vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 1 | /* |
vandebo@chromium.org | 2a22e10 | 2011-01-25 21:01:34 +0000 | [diff] [blame] | 2 | * Copyright (C) 2011 Google Inc. |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #include "SkPDFDevice.h" |
| 18 | |
| 19 | #include "SkColor.h" |
vandebo@chromium.org | 28be72b | 2010-11-11 21:37:00 +0000 | [diff] [blame] | 20 | #include "SkGlyphCache.h" |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 21 | #include "SkPaint.h" |
vandebo@chromium.org | a518086 | 2010-10-26 19:48:49 +0000 | [diff] [blame] | 22 | #include "SkPath.h" |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 23 | #include "SkPDFImage.h" |
| 24 | #include "SkPDFGraphicState.h" |
vandebo@chromium.org | 28be72b | 2010-11-11 21:37:00 +0000 | [diff] [blame] | 25 | #include "SkPDFFont.h" |
vandebo@chromium.org | eb6c759 | 2010-10-26 19:54:45 +0000 | [diff] [blame] | 26 | #include "SkPDFFormXObject.h" |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 27 | #include "SkPDFTypes.h" |
| 28 | #include "SkPDFStream.h" |
| 29 | #include "SkRect.h" |
| 30 | #include "SkString.h" |
vandebo@chromium.org | 28be72b | 2010-11-11 21:37:00 +0000 | [diff] [blame] | 31 | #include "SkTextFormatParams.h" |
| 32 | #include "SkTypeface.h" |
| 33 | #include "SkTypes.h" |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 34 | |
vandebo@chromium.org | a518086 | 2010-10-26 19:48:49 +0000 | [diff] [blame] | 35 | #define NOT_IMPLEMENTED(condition, assert) \ |
| 36 | do { \ |
| 37 | if (condition) { \ |
| 38 | fprintf(stderr, "NOT_IMPLEMENTED: " #condition "\n"); \ |
| 39 | SkASSERT(!assert); \ |
| 40 | } \ |
| 41 | } while(0) |
| 42 | |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 43 | // Utility functions |
| 44 | |
| 45 | namespace { |
| 46 | |
| 47 | SkString toPDFColor(SkColor color) { |
| 48 | SkASSERT(SkColorGetA(color) == 0xFF); // We handle alpha elsewhere. |
| 49 | SkScalar colorMax = SkIntToScalar(0xFF); |
| 50 | SkString result; |
vandebo@chromium.org | a518086 | 2010-10-26 19:48:49 +0000 | [diff] [blame] | 51 | result.appendScalar(SkScalarDiv(SkIntToScalar(SkColorGetR(color)), |
| 52 | colorMax)); |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 53 | result.append(" "); |
vandebo@chromium.org | a518086 | 2010-10-26 19:48:49 +0000 | [diff] [blame] | 54 | result.appendScalar(SkScalarDiv(SkIntToScalar(SkColorGetG(color)), |
| 55 | colorMax)); |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 56 | result.append(" "); |
vandebo@chromium.org | a518086 | 2010-10-26 19:48:49 +0000 | [diff] [blame] | 57 | result.appendScalar(SkScalarDiv(SkIntToScalar(SkColorGetB(color)), |
| 58 | colorMax)); |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 59 | result.append(" "); |
| 60 | return result; |
| 61 | } |
| 62 | |
vandebo@chromium.org | 28be72b | 2010-11-11 21:37:00 +0000 | [diff] [blame] | 63 | SkPaint calculateTextPaint(const SkPaint& paint) { |
| 64 | SkPaint result = paint; |
| 65 | if (result.isFakeBoldText()) { |
| 66 | SkScalar fakeBoldScale = SkScalarInterpFunc(result.getTextSize(), |
| 67 | kStdFakeBoldInterpKeys, |
| 68 | kStdFakeBoldInterpValues, |
| 69 | kStdFakeBoldInterpLength); |
| 70 | SkScalar width = SkScalarMul(result.getTextSize(), fakeBoldScale); |
| 71 | if (result.getStyle() == SkPaint::kFill_Style) |
| 72 | result.setStyle(SkPaint::kStrokeAndFill_Style); |
| 73 | else |
| 74 | width += result.getStrokeWidth(); |
| 75 | result.setStrokeWidth(width); |
| 76 | } |
| 77 | return result; |
| 78 | } |
| 79 | |
| 80 | // Stolen from measure_text in SkDraw.cpp and then tweaked. |
| 81 | void alignText(SkDrawCacheProc glyphCacheProc, const SkPaint& paint, |
| 82 | const uint16_t* glyphs, size_t len, SkScalar* x, SkScalar* y, |
| 83 | SkScalar* width) { |
| 84 | if (paint.getTextAlign() == SkPaint::kLeft_Align && width == NULL) |
| 85 | return; |
| 86 | |
| 87 | SkMatrix ident; |
| 88 | ident.reset(); |
| 89 | SkAutoGlyphCache autoCache(paint, &ident); |
| 90 | SkGlyphCache* cache = autoCache.getCache(); |
| 91 | |
| 92 | const char* start = (char*)glyphs; |
| 93 | const char* stop = (char*)(glyphs + len); |
| 94 | SkFixed xAdv = 0, yAdv = 0; |
| 95 | |
| 96 | // TODO(vandebo) This probably needs to take kerning into account. |
| 97 | while (start < stop) { |
| 98 | const SkGlyph& glyph = glyphCacheProc(cache, &start, 0, 0); |
| 99 | xAdv += glyph.fAdvanceX; |
| 100 | yAdv += glyph.fAdvanceY; |
| 101 | }; |
| 102 | if (width) |
| 103 | *width = SkFixedToScalar(xAdv); |
| 104 | if (paint.getTextAlign() == SkPaint::kLeft_Align) |
| 105 | return; |
| 106 | |
| 107 | SkScalar xAdj = SkFixedToScalar(xAdv); |
| 108 | SkScalar yAdj = SkFixedToScalar(yAdv); |
| 109 | if (paint.getTextAlign() == SkPaint::kCenter_Align) { |
| 110 | xAdj = SkScalarHalf(xAdj); |
| 111 | yAdj = SkScalarHalf(yAdj); |
| 112 | } |
| 113 | *x = *x - xAdj; |
| 114 | *y = *y - yAdj; |
| 115 | } |
| 116 | |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 117 | } // namespace |
| 118 | |
| 119 | //////////////////////////////////////////////////////////////////////////////// |
| 120 | |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 121 | SkDevice* SkPDFDeviceFactory::newDevice(SkCanvas*, SkBitmap::Config config, |
| 122 | int width, int height, bool isOpaque, |
| 123 | bool /*isForLayer*/) { |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 124 | return SkNEW_ARGS(SkPDFDevice, (width, height)); |
| 125 | } |
| 126 | |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 127 | static inline SkBitmap makeABitmap(int width, int height) { |
| 128 | SkBitmap bitmap; |
| 129 | bitmap.setConfig(SkBitmap::kNo_Config, width, height); |
| 130 | return bitmap; |
| 131 | } |
