epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 1 | |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 2 | /* |
epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 3 | * Copyright 2011 Google Inc. |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 4 | * |
epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 5 | * Use of this source code is governed by a BSD-style license that can be |
| 6 | * found in the LICENSE file. |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 7 | */ |
| 8 | |
epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 9 | |
reed@google.com | a44ea51 | 2011-07-27 18:24:25 +0000 | [diff] [blame] | 10 | #include "SkGeometry.h" |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 11 | #include "SkPaint.h" |
| 12 | #include "SkPath.h" |
| 13 | #include "SkPDFUtils.h" |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 14 | #include "SkStream.h" |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 15 | #include "SkString.h" |
| 16 | #include "SkPDFTypes.h" |
| 17 | |
| 18 | // static |
| 19 | SkPDFArray* SkPDFUtils::MatrixToArray(const SkMatrix& matrix) { |
| 20 | SkScalar values[6]; |
bungeman@google.com | 1ddd7c3 | 2011-07-13 19:41:55 +0000 | [diff] [blame] | 21 | if (!matrix.asAffine(values)) { |
| 22 | SkMatrix::SetAffineIdentity(values); |
| 23 | } |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 24 | |
| 25 | SkPDFArray* result = new SkPDFArray; |
| 26 | result->reserve(6); |
| 27 | for (size_t i = 0; i < SK_ARRAY_COUNT(values); i++) { |
reed@google.com | c789cf1 | 2011-07-20 12:14:33 +0000 | [diff] [blame] | 28 | result->appendScalar(values[i]); |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 29 | } |
| 30 | return result; |
| 31 | } |
| 32 | |
| 33 | // static |
vandebo@chromium.org | 75f97e4 | 2011-04-11 23:24:18 +0000 | [diff] [blame] | 34 | void SkPDFUtils::AppendTransform(const SkMatrix& matrix, SkWStream* content) { |
| 35 | SkScalar values[6]; |
bungeman@google.com | 1ddd7c3 | 2011-07-13 19:41:55 +0000 | [diff] [blame] | 36 | if (!matrix.asAffine(values)) { |
| 37 | SkMatrix::SetAffineIdentity(values); |
| 38 | } |
vandebo@chromium.org | 75f97e4 | 2011-04-11 23:24:18 +0000 | [diff] [blame] | 39 | for (size_t i = 0; i < SK_ARRAY_COUNT(values); i++) { |
| 40 | SkPDFScalar::Append(values[i], content); |
| 41 | content->writeText(" "); |
| 42 | } |
| 43 | content->writeText("cm\n"); |
| 44 | } |
| 45 | |
| 46 | // static |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 47 | void SkPDFUtils::MoveTo(SkScalar x, SkScalar y, SkWStream* content) { |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 48 | SkPDFScalar::Append(x, content); |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 49 | content->writeText(" "); |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 50 | SkPDFScalar::Append(y, content); |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 51 | content->writeText(" m\n"); |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 52 | } |
| 53 | |
| 54 | // static |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 55 | void SkPDFUtils::AppendLine(SkScalar x, SkScalar y, SkWStream* content) { |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 56 | SkPDFScalar::Append(x, content); |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 57 | content->writeText(" "); |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 58 | SkPDFScalar::Append(y, content); |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 59 | content->writeText(" l\n"); |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 60 | } |
| 61 | |
| 62 | // static |
| 63 | void SkPDFUtils::AppendCubic(SkScalar ctl1X, SkScalar ctl1Y, |
| 64 | SkScalar ctl2X, SkScalar ctl2Y, |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 65 | SkScalar dstX, SkScalar dstY, SkWStream* content) { |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 66 | SkString cmd("y\n"); |
| 67 | SkPDFScalar::Append(ctl1X, content); |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 68 | content->writeText(" "); |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 69 | SkPDFScalar::Append(ctl1Y, content); |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 70 | content->writeText(" "); |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 71 | if (ctl2X != dstX || ctl2Y != dstY) { |
| 72 | cmd.set("c\n"); |
| 73 | SkPDFScalar::Append(ctl2X, content); |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 74 | content->writeText(" "); |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 75 | SkPDFScalar::Append(ctl2Y, content); |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 76 | content->writeText(" "); |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 77 | } |
| 78 | SkPDFScalar::Append(dstX, content); |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 79 | content->writeText(" "); |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 80 | SkPDFScalar::Append(dstY, content); |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 81 | content->writeText(" "); |
| 82 | content->writeText(cmd.c_str()); |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 83 | } |
| 84 | |
| 85 | // static |
vandebo@chromium.org | 9fbdf87 | 2011-05-09 07:55:58 +0000 | [diff] [blame] | 86 | void SkPDFUtils::AppendRectangle(const SkRect& rect, SkWStream* content) { |
