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neovim/src/nvim/mouse.c

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// This is an open source non-commercial project. Dear PVS-Studio, please check
// it. PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
#include <assert.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include "nvim/ascii.h"
#include "nvim/buffer.h"
#include "nvim/buffer_defs.h"
#include "nvim/charset.h"
#include "nvim/cursor.h"
#include "nvim/drawscreen.h"
#include "nvim/eval.h"
#include "nvim/eval/typval.h"
#include "nvim/eval/typval_defs.h"
#include "nvim/ex_docmd.h"
#include "nvim/fold.h"
#include "nvim/getchar.h"
#include "nvim/globals.h"
#include "nvim/grid.h"
#include "nvim/keycodes.h"
#include "nvim/macros.h"
#include "nvim/mark.h"
#include "nvim/mbyte.h"
#include "nvim/memline.h"
#include "nvim/menu.h"
#include "nvim/message.h"
#include "nvim/mouse.h"
#include "nvim/move.h"
#include "nvim/normal.h"
#include "nvim/ops.h"
#include "nvim/option.h"
#include "nvim/plines.h"
#include "nvim/pos.h"
#include "nvim/search.h"
#include "nvim/state.h"
#include "nvim/statusline.h"
#include "nvim/strings.h"
#include "nvim/syntax.h"
#include "nvim/types.h"
#include "nvim/ui.h"
#include "nvim/ui_compositor.h"
#include "nvim/vim.h"
#include "nvim/window.h"
#ifdef INCLUDE_GENERATED_DECLARATIONS
# include "mouse.c.generated.h"
#endif
static linenr_T orig_topline = 0;
static int orig_topfill = 0;
/// Get class of a character for selection: same class means same word.
/// 0: blank
/// 1: punctuation groups
/// 2: normal word character
/// >2: multi-byte word character.
static int get_mouse_class(char *p)
{
if (MB_BYTE2LEN((uint8_t)p[0]) > 1) {
return mb_get_class(p);
}
const int c = (uint8_t)(*p);
if (c == ' ' || c == '\t') {
return 0;
}
if (vim_iswordc(c)) {
return 2;
}
// There are a few special cases where we want certain combinations of
// characters to be considered as a single word. These are things like
// "->", "/ *", "*=", "+=", "&=", "<=", ">=", "!=" etc. Otherwise, each
// character is in its own class.
if (c != NUL && vim_strchr("-+*/%<>&|^!=", c) != NULL) {
return 1;
}
return c;
}
/// Move "pos" back to the start of the word it's in.
static void find_start_of_word(pos_T *pos)
{
char *line = ml_get(pos->lnum);
int cclass = get_mouse_class(line + pos->col);
while (pos->col > 0) {
int col = pos->col - 1;
col -= utf_head_off(line, line + col);
if (get_mouse_class(line + col) != cclass) {
break;
}
pos->col = col;
}
}
/// Move "pos" forward to the end of the word it's in.
/// When 'selection' is "exclusive", the position is just after the word.
static void find_end_of_word(pos_T *pos)
{
char *line;
int cclass;
line = ml_get(pos->lnum);
if (*p_sel == 'e' && pos->col > 0) {
pos->col--;
pos->col -= utf_head_off(line, line + pos->col);
}
cclass = get_mouse_class(line + pos->col);
while (line[pos->col] != NUL) {
int col = pos->col + utfc_ptr2len(line + pos->col);
if (get_mouse_class(line + col) != cclass) {
if (*p_sel == 'e') {
pos->col = col;
}
break;
}
pos->col = col;
}
}
/// Move the current tab to tab in same column as mouse or to end of the
/// tabline if there is no tab there.
static void move_tab_to_mouse(void)
{
int tabnr = tab_page_click_defs[mouse_col].tabnr;
if (tabnr <= 0) {
tabpage_move(9999);
} else if (tabnr < tabpage_index(curtab)) {
tabpage_move(tabnr - 1);
} else {
tabpage_move(tabnr);
}
}
/// Call click definition function for column "col" in the "click_defs" array for button
/// "which_button".
static void call_click_def_func(StlClickDefinition *click_defs, int col, int which_button)
{
typval_T argv[] = {
{
.v_lock = VAR_FIXED,
.v_type = VAR_NUMBER,
.vval = {
.v_number = (varnumber_T)click_defs[col].tabnr
},
},
{
.v_lock = VAR_FIXED,
.v_type = VAR_NUMBER,
.vval = {
.v_number = ((mod_mask & MOD_MASK_MULTI_CLICK) == MOD_MASK_4CLICK
? 4
: ((mod_mask & MOD_MASK_MULTI_CLICK) == MOD_MASK_3CLICK
? 3
: ((mod_mask & MOD_MASK_MULTI_CLICK) == MOD_MASK_2CLICK
? 2
: 1)))
},
},
{
.v_lock = VAR_FIXED,
.v_type = VAR_STRING,
.vval = {
.v_string = (which_button == MOUSE_LEFT
? "l"
: (which_button == MOUSE_RIGHT
? "r"
: (which_button == MOUSE_MIDDLE
? "m"
: "?")))
},
},
{
.v_lock = VAR_FIXED,
.v_type = VAR_STRING,
.vval = {
.v_string = (char[]) {
(char)(mod_mask & MOD_MASK_SHIFT ? 's' : ' '),
(char)(mod_mask & MOD_MASK_CTRL ? 'c' : ' '),
(char)(mod_mask & MOD_MASK_ALT ? 'a' : ' '),
(char)(mod_mask & MOD_MASK_META ? 'm' : ' '),
NUL
}
},
}
};
typval_T rettv;
(void)call_vim_function(click_defs[col].func, ARRAY_SIZE(argv), argv, &rettv);
tv_clear(&rettv);
}
/// Translate window coordinates to buffer position without any side effects.
/// Returns IN_BUFFER and sets "mpos->col" to the column when in buffer text.
/// The column is one for the first column.
static int get_fpos_of_mouse(pos_T *mpos)
{
int grid = mouse_grid;
int row = mouse_row;
int col = mouse_col;
if (row < 0 || col < 0) { // check if it makes sense
return IN_UNKNOWN;
}
// find the window where the row is in
win_T *wp = mouse_find_win(&grid, &row, &col);
if (wp == NULL) {
return IN_UNKNOWN;
}
// winpos and height may change in win_enter()!
if (row + wp->w_winbar_height >= wp->w_height) { // In (or below) status line
return IN_STATUS_LINE;
}
if (col >= wp->w_width) { // In vertical separator line
return IN_SEP_LINE;
}
if (wp != curwin) {
return IN_UNKNOWN;
}
// compute the position in the buffer line from the posn on the screen
if (mouse_comp_pos(curwin, &row, &col, &mpos->lnum)) {
return IN_STATUS_LINE; // past bottom
}
mpos->col = vcol2col(wp, mpos->lnum, col);
mpos->coladd = 0;
return IN_BUFFER;
}
/// Do the appropriate action for the current mouse click in the current mode.
/// Not used for Command-line mode.
