X-Git-Url: https://git.xinqibao.xyz/st.git/blobdiff_plain/6c0a1eff2fb2419b9bbfb545d0cf21a2e524efb2..ee7fd748ac7bfabda2ac37251d230b45adb3e138:/st.c?ds=sidebyside
diff --git a/st.c b/st.c
index 741e680..d169ddf 100644
--- a/st.c
+++ b/st.c
@@ -24,6 +24,7 @@
#include <X11/Xutil.h>
#include <X11/cursorfont.h>
#include <X11/keysym.h>
+#include <X11/extensions/Xdbe.h>
#if defined(__linux)
#include <pty.h>
@@ -163,7 +164,7 @@ typedef struct {
int col; /* nb col */
Line* line; /* screen */
Line* alt; /* alternate screen */
- bool* dirty; /* dirtyness of lines */
+ bool* dirty; /* dirtyness of lines */
TCursor c; /* cursor */
int top; /* top scroll limit */
int bot; /* bottom scroll limit */
@@ -171,6 +172,7 @@ typedef struct {
int esc; /* escape state flags */
char title[ESC_TITLE_SIZ];
int titlelen;
+ bool *tabs;
} Term;
/* Purely graphic info */
@@ -178,15 +180,13 @@ typedef struct {
Display* dpy;
Colormap cmap;
Window win;
- Pixmap buf;
+ XdbeBackBuffer buf;
Atom xembed;
XIM xim;
XIC xic;
int scr;
int w; /* window width */
int h; /* window height */
- int bufw; /* pixmap width */
- int bufh; /* pixmap height */
int ch; /* char height */
int cw; /* char width */
char state; /* focus, redraw, visible */
@@ -259,6 +259,7 @@ static void tsetattr(int*, int);
static void tsetchar(char*);
static void tsetscroll(int, int);
static void tswapscreen(void);
+static void tsetdirt(int, int);
static void tfulldirt(void);
static void ttynew(void);
@@ -269,7 +270,7 @@ static void ttywrite(const char *, size_t);
static void xdraws(char *, Glyph, int, int, int, int);
static void xhints(void);
static void xclear(int, int, int, int);
-static void xcopy(int, int, int, int);
+static void xcopy();
static void xdrawcursor(void);
static void xinit(void);
static void xloadcols(void);
@@ -446,8 +447,8 @@ utf8size(char *s) {
void
selinit(void) {
- sel.tclick1.tv_sec = 0;
- sel.tclick1.tv_usec = 0;
+ memset(&sel.tclick1, 0, sizeof(sel.tclick1));
+ memset(&sel.tclick2, 0, sizeof(sel.tclick2));
sel.mode = 0;
sel.bx = -1;
sel.clip = NULL;
@@ -520,8 +521,7 @@ bpress(XEvent *e) {
mousereport(e);
else if(e->xbutton.button == Button1) {
if(sel.bx != -1)
- for(int i=sel.b.y; i<=sel.e.y; i++)
- term.dirty[i] = 1;
+ tsetdirt(sel.b.y, sel.e.y);
sel.mode = 1;
sel.ex = sel.bx = X2COL(e->xbutton.x);
sel.ey = sel.by = Y2ROW(e->xbutton.y);
@@ -531,21 +531,28 @@ bpress(XEvent *e) {
void
selcopy(void) {
char *str, *ptr;
- int x, y, sz, sl, ls = 0;
+ int x, y, bufsize, is_selected = 0;
if(sel.bx == -1)
str = NULL;
+
else {
- sz = (term.col+1) * (sel.e.y-sel.b.y+1) * UTF_SIZ;
- ptr = str = malloc(sz);
+ bufsize = (term.col+1) * (sel.e.y-sel.b.y+1) * UTF_SIZ;
+ ptr = str = malloc(bufsize);
+
+ /* append every set & selected glyph to the selection */
for(y = 0; y < term.row; y++) {
- for(x = 0; x < term.col; x++)
- if(term.line[y][x].state & GLYPH_SET && (ls = selected(x, y))) {
- sl = utf8size(term.line[y][x].c);
- memcpy(ptr, term.line[y][x].c, sl);
- ptr += sl;
+ for(x = 0; x < term.col; x++) {
+ is_selected = selected(x, y);
+ if((term.line[y][x].state & GLYPH_SET) && is_selected) {
