hasufell/neovim-gtk
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Use fixed width for any font character

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This commit is contained in:
daa 2016-04-02 00:14:22 +03:00
parent a2813a84c7
commit 52ec77137d
1 changed files with 22 additions and 10 deletions
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32
src/ui.rs
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@ -7,6 +7,8 @@ use rmp::Value;
use rmp::value::Integer;
use cairo;
use cairo::TextExtents;
use cairo::enums::{FontWeight, FontSlant};
use gtk;
use gtk::prelude::*;
use gtk::{Window, WindowType, DrawingArea, Grid, ToolButton, ButtonBox, Orientation, Image};
@ -17,6 +19,9 @@ use neovim_lib::{Neovim, NeovimApi};
use ui_model::{UiModel, Attrs, Color};
use nvim::RedrawEvents;
const FONT_NAME: &'static str = "Droid Sans Mono for Powerline";
const FONT_SIZE: f64 = 16.0;
thread_local!(pub static UI: RefCell<Ui> = {
let thread = thread::current();
let current_thread_name = thread.name();
@ -107,6 +112,13 @@ fn gtk_key_press(_: &Window, ev: &EventKey) -> Inhibit {
Inhibit(true)
}
fn calc_char_bounds(ctx: &cairo::Context) -> TextExtents {
let font_face = cairo::FontFace::toy_create(FONT_NAME, FontSlant::Normal, FontWeight::Bold);
ctx.set_font_size(FONT_SIZE);
ctx.set_font_face(font_face);
ctx.text_extents("A")
}
fn gtk_draw(drawing_area: &DrawingArea, ctx: &cairo::Context) -> Inhibit {
let width = drawing_area.get_allocated_width() as f64;
let height = drawing_area.get_allocated_height() as f64;
@ -115,9 +127,9 @@ fn gtk_draw(drawing_area: &DrawingArea, ctx: &cairo::Context) -> Inhibit {
ctx.paint();
ctx.set_source_rgb(1.0, 1.0, 1.0);
let char_bounds = calc_char_bounds(ctx);
let font_extents = ctx.font_extents();
UI.with(|ui_cell| {
let ui = ui_cell.borrow();
@ -126,28 +138,27 @@ fn gtk_draw(drawing_area: &DrawingArea, ctx: &cairo::Context) -> Inhibit {
ctx.move_to(0.0, line_y - font_extents.descent);
for cell in line {
let slant = if cell.attrs.italic {
cairo::enums::FontSlant::Italic
FontSlant::Italic
} else {
cairo::enums::FontSlant::Normal
FontSlant::Normal
};
let weight = if cell.attrs.bold {
cairo::enums::FontWeight::Bold
FontWeight::Bold
} else {
cairo::enums::FontWeight::Normal
FontWeight::Normal
};
let font_face = cairo::FontFace::toy_create("", slant, weight);
let font_face = cairo::FontFace::toy_create(FONT_NAME, slant, weight);
ctx.set_font_face(font_face);
ctx.set_font_size(FONT_SIZE);
let bg = &cell.attrs.background;
ctx.set_source_rgb(bg.0, bg.1, bg.2);
// ctx.set_source_rgb(1.0, 0.0 , 0.0);
let text_extents = ctx.text_extents(&cell.ch.to_string());
let current_point = ctx.get_current_point();
ctx.rectangle(current_point.0,
line_y - font_extents.height,
text_extents.width,
char_bounds.width,
font_extents.height);
ctx.fill();
@ -155,6 +166,7 @@ fn gtk_draw(drawing_area: &DrawingArea, ctx: &cairo::Context) -> Inhibit {
let fg = &cell.attrs.foreground;
ctx.set_source_rgb(fg.0, fg.1, fg.2);
ctx.show_text(&cell.ch.to_string());
ctx.move_to(current_point.0 + char_bounds.width, current_point.1);
}
line_y += font_extents.height;
}