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clipboard.c
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clipboard.c
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/* vi:set ts=8 sts=4 sw=4 noet:
*
* VIM - Vi IMproved by Bram Moolenaar
*
* Do ":help uganda" in Vim to read copying and usage conditions.
* Do ":help credits" in Vim to see a list of people who contributed.
* See README.txt for an overview of the Vim source code.
*/
/*
* clipboard.c: Functions to handle the clipboard
*/
#include "vim.h"
#ifdef FEAT_CYGWIN_WIN32_CLIPBOARD
# define WIN32_LEAN_AND_MEAN
# include <windows.h>
# include "winclip.pro"
#endif
// Functions for copying and pasting text between applications.
// This is always included in a GUI version, but may also be included when the
// clipboard and mouse is available to a terminal version such as xterm.
// Note: there are some more functions in ops.c that handle selection stuff.
//
// Also note that the majority of functions here deal with the X 'primary'
// (visible - for Visual mode use) selection, and only that. There are no
// versions of these for the 'clipboard' selection, as Visual mode has no use
// for them.
#if defined(FEAT_CLIPBOARD) || defined(PROTO)
/*
* Selection stuff using Visual mode, for cutting and pasting text to other
* windows.
*/
/*
* Call this to initialise the clipboard. Pass it FALSE if the clipboard code
* is included, but the clipboard can not be used, or TRUE if the clipboard can
* be used. Eg unix may call this with FALSE, then call it again with TRUE if
* the GUI starts.
*/
void
clip_init(int can_use)
{
Clipboard_T *cb;
cb = &clip_star;
for (;;)
{
cb->available = can_use;
cb->owned = FALSE;
cb->start.lnum = 0;
cb->start.col = 0;
cb->end.lnum = 0;
cb->end.col = 0;
cb->state = SELECT_CLEARED;
if (cb == &clip_plus)
break;
cb = &clip_plus;
}
}
/*
* Check whether the VIsual area has changed, and if so try to become the owner
* of the selection, and free any old converted selection we may still have
* lying around. If the VIsual mode has ended, make a copy of what was
* selected so we can still give it to others. Will probably have to make sure
* this is called whenever VIsual mode is ended.
*/
void
clip_update_selection(Clipboard_T *clip)
{
pos_T start, end;
// If visual mode is only due to a redo command ("."), then ignore it
if (!redo_VIsual_busy && VIsual_active && (State & MODE_NORMAL))
{
if (LT_POS(VIsual, curwin->w_cursor))
{
start = VIsual;
end = curwin->w_cursor;
if (has_mbyte)
end.col += (*mb_ptr2len)(ml_get_cursor()) - 1;
}
else
{
start = curwin->w_cursor;
end = VIsual;
}
if (!EQUAL_POS(clip->start, start)
|| !EQUAL_POS(clip->end, end)
|| clip->vmode != VIsual_mode)
{
clip_clear_selection(clip);
clip->start = start;
clip->end = end;
clip->vmode = VIsual_mode;
clip_free_selection(clip);
clip_own_selection(clip);
clip_gen_set_selection(clip);
}
}
}
static int
clip_gen_own_selection(Clipboard_T *cbd)
{
#ifdef FEAT_XCLIPBOARD
# ifdef FEAT_GUI
if (gui.in_use)
return clip_mch_own_selection(cbd);
else
# endif
return clip_xterm_own_selection(cbd);
#else
return clip_mch_own_selection(cbd);
#endif
}
void
clip_own_selection(Clipboard_T *cbd)
{
/*
* Also want to check somehow that we are reading from the keyboard rather
* than a mapping etc.
