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 | |
Mike Klein | c0bd9f9 | 2019-04-23 12:05:21 -0500 | [diff] [blame] | 8 | #include "src/pdf/SkPDFUtils.h" |
epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 9 | |
Mike Klein | c0bd9f9 | 2019-04-23 12:05:21 -0500 | [diff] [blame] | 10 | #include "include/core/SkData.h" |
| 11 | #include "include/core/SkStream.h" |
| 12 | #include "include/core/SkString.h" |
| 13 | #include "include/private/SkFixed.h" |
| 14 | #include "src/core/SkGeometry.h" |
Mike Reed | ba7e9a6 | 2019-08-16 13:30:34 -0400 | [diff] [blame] | 15 | #include "src/core/SkPathPriv.h" |
Mike Klein | c0bd9f9 | 2019-04-23 12:05:21 -0500 | [diff] [blame] | 16 | #include "src/image/SkImage_Base.h" |
| 17 | #include "src/pdf/SkPDFResourceDict.h" |
| 18 | #include "src/pdf/SkPDFTypes.h" |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 19 | |
halcanary | 8e9f5e3 | 2016-02-24 15:46:46 -0800 | [diff] [blame] | 20 | #include <cmath> |
| 21 | |
Hal Canary | b400d4d | 2018-09-26 16:33:52 -0400 | [diff] [blame] | 22 | const char* SkPDFUtils::BlendModeName(SkBlendMode mode) { |
| 23 | // PDF32000.book section 11.3.5 "Blend Mode" |
| 24 | switch (mode) { |
| 25 | case SkBlendMode::kSrcOver: return "Normal"; |
| 26 | case SkBlendMode::kXor: return "Normal"; // (unsupported mode) |
| 27 | case SkBlendMode::kPlus: return "Normal"; // (unsupported mode) |
| 28 | case SkBlendMode::kScreen: return "Screen"; |
| 29 | case SkBlendMode::kOverlay: return "Overlay"; |
| 30 | case SkBlendMode::kDarken: return "Darken"; |
| 31 | case SkBlendMode::kLighten: return "Lighten"; |
| 32 | case SkBlendMode::kColorDodge: return "ColorDodge"; |
| 33 | case SkBlendMode::kColorBurn: return "ColorBurn"; |
| 34 | case SkBlendMode::kHardLight: return "HardLight"; |
| 35 | case SkBlendMode::kSoftLight: return "SoftLight"; |
| 36 | case SkBlendMode::kDifference: return "Difference"; |
| 37 | case SkBlendMode::kExclusion: return "Exclusion"; |
| 38 | case SkBlendMode::kMultiply: return "Multiply"; |
| 39 | case SkBlendMode::kHue: return "Hue"; |
| 40 | case SkBlendMode::kSaturation: return "Saturation"; |
| 41 | case SkBlendMode::kColor: return "Color"; |
| 42 | case SkBlendMode::kLuminosity: return "Luminosity"; |
| 43 | // Other blendmodes are handled in SkPDFDevice::setUpContentEntry. |
| 44 | default: return nullptr; |
| 45 | } |
| 46 | } |
| 47 | |
Hal Canary | 7480158 | 2018-12-18 16:30:41 -0500 | [diff] [blame] | 48 | std::unique_ptr<SkPDFArray> SkPDFUtils::RectToArray(const SkRect& r) { |
Hal Canary | e650b85 | 2018-09-12 09:12:36 -0400 | [diff] [blame] | 49 | return SkPDFMakeArray(r.left(), r.top(), r.right(), r.bottom()); |
commit-bot@chromium.org | 93a2e21 | 2013-07-23 23:16:03 +0000 | [diff] [blame] | 50 | } |
| 51 | |
Hal Canary | 7480158 | 2018-12-18 16:30:41 -0500 | [diff] [blame] | 52 | std::unique_ptr<SkPDFArray> SkPDFUtils::MatrixToArray(const SkMatrix& matrix) { |
Hal Canary | e650b85 | 2018-09-12 09:12:36 -0400 | [diff] [blame] | 53 | SkScalar a[6]; |
| 54 | if (!matrix.asAffine(a)) { |
| 55 | SkMatrix::SetAffineIdentity(a); |
bungeman@google.com | 1ddd7c3 | 2011-07-13 19:41:55 +0000 | [diff] [blame] | 56 | } |
