Apply scrollback patch
parent
404defffdd
commit
a3321c680c
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@ -191,6 +191,8 @@ static Shortcut shortcuts[] = {
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{ TERMMOD, XK_Y, selpaste, {.i = 0} },
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{ ShiftMask, XK_Insert, selpaste, {.i = 0} },
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{ TERMMOD, XK_Num_Lock, numlock, {.i = 0} },
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{ MODKEY|ShiftMask, XK_K, kscrollup, {.i = -1} },
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{ MODKEY|ShiftMask, XK_J, kscrolldown, {.i = -1} },
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};
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/*
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@ -0,0 +1,136 @@
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#include <stdlib.h>
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#include <stdio.h>
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#include <math.h>
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#include <X11/Xft/Xft.h>
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#include <hb.h>
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#include <hb-ft.h>
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#include "st.h"
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void hbtransformsegment(XftFont *xfont, const Glyph *string, hb_codepoint_t *codepoints, int start, int length);
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hb_font_t *hbfindfont(XftFont *match);
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typedef struct {
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XftFont *match;
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hb_font_t *font;
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} HbFontMatch;
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static int hbfontslen = 0;
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static HbFontMatch *hbfontcache = NULL;
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void
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hbunloadfonts()
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{
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for (int i = 0; i < hbfontslen; i++) {
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hb_font_destroy(hbfontcache[i].font);
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XftUnlockFace(hbfontcache[i].match);
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}
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if (hbfontcache != NULL) {
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free(hbfontcache);
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hbfontcache = NULL;
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}
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hbfontslen = 0;
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}
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hb_font_t *
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hbfindfont(XftFont *match)
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{
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for (int i = 0; i < hbfontslen; i++) {
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if (hbfontcache[i].match == match)
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return hbfontcache[i].font;
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}
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/* Font not found in cache, caching it now. */
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hbfontcache = realloc(hbfontcache, sizeof(HbFontMatch) * (hbfontslen + 1));
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FT_Face face = XftLockFace(match);
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hb_font_t *font = hb_ft_font_create(face, NULL);
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if (font == NULL)
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die("Failed to load Harfbuzz font.");
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hbfontcache[hbfontslen].match = match;
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hbfontcache[hbfontslen].font = font;
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hbfontslen += 1;
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return font;
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}
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void
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hbtransform(XftGlyphFontSpec *specs, const Glyph *glyphs, size_t len, int x, int y)
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{
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int start = 0, length = 1, gstart = 0;
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hb_codepoint_t *codepoints = calloc(len, sizeof(hb_codepoint_t));
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for (int idx = 1, specidx = 1; idx < len; idx++) {
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if (glyphs[idx].mode & ATTR_WDUMMY) {
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length += 1;
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continue;
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}
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if (specs[specidx].font != specs[start].font || ATTRCMP(glyphs[gstart], glyphs[idx]) || selected(x + idx, y) != selected(x + gstart, y)) {
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hbtransformsegment(specs[start].font, glyphs, codepoints, gstart, length);
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/* Reset the sequence. */
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length = 1;
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start = specidx;
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gstart = idx;
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} else {
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length += 1;
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}
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specidx++;
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}
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/* EOL. */
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hbtransformsegment(specs[start].font, glyphs, codepoints, gstart, length);
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/* Apply the transformation to glyph specs. */
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for (int i = 0, specidx = 0; i < len; i++) {
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if (glyphs[i].mode & ATTR_WDUMMY)
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continue;
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if (codepoints[i] != specs[specidx].glyph)
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((Glyph *)glyphs)[i].mode |= ATTR_LIGA;
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specs[specidx++].glyph = codepoints[i];
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}
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free(codepoints);
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}
