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#include "../include/Chatbar.hpp"
#include "../include/ResourceCache.hpp"
#include "../include/Settings.hpp"
#include "../include/Channel.hpp"
#include <cmath>
#include <cstring>
using namespace std;
namespace dchat
{
const float FONT_SIZE = 24;
const float BOX_PADDING_X = 15.0f;
const float BOX_PADDING_Y = 5.0f;
const int BLINK_TIME_VISIBLE_MS = 500;
const int BLINK_TIME_INVISIBLE_MS = 500;
Chatbar::Chatbar() :
text("", ResourceCache::getFont("fonts/Roboto-Regular.ttf"), FONT_SIZE * Settings::getScaling()),
caretIndex(0),
focused(true)
{
text.setFillColor(sf::Color(240, 240, 240));
background.setFillColor(sf::Color(60, 60, 60));
}
void Chatbar::addChar(sf::Uint32 codePoint)
{
auto str = text.getString();
str.insert(caretIndex, codePoint);
text.setString(str);
++caretIndex;
caretOffset = text.findCharacterPos(caretIndex) - text.getPosition();
blinkTimer.restart();
}
const sf::String& Chatbar::getString() const
{
return text.getString();
}
void Chatbar::removePreviousChar()
{
if(caretIndex > 0)
{
auto str = text.getString();
str.erase(caretIndex - 1);
text.setString(str);
--caretIndex;
caretOffset = text.findCharacterPos(caretIndex) - text.getPosition();
}
blinkTimer.restart();
}
void Chatbar::removeNextChar()
{
if(caretIndex < text.getString().getSize())
{
auto str = text.getString();
str.erase(caretIndex);
text.setString(str);
}
blinkTimer.restart();
}
void Chatbar::clear()
{
text.setString("");
caretIndex = 0;
caretOffset.x = 0.0f;
caretOffset.y = 0.0f;
blinkTimer.restart();
}
void Chatbar::moveCaretLeft()
{
caretIndex = max(0, caretIndex - 1);
// TODO: Use glyph size to optimize this, no need to iterate all glyphs
caretOffset = text.findCharacterPos(caretIndex) - text.getPosition();
blinkTimer.restart();
}
void Chatbar::moveCaretRight()
{
caretIndex = min((int)text.getString().getSize(), caretIndex + 1);
caretOffset = text.findCharacterPos(caretIndex) - text.getPosition();
blinkTimer.restart();
}
bool Chatbar::isFocused() const
{
return focused;
}
void Chatbar::processEvent(const sf::Event &event, Channel *channel)
{
if(!focused) return;
if(event.type == sf::Event::TextEntered)
{
if(event.text.unicode == 8) // backspace
removePreviousChar();
else if(event.text.unicode == 13) // enter
{
if(!getString().isEmpty())
{
if(sf::Keyboard::isKeyPressed(sf::Keyboard::Key::LShift) || sf::Keyboard::isKeyPressed(sf::Keyboard::Key::RShift))
{
addChar('\n');
}
else
{
auto chatbarMsgUtf8 = getString().toUtf8();
string msg;
msg.resize(chatbarMsgUtf8.size());
memcpy(&msg[0], chatbarMsgUtf8.data(), chatbarMsgUtf8.size());
channel->getMessageBoard().addMessage(new Message(channel->getLocalUser(), msg));
clear();
}
}
}
else if(event.text.unicode == 127) // delete
{
removeNextChar();
}
else
{
addChar(event.text.unicode);
}
}
else if(event.type == sf::Event::KeyPressed)
{
if(event.key.code == sf::Keyboard::Left)
moveCaretLeft();
else if(event.key.code == sf::Keyboard::Right)
moveCaretRight();
}
}
void Chatbar::draw(sf::RenderWindow &window)
{
auto windowSize = window.getSize();
sf::Vector2f backgroundSize(floor(windowSize.x * 0.7f), floor(text.getCharacterSize() * 1.7f + BOX_PADDING_Y * 2.0f));
sf::Vector2f backgroundPos(floor(windowSize.x * 0.5f - backgroundSize.x * 0.5f), floor(windowSize.y - backgroundSize.y - 20.0f));
background.setSize(backgroundSize);
background.setPosition(backgroundPos);
text.setPosition(floor(backgroundPos.x + BOX_PADDING_X), floor(backgroundPos.y + backgroundSize.y * 0.5f - text.getCharacterSize() * 0.5f));
window.draw(background);
window.draw(text);
int blinkElapsedTime = blinkTimer.getElapsedTime().asMilliseconds();
if(focused && blinkElapsedTime <= BLINK_TIME_VISIBLE_MS)
{
sf::RectangleShape caretShape(sf::Vector2f(2.0f, backgroundSize.y - BOX_PADDING_Y * 2.0f));
caretShape.setPosition(floor(text.getPosition().x + caretOffset.x), (caretOffset.y + backgroundPos.y + BOX_PADDING_Y));
window.draw(caretShape);
}
if(blinkElapsedTime > BLINK_TIME_VISIBLE_MS + BLINK_TIME_INVISIBLE_MS)
blinkTimer.restart();
}
}
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