*/
#ifdef FEAT_X11
// Always own the selection, we might have lost it without being
// notified, e.g. during a ":sh" command.
if (cbd->available)
{
int was_owned = cbd->owned;
cbd->owned = (clip_gen_own_selection(cbd) == OK);
if (!was_owned && (cbd == &clip_star || cbd == &clip_plus))
{
// May have to show a different kind of highlighting for the
// selected area. There is no specific redraw command for this,
// just redraw all windows on the current buffer.
if (cbd->owned
&& (get_real_state() == MODE_VISUAL
|| get_real_state() == MODE_SELECT)
&& (cbd == &clip_star ? clip_isautosel_star()
: clip_isautosel_plus())
&& HL_ATTR(HLF_V) != HL_ATTR(HLF_VNC))
redraw_curbuf_later(UPD_INVERTED_ALL);
}
}
#else
// Only own the clipboard when we didn't own it yet.
if (!cbd->owned && cbd->available)
cbd->owned = (clip_gen_own_selection(cbd) == OK);
#endif
}
static void
clip_gen_lose_selection(Clipboard_T *cbd)
{
#ifdef FEAT_XCLIPBOARD
# ifdef FEAT_GUI
if (gui.in_use)
clip_mch_lose_selection(cbd);
else
# endif
clip_xterm_lose_selection(cbd);
#else
clip_mch_lose_selection(cbd);
#endif
}
void
clip_lose_selection(Clipboard_T *cbd)
{
#ifdef FEAT_X11
int was_owned = cbd->owned;
#endif
int visual_selection = FALSE;
if (cbd == &clip_star || cbd == &clip_plus)
visual_selection = TRUE;
clip_free_selection(cbd);
cbd->owned = FALSE;
if (visual_selection)
clip_clear_selection(cbd);
clip_gen_lose_selection(cbd);
#ifdef FEAT_X11
if (visual_selection)
{
// May have to show a different kind of highlighting for the selected
// area. There is no specific redraw command for this, just redraw all
// windows on the current buffer.
if (was_owned
&& (get_real_state() == MODE_VISUAL
|| get_real_state() == MODE_SELECT)
&& (cbd == &clip_star ?
clip_isautosel_star() : clip_isautosel_plus())
&& HL_ATTR(HLF_V) != HL_ATTR(HLF_VNC)
&& !exiting)
{
update_curbuf(UPD_INVERTED_ALL);
setcursor();
cursor_on();
out_flush_cursor(TRUE, FALSE);
}
}
#endif
}
static void
clip_copy_selection(Clipboard_T *clip)
{
if (VIsual_active && (State & MODE_NORMAL) && clip->available)
{
clip_update_selection(clip);
clip_free_selection(clip);
clip_own_selection(clip);
if (clip->owned)
clip_get_selection(clip);
clip_gen_set_selection(clip);
}
}
/*
* Save and restore clip_unnamed before doing possibly many changes. This
* prevents accessing the clipboard very often which might slow down Vim
* considerably.
*/
static int global_change_count = 0; // if set, inside a start_global_changes
static int clipboard_needs_update = FALSE; // clipboard needs to be updated
static int clip_did_set_selection = TRUE;
/*
* Save clip_unnamed and reset it.
*/
void
start_global_changes(void)
{
if (++global_change_count > 1)
return;
clip_unnamed_saved = clip_unnamed;
clipboard_needs_update = FALSE;
if (clip_did_set_selection)
{
clip_unnamed = 0;
clip_did_set_selection = FALSE;
}
}
/*
* Return TRUE if setting the clipboard was postponed, it already contains the
* right text.
*/
static int
is_clipboard_needs_update()
{
return clipboard_needs_update;
}
/*
* Restore clip_unnamed and set the selection when needed.
*/
void
end_global_changes(void)
{
if (--global_change_count > 0)
// recursive
return;
if (!clip_did_set_selection)
{
clip_did_set_selection = TRUE;
clip_unnamed = clip_unnamed_saved;
clip_unnamed_saved = 0;
if (clipboard_needs_update)
{
// only store something in the clipboard,
// if we have yanked anything to it
if (clip_unnamed & CLIP_UNNAMED)
{
clip_own_selection(&clip_star);
clip_gen_set_selection(&clip_star);
}
if (clip_unnamed & CLIP_UNNAMED_PLUS)
{
clip_own_selection(&clip_plus);
clip_gen_set_selection(&clip_plus);
}
}
}
clipboard_needs_update = FALSE;
}
/*
* Called when Visual mode is ended: update the selection.
