CScreen.cpp

/*
 * (c) Cranium, aka Череп. 2014
 * GNU GPL
 *
 */

#include "CScreen.h"

#include <conio.h>

const char *msgs[] = {
    "",
    "Failed GetStdHandle(): INVALID_HANDLE_VALUE",
    "Failed GetConsoleCursorInfo()",
    "Failed SetConsoleCursorInfo()",
    "Failed SetConsoleCursorPosition()"
};

const char *CSScreenException::what() {
    return msgs[err];
}

CScreen::CScreen() {
    hConsoleOutput = GetStdHandle(STD_OUTPUT_HANDLE);
    if (hConsoleOutput == INVALID_HANDLE_VALUE)
        throw CSScreenException(1);    // "INVALID_HANDLE_VALUE"

    if (!GetConsoleCursorInfo(hConsoleOutput, &oldCursorInfo))
        throw CSScreenException(2);
    curCursorInfo.dwSize = oldCursorInfo.dwSize;
    curCursorInfo.bVisible = oldCursorInfo.bVisible;

    CONSOLE_SCREEN_BUFFER_INFO csbi;
    GetConsoleScreenBufferInfo(hConsoleOutput, &csbi);
    oldTextAttr = csbi.wAttributes;
}

CScreen::~CScreen() {
    SetConsoleCursorInfo(hConsoleOutput, &oldCursorInfo);
    SetConsoleTextAttribute(hConsoleOutput, oldTextAttr);
}

void CScreen::cursor_show(bool visible) {
    curCursorInfo.bVisible = visible;
    if (!SetConsoleCursorInfo(hConsoleOutput, &curCursorInfo))
        throw CSScreenException(3);
}

void CScreen::text_attr(WORD attr) {
    SetConsoleTextAttribute(hConsoleOutput, attr);
}

void CScreen::pos(int x, int y, char ch) {
    COORD point;
    point.X = static_cast<SHORT>(x);
    point.Y = static_cast<SHORT>(y);
    if (!SetConsoleCursorPosition(hConsoleOutput, point))
        throw CSScreenException(4);
    if (ch > 0)
        _putch(ch);
}

void CScreen::pos_str(int x, int y, const char *str) {
    pos(x, y);
    _cprintf("%s", str);
}

void CScreen::cls() {
    system("cls");
}