| 132 | |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 133 | SkPDFDevice::SkPDFDevice(int width, int height) |
reed@google.com | 0770044 | 2010-12-20 19:46:07 +0000 | [diff] [blame] | 134 | : SkDevice(NULL, makeABitmap(width, height), false), |
| 135 | fWidth(width), |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 136 | fHeight(height), |
reed@google.com | 0770044 | 2010-12-20 19:46:07 +0000 | [diff] [blame] | 137 | fGraphicStackIndex(0) { |
vandebo@chromium.org | 7e2ff7c | 2010-11-03 23:55:28 +0000 | [diff] [blame] | 138 | fGraphicStack[0].fColor = SK_ColorBLACK; |
vandebo@chromium.org | 28be72b | 2010-11-11 21:37:00 +0000 | [diff] [blame] | 139 | fGraphicStack[0].fTextSize = SK_ScalarNaN; // This has no default value. |
vandebo@chromium.org | 7e2ff7c | 2010-11-03 23:55:28 +0000 | [diff] [blame] | 140 | fGraphicStack[0].fTextScaleX = SK_Scalar1; |
vandebo@chromium.org | 28be72b | 2010-11-11 21:37:00 +0000 | [diff] [blame] | 141 | fGraphicStack[0].fTextFill = SkPaint::kFill_Style; |
vandebo@chromium.org | 2a22e10 | 2011-01-25 21:01:34 +0000 | [diff] [blame] | 142 | fGraphicStack[0].fFont = NULL; |
| 143 | fGraphicStack[0].fGraphicState = NULL; |
vandebo@chromium.org | 7e2ff7c | 2010-11-03 23:55:28 +0000 | [diff] [blame] | 144 | fGraphicStack[0].fClip.setRect(0,0, width, height); |
| 145 | fGraphicStack[0].fTransform.reset(); |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 146 | } |
| 147 | |
| 148 | SkPDFDevice::~SkPDFDevice() { |
| 149 | fGraphicStateResources.unrefAll(); |
| 150 | fXObjectResources.unrefAll(); |
vandebo@chromium.org | 28be72b | 2010-11-11 21:37:00 +0000 | [diff] [blame] | 151 | fFontResources.unrefAll(); |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 152 | } |
| 153 | |
| 154 | void SkPDFDevice::setMatrixClip(const SkMatrix& matrix, |
| 155 | const SkRegion& region) { |
vandebo@chromium.org | 7e2ff7c | 2010-11-03 23:55:28 +0000 | [diff] [blame] | 156 | // See the comment in the header file above GraphicStackEntry. |
| 157 | if (region != fGraphicStack[fGraphicStackIndex].fClip) { |
| 158 | while (fGraphicStackIndex > 0) |
| 159 | popGS(); |
| 160 | pushGS(); |
| 161 | |
| 162 | SkPath clipPath; |
vandebo@chromium.org | 2a22e10 | 2011-01-25 21:01:34 +0000 | [diff] [blame] | 163 | if (region.getBoundaryPath(&clipPath)) { |
| 164 | emitPath(clipPath); |
vandebo@chromium.org | 7e2ff7c | 2010-11-03 23:55:28 +0000 | [diff] [blame] | 165 | |
vandebo@chromium.org | 2a22e10 | 2011-01-25 21:01:34 +0000 | [diff] [blame] | 166 | SkPath::FillType clipFill = clipPath.getFillType(); |
| 167 | NOT_IMPLEMENTED(clipFill == SkPath::kInverseEvenOdd_FillType, |
| 168 | false); |
| 169 | NOT_IMPLEMENTED(clipFill == SkPath::kInverseWinding_FillType, |
| 170 | false); |
| 171 | if (clipFill == SkPath::kEvenOdd_FillType) |
| 172 | fContent.append("W* n "); |
| 173 | else |
| 174 | fContent.append("W n "); |
| 175 | } |
vandebo@chromium.org | 7e2ff7c | 2010-11-03 23:55:28 +0000 | [diff] [blame] | 176 | |
| 177 | fGraphicStack[fGraphicStackIndex].fClip = region; |
| 178 | } |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 179 | setTransform(matrix); |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 180 | } |
| 181 | |
| 182 | void SkPDFDevice::drawPaint(const SkDraw& d, const SkPaint& paint) { |
vandebo@chromium.org | 7e2ff7c | 2010-11-03 23:55:28 +0000 | [diff] [blame] | 183 | SkMatrix identityTransform; |
| 184 | identityTransform.reset(); |
| 185 | SkMatrix curTransform = setTransform(identityTransform); |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 186 | |
| 187 | SkPaint newPaint = paint; |
| 188 | newPaint.setStyle(SkPaint::kFill_Style); |
vandebo@chromium.org | 28be72b | 2010-11-11 21:37:00 +0000 | [diff] [blame] | 189 | updateGSFromPaint(newPaint, false); |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 190 | |
| 191 | SkRect all = SkRect::MakeWH(width() + 1, height() + 1); |
| 192 | drawRect(d, all, newPaint); |
vandebo@chromium.org | 7e2ff7c | 2010-11-03 23:55:28 +0000 | [diff] [blame] | 193 | setTransform(curTransform); |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 194 | } |
| 195 | |
| 196 | void SkPDFDevice::drawPoints(const SkDraw& d, SkCanvas::PointMode mode, |
| 197 | size_t count, const SkPoint* points, |
| 198 | const SkPaint& paint) { |
| 199 | if (count == 0) |
| 200 | return; |
| 201 | |
| 202 | switch (mode) { |
| 203 | case SkCanvas::kPolygon_PointMode: |
vandebo@chromium.org | 28be72b | 2010-11-11 21:37:00 +0000 | [diff] [blame] | 204 | updateGSFromPaint(paint, false); |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 205 | moveTo(points[0].fX, points[0].fY); |
| 206 | for (size_t i = 1; i < count; i++) |
| 207 | appendLine(points[i].fX, points[i].fY); |
| 208 | strokePath(); |
| 209 | break; |
| 210 | case SkCanvas::kLines_PointMode: |
vandebo@chromium.org | 28be72b | 2010-11-11 21:37:00 +0000 | [diff] [blame] | 211 | updateGSFromPaint(paint, false); |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 212 | for (size_t i = 0; i < count/2; i++) { |
| 213 | moveTo(points[i * 2].fX, points[i * 2].fY); |
| 214 | appendLine(points[i * 2 + 1].fX, points[i * 2 + 1].fY); |
| 215 | strokePath(); |
| 216 | } |
| 217 | break; |
| 218 | case SkCanvas::kPoints_PointMode: |
| 219 | if (paint.getStrokeCap() == SkPaint::kRound_Cap) { |
vandebo@chromium.org | 28be72b | 2010-11-11 21:37:00 +0000 | [diff] [blame] | 220 | updateGSFromPaint(paint, false); |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 221 | for (size_t i = 0; i < count; i++) { |
| 222 | moveTo(points[i].fX, points[i].fY); |
| 223 | strokePath(); |
| 224 | } |
| 225 | } else { |
| 226 | // PDF won't draw a single point with square/butt caps because |
| 227 | // the orientation is ambiguous. Draw a rectangle instead. |
| 228 | SkPaint newPaint = paint; |
