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/*
* text_renderer.h
*
* Copyright (C) 2011 Tim Marston <tim@ed.am> and Dan Marston.
*
* This file is part of propeller-clock (hereafter referred to as "this
* program"). See http://ed.am/dev/software/arduino/propeller-clock for more
* information.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _TEXT_RENDERER_H_
#define _TEXT_RENDERER_H_
#include <PString.h>
#define MESSAGE_BUFFER_LEN 32
namespace TextRenderer
{
/**
* Initialise.
*/
void init();
/**
* Get the width, in pexels, of a message.
*
* @param message_len the length of the message
* @param scale taxt scaling factor
*/
int get_width( int message_len, int scale );
/**
* Draw a column of pixels at pixel-offset x in the message.
*
* @param message the message
* @param message_len the length of the message (to save it being
* calculated)
* @param x the pixel column of the message to draw
* @param y_flip true to draw up-side down
* @param y_shift shift the drawing up/down
* @param scale taxt scaling factor
*/
void render( const char *message, int message_len, int x,
bool y_flip, int y_shift, int scale );
/**
* Reset the output buffer.
*/
void reset_buffer();
/**
* Notify renderer that the output buffer will require rendering.
*/
void buffer_in_use();
/**
* Output the output buffer (and reset the output buffer).
*/
void output_buffer();
/**
* Get the font number in use.
*
* @return font number
*/
int get_font();
/**
* Switch to the next font.
*/
void inc_font();
};
#endif //_TEXT_RENDERER_H_
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