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Code Issues Releases Wiki Activity

check limits properly when displaying text

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¨Rene Richarz 2019-04-05 14:47:36 +02:00
parent 4e66efeb84
commit c29fdcbaf2
3 changed files with 52 additions and 28 deletions
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pltfiles/usmap.tek → pltfiles/usmap.plt
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tek4010
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80
tek4010.c
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@ -24,7 +24,7 @@
* *
*/ */
#define DEBUG 0 // print debug info #define DEBUG 0 // print debug info
#define DEBUGMAX 0 // exit after DEBUGMAX chars, 0 means no exit #define DEBUGMAX 0 // exit after DEBUGMAX chars, 0 means no exit
#define REFRESH_INTERVAL 30 // time in msec between refresh events #define REFRESH_INTERVAL 30 // time in msec between refresh events
@ -95,11 +95,11 @@ static long characterInterval = 0;
// mode 30 expecting escape sequence, escape code received // mode 30 expecting escape sequence, escape code received
// mode 31 received in ANSI escape sequence, escape sequence continues if next char is digit // mode 31 received in ANSI escape sequence, escape sequence continues if next char is digit
// //
// mode 40 incremental plot (4104); is ignored until exit from incremental plot received // mode 40 incremental plot mode; is ignored until exit from incremental plot received
// mode 50 special point plot mode; not yet implemented // mode 50 special point plot mode; not yet implemented
// mode 101 ignore until group separator, not yet implemented // mode 101 ignore until group separator, not yet implemented
static int mode; static int mode, savemode;
int leftmargin; int leftmargin;
@ -472,9 +472,10 @@ void tek4010_line_type(cairo_t *cr, cairo_t *cr2, enum LineType ln)
cairo_set_dash (cr2,&dashset[ndx],ndash,ofs); cairo_set_dash (cr2,&dashset[ndx],ndash,ofs);
} }
void drawVector(cairo_t *cr, cairo_t *cr2,int x0,int y0,int x2,int y2) void drawVector(cairo_t *cr, cairo_t *cr2)
{ {
if (DEBUG) printf("******************************************** Drawing to (%d,%d)\n",x2,y2); if (DEBUG) printf("******************************************** Drawing to (%d,%d)\n",x2,y2);
if ((x2 == x0) && (y2 == y0)) x0++; // cairo cannot draw a dot
if (writeThroughMode) { if (writeThroughMode) {
cairo_set_line_width (cr2, 1); cairo_set_line_width (cr2, 1);
cairo_set_source_rgb(cr2, 0.0, 1.0, 0.0); cairo_set_source_rgb(cr2, 0.0, 1.0, 0.0);
@ -528,6 +529,16 @@ int escapeCodeHandler(cairo_t *cr, cairo_t *cr2, int todo, int ch)
case '[': case '[':
// a second escape code follows, do not reset mode // a second escape code follows, do not reset mode
break; break;
case 14: // SO activate alternative char set, not implemented
case 15: // SI deactivate alternative char set
mode = 0;
break;
case 28: // file separator >> point plot mode
mode = 5;
plotPointMode= 1;
break;
// start of ignoring ANSI escape sequencies, could be improved (but the Tek4010 couldn't do this either!) // start of ignoring ANSI escape sequencies, could be improved (but the Tek4010 couldn't do this either!)
case '0': case '0':
@ -566,12 +577,30 @@ int escapeCodeHandler(cairo_t *cr, cairo_t *cr2, int todo, int ch)
case 'w': ltype = SOLID; writeThroughMode = 1; mode = 101; showCursor = 0; todo = 0; break; case 'w': ltype = SOLID; writeThroughMode = 1; mode = 101; showCursor = 0; todo = 0; break;
default: default:
printf("Escape code %02X not implemented\n",ch); printf("Escape code %02X not implemented, mode = %d\n",ch, savemode);
mode = 0; mode = 0;
break; break;
} }
return todo; return todo;
}
void checkLimits()
/* check whether char is in visibel space */
{
/* don't check here for leftmargin, graphics needs to write characters to the whole screen */
if (x0 < 0) x0 = 0;
if (x0 > windowWidth - hDotsPerChar) {
x0 = leftmargin; y0 -= vDotsPerChar;