| 229 | newPaint.setStyle(SkPaint::kFill_Style); |
| 230 | SkScalar strokeWidth = paint.getStrokeWidth(); |
| 231 | SkScalar halfStroke = strokeWidth * SK_ScalarHalf; |
| 232 | for (size_t i = 0; i < count; i++) { |
| 233 | SkRect r = SkRect::MakeXYWH(points[i].fX, points[i].fY, |
| 234 | 0, 0); |
| 235 | r.inset(-halfStroke, -halfStroke); |
| 236 | drawRect(d, r, newPaint); |
| 237 | } |
| 238 | } |
| 239 | break; |
| 240 | default: |
| 241 | SkASSERT(false); |
| 242 | } |
| 243 | } |
| 244 | |
| 245 | void SkPDFDevice::drawRect(const SkDraw& d, const SkRect& r, |
| 246 | const SkPaint& paint) { |
| 247 | if (paint.getPathEffect()) { |
vandebo@chromium.org | 7d71f7f | 2010-10-26 19:51:44 +0000 | [diff] [blame] | 248 | // Create a path for the rectangle and apply the path effect to it. |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 249 | SkPath path; |
| 250 | path.addRect(r); |
| 251 | paint.getFillPath(path, &path); |
| 252 | |
vandebo@chromium.org | 7e2ff7c | 2010-11-03 23:55:28 +0000 | [diff] [blame] | 253 | SkPaint noEffectPaint(paint); |
| 254 | SkSafeUnref(noEffectPaint.setPathEffect(NULL)); |
vandebo@chromium.org | 02cc5aa | 2011-01-25 22:06:29 +0000 | [diff] [blame^] | 255 | drawPath(d, path, noEffectPaint, NULL, true); |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 256 | return; |
| 257 | } |
vandebo@chromium.org | 28be72b | 2010-11-11 21:37:00 +0000 | [diff] [blame] | 258 | updateGSFromPaint(paint, false); |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 259 | |
| 260 | // Skia has 0,0 at top left, pdf at bottom left. Do the right thing. |
| 261 | SkScalar bottom = r.fBottom < r.fTop ? r.fBottom : r.fTop; |
| 262 | appendRectangle(r.fLeft, bottom, r.width(), r.height()); |
vandebo@chromium.org | a518086 | 2010-10-26 19:48:49 +0000 | [diff] [blame] | 263 | paintPath(paint.getStyle(), SkPath::kWinding_FillType); |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 264 | } |
| 265 | |
vandebo@chromium.org | 7d71f7f | 2010-10-26 19:51:44 +0000 | [diff] [blame] | 266 | void SkPDFDevice::drawPath(const SkDraw& d, const SkPath& path, |
vandebo@chromium.org | 02cc5aa | 2011-01-25 22:06:29 +0000 | [diff] [blame^] | 267 | const SkPaint& paint, const SkMatrix* prePathMatrix, |
| 268 | bool pathIsMutable) { |
| 269 | NOT_IMPLEMENTED("drawPath with prePathMatrix", (prePathMatrix != NULL)); |
| 270 | |
vandebo@chromium.org | 7d71f7f | 2010-10-26 19:51:44 +0000 | [diff] [blame] | 271 | if (paint.getPathEffect()) { |
| 272 | // Apply the path effect to path and draw it that way. |
vandebo@chromium.org | 7e2ff7c | 2010-11-03 23:55:28 +0000 | [diff] [blame] | 273 | SkPath noEffectPath; |
| 274 | paint.getFillPath(path, &noEffectPath); |
vandebo@chromium.org | 7d71f7f | 2010-10-26 19:51:44 +0000 | [diff] [blame] | 275 | |
vandebo@chromium.org | 7e2ff7c | 2010-11-03 23:55:28 +0000 | [diff] [blame] | 276 | SkPaint noEffectPaint(paint); |
| 277 | SkSafeUnref(noEffectPaint.setPathEffect(NULL)); |
vandebo@chromium.org | 02cc5aa | 2011-01-25 22:06:29 +0000 | [diff] [blame^] | 278 | drawPath(d, noEffectPath, noEffectPaint, NULL, true); |
vandebo@chromium.org | 7d71f7f | 2010-10-26 19:51:44 +0000 | [diff] [blame] | 279 | return; |
| 280 | } |
vandebo@chromium.org | 28be72b | 2010-11-11 21:37:00 +0000 | [diff] [blame] | 281 | updateGSFromPaint(paint, false); |
vandebo@chromium.org | 7d71f7f | 2010-10-26 19:51:44 +0000 | [diff] [blame] | 282 | |
vandebo@chromium.org | 7e2ff7c | 2010-11-03 23:55:28 +0000 | [diff] [blame] | 283 | emitPath(path); |
vandebo@chromium.org | 7d71f7f | 2010-10-26 19:51:44 +0000 | [diff] [blame] | 284 | paintPath(paint.getStyle(), path.getFillType()); |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 285 | } |
| 286 | |
| 287 | void SkPDFDevice::drawBitmap(const SkDraw&, const SkBitmap& bitmap, |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 288 | const SkIRect* srcRect, |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 289 | const SkMatrix& matrix, const SkPaint& paint) { |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 290 | // TODO: respect srcRect if present |
| 291 | |
vandebo@chromium.org | 7e2ff7c | 2010-11-03 23:55:28 +0000 | [diff] [blame] | 292 | SkMatrix transform = matrix; |
| 293 | transform.postConcat(fGraphicStack[fGraphicStackIndex].fTransform); |
| 294 | internalDrawBitmap(transform, bitmap, paint); |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 295 | } |
| 296 | |
| 297 | void SkPDFDevice::drawSprite(const SkDraw&, const SkBitmap& bitmap, |
| 298 | int x, int y, const SkPaint& paint) { |
vandebo@chromium.org | 7e2ff7c | 2010-11-03 23:55:28 +0000 | [diff] [blame] | 299 | SkMatrix matrix; |
| 300 | matrix.setTranslate(x, y); |
| 301 | internalDrawBitmap(matrix, bitmap, paint); |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 302 | } |
| 303 | |
vandebo@chromium.org | 28be72b | 2010-11-11 21:37:00 +0000 | [diff] [blame] | 304 | void SkPDFDevice::drawText(const SkDraw& d, const void* text, size_t len, |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 305 | SkScalar x, SkScalar y, const SkPaint& paint) { |
vandebo@chromium.org | 28be72b | 2010-11-11 21:37:00 +0000 | [diff] [blame] | 306 | SkPaint textPaint = calculateTextPaint(paint); |
| 307 | updateGSFromPaint(textPaint, true); |
vandebo@chromium.org | 28be72b | 2010-11-11 21:37:00 +0000 | [diff] [blame] | 308 | |
vandebo@chromium.org | 2a22e10 | 2011-01-25 21:01:34 +0000 | [diff] [blame] | 309 | // Make sure we have a glyph id encoding. |
| 310 | SkAutoFree glyphStorage; |
| 311 | uint16_t* glyphIDs; |
| 312 | size_t numGlyphs; |
| 313 | if (paint.getTextEncoding() != SkPaint::kGlyphID_TextEncoding) { |
| 314 | numGlyphs = paint.textToGlyphs(text, len, NULL); |
| 315 | glyphIDs = (uint16_t*)sk_malloc_flags(numGlyphs * 2, |
