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clear the end of lines when shifting down

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This commit is contained in:
Thomas Saunders 2012-06-23 23:04:35 +01:00
parent 5c7d3819be
commit 23a3bf0efa
2 changed files with 14 additions and 21 deletions
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26
console.c
View file

@ -78,13 +78,9 @@ msg_t lcdConsoleInit(GLCDConsole *console, uint16_t x0, uint16_t y0, uint16_t x1
uint16_t x,y;
console->vmt = &vmt;
/* read font, get size */
/* TODO: this is messy. improve font handling.
* this assumes that all characters are as wide as A */
/* read font, get height */
console->fy = font[FONT_TABLE_HEIGHT_IDX];
chi = *(uint16_t*)(&font[FONT_TABLE_CHAR_LOOKUP_IDX + ('A'-0x20)*2]);
ptr = font + chi;
console->fx = *(ptr++);
/* calculate the size of the console in characters */
console->sx = (x1-x0);
@ -104,7 +100,6 @@ msg_t lcdConsoleInit(GLCDConsole *console, uint16_t x0, uint16_t y0, uint16_t x1
console->color = color;
console->font = font;
console->full = FALSE;
}
msg_t lcdConsoleUpdate(GLCDConsole *console) {
@ -112,15 +107,11 @@ msg_t lcdConsoleUpdate(GLCDConsole *console) {
}
msg_t lcdConsolePut(GLCDConsole *console, char c) {
uint8_t width = console->fx;
uint16_t i;
uint16_t s = console->wptr;
uint8_t width;
bool_t redraw = FALSE;
if(console->full) {
return RDY_RESET;
}
/* write character to current position in buffer and update wptr */
console->buf[console->wptr] = c;
@ -137,22 +128,25 @@ msg_t lcdConsolePut(GLCDConsole *console, char c) {
* checks to see if this is out of range will be performed at the start of that character
*/
do {
width = lcdMeasureChar(console->buf[s]);
if(console->buf[s] == '\n') {
/* clear the text at the end of the line */
if(console->cx < console->sx)
lcdDrawRect(console->cx, console->cy, console->sx, console->cy + console->fy,
1, console->bkcolor);
console->cx = 0;
console->cy += console->fy;
} else if(console->buf[s] == '\r') {
/* TODO: work backwards through the buffer to the start of the current line */
//console->cx = 0;
} else {
if(console->cx >= console->sx) {
if((console->cx + width) >= console->sx) {
console->cx = 0;
console->cy += console->fy;
}
if((console->cy + console->fy) >= console->sy) {
/* we've gone beyond the end of the console */
//console->full = TRUE;
//return RDY_RESET;
/* start at beginning of buffer and remove the first line */
/* increment s from bstrt until it has been incremented more than
@ -164,7 +158,7 @@ msg_t lcdConsolePut(GLCDConsole *console, char c) {
s++;
/* TODO: increment based on the width of the character at s */
/* TODO: this doesn't handle carriage return */
console->cx += width;
console->cx += lcdMeasureChar(console->buf[s % console->blen]);
}
/* update bstrt to the new start point of the console */

9
console.h
View file

@ -38,18 +38,17 @@ struct GLCDConsole {
/* font */
const uint8_t *font;
/* lcd area to use */
uint16_t x0,y0,x1,y1;
/* current cursor position, in character coordinates (not pixels) */
uint16_t x0,y0;
/* current cursor position, in pixels */
uint16_t cx,cy;
/* console size in characters */
/* console size in pixels */
uint16_t sx,sy;
/* foreground and background colour */
uint16_t bkcolor, color;
/* font size in pixels */
uint8_t fx,fy;
uint8_t fy;
/* buffer index */
uint16_t wptr, blen, bstrt;
bool_t full;
};
#ifdef __cplusplus