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bdb79e8b9f
This patch adds support for the OSC-133;A sequence, introduced by FinalTerm and implemented by iTerm2, Kitty and more. See https://iterm2.com/documentation-one-page.html#documentation-escape-codes.html. The shell emits the OSC just before printing the prompt. This lets the terminal know where, in the scrollback, there are prompts. We implement this using a simple boolean in the row struct ("this row has a prompt"). The prompt marker must be reflowed along with the text on window resizes. In an ideal world, erasing, or overwriting the cell where the OSC was emitted, would remove the prompt mark. Since we don't store this information in the cell struct, we can't do that. The best we can do is reset it in erase_line(). This works well enough in the "normal" screen, when used with a "normal" shell. It doesn't really work in fullscreen apps, on the alt screen. But that doesn't matter since we don't support jumping between prompts on the alt screen anyway. To be able to jump between prompts, two new key bindings have been added: prompt-prev and prompt-next, bound to ctrl+shift+z and ctrl+shift+x respectively. prompt-prev will jump to the previous, not currently visible, prompt, by moving the viewport, ensuring the prompt is at the top of the screen. prompt-next jumps to the next prompt, visible or not. Again, by moving the viewport to ensure the prompt is at the top of the screen. If we're at the bottom of the scrollback, the viewport is instead moved as far down as possible. Closes #30
112 lines
3 KiB
C
112 lines
3 KiB
C
#pragma once
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#include <stddef.h>
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#include "debug.h"
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#include "terminal.h"
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struct grid *grid_snapshot(const struct grid *grid);
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void grid_free(struct grid *grid);
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void grid_swap_row(struct grid *grid, int row_a, int row_b);
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struct row *grid_row_alloc(int cols, bool initialize);
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void grid_row_free(struct row *row);
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void grid_resize_without_reflow(
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struct grid *grid, int new_rows, int new_cols,
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int old_screen_rows, int new_screen_rows);
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void grid_resize_and_reflow(
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struct grid *grid, int new_rows, int new_cols,
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int old_screen_rows, int new_screen_rows,
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size_t tracking_points_count,
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struct coord *const _tracking_points[static tracking_points_count]);
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/* Convert row numbers between scrollback-relative and absolute coordinates */
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int grid_row_abs_to_sb(const struct grid *grid, int screen_rows, int abs_row);
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int grid_row_sb_to_abs(const struct grid *grid, int screen_rows, int sb_rel_row);
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int grid_sb_start_ignore_uninitialized(const struct grid *grid, int screen_rows);
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int grid_row_abs_to_sb_precalc_sb_start(
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const struct grid *grid, int sb_start, int abs_row);
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int grid_row_sb_to_abs_precalc_sb_start(
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const struct grid *grid, int sb_start, int sb_rel_row);
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static inline int
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grid_row_absolute(const struct grid *grid, int row_no)
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{
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return (grid->offset + row_no) & (grid->num_rows - 1);
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}
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static inline int
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grid_row_absolute_in_view(const struct grid *grid, int row_no)
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{
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return (grid->view + row_no) & (grid->num_rows - 1);
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}
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static inline struct row *
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_grid_row_maybe_alloc(struct grid *grid, int row_no, bool alloc_if_null)
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{
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xassert(grid->offset >= 0);
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int real_row = grid_row_absolute(grid, row_no);
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struct row *row = grid->rows[real_row];
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if (row == NULL && alloc_if_null) {
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row = grid_row_alloc(grid->num_cols, false);
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grid->rows[real_row] = row;
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}
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xassert(row != NULL);
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return row;
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}
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static inline struct row *
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grid_row(struct grid *grid, int row_no)
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{
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return _grid_row_maybe_alloc(grid, row_no, false);
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}
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static inline struct row *
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grid_row_and_alloc(struct grid *grid, int row_no)
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{
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return _grid_row_maybe_alloc(grid, row_no, true);
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}
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static inline struct row *
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grid_row_in_view(struct grid *grid, int row_no)
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{
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xassert(grid->view >= 0);
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int real_row = grid_row_absolute_in_view(grid, row_no);
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struct row *row = grid->rows[real_row];
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xassert(row != NULL);
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return row;
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}
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void grid_row_uri_range_put(
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struct row *row, int col, const char *uri, uint64_t id);
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void grid_row_uri_range_add(struct row *row, struct row_uri_range range);
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void grid_row_uri_range_erase(struct row *row, int start, int end);
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static inline void
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grid_row_uri_range_destroy(struct row_uri_range *range)
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{
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free(range->uri);
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}
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static inline void
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grid_row_reset_extra(struct row *row)
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{
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struct row_data *extra = row->extra;
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if (likely(extra == NULL))
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return;
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for (size_t i = 0; i < extra->uri_ranges.count; i++)
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grid_row_uri_range_destroy(&extra->uri_ranges.v[i]);
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free(extra->uri_ranges.v);
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free(extra);
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row->extra = NULL;
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}
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