}
if (y0 < 4) {
y0 = windowHeight - vDotsPerChar;
if (leftmargin) leftmargin = 0;
else leftmargin = windowWidth / 2;
/* check here for leftmargin */
if (x0 < leftmargin) x0 = leftmargin;
}
if (y0 > (windowHeight - vDotsPerChar)) y0 = windowHeight - vDotsPerChar;
} }
void tek4010_draw(cairo_t *cr, cairo_t *cr2, int first) void tek4010_draw(cairo_t *cr, cairo_t *cr2, int first)
@ -650,14 +679,20 @@ void tek4010_draw(cairo_t *cr, cairo_t *cr2, int first)
} }
if (mode == 31) { if (mode == 31) {
// printf("ANSI escape mode 31, ch=%02x\n",ch); printf("ANSI escape mode 31, ch=%02x\n",ch);
if ((ch>='0') && (ch<='9')) mode = 30; if ((ch>='0') && (ch<='9')) { savemode = mode; mode = 30; }
} }
if (ch == 27) { // escape code if (ch == 27) { // escape code
savemode = mode;
mode = 30; return; mode = 30; return;
} }
if (ch == 30) {
printf("Incremental plot mode not implemented\n");
mode = 40; return;
}
int tag = (ch >> 5) & 3; int tag = (ch >> 5) & 3;
if ((mode >= 1) && (mode <= 8)) { if ((mode >= 1) && (mode <= 8)) {
@ -677,10 +712,6 @@ void tek4010_draw(cairo_t *cr, cairo_t *cr2, int first)
mode = 1; mode = 1;
goto endDo; // goto end of do loop goto endDo; // goto end of do loop
} }
if (ch == 30) {
if (DEBUG) printf("Starting incremental plot mode (4014)\n");
mode = 40; return;
}
if (DEBUG) { if (DEBUG) {
if (mode & 1) if (mode & 1)
@ -828,7 +859,7 @@ void tek4010_draw(cairo_t *cr, cairo_t *cr2, int first)
else { else {
cairo_set_source_rgb(cr, 0, 0.7, 0); cairo_set_source_rgb(cr, 0, 0.7, 0);
drawVector(cr,cr2,x0,y0,x2,y2); drawVector(cr,cr2);
todo--; todo--;
} }
@ -843,7 +874,7 @@ void tek4010_draw(cairo_t *cr, cairo_t *cr2, int first)
case 30: case 30:
todo = escapeCodeHandler(cr, cr2, todo, ch); todo = escapeCodeHandler(cr, cr2, todo, ch);
break; break;
case 40: // used to ignore certain 4014 sequencies case 40: // incremental plot mode, wait for end mark
if (ch == 31) mode = 0; // leave this mode if (ch == 31) mode = 0; // leave this mode
break; break;
case 101: case 101:
@ -862,35 +893,28 @@ void tek4010_draw(cairo_t *cr, cairo_t *cr2, int first)
break; break;
case 8: // backspace case 8: // backspace
x0 -= hDotsPerChar; x0 -= hDotsPerChar;
if (x0<leftmargin) x0 = leftmargin; checkLimits();
break; break;
case 9: // tab case 9: // tab
if (argTab1) if (argTab1)
x0 += hDotsPerChar; x0 += hDotsPerChar;
else else
x0 = x0 - (x0 % (8 * hDotsPerChar)) + 8 * hDotsPerChar; x0 = x0 - (x0 % (8 * hDotsPerChar)) + 8 * hDotsPerChar;
checkLimits();
break; break;
case 10: // new line case 10: // new line
y0 -= vDotsPerChar; y0 -= vDotsPerChar;
if (y0 < 4) {
y0 = windowHeight - vDotsPerChar;
if (leftmargin) leftmargin = 0;
else leftmargin = windowWidth / 2;
}
if (!argRaw) x0 = leftmargin; if (!argRaw) x0 = leftmargin;
checkLimits();
break; break;
case 11: // VT, move one line up case 11: // VT, move one line up
y0 += vDotsPerChar; y0 += vDotsPerChar;
checkLimits();
break; break;
case 13: // return case 13: // return
mode = 0; x0 = leftmargin; mode = 0; x0 = leftmargin;
break; break;
// case 27: // escape case 28: // file separator >> point plot mode
// mode = 30;
// // printf("Starting escape mode\n");
// break;
case 28: // file separator
if (DEBUG) printf("Point plot mode\n");
mode = 5; mode = 5;
plotPointMode= 1; plotPointMode= 1;
break; break;
@ -904,11 +928,11 @@ void tek4010_draw(cairo_t *cr, cairo_t *cr2, int first)
mode = 0; mode = 0;
break; break;
default: if ((ch >= 32) && (ch <127)) { // printable character default: if ((ch >= 32) && (ch <127)) { // printable character
if (y0 < 8) y0 = 8; checkLimits();
s[0] = ch; s[0] = ch;
s[1] = 0; s[1] = 0;
if (writeThroughMode) { // draw the write-trough character if (writeThroughMode) { // draw the write-through character
cairo_set_source_rgb(cr2, 0, 0.7, 0); cairo_set_source_rgb(cr2, 0, 0.7, 0);
cairo_move_to(cr2, x0, windowHeight - y0 + 4); cairo_move_to(cr2, x0, windowHeight - y0 + 4);
cairo_show_text(cr2, s); cairo_show_text(cr2, s);