pdfviewer: (draft, not to be checked in, just for backup online) gs implementation

experimental/PdfViewer/SkPdfBasics.cpp

 #include "SkPdfBasics.h"
 #include "SkPdfNativeTokenizer.h"
 
+#include "SkDashPathEffect.h"
+
 PdfContext::PdfContext(SkNativeParsedPDF* doc)
     : fPdfDoc(doc)
     , fTmpPageAllocator(new SkPdfAllocator()) {
 }
 
 PdfContext::~PdfContext() {
     delete fTmpPageAllocator;
 }
+
+void SkPdfGraphicsState::applyGraphicsState(SkPaint* paint, bool stroking) {
+    if (stroking) {
+        fStroking.applyGraphicsState(paint);
+    } else {
+        fNonStroking.applyGraphicsState(paint);
+    }
+
+    // TODO(edisonn): get this from pdfContext->options,
+    // or pdfContext->addPaintOptions(&paint);
+    paint->setAntiAlias(true);
+
+    // TODO(edisonn): miter, ...
+    if (stroking) {
+        paint->setStrokeWidth(SkDoubleToScalar(fLineWidth));
+        // TODO(edisonn): perf, two sets of allocs, create SkDashPathEffect constr that takes ownership
+        // of the intervals
+        if (fDashArrayLength > 0 && fDashPhase > 0) {
+            paint->setPathEffect(new SkDashPathEffect(fDashArray, fDashArrayLength, fDashPhase))->unref();
+        }
+    }
+}