///
/// Normal and Visual Mode:
/// event modi- position visual change action
/// fier cursor window
/// left press - yes end yes
/// left press C yes end yes "^]" (2)
/// left press S yes end (popup: extend) yes "*" (2)
/// left drag - yes start if moved no
/// left relse - yes start if moved no
/// middle press - yes if not active no put register
/// middle press - yes if active no yank and put
/// right press - yes start or extend yes
/// right press S yes no change yes "#" (2)
/// right drag - yes extend no
/// right relse - yes extend no
///
/// Insert or Replace Mode:
/// event modi- position visual change action
/// fier cursor window
/// left press - yes (cannot be active) yes
/// left press C yes (cannot be active) yes "CTRL-O^]" (2)
/// left press S yes (cannot be active) yes "CTRL-O*" (2)
/// left drag - yes start or extend (1) no CTRL-O (1)
/// left relse - yes start or extend (1) no CTRL-O (1)
/// middle press - no (cannot be active) no put register
/// right press - yes start or extend yes CTRL-O
/// right press S yes (cannot be active) yes "CTRL-O#" (2)
///
/// (1) only if mouse pointer moved since press
/// (2) only if click is in same buffer
///
/// @param oap operator argument, can be NULL
/// @param c K_LEFTMOUSE, etc
/// @param dir Direction to 'put' if necessary
/// @param fixindent PUT_FIXINDENT if fixing indent necessary
///
/// @return true if start_arrow() should be called for edit mode.
bool do_mouse(oparg_T *oap, int c, int dir, long count, bool fixindent)
{
static bool got_click = false; // got a click some time back
int which_button; // MOUSE_LEFT, _MIDDLE or _RIGHT
bool is_click; // If false it's a drag or release event
bool is_drag; // If true it's a drag event
int jump_flags = 0; // flags for jump_to_mouse()
pos_T start_visual;
bool moved; // Has cursor moved?
bool in_winbar; // mouse in window bar
bool in_statuscol; // mouse in status column
bool in_status_line; // mouse in status line
static bool in_tab_line = false; // mouse clicked in tab line
bool in_sep_line; // mouse in vertical separator line
int c1;
win_T *old_curwin = curwin;
static pos_T orig_cursor;
colnr_T leftcol, rightcol;
pos_T end_visual;
int old_active = VIsual_active;
int old_mode = VIsual_mode;
int regname;
pos_T save_cursor = curwin->w_cursor;
for (;;) {
which_button = get_mouse_button(KEY2TERMCAP1(c), &is_click, &is_drag);
if (is_drag) {
// If the next character is the same mouse event then use that
// one. Speeds up dragging the status line.
// Note: Since characters added to the stuff buffer in the code
// below need to come before the next character, do not do this
// when the current character was stuffed.
if (!KeyStuffed && vpeekc() != NUL) {
int nc;
int save_mouse_grid = mouse_grid;
int save_mouse_row = mouse_row;
int save_mouse_col = mouse_col;
// Need to get the character, peeking doesn't get the actual one.
nc = safe_vgetc();
if (c == nc) {
continue;
}
vungetc(nc);
mouse_grid = save_mouse_grid;
mouse_row = save_mouse_row;
mouse_col = save_mouse_col;
}
}
break;
}
if (c == K_MOUSEMOVE) {
// Mouse moved without a button pressed.
return false;
}
// Ignore drag and release events if we didn't get a click.
if (is_click) {
got_click = true;
} else {
if (!got_click) { // didn't get click, ignore
return false;
}
if (!is_drag) { // release, reset got_click
got_click = false;
if (in_tab_line) {
in_tab_line = false;
return false;
}
}
}
// CTRL right mouse button does CTRL-T
if (is_click && (mod_mask & MOD_MASK_CTRL) && which_button == MOUSE_RIGHT) {
if (State & MODE_INSERT) {
stuffcharReadbuff(Ctrl_O);
}
if (count > 1) {
stuffnumReadbuff(count);
}
stuffcharReadbuff(Ctrl_T);
got_click = false; // ignore drag&release now
return false;
}
// CTRL only works with left mouse button
if ((mod_mask & MOD_MASK_CTRL) && which_button != MOUSE_LEFT) {
return false;
}
// When a modifier is down, ignore drag and release events, as well as
// multiple clicks and the middle mouse button.
// Accept shift-leftmouse drags when 'mousemodel' is "popup.*".
if ((mod_mask & (MOD_MASK_SHIFT | MOD_MASK_CTRL | MOD_MASK_ALT
| MOD_MASK_META))
&& (!is_click
|| (mod_mask & MOD_MASK_MULTI_CLICK)
|| which_button == MOUSE_MIDDLE)
&& !((mod_mask & (MOD_MASK_SHIFT|MOD_MASK_ALT))
&& mouse_model_popup()
&& which_button == MOUSE_LEFT)
&& !((mod_mask & MOD_MASK_ALT)
&& !mouse_model_popup()
&& which_button == MOUSE_RIGHT)) {
return false;
}
// If the button press was used as the movement command for an operator (eg
// "d<MOUSE>"), or it is the middle button that is held down, ignore
// drag/release events.
if (!is_click && which_button == MOUSE_MIDDLE) {
return false;
}
if (oap != NULL) {
regname = oap->regname;
} else {
regname = 0;
}
// Middle mouse button does a 'put' of the selected text
if (which_button == MOUSE_MIDDLE) {
if (State == MODE_NORMAL) {
// If an operator was pending, we don't know what the user wanted to do.
// Go back to normal mode: Clear the operator and beep().
if (oap != NULL && oap->op_type != OP_NOP) {
clearopbeep(oap);
return false;
}
// If visual was active, yank the highlighted text and put it
// before the mouse pointer position.
// In Select mode replace the highlighted text with the clipboard.
if (VIsual_active) {
if (VIsual_select) {
stuffcharReadbuff(Ctrl_G);
stuffReadbuff("\"+p");
} else {
stuffcharReadbuff('y');
stuffcharReadbuff(K_MIDDLEMOUSE);
}
return false;
}
// The rest is below jump_to_mouse()
} else if ((State & MODE_INSERT) == 0) {
return false;
}
// Middle click in insert mode doesn't move the mouse, just insert the
// contents of a register. '.' register is special, can't insert that
// with do_put().
// Also paste at the cursor if the current mode isn't in 'mouse' (only
// happens for the GUI).
if ((State & MODE_INSERT)) {
if (regname == '.') {
insert_reg(regname, true);
} else {
if (regname == 0 && eval_has_provider("clipboard")) {
regname = '*';
}
if ((State & REPLACE_FLAG) && !yank_register_mline(regname)) {
insert_reg(regname, true);
} else {
do_put(regname, NULL, BACKWARD, 1L,
(fixindent ? PUT_FIXINDENT : 0) | PUT_CURSEND);
// Repeat it with CTRL-R CTRL-O r or CTRL-R CTRL-P r
AppendCharToRedobuff(Ctrl_R);
AppendCharToRedobuff(fixindent ? Ctrl_P : Ctrl_O);
AppendCharToRedobuff(regname == 0 ? '"' : regname);
}
}
return false;
}
}
// When dragging or button-up stay in the same window.
if (!is_click) {
jump_flags |= MOUSE_FOCUS | MOUSE_DID_MOVE;
}
start_visual.lnum = 0;
if (tab_page_click_defs != NULL) { // only when initialized
// Check for clicking in the tab page line.
