SkPDF: Add sk_sp setters; .release() becomes std::move()

src/pdf/SkPDFFont.cpp

 /*
  * 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 <ctype.h>
 
 #include "SkData.h"
@@ skipping 279 matching lines @@
     content->writeDecAsText(box.fLeft);
     content->writeText(" ");
     content->writeDecAsText(box.fTop);
     content->writeText(" ");
     content->writeDecAsText(box.fRight);
     content->writeText(" ");
     content->writeDecAsText(box.fBottom);
     content->writeText(" d1\n");
 }
 
-SkPDFArray* makeFontBBox(SkIRect glyphBBox, uint16_t emSize) {
-    SkPDFArray* bbox = new SkPDFArray;
+static sk_sp<SkPDFArray> makeFontBBox(SkIRect glyphBBox, uint16_t emSize) {
+    auto bbox = sk_make_sp<SkPDFArray>();
     bbox->reserve(4);
     bbox->appendScalar(scaleFromFontUnits(glyphBBox.fLeft, emSize));
     bbox->appendScalar(scaleFromFontUnits(glyphBBox.fBottom, emSize));
     bbox->appendScalar(scaleFromFontUnits(glyphBBox.fRight, emSize));
     bbox->appendScalar(scaleFromFontUnits(glyphBBox.fTop, emSize));
     return bbox;
 }
 
-SkPDFArray* appendWidth(const int16_t& width, uint16_t emSize,
+static void appendWidth(const int16_t& width, uint16_t emSize,
                         SkPDFArray* array) {
     array->appendScalar(scaleFromFontUnits(width, emSize));
-    return array;
 }
 
-SkPDFArray* appendVerticalAdvance(
+static void appendVerticalAdvance(
         const SkAdvancedTypefaceMetrics::VerticalMetric& advance,
         uint16_t emSize, SkPDFArray* array) {
     appendWidth(advance.fVerticalAdvance, emSize, array);
     appendWidth(advance.fOriginXDisp, emSize, array);
     appendWidth(advance.fOriginYDisp, emSize, array);
-    return array;
 }
 
 template <typename Data>
 SkPDFArray* composeAdvanceData(
         SkAdvancedTypefaceMetrics::AdvanceMetric<Data>* advanceInfo,
         uint16_t emSize,
-        SkPDFArray* (*appendAdvance)(const Data& advance, uint16_t emSize,
-                                     SkPDFArray* array),
+        void (*appendAdvance)(const Data& advance, uint16_t emSize,
+                              SkPDFArray* array),
         Data* defaultAdvance) {
     SkPDFArray* result = new SkPDFArray();
     for (; advanceInfo != nullptr; advanceInfo = advanceInfo->fNext.get()) {
         switch (advanceInfo->fType) {
             case SkAdvancedTypefaceMetrics::WidthRange::kDefault: {
                 SkASSERT(advanceInfo->fAdvance.count() == 1);
                 *defaultAdvance = advanceInfo->fAdvance[0];
                 break;
             }
             case SkAdvancedTypefaceMetrics::WidthRange::kRange: {
                 auto advanceArray = sk_make_sp<SkPDFArray>();
                 for (int j = 0; j < advanceInfo->fAdvance.count(); j++)
                     appendAdvance(advanceInfo->fAdvance[j], emSize,
                                   advanceArray.get());
                 result->appendInt(advanceInfo->fStartId);
-                result->appendObject(advanceArray.release());
+                result->appendObject(std::move(advanceArray));
                 break;
             }
             case SkAdvancedTypefaceMetrics::WidthRange::kRun: {
                 SkASSERT(advanceInfo->fAdvance.count() == 1);
                 result->appendInt(advanceInfo->fStartId);
                 result->appendInt(advanceInfo->fEndId);
                 appendAdvance(advanceInfo->fAdvance[0], emSize, result);
                 break;
             }
         }
@@ skipping 195 matching lines @@
             }
         }
     }
 
