ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 1 | /* |
epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 2 | * Copyright 2011 Google Inc. |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 3 | * |
epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 4 | * Use of this source code is governed by a BSD-style license that can be |
| 5 | * found in the LICENSE file. |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 6 | */ |
| 7 | |
Hal Canary | 4f29c20 | 2017-07-18 10:28:31 -0400 | [diff] [blame] | 8 | #include "SkPDFUtils.h" |
epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 9 | |
vandebo@chromium.org | 683001c | 2012-05-09 17:17:51 +0000 | [diff] [blame] | 10 | #include "SkData.h" |
halcanary | eb92cb3 | 2016-07-15 13:41:27 -0700 | [diff] [blame] | 11 | #include "SkFixed.h" |
reed@google.com | a44ea51 | 2011-07-27 18:24:25 +0000 | [diff] [blame] | 12 | #include "SkGeometry.h" |
Hal Canary | 4f29c20 | 2017-07-18 10:28:31 -0400 | [diff] [blame] | 13 | #include "SkImage_Base.h" |
commit-bot@chromium.org | 4740135 | 2013-07-23 21:49:29 +0000 | [diff] [blame] | 14 | #include "SkPDFResourceDict.h" |
Hal Canary | 4f29c20 | 2017-07-18 10:28:31 -0400 | [diff] [blame] | 15 | #include "SkPDFTypes.h" |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 16 | #include "SkStream.h" |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 17 | #include "SkString.h" |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 18 | |
halcanary | 8e9f5e3 | 2016-02-24 15:46:46 -0800 | [diff] [blame] | 19 | #include <cmath> |
| 20 | |
Hal Canary | b400d4d | 2018-09-26 16:33:52 -0400 | [diff] [blame] | 21 | const char* SkPDFUtils::BlendModeName(SkBlendMode mode) { |
| 22 | // PDF32000.book section 11.3.5 "Blend Mode" |
| 23 | switch (mode) { |
| 24 | case SkBlendMode::kSrcOver: return "Normal"; |
| 25 | case SkBlendMode::kXor: return "Normal"; // (unsupported mode) |
| 26 | case SkBlendMode::kPlus: return "Normal"; // (unsupported mode) |
| 27 | case SkBlendMode::kScreen: return "Screen"; |
| 28 | case SkBlendMode::kOverlay: return "Overlay"; |
| 29 | case SkBlendMode::kDarken: return "Darken"; |
| 30 | case SkBlendMode::kLighten: return "Lighten"; |
| 31 | case SkBlendMode::kColorDodge: return "ColorDodge"; |
| 32 | case SkBlendMode::kColorBurn: return "ColorBurn"; |
| 33 | case SkBlendMode::kHardLight: return "HardLight"; |
| 34 | case SkBlendMode::kSoftLight: return "SoftLight"; |
| 35 | case SkBlendMode::kDifference: return "Difference"; |
| 36 | case SkBlendMode::kExclusion: return "Exclusion"; |
| 37 | case SkBlendMode::kMultiply: return "Multiply"; |
| 38 | case SkBlendMode::kHue: return "Hue"; |
| 39 | case SkBlendMode::kSaturation: return "Saturation"; |
| 40 | case SkBlendMode::kColor: return "Color"; |
| 41 | case SkBlendMode::kLuminosity: return "Luminosity"; |
| 42 | // Other blendmodes are handled in SkPDFDevice::setUpContentEntry. |
| 43 | default: return nullptr; |
| 44 | } |
| 45 | } |
| 46 | |
Hal Canary | e650b85 | 2018-09-12 09:12:36 -0400 | [diff] [blame] | 47 | sk_sp<SkPDFArray> SkPDFUtils::RectToArray(const SkRect& r) { |
| 48 | return SkPDFMakeArray(r.left(), r.top(), r.right(), r.bottom()); |
commit-bot@chromium.org | 93a2e21 | 2013-07-23 23:16:03 +0000 | [diff] [blame] | 49 | } |
| 50 | |
halcanary | 8103a34 | 2016-03-08 15:10:16 -0800 | [diff] [blame] | 51 | sk_sp<SkPDFArray> SkPDFUtils::MatrixToArray(const SkMatrix& matrix) { |
Hal Canary | e650b85 | 2018-09-12 09:12:36 -0400 | [diff] [blame] | 52 | SkScalar a[6]; |
| 53 | if (!matrix.asAffine(a)) { |