if (mouse_grid <= 1 && mouse_row == 0 && firstwin->w_winrow > 0) {
if (is_drag) {
if (in_tab_line) {
move_tab_to_mouse();
}
return false;
}
// click in a tab selects that tab page
if (is_click && cmdwin_type == 0 && mouse_col < Columns) {
in_tab_line = true;
c1 = tab_page_click_defs[mouse_col].tabnr;
switch (tab_page_click_defs[mouse_col].type) {
case kStlClickDisabled:
break;
case kStlClickTabClose: {
tabpage_T *tp;
// Close the current or specified tab page.
if (c1 == 999) {
tp = curtab;
} else {
tp = find_tabpage(c1);
}
if (tp == curtab) {
if (first_tabpage->tp_next != NULL) {
tabpage_close(false);
}
} else if (tp != NULL) {
tabpage_close_other(tp, false);
}
break;
}
case kStlClickTabSwitch:
if ((mod_mask & MOD_MASK_MULTI_CLICK) == MOD_MASK_2CLICK) {
// double click opens new page
end_visual_mode();
tabpage_new();
tabpage_move(c1 == 0 ? 9999 : c1 - 1);
} else {
// Go to specified tab page, or next one if not clicking
// on a label.
goto_tabpage(c1);
// It's like clicking on the status line of a window.
if (curwin != old_curwin) {
end_visual_mode();
}
}
break;
case kStlClickFuncRun:
call_click_def_func(tab_page_click_defs, mouse_col, which_button);
break;
}
}
return true;
} else if (is_drag && in_tab_line) {
move_tab_to_mouse();
return false;
}
}
// When 'mousemodel' is "popup" or "popup_setpos", translate mouse events:
// right button up -> pop-up menu
// shift-left button -> right button
// alt-left button -> alt-right button
if (mouse_model_popup()) {
if (which_button == MOUSE_RIGHT
&& !(mod_mask & (MOD_MASK_SHIFT | MOD_MASK_CTRL))) {
if (!is_click) {
// Ignore right button release events, only shows the popup
// menu on the button down event.
return false;
}
jump_flags = 0;
if (strcmp(p_mousem, "popup_setpos") == 0) {
// First set the cursor position before showing the popup
// menu.
if (VIsual_active) {
pos_T m_pos;
// set MOUSE_MAY_STOP_VIS if we are outside the
// selection or the current window (might have false
// negative here)
if (mouse_row < curwin->w_winrow
|| mouse_row > (curwin->w_winrow + curwin->w_height)) {
jump_flags = MOUSE_MAY_STOP_VIS;
} else if (get_fpos_of_mouse(&m_pos) != IN_BUFFER) {
jump_flags = MOUSE_MAY_STOP_VIS;
} else {
if (VIsual_mode == 'V') {
if ((curwin->w_cursor.lnum <= VIsual.lnum
&& (m_pos.lnum < curwin->w_cursor.lnum || VIsual.lnum < m_pos.lnum))
|| (VIsual.lnum < curwin->w_cursor.lnum
&& (m_pos.lnum < VIsual.lnum || curwin->w_cursor.lnum < m_pos.lnum))) {
jump_flags = MOUSE_MAY_STOP_VIS;
}
} else if ((ltoreq(curwin->w_cursor, VIsual)
&& (lt(m_pos, curwin->w_cursor) || lt(VIsual, m_pos)))
|| (lt(VIsual, curwin->w_cursor)
&& (lt(m_pos, VIsual) || lt(curwin->w_cursor, m_pos)))) {
jump_flags = MOUSE_MAY_STOP_VIS;
} else if (VIsual_mode == Ctrl_V) {
getvcols(curwin, &curwin->w_cursor, &VIsual, &leftcol, &rightcol);
getvcol(curwin, &m_pos, NULL, &m_pos.col, NULL);
if (m_pos.col < leftcol || m_pos.col > rightcol) {
jump_flags = MOUSE_MAY_STOP_VIS;
}
}
}
} else {
jump_flags = MOUSE_MAY_STOP_VIS;
}
}
if (jump_flags) {
jump_flags = jump_to_mouse(jump_flags, NULL, which_button);
redraw_curbuf_later(VIsual_active ? UPD_INVERTED : UPD_VALID);
update_screen();
setcursor();
ui_flush(); // Update before showing popup menu
}
show_popupmenu();
got_click = false; // ignore release events
return (jump_flags & CURSOR_MOVED) != 0;
}
if (which_button == MOUSE_LEFT
&& (mod_mask & (MOD_MASK_SHIFT|MOD_MASK_ALT))) {
which_button = MOUSE_RIGHT;
mod_mask &= ~MOD_MASK_SHIFT;
}
}
if ((State & (MODE_NORMAL | MODE_INSERT))
&& !(mod_mask & (MOD_MASK_SHIFT | MOD_MASK_CTRL))) {
if (which_button == MOUSE_LEFT) {
if (is_click) {
// stop Visual mode for a left click in a window, but not when on a status line
if (VIsual_active) {
jump_flags |= MOUSE_MAY_STOP_VIS;
}
} else {
jump_flags |= MOUSE_MAY_VIS;
}
} else if (which_button == MOUSE_RIGHT) {
if (is_click && VIsual_active) {
// Remember the start and end of visual before moving the cursor.
if (lt(curwin->w_cursor, VIsual)) {
start_visual = curwin->w_cursor;
end_visual = VIsual;
} else {
start_visual = VIsual;
end_visual = curwin->w_cursor;
}
}
jump_flags |= MOUSE_FOCUS;
jump_flags |= MOUSE_MAY_VIS;
}
}
// If an operator is pending, ignore all drags and releases until the next mouse click.
if (!is_drag && oap != NULL && oap->op_type != OP_NOP) {
got_click = false;
oap->motion_type = kMTCharWise;
}
// When releasing the button let jump_to_mouse() know.
if (!is_click && !is_drag) {
jump_flags |= MOUSE_RELEASED;
}
// JUMP!
jump_flags = jump_to_mouse(jump_flags,
oap == NULL ? NULL : &(oap->inclusive),
which_button);
moved = (jump_flags & CURSOR_MOVED);
in_winbar = (jump_flags & MOUSE_WINBAR);
in_statuscol = (jump_flags & MOUSE_STATUSCOL);
in_status_line = (jump_flags & IN_STATUS_LINE);
in_sep_line = (jump_flags & IN_SEP_LINE);
if ((in_winbar || in_status_line || in_statuscol) && is_click) {
// Handle click event on window bar or status lin
int click_grid = mouse_grid;
int click_row = mouse_row;
int click_col = mouse_col;
win_T *wp = mouse_find_win(&click_grid, &click_row, &click_col);
if (wp == NULL) {
return false;
}
StlClickDefinition *click_defs = in_status_line ? wp->w_status_click_defs
: in_winbar ? wp->w_winbar_click_defs
: wp->w_statuscol_click_defs;
if (in_status_line && global_stl_height() > 0) {
// global statusline is displayed for the current window,
// and spans the whole screen.
click_defs = curwin->w_status_click_defs;
click_col = mouse_col;
}
if (click_defs != NULL) {
switch (click_defs[click_col].type) {
case kStlClickDisabled:
break;
case kStlClickFuncRun:
call_click_def_func(click_defs, click_col, which_button);
break;
default:
assert(false && "winbar and statusline only support %@ for clicks");
break;
}
}
return false;
} else if (in_winbar || in_statuscol) {
// A drag or release event in the window bar and status column has no side effects.
return false;
}
// When jumping to another window, clear a pending operator. That's a bit
// friendlier than beeping and not jumping to that window.
