The Tor Browser: gfx/skia/trunk/src/pdf/SkPDFUtils.cpp@129ffea94266 (annotated)

gfx/skia/trunk/src/pdf/SkPDFUtils.cpp@129ffea94266 (annotated)

gfx/skia/trunk/src/pdf/SkPDFUtils.cpp

Sat, 03 Jan 2015 20:18:00 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Sat, 03 Jan 2015 20:18:00 +0100
branch: TOR_BUG_3246
changeset 7: 129ffea94266
permissions: -rw-r--r--

Conditionally enable double key logic according to:
private browsing mode or privacy.thirdparty.isolate preference and
implement in GetCookieStringCommon and FindCookie where it counts...
With some reservations of how to convince FindCookie users to test
condition and pass a nullptr when disabling double key logic.

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #include "SkData.h"
 #include "SkGeometry.h"
 #include "SkPaint.h"
 #include "SkPath.h"
 #include "SkPDFResourceDict.h"
 #include "SkPDFUtils.h"
 #include "SkStream.h"
 #include "SkString.h"
 #include "SkPDFTypes.h"
 //static
 SkPDFArray* SkPDFUtils::RectToArray(const SkRect& rect) {
     SkPDFArray* result = new SkPDFArray();
     result->reserve(4);
     result->appendScalar(rect.fLeft);
     result->appendScalar(rect.fTop);
     result->appendScalar(rect.fRight);
     result->appendScalar(rect.fBottom);
     return result;
 }
 // static
 SkPDFArray* SkPDFUtils::MatrixToArray(const SkMatrix& matrix) {
     SkScalar values[6];
     if (!matrix.asAffine(values)) {
         SkMatrix::SetAffineIdentity(values);
     }
     SkPDFArray* result = new SkPDFArray;
     result->reserve(6);
     for (size_t i = 0; i < SK_ARRAY_COUNT(values); i++) {
         result->appendScalar(values[i]);
     }
     return result;
 }
 // static
 void SkPDFUtils::AppendTransform(const SkMatrix& matrix, SkWStream* content) {
     SkScalar values[6];
     if (!matrix.asAffine(values)) {
         SkMatrix::SetAffineIdentity(values);
     }
     for (size_t i = 0; i < SK_ARRAY_COUNT(values); i++) {
         SkPDFScalar::Append(values[i], content);
         content->writeText(" ");
     }
     content->writeText("cm\n");
 }
 // static
 void SkPDFUtils::MoveTo(SkScalar x, SkScalar y, SkWStream* content) {
     SkPDFScalar::Append(x, content);
     content->writeText(" ");
     SkPDFScalar::Append(y, content);
     content->writeText(" m\n");
 }
 // static
 void SkPDFUtils::AppendLine(SkScalar x, SkScalar y, SkWStream* content) {
     SkPDFScalar::Append(x, content);
     content->writeText(" ");
     SkPDFScalar::Append(y, content);
     content->writeText(" l\n");
 }
 // static
 void SkPDFUtils::AppendCubic(SkScalar ctl1X, SkScalar ctl1Y,
                              SkScalar ctl2X, SkScalar ctl2Y,
                              SkScalar dstX, SkScalar dstY, SkWStream* content) {
     SkString cmd("y\n");
     SkPDFScalar::Append(ctl1X, content);
     content->writeText(" ");
     SkPDFScalar::Append(ctl1Y, content);
     content->writeText(" ");
     if (ctl2X != dstX || ctl2Y != dstY) {
         cmd.set("c\n");
         SkPDFScalar::Append(ctl2X, content);
         content->writeText(" ");
         SkPDFScalar::Append(ctl2Y, content);
         content->writeText(" ");
     }
     SkPDFScalar::Append(dstX, content);
     content->writeText(" ");
     SkPDFScalar::Append(dstY, content);
     content->writeText(" ");
     content->writeText(cmd.c_str());
 }
 // static
 void SkPDFUtils::AppendRectangle(const SkRect& rect, SkWStream* content) {
     // Skia has 0,0 at top left, pdf at bottom left.  Do the right thing.
     SkScalar bottom = SkMinScalar(rect.fBottom, rect.fTop);
     SkPDFScalar::Append(rect.fLeft, content);
     content->writeText(" ");
     SkPDFScalar::Append(bottom, content);
     content->writeText(" ");
     SkPDFScalar::Append(rect.width(), content);
     content->writeText(" ");
     SkPDFScalar::Append(rect.height(), content);
     content->writeText(" re\n");
 }
 // static
 void SkPDFUtils::EmitPath(const SkPath& path, SkPaint::Style paintStyle,
                           SkWStream* content) {
     // Filling a path with no area results in a drawing in PDF renderers but
     // Chrome expects to be able to draw some such entities with no visible
     // result, so we detect those cases and discard the drawing for them.
     // Specifically: moveTo(X), lineTo(Y) and moveTo(X), lineTo(X), lineTo(Y).
     enum SkipFillState {
         kEmpty_SkipFillState         = 0,
         kSingleLine_SkipFillState    = 1,
         kNonSingleLine_SkipFillState = 2,
     };
     SkipFillState fillState = kEmpty_SkipFillState;
     if (paintStyle != SkPaint::kFill_Style) {
         fillState = kNonSingleLine_SkipFillState;
     }
     SkPoint lastMovePt = SkPoint::Make(0,0);
