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// Copyright (c) 2012 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 "chrome/browser/ui/webui/web_ui_util.h"
#include <vector>
#include "base/base64.h"
#include "base/logging.h"
#include "base/memory/ref_counted_memory.h"
#include "base/values.h"
#include "chrome/browser/disposition_utils.h"
#include "googleurl/src/gurl.h"
#include "net/base/escape.h"
#include "ui/base/resource/resource_bundle.h"
#include "ui/gfx/codec/png_codec.h"
#include "ui/gfx/image/image_skia.h"
namespace {
struct ScaleFactorMap {
const char* name;
ui::ScaleFactor scale_factor;
};
const ScaleFactorMap kScaleFactorMap[] = {
{ "1x", ui::SCALE_FACTOR_100P },
{ "2x", ui::SCALE_FACTOR_200P },
};
} // namespace
namespace web_ui_util {
std::string GetImageDataUrl(const gfx::ImageSkia& image) {
std::vector<unsigned char> output;
gfx::PNGCodec::EncodeBGRASkBitmap(*image.bitmap(), false, &output);
std::string str_url;
str_url.insert(str_url.end(), output.begin(), output.end());
base::Base64Encode(str_url, &str_url);
str_url.insert(0, "data:image/png;base64,");
return str_url;
}
std::string GetImageDataUrlFromResource(int res) {
// Load resource icon and covert to base64 encoded data url
base::RefCountedStaticMemory* icon_data =
ResourceBundle::GetSharedInstance().LoadDataResourceBytes(res,
ui::SCALE_FACTOR_100P);
if (!icon_data)
return std::string();
scoped_refptr<base::RefCountedMemory> raw_icon(icon_data);
std::string str_url;
str_url.insert(str_url.end(),
raw_icon->front(),
raw_icon->front() + raw_icon->size());
base::Base64Encode(str_url, &str_url);
str_url.insert(0, "data:image/png;base64,");
return str_url;
}
WindowOpenDisposition GetDispositionFromClick(const ListValue* args,
int start_index) {
double button = 0.0;
bool alt_key = false;
bool ctrl_key = false;
bool meta_key = false;
bool shift_key = false;
CHECK(args->GetDouble(start_index++, &button));
CHECK(args->GetBoolean(start_index++, &alt_key));
CHECK(args->GetBoolean(start_index++, &ctrl_key));
CHECK(args->GetBoolean(start_index++, &meta_key));
CHECK(args->GetBoolean(start_index++, &shift_key));
return disposition_utils::DispositionFromClick(button == 1.0, alt_key,
ctrl_key, meta_key, shift_key);
}
bool ParseScaleFactor(const base::StringPiece& identifier,
ui::ScaleFactor* scale_factor) {
*scale_factor = ui::SCALE_FACTOR_NONE;
for (size_t i = 0; i < arraysize(kScaleFactorMap); i++) {
if (identifier == kScaleFactorMap[i].name) {
*scale_factor = kScaleFactorMap[i].scale_factor;
return true;
}
}
return false;
}
void ParsePathAndScale(const GURL& url,
std::string* path,
ui::ScaleFactor* scale_factor) {
*path = net::UnescapeURLComponent(url.path().substr(1),
(net::UnescapeRule::URL_SPECIAL_CHARS |
net::UnescapeRule::SPACES));
if (scale_factor)
*scale_factor = ui::SCALE_FACTOR_100P;
// Detect and parse resource string ending in @<scale>x.
std::size_t pos = path->rfind('@');
if (pos != std::string::npos) {
base::StringPiece stripped_path(*path);
ui::ScaleFactor factor;
if (ParseScaleFactor(stripped_path.substr(
pos + 1, stripped_path.length() - pos - 1), &factor)) {
// Strip scale factor specification from path.
stripped_path.remove_suffix(stripped_path.length() - pos);
stripped_path.CopyToString(path);
}
if (scale_factor)
*scale_factor = factor;
}
}
} // namespace web_ui_util
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