if (curwin != old_curwin && oap != NULL && oap->op_type != OP_NOP) {
clearop(oap);
}
if (mod_mask == 0
&& !is_drag
&& (jump_flags & (MOUSE_FOLD_CLOSE | MOUSE_FOLD_OPEN))
&& which_button == MOUSE_LEFT) {
// open or close a fold at this line
if (jump_flags & MOUSE_FOLD_OPEN) {
openFold(curwin->w_cursor, 1L);
} else {
closeFold(curwin->w_cursor, 1L);
}
// don't move the cursor if still in the same window
if (curwin == old_curwin) {
curwin->w_cursor = save_cursor;
}
}
// Set global flag that we are extending the Visual area with mouse dragging;
// temporarily minimize 'scrolloff'.
if (VIsual_active && is_drag && get_scrolloff_value(curwin)) {
// In the very first line, allow scrolling one line
if (mouse_row == 0) {
mouse_dragging = 2;
} else {
mouse_dragging = 1;
}
}
// When dragging the mouse above the window, scroll down.
if (is_drag && mouse_row < 0 && !in_status_line) {
scroll_redraw(false, 1L);
mouse_row = 0;
}
if (start_visual.lnum) { // right click in visual mode
long diff;
// When ALT is pressed make Visual mode blockwise.
if (mod_mask & MOD_MASK_ALT) {
VIsual_mode = Ctrl_V;
}
// In Visual-block mode, divide the area in four, pick up the corner
// that is in the quarter that the cursor is in.
if (VIsual_mode == Ctrl_V) {
getvcols(curwin, &start_visual, &end_visual, &leftcol, &rightcol);
if (curwin->w_curswant > (leftcol + rightcol) / 2) {
end_visual.col = leftcol;
} else {
end_visual.col = rightcol;
}
if (curwin->w_cursor.lnum >=
(start_visual.lnum + end_visual.lnum) / 2) {
end_visual.lnum = start_visual.lnum;
}
// move VIsual to the right column
start_visual = curwin->w_cursor; // save the cursor pos
curwin->w_cursor = end_visual;
coladvance(end_visual.col);
VIsual = curwin->w_cursor;
curwin->w_cursor = start_visual; // restore the cursor
} else {
// If the click is before the start of visual, change the start.
// If the click is after the end of visual, change the end. If
// the click is inside the visual, change the closest side.
if (lt(curwin->w_cursor, start_visual)) {
VIsual = end_visual;
} else if (lt(end_visual, curwin->w_cursor)) {
VIsual = start_visual;
} else {
// In the same line, compare column number
if (end_visual.lnum == start_visual.lnum) {
if (curwin->w_cursor.col - start_visual.col >
end_visual.col - curwin->w_cursor.col) {
VIsual = start_visual;
} else {
VIsual = end_visual;
}
} else {
// In different lines, compare line number
diff = (curwin->w_cursor.lnum - start_visual.lnum) -
(end_visual.lnum - curwin->w_cursor.lnum);
if (diff > 0) { // closest to end
VIsual = start_visual;
} else if (diff < 0) { // closest to start
VIsual = end_visual;
} else { // in the middle line
if (curwin->w_cursor.col <
(start_visual.col + end_visual.col) / 2) {
VIsual = end_visual;
} else {
VIsual = start_visual;
}
}
}
}
}
} else if ((State & MODE_INSERT) && VIsual_active) {
// If Visual mode started in insert mode, execute "CTRL-O"
stuffcharReadbuff(Ctrl_O);
}
// Middle mouse click: Put text before cursor.
if (which_button == MOUSE_MIDDLE) {
int c2;
if (regname == 0 && eval_has_provider("clipboard")) {
regname = '*';
}
if (yank_register_mline(regname)) {
if (mouse_past_bottom) {
dir = FORWARD;
}
} else if (mouse_past_eol) {
dir = FORWARD;
}
if (fixindent) {
c1 = (dir == BACKWARD) ? '[' : ']';
c2 = 'p';
} else {
c1 = (dir == FORWARD) ? 'p' : 'P';
c2 = NUL;
}
prep_redo(regname, count, NUL, c1, NUL, c2, NUL);
// Remember where the paste started, so in edit() Insstart can be set to this position
if (restart_edit != 0) {
where_paste_started = curwin->w_cursor;
}
do_put(regname, NULL, dir, count,
(fixindent ? PUT_FIXINDENT : 0)| PUT_CURSEND);
} else if (((mod_mask & MOD_MASK_CTRL) || (mod_mask & MOD_MASK_MULTI_CLICK) == MOD_MASK_2CLICK)
&& bt_quickfix(curbuf)) {
// Ctrl-Mouse click or double click in a quickfix window jumps to the
// error under the mouse pointer.
if (curwin->w_llist_ref == NULL) { // quickfix window
do_cmdline_cmd(".cc");
} else { // location list window
do_cmdline_cmd(".ll");
}
got_click = false; // ignore drag&release now
} else if ((mod_mask & MOD_MASK_CTRL)
|| (curbuf->b_help && (mod_mask & MOD_MASK_MULTI_CLICK) == MOD_MASK_2CLICK)) {
// Ctrl-Mouse click (or double click in a help window) jumps to the tag
// under the mouse pointer.
if (State & MODE_INSERT) {
stuffcharReadbuff(Ctrl_O);
}
stuffcharReadbuff(Ctrl_RSB);
got_click = false; // ignore drag&release now
} else if ((mod_mask & MOD_MASK_SHIFT)) {
// Shift-Mouse click searches for the next occurrence of the word under
// the mouse pointer
if (State & MODE_INSERT || (VIsual_active && VIsual_select)) {
stuffcharReadbuff(Ctrl_O);
}
if (which_button == MOUSE_LEFT) {
stuffcharReadbuff('*');
} else { // MOUSE_RIGHT
stuffcharReadbuff('#');
}
} else if (in_status_line || in_sep_line) {
// Do nothing if on status line or vertical separator
// Handle double clicks otherwise
} else if ((mod_mask & MOD_MASK_MULTI_CLICK) && (State & (MODE_NORMAL | MODE_INSERT))) {
if (is_click || !VIsual_active) {
if (VIsual_active) {
orig_cursor = VIsual;
} else {
VIsual = curwin->w_cursor;
orig_cursor = VIsual;
VIsual_active = true;
VIsual_reselect = true;
// start Select mode if 'selectmode' contains "mouse"
may_start_select('o');
setmouse();
}
if ((mod_mask & MOD_MASK_MULTI_CLICK) == MOD_MASK_2CLICK) {
// Double click with ALT pressed makes it blockwise.
if (mod_mask & MOD_MASK_ALT) {
VIsual_mode = Ctrl_V;
} else {
VIsual_mode = 'v';
}
} else if ((mod_mask & MOD_MASK_MULTI_CLICK) == MOD_MASK_3CLICK) {
VIsual_mode = 'V';
} else if ((mod_mask & MOD_MASK_MULTI_CLICK) == MOD_MASK_4CLICK) {
VIsual_mode = Ctrl_V;
}
}
// A double click selects a word or a block.
if ((mod_mask & MOD_MASK_MULTI_CLICK) == MOD_MASK_2CLICK) {
pos_T *pos = NULL;
if (is_click) {
// If the character under the cursor (skipping white space) is
// not a word character, try finding a match and select a (),
// {}, [], #if/#endif, etc. block.