     // The spec requires all bfchar entries for a font must come before bfrange
     // entries.
     append_bfchar_section(bfcharEntries, cmap);
     append_bfrange_section(bfrangeEntries, cmap);
 }
 
-static SkPDFStream* generate_tounicode_cmap(
+static sk_sp<SkPDFStream> generate_tounicode_cmap(
         const SkTDArray<SkUnichar>& glyphToUnicode,
         const SkPDFGlyphSet* subset,
         bool multiByteGlyphs,
         uint16_t firstGlyphID,
         uint16_t lastGlyphID) {
     SkDynamicMemoryWStream cmap;
     if (multiByteGlyphs) {
         append_tounicode_header(&cmap, firstGlyphID, lastGlyphID);
     } else {
         append_tounicode_header(&cmap, 1, lastGlyphID - firstGlyphID + 1);
     }
     append_cmap_sections(glyphToUnicode, subset, &cmap, multiByteGlyphs,
                          firstGlyphID, lastGlyphID);
     append_cmap_footer(&cmap);
     sk_sp<SkData> cmapData(cmap.copyToData());
-    return new SkPDFStream(cmapData.get());
+    return sk_make_sp<SkPDFStream>(cmapData.get());
 }
 
 #if defined (SK_SFNTLY_SUBSETTER)
 static void sk_delete_array(const void* ptr, void*) {
     // Use C-style cast to cast away const and cast type simultaneously.
     delete[] (unsigned char*)ptr;
 }
 #endif
 
 #if defined(SK_SFNTLY_SUBSETTER)
@@ skipping 426 matching lines @@
 #endif
 
 bool SkPDFType0Font::populate(const SkPDFGlyphSet* subset) {
     insertName("Subtype", "Type0");
     insertName("BaseFont", fontInfo()->fFontName);
     insertName("Encoding", "Identity-H");
 
     sk_sp<SkPDFCIDFont> newCIDFont(
             new SkPDFCIDFont(fontInfo(), typeface(), subset));
     auto descendantFonts = sk_make_sp<SkPDFArray>();
-    descendantFonts->appendObjRef(newCIDFont.release());
-    this->insertObject("DescendantFonts", descendantFonts.release());
+    descendantFonts->appendObjRef(std::move(newCIDFont));
+    this->insertObject("DescendantFonts", std::move(descendantFonts));
 
     this->populateToUnicodeTable(subset);
 
     SkDEBUGCODE(fPopulated = true);
     return true;
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 // class SkPDFCIDFont
 ///////////////////////////////////////////////////////////////////////////////
 
 SkPDFCIDFont::SkPDFCIDFont(const SkAdvancedTypefaceMetrics* info,
                            SkTypeface* typeface,
                            const SkPDFGlyphSet* subset)
     : SkPDFFont(info, typeface, nullptr) {
     this->populate(subset);
 }
 
 SkPDFCIDFont::~SkPDFCIDFont() {}
 
 bool SkPDFCIDFont::addFontDescriptor(int16_t defaultWidth,
                                      const SkTDArray<uint32_t>* subset) {
     auto descriptor = sk_make_sp<SkPDFDict>("FontDescriptor");
     setFontDescriptor(descriptor.get());
     if (!addCommonFontDescriptorEntries(defaultWidth)) {
-        this->insertObjRef("FontDescriptor", descriptor.release());
+        this->insertObjRef("FontDescriptor", std::move(descriptor));
         return false;
     }
     SkASSERT(this->canEmbed());
 
