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1274 lines
47 KiB
Zig
1274 lines
47 KiB
Zig
//! This file contains functions for drawing the box drawing characters
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//! (https://en.wikipedia.org/wiki/Box-drawing_character) and related
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//! characters that are provided by the terminal.
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//!
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//! The box drawing logic is based off similar logic in Kitty and Foot.
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//! The primary drawing code was ported directly and slightly modified from Foot
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//! (https://codeberg.org/dnkl/foot/). Foot is licensed under the MIT
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//! license and is copyright 2019 Daniel Eklöf.
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//!
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//! The modifications made are primarily around spacing, DPI calculations,
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//! and adapting the code to our atlas model.
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const BoxFont = @This();
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const std = @import("std");
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const assert = std.debug.assert;
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const Allocator = std.mem.Allocator;
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const pixman = @import("pixman");
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const font = @import("main.zig");
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const Atlas = @import("../Atlas.zig");
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const log = std.log.scoped(.box_font);
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/// The cell width and height because the boxes are fit perfectly
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/// into a cell so that they all properly connect with zero spacing.
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width: u32,
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height: u32,
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/// Base thickness value for lines of the box. This is in pixels. If you
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/// want to do any DPI scaling, it is expected to be done earlier.
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thickness: u32,
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/// We use alpha-channel-only images for the box font so white causes
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/// a pixel to be shown.
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const white: pixman.Color = .{
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.red = 0xFFFF,
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.green = 0xFFFF,
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.blue = 0xFFFF,
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.alpha = 0xFFFF,
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};
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/// The thickness of a line.
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const Thickness = enum {
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light,
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heavy,
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/// Calculate the real height of a line based on its thickness
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/// and a base thickness value. The base thickness value is expected
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/// to be in pixels.
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fn height(self: Thickness, base: u32) u32 {
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return switch (self) {
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.light => base,
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.heavy => base * 2,
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};
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}
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};
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pub fn renderGlyph(
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self: BoxFont,
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alloc: Allocator,
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atlas: *Atlas,
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cp: u32,
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) !font.Glyph {
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assert(atlas.format == .greyscale);
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// Determine the config for our image buffer. The images we draw
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// for boxes are always 8bpp
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const format: pixman.FormatCode = .a8;
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const stride = format.strideForWidth(self.width);
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const len = @intCast(usize, stride * @intCast(c_int, self.height));
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// Allocate our buffer
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var data = try alloc.alloc(u32, len);
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defer alloc.free(data);
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std.mem.set(u32, data, 0);
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// Create the image we'll draw to
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const img = try pixman.Image.createBitsNoClear(
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format,
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@intCast(c_int, self.width),
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@intCast(c_int, self.height),
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data.ptr,
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stride,
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);
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defer _ = img.unref();
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try self.draw(img, cp);
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// Reserve our region in the atlas and render the glyph to it.
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const region = try atlas.reserve(alloc, self.width, self.height);
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if (region.width > 0 and region.height > 0) {
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// Convert our []u32 to []u8 since we use 8bpp formats
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assert(format.bpp() == 8);
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const len_u8 = len * 4;
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const data_u8 = @alignCast(@alignOf(u8), @ptrCast([*]u8, data.ptr)[0..len_u8]);
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const depth = atlas.format.depth();
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// We can avoid a buffer copy if our atlas width and bitmap
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// width match and the bitmap pitch is just the width (meaning
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// the data is tightly packed).
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const needs_copy = !(self.width * depth == stride);
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// If we need to copy the data, we copy it into a temporary buffer.