Hal Canary | e650b85 | 2018-09-12 09:12:36 -0400 | [diff] [blame] | 57 | 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] | 58 | } |
| 59 | |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 60 | void SkPDFUtils::MoveTo(SkScalar x, SkScalar y, SkWStream* content) { |
halcanary | bc4696b | 2015-05-06 10:56:04 -0700 | [diff] [blame] | 61 | SkPDFUtils::AppendScalar(x, content); |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 62 | content->writeText(" "); |
halcanary | bc4696b | 2015-05-06 10:56:04 -0700 | [diff] [blame] | 63 | SkPDFUtils::AppendScalar(y, content); |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 64 | content->writeText(" m\n"); |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 65 | } |
| 66 | |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 67 | void SkPDFUtils::AppendLine(SkScalar x, SkScalar y, SkWStream* content) { |
halcanary | bc4696b | 2015-05-06 10:56:04 -0700 | [diff] [blame] | 68 | SkPDFUtils::AppendScalar(x, content); |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 69 | content->writeText(" "); |
halcanary | bc4696b | 2015-05-06 10:56:04 -0700 | [diff] [blame] | 70 | SkPDFUtils::AppendScalar(y, content); |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 71 | content->writeText(" l\n"); |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 72 | } |
| 73 | |
Hal Canary | e650b85 | 2018-09-12 09:12:36 -0400 | [diff] [blame] | 74 | static void append_cubic(SkScalar ctl1X, SkScalar ctl1Y, |
| 75 | SkScalar ctl2X, SkScalar ctl2Y, |
| 76 | SkScalar dstX, SkScalar dstY, SkWStream* content) { |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 77 | SkString cmd("y\n"); |
halcanary | bc4696b | 2015-05-06 10:56:04 -0700 | [diff] [blame] | 78 | SkPDFUtils::AppendScalar(ctl1X, content); |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 79 | content->writeText(" "); |
halcanary | bc4696b | 2015-05-06 10:56:04 -0700 | [diff] [blame] | 80 | SkPDFUtils::AppendScalar(ctl1Y, content); |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 81 | content->writeText(" "); |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 82 | if (ctl2X != dstX || ctl2Y != dstY) { |
| 83 | cmd.set("c\n"); |
halcanary | bc4696b | 2015-05-06 10:56:04 -0700 | [diff] [blame] | 84 | SkPDFUtils::AppendScalar(ctl2X, content); |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 85 | content->writeText(" "); |
halcanary | bc4696b | 2015-05-06 10:56:04 -0700 | [diff] [blame] | 86 | SkPDFUtils::AppendScalar(ctl2Y, content); |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 87 | content->writeText(" "); |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 88 | } |
halcanary | bc4696b | 2015-05-06 10:56:04 -0700 | [diff] [blame] | 89 | SkPDFUtils::AppendScalar(dstX, content); |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 90 | content->writeText(" "); |
halcanary | bc4696b | 2015-05-06 10:56:04 -0700 | [diff] [blame] | 91 | SkPDFUtils::AppendScalar(dstY, content); |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 92 | content->writeText(" "); |
| 93 | content->writeText(cmd.c_str()); |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 94 | } |