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void
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hbtransformsegment(XftFont *xfont, const Glyph *string, hb_codepoint_t *codepoints, int start, int length)
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{
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hb_font_t *font = hbfindfont(xfont);
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if (font == NULL)
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return;
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Rune rune;
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ushort mode = USHRT_MAX;
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hb_buffer_t *buffer = hb_buffer_create();
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hb_buffer_set_direction(buffer, HB_DIRECTION_LTR);
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/* Fill buffer with codepoints. */
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for (int i = start; i < (start+length); i++) {
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rune = string[i].u;
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mode = string[i].mode;
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if (mode & ATTR_WDUMMY)
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rune = 0x0020;
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hb_buffer_add_codepoints(buffer, &rune, 1, 0, 1);
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}
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/* Shape the segment. */
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hb_shape(font, buffer, NULL, 0);
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/* Get new glyph info. */
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hb_glyph_info_t *info = hb_buffer_get_glyph_infos(buffer, NULL);
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/* Write new codepoints. */
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for (int i = 0; i < length; i++) {
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hb_codepoint_t gid = info[i].codepoint;
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codepoints[start+i] = gid;
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}
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/* Cleanup. */
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hb_buffer_destroy(buffer);
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}
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@ -0,0 +1,7 @@
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#include <X11/Xft/Xft.h>
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#include <hb.h>
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#include <hb-ft.h>
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void hbunloadfonts();
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void hbtransform(XftGlyphFontSpec *, const Glyph *, size_t, int, int);
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@ -35,6 +35,7 @@
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#define ESC_ARG_SIZ 16
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#define STR_BUF_SIZ ESC_BUF_SIZ
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#define STR_ARG_SIZ ESC_ARG_SIZ
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#define HISTSIZE 2000
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/* macros */
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#define IS_SET(flag) ((term.mode & (flag)) != 0)
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@ -42,6 +43,9 @@
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#define ISCONTROLC1(c) (BETWEEN(c, 0x80, 0x9f))
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#define ISCONTROL(c) (ISCONTROLC0(c) || ISCONTROLC1(c))
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#define ISDELIM(u) (u && wcschr(worddelimiters, u))
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#define TLINE(y) ((y) < term.scr ? term.hist[((y) + term.histi - \
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term.scr + HISTSIZE + 1) % HISTSIZE] : \
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term.line[(y) - term.scr])
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enum term_mode {
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MODE_WRAP = 1 << 0,
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@ -115,6 +119,9 @@ typedef struct {
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int col; /* nb col */
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Line *line; /* screen */
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Line *alt; /* alternate screen */
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Line hist[HISTSIZE]; /* history buffer */
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int histi; /* history index */
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int scr; /* scroll back */
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int *dirty; /* dirtyness of lines */
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TCursor c; /* cursor */
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int ocx; /* old cursor col */
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@ -184,8 +191,8 @@ static void tnewline(int);
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static void tputtab(int);
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static void tputc(Rune);
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static void treset(void);
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static void tscrollup(int, int);
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static void tscrolldown(int, int);
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static void tscrollup(int, int, int);
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static void tscrolldown(int, int, int);
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static void tsetattr(int *, int);
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static void tsetchar(Rune, Glyph *, int, int);
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static void tsetdirt(int, int);
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@ -414,10 +421,10 @@ tlinelen(int y)
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{
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int i = term.col;
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if (term.line[y][i - 1].mode & ATTR_WRAP)
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if (TLINE(y)[i - 1].mode & ATTR_WRAP)
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return i;
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while (i > 0 && term.line[y][i - 1].u == ' ')
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while (i > 0 && TLINE(y)[i - 1].u == ' ')
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--i;
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return i;
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@ -526,7 +533,7 @@ selsnap(int *x, int *y, int direction)
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* Snap around if the word wraps around at the end or
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* beginning of a line.
