borgware-2d/scrolltext/scrolltext3.c

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#define SCROLLTEXT_C
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#define _XOPEN_SOURCE 600
#include <stdlib.h>
#include <string.h>
#include <setjmp.h>
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#include <stdint.h>
#include "../config.h"
#include "scrolltext.h"
#include "../pixel.h"
#include "../util.h"
#include "font_arial8.h"
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// #include "font_small6.h"
// #include "font_uni53.h"
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#ifdef __CYGWIN__
#define strtok_r(a, b, c) strtok((a), (b))
#endif
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#define MAX_FONTS 1
font fonts[MAX_FONTS];
#define MAX_SPECIALCOLORS 3
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unsigned char PROGMEM colorTable[MAX_SPECIALCOLORS*NUM_ROWS] = {1, 1, 2, 3, 3, 2, 1, 1,
3, 3, 2, 1, 1, 2, 3, 3,
3, 3, 2, 2, 3, 3, 2, 2
};
char default_text[] PROGMEM = SCROLLTEXT_TEXT;
char scrolltext_text[SCROLLTEXT_BUFFER_SIZE];
/* Konzept
=======
Text wird in Token unterteilt, jeder Token bekommt einen Command-String.
z.B.
#b</#LABOR
Es werden die Zeiger aus dem Eingabestring direkt übernommen, mit Stringlen.
Wenn der Command abgearbeitet ist wird automatisch das nächste Token eingelesen.
*/
unsigned char (*text_pixmap)[NUM_ROWS][LINEBYTES];
void text_setpixel(pixel p, unsigned char value ){
if(value){
(*text_pixmap)[p.y%NUM_ROWS][p.x/8] |= shl_table[p.x%8];
}
}
void clear_text_pixmap(unsigned char value){
unsigned char y, z;
for(y=0;y<NUM_ROWS;y++){
for(z=0;z<LINEBYTES;z++){
(*text_pixmap)[y][z] = 0;
}
}
}
void update_pixmap(){
unsigned char x, y, z;
for(x=0;x<NUMPLANE;x++){
for(y=0;y<NUM_ROWS;y++){
for(z=0;z<LINEBYTES;z++){
pixmap[x][y][z] = (*text_pixmap)[y][z];
}
}
}
}
enum waitfor_e{
wait_new,
wait_posy,
wait_posx,
wait_out,
wait_timer,
wait_col_l,
wait_col_r
};
#define DIRECTION_RIGHT 0x01
#define DIRECTION_DOWN 0x02
struct blob_t_struct;
typedef struct blob_t_struct{
struct blob_t_struct * next, * last;
char *str;
char *commands;
enum waitfor_e waitfor;
int sizex;
char sizey;
int posx;
char posy;
int tox;
char toy;
unsigned char delayx, delayx_rld;
unsigned char delayy, delayy_rld;
unsigned char delayb, delayb_rld;
unsigned char visible;
unsigned char direction;
unsigned int timer;
const unsigned int* fontIndex;
const unsigned char* fontData;
unsigned char font_storebytes;/*bytes per char*/
unsigned char space;
#ifndef AVR
char scrolltextBuffer[SCROLLTEXT_BUFFER_SIZE];
#endif
}blob_t;
/*
void showBlob(blob_t * blob){
unsigned char * str = blob->str;
unsigned char tmp[200], x=0;
while(*str){
tmp[x++] = (*str++) + ' ' -1;
}
tmp[x] = 0;
printf("this:\t%x\n",blob);
printf("last:\t%x\n",blob->last);
printf("next:\t%x\n",blob->next);
printf("str:\t%s\n",tmp);
printf("cmd:\t%s\n",blob->commands);
printf("sizex\t%d\n",blob->sizex);
printf("posx\t%d\n",blob->posx);
printf("posy\t%d\n",blob->posy);
printf("tox\t%d\n",blob->tox);
