1494 lines
37 KiB
Diff
1494 lines
37 KiB
Diff
From 633fe6b0231a0f08e6c1e32ae167117a7809cb7f Mon Sep 17 00:00:00 2001
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From: sewn <sewn@disroot.org>
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Date: Wed, 7 Jun 2023 12:27:38 +0300
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Subject: [PATCH] reflow columns and rows in case of hidden by resize.
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Extracted from https://github.com/ashish-yadav11/st
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Based on the works of BeyondMagic et al.
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---
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st.c | 941 ++++++++++++++++++++++++++++++++++++++++-------------------
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st.h | 25 +-
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2 files changed, 658 insertions(+), 308 deletions(-)
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diff --git a/st.c b/st.c
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index afb862b..46ba498 100644
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--- a/st.c
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+++ b/st.c
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@@ -36,6 +36,7 @@
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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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+#define RESIZEBUFFER 1000
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/* macros */
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#define IS_SET(flag) ((term.mode & (flag)) != 0)
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@@ -43,9 +44,22 @@
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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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+
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+#define TLINE(y) ( \
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+ (y) < term.scr ? term.hist[(term.histi + (y) - term.scr + 1 + HISTSIZE) % HISTSIZE] \
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+ : term.line[(y) - term.scr] \
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+)
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+
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+#define TLINEABS(y) ( \
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+ (y) < 0 ? term.hist[(term.histi + (y) + 1 + HISTSIZE) % HISTSIZE] : term.line[(y)] \
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+)
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+
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+#define UPDATEWRAPNEXT(alt, col) do { \
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+ if ((term.c.state & CURSOR_WRAPNEXT) && term.c.x + term.wrapcwidth[alt] < col) { \
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+ term.c.x += term.wrapcwidth[alt]; \
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+ term.c.state &= ~CURSOR_WRAPNEXT; \
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+ } \
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+} while (0);
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enum term_mode {
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MODE_WRAP = 1 << 0,
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@@ -57,6 +71,12 @@ enum term_mode {
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MODE_UTF8 = 1 << 6,
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};
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+enum scroll_mode {
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+ SCROLL_RESIZE = -1,
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+ SCROLL_NOSAVEHIST = 0,
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+ SCROLL_SAVEHIST = 1
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+};
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+
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enum cursor_movement {
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CURSOR_SAVE,
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CURSOR_LOAD
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@@ -118,10 +138,11 @@ typedef struct {
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int row; /* nb row */
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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 histi; /* history index */
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+ int histf; /* nb history available */
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+ int scr; /* scroll back */
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+ int wrapcwidth[2]; /* used in updating WRAPNEXT when resizing */
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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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@@ -179,26 +200,37 @@ static void tprinter(char *, size_t);
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static void tdumpsel(void);
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static void tdumpline(int);
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static void tdump(void);
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-static void tclearregion(int, int, int, int);
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+static void tclearregion(int, int, int, int, int);
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static void tcursor(int);
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+static void tclearglyph(Glyph *, int);
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+static void tresetcursor(void);
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static void tdeletechar(int);
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static void tdeleteline(int);
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static void tinsertblank(int);
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static void tinsertblankline(int);
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-static int tlinelen(int);
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+static int tlinelen(Line len);
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+static int tiswrapped(Line line);
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+static char *tgetglyphs(char *, const Glyph *, const Glyph *);
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+static size_t tgetline(char *, const Glyph *);
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static void tmoveto(int, int);
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static void tmoveato(int, int);
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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, int);
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-static void tscrolldown(int, int, int);
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+static void tscrollup(int, int, int, int);
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+static void tscrolldown(int, int);
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+static void treflow(int, int);
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+static void rscrolldown(int);
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+static void tresizedef(int, int);
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+static void tresizealt(int, int);
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static void tsetattr(const int *, int);