     SkDynamicMemoryWStream currentSegment;
     SkPoint args[4];
     SkPath::Iter iter(path, false);
     for (SkPath::Verb verb = iter.next(args);
          verb != SkPath::kDone_Verb;
          verb = iter.next(args)) {
         // args gets all the points, even the implicit first point.
         switch (verb) {
             case SkPath::kMove_Verb:
                 MoveTo(args[0].fX, args[0].fY, &currentSegment);
                 lastMovePt = args[0];
                 fillState = kEmpty_SkipFillState;
                 break;
             case SkPath::kLine_Verb:
                 AppendLine(args[1].fX, args[1].fY, &currentSegment);
                 if (fillState == kEmpty_SkipFillState) {
                    if (args[0] != lastMovePt) {
                        fillState = kSingleLine_SkipFillState;
                    }
                 } else if (fillState == kSingleLine_SkipFillState) {
                     fillState = kNonSingleLine_SkipFillState;
                 }
                 break;
             case SkPath::kQuad_Verb: {
                 SkPoint cubic[4];
                 SkConvertQuadToCubic(args, cubic);
                 AppendCubic(cubic[1].fX, cubic[1].fY, cubic[2].fX, cubic[2].fY,
                             cubic[3].fX, cubic[3].fY, &currentSegment);
                 fillState = kNonSingleLine_SkipFillState;
                 break;
             }
             case SkPath::kCubic_Verb:
                 AppendCubic(args[1].fX, args[1].fY, args[2].fX, args[2].fY,
                             args[3].fX, args[3].fY, &currentSegment);
                 fillState = kNonSingleLine_SkipFillState;
                 break;
             case SkPath::kClose_Verb:
                 if (fillState != kSingleLine_SkipFillState) {
                     ClosePath(&currentSegment);
                     SkData* data = currentSegment.copyToData();
                     content->write(data->data(), data->size());
                     data->unref();
                 }
                 currentSegment.reset();
                 break;
             default:
                 SkASSERT(false);
                 break;
         }
     }
     if (currentSegment.bytesWritten() > 0) {
         SkData* data = currentSegment.copyToData();
         content->write(data->data(), data->size());
         data->unref();
     }
 }
 // static
 void SkPDFUtils::ClosePath(SkWStream* content) {
     content->writeText("h\n");
 }
 // static
 void SkPDFUtils::PaintPath(SkPaint::Style style, SkPath::FillType fill,
                            SkWStream* content) {
     if (style == SkPaint::kFill_Style) {
         content->writeText("f");
     } else if (style == SkPaint::kStrokeAndFill_Style) {
         content->writeText("B");
     } else if (style == SkPaint::kStroke_Style) {
         content->writeText("S");
     }
     if (style != SkPaint::kStroke_Style) {
         NOT_IMPLEMENTED(fill == SkPath::kInverseEvenOdd_FillType, false);
         NOT_IMPLEMENTED(fill == SkPath::kInverseWinding_FillType, false);
         if (fill == SkPath::kEvenOdd_FillType) {
             content->writeText("*");
         }
     }
     content->writeText("\n");
 }
 // static
 void SkPDFUtils::StrokePath(SkWStream* content) {
     SkPDFUtils::PaintPath(
         SkPaint::kStroke_Style, SkPath::kWinding_FillType, content);
 }
 // static
 void SkPDFUtils::DrawFormXObject(int objectIndex, SkWStream* content) {
     content->writeText("/");
     content->writeText(SkPDFResourceDict::getResourceName(
             SkPDFResourceDict::kXObject_ResourceType,
             objectIndex).c_str());
     content->writeText(" Do\n");
 }
 // static
 void SkPDFUtils::ApplyGraphicState(int objectIndex, SkWStream* content) {
     content->writeText("/");
     content->writeText(SkPDFResourceDict::getResourceName(
             SkPDFResourceDict::kExtGState_ResourceType,
             objectIndex).c_str());
     content->writeText(" gs\n");
 }
 // static
 void SkPDFUtils::ApplyPattern(int objectIndex, SkWStream* content) {
     // Select Pattern color space (CS, cs) and set pattern object as current
     // color (SCN, scn)
     SkString resourceName = SkPDFResourceDict::getResourceName(
             SkPDFResourceDict::kPattern_ResourceType,
             objectIndex);
     content->writeText("/Pattern CS/Pattern cs/");
     content->writeText(resourceName.c_str());
     content->writeText(" SCN/");
     content->writeText(resourceName.c_str());
     content->writeText(" scn\n");
 }

The Tor Browser / annotate

gfx/skia/trunk/src/pdf/SkPDFUtils.cpp@129ffea94266 (annotated)

gfx/skia/trunk/src/pdf/SkPDFUtils.cpp