| 87 | // Skia has 0,0 at top left, pdf at bottom left. Do the right thing. |
| 88 | SkScalar bottom = SkMinScalar(rect.fBottom, rect.fTop); |
| 89 | |
| 90 | SkPDFScalar::Append(rect.fLeft, content); |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 91 | content->writeText(" "); |
vandebo@chromium.org | 9fbdf87 | 2011-05-09 07:55:58 +0000 | [diff] [blame] | 92 | SkPDFScalar::Append(bottom, content); |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 93 | content->writeText(" "); |
vandebo@chromium.org | 9fbdf87 | 2011-05-09 07:55:58 +0000 | [diff] [blame] | 94 | SkPDFScalar::Append(rect.width(), content); |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 95 | content->writeText(" "); |
vandebo@chromium.org | 9fbdf87 | 2011-05-09 07:55:58 +0000 | [diff] [blame] | 96 | SkPDFScalar::Append(rect.height(), content); |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 97 | content->writeText(" re\n"); |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 98 | } |
| 99 | |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 100 | // static |
| 101 | void SkPDFUtils::EmitPath(const SkPath& path, SkWStream* content) { |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 102 | SkPoint args[4]; |
| 103 | SkPath::Iter iter(path, false); |
| 104 | for (SkPath::Verb verb = iter.next(args); |
| 105 | verb != SkPath::kDone_Verb; |
| 106 | verb = iter.next(args)) { |
| 107 | // args gets all the points, even the implicit first point. |
| 108 | switch (verb) { |
| 109 | case SkPath::kMove_Verb: |
| 110 | MoveTo(args[0].fX, args[0].fY, content); |
| 111 | break; |
| 112 | case SkPath::kLine_Verb: |
| 113 | AppendLine(args[1].fX, args[1].fY, content); |
| 114 | break; |
| 115 | case SkPath::kQuad_Verb: { |
reed@google.com | a44ea51 | 2011-07-27 18:24:25 +0000 | [diff] [blame] | 116 | SkPoint cubic[4]; |
| 117 | SkConvertQuadToCubic(args, cubic); |
| 118 | AppendCubic(cubic[1].fX, cubic[1].fY, cubic[2].fX, cubic[2].fY, |
| 119 | cubic[3].fX, cubic[3].fY, content); |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 120 | break; |
| 121 | } |
| 122 | case SkPath::kCubic_Verb: |
| 123 | AppendCubic(args[1].fX, args[1].fY, args[2].fX, args[2].fY, |
| 124 | args[3].fX, args[3].fY, content); |
| 125 | break; |
| 126 | case SkPath::kClose_Verb: |
| 127 | ClosePath(content); |
| 128 | break; |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 129 | default: |
| 130 | SkASSERT(false); |
| 131 | break; |
| 132 | } |
| 133 | } |
| 134 | } |
| 135 | |
| 136 | // static |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 137 | void SkPDFUtils::ClosePath(SkWStream* content) { |
| 138 | content->writeText("h\n"); |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 139 | } |
| 140 | |
| 141 | // static |
| 142 | void SkPDFUtils::PaintPath(SkPaint::Style style, SkPath::FillType fill, |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 143 | SkWStream* content) { |
ctguil@chromium.org | 769fa6a | 2011-08-20 00:36:18 +0000 | [diff] [blame^] | 144 | if (style == SkPaint::kFill_Style) { |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 145 | content->writeText("f"); |
ctguil@chromium.org | 769fa6a | 2011-08-20 00:36:18 +0000 | [diff] [blame^] | 146 | } else if (style == SkPaint::kStrokeAndFill_Style) { |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 147 | content->writeText("B"); |
ctguil@chromium.org | 769fa6a | 2011-08-20 00:36:18 +0000 | [diff] [blame^] | 148 | } else if (style == SkPaint::kStroke_Style) { |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 149 | content->writeText("S"); |
ctguil@chromium.org | 769fa6a | 2011-08-20 00:36:18 +0000 | [diff] [blame^] | 150 | } |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 151 | |
| 152 | if (style != SkPaint::kStroke_Style) { |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 153 | NOT_IMPLEMENTED(fill == SkPath::kInverseEvenOdd_FillType, false); |
| 154 | NOT_IMPLEMENTED(fill == SkPath::kInverseWinding_FillType, false); |
ctguil@chromium.org | 769fa6a | 2011-08-20 00:36:18 +0000 | [diff] [blame^] | 155 | if (fill == SkPath::kEvenOdd_FillType) { |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 156 | content->writeText("*"); |
ctguil@chromium.org | 769fa6a | 2011-08-20 00:36:18 +0000 | [diff] [blame^] | 157 | } |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 158 | } |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 159 | content->writeText("\n"); |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 160 | } |
| 161 | |
| 162 | // static |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 163 | void SkPDFUtils::StrokePath(SkWStream* content) { |
ctguil@chromium.org | f966fd3 | 2011-03-04 21:47:04 +0000 | [diff] [blame] | 164 | SkPDFUtils::PaintPath( |
| 165 | SkPaint::kStroke_Style, SkPath::kWinding_FillType, content); |
| 166 | } |
vandebo@chromium.org | 6112c21 | 2011-05-13 03:50:38 +0000 | [diff] [blame] | 167 | |
| 168 | // static |
| 169 | void SkPDFUtils::DrawFormXObject(int objectIndex, SkWStream* content) { |
| 170 | content->writeText("/X"); |
| 171 | content->writeDecAsText(objectIndex); |
| 172 | content->writeText(" Do\n"); |
| 173 | } |
| 174 | |
| 175 | // static |
| 176 | void SkPDFUtils::ApplyGraphicState(int objectIndex, SkWStream* content) { |
| 177 | content->writeText("/G"); |
| 178 | content->writeDecAsText(objectIndex); |
| 179 | content->writeText(" gs\n"); |
| 180 | } |