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static void tsetchar(Rune, const Glyph *, int, int);
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static void tsetdirt(int, int);
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static void tsetscroll(int, int);
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static void tswapscreen(void);
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+static void tloaddefscreen(int, int);
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+static void tloadaltscreen(int, int);
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static void tsetmode(int, int, const int *, int);
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static int twrite(const char *, int, int);
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static void tfulldirt(void);
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@@ -212,7 +244,10 @@ static void tstrsequence(uchar);
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static void drawregion(int, int, int, int);
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static void selnormalize(void);
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-static void selscroll(int, int);
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+static void selscroll(int, int, int);
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+static void selmove(int);
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+static void selremove(void);
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+static int regionselected(int, int, int, int);
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static void selsnap(int *, int *, int);
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static size_t utf8decode(const char *, Rune *, size_t);
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@@ -412,17 +447,46 @@ selinit(void)
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}
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int
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-tlinelen(int y)
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+tlinelen(Line line)
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{
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- int i = term.col;
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+ int i = term.col - 1;
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+
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+ for (; i >= 0 && !(line[i].mode & (ATTR_SET | ATTR_WRAP)); i--);
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+ return i + 1;
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+}
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- if (TLINE(y)[i - 1].mode & ATTR_WRAP)
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- return i;
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+int
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+tiswrapped(Line line)
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+{
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+ int len = tlinelen(line);
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- while (i > 0 && TLINE(y)[i - 1].u == ' ')
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- --i;
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+ return len > 0 && (line[len - 1].mode & ATTR_WRAP);
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+}
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- return i;
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+char *
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+tgetglyphs(char *buf, const Glyph *gp, const Glyph *lgp)
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+{
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+ while (gp <= lgp)
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+ if (gp->mode & ATTR_WDUMMY) {
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+ gp++;
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+ } else {
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+ buf += utf8encode((gp++)->u, buf);
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+ }
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+ return buf;
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+}
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+
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+size_t
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+tgetline(char *buf, const Glyph *fgp)
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+{
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+ char *ptr;
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+ const Glyph *lgp = &fgp[term.col - 1];
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+
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+ while (lgp > fgp && !(lgp->mode & (ATTR_SET | ATTR_WRAP)))
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+ lgp--;
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+ ptr = tgetglyphs(buf, fgp, lgp);
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+ if (!(lgp->mode & ATTR_WRAP))
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+ *(ptr++) = '\n';
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+ return ptr - buf;
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}
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void
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@@ -462,10 +526,11 @@ selextend(int col, int row, int type, int done)
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sel.oe.x = col;
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sel.oe.y = row;
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- selnormalize();
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sel.type = type;
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+ selnormalize();
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- if (oldey != sel.oe.y || oldex != sel.oe.x || oldtype != sel.type || sel.mode == SEL_EMPTY)
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+ if (oldey != sel.oe.y || oldex != sel.oe.x ||
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+ oldtype != sel.type || sel.mode == SEL_EMPTY)
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tsetdirt(MIN(sel.nb.y, oldsby), MAX(sel.ne.y, oldsey));
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sel.mode = done ? SEL_IDLE : SEL_READY;
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@@ -492,36 +557,43 @@ selnormalize(void)
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/* expand selection over line breaks */
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if (sel.type == SEL_RECTANGULAR)
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return;
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- i = tlinelen(sel.nb.y);
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- if (i < sel.nb.x)
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+
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+ i = tlinelen(TLINE(sel.nb.y));
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+ if (sel.nb.x > i)
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sel.nb.x = i;
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- if (tlinelen(sel.ne.y) <= sel.ne.x)
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- sel.ne.x = term.col - 1;
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+ if (sel.ne.x >= tlinelen(TLINE(sel.ne.y)))
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+ sel.ne.x = term.col - 1;
