mirror of
https://github.com/rricharz/Tek4010.git
synced 2026-01-11 23:53:16 +00:00
check limits properly when displaying text
This commit is contained in:
¨Rene Richarz
parent
4e66efeb84
commit
c29fdcbaf2
80
tek4010.c
80
tek4010.c
@ -24,7 +24,7 @@
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*
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*/
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#define DEBUG 0 // print debug info
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#define DEBUG 0 // print debug info
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#define DEBUGMAX 0 // exit after DEBUGMAX chars, 0 means no exit
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#define REFRESH_INTERVAL 30 // time in msec between refresh events
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@ -95,11 +95,11 @@ static long characterInterval = 0;
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// mode 30 expecting escape sequence, escape code received
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// mode 31 received in ANSI escape sequence, escape sequence continues if next char is digit
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//
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// mode 40 incremental plot (4104); is ignored until exit from incremental plot received
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// mode 40 incremental plot mode; is ignored until exit from incremental plot received
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// mode 50 special point plot mode; not yet implemented
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// mode 101 ignore until group separator, not yet implemented
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static int mode;
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static int mode, savemode;
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int leftmargin;
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@ -472,9 +472,10 @@ void tek4010_line_type(cairo_t *cr, cairo_t *cr2, enum LineType ln)
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cairo_set_dash (cr2,&dashset[ndx],ndash,ofs);
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}
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void drawVector(cairo_t *cr, cairo_t *cr2,int x0,int y0,int x2,int y2)
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void drawVector(cairo_t *cr, cairo_t *cr2)
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{
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if (DEBUG) printf("******************************************** Drawing to (%d,%d)\n",x2,y2);
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if ((x2 == x0) && (y2 == y0)) x0++; // cairo cannot draw a dot
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if (writeThroughMode) {
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cairo_set_line_width (cr2, 1);
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cairo_set_source_rgb(cr2, 0.0, 1.0, 0.0);
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@ -528,6 +529,16 @@ int escapeCodeHandler(cairo_t *cr, cairo_t *cr2, int todo, int ch)
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case '[':
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// a second escape code follows, do not reset mode
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break;
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case 14: // SO activate alternative char set, not implemented
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case 15: // SI deactivate alternative char set
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mode = 0;
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break;
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case 28: // file separator >> point plot mode
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mode = 5;
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plotPointMode= 1;
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break;
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// start of ignoring ANSI escape sequencies, could be improved (but the Tek4010 couldn't do this either!)
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case '0':
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@ -566,12 +577,30 @@ int escapeCodeHandler(cairo_t *cr, cairo_t *cr2, int todo, int ch)
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case 'w': ltype = SOLID; writeThroughMode = 1; mode = 101; showCursor = 0; todo = 0; break;
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default:
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printf("Escape code %02X not implemented\n",ch);
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printf("Escape code %02X not implemented, mode = %d\n",ch, savemode);
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mode = 0;
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break;
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}
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return todo;
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return todo;
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}
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void checkLimits()
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/* check whether char is in visibel space */
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{
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/* don't check here for leftmargin, graphics needs to write characters to the whole screen */
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if (x0 < 0) x0 = 0;
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if (x0 > windowWidth - hDotsPerChar) {
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x0 = leftmargin; y0 -= vDotsPerChar;
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}
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if (y0 < 4) {
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y0 = windowHeight - vDotsPerChar;
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if (leftmargin) leftmargin = 0;
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else leftmargin = windowWidth / 2;
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/* check here for leftmargin */
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if (x0 < leftmargin) x0 = leftmargin;
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}
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if (y0 > (windowHeight - vDotsPerChar)) y0 = windowHeight - vDotsPerChar;
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}
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void tek4010_draw(cairo_t *cr, cairo_t *cr2, int first)
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@ -650,14 +679,20 @@ void tek4010_draw(cairo_t *cr, cairo_t *cr2, int first)
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}
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if (mode == 31) {
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// printf("ANSI escape mode 31, ch=%02x\n",ch);
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if ((ch>='0') && (ch<='9')) mode = 30;
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printf("ANSI escape mode 31, ch=%02x\n",ch);
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if ((ch>='0') && (ch<='9')) { savemode = mode; mode = 30; }
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}
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if (ch == 27) { // escape code
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savemode = mode;
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mode = 30; return;
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}
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if (ch == 30) {
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printf("Incremental plot mode not implemented\n");
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mode = 40; return;
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}
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int tag = (ch >> 5) & 3;
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if ((mode >= 1) && (mode <= 8)) {
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@ -677,10 +712,6 @@ void tek4010_draw(cairo_t *cr, cairo_t *cr2, int first)
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mode = 1;
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goto endDo; // goto end of do loop
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}
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if (ch == 30) {
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if (DEBUG) printf("Starting incremental plot mode (4014)\n");
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mode = 40; return;
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}
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if (DEBUG) {
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if (mode & 1)
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@ -828,7 +859,7 @@ void tek4010_draw(cairo_t *cr, cairo_t *cr2, int first)
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else {
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cairo_set_source_rgb(cr, 0, 0.7, 0);
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drawVector(cr,cr2,x0,y0,x2,y2);
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drawVector(cr,cr2);
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todo--;
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}
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@ -843,7 +874,7 @@ void tek4010_draw(cairo_t *cr, cairo_t *cr2, int first)
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case 30:
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todo = escapeCodeHandler(cr, cr2, todo, ch);
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break;
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case 40: // used to ignore certain 4014 sequencies
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case 40: // incremental plot mode, wait for end mark
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if (ch == 31) mode = 0; // leave this mode
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break;
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case 101:
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@ -862,35 +893,28 @@ void tek4010_draw(cairo_t *cr, cairo_t *cr2, int first)
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break;
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case 8: // backspace
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x0 -= hDotsPerChar;
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if (x0<leftmargin) x0 = leftmargin;
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checkLimits();
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break;
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case 9: // tab
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if (argTab1)
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x0 += hDotsPerChar;
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else
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x0 = x0 - (x0 % (8 * hDotsPerChar)) + 8 * hDotsPerChar;
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checkLimits();
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break;
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case 10: // new line
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y0 -= vDotsPerChar;
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if (y0 < 4) {
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y0 = windowHeight - vDotsPerChar;
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if (leftmargin) leftmargin = 0;
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else leftmargin = windowWidth / 2;
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}
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if (!argRaw) x0 = leftmargin;
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checkLimits();
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break;
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case 11: // VT, move one line up
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y0 += vDotsPerChar;
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checkLimits();
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break;
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case 13: // return
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mode = 0; x0 = leftmargin;
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break;
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// case 27: // escape
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// mode = 30;
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// // printf("Starting escape mode\n");
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// break;
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case 28: // file separator
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if (DEBUG) printf("Point plot mode\n");
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case 28: // file separator >> point plot mode
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mode = 5;
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plotPointMode= 1;
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break;
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@ -904,11 +928,11 @@ void tek4010_draw(cairo_t *cr, cairo_t *cr2, int first)
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mode = 0;
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break;
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default: if ((ch >= 32) && (ch <127)) { // printable character
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if (y0 < 8) y0 = 8;
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checkLimits();
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s[0] = ch;
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s[1] = 0;
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if (writeThroughMode) { // draw the write-trough character
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if (writeThroughMode) { // draw the write-through character
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cairo_set_source_rgb(cr2, 0, 0.7, 0);
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cairo_move_to(cr2, x0, windowHeight - y0 + 4);
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cairo_show_text(cr2, s);
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