| 316 | SK_MALLOC_TEMP | SK_MALLOC_THROW); |
| 317 | glyphStorage.set(glyphIDs); |
| 318 | paint.textToGlyphs(text, len, glyphIDs); |
| 319 | textPaint.setTextEncoding(SkPaint::kGlyphID_TextEncoding); |
| 320 | } else { |
| 321 | SkASSERT((len & 1) == 0); |
| 322 | numGlyphs = len / 2; |
| 323 | glyphIDs = (uint16_t*)text; |
| 324 | } |
| 325 | SkAutoFree encodedStorage( |
| 326 | sk_malloc_flags(numGlyphs * 2, SK_MALLOC_TEMP | SK_MALLOC_THROW)); |
vandebo@chromium.org | 28be72b | 2010-11-11 21:37:00 +0000 | [diff] [blame] | 327 | |
| 328 | SkScalar width; |
| 329 | SkScalar* widthPtr = NULL; |
| 330 | if (textPaint.isUnderlineText() || textPaint.isStrikeThruText()) |
| 331 | widthPtr = &width; |
| 332 | |
| 333 | SkDrawCacheProc glyphCacheProc = textPaint.getDrawCacheProc(); |
vandebo@chromium.org | 2a22e10 | 2011-01-25 21:01:34 +0000 | [diff] [blame] | 334 | alignText(glyphCacheProc, textPaint, glyphIDs, numGlyphs, &x, &y, widthPtr); |
vandebo@chromium.org | 28be72b | 2010-11-11 21:37:00 +0000 | [diff] [blame] | 335 | fContent.append("BT\n"); |
| 336 | setTextTransform(x, y, textPaint.getTextSkewX()); |
vandebo@chromium.org | 2a22e10 | 2011-01-25 21:01:34 +0000 | [diff] [blame] | 337 | size_t consumedGlyphCount = 0; |
| 338 | while (numGlyphs > consumedGlyphCount) { |
| 339 | updateFont(textPaint, glyphIDs[consumedGlyphCount]); |
| 340 | SkPDFFont* font = fGraphicStack[fGraphicStackIndex].fFont; |
| 341 | size_t encodedLength = numGlyphs * 2; |
| 342 | consumedGlyphCount += font->glyphsToPDFFontEncoding( |
| 343 | glyphIDs + consumedGlyphCount, numGlyphs - consumedGlyphCount, |
| 344 | encodedStorage.get(), &encodedLength); |
| 345 | if (font->multiByteGlyphs()) |
| 346 | encodedLength /= 2; |
| 347 | fContent.append( |
| 348 | SkPDFString::formatString((const uint16_t*)encodedStorage.get(), |
| 349 | encodedLength, |
| 350 | font->multiByteGlyphs())); |
| 351 | fContent.append(" Tj\n"); |
| 352 | } |
| 353 | fContent.append("ET\n"); |
vandebo@chromium.org | 28be72b | 2010-11-11 21:37:00 +0000 | [diff] [blame] | 354 | |
| 355 | // Draw underline and/or strikethrough if the paint has them. |
| 356 | // drawPosText() and drawTextOnPath() don't draw underline or strikethrough |
| 357 | // because the raster versions don't. Use paint instead of textPaint |
| 358 | // because we may have changed strokeWidth to do fakeBold text. |
| 359 | if (paint.isUnderlineText() || paint.isStrikeThruText()) { |
| 360 | SkScalar textSize = paint.getTextSize(); |
| 361 | SkScalar height = SkScalarMul(textSize, kStdUnderline_Thickness); |
| 362 | |
| 363 | if (paint.isUnderlineText()) { |
| 364 | SkScalar top = SkScalarMulAdd(textSize, kStdUnderline_Offset, y); |
| 365 | SkRect r = SkRect::MakeXYWH(x, top - height, width, height); |
| 366 | drawRect(d, r, paint); |
| 367 | } |
| 368 | if (paint.isStrikeThruText()) { |
| 369 | SkScalar top = SkScalarMulAdd(textSize, kStdStrikeThru_Offset, y); |
| 370 | SkRect r = SkRect::MakeXYWH(x, top - height, width, height); |
| 371 | drawRect(d, r, paint); |
| 372 | } |
| 373 | } |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 374 | } |
| 375 | |
| 376 | void SkPDFDevice::drawPosText(const SkDraw&, const void* text, size_t len, |
| 377 | const SkScalar pos[], SkScalar constY, |
| 378 | int scalarsPerPos, const SkPaint& paint) { |
vandebo@chromium.org | 28be72b | 2010-11-11 21:37:00 +0000 | [diff] [blame] | 379 | SkASSERT(1 == scalarsPerPos || 2 == scalarsPerPos); |
| 380 | SkPaint textPaint = calculateTextPaint(paint); |
| 381 | updateGSFromPaint(textPaint, true); |
vandebo@chromium.org | 28be72b | 2010-11-11 21:37:00 +0000 | [diff] [blame] | 382 | |
vandebo@chromium.org | 2a22e10 | 2011-01-25 21:01:34 +0000 | [diff] [blame] | 383 | // Make sure we have a glyph id encoding. |
| 384 | SkAutoFree glyphStorage; |
| 385 | uint16_t* glyphIDs; |
| 386 | size_t numGlyphs; |
| 387 | if (paint.getTextEncoding() != SkPaint::kGlyphID_TextEncoding) { |
| 388 | numGlyphs = paint.textToGlyphs(text, len, NULL); |
| 389 | glyphIDs = (uint16_t*)sk_malloc_flags(numGlyphs * 2, |
| 390 | SK_MALLOC_TEMP | SK_MALLOC_THROW); |
| 391 | glyphStorage.set(glyphIDs); |
| 392 | paint.textToGlyphs(text, len, glyphIDs); |
| 393 | textPaint.setTextEncoding(SkPaint::kGlyphID_TextEncoding); |
| 394 | } else { |
| 395 | SkASSERT((len & 1) == 0); |
| 396 | numGlyphs = len / 2; |
| 397 | glyphIDs = (uint16_t*)text; |
| 398 | } |
vandebo@chromium.org | 28be72b | 2010-11-11 21:37:00 +0000 | [diff] [blame] | 399 | |
| 400 | SkDrawCacheProc glyphCacheProc = textPaint.getDrawCacheProc(); |
| 401 | fContent.append("BT\n"); |
vandebo@chromium.org | 2a22e10 | 2011-01-25 21:01:34 +0000 | [diff] [blame] | 402 | updateFont(textPaint, glyphIDs[0]); |
| 403 | for (size_t i = 0; i < numGlyphs; i++) { |
| 404 | SkPDFFont* font = fGraphicStack[fGraphicStackIndex].fFont; |
| 405 | uint16_t encodedValue; |
| 406 | size_t encodedLength = 2; |
| 407 | if (font->glyphsToPDFFontEncoding(glyphIDs + i, 1, &encodedValue, |
| 408 | &encodedLength) == 0) { |
| 409 | updateFont(textPaint, glyphIDs[i]); |
| 410 | i--; |
| 411 | continue; |
| 412 | } |
vandebo@chromium.org | 28be72b | 2010-11-11 21:37:00 +0000 | [diff] [blame] | 413 | SkScalar x = pos[i * scalarsPerPos]; |
| 414 | SkScalar y = scalarsPerPos == 1 ? constY : pos[i * scalarsPerPos + 1]; |
vandebo@chromium.org | 2a22e10 | 2011-01-25 21:01:34 +0000 | [diff] [blame] | 415 | alignText(glyphCacheProc, textPaint, glyphIDs + i, 1, &x, &y, NULL); |
vandebo@chromium.org | 28be72b | 2010-11-11 21:37:00 +0000 | [diff] [blame] | 416 | setTextTransform(x, y, textPaint.getTextSkewX()); |
vandebo@chromium.org | 2a22e10 | 2011-01-25 21:01:34 +0000 | [diff] [blame] | 417 | fContent.append(SkPDFString::formatString(&encodedValue, 1, |
