Render the grid of the goban
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556f91b70b
commit
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@ -44,6 +44,7 @@ use gtk::{
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subclass::prelude::*,
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};
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use image::io::Reader as ImageReader;
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use otg_core::Color;
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use std::{cell::RefCell, io::Cursor, rc::Rc};
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const WIDTH: i32 = 800;
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@ -140,5 +141,112 @@ impl Goban {
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ctx.set_source_rgb(0.7, 0.7, 0.7);
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let _ = ctx.paint();
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let board = self.imp().board_state.borrow();
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ctx.set_source_rgb(0.1, 0.1, 0.1);
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ctx.set_line_width(2.);
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let hspace_between = ((width - 40) as f64) / ((board.size.width - 1) as f64);
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let vspace_between = ((height - 40) as f64) / ((board.size.height - 1) as f64);
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let pen = Pen {
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x_offset: MARGIN as f64,
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y_offset: MARGIN as f64,
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hspace_between,
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vspace_between,
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};
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(0..board.size.width).for_each(|col| {
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ctx.move_to(
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(MARGIN as f64) + (col as f64) * hspace_between,
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MARGIN as f64,
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);
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ctx.line_to(
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(MARGIN as f64) + (col as f64) * hspace_between,
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(height as f64) - (MARGIN as f64),
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);
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let _ = ctx.stroke();
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});
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(0..board.size.height).for_each(|row| {
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ctx.move_to(
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MARGIN as f64,
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(MARGIN as f64) + (row as f64) * vspace_between,
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);
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ctx.line_to(
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(width - MARGIN) as f64,
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(MARGIN as f64) + (row as f64) * vspace_between,
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);
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let _ = ctx.stroke();
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});
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vec![3, 9, 15].into_iter().for_each(|col| {
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vec![3, 9, 15].into_iter().for_each(|row| {
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pen.star_point(ctx, col, row);
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});
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});
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}
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}
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struct Pen {
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x_offset: f64,
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y_offset: f64,
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hspace_between: f64,
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vspace_between: f64,
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}
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impl Pen {
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fn star_point(&self, context: &cairo::Context, row: u8, col: u8) {
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context.arc(
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self.x_offset + (col as f64) * self.hspace_between,
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self.y_offset + (row as f64) * self.vspace_between,
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5.,
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0.,
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2. * std::f64::consts::PI,
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);
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let _ = context.fill();
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}
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fn stone(
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&self,
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context: &cairo::Context,
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row: u8,
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col: u8,
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color: Color,
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liberties: Option<u8>,
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) {
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match color {
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Color::White => context.set_source_rgb(0.9, 0.9, 0.9),
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Color::Black => context.set_source_rgb(0.0, 0.0, 0.0),
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};
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self.draw_stone(context, row, col);
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if let Some(liberties) = liberties {
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let stone_location = self.stone_location(row, col);
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context.set_source_rgb(1., 0., 1.);
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context.set_font_size(32.);
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context.move_to(stone_location.0 - 10., stone_location.1 + 10.);
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let _ = context.show_text(&format!("{}", liberties));
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}
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}
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fn ghost_stone(&self, context: &cairo::Context, row: u8, col: u8, color: Color) {
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match color {
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Color::White => context.set_source_rgba(0.9, 0.9, 0.9, 0.5),
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Color::Black => context.set_source_rgba(0.0, 0.0, 0.0, 0.5),
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};
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self.draw_stone(context, row, col);
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}
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fn draw_stone(&self, context: &cairo::Context, row: u8, col: u8) {
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let radius = self.hspace_between / 2. - 2.;
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let (x_loc, y_loc) = self.stone_location(row, col);
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context.arc(x_loc, y_loc, radius, 0.0, 2.0 * std::f64::consts::PI);
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let _ = context.fill();
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}
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fn stone_location(&self, row: u8, col: u8) -> (f64, f64) {
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(
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self.x_offset + (col as f64) * self.hspace_between,
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self.y_offset + (row as f64) * self.vspace_between,
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)
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}
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}
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