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*/
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prevgp = &term.line[*y][*x];
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prevgp = &TLINE(*y)[*x];
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prevdelim = ISDELIM(prevgp->u);
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for (;;) {
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newx = *x + direction;
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@ -541,14 +548,14 @@ selsnap(int *x, int *y, int direction)
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yt = *y, xt = *x;
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else
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yt = newy, xt = newx;
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if (!(term.line[yt][xt].mode & ATTR_WRAP))
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if (!(TLINE(yt)[xt].mode & ATTR_WRAP))
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break;
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}
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if (newx >= tlinelen(newy))
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break;
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gp = &term.line[newy][newx];
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gp = &TLINE(newy)[newx];
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delim = ISDELIM(gp->u);
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if (!(gp->mode & ATTR_WDUMMY) && (delim != prevdelim
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|| (delim && gp->u != prevgp->u)))
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@ -569,14 +576,14 @@ selsnap(int *x, int *y, int direction)
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*x = (direction < 0) ? 0 : term.col - 1;
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if (direction < 0) {
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for (; *y > 0; *y += direction) {
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if (!(term.line[*y-1][term.col-1].mode
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if (!(TLINE(*y-1)[term.col-1].mode
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& ATTR_WRAP)) {
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break;
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}
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}
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} else if (direction > 0) {
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for (; *y < term.row-1; *y += direction) {
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if (!(term.line[*y][term.col-1].mode
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if (!(TLINE(*y)[term.col-1].mode
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& ATTR_WRAP)) {
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break;
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}
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@ -607,13 +614,13 @@ getsel(void)
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}
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if (sel.type == SEL_RECTANGULAR) {
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gp = &term.line[y][sel.nb.x];
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gp = &TLINE(y)[sel.nb.x];
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lastx = sel.ne.x;
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} else {
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gp = &term.line[y][sel.nb.y == y ? sel.nb.x : 0];
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gp = &TLINE(y)[sel.nb.y == y ? sel.nb.x : 0];
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lastx = (sel.ne.y == y) ? sel.ne.x : term.col-1;
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}
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last = &term.line[y][MIN(lastx, linelen-1)];
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last = &TLINE(y)[MIN(lastx, linelen-1)];
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while (last >= gp && last->u == ' ')
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--last;
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@ -848,6 +855,9 @@ void
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ttywrite(const char *s, size_t n, int may_echo)
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{
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const char *next;
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Arg arg = (Arg) { .i = term.scr };
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kscrolldown(&arg);
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if (may_echo && IS_SET(MODE_ECHO))
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twrite(s, n, 1);
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@ -1059,13 +1069,53 @@ tswapscreen(void)
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}
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void
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tscrolldown(int orig, int n)
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kscrolldown(const Arg* a)
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{
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int n = a->i;
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if (n < 0)
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n = term.row + n;
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if (n > term.scr)
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n = term.scr;
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if (term.scr > 0) {
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term.scr -= n;
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selscroll(0, -n);
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tfulldirt();
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}
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}
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void
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kscrollup(const Arg* a)
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{
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int n = a->i;
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if (n < 0)
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n = term.row + n;
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if (term.scr <= HISTSIZE-n) {
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term.scr += n;
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selscroll(0, n);
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tfulldirt();
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}
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}
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void
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tscrolldown(int orig, int n, int copyhist)
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{
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int i;
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Line temp;
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LIMIT(n, 0, term.bot-orig+1);
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if (copyhist) {
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term.histi = (term.histi - 1 + HISTSIZE) % HISTSIZE;
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temp = term.hist[term.histi];
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term.hist[term.histi] = term.line[term.bot];
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term.line[term.bot] = temp;
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}
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tsetdirt(orig, term.bot-n);
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tclearregion(0, term.bot-n+1, term.col-1, term.bot);
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@ -1075,17 +1125,28 @@ tscrolldown(int orig, int n)
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term.line[i-n] = temp;
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}
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if (term.scr == 0)
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selscroll(orig, n);
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}
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void
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tscrollup(int orig, int n)
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tscrollup(int orig, int n, int copyhist)
