begin to skiafy PDF headers : removing use of SkRefPtr

Review URL: https://codereview.appspot.com/6526050

git-svn-id: http://skia.googlecode.com/svn/trunk@5596 2bbb7eff-a529-9590-31e7-b0007b416f81

include/pdf/SkPDFDevice.h

@@ -139,13 +139,14 @@ public:
      */
     SK_API const SkTDArray<SkPDFFont*>& getFontResources() const;
 
-    /** Returns the media box for this device.
+    /** Returns a copy of the media box for this device. The caller is required
+     *  to unref() this when it is finished.
      */
-    SK_API SkRefPtr<SkPDFArray> getMediaBox() const;
+    SK_API SkPDFArray* copyMediaBox() const;
 
-    /** Get the annotations from this page.
+    /** Get the annotations from this page, or NULL if there are none.
      */
-    SK_API SkRefPtr<SkPDFArray> getAnnotations() const;
+    SK_API SkPDFArray* getAnnotations() const { return fAnnotations; }
 
     /** Returns a SkStream with the page contents.  The caller is responsible
         for a reference to the returned value.
@@ -185,7 +186,7 @@ private:
     SkMatrix fInitialTransform;
     SkClipStack fExistingClipStack;
     SkRegion fExistingClipRegion;
-    SkRefPtr<SkPDFArray> fAnnotations;
+    SkPDFArray* fAnnotations;
     SkRefPtr<SkPDFDict> fResourceDict;
 
     SkTDArray<SkPDFGraphicState*> fGraphicStateResources;

src/pdf/SkPDFDevice.cpp

@@ -546,6 +546,7 @@ SkPDFDevice::~SkPDFDevice() {
 }
 
 void SkPDFDevice::init() {
+    fAnnotations = NULL;
     fResourceDict = NULL;
     fContentEntries.reset();
     fLastContentEntry = NULL;
@@ -562,6 +563,8 @@ void SkPDFDevice::cleanUp(bool clearFontUsage) {
     fXObjectResources.unrefAll();
     fFontResources.unrefAll();
     fShaderResources.unrefAll();
+    SkSafeUnref(fAnnotations);
+
     if (clearFontUsage) {
         fFontGlyphUsage->reset();
     }
@@ -1103,12 +1106,11 @@ const SkTDArray<SkPDFFont*>& SkPDFDevice::getFontResources() const {
     return fFontResources;
 }
 
-SkRefPtr<SkPDFArray> SkPDFDevice::getMediaBox() const {
+SkPDFArray* SkPDFDevice::copyMediaBox() const {
-    SkRefPtr<SkPDFInt> zero = new SkPDFInt(0);
+    // should this be a singleton?
-    zero->unref();  // SkRefPtr and new both took a reference.
+    SkAutoTUnref<SkPDFInt> zero(SkNEW_ARGS(SkPDFInt, (0)));
 
-    SkRefPtr<SkPDFArray> mediaBox = new SkPDFArray();
+    SkPDFArray* mediaBox = SkNEW(SkPDFArray);
-    mediaBox->unref();  // SkRefPtr and new both took a reference.
     mediaBox->reserve(4);
     mediaBox->append(zero.get());
     mediaBox->append(zero.get());
@@ -1117,10 +1119,6 @@ SkRefPtr<SkPDFArray> SkPDFDevice::getMediaBox() const {
     return mediaBox;
 }
 
-SkRefPtr<SkPDFArray> SkPDFDevice::getAnnotations() const {
-    return SkRefPtr<SkPDFArray>(fAnnotations);
-}
-
 SkStream* SkPDFDevice::content() const {
     SkMemoryStream* result = new SkMemoryStream;
     result->setData(this->copyContentToData())->unref();
@@ -1196,9 +1194,8 @@ bool SkPDFDevice::handleAnnotations(const SkRect& r, const SkMatrix& matrix,
     SkRect translatedRect;
     transform.mapRect(&translatedRect, r);
 
-    if (fAnnotations.get() == NULL) {
+    if (NULL == fAnnotations) {
-        fAnnotations = new SkPDFArray;
+        fAnnotations = SkNEW(SkPDFArray);
-        fAnnotations->unref();  // Both new and SkRefPtr took a reference.
     }
     SkAutoTUnref<SkPDFDict> annotation(new SkPDFDict("Annot"));
     annotation->insertName("Subtype", "Link");

src/pdf/SkPDFFormXObject.cpp

@@ -28,7 +28,7 @@ SkPDFFormXObject::SkPDFFormXObject(SkPDFDevice* device) {
 
     insertName("Type", "XObject");
     insertName("Subtype", "Form");
-    insert("BBox", device->getMediaBox().get());
+    SkSafeUnref(this->insert("BBox", device->copyMediaBox()));
     insert("Resources", device->getResourceDict());
 
     // We invert the initial transform and apply that to the xobject so that

src/pdf/SkPDFPage.cpp

@@ -23,12 +23,12 @@ void SkPDFPage::finalizePage(SkPDFCatalog* catalog, bool firstPage,
                              SkTDArray<SkPDFObject*>* resourceObjects) {
     if (fContentStream.get() == NULL) {
         insert("Resources", fDevice->getResourceDict());
-        insert("MediaBox", fDevice->getMediaBox().get());
+        SkSafeUnref(this->insert("MediaBox", fDevice->copyMediaBox()));
         if (!SkToBool(catalog->getDocumentFlags() &
                       SkPDFDocument::kNoLinks_Flags)) {
-            SkRefPtr<SkPDFArray> annots = fDevice->getAnnotations();
+            SkPDFArray* annots = fDevice->getAnnotations();
-            if (annots.get() && annots->size() > 0) {
+            if (annots && annots->size() > 0) {
-                insert("Annots", annots.get());
+                insert("Annots", annots);
             }
         }