| // Copyright 2013 The Flutter 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 "flutter/lib/ui/painting/image.h" |
| |
| #include <algorithm> |
| #include <limits> |
| |
| #include "flutter/lib/ui/painting/image_encoding.h" |
| #include "third_party/tonic/converter/dart_converter.h" |
| #include "third_party/tonic/dart_args.h" |
| #include "third_party/tonic/dart_binding_macros.h" |
| #include "third_party/tonic/dart_library_natives.h" |
| |
| namespace flutter { |
| |
| typedef CanvasImage Image; |
| |
| // Since _Image is a private class, we can't use IMPLEMENT_WRAPPERTYPEINFO |
| static const tonic::DartWrapperInfo kDartWrapperInfo_ui_Image = { |
| "ui", |
| "_Image", |
| sizeof(Image), |
| }; |
| const tonic::DartWrapperInfo& Image::dart_wrapper_info_ = |
| kDartWrapperInfo_ui_Image; |
| |
| CanvasImage::CanvasImage() = default; |
| |
| CanvasImage::~CanvasImage() = default; |
| |
| Dart_Handle CanvasImage::toByteData(int format, Dart_Handle callback) { |
| return EncodeImage(this, format, callback); |
| } |
| |
| void CanvasImage::dispose() { |
| image_.reset(); |
| ClearDartWrapper(); |
| } |
| |
| size_t CanvasImage::GetAllocationSize() const { |
| auto size = sizeof(this); |
| if (image_) { |
| size += image_->GetApproximateByteSize(); |
| } |
| // The VM will assert if we set a value larger than or close to |
| // std::numeric_limits<intptr_t>::max(). |
| // https://github.com/dart-lang/sdk/issues/49332 |
| return std::clamp( |
| size, static_cast<size_t>(0), |
| static_cast<size_t>(std::numeric_limits<intptr_t>::max() / 10)); |
| } |
| } // namespace flutter |