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708d0bff91
There is currently no provision for scrollback content in the core code, leaving that to backend video drivers where this can be highly optimized. There is currently no common method for those drivers to tell the core what part of the scrollback is actually displayed and what size the scrollback buffer is either. Because of that, the unicode screen buffer has no provision for any scrollback. At least we can provide backtranslated glyph values when the scrollback is active which should be plenty good enough for now. Signed-off-by: Nicolas Pitre <nico@linaro.org> Tested-by: Dave Mielke <Dave@mielke.cc> Acked-by: Adam Borowski <kilobyte@angband.pl> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
51 lines
1.6 KiB
C
51 lines
1.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* selection.h
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*
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* Interface between console.c, tty_io.c, vt.c, vc_screen.c and selection.c
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*/
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#ifndef _LINUX_SELECTION_H_
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#define _LINUX_SELECTION_H_
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#include <linux/tiocl.h>
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#include <linux/vt_buffer.h>
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struct tty_struct;
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extern struct vc_data *sel_cons;
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struct tty_struct;
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extern void clear_selection(void);
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extern int set_selection(const struct tiocl_selection __user *sel, struct tty_struct *tty);
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extern int paste_selection(struct tty_struct *tty);
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extern int sel_loadlut(char __user *p);
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extern int mouse_reporting(void);
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extern void mouse_report(struct tty_struct * tty, int butt, int mrx, int mry);
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extern int console_blanked;
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extern const unsigned char color_table[];
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extern unsigned char default_red[];
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extern unsigned char default_grn[];
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extern unsigned char default_blu[];
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extern unsigned short *screen_pos(struct vc_data *vc, int w_offset, int viewed);
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extern u16 screen_glyph(struct vc_data *vc, int offset);
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extern void complement_pos(struct vc_data *vc, int offset);
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extern void invert_screen(struct vc_data *vc, int offset, int count, int shift);
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extern void getconsxy(struct vc_data *vc, unsigned char *p);
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extern void putconsxy(struct vc_data *vc, unsigned char *p);
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extern u16 vcs_scr_readw(struct vc_data *vc, const u16 *org);
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extern void vcs_scr_writew(struct vc_data *vc, u16 val, u16 *org);
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extern void vcs_scr_updated(struct vc_data *vc);
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extern int vc_uniscr_check(struct vc_data *vc);
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extern void vc_uniscr_copy_line(struct vc_data *vc, void *dest, int viewed,
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unsigned int row, unsigned int col,
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unsigned int nr);
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#endif
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