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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/>.
*/
#if GDISP_NEED_CONSOLE
#include "ch.h"
#include "hal.h"
#include "console.h"
/**
* @extends BaseAsynchronousChannelVMT
*
* @brief @p GConsole virtual methods table.
*/
struct GConsoleVMT {
_base_asynchronous_channel_methods
};
/**
* @extends BaseAsynchronousChannel
*
* @brief GConsole class.
* @details This class extends @p BaseAsynchronousChannel by adding physical
* I/O queues.
*/
typedef struct _GConsole {
/** @brief Virtual Methods Table.*/
const struct GConsoleVMT *vmt;
_base_asynchronous_channel_data
/* WARNING: Do not add any data to this struct above this comment, only below */
/* font */
font_t font;
/* lcd area to use */
coord_t x0,y0;
/* current cursor position, in pixels */
coord_t cx,cy;
/* console size in pixels */
coord_t sx,sy;
/* foreground and background colour */
color_t bkcolor, color;
/* font size in pixels */
uint8_t fy;
/* font inter-character padding in pixels */
uint8_t fp;
} GConsole;
/*
* Interface implementation. The interface is write only
*/
static size_t writes(void *ip, const uint8_t *bp, size_t n) {
return lcdConsoleWrite((GConsole *)ip, bp, n);
}
static size_t reads(void *ip, uint8_t *bp, size_t n) {
(void)ip;
(void)bp;
(void)n;
return 0;
}
static msg_t put(void *ip) {
(void)ip;
return RDY_OK;
}
static msg_t get(void *ip) {
(void)ip;
return RDY_OK;
}
static msg_t putt(void *ip, uint8_t b, systime_t timeout) {
(void)timeout;
/* TODO: handle timeout */
return lcdConsolePut((GConsole *)ip, (char)b);
}
static msg_t gett(void *ip, systime_t timeout) {
(void)ip;
(void)timeout;
return RDY_OK;
}
static size_t writet(void *ip, const uint8_t *bp, size_t n, systime_t time) {
(void)time;
return lcdConsoleWrite((GConsole *)ip, bp, n);
}
static size_t readt(void *ip, uint8_t *bp, size_t n, systime_t time) {
(void)ip;
(void)bp;
(void)n;
(void)time;
return 0;
}
static ioflags_t getflags(void *ip) {
_ch_get_and_clear_flags_impl(ip);
}
static const struct GConsoleVMT vmt = {
writes, reads, put, get,
putt, gett, writet, readt,
getflags
};
msg_t lcdConsoleInit(GConsole *console, coord_t x0, coord_t y0, coord_t width, coord_t height, font_t font, pixel_t bkcolor, pixel_t color) {
console->vmt = &vmt;
/* read font, get height & padding */
console->fy = gdispGetFontMetric(font, fontHeight);
console->fp = gdispGetFontMetric(font, fontCharPadding);
/* calculate the size of the console as an integer multiple of characters height*/
console->sx = width;
console->sy = (((int16_t)(height/console->fy))-1)*console->fy;
console->cx = 0;
console->cy = 0;
console->x0 = x0;
console->y0 = y0;
console->bkcolor = bkcolor;
console->color = color;
console->font = font;
gdispFillArea(x0, y0, x0 + width, y0 + height, console->bkcolor);
return RDY_OK;
}
msg_t lcdConsolePut(GLCDConsole *console, char c) {
uint8_t width;
if(c == '\n') {
/* clear the text at the end of the line */
if(console->cx < console->sx)
gdispFillArea(console->x0 + console->cx, console->y0 + console->cy,
console->sx - console->cx, console->fy,
console->bkcolor);
console->cx = 0;
console->cy += console->fy;
} else if(c == '\r') {
/* TODO: work backwards through the buffer to the start of the current line */
//console->cx = 0;
} else {
width = gdispGetCharWidth(c, console->font) + console->fp;
if((console->cx + width) >= console->sx) {
/* clear the text at the end of the line */
if (console->cy <= console->sy)
gdispFillArea(console->x0 + console->cx, console->y0 + console->cy,
console->sx - (console->cx + width), console->fy,
console->bkcolor);
console->cx = 0;
console->cy += console->fy;
}
if((console->cy > console->sy)) {
#if GDISP_NEED_SCROLL
/* scroll the console */
gdispVerticalScroll(console->x0, console->y0, console->sx,
console->sy + console->fy, console->fy, console->bkcolor);
/* reset the cursor to the start of the line */
console->cx = 0;
console->cy = console->sy;
#else
/* clear the console */
gdispFillArea(console->x0, console->y0,
console->sx, console->sy + console->fy,
console->bkcolor);
/* reset the cursor to the top of the console */
console->cx = 0;
console->cy = 0;
#endif
}
gdispDrawChar(console->x0 + console->cx, console->y0 + console->cy, c,
console->font, console->color);
/* update cursor */
console->cx += width;
}
return RDY_OK;
}
msg_t lcdConsoleWrite(GLCDConsole *console, const uint8_t *bp, size_t n) {
size_t i;
for(i = 0; i < n; i++)
lcdConsolePut(console, bp[i]);
return RDY_OK;
}
#endif /* GDISP_NEED_CONSOLE */
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