+ int size = utf8size(term.line[y][x].c);
+ memcpy(ptr, term.line[y][x].c, size);
+ ptr += size;
}
- if(ls && y < sel.e.y)
+ }
+
+ /* \n at the end of every selected line except for the last one */
+ if(is_selected && y < sel.e.y)
*ptr++ = '\n';
}
*ptr = 0;
@@ -687,8 +694,7 @@ bmotion(XEvent *e) {
if(oldey != sel.ey || oldex != sel.ex) {
int starty = MIN(oldey, sel.ey);
int endy = MAX(oldey, sel.ey);
- for(int i = starty; i <= endy; i++)
- term.dirty[i] = 1;
+ tsetdirt(starty, endy);
draw();
}
}
@@ -813,13 +819,23 @@ ttyresize(int x, int y) {
}
void
-tfulldirt(void)
+tsetdirt(int top, int bot)
{
int i;
- for(i = 0; i < term.row; i++)
+
+ LIMIT(top, 0, term.row-1);
+ LIMIT(bot, 0, term.row-1);
+
+ for(i = top; i <= bot; i++)
term.dirty[i] = 1;
}
+void
+tfulldirt(void)
+{
+ tsetdirt(0, term.row-1);
+}
+
void
tcursor(int mode) {
static TCursor c;
@@ -832,12 +848,16 @@ tcursor(int mode) {
void
treset(void) {
+ unsigned i;
term.c = (TCursor){{
.mode = ATTR_NULL,
.fg = DefaultFG,
.bg = DefaultBG
}, .x = 0, .y = 0, .state = CURSOR_DEFAULT};
-
+
+ memset(term.tabs, 0, term.col * sizeof(*term.tabs));
+ for (i = TAB; i < term.col; i += TAB)
+ term.tabs[i] = 1;
term.top = 0, term.bot = term.row - 1;
term.mode = MODE_WRAP;
tclearregion(0, 0, term.col-1, term.row-1);
@@ -850,12 +870,14 @@ tnew(int col, int row) {
term.line = malloc(term.row * sizeof(Line));
term.alt = malloc(term.row * sizeof(Line));
term.dirty = malloc(term.row * sizeof(*term.dirty));
+ term.tabs = malloc(term.col * sizeof(*term.tabs));
for(row = 0; row < term.row; row++) {
term.line[row] = malloc(term.col * sizeof(Glyph));
term.alt [row] = malloc(term.col * sizeof(Glyph));
term.dirty[row] = 0;
}
+ memset(term.tabs, 0, term.col * sizeof(*term.tabs));
/* setup screen */
treset();
}
@@ -1573,6 +1595,7 @@ tresize(int col, int row) {
term.line = realloc(term.line, row * sizeof(Line));
term.alt = realloc(term.alt, row * sizeof(Line));
term.dirty = realloc(term.dirty, row * sizeof(*term.dirty));
+ term.tabs = realloc(term.tabs, col * sizeof(*term.tabs));
/* resize each row to new width, zero-pad if needed */
for(i = 0; i < minrow; i++) {
@@ -1591,7 +1614,15 @@ tresize(int col, int row) {
term.line[i] = calloc(col, sizeof(Glyph));
term.alt [i] = calloc(col, sizeof(Glyph));
}
-
+ if (col > term.col) {
+ bool *bp = term.tabs + term.col;
+
+ memset(bp, 0, sizeof(*term.tabs) * (col - term.col));
+ while (--bp > term.tabs && !*bp)
+ /* nothing */ ;
+ for (bp += TAB; bp < term.tabs + col; bp += TAB)
+ *bp = 1;
+ }
/* update terminal size */
term.col = col, term.row = row;
/* make use of the LIMIT in tmoveto */
@@ -1604,32 +1635,8 @@ tresize(int col, int row) {
void
xresize(int col, int row) {
- Pixmap newbuf;
- int oldw, oldh;
-
- oldw = xw.bufw;
- oldh = xw.bufh;
- xw.bufw = MAX(1, col * xw.cw);
- xw.bufh = MAX(1, row * xw.ch);
- newbuf = XCreatePixmap(xw.dpy, xw.win, xw.bufw, xw.bufh, XDefaultDepth(xw.dpy, xw.scr));
- XCopyArea(xw.dpy, xw.buf, newbuf, dc.gc, 0, 0, xw.bufw, xw.bufh, 0, 0);
- XFreePixmap(xw.dpy, xw.buf);
- XSetForeground(xw.dpy, dc.gc, dc.col[DefaultBG]);
- if(xw.bufw > oldw)
