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#include <mbgl/map/resource_loader.hpp>
#include <mbgl/geometry/sprite_atlas.hpp>
#include <mbgl/map/environment.hpp>
#include <mbgl/map/source.hpp>
#include <mbgl/map/sprite.hpp>
#include <mbgl/map/transform.hpp>
#include <mbgl/style/style.hpp>
#include <cassert>
namespace mbgl {
ResourceLoader::ResourceLoader() {
assert(Environment::currentlyOn(ThreadType::Map));
}
ResourceLoader::~ResourceLoader() {
assert(Environment::currentlyOn(ThreadType::Map));
for (const auto& source : style_->sources) {
source->setObserver(nullptr);
}
if (sprite_) {
sprite_->setObserver(nullptr);
}
if (glyphStore_) {
glyphStore_->setObserver(nullptr);
}
}
void ResourceLoader::setObserver(Observer* observer) {
assert(Environment::currentlyOn(ThreadType::Map));
assert(!observer_);
observer_ = observer;
}
void ResourceLoader::setStyle(Style* style) {
assert(style);
style_ = style;
for (const auto& source : style->sources) {
source->setObserver(this);
source->load(accessToken_);
}
}
void ResourceLoader::setGlyphStore(GlyphStore* glyphStore) {
assert(glyphStore);
if (glyphStore_) {
glyphStore_->setObserver(nullptr);
}
glyphStore_ = glyphStore;
glyphStore_->setObserver(this);
}
void ResourceLoader::setAccessToken(const std::string& accessToken) {
accessToken_ = accessToken;
}
void ResourceLoader::update(MapData& data,
const TransformState& transform,
GlyphAtlas& glyphAtlas,
SpriteAtlas& spriteAtlas,
TexturePool& texturePool) {
if (!style_) {
return;
}
const float pixelRatio = transform.getPixelRatio();
if (!sprite_ || !sprite_->hasPixelRatio(pixelRatio)) {
sprite_ = util::make_unique<Sprite>(style_->getSpriteURL(), pixelRatio);
sprite_->setObserver(this);
spriteAtlas.resize(pixelRatio);
spriteAtlas.setSprite(sprite_);
}
bool allTilesUpdated = true;
for (const auto& source : style_->sources) {
if (!source->update(data, transform, *style_, glyphAtlas, *glyphStore_,
spriteAtlas, sprite_, texturePool, shouldReparsePartialTiles_)) {
allTilesUpdated = false;
}
}
// We can only stop updating "partial" tiles when all of them
// were notified of the arrival of the new resources.
if (allTilesUpdated) {
shouldReparsePartialTiles_ = false;
}
}
void ResourceLoader::onGlyphRangeLoaded() {
shouldReparsePartialTiles_ = true;
emitTileDataChanged();
}
void ResourceLoader::onSourceLoaded() {
emitTileDataChanged();
}
void ResourceLoader::onTileLoaded(bool isNewTile) {
if (isNewTile) {
shouldReparsePartialTiles_ = true;
}
emitTileDataChanged();
}
void ResourceLoader::onSpriteLoaded() {
shouldReparsePartialTiles_ = true;
emitTileDataChanged();
}
void ResourceLoader::emitTileDataChanged() {
assert(Environment::currentlyOn(ThreadType::Map));
if (observer_) {
observer_->onTileDataChanged();
}
}
}
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