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/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#pragma once
#include <mutex>
#include "BLI_hash.hh"
#include "BLI_map.hh"
#include "BLI_session_uuid.h"
#include "BLI_set.hh"
#include "DNA_ID.h"
#include "DNA_modifier_types.h"
#include "DNA_session_uuid_types.h"
struct ModifierData;
struct Object;
struct bNode;
struct bNodeTree;
struct bContext;
/**
* Contains the context necessary to determine when to display settings for a certain node tree
* that may be used for multiple modifiers and objects. The object name and modifier session UUID
* are used instead of pointers because they are re-allocated between evaluations.
*
* \note This does not yet handle the context of nested node trees.
*/
class NodeTreeEvaluationContext {
private:
std::string object_name_;
SessionUUID modifier_session_uuid_;
public:
NodeTreeEvaluationContext(const Object &object, const ModifierData &modifier)
{
object_name_ = reinterpret_cast<const ID &>(object).name;
modifier_session_uuid_ = modifier.session_uuid;
}
uint64_t hash() const
{
const uint64_t hash1 = blender::DefaultHash<std::string>{}(object_name_);
const uint64_t hash2 = BLI_session_uuid_hash_uint64(&modifier_session_uuid_);
return hash1 ^ (hash2 * 33); /* Copied from DefaultHash for std::pair. */
}
bool operator==(const NodeTreeEvaluationContext &other) const
{
return other.object_name_ == object_name_ &&
BLI_session_uuid_is_equal(&other.modifier_session_uuid_, &modifier_session_uuid_);
}
};
enum class NodeWarningType {
Error,
Warning,
Info,
};
struct NodeWarning {
NodeWarningType type;
std::string message;
};
struct NodeUIStorage {
blender::Vector<NodeWarning> warnings;
blender::Set<std::string> attribute_name_hints;
};
struct NodeTreeUIStorage {
blender::Map<NodeTreeEvaluationContext, blender::Map<std::string, NodeUIStorage>> context_map;
std::mutex context_map_mutex;
};
const NodeUIStorage *BKE_node_tree_ui_storage_get_from_context(const bContext *C,
const bNodeTree &ntree,
const bNode &node);
void BKE_nodetree_ui_storage_free_for_context(bNodeTree &ntree,
const NodeTreeEvaluationContext &context);
void BKE_nodetree_error_message_add(bNodeTree &ntree,
const NodeTreeEvaluationContext &context,
const bNode &node,
const NodeWarningType type,
std::string message);
void BKE_nodetree_attribute_hint_add(bNodeTree &ntree,
const NodeTreeEvaluationContext &context,
const bNode &node,
const blender::StringRef attribute_name);
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