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https://github.com/ghostty-org/ghostty.git
synced 2026-04-06 07:38:21 +00:00
6e34bc686c
Previously ghostty_terminal_set required all values to be passed as pointers to the value, even when the value itself was already a pointer (userdata, function pointer callbacks). This forced callers into awkward patterns like compound literals or intermediate variables just to take the address of a pointer. Now pointer-typed options (userdata and all callbacks) are passed directly as the value parameter. Only non-pointer types like GhosttyString still require a pointer to the value. This simplifies InType to return the actual stored type for each option and lets setTyped work with those types directly.
98 lines
2.8 KiB
C
98 lines
2.8 KiB
C
#include <stdbool.h>
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#include <stddef.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <string.h>
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#include <ghostty/vt.h>
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//! [effects-write-pty]
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void on_write_pty(GhosttyTerminal terminal,
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void* userdata,
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const uint8_t* data,
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size_t len) {
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(void)terminal;
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(void)userdata;
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printf(" write_pty (%zu bytes): ", len);
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fwrite(data, 1, len, stdout);
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printf("\n");
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}
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//! [effects-write-pty]
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//! [effects-bell]
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void on_bell(GhosttyTerminal terminal, void* userdata) {
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(void)terminal;
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int* count = (int*)userdata;
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(*count)++;
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printf(" bell! (count=%d)\n", *count);
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}
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//! [effects-bell]
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//! [effects-title-changed]
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void on_title_changed(GhosttyTerminal terminal, void* userdata) {
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(void)userdata;
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// Query the cursor position to confirm the terminal processed the
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// title change (the title itself is tracked by the embedder via the
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// OSC parser or its own state).
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uint16_t col = 0;
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ghostty_terminal_get(terminal, GHOSTTY_TERMINAL_DATA_CURSOR_X, &col);
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printf(" title changed (cursor at col %u)\n", col);
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}
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//! [effects-title-changed]
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//! [effects-register]
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int main() {
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// Create a terminal
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GhosttyTerminal terminal = NULL;
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GhosttyTerminalOptions opts = {
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.cols = 80,
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.rows = 24,
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.max_scrollback = 0,
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};
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if (ghostty_terminal_new(NULL, &terminal, opts) != GHOSTTY_SUCCESS) {
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fprintf(stderr, "Failed to create terminal\n");
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return 1;
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}
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// Set up userdata — a simple bell counter
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int bell_count = 0;
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ghostty_terminal_set(terminal, GHOSTTY_TERMINAL_OPT_USERDATA, &bell_count);
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// Register effect callbacks
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ghostty_terminal_set(terminal, GHOSTTY_TERMINAL_OPT_WRITE_PTY,
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(const void *)on_write_pty);
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ghostty_terminal_set(terminal, GHOSTTY_TERMINAL_OPT_BELL,
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(const void *)on_bell);
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ghostty_terminal_set(terminal, GHOSTTY_TERMINAL_OPT_TITLE_CHANGED,
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(const void *)on_title_changed);
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// Feed VT data that triggers effects:
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// 1. Bell (BEL = 0x07)
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printf("Sending BEL:\n");
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const uint8_t bel = 0x07;
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ghostty_terminal_vt_write(terminal, &bel, 1);
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// 2. Title change (OSC 2 ; <title> ST)
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printf("Sending title change:\n");
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const char* title_seq = "\x1B]2;Hello Effects\x1B\\";
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ghostty_terminal_vt_write(terminal, (const uint8_t*)title_seq,
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strlen(title_seq));
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// 3. Device status report (DECRQM for wraparound mode ?7)
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// triggers write_pty with the response
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printf("Sending DECRQM query:\n");
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const char* decrqm = "\x1B[?7$p";
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ghostty_terminal_vt_write(terminal, (const uint8_t*)decrqm,
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strlen(decrqm));
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// 4. Another bell to show the counter increments
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printf("Sending another BEL:\n");
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ghostty_terminal_vt_write(terminal, &bel, 1);
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printf("Total bells: %d\n", bell_count);
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ghostty_terminal_free(terminal);
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return 0;
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}
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//! [effects-register]
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