Files
OpenSpace/modules/globebrowsing/src/layergroup.cpp
2020-10-10 17:32:15 +02:00

236 lines
8.6 KiB
C++

/*****************************************************************************************
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* OpenSpace *
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* Copyright (c) 2014-2020 *
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#include <modules/globebrowsing/src/layergroup.h>
#include <modules/globebrowsing/src/layer.h>
#include <openspace/documentation/documentation.h>
#include <ghoul/logging/logmanager.h>
#include <ghoul/misc/profiling.h>
namespace {
constexpr const char* _loggerCat = "LayerGroup";
constexpr const char* KeyFallback = "Fallback";
constexpr openspace::properties::Property::PropertyInfo BlendTileInfo = {
"BlendTileLevels",
"Blend between levels",
"If this value is enabled, images between different levels are interpolated, "
"rather than switching between levels abruptly. This makes transitions smoother "
"and more visually pleasing.",
openspace::properties::Property::Visibility::Hidden
};
} // namespace
namespace openspace::globebrowsing {
LayerGroup::LayerGroup(layergroupid::GroupID id)
: properties::PropertyOwner({
layergroupid::LAYER_GROUP_IDENTIFIERS[id],
layergroupid::LAYER_GROUP_NAMES[id]
})
, _groupId(id)
, _levelBlendingEnabled(BlendTileInfo, true)
{
addProperty(_levelBlendingEnabled);
}
void LayerGroup::setLayersFromDict(const ghoul::Dictionary& dict) {
for (size_t i = 1; i <= dict.size(); i++) {
ghoul::Dictionary layerDict = dict.value<ghoul::Dictionary>(std::to_string(i));
try {
addLayer(layerDict);
}
catch (const ghoul::RuntimeError& e) {
LERRORC(e.component, e.message);
if (layerDict.hasKeyAndValue<ghoul::Dictionary>(KeyFallback)) {
LWARNING("Unable to create layer. Initializing fallback layer.");
ghoul::Dictionary fallbackLayerDict =
layerDict.value<ghoul::Dictionary>(KeyFallback);
try {
addLayer(fallbackLayerDict);
}
catch (const ghoul::RuntimeError& except) {
LERRORC(except.component, except.message);
}
}
}
}
}
void LayerGroup::initialize() {
ZoneScoped
for (const std::unique_ptr<Layer>& l : _layers) {
l->initialize();
}
}
void LayerGroup::deinitialize() {
ZoneScoped
for (const std::unique_ptr<Layer>& l : _layers) {
l->deinitialize();
}
}
int LayerGroup::update() {
ZoneScoped
int res = 0;
_activeLayers.clear();
for (const std::unique_ptr<Layer>& layer : _layers) {
if (layer->enabled()) {
res += layer->update();
_activeLayers.push_back(layer.get());
}
}
return res;
}
Layer* LayerGroup::addLayer(const ghoul::Dictionary& layerDict) {
ZoneScoped
documentation::TestResult res = documentation::testSpecification(
Layer::Documentation(),
layerDict
);
if (!res.success) {
LERROR("Error adding layer. " + ghoul::to_string(res));
}
if (!layerDict.hasKeyAndValue<std::string>("Identifier")) {
LERROR("'Identifier' must be specified for layer.");
return nullptr;
}
std::unique_ptr<Layer> layer = std::make_unique<Layer>(_groupId, layerDict, *this);
layer->onChange(_onChangeCallback);
if (hasPropertySubOwner(layer->identifier())) {
LINFO("Layer with identifier " + layer->identifier() + " already exists.");
_levelBlendingEnabled.setVisibility(properties::Property::Visibility::User);
return nullptr;
}
Layer* ptr = layer.get();
_layers.push_back(std::move(layer));
update();
if (_onChangeCallback) {
_onChangeCallback(ptr);
}
addPropertySubOwner(ptr);
_levelBlendingEnabled.setVisibility(properties::Property::Visibility::User);
return ptr;
}
void LayerGroup::deleteLayer(const std::string& layerName) {
for (std::vector<std::unique_ptr<Layer>>::iterator it = _layers.begin();
it != _layers.end();
++it)
{
if (it->get()->identifier() == layerName) {
// we need to make a copy as the layername is only a reference
// which will no longer be valid once it is deleted
std::string name = layerName;
removePropertySubOwner(it->get());
(*it)->deinitialize();
_layers.erase(it);
update();
if (_onChangeCallback) {
_onChangeCallback(nullptr);
}
LINFO("Deleted layer " + name);
if (_layers.empty()) {
_levelBlendingEnabled.setVisibility(
properties::Property::Visibility::Hidden
);
}
return;
}
}
LERROR("Could not find layer " + layerName);
}
void LayerGroup::moveLayers(int oldPosition, int newPosition) {
oldPosition = std::max(0, oldPosition);
newPosition = std::min(newPosition, static_cast<int>(_layers.size()));
// We need to adjust the new position as we first delete the old position, if this
// position is before the new position we have reduced the size of the vector by 1 and
// need to adapt where we want to put the value in
if (oldPosition < newPosition) {
newPosition -= 1;
}
// There are two synchronous vectors that we have to update here. The _layers vector
// is used to determine the order while rendering, the _subowners is the order in
// which the layers are shown in the UI
auto oldPosLayers = _layers.begin() + oldPosition;
std::unique_ptr<Layer> v = std::move(*oldPosLayers);
_layers.erase(oldPosLayers);
auto newPosLayers = _layers.begin() + newPosition;
_layers.insert(newPosLayers, std::move(v));
auto oldPosOwner = _subOwners.begin() + oldPosition;
PropertyOwner* owner = std::move(*oldPosOwner);
_subOwners.erase(oldPosOwner);
auto newPosOwner = _subOwners.begin() + newPosition;
_subOwners.insert(newPosOwner, std::move(owner));
}
std::vector<Layer*> LayerGroup::layers() const {
std::vector<Layer*> res;
res.reserve(_layers.size());
for (const std::unique_ptr<Layer>& layer : _layers) {
res.push_back(layer.get());
}
return res;
}
const std::vector<Layer*>& LayerGroup::activeLayers() const {
return _activeLayers;
}
int LayerGroup::pileSize() const {
return _levelBlendingEnabled ? 3 : 1;
}
bool LayerGroup::layerBlendingEnabled() const {
return _levelBlendingEnabled;
}
void LayerGroup::onChange(std::function<void(Layer*)> callback) {
_onChangeCallback = std::move(callback);
_levelBlendingEnabled.onChange([this]() {_onChangeCallback(nullptr); });
for (const std::unique_ptr<Layer>& layer : _layers) {
layer->onChange(_onChangeCallback);
}
}
} // namespace openspace::globebrowsing