| 54 | SkMatrix::SetAffineIdentity(a); |
bungeman@google.com | 1ddd7c3 | 2011-07-13 19:41:55 +0000 | [diff] [blame] | 55 | } |
Hal Canary | e650b85 | 2018-09-12 09:12:36 -0400 | [diff] [blame] | 56 | return SkPDFMakeArray(a[0], a[1], a[2], a[3], a[4], a[5]); |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 57 | } |
| 58 | |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 59 | void SkPDFUtils::MoveTo(SkScalar x, SkScalar y, SkWStream* content) { |
halcanary | bc4696b | 2015-05-06 10:56:04 -0700 | [diff] [blame] | 60 | SkPDFUtils::AppendScalar(x, content); |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 61 | content->writeText(" "); |
halcanary | bc4696b | 2015-05-06 10:56:04 -0700 | [diff] [blame] | 62 | SkPDFUtils::AppendScalar(y, content); |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 63 | content->writeText(" m\n"); |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 64 | } |
| 65 | |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 66 | void SkPDFUtils::AppendLine(SkScalar x, SkScalar y, SkWStream* content) { |
halcanary | bc4696b | 2015-05-06 10:56:04 -0700 | [diff] [blame] | 67 | SkPDFUtils::AppendScalar(x, content); |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 68 | content->writeText(" "); |
halcanary | bc4696b | 2015-05-06 10:56:04 -0700 | [diff] [blame] | 69 | SkPDFUtils::AppendScalar(y, content); |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 70 | content->writeText(" l\n"); |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 71 | } |
| 72 | |
Hal Canary | e650b85 | 2018-09-12 09:12:36 -0400 | [diff] [blame] | 73 | static void append_cubic(SkScalar ctl1X, SkScalar ctl1Y, |
| 74 | SkScalar ctl2X, SkScalar ctl2Y, |
| 75 | SkScalar dstX, SkScalar dstY, SkWStream* content) { |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 76 | SkString cmd("y\n"); |
halcanary | bc4696b | 2015-05-06 10:56:04 -0700 | [diff] [blame] | 77 | SkPDFUtils::AppendScalar(ctl1X, content); |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 78 | content->writeText(" "); |
halcanary | bc4696b | 2015-05-06 10:56:04 -0700 | [diff] [blame] | 79 | SkPDFUtils::AppendScalar(ctl1Y, content); |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 80 | content->writeText(" "); |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 81 | if (ctl2X != dstX || ctl2Y != dstY) { |
| 82 | cmd.set("c\n"); |
halcanary | bc4696b | 2015-05-06 10:56:04 -0700 | [diff] [blame] | 83 | SkPDFUtils::AppendScalar(ctl2X, content); |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 84 | content->writeText(" "); |
halcanary | bc4696b | 2015-05-06 10:56:04 -0700 | [diff] [blame] | 85 | SkPDFUtils::AppendScalar(ctl2Y, content); |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 86 | content->writeText(" "); |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 87 | } |
halcanary | bc4696b | 2015-05-06 10:56:04 -0700 | [diff] [blame] | 88 | SkPDFUtils::AppendScalar(dstX, content); |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 89 | content->writeText(" "); |
halcanary | bc4696b | 2015-05-06 10:56:04 -0700 | [diff] [blame] | 90 | SkPDFUtils::AppendScalar(dstY, content); |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 91 | content->writeText(" "); |
| 92 | content->writeText(cmd.c_str()); |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 93 | } |
| 94 | |
reed | 40c85e4 | 2015-01-05 10:01:25 -0800 | [diff] [blame] | 95 | static void append_quad(const SkPoint quad[], SkWStream* content) { |
| 96 | SkPoint cubic[4]; |
