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https://codeberg.org/dnkl/foot.git
synced 2026-02-05 04:06:08 -05:00
7fedf2f801
Moving the mouse outside the grid while we have an on-going selection now starts a timer. The interval of this timer depends on the mouse’s distance from the grid - the further away the mouse is, the shorter interval. On each timer timeout, we scroll one line, and update the selection. Thus, the shorter the interval, the faster we scroll. The timer is canceled as soon as the mouse enters the grid again, or the selection is either canceled or finalized. The timer FD is created and destroyed on-demand. Most of the logic is now in selection.c. The exception is the calculation of the timer interval, which depends on the mouse’s position. Thus, this is done in input.c. The scroll+selection update logic needs to know a) which direction we’re scrolling in, and b) which *column* the selection should be updated with. If the mouse is outside the grid’s left or right margins, the stored mouse column will be -1. I.e. we don’t know whether the mouse is on the left or right side of the grid. This is why the caller, that starts the timer, must provide this value. The same applies to top and bottom margins, but since we already have the scroll *direction*, which row value to use can be derived from this.
596 lines
16 KiB
C
596 lines
16 KiB
C
#pragma once
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#include <stdint.h>
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#include <stdbool.h>
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#include <stddef.h>
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#include <wchar.h>
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#include <threads.h>
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#include <semaphore.h>
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#include <tllist.h>
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#include <fcft/fcft.h>
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//#include "config.h"
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#include "fdm.h"
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#include "macros.h"
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#include "reaper.h"
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#include "wayland.h"
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/*
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* Note: we want the cells to be as small as possible. Larger cells
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* means fewer scrollback lines (or performance drops due to cache
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* misses)
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*
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* Note that the members are laid out optimized for x86
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*/
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struct attributes {
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uint32_t bold:1;
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uint32_t dim:1;
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uint32_t italic:1;
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uint32_t underline:1;
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uint32_t strikethrough:1;
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uint32_t blink:1;
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uint32_t conceal:1;
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uint32_t reverse:1;
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uint32_t fg:24;
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uint32_t clean:1;
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uint32_t have_fg:1;
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uint32_t have_bg:1;
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uint32_t selected:2;
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uint32_t reserved:3;
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uint32_t bg:24;
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};
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static_assert(sizeof(struct attributes) == 8, "bad size");
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#define CELL_COMB_CHARS_LO 0x40000000ul
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#define CELL_COMB_CHARS_HI 0x400ffffful
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#define CELL_MULT_COL_SPACER 0x40100000ul
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struct cell {
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wchar_t wc;
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struct attributes attrs;
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};
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static_assert(sizeof(struct cell) == 12, "bad size");
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struct scroll_region {
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int start;
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int end;
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};
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struct coord {
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int col;
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int row;
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};
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struct cursor {
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struct coord point;
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bool lcf;
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};
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enum damage_type {DAMAGE_SCROLL, DAMAGE_SCROLL_REVERSE,
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DAMAGE_SCROLL_IN_VIEW, DAMAGE_SCROLL_REVERSE_IN_VIEW};
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struct damage {
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enum damage_type type;
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struct scroll_region region;
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int lines;
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};
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struct composed {
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wchar_t base;
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wchar_t combining[5];
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uint8_t count;
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};
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struct row {
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struct cell *cells;
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bool dirty;
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bool linebreak;
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};
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struct sixel {
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void *data;
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pixman_image_t *pix;
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int width;
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int height;
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int rows;
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int cols;
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struct coord pos;
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};
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struct grid {
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int num_rows;
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int num_cols;
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int offset;
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int view;
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struct cursor cursor;
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struct cursor saved_cursor;
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struct row **rows;
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struct row *cur_row;
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tll(struct damage) scroll_damage;
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tll(struct sixel) sixel_images;
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};
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struct vt_subparams {
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unsigned value[16];
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uint8_t idx;
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};
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struct vt_param {
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unsigned value;
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struct vt_subparams sub;
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};
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struct vt {
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int state; /* enum state */
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wchar_t last_printed;
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wchar_t utf8;
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struct {
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struct vt_param v[16];
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uint8_t idx;
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} params;
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char private[2];
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struct {
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uint8_t *data;
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size_t size;
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size_t idx;
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} osc;
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struct {
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uint8_t *data;
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size_t size;
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size_t idx;
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void (*put_handler)(struct terminal *term, uint8_t c);
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void (*unhook_handler)(struct terminal *term);
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} dcs;
