blame: source/code/MenuSystem.h

/*

===========================================================================

blockattack - Block Attack - Rise of the Blocks

Copyright (C) 2005-2012 Poul Sander

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, see http://www.gnu.org/licenses/

Source information and contacts persons can be found at

http://blockattack.net

===========================================================================

*/

#ifndef _MENUSYSTEM_H

#define	_MENUSYSTEM_H

#include <string>

#include "SDL.h"

#include <map>

#include <vector>

#include "sago/SagoSprite.hpp"

#include "sago/GameStateInterface.hpp"

#include <memory>

#include "sago/SagoTextField.hpp"

//The ButtonGfx object hold common media for all buttons, so we can reskin them by only changeing one pointer

struct ButtonGfx

{

	//The size of the buttons, so we don't have to ask w and h from the SDL Surfaces each time

	int xsize = 0;

	int ysize = 0;

	sago::SagoTextField* getLabel(const std::string& text, bool marked) const;

	void setSurfaces();

	std::string menu_marked = "menu_marked";

	std::string menu_unmarked = "menu_unmarked";

private:

	mutable std::map<std::string, std::shared_ptr<sago::SagoTextField> > labels;

	mutable std::map<std::string, std::shared_ptr<sago::SagoTextField> > labels_marked;

};

//A button

class Button

{

private:

	//Pointer to a callback function.

	void (*action)(void) = nullptr;

	//If true the menu should also be closed then the button is clicked

	bool popOnRun = false;

	//The label. This is written on the button

	std::string label;

public:

	//Is the button marked?

	bool marked = false;

	//Where is the button on the screen

	int x = 0;

	int y = 0;

	ButtonGfx standardButton;

	Button() = default;

	Button(const Button& b);

	Button& operator=(const Button& other);

	virtual ~Button() = default;

	//Set the text to write on the button

	void setLabel(const std::string& text);

	//Set the action to run

	void setAction(void (*action2run)(void));

	virtual void doAction(); //Run the callback function

	void setPopOnRun(bool popOnRun);

	bool isPopOnRun() const;

	virtual const std::string& getLabel() const {return this->label; };

	//May hold any other information the callback might need

	int iGeneric1 = 0;

};

class Menu : public sago::GameStateInterface

{

private:

	bool isSubmenu = false; //True if the menu is a submenu

	int marked = 0; //The index of the marked button (for keyboard up/down)

	bool running = true; //The menu is running. The menu will terminate then this is false

	SDL_Renderer *screen = nullptr; //Pointer to the screen to draw to

	std::string title;

	bool bMouseUp = false;

public:

	//numberOfItems is the expected numberOfItems for vector initialization

	//SubMenu is true by default

	Menu(SDL_Renderer *screen,bool isSubmenu);

	explicit Menu(SDL_Renderer *screen);

	Menu(SDL_Renderer *screen, const std::string& title, bool isSubmenu);

	virtual ~Menu() {}

	//Add a button to the menu

	void addButton(Button *b);

	bool IsActive() override;

	void Draw(SDL_Renderer* target) override;

	void ProcessInput(const SDL_Event& event, bool &processed) override;

	void Update() override;

	void drawSelf(SDL_Renderer* target);        //Private function to draw the screen

	virtual void placeButtons(); //Rearanges the buttons to the correct place.

	std::vector<Button*> buttons; //Vector holder the buttons

	Button exit; //The exit button is special since it does not have a callback function

};

class FileMenu

{

private:

	std::string pm_path;

	std::string pm_fileending;

	bool pm_hidden_files = false;

public:

	FileMenu(const std::string& path, const std::string& fileending, bool hidden_files = false);

	std::string getFile(SDL_Surface **screen);

};

bool isUpEvent(const SDL_Event& event);

bool isDownEvent(const SDL_Event& event);

bool isLeftEvent(const SDL_Event& event);

bool isRightEvent(const SDL_Event& event);

bool isEscapeEvent(const SDL_Event& event);

bool isConfirmEvent(const SDL_Event& event);

#endif	/* _MENUSYSTEM_H */