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/*
ChibiOS/GFX - Copyright (C) 2012
Joel Bodenmann aka Tectu <joel@unormal.org>
This file is part of ChibiOS/GFX.
ChibiOS/GFX 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 3 of the License, or
(at your option) any later version.
ChibiOS/GFX 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @file include/gwin/console.h
* @brief GWIN Graphic window subsystem header file.
*
* @defgroup Console Console
* @ingroup GWIN
*
* @details GWIN allows it to create a console/terminal like window.
* You can simply use chprintf() to print to the terminal.
*
* @pre GFX_USE_GWIN must be set to TRUE in your gfxconf.h
* @pre GWIN_NEED_CONSOLE must be set to TRUE in your gfxconf.h
*
* @{
*/
#ifndef _GWIN_CONSOLE_H
#define _GWIN_CONSOLE_H
#if GWIN_NEED_CONSOLE || defined(__DOXYGEN__)
/*===========================================================================*/
/* Driver constants. */
/*===========================================================================*/
#define GW_CONSOLE 0x0001
/*===========================================================================*/
/* Type definitions */
/*===========================================================================*/
// A console window. Supports wrapped text writing and a cursor.
typedef struct GConsoleObject_t {
GWindowObject gwin;
struct GConsoleWindowStream_t {
const struct GConsoleWindowVMT_t *vmt;
_base_asynchronous_channel_data
} stream;
coord_t cx,cy; // Cursor position
uint8_t fy; // Current font height
uint8_t fp; // Current font inter-character spacing
} GConsoleObject;
/*===========================================================================*/
/* External declarations. */
/*===========================================================================*/
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief Create a console window.
* @details A console window allows text to be written using chprintf() (and the console functions defined here).
* @brief Text in a console window supports newlines and will wrap text as required.
* @return NULL if there is no resultant drawing area, otherwise a window handle.
*
* @param[in] gc The GConsoleObject structure to initialise. If this is NULL the structure is dynamically allocated.
* @param[in] x,y The screen co-ordinates for the bottom left corner of the window
* @param[in] width The width of the window
* @param[in] height The height of the window
* @param[in] font The font to use
* @note The console is not automatically cleared on creation. You must do that by calling gwinClear() (possibly after changing your background color)
* @note If the dispay does not support scrolling, the window will be cleared when the bottom line is reached.
* @note The default drawing color gets set to White and the background drawing color to Black.
* @note The dimensions and position may be changed to fit on the real screen.
*
* @api
*/
GHandle gwinCreateConsole(GConsoleObject *gc, coord_t x, coord_t y, coord_t width, coord_t height, font_t font);
/**
* @brief Get a stream from a console window suitable for use with chprintf().
* @return The stream handle or NULL if this is not a console window.
*
* @param[in] gh The window handle (must be a console window)
*
* @api
*/
BaseSequentialStream *gwinGetConsoleStream(GHandle gh);
/**
* @brief Put a character at the cursor position in the window.
* @note Uses the current foreground color to draw the character and fills the background using the background drawing color
*
* @param[in] gh The window handle (must be a console window)
* @param[in] c The character to draw
*
* @api
*/
void gwinPutChar(GHandle gh, char c);
/**
* @brief Put a string at the cursor position in the window. It will wrap lines as required.
* @note Uses the current foreground color to draw the string and fills the background using the background drawing color
*
* @param[in] gh The window handle (must be a console window)
* @param[in] str The string to draw
*
* @api
*/
void gwinPutString(GHandle gh, const char *str);
/**
* @brief Put the character array at the cursor position in the window. It will wrap lines as required.
* @note Uses the current foreground color to draw the string and fills the background using the background drawing color
*
* @param[in] gh The window handle (must be a console window)
* @param[in] str The string to draw
* @param[in] n The number of characters to draw
*
* @api
*/
void gwinPutCharArray(GHandle gh, const char *str, size_t n);
#ifdef __cplusplus
}
#endif
#endif /* GWIN_NEED_CONSOLE */
#endif /* _GWIN_CONSOLE_H */
/** @} */
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