chromium/chrome/browser/icon_transcoder/svg_icon_transcoder.cc

// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "chrome/browser/icon_transcoder/svg_icon_transcoder.h"

#include "base/base64.h"
#include "base/files/file_util.h"
#include "base/task/thread_pool.h"
#include "content/public/browser/browser_context.h"
#include "content/public/browser/web_contents.h"
#include "third_party/skia/include/core/SkBitmap.h"
#include "ui/gfx/codec/png_codec.h"

namespace apps {

namespace {

constexpr char kSvgDataUrlPrefix[] = …;

std::string ReadSvgOnFileThread(base::FilePath svg_path) { … }

void SaveIconOnFileThread(const base::FilePath& icon_path,
                          const std::string& content) { … }

}  // namespace

SvgIconTranscoder::SvgIconTranscoder(content::BrowserContext* context)
    : … { … }

SvgIconTranscoder::~SvgIconTranscoder() { … }

// Reads the svg data at svg_path and invokes the string Transcode method.
// |callback| is invoked with and empty string on failure. Blocking call.
void SvgIconTranscoder::Transcode(const base::FilePath&& svg_path,
                                  const base::FilePath&& png_path,
                                  gfx::Size preferred_size,
                                  IconContentCallback callback) { … }

// Validates and trims the svg_data before base64 encoding and dispatching to
// |web_contents_| in a data: URI.  |callback| is invoked with and empty
// string on failure. Blocking call.
void SvgIconTranscoder::Transcode(const std::string& svg_data,
                                  const base::FilePath&& png_path,
                                  gfx::Size preferred_size,
                                  IconContentCallback callback) { … }

void SvgIconTranscoder::MaybeCreateWebContents() { … }

bool SvgIconTranscoder::PrepareWebContents() { … }

void SvgIconTranscoder::RenderProcessReady(content::RenderProcessHost* host) { … }

void SvgIconTranscoder::RenderProcessExited(
    content::RenderProcessHost* host,
    const content::ChildProcessTerminationInfo& info) { … }

void SvgIconTranscoder::RemoveObserver() { … }

// Compresses the first received bitmap and  saves compressed data to
// |png_path| if non-empty. If the file can't be saved, that's not considered
// and error. Next time lucky.
void SvgIconTranscoder::OnDownloadImage(base::FilePath png_path,
                                        IconContentCallback callback,
                                        int id,
                                        int http_status_code,
                                        const GURL& image_url,
                                        const std::vector<SkBitmap>& bitmaps,
                                        const std::vector<gfx::Size>& sizes) { … }

}  // namespace apps