printf("toy\t%d\n",blob->toy);
printf("delayy_rld\t%d\n",blob->delayx_rld);
printf("delayx_rld\t%d\n",blob->delayy_rld);
printf("timer\t%d\n",blob->timer);
printf("\n");
}
*/
#define PW(a) pgm_read_word(&(a))
#define PB(a) pgm_read_byte(&(a))
unsigned int getLen(blob_t *blob) {
unsigned char glyph;
unsigned int strLen = 0;
unsigned char * str = (unsigned char*)blob->str;
uint8_t space = blob->space * blob->font_storebytes;
while ((glyph = *str++)) {
glyph -= 1;
strLen += PW(blob->fontIndex[glyph+1]) - PW(blob->fontIndex[glyph]);
strLen += space;
}
return strLen/blob->font_storebytes;
}
unsigned int getnum(blob_t * blob){
unsigned int num=0;
unsigned char gotnum = 0;
while( (*blob->commands >= '0') && (*blob->commands <='9') ){
gotnum = 1;
num *= 10;
num += *blob->commands - '0';
blob->commands++;
}
if(gotnum){
return num;
}else{
return 0xffff;
}
}
unsigned char blobNextCommand(blob_t * blob){
unsigned int tmp;
unsigned char retval = 0;
while(*blob->commands != 0){
switch (*blob->commands++){
case '<':
blob->direction &= ~DIRECTION_RIGHT;
if((tmp = getnum(blob)) != 0xFFFF){
blob->delayx_rld = tmp;
}else{
blob->delayx_rld = SCROLL_X_SPEED;
}
blob->delayx = blob->delayx_rld;
break;
case '>':
blob->direction |= DIRECTION_RIGHT;
if((tmp = getnum(blob)) != 0xFFFF){
blob->delayx_rld = tmp;
}else{
blob->delayx_rld = SCROLL_X_SPEED;
}
blob->delayx = blob->delayx_rld;
break;
case 'd':
blob->direction |= DIRECTION_DOWN;
if((tmp = getnum(blob)) != 0xFFFF){
blob->delayy_rld = tmp;
}else{
blob->delayy_rld = SCROLL_Y_SPEED;
}
blob->delayy = blob->delayy_rld;
break;
case 'u':
blob->direction &= ~DIRECTION_DOWN;
if((tmp = getnum(blob)) != 0xFFFF){
blob->delayy_rld = tmp;
}else{
blob->delayy_rld = SCROLL_Y_SPEED;
}
blob->delayy = blob->delayy_rld;
break;
case 'x'://Place string at this x Position
if((tmp = getnum(blob)) != 0xFFFF){
blob->posx = tmp;
}else{
blob->posx = NUM_COLS/2 + blob->sizex/2;
}
break;
case 'y'://Place string at this y Position
if((tmp = getnum(blob)) != 0xFFFF){
blob->posy = tmp - blob->sizey;
}
break;
case 'b'://blink blob
if((tmp = getnum(blob)) != 0xFFFF){
blob->delayb_rld = tmp;
}else{
blob->delayb_rld = 50;
}
blob->delayb = blob->delayb_rld;
break;
case '|':
if((tmp = getnum(blob)) != 0xFFFF){
blob->tox = tmp;
}else{
blob->tox = (NUM_COLS - 2 + blob->sizex)/2;
}
blob->waitfor = wait_posx;
return retval;
break;
case '-':
if((tmp = getnum(blob)) != 0xFFFF){
blob->toy = tmp;
}else{
blob->toy = (NUM_ROWS-blob->sizey) / 2;
}
blob->waitfor = wait_posy;
return retval;
break;
case 'p':
blob->delayx_rld = 0;
blob->delayy_rld = 0;
if((tmp = getnum(blob)) != 0xFFFF){
blob->timer = tmp*64;
}else{
blob->timer = 30*64;
}
blob->waitfor = wait_timer;
return retval;
break;
case '/':
blob->waitfor = wait_out;
return retval;
break;
case ';':
blob->waitfor = wait_col_l;
return (retval);
break;
case ':':
blob->waitfor = wait_col_r;
return (retval);
break;
case '+':
retval = 2;
break;
}
}
return 1;//this blob is finished, and can be deleted.
