Linux download shelf icons first cut.

Nor do we have support for alternate file formats; nor do we have a default icon.

BUG=http://crbug.com/8631
Review URL: http://codereview.chromium.org/113571

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@16444 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 28 insertions, 1 deletions

diff --git a/chrome/browser/icon_loader_linux.cc b/chrome/browser/icon_loader_linux.cc
index 83a8305..26788d8 100644
--- a/chrome/browser/icon_loader_linux.cc
+++ b/chrome/browser/icon_loader_linux.cc
@@ -4,11 +4,38 @@
 
 #include "chrome/browser/icon_loader.h"
 
+#include "base/file_util.h"
+#include "base/gfx/png_decoder.h"
+#include "base/logging.h"
 #include "base/message_loop.h"
+#include "base/mime_util.h"
 #include "base/thread.h"
+#include "base/string_util.h"
+#include "third_party/skia/include/core/SkBitmap.h"
 
 void IconLoader::ReadIcon() {
-  NOTIMPLEMENTED();
+  size_t size = 48;
+  if (icon_size_ == NORMAL)
+    size = 32;
+  else if (icon_size_ == SMALL)
+    size = 16;
+
+  FilePath filename = mime_util::GetMimeIcon(group_, size);
+  if (LowerCaseEqualsASCII(mime_util::GetFileMimeType(filename), "image/png")) {
+    std::string file_contents;
+    file_util::ReadFileToString(filename, &file_contents);
+
+    std::vector<unsigned char> pixels;
+    int width, height;
+    if (PNGDecoder::Decode(
+        reinterpret_cast<const unsigned char*>(file_contents.c_str()),
+        file_contents.length(), PNGDecoder::FORMAT_BGRA,
+        &pixels, &width, &height)) {
+      bitmap_ = PNGDecoder::CreateSkBitmapFromBGRAFormat(pixels, width, height);
+    }
+  } else {
+    // TODO(estade): support other file types.
+  }
 
   target_message_loop_->PostTask(FROM_HERE,
       NewRunnableMethod(this, &IconLoader::NotifyDelegate));