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GL backend: elide Text also when word-wrapping

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In this case, the last line will have elipsis on the last line
when no more line can be printed

Note that the behavior is different with the Qt backend
This commit is contained in:
Olivier Goffart 2021-06-30 10:45:37 +02:00 • committed by Olivier Goffart
parent 8a2b665498
commit bc8bc616ed
1 changed files with 16 additions and 11 deletions
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27
sixtyfps_runtime/rendering_backends/gl/lib.rs
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@ -597,6 +597,7 @@ impl ItemRenderer for GLItemRenderer {
.clone();
let wrap = text.wrap() == TextWrap::word_wrap;
let elide = text.overflow() == TextOverflow::elide;
let letter_spacing = text.letter_spacing() * self.scale_factor;
let text_size =
font.text_size(letter_spacing, string, if wrap { Some(max_width) } else { None });
@ -631,9 +632,9 @@ impl ItemRenderer for GLItemRenderer {
*y += font_metrics.height();
};
if wrap {
let mut start = 0;
while start < string.len() && y + font_metrics.height() <= max_height {
let mut start = 0;
'lines: while start < string.len() && y + font_metrics.height() <= max_height {
if wrap && (!elide || y + 2. * font_metrics.height() <= max_height) {
let index = canvas.break_text(max_width, &string[start..], paint).unwrap();
if index == 0 {
// FIXME the word is too big to be shown, but we should still break, ideally
@ -643,15 +644,14 @@ impl ItemRenderer for GLItemRenderer {
// trim is there to remove the \n
draw_line(&mut canvas, string[start..index].trim(), &mut y);
start = index;
}
} else {
let elide = text.overflow() == TextOverflow::elide;
'lines: for line in string.lines() {
if y + font_metrics.height() > max_height {
break;
}
} else {
let index = string[start..].find('\n').map_or(string.len(), |i| start + i + 1);
let line = &string[start..index].trim();
start = index;
let text_metrics = canvas.measure_text(0., 0., line, paint).unwrap();
if text_metrics.width() > max_width {
let elide_last_line =
elide && index < string.len() && y + 2. * font_metrics.height() > max_height;
if text_metrics.width() > max_width || elide_last_line {
let w = max_width
- if elide {
canvas.measure_text(0., 0., "…", paint).unwrap().width()
@ -672,6 +672,11 @@ impl ItemRenderer for GLItemRenderer {
continue 'lines;
}
}
if elide_last_line {
let elided = format!("{}…", line);
draw_line(&mut canvas, &elided, &mut y);
continue 'lines;
}
}
draw_line(&mut canvas, line, &mut y);
}