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}
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int
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-selected(int x, int y)
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+regionselected(int x1, int y1, int x2, int y2)
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{
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- if (sel.mode == SEL_EMPTY || sel.ob.x == -1 ||
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- sel.alt != IS_SET(MODE_ALTSCREEN))
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+ if (sel.ob.x == -1 || sel.mode == SEL_EMPTY ||
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+ sel.alt != IS_SET(MODE_ALTSCREEN) || sel.nb.y > y2 || sel.ne.y < y1)
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return 0;
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- if (sel.type == SEL_RECTANGULAR)
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- return BETWEEN(y, sel.nb.y, sel.ne.y)
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- && BETWEEN(x, sel.nb.x, sel.ne.x);
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+ return (sel.type == SEL_RECTANGULAR) ? sel.nb.x <= x2 && sel.ne.x >= x1
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+ : (sel.nb.y != y2 || sel.nb.x <= x2) &&
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+ (sel.ne.y != y1 || sel.ne.x >= x1);
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+}
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- return BETWEEN(y, sel.nb.y, sel.ne.y)
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- && (y != sel.nb.y || x >= sel.nb.x)
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- && (y != sel.ne.y || x <= sel.ne.x);
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+int
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+selected(int x, int y)
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+{
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+ return regionselected(x, y, x, y);
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}
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void
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selsnap(int *x, int *y, int direction)
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{
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int newx, newy, xt, yt;
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+ int rtop = 0, rbot = term.row - 1;
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int delim, prevdelim;
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const Glyph *gp, *prevgp;
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+ if (!IS_SET(MODE_ALTSCREEN))
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+ rtop += -term.histf + term.scr, rbot += term.scr;
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+
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switch (sel.snap) {
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case SNAP_WORD:
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/*
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@@ -536,7 +608,7 @@ selsnap(int *x, int *y, int direction)
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if (!BETWEEN(newx, 0, term.col - 1)) {
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newy += direction;
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newx = (newx + term.col) % term.col;
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- if (!BETWEEN(newy, 0, term.row - 1))
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+ if (!BETWEEN(newy, rtop, rbot))
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break;
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if (direction > 0)
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@@ -547,13 +619,13 @@ selsnap(int *x, int *y, int direction)
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break;
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}
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- if (newx >= tlinelen(newy))
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+ if (newx >= tlinelen(TLINE(newy)))
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break;
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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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+ if (!(gp->mode & ATTR_WDUMMY) && (delim != prevdelim ||
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+ (delim && !(gp->u == ' ' && prevgp->u == ' '))))
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break;
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*x = newx;
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@@ -570,18 +642,14 @@ selsnap(int *x, int *y, int direction)
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*/
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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 (!(TLINE(*y-1)[term.col-1].mode
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- & ATTR_WRAP)) {
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+ for (; *y > rtop; *y -= 1) {
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+ if (!tiswrapped(TLINE(*y-1)))
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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 (!(TLINE(*y)[term.col-1].mode
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- & ATTR_WRAP)) {
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+ for (; *y < rbot; *y += 1) {
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+ if (!tiswrapped(TLINE(*y)))
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break;
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- }
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}
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}
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break;
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@@ -592,40 +660,34 @@ char *
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getsel(void)
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{
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char *str, *ptr;
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- int y, bufsize, lastx, linelen;
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- const Glyph *gp, *last;
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+ int y, lastx, linelen;
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+ const Glyph *gp, *lgp;
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- if (sel.ob.x == -1)
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+ if (sel.ob.x == -1 || sel.alt != IS_SET(MODE_ALTSCREEN))
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return NULL;
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- bufsize = (term.col+1) * (sel.ne.y-sel.nb.y+1) * UTF_SIZ;
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- ptr = str = xmalloc(bufsize);
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+ str = xmalloc((term.col + 1) * (sel.ne.y - sel.nb.y + 1) * UTF_SIZ);
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+ ptr = str;
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/* append every set & selected glyph to the selection */
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for (y = sel.nb.y; y <= sel.ne.y; y++) {
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- if ((linelen = tlinelen(y)) == 0) {
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+ Line line = TLINE(y);
