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Menu.cpp
198 lines (193 loc) · 6.82 KB
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Menu.cpp
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#include "Menu.h"
#include "Application.h"
#include "utilities.h"
Menu::Menu(const sf::Font& f,int charSize,int linePad,int scrollBarWidth) :
rndrTxtre(),
spr(),
selectionBg(),
scrollBar(),
view(),
font(f),
menuList(),
active(true),
characterSize(charSize),
linePadding(linePad),
marker(0),
itemsVisible(0),
scrolled(0),
scroll(false),
clicked(-1),
bgColor(sf::Color::Transparent)
{
selectionBg.setFillColor(sf::Color(210,210,210));
scrollBar.setFillColor(sf::Color(100,100,100));
scrollBar.setSize(sf::Vector2f(scrollBarWidth,0));
if(linePad == -1)//at least i don't use negative line paddings , so this ok for me,
{
linePadding = font.getLineSpacing(characterSize)-characterSize;
}
}
void Menu::draw(sf::RenderTarget &target)
{
target.draw(spr);
if(scroll)
target.draw(scrollBar);
}
void Menu::clear()
{
menuList.clear();
}
void Menu::add(const std::string& item,sf::Color textColor)
{
sfTextPtr newText(new sf::Text(item,font,characterSize));
newText->setColor(textColor);
newText->setPosition(0,menuList.size()*(linePadding+characterSize));
menuList.push_back(std::move(newText));
}
void Menu::create(float width,float height)
{
if(height == 0)
height = menuList.size()*(linePadding+characterSize);
else
height = std::min(menuList.size()*float(linePadding+characterSize),round(height,linePadding+characterSize));
itemsVisible = (height/(linePadding+characterSize));
//max width of the sf::Texts of the menu items
float maxwidth = (**std::max_element(menuList.begin(),menuList.end(),
[](sfTextPtr& a,sfTextPtr &b){ return a->getLocalBounds().width<b->getLocalBounds().width;})).getLocalBounds().width;
if(size_t(itemsVisible) < menuList.size())
{
scroll = true;
}
if(width == 0) width = maxwidth;
else
width = std::max(width,maxwidth);
rndrTxtre.clear(bgColor);
rndrTxtre.create(width,height);
view = rndrTxtre.getDefaultView();
selectionBg.setSize(sf::Vector2f(width,linePadding+characterSize));
if(scroll)
{
scrollBar.setSize(sf::Vector2f( scrollBar.getSize().x,std::max(5.0f,height/(menuList.size()+1-itemsVisible))));
scrollBar.setPosition(spr.getPosition().x+width,spr.getPosition().y+0);
}
rndrTxtre.clear(bgColor);
rndrTxtre.draw(selectionBg);
for(const auto &a : menuList)
{
rndrTxtre.draw(*a);
}
rndrTxtre.display();
spr.setTexture(rndrTxtre.getTexture(),true);
}
void Menu::step(float dt)
{
if(!active) return;
int deltaScroll = 0;
bool update = false;
sf::Vector2f mouse = sf::Vector2f(sf::Mouse::getPosition(Application::getWindow()));
sf::Vector2f relMouse = mouse - spr.getPosition();
sf::Vector2f mouseInView = rndrTxtre.mapPixelToCoords(static_cast<sf::Vector2i>(relMouse));
if(scroll && sf::Mouse::isButtonPressed(sf::Mouse::Left) && contains(scrollBar.getPosition().x,spr.getPosition().y,scrollBar.getSize().x,view.getSize().y,mouse.x,mouse.y))
{
int new_scrolled = (menuList.size()-itemsVisible+1)*relMouse.y/(view.getSize().y);
if(new_scrolled != scrolled)
{
deltaScroll = new_scrolled-scrolled;
update = true;
}
}
if(update) updateTexture(deltaScroll);
}
void Menu::passEvent(const sf::Event &event)
{
if(!active) return;
bool update = false;
int deltaScroll = 0;
if(event.type == sf::Event::KeyPressed)
{
switch(event.key.code)
{
case sf::Keyboard::Up:
if(--marker < 0)
{
marker = menuList.size()-1;
deltaScroll = menuList.size()-itemsVisible;
}
else if(marker < scrolled)
deltaScroll = -1;
update = true;
break;
case sf::Keyboard::Down:
if(size_t(++marker) > menuList.size()-1)
{
deltaScroll = -menuList.size()+itemsVisible;
marker = 0;
}
else if(marker-scrolled+1>itemsVisible)
deltaScroll = 1;
update = true;
break;
case sf::Keyboard::Return:
clicked = marker;
break;
default:
break;
}
}
else if(event.type == sf::Event::MouseMoved)
{
sf::Vector2f mouse(event.mouseMove.x,event.mouseMove.y);
sf::Vector2f mouseInView = rndrTxtre.mapPixelToCoords(sf::Vector2i(mouse) - sf::Vector2i(spr.getPosition()));
if(spr.getGlobalBounds().contains(mouse) && mouseInView.y/(linePadding+characterSize) != marker && mouseInView.y/(linePadding+characterSize)-scrolled <= menuList.size())
{
marker = mouseInView.y/(linePadding+characterSize);
update = true;
}
}
else if(event.type == sf::Event::MouseButtonPressed)
{
sf::Vector2f mouse(event.mouseButton.x,event.mouseButton.y);
sf::Vector2f mouseInView = rndrTxtre.mapPixelToCoords(sf::Vector2i(mouse) - sf::Vector2i(spr.getPosition()));
if(spr.getGlobalBounds().contains(mouse) && mouseInView.y/(linePadding+characterSize) != marker && mouseInView.y/(linePadding+characterSize)-scrolled <= menuList.size())
{
clicked = marker = mouseInView.y/(linePadding+characterSize);
update = true;
}
}
else if(event.type == sf::Event::MouseWheelMoved)
{
if(-event.mouseWheel.delta+scrolled+itemsVisible <= int(menuList.size()) && -event.mouseWheel.delta+scrolled >= 0)
{
sf::Vector2f mouse(event.mouseWheel.x,event.mouseWheel.y);
if(spr.getGlobalBounds().contains(mouse))
{
deltaScroll = -event.mouseWheel.delta;
update = true;
mouse.y += deltaScroll*(linePadding+characterSize);//adjust for the new scroll
mouse -= spr.getPosition();
mouse = rndrTxtre.mapPixelToCoords(static_cast<sf::Vector2i>(mouse));
if(mouse.y/(linePadding+characterSize) != marker/* && mouse.y/(linePadding+characterSize)-scrolled <= itemsVisible*/)
marker = mouse.y/(linePadding+characterSize);
}
}
}
if(update) updateTexture(deltaScroll);
}
void Menu::updateTexture(int deltaScroll)
{
selectionBg.setPosition(0,marker*(linePadding+characterSize));
if(deltaScroll)
{
scrolled += deltaScroll;
view.move(0,deltaScroll*(linePadding+characterSize));
scrollBar.setPosition(scrollBar.getPosition().x,spr.getPosition().y+(view.getSize().y-scrollBar.getSize().y)*scrolled/(menuList.size()-itemsVisible));
}
rndrTxtre.setView(view);
rndrTxtre.clear(bgColor);
rndrTxtre.draw(selectionBg);
for(const auto &a : menuList)
{
rndrTxtre.draw(*a);
}
rndrTxtre.display();
}