| 95 | |
reed | 40c85e4 | 2015-01-05 10:01:25 -0800 | [diff] [blame] | 96 | static void append_quad(const SkPoint quad[], SkWStream* content) { |
| 97 | SkPoint cubic[4]; |
| 98 | SkConvertQuadToCubic(quad, cubic); |
Hal Canary | e650b85 | 2018-09-12 09:12:36 -0400 | [diff] [blame] | 99 | append_cubic(cubic[1].fX, cubic[1].fY, cubic[2].fX, cubic[2].fY, |
| 100 | cubic[3].fX, cubic[3].fY, content); |
reed | 40c85e4 | 2015-01-05 10:01:25 -0800 | [diff] [blame] | 101 | } |
| 102 | |
vandebo@chromium.org | 9fbdf87 | 2011-05-09 07:55:58 +0000 | [diff] [blame] | 103 | void SkPDFUtils::AppendRectangle(const SkRect& rect, SkWStream* content) { |
| 104 | // Skia has 0,0 at top left, pdf at bottom left. Do the right thing. |
Brian Osman | 116b33e | 2020-02-05 13:34:09 -0500 | [diff] [blame] | 105 | SkScalar bottom = std::min(rect.fBottom, rect.fTop); |
vandebo@chromium.org | 9fbdf87 | 2011-05-09 07:55:58 +0000 | [diff] [blame] | 106 | |
halcanary | bc4696b | 2015-05-06 10:56:04 -0700 | [diff] [blame] | 107 | SkPDFUtils::AppendScalar(rect.fLeft, content); |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 108 | content->writeText(" "); |
halcanary | bc4696b | 2015-05-06 10:56:04 -0700 | [diff] [blame] | 109 | SkPDFUtils::AppendScalar(bottom, content); |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 110 | content->writeText(" "); |
halcanary | bc4696b | 2015-05-06 10:56:04 -0700 | [diff] [blame] | 111 | SkPDFUtils::AppendScalar(rect.width(), content); |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 112 | content->writeText(" "); |
halcanary | bc4696b | 2015-05-06 10:56:04 -0700 | [diff] [blame] | 113 | SkPDFUtils::AppendScalar(rect.height(), content); |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 114 | content->writeText(" re\n"); |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 115 | } |
| 116 | |
vandebo@chromium.org | 683001c | 2012-05-09 17:17:51 +0000 | [diff] [blame] | 117 | void SkPDFUtils::EmitPath(const SkPath& path, SkPaint::Style paintStyle, |
Hal Canary | 385468f | 2017-02-13 11:03:23 -0500 | [diff] [blame] | 118 | bool doConsumeDegerates, SkWStream* content, |
| 119 | SkScalar tolerance) { |
Hal Canary | 4e83ff1 | 2018-03-09 12:16:42 -0500 | [diff] [blame] | 120 | if (path.isEmpty() && SkPaint::kFill_Style == paintStyle) { |
| 121 | SkPDFUtils::AppendRectangle({0, 0, 0, 0}, content); |
| 122 | return; |
| 123 | } |
vandebo@chromium.org | 683001c | 2012-05-09 17:17:51 +0000 | [diff] [blame] | 124 | // Filling a path with no area results in a drawing in PDF renderers but |
| 125 | // Chrome expects to be able to draw some such entities with no visible |
| 126 | // result, so we detect those cases and discard the drawing for them. |
| 127 | // Specifically: moveTo(X), lineTo(Y) and moveTo(X), lineTo(X), lineTo(Y). |
Hal Canary | 970225b | 2016-11-10 11:46:21 -0500 | [diff] [blame] | 128 | |
| 129 | SkRect rect; |
| 130 | bool isClosed; // Both closure and direction need to be checked. |
Mike Reed | 30bc527 | 2019-11-22 18:34:02 +0000 | [diff] [blame] | 131 | SkPathDirection direction; |
