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

experimental/PdfViewer/SkPdfFont.h

 #ifndef __DEFINED__SkPdfFont
 #define __DEFINED__SkPdfFont
 
 #include "SkPdfHeaders_autogen.h"
 #include "SkPdfMapper_autogen.h"
 
 #include <map>
 #include <string>
 
 #include "SkTypeface.h"
 #include "SkUtils.h"
-#include "SkPdfBasics.h"
+#include "SkPdfGraphicsState.h"
 #include "SkPdfUtils.h"
 
 
 class SkPdfType0Font;
 class SkPdfType1Font;
 class SkPdfType3Font;
 class SkPdfTrueTypeFont;
 class SkPdfMultiMasterFont;
 class SkPdfFont;
 
 struct SkPdfStandardFontEntry {
     // We don't own this pointer!
     const char* fName;
     bool fIsBold;
     bool fIsItalic;
     SkPdfStandardFontEntry()
     : fName(NULL),
       fIsBold(false),
       fIsItalic(false) {}
 
     SkPdfStandardFontEntry(const char* name, bool bold, bool italic)
         : fName(name),
           fIsBold(bold),
           fIsItalic(italic) {}
 };
 
 std::map<std::string, SkPdfStandardFontEntry>& getStandardFonts();
 SkTypeface* SkTypefaceFromPdfStandardFont(const char* fontName, bool bold, bool italic);
-SkPdfFont* fontFromName(SkNativeParsedPDF* doc, SkPdfObject* obj, const char* fontName);
+SkPdfFont* fontFromName(SkPdfNativeDoc* doc, SkPdfNativeObject* obj, const char* fontName);
 
 struct SkUnencodedText {
     void* text;
     int len;
 
 public:
     SkUnencodedText(const SkPdfString* obj) {
         text = (void*)obj->c_str();
         len = obj->lenstr();
     }
@@ skipping 18 matching lines @@
 
 class SkPdfEncoding {
 public:
     virtual bool decodeText(const SkUnencodedText& textIn, SkDecodedText* textOut) const = 0;
     static SkPdfEncoding* fromName(const char* name);
 };
 
 std::map<std::string, SkPdfEncoding*>& getStandardEncodings();
 
 class SkPdfToUnicode {
-    SkNativeParsedPDF* fParsed;
+    SkPdfNativeDoc* fParsed;
     // TODO(edisonn): hide public members
 public:
     unsigned short* fCMapEncoding;
     unsigned char* fCMapEncodingFlag;
 
-    SkPdfToUnicode(SkNativeParsedPDF* parsed, SkPdfStream* stream);
+    SkPdfToUnicode(SkPdfNativeDoc* parsed, SkPdfStream* stream);
 };
 
 
 class SkPdfIdentityHEncoding : public SkPdfEncoding {
 public:
     virtual bool decodeText(const SkUnencodedText& textIn, SkDecodedText* textOut) const {
         // TODO(edisonn): SkASSERT(textIn.len % 2 == 0); or report error?
 
         uint16_t* text = (uint16_t*)textIn.text;
         textOut->text = new uint16_t[textIn.len / 2];
@@ skipping 66 matching lines @@
 
 public:
     SkPdfFont() : fBaseFont(NULL), fEncoding(SkPdfDefaultEncoding::instance()), fToUnicode(NULL) {}
 