vandebo@chromium.org | 28be72b | 2010-11-11 21:37:00 +0000 | [diff] [blame] | 418 | font->multiByteGlyphs())); |
| 419 | fContent.append(" Tj\n"); |
| 420 | } |
| 421 | fContent.append("ET\n"); |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 422 | } |
| 423 | |
| 424 | void SkPDFDevice::drawTextOnPath(const SkDraw&, const void* text, size_t len, |
| 425 | const SkPath& path, const SkMatrix* matrix, |
| 426 | const SkPaint& paint) { |
vandebo@chromium.org | a518086 | 2010-10-26 19:48:49 +0000 | [diff] [blame] | 427 | NOT_IMPLEMENTED("drawTextOnPath", true); |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 428 | } |
| 429 | |
| 430 | void SkPDFDevice::drawVertices(const SkDraw&, SkCanvas::VertexMode, |
| 431 | int vertexCount, const SkPoint verts[], |
| 432 | const SkPoint texs[], const SkColor colors[], |
| 433 | SkXfermode* xmode, const uint16_t indices[], |
| 434 | int indexCount, const SkPaint& paint) { |
vandebo@chromium.org | a518086 | 2010-10-26 19:48:49 +0000 | [diff] [blame] | 435 | NOT_IMPLEMENTED("drawVerticies", true); |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 436 | } |
| 437 | |
vandebo@chromium.org | eb6c759 | 2010-10-26 19:54:45 +0000 | [diff] [blame] | 438 | void SkPDFDevice::drawDevice(const SkDraw& d, SkDevice* device, int x, int y, |
| 439 | const SkPaint& paint) { |
| 440 | if ((device->getDeviceCapabilities() & kVector_Capability) == 0) { |
| 441 | // If we somehow get a raster device, do what our parent would do. |
| 442 | SkDevice::drawDevice(d, device, x, y, paint); |
| 443 | return; |
| 444 | } |
| 445 | |
| 446 | // Assume that a vector capable device means that it's a PDF Device. |
| 447 | // TODO(vandebo) handle the paint (alpha and compositing mode). |
| 448 | SkMatrix matrix; |
| 449 | matrix.setTranslate(x, y); |
| 450 | SkPDFDevice* pdfDevice = static_cast<SkPDFDevice*>(device); |
| 451 | |
| 452 | SkPDFFormXObject* xobject = new SkPDFFormXObject(pdfDevice, matrix); |
| 453 | fXObjectResources.push(xobject); // Transfer reference. |
| 454 | fContent.append("/X"); |
| 455 | fContent.appendS32(fXObjectResources.count() - 1); |
| 456 | fContent.append(" Do\n"); |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 457 | } |
| 458 | |
| 459 | const SkRefPtr<SkPDFDict>& SkPDFDevice::getResourceDict() { |
| 460 | if (fResourceDict.get() == NULL) { |
| 461 | fResourceDict = new SkPDFDict; |
| 462 | fResourceDict->unref(); // SkRefPtr and new both took a reference. |
| 463 | |
| 464 | if (fGraphicStateResources.count()) { |
| 465 | SkRefPtr<SkPDFDict> extGState = new SkPDFDict(); |
| 466 | extGState->unref(); // SkRefPtr and new both took a reference. |
| 467 | for (int i = 0; i < fGraphicStateResources.count(); i++) { |
| 468 | SkString nameString("G"); |
| 469 | nameString.appendS32(i); |
| 470 | SkRefPtr<SkPDFName> name = new SkPDFName(nameString); |
| 471 | name->unref(); // SkRefPtr and new both took a reference. |
| 472 | SkRefPtr<SkPDFObjRef> gsRef = |
| 473 | new SkPDFObjRef(fGraphicStateResources[i]); |
| 474 | gsRef->unref(); // SkRefPtr and new both took a reference. |
| 475 | extGState->insert(name.get(), gsRef.get()); |
| 476 | } |
| 477 | fResourceDict->insert("ExtGState", extGState.get()); |
| 478 | } |
| 479 | |
| 480 | if (fXObjectResources.count()) { |
| 481 | SkRefPtr<SkPDFDict> xObjects = new SkPDFDict(); |
| 482 | xObjects->unref(); // SkRefPtr and new both took a reference. |
| 483 | for (int i = 0; i < fXObjectResources.count(); i++) { |
| 484 | SkString nameString("X"); |
| 485 | nameString.appendS32(i); |
| 486 | SkRefPtr<SkPDFName> name = new SkPDFName(nameString); |
| 487 | name->unref(); // SkRefPtr and new both took a reference. |
| 488 | SkRefPtr<SkPDFObjRef> xObjRef = |
| 489 | new SkPDFObjRef(fXObjectResources[i]); |
| 490 | xObjRef->unref(); // SkRefPtr and new both took a reference. |
| 491 | xObjects->insert(name.get(), xObjRef.get()); |
| 492 | } |
| 493 | fResourceDict->insert("XObject", xObjects.get()); |
| 494 | } |
vandebo@chromium.org | 28be72b | 2010-11-11 21:37:00 +0000 | [diff] [blame] | 495 | |
| 496 | if (fFontResources.count()) { |
| 497 | SkRefPtr<SkPDFDict> fonts = new SkPDFDict(); |
| 498 | fonts->unref(); // SkRefPtr and new both took a reference. |
| 499 | for (int i = 0; i < fFontResources.count(); i++) { |
| 500 | SkString nameString("F"); |
| 501 | nameString.appendS32(i); |
| 502 | SkRefPtr<SkPDFName> name = new SkPDFName(nameString); |
| 503 | name->unref(); // SkRefPtr and new both took a reference. |
| 504 | SkRefPtr<SkPDFObjRef> fontRef = |
| 505 | new SkPDFObjRef(fFontResources[i]); |
| 506 | fontRef->unref(); // SkRefPtr and new both took a reference. |
| 507 | fonts->insert(name.get(), fontRef.get()); |
| 508 | } |
| 509 | fResourceDict->insert("Font", fonts.get()); |
| 510 | } |
| 511 | |
| 512 | // For compatibility, add all proc sets (only used for output to PS |
| 513 | // devices). |
| 514 | const char procs[][7] = {"PDF", "Text", "ImageB", "ImageC", "ImageI"}; |
| 515 | SkRefPtr<SkPDFArray> procSets = new SkPDFArray(); |
| 516 | procSets->unref(); // SkRefPtr and new both took a reference. |
| 517 | procSets->reserve(SK_ARRAY_COUNT(procs)); |
| 518 | for (size_t i = 0; i < SK_ARRAY_COUNT(procs); i++) { |
| 519 | SkRefPtr<SkPDFName> entry = new SkPDFName(procs[i]); |
| 520 | entry->unref(); // SkRefPtr and new both took a reference. |
| 521 | procSets->append(entry.get()); |
| 522 | } |
| 523 | fResourceDict->insert("ProcSet", procSets.get()); |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 524 | } |
| 525 | return fResourceDict; |
| 526 | } |
| 527 | |
vandebo@chromium.org | a518086 | 2010-10-26 19:48:49 +0000 | [diff] [blame] | 528 | void SkPDFDevice::getResources(SkTDArray<SkPDFObject*>* resourceList) const { |