Hal Canary | 970225b | 2016-11-10 11:46:21 -0500 | [diff] [blame] | 132 | if (path.isRect(&rect, &isClosed, &direction) && |
Hal Canary | fc3afa9 | 2017-07-19 14:19:14 -0400 | [diff] [blame] | 133 | isClosed && |
Mike Reed | 30bc527 | 2019-11-22 18:34:02 +0000 | [diff] [blame] | 134 | (SkPathDirection::kCW == direction || |
Mike Reed | cf0e3c6 | 2019-12-03 16:26:15 -0500 | [diff] [blame] | 135 | SkPathFillType::kEvenOdd == path.getFillType())) |
Hal Canary | 970225b | 2016-11-10 11:46:21 -0500 | [diff] [blame] | 136 | { |
| 137 | SkPDFUtils::AppendRectangle(rect, content); |
| 138 | return; |
Hal Canary | 385468f | 2017-02-13 11:03:23 -0500 | [diff] [blame] | 139 | } |
Hal Canary | 970225b | 2016-11-10 11:46:21 -0500 | [diff] [blame] | 140 | |
vandebo@chromium.org | 683001c | 2012-05-09 17:17:51 +0000 | [diff] [blame] | 141 | enum SkipFillState { |
halcanary | 8b2bc25 | 2015-10-06 09:41:47 -0700 | [diff] [blame] | 142 | kEmpty_SkipFillState, |
| 143 | kSingleLine_SkipFillState, |
| 144 | kNonSingleLine_SkipFillState, |
vandebo@chromium.org | 683001c | 2012-05-09 17:17:51 +0000 | [diff] [blame] | 145 | }; |
| 146 | SkipFillState fillState = kEmpty_SkipFillState; |
halcanary | 8b2bc25 | 2015-10-06 09:41:47 -0700 | [diff] [blame] | 147 | //if (paintStyle != SkPaint::kFill_Style) { |
| 148 | // fillState = kNonSingleLine_SkipFillState; |
| 149 | //} |
sugoi@google.com | e2e8113 | 2013-03-05 18:35:55 +0000 | [diff] [blame] | 150 | SkPoint lastMovePt = SkPoint::Make(0,0); |
vandebo@chromium.org | 683001c | 2012-05-09 17:17:51 +0000 | [diff] [blame] | 151 | SkDynamicMemoryWStream currentSegment; |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 152 | SkPoint args[4]; |
| 153 | SkPath::Iter iter(path, false); |
Mike Reed | ba7e9a6 | 2019-08-16 13:30:34 -0400 | [diff] [blame] | 154 | for (SkPath::Verb verb = iter.next(args); |
halcanary | 8b2bc25 | 2015-10-06 09:41:47 -0700 | [diff] [blame] | 155 | verb != SkPath::kDone_Verb; |
Mike Reed | ba7e9a6 | 2019-08-16 13:30:34 -0400 | [diff] [blame] | 156 | verb = iter.next(args)) { |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 157 | // args gets all the points, even the implicit first point. |
| 158 | switch (verb) { |
| 159 | case SkPath::kMove_Verb: |
vandebo@chromium.org | 683001c | 2012-05-09 17:17:51 +0000 | [diff] [blame] | 160 | MoveTo(args[0].fX, args[0].fY, ¤tSegment); |
| 161 | lastMovePt = args[0]; |
| 162 | fillState = kEmpty_SkipFillState; |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 163 | break; |
| 164 | case SkPath::kLine_Verb: |
Mike Reed | ba7e9a6 | 2019-08-16 13:30:34 -0400 | [diff] [blame] | 165 | if (!doConsumeDegerates || !SkPathPriv::AllPointsEq(args, 2)) { |
| 166 | AppendLine(args[1].fX, args[1].fY, ¤tSegment); |
| 167 | if ((fillState == kEmpty_SkipFillState) && (args[0] != lastMovePt)) { |
| 168 | fillState = kSingleLine_SkipFillState; |
| 169 | break; |
| 170 | } |
| 171 | fillState = kNonSingleLine_SkipFillState; |
vandebo@chromium.org | 683001c | 2012-05-09 17:17:51 +0000 | [diff] [blame] | 172 | } |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 173 | break; |
reed | 40c85e4 | 2015-01-05 10:01:25 -0800 | [diff] [blame] | 174 | case SkPath::kQuad_Verb: |
