1 files changed, 121 insertions, 0 deletions
diff --git a/chromium/third_party/skia/experimental/PdfViewer/SkPdfUtils.h b/chromium/third_party/skia/experimental/PdfViewer/SkPdfUtils.h
new file mode 100644
index 00000000000..87ed4597dc5
--- /dev/null
+++ b/chromium/third_party/skia/experimental/PdfViewer/SkPdfUtils.h
@@ -0,0 +1,121 @@
+/*
+ * Copyright 2013 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef SkPdfUtils_DEFINED
+#define SkPdfUtils_DEFINED
+
+#include "SkMatrix.h"
+#include "SkRect.h"
+#include "SkPdfConfig.h"
+#include "SkString.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
+};
+
+// In order to operate fast, when we parse the pdf, we try not to allocate many new strings,
+// and if possible we refer the string in the pdf stream.
+struct NotOwnedString {
+    const unsigned char* fBuffer;
+    // TODO(edisonn): clean up, the last two bytes are used to signal if compression is used
+    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 SkMatrixFromPdfMatrix(double array[6]);
+
+// TODO(edisonn): hack to make code generation simpler. Alternatively we can update the
+// generate_code.py not to rely on != operator
+bool operator !=(const SkString& first, const char* second);
+
+SkMatrix SkMatrixFromPdfArray(SkPdfArray* pdfArray);
+
+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
+
+#ifdef PDF_TRACE_TOKENIZER
+
+static void TRACE_COMMENT(char ch) {
+    printf("%c", ch);
+}
+
+static void TRACE_TK(char ch) {
+    printf("%c", ch);
+}
+
+static void TRACE_NAME(const unsigned char* start, const unsigned char* end) {
+    while (start < end) {
+        printf("%c", *start);
+        start++;
+    }
+    printf("\n");
+}
+
+static void TRACE_STRING(const unsigned char* start, const unsigned char* end) {
+    while (start < end) {
+        printf("%c", *start);
+        start++;
+    }
+    printf("\n");
+}
+
+static void TRACE_HEXSTRING(const unsigned char* start, const unsigned char* end) {
+    while (start < end) {
+        printf("%c", *start);
+        start++;
+    }
+    printf("\n");
+}
+
+#else
+#define TRACE_COMMENT(ch)
+#define TRACE_TK(ch)
+#define TRACE_NAME(start,end)
+#define TRACE_STRING(start,end)
+#define TRACE_HEXSTRING(start,end)
+#endif
+
+#endif   // SkPdfUtils_DEFINED