| 529 | resourceList->setReserve(resourceList->count() + |
| 530 | fGraphicStateResources.count() + |
vandebo@chromium.org | 28be72b | 2010-11-11 21:37:00 +0000 | [diff] [blame] | 531 | fXObjectResources.count() + |
| 532 | fFontResources.count()); |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 533 | for (int i = 0; i < fGraphicStateResources.count(); i++) { |
vandebo@chromium.org | a518086 | 2010-10-26 19:48:49 +0000 | [diff] [blame] | 534 | resourceList->push(fGraphicStateResources[i]); |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 535 | fGraphicStateResources[i]->ref(); |
vandebo@chromium.org | a518086 | 2010-10-26 19:48:49 +0000 | [diff] [blame] | 536 | fGraphicStateResources[i]->getResources(resourceList); |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 537 | } |
| 538 | for (int i = 0; i < fXObjectResources.count(); i++) { |
vandebo@chromium.org | a518086 | 2010-10-26 19:48:49 +0000 | [diff] [blame] | 539 | resourceList->push(fXObjectResources[i]); |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 540 | fXObjectResources[i]->ref(); |
vandebo@chromium.org | a518086 | 2010-10-26 19:48:49 +0000 | [diff] [blame] | 541 | fXObjectResources[i]->getResources(resourceList); |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 542 | } |
vandebo@chromium.org | 28be72b | 2010-11-11 21:37:00 +0000 | [diff] [blame] | 543 | for (int i = 0; i < fFontResources.count(); i++) { |
| 544 | resourceList->push(fFontResources[i]); |
| 545 | fFontResources[i]->ref(); |
| 546 | fFontResources[i]->getResources(resourceList); |
| 547 | } |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 548 | } |
| 549 | |
vandebo@chromium.org | a518086 | 2010-10-26 19:48:49 +0000 | [diff] [blame] | 550 | SkRefPtr<SkPDFArray> SkPDFDevice::getMediaBox() const { |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 551 | SkRefPtr<SkPDFInt> zero = new SkPDFInt(0); |
| 552 | zero->unref(); // SkRefPtr and new both took a reference. |
| 553 | SkRefPtr<SkPDFInt> width = new SkPDFInt(fWidth); |
| 554 | width->unref(); // SkRefPtr and new both took a reference. |
| 555 | SkRefPtr<SkPDFInt> height = new SkPDFInt(fHeight); |
| 556 | height->unref(); // SkRefPtr and new both took a reference. |
| 557 | SkRefPtr<SkPDFArray> mediaBox = new SkPDFArray(); |
| 558 | mediaBox->unref(); // SkRefPtr and new both took a reference. |
| 559 | mediaBox->reserve(4); |
| 560 | mediaBox->append(zero.get()); |
| 561 | mediaBox->append(zero.get()); |
| 562 | mediaBox->append(width.get()); |
| 563 | mediaBox->append(height.get()); |
| 564 | return mediaBox; |
| 565 | } |
| 566 | |
vandebo@chromium.org | ddbbd80 | 2010-10-26 19:45:06 +0000 | [diff] [blame] | 567 | SkString SkPDFDevice::content(bool flipOrigin) const { |
| 568 | SkString result; |
| 569 | // Scale and translate to move the origin from the lower left to the |
| 570 | // upper left. |
| 571 | if (flipOrigin) |
| 572 | result.printf("1 0 0 -1 0 %d cm\n", fHeight); |
| 573 | result.append(fContent); |
vandebo@chromium.org | 7e2ff7c | 2010-11-03 23:55:28 +0000 | [diff] [blame] | 574 | for (int i = 0; i < fGraphicStackIndex; i++) |
| 575 | result.append("Q\n"); |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 576 | return result; |
| 577 | } |
| 578 | |
| 579 | // Private |
| 580 | |
| 581 | // TODO(vandebo) handle these cases. |
vandebo@chromium.org | a518086 | 2010-10-26 19:48:49 +0000 | [diff] [blame] | 582 | #define PAINTCHECK(x,y) NOT_IMPLEMENTED(newPaint.x() y, false) |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 583 | |
vandebo@chromium.org | 28be72b | 2010-11-11 21:37:00 +0000 | [diff] [blame] | 584 | void SkPDFDevice::updateGSFromPaint(const SkPaint& newPaint, bool forText) { |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 585 | PAINTCHECK(getXfermode, != NULL); |
| 586 | PAINTCHECK(getPathEffect, != NULL); |
| 587 | PAINTCHECK(getMaskFilter, != NULL); |
| 588 | PAINTCHECK(getShader, != NULL); |
| 589 | PAINTCHECK(getColorFilter, != NULL); |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 590 | |
| 591 | SkRefPtr<SkPDFGraphicState> newGraphicState = |
| 592 | SkPDFGraphicState::getGraphicStateForPaint(newPaint); |
| 593 | newGraphicState->unref(); // getGraphicState and SkRefPtr both took a ref. |
| 594 | // newGraphicState has been canonicalized so we can directly compare |
| 595 | // pointers. |
vandebo@chromium.org | 2a22e10 | 2011-01-25 21:01:34 +0000 | [diff] [blame] | 596 | if (fGraphicStack[fGraphicStackIndex].fGraphicState != |
vandebo@chromium.org | 7e2ff7c | 2010-11-03 23:55:28 +0000 | [diff] [blame] | 597 | newGraphicState.get()) { |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 598 | int resourceIndex = fGraphicStateResources.find(newGraphicState.get()); |
| 599 | if (resourceIndex < 0) { |
| 600 | resourceIndex = fGraphicStateResources.count(); |
| 601 | fGraphicStateResources.push(newGraphicState.get()); |
| 602 | newGraphicState->ref(); |
| 603 | } |
| 604 | fContent.append("/G"); |
| 605 | fContent.appendS32(resourceIndex); |
| 606 | fContent.append(" gs\n"); |
vandebo@chromium.org | 2a22e10 | 2011-01-25 21:01:34 +0000 | [diff] [blame] | 607 | fGraphicStack[fGraphicStackIndex].fGraphicState = newGraphicState.get(); |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 608 | } |
| 609 | |
| 610 | SkColor newColor = newPaint.getColor(); |
| 611 | newColor = SkColorSetA(newColor, 0xFF); |
vandebo@chromium.org | 7e2ff7c | 2010-11-03 23:55:28 +0000 | [diff] [blame] | 612 | if (fGraphicStack[fGraphicStackIndex].fColor != newColor) { |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 613 | SkString colorString = toPDFColor(newColor); |
| 614 | fContent.append(colorString); |
| 615 | fContent.append("RG "); |
| 616 | fContent.append(colorString); |