Mike Reed | ba7e9a6 | 2019-08-16 13:30:34 -0400 | [diff] [blame] | 175 | if (!doConsumeDegerates || !SkPathPriv::AllPointsEq(args, 3)) { |
| 176 | append_quad(args, ¤tSegment); |
| 177 | fillState = kNonSingleLine_SkipFillState; |
reed | 40c85e4 | 2015-01-05 10:01:25 -0800 | [diff] [blame] | 178 | } |
Mike Reed | ba7e9a6 | 2019-08-16 13:30:34 -0400 | [diff] [blame] | 179 | break; |
| 180 | case SkPath::kConic_Verb: |
| 181 | if (!doConsumeDegerates || !SkPathPriv::AllPointsEq(args, 3)) { |
| 182 | SkAutoConicToQuads converter; |
| 183 | const SkPoint* quads = converter.computeQuads(args, iter.conicWeight(), tolerance); |
| 184 | for (int i = 0; i < converter.countQuads(); ++i) { |
| 185 | append_quad(&quads[i * 2], ¤tSegment); |
| 186 | } |
| 187 | fillState = kNonSingleLine_SkipFillState; |
| 188 | } |
| 189 | break; |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 190 | case SkPath::kCubic_Verb: |
Mike Reed | ba7e9a6 | 2019-08-16 13:30:34 -0400 | [diff] [blame] | 191 | if (!doConsumeDegerates || !SkPathPriv::AllPointsEq(args, 4)) { |
| 192 | append_cubic(args[1].fX, args[1].fY, args[2].fX, args[2].fY, |
| 193 | args[3].fX, args[3].fY, ¤tSegment); |
| 194 | fillState = kNonSingleLine_SkipFillState; |
| 195 | } |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 196 | break; |
| 197 | case SkPath::kClose_Verb: |
Hal Canary | 385468f | 2017-02-13 11:03:23 -0500 | [diff] [blame] | 198 | ClosePath(¤tSegment); |
halcanary | 8b2bc25 | 2015-10-06 09:41:47 -0700 | [diff] [blame] | 199 | currentSegment.writeToStream(content); |
vandebo@chromium.org | 683001c | 2012-05-09 17:17:51 +0000 | [diff] [blame] | 200 | currentSegment.reset(); |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 201 | break; |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 202 | default: |
| 203 | SkASSERT(false); |
| 204 | break; |
| 205 | } |
| 206 | } |
vandebo@chromium.org | 683001c | 2012-05-09 17:17:51 +0000 | [diff] [blame] | 207 | if (currentSegment.bytesWritten() > 0) { |
halcanary | 7af2150 | 2015-02-23 12:17:59 -0800 | [diff] [blame] | 208 | currentSegment.writeToStream(content); |
vandebo@chromium.org | 683001c | 2012-05-09 17:17:51 +0000 | [diff] [blame] | 209 | } |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 210 | } |
| 211 | |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 212 | void SkPDFUtils::ClosePath(SkWStream* content) { |
| 213 | content->writeText("h\n"); |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 214 | } |
| 215 | |
Mike Reed | 7d34dc7 | 2019-11-26 12:17:17 -0500 | [diff] [blame] | 216 | void SkPDFUtils::PaintPath(SkPaint::Style style, SkPathFillType fill, SkWStream* content) { |
ctguil@chromium.org | 769fa6a | 2011-08-20 00:36:18 +0000 | [diff] [blame] | 217 | if (style == SkPaint::kFill_Style) { |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 218 | content->writeText("f"); |
ctguil@chromium.org | 769fa6a | 2011-08-20 00:36:18 +0000 | [diff] [blame] | 219 | } else if (style == SkPaint::kStrokeAndFill_Style) { |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 220 | content->writeText("B"); |