| 97 | SkConvertQuadToCubic(quad, cubic); |
Hal Canary | e650b85 | 2018-09-12 09:12:36 -0400 | [diff] [blame] | 98 | append_cubic(cubic[1].fX, cubic[1].fY, cubic[2].fX, cubic[2].fY, |
| 99 | cubic[3].fX, cubic[3].fY, content); |
reed | 40c85e4 | 2015-01-05 10:01:25 -0800 | [diff] [blame] | 100 | } |
| 101 | |
vandebo@chromium.org | 9fbdf87 | 2011-05-09 07:55:58 +0000 | [diff] [blame] | 102 | void SkPDFUtils::AppendRectangle(const SkRect& rect, SkWStream* content) { |
| 103 | // Skia has 0,0 at top left, pdf at bottom left. Do the right thing. |
| 104 | SkScalar bottom = SkMinScalar(rect.fBottom, rect.fTop); |
| 105 | |
halcanary | bc4696b | 2015-05-06 10:56:04 -0700 | [diff] [blame] | 106 | SkPDFUtils::AppendScalar(rect.fLeft, content); |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 107 | content->writeText(" "); |
halcanary | bc4696b | 2015-05-06 10:56:04 -0700 | [diff] [blame] | 108 | SkPDFUtils::AppendScalar(bottom, content); |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 109 | content->writeText(" "); |
halcanary | bc4696b | 2015-05-06 10:56:04 -0700 | [diff] [blame] | 110 | SkPDFUtils::AppendScalar(rect.width(), content); |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 111 | content->writeText(" "); |
halcanary | bc4696b | 2015-05-06 10:56:04 -0700 | [diff] [blame] | 112 | SkPDFUtils::AppendScalar(rect.height(), content); |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 113 | content->writeText(" re\n"); |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 114 | } |
| 115 | |
vandebo@chromium.org | 683001c | 2012-05-09 17:17:51 +0000 | [diff] [blame] | 116 | void SkPDFUtils::EmitPath(const SkPath& path, SkPaint::Style paintStyle, |
Hal Canary | 385468f | 2017-02-13 11:03:23 -0500 | [diff] [blame] | 117 | bool doConsumeDegerates, SkWStream* content, |
| 118 | SkScalar tolerance) { |
Hal Canary | 4e83ff1 | 2018-03-09 12:16:42 -0500 | [diff] [blame] | 119 | if (path.isEmpty() && SkPaint::kFill_Style == paintStyle) { |
| 120 | SkPDFUtils::AppendRectangle({0, 0, 0, 0}, content); |
| 121 | return; |
| 122 | } |
vandebo@chromium.org | 683001c | 2012-05-09 17:17:51 +0000 | [diff] [blame] | 123 | // Filling a path with no area results in a drawing in PDF renderers but |
| 124 | // Chrome expects to be able to draw some such entities with no visible |
| 125 | // result, so we detect those cases and discard the drawing for them. |
| 126 | // Specifically: moveTo(X), lineTo(Y) and moveTo(X), lineTo(X), lineTo(Y). |
Hal Canary | 970225b | 2016-11-10 11:46:21 -0500 | [diff] [blame] | 127 | |
| 128 | SkRect rect; |
| 129 | bool isClosed; // Both closure and direction need to be checked. |
| 130 | SkPath::Direction direction; |
| 131 | if (path.isRect(&rect, &isClosed, &direction) && |
Hal Canary | fc3afa9 | 2017-07-19 14:19:14 -0400 | [diff] [blame] | 132 | isClosed && |
| 133 | (SkPath::kCW_Direction == direction || |
| 134 | SkPath::kEvenOdd_FillType == path.getFillType())) |
Hal Canary | 970225b | 2016-11-10 11:46:21 -0500 | [diff] [blame] | 135 | { |
| 136 | SkPDFUtils::AppendRectangle(rect, content); |
| 137 | return; |
Hal Canary | 385468f | 2017-02-13 11:03:23 -0500 | [diff] [blame] | 138 | } |
Hal Canary | 970225b | 2016-11-10 11:46:21 -0500 | [diff] [blame] | 139 | |
vandebo@chromium.org | 683001c | 2012-05-09 17:17:51 +0000 | [diff] [blame] | 140 | enum SkipFillState { |
halcanary | 8b2bc25 | 2015-10-06 09:41:47 -0700 | [diff] [blame] | 141 | kEmpty_SkipFillState, |
| 142 | kSingleLine_SkipFillState, |
| 143 | kNonSingleLine_SkipFillState, |
