Struct cosmic_text::Color
source · pub struct Color(pub u32);Expand description
Text color
Tuple Fields§
§0: u32Implementations§
source§impl Color
impl Color
sourcepub const fn rgb(r: u8, g: u8, b: u8) -> Self
pub const fn rgb(r: u8, g: u8, b: u8) -> Self
Create new color with red, green, and blue components
sourcepub const fn rgba(r: u8, g: u8, b: u8, a: u8) -> Self
pub const fn rgba(r: u8, g: u8, b: u8, a: u8) -> Self
Create new color with red, green, blue, and alpha components
Examples found in repository?
More examples
src/swash.rs (lines 159-164)
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pub fn with_pixels<F: FnMut(i32, i32, Color)>(
&mut self,
cache_key: CacheKey,
base: Color,
mut f: F
) {
if let Some(image) = self.get_image(cache_key) {
let x = image.placement.left;
let y = -image.placement.top;
match image.content {
Content::Mask => {
let mut i = 0;
for off_y in 0..image.placement.height as i32 {
for off_x in 0..image.placement.width as i32 {
//TODO: blend base alpha?
f(
x + off_x,
y + off_y,
Color(
((image.data[i] as u32) << 24) |
base.0 & 0xFF_FF_FF
)
);
i += 1;
}
}
}
Content::Color => {
let mut i = 0;
for off_y in 0..image.placement.height as i32 {
for off_x in 0..image.placement.width as i32 {
//TODO: blend base alpha?
f(
x + off_x,
y + off_y,
Color::rgba(
image.data[i],
image.data[i + 1],
image.data[i + 2],
image.data[i + 3]
)
);
i += 4;
}
}
}
Content::SubpixelMask => {
log::warn!("TODO: SubpixelMask");
}
}
}
}src/edit/editor.rs (line 596)
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fn draw<F>(&self, cache: &mut crate::SwashCache, color: Color, mut f: F)
where F: FnMut(i32, i32, u32, u32, Color)
{
let font_size = self.buffer.metrics().font_size;
let line_height = self.buffer.metrics().line_height;
for run in self.buffer.layout_runs() {
let line_i = run.line_i;
let line_y = run.line_y;
let cursor_glyph_opt = |cursor: &Cursor| -> Option<(usize, f32)> {
if cursor.line == line_i {
for (glyph_i, glyph) in run.glyphs.iter().enumerate() {
if cursor.index == glyph.start {
return Some((glyph_i, 0.0));
} else if cursor.index > glyph.start && cursor.index < glyph.end {
// Guess x offset based on characters
let mut before = 0;
let mut total = 0;
let cluster = &run.text[glyph.start..glyph.end];
for (i, _) in cluster.grapheme_indices(true) {
if glyph.start + i < cursor.index {
before += 1;
}
total += 1;
}
let offset = glyph.w * (before as f32) / (total as f32);
return Some((glyph_i, offset));
}
}
match run.glyphs.last() {
Some(glyph) => {
if cursor.index == glyph.end {
return Some((run.glyphs.len(), 0.0));
}
},
None => {
return Some((0, 0.0));
}
}
}
None
};
// Highlight selection (TODO: HIGHLIGHT COLOR!)