     virtual ~SkPdfFont() {
         // TODO(edisonn): NYI (will leak for now)
     }
 
     const SkPdfEncoding* encoding() const {return fEncoding;}
 
-    void drawText(const SkDecodedText& text, SkPaint* paint, PdfContext* pdfContext, SkCanvas* canvas) {
+    void drawText(const SkDecodedText& text, SkPaint* paint, SkPdfContext* pdfContext, SkCanvas* canvas) {
         for (int i = 0 ; i < text.size(); i++) {
             canvas->setMatrix(pdfContext->fGraphicsState.fMatrixTm);
 #ifdef PDF_TRACE
             SkPoint point = SkPoint::Make(SkDoubleToScalar(0), SkDoubleToScalar(0));
             pdfContext->fGraphicsState.fMatrixTm.mapPoints(&point, 1);
             printf("DrawText at (%f, %f)\n", SkScalarToDouble(point.x()), SkScalarToDouble(point.y()));
 #endif  // PDF_TRACE
+
+#ifdef PDF_TRACE_DRAWTEXT
+            SkPaint col;
+            col.setColor(SK_ColorMAGENTA);
+            SkRect rect = SkRect::MakeXYWH(SkDoubleToScalar(0.0), SkDoubleToScalar(0.0), SkDoubleToScalar(10.0), SkDoubleToScalar(10.0));
+            canvas->save();
+            canvas->setMatrix(pdfContext->fGraphicsState.fMatrixTm);
+            canvas->drawRect(rect, col);
+            canvas->restore();
+#endif
             double width = drawOneChar(text[i], paint, pdfContext, canvas);
             pdfContext->fGraphicsState.fMatrixTm.preTranslate(SkDoubleToScalar(width), SkDoubleToScalar(0.0));
         }
     }
 
     void ToUnicode(const SkDecodedText& textIn, SkUnicodeText* textOut) const {
         if (fToUnicode) {
             textOut->text = new uint16_t[textIn.len];
             textOut->len = textIn.len;
             for (int i = 0; i < textIn.len; i++) {
                 textOut->text[i] = fToUnicode->fCMapEncoding[textIn.text[i]];
             }
         } else {
             textOut->text = textIn.text;
             textOut->len = textIn.len;
         }
     };
 
     inline unsigned int ToUnicode(unsigned int ch) const {
         if (fToUnicode) {
             return fToUnicode->fCMapEncoding[ch];
         } else {
             return ch;
         }
     };
 
-    static SkPdfFont* fontFromPdfDictionary(SkNativeParsedPDF* doc, SkPdfFontDictionary* dict);
+    static SkPdfFont* fontFromPdfDictionary(SkPdfNativeDoc* doc, SkPdfFontDictionary* dict);
     static SkPdfFont* Default() {return fontFromName(NULL, NULL, "TimesNewRoman");}
 
-    static SkPdfType0Font* fontFromType0FontDictionary(SkNativeParsedPDF* doc, SkPdfType0FontDictionary* dict);
-    static SkPdfType1Font* fontFromType1FontDictionary(SkNativeParsedPDF* doc, SkPdfType1FontDictionary* dict);
-    static SkPdfType3Font* fontFromType3FontDictionary(SkNativeParsedPDF* doc, SkPdfType3FontDictionary* dict);
-    static SkPdfTrueTypeFont* fontFromTrueTypeFontDictionary(SkNativeParsedPDF* doc, SkPdfTrueTypeFontDictionary* dict);
-    static SkPdfMultiMasterFont* fontFromMultiMasterFontDictionary(SkNativeParsedPDF* doc, SkPdfMultiMasterFontDictionary* dict);
+    static SkPdfType0Font* fontFromType0FontDictionary(SkPdfNativeDoc* doc, SkPdfType0FontDictionary* dict);
+    static SkPdfType1Font* fontFromType1FontDictionary(SkPdfNativeDoc* doc, SkPdfType1FontDictionary* dict);
+    static SkPdfType3Font* fontFromType3FontDictionary(SkPdfNativeDoc* doc, SkPdfType3FontDictionary* dict);
+    static SkPdfTrueTypeFont* fontFromTrueTypeFontDictionary(SkPdfNativeDoc* doc, SkPdfTrueTypeFontDictionary* dict);
+    static SkPdfMultiMasterFont* fontFromMultiMasterFontDictionary(SkPdfNativeDoc* doc, SkPdfMultiMasterFontDictionary* dict);
 
