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Fix horizontal scrolling of textareas when UTF-8 I/O is enabled

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As draw_textarea_utf8 loops over each character of the textarea content, it
checks whether the character is on the screen; draws it if so; increments
the screen co-ordinate; and updates the position in the textarea text.
The last step was being skipped when the character was not on the line,
so a line would be drawn from the beginning, even if the left edge of the
textarea is off the screen.

Closes: Bug 835 - Text in textarea is unaffected by horizontal scrolling of
document in UTF-8 mode
This commit is contained in:
Miciah Dashiel Butler Masters 2006-12-02 16:35:51 +00:00 committed by Miciah Dashiel Butler Masters
parent 5537a3f977
commit 711ee0a33f
1 changed files with 9 additions and 10 deletions
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19
src/viewer/text/textarea.c
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@ -363,24 +363,23 @@ draw_textarea_utf8(struct terminal *term, struct form_state *fs,
for (i = 0, x = xbase; i < fc->cols; i++, x++) {
unicode_val_T data;
if (!col_is_in_box(box, x))
continue;
if (i >= -fs->vpos && text < end) {
int cell;
/* utf8_to_unicode will increment text. */
data = utf8_to_unicode(&text, end);
cell = unicode_to_cell(data);
} else
data = '_';
if (col_is_in_box(box, x)) {
int cell = unicode_to_cell(data);
if (cell == 2) {
draw_char_data(term, x++, y, data);
i++;
data = UCS_NO_CHAR;
}
} else
data = '_';
draw_char_data(term, x, y, data);
draw_char_data(term, x, y, data);
}
}
}