src/window.cpp

/***************************************************************************
                                 window.cpp
                             -------------------
    begin                : Thu Nov 25 2003
    copyright            : (C) 2003 - 2007 by Roland Riegel
    email                : feedback@roland-riegel.de
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/

#include "window.h"
#include <curses.h>

class Form;

Window::Window()
 : m_visible(false), m_window(0)
{
}

Window::~Window()
{
	hide();
}

// create window and display it
void Window::show(int x, int y, int width, int height)
{
	if(m_window)
		return;
	
	m_window = newwin(height, width, y, x);
	clear();
	refresh();
	
	m_visible = true;
}

// hide window and destroy it
void Window::hide()
{
	if(! m_window)
		return;
	
	clear();
	refresh();
	delwin(m_window);
	
	m_window = 0;
	
	m_visible = false;
}

// is the window currently visible?
bool Window::visible()
{
	return m_visible;
}

// refresh window
void Window::refresh()
{
	if(m_window)
		wrefresh(m_window);
}

// clear the content of the window
void Window::clear()
{
	if(m_window)
		wclear(m_window);
}

// move and resize window
void Window::resize(int x, int y, int width, int height)
{
	if(! m_window)
		return;
	wresize(m_window, height, width);
	mvwin(m_window, y, x);
}

// return current window width
int Window::width()
{
	if(! m_window)
		return 0;
	int width, height;
	getmaxyx(m_window, height, width);
	return width;
}

// return current window height
int Window::height()
{
	if(! m_window)
		return 0;
	int width, height;
	getmaxyx(m_window, height, width);
	return height;
}

// return current distance to left screen edge
int Window::left()
{
	if(! m_window)
		return 0;
	int x, y;
	getbegyx(m_window, y, x);
	return x;
}

// return current distance to top screen edge
int Window::top()
{
	if(! m_window)
		return 0;
	int x, y;
	getbegyx(m_window, y, x);
	return y;
}

// return current cursor position on the x-axis
int Window::x()
{
	if(! m_window)
		return 0;
	int x, y;
	getyx(m_window, y, x);
	return x;
}

// return current cursor position on the y-axis
int Window::y()
{
	if(! m_window)
		return 0;
	int x, y;
	getyx(m_window, y, x);
	return y;
}

// set current cursor x position
void Window::setX(int new_x)
{
	if(! m_window)
		return;
	wmove(m_window, y(), new_x);
}

// set current cursor y position
void Window::setY(int new_y)
{
	if(! m_window)
		return;
	wmove(m_window, new_y, x());
}

// set current cursor position
void Window::setXY(int new_x, int new_y)
{
	setX(new_x);
	setY(new_y);
}

// print some text to the window
void Window::print(const char* text, int new_x, int new_y)
{
	if(! m_window)
		return;
	if(new_x <= -1)
		new_x = x();
	if(new_y <= -1)
		new_y = y();
	
	mvwaddstr(m_window, new_y, new_x, text);
}

// print a char to the window
void Window::print(char text, int new_x, int new_y)
{
	if(! m_window)
		return;
	if(new_x <= -1)
		new_x = x();
	if(new_y <= -1)
		new_y = y();
	
	mvwaddch(m_window, new_y, new_x, text);
}

SubWindow::SubWindow(Window* parent)
 : Window(), m_parent(parent)
{
}

SubWindow::~SubWindow()
{
	hide();
}

// return parent window
Window* SubWindow::parent()
{
	return m_parent;
}

// create window and display it
void SubWindow::show(int x, int y, int width, int height)
{
	if(m_window)
		return;
	
	m_window = derwin(m_parent -> m_window, height, width, y, x);
	clear();
	refresh();
	
	m_visible = true;
}