368 lines
13 KiB
C
368 lines
13 KiB
C
/****************************************************************************
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* include/nuttx/nx/nxterm.h
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*
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* Copyright (C) 2012 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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#ifndef __INCLUDE_NUTTX_NX_NXTERM_H
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#define __INCLUDE_NUTTX_NX_NXTERM_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <nuttx/nx/nx.h>
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#include <nuttx/nx/nxtk.h>
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#ifdef CONFIG_NXTERM
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/****************************************************************************
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* Pre-processor definitions
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****************************************************************************/
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/* Configuration ************************************************************/
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/* Nx Console prerequistes */
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#ifndef CONFIG_NX
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# warning "NX is not enabled (CONFIG_NX)
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#endif
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#ifndef CONFIG_NX_MULTIUSER
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# warning "NX Console requires multi-user support (CONFIG_NX_MULTIUSER)"
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#endif
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/* Nx Console configuration options:
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*
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* CONFIG_NXTERM
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* Enables building of the NxTerm driver.
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*
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* Output text/graphics options:
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*
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* CONFIG_NXTERM_BPP
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* Currently, NxTerm supports only a single pixel depth. This
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* configuration setting must be provided to support that single pixel depth.
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* Default: The smallest enabled pixel depth. (see CONFIG_NX_DISABLE_*BPP)
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* CONFIG_NXTERM_CURSORCHAR
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* The bitmap code to use as the cursor. Default '_'
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* CONFIG_NXTERM_MXCHARS
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* NxTerm needs to remember every character written to the console so
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* that it can redraw the window. This setting determines the size of some
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* internal memory allocations used to hold the character data. Default: 128.
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* CONFIG_NXTERM_CACHESIZE
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* NxTerm supports caching of rendered fonts. This font caching is required
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* for two reasons: (1) First, it improves text performance, but more
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* importantly (2) it preserves the font memory. Since the NX server runs on
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* a separate server thread, it requires that the rendered font memory persist
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* until the server has a chance to render the font. (NOTE: There is still
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* inherently a race condition in this!). Unfortunately, the font cache would
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* be quite large if all fonts were saved. The CONFIG_NXTERM_CACHESIZE setting
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* will control the size of the font cache (in number of glyphs). Only that
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* number of the most recently used glyphs will be retained. Default: 16.
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* CONFIG_NXTERM_LINESEPARATION
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* This the space (in rows) between each row of test. Default: 0
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* CONFIG_NXTERM_NOWRAP
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* By default, lines will wrap when the test reaches the right hand side
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* of the window. This setting can be defining to change this behavior so
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* that the text is simply truncated until a new line is encountered.
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*
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* Input options:
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*
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* CONFIG_NXTERM_NXKBDIN
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* Take input from the NX keyboard input callback. By default, keyboard
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* input is taken from stdin (/dev/console). If this option is set, then
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* the interface nxterm_kbdin() is enabled. That interface may be driven
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* by window callback functions so that keyboard input *only* goes to the
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* top window.
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* CONFIG_NXTERM_KBDBUFSIZE
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* If CONFIG_NXTERM_NXKBDIN is enabled, then this value may be used to
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* define the size of the per-window keyboard input buffer. Default: 16
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* CONFIG_NXTERM_NPOLLWAITERS
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* The number of threads that can be waiting for read data available.
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* Default: 4
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*/
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/* Cursor character */
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#ifndef CONFIG_NXTERM_CURSORCHAR
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# define CONFIG_NXTERM_CURSORCHAR '_'
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#endif
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/* The maximum number of characters that can be remembered */
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#ifndef CONFIG_NXTERM_MXCHARS
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# define CONFIG_NXTERM_MXCHARS 128
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#endif
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/* Font cache -- this is the number or pre-rendered font glyphs that can be
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* remembered.
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*/
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#ifndef CONFIG_NXTERM_CACHESIZE
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# define CONFIG_NXTERM_CACHESIZE 16
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#endif
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/* Pixel depth */
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#ifndef CONFIG_NXTERM_BPP
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# if !defined(CONFIG_NX_DISABLE_1BPP)
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# define CONFIG_NXTERM_BPP 1
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# elif !defined(CONFIG_NX_DISABLE_2BPP)
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# define CONFIG_NXTERM_BPP 2
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# elif !defined(CONFIG_NX_DISABLE_4BPP)
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# define CONFIG_NXTERM_BPP 4
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# elif !defined(CONFIG_NX_DISABLE_8BPP)
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# define CONFIG_NXTERM_BPP 8
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# elif !defined(CONFIG_NX_DISABLE_16BPP)
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# define CONFIG_NXTERM_BPP 16
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//#elif !defined(CONFIG_NX_DISABLE_24BPP)
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//# define CONFIG_NXTERM_BPP 24
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# elif !defined(CONFIG_NX_DISABLE_32BPP)
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# define CONFIG_NXTERM_BPP 32
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# else
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# error "No pixel depth provided"
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# endif
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#endif
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/* Space (in rows) between lines */
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#ifndef CONFIG_NXTERM_LINESEPARATION
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# define CONFIG_NXTERM_LINESEPARATION 0
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#endif
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/* Input options */
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#ifndef CONFIG_NX_KBD
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# undef CONFIG_NXTERM_NXKBDIN
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#endif
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#ifdef CONFIG_NXTERM_NXKBDIN
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# ifndef CONFIG_NXTERM_KBDBUFSIZE
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# define CONFIG_NXTERM_KBDBUFSIZE 16
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# elif (CONFIG_NXTERM_KBDBUFSIZE < 1) || (CONFIG_NXTERM_KBDBUFSIZE > 255)
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# error "CONFIG_NXTERM_KBDBUFSIZE is out of range (1-255)"
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# endif
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# ifndef CONFIG_NXTERM_NPOLLWAITERS
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# define CONFIG_NXTERM_NPOLLWAITERS 4
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# endif
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#else
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# undef CONFIG_NXTERM_KBDBUFSIZE
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# define CONFIG_NXTERM_KBDBUFSIZE 0
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# define CONFIG_NXTERM_NPOLLWAITERS 0
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#endif
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/****************************************************************************
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* Public Types
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****************************************************************************/
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/* This is the handle that can be used to access the consoles */
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typedef FAR void *NXTERM;
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/* This structure describes the window and font characteristics */
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struct nxterm_window_s
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{
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nxgl_mxpixel_t wcolor[CONFIG_NX_NPLANES]; /* Window background color */
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nxgl_mxpixel_t fcolor[CONFIG_NX_NPLANES]; /* Font color */
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struct nxgl_size_s wsize; /* Window size */
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int fontid; /* The ID of the font to use */
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};
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/****************************************************************************
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* Public Data
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****************************************************************************/
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#undef EXTERN
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#if defined(__cplusplus)
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# define EXTERN extern "C"
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extern "C"
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{
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#else
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# define EXTERN extern
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#endif
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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/****************************************************************************
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* Name: nx_register
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*
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* Description:
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* Register a console device on a raw NX window. The device will be
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* registered at /dev/nxtermN where N is the provided minor number.