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+
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+ if ((linelen = tlinelen(line)) == 0) {
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*ptr++ = '\n';
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continue;
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}
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if (sel.type == SEL_RECTANGULAR) {
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- gp = &TLINE(y)[sel.nb.x];
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+ gp = &line[sel.nb.x];
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lastx = sel.ne.x;
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} else {
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- gp = &TLINE(y)[sel.nb.y == y ? sel.nb.x : 0];
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+ gp = &line[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 = &TLINE(y)[MIN(lastx, linelen-1)];
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- while (last >= gp && last->u == ' ')
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- --last;
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-
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- for ( ; gp <= last; ++gp) {
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- if (gp->mode & ATTR_WDUMMY)
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- continue;
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-
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- ptr += utf8encode(gp->u, ptr);
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- }
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+ lgp = &line[MIN(lastx, linelen-1)];
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+ ptr = tgetglyphs(ptr, gp, lgp);
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/*
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* Copy and pasting of line endings is inconsistent
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* in the inconsistent terminal and GUI world.
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@@ -636,10 +698,10 @@ getsel(void)
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* FIXME: Fix the computer world.
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*/
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if ((y < sel.ne.y || lastx >= linelen) &&
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- (!(last->mode & ATTR_WRAP) || sel.type == SEL_RECTANGULAR))
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+ (!(lgp->mode & ATTR_WRAP) || sel.type == SEL_RECTANGULAR))
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*ptr++ = '\n';
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}
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- *ptr = 0;
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+ *ptr = '\0';
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return str;
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}
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@@ -648,9 +710,15 @@ selclear(void)
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{
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if (sel.ob.x == -1)
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return;
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+ selremove();
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+ tsetdirt(sel.nb.y, sel.ne.y);
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+}
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+
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+void
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+selremove(void)
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+{
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sel.mode = SEL_IDLE;
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sel.ob.x = -1;
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- tsetdirt(sel.nb.y, sel.ne.y);
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}
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void
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@@ -851,10 +919,8 @@ 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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-
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- kscrolldown(&arg);
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+ kscrolldown(&((Arg){ .i = term.scr }));
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if (may_echo && IS_SET(MODE_ECHO))
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twrite(s, n, 1);
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@@ -990,7 +1056,7 @@ tsetdirtattr(int attr)
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for (i = 0; i < term.row-1; i++) {
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for (j = 0; j < term.col-1; j++) {
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if (term.line[i][j].mode & attr) {
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- tsetdirt(i, i);
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+ term.dirty[i] = 1;
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break;
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}
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}
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@@ -1000,7 +1066,8 @@ tsetdirtattr(int attr)
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void
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tfulldirt(void)
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{
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- tsetdirt(0, term.row-1);
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+ for (int i = 0; i < term.row; i++)
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+ term.dirty[i] = 1;
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}
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void
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@@ -1017,51 +1084,116 @@ tcursor(int mode)
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}
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}
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+void
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+tresetcursor(void)
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+{
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+ term.c = (TCursor){ { .mode = ATTR_NULL, .fg = defaultfg, .bg = defaultbg },
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+ .x = 0, .y = 0, .state = CURSOR_DEFAULT };
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+}
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+
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void
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treset(void)
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{
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uint i;
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+ int x, y;
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- term.c = (TCursor){{
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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, .state = CURSOR_DEFAULT};
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+ tresetcursor();
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memset(term.tabs, 0, term.col * sizeof(*term.tabs));
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for (i = tabspaces; i < term.col; i += tabspaces)
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term.tabs[i] = 1;
