void TileSourceImpl::load(FileSource& fileSource) {
if (urlOrTileset.is<Tileset>()) {
tileset = urlOrTileset.get<Tileset>();
loaded = true;
return;
}
if (req) {
return;
}
const std::string& url = urlOrTileset.get<std::string>();
req = fileSource.request(Resource::source(url), [this, url](Response res) {
if (res.error) {
observer->onSourceError(base, std::make_exception_ptr(std::runtime_error(res.error->message)));
} else if (res.notModified) {
return;
} else if (res.noContent) {
observer->onSourceError(base, std::make_exception_ptr(std::runtime_error("unexpectedly empty TileJSON")));
} else {
Tileset newTileset;
// Create a new copy of the Tileset object that holds the base values we've parsed
// from the stylesheet. Then merge in the values parsed from the TileJSON we retrieved
// via the URL.
try {
newTileset = parseTileJSON(*res.data, url, type, tileSize);
} catch (...) {
observer->onSourceError(base, std::current_exception());
return;
}
// Check whether previous information specifies different tile
if (tileset.tiles != newTileset.tiles) {
// Tile URLs changed: force tiles to be reloaded.
invalidateTiles();
// Tile size changed: We need to recalculate the tiles we need to load because we
// might have to load tiles for a different zoom level
// This is done automatically when we trigger the onSourceLoaded observer below.
// Min/Max zoom changed: We need to recalculate what tiles to load, if we have tiles
// loaded that are outside the new zoom range
// This is done automatically when we trigger the onSourceLoaded observer below.
// Attribution changed: We need to notify the embedding application that this
// changed. See https://github.com/mapbox/mapbox-gl-native/issues/2723
// This is not yet implemented.
// Center/bounds changed: We're not using these values currently
}
tileset = newTileset;
loaded = true;
observer->onSourceLoaded(base);
}
});
}
virtual bool prepareUpdate() {
oldValue = NULL;
newDesc = NULL;
if (dynamic_cast<Resource*>(program.get())->changed()) {
invalidateTiles();
}
return true;
}
void TiledLayerChromium::prepareToUpdate(const IntRect& contentRect)
{
ASSERT(m_tiler);
m_skipsDraw = false;
if (contentRect.isEmpty()) {
m_updateRect = IntRect();
return;
}
// Invalidate old tiles that were previously used but aren't in use this
// frame so that they can get reused for new tiles.
invalidateTiles(contentRect);
m_tiler->growLayerToContain(contentRect);
if (!m_tiler->numTiles()) {
m_updateRect = IntRect();
return;
}
// Create tiles as needed, expanding a dirty rect to contain all
// the dirty regions currently being drawn.
IntRect dirtyLayerRect;
int left, top, right, bottom;
m_tiler->contentRectToTileIndices(contentRect, left, top, right, bottom);
for (int j = top; j <= bottom; ++j) {
for (int i = left; i <= right; ++i) {
UpdatableTile* tile = tileAt(i, j);
if (!tile)
tile = createTile(i, j);
if (!tile->texture()->isValid(m_tiler->tileSize(), m_textureFormat))
tile->m_dirtyLayerRect = m_tiler->tileLayerRect(tile);
if (!tile->texture()->reserve(m_tiler->tileSize(), m_textureFormat)) {
m_skipsDraw = true;
cleanupResources();
return;
}
dirtyLayerRect.unite(tile->m_dirtyLayerRect);
}
}
// Due to borders, when the paint rect is extended to tile boundaries, it
// may end up overlapping more tiles than the original content rect. Record
// that original rect so we don't upload more tiles than necessary.
m_updateRect = contentRect;
m_paintRect = m_tiler->layerRectToContentRect(dirtyLayerRect);
if (dirtyLayerRect.isEmpty())
return;
textureUpdater()->prepareToUpdate(m_paintRect, m_tiler->tileSize(), m_tiler->hasBorderTexels());
}
void GeoJSONSource::Impl::load(FileSource& fileSource) {
if (!urlOrGeoJSON.is<std::string>()) {
loaded = true;
return;
}
if (req) {
return;
}
const std::string& url = urlOrGeoJSON.get<std::string>();
req = fileSource.request(Resource::source(url), [this](Response res) {
if (res.error) {
observer->onSourceError(
base, std::make_exception_ptr(std::runtime_error(res.error->message)));
} else if (res.notModified) {
return;
} else if (res.noContent) {
observer->onSourceError(
base, std::make_exception_ptr(std::runtime_error("unexpectedly empty GeoJSON")));
} else {
rapidjson::GenericDocument<rapidjson::UTF8<>, rapidjson::CrtAllocator> d;
d.Parse<0>(res.data->c_str());
if (d.HasParseError()) {
std::stringstream message;
message << d.GetErrorOffset() << " - "
<< rapidjson::GetParseError_En(d.GetParseError());
observer->onSourceError(base,
std::make_exception_ptr(std::runtime_error(message.str())));
return;
}
invalidateTiles();
conversion::Result<GeoJSON> geoJSON = conversion::convertGeoJSON<JSValue>(d);
if (!geoJSON) {
Log::Error(Event::ParseStyle, "Failed to parse GeoJSON data: %s",
geoJSON.error().message.c_str());
// Create an empty GeoJSON VT object to make sure we're not infinitely waiting for
// tiles to load.
setGeoJSON(GeoJSON{ FeatureCollection{} });
} else {
setGeoJSON(*geoJSON);
}
loaded = true;
observer->onSourceLoaded(base);
}
});
}
virtual bool prepareUpdate()
{
bool changed = false;
if (dynamic_cast<Resource*>(layerProgram.get())->changed()) {
changed = true;
}
if (changed) {
invalidateTiles();
}
oldValue = NULL;
newDesc = NULL;
return true;
}
void HydroFlowProducer::graphChanged()
{
invalidateTiles();
CurveDataFactory::graphChanged();
}
void HydroFlowProducer::setPotentialDelta(float delta)
{
this->potentialDelta = delta;
invalidateTiles();
}
void HydroFlowProducer::setSlipParameter(float slip)
{
this->slipParameter = slip;
invalidateTiles();
}
