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#pragma once
#include "NetUtils.hpp"
#include <mglpp/system/FloatRect.hpp>
#include <mglpp/system/vec.hpp>
#include <mglpp/graphics/Color.hpp>
#include <mglpp/graphics/VertexBuffer.hpp>
#include <mglpp/graphics/Vertex.hpp>
#include <mglpp/system/Clock.hpp>
#include <vector>
#include <string_view>
#include <array>
#include "types.hpp"
#include <assert.h>
namespace mgl {
class Font;
class Event;
class Window;
}
namespace QuickMedia
{
struct TextElement
{
enum class Type {
TEXT,
IMAGE
};
enum class TextType {
LATIN,
CJK,
SYMBOL,
EMOJI
};
TextElement() {}
void create_text(std::string_view text) {
this->text = text;
text_type = TextType::LATIN;
type = Type::TEXT;
}
// If size is {0, 0} then the image is drawn at its original size
void create_image(std::string url, bool local, mgl::vec2i size) {
this->url = std::move(url);
this->local = local;
this->size = size;
type = Type::IMAGE;
}
// TODO: union grouped
std::string_view text;
TextType text_type = TextType::LATIN;
// TODO: Remove these
std::string url;
bool local = false;
mgl::vec2i pos;
mgl::vec2i size;
int vertex_ref_index = 0; // Note: only used temporary within updateGeometry
int text_num_bytes = 0; // Note: only used temporary within updateGeometry
Type type;
};
struct VertexRef {
int vertices_index; // index to |vertices| VertexArray
int index; // index within vertices[vertices_index]
int line;
int text_num_bytes;
uint32_t codepoint;
};
class Text
{
public:
Text(std::string str, bool bold_font, unsigned int characterSize, float maxWidth, bool highlight_urls = false);
Text(const Text &other);
Text& operator=(const Text&);
void setString(std::string str);
const std::string& getString() const;
void appendText(const std::string &str);
// size = {0, 0} = keep original image size
void append_image(const std::string &url, bool local, mgl::vec2i size);
static std::string formatted_image(const std::string &url, bool local, mgl::vec2i size);
static std::string formatted_text(const std::string &text, mgl::Color color, bool bold);
void insert_text_at_caret_position(const std::string &str);
void set_position(float x, float y);
void set_position(const mgl::vec2f &position);
mgl::vec2f get_position() const;
void setMaxWidth(float maxWidth);
float getMaxWidth() const;
void setCharacterSize(unsigned int characterSize);
unsigned int get_character_size() const;
void replace(size_t start_index, size_t length, const std::string &insert_str);
int getCaretIndex() const;
int getNumLines() const;
void set_color(mgl::Color color);
void setLineSpacing(float lineSpacing);
void setCharacterSpacing(float characterSpacing);
void setEditable(bool editable);
bool isEditable() const;
// Note: only call after initial updateGeometry or draw. TODO: Automatically do this internally
void moveCaretToEnd();
// Note: won't update until @draw is called
float getWidth() const;
// Note: won't update until @draw is called
float getHeight() const;
void processEvent(mgl::Window &window, const mgl::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.
// Returns true if text was drawn on screen (if text is within window borders)
bool draw(mgl::Window &target);
void updateGeometry(bool update_even_if_not_dirty = false);
bool single_line_edit = false;
private:
enum class CaretMoveDirection : u8
{
NONE,
UP,
DOWN,
HOME,
END,
LEFT,
RIGHT,
LEFT_WORD,
RIGHT_WORD
};
Text();
void updateCaret();
int getStartOfLine(int startIndex) const;
int getEndOfLine(int startIndex) const;
int getStartOfWord(int startIndex) const;
int getEndOfWord(int startIndex) const;
int getPreviousLineClosestPosition(int startIndex) const;
int getNextLineClosestPosition(int startIndex) const;
void split_text_by_type(std::vector<TextElement> &text_elements, const std::string &str);
float font_get_real_height(mgl::Font *font);
float get_text_quad_left_side(const VertexRef &vertex_ref) const;
float get_text_quad_right_side(const VertexRef &vertex_ref) const;
// If the index is past the end, then the caret offset is the right side of the last character, rather than the left side
float get_caret_offset_by_caret_index(int index) const;
VertexRef& get_vertex_ref_clamp(int index);
// Takes into consideration if index is the last vertex and the last vertex is a newline, then it should be on its own line
int get_vertex_line(int index) const;
uint32_t get_vertex_codepoint(int index) const;
size_t get_string_index_from_caret_index(size_t caret_index) const;
private:
std::string str; // TODO: Remove this for non-editable text??? also replace with std::string? then we get more efficient editing of text
bool bold_font;
unsigned int characterSize;
std::array<std::vector<mgl::Vertex>, 5> vertices;
std::array<mgl::VertexBuffer, 5> vertex_buffers;
float maxWidth;
mgl::vec2f position;
mgl::Color color;
bool dirty;
bool dirtyText;
bool dirtyCaret;
bool editable;
bool highlight_urls;
CaretMoveDirection caretMoveDirection;
mgl::FloatRect boundingBox;
int num_lines;
float lineSpacing;
float characterSpacing;
std::vector<TextElement> textElements;
int caretIndex;
float caret_offset_x;
mgl::vec2f caretPosition;
mgl::vec2u renderTarget_size;
std::vector<VertexRef> vertices_linear; // TODO: Use textElements instead
std::vector<Range> url_ranges;
};
}
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