if let Some(select) = self.select_opt {
let (start, end) = match select.line.cmp(&self.cursor.line) {
cmp::Ordering::Greater => (self.cursor, select),
cmp::Ordering::Less => (select, self.cursor),
cmp::Ordering::Equal => {
/* select.line == self.cursor.line */
if select.index < self.cursor.index {
(select, self.cursor)
} else {
/* select.index >= self.cursor.index */
(self.cursor, select)
}
}
};
if line_i >= start.line && line_i <= end.line {
let mut range_opt = None;
for glyph in run.glyphs.iter() {
// Guess x offset based on characters
let cluster = &run.text[glyph.start..glyph.end];
let total = cluster.grapheme_indices(true).count();
let mut c_x = glyph.x;
let c_w = glyph.w / total as f32;
for (i, c) in cluster.grapheme_indices(true) {
let c_start = glyph.start + i;
let c_end = glyph.start + i + c.len();
if (start.line != line_i || c_end > start.index)
&& (end.line != line_i || c_start < end.index) {
range_opt = match range_opt.take() {
Some((min, max)) => Some((
cmp::min(min, c_x as i32),
cmp::max(max, (c_x + c_w) as i32),
)),
None => Some((
c_x as i32,
(c_x + c_w) as i32,
))
};
} else if let Some((min, max)) = range_opt.take() {
f(
min,
line_y - font_size,
cmp::max(0, max - min) as u32,
line_height as u32,
Color::rgba(color.r(), color.g(), color.b(), 0x33)
);
}
c_x += c_w;
}
}
if run.glyphs.is_empty() && end.line > line_i{
// Highlight all of internal empty lines
range_opt = Some((0, self.buffer.size().0));
}
if let Some((mut min, mut max)) = range_opt.take() {
if end.line > line_i {
// Draw to end of line
if run.rtl {
min = 0;
} else {
max = self.buffer.size().0;
}
}
f(
min,
line_y - font_size,
cmp::max(0, max - min) as u32,
line_height as u32,
Color::rgba(color.r(), color.g(), color.b(), 0x33)
);
}
}
}
// Draw cursor
if let Some((cursor_glyph, cursor_glyph_offset)) = cursor_glyph_opt(&self.cursor) {
let x = match run.glyphs.get(cursor_glyph) {
Some(glyph) => {
// Start of detected glyph
if glyph.level.is_rtl() {
(glyph.x + glyph.w - cursor_glyph_offset) as i32
} else {
(glyph.x + cursor_glyph_offset) as i32
}
},
None => match run.glyphs.last() {
Some(glyph) => {
// End of last glyph
if glyph.level.is_rtl() {
glyph.x as i32
} else {
(glyph.x + glyph.w) as i32
}
},
None => {
// Start of empty line
0
}
}
};
f(
x,
line_y - font_size,
1,
line_height as u32,
color,
);
}
for glyph in run.glyphs.iter() {
let (cache_key, x_int, y_int) = (glyph.cache_key, glyph.x_int, glyph.y_int);
let glyph_color = match glyph.color_opt {
Some(some) => some,
None => color,
};
cache.with_pixels(cache_key, glyph_color, |x, y, color| {
f(x_int + x, line_y + y_int + y, 1, 1, color);
});
}
}
}sourcepub fn r(&self) -> u8
pub fn r(&self) -> u8
Get the red component
Examples found in repository?
src/edit/editor.rs (line 596)
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fn draw<F>(&self, cache: &mut crate::SwashCache, color: Color, mut f: F)
where F: FnMut(i32, i32, u32, u32, Color)
{
let font_size = self.buffer.metrics().font_size;
let line_height = self.buffer.metrics().line_height;
for run in self.buffer.layout_runs() {
let line_i = run.line_i;
let line_y = run.line_y;
let cursor_glyph_opt = |cursor: &Cursor| -> Option<(usize, f32)> {
if cursor.line == line_i {
for (glyph_i, glyph) in run.glyphs.iter().enumerate() {
if cursor.index == glyph.start {
return Some((glyph_i, 0.0));
} else if cursor.index > glyph.start && cursor.index < glyph.end {
// Guess x offset based on characters
let mut before = 0;
let mut total = 0;
let cluster = &run.text[glyph.start..glyph.end];
for (i, _) in cluster.grapheme_indices(true) {
if glyph.start + i < cursor.index {
before += 1;
}
total += 1;
}
let offset = glyph.w * (before as f32) / (total as f32);
return Some((glyph_i, offset));
}
}
match run.glyphs.last() {
Some(glyph) => {
if cursor.index == glyph.end {
return Some((run.glyphs.len(), 0.0));
}
},
None => {
return Some((0, 0.0));
}
}
}
None
};
// Highlight selection (TODO: HIGHLIGHT COLOR!)