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struct attributes attrs;
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struct attributes saved_attrs;
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};
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enum cursor_origin { ORIGIN_ABSOLUTE, ORIGIN_RELATIVE };
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enum cursor_keys { CURSOR_KEYS_DONTCARE, CURSOR_KEYS_NORMAL, CURSOR_KEYS_APPLICATION };
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enum keypad_keys { KEYPAD_DONTCARE, KEYPAD_NUMERICAL, KEYPAD_APPLICATION };
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enum charset { CHARSET_ASCII, CHARSET_GRAPHIC };
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struct charsets {
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int selected;
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enum charset set[4]; /* G0-G3 */
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};
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/* *What* to report */
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enum mouse_tracking {
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MOUSE_NONE,
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MOUSE_X10, /* ?9h */
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MOUSE_CLICK, /* ?1000h - report mouse clicks */
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MOUSE_DRAG, /* ?1002h - report clicks and drag motions */
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MOUSE_MOTION, /* ?1003h - report clicks and motion */
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};
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/* *How* to report */
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enum mouse_reporting {
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MOUSE_NORMAL,
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MOUSE_UTF8, /* ?1005h */
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MOUSE_SGR, /* ?1006h */
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MOUSE_URXVT, /* ?1015h */
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};
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enum cursor_style { CURSOR_BLOCK, CURSOR_UNDERLINE, CURSOR_BAR };
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enum selection_kind { SELECTION_NONE, SELECTION_NORMAL, SELECTION_BLOCK };
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enum selection_direction {SELECTION_UNDIR, SELECTION_LEFT, SELECTION_RIGHT};
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enum selection_scroll_direction {SELECTION_SCROLL_UP, SELECTION_SCROLL_DOWN};
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struct ptmx_buffer {
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void *data;
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size_t len;
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size_t idx;
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};
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enum term_surface {
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TERM_SURF_NONE,
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TERM_SURF_GRID,
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TERM_SURF_SEARCH,
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TERM_SURF_SCROLLBACK_INDICATOR,
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TERM_SURF_RENDER_TIMER,
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TERM_SURF_TITLE,
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TERM_SURF_BORDER_LEFT,
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TERM_SURF_BORDER_RIGHT,
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TERM_SURF_BORDER_TOP,
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TERM_SURF_BORDER_BOTTOM,
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TERM_SURF_BUTTON_MINIMIZE,
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TERM_SURF_BUTTON_MAXIMIZE,
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TERM_SURF_BUTTON_CLOSE,
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};
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typedef tll(struct ptmx_buffer) ptmx_buffer_list_t;
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struct terminal {
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struct fdm *fdm;
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struct reaper *reaper;
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const struct config *conf;
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pid_t slave;
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int ptmx;
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bool quit;
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struct grid normal;
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struct grid alt;
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struct grid *grid;
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size_t composed_count;
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struct composed *composed;
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struct fcft_font *fonts[4];
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struct config_font *font_sizes;
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float font_dpi;
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enum fcft_subpixel font_subpixel;
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bool is_sending_paste_data;
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ptmx_buffer_list_t ptmx_buffers;
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ptmx_buffer_list_t ptmx_paste_buffers;
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enum cursor_origin origin;
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enum cursor_keys cursor_keys_mode;
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enum keypad_keys keypad_keys_mode;
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bool reverse;
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bool hide_cursor;
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bool reverse_wrap;
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bool auto_margin;
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bool insert_mode;
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bool bracketed_paste;
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bool focus_events;
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bool alt_scrolling;
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enum mouse_tracking mouse_tracking;
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enum mouse_reporting mouse_reporting;
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struct {
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bool esc_prefix;
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bool eight_bit;
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} meta;
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/* Saved DECSET modes - we save the SET state */
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struct {
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uint32_t origin:1;
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uint32_t application_cursor_keys:1;
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uint32_t reverse:1;
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uint32_t show_cursor:1;
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uint32_t reverse_wrap:1;
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uint32_t auto_margin:1;
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uint32_t cursor_blink:1;
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uint32_t bracketed_paste:1;
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uint32_t focus_events:1;
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uint32_t alt_scrolling:1;
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//uint32_t mouse_x10:1;
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uint32_t mouse_click:1;
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uint32_t mouse_drag:1;
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uint32_t mouse_motion:1;
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//uint32_t mouse_utf8:1;
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uint32_t mouse_sgr:1;
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uint32_t mouse_urxvt:1;
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uint32_t meta_eight_bit:1;
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uint32_t meta_esc_prefix:1;
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uint32_t alt_screen:1;
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} xtsave;
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struct charsets charsets;
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struct charsets saved_charsets; /* For save/restore cursor + attributes */
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char *window_title;
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tll(char *) window_title_stack;
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struct {
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bool active;
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int fd;
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} flash;
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struct {
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bool active;
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enum { BLINK_ON, BLINK_OFF } state;
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int fd;
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} blink;
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struct vt vt;
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int scale;
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int width; /* pixels */
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int height; /* pixels */
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int unmaximized_width; /* last unmaximized size, pixels */
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int unmaximized_height; /* last unmaximized size, pixels */
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struct {
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int left;
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int right;
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int top;
