominic Mazzoni | 2a016ba | 2020-02-24 08:45:39 -0800 | [diff] [blame] | 142 | #endif |