vandebo@chromium.org | 683001c | 2012-05-09 17:17:51 +0000 | [diff] [blame] | 144 | }; |
| 145 | SkipFillState fillState = kEmpty_SkipFillState; |
halcanary | 8b2bc25 | 2015-10-06 09:41:47 -0700 | [diff] [blame] | 146 | //if (paintStyle != SkPaint::kFill_Style) { |
| 147 | // fillState = kNonSingleLine_SkipFillState; |
| 148 | //} |
sugoi@google.com | e2e8113 | 2013-03-05 18:35:55 +0000 | [diff] [blame] | 149 | SkPoint lastMovePt = SkPoint::Make(0,0); |
vandebo@chromium.org | 683001c | 2012-05-09 17:17:51 +0000 | [diff] [blame] | 150 | SkDynamicMemoryWStream currentSegment; |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 151 | SkPoint args[4]; |
| 152 | SkPath::Iter iter(path, false); |
halcanary | 8b2bc25 | 2015-10-06 09:41:47 -0700 | [diff] [blame] | 153 | for (SkPath::Verb verb = iter.next(args, doConsumeDegerates); |
| 154 | verb != SkPath::kDone_Verb; |
| 155 | verb = iter.next(args, doConsumeDegerates)) { |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 156 | // args gets all the points, even the implicit first point. |
| 157 | switch (verb) { |
| 158 | case SkPath::kMove_Verb: |
vandebo@chromium.org | 683001c | 2012-05-09 17:17:51 +0000 | [diff] [blame] | 159 | MoveTo(args[0].fX, args[0].fY, ¤tSegment); |
| 160 | lastMovePt = args[0]; |
| 161 | fillState = kEmpty_SkipFillState; |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 162 | break; |
| 163 | case SkPath::kLine_Verb: |
vandebo@chromium.org | 683001c | 2012-05-09 17:17:51 +0000 | [diff] [blame] | 164 | AppendLine(args[1].fX, args[1].fY, ¤tSegment); |
halcanary | 8b2bc25 | 2015-10-06 09:41:47 -0700 | [diff] [blame] | 165 | if ((fillState == kEmpty_SkipFillState) && (args[0] != lastMovePt)) { |
| 166 | fillState = kSingleLine_SkipFillState; |
| 167 | break; |
vandebo@chromium.org | 683001c | 2012-05-09 17:17:51 +0000 | [diff] [blame] | 168 | } |
halcanary | 8b2bc25 | 2015-10-06 09:41:47 -0700 | [diff] [blame] | 169 | fillState = kNonSingleLine_SkipFillState; |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 170 | break; |
reed | 40c85e4 | 2015-01-05 10:01:25 -0800 | [diff] [blame] | 171 | case SkPath::kQuad_Verb: |
| 172 | append_quad(args, ¤tSegment); |
vandebo@chromium.org | 683001c | 2012-05-09 17:17:51 +0000 | [diff] [blame] | 173 | fillState = kNonSingleLine_SkipFillState; |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 174 | break; |
reed | 40c85e4 | 2015-01-05 10:01:25 -0800 | [diff] [blame] | 175 | case SkPath::kConic_Verb: { |
reed | 40c85e4 | 2015-01-05 10:01:25 -0800 | [diff] [blame] | 176 | SkAutoConicToQuads converter; |
Hal Canary | 385468f | 2017-02-13 11:03:23 -0500 | [diff] [blame] | 177 | const SkPoint* quads = converter.computeQuads(args, iter.conicWeight(), tolerance); |
reed | 40c85e4 | 2015-01-05 10:01:25 -0800 | [diff] [blame] | 178 | for (int i = 0; i < converter.countQuads(); ++i) { |
| 179 | append_quad(&quads[i * 2], ¤tSegment); |
| 180 | } |
halcanary | 8b2bc25 | 2015-10-06 09:41:47 -0700 | [diff] [blame] | 181 | fillState = kNonSingleLine_SkipFillState; |
reed | 40c85e4 | 2015-01-05 10:01:25 -0800 | [diff] [blame] | 182 | } break; |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 183 | case SkPath::kCubic_Verb: |
Hal Canary | e650b85 | 2018-09-12 09:12:36 -0400 | [diff] [blame] | 184 | append_cubic(args[1].fX, args[1].fY, args[2].fX, args[2].fY, |
| 185 | args[3].fX, args[3].fY, ¤tSegment); |
vandebo@chromium.org | 683001c | 2012-05-09 17:17:51 +0000 | [diff] [blame] | 186 | fillState = kNonSingleLine_SkipFillState; |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 187 | break; |