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int bottom;
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} margins;
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int cols; /* number of columns */
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int rows; /* number of rows */
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int cell_width; /* pixels per cell, x-wise */
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int cell_height; /* pixels per cell, y-wise */
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struct scroll_region scroll_region;
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struct {
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uint32_t fg;
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uint32_t bg;
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uint32_t table[256];
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uint16_t alpha;
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uint32_t default_fg;
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uint32_t default_bg;
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uint32_t default_table[256];
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} colors;
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enum cursor_style default_cursor_style;
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enum cursor_style cursor_style;
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struct {
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bool active;
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enum { CURSOR_BLINK_ON, CURSOR_BLINK_OFF } state;
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int fd;
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} cursor_blink;
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bool default_cursor_blink;
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struct {
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uint32_t text;
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uint32_t cursor;
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} default_cursor_color;
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struct {
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uint32_t text;
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uint32_t cursor;
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} cursor_color;
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struct {
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enum selection_kind kind;
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enum selection_direction direction;
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struct coord start;
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struct coord end;
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bool ongoing;
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struct {
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int fd;
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int col;
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enum selection_scroll_direction direction;
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} auto_scroll;
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} selection;
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bool is_searching;
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struct {
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wchar_t *buf;
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size_t len;
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size_t sz;
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size_t cursor;
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enum { SEARCH_BACKWARD, SEARCH_FORWARD} direction;
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int original_view;
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bool view_followed_offset;
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struct coord match;
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size_t match_len;
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} search;
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tll(int) tab_stops;
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struct wayland *wl;
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struct wl_window *window;
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bool visual_focus;
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bool kbd_focus;
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enum term_surface active_surface;
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struct {
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/* Scheduled for rendering, as soon-as-possible */
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struct {
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bool grid;
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bool csd;
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bool search;
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bool title;
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} refresh;
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/* Scheduled for rendering, in the next frame callback */
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struct {
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bool grid;
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bool csd;
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bool search;
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bool title;
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} pending;
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bool margins; /* Someone explicitly requested a refresh of the margins */
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bool urgency; /* Signal 'urgency' (paint borders red) */
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int scrollback_lines; /* Number of scrollback lines, from conf (TODO: move out from render struct?) */
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struct {
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bool enabled;
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int timer_fd;
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bool flipped;
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} app_sync_updates;
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/* Render threads + synchronization primitives */
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struct {
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size_t count;
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sem_t start;
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sem_t done;
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mtx_t lock;
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tll(int) queue;
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thrd_t *threads;
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struct buffer *buf;
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} workers;
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/* Last rendered cursor position */
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struct {
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struct row *row;
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int col;
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bool hidden;
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} last_cursor;
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struct buffer *last_buf; /* Buffer we rendered to last time */
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bool was_flashing; /* Flash was active last time we rendered */
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bool was_searching;
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size_t search_glyph_offset;
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bool presentation_timings;
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struct timespec input_time;
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} render;
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/* Temporary: for FDM */
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struct {
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bool is_armed;
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int lower_fd;
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int upper_fd;
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} delayed_render_timer;
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struct {
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enum {
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SIXEL_DECSIXEL, /* DECSIXEL body part ", $, -, ? ... ~ */
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SIXEL_DECGRA, /* DECGRA Set Raster Attributes " Pan; Pad; Ph; Pv */
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SIXEL_DECGRI, /* DECGRI Graphics Repeat Introducer ! Pn Ch */
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SIXEL_DECGCI, /* DECGCI Graphics Color Introducer # Pc; Pu; Px; Py; Pz */
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} state;
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struct coord pos; /* Current sixel coordinate */
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int color_idx; /* Current palette index */
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int max_col; /* Largest column index we've seen (aka the image width) */
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uint32_t *palette; /* Color palette */
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struct {
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uint32_t *data; /* Raw image data, in ARGB */
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int width; /* Image width, in pixels */
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int height; /* Image height, in pixels */
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bool autosize;
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} image;
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unsigned params[5]; /* Collected parameters, for RASTER, COLOR_SPEC */
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unsigned param; /* Currently collecting parameter, for RASTER, COLOR_SPEC and REPEAT */
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unsigned param_idx; /* Parameters seen */
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/* Application configurable */