*/
void
clip_auto_select(void)
{
if (clip_isautosel_star())
clip_copy_selection(&clip_star);
if (clip_isautosel_plus())
clip_copy_selection(&clip_plus);
}
/*
* Return TRUE if automatic selection of Visual area is desired for the *
* register.
*/
int
clip_isautosel_star(void)
{
return (
#ifdef FEAT_GUI
gui.in_use ? (vim_strchr(p_go, GO_ASEL) != NULL) :
#endif
clip_autoselect_star);
}
/*
* Return TRUE if automatic selection of Visual area is desired for the +
* register.
*/
int
clip_isautosel_plus(void)
{
return (
#ifdef FEAT_GUI
gui.in_use ? (vim_strchr(p_go, GO_ASELPLUS) != NULL) :
#endif
clip_autoselect_plus);
}
/*
* Stuff for general mouse selection, without using Visual mode.
*/
/*
* Compare two screen positions ala strcmp()
*/
static int
clip_compare_pos(
int row1,
int col1,
int row2,
int col2)
{
if (row1 > row2) return(1);
if (row1 < row2) return(-1);
if (col1 > col2) return(1);
if (col1 < col2) return(-1);
return(0);
}
// "how" flags for clip_invert_area()
#define CLIP_CLEAR 1
#define CLIP_SET 2
#define CLIP_TOGGLE 3
/*
* Invert or un-invert a rectangle of the screen.
* "invert" is true if the result is inverted.
*/
static void
clip_invert_rectangle(
Clipboard_T *cbd UNUSED,
int row_arg,
int col_arg,
int height_arg,
int width_arg,
int invert)
{
int row = row_arg;
int col = col_arg;
int height = height_arg;
int width = width_arg;
#ifdef FEAT_PROP_POPUP
// this goes on top of all popup windows
screen_zindex = CLIP_ZINDEX;
if (col < cbd->min_col)
{
width -= cbd->min_col - col;
col = cbd->min_col;
}
if (width > cbd->max_col - col)
width = cbd->max_col - col;
if (row < cbd->min_row)
{
height -= cbd->min_row - row;
row = cbd->min_row;
}
if (height > cbd->max_row - row + 1)
height = cbd->max_row - row + 1;
#endif
#ifdef FEAT_GUI
if (gui.in_use)
gui_mch_invert_rectangle(row, col, height, width);
else
#endif
screen_draw_rectangle(row, col, height, width, invert);
#ifdef FEAT_PROP_POPUP
screen_zindex = 0;
#endif
}
/*
* Invert a region of the display between a starting and ending row and column
* Values for "how":
* CLIP_CLEAR: undo inversion
* CLIP_SET: set inversion
* CLIP_TOGGLE: set inversion if pos1 < pos2, undo inversion otherwise.
* 0: invert (GUI only).
*/
static void
clip_invert_area(
Clipboard_T *cbd,
int row1,
int col1,
int row2,
int col2,
int how)
{
int invert = FALSE;
int max_col;
#ifdef FEAT_PROP_POPUP
max_col = cbd->max_col - 1;
#else
max_col = Columns - 1;
#endif
if (how == CLIP_SET)
invert = TRUE;
// Swap the from and to positions so the from is always before
if (clip_compare_pos(row1, col1, row2, col2) > 0)
{
int tmp_row, tmp_col;
tmp_row = row1;
tmp_col = col1;
row1 = row2;
col1 = col2;
row2 = tmp_row;
col2 = tmp_col;
}
else if (how == CLIP_TOGGLE)
invert = TRUE;
// If all on the same line, do it the easy way
if (row1 == row2)
{
clip_invert_rectangle(cbd, row1, col1, 1, col2 - col1, invert);
}
else
{
// Handle a piece of the first line
if (col1 > 0)
{
clip_invert_rectangle(cbd, row1, col1, 1,
(int)Columns - col1, invert);
row1++;
}
// Handle a piece of the last line
if (col2 < max_col)
{
clip_invert_rectangle(cbd, row2, 0, 1, col2, invert);
row2--;
}
// Handle the rectangle that's left
if (row2 >= row1)
clip_invert_rectangle(cbd, row1, 0, row2 - row1 + 1,
(int)Columns, invert);
}
}
/*
* Start, continue or end a modeless selection. Used when editing the
* command-line, in the cmdline window and when the mouse is in a popup window.
