pdfviewer: debug code for drawText (show magenta background for text, to show text even when we fai…

experimental/PdfViewer/SkPdfUtils.h

 #ifndef __DEFINED__SkPdfUtils
 #define __DEFINED__SkPdfUtils
 
-#include "SkPdfBasics.h"
+#include "SkMatrix.h"
+#include "SkRect.h"
 
 class SkPdfArray;
+class SkPdfContext;
+class SkCanvas;
+class SkPdfNativeObject;
+
+// TODO(edisonn): temporary code, to report how much of the PDF we actually think we rendered.
+enum SkPdfResult {
+    kOK_SkPdfResult,
+    kPartial_SkPdfResult,
+    kNYI_SkPdfResult,
+    kIgnoreError_SkPdfResult,
+    kError_SkPdfResult,
+    kUnsupported_SkPdfResult,
+
+    kCount_SkPdfResult
+};
+
+struct NotOwnedString {
+    const unsigned char* fBuffer;
+    size_t fBytes;
+
+    static void init(NotOwnedString* str) {
+        str->fBuffer = NULL;
+        str->fBytes = 0;
+    }
+
+    static void init(NotOwnedString* str, const char* sz) {
+        str->fBuffer = (const unsigned char*)sz;
+        str->fBytes = strlen(sz);
+    }
+
+    bool equals(const char* sz) {
+        return strncmp((const char*)fBuffer, sz, fBytes) == 0 && fBytes == strlen(sz);
+
+    }
+};
 
 SkMatrix SkMatrixFromPdfArray(SkPdfArray* pdfArray);
 
-PdfResult doType3Char(PdfContext* pdfContext, SkCanvas* canvas, const SkPdfObject* skobj, SkRect bBox, SkMatrix matrix, double textSize);
+SkPdfResult doType3Char(SkPdfContext* pdfContext, SkCanvas* canvas, const SkPdfNativeObject* skobj, SkRect bBox, SkMatrix matrix, double textSize);
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+//
+// TRACE functions
+//
+#ifdef PDF_TRACE
+void SkTraceMatrix(const SkMatrix& matrix, const char* sz);
+void SkTraceRect(const SkRect& rect, const char* sz);
+#else
+#define SkTraceMatrix(a,b)
+#define SkTraceRect(a,b)
+#endif
 
 #endif   // __DEFINED__SkPdfUtils