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term.top = 0;
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+ term.histf = 0;
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+ term.scr = 0;
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term.bot = term.row - 1;
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term.mode = MODE_WRAP|MODE_UTF8;
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memset(term.trantbl, CS_USA, sizeof(term.trantbl));
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term.charset = 0;
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+ selremove();
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for (i = 0; i < 2; i++) {
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- tmoveto(0, 0);
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- tcursor(CURSOR_SAVE);
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- tclearregion(0, 0, term.col-1, term.row-1);
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+ tcursor(CURSOR_SAVE); /* reset saved cursor */
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+ for (y = 0; y < term.row; y++)
|
|
+ for (x = 0; x < term.col; x++)
|
|
+ tclearglyph(&term.line[y][x], 0);
|
|
tswapscreen();
|
|
}
|
|
+ tfulldirt();
|
|
}
|
|
|
|
void
|
|
tnew(int col, int row)
|
|
{
|
|
- term = (Term){ .c = { .attr = { .fg = defaultfg, .bg = defaultbg } } };
|
|
- tresize(col, row);
|
|
- treset();
|
|
+ int i, j;
|
|
+
|
|
+ for (i = 0; i < 2; i++) {
|
|
+ term.line = xmalloc(row * sizeof(Line));
|
|
+ for (j = 0; j < row; j++)
|
|
+ term.line[j] = xmalloc(col * sizeof(Glyph));
|
|
+ term.col = col, term.row = row;
|
|
+ tswapscreen();
|
|
+ }
|
|
+ term.dirty = xmalloc(row * sizeof(*term.dirty));
|
|
+ term.tabs = xmalloc(col * sizeof(*term.tabs));
|
|
+ for (i = 0; i < HISTSIZE; i++)
|
|
+ term.hist[i] = xmalloc(col * sizeof(Glyph));
|
|
+ treset();
|
|
}
|
|
|
|
+/* handle it with care */
|
|
void
|
|
tswapscreen(void)
|
|
{
|
|
- Line *tmp = term.line;
|
|
+ static Line *altline;
|
|
+ static int altcol, altrow;
|
|
+ Line *tmpline = term.line;
|
|
+ int tmpcol = term.col, tmprow = term.row;
|
|
|
|
- term.line = term.alt;
|
|
- term.alt = tmp;
|
|
+ term.line = altline;
|
|
+ term.col = altcol, term.row = altrow;
|
|
+ altline = tmpline;
|
|
+ altcol = tmpcol, altrow = tmprow;
|
|
term.mode ^= MODE_ALTSCREEN;
|
|
- tfulldirt();
|
|
+}
|
|
+
|
|
+void
|
|
+tloaddefscreen(int clear, int loadcursor)
|
|
+{
|
|
+ int col, row, alt = IS_SET(MODE_ALTSCREEN);
|
|
+
|
|
+ if (alt) {
|
|
+ if (clear)
|
|
+ tclearregion(0, 0, term.col-1, term.row-1, 1);
|
|
+ col = term.col, row = term.row;
|
|
+ tswapscreen();
|
|
+ }
|
|
+ if (loadcursor)
|
|
+ tcursor(CURSOR_LOAD);
|
|
+ if (alt)
|
|
+ tresizedef(col, row);
|
|
+}
|
|
+
|
|
+void
|
|
+tloadaltscreen(int clear, int savecursor)
|
|
+{
|
|
+ int col, row, def = !IS_SET(MODE_ALTSCREEN);
|
|
+
|
|
+ if (savecursor)
|
|
+ tcursor(CURSOR_SAVE);
|
|
+ if (def) {
|
|
+ col = term.col, row = term.row;
|
|
+ tswapscreen();
|
|
+ term.scr = 0;
|
|
+ tresizealt(col, row);
|
|
+ }
|
|
+ if (clear)
|
|
+ tclearregion(0, 0, term.col-1, term.row-1, 1);
|
|
+}
|
|
+
|
|
+int
|
|
+tisaltscreen(void)
|
|
+{
|
|
+ return IS_SET(MODE_ALTSCREEN);
|
|
}
|
|
|
|
void
|
|
@@ -1069,17 +1201,22 @@ kscrolldown(const Arg* a)
|
|
{
|
|
int n = a->i;
|
|
|
|
- if (n < 0)
|
|
- n = term.row + n;
|
|
+ if (!term.scr || IS_SET(MODE_ALTSCREEN))
|
|
+ return;
|
|
|
|
- if (n > term.scr)
|
|
- n = term.scr;
|
|
+ if (n < 0)
|
|
+ n = MAX(term.row / -n, 1);
|
|
|
|
- if (term.scr > 0) {
|
|
+ if (n <= term.scr) {
|
|
term.scr -= n;
|
|
- selscroll(0, -n);
|
|
- tfulldirt();
|
|
+ } else {
|
|
+ n = term.scr;
|
|
+ term.scr = 0;
|
|
}
|
|
+
|
|
+ if (sel.ob.x != -1 && !sel.alt)
|
|
+ selmove(-n); /* negate change in term.scr */
|
|
+ tfulldirt();
|
|
}
|
|
|
|
void
|
|
@@ -1087,92 +1224,118 @@ kscrollup(const Arg* a)
|
|
{
|
|
int n = a->i;
|
|
|
|
+ if (!term.histf || IS_SET(MODE_ALTSCREEN))
|
|
+ return;
|
|
+
|
|
if (n < 0)
|
|
- n = term.row + n;
|
|
+ n = MAX(term.row / -n, 1);
|
|
|
|
- if (term.scr <= HISTSIZE-n) {
|
|
+ if (term.scr + n <= term.histf) {
|
|
term.scr += n;
|
|
- selscroll(0, n);
|
|
- tfulldirt();
|
|
+ } else {
|
|
+ n = term.histf - term.scr;
|
|
+ term.scr = term.histf;
|
|
}
|
|
+
|
|
+ if (sel.ob.x != -1 && !sel.alt)
|
|
+ selmove(n); /* negate change in term.scr */
|
|
+ tfulldirt();
|
|
}
|
|
|
|
void
|
|
-tscrolldown(int orig, int n, int copyhist)
|
|
+tscrolldown(int top, int n)
|
|
{
|
|
- int i;
|
|
+ int i, bot = term.bot;
|
|
Line temp;
|
|
|
|
- LIMIT(n, 0, term.bot-orig+1);
|
|
- if (copyhist) {
|
|
- term.histi = (term.histi - 1 + HISTSIZE) % HISTSIZE;
|
|
- temp = term.hist[term.histi];
|
|
- term.hist[term.histi] = term.line[term.bot];
|
|
- term.line[term.bot] = temp;
|
|
- }
|
|
-
|
|
+ if (n <= 0)
|
|
+ return;
|
|
+ n = MIN(n, bot-top+1);
|
|
|
|
- tsetdirt(orig, term.bot-n);
|
|
- tclearregion(0, term.bot-n+1, term.col-1, term.bot);
|
|
+ tsetdirt(top, bot-n);
|
|
+ tclearregion(0, bot-n+1, term.col-1, bot, 1);
|
|
|
|
- for (i = term.bot; i >= orig+n; i--) {
|
|
+ for (i = bot; i >= top+n; i--) {
|
|
temp = term.line[i];
|
|
term.line[i] = term.line[i-n];
|
|
term.line[i-n] = temp;
|
|
}
|
|
|
|
- if (term.scr == 0)
|
|
- selscroll(orig, n);
|
|
+ if (sel.ob.x != -1 && sel.alt == IS_SET(MODE_ALTSCREEN))
|
|
+ selscroll(top, bot, n);
|
|
}
|
|
|
|
void
|
|
-tscrollup(int orig, int n, int copyhist)
|
|
+tscrollup(int top, int bot, int n, int mode)
|
|
{
|
|
- int i;
|
|
+ int i, j, s;
|
|
+ int alt = IS_SET(MODE_ALTSCREEN);
|
|
+ int savehist = !alt && top == 0 && mode != SCROLL_NOSAVEHIST;
|
|
Line temp;
|
|
|
|
- LIMIT(n, 0, term.bot-orig+1);
|
|
-
|
|
- if (copyhist) {
|
|
- term.histi = (term.histi + 1) % HISTSIZE;
|
|
- temp = term.hist[term.histi];
|
|
- term.hist[term.histi] = term.line[orig];
|
|
- term.line[orig] = temp;
|
|
+ if (n <= 0)
|
|
+ return;
|
|
+ n = MIN(n, bot-top+1);
|
|
+
|
|
+ if (savehist) {
|
|
+ for (i = 0; i < n; i++) {
|
|
+ term.histi = (term.histi + 1) % HISTSIZE;
|
|
+ temp = term.hist[term.histi];
|
|
+ for (j = 0; j < term.col; j++)
|
|
+ tclearglyph(&temp[j], 1);
|
|
+ term.hist[term.histi] = term.line[i];
|
|
+ term.line[i] = temp;
|
|
+ }
|
|
+ term.histf = MIN(term.histf + n, HISTSIZE);
|
|
+ s = n;
|
|
+ if (term.scr) {
|
|
+ j = term.scr;
|
|
+ term.scr = MIN(j + n, HISTSIZE);
|
|
+ s = j + n - term.scr;
|
|
+ }
|
|
+ if (mode != SCROLL_RESIZE)
|
|
+ tfulldirt();
|
|
+ } else {
|
|
+ tclearregion(0, top, term.col-1, top+n-1, 1);
|
|
+ tsetdirt(top+n, bot);
|
|
}
|
|
|
|
- if (term.scr > 0 && term.scr < HISTSIZE)
|
|
- term.scr = MIN(term.scr + n, HISTSIZE-1);
|
|
-
|
|
- tclearregion(0, orig, term.col-1, orig+n-1);
|
|
- tsetdirt(orig+n, term.bot);
|
|
-
|
|
- for (i = orig; i <= term.bot-n; i++) {
|
|
+ for (i = top; i <= bot-n; i++) {
|
|
temp = term.line[i];
|
|
term.line[i] = term.line[i+n];
|
|
term.line[i+n] = temp;
|
|
}
|
|
|
|
- if (term.scr == 0)
|
|
- selscroll(orig, -n);
|
|
+ if (sel.ob.x != -1 && sel.alt == alt) {
|
|
+ if (!savehist) {
|
|
+ selscroll(top, bot, -n);
|
|
+ } else if (s > 0) {
|
|
+ selmove(-s);
|
|
+ if (-term.scr + sel.nb.y < -term.histf)
|
|
+ selremove();
|
|
+ }
|
|
+ }
|
|
}
|
|
|
|
void
|
|
-selscroll(int orig, int n)
|
|
+selmove(int n)
|
|
{
|
|
- if (sel.ob.x == -1)
|
|
- return;
|
|
+ sel.ob.y += n, sel.nb.y += n;
|
|
+ sel.oe.y += n, sel.ne.y += n;
|
|
+}
|
|
+
|
|
+void
|
|
+selscroll(int top, int bot, int n)