*/
void
clip_modeless(int button, int is_click, int is_drag)
{
int repeat;
repeat = ((clip_star.mode == SELECT_MODE_CHAR
|| clip_star.mode == SELECT_MODE_LINE)
&& (mod_mask & MOD_MASK_2CLICK))
|| (clip_star.mode == SELECT_MODE_WORD
&& (mod_mask & MOD_MASK_3CLICK));
if (is_click && button == MOUSE_RIGHT)
{
// Right mouse button: If there was no selection, start one.
// Otherwise extend the existing selection.
if (clip_star.state == SELECT_CLEARED)
clip_start_selection(mouse_col, mouse_row, FALSE);
clip_process_selection(button, mouse_col, mouse_row, repeat);
}
else if (is_click)
clip_start_selection(mouse_col, mouse_row, repeat);
else if (is_drag)
{
// Don't try extending a selection if there isn't one. Happens when
// button-down is in the cmdline and them moving mouse upwards.
if (clip_star.state != SELECT_CLEARED)
clip_process_selection(button, mouse_col, mouse_row, repeat);
}
else // release
clip_process_selection(MOUSE_RELEASE, mouse_col, mouse_row, FALSE);
}
/*
* Update the currently selected region by adding and/or subtracting from the
* beginning or end and inverting the changed area(s).
*/
static void
clip_update_modeless_selection(
Clipboard_T *cb,
int row1,
int col1,
int row2,
int col2)
{
// See if we changed at the beginning of the selection
if (row1 != cb->start.lnum || col1 != (int)cb->start.col)
{
clip_invert_area(cb, row1, col1, (int)cb->start.lnum, cb->start.col,
CLIP_TOGGLE);
cb->start.lnum = row1;
cb->start.col = col1;
}
// See if we changed at the end of the selection
if (row2 != cb->end.lnum || col2 != (int)cb->end.col)
{
clip_invert_area(cb, (int)cb->end.lnum, cb->end.col, row2, col2,
CLIP_TOGGLE);
cb->end.lnum = row2;
cb->end.col = col2;
}
}
/*
* Find the starting and ending positions of the word at the given row and
* column. Only white-separated words are recognized here.
*/
#define CHAR_CLASS(c) (c <= ' ' ? ' ' : vim_iswordc(c))
static void
clip_get_word_boundaries(Clipboard_T *cb, int row, int col)
{
int start_class;
int temp_col;
char_u *p;
int mboff;
if (row >= screen_Rows || col >= screen_Columns || ScreenLines == NULL)
return;
p = ScreenLines + LineOffset[row];
// Correct for starting in the right half of a double-wide char
if (enc_dbcs != 0)
col -= dbcs_screen_head_off(p, p + col);
else if (enc_utf8 && p[col] == 0)
--col;
start_class = CHAR_CLASS(p[col]);
temp_col = col;
for ( ; temp_col > 0; temp_col--)
if (enc_dbcs != 0
&& (mboff = dbcs_screen_head_off(p, p + temp_col - 1)) > 0)
temp_col -= mboff;
else if (CHAR_CLASS(p[temp_col - 1]) != start_class
&& !(enc_utf8 && p[temp_col - 1] == 0))
break;
cb->word_start_col = temp_col;
temp_col = col;
for ( ; temp_col < screen_Columns; temp_col++)
if (enc_dbcs != 0 && dbcs_ptr2cells(p + temp_col) == 2)
++temp_col;
else if (CHAR_CLASS(p[temp_col]) != start_class
&& !(enc_utf8 && p[temp_col] == 0))
break;
cb->word_end_col = temp_col;
}
/*
* Find the column position for the last non-whitespace character on the given
* line at or before start_col.
