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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* 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 3 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/>.
*
*/
/*
* This code is based on the CRAB engine
*
* Copyright (c) Arvind Raja Yadav
*
* Licensed under MIT
*
*/
#ifndef CRAB_PAGEMENU_H
#define CRAB_PAGEMENU_H
#include "crab/ui/menu.h"
namespace Crab {
namespace pyrodactyl {
namespace ui {
// Sometimes we need multiple pages in a menu, this object does that
// Used in save, load, mod and quest menu
template<typename T>
class PageMenu {
// The buttons for cycling between pages of the menu
Button _prev, _next;
// Each page is stored separately in a menu object
Common::Array<Menu<T>> _menu;
// Keep track of which page we are at, and how many elements we keep in a page
uint _currentPage, _elementsPerPage, _rows, _cols;
// The image used for the elements
Button _ref;
// This vector stores the increments in x,y for each new button
Vector2i _inc;
// Display "Page 1 of 3" style information for the menu
TextData _status;
Common::String _info;
public:
PageMenu() {
_currentPage = 0;
_elementsPerPage = 1;
_rows = 1;
_cols = 1;
clear();
}
~PageMenu() {}
void reset() {
for (auto &m : _menu)
m.reset();
}
void clear() {
_menu.resize(1);
_menu[0].clear();
_menu[0].useKeyboard(true);
}
// Get the elements per page
uint elementsPerPage() {
return _elementsPerPage;
}
// This is added to the result from handleEvents to calculate the exact position
uint index() {
return _currentPage * _elementsPerPage;
}
// The end position of the elements
uint indexPlusOne() {
return (_currentPage + 1) * _elementsPerPage;
}
// Get the current page of the menu
uint currentPage() {
return _currentPage;
}
void currentPage(int &val) {
_currentPage = val;
}
// Get the index of the hovered element in the menu
int hoverIndex() {
if (_menu[_currentPage].hoverIndex() >= 0)
return (_currentPage * _elementsPerPage) + _menu[_currentPage].hoverIndex();
return -1;
}
// Get the base position of the elements
int baseX(const int &count) {
return _ref.x + _inc.x * (count % _cols);
}
int baseY(const int &count) {
return _ref.y + _inc.y * (count / _cols);
}
// This is used to get the coordinates of a button
const int &curX(const int &count) {
return _menu[_currentPage]._element[count].x;
}
const int &curY(const int &count) {
return _menu[_currentPage]._element[count].y;
}
void image(const int &slot, const int &page, ButtonImage &bi) {
_menu[page]._element[slot].img(bi);
}
void assignPaths() {
for (auto &m : _menu)
m.assignPaths();
}
void useKeyboard(const bool &val) {
for (auto &m : _menu)
m.useKeyboard(val);
}
void setUI() {
_prev.setUI();
_next.setUI();
_ref.setUI();
_status.setUI();
for (auto &m : _menu)
m.setUI();
}
void updateInfo() {
_info = numberToString(_currentPage + 1);
_info += " of ";
_info += numberToString(_menu.size());
}
void load(rapidxml::xml_node<char> *node) {
using namespace pyrodactyl::input;
if (nodeValid(node)) {
if (nodeValid("prev", node)) {
_prev.load(node->first_node("prev"));
_prev._hotkey.set(IU_PREV);
}
if (nodeValid("next", node)) {
_next.load(node->first_node("next"));
_next._hotkey.set(IU_NEXT);
}
if (nodeValid("reference", node))
_ref.load(node->first_node("reference"));
if (nodeValid("inc", node))
_inc.load(node->first_node("inc"));
if (nodeValid("status", node))
_status.load(node->first_node("status"));
if (nodeValid("dim", node)) {
rapidxml::xml_node<char> *dimnode = node->first_node("dim");
loadNum(_rows, "rows", dimnode);
loadNum(_cols, "cols", dimnode);
_elementsPerPage = _rows * _cols;
}
}
}
void add(uint &slot, uint &page) {
if (slot >= _elementsPerPage) {
++page;
slot = 0;
_menu.resize(page + 1);
_menu[page].useKeyboard(true);
}
T b;
b.init(_ref, _inc.x * (slot % _cols), _inc.y * (slot / _cols));
_menu[page]._element.push_back(b);
++slot;
assignPaths();
updateInfo();
}
void add() {
uint page = _menu.size() - 1;
uint slot = _menu[page]._element.size();
add(slot, page);
}
void erase() {
uint page = _menu.size() - 1;
_menu[page]._element.pop_back();
assignPaths();
updateInfo();
}
int handleEvents(const Common::Event &event) {
using namespace pyrodactyl::input;
if (_currentPage > 0 && _prev.handleEvents(event) == BUAC_LCLICK) {
_currentPage--;
updateInfo();
if ((int)_currentPage < 0)
_currentPage = 0;
}
if (_currentPage < _menu.size() - 1 && _next.handleEvents(event) == BUAC_LCLICK) {
_currentPage++;
updateInfo();
if (_currentPage >= _menu.size())
_currentPage = _menu.size() - 1;
}
return _menu[_currentPage].handleEvents(event);
}
void draw() {
_status.draw(_info);
_menu[_currentPage].draw();
if (_currentPage > 0)
_prev.draw();
if (_currentPage < _menu.size() - 1)
_next.draw();
}
};
typedef PageMenu<Button> PageButtonMenu;
} // End of namespace ui
} // End of namespace pyrodactyl
} // End of namespace Crab
#endif // CRAB_PAGEMENU_H
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