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*
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* Input Parameters:
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* hwnd - A handle that will be used to access the window. The window must
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* persist and this handle must be valid for the life of the NX console.
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* wndo - Describes the window and font to be used. The information in
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* this structure is copied and the original need not persist after
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* nxtool_register() returns.
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* minor - The device minor number
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*
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* Return:
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* A non-NULL handle is returned on success.
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*
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****************************************************************************/
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NXTERM nx_register(NXWINDOW hwnd, FAR struct nxterm_window_s *wndo,
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int minor);
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/****************************************************************************
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* Name: nxtk_register
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*
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* Description:
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* Register a console device on a framed NX window. The device will be
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* registered at /dev/nxtermN where N is the provided minor number.
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*
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* Input Parameters:
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* hfwnd - A handle that will be used to access the window. The window must
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* persist and this handle must be valid for the life of the NX console.
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* wndo - Describes the window and font to be used. The information in
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* this structure is copied and the original need not persist after
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* nxtool_register() returns.
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* minor - The device minor number
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*
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* Return:
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* A non-NULL handle is returned on success.
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*
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****************************************************************************/
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NXTERM nxtk_register(NXTKWINDOW hfwnd, FAR struct nxterm_window_s *wndo,
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int minor);
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/****************************************************************************
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* Name: nxtool_register
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*
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* Description:
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* Register a console device on a toolbar of a framed NX window. The
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* device will be registered at /dev/nxtermN where N is the provided minor
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* number.
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*
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* Input Parameters:
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* hfwnd - A handle that will be used to access the toolbar. The toolbar
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* must persist and this handle must be valid for the life of the NX
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* console.
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* wndo - Describes the window and font to be used. The information in
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* this structure is copied and the original need not persist after
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* nxtool_register() returns.
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* minor - The device minor number
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*
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* Return:
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* A non-NULL handle is returned on success.
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*
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****************************************************************************/
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NXTERM nxtool_register(NXTKWINDOW hfwnd, FAR struct nxterm_window_s *wndo,
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int minor);
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/****************************************************************************
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* Name: nxterm_unregister
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*
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* Description:
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* Un-register to NX console device.
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*
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* Input Parameters:
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* handle - A handle previously returned by nx_register, nxtk_register, or
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* nxtool_register.
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*
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* Returned Value:
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* None
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*
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****************************************************************************/
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void nxterm_unregister(NXTERM handle);
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/****************************************************************************
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* Name: nxterm_redraw
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*
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* Description:
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* Re-draw a portion of the NX console. This function should be called
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* from the appropriate window callback logic.
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*
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* Input Parameters:
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* handle - A handle previously returned by nx_register, nxtk_register, or
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* nxtool_register.
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* rect - The rectangle that needs to be re-drawn (in window relative
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* coordinates)
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* more - true: More re-draw requests will follow
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*
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* Returned Value:
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* None
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*
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****************************************************************************/
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void nxterm_redraw(NXTERM handle, FAR const struct nxgl_rect_s *rect,
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bool more);
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/****************************************************************************
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* Name: nxterm_kbdin
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*
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* Description:
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* This function should be driven by the window kbdin callback function
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* (see nx.h). When the NxTerm is the top window and keyboard input is
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* received on the top window, that window callback should be directed to
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* this function. This function will buffer the keyboard data and make
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* it available to the NxTerm as stdin.
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*
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* If CONFIG_NXTERM_NXKBDIN is not selected, then the NxTerm will
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* receive its input from stdin (/dev/console). This works great but
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* cannot be shared between different windows. Chaos will ensue if you
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* try to support multiple NxTerm windows without CONFIG_NXTERM_NXKBDIN
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*
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* Input Parameters:
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* handle - A handle previously returned by nx_register, nxtk_register, or
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* nxtool_register.
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* buffer - The array of characters
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* buflen - The number of characters that are available in buffer[]
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*
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* Returned Value:
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* None
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*
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****************************************************************************/
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#ifdef CONFIG_NXTERM_NXKBDIN
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void nxterm_kbdin(NXTERM handle, FAR const uint8_t *buffer, uint8_t buflen);
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#endif
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#undef EXTERN
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#if defined(__cplusplus)
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}
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#endif
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#endif /* CONFIG_NXTERM */
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#endif /* __INCLUDE_NUTTX_NX_NXTERM_H */
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