     switch (getType()) {
         case SkAdvancedTypefaceMetrics::kTrueType_Font: {
             size_t fontSize = 0;
 #if defined(SK_SFNTLY_SUBSETTER)
             if (this->canSubset()) {
                 sk_sp<SkPDFStream> fontStream;
                 SkPDFStream* rawStream = nullptr;
                 fontSize = get_subset_font_stream(fontInfo()->fFontName.c_str(),
                                                   typeface(),
                                                   *subset,
                                                   &rawStream);
                 if (rawStream) {
                     fontStream.reset(rawStream);
                     fontStream->insertInt("Length1", fontSize);
-                    descriptor->insertObjRef("FontFile2", fontStream.release());
+                    descriptor->insertObjRef("FontFile2", std::move(fontStream));
                     break;
                 }
             }
 #endif
             sk_sp<SkPDFSharedStream> fontStream;
             SkAutoTDelete<SkStreamAsset> fontData(
                     this->typeface()->openStream(nullptr));
             SkASSERT(fontData);
             fontSize = fontData->getLength();
             SkASSERT(fontSize > 0);
             fontStream.reset(new SkPDFSharedStream(fontData.detach()));
             fontStream->dict()->insertInt("Length1", fontSize);
-            descriptor->insertObjRef("FontFile2", fontStream.release());
+            descriptor->insertObjRef("FontFile2", std::move(fontStream));
             break;
         }
         case SkAdvancedTypefaceMetrics::kCFF_Font:
         case SkAdvancedTypefaceMetrics::kType1CID_Font: {
             sk_sp<SkPDFSharedStream> fontStream(
                     new SkPDFSharedStream(this->typeface()->openStream(nullptr)));
 
             if (getType() == SkAdvancedTypefaceMetrics::kCFF_Font) {
                 fontStream->dict()->insertName("Subtype", "Type1C");
             } else {
                 fontStream->dict()->insertName("Subtype", "CIDFontType0c");
             }
-            descriptor->insertObjRef("FontFile3", fontStream.release());
+            descriptor->insertObjRef("FontFile3", std::move(fontStream));
             break;
         }
         default:
             SkASSERT(false);
     }
-    this->insertObjRef("FontDescriptor", descriptor.release());
+    this->insertObjRef("FontDescriptor", std::move(descriptor));
     return true;
 }
 
 bool SkPDFCIDFont::populate(const SkPDFGlyphSet* subset) {
     // Generate new font metrics with advance info for true type fonts.
     if (fontInfo()->fType == SkAdvancedTypefaceMetrics::kTrueType_Font) {
         // Generate glyph id array.
         SkTDArray<uint32_t> glyphIDs;
         if (subset) {
             // Always include glyph 0.
@@ skipping 26 matching lines @@
         insertName("Subtype", "CIDFontType2");
         insertName("CIDToGIDMap", "Identity");
     } else {
         SkASSERT(false);
     }
 
     auto sysInfo = sk_make_sp<SkPDFDict>();
     sysInfo->insertString("Registry", "Adobe");
     sysInfo->insertString("Ordering", "Identity");
     sysInfo->insertInt("Supplement", 0);
-    this->insertObject("CIDSystemInfo", sysInfo.release());
+    this->insertObject("CIDSystemInfo", std::move(sysInfo));
 
     if (fontInfo()->fGlyphWidths.get()) {
         int16_t defaultWidth = 0;
         sk_sp<SkPDFArray> widths(
             composeAdvanceData(fontInfo()->fGlyphWidths.get(),
                                fontInfo()->fEmSize, &appendWidth,
                                &defaultWidth));
         if (widths->size())
-            this->insertObject("W", widths.release());
+            this->insertObject("W", std::move(widths));
         if (defaultWidth != 0) {
             this->insertScalar(
                     "DW",
                     scaleFromFontUnits(defaultWidth, fontInfo()->fEmSize));
         }
     }
     if (fontInfo()->fVerticalMetrics.get()) {
         struct SkAdvancedTypefaceMetrics::VerticalMetric defaultAdvance;
         defaultAdvance.fVerticalAdvance = 0;
         defaultAdvance.fOriginXDisp = 0;
         defaultAdvance.fOriginYDisp = 0;
         sk_sp<SkPDFArray> advances(
             composeAdvanceData(fontInfo()->fVerticalMetrics.get(),
                                fontInfo()->fEmSize, &appendVerticalAdvance,
                                &defaultAdvance));
         if (advances->size())
-            this->insertObject("W2", advances.release());
+            this->insertObject("W2", std::move(advances));
         if (defaultAdvance.fVerticalAdvance ||
                 defaultAdvance.fOriginXDisp ||
                 defaultAdvance.fOriginYDisp) {
-            this->insertObject("DW2",
-                               appendVerticalAdvance(defaultAdvance,
-                                                     fontInfo()->fEmSize,
-                                                     new SkPDFArray));
+            auto array = sk_make_sp<SkPDFArray>();
+            appendVerticalAdvance(defaultAdvance,
+                                  fontInfo()->fEmSize,
+                                  array.get());
+            this->insertObject("DW2", std::move(array));
         }
     }
 