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const buffer = if (needs_copy) buffer: {
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var temp = try alloc.alloc(u8, self.width * self.height * depth);
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var dst_ptr = temp;
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var src_ptr = data_u8.ptr;
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var i: usize = 0;
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while (i < self.height) : (i += 1) {
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std.mem.copy(u8, dst_ptr, src_ptr[0 .. self.width * depth]);
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dst_ptr = dst_ptr[self.width * depth ..];
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src_ptr += @intCast(usize, stride);
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}
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break :buffer temp;
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} else data_u8[0..(self.width * self.height * depth)];
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defer if (buffer.ptr != data_u8.ptr) alloc.free(buffer);
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// Write the glyph information into the atlas
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assert(region.width == self.width);
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assert(region.height == self.height);
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atlas.set(region, buffer);
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}
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// Our coordinates start at the BOTTOM for our renderers so we have to
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// specify an offset of the full height because we rendered a full size
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// cell.
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const offset_y = @intCast(i32, self.height);
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return font.Glyph{
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.width = self.width,
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.height = self.height,
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.offset_x = 0,
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.offset_y = offset_y,
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.atlas_x = region.x,
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.atlas_y = region.y,
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.advance_x = @intToFloat(f32, self.width),
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};
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}
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fn draw(self: BoxFont, img: *pixman.Image, cp: u32) !void {
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switch (cp) {
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0x2500 => self.draw_light_horizontal(img),
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0x2501 => self.draw_heavy_horizontal(img),
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0x2502 => self.draw_light_vertical(img),
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0x2503 => self.draw_heavy_vertical(img),
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0x2504 => self.draw_light_triple_dash_horizontal(img),
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0x2505 => self.draw_heavy_triple_dash_horizontal(img),
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0x2506 => self.draw_light_triple_dash_vertical(img),
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0x2507 => self.draw_heavy_triple_dash_vertical(img),
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0x2508 => self.draw_light_quadruple_dash_horizontal(img),
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0x2509 => self.draw_heavy_quadruple_dash_horizontal(img),
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0x250a => self.draw_light_quadruple_dash_vertical(img),
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0x250b => self.draw_heavy_quadruple_dash_vertical(img),
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0x250c => self.draw_light_down_and_right(img),
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0x250d => self.draw_down_light_and_right_heavy(img),
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0x250e => self.draw_down_heavy_and_right_light(img),
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0x250f => self.draw_heavy_down_and_right(img),
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0x2510 => self.draw_light_down_and_left(img),
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0x2511 => self.draw_down_light_and_left_heavy(img),
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0x2512 => self.draw_down_heavy_and_left_light(img),
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0x2513 => self.draw_heavy_down_and_left(img),
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0x2514 => self.draw_light_up_and_right(img),
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0x2515 => self.draw_up_light_and_right_heavy(img),
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0x2516 => self.draw_up_heavy_and_right_light(img),
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0x2517 => self.draw_heavy_up_and_right(img),
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0x2518 => self.draw_light_up_and_left(img),
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0x2519 => self.draw_up_light_and_left_heavy(img),
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0x251a => self.draw_up_heavy_and_left_light(img),
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0x251b => self.draw_heavy_up_and_left(img),
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0x251c => self.draw_light_vertical_and_right(img),