|
|
+{
|
|
+ /* turn absolute coordinates into relative */
|
|
+ top += term.scr, bot += term.scr;
|
|
|
|
- if (BETWEEN(sel.nb.y, orig, term.bot) != BETWEEN(sel.ne.y, orig, term.bot)) {
|
|
+ if (BETWEEN(sel.nb.y, top, bot) != BETWEEN(sel.ne.y, top, bot)) {
|
|
selclear();
|
|
- } else if (BETWEEN(sel.nb.y, orig, term.bot)) {
|
|
- sel.ob.y += n;
|
|
- sel.oe.y += n;
|
|
- if (sel.ob.y < term.top || sel.ob.y > term.bot ||
|
|
- sel.oe.y < term.top || sel.oe.y > term.bot) {
|
|
+ } else if (BETWEEN(sel.nb.y, top, bot)) {
|
|
+ selmove(n);
|
|
+ if (sel.nb.y < top || sel.ne.y > bot)
|
|
selclear();
|
|
- } else {
|
|
- selnormalize();
|
|
- }
|
|
}
|
|
}
|
|
|
|
@@ -1182,7 +1345,7 @@ tnewline(int first_col)
|
|
int y = term.c.y;
|
|
|
|
if (y == term.bot) {
|
|
- tscrollup(term.top, 1, 1);
|
|
+ tscrollup(term.top, term.bot, 1, SCROLL_SAVEHIST);
|
|
} else {
|
|
y++;
|
|
}
|
|
@@ -1272,89 +1435,93 @@ tsetchar(Rune u, const Glyph *attr, int x, int y)
|
|
} else if (term.line[y][x].mode & ATTR_WDUMMY) {
|
|
term.line[y][x-1].u = ' ';
|
|
term.line[y][x-1].mode &= ~ATTR_WIDE;
|
|
- }
|
|
+ }
|
|
|
|
term.dirty[y] = 1;
|
|
term.line[y][x] = *attr;
|
|
term.line[y][x].u = u;
|
|
+ term.line[y][x].mode |= ATTR_SET;
|
|
}
|
|
|
|
void
|
|
-tclearregion(int x1, int y1, int x2, int y2)
|
|
+tclearglyph(Glyph *gp, int usecurattr)
|
|
{
|
|
- int x, y, temp;
|
|
- Glyph *gp;
|
|
+ if (usecurattr) {
|
|
+ gp->fg = term.c.attr.fg;
|
|
+ gp->bg = term.c.attr.bg;
|
|
+ } else {
|
|
+ gp->fg = defaultfg;
|
|
+ gp->bg = defaultbg;
|
|
+ }
|
|
+ gp->mode = ATTR_NULL;
|
|
+ gp->u = ' ';
|
|
+}
|
|
|
|
- if (x1 > x2)
|
|
- temp = x1, x1 = x2, x2 = temp;
|
|
- if (y1 > y2)
|
|
- temp = y1, y1 = y2, y2 = temp;
|
|
+void
|
|
+tclearregion(int x1, int y1, int x2, int y2, int usecurattr)
|
|
+{
|
|
+ int x, y;
|
|
|
|
- LIMIT(x1, 0, term.col-1);
|
|
- LIMIT(x2, 0, term.col-1);
|
|
- LIMIT(y1, 0, term.row-1);
|
|
- LIMIT(y2, 0, term.row-1);
|
|
+ /* regionselected() takes relative coordinates */
|
|
+ if (regionselected(x1+term.scr, y1+term.scr, x2+term.scr, y2+term.scr))
|
|
+ selremove();
|
|
|
|
for (y = y1; y <= y2; y++) {
|
|
term.dirty[y] = 1;
|
|
- for (x = x1; x <= x2; x++) {
|
|
- gp = &term.line[y][x];
|
|
- if (selected(x, y))
|
|
- selclear();
|
|
- gp->fg = term.c.attr.fg;
|
|
- gp->bg = term.c.attr.bg;
|
|
- gp->mode = 0;
|
|
- gp->u = ' ';
|
|
- }
|
|
+ for (x = x1; x <= x2; x++)
|
|
+ tclearglyph(&term.line[y][x], usecurattr);
|
|
}
|
|
}
|
|
|
|
void
|
|
tdeletechar(int n)
|
|
{
|
|
- int dst, src, size;
|
|
- Glyph *line;
|
|
-
|
|
- LIMIT(n, 0, term.col - term.c.x);
|
|
+ int src, dst, size;
|
|
+ Line line;
|
|
|
|
+ if (n <= 0)
|
|
+ return;
|
|
dst = term.c.x;
|
|
- src = term.c.x + n;
|
|
+ src = MIN(term.c.x + n, term.col);
|
|
size = term.col - src;
|
|
- line = term.line[term.c.y];
|
|
-
|
|
- memmove(&line[dst], &line[src], size * sizeof(Glyph));
|
|
- tclearregion(term.col-n, term.c.y, term.col-1, term.c.y);
|
|
+ if (size > 0) { /* otherwise src would point beyond the array
|
|
+ https://stackoverflow.com/questions/29844298 */
|
|
+ line = term.line[term.c.y];
|
|
+ memmove(&line[dst], &line[src], size * sizeof(Glyph));
|
|
+ }
|
|
+ tclearregion(dst + size, term.c.y, term.col - 1, term.c.y, 1);
|
|
}
|
|
|
|
void
|
|
tinsertblank(int n)
|
|
{
|
|
- int dst, src, size;
|
|
- Glyph *line;
|
|
+ int src, dst, size;
|
|
+ Line line;
|
|
|
|
- LIMIT(n, 0, term.col - term.c.x);
|
|
-
|
|
- dst = term.c.x + n;
|
|
+ if (n <= 0)
|
|
+ return;
|
|
+ dst = MIN(term.c.x + n, term.col);
|
|
src = term.c.x;
|
|
size = term.col - dst;
|
|
- line = term.line[term.c.y];
|
|
-
|
|
- memmove(&line[dst], &line[src], size * sizeof(Glyph));
|
|
- tclearregion(src, term.c.y, dst - 1, term.c.y);
|
|
+ if (size > 0) { /* otherwise dst would point beyond the array */
|
|
+ line = term.line[term.c.y];
|
|
+ memmove(&line[dst], &line[src], size * sizeof(Glyph));
|
|
+ }
|
|
+ tclearregion(src, term.c.y, dst - 1, term.c.y, 1);
|
|
}
|
|
|
|
void
|
|
tinsertblankline(int n)
|
|
{
|
|
if (BETWEEN(term.c.y, term.top, term.bot))
|
|
- tscrolldown(term.c.y, n, 0);
|
|
+ tscrolldown(term.c.y, n);
|
|
}
|
|
|
|
void
|
|
tdeleteline(int n)
|
|
{
|
|
if (BETWEEN(term.c.y, term.top, term.bot))
|
|
- tscrollup(term.c.y, n, 0);
|
|
+ tscrollup(term.c.y, term.bot, n, SCROLL_NOSAVEHIST);
|
|
}
|
|
|
|
int32_t
|
|
@@ -1528,7 +1695,7 @@ tsetscroll(int t, int b)
|
|
void
|
|
tsetmode(int priv, int set, const int *args, int narg)
|
|
{
|
|
- int alt; const int *lim;
|
|
+ const int *lim;
|
|
|
|
for (lim = args + narg; args < lim; ++args) {
|
|
if (priv) {
|
|
@@ -1589,25 +1756,18 @@ tsetmode(int priv, int set, const int *args, int narg)
|
|
xsetmode(set, MODE_8BIT);
|
|
break;
|
|
case 1049: /* swap screen & set/restore cursor as xterm */
|
|
- if (!allowaltscreen)
|
|
- break;
|
|
- tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
|
|
- /* FALLTHROUGH */
|
|
case 47: /* swap screen */
|
|
- case 1047:
|
|
+ case 1047: /* swap screen, clearing alternate screen */
|
|
if (!allowaltscreen)
|
|
break;
|
|
- alt = IS_SET(MODE_ALTSCREEN);
|
|
- if (alt) {
|
|
- tclearregion(0, 0, term.col-1,
|
|
- term.row-1);
|
|
- }
|
|
- if (set ^ alt) /* set is always 1 or 0 */
|
|
- tswapscreen();
|
|
- if (*args != 1049)
|
|
- break;
|
|
- /* FALLTHROUGH */
|
|
+ if (set)
|
|
+ tloadaltscreen(*args == 1049, *args == 1049);
|
|
+ else
|
|
+ tloaddefscreen(*args == 1047, *args == 1049);
|
|
+ break;
|
|
case 1048:
|
|
+ if (!allowaltscreen)
|
|
+ break;
|
|
tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
|
|
break;
|
|
case 2004: /* 2004: bracketed paste mode */
|
|
@@ -1659,7 +1819,7 @@ void
|
|
csihandle(void)
|
|
{
|
|
char buf[40];
|
|
- int len;
|
|
+ int n, x;
|
|
|
|
switch (csiescseq.mode[0]) {
|
|
default:
|
|
@@ -1757,20 +1917,30 @@ csihandle(void)
|
|
case 'J': /* ED -- Clear screen */
|
|
switch (csiescseq.arg[0]) {
|
|
case 0: /* below */
|
|
- tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
|
|
+ tclearregion(term.c.x, term.c.y, term.col-1, term.c.y, 1);
|
|
if (term.c.y < term.row-1) {
|
|
- tclearregion(0, term.c.y+1, term.col-1,
|
|
- term.row-1);
|
|
+ tclearregion(0, term.c.y+1, term.col-1, term.row-1, 1);
|
|
}
|
|
break;
|
|
case 1: /* above */
|
|
- if (term.c.y > 1)
|
|
- tclearregion(0, 0, term.col-1, term.c.y-1);
|
|
- tclearregion(0, term.c.y, term.c.x, term.c.y);
|
|
+ if (term.c.y >= 1)
|
|
+ tclearregion(0, 0, term.col-1, term.c.y-1, 1);
|
|
+ tclearregion(0, term.c.y, term.c.x, term.c.y, 1);
|
|
break;
|
|
case 2: /* all */
|
|
- tclearregion(0, 0, term.col-1, term.row-1);
|
|
- break;
|
|
+ if (IS_SET(MODE_ALTSCREEN)) {
|
|
+ tclearregion(0, 0, term.col-1, term.row-1, 1);
|
|
+ break;
|
|
+ }
|
|
+ /* vte does this:
|
|
+ tscrollup(0, term.row-1, term.row, SCROLL_SAVEHIST); */
|
|
+
|
|
+ /* alacritty does this: */
|
|
+ for (n = term.row-1; n >= 0 && tlinelen(term.line[n]) == 0; n--);
|
|
+ if (n >= 0)
|
|
+ tscrollup(0, term.row-1, n+1, SCROLL_SAVEHIST);
|
|
+ tscrollup(0, term.row-1, term.row-n-1, SCROLL_NOSAVEHIST);
|
|
+ break;
|
|
default:
|
|
goto unknown;
|
|
}
|
|
@@ -1778,24 +1948,24 @@ csihandle(void)
|
|
case 'K': /* EL -- Clear line */
|
|
switch (csiescseq.arg[0]) {
|
|
case 0: /* right */
|
|
- tclearregion(term.c.x, term.c.y, term.col-1,
|
|
- term.c.y);
|
|
+ tclearregion(term.c.x, term.c.y, term.col-1, term.c.y, 1);
|
|
break;
|
|
case 1: /* left */
|
|
- tclearregion(0, term.c.y, term.c.x, term.c.y);
