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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.
81 lines
3 KiB
C
81 lines
3 KiB
C
#pragma once
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#include <stdbool.h>
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#include <wayland-client.h>
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#include "terminal.h"
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extern const struct wl_data_device_listener data_device_listener;
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extern const struct zwp_primary_selection_device_v1_listener primary_selection_device_listener;
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bool selection_enabled(const struct terminal *term, struct seat *seat);
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void selection_start(
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struct terminal *term, int col, int row, enum selection_kind kind);
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void selection_update(struct terminal *term, int col, int row);
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void selection_finalize(
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struct seat *seat, struct terminal *term, uint32_t serial);
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void selection_dirty_cells(struct terminal *term);
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void selection_cancel(struct terminal *term);
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void selection_extend( struct seat *seat, struct terminal *term,
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int col, int row, uint32_t serial);
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bool selection_on_rows(const struct terminal *term, int start, int end);
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void selection_view_up(struct terminal *term, int new_view);
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void selection_view_down(struct terminal *term, int new_view);
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void selection_mark_word(
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struct seat *seat, struct terminal *term, int col, int row,
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bool spaces_only, uint32_t serial);
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void selection_mark_row(
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struct seat *seat, struct terminal *term, int row, uint32_t serial);
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void selection_clipboard_unset(struct seat *seat);
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void selection_primary_unset(struct seat *seat);
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bool selection_clipboard_has_data(const struct seat *seat);
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bool selection_primary_has_data(const struct seat *seat);
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char *selection_to_text(const struct terminal *term);
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void selection_to_clipboard(
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struct seat *seat, struct terminal *term, uint32_t serial);
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void selection_from_clipboard(
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struct seat *seat, struct terminal *term, uint32_t serial);
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void selection_to_primary(
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struct seat *seat, struct terminal *term, uint32_t serial);
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void selection_from_primary(struct seat *seat, struct terminal *term);
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/* Copy text *to* primary/clipboard */
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bool text_to_clipboard(
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struct seat *seat, struct terminal *term, char *text, uint32_t serial);
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bool text_to_primary(
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struct seat *seat, struct terminal *term, char *text, uint32_t serial);
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/*
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* Copy text *from* primary/clipboard
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*
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* Note that these are asynchronous; they *will* return
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* immediately. The 'cb' callback will be called 0..n times with
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* clipboard data. When done (or on error), the 'done' callback is
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* called.
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*
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* As such, keep this in mind:
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* - The 'user' context must not be stack allocated
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* - Don't expect clipboard data to have been received when these
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* functions return (it will *never* have been received at this
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* point).
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*/
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void text_from_clipboard(
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struct seat *seat, struct terminal *term,
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void (*cb)(const char *data, size_t size, void *user),
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void (*done)(void *user), void *user);
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void text_from_primary(
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struct seat *seat, struct terminal *term,
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void (*cb)(const char *data, size_t size, void *user),
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void (*dont)(void *user), void *user);
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void selection_start_scroll_timer(
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struct terminal *term, int interval_ns,
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enum selection_scroll_direction direction, int col);
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void selection_stop_scroll_timer(struct terminal *term);
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