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0x251d => self.draw_vertical_light_and_right_heavy(img),
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0x251e => self.draw_up_heavy_and_right_down_light(img),
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0x251f => self.draw_down_heavy_and_right_up_light(img),
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0x2520 => self.draw_vertical_heavy_and_right_light(img),
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0x2521 => self.draw_down_light_and_right_up_heavy(img),
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0x2522 => self.draw_up_light_and_right_down_heavy(img),
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0x2523 => self.draw_heavy_vertical_and_right(img),
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0x2524 => self.draw_light_vertical_and_left(img),
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0x2525 => self.draw_vertical_light_and_left_heavy(img),
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0x2526 => self.draw_up_heavy_and_left_down_light(img),
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0x2527 => self.draw_down_heavy_and_left_up_light(img),
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0x2528 => self.draw_vertical_heavy_and_left_light(img),
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0x2529 => self.draw_down_light_and_left_up_heavy(img),
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0x252a => self.draw_up_light_and_left_down_heavy(img),
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0x252b => self.draw_heavy_vertical_and_left(img),
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0x252c => self.draw_light_down_and_horizontal(img),
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0x252d => self.draw_left_heavy_and_right_down_light(img),
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0x252e => self.draw_right_heavy_and_left_down_light(img),
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0x252f => self.draw_down_light_and_horizontal_heavy(img),
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0x2530 => self.draw_down_heavy_and_horizontal_light(img),
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0x2531 => self.draw_right_light_and_left_down_heavy(img),
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0x2532 => self.draw_left_light_and_right_down_heavy(img),
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0x2533 => self.draw_heavy_down_and_horizontal(img),
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0x2534 => self.draw_light_up_and_horizontal(img),
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0x2535 => self.draw_left_heavy_and_right_up_light(img),
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0x2536 => self.draw_right_heavy_and_left_up_light(img),
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0x2537 => self.draw_up_light_and_horizontal_heavy(img),
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0x2538 => self.draw_up_heavy_and_horizontal_light(img),
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0x2539 => self.draw_right_light_and_left_up_heavy(img),
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0x253a => self.draw_left_light_and_right_up_heavy(img),
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0x253b => self.draw_heavy_up_and_horizontal(img),
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0x253c => self.draw_light_vertical_and_horizontal(img),
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0x253d => self.draw_left_heavy_and_right_vertical_light(img),
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0x253e => self.draw_right_heavy_and_left_vertical_light(img),
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0x253f => self.draw_vertical_light_and_horizontal_heavy(img),
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0x2540 => self.draw_up_heavy_and_down_horizontal_light(img),
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0x2541 => self.draw_down_heavy_and_up_horizontal_light(img),
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0x2542 => self.draw_vertical_heavy_and_horizontal_light(img),
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0x2543 => self.draw_left_up_heavy_and_right_down_light(img),
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0x2544 => self.draw_right_up_heavy_and_left_down_light(img),
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0x2545 => self.draw_left_down_heavy_and_right_up_light(img),
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0x2546 => self.draw_right_down_heavy_and_left_up_light(img),
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0x2547 => self.draw_down_light_and_up_horizontal_heavy(img),
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0x2548 => self.draw_up_light_and_down_horizontal_heavy(img),
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0x2549 => self.draw_right_light_and_left_vertical_heavy(img),
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0x254a => self.draw_left_light_and_right_vertical_heavy(img),
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0x254b => self.draw_heavy_vertical_and_horizontal(img),
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0x254c => self.draw_light_double_dash_horizontal(img),
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0x254d => self.draw_heavy_double_dash_horizontal(img),
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0x254e => self.draw_light_double_dash_vertical(img),
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0x254f => self.draw_heavy_double_dash_vertical(img),
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0x2550 => self.draw_double_horizontal(img),
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0x2551 => self.draw_double_vertical(img),
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0x2552 => self.draw_down_single_and_right_double(img),