end_visual = curwin->w_cursor;
int gc;
while (gc = gchar_pos(&end_visual), ascii_iswhite(gc)) {
inc(&end_visual);
}
if (oap != NULL) {
oap->motion_type = kMTCharWise;
}
if (oap != NULL
&& VIsual_mode == 'v'
&& !vim_iswordc(gchar_pos(&end_visual))
&& equalpos(curwin->w_cursor, VIsual)
&& (pos = findmatch(oap, NUL)) != NULL) {
curwin->w_cursor = *pos;
if (oap->motion_type == kMTLineWise) {
VIsual_mode = 'V';
} else if (*p_sel == 'e') {
if (lt(curwin->w_cursor, VIsual)) {
VIsual.col++;
} else {
curwin->w_cursor.col++;
}
}
}
}
if (pos == NULL && (is_click || is_drag)) {
// When not found a match or when dragging: extend to include a word.
if (lt(curwin->w_cursor, orig_cursor)) {
find_start_of_word(&curwin->w_cursor);
find_end_of_word(&VIsual);
} else {
find_start_of_word(&VIsual);
if (*p_sel == 'e' && *get_cursor_pos_ptr() != NUL) {
curwin->w_cursor.col +=
utfc_ptr2len(get_cursor_pos_ptr());
}
find_end_of_word(&curwin->w_cursor);
}
}
curwin->w_set_curswant = true;
}
if (is_click) {
redraw_curbuf_later(UPD_INVERTED); // update the inversion
}
} else if (VIsual_active && !old_active) {
if (mod_mask & MOD_MASK_ALT) {
VIsual_mode = Ctrl_V;
} else {
VIsual_mode = 'v';
}
}
// If Visual mode changed show it later.
if ((!VIsual_active && old_active && mode_displayed)
|| (VIsual_active && p_smd && msg_silent == 0
&& (!old_active || VIsual_mode != old_mode))) {
redraw_cmdline = true;
}
return moved;
}
/// Return true if "c" is a mouse key.
bool is_mouse_key(int c)
{
return c == K_LEFTMOUSE
|| c == K_LEFTMOUSE_NM
|| c == K_LEFTDRAG
|| c == K_LEFTRELEASE
|| c == K_LEFTRELEASE_NM
|| c == K_MOUSEMOVE
|| c == K_MIDDLEMOUSE
|| c == K_MIDDLEDRAG
|| c == K_MIDDLERELEASE
|| c == K_RIGHTMOUSE
|| c == K_RIGHTDRAG
|| c == K_RIGHTRELEASE
|| c == K_MOUSEDOWN
|| c == K_MOUSEUP
|| c == K_MOUSELEFT
|| c == K_MOUSERIGHT
|| c == K_X1MOUSE
|| c == K_X1DRAG
|| c == K_X1RELEASE
|| c == K_X2MOUSE
|| c == K_X2DRAG
|| c == K_X2RELEASE;
}
/// @return true when 'mousemodel' is set to "popup" or "popup_setpos".
static bool mouse_model_popup(void)
{
return p_mousem[0] == 'p';
}
static win_T *dragwin = NULL; ///< window being dragged
/// Reset the window being dragged. To be called when switching tab page.
void reset_dragwin(void)
{
dragwin = NULL;
}
/// Move the cursor to the specified row and column on the screen.
/// Change current window if necessary. Returns an integer with the
/// CURSOR_MOVED bit set if the cursor has moved or unset otherwise.
///
/// The MOUSE_FOLD_CLOSE bit is set when clicked on the '-' in a fold column.
/// The MOUSE_FOLD_OPEN bit is set when clicked on the '+' in a fold column.
///
/// If flags has MOUSE_FOCUS, then the current window will not be changed, and
/// if the mouse is outside the window then the text will scroll, or if the
/// mouse was previously on a status line, then the status line may be dragged.
///
/// If flags has MOUSE_MAY_VIS, then VIsual mode will be started before the
/// cursor is moved unless the cursor was on a status line or window bar.
/// This function returns one of IN_UNKNOWN, IN_BUFFER, IN_STATUS_LINE or
/// IN_SEP_LINE depending on where the cursor was clicked.
///
/// If flags has MOUSE_MAY_STOP_VIS, then Visual mode will be stopped, unless
/// the mouse is on the status line or window bar of the same window.
///
/// If flags has MOUSE_DID_MOVE, nothing is done if the mouse didn't move since
/// the last call.
///
/// If flags has MOUSE_SETPOS, nothing is done, only the current position is
/// remembered.
///
/// @param inclusive used for inclusive operator, can be NULL
/// @param which_button MOUSE_LEFT, MOUSE_RIGHT, MOUSE_MIDDLE
int jump_to_mouse(int flags, bool *inclusive, int which_button)
{
static int status_line_offset = 0; // #lines offset from status line
static int sep_line_offset = 0; // #cols offset from sep line
static bool on_status_line = false;
static bool on_sep_line = false;
static bool on_winbar = false;
static bool on_statuscol = false;
static int prev_row = -1;
static int prev_col = -1;
static int did_drag = false; // drag was noticed
win_T *wp, *old_curwin;
pos_T old_cursor;
int count;
bool first;
int row = mouse_row;
int col = mouse_col;
int grid = mouse_grid;
int fdc = 0;
bool keep_focus = flags & MOUSE_FOCUS;
mouse_past_bottom = false;
mouse_past_eol = false;
if (flags & MOUSE_RELEASED) {
// On button release we may change window focus if positioned on a
// status line and no dragging happened.
if (dragwin != NULL && !did_drag) {
flags &= ~(MOUSE_FOCUS | MOUSE_DID_MOVE);
}
dragwin = NULL;
did_drag = false;
}
if ((flags & MOUSE_DID_MOVE)
&& prev_row == mouse_row
&& prev_col == mouse_col) {
retnomove:
// before moving the cursor for a left click which is NOT in a status
// line, stop Visual mode
if (status_line_offset) {
return IN_STATUS_LINE;
}
if (sep_line_offset) {
return IN_SEP_LINE;
}
if (on_winbar) {
return IN_OTHER_WIN | MOUSE_WINBAR;
}
if (on_statuscol) {
return IN_OTHER_WIN | MOUSE_STATUSCOL;
}
if (flags & MOUSE_MAY_STOP_VIS) {
end_visual_mode();
redraw_curbuf_later(UPD_INVERTED); // delete the inversion
}
return IN_BUFFER;
}
prev_row = mouse_row;
prev_col = mouse_col;
if (flags & MOUSE_SETPOS) {
goto retnomove; // ugly goto...