}
blob_t * setupBlob(char * str){
static unsigned char chop_cnt;
static char *last; static char delim[] = "#";
static char *lastcommands;
unsigned int tmp;
blob_t *blob = malloc(sizeof (blob_t));
if(str){
#ifndef AVR
// on non-AVR archs strtok_r fails for some reason if it operates on a
// string which is located on another stack frame, so we need our own copy
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memcpy (blob->scrolltextBuffer, str, SCROLLTEXT_BUFFER_SIZE);
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str = blob->scrolltextBuffer;
#endif
chop_cnt = 0;
}
if(!chop_cnt){
blob->commands = strtok_r (str, delim, &last);
if( blob->commands == 0) goto fail;
if((tmp = getnum(blob)) != 0xFFFF){
chop_cnt = tmp;
lastcommands = blob->commands;
}
}
if(chop_cnt){
chop_cnt--;
blob->commands = lastcommands;
}
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blob->str = strtok_r (NULL, delim, &last);
if ( blob->str == 0) goto fail;
blob->fontIndex = fonts[0].fontIndex;
blob->fontData = fonts[0].fontData;
blob->font_storebytes = fonts[0].storebytes;
unsigned char tmp1, *strg = (unsigned char*)blob->str;
unsigned char glyph_beg = fonts[0].glyph_beg;
unsigned char glyph_end = fonts[0].glyph_end;
//translate the string: subtract 1 to get offset in Table
while((tmp1 = *strg)){
if((tmp1>=glyph_beg) && (tmp1<glyph_end)){
*strg = 1 + tmp1 - glyph_beg;
}else{
*strg = 1;
}
strg++;
}
blob->space = 1;
blob->sizey = fonts[0].fontHeight;
blob->sizex = getLen(blob);
if(*blob->commands == '<'){
blob->posx = 0;
blob->posy = (NUM_ROWS-blob->sizey)/2;
}else if(*blob->commands == '>'){
blob->posx = NUM_COLS+blob->sizex;
blob->posy = (NUM_ROWS-blob->sizey)/2;
}else if(*blob->commands == 'd'){
blob->posy = -blob->sizey;
blob->posx = (NUM_COLS - 2 + blob->sizex)/2;
}else if(*blob->commands == 'u'){
blob->posy = blob->sizey;
blob->posx = (NUM_COLS - 2 + blob->sizex)/2;
}else if(*blob->commands == 'x'){
blob->posy = (NUM_ROWS-blob->sizey)/2;
}else if(*blob->commands == 'y'){
blob->posx = (NUM_COLS - 2 + blob->sizex)/2;
}
blob->delayx_rld = 0;
blob->delayy_rld = 0;
blob->delayb_rld = 0;
blob->waitfor = wait_new;
return blob;
fail:
free(blob);
return 0;//no more blobs to parse
}
unsigned char updateBlob(blob_t * blob){
if(blob->delayx_rld && (!(blob->delayx--))){
blob->delayx = blob->delayx_rld;
(blob->direction & DIRECTION_RIGHT)?blob->posx--:blob->posx++;
}
if(blob->delayy_rld && (!(blob->delayy--))){
blob->delayy = blob->delayy_rld;
(blob->direction & DIRECTION_DOWN)?blob->posy++:blob->posy--;
}
if(blob->delayb_rld){
if(!(blob->delayb--)){
blob->delayb = blob->delayb_rld;
blob->visible ^= 1;
}
}else{
blob->visible = 1;
}
unsigned char done=0;
switch (blob->waitfor){
case wait_posy:
if (blob->posy == blob->toy)done = 1;
break;
case wait_posx:
if (blob->posx == blob->tox)done = 1;
break;
case wait_out:
if((blob->posx - blob->sizex) > NUM_COLS || blob->posx < 0) done = 1;
if((blob->posy) > NUM_ROWS || (blob->posy + blob->sizey) <0 ) done = 1;
break;
case wait_timer:
if(0 == blob->timer--){
done = 1;
}
break;
case wait_col_l:
if(blob->last){
