blame: source/code/MenuSystem.cpp

/*

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

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"

#include "global.hpp"

int mousex;

int mousey;

using namespace std;

/*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, nullptr, target, &dest);

}

ButtonGfx standardButton;

void ButtonGfx::setSurfaces(shared_ptr<CppSdl::CppSdlImageHolder> marked, shared_ptr<CppSdl::CppSdlImageHolder> unmarked) {

	this->marked = marked;

	this->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 = nullptr;

	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(const 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;

	}

	return false;

}

void Button::doAction() {

	if (action) {

		action(this);

		return;

	}

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

}

void Button::drawToScreen() {

#if DEBUG

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

#endif

	if (marked) {

		gfx->marked->PaintTo(screen, x, y);

	}

	else {

		gfx->unmarked->PaintTo(screen,x,y);

	}

	gfx->thefont.setDest(screen);

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

	}

	exit.drawToScreen();

	standardButton.thefont.draw(50, 50, "%s", 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, const 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);

	}

}