-    static SkPdfFont* fontFromFontDescriptor(SkNativeParsedPDF* doc, SkPdfFontDescriptorDictionary* fd, bool loadFromName = true);
+    static SkPdfFont* fontFromFontDescriptor(SkPdfNativeDoc* doc, SkPdfFontDescriptorDictionary* fd, bool loadFromName = true);
 
 public:
-    virtual double drawOneChar(unsigned int ch, SkPaint* paint, PdfContext* pdfContext, SkCanvas* canvas) = 0;
+    virtual double drawOneChar(unsigned int ch, SkPaint* paint, SkPdfContext* pdfContext, SkCanvas* canvas) = 0;
     virtual void afterWord(SkPaint* paint, SkMatrix* matrix) = 0;
 
 private:
-    static SkPdfFont* fontFromPdfDictionaryOnce(SkNativeParsedPDF* doc, SkPdfFontDictionary* dict);
+    static SkPdfFont* fontFromPdfDictionaryOnce(SkPdfNativeDoc* doc, SkPdfFontDictionary* dict);
 };
 
 class SkPdfStandardFont : public SkPdfFont {
     SkTypeface* fTypeface;
 
 public:
     SkPdfStandardFont(SkTypeface* typeface) : fTypeface(typeface) {}
 
 public:
-    virtual double drawOneChar(unsigned int ch, SkPaint* paint, PdfContext* pdfContext, SkCanvas* canvas) {
+    virtual double drawOneChar(unsigned int ch, SkPaint* paint, SkPdfContext* pdfContext, SkCanvas* canvas) {
         paint->setTypeface(fTypeface);
         paint->setTextEncoding(SkPaint::kUTF8_TextEncoding);
 
         unsigned long ch4 = ch;
         char utf8[10];
         int len = SkUTF8_FromUnichar(ch4, utf8);
 
         canvas->drawText(utf8, len, SkDoubleToScalar(0), SkDoubleToScalar(0), *paint);
 
         SkScalar textWidth = paint->measureText(utf8, len);
         return SkScalarToDouble(textWidth);
     }
 
     virtual void afterWord(SkPaint* paint, SkMatrix* matrix) {}
 };
 
 class SkPdfType0Font : public SkPdfFont {
 public:
-    SkPdfType0Font(SkNativeParsedPDF* doc, SkPdfType0FontDictionary* dict);
+    SkPdfType0Font(SkPdfNativeDoc* doc, SkPdfType0FontDictionary* dict);
 
 public:
 
-    virtual double drawOneChar(unsigned int ch, SkPaint* paint, PdfContext* pdfContext, SkCanvas* canvas) {
+    virtual double drawOneChar(unsigned int ch, SkPaint* paint, SkPdfContext* pdfContext, SkCanvas* canvas) {
         return fBaseFont->drawOneChar(ToUnicode(ch), paint, pdfContext, canvas);
     }
 
     virtual void afterWord(SkPaint* paint, SkMatrix* matrix) {
     }
 };
 
 class SkPdfType1Font : public SkPdfFont {
 public:
-    SkPdfType1Font(SkNativeParsedPDF* doc, SkPdfType1FontDictionary* dict) {
+    SkPdfType1Font(SkPdfNativeDoc* doc, SkPdfType1FontDictionary* dict) {
         if (dict->has_FontDescriptor()) {
             fBaseFont = SkPdfFont::fontFromFontDescriptor(doc, dict->FontDescriptor(doc));
         } else {
             fBaseFont = fontFromName(doc, dict, dict->BaseFont(doc).c_str());
         }
+
+        if (dict->isEncodingAName(doc)) {
+            fEncoding = SkPdfEncoding::fromName(dict->getEncodingAsName(doc).c_str());
+        } else if (dict->isEncodingADictionary(doc)) {
+            //SkPdfDictionary* dictEnc = dict->getEncodingAsDictionary(doc);
+        }
+        dict->FontDescriptor(doc);
     }
 
 public:
-      virtual double drawOneChar(unsigned int ch, SkPaint* paint, PdfContext* pdfContext, SkCanvas* canvas) {
+      virtual double drawOneChar(unsigned int ch, SkPaint* paint, SkPdfContext* pdfContext, SkCanvas* canvas) {
           return fBaseFont->drawOneChar(ToUnicode(ch), paint, pdfContext, canvas);
       }
 
       virtual void afterWord(SkPaint* paint, SkMatrix* matrix) {
 
       }
 };
 
 class SkPdfTrueTypeFont : public SkPdfType1Font {
 public:
-    SkPdfTrueTypeFont(SkNativeParsedPDF* doc, SkPdfTrueTypeFontDictionary* dict) : SkPdfType1Font(doc, dict) {
+    SkPdfTrueTypeFont(SkPdfNativeDoc* doc, SkPdfTrueTypeFontDictionary* dict) : SkPdfType1Font(doc, dict) {
     }
 };
 