| 188 | case SkPath::kClose_Verb: |
Hal Canary | 385468f | 2017-02-13 11:03:23 -0500 | [diff] [blame] | 189 | ClosePath(¤tSegment); |
halcanary | 8b2bc25 | 2015-10-06 09:41:47 -0700 | [diff] [blame] | 190 | currentSegment.writeToStream(content); |
vandebo@chromium.org | 683001c | 2012-05-09 17:17:51 +0000 | [diff] [blame] | 191 | currentSegment.reset(); |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 192 | break; |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 193 | default: |
| 194 | SkASSERT(false); |
| 195 | break; |
| 196 | } |
| 197 | } |
vandebo@chromium.org | 683001c | 2012-05-09 17:17:51 +0000 | [diff] [blame] | 198 | if (currentSegment.bytesWritten() > 0) { |
halcanary | 7af2150 | 2015-02-23 12:17:59 -0800 | [diff] [blame] | 199 | currentSegment.writeToStream(content); |
vandebo@chromium.org | 683001c | 2012-05-09 17:17:51 +0000 | [diff] [blame] | 200 | } |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 201 | } |
| 202 | |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 203 | void SkPDFUtils::ClosePath(SkWStream* content) { |
| 204 | content->writeText("h\n"); |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 205 | } |
| 206 | |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 207 | void SkPDFUtils::PaintPath(SkPaint::Style style, SkPath::FillType fill, |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 208 | SkWStream* content) { |
ctguil@chromium.org | 769fa6a | 2011-08-20 00:36:18 +0000 | [diff] [blame] | 209 | if (style == SkPaint::kFill_Style) { |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 210 | content->writeText("f"); |
ctguil@chromium.org | 769fa6a | 2011-08-20 00:36:18 +0000 | [diff] [blame] | 211 | } else if (style == SkPaint::kStrokeAndFill_Style) { |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 212 | content->writeText("B"); |
ctguil@chromium.org | 769fa6a | 2011-08-20 00:36:18 +0000 | [diff] [blame] | 213 | } else if (style == SkPaint::kStroke_Style) { |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 214 | content->writeText("S"); |
ctguil@chromium.org | 769fa6a | 2011-08-20 00:36:18 +0000 | [diff] [blame] | 215 | } |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 216 | |
| 217 | if (style != SkPaint::kStroke_Style) { |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 218 | NOT_IMPLEMENTED(fill == SkPath::kInverseEvenOdd_FillType, false); |
| 219 | NOT_IMPLEMENTED(fill == SkPath::kInverseWinding_FillType, false); |
ctguil@chromium.org | 769fa6a | 2011-08-20 00:36:18 +0000 | [diff] [blame] | 220 | if (fill == SkPath::kEvenOdd_FillType) { |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 221 | content->writeText("*"); |
ctguil@chromium.org | 769fa6a | 2011-08-20 00:36:18 +0000 | [diff] [blame] | 222 | } |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 223 | } |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 224 | content->writeText("\n"); |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 225 | } |
| 226 | |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 227 | void SkPDFUtils::StrokePath(SkWStream* content) { |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 228 | SkPDFUtils::PaintPath( |
| 229 | SkPaint::kStroke_Style, SkPath::kWinding_FillType, content); |
| 230 | } |
vandebo@chromium.org | 6112c21 | 2011-05-13 03:50:38 +0000 | [diff] [blame] | 231 | |
vandebo@chromium.org | 6112c21 | 2011-05-13 03:50:38 +0000 | [diff] [blame] | 232 | void SkPDFUtils::ApplyGraphicState(int objectIndex, SkWStream* content) { |
