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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/snapshot/snapshot.h"
#include <utility>
#include "base/functional/bind.h"
#include "base/functional/callback.h"
#include "base/task/thread_pool.h"
#include "third_party/skia/include/core/SkBitmap.h"
#include "ui/gfx/codec/png_codec.h"
#include "ui/gfx/image/image.h"
#include "ui/gfx/image/image_skia.h"
#include "ui/gfx/image/image_skia_rep.h"
#include "ui/gfx/image/image_util.h"
namespace ui {
namespace {
scoped_refptr<base::RefCountedMemory> EncodeImageAsPNG(
const gfx::Image& image) {
if (image.IsEmpty()) {
return nullptr;
}
DCHECK(!image.AsImageSkia().GetRepresentation(1.0f).is_null());
return image.As1xPNGBytes();
}
scoped_refptr<base::RefCountedMemory> EncodeImageAsJPEG(
const gfx::Image& image) {
if (image.IsEmpty()) {
return nullptr;
}
DCHECK(!image.AsImageSkia().GetRepresentation(1.0f).is_null());
std::optional<std::vector<uint8_t>> result =
gfx::JPEG1xEncodedDataFromImage(image, /*quality=*/100);
if (!result.has_value()) {
return nullptr;
}
return base::MakeRefCounted<base::RefCountedBytes>(std::move(result).value());
}
void EncodeImageAndScheduleCallback(
scoped_refptr<base::RefCountedMemory> (*encode_func)(const gfx::Image&),
base::OnceCallback<void(scoped_refptr<base::RefCountedMemory> data)>
callback,
gfx::Image image) {
base::ThreadPool::PostTaskAndReplyWithResult(
FROM_HERE, {base::TaskShutdownBehavior::CONTINUE_ON_SHUTDOWN},
base::BindOnce(encode_func, std::move(image)), std::move(callback));
}
} // namespace
#if BUILDFLAG(IS_APPLE) || BUILDFLAG(IS_WIN)
// Note that Android and Aura versions of this function are in
// snapshot_android.cc and snapshot_aura.cc respectively.
void GrabWindowSnapshotAndScale(gfx::NativeWindow window,
const gfx::Rect& source_rect,
const gfx::Size& target_size,
GrabSnapshotImageCallback callback) {
auto resize_image = [](const gfx::Size& target_size,
GrabSnapshotImageCallback callback, gfx::Image image) {
if (image.IsEmpty()) {
std::move(callback).Run(image);
}
base::ThreadPool::PostTaskAndReplyWithResult(
FROM_HERE, {base::TaskShutdownBehavior::CONTINUE_ON_SHUTDOWN},
base::BindOnce(gfx::ResizedImage, std::move(image), target_size),
std::move(callback));
};
GrabWindowSnapshot(
window, source_rect,
base::BindOnce(resize_image, target_size, std::move(callback)));
}
#endif // BUILDFLAG(IS_APPLE) || BUILDFLAG(IS_WIN)
void GrabWindowSnapshotAsPNG(gfx::NativeWindow window,
const gfx::Rect& source_rect,
GrabSnapshotDataCallback callback) {
GrabWindowSnapshot(window, source_rect,
base::BindOnce(&EncodeImageAndScheduleCallback,
&EncodeImageAsPNG, std::move(callback)));
}
void GrabWindowSnapshotAsJPEG(gfx::NativeWindow window,
const gfx::Rect& source_rect,
GrabSnapshotDataCallback callback) {
GrabWindowSnapshot(window, source_rect,
base::BindOnce(&EncodeImageAndScheduleCallback,
&EncodeImageAsJPEG, std::move(callback)));
}
} // namespace ui
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