|
|
+ tclearregion(0, term.c.y, term.c.x, term.c.y, 1);
|
|
break;
|
|
case 2: /* all */
|
|
- tclearregion(0, term.c.y, term.col-1, term.c.y);
|
|
+ tclearregion(0, term.c.y, term.col-1, term.c.y, 1);
|
|
break;
|
|
}
|
|
break;
|
|
case 'S': /* SU -- Scroll <n> line up */
|
|
DEFAULT(csiescseq.arg[0], 1);
|
|
- tscrollup(term.top, csiescseq.arg[0], 0);
|
|
+ /* xterm, urxvt, alacritty save this in history */
|
|
+ tscrollup(term.top, term.bot, csiescseq.arg[0], SCROLL_SAVEHIST);
|
|
break;
|
|
case 'T': /* SD -- Scroll <n> line down */
|
|
DEFAULT(csiescseq.arg[0], 1);
|
|
- tscrolldown(term.top, csiescseq.arg[0], 0);
|
|
+ tscrolldown(term.top, csiescseq.arg[0]);
|
|
break;
|
|
case 'L': /* IL -- Insert <n> blank lines */
|
|
DEFAULT(csiescseq.arg[0], 1);
|
|
@@ -1809,9 +1979,11 @@ csihandle(void)
|
|
tdeleteline(csiescseq.arg[0]);
|
|
break;
|
|
case 'X': /* ECH -- Erase <n> char */
|
|
+ if (csiescseq.arg[0] < 0)
|
|
+ return;
|
|
DEFAULT(csiescseq.arg[0], 1);
|
|
- tclearregion(term.c.x, term.c.y,
|
|
- term.c.x + csiescseq.arg[0] - 1, term.c.y);
|
|
+ x = MIN(term.c.x + csiescseq.arg[0], term.col) - 1;
|
|
+ tclearregion(term.c.x, term.c.y, x, term.c.y, 1);
|
|
break;
|
|
case 'P': /* DCH -- Delete <n> char */
|
|
DEFAULT(csiescseq.arg[0], 1);
|
|
@@ -1837,9 +2009,9 @@ csihandle(void)
|
|
ttywrite("\033[0n", sizeof("\033[0n") - 1, 0);
|
|
break;
|
|
case 6: /* Report Cursor Position (CPR) "<row>;<column>R" */
|
|
- len = snprintf(buf, sizeof(buf), "\033[%i;%iR",
|
|
+ n = snprintf(buf, sizeof(buf), "\033[%i;%iR",
|
|
term.c.y+1, term.c.x+1);
|
|
- ttywrite(buf, len, 0);
|
|
+ ttywrite(buf, n, 0);
|
|
break;
|
|
default:
|
|
goto unknown;
|
|
@@ -2137,16 +2309,8 @@ tdumpsel(void)
|
|
void
|
|
tdumpline(int n)
|
|
{
|
|
- char buf[UTF_SIZ];
|
|
- const Glyph *bp, *end;
|
|
-
|
|
- bp = &term.line[n][0];
|
|
- end = &bp[MIN(tlinelen(n), term.col) - 1];
|
|
- if (bp != end || bp->u != ' ') {
|
|
- for ( ; bp <= end; ++bp)
|
|
- tprinter(buf, utf8encode(bp->u, buf));
|
|
- }
|
|
- tprinter("\n", 1);
|
|
+ char str[(term.col + 1) * UTF_SIZ];
|
|
+ tprinter(str, tgetline(str, &term.line[n][0]));
|
|
}
|
|
|
|
void
|
|
@@ -2367,7 +2531,7 @@ eschandle(uchar ascii)
|
|
return 0;
|
|
case 'D': /* IND -- Linefeed */
|
|
if (term.c.y == term.bot) {
|
|
- tscrollup(term.top, 1, 1);
|
|
+ tscrollup(term.top, term.bot, 1, SCROLL_SAVEHIST);
|
|
} else {
|
|
tmoveto(term.c.x, term.c.y+1);
|
|
}
|
|
@@ -2380,7 +2544,7 @@ eschandle(uchar ascii)
|
|
break;
|
|
case 'M': /* RI -- Reverse index */
|
|
if (term.c.y == term.top) {
|
|
- tscrolldown(term.top, 1, 1);
|
|
+ tscrolldown(term.top, 1);
|
|
} else {
|
|
tmoveto(term.c.x, term.c.y-1);
|
|
}
|
|
@@ -2523,7 +2687,8 @@ check_control_code:
|
|
*/
|
|
return;
|
|
}
|
|
- if (selected(term.c.x, term.c.y))
|
|
+ /* selected() takes relative coordinates */
|
|
+ if (selected(term.c.x + term.scr, term.c.y + term.scr))
|
|
selclear();
|
|
|
|
gp = &term.line[term.c.y][term.c.x];
|
|
@@ -2558,6 +2723,7 @@ check_control_code:
|
|
if (term.c.x+width < term.col) {
|
|
tmoveto(term.c.x+width, term.c.y);
|
|
} else {
|
|
+ term.wrapcwidth[IS_SET(MODE_ALTSCREEN)] = width;
|
|
term.c.state |= CURSOR_WRAPNEXT;
|
|
}
|
|
}
|
|
@@ -2595,93 +2761,275 @@ twrite(const char *buf, int buflen, int show_ctrl)
|
|
}
|
|
|
|
void
|
|
-tresize(int col, int row)
|
|
+treflow(int col, int row)
|
|
{
|
|
int i, j;
|
|
- int minrow = MIN(row, term.row);
|
|
- int mincol = MIN(col, term.col);
|
|
- int *bp;
|
|
- TCursor c;
|
|
-
|
|
- if (col < 1 || row < 1) {
|
|
- fprintf(stderr,
|
|
- "tresize: error resizing to %dx%d\n", col, row);
|
|
- return;
|
|
+ int oce, nce, bot, scr;
|
|
+ int ox = 0, oy = -term.histf, nx = 0, ny = -1, len;
|
|
+ int cy = -1; /* proxy for new y coordinate of cursor */
|
|
+ int nlines;
|
|
+ Line *buf, line;
|
|
+
|
|
+ /* y coordinate of cursor line end */
|
|
+ for (oce = term.c.y; oce < term.row - 1 &&
|
|
+ tiswrapped(term.line[oce]); oce++);
|
|
+
|
|
+ nlines = term.histf + oce + 1;
|
|
+ if (col < term.col) {
|
|
+ /* each line can take this many lines after reflow */
|
|
+ j = (term.col + col - 1) / col;
|
|
+ nlines = j * nlines;
|
|
+ if (nlines > HISTSIZE + RESIZEBUFFER + row) {
|
|
+ nlines = HISTSIZE + RESIZEBUFFER + row;
|
|
+ oy = -(nlines / j - oce - 1);
|
|
+ }
|
|
}
|
|
+ buf = xmalloc(nlines * sizeof(Line));
|
|
+ do {
|
|
+ if (!nx)
|
|
+ buf[++ny] = xmalloc(col * sizeof(Glyph));
|
|
+ if (!ox) {
|
|
+ line = TLINEABS(oy);
|
|
+ len = tlinelen(line);
|
|
+ }
|
|
+ if (oy == term.c.y) {
|
|
+ if (!ox)
|
|
+ len = MAX(len, term.c.x + 1);
|
|
+ /* update cursor */
|
|
+ if (cy < 0 && term.c.x - ox < col - nx) {
|
|
+ term.c.x = nx + term.c.x - ox, cy = ny;
|
|
+ UPDATEWRAPNEXT(0, col);
|
|
+ }
|
|
+ }
|
|
+ /* get reflowed lines in buf */
|
|
+ if (col - nx > len - ox) {
|
|
+ memcpy(&buf[ny][nx], &line[ox], (len-ox) * sizeof(Glyph));
|
|
+ nx += len - ox;
|
|
+ if (len == 0 || !(line[len - 1].mode & ATTR_WRAP)) {
|
|
+ for (j = nx; j < col; j++)
|
|
+ tclearglyph(&buf[ny][j], 0);
|
|
+ nx = 0;
|
|
+ } else if (nx > 0) {
|
|
+ buf[ny][nx - 1].mode &= ~ATTR_WRAP;
|
|
+ }
|
|
+ ox = 0, oy++;
|
|
+ } else if (col - nx == len - ox) {
|
|
+ memcpy(&buf[ny][nx], &line[ox], (col-nx) * sizeof(Glyph));
|
|
+ ox = 0, oy++, nx = 0;
|
|
+ } else/* if (col - nx < len - ox) */ {
|
|
+ memcpy(&buf[ny][nx], &line[ox], (col-nx) * sizeof(Glyph));
|
|
+ ox += col - nx;
|
|
+ buf[ny][col - 1].mode |= ATTR_WRAP;
|
|
+ nx = 0;
|
|
+ }
|
|
+ } while (oy <= oce);
|
|
+ if (nx)
|
|
+ for (j = nx; j < col; j++)
|
|
+ tclearglyph(&buf[ny][j], 0);
|
|
|
|
- /*
|
|
- * slide screen to keep cursor where we expect it -
|
|
- * tscrollup would work here, but we can optimize to
|
|
- * memmove because we're freeing the earlier lines
|
|
- */
|
|
- for (i = 0; i <= term.c.y - row; i++) {
|
|
+ /* free extra lines */
|
|
+ for (i = row; i < term.row; i++)
|
|
free(term.line[i]);
|
|
- free(term.alt[i]);
|
|
+ /* resize to new height */
|
|
+ term.line = xrealloc(term.line, row * sizeof(Line));
|
|
+
|
|
+ bot = MIN(ny, row - 1);
|
|
+ scr = MAX(row - term.row, 0);
|
|
+ /* update y coordinate of cursor line end */
|
|
+ nce = MIN(oce + scr, bot);
|
|
+ /* update cursor y coordinate */
|
|
+ term.c.y = nce - (ny - cy);
|
|
+ if (term.c.y < 0) {
|
|
+ j = nce, nce = MIN(nce + -term.c.y, bot);
|
|
+ term.c.y += nce - j;
|
|
+ while (term.c.y < 0) {
|
|
+ free(buf[ny--]);
|
|
+ term.c.y++;
|
|
+ }
|
|
}
|
|
- /* ensure that both src and dst are not NULL */
|
|
- if (i > 0) {
|
|
- memmove(term.line, term.line + i, row * sizeof(Line));
|
|
- memmove(term.alt, term.alt + i, row * sizeof(Line));
|
|
+ /* allocate new rows */
|
|
+ for (i = row - 1; i > nce; i--) {
|
|
+ term.line[i] = xmalloc(col * sizeof(Glyph));
|
|
+ for (j = 0; j < col; j++)
|
|
+ tclearglyph(&term.line[i][j], 0);
|
|
}
|
|
- for (i += row; i < term.row; i++) {
|
|
+ /* fill visible area */
|
|
+ for (/*i = nce */; i >= term.row; i--, ny--)
|
|
+ term.line[i] = buf[ny];
|
|
+ for (/*i = term.row - 1 */; i >= 0; i--, ny--) {
|
|
free(term.line[i]);
|
|
- free(term.alt[i]);
|
|
+ term.line[i] = buf[ny];
|
|
+ }
|
|
+ /* fill lines in history buffer and update term.histf */
|
|
+ for (/*i = -1 */; ny >= 0 && i >= -HISTSIZE; i--, ny--) {
|
|
+ j = (term.histi + i + 1 + HISTSIZE) % HISTSIZE;
|
|
+ free(term.hist[j]);
|
|
+ term.hist[j] = buf[ny];
|
|
}
|
|
+ term.histf = -i - 1;
|
|
+ term.scr = MIN(term.scr, term.histf);
|
|
