EKeyboard.hpp

#include "Element.hpp"
#include "TextElement.hpp"
#pragma once
 
#define KEYCODE_COUNT 47
 
class EKeyboard : public Element
{
public:
    EKeyboard();
    EKeyboard(std::function<void(char)> typeAction);
    ~EKeyboard();
    void render(Element* parent);
    bool process(InputEvents* event);
 
    // setup field variables
    void updateSize();
    void just_type(const char input);
    bool listenForPhysicalKeys(InputEvents* e);
 
    // get text input on the keyboard so far
    // (only stored when storeOwnText is true (default true for empty constructor, false for callback constructor))
    const std::string& getTextInput();
    std::string textInput;
 
    // a function to be invoked when we receive a key press, which takes in the char
    // that's been pressed
    std::function<void(char)> typeAction = NULL;
 
    // information representing a default qwerty EKeyboard, lower and upper
    // alongside default EKeyboards will also be: tab, caps lock, return, delete, and shifts
    const char* lower_keys = "`1234567890-=qwertyuiop[]\\asdfghjkl;'zxcvbnm,./";
    const char* upper_keys = "~!@#$\%^&*()_+QWERTYUIOP{}|ASDFGHJKL:\"ZXCVBNM<>?";
    int breaks[4] = { 13, 13, 11, 10 };
 
    // the rest of the keys will be dynamically drawn by going through hex iterations
    // these EKeyboards will fill the extra space with more characters
 
    std::vector<std::string*> rows;
 
    const CST_Keycode usbKeys[KEYCODE_COUNT] = {
        SDLK_BACKQUOTE, SDLK_1, SDLK_2, SDLK_3, SDLK_4, SDLK_5, SDLK_6, SDLK_7, SDLK_8, SDLK_9, SDLK_0, SDLK_MINUS, SDLK_EQUALS,
         SDLK_q, SDLK_w, SDLK_e, SDLK_r, SDLK_t, SDLK_y, SDLK_u, SDLK_i, SDLK_o, SDLK_p, SDLK_LEFTBRACKET, SDLK_RIGHTBRACKET, SDLK_BACKSLASH,
          SDLK_a, SDLK_s, SDLK_d, SDLK_f, SDLK_g, SDLK_h, SDLK_j, SDLK_k, SDLK_l, SDLK_SEMICOLON, SDLK_QUOTE,
           SDLK_z, SDLK_x, SDLK_c, SDLK_v, SDLK_b, SDLK_n, SDLK_m, SDLK_COMMA, SDLK_PERIOD, SDLK_SLASH
    };
 
    inline int rowCount() {
        return (int)rows.size();
    }
 
    inline int rowLength(int row) {
        return (int)rows[row]->size() / 2;
    }
 
    bool shiftOn = false;
    bool capsOn = false;
    int mode = 0; // the mode of which EKeyboard type we're on (first is special and has shift)
 
    // the currently selected row and index
    int curRow = -1;
    int index = -1;
 
    // the below variables are stored to be used in processing touch events
    // and rendering the drawings to screen
 
    // attributes of each key
    int keyWidth = 0;
    int padding = 0;
    int textSize = 0;
 
    // attributes of delete and backspace keys
    int dPos = 0;
    int dHeight = 0;
    int sPos = 0;
    int enterPos = 0;
    int enterHeight = 0;
    int dWidth = 0;
    int sWidth = 0;
    int enterWidth = 0;
 
    // positions of key location offset information
    int kXPad = 0;
    int kXOff = 0;
    int yYOff = 0;
    int kYPad = 0;
    int ySpacing = 0;
 
    // whether or not to use the rounded rectangle key style
    bool hasRoundedKeys = false;
    CST_Font* roundKeyFont = NULL;
 
    bool touchMode = false;
    bool immersiveMode = false; // no rendering, but still allow inputs
                                // if using a USB keyboard, they can hide the on-screen one
 
    bool preventEnterAndTab = false; // hide and don't allow enter/tab inputs
    bool storeOwnText = false; // whether or not this keyboard will store the text input on its own
 
    bool isTouchDrag = false; // set to true during a touchdrag
 
    void type(int y, int x);
    void generateEKeyboard();
    void backspace();
};