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0x2553 => self.draw_down_double_and_right_single(img),
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0x2554 => self.draw_double_down_and_right(img),
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0x2555 => self.draw_down_single_and_left_double(img),
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0x2556 => self.draw_down_double_and_left_single(img),
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0x2557 => self.draw_double_down_and_left(img),
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0x2558 => self.draw_up_single_and_right_double(img),
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0x2559 => self.draw_up_double_and_right_single(img),
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0x255a => self.draw_double_up_and_right(img),
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0x255b => self.draw_up_single_and_left_double(img),
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0x255c => self.draw_up_double_and_left_single(img),
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0x255d => self.draw_double_up_and_left(img),
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0x255e => self.draw_vertical_single_and_right_double(img),
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0x255f => self.draw_vertical_double_and_right_single(img),
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0x2560 => self.draw_double_vertical_and_right(img),
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0x2561 => self.draw_vertical_single_and_left_double(img),
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0x2562 => self.draw_vertical_double_and_left_single(img),
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0x2563 => self.draw_double_vertical_and_left(img),
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0x2564 => self.draw_down_single_and_horizontal_double(img),
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0x2565 => self.draw_down_double_and_horizontal_single(img),
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0x2566 => self.draw_double_down_and_horizontal(img),
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0x2567 => self.draw_up_single_and_horizontal_double(img),
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0x2568 => self.draw_up_double_and_horizontal_single(img),
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0x2569 => self.draw_double_up_and_horizontal(img),
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0x256a => self.draw_vertical_single_and_horizontal_double(img),
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0x256b => self.draw_vertical_double_and_horizontal_single(img),
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0x256c => self.draw_double_vertical_and_horizontal(img),
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else => return error.InvalidCodepoint,
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}
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}
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fn draw_light_horizontal(self: BoxFont, img: *pixman.Image) void {
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self.hline_middle(img, .light);
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}
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fn draw_heavy_horizontal(self: BoxFont, img: *pixman.Image) void {
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self.hline_middle(img, .heavy);
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}
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fn draw_light_vertical(self: BoxFont, img: *pixman.Image) void {
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self.vline_middle(img, .light);
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}
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fn draw_heavy_vertical(self: BoxFont, img: *pixman.Image) void {
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self.vline_middle(img, .heavy);
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}
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fn draw_light_triple_dash_horizontal(self: BoxFont, img: *pixman.Image) void {
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self.draw_dash_horizontal(
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img,
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3,
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Thickness.light.height(self.thickness),
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@max(4, Thickness.light.height(self.thickness)),
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);
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}
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fn draw_heavy_triple_dash_horizontal(self: BoxFont, img: *pixman.Image) void {
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self.draw_dash_horizontal(
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img,
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3,
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Thickness.heavy.height(self.thickness),
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@max(4, Thickness.light.height(self.thickness)),
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);
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}
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fn draw_light_triple_dash_vertical(self: BoxFont, img: *pixman.Image) void {
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self.draw_dash_vertical(
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img,
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3,
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Thickness.light.height(self.thickness),
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@max(4, Thickness.light.height(self.thickness)),
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);
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}
