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Change mouse selection so that after selecting a word, dragging selects

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only words and similar for lines. From Anindya Mukherjee.
This commit is contained in:
nicm
2020-02-24 09:53:59 +00:00
parent 229be034fb
commit f65b9c0d36
1 changed files with 243 additions and 17 deletions
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260
window-copy.c
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@@ -119,8 +119,12 @@ static void window_copy_cursor_jump_to(struct window_mode_entry *);
static void window_copy_cursor_jump_to_back(struct window_mode_entry *);
static void window_copy_cursor_next_word(struct window_mode_entry *,
const char *);
static void window_copy_cursor_next_word_end_pos(struct window_mode_entry *,
const char *, u_int *, u_int *);
static void window_copy_cursor_next_word_end(struct window_mode_entry *,
const char *);
static void window_copy_cursor_previous_word_pos(struct window_mode_entry *,
const char *, int, u_int *, u_int *);
static void window_copy_cursor_previous_word(struct window_mode_entry *,
const char *, int);
static void window_copy_scroll_up(struct window_mode_entry *, u_int);
@@ -227,6 +231,22 @@ struct window_copy_mode_data {
int rectflag; /* in rectangle copy mode? */
int scroll_exit; /* exit on scroll to end? */
enum {
SEL_CHAR, /* select one char at a time */
SEL_WORD, /* select one word at a time */
SEL_LINE, /* select one line at a time */
} selflag;
const char *ws; /* word separators */
u_int dx; /* drag start position */
u_int dy;
u_int selrx; /* selection reset positions */
u_int selry;
u_int endselrx;
u_int endselry;
u_int cx;
u_int cy;
@@ -695,6 +715,9 @@ window_copy_cmd_begin_selection(struct window_copy_cmd_state *cs)
struct client *c = cs->c;
struct mouse_event *m = cs->m;
struct window_copy_mode_data *data = wme->data;
struct options *oo = cs->s->options;
data->ws = options_get_string(oo, "word-separators");
if (m != NULL) {
window_copy_start_drag(c, m);
@@ -1507,12 +1530,19 @@ window_copy_cmd_select_line(struct window_copy_cmd_state *cs)
data->lineflag = LINE_SEL_LEFT_RIGHT;
data->rectflag = 0;
data->selflag = SEL_LINE;
data->dx = data->cx;
data->dy = screen_hsize(data->backing) + data->cy - data->oy;
window_copy_cursor_start_of_line(wme);
data->selrx = data->cx;
data->selry = screen_hsize(data->backing) + data->cy - data->oy;
window_copy_start_selection(wme);
for (; np > 1; np--)
window_copy_cursor_down(wme, 0);
window_copy_cursor_end_of_line(wme);
data->endselrx = data->cx;
data->endselry = screen_hsize(data->backing) + data->cy - data->oy;
return (WINDOW_COPY_CMD_REDRAW);
}
@@ -1524,26 +1554,33 @@ window_copy_cmd_select_word(struct window_copy_cmd_state *cs)
struct session *s = cs->s;
struct window_copy_mode_data *data = wme->data;
const char *ws;
u_int px, py, xx;
u_int px, py;
data->lineflag = LINE_SEL_LEFT_RIGHT;
data->rectflag = 0;
data->selflag = SEL_WORD;
data->dx = data->cx;
data->dy = screen_hsize(data->backing) + data->cy - data->oy;
px = data->cx;
py = screen_hsize(data->backing) + data->cy - data->oy;
xx = window_copy_find_length(wme, py);
ws = options_get_string(s->options, "word-separators");
window_copy_cursor_previous_word(wme, ws, 0);
data->selrx = data->cx;
data->selry = screen_hsize(data->backing) + data->cy - data->oy;
window_copy_start_selection(wme);
if (px >= xx || !window_copy_in_set(wme, px + 1, py, ws))
if (px >= window_copy_find_length(wme, py) ||
!window_copy_in_set(wme, px + 1, py, ws))
window_copy_cursor_next_word_end(wme, ws);
else {
window_copy_update_cursor(wme, px, data->cy);
if (window_copy_update_selection(wme, 1))
window_copy_redraw_lines(wme, data->cy, 1);
}
data->endselrx = data->cx;
data->endselry = screen_hsize(data->backing) + data->cy - data->oy;
return (WINDOW_COPY_CMD_REDRAW);
}
@@ -2788,6 +2825,7 @@ static void
window_copy_redraw_selection(struct window_mode_entry *wme, u_int old_y)
{
struct window_copy_mode_data *data = wme->data;
struct grid *gd = data->backing->grid;
u_int new_y, start, end;
new_y = data->cy;
@@ -2798,6 +2836,16 @@ window_copy_redraw_selection(struct window_mode_entry *wme, u_int old_y)
start = new_y;
end = old_y;
}
/*
* In word selection mode the first word on the line below the cursor
* might be selected, so add this line to the redraw area.
