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#pragma once
#include "StringView.hpp"
#include "Cache.hpp"
#include <SFML/Graphics/VertexArray.hpp>
#include <SFML/Graphics/Font.hpp>
#include <SFML/Graphics/RenderTarget.hpp>
#include <SFML/Window/Event.hpp>
#include <SFML/System/String.hpp>
#include <vector>
namespace dchat
{
struct TextElement
{
enum class Type
{
TEXT,
EMOJI,
URL
};
TextElement() {}
TextElement(const StringViewUtf32 &_text, Type _type) : text(_text), type(_type), ownLine(false) {}
StringViewUtf32 text;
sf::Vector2f position;
Type type;
bool ownLine; // Currently only used for emoji, to make emoji bigger when it's the only thing on a line
};
class Text
{
public:
Text(const sf::Font *font);
Text(const sf::String &str, const sf::Font *font, unsigned int characterSize, float maxWidth, bool plainText = true);
void setString(const sf::String &str);
const sf::String& getString() const;
void setPosition(float x, float y);
void setPosition(const sf::Vector2f &position);
sf::Vector2f getPosition() const;
void setMaxWidth(float maxWidth);
float getMaxWidth() const;
void setCharacterSize(unsigned int characterSize);
unsigned int getCharacterSize() const;
const sf::Font* getFont() const;
void setFillColor(sf::Color color);
void setLineSpacing(float lineSpacing);
void setEditable(bool editable);
// Warning: won't update until @draw is called
float getHeight() const;
void processEvent(const sf::Event &event);
// Performs culling. @updateGeometry is called even if text is not visible if text is dirty, because updateGeometry might change the dimension of the text and make is visible
void draw(sf::RenderTarget &target, Cache &cache);
private:
enum class CaretMoveDirection : u8
{
NONE,
UP,
DOWN,
HOME,
END
};
void stringSplitElements(sf::String &stringToSplit, usize startIndex);
void updateGeometry();
void updateCaret();
bool isCaretAtEnd() const;
int getStartOfLine(int startIndex) const;
int getEndOfLine(int startIndex) const;
int getRowByPosition(const sf::Vector2f &position) const;
int getPreviousLineClosestPosition(int startIndex) const;
int getNextLineClosestPosition(int startIndex) const;
private:
sf::String str;
const sf::Font *font;
unsigned int characterSize;
sf::VertexArray vertices;
float maxWidth;
sf::Vector2f position;
sf::Color color;
sf::Color urlColor;
bool dirty;
bool dirtyText;
bool dirtyCaret;
bool plainText;
bool editable;
CaretMoveDirection caretMoveDirection;
sf::FloatRect boundingBox;
float lineSpacing;
std::vector<TextElement> textElements;
int caretIndex;
sf::Vector2f caretPosition;
};
}
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