- XFillRectangle(xw.dpy, newbuf, dc.gc, oldw, 0,
- xw.bufw-oldw, MIN(xw.bufh, oldh));
- else if(xw.bufw < oldw && (BORDER > 0 || xw.w > xw.bufw))
- XClearArea(xw.dpy, xw.win, BORDER+xw.bufw, BORDER,
- xw.w-xw.bufh-BORDER, BORDER+MIN(xw.bufh, oldh),
- False);
- if(xw.bufh > oldh)
- XFillRectangle(xw.dpy, newbuf, dc.gc, 0, oldh,
- xw.bufw, xw.bufh-oldh);
- else if(xw.bufh < oldh && (BORDER > 0 || xw.h > xw.bufh))
- XClearArea(xw.dpy, xw.win, BORDER, BORDER+xw.bufh,
- xw.w-2*BORDER, xw.h-xw.bufh-BORDER,
- False);
- xw.buf = newbuf;
+ xw.w = MAX(1, 2*BORDER + col * xw.cw);
+ xw.h = MAX(1, 2*BORDER + row * xw.ch);
}
void
@@ -1678,7 +1685,7 @@ void
xclear(int x1, int y1, int x2, int y2) {
XSetForeground(xw.dpy, dc.gc, dc.col[IS_SET(MODE_REVERSE) ? DefaultFG : DefaultBG]);
XFillRectangle(xw.dpy, xw.buf, dc.gc,
- x1 * xw.cw, y1 * xw.ch,
+ BORDER + x1 * xw.cw, BORDER + y1 * xw.ch,
(x2-x1+1) * xw.cw, (y2-y1+1) * xw.ch);
}
@@ -1764,10 +1771,8 @@ xinit(void) {
xloadcols();
/* window - default size */
- xw.bufh = term.row * xw.ch;
- xw.bufw = term.col * xw.cw;
- xw.h = xw.bufh + 2*BORDER;
- xw.w = xw.bufw + 2*BORDER;
+ xw.h = 2*BORDER + term.row * xw.ch;
+ xw.w = 2*BORDER + term.col * xw.cw;
attrs.background_pixel = dc.col[DefaultBG];
attrs.border_pixel = dc.col[DefaultBG];
@@ -1785,7 +1790,7 @@ xinit(void) {
CWBackPixel | CWBorderPixel | CWBitGravity | CWEventMask
| CWColormap,
&attrs);
- xw.buf = XCreatePixmap(xw.dpy, xw.win, xw.bufw, xw.bufh, XDefaultDepth(xw.dpy, xw.scr));
+ xw.buf = XdbeAllocateBackBufferName(xw.dpy, xw.win, XdbeCopied);
/* input methods */
@@ -1814,7 +1819,7 @@ xinit(void) {
void
xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) {
int fg = base.fg, bg = base.bg, temp;
- int winx = x*xw.cw, winy = y*xw.ch + dc.font.ascent, width = charlen*xw.cw;
+ int winx = BORDER+x*xw.cw, winy = BORDER+y*xw.ch + dc.font.ascent, width = charlen*xw.cw;
XFontSet fontset = dc.font.set;
int i;
@@ -1855,10 +1860,10 @@ xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) {
/* copy buffer pixmap to screen pixmap */
void
-xcopy(int x, int y, int cols, int rows) {
- int src_x = x*xw.cw, src_y = y*xw.ch, src_w = cols*xw.cw, src_h = rows*xw.ch;
- int dst_x = BORDER+src_x, dst_y = BORDER+src_y;
- XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, src_x, src_y, src_w, src_h, dst_x, dst_y);
+xcopy() {
+ XdbeSwapInfo swpinfo[1] = {{xw.win, XdbeCopied}};
+ XdbeSwapBuffers(xw.dpy, swpinfo, 1);
+
}
void
@@ -1902,6 +1907,7 @@ xdrawcursor(void) {
void
draw() {
drawregion(0, 0, term.col, term.row);
+ xcopy();
gettimeofday(&xw.lastdraw, NULL);
}
@@ -1943,7 +1949,6 @@ drawregion(int x1, int y1, int x2, int y2) {
}
if(ib > 0)
xdraws(buf, base, ox, y, ic, ib);
- xcopy(0, y, term.col, 1);
}
xdrawcursor();
}
@@ -1952,13 +1957,10 @@ void
expose(XEvent *ev) {
XExposeEvent *e = &ev->xexpose;
if(xw.state & WIN_REDRAW) {
- if(!e->count) {
+ if(!e->count)
xw.state &= ~WIN_REDRAW;
- xcopy(0, 0, term.col, term.row);
- }
- } else
- XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, e->x-BORDER, e->y-BORDER,
- e->width, e->height, e->x, e->y);
+ }
+ xcopy();
}
void