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{
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int i;
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Line temp;
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LIMIT(n, 0, term.bot-orig+1);
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if (copyhist) {
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term.histi = (term.histi + 1) % HISTSIZE;
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temp = term.hist[term.histi];
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term.hist[term.histi] = term.line[orig];
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term.line[orig] = temp;
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}
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if (term.scr > 0 && term.scr < HISTSIZE)
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term.scr = MIN(term.scr + n, HISTSIZE-1);
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tclearregion(0, orig, term.col-1, orig+n-1);
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tsetdirt(orig+n, term.bot);
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@ -1095,6 +1156,7 @@ tscrollup(int orig, int n)
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term.line[i+n] = temp;
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}
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if (term.scr == 0)
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selscroll(orig, -n);
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}
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@ -1124,7 +1186,7 @@ tnewline(int first_col)
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int y = term.c.y;
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if (y == term.bot) {
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tscrollup(term.top, 1);
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tscrollup(term.top, 1, 1);
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} else {
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y++;
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}
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@ -1289,14 +1351,14 @@ void
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tinsertblankline(int n)
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{
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if (BETWEEN(term.c.y, term.top, term.bot))
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tscrolldown(term.c.y, n);
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tscrolldown(term.c.y, n, 0);
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}
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void
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tdeleteline(int n)
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{
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if (BETWEEN(term.c.y, term.top, term.bot))
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tscrollup(term.c.y, n);
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tscrollup(term.c.y, n, 0);
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}
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int32_t
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@ -1733,11 +1795,11 @@ csihandle(void)
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break;
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case 'S': /* SU -- Scroll <n> line up */
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DEFAULT(csiescseq.arg[0], 1);
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tscrollup(term.top, csiescseq.arg[0]);
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tscrollup(term.top, csiescseq.arg[0], 0);
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break;
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case 'T': /* SD -- Scroll <n> line down */
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DEFAULT(csiescseq.arg[0], 1);
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tscrolldown(term.top, csiescseq.arg[0]);
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tscrolldown(term.top, csiescseq.arg[0], 0);
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break;
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case 'L': /* IL -- Insert <n> blank lines */
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DEFAULT(csiescseq.arg[0], 1);
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@ -2249,7 +2311,7 @@ eschandle(uchar ascii)
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return 0;
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case 'D': /* IND -- Linefeed */
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if (term.c.y == term.bot) {
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tscrollup(term.top, 1);
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tscrollup(term.top, 1, 1);
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} else {
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tmoveto(term.c.x, term.c.y+1);
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}
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@ -2262,7 +2324,7 @@ eschandle(uchar ascii)
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break;
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case 'M': /* RI -- Reverse index */
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if (term.c.y == term.top) {
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tscrolldown(term.top, 1);
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tscrolldown(term.top, 1, 1);
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} else {
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tmoveto(term.c.x, term.c.y-1);
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}
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@ -2472,7 +2534,7 @@ twrite(const char *buf, int buflen, int show_ctrl)
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void
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tresize(int col, int row)
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{
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int i;
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int i, j;
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int minrow = MIN(row, term.row);
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int mincol = MIN(col, term.col);
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int *bp;
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@ -2509,6 +2571,14 @@ tresize(int col, int row)
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term.dirty = xrealloc(term.dirty, row * sizeof(*term.dirty));
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term.tabs = xrealloc(term.tabs, col * sizeof(*term.tabs));
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for (i = 0; i < HISTSIZE; i++) {
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term.hist[i] = xrealloc(term.hist[i], col * sizeof(Glyph));
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for (j = mincol; j < col; j++) {
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term.hist[i][j] = term.c.attr;
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term.hist[i][j].u = ' ';
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}
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}
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/* resize each row to new width, zero-pad if needed */
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for (i = 0; i < minrow; i++) {
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term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph));
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@ -2567,7 +2637,7 @@ drawregion(int x1, int y1, int x2, int y2)
|
|||
continue;
|
||||
|
||||
term.dirty[y] = 0;
|
||||
xdrawline(term.line[y], x1, y, x2);
|
||||
xdrawline(TLINE(y), x1, y, x2);
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -2588,6 +2658,7 @@ draw(void)
|
|||
cx--;
|
||||
|
||||
drawregion(0, 0, term.col, term.row);
|
||||
if (term.scr == 0)
|
||||
xdrawcursor(cx, term.c.y, term.line[term.c.y][cx],
|
||||
term.ocx, term.ocy, term.line[term.ocy][term.ocx]);
|
||||
term.ocx = cx;
|
||||
|
|
|
|||
|
|
@ -81,6 +81,8 @@ void die(const char *, ...);
|
|||
void redraw(void);
|
||||
void draw(void);
|
||||
|
||||
void kscrolldown(const Arg *);
|
||||
void kscrollup(const Arg *);
|
||||
void printscreen(const Arg *);
|
||||
void printsel(const Arg *);
|
||||
void sendbreak(const Arg *);
|
||||
|
|
|
|||
Loading…
Reference in New Issue