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vcmi/lib/CConfigHandler.h

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#pragma once
#include "../lib/JsonNode.h"
/*
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* CConfigHandler.h, part of VCMI engine
*
* Authors: listed in file AUTHORS in main folder
*
* License: GNU General Public License v2.0 or later
* Full text of license available in license.txt file, in main folder
*
*/
class Settings;
class SettingsListener;
/// Main storage of game settings
class DLL_LINKAGE SettingsStorage
{
//Helper struct to access specific node either via chain of operator[] or with one operator() (vector)
template<typename Accessor>
struct DLL_LINKAGE NodeAccessor
{
SettingsStorage & parent;
std::vector<std::string> path;
NodeAccessor(SettingsStorage & _parent, std::vector<std::string> _path);
NodeAccessor<Accessor> operator [] (std::string nextNode) const;
NodeAccessor<Accessor> operator () (std::vector<std::string> _path);
operator Accessor() const;
};
std::set<SettingsListener*> listeners;
JsonNode config;
JsonNode & getNode(std::vector<std::string> path);
// Calls all required listeners
void invalidateNode(const std::vector<std::string> &changedPath);
Settings get(std::vector<std::string> path);
public:
// Initialize config structure
SettingsStorage();
void init();
// Get write access to config node at path
const NodeAccessor<Settings> write;
// Get access to listener at path
const NodeAccessor<SettingsListener> listen;
//Read access, see JsonNode::operator[]
const JsonNode& operator [](std::string value);
friend class SettingsListener;
friend class Settings;
};
/// Class for listening changes in specific part of configuration (e.g. change of music volume)
class DLL_LINKAGE SettingsListener
{
SettingsStorage &parent;
// Path to this node
std::vector<std::string> path;
// Callback
std::function<void(const JsonNode&)> callback;
SettingsListener(SettingsStorage &_parent, const std::vector<std::string> &_path);
// Executes callback if changedpath begins with path
void nodeInvalidated(const std::vector<std::string> & changedPath);
public:
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SettingsListener(const SettingsListener &sl);
~SettingsListener();
// assign callback function
void operator()(std::function<void(const JsonNode&)> _callback);
friend class SettingsStorage;
};
/// System options, provides write access to config tree with auto-saving on change
class DLL_LINKAGE Settings
{
SettingsStorage &parent;
//path to this node
std::vector<std::string> path;
JsonNode &node;
JsonNode copy;
//Get access to node pointed by path
Settings(SettingsStorage &_parent, const std::vector<std::string> &_path);
public:
//Saves config if it was modified
~Settings();
//Returns node selected during construction
JsonNode* operator ->();
const JsonNode* operator ->() const;
//Helper, replaces JsonNode::operator[]
JsonNode& operator [](std::string value);
const JsonNode& operator [](std::string value) const;
friend class SettingsStorage;
};
namespace config
{
struct DLL_LINKAGE ButtonInfo
{
std::string defName;
std::vector<std::string> additionalDefs;
int x, y; //position on the screen
bool playerColoured; //if true button will be colored to main player's color (works properly only for appropriate 8bpp graphics)
};
/// Struct which holds data about position of several GUI elements at the adventure map screen
struct DLL_LINKAGE AdventureMapConfig
{
//minimap properties
int minimapX, minimapY, minimapW, minimapH;
//statusbar
int statusbarX, statusbarY; //pos
std::string statusbarG; //graphic name
//resdatabar
int resdatabarX, resdatabarY, resDist, resDateDist, resOffsetX, resOffsetY; //pos
std::string resdatabarG; //graphic name
//infobox
int infoboxX, infoboxY;
//advmap
int advmapX, advmapY, advmapW, advmapH;
bool smoothMove;
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bool puzzleSepia;
bool screenFading;
bool objectFading;
//general properties
std::string mainGraphic;
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std::string worldViewGraphic;
//buttons
ButtonInfo kingOverview, underground, questlog, sleepWake, moveHero, spellbook, advOptions,
sysOptions, nextHero, endTurn;
//hero list
int hlistX, hlistY, hlistSize;
std::string hlistMB, hlistMN, hlistAU, hlistAD;
//town list
int tlistX, tlistY, tlistSize;
std::string tlistAU, tlistAD;
//gems
int gemX[4], gemY[4];
std::vector<std::string> gemG;
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//in-game console
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int inputLineLength, outputLineLength;
//kingdom overview
int overviewPics, overviewSize; //pic count in def and count of visible slots
std::string overviewBg; //background name
};
struct DLL_LINKAGE GUIOptions
{
AdventureMapConfig ac;
};
/// Handles adventure map screen settings
class DLL_LINKAGE CConfigHandler
{
GUIOptions *current; // pointer to current gui options
public:
typedef std::map<std::pair<int,int>, GUIOptions > GuiOptionsMap;
GuiOptionsMap guiOptions;
void init();
CConfigHandler(void); //c-tor
~CConfigHandler(void); //d-tor
GUIOptions *go() { return current; };
void SetResolution(int x, int y)
{
std::pair<int,int> index(x, y);
if (guiOptions.count(index) == 0)
current = nullptr;
else
current = &guiOptions.at(index);
}
};
}
extern DLL_LINKAGE SettingsStorage settings;
extern DLL_LINKAGE config::CConfigHandler conf;