if((blob->last->posx - blob->last->sizex) == blob->posx){
done=1;
}
}else{
done = 1;
}
break;
case wait_col_r:
if(blob->next){
if(blob->next->posx == (blob->posx - blob->sizex)){
done=1;
}
}else{
done = 1;
}
break;
default:
done = 1;
break;
}
if(done){
return (blobNextCommand(blob));
}
return 0;
}
void drawBlob(blob_t *blob) {
char x, y;
unsigned char byte=0, glyph, storebytes;
unsigned int charPos, charEnd;
unsigned int posx; unsigned char posy, toy;
if(!blob->visible) return;
unsigned char * str = (unsigned char*)blob->str;
posx = blob->posx;
posy = blob->posy;
toy = posy + blob->sizey;
storebytes = blob->font_storebytes;
glyph = (*blob->str)-1;
charPos = PW(blob->fontIndex[glyph]);
charEnd = PW(blob->fontIndex[glyph+1]);
while (posx >= NUM_COLS) {
charPos += storebytes;
if (charPos < charEnd) {
posx--;
}else{
posx -= blob->space + 1;
if (!(glyph = *++str)) return;
glyph -= 1;
charPos = PW(blob->fontIndex[glyph]);
charEnd = PW(blob->fontIndex[glyph+1]);
}
}
for (x = posx; x >= 0; x-- ) {
unsigned char mask = 0;
unsigned int datpos;
datpos = charPos;
for (y = posy; (y < NUM_ROWS) && (y < toy); y++) {
if((mask<<=1) == 0){
mask = 0x01;
byte = PB(blob->fontData[datpos++]);
}
if ((byte & mask) && y >= 0 ) {
text_setpixel((pixel){x, y},1);
}
}
charPos += storebytes;
if (charPos < charEnd) {
}else{
x -= blob->space;
if (!(glyph = *++str)) return;
glyph -= 1;
charPos = PW(blob->fontIndex[glyph]);
charEnd = PW(blob->fontIndex[glyph+1]);
}
}
}
extern jmp_buf newmode_jmpbuf;
void scrolltext(char *str) {
jmp_buf tmp_jmpbuf;
char tmp_str[SCROLLTEXT_BUFFER_SIZE];
int ljmp_retval;
fonts[0] = SCROLLTEXT_FONT;
text_pixmap = malloc(NUM_ROWS * LINEBYTES);
if(scrolltext_text[0] == 0){
strcpy_P(scrolltext_text, default_text);
}
memcpy(tmp_str, str, SCROLLTEXT_BUFFER_SIZE);
blob_t *startblob=0, *aktblob, *nextblob=0;
memcpy (tmp_jmpbuf, newmode_jmpbuf, sizeof(jmp_buf));
if((ljmp_retval = setjmp(newmode_jmpbuf))){
while(startblob){
aktblob = startblob;
startblob = aktblob->next;
free(aktblob);
}
free(text_pixmap);
memcpy (newmode_jmpbuf, tmp_jmpbuf, sizeof(jmp_buf));
longjmp(newmode_jmpbuf, ljmp_retval);
}
if (!(startblob = setupBlob(tmp_str))){
goto exit;
}
unsigned char retval;
do{
startblob->next = 0;
startblob->last = 0;
while(startblob){
aktblob = startblob;
while(aktblob){
retval = updateBlob(aktblob);
if(!retval){
nextblob = aktblob->next;
}else if(retval == 1){
if(aktblob == startblob){
startblob = aktblob->next;
}else{
aktblob->last->next = aktblob->next;
}
if(aktblob->next){
aktblob->next->last = aktblob->last;
}
nextblob = aktblob->next;
free(aktblob);
}else if(retval == 2){
blob_t * newblob = setupBlob(0);
if (newblob){
newblob->last = aktblob;
newblob->next = aktblob->next;
if(aktblob->next){
aktblob->next->last = newblob;
}
aktblob->next = newblob;
}
nextblob = aktblob->next;
}
aktblob = nextblob;
}
aktblob = startblob;
clear_text_pixmap(0);
while(aktblob){
drawBlob(aktblob);
aktblob = aktblob->next;
}
update_pixmap();
wait(2);
};
startblob = setupBlob(0);
//showBlob(startblob);
}while(startblob);
exit:
free(text_pixmap);
memcpy (newmode_jmpbuf, tmp_jmpbuf, sizeof(jmp_buf));
}