| 617 | fContent.append("rg\n"); |
vandebo@chromium.org | 7e2ff7c | 2010-11-03 23:55:28 +0000 | [diff] [blame] | 618 | fGraphicStack[fGraphicStackIndex].fColor = newColor; |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 619 | } |
| 620 | |
vandebo@chromium.org | 28be72b | 2010-11-11 21:37:00 +0000 | [diff] [blame] | 621 | if (forText) { |
vandebo@chromium.org | 28be72b | 2010-11-11 21:37:00 +0000 | [diff] [blame] | 622 | if (fGraphicStack[fGraphicStackIndex].fTextScaleX != |
| 623 | newPaint.getTextScaleX()) { |
| 624 | SkScalar scale = newPaint.getTextScaleX(); |
| 625 | SkScalar pdfScale = SkScalarMul(scale, SkIntToScalar(100)); |
| 626 | fContent.appendScalar(pdfScale); |
| 627 | fContent.append(" Tz\n"); |
| 628 | fGraphicStack[fGraphicStackIndex].fTextScaleX = scale; |
| 629 | } |
| 630 | |
| 631 | if (fGraphicStack[fGraphicStackIndex].fTextFill != |
| 632 | newPaint.getStyle()) { |
| 633 | SK_COMPILE_ASSERT(SkPaint::kFill_Style == 0, enum_must_match_value); |
| 634 | SK_COMPILE_ASSERT(SkPaint::kStroke_Style == 1, |
| 635 | enum_must_match_value); |
| 636 | SK_COMPILE_ASSERT(SkPaint::kStrokeAndFill_Style == 2, |
| 637 | enum_must_match_value); |
| 638 | fContent.appendS32(newPaint.getStyle()); |
| 639 | fContent.append(" Tr\n"); |
| 640 | fGraphicStack[fGraphicStackIndex].fTextFill = newPaint.getStyle(); |
| 641 | } |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 642 | } |
| 643 | } |
| 644 | |
vandebo@chromium.org | 2a22e10 | 2011-01-25 21:01:34 +0000 | [diff] [blame] | 645 | void SkPDFDevice::updateFont(const SkPaint& paint, uint16_t glyphID) { |
| 646 | uint32_t fontID = SkTypeface::UniqueID(paint.getTypeface()); |
| 647 | if (fGraphicStack[fGraphicStackIndex].fTextSize != paint.getTextSize() || |
| 648 | fGraphicStack[fGraphicStackIndex].fFont == NULL || |
| 649 | fGraphicStack[fGraphicStackIndex].fFont->fontID() != fontID || |
| 650 | !fGraphicStack[fGraphicStackIndex].fFont->hasGlyph(glyphID)) { |
| 651 | int fontIndex = getFontResourceIndex(fontID, glyphID); |
| 652 | fContent.append("/F"); |
| 653 | fContent.appendS32(fontIndex); |
| 654 | fContent.append(" "); |
| 655 | fContent.appendScalar(paint.getTextSize()); |
| 656 | fContent.append(" Tf\n"); |
| 657 | fGraphicStack[fGraphicStackIndex].fTextSize = paint.getTextSize(); |
| 658 | fGraphicStack[fGraphicStackIndex].fFont = fFontResources[fontIndex]; |
| 659 | } |
| 660 | } |
| 661 | |
| 662 | |
| 663 | int SkPDFDevice::getFontResourceIndex(uint32_t fontID, uint16_t glyphID) { |
| 664 | SkRefPtr<SkPDFFont> newFont = SkPDFFont::getFontResource(fontID, glyphID); |
| 665 | newFont->unref(); // getFontResource and SkRefPtr both took a ref. |
vandebo@chromium.org | 28be72b | 2010-11-11 21:37:00 +0000 | [diff] [blame] | 666 | int resourceIndex = fFontResources.find(newFont.get()); |
| 667 | if (resourceIndex < 0) { |
| 668 | resourceIndex = fFontResources.count(); |
| 669 | fFontResources.push(newFont.get()); |
| 670 | newFont->ref(); |
| 671 | } |
| 672 | return resourceIndex; |
| 673 | } |
| 674 | |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 675 | void SkPDFDevice::moveTo(SkScalar x, SkScalar y) { |
| 676 | fContent.appendScalar(x); |
| 677 | fContent.append(" "); |
| 678 | fContent.appendScalar(y); |
| 679 | fContent.append(" m\n"); |
| 680 | } |
| 681 | |
| 682 | void SkPDFDevice::appendLine(SkScalar x, SkScalar y) { |
| 683 | fContent.appendScalar(x); |
| 684 | fContent.append(" "); |
| 685 | fContent.appendScalar(y); |
| 686 | fContent.append(" l\n"); |
| 687 | } |
| 688 | |
| 689 | void SkPDFDevice::appendCubic(SkScalar ctl1X, SkScalar ctl1Y, |
| 690 | SkScalar ctl2X, SkScalar ctl2Y, |
| 691 | SkScalar dstX, SkScalar dstY) { |
| 692 | SkString cmd("y\n"); |
| 693 | fContent.appendScalar(ctl1X); |
| 694 | fContent.append(" "); |
| 695 | fContent.appendScalar(ctl1Y); |
| 696 | fContent.append(" "); |
| 697 | if (ctl2X != dstX || ctl2Y != dstY) { |
| 698 | cmd.set("c\n"); |
| 699 | fContent.appendScalar(ctl2X); |
| 700 | fContent.append(" "); |
| 701 | fContent.appendScalar(ctl2Y); |
| 702 | fContent.append(" "); |
| 703 | } |
| 704 | fContent.appendScalar(dstX); |
| 705 | fContent.append(" "); |
| 706 | fContent.appendScalar(dstY); |
| 707 | fContent.append(cmd); |
| 708 | } |
| 709 | |
| 710 | void SkPDFDevice::appendRectangle(SkScalar x, SkScalar y, |
| 711 | SkScalar w, SkScalar h) { |
| 712 | fContent.appendScalar(x); |
| 713 | fContent.append(" "); |
| 714 | fContent.appendScalar(y); |
| 715 | fContent.append(" "); |
| 716 | fContent.appendScalar(w); |
| 717 | fContent.append(" "); |
| 718 | fContent.appendScalar(h); |
| 719 | fContent.append(" re\n"); |
| 720 | } |
| 721 | |
vandebo@chromium.org | 7e2ff7c | 2010-11-03 23:55:28 +0000 | [diff] [blame] | 722 | void SkPDFDevice::emitPath(const SkPath& path) { |
| 723 | SkPoint args[4]; |
| 724 | SkPath::Iter iter(path, false); |
| 725 | for (SkPath::Verb verb = iter.next(args); |
| 726 | verb != SkPath::kDone_Verb; |
| 727 | verb = iter.next(args)) { |
| 728 | // args gets all the points, even the implicit first point. |
| 729 | switch (verb) { |
| 730 | case SkPath::kMove_Verb: |
| 731 | moveTo(args[0].fX, args[0].fY); |
| 732 | break; |
| 733 | case SkPath::kLine_Verb: |
| 734 | appendLine(args[1].fX, args[1].fY); |
| 735 | break; |
| 736 | case SkPath::kQuad_Verb: { |
| 737 | // Convert quad to cubic (degree elevation). http://goo.gl/vS4i |
| 738 | const SkScalar three = SkIntToScalar(3); |
| 739 | args[1].scale(SkIntToScalar(2)); |
| 740 | SkScalar ctl1X = SkScalarDiv(args[0].fX + args[1].fX, three); |
| 741 | SkScalar ctl1Y = SkScalarDiv(args[0].fY + args[1].fY, three); |
| 742 | SkScalar ctl2X = SkScalarDiv(args[2].fX + args[1].fX, three); |
| 743 | SkScalar ctl2Y = SkScalarDiv(args[2].fY + args[1].fY, three); |
