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// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef EXTENSIONS_BROWSER_API_WEB_CONTENTS_CAPTURE_CLIENT_H_
#define EXTENSIONS_BROWSER_API_WEB_CONTENTS_CAPTURE_CLIENT_H_
#include <optional>
#include <string>
#include "extensions/browser/extension_function.h"
#include "extensions/common/api/extension_types.h"
class SkBitmap;
namespace content {
class WebContents;
}
namespace extensions {
// Base class for capturing visible area of a WebContents.
// This is used by both webview.captureVisibleRegion and tabs.captureVisibleTab.
class WebContentsCaptureClient {
public:
WebContentsCaptureClient() = default;
WebContentsCaptureClient(const WebContentsCaptureClient&) = delete;
WebContentsCaptureClient& operator=(const WebContentsCaptureClient&) = delete;
protected:
virtual ~WebContentsCaptureClient() {}
enum class ScreenshotAccess {
kEnabled,
kDisabledByPreferences,
kDisabledByDlp,
};
virtual ScreenshotAccess GetScreenshotAccess(
content::WebContents* web_contents) const = 0;
virtual bool ClientAllowsTransparency() = 0;
enum CaptureResult {
OK,
FAILURE_REASON_READBACK_FAILED,
FAILURE_REASON_ENCODING_FAILED,
FAILURE_REASON_SCREEN_SHOTS_DISABLED,
FAILURE_REASON_SCREEN_SHOTS_DISABLED_BY_DLP,
FAILURE_REASON_VIEW_INVISIBLE,
};
CaptureResult CaptureAsync(
content::WebContents* web_contents,
const api::extension_types::ImageDetails* image_detail,
base::OnceCallback<void(const SkBitmap&)> callback);
virtual void OnCaptureFailure(CaptureResult result) = 0;
virtual void OnCaptureSuccess(const SkBitmap& bitmap) = 0;
void CopyFromSurfaceComplete(const SkBitmap& bitmap);
// Encodes `bitmap`, and returns a base-64 encoded string if successful.
// Returns nullopt if not successful.
std::optional<std::string> EncodeBitmap(const SkBitmap& bitmap);
private:
// The format (JPEG vs PNG) of the resulting image. Set in RunAsync().
api::extension_types::ImageFormat image_format_;
// Quality setting to use when encoding jpegs. Set in RunAsync().
int image_quality_;
};
} // namespace extensions
#endif // EXTENSIONS_BROWSER_API_WEB_CONTENTS_CAPTURE_CLIENT_H_
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