view_promt.cpp

#include "view_promt.h"
 
void ViewPromt::draw()
{
    curs_set(1); // show cursor
 
    int li = text_offset_y;
    int ci = 0;
    for(std::string line : str_split(message + input, "\n"))
    {
        mvwprintw(win, ++li, text_offset_x, "%s", line.c_str());
        ci = line.length() + text_offset_x;
    }
 
    button_offset_x = (width - label_cancel.length() - sep.length() - label_confirm.length()) / 2;
    button_offset_y = height - text_offset_y;
 
    if(selection == 0)
    {
        wattron(win, A_REVERSE);
        mvwprintw(win, button_offset_y, button_offset_x, "%s", label_cancel.c_str());
        wattroff(win, A_REVERSE);
        mvwprintw(win, button_offset_y, button_offset_x + label_cancel.length(), "%s", sep.c_str());
        mvwprintw(win, button_offset_y, button_offset_x + label_cancel.length() + sep.length(), "%s", label_confirm.c_str());
    }
    else
    {
        mvwprintw(win, button_offset_y, button_offset_x, "%s", label_cancel.c_str());
        mvwprintw(win, button_offset_y, button_offset_x + label_cancel.length(), "%s", sep.c_str());
        wattron(win, A_REVERSE);
        mvwprintw(win, button_offset_y, button_offset_x + label_cancel.length() + sep.length(), "%s", label_confirm.c_str());
        wattroff(win, A_REVERSE);
    }
    wmove(win, li, ci);
}
 
void ViewPromt::setMessage(std::string message)
{
    this->message = message;
}
 
void ViewPromt::setConfirm(std::string name, std::function<void(int)> call)
{
    label_confirm = name;
    call_confirm = call;
}
 
void ViewPromt::setCancel(std::string name, bool cancelable)
{
    label_cancel = name;
    this->cancelable = cancelable;
}
 
std::string ViewPromt::getInput()
{
    return input;
}
 
std::function<void(int)> ViewPromt::keypress(int& key)
{
    std::function<void(int)> ret = nullptr;
    switch(key)
    {
    case KEY_BACKSPACE:
        if(input.length())
            input.pop_back();
        break;
    case '\t':
    case KEY_LEFT:
    case KEY_RIGHT:
        selection = (selection + 1 ) % 2;
        break;
    case KEY_MOUSE:
    {
        // http://pronix.linuxdelta.de/C/Linuxprogrammierung/Linuxsystemprogrammieren_C_Kurs_Kapitel10b.shtml
        MEVENT event;
        bool hit = false;
        if(getmouse(&event) == OK && event.bstate & (BUTTON1_CLICKED | BUTTON1_DOUBLE_CLICKED))
        {
            size_t column_start = start_x + button_offset_x;
            size_t row_start = start_y + button_offset_y;
            size_t mouse_x = event.x, mouse_y = event.y;
            if(mouse_y == row_start)
            {
                if(cancelable && mouse_x >= column_start && mouse_x < column_start + label_cancel.length())
                {
                    if(selection == 0 || event.bstate & BUTTON1_DOUBLE_CLICKED)
                        hit = true;
                    selection = 0;
                }
                if(mouse_x >= column_start + label_cancel.length() + sep.length() && mouse_x < column_start + label_cancel.length() + sep.length()  + label_confirm.length())
                {
                    if(selection == 1 || event.bstate & BUTTON1_DOUBLE_CLICKED)
                        hit = true;
                    selection = 1;
                }
            }
        }
        if(!hit)
            break;
 
        // fall through to next case
        [[fallthrough]];
    }
    case KEY_ENT:
        if(selection == 0) // exit
            key = -1; // do return from view
        else
            ret = call_confirm;
        break;
    default:
        break;
    }
 
    if(key >= ' ' && key <= '~')
        input += (char) key;
 
    if(key != KEY_ENT)
        repaint();
    return ret;
}