}
old_curwin = curwin;
old_cursor = curwin->w_cursor;
if (row < 0 || col < 0) { // check if it makes sense
return IN_UNKNOWN;
}
// find the window where the row is in
wp = mouse_find_win(&grid, &row, &col);
if (wp == NULL) {
return IN_UNKNOWN;
}
bool below_window = grid == DEFAULT_GRID_HANDLE && row + wp->w_winbar_height >= wp->w_height;
on_status_line = (below_window)
? row + wp->w_winbar_height - wp->w_height + 1 == 1
: false;
on_winbar = (row == -1)
? wp->w_winbar_height != 0
: false;
on_statuscol = !below_window && !on_status_line && !on_winbar && col < win_col_off(wp)
? *wp->w_p_stc != NUL
: false;
on_sep_line = grid == DEFAULT_GRID_HANDLE && col >= wp->w_width
? col - wp->w_width + 1 == 1
: false;
// The rightmost character of the status line might be a vertical
// separator character if there is no connecting window to the right.
if (on_status_line && on_sep_line) {
if (stl_connected(wp)) {
on_sep_line = false;
} else {
on_status_line = false;
}
}
if (keep_focus) {
// If we can't change focus, set the value of row, col and grid back to absolute values
// since the values relative to the window are only used when keep_focus is false
row = mouse_row;
col = mouse_col;
grid = mouse_grid;
}
if (!keep_focus) {
if (on_winbar) {
return IN_OTHER_WIN | MOUSE_WINBAR;
}
if (on_statuscol) {
return IN_OTHER_WIN | MOUSE_STATUSCOL;
}
fdc = win_fdccol_count(wp);
dragwin = NULL;
// winpos and height may change in win_enter()!
if (below_window) {
// In (or below) status line
status_line_offset = row + wp->w_winbar_height - wp->w_height + 1;
dragwin = wp;
} else {
status_line_offset = 0;
}
if (grid == DEFAULT_GRID_HANDLE && col >= wp->w_width) {
// In separator line
sep_line_offset = col - wp->w_width + 1;
dragwin = wp;
} else {
sep_line_offset = 0;
}
// The rightmost character of the status line might be a vertical
// separator character if there is no connecting window to the right.
if (status_line_offset && sep_line_offset) {
if (stl_connected(wp)) {
sep_line_offset = 0;
} else {
status_line_offset = 0;
}
}
// Before jumping to another buffer, or moving the cursor for a left
// click, stop Visual mode.
if (VIsual_active
&& (wp->w_buffer != curwin->w_buffer
|| (!status_line_offset
&& !sep_line_offset
&& (wp->w_p_rl
? col < wp->w_width_inner - fdc
: col >= fdc + (cmdwin_type == 0 && wp == curwin ? 0 : 1))
&& (flags & MOUSE_MAY_STOP_VIS)))) {
end_visual_mode();
redraw_curbuf_later(UPD_INVERTED); // delete the inversion
}
if (cmdwin_type != 0 && wp != curwin) {
// A click outside the command-line window: Use modeless
// selection if possible. Allow dragging the status lines.
sep_line_offset = 0;
row = 0;
col += wp->w_wincol;
wp = curwin;
}
// Only change window focus when not clicking on or dragging the
// status line. Do change focus when releasing the mouse button
// (MOUSE_FOCUS was set above if we dragged first).
if (dragwin == NULL || (flags & MOUSE_RELEASED)) {
win_enter(wp, true); // can make wp invalid!
}
// set topline, to be able to check for double click ourselves
if (curwin != old_curwin) {
set_mouse_topline(curwin);
}
if (status_line_offset) { // In (or below) status line
// Don't use start_arrow() if we're in the same window
if (curwin == old_curwin) {
return IN_STATUS_LINE;
}
return IN_STATUS_LINE | CURSOR_MOVED;
}
if (sep_line_offset) { // In (or below) status line
// Don't use start_arrow() if we're in the same window
if (curwin == old_curwin) {
return IN_SEP_LINE;
}
return IN_SEP_LINE | CURSOR_MOVED;
}
curwin->w_cursor.lnum = curwin->w_topline;
} else if (status_line_offset) {
if (which_button == MOUSE_LEFT && dragwin != NULL) {
// Drag the status line
count = row - dragwin->w_winrow - dragwin->w_height + 1
- status_line_offset;
win_drag_status_line(dragwin, count);
did_drag |= count;
}
return IN_STATUS_LINE; // Cursor didn't move
} else if (sep_line_offset && which_button == MOUSE_LEFT) {
if (dragwin != NULL) {
// Drag the separator column
count = col - dragwin->w_wincol - dragwin->w_width + 1
- sep_line_offset;
win_drag_vsep_line(dragwin, count);
did_drag |= count;
}
return IN_SEP_LINE; // Cursor didn't move
} else if (on_status_line && which_button == MOUSE_RIGHT) {
return IN_STATUS_LINE;
} else if (on_winbar && which_button == MOUSE_RIGHT) {
// After a click on the window bar don't start Visual mode.
return IN_OTHER_WIN | MOUSE_WINBAR;
} else if (on_statuscol && which_button == MOUSE_RIGHT) {
// After a click on the status column don't start Visual mode.
return IN_OTHER_WIN | MOUSE_STATUSCOL;
} else {
// keep_window_focus must be true
// before moving the cursor for a left click, stop Visual mode
if (flags & MOUSE_MAY_STOP_VIS) {
end_visual_mode();
redraw_curbuf_later(UPD_INVERTED); // delete the inversion
}
if (grid == 0) {
row -= curwin->w_grid_alloc.comp_row + curwin->w_grid.row_offset;
col -= curwin->w_grid_alloc.comp_col + curwin->w_grid.col_offset;
} else if (grid != DEFAULT_GRID_HANDLE) {
row -= curwin->w_grid.row_offset;
col -= curwin->w_grid.col_offset;
}
// When clicking beyond the end of the window, scroll the screen.
// Scroll by however many rows outside the window we are.
if (row < 0) {
count = 0;
for (first = true; curwin->w_topline > 1;) {
if (curwin->w_topfill < win_get_fill(curwin, curwin->w_topline)) {
count++;
} else {
count += plines_win(curwin, curwin->w_topline - 1, true);
}
if (!first && count > -row) {
break;
}
first = false;
(void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL);
if (curwin->w_topfill < win_get_fill(curwin, curwin->w_topline)) {
curwin->w_topfill++;
} else {
curwin->w_topline--;
curwin->w_topfill = 0;
}
}
check_topfill(curwin, false);
curwin->w_valid &=
~(VALID_WROW|VALID_CROW|VALID_BOTLINE|VALID_BOTLINE_AP);
redraw_later(curwin, UPD_VALID);
row = 0;
} else if (row >= curwin->w_height_inner) {
count = 0;
for (first = true; curwin->w_topline < curbuf->b_ml.ml_line_count;) {
if (curwin->w_topfill > 0) {
count++;
} else {
count += plines_win(curwin, curwin->w_topline, true);
}
if (!first && count > row - curwin->w_height_inner + 1) {
break;
}
first = false;
if (hasFolding(curwin->w_topline, NULL, &curwin->w_topline)
&& curwin->w_topline == curbuf->b_ml.ml_line_count) {
break;
}
if (curwin->w_topfill > 0) {
curwin->w_topfill--;
} else {
curwin->w_topline++;
curwin->w_topfill = win_get_fill(curwin, curwin->w_topline);
}
}
check_topfill(curwin, false);
redraw_later(curwin, UPD_VALID);
curwin->w_valid &=
~(VALID_WROW|VALID_CROW|VALID_BOTLINE|VALID_BOTLINE_AP);
row = curwin->w_height_inner - 1;
} else if (row == 0) {
// When dragging the mouse, while the text has been scrolled up as
// far as it goes, moving the mouse in the top line should scroll
// the text down (done later when recomputing w_topline).
