1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246
// This file was generated by gir (https://github.com/gtk-rs/gir)
// from gir-files (https://github.com/gtk-rs/gir-files)
// DO NOT EDIT
use crate::{Analysis, Font, Rectangle};
use glib::{prelude::*, translate::*};
glib::wrapper! {
/// A [`GlyphString`][crate::GlyphString] is used to store strings of glyphs with geometry
/// and visual attribute information.
///
/// The storage for the glyph information is owned by the structure
/// which simplifies memory management.
#[derive(Debug, PartialEq, Eq, PartialOrd, Ord, Hash)]
pub struct GlyphString(Boxed<ffi::PangoGlyphString>);
match fn {
copy => |ptr| ffi::pango_glyph_string_copy(mut_override(ptr)),
free => |ptr| ffi::pango_glyph_string_free(ptr),
type_ => || ffi::pango_glyph_string_get_type(),
}
}
impl GlyphString {
/// Create a new [`GlyphString`][crate::GlyphString].
///
/// # Returns
///
/// the newly allocated [`GlyphString`][crate::GlyphString], which
/// should be freed with `Pango::GlyphString::free()`.
#[doc(alias = "pango_glyph_string_new")]
pub fn new() -> GlyphString {
unsafe { from_glib_full(ffi::pango_glyph_string_new()) }
}
/// Compute the logical and ink extents of a glyph string.
///
/// See the documentation for [`FontExt::glyph_extents()`][crate::prelude::FontExt::glyph_extents()] for details
/// about the interpretation of the rectangles.
///
/// Examples of logical (red) and ink (green) rects:
///
/// ![](rects1.png) ![](rects2.png)
/// ## `font`
/// a [`Font`][crate::Font]
///
/// # Returns
///
///
/// ## `ink_rect`
/// rectangle used to store the extents of the glyph string as drawn
///
/// ## `logical_rect`
/// rectangle used to store the logical extents of the glyph string
#[doc(alias = "pango_glyph_string_extents")]
pub fn extents(&mut self, font: &impl IsA<Font>) -> (Rectangle, Rectangle) {
unsafe {
let mut ink_rect = Rectangle::uninitialized();
let mut logical_rect = Rectangle::uninitialized();
ffi::pango_glyph_string_extents(
self.to_glib_none_mut().0,
font.as_ref().to_glib_none().0,
ink_rect.to_glib_none_mut().0,
logical_rect.to_glib_none_mut().0,
);
(ink_rect, logical_rect)
}
}
/// Computes the extents of a sub-portion of a glyph string.
///
/// The extents are relative to the start of the glyph string range
/// (the origin of their coordinate system is at the start of the range,
/// not at the start of the entire glyph string).
/// ## `start`
/// start index
/// ## `end`
/// end index (the range is the set of bytes with
/// indices such that start <= index < end)
/// ## `font`
/// a [`Font`][crate::Font]
///
/// # Returns
///
///
/// ## `ink_rect`
/// rectangle used to
/// store the extents of the glyph string range as drawn
///
/// ## `logical_rect`
/// rectangle used to
/// store the logical extents of the glyph string range
#[doc(alias = "pango_glyph_string_extents_range")]
pub fn extents_range(
&mut self,
start: i32,
end: i32,
font: &impl IsA<Font>,
) -> (Rectangle, Rectangle) {
unsafe {
let mut ink_rect = Rectangle::uninitialized();
let mut logical_rect = Rectangle::uninitialized();
ffi::pango_glyph_string_extents_range(
self.to_glib_none_mut().0,
start,
end,
font.as_ref().to_glib_none().0,
ink_rect.to_glib_none_mut().0,
logical_rect.to_glib_none_mut().0,
);
(ink_rect, logical_rect)
}
}
/// Computes the logical width of the glyph string.
///
/// This can also be computed using [`extents()`][Self::extents()].
/// However, since this only computes the width, it's much faster. This
/// is in fact only a convenience function that computes the sum of
/// @geometry.width for each glyph in the @self.
///
/// # Returns
///
/// the logical width of the glyph string.