*/
static int
clip_get_line_end(Clipboard_T *cbd UNUSED, int row)
{
int i;
if (row >= screen_Rows || ScreenLines == NULL)
return 0;
for (i =
#ifdef FEAT_PROP_POPUP
cbd->max_col;
#else
screen_Columns;
#endif
i > 0; i--)
if (ScreenLines[LineOffset[row] + i - 1] != ' ')
break;
return i;
}
/*
* Start the selection
*/
void
clip_start_selection(int col, int row, int repeated_click)
{
Clipboard_T *cb = &clip_star;
#ifdef FEAT_PROP_POPUP
win_T *wp;
int row_cp = row;
int col_cp = col;
wp = mouse_find_win(&row_cp, &col_cp, FIND_POPUP);
if (wp != NULL && WIN_IS_POPUP(wp)
&& popup_is_in_scrollbar(wp, row_cp, col_cp))
// click or double click in scrollbar does not start a selection
return;
#endif
if (cb->state == SELECT_DONE)
clip_clear_selection(cb);
row = check_row(row);
col = check_col(col);
col = mb_fix_col(col, row);
cb->start.lnum = row;
cb->start.col = col;
cb->end = cb->start;
cb->origin_row = (short_u)cb->start.lnum;
cb->state = SELECT_IN_PROGRESS;
#ifdef FEAT_PROP_POPUP
if (wp != NULL && WIN_IS_POPUP(wp))
{
// Click in a popup window restricts selection to that window,
// excluding the border.
cb->min_col = wp->w_wincol + wp->w_popup_border[3];
cb->max_col = wp->w_wincol + popup_width(wp)
- wp->w_popup_border[1] - wp->w_has_scrollbar;
if (cb->max_col > screen_Columns)
cb->max_col = screen_Columns;
cb->min_row = wp->w_winrow + wp->w_popup_border[0];
cb->max_row = wp->w_winrow + popup_height(wp) - 1
- wp->w_popup_border[2];
}
else
{
cb->min_col = 0;
cb->max_col = screen_Columns;
cb->min_row = 0;
cb->max_row = screen_Rows;
}
#endif
if (repeated_click)
{
if (++cb->mode > SELECT_MODE_LINE)
cb->mode = SELECT_MODE_CHAR;
}
else
cb->mode = SELECT_MODE_CHAR;
#ifdef FEAT_GUI
// clear the cursor until the selection is made
if (gui.in_use)
gui_undraw_cursor();
#endif
switch (cb->mode)
{
case SELECT_MODE_CHAR:
cb->origin_start_col = cb->start.col;
cb->word_end_col = clip_get_line_end(cb, (int)cb->start.lnum);
break;
case SELECT_MODE_WORD:
clip_get_word_boundaries(cb, (int)cb->start.lnum, cb->start.col);
cb->origin_start_col = cb->word_start_col;
cb->origin_end_col = cb->word_end_col;
clip_invert_area(cb, (int)cb->start.lnum, cb->word_start_col,
(int)cb->end.lnum, cb->word_end_col, CLIP_SET);
cb->start.col = cb->word_start_col;
cb->end.col = cb->word_end_col;
break;
case SELECT_MODE_LINE:
clip_invert_area(cb, (int)cb->start.lnum, 0, (int)cb->start.lnum,
(int)Columns, CLIP_SET);
cb->start.col = 0;
cb->end.col = Columns;
break;
}
cb->prev = cb->start;
#ifdef DEBUG_SELECTION
printf("Selection started at (%ld,%d)\n", cb->start.lnum, cb->start.col);
#endif
}
/*
* Continue processing the selection
*/
void
clip_process_selection(
int button,
int col,
int row,
int_u repeated_click)
{
Clipboard_T *cb = &clip_star;
int diff;
int slen = 1; // cursor shape width
if (button == MOUSE_RELEASE)
{
if (cb->state != SELECT_IN_PROGRESS)
return;
// Check to make sure we have something selected
if (cb->start.lnum == cb->end.lnum && cb->start.col == cb->end.col)
{
#ifdef FEAT_GUI
if (gui.in_use)
gui_update_cursor(FALSE, FALSE);
#endif