*/
if (data->selflag == SEL_WORD) {
/* Last grid line in data coordinates. */
if (end < gd->sy + data->oy - 1)
end++;
}
window_copy_redraw_lines(wme, start, end - start + 1);
}
@@ -2825,22 +2873,82 @@ window_copy_redraw_screen(struct window_mode_entry *wme)
}
static void
window_copy_synchronize_cursor(struct window_mode_entry *wme)
window_copy_synchronize_cursor_end(struct window_mode_entry *wme)
{
struct window_copy_mode_data *data = wme->data;
u_int xx, yy;
int begin = 0;
xx = data->cx;
yy = screen_hsize(data->backing) + data->cy - data->oy;
switch (data->selflag) {
case SEL_WORD:
xx = data->cx;
if (data->ws == NULL)
break;
if (data->dy > yy || (data->dy == yy && data->dx > xx)) {
/* Right to left selection. */
window_copy_cursor_previous_word_pos(wme, data->ws, 0,
&xx, &yy);
begin = 1;
/* Reset the end. */
data->endselx = data->endselrx;
data->endsely = data->endselry;
} else {
/* Left to right selection. */
if (xx >= window_copy_find_length(wme, yy) ||
!window_copy_in_set(wme, xx + 1, yy, data->ws))
window_copy_cursor_next_word_end_pos(wme,
data->ws, &xx, &yy);
/* Reset the start. */
data->selx = data->selrx;
data->sely = data->selry;
}
break;
case SEL_LINE:
if (data->dy > yy) {
/* Right to left selection. */
xx = 0;
begin = 1;
/* Reset the end. */
data->endselx = data->endselrx;
data->endsely = data->endselry;
} else {
/* Left to right selection. */
xx = window_copy_find_length(wme, yy);
/* Reset the start. */
data->selx = data->selrx;
data->sely = data->selry;
}
break;
case SEL_CHAR:
xx = data->cx;
break;
}
if (begin) {
data->selx = xx;
data->sely = yy;
} else {
data->endselx = xx;
data->endsely = yy;
}
}
static void
window_copy_synchronize_cursor(struct window_mode_entry *wme)
{
struct window_copy_mode_data *data = wme->data;
switch (data->cursordrag) {
case CURSORDRAG_ENDSEL:
data->endselx = xx;
data->endsely = yy;
window_copy_synchronize_cursor_end(wme);
break;
case CURSORDRAG_SEL:
data->selx = xx;
data->sely = yy;
data->selx = data->cx;
data->sely = screen_hsize(data->backing) + data->cy - data->oy;
break;
case CURSORDRAG_NONE:
break;
@@ -3709,6 +3817,55 @@ window_copy_cursor_next_word(struct window_mode_entry *wme,
window_copy_redraw_lines(wme, data->cy, 1);
}
static void
window_copy_cursor_next_word_end_pos(struct window_mode_entry *wme,
const char *separators, u_int *ppx, u_int *ppy)
{
struct window_pane *wp = wme->wp;
struct window_copy_mode_data *data = wme->data;
struct options *oo = wp->window->options;
struct screen *back_s = data->backing;
u_int px, py, xx, yy;
int keys, expected = 1;
px = data->cx;
py = screen_hsize(back_s) + data->cy - data->oy;
xx = window_copy_find_length(wme, py);
yy = screen_hsize(back_s) + screen_size_y(back_s) - 1;
keys = options_get_number(oo, "mode-keys");
if (keys == MODEKEY_VI && !window_copy_in_set(wme, px, py, separators))
px++;
/*
* First skip past any word characters, then any non-word characters.
*
* expected is initially set to 1 for the former and then 0 for the
* latter.