     return true;
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 // class SkPDFType1Font
 ///////////////////////////////////////////////////////////////////////////////
 
 SkPDFType1Font::SkPDFType1Font(const SkAdvancedTypefaceMetrics* info,
                                SkTypeface* typeface,
                                uint16_t glyphID,
                                SkPDFDict* relatedFontDescriptor)
     : SkPDFFont(info, typeface, relatedFontDescriptor) {
     this->populate(glyphID);
 }
 
 SkPDFType1Font::~SkPDFType1Font() {}
 
 bool SkPDFType1Font::addFontDescriptor(int16_t defaultWidth) {
     if (SkPDFDict* descriptor = getFontDescriptor()) {
-        this->insertObjRef("FontDescriptor", SkRef(descriptor));
+        this->insertObjRef("FontDescriptor",
+                           sk_sp<SkPDFDict>(SkRef(descriptor)));
         return true;
     }
 
     auto descriptor = sk_make_sp<SkPDFDict>("FontDescriptor");
     setFontDescriptor(descriptor.get());
 
     int ttcIndex;
     size_t header SK_INIT_TO_AVOID_WARNING;
     size_t data SK_INIT_TO_AVOID_WARNING;
     size_t trailer SK_INIT_TO_AVOID_WARNING;
     SkAutoTDelete<SkStream> rawFontData(typeface()->openStream(&ttcIndex));
     sk_sp<SkData> fontData(handle_type1_stream(rawFontData.get(), &header,
                                                       &data, &trailer));
     if (fontData.get() == nullptr) {
         return false;
     }
     SkASSERT(this->canEmbed());
     auto fontStream = sk_make_sp<SkPDFStream>(fontData.get());
     fontStream->insertInt("Length1", header);
     fontStream->insertInt("Length2", data);
     fontStream->insertInt("Length3", trailer);
-    descriptor->insertObjRef("FontFile", fontStream.release());
+    descriptor->insertObjRef("FontFile", std::move(fontStream));
 
-    this->insertObjRef("FontDescriptor", descriptor.release());
+    this->insertObjRef("FontDescriptor", std::move(descriptor));
 
     return addCommonFontDescriptorEntries(defaultWidth);
 }
 
 bool SkPDFType1Font::populate(int16_t glyphID) {
     SkASSERT(!fontInfo()->fVerticalMetrics.get());
     SkASSERT(fontInfo()->fGlyphWidths.get());
 
     adjustGlyphRangeForSingleByteEncoding(glyphID);
 
@@ skipping 28 matching lines @@
 
 
     auto encDiffs = sk_make_sp<SkPDFArray>();
     encDiffs->reserve(lastGlyphID() - firstGlyphID() + 2);
     encDiffs->appendInt(1);
     for (int gID = firstGlyphID(); gID <= lastGlyphID(); gID++) {
         encDiffs->appendName(fontInfo()->fGlyphNames->get()[gID].c_str());
     }
 
     auto encoding = sk_make_sp<SkPDFDict>("Encoding");
-    encoding->insertObject("Differences", encDiffs.release());
-    this->insertObject("Encoding", encoding.release());
+    encoding->insertObject("Differences", std::move(encDiffs));
+    this->insertObject("Encoding", std::move(encoding));
     return true;
 }
 
