blob: 74d76c909f823e83e34f9f70dd365eff883e37bd [file] [log] [blame] [edit]
// 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/common/graphics/texture.h"
namespace flutter {
ContextListener::ContextListener() = default;
ContextListener::~ContextListener() = default;
Texture::Texture(int64_t id) : id_(id) {}
Texture::~Texture() = default;
TextureRegistry::TextureRegistry() = default;
void TextureRegistry::RegisterTexture(const std::shared_ptr<Texture>& texture) {
if (!texture) {
return;
}
mapping_[texture->Id()] = texture;
}
void TextureRegistry::RegisterContextListener(
uintptr_t id,
std::weak_ptr<ContextListener> image) {
size_t next_id = image_counter_++;
auto const result = image_indices_.insert({id, next_id});
if (!result.second) {
ordered_images_.erase(result.first->second);
result.first->second = next_id;
}
ordered_images_[next_id] = {next_id, std::move(image)};
}
void TextureRegistry::UnregisterTexture(int64_t id) {
auto found = mapping_.find(id);
if (found == mapping_.end()) {
return;
}
found->second->OnTextureUnregistered();
mapping_.erase(found);
}
void TextureRegistry::UnregisterContextListener(uintptr_t id) {
ordered_images_.erase(image_indices_[id]);
image_indices_.erase(id);
}
void TextureRegistry::OnGrContextCreated() {
for (auto& it : mapping_) {
it.second->OnGrContextCreated();
}
// Calling OnGrContextCreated may result in a subsequent call to
// RegisterContextListener from the listener, which may modify the map.
std::vector<InsertionOrderMap::value_type> ordered_images(
ordered_images_.begin(), ordered_images_.end());
for (const auto& [id, pair] : ordered_images) {
auto index_id = pair.first;
auto weak_image = pair.second;
if (auto image = weak_image.lock()) {
image->OnGrContextCreated();
} else {
image_indices_.erase(index_id);
ordered_images_.erase(id);
}
}
}
void TextureRegistry::OnGrContextDestroyed() {
for (auto& it : mapping_) {
it.second->OnGrContextDestroyed();
}
auto it = ordered_images_.begin();
while (it != ordered_images_.end()) {
auto index_id = it->second.first;
auto weak_image = it->second.second;
if (auto image = weak_image.lock()) {
image->OnGrContextDestroyed();
it++;
} else {
image_indices_.erase(index_id);
it = ordered_images_.erase(it);
}
}
}
std::shared_ptr<Texture> TextureRegistry::GetTexture(int64_t id) {
auto it = mapping_.find(id);
return it != mapping_.end() ? it->second : nullptr;
}
} // namespace flutter