ctguil@chromium.org | 769fa6a | 2011-08-20 00:36:18 +0000 | [diff] [blame] | 221 | } else if (style == SkPaint::kStroke_Style) { |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 222 | content->writeText("S"); |
ctguil@chromium.org | 769fa6a | 2011-08-20 00:36:18 +0000 | [diff] [blame] | 223 | } |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 224 | |
| 225 | if (style != SkPaint::kStroke_Style) { |
Mike Reed | 7d34dc7 | 2019-11-26 12:17:17 -0500 | [diff] [blame] | 226 | NOT_IMPLEMENTED(fill == SkPathFillType::kInverseEvenOdd, false); |
| 227 | NOT_IMPLEMENTED(fill == SkPathFillType::kInverseWinding, false); |
| 228 | if (fill == SkPathFillType::kEvenOdd) { |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 229 | content->writeText("*"); |
ctguil@chromium.org | 769fa6a | 2011-08-20 00:36:18 +0000 | [diff] [blame] | 230 | } |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 231 | } |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 232 | content->writeText("\n"); |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 233 | } |
| 234 | |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 235 | void SkPDFUtils::StrokePath(SkWStream* content) { |
Mike Reed | 7d34dc7 | 2019-11-26 12:17:17 -0500 | [diff] [blame] | 236 | SkPDFUtils::PaintPath(SkPaint::kStroke_Style, SkPathFillType::kWinding, content); |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 237 | } |
vandebo@chromium.org | 6112c21 | 2011-05-13 03:50:38 +0000 | [diff] [blame] | 238 | |
vandebo@chromium.org | 6112c21 | 2011-05-13 03:50:38 +0000 | [diff] [blame] | 239 | void SkPDFUtils::ApplyGraphicState(int objectIndex, SkWStream* content) { |
Hal Canary | e650b85 | 2018-09-12 09:12:36 -0400 | [diff] [blame] | 240 | SkPDFWriteResourceName(content, SkPDFResourceType::kExtGState, objectIndex); |
vandebo@chromium.org | 6112c21 | 2011-05-13 03:50:38 +0000 | [diff] [blame] | 241 | content->writeText(" gs\n"); |
| 242 | } |
commit-bot@chromium.org | 93a2e21 | 2013-07-23 23:16:03 +0000 | [diff] [blame] | 243 | |
commit-bot@chromium.org | 93a2e21 | 2013-07-23 23:16:03 +0000 | [diff] [blame] | 244 | void SkPDFUtils::ApplyPattern(int objectIndex, SkWStream* content) { |
| 245 | // Select Pattern color space (CS, cs) and set pattern object as current |
| 246 | // color (SCN, scn) |
Hal Canary | e650b85 | 2018-09-12 09:12:36 -0400 | [diff] [blame] | 247 | content->writeText("/Pattern CS/Pattern cs"); |
| 248 | SkPDFWriteResourceName(content, SkPDFResourceType::kPattern, objectIndex); |
| 249 | content->writeText(" SCN"); |
| 250 | SkPDFWriteResourceName(content, SkPDFResourceType::kPattern, objectIndex); |
commit-bot@chromium.org | 93a2e21 | 2013-07-23 23:16:03 +0000 | [diff] [blame] | 251 | content->writeText(" scn\n"); |
| 252 | } |
halcanary | bc4696b | 2015-05-06 10:56:04 -0700 | [diff] [blame] | 253 | |
Hal Canary | 04ac461 | 2018-10-10 13:09:43 -0400 | [diff] [blame] | 254 | // return "x/pow(10, places)", given 0<x<pow(10, places) |
| 255 | // result points to places+2 chars. |
| 256 | static size_t print_permil_as_decimal(int x, char* result, unsigned places) { |
halcanary | eb92cb3 | 2016-07-15 13:41:27 -0700 | [diff] [blame] | 257 | result[0] = '.'; |