if let Some(select) = self.select_opt {
let (start, end) = match select.line.cmp(&self.cursor.line) {
cmp::Ordering::Greater => (self.cursor, select),
cmp::Ordering::Less => (select, self.cursor),
cmp::Ordering::Equal => {
/* select.line == self.cursor.line */
if select.index < self.cursor.index {
(select, self.cursor)
} else {
/* select.index >= self.cursor.index */
(self.cursor, select)
}
}
};
if line_i >= start.line && line_i <= end.line {
let mut range_opt = None;
for glyph in run.glyphs.iter() {
// Guess x offset based on characters
let cluster = &run.text[glyph.start..glyph.end];
let total = cluster.grapheme_indices(true).count();
let mut c_x = glyph.x;
let c_w = glyph.w / total as f32;
for (i, c) in cluster.grapheme_indices(true) {
let c_start = glyph.start + i;
let c_end = glyph.start + i + c.len();
if (start.line != line_i || c_end > start.index)
&& (end.line != line_i || c_start < end.index) {
range_opt = match range_opt.take() {
Some((min, max)) => Some((
cmp::min(min, c_x as i32),
cmp::max(max, (c_x + c_w) as i32),
)),
None => Some((
c_x as i32,
(c_x + c_w) as i32,
))
};
} else if let Some((min, max)) = range_opt.take() {
f(
min,
line_y - font_size,
cmp::max(0, max - min) as u32,
line_height as u32,
Color::rgba(color.r(), color.g(), color.b(), 0x33)
);
}
c_x += c_w;
}
}
if run.glyphs.is_empty() && end.line > line_i{
// Highlight all of internal empty lines
range_opt = Some((0, self.buffer.size().0));
}
if let Some((mut min, mut max)) = range_opt.take() {
if end.line > line_i {
// Draw to end of line
if run.rtl {
min = 0;
} else {
max = self.buffer.size().0;
}
}
f(
min,
line_y - font_size,
cmp::max(0, max - min) as u32,
line_height as u32,
Color::rgba(color.r(), color.g(), color.b(), 0x33)
);
}
}
}
// Draw cursor
if let Some((cursor_glyph, cursor_glyph_offset)) = cursor_glyph_opt(&self.cursor) {
let x = match run.glyphs.get(cursor_glyph) {
Some(glyph) => {
// Start of detected glyph
if glyph.level.is_rtl() {
(glyph.x + glyph.w - cursor_glyph_offset) as i32
} else {
(glyph.x + cursor_glyph_offset) as i32
}
},
None => match run.glyphs.last() {
Some(glyph) => {
// End of last glyph
if glyph.level.is_rtl() {
glyph.x as i32
} else {
(glyph.x + glyph.w) as i32
}
},
None => {
// Start of empty line
0
}
}
};
f(
x,
line_y - font_size,
1,
line_height as u32,
color,
);
}
for glyph in run.glyphs.iter() {
let (cache_key, x_int, y_int) = (glyph.cache_key, glyph.x_int, glyph.y_int);
let glyph_color = match glyph.color_opt {
Some(some) => some,
None => color,
};
cache.with_pixels(cache_key, glyph_color, |x, y, color| {
f(x_int + x, line_y + y_int + y, 1, 1, color);
});
}
}
}sourcepub fn g(&self) -> u8
pub fn g(&self) -> u8
Get the green component
Examples found in repository?
src/edit/editor.rs (line 596)
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fn draw<F>(&self, cache: &mut crate::SwashCache, color: Color, mut f: F)
where F: FnMut(i32, i32, u32, u32, Color)
{
let font_size = self.buffer.metrics().font_size;
let line_height = self.buffer.metrics().line_height;
for run in self.buffer.layout_runs() {
let line_i = run.line_i;
let line_y = run.line_y;
let cursor_glyph_opt = |cursor: &Cursor| -> Option<(usize, f32)> {
if cursor.line == line_i {
for (glyph_i, glyph) in run.glyphs.iter().enumerate() {
if cursor.index == glyph.start {
return Some((glyph_i, 0.0));
} else if cursor.index > glyph.start && cursor.index < glyph.end {
// Guess x offset based on characters
let mut before = 0;
let mut total = 0;
let cluster = &run.text[glyph.start..glyph.end];
for (i, _) in cluster.grapheme_indices(true) {
if glyph.start + i < cursor.index {
before += 1;
}
total += 1;
}
let offset = glyph.w * (before as f32) / (total as f32);
return Some((glyph_i, offset));
}
}
match run.glyphs.last() {
Some(glyph) => {
if cursor.index == glyph.end {
return Some((run.glyphs.len(), 0.0));
}
},
None => {
return Some((0, 0.0));
}
}
}
None
};
// Highlight selection (TODO: HIGHLIGHT COLOR!)