cb->state = SELECT_CLEARED;
return;
}
#ifdef DEBUG_SELECTION
printf("Selection ended: (%ld,%d) to (%ld,%d)\n", cb->start.lnum,
cb->start.col, cb->end.lnum, cb->end.col);
#endif
if (clip_isautosel_star()
|| (
#ifdef FEAT_GUI
gui.in_use ? (vim_strchr(p_go, GO_ASELML) != NULL) :
#endif
clip_autoselectml))
clip_copy_modeless_selection(FALSE);
#ifdef FEAT_GUI
if (gui.in_use)
gui_update_cursor(FALSE, FALSE);
#endif
cb->state = SELECT_DONE;
return;
}
row = check_row(row);
col = check_col(col);
col = mb_fix_col(col, row);
if (col == (int)cb->prev.col && row == cb->prev.lnum && !repeated_click)
return;
/*
* When extending the selection with the right mouse button, swap the
* start and end if the position is before half the selection
*/
if (cb->state == SELECT_DONE && button == MOUSE_RIGHT)
{
/*
* If the click is before the start, or the click is inside the
* selection and the start is the closest side, set the origin to the
* end of the selection.
*/
if (clip_compare_pos(row, col, (int)cb->start.lnum, cb->start.col) < 0
|| (clip_compare_pos(row, col,
(int)cb->end.lnum, cb->end.col) < 0
&& (((cb->start.lnum == cb->end.lnum
&& cb->end.col - col > col - cb->start.col))
|| ((diff = (cb->end.lnum - row) -
(row - cb->start.lnum)) > 0
|| (diff == 0 && col < (int)(cb->start.col +
cb->end.col) / 2)))))
{
cb->origin_row = (short_u)cb->end.lnum;
cb->origin_start_col = cb->end.col - 1;
cb->origin_end_col = cb->end.col;
}
else
{
cb->origin_row = (short_u)cb->start.lnum;
cb->origin_start_col = cb->start.col;
cb->origin_end_col = cb->start.col;
}
if (cb->mode == SELECT_MODE_WORD && !repeated_click)
cb->mode = SELECT_MODE_CHAR;
}
// set state, for when using the right mouse button
cb->state = SELECT_IN_PROGRESS;
#ifdef DEBUG_SELECTION
printf("Selection extending to (%d,%d)\n", row, col);
#endif
if (repeated_click && ++cb->mode > SELECT_MODE_LINE)
cb->mode = SELECT_MODE_CHAR;
switch (cb->mode)
{
case SELECT_MODE_CHAR:
// If we're on a different line, find where the line ends
if (row != cb->prev.lnum)
cb->word_end_col = clip_get_line_end(cb, row);
// See if we are before or after the origin of the selection
if (clip_compare_pos(row, col, cb->origin_row,
cb->origin_start_col) >= 0)
{
if (col >= (int)cb->word_end_col)
clip_update_modeless_selection(cb, cb->origin_row,
cb->origin_start_col, row, (int)Columns);
else
{
if (has_mbyte && mb_lefthalve(row, col))
slen = 2;
clip_update_modeless_selection(cb, cb->origin_row,
cb->origin_start_col, row, col + slen);
}
}
else
{
if (has_mbyte
&& mb_lefthalve(cb->origin_row, cb->origin_start_col))
slen = 2;
if (col >= (int)cb->word_end_col)
clip_update_modeless_selection(cb, row, cb->word_end_col,
cb->origin_row, cb->origin_start_col + slen);
else
clip_update_modeless_selection(cb, row, col,
cb->origin_row, cb->origin_start_col + slen);
}
break;
case SELECT_MODE_WORD:
// If we are still within the same word, do nothing
if (row == cb->prev.lnum && col >= (int)cb->word_start_col
&& col < (int)cb->word_end_col && !repeated_click)
return;
// Get new word boundaries
clip_get_word_boundaries(cb, row, col);