 void SkPDFType1Font::addWidthInfoFromRange(
         int16_t defaultWidth,
         const SkAdvancedTypefaceMetrics::WidthRange* widthRangeEntry) {
     auto widthArray = sk_make_sp<SkPDFArray>();
     int firstChar = 0;
     if (widthRangeEntry) {
         const uint16_t emSize = fontInfo()->fEmSize;
         int startIndex = firstGlyphID() - widthRangeEntry->fStartId;
         int endIndex = startIndex + lastGlyphID() - firstGlyphID() + 1;
         if (startIndex < 0)
             startIndex = 0;
         if (endIndex > widthRangeEntry->fAdvance.count())
             endIndex = widthRangeEntry->fAdvance.count();
         if (widthRangeEntry->fStartId == 0) {
             appendWidth(widthRangeEntry->fAdvance[0], emSize, widthArray.get());
         } else {
             firstChar = startIndex + widthRangeEntry->fStartId;
         }
         for (int i = startIndex; i < endIndex; i++) {
             appendWidth(widthRangeEntry->fAdvance[i], emSize, widthArray.get());
         }
     } else {
         appendWidth(defaultWidth, 1000, widthArray.get());
     }
     this->insertInt("FirstChar", firstChar);
     this->insertInt("LastChar", firstChar + widthArray->size() - 1);
-    this->insertObject("Widths", widthArray.release());
+    this->insertObject("Widths", std::move(widthArray));
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 // class SkPDFType3Font
 ///////////////////////////////////////////////////////////////////////////////
 
 SkPDFType3Font::SkPDFType3Font(const SkAdvancedTypefaceMetrics* info,
                                SkTypeface* typeface,
                                uint16_t glyphID)
     : SkPDFFont(info, typeface, nullptr) {
@@ skipping 48 matching lines @@
                                     &content);
         const SkPath* path = cache->findPath(glyph);
         if (path) {
             SkPDFUtils::EmitPath(*path, paint.getStyle(), &content);
             SkPDFUtils::PaintPath(paint.getStyle(), path->getFillType(),
                                   &content);
         }
         SkAutoTDelete<SkMemoryStream> glyphStream(new SkMemoryStream());
         glyphStream->setData(content.copyToData())->unref();
 
-        charProcs->insertObjRef(characterName,
-                                new SkPDFStream(glyphStream.get()));
+        charProcs->insertObjRef(
+                characterName, sk_make_sp<SkPDFStream>(glyphStream.get()));
     }
 
-    encoding->insertObject("Differences", encDiffs.release());
+    encoding->insertObject("Differences", std::move(encDiffs));
 
-    this->insertObject("CharProcs", charProcs.release());
-    this->insertObject("Encoding", encoding.release());
+    this->insertObject("CharProcs", std::move(charProcs));
+    this->insertObject("Encoding", std::move(encoding));
 
     this->insertObject("FontBBox", makeFontBBox(bbox, 1000));
     this->insertInt("FirstChar", 1);
     this->insertInt("LastChar", lastGlyphID() - firstGlyphID() + 1);
-    this->insertObject("Widths", widthArray.release());
+    this->insertObject("Widths", std::move(widthArray));
     this->insertName("CIDToGIDMap", "Identity");
 
     this->populateToUnicodeTable(nullptr);
     return true;
 }
 
 SkPDFFont::Match SkPDFFont::IsMatch(SkPDFFont* existingFont,
                                     uint32_t existingFontID,
                                     uint16_t existingGlyphID,
                                     uint32_t searchFontID,
@@ skipping 25 matching lines @@
     sk_sp<const SkAdvancedTypefaceMetrics> fontMetrics(
             face->getAdvancedTypefaceMetrics(
                     SkTypeface::kNo_PerGlyphInfo, nullptr, 0));
     if (fontMetrics) {
         canEmbed = !SkToBool(
                 fontMetrics->fFlags &
                 SkAdvancedTypefaceMetrics::kNotEmbeddable_FontFlag);
     }
     return *canon->fCanEmbedTypeface.set(id, canEmbed);
 }