blame: source/code/MenuSystem.cc

/*

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

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.sf.net

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

*/

#include <SDL/SDL_events.h>

#include "MenuSystem.h"

#include "common.h"

#include "CppSdlImageHolder.hpp"

extern CppSdl::CppSdlImageHolder mouse;

extern SDL_Surface *backgroundImage;

extern bool highPriority;

extern int verboseLevel;

int mousex;

int mousey;

/*Draws a image from on a given Surface. Takes source image, destination surface and coordinates*/

inline void DrawIMG(SDL_Surface *img, SDL_Surface *target, int x, int y)

{

	SDL_Rect dest;

	dest.x = x;

	dest.y = y;

	SDL_BlitSurface(img, NULL, target, &dest);

}

/*CppSdl::CppSdlImageHolder ButtonGfx::_marked;

CppSdl::CppSdlImageHolder ButtonGfx::_unmarked;

int ButtonGfx::xsize;

int ButtonGfx::ysize;

NFont ButtonGfx::thefont;*/

ButtonGfx standardButton;

void ButtonGfx::setSurfaces(CppSdl::CppSdlImageHolder marked,CppSdl::CppSdlImageHolder unmarked)

{

	ButtonGfx::_marked = marked;

	ButtonGfx::_unmarked = unmarked;

	xsize=(marked).GetWidth();

	ysize=(marked).GetHeight();

	if(verboseLevel)

		cout << "Surfaces set, size: " <<xsize << " , " << ysize << endl;

}

Button::Button()

{

	gfx = &standardButton;

	label = "";

	marked = false;

	action = NULL;

	popOnRun = false;

}

Button::~Button()

{

}

Button::Button(const Button& b)

{

	gfx = b.gfx;

	label = b.label;

	marked = b.marked;

	action = b.action;

	popOnRun = false;

}

void Button::setLabel(string text)

{

	label = text;

}

void Button::setAction(void (*action2run)(Button*))

{

	action = action2run;

}

bool Button::isClicked(int x,int y)

{

	if ( x >= this->x && y >= this->y && x<= this->x+gfx->xsize && y <= this->y + gfx->ysize)

		return true;

	else

		return false;

}

void Button::doAction()

{

	if(action)

		action(this);

	else

		cerr << "Warning: button \"" << label << "\" has no action assigned!";

}

void Button::drawTo(SDL_Surface **surface)

{

#if DEBUG

	//cout << "Painting button: " << label << " at: " << x << "," << y << endl;

#endif

	if (marked)

		gfx->_marked.PaintTo(*surface,x,y);

	else

		gfx->_unmarked.PaintTo(*surface,x,y);

	//int stringx = x + (ButtonGfx::xsize)/2 - ButtonGfx::ttf->getTextWidth(label)/2;

	//int stringy = y + (ButtonGfx::ysize)/2 - ButtonGfx::ttf->getTextHeight()/2;

	//ButtonGfx::ttf->writeText(label,surface,stringx,stringy);

	gfx->thefont.setDest(*surface);

	gfx->thefont.drawCenter(x+gfx->xsize/2,y+gfx->ysize/2-gfx->thefont.getHeight(label.c_str())/2,label.c_str());

}

void Button::setPopOnRun(bool popOnRun)

{

	this->popOnRun = popOnRun;

}

bool Button::isPopOnRun() const

{

	return popOnRun;

}

void Button::setGfx(ButtonGfx* gfx)

{

	this->gfx = gfx;

}

int Button::getHeight()

{

	return this->gfx->ysize;

}

void Menu::drawSelf()

{

	DrawIMG(backgroundImage,screen,0,0);

	vector<Button*>::iterator it;

	for(it = buttons.begin(); it < buttons.end(); it++)

		(*it)->drawTo(&screen);

	exit.drawTo(&screen);

	standardButton.thefont.draw(50,50,title.c_str());

	mouse.PaintTo(screen,mousex,mousey);

}

void Menu::performClick(int x,int y)

{

	vector<Button*>::iterator it;

	for(it = buttons.begin(); it < buttons.end(); it++)

	{

		Button *b = (*it);

		if(b->isClicked(x,y))

			b->doAction();

		if(b->isPopOnRun())

			running = false;