if (mouse_dragging > 0
&& curwin->w_cursor.lnum
== curwin->w_buffer->b_ml.ml_line_count
&& curwin->w_cursor.lnum == curwin->w_topline) {
curwin->w_valid &= ~(VALID_TOPLINE);
}
}
}
// compute the position in the buffer line from the posn on the screen
if (mouse_comp_pos(curwin, &row, &col, &curwin->w_cursor.lnum)) {
mouse_past_bottom = true;
}
if (!(flags & MOUSE_RELEASED) && which_button == MOUSE_LEFT) {
col = mouse_adjust_click(curwin, row, col);
}
// Start Visual mode before coladvance(), for when 'sel' != "old"
if ((flags & MOUSE_MAY_VIS) && !VIsual_active) {
VIsual = old_cursor;
VIsual_active = true;
VIsual_reselect = true;
// if 'selectmode' contains "mouse", start Select mode
may_start_select('o');
setmouse();
if (p_smd && msg_silent == 0) {
redraw_cmdline = true; // show visual mode later
}
}
curwin->w_curswant = col;
curwin->w_set_curswant = false; // May still have been true
if (coladvance(col) == FAIL) { // Mouse click beyond end of line
if (inclusive != NULL) {
*inclusive = true;
}
mouse_past_eol = true;
} else if (inclusive != NULL) {
*inclusive = false;
}
count = IN_BUFFER;
if (curwin != old_curwin || curwin->w_cursor.lnum != old_cursor.lnum
|| curwin->w_cursor.col != old_cursor.col) {
count |= CURSOR_MOVED; // Cursor has moved
}
count |= mouse_check_fold();
return count;
}
// Compute the position in the buffer line from the posn on the screen in
// window "win".
// Returns true if the position is below the last line.
bool mouse_comp_pos(win_T *win, int *rowp, int *colp, linenr_T *lnump)
{
int col = *colp;
int row = *rowp;
bool retval = false;
int count;
if (win->w_p_rl) {
col = win->w_width_inner - 1 - col;
}
linenr_T lnum = win->w_topline;
while (row > 0) {
// Don't include filler lines in "count"
if (win_may_fill(win)
&& !hasFoldingWin(win, lnum, NULL, NULL, true, NULL)) {
if (lnum == win->w_topline) {
row -= win->w_topfill;
} else {
row -= win_get_fill(win, lnum);
}
count = plines_win_nofill(win, lnum, true);
} else {
count = plines_win(win, lnum, true);
}
if (count > row) {
break; // Position is in this buffer line.
}
(void)hasFoldingWin(win, lnum, NULL, &lnum, true, NULL);
if (lnum == win->w_buffer->b_ml.ml_line_count) {
retval = true;
break; // past end of file
}
row -= count;
lnum++;
}
if (!retval) {
// Compute the column without wrapping.
int off = win_col_off(win) - win_col_off2(win);
if (col < off) {
col = off;
}
col += row * (win->w_width_inner - off);
// add skip column (for long wrapping line)
col += win->w_skipcol;
}
if (!win->w_p_wrap) {
col += win->w_leftcol;
}
// skip line number and fold column in front of the line
col -= win_col_off(win);
if (col <= 0) {
col = 0;
}
*colp = col;
*rowp = row;
*lnump = lnum;
return retval;
}
/// Find the window at "grid" position "*rowp" and "*colp". The positions are
/// updated to become relative to the top-left of the window.
///
/// @return NULL when something is wrong.
win_T *mouse_find_win(int *gridp, int *rowp, int *colp)
{
win_T *wp_grid = mouse_find_grid_win(gridp, rowp, colp);
if (wp_grid) {
return wp_grid;
} else if (*gridp > 1) {
return NULL;
}
frame_T *fp = topframe;
*rowp -= firstwin->w_winrow;
for (;;) {
if (fp->fr_layout == FR_LEAF) {
break;
}
if (fp->fr_layout == FR_ROW) {
for (fp = fp->fr_child; fp->fr_next != NULL; fp = fp->fr_next) {
if (*colp < fp->fr_width) {
break;
}
*colp -= fp->fr_width;
}
} else { // fr_layout == FR_COL
for (fp = fp->fr_child; fp->fr_next != NULL; fp = fp->fr_next) {
if (*rowp < fp->fr_height) {
break;
}
*rowp -= fp->fr_height;
}
}
}
// When using a timer that closes a window the window might not actually
// exist.
FOR_ALL_WINDOWS_IN_TAB(wp, curtab) {
if (wp == fp->fr_win) {
*rowp -= wp->w_winbar_height;
return wp;
}
}
return NULL;
}
static win_T *mouse_find_grid_win(int *gridp, int *rowp, int *colp)
{
if (*gridp == msg_grid.handle) {
*rowp += msg_grid_pos;
*gridp = DEFAULT_GRID_HANDLE;
} else if (*gridp > 1) {
win_T *wp = get_win_by_grid_handle(*gridp);
if (wp && wp->w_grid_alloc.chars
&& !(wp->w_floating && !wp->w_float_config.focusable)) {
*rowp = MIN(*rowp - wp->w_grid.row_offset, wp->w_grid.rows - 1);
*colp = MIN(*colp - wp->w_grid.col_offset, wp->w_grid.cols - 1);
return wp;
}
} else if (*gridp == 0) {
ScreenGrid *grid = ui_comp_mouse_focus(*rowp, *colp);
FOR_ALL_WINDOWS_IN_TAB(wp, curtab) {
if (&wp->w_grid_alloc != grid) {
continue;
}
*gridp = grid->handle;
*rowp -= grid->comp_row + wp->w_grid.row_offset;
*colp -= grid->comp_col + wp->w_grid.col_offset;
return wp;
}
// no float found, click on the default grid
// TODO(bfredl): grid can be &pum_grid, allow select pum items by mouse?
*gridp = DEFAULT_GRID_HANDLE;
}
return NULL;
}
/// Convert a virtual (screen) column to a character column.
/// The first column is one.
colnr_T vcol2col(win_T *const wp, const linenr_T lnum, const colnr_T vcol)
FUNC_ATTR_NONNULL_ALL FUNC_ATTR_WARN_UNUSED_RESULT
{
// try to advance to the specified column
char *line = ml_get_buf(wp->w_buffer, lnum, false);
chartabsize_T cts;
init_chartabsize_arg(&cts, wp, lnum, 0, line, line);
while (cts.cts_vcol < vcol && *cts.cts_ptr != NUL) {
cts.cts_vcol += win_lbr_chartabsize(&cts, NULL);
MB_PTR_ADV(cts.cts_ptr);
}
clear_chartabsize_arg(&cts);
return (colnr_T)(cts.cts_ptr - line);
}
/// Set UI mouse depending on current mode and 'mouse'.
///
/// Emits mouse_on/mouse_off UI event (unless 'mouse' is empty).
void setmouse(void)
{
ui_cursor_shape();
ui_check_mouse();
}
// Set orig_topline. Used when jumping to another window, so that a double
// click still works.
static void set_mouse_topline(win_T *wp)
{
orig_topline = wp->w_topline;
orig_topfill = wp->w_topfill;
}
///
/// Return length of line "lnum" for horizontal scrolling.
///
static colnr_T scroll_line_len(linenr_T lnum)
{
colnr_T col = 0;
char *line = ml_get(lnum);
if (*line != NUL) {
for (;;) {
int numchar = win_chartabsize(curwin, line, col);
MB_PTR_ADV(line);
if (*line == NUL) { // don't count the last character
break;
}
col += numchar;
}
}
return col;
}
///
/// Find longest visible line number.