#[doc(alias = "pango_glyph_string_get_width")]
#[doc(alias = "get_width")]
pub fn width(&self) -> i32 {
unsafe { ffi::pango_glyph_string_get_width(mut_override(self.to_glib_none().0)) }
}
/// Converts from character position to x position.
///
/// The X position is measured from the left edge of the run.
/// Character positions are obtained using font metrics for ligatures
/// where available, and computed by dividing up each cluster
/// into equal portions, otherwise.
///
/// <picture>
/// <source srcset="glyphstring-positions-dark.png" media="(prefers-color-scheme: dark)">
/// <img alt="Glyph positions" src="glyphstring-positions-light.png">
/// </picture>
/// ## `text`
/// the text for the run
/// ## `length`
/// the number of bytes (not characters) in @text.
/// ## `analysis`
/// the analysis information return from [`itemize()`][crate::itemize()]
/// ## `index_`
/// the byte index within @text
/// ## `trailing`
/// whether we should compute the result for the beginning ([`false`])
/// or end ([`true`]) of the character.
///
/// # Returns
///
///
/// ## `x_pos`
/// location to store result
#[doc(alias = "pango_glyph_string_index_to_x")]
pub fn index_to_x(&self, text: &str, analysis: &Analysis, index_: i32, trailing: bool) -> i32 {
let length = text.len() as _;
unsafe {
let mut x_pos = std::mem::MaybeUninit::uninit();
ffi::pango_glyph_string_index_to_x(
mut_override(self.to_glib_none().0),
text.to_glib_none().0,
length,
mut_override(analysis.to_glib_none().0),
index_,
trailing.into_glib(),
x_pos.as_mut_ptr(),
);
x_pos.assume_init()
}
}
//#[cfg(feature = "v1_50")]
//#[cfg_attr(docsrs, doc(cfg(feature = "v1_50")))]
//#[doc(alias = "pango_glyph_string_index_to_x_full")]
//pub fn index_to_x_full(&mut self, text: &str, analysis: &mut Analysis, attrs: /*Ignored*/Option<&mut LogAttr>, index_: i32, trailing: bool) -> i32 {
// unsafe { TODO: call ffi:pango_glyph_string_index_to_x_full() }
//}
/// Resize a glyph string to the given length.
/// ## `new_len`
/// the new length of the string
#[doc(alias = "pango_glyph_string_set_size")]
pub fn set_size(&mut self, new_len: i32) {
unsafe {
ffi::pango_glyph_string_set_size(self.to_glib_none_mut().0, new_len);
}
}
/// Convert from x offset to character position.
///
/// Character positions are computed by dividing up each cluster into
/// equal portions. In scripts where positioning within a cluster is
/// not allowed (such as Thai), the returned value may not be a valid
/// cursor position; the caller must combine the result with the logical
/// attributes for the text to compute the valid cursor position.
/// ## `text`
/// the text for the run
/// ## `length`
/// the number of bytes (not characters) in text.
/// ## `analysis`
/// the analysis information return from [`itemize()`][crate::itemize()]
/// ## `x_pos`
/// the x offset (in Pango units)
///
/// # Returns
///
///
/// ## `index_`
/// location to store calculated byte index within @text
///
/// ## `trailing`
/// location to store a boolean indicating whether the
/// user clicked on the leading or trailing edge of the character
#[doc(alias = "pango_glyph_string_x_to_index")]
pub fn x_to_index(&self, text: &str, analysis: &Analysis, x_pos: i32) -> (i32, i32) {
let length = text.len() as _;
unsafe {
let mut index_ = std::mem::MaybeUninit::uninit();
let mut trailing = std::mem::MaybeUninit::uninit();
ffi::pango_glyph_string_x_to_index(
mut_override(self.to_glib_none().0),
text.to_glib_none().0,
length,
mut_override(analysis.to_glib_none().0),
x_pos,
index_.as_mut_ptr(),
trailing.as_mut_ptr(),
);
(index_.assume_init(), trailing.assume_init())
}
}
}
impl Default for GlyphString {
fn default() -> Self {
Self::new()
}
}
unsafe impl Send for GlyphString {}
unsafe impl Sync for GlyphString {}