diff options
Diffstat (limited to 'src/nvim/mouse.c')
| -rw-r--r-- | src/nvim/mouse.c | 438 |
1 files changed, 438 insertions, 0 deletions
diff --git a/src/nvim/mouse.c b/src/nvim/mouse.c new file mode 100644 index 0000000000..7fc581a7c0 --- /dev/null +++ b/src/nvim/mouse.c @@ -0,0 +1,438 @@ +#include <stdbool.h> + +#include "nvim/mouse.h" +#include "nvim/vim.h" +#include "nvim/screen.h" +#include "nvim/window.h" +#include "nvim/term.h" +#include "nvim/fold.h" +#include "nvim/diff.h" +#include "nvim/move.h" +#include "nvim/misc1.h" +#include "nvim/cursor.h" +#include "nvim/buffer_defs.h" + +#ifdef INCLUDE_GENERATED_DECLARATIONS +# include "mouse.c.generated.h" +#endif + +// 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. +// 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 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. +int jump_to_mouse(int flags, + bool *inclusive, // used for inclusive operator, can be NULL + int which_button) // MOUSE_LEFT, MOUSE_RIGHT, MOUSE_MIDDLE +{ + static int on_status_line = 0; // #lines below bottom of window + static int on_sep_line = 0; // on separator right of window + static int prev_row = -1; + static int prev_col = -1; + static win_T *dragwin = NULL; // window being dragged + 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 mouse_char; + + 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 (on_status_line) + return IN_STATUS_LINE; + if (on_sep_line) + return IN_SEP_LINE; + if (flags & MOUSE_MAY_STOP_VIS) { + end_visual_mode(); + redraw_curbuf_later(INVERTED); // delete the inversion + } + return IN_BUFFER; + } + + prev_row = mouse_row; + prev_col = mouse_col; + + if (flags & MOUSE_SETPOS) + goto retnomove; // ugly goto... + + // Remember the character under the mouse, it might be a '-' or '+' in the + // fold column. + if (row >= 0 && row < Rows && col >= 0 && col <= Columns + && ScreenLines != NULL) + mouse_char = ScreenLines[LineOffset[row] + (unsigned)col]; + else + mouse_char = ' '; + + old_curwin = curwin; + old_cursor = curwin->w_cursor; + + if (!(flags & MOUSE_FOCUS)) { + 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(&row, &col); + dragwin = NULL; + // winpos and height may change in win_enter()! + if (row >= wp->w_height) { // In (or below) status line + on_status_line = row - wp->w_height + 1; + dragwin = wp; + } else { + on_status_line = 0; + } + + if (col >= wp->w_width) { // In separator line + on_sep_line = col - wp->w_width + 1; + dragwin = wp; + } else { + on_sep_line = 0; + } + + // 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 = 0; + else + on_status_line = 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 + || (!on_status_line + && !on_sep_line + && ( + wp->w_p_rl ? col < wp->w_width - wp->w_p_fdc : + col >= wp->w_p_fdc + + (cmdwin_type == 0 && wp == + curwin ? 0 : 1) + ) + && (flags & MOUSE_MAY_STOP_VIS)))) { + end_visual_mode(); + redraw_curbuf_later(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. + on_sep_line = 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! +# ifdef CHECK_DOUBLE_CLICK + // set topline, to be able to check for double click ourselves + if (curwin != old_curwin) + set_mouse_topline(curwin); +# endif + if (on_status_line) { // 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; + else + return IN_STATUS_LINE | CURSOR_MOVED; + } + if (on_sep_line) { // 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; + else + return IN_SEP_LINE | CURSOR_MOVED; + } + + curwin->w_cursor.lnum = curwin->w_topline; + } else if (on_status_line && which_button == MOUSE_LEFT) { + if (dragwin != NULL) { + // Drag the status line + count = row - dragwin->w_winrow - dragwin->w_height + 1 + - on_status_line; + win_drag_status_line(dragwin, count); + did_drag |= count; + } + return IN_STATUS_LINE; // Cursor didn't move + } else if (on_sep_line && which_button == MOUSE_LEFT) { + if (dragwin != NULL) { + // Drag the separator column + count = col - dragwin->w_wincol - dragwin->w_width + 1 + - on_sep_line; + win_drag_vsep_line(dragwin, count); + did_drag |= count; + } + return IN_SEP_LINE; // Cursor didn't move + } 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(INVERTED); // delete the inversion + } + + + row -= curwin->w_winrow; + col -= curwin->w_wincol; + + // 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 < diff_check(curwin, curwin->w_topline)) + ++count; + else + count += plines(curwin->w_topline - 1); + if (!first && count > -row) + break; + first = false; + hasFolding(curwin->w_topline, &curwin->w_topline, NULL); + if (curwin->w_topfill < diff_check(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(VALID); + row = 0; + } else if (row >= curwin->w_height) { + count = 0; + for (first = true; curwin->w_topline < curbuf->b_ml.ml_line_count; ) { + if (curwin->w_topfill > 0) { + ++count; + } else { + count += plines(curwin->w_topline); + } + + if (!first && count > row - curwin->w_height + 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 = + diff_check_fill(curwin, curwin->w_topline); + } + } + check_topfill(curwin, false); + redraw_later(VALID); + curwin->w_valid &= + ~(VALID_WROW|VALID_CROW|VALID_BOTLINE|VALID_BOTLINE_AP); + row = curwin->w_height - 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); + } + } + } + + // Check for position outside of the fold column. + if (curwin->w_p_rl ? col < curwin->w_width - curwin->w_p_fdc : + col >= curwin->w_p_fdc + (cmdwin_type == 0 ? 0 : 1)) { + mouse_char = ' '; + } + + // 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; + } + + // Start Visual mode before coladvance(), for when 'sel' != "old" + if ((flags & MOUSE_MAY_VIS) && !VIsual_active) { + check_visual_highlight(); + 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 + } + + if (mouse_char == '+') { + count |= MOUSE_FOLD_OPEN; + } else if (mouse_char != ' ') { + count |= MOUSE_FOLD_CLOSE; + } + + 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; + linenr_T lnum; + bool retval = false; + int off; + int count; + + if (win->w_p_rl) + col = win->w_width - 1 - col; + + lnum = win->w_topline; + + while (row > 0) { + // Don't include filler lines in "count" + if (win->w_p_diff + && !hasFoldingWin(win, lnum, NULL, NULL, true, NULL)) { + if (lnum == win->w_topline) { + row -= win->w_topfill; + } else { + row -= diff_check_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. + off = win_col_off(win) - win_col_off2(win); + if (col < off) + col = off; + col += row * (win->w_width - 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 screen position "*rowp" and "*colp". The positions are +// updated to become relative to the top-left of the window. +win_T *mouse_find_win(int *rowp, int *colp) +{ + frame_T *fp; + + 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; + } + } + } + return fp->fr_win; +} |