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fn draw_heavy_triple_dash_vertical(self: BoxFont, img: *pixman.Image) void {
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self.draw_dash_vertical(
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img,
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3,
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Thickness.heavy.height(self.thickness),
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@max(4, Thickness.light.height(self.thickness)),
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);
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}
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fn draw_light_quadruple_dash_horizontal(self: BoxFont, img: *pixman.Image) void {
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self.draw_dash_horizontal(
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img,
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4,
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Thickness.light.height(self.thickness),
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@max(4, Thickness.light.height(self.thickness)),
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);
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}
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fn draw_heavy_quadruple_dash_horizontal(self: BoxFont, img: *pixman.Image) void {
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self.draw_dash_horizontal(
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img,
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4,
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Thickness.heavy.height(self.thickness),
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@max(4, Thickness.light.height(self.thickness)),
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);
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}
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fn draw_light_quadruple_dash_vertical(self: BoxFont, img: *pixman.Image) void {
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self.draw_dash_vertical(
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img,
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4,
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Thickness.light.height(self.thickness),
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@max(4, Thickness.light.height(self.thickness)),
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);
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}
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fn draw_heavy_quadruple_dash_vertical(self: BoxFont, img: *pixman.Image) void {
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self.draw_dash_vertical(
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img,
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4,
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Thickness.heavy.height(self.thickness),
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@max(4, Thickness.light.height(self.thickness)),
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);
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}
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fn draw_light_down_and_right(self: BoxFont, img: *pixman.Image) void {
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self.hline_middle_right(img, .light, .light);
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self.vline_middle_down(img, .light, .light);
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}
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fn draw_down_light_and_right_heavy(self: BoxFont, img: *pixman.Image) void {
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self.hline_middle_right(img, .light, .heavy);
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self.vline_middle_down(img, .light, .light);
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}
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fn draw_down_heavy_and_right_light(self: BoxFont, img: *pixman.Image) void {
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self.hline_middle_right(img, .light, .light);
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self.vline_middle_down(img, .heavy, .light);
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}
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fn draw_heavy_down_and_right(self: BoxFont, img: *pixman.Image) void {
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self.hline_middle_right(img, .heavy, .heavy);
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self.vline_middle_down(img, .heavy, .heavy);
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}
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fn draw_light_down_and_left(self: BoxFont, img: *pixman.Image) void {
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self.hline_middle_left(img, .light, .light);
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self.vline_middle_down(img, .light, .light);
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}
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fn draw_down_light_and_left_heavy(self: BoxFont, img: *pixman.Image) void {
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self.hline_middle_left(img, .light, .heavy);
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self.vline_middle_down(img, .light, .light);
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}
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fn draw_down_heavy_and_left_light(self: BoxFont, img: *pixman.Image) void {
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self.hline_middle_left(img, .light, .light);
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self.vline_middle_down(img, .heavy, .light);
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}
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fn draw_heavy_down_and_left(self: BoxFont, img: *pixman.Image) void {