///
static linenr_T find_longest_lnum(void)
{
linenr_T ret = 0;
// Calculate maximum for horizontal scrollbar. Check for reasonable
// line numbers, topline and botline can be invalid when displaying is
// postponed.
if (curwin->w_topline <= curwin->w_cursor.lnum
&& curwin->w_botline > curwin->w_cursor.lnum
&& curwin->w_botline <= curbuf->b_ml.ml_line_count + 1) {
long max = 0;
// Use maximum of all visible lines. Remember the lnum of the
// longest line, closest to the cursor line. Used when scrolling
// below.
for (linenr_T lnum = curwin->w_topline; lnum < curwin->w_botline; lnum++) {
colnr_T len = scroll_line_len(lnum);
if (len > (colnr_T)max) {
max = len;
ret = lnum;
} else if (len == (colnr_T)max
&& abs(lnum - curwin->w_cursor.lnum)
< abs(ret - curwin->w_cursor.lnum)) {
ret = lnum;
}
}
} else {
// Use cursor line only.
ret = curwin->w_cursor.lnum;
}
return ret;
}
/// Do a horizontal scroll.
/// @return true if the cursor moved, false otherwise.
bool mouse_scroll_horiz(int dir)
{
if (curwin->w_p_wrap) {
return false;
}
int step = (int)p_mousescroll_hor;
if (mod_mask & (MOD_MASK_SHIFT | MOD_MASK_CTRL)) {
step = curwin->w_width_inner;
}
int leftcol = curwin->w_leftcol + (dir == MSCR_RIGHT ? -step : +step);
if (leftcol < 0) {
leftcol = 0;
}
if (curwin->w_leftcol == leftcol) {
return false;
}
curwin->w_leftcol = (colnr_T)leftcol;
// When the line of the cursor is too short, move the cursor to the
// longest visible line.
if (!virtual_active()
&& (colnr_T)leftcol > scroll_line_len(curwin->w_cursor.lnum)) {
curwin->w_cursor.lnum = find_longest_lnum();
curwin->w_cursor.col = 0;
}
return leftcol_changed();
}
/// Adjusts the clicked column position when 'conceallevel' > 0
static int mouse_adjust_click(win_T *wp, int row, int col)
{
if (!(wp->w_p_cole > 0 && curbuf->b_p_smc > 0
&& wp->w_leftcol < curbuf->b_p_smc && conceal_cursor_line(wp))) {
return col;
}
// `col` is the position within the current line that is highlighted by the
// cursor without consideration for concealed characters. The current line is
// scanned *up to* `col`, nudging it left or right when concealed characters
// are encountered.
//
// win_chartabsize() is used to keep track of the virtual column position
// relative to the line's bytes. For example: if col == 9 and the line
// starts with a tab that's 8 columns wide, we would want the cursor to be
// highlighting the second byte, not the ninth.
linenr_T lnum = wp->w_cursor.lnum;
char *line = ml_get(lnum);
char *ptr = line;
char *ptr_end;
char *ptr_row_offset = line; // Where we begin adjusting `ptr_end`
// Find the offset where scanning should begin.
int offset = wp->w_leftcol;
if (row > 0) {
offset += row * (wp->w_width_inner - win_col_off(wp) - win_col_off2(wp) -
wp->w_leftcol + wp->w_skipcol);
}
int vcol;
if (offset) {
// Skip everything up to an offset since nvim takes care of displaying the
// correct portion of the line when horizontally scrolling.
// When 'wrap' is enabled, only the row (of the wrapped line) needs to be
// checked for concealed characters.
vcol = 0;
while (vcol < offset && *ptr != NUL) {
vcol += win_chartabsize(curwin, ptr, vcol);
ptr += utfc_ptr2len(ptr);
}
ptr_row_offset = ptr;
}
// Align `ptr_end` with `col`
vcol = offset;
ptr_end = ptr_row_offset;
while (vcol < col && *ptr_end != NUL) {
vcol += win_chartabsize(curwin, ptr_end, vcol);
ptr_end += utfc_ptr2len(ptr_end);
}
int prev_matchid;
int nudge = 0;
vcol = offset;
#define INCR() nudge++; ptr_end += utfc_ptr2len((char *)ptr_end)
#define DECR() nudge--; ptr_end -= utfc_ptr2len((char *)ptr_end)
while (ptr < ptr_end && *ptr != NUL) {
int cwidth = win_chartabsize(curwin, ptr, vcol);
vcol += cwidth;
if (cwidth > 1 && *ptr == '\t' && nudge > 0) {
// A tab will "absorb" any previous adjustments.
cwidth = MIN(cwidth, nudge);
while (cwidth > 0) {
DECR();
cwidth--;
}
}
int matchid = syn_get_concealed_id(wp, lnum, (colnr_T)(ptr - line));
if (matchid != 0) {
if (wp->w_p_cole == 3) {
INCR();
} else {
if (!(row > 0 && ptr == ptr_row_offset)
&& (wp->w_p_cole == 1 || (wp->w_p_cole == 2
&& (wp->w_p_lcs_chars.conceal != NUL
|| syn_get_sub_char() != NUL)))) {
// At least one placeholder character will be displayed.
DECR();
}
prev_matchid = matchid;
while (prev_matchid == matchid && *ptr != NUL) {
INCR();
ptr += utfc_ptr2len(ptr);
matchid = syn_get_concealed_id(wp, lnum, (colnr_T)(ptr - line));
}
continue;
}
}
ptr += utfc_ptr2len(ptr);
}
return col + nudge;
}
// Check clicked cell is foldcolumn
int mouse_check_fold(void)
{
int click_grid = mouse_grid;
int click_row = mouse_row;
int click_col = mouse_col;
int mouse_char = ' ';
int max_row = Rows;
int max_col = Columns;
int multigrid = ui_has(kUIMultigrid);
win_T *wp = mouse_find_win(&click_grid, &click_row, &click_col);
if (wp && multigrid) {
max_row = wp->w_grid_alloc.rows;
max_col = wp->w_grid_alloc.cols;
}
if (wp && mouse_row >= 0 && mouse_row < max_row
&& mouse_col >= 0 && mouse_col < max_col) {
ScreenGrid *gp = multigrid ? &wp->w_grid_alloc : &default_grid;
int fdc = win_fdccol_count(wp);
int row = multigrid && mouse_grid == 0 ? click_row : mouse_row;
int col = multigrid && mouse_grid == 0 ? click_col : mouse_col;
// Remember the character under the mouse, might be one of foldclose or
// foldopen fillchars in the fold column.
if (gp->chars != NULL) {
mouse_char = utf_ptr2char((char *)gp->chars[gp->line_offset[row]
+ (unsigned)col]);
}
// Check for position outside of the fold column.
if (wp->w_p_rl ? click_col < wp->w_width_inner - fdc :
click_col >= fdc + (cmdwin_type == 0 ? 0 : 1)) {
mouse_char = ' ';
}
}
if (wp && mouse_char == wp->w_p_fcs_chars.foldclosed) {
return MOUSE_FOLD_OPEN;
} else if (mouse_char != ' ') {
return MOUSE_FOLD_CLOSE;
}
return 0;
}
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