*/
do {
while (px > xx ||
window_copy_in_set(wme, px, py, separators) == expected) {
/* Move down if we're past the end of the line. */
if (px > xx) {
if (py == yy)
return;
py++;
px = 0;
xx = window_copy_find_length(wme, py);
} else
px++;
}
expected = !expected;
} while (expected == 0);
if (keys == MODEKEY_VI && px != 0)
px--;
*ppx = px;
*ppy = py;
}
static void
window_copy_cursor_next_word_end(struct window_mode_entry *wme,
const char *separators)
@@ -3761,6 +3918,54 @@ window_copy_cursor_next_word_end(struct window_mode_entry *wme,
window_copy_redraw_lines(wme, data->cy, 1);
}
/* Compute the previous place where a word begins. */
static void
window_copy_cursor_previous_word_pos(struct window_mode_entry *wme,
const char *separators, int already, u_int *ppx, u_int *ppy)
{
struct window_copy_mode_data *data = wme->data;
u_int px, py;
px = data->cx;
py = screen_hsize(data->backing) + data->cy - data->oy;
/* Move back to the previous word character. */
if (already || window_copy_in_set(wme, px, py, separators)) {
for (;;) {
if (px > 0) {
px--;
if (!window_copy_in_set(wme, px, py,
separators))
break;
} else {
if (data->cy == 0 &&
(screen_hsize(data->backing) == 0 ||
data->oy >=
screen_hsize(data->backing) - 1))
goto out;
py--;
py = screen_hsize(data->backing) + data->cy -
data->oy;
px = window_copy_find_length(wme, py);
/* Stop if separator at EOL. */
if (px > 0 && window_copy_in_set(wme, px - 1,
py, separators))
break;
}
}
}
/* Move back to the beginning of this word. */
while (px > 0 && !window_copy_in_set(wme, px - 1, py, separators))
px--;
out:
*ppx = px;
*ppy = py;
}
/* Move to the previous place where a word begins. */
static void
window_copy_cursor_previous_word(struct window_mode_entry *wme,
@@ -3777,21 +3982,24 @@ window_copy_cursor_previous_word(struct window_mode_entry *wme,
for (;;) {
if (px > 0) {
px--;
if (!window_copy_in_set(wme, px, py, separators))
if (!window_copy_in_set(wme, px, py,
separators))
break;
} else {
if (data->cy == 0 &&
(screen_hsize(data->backing) == 0 ||
data->oy >= screen_hsize(data->backing) - 1))
data->oy >=
screen_hsize(data->backing) - 1))
goto out;
window_copy_cursor_up(wme, 0);
py = screen_hsize(data->backing) + data->cy - data->oy;
py = screen_hsize(data->backing) + data->cy -
data->oy;
px = window_copy_find_length(wme, py);
/* Stop if separator at EOL. */
if (px > 0 &&
window_copy_in_set(wme, px - 1, py, separators))
if (px > 0 && window_copy_in_set(wme, px - 1,
py, separators))
break;
}
}
@@ -3913,6 +4121,7 @@ window_copy_start_drag(struct client *c, struct mouse_event *m)
{
struct window_pane *wp;
struct window_mode_entry *wme;
struct window_copy_mode_data *data;
u_int x, y;
if (c == NULL)
@@ -3933,10 +4142,27 @@ window_copy_start_drag(struct client *c, struct mouse_event *m)
c->tty.mouse_drag_update = window_copy_drag_update;
c->tty.mouse_drag_release = window_copy_drag_release;
window_copy_update_cursor(wme, x, y);
window_copy_start_selection(wme);
window_copy_redraw_screen(wme);
data = wme->data;
switch (data->selflag) {
case SEL_WORD:
if (data->ws) {
window_copy_update_cursor(wme, x, y);
window_copy_cursor_previous_word_pos(wme,
data->ws, 0, &x, &y);
y -= screen_hsize(data->backing) - data->oy;
}
window_copy_update_cursor(wme, x, y);
break;
case SEL_LINE:
window_copy_update_cursor(wme, 0, y);
break;
case SEL_CHAR:
window_copy_update_cursor(wme, x, y);
window_copy_start_selection(wme);
break;
}
window_copy_redraw_screen(wme);
window_copy_drag_update(c, m);
}