added support for the "magic margin", changed c.hide to c.state, changed xcursor() to use term instead of a
parameter and fixed the cursor position after setting a scrolling region.
This commit is contained in:
Aurélien Aptel
52
st.c
52
st.c
@ -46,8 +46,9 @@
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/* Attribute, Cursor, Character state, Terminal mode, Screen draw mode */
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enum { ATTR_NULL=0 , ATTR_REVERSE=1 , ATTR_UNDERLINE=2, ATTR_BOLD=4, ATTR_GFX=8 };
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enum { CURSOR_UP, CURSOR_DOWN, CURSOR_LEFT, CURSOR_RIGHT, CURSOR_HIDE = 1,
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CURSOR_DRAW = 0, CURSOR_SAVE, CURSOR_LOAD };
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enum { CURSOR_UP, CURSOR_DOWN, CURSOR_LEFT, CURSOR_RIGHT,
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CURSOR_SAVE, CURSOR_LOAD };
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enum { CURSOR_DEFAULT = 0, CURSOR_HIDE = 1, CURSOR_WRAPNEXT = 2 };
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enum { GLYPH_SET=1, GLYPH_DIRTY=2 };
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enum { MODE_WRAP=1, MODE_INSERT=2, MODE_APPKEYPAD=4 };
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enum { ESC_START=1, ESC_CSI=2, ESC_OSC=4, ESC_TITLE=8, ESC_ALTCHARSET=16 };
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@ -67,7 +68,7 @@ typedef struct {
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Glyph attr; /* current char attributes */
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int x;
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int y;
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char hide;
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char state;
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} TCursor;
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/* CSI Escape sequence structs */
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@ -164,7 +165,7 @@ static void xbell(void);
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static void xdraws(char *, Glyph, int, int, int);
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static void xhints(void);
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static void xclear(int, int, int, int);
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static void xcursor(int);
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static void xcursor(void);
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static void xinit(void);
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static void xloadcols(void);
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@ -329,7 +330,7 @@ treset(void) {
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.mode = ATTR_NULL,
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.fg = DefaultFG,
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.bg = DefaultBG
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}, .x = 0, .y = 0, .hide = 0};
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}, .x = 0, .y = 0, .state = CURSOR_DEFAULT};
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term.top = 0, term.bot = term.row - 1;
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term.mode = MODE_WRAP;
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@ -414,8 +415,11 @@ csiparse(void) {
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void
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tmoveto(int x, int y) {
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term.c.x = x < 0 ? 0 : x >= term.col ? term.col-1 : x;
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term.c.y = y < 0 ? 0 : y >= term.row ? term.row-1 : y;
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LIMIT(x, 0, term.col-1);
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LIMIT(y, 0, term.row-1);
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term.c.state &= ~CURSOR_WRAPNEXT;
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term.c.x = x;
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term.c.y = y;
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}
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void
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@ -711,7 +715,7 @@ csihandle(void) {
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case 12: /* att610 -- Stop blinking cursor (IGNORED) */
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break;
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case 25:
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term.c.hide = CURSOR_HIDE;
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term.c.state |= CURSOR_HIDE;
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break;
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case 1048: /* XXX: no alt. screen to erase/save */
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case 1049:
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@ -760,7 +764,7 @@ csihandle(void) {
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case 12: /* att610 -- Start blinking cursor (IGNORED) */
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break;
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case 25:
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term.c.hide = CURSOR_DRAW;
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term.c.state &= ~CURSOR_HIDE;
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break;
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case 1048:
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case 1049: /* XXX: no alt. screen to erase/save */
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@ -788,6 +792,7 @@ csihandle(void) {
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DEFAULT(escseq.arg[0], 1);
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DEFAULT(escseq.arg[1], term.row);
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tsetscroll(escseq.arg[0]-1, escseq.arg[1]-1);
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tmoveto(0, 0);
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}
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break;
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case 's': /* DECSC -- Save cursor position (ANSI.SYS) */
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@ -932,11 +937,13 @@ tputc(char c) {
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term.esc = ESC_START;
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break;
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default:
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tsetchar(c);
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if(term.c.x+1 < term.col) {
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tmoveto(term.c.x+1, term.c.y);
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} else if(IS_SET(MODE_WRAP))
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if(IS_SET(MODE_WRAP) && term.c.state & CURSOR_WRAPNEXT)
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tnewline();
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tsetchar(c);
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if(term.c.x+1 < term.col)
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tmoveto(term.c.x+1, term.c.y);
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else
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term.c.state |= CURSOR_WRAPNEXT;
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break;
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}
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}
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@ -974,13 +981,12 @@ tresize(int col, int row) {
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for(/* i == minrow */; i < row; i++)
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term.line[i] = calloc(col, sizeof(Glyph));
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LIMIT(term.c.x, 0, col-1);
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LIMIT(term.c.y, 0, row-1);
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LIMIT(term.top, 0, row-1);
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LIMIT(term.bot, 0, row-1);
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term.bot = row-1;
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/* update terminal size */
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term.col = col, term.row = row;
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/* make use of the LIMIT in tmoveto */
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tmoveto(term.c.x, term.c.y);
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/* reset scrolling region */
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tsetscroll(0, row-1);
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}
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void
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@ -1112,7 +1118,7 @@ xdraws(char *s, Glyph base, int x, int y, int len) {
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}
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void
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xcursor(int mode) {
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xcursor(void) {
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static int oldx = 0;
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static int oldy = 0;
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Glyph g = {' ', ATTR_NULL, DefaultBG, DefaultCS, 0};
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@ -1130,7 +1136,7 @@ xcursor(int mode) {
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xclear(oldx, oldy, oldx, oldy);
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/* draw the new one */
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if(mode == CURSOR_DRAW) {
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if(!(term.c.state & CURSOR_HIDE)) {
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xdraws(&g.c, g, term.c.x, term.c.y, 1);
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oldx = term.c.x, oldy = term.c.y;
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}
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@ -1157,7 +1163,7 @@ draw(int dummy) {
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if(term.line[y][x].state & GLYPH_SET)
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xdrawc(x, y, term.line[y][x]);
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xcursor(term.c.hide);
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xcursor();
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XCopyArea(xw.dis, xw.buf, xw.win, dc.gc, 0, 0, xw.bufw, xw.bufh, BORDER, BORDER);
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XFlush(xw.dis);
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}
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@ -1193,7 +1199,7 @@ draw(int redraw_all) {
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if(i > 0)
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xdraws(buf, base, ox, y, i);
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}
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xcursor(term.c.hide);
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xcursor();
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XCopyArea(xw.dis, xw.buf, xw.win, dc.gc, 0, 0, xw.bufw, xw.bufh, BORDER, BORDER);
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XFlush(xw.dis);
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}
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