 class SkPdfMultiMasterFont : public SkPdfType1Font {
 public:
-    SkPdfMultiMasterFont(SkNativeParsedPDF* doc, SkPdfMultiMasterFontDictionary* dict) : SkPdfType1Font(doc, dict) {
+    SkPdfMultiMasterFont(SkPdfNativeDoc* doc, SkPdfMultiMasterFontDictionary* dict) : SkPdfType1Font(doc, dict) {
     }
 };
 /*
 class CIDToGIDMap {
     virtual unsigned int map(unsigned int cid) = 0;
     static CIDToGIDMap* fromName(const char* name);
 };
 
 class CIDToGIDMap_Identity {
     virtual unsigned int map(unsigned int cid) { return cid; }
@@ skipping 14 matching lines @@
     // TODO(edisonn): warning/report
     printf("Unknown CIDToGIDMap: %s\n", name);
 #endif
     return NULL;
 }
 CIDToGIDMap* fCidToGid;
 */
 
 class SkPdfType3Font : public SkPdfFont {
     struct Type3FontChar {
-        SkPdfObject* fObj;
+        SkPdfNativeObject* fObj;
         double fWidth;
     };
 
     SkPdfDictionary* fCharProcs;
     SkPdfEncodingDictionary* fEncodingDict;
     unsigned int fFirstChar;
     unsigned int fLastChar;
 
     SkRect fFontBBox;
     SkMatrix fFonMatrix;
 
     Type3FontChar* fChars;
 
 public:
-    SkPdfType3Font(SkNativeParsedPDF* parsed, SkPdfType3FontDictionary* dict) {
+    SkPdfType3Font(SkPdfNativeDoc* parsed, SkPdfType3FontDictionary* dict) {
         fBaseFont = fontFromName(parsed, dict, dict->BaseFont(parsed).c_str());
 
         if (dict->has_Encoding()) {
             if (dict->isEncodingAName(parsed)) {
                  fEncoding = SkPdfEncoding::fromName(dict->getEncodingAsName(parsed).c_str());
             } else if (dict->isEncodingAEncodingdictionary(parsed)) {
                  // No encoding.
                  fEncoding = SkPdfDefaultEncoding::instance();
                  fEncodingDict = dict->getEncodingAsEncodingdictionary(parsed);
             }
@@ skipping 40 matching lines @@
                     // TODO(edisonn): report pdf corruption
                 }
                 j++;
             } else {
                 // TODO(edisonn): report bad pdf
             }
         }
     }
 
 public:
-    virtual double drawOneChar(unsigned int ch, SkPaint* paint, PdfContext* pdfContext, SkCanvas* canvas) {
+    virtual double drawOneChar(unsigned int ch, SkPaint* paint, SkPdfContext* pdfContext, SkCanvas* canvas) {
         if (ch < fFirstChar || ch > fLastChar || !fChars[ch - fFirstChar].fObj) {
             return fBaseFont->drawOneChar(ToUnicode(ch), paint, pdfContext, canvas);
         }
 
 #ifdef PDF_TRACE
         printf("Type 3 char to unicode: %c\n", ToUnicode(ch));
         if (ToUnicode(ch) == 'A') {
             printf("break;\n");
         }
 #endif
 
         // TODO(edisonn): is it better to resolve the reference at load time, or now?
         doType3Char(pdfContext, canvas, pdfContext->fPdfDoc->resolveReference(fChars[ch - fFirstChar].fObj), fFontBBox, fFonMatrix, pdfContext->fGraphicsState.fCurFontSize);
 
         // TODO(edisonn): verify/test translate code, not tested yet
         pdfContext->fGraphicsState.fMatrixTm.preTranslate(SkDoubleToScalar(pdfContext->fGraphicsState.fCurFontSize * fChars[ch - fFirstChar].fWidth),
                              SkDoubleToScalar(0.0));
         return fChars[ch - fFirstChar].fWidth;
     }
 
     virtual void afterWord(SkPaint* paint, SkMatrix* matrix) {
 
     }
 };
 
 #endif  // __DEFINED__SkPdfFont