Add native_mate converters for ImageSkia.

atom/common/native_mate_converters/image_converter.cc

@@ -0,0 +1,43 @@
+// Copyright (c) 2014 GitHub, Inc. All rights reserved.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#include "atom/common/native_mate_converters/image_converter.h"
+
+#include "atom/common/native_mate_converters/file_path_converter.h"
+#include "base/file_util.h"
+#include "ui/gfx/codec/jpeg_codec.h"
+#include "ui/gfx/codec/png_codec.h"
+#include "ui/gfx/image/image_skia.h"
+
+namespace mate {
+
+bool Converter<gfx::ImageSkia>::FromV8(v8::Isolate* isolate,
+                                       v8::Handle<v8::Value> val,
+                                       gfx::ImageSkia* out) {
+  base::FilePath path;
+  if (Converter<base::FilePath>::FromV8(isolate, val, &path)) {
+    std::string file_contents;
+    if (!base::ReadFileToString(path, &file_contents))
+      return false;
+
+    const unsigned char* data =
+        reinterpret_cast<const unsigned char*>(file_contents.data());
+    size_t size = file_contents.size();
+    scoped_ptr<SkBitmap> decoded(new SkBitmap());
+
+    // Try PNG first.
+    if (!gfx::PNGCodec::Decode(data, size, decoded.get()))
+      // Try JPEG.
+      decoded.reset(gfx::JPEGCodec::Decode(data, size));
+
+    if (decoded) {
+      *out = gfx::ImageSkia::CreateFrom1xBitmap(*decoded.release());
+      return true;
+    }
+  }
+
+  return false;
+}
+
+}  // namespace mate

atom/common/native_mate_converters/image_converter.h

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+// Copyright (c) 2014 GitHub, Inc. All rights reserved.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#ifndef ATOM_COMMON_NATIVE_MATE_CONVERTERS_IMAGE_CONVERTER_H_
+#define ATOM_COMMON_NATIVE_MATE_CONVERTERS_IMAGE_CONVERTER_H_
+
+#include "native_mate/converter.h"
+
+namespace gfx {
+class ImageSkia;
+}
+
+namespace mate {
+
+template<>
+struct Converter<gfx::ImageSkia> {
+  static bool FromV8(v8::Isolate* isolate,
+                     v8::Handle<v8::Value> val,
+                     gfx::ImageSkia* out);
+};
+
+}  // namespace mate
+
+#endif  // ATOM_COMMON_NATIVE_MATE_CONVERTERS_IMAGE_CONVERTER_H_