// Handle being after the origin point of selection
if (clip_compare_pos(row, col, cb->origin_row,
cb->origin_start_col) >= 0)
clip_update_modeless_selection(cb, cb->origin_row,
cb->origin_start_col, row, cb->word_end_col);
else
clip_update_modeless_selection(cb, row, cb->word_start_col,
cb->origin_row, cb->origin_end_col);
break;
case SELECT_MODE_LINE:
if (row == cb->prev.lnum && !repeated_click)
return;
if (clip_compare_pos(row, col, cb->origin_row,
cb->origin_start_col) >= 0)
clip_update_modeless_selection(cb, cb->origin_row, 0, row,
(int)Columns);
else
clip_update_modeless_selection(cb, row, 0, cb->origin_row,
(int)Columns);
break;
}
cb->prev.lnum = row;
cb->prev.col = col;
#ifdef DEBUG_SELECTION
printf("Selection is: (%ld,%d) to (%ld,%d)\n", cb->start.lnum,
cb->start.col, cb->end.lnum, cb->end.col);
#endif
}
# if defined(FEAT_GUI) || defined(PROTO)
/*
* Redraw part of the selection if character at "row,col" is inside of it.
* Only used for the GUI.
*/
void
clip_may_redraw_selection(int row, int col, int len)
{
int start = col;
int end = col + len;
if (clip_star.state != SELECT_CLEARED
&& row >= clip_star.start.lnum
&& row <= clip_star.end.lnum)
{
if (row == clip_star.start.lnum && start < (int)clip_star.start.col)
start = clip_star.start.col;
if (row == clip_star.end.lnum && end > (int)clip_star.end.col)
end = clip_star.end.col;
if (end > start)
clip_invert_area(&clip_star, row, start, row, end, 0);
}
}
# endif
/*
* Called from outside to clear selected region from the display
*/
void
clip_clear_selection(Clipboard_T *cbd)
{
if (cbd->state == SELECT_CLEARED)
return;
clip_invert_area(cbd, (int)cbd->start.lnum, cbd->start.col,
(int)cbd->end.lnum, cbd->end.col, CLIP_CLEAR);
cbd->state = SELECT_CLEARED;
}
/*
* Clear the selection if any lines from "row1" to "row2" are inside of it.
*/
void
clip_may_clear_selection(int row1, int row2)
{
if (clip_star.state == SELECT_DONE
&& row2 >= clip_star.start.lnum
&& row1 <= clip_star.end.lnum)
clip_clear_selection(&clip_star);
}
/*
* Called before the screen is scrolled up or down. Adjusts the line numbers
* of the selection. Call with big number when clearing the screen.
*/
void
clip_scroll_selection(
int rows) // negative for scroll down
{
int lnum;
if (clip_star.state == SELECT_CLEARED)
return;
lnum = clip_star.start.lnum - rows;
if (lnum <= 0)
clip_star.start.lnum = 0;
else if (lnum >= screen_Rows) // scrolled off of the screen
clip_star.state = SELECT_CLEARED;
else
clip_star.start.lnum = lnum;
lnum = clip_star.end.lnum - rows;
if (lnum < 0) // scrolled off of the screen
clip_star.state = SELECT_CLEARED;
else if (lnum >= screen_Rows)
clip_star.end.lnum = screen_Rows - 1;
else
clip_star.end.lnum = lnum;
}
/*
* Copy the currently selected area into the '*' register so it will be
* available for pasting.
* When "both" is TRUE also copy to the '+' register.
*/
void
clip_copy_modeless_selection(int both UNUSED)
{
char_u *buffer;
char_u *bufp;
int row;
int start_col;
int end_col;
int line_end_col;
int add_newline_flag = FALSE;
int len;
char_u *p;
int row1 = clip_star.start.lnum;