1 files changed, 117 insertions, 0 deletions
diff --git a/printing/pdf_metafile_mac.cc b/printing/pdf_metafile_mac.cc
new file mode 100644
index 0000000..6a8cd55
--- /dev/null
+++ b/printing/pdf_metafile_mac.cc
@@ -0,0 +1,117 @@
+// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "printing/pdf_metafile_mac.h"
+
+#include "base/logging.h"
+
+namespace printing {
+
+PdfMetafile::PdfMetafile()
+    : page_is_open_(false) {
+}
+
+CGContextRef PdfMetafile::Init() {
+  // Ensure that Init hasn't already been called.
+  DCHECK(!context_.get());
+  DCHECK(!pdf_data_.get());
+
+  pdf_data_.reset(CFDataCreateMutable(kCFAllocatorDefault, 0));
+  if (!pdf_data_.get()) {
+    LOG(ERROR) << "Failed to create pdf data for metafile";
+    return NULL;
+  }
+  scoped_cftyperef<CGDataConsumerRef> pdf_consumer(
+      CGDataConsumerCreateWithCFData(pdf_data_));
+  if (!pdf_consumer.get()) {
+    LOG(ERROR) << "Failed to create data consumer for metafile";
+    pdf_data_.reset(NULL);
+    return NULL;
+  }
+  context_.reset(CGPDFContextCreate(pdf_consumer, NULL, NULL));
+  if (!context_.get()) {
+    LOG(ERROR) << "Failed to create pdf context for metafile";
+    pdf_data_.reset(NULL);
+  }
+
+  return context_.get();
+}
+
+bool PdfMetafile::Init(const void* src_buffer, size_t src_buffer_size) {
+  DCHECK(!context_.get());
+  DCHECK(!pdf_data_.get());
+
+  if (!src_buffer || src_buffer_size == 0) {
+    return false;
+  }
+
+  pdf_data_.reset(CFDataCreateMutable(kCFAllocatorDefault, src_buffer_size));
+  CFDataAppendBytes(pdf_data_, static_cast<const UInt8*>(src_buffer),
+                    src_buffer_size);
+
+  return true;
+}
+
+bool PdfMetafile::CreateFromData(const void* src_buffer,
+                                 size_t src_buffer_size) {
+  return Init(src_buffer, src_buffer_size);
+}
+
+void PdfMetafile::StartPage(double width, double height, double scale_factor) {
+  DCHECK(context_.get());
+  DCHECK(!page_is_open_);
+
+  CGRect bounds = CGRectMake(0, 0, width, height);
+  CGContextBeginPage(context_, &bounds);
+  page_is_open_ = true;
+  CGContextSaveGState(context_);
+
+  // Flip the context.
+  CGContextTranslateCTM(context_, 0, height);
+  CGContextScaleCTM(context_, scale_factor, -scale_factor);
+}
+
+void PdfMetafile::FinishPage() {
+  DCHECK(context_.get());
+  DCHECK(page_is_open_);
+
+  CGContextRestoreGState(context_);
+  CGContextEndPage(context_);
+  page_is_open_ = false;
+}
+
+void PdfMetafile::Close() {
+  DCHECK(context_.get());
+  DCHECK(!page_is_open_);
+
+  context_.reset(NULL);
+}
+
+unsigned int PdfMetafile::GetDataSize() const {
+  // PDF data is only valid/complete once the context is released.
+  DCHECK(!context_);
+
+  if (!pdf_data_)
+    return 0;
+  return static_cast<unsigned int>(CFDataGetLength(pdf_data_));
+}
+
+bool PdfMetafile::GetData(void* dst_buffer, size_t dst_buffer_size) const {
+  // PDF data is only valid/complete once the context is released.
+  DCHECK(!context_);
+  DCHECK(pdf_data_);
+  DCHECK(dst_buffer);
+  DCHECK_GT(dst_buffer_size, 0U);
+
+  size_t data_size = GetDataSize();
+  if (dst_buffer_size > data_size) {
+    return false;
+  }
+
+  CFDataGetBytes(pdf_data_, CFRangeMake(0, dst_buffer_size),
+                 static_cast<UInt8*>(dst_buffer));
+  return true;
+}
+
+}  // namespace printing