| 744 | appendCubic(ctl1X, ctl1Y, ctl2X, ctl2Y, args[2].fX, args[2].fY); |
| 745 | break; |
| 746 | } |
| 747 | case SkPath::kCubic_Verb: |
| 748 | appendCubic(args[1].fX, args[1].fY, args[2].fX, args[2].fY, |
| 749 | args[3].fX, args[3].fY); |
| 750 | break; |
| 751 | case SkPath::kClose_Verb: |
| 752 | closePath(); |
| 753 | break; |
| 754 | case SkPath::kDone_Verb: |
| 755 | break; |
| 756 | default: |
| 757 | SkASSERT(false); |
| 758 | break; |
| 759 | } |
| 760 | } |
| 761 | } |
| 762 | |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 763 | void SkPDFDevice::closePath() { |
| 764 | fContent.append("h\n"); |
| 765 | } |
| 766 | |
vandebo@chromium.org | a518086 | 2010-10-26 19:48:49 +0000 | [diff] [blame] | 767 | void SkPDFDevice::paintPath(SkPaint::Style style, SkPath::FillType fill) { |
| 768 | if (style == SkPaint::kFill_Style) |
| 769 | fContent.append("f"); |
| 770 | else if (style == SkPaint::kStrokeAndFill_Style) |
| 771 | fContent.append("B"); |
| 772 | else if (style == SkPaint::kStroke_Style) |
| 773 | fContent.append("S"); |
| 774 | |
| 775 | if (style != SkPaint::kStroke_Style) { |
| 776 | // Not supported yet. |
| 777 | NOT_IMPLEMENTED(fill == SkPath::kInverseEvenOdd_FillType, false); |
| 778 | NOT_IMPLEMENTED(fill == SkPath::kInverseWinding_FillType, false); |
| 779 | if (fill == SkPath::kEvenOdd_FillType) |
| 780 | fContent.append("*"); |
| 781 | } |
| 782 | fContent.append("\n"); |
| 783 | } |
| 784 | |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 785 | void SkPDFDevice::strokePath() { |
vandebo@chromium.org | a518086 | 2010-10-26 19:48:49 +0000 | [diff] [blame] | 786 | paintPath(SkPaint::kStroke_Style, SkPath::kWinding_FillType); |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 787 | } |
| 788 | |
vandebo@chromium.org | 7e2ff7c | 2010-11-03 23:55:28 +0000 | [diff] [blame] | 789 | void SkPDFDevice::pushGS() { |
| 790 | SkASSERT(fGraphicStackIndex < 2); |
| 791 | fContent.append("q\n"); |
| 792 | fGraphicStackIndex++; |
| 793 | fGraphicStack[fGraphicStackIndex] = fGraphicStack[fGraphicStackIndex - 1]; |
| 794 | } |
| 795 | |
| 796 | void SkPDFDevice::popGS() { |
| 797 | SkASSERT(fGraphicStackIndex > 0); |
| 798 | fContent.append("Q\n"); |
| 799 | fGraphicStackIndex--; |
| 800 | } |
| 801 | |
vandebo@chromium.org | 28be72b | 2010-11-11 21:37:00 +0000 | [diff] [blame] | 802 | void SkPDFDevice::setTextTransform(SkScalar x, SkScalar y, SkScalar textSkewX) { |
| 803 | // Flip the text about the x-axis to account for origin swap and include |
| 804 | // the passed parameters. |
| 805 | fContent.append("1 0 "); |
| 806 | fContent.appendScalar(0 - textSkewX); |
| 807 | fContent.append(" -1 "); |
| 808 | fContent.appendScalar(x); |
| 809 | fContent.append(" "); |
| 810 | fContent.appendScalar(y); |
| 811 | fContent.append(" Tm\n"); |
| 812 | } |
| 813 | |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 814 | void SkPDFDevice::internalDrawBitmap(const SkMatrix& matrix, |
| 815 | const SkBitmap& bitmap, |
| 816 | const SkPaint& paint) { |
vandebo@chromium.org | 7e2ff7c | 2010-11-03 23:55:28 +0000 | [diff] [blame] | 817 | SkMatrix scaled; |
| 818 | // Adjust for origin flip. |
| 819 | scaled.setScale(1, -1); |
| 820 | scaled.postTranslate(0, 1); |
| 821 | // Scale the image up from 1x1 to WxH. |
| 822 | scaled.postScale(bitmap.width(), bitmap.height()); |
| 823 | scaled.postConcat(matrix); |
| 824 | SkMatrix curTransform = setTransform(scaled); |
| 825 | |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 826 | SkPDFImage* image = new SkPDFImage(bitmap, paint); |
| 827 | fXObjectResources.push(image); // Transfer reference. |
| 828 | fContent.append("/X"); |
| 829 | fContent.appendS32(fXObjectResources.count() - 1); |
| 830 | fContent.append(" Do\n"); |
vandebo@chromium.org | 7e2ff7c | 2010-11-03 23:55:28 +0000 | [diff] [blame] | 831 | setTransform(curTransform); |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 832 | } |
| 833 | |
vandebo@chromium.org | 7e2ff7c | 2010-11-03 23:55:28 +0000 | [diff] [blame] | 834 | SkMatrix SkPDFDevice::setTransform(const SkMatrix& m) { |
| 835 | SkMatrix old = fGraphicStack[fGraphicStackIndex].fTransform; |
| 836 | if (old == m) |
| 837 | return old; |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 838 | |
vandebo@chromium.org | 7e2ff7c | 2010-11-03 23:55:28 +0000 | [diff] [blame] | 839 | if (old.getType() != SkMatrix::kIdentity_Mask) { |
| 840 | SkASSERT(fGraphicStackIndex > 0); |
| 841 | SkASSERT(fGraphicStack[fGraphicStackIndex - 1].fTransform.getType() == |
| 842 | SkMatrix::kIdentity_Mask); |
| 843 | SkASSERT(fGraphicStack[fGraphicStackIndex].fClip == |
| 844 | fGraphicStack[fGraphicStackIndex - 1].fClip); |
| 845 | popGS(); |
| 846 | } |
| 847 | if (m.getType() == SkMatrix::kIdentity_Mask) |
| 848 | return old; |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 849 | |
vandebo@chromium.org | 7e2ff7c | 2010-11-03 23:55:28 +0000 | [diff] [blame] | 850 | if (fGraphicStackIndex == 0 || fGraphicStack[fGraphicStackIndex].fClip != |
| 851 | fGraphicStack[fGraphicStackIndex - 1].fClip) |
| 852 | pushGS(); |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 853 | |
vandebo@chromium.org | ddbbd80 | 2010-10-26 19:45:06 +0000 | [diff] [blame] | 854 | SkScalar transform[6]; |
| 855 | SkAssertResult(m.pdfTransform(transform)); |
| 856 | for (size_t i = 0; i < SK_ARRAY_COUNT(transform); i++) { |
| 857 | fContent.appendScalar(transform[i]); |
| 858 | fContent.append(" "); |
| 859 | } |
| 860 | fContent.append("cm\n"); |
vandebo@chromium.org | 7e2ff7c | 2010-11-03 23:55:28 +0000 | [diff] [blame] | 861 | fGraphicStack[fGraphicStackIndex].fTransform = m; |
| 862 | |
| 863 | return old; |
vandebo@chromium.org | 9b49dc0 | 2010-10-20 22:23:29 +0000 | [diff] [blame] | 864 | } |