Hal Canary | 04ac461 | 2018-10-10 13:09:43 -0400 | [diff] [blame] | 258 | for (int i = places; i > 0; --i) { |
halcanary | eb92cb3 | 2016-07-15 13:41:27 -0700 | [diff] [blame] | 259 | result[i] = '0' + x % 10; |
| 260 | x /= 10; |
| 261 | } |
| 262 | int j; |
Hal Canary | 04ac461 | 2018-10-10 13:09:43 -0400 | [diff] [blame] | 263 | for (j = places; j > 1; --j) { |
halcanary | eb92cb3 | 2016-07-15 13:41:27 -0700 | [diff] [blame] | 264 | if (result[j] != '0') { |
| 265 | break; |
| 266 | } |
| 267 | } |
| 268 | result[j + 1] = '\0'; |
| 269 | return j + 1; |
| 270 | } |
| 271 | |
Hal Canary | 94fd66c | 2017-07-05 11:25:42 -0400 | [diff] [blame] | 272 | |
Hal Canary | 04ac461 | 2018-10-10 13:09:43 -0400 | [diff] [blame] | 273 | static constexpr int int_pow(int base, unsigned exp, int acc = 1) { |
| 274 | return exp < 1 ? acc |
| 275 | : int_pow(base * base, |
| 276 | exp / 2, |
| 277 | (exp % 2) ? acc * base : acc); |
| 278 | } |
| 279 | |
| 280 | |
| 281 | size_t SkPDFUtils::ColorToDecimalF(float value, char result[kFloatColorDecimalCount + 2]) { |
| 282 | static constexpr int kFactor = int_pow(10, kFloatColorDecimalCount); |
| 283 | int x = sk_float_round2int(value * kFactor); |
| 284 | if (x >= kFactor || x <= 0) { // clamp to 0-1 |
| 285 | result[0] = x > 0 ? '1' : '0'; |
| 286 | result[1] = '\0'; |
| 287 | return 1; |
| 288 | } |
| 289 | return print_permil_as_decimal(x, result, kFloatColorDecimalCount); |
| 290 | } |
| 291 | |
| 292 | size_t SkPDFUtils::ColorToDecimal(uint8_t value, char result[5]) { |
| 293 | if (value == 255 || value == 0) { |
| 294 | result[0] = value ? '1' : '0'; |
| 295 | result[1] = '\0'; |
| 296 | return 1; |
| 297 | } |
| 298 | // int x = 0.5 + (1000.0 / 255.0) * value; |
| 299 | int x = SkFixedRoundToInt((SK_Fixed1 * 1000 / 255) * value); |
| 300 | return print_permil_as_decimal(x, result, 3); |
| 301 | } |
| 302 | |
Hal Canary | 94fd66c | 2017-07-05 11:25:42 -0400 | [diff] [blame] | 303 | bool SkPDFUtils::InverseTransformBBox(const SkMatrix& matrix, SkRect* bbox) { |
| 304 | SkMatrix inverse; |
| 305 | if (!matrix.invert(&inverse)) { |
| 306 | return false; |
| 307 | } |
| 308 | inverse.mapRect(bbox); |
| 309 | return true; |
| 310 | } |
| 311 | |
| 312 | void SkPDFUtils::PopulateTilingPatternDict(SkPDFDict* pattern, |
| 313 | SkRect& bbox, |
Hal Canary | 7480158 | 2018-12-18 16:30:41 -0500 | [diff] [blame] | 314 | std::unique_ptr<SkPDFDict> resources, |
Hal Canary | 94fd66c | 2017-07-05 11:25:42 -0400 | [diff] [blame] | 315 | const SkMatrix& matrix) { |
| 316 | const int kTiling_PatternType = 1; |
| 317 | const int kColoredTilingPattern_PaintType = 1; |
| 318 | const int kConstantSpacing_TilingType = 1; |
| 319 | |
| 320 | pattern->insertName("Type", "Pattern"); |
| 321 | pattern->insertInt("PatternType", kTiling_PatternType); |
| 322 | pattern->insertInt("PaintType", kColoredTilingPattern_PaintType); |
| 323 | pattern->insertInt("TilingType", kConstantSpacing_TilingType); |
| 324 | pattern->insertObject("BBox", SkPDFUtils::RectToArray(bbox)); |
| 325 | pattern->insertScalar("XStep", bbox.width()); |
| 326 | pattern->insertScalar("YStep", bbox.height()); |
