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