Hal Canary | e650b85 | 2018-09-12 09:12:36 -0400 | [diff] [blame] | 233 | SkPDFWriteResourceName(content, SkPDFResourceType::kExtGState, objectIndex); |
vandebo@chromium.org | 6112c21 | 2011-05-13 03:50:38 +0000 | [diff] [blame] | 234 | content->writeText(" gs\n"); |
| 235 | } |
commit-bot@chromium.org | 93a2e21 | 2013-07-23 23:16:03 +0000 | [diff] [blame] | 236 | |
commit-bot@chromium.org | 93a2e21 | 2013-07-23 23:16:03 +0000 | [diff] [blame] | 237 | void SkPDFUtils::ApplyPattern(int objectIndex, SkWStream* content) { |
| 238 | // Select Pattern color space (CS, cs) and set pattern object as current |
| 239 | // color (SCN, scn) |
Hal Canary | e650b85 | 2018-09-12 09:12:36 -0400 | [diff] [blame] | 240 | content->writeText("/Pattern CS/Pattern cs"); |
| 241 | SkPDFWriteResourceName(content, SkPDFResourceType::kPattern, objectIndex); |
| 242 | content->writeText(" SCN"); |
| 243 | SkPDFWriteResourceName(content, SkPDFResourceType::kPattern, objectIndex); |
commit-bot@chromium.org | 93a2e21 | 2013-07-23 23:16:03 +0000 | [diff] [blame] | 244 | content->writeText(" scn\n"); |
| 245 | } |
halcanary | bc4696b | 2015-05-06 10:56:04 -0700 | [diff] [blame] | 246 | |
Hal Canary | 04ac461 | 2018-10-10 13:09:43 -0400 | [diff] [blame] | 247 | // return "x/pow(10, places)", given 0<x<pow(10, places) |
| 248 | // result points to places+2 chars. |
| 249 | static size_t print_permil_as_decimal(int x, char* result, unsigned places) { |
halcanary | eb92cb3 | 2016-07-15 13:41:27 -0700 | [diff] [blame] | 250 | result[0] = '.'; |
Hal Canary | 04ac461 | 2018-10-10 13:09:43 -0400 | [diff] [blame] | 251 | for (int i = places; i > 0; --i) { |
halcanary | eb92cb3 | 2016-07-15 13:41:27 -0700 | [diff] [blame] | 252 | result[i] = '0' + x % 10; |
| 253 | x /= 10; |
| 254 | } |
| 255 | int j; |
Hal Canary | 04ac461 | 2018-10-10 13:09:43 -0400 | [diff] [blame] | 256 | for (j = places; j > 1; --j) { |
halcanary | eb92cb3 | 2016-07-15 13:41:27 -0700 | [diff] [blame] | 257 | if (result[j] != '0') { |
| 258 | break; |
| 259 | } |
| 260 | } |
| 261 | result[j + 1] = '\0'; |
| 262 | return j + 1; |
| 263 | } |
| 264 | |
Hal Canary | 94fd66c | 2017-07-05 11:25:42 -0400 | [diff] [blame] | 265 | |
Hal Canary | 04ac461 | 2018-10-10 13:09:43 -0400 | [diff] [blame] | 266 | static constexpr int int_pow(int base, unsigned exp, int acc = 1) { |
| 267 | return exp < 1 ? acc |
| 268 | : int_pow(base * base, |
| 269 | exp / 2, |
| 270 | (exp % 2) ? acc * base : acc); |
| 271 | } |
| 272 | |
| 273 | |
| 274 | size_t SkPDFUtils::ColorToDecimalF(float value, char result[kFloatColorDecimalCount + 2]) { |
| 275 | static constexpr int kFactor = int_pow(10, kFloatColorDecimalCount); |
| 276 | int x = sk_float_round2int(value * kFactor); |
| 277 | if (x >= kFactor || x <= 0) { // clamp to 0-1 |
| 278 | result[0] = x > 0 ? '1' : '0'; |
| 279 | result[1] = '\0'; |
| 280 | return 1; |
| 281 | } |
| 282 | return print_permil_as_decimal(x, result, kFloatColorDecimalCount); |
| 283 | } |
| 284 | |
| 285 | size_t SkPDFUtils::ColorToDecimal(uint8_t value, char result[5]) { |
| 286 | if (value == 255 || value == 0) { |
| 287 | result[0] = value ? '1' : '0'; |
| 288 | result[1] = '\0'; |
| 289 | return 1; |
| 290 | } |
| 291 | // int x = 0.5 + (1000.0 / 255.0) * value; |
| 292 | int x = SkFixedRoundToInt((SK_Fixed1 * 1000 / 255) * value); |
| 293 | return print_permil_as_decimal(x, result, 3); |
| 294 | } |
| 295 | |
Hal Canary | 94fd66c | 2017-07-05 11:25:42 -0400 | [diff] [blame] | 296 | bool SkPDFUtils::InverseTransformBBox(const SkMatrix& matrix, SkRect* bbox) { |