| 327 | pattern->insertObject("Resources", std::move(resources)); |
| 328 | if (!matrix.isIdentity()) { |
| 329 | pattern->insertObject("Matrix", SkPDFUtils::MatrixToArray(matrix)); |
| 330 | } |
| 331 | } |
Hal Canary | 4f29c20 | 2017-07-18 10:28:31 -0400 | [diff] [blame] | 332 | |
| 333 | bool SkPDFUtils::ToBitmap(const SkImage* img, SkBitmap* dst) { |
| 334 | SkASSERT(img); |
| 335 | SkASSERT(dst); |
| 336 | SkBitmap bitmap; |
Adlai Holler | bcfc554 | 2020-08-27 12:44:07 -0400 | [diff] [blame] | 337 | // TODO: support GPU images |
| 338 | if(as_IB(img)->getROPixels(nullptr, &bitmap)) { |
Hal Canary | 4f29c20 | 2017-07-18 10:28:31 -0400 | [diff] [blame] | 339 | SkASSERT(bitmap.dimensions() == img->dimensions()); |
| 340 | SkASSERT(!bitmap.drawsNothing()); |
| 341 | *dst = std::move(bitmap); |
| 342 | return true; |
| 343 | } |
| 344 | return false; |
| 345 | } |
Hal Canary | fde1875 | 2018-12-19 13:49:23 -0500 | [diff] [blame] | 346 | |
| 347 | #ifdef SK_PDF_BASE85_BINARY |
Hal Canary | d104cc4 | 2018-12-20 16:15:17 -0500 | [diff] [blame] | 348 | void SkPDFUtils::Base85Encode(std::unique_ptr<SkStreamAsset> stream, SkDynamicMemoryWStream* dst) { |
Hal Canary | fde1875 | 2018-12-19 13:49:23 -0500 | [diff] [blame] | 349 | SkASSERT(dst); |
Hal Canary | d104cc4 | 2018-12-20 16:15:17 -0500 | [diff] [blame] | 350 | SkASSERT(stream); |
Hal Canary | fde1875 | 2018-12-19 13:49:23 -0500 | [diff] [blame] | 351 | dst->writeText("\n"); |
Hal Canary | d104cc4 | 2018-12-20 16:15:17 -0500 | [diff] [blame] | 352 | int column = 0; |
| 353 | while (true) { |
Hal Canary | fde1875 | 2018-12-19 13:49:23 -0500 | [diff] [blame] | 354 | uint8_t src[4] = {0, 0, 0, 0}; |
Hal Canary | d104cc4 | 2018-12-20 16:15:17 -0500 | [diff] [blame] | 355 | size_t count = stream->read(src, 4); |
| 356 | SkASSERT(count < 5); |
| 357 | if (0 == count) { |
| 358 | dst->writeText("~>\n"); |
| 359 | return; |
| 360 | } |
| 361 | uint32_t v = ((uint32_t)src[0] << 24) | ((uint32_t)src[1] << 16) | |
| 362 | ((uint32_t)src[2] << 8) | src[3]; |
| 363 | if (v == 0 && count == 4) { |
| 364 | dst->writeText("z"); |
| 365 | column += 1; |
| 366 | } else { |
| 367 | char buffer[5]; |
| 368 | for (int n = 4; n > 0; --n) { |
| 369 | buffer[n] = (v % 85) + '!'; |
| 370 | v /= 85; |
| 371 | } |
| 372 | buffer[0] = v + '!'; |
| 373 | dst->write(buffer, count + 1); |
| 374 | column += count + 1; |
| 375 | } |
| 376 | if (column > 74) { |
| 377 | dst->writeText("\n"); |
| 378 | column = 0; |
| 379 | } |
Hal Canary | fde1875 | 2018-12-19 13:49:23 -0500 | [diff] [blame] | 380 | } |
Hal Canary | fde1875 | 2018-12-19 13:49:23 -0500 | [diff] [blame] | 381 | } |
| 382 | #endif // SK_PDF_BASE85_BINARY |
Hal Canary | f5edf36 | 2019-04-10 11:00:01 -0400 | [diff] [blame] | 383 | |
| 384 | void SkPDFUtils::AppendTransform(const SkMatrix& matrix, SkWStream* content) { |
| 385 | SkScalar values[6]; |
| 386 | if (!matrix.asAffine(values)) { |
| 387 | SkMatrix::SetAffineIdentity(values); |
| 388 | } |
| 389 | for (SkScalar v : values) { |
| 390 | SkPDFUtils::AppendScalar(v, content); |
| 391 | content->writeText(" "); |
| 392 | } |
| 393 | content->writeText("cm\n"); |
| 394 | } |