if let Some(select) = self.select_opt {
let (start, end) = match select.line.cmp(&self.cursor.line) {
cmp::Ordering::Greater => (self.cursor, select),
cmp::Ordering::Less => (select, self.cursor),
cmp::Ordering::Equal => {
/* select.line == self.cursor.line */
if select.index < self.cursor.index {
(select, self.cursor)
} else {
/* select.index >= self.cursor.index */
(self.cursor, select)
}
}
};
if line_i >= start.line && line_i <= end.line {
let mut range_opt = None;
for glyph in run.glyphs.iter() {
// Guess x offset based on characters
let cluster = &run.text[glyph.start..glyph.end];
let total = cluster.grapheme_indices(true).count();
let mut c_x = glyph.x;
let c_w = glyph.w / total as f32;
for (i, c) in cluster.grapheme_indices(true) {
let c_start = glyph.start + i;
let c_end = glyph.start + i + c.len();
if (start.line != line_i || c_end > start.index)
&& (end.line != line_i || c_start < end.index) {
range_opt = match range_opt.take() {
Some((min, max)) => Some((
cmp::min(min, c_x as i32),
cmp::max(max, (c_x + c_w) as i32),
)),
None => Some((
c_x as i32,
(c_x + c_w) as i32,
))
};
} else if let Some((min, max)) = range_opt.take() {
f(
min,
line_y - font_size,
cmp::max(0, max - min) as u32,
line_height as u32,
Color::rgba(color.r(), color.g(), color.b(), 0x33)
);
}
c_x += c_w;
}
}
if run.glyphs.is_empty() && end.line > line_i{
// Highlight all of internal empty lines
range_opt = Some((0, self.buffer.size().0));
}
if let Some((mut min, mut max)) = range_opt.take() {
if end.line > line_i {
// Draw to end of line
if run.rtl {
min = 0;
} else {
max = self.buffer.size().0;
}
}
f(
min,
line_y - font_size,
cmp::max(0, max - min) as u32,
line_height as u32,
Color::rgba(color.r(), color.g(), color.b(), 0x33)
);
}
}
}
// Draw cursor
if let Some((cursor_glyph, cursor_glyph_offset)) = cursor_glyph_opt(&self.cursor) {
let x = match run.glyphs.get(cursor_glyph) {
Some(glyph) => {
// Start of detected glyph
if glyph.level.is_rtl() {
(glyph.x + glyph.w - cursor_glyph_offset) as i32
} else {
(glyph.x + cursor_glyph_offset) as i32
}
},
None => match run.glyphs.last() {
Some(glyph) => {
// End of last glyph
if glyph.level.is_rtl() {
glyph.x as i32
} else {
(glyph.x + glyph.w) as i32
}
},
None => {
// Start of empty line
0
}
}
};
f(
x,
line_y - font_size,
1,
line_height as u32,
color,
);
}
for glyph in run.glyphs.iter() {
let (cache_key, x_int, y_int) = (glyph.cache_key, glyph.x_int, glyph.y_int);
let glyph_color = match glyph.color_opt {
Some(some) => some,
None => color,
};
cache.with_pixels(cache_key, glyph_color, |x, y, color| {
f(x_int + x, line_y + y_int + y, 1, 1, color);
});
}
}
}sourcepub fn b(&self) -> u8
pub fn b(&self) -> u8
Get the blue component
Examples found in repository?
