impeller/aiks/aiks_context.cc

// 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 "impeller/aiks/aiks_context.h"

#include "fml/closure.h"
#include "impeller/aiks/picture.h"
#include "impeller/typographer/typographer_context.h"

namespace impeller {

AiksContext::AiksContext(
    std::shared_ptr<Context> context,
    std::shared_ptr<TypographerContext> typographer_context,
    std::optional<std::shared_ptr<RenderTargetAllocator>>
        render_target_allocator)
    : context_(std::move(context)) {
  if (!context_ || !context_->IsValid()) {
    return;
  }

  content_context_ = std::make_unique<ContentContext>(
      context_, std::move(typographer_context),
      render_target_allocator.has_value() ? render_target_allocator.value()
                                          : nullptr);
  if (!content_context_->IsValid()) {
    return;
  }

  is_valid_ = true;
}

AiksContext::~AiksContext() = default;

bool AiksContext::IsValid() const {
  return is_valid_;
}

std::shared_ptr<Context> AiksContext::GetContext() const {
  return context_;
}

ContentContext& AiksContext::GetContentContext() const {
  return *content_context_;
}

bool AiksContext::Render(const Picture& picture,
                         RenderTarget& render_target,
                         bool reset_host_buffer) {
  if (!IsValid()) {
    return false;
  }

  fml::ScopedCleanupClosure closure([&]() {
    if (reset_host_buffer) {
      content_context_->GetTransientsBuffer().Reset();
    }
  });
  if (picture.pass) {
    return picture.pass->Render(*content_context_, render_target);
  }

  return true;
}

}  // namespace impeller