+ /* resize rest of the history lines */
|
|
+ for (/*i = -term.histf - 1 */; i >= -HISTSIZE; i--) {
|
|
+ j = (term.histi + i + 1 + HISTSIZE) % HISTSIZE;
|
|
+ term.hist[j] = xrealloc(term.hist[j], col * sizeof(Glyph));
|
|
+ }
|
|
+ free(buf);
|
|
+}
|
|
|
|
- /* resize to new height */
|
|
- term.line = xrealloc(term.line, row * sizeof(Line));
|
|
- term.alt = xrealloc(term.alt, row * sizeof(Line));
|
|
- term.dirty = xrealloc(term.dirty, row * sizeof(*term.dirty));
|
|
- term.tabs = xrealloc(term.tabs, col * sizeof(*term.tabs));
|
|
+void
|
|
+rscrolldown(int n)
|
|
+{
|
|
+ int i;
|
|
+ Line temp;
|
|
|
|
- for (i = 0; i < HISTSIZE; i++) {
|
|
- term.hist[i] = xrealloc(term.hist[i], col * sizeof(Glyph));
|
|
- for (j = mincol; j < col; j++) {
|
|
- term.hist[i][j] = term.c.attr;
|
|
- term.hist[i][j].u = ' ';
|
|
- }
|
|
- }
|
|
+ /* can never be true as of now
|
|
+ if (IS_SET(MODE_ALTSCREEN))
|
|
+ return; */
|
|
|
|
- /* resize each row to new width, zero-pad if needed */
|
|
- for (i = 0; i < minrow; i++) {
|
|
- term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph));
|
|
- term.alt[i] = xrealloc(term.alt[i], col * sizeof(Glyph));
|
|
- }
|
|
+ if ((n = MIN(n, term.histf)) <= 0)
|
|
+ return;
|
|
|
|
- /* allocate any new rows */
|
|
- for (/* i = minrow */; i < row; i++) {
|
|
- term.line[i] = xmalloc(col * sizeof(Glyph));
|
|
- term.alt[i] = xmalloc(col * sizeof(Glyph));
|
|
+ for (i = term.c.y + n; i >= n; i--) {
|
|
+ temp = term.line[i];
|
|
+ term.line[i] = term.line[i-n];
|
|
+ term.line[i-n] = temp;
|
|
}
|
|
+ for (/*i = n - 1 */; i >= 0; i--) {
|
|
+ temp = term.line[i];
|
|
+ term.line[i] = term.hist[term.histi];
|
|
+ term.hist[term.histi] = temp;
|
|
+ term.histi = (term.histi - 1 + HISTSIZE) % HISTSIZE;
|
|
+ }
|
|
+ term.c.y += n;
|
|
+ term.histf -= n;
|
|
+ if ((i = term.scr - n) >= 0) {
|
|
+ term.scr = i;
|
|
+ } else {
|
|
+ term.scr = 0;
|
|
+ if (sel.ob.x != -1 && !sel.alt)
|
|
+ selmove(-i);
|
|
+ }
|
|
+}
|
|
+
|
|
+void
|
|
+tresize(int col, int row)
|
|
+{
|
|
+ int *bp;
|
|
+
|
|
+ /* col and row are always MAX(_, 1)
|
|
+ if (col < 1 || row < 1) {
|
|
+ fprintf(stderr, "tresize: error resizing to %dx%d\n", col, row);
|
|
+ return;
|
|
+ } */
|
|
+
|
|
+ term.dirty = xrealloc(term.dirty, row * sizeof(*term.dirty));
|
|
+ term.tabs = xrealloc(term.tabs, col * sizeof(*term.tabs));
|
|
if (col > term.col) {
|
|
bp = term.tabs + term.col;
|
|
-
|
|
memset(bp, 0, sizeof(*term.tabs) * (col - term.col));
|
|
while (--bp > term.tabs && !*bp)
|
|
/* nothing */ ;
|
|
for (bp += tabspaces; bp < term.tabs + col; bp += tabspaces)
|
|
*bp = 1;
|
|
}
|
|
- /* update terminal size */
|
|
- term.col = col;
|
|
- term.row = row;
|
|
- /* reset scrolling region */
|
|
- tsetscroll(0, row-1);
|
|
- /* make use of the LIMIT in tmoveto */
|
|
- tmoveto(term.c.x, term.c.y);
|
|
- /* Clearing both screens (it makes dirty all lines) */
|
|
- c = term.c;
|
|
- for (i = 0; i < 2; i++) {
|
|
- if (mincol < col && 0 < minrow) {
|
|
- tclearregion(mincol, 0, col - 1, minrow - 1);
|
|
+
|
|
+ if (IS_SET(MODE_ALTSCREEN))
|
|
+ tresizealt(col, row);
|
|
+ else
|
|
+ tresizedef(col, row);
|
|
+}
|
|
+
|
|
+void
|
|
+tresizedef(int col, int row)
|
|
+{
|
|
+ int i, j;
|
|
+
|
|
+ /* return if dimensions haven't changed */
|
|
+ if (term.col == col && term.row == row) {
|
|
+ tfulldirt();
|
|
+ return;
|
|
+ }
|
|
+ if (col != term.col) {
|
|
+ if (!sel.alt)
|
|
+ selremove();
|
|
+ treflow(col, row);
|
|
+ } else {
|
|
+ /* slide screen up if otherwise cursor would get out of the screen */
|
|
+ if (term.c.y >= row) {
|
|
+ tscrollup(0, term.row - 1, term.c.y - row + 1, SCROLL_RESIZE);
|
|
+ term.c.y = row - 1;
|
|
}
|
|
- if (0 < col && minrow < row) {
|
|
- tclearregion(0, minrow, col - 1, row - 1);
|
|
+ for (i = row; i < term.row; i++)
|
|
+ free(term.line[i]);
|
|
+
|
|
+ /* resize to new height */
|
|
+ term.line = xrealloc(term.line, row * sizeof(Line));
|
|
+ /* allocate any new rows */
|
|
+ for (i = term.row; i < row; i++) {
|
|
+ term.line[i] = xmalloc(col * sizeof(Glyph));
|
|
+ for (j = 0; j < col; j++)
|
|
+ tclearglyph(&term.line[i][j], 0);
|
|
}
|
|
- tswapscreen();
|
|
- tcursor(CURSOR_LOAD);
|
|
+ /* scroll down as much as height has increased */
|
|
+ rscrolldown(row - term.row);
|
|
+ }
|
|
+ /* update terminal size */
|
|
+ term.col = col, term.row = row;
|
|
+ /* reset scrolling region */
|
|
+ term.top = 0, term.bot = row - 1;
|
|
+ /* dirty all lines */
|
|
+ tfulldirt();
|
|
+}
|
|
+
|
|
+void
|
|
+tresizealt(int col, int row)
|
|
+{
|
|
+ int i, j;
|
|
+
|
|
+ /* return if dimensions haven't changed */
|
|
+ if (term.col == col && term.row == row) {
|
|
+ tfulldirt();
|
|
+ return;
|
|
}
|
|
- term.c = c;
|
|
+ if (sel.alt)
|
|
+ selremove();
|
|
+ /* slide screen up if otherwise cursor would get out of the screen */
|
|
+ for (i = 0; i <= term.c.y - row; i++)
|
|
+ free(term.line[i]);
|
|
+ if (i > 0) {
|
|
+ /* ensure that both src and dst are not NULL */
|
|
+ memmove(term.line, term.line + i, row * sizeof(Line));
|
|
+ term.c.y = row - 1;
|
|
+ }
|
|
+ for (i += row; i < term.row; i++)
|
|
+ free(term.line[i]);
|
|
+ /* resize to new height */
|
|
+ term.line = xrealloc(term.line, row * sizeof(Line));
|
|
+ /* resize to new width */
|
|
+ for (i = 0; i < MIN(row, term.row); i++) {
|
|
+ term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph));
|
|
+ for (j = term.col; j < col; j++)
|
|
+ tclearglyph(&term.line[i][j], 0);
|
|
+ }
|
|
+ /* allocate any new rows */
|
|
+ for (/*i = MIN(row, term.row) */; i < row; i++) {
|
|
+ term.line[i] = xmalloc(col * sizeof(Glyph));
|
|
+ for (j = 0; j < col; j++)
|
|
+ tclearglyph(&term.line[i][j], 0);
|
|
+ }
|
|
+ /* update cursor */
|
|
+ if (term.c.x >= col) {
|
|
+ term.c.state &= ~CURSOR_WRAPNEXT;
|
|
+ term.c.x = col - 1;
|
|
+ } else {
|
|
+ UPDATEWRAPNEXT(1, col);
|
|
+ }
|
|
+ /* update terminal size */
|
|
+ term.col = col, term.row = row;
|
|
+ /* reset scrolling region */
|
|
+ term.top = 0, term.bot = row - 1;
|
|
+ /* dirty all lines */
|
|
+ tfulldirt();
|
|
}
|
|
|
|
void
|
|
@@ -2721,9 +3069,8 @@ 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]);
|
|
+ xdrawcursor(cx, term.c.y, term.line[term.c.y][cx],
|
|
+ term.ocx, term.ocy, term.line[term.ocy][term.ocx]);
|
|
term.ocx = cx;
|
|
term.ocy = term.c.y;
|
|
xfinishdraw();
|
|
diff --git a/st.h b/st.h
|
|
index 818a6f8..514ec08 100644
|
|
--- a/st.h
|
|
+++ b/st.h
|
|
@@ -22,17 +22,19 @@
|
|
|
|
enum glyph_attribute {
|
|
ATTR_NULL = 0,
|
|
- ATTR_BOLD = 1 << 0,
|
|
- ATTR_FAINT = 1 << 1,
|
|
- ATTR_ITALIC = 1 << 2,
|
|
- ATTR_UNDERLINE = 1 << 3,
|
|
- ATTR_BLINK = 1 << 4,
|
|
- ATTR_REVERSE = 1 << 5,
|
|
- ATTR_INVISIBLE = 1 << 6,
|
|
- ATTR_STRUCK = 1 << 7,
|
|
- ATTR_WRAP = 1 << 8,
|
|
- ATTR_WIDE = 1 << 9,
|
|
- ATTR_WDUMMY = 1 << 10,
|
|
+ ATTR_SET = 1 << 0,
|
|
+ ATTR_BOLD = 1 << 1,
|
|
+ ATTR_FAINT = 1 << 2,
|
|
+ ATTR_ITALIC = 1 << 3,
|
|
+ ATTR_UNDERLINE = 1 << 4,
|
|
+ ATTR_BLINK = 1 << 5,
|
|
+ ATTR_REVERSE = 1 << 6,
|
|
+ ATTR_INVISIBLE = 1 << 7,
|
|
+ ATTR_STRUCK = 1 << 8,
|
|
+ ATTR_WRAP = 1 << 9,
|
|
+ ATTR_WIDE = 1 << 10,
|
|
+ ATTR_WDUMMY = 1 << 11,
|
|
+ ATTR_SELECTED = 1 << 12,
|
|
ATTR_BOLD_FAINT = ATTR_BOLD | ATTR_FAINT,
|
|
};
|
|
|
|
@@ -90,6 +92,7 @@ void toggleprinter(const Arg *);
|
|
|
|
int tattrset(int);
|
|
void tnew(int, int);
|
|
+int tisaltscreen(void);
|
|
void tresize(int, int);
|
|
void tsetdirtattr(int);
|
|
void ttyhangup(void);
|
|
--
|
|
2.40.1
|
|
|