	}

	if(exit.isClicked(x,y))

		running = false;

}

void Menu::placeButtons()

{

	int nextY = 100;

	const int X = 50;

	vector<Button*>::iterator it;

	for(it = buttons.begin(); it < buttons.end(); it++)

	{

		(*it)->x = X;

		(*it)->y = nextY;

		nextY += (*it)->getHeight()+10;

	}

	exit.x = X;

	exit.y = nextY;

}

void Menu::addButton(Button *b)

{

	buttons.push_back(b);

	b->marked = false;

	placeButtons();

}

Menu::Menu(SDL_Surface **screen)

{

	this->screen = *screen;

	buttons = vector<Button*>(10);

	isSubmenu = true;

	exit.setLabel( _("Back") );

}

Menu::Menu(SDL_Surface **screen,bool submenu)

{

	this->screen = *screen;

	buttons = vector<Button*>(0);

	isSubmenu = submenu;

	if(isSubmenu)

		exit.setLabel( _("Back") );

	else

		exit.setLabel( _("Exit") );

}

Menu::Menu(SDL_Surface** screen, string title, bool submenu)

{

	this->screen = *screen;

	buttons = vector<Button*>(0);

	isSubmenu = submenu;

	this->title = title;

	if(isSubmenu)

		exit.setLabel(_("Back") );

	else

		exit.setLabel(_("Exit") );

}

void Menu::run()

{

	running = true;

	bool bMouseUp = false;

	long oldmousex = mousex;

	long oldmousey = mousey;

	while(running && !Config::getInstance()->isShuttingDown())

	{

		if (!(highPriority)) SDL_Delay(10);

		SDL_Event event;

		while ( SDL_PollEvent(&event) )

		{

			if ( event.type == SDL_QUIT )

			{

				Config::getInstance()->setShuttingDown(5);

				running = false;

			}

			if ( event.type == SDL_KEYDOWN )

			{

				if ( event.key.keysym.sym == SDLK_ESCAPE )

				{

					running = false;

				}

				if (event.key.keysym.sym == SDLK_UP)

				{

					marked--;

					if(marked<0)

						marked = buttons.size(); //not -1, since exit is after the last element in the list

				}

				if (event.key.keysym.sym == SDLK_DOWN)

				{

					marked++;

					if(marked>buttons.size())

						marked = 0;

				}

				if(event.key.keysym.sym == SDLK_RETURN || event.key.keysym.sym == SDLK_KP_ENTER )

				{

					if(marked < buttons.size())

					{

						buttons.at(marked)->doAction();

						if(buttons.at(marked)->isPopOnRun())

							running = false;

					}

					if(marked == buttons.size())

						running = false;

				}

			}

		}

		for(int i=0; i<buttons.size(); i++)

		{

			buttons.at(i)->marked = (i == marked);

		}

		exit.marked = (marked == buttons.size());

		Uint8 buttonState = SDL_GetMouseState(&mousex,&mousey);

		// If the mouse button is released, make bMouseUp equal true

		if ( (buttonState&SDL_BUTTON(1))==0)

		{

			bMouseUp=true;

		}

		if(abs(mousex-oldmousex)>5 || abs(mousey-oldmousey)>5)

		{

			for(int i=0; i< buttons.size(); ++i)

			{

				if(buttons.at(i)->isClicked(mousex,mousey))

				{

					marked = i;

				}

			}

			if(exit.isClicked(mousex,mousey))

			{

				marked = buttons.size();

			}

			oldmousex = mousex;

			oldmousey = mousey;

		}

		//mouse clicked

		if(buttonState&SDL_BUTTON(1)==SDL_BUTTON(1) && bMouseUp)

		{

			bMouseUp = false;

			for(int i=0; i< buttons.size(); ++i)

			{

				if(buttons.at(i)->isClicked(mousex,mousey))

				{

					buttons.at(i)->doAction();

					if(buttons.at(i)->isPopOnRun())

						running = false;

					mousex = 0;

				}

			}

			if(exit.isClicked(mousex,mousey))

			{

				running = false;

			}

		}

		drawSelf();

		SDL_Flip(screen);

	}

}