Arthur Barraux
61 lines
1.6 KiB
C
61 lines
1.6 KiB
C
#include "../include/output.h"
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void editorDrawRows(struct editorConfig *E, struct abuf *ab) {
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int y;
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char welcome[80];
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int welcome_len;
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int padding;
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int len;
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int file_row;
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for (y = 0; y < E->screenrows; ++y) {
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file_row = y + E->row_offset;
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if (file_row >= E->numrows) {
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if (E->numrows == 0 && y == E->screenrows / 3) {
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welcome_len =
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snprintf(welcome, sizeof(welcome),
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"Beluga text editor -- version %s", BELUGA_VERSION);
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if (welcome_len > E->screencols) {
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welcome_len = E->screencols;
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}
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padding = (E->screencols - welcome_len) / 2;
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if (padding) {
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abAppend(ab, "~", 1);
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--padding;
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}
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while (padding--) {
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abAppend(ab, " ", 1);
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}
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abAppend(ab, welcome, welcome_len);
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} else {
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abAppend(ab, "~", 1);
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}
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} else {
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len = E->row[file_row].size > E->screencols ? E->screencols
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: E->row[y].size;
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abAppend(ab, E->row[file_row].chars, len);
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}
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abAppend(ab, ERASE_END_LINE, 3);
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if (y < E->screenrows - 1) {
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abAppend(ab, "\r\n", 2);
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}
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}
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}
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void editorRefreshScreen(struct editorConfig *E) {
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struct abuf ab = ABUF_INIT;
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char buf[32];
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abAppend(&ab, HIDE_CURSOR, 6);
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abAppend(&ab, CURSOR_TOP_LEFT, 3);
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editorDrawRows(E, &ab);
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snprintf(buf, sizeof(buf), "\x1b[%d;%dH", E->cursor_y + 1, E->cursor_x + 1);
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abAppend(&ab, buf, strlen(buf));
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abAppend(&ab, SHOW_CURSOR, 6);
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write(STDOUT_FILENO, ab.b, ab.len);
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abFree(&ab);
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}
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