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unsigned palette_size; /* Number of colors in palette */
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unsigned max_width; /* Maximum image width, in pixels */
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unsigned max_height; /* Maximum image height, in pixels */
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} sixel;
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bool hold_at_exit;
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bool is_shutting_down;
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void (*shutdown_cb)(void *data, int exit_code);
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void *shutdown_data;
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char *foot_exe;
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char *cwd;
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};
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extern const char *const XCURSOR_HIDDEN;
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extern const char *const XCURSOR_LEFT_PTR;
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extern const char *const XCURSOR_TEXT;
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//extern const char *const XCURSOR_HAND2;
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extern const char *const XCURSOR_TOP_LEFT_CORNER;
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extern const char *const XCURSOR_TOP_RIGHT_CORNER;
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extern const char *const XCURSOR_BOTTOM_LEFT_CORNER;
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extern const char *const XCURSOR_BOTTOM_RIGHT_CORNER;
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extern const char *const XCURSOR_LEFT_SIDE;
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extern const char *const XCURSOR_RIGHT_SIDE;
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extern const char *const XCURSOR_TOP_SIDE;
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extern const char *const XCURSOR_BOTTOM_SIDE;
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struct config;
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struct terminal *term_init(
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const struct config *conf, struct fdm *fdm, struct reaper *reaper,
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struct wayland *wayl, const char *foot_exe, const char *cwd,
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int argc, char *const *argv,
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void (*shutdown_cb)(void *data, int exit_code), void *shutdown_data);
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bool term_shutdown(struct terminal *term);
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int term_destroy(struct terminal *term);
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void term_reset(struct terminal *term, bool hard);
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bool term_to_slave(struct terminal *term, const void *data, size_t len);
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bool term_paste_data_to_slave(
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struct terminal *term, const void *data, size_t len);
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bool term_font_size_increase(struct terminal *term);
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bool term_font_size_decrease(struct terminal *term);
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bool term_font_size_reset(struct terminal *term);
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bool term_font_dpi_changed(struct terminal *term);
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void term_font_subpixel_changed(struct terminal *term);
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void term_window_configured(struct terminal *term);
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void term_damage_rows(struct terminal *term, int start, int end);
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void term_damage_rows_in_view(struct terminal *term, int start, int end);
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void term_damage_all(struct terminal *term);
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void term_damage_view(struct terminal *term);
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void term_damage_cursor(struct terminal *term);
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void term_damage_margins(struct terminal *term);
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void term_reset_view(struct terminal *term);
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void term_damage_scroll(
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struct terminal *term, enum damage_type damage_type,
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struct scroll_region region, int lines);
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void term_erase(
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struct terminal *term, const struct coord *start, const struct coord *end);
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int term_row_rel_to_abs(const struct terminal *term, int row);
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void term_cursor_home(struct terminal *term);
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void term_cursor_to(struct terminal *term, int row, int col);
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void term_cursor_left(struct terminal *term, int count);
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void term_cursor_right(struct terminal *term, int count);
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void term_cursor_up(struct terminal *term, int count);
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void term_cursor_down(struct terminal *term, int count);
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void term_cursor_blink_enable(struct terminal *term);
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void term_cursor_blink_disable(struct terminal *term);
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void term_cursor_blink_restart(struct terminal *term);
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void term_print(struct terminal *term, wchar_t wc, int width);
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void term_scroll(struct terminal *term, int rows);
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void term_scroll_reverse(struct terminal *term, int rows);
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void term_scroll_partial(
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struct terminal *term, struct scroll_region region, int rows);
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void term_scroll_reverse_partial(
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struct terminal *term, struct scroll_region region, int rows);
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void term_carriage_return(struct terminal *term);
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void term_linefeed(struct terminal *term);
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void term_reverse_index(struct terminal *term);
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void term_arm_blink_timer(struct terminal *term);
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void term_restore_cursor(struct terminal *term, const struct cursor *cursor);
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void term_visual_focus_in(struct terminal *term);
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void term_visual_focus_out(struct terminal *term);
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void term_kbd_focus_in(struct terminal *term);
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void term_kbd_focus_out(struct terminal *term);
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void term_mouse_down(
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struct terminal *term, int button, int row, int col,
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bool shift, bool alt, bool ctrl);
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void term_mouse_up(
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struct terminal *term, int button, int row, int col,
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bool shift, bool alt, bool ctrl);
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void term_mouse_motion(
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struct terminal *term, int button, int row, int col,
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bool shift, bool alt, bool ctrl);
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bool term_mouse_grabbed(const struct terminal *term, struct seat *seat);
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void term_xcursor_update(struct terminal *term);
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void term_xcursor_update_for_seat(struct terminal *term, struct seat *seat);
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void term_set_window_title(struct terminal *term, const char *title);
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void term_flash(struct terminal *term, unsigned duration_ms);
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void term_bell(struct terminal *term);
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bool term_spawn_new(const struct terminal *term);
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void term_enable_app_sync_updates(struct terminal *term);
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void term_disable_app_sync_updates(struct terminal *term);
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enum term_surface term_surface_kind(
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const struct terminal *term, const struct wl_surface *surface);
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bool term_scrollback_to_text(
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const struct terminal *term, char **text, size_t *len);
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bool term_view_to_text(
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const struct terminal *term, char **text, size_t *len);
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