src/edit/editor.rs (line 596)
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fn draw<F>(&self, cache: &mut crate::SwashCache, color: Color, mut f: F)
where F: FnMut(i32, i32, u32, u32, Color)
{
let font_size = self.buffer.metrics().font_size;
let line_height = self.buffer.metrics().line_height;
for run in self.buffer.layout_runs() {
let line_i = run.line_i;
let line_y = run.line_y;
let cursor_glyph_opt = |cursor: &Cursor| -> Option<(usize, f32)> {
if cursor.line == line_i {
for (glyph_i, glyph) in run.glyphs.iter().enumerate() {
if cursor.index == glyph.start {
return Some((glyph_i, 0.0));
} else if cursor.index > glyph.start && cursor.index < glyph.end {
// Guess x offset based on characters
let mut before = 0;
let mut total = 0;
let cluster = &run.text[glyph.start..glyph.end];
for (i, _) in cluster.grapheme_indices(true) {
if glyph.start + i < cursor.index {
before += 1;
}
total += 1;
}
let offset = glyph.w * (before as f32) / (total as f32);
return Some((glyph_i, offset));
}
}
match run.glyphs.last() {
Some(glyph) => {
if cursor.index == glyph.end {
return Some((run.glyphs.len(), 0.0));
}
},
None => {
return Some((0, 0.0));
}
}
}
None
};
// Highlight selection (TODO: HIGHLIGHT COLOR!)
if let Some(select) = self.select_opt {
let (start, end) = match select.line.cmp(&self.cursor.line) {
cmp::Ordering::Greater => (self.cursor, select),
cmp::Ordering::Less => (select, self.cursor),
cmp::Ordering::Equal => {
/* select.line == self.cursor.line */
if select.index < self.cursor.index {
(select, self.cursor)
} else {
/* select.index >= self.cursor.index */
(self.cursor, select)
}
}
};
if line_i >= start.line && line_i <= end.line {
let mut range_opt = None;
for glyph in run.glyphs.iter() {
// Guess x offset based on characters
let cluster = &run.text[glyph.start..glyph.end];
let total = cluster.grapheme_indices(true).count();
let mut c_x = glyph.x;
let c_w = glyph.w / total as f32;
for (i, c) in cluster.grapheme_indices(true) {
let c_start = glyph.start + i;
let c_end = glyph.start + i + c.len();
if (start.line != line_i || c_end > start.index)
&& (end.line != line_i || c_start < end.index) {
range_opt = match range_opt.take() {
Some((min, max)) => Some((
cmp::min(min, c_x as i32),
cmp::max(max, (c_x + c_w) as i32),
)),
None => Some((
c_x as i32,
(c_x + c_w) as i32,
))
};
} else if let Some((min, max)) = range_opt.take() {
f(
min,
line_y - font_size,
cmp::max(0, max - min) as u32,
line_height as u32,
Color::rgba(color.r(), color.g(), color.b(), 0x33)
);
}
c_x += c_w;
}
}
if run.glyphs.is_empty() && end.line > line_i{
// Highlight all of internal empty lines
range_opt = Some((0, self.buffer.size().0));
}
if let Some((mut min, mut max)) = range_opt.take() {
if end.line > line_i {
// Draw to end of line
if run.rtl {
min = 0;
} else {
max = self.buffer.size().0;
}
}
f(
min,
line_y - font_size,
cmp::max(0, max - min) as u32,
line_height as u32,
Color::rgba(color.r(), color.g(), color.b(), 0x33)
);
}
}
}
// Draw cursor
if let Some((cursor_glyph, cursor_glyph_offset)) = cursor_glyph_opt(&self.cursor) {
let x = match run.glyphs.get(cursor_glyph) {
Some(glyph) => {
// Start of detected glyph
if glyph.level.is_rtl() {
(glyph.x + glyph.w - cursor_glyph_offset) as i32
} else {
(glyph.x + cursor_glyph_offset) as i32
}
},
None => match run.glyphs.last() {
Some(glyph) => {
// End of last glyph
if glyph.level.is_rtl() {
glyph.x as i32
} else {
(glyph.x + glyph.w) as i32
}
},
None => {
// Start of empty line
0
}
}
};
f(
x,
line_y - font_size,
1,
line_height as u32,
color,
);
}
for glyph in run.glyphs.iter() {
let (cache_key, x_int, y_int) = (glyph.cache_key, glyph.x_int, glyph.y_int);
let glyph_color = match glyph.color_opt {
Some(some) => some,
None => color,
};
cache.with_pixels(cache_key, glyph_color, |x, y, color| {
f(x_int + x, line_y + y_int + y, 1, 1, color);
});
}
}
}