| 297 | SkMatrix inverse; |
| 298 | if (!matrix.invert(&inverse)) { |
| 299 | return false; |
| 300 | } |
| 301 | inverse.mapRect(bbox); |
| 302 | return true; |
| 303 | } |
| 304 | |
| 305 | void SkPDFUtils::PopulateTilingPatternDict(SkPDFDict* pattern, |
| 306 | SkRect& bbox, |
| 307 | sk_sp<SkPDFDict> resources, |
| 308 | const SkMatrix& matrix) { |
| 309 | const int kTiling_PatternType = 1; |
| 310 | const int kColoredTilingPattern_PaintType = 1; |
| 311 | const int kConstantSpacing_TilingType = 1; |
| 312 | |
| 313 | pattern->insertName("Type", "Pattern"); |
| 314 | pattern->insertInt("PatternType", kTiling_PatternType); |
| 315 | pattern->insertInt("PaintType", kColoredTilingPattern_PaintType); |
| 316 | pattern->insertInt("TilingType", kConstantSpacing_TilingType); |
| 317 | pattern->insertObject("BBox", SkPDFUtils::RectToArray(bbox)); |
| 318 | pattern->insertScalar("XStep", bbox.width()); |
| 319 | pattern->insertScalar("YStep", bbox.height()); |
| 320 | pattern->insertObject("Resources", std::move(resources)); |
| 321 | if (!matrix.isIdentity()) { |
| 322 | pattern->insertObject("Matrix", SkPDFUtils::MatrixToArray(matrix)); |
| 323 | } |
| 324 | } |
Hal Canary | 4f29c20 | 2017-07-18 10:28:31 -0400 | [diff] [blame] | 325 | |
| 326 | bool SkPDFUtils::ToBitmap(const SkImage* img, SkBitmap* dst) { |
| 327 | SkASSERT(img); |
| 328 | SkASSERT(dst); |
| 329 | SkBitmap bitmap; |
Brian Osman | e50cdf0 | 2018-10-19 13:02:14 -0400 | [diff] [blame] | 330 | if(as_IB(img)->getROPixels(&bitmap)) { |
Hal Canary | 4f29c20 | 2017-07-18 10:28:31 -0400 | [diff] [blame] | 331 | SkASSERT(bitmap.dimensions() == img->dimensions()); |
| 332 | SkASSERT(!bitmap.drawsNothing()); |
| 333 | *dst = std::move(bitmap); |
| 334 | return true; |
| 335 | } |
| 336 | return false; |
| 337 | } |
Hal Canary | fde1875 | 2018-12-19 13:49:23 -0500 | [diff] [blame^] | 338 | |
| 339 | #ifdef SK_PDF_BASE85_BINARY |
| 340 | static void base85_fourbytes(uint32_t v, char dst[5]) { |
| 341 | for (int n = 4; n > 0; --n) { |
| 342 | dst[n] = (v % 85) + '!'; |
| 343 | v /= 85; |
| 344 | } |
| 345 | dst[0] = v + '!'; |
| 346 | } |
| 347 | |
| 348 | static uint32_t big_end(const uint8_t s[4]) { |
| 349 | return ((uint32_t)s[0] << 24) | ((uint32_t)s[1] << 16) | ((uint32_t)s[2] << 8) | s[3]; |
| 350 | } |
| 351 | |
| 352 | void SkPDFUtils::Base85Encode(SkDynamicMemoryWStream* dst) { |
| 353 | SkASSERT(dst); |
| 354 | std::unique_ptr<SkStreamAsset> stream = dst->detachAsStream(); |
| 355 | SkASSERT(src); |
| 356 | size_t remaining = stream->getLength(); |
| 357 | dst->writeText("\n"); |
| 358 | int line = 0; |
| 359 | while (remaining > 3) { |
| 360 | uint8_t src[4]; |
| 361 | (void)stream->read(src, 4); |
| 362 | remaining -= 4; |
| 363 | uint32_t v = big_end(src); |
| 364 | if (v != 0) { |
| 365 | char buffer[5]; |
| 366 | base85_fourbytes(v, buffer); |
| 367 | dst->write(buffer, 5); |
| 368 | line += 5; |
| 369 | } else { |
| 370 | dst->writeText("z"); |
| 371 | line += 1; |
| 372 | } |
| 373 | if (line > 74) { |
| 374 | dst->writeText("\n"); |
| 375 | line = 0; |
| 376 | } |
| 377 | } |
| 378 | if (remaining > 0) { |
| 379 | SkASSERT(remaining < 4); |
| 380 | uint8_t src[4] = {0, 0, 0, 0}; |
| 381 | (void)stream->read(src, remaining); |
| 382 | char buffer[5]; |
| 383 | base85_fourbytes(big_end(src), buffer); |
| 384 | dst->write(buffer, remaining + 1); |
| 385 | } |
| 386 | dst->writeText("~>\n"); |
| 387 | } |
| 388 | #endif // SK_PDF_BASE85_BINARY |