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self.hline_middle_left(img, .heavy, .heavy);
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self.vline_middle_down(img, .heavy, .heavy);
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}
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fn draw_light_up_and_right(self: BoxFont, img: *pixman.Image) void {
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self.hline_middle_right(img, .light, .light);
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self.vline_middle_up(img, .light, .light);
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}
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fn draw_up_light_and_right_heavy(self: BoxFont, img: *pixman.Image) void {
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self.hline_middle_right(img, .light, .heavy);
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self.vline_middle_up(img, .light, .light);
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}
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fn draw_up_heavy_and_right_light(self: BoxFont, img: *pixman.Image) void {
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self.hline_middle_right(img, .light, .light);
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self.vline_middle_up(img, .heavy, .light);
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}
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fn draw_heavy_up_and_right(self: BoxFont, img: *pixman.Image) void {
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self.hline_middle_right(img, .heavy, .heavy);
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self.vline_middle_up(img, .heavy, .heavy);
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}
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|
|
fn draw_light_up_and_left(self: BoxFont, img: *pixman.Image) void {
|
|
self.hline_middle_left(img, .light, .light);
|
|
self.vline_middle_up(img, .light, .light);
|
|
}
|
|
|
|
fn draw_up_light_and_left_heavy(self: BoxFont, img: *pixman.Image) void {
|
|
self.hline_middle_left(img, .light, .heavy);
|
|
self.vline_middle_up(img, .light, .light);
|
|
}
|
|
|
|
fn draw_up_heavy_and_left_light(self: BoxFont, img: *pixman.Image) void {
|
|
self.hline_middle_left(img, .light, .light);
|
|
self.vline_middle_up(img, .heavy, .light);
|
|
}
|
|
|
|
fn draw_heavy_up_and_left(self: BoxFont, img: *pixman.Image) void {
|
|
self.hline_middle_left(img, .heavy, .heavy);
|
|
self.vline_middle_up(img, .heavy, .heavy);
|
|
}
|
|
|
|
fn draw_light_vertical_and_right(self: BoxFont, img: *pixman.Image) void {
|
|
self.hline_middle_right(img, .light, .light);
|
|
self.vline_middle(img, .light);
|
|
}
|
|
|
|
fn draw_vertical_light_and_right_heavy(self: BoxFont, img: *pixman.Image) void {
|
|
self.hline_middle_right(img, .light, .heavy);
|
|
self.vline_middle(img, .light);
|
|
}
|
|
|
|
fn draw_up_heavy_and_right_down_light(self: BoxFont, img: *pixman.Image) void {
|
|
self.hline_middle_right(img, .light, .light);
|
|
self.vline_middle_up(img, .heavy, .light);
|
|
self.vline_middle_down(img, .light, .light);
|
|
}
|
|
|
|
fn draw_down_heavy_and_right_up_light(self: BoxFont, img: *pixman.Image) void {
|
|
self.hline_middle_right(img, .light, .light);
|
|
self.vline_middle_up(img, .light, .light);
|
|
self.vline_middle_down(img, .heavy, .light);
|
|
}
|
|
|
|
fn draw_vertical_heavy_and_right_light(self: BoxFont, img: *pixman.Image) void {
|
|
self.hline_middle_right(img, .light, .light);
|
|
self.vline_middle(img, .heavy);
|
|
}
|
|
|
|
fn draw_down_light_and_right_up_heavy(self: BoxFont, img: *pixman.Image) void {
|
|
self.hline_middle_right(img, .heavy, .heavy);
|
|
self.vline_middle_up(img, .heavy, .heavy);
|
|
self.vline_middle_down(img, .light, .light);
|
|
}
|
|
|
|
fn draw_up_light_and_right_down_heavy(self: BoxFont, img: *pixman.Image) void {
|
|
self.hline_middle_right(img, .heavy, .heavy);
|
|
self.vline_middle_up(img, .light, .light);
|
|
self.vline_middle_down(img, .heavy, .heavy);
|
|
}
|
|
|
|
fn draw_heavy_vertical_and_right(self: BoxFont, img: *pixman.Image) void {
|
|
self.hline_middle_right(img, .heavy, .heavy);
|
|
self.vline_middle(img, .heavy);
|
|
}
|
|
|
|
fn draw_light_vertical_and_left(self: BoxFont, img: *pixman.Image) void {
|
|
self.hline_middle_left(img, .light, .light);
|
|
self.vline_middle(img, .light);
|
|
}
|
|
|
|
fn draw_vertical_light_and_left_heavy(self: BoxFont, img: *pixman.Image) void {
|
|
self.hline_middle_left(img, .light, .heavy);
|
|
self.vline_middle(img, .light);
|
|
}
|
|
|
|
fn draw_up_heavy_and_left_down_light(self: BoxFont, img: *pixman.Image) void {
|
|
self.hline_middle_left(img, .light, .light);
|
|
self.vline_middle_up(img, .heavy, .light);
|
|
self.vline_middle_down(img, .light, .light);
|
|
}
|
|
|
|
fn draw_down_heavy_and_left_up_light(self: BoxFont, img: *pixman.Image) void {
|
|
self.hline_middle_left(img, .light, .light);
|
|
self.vline_middle_up(img, .light, .light);
|
|
self.vline_middle_down(img, .heavy, .light);
|
|
}
|
|
|
|
fn draw_vertical_heavy_and_left_light(self: BoxFont, img: *pixman.Image) void {
|
|
self.hline_middle_left(img, .light, .light);
|
|
self.vline_middle(img, .heavy);
|
|
}
|
|
|
|
fn draw_down_light_and_left_up_heavy(self: BoxFont, img: *pixman.Image) void {
|
|
self.hline_middle_left(img, .heavy, .heavy);
|
|
self.vline_middle_up(img, .heavy, .heavy);
|
|
self.vline_middle_down(img, .light, .light);
|
|
}
|
|
|
|
fn draw_up_light_and_left_down_heavy(self: BoxFont, img: *pixman.Image) void {
|
|
self.hline_middle_left(img, .heavy, .heavy);
|
|
self.vline_middle_up(img, .light, .light);
|
|
self.vline_middle_down(img, .heavy, .heavy);
|
|
}
|
|
|
|
fn draw_heavy_vertical_and_left(self: BoxFont, img: *pixman.Image) void {
|
|
self.hline_middle_left(img, .heavy, .heavy);
|
|
self.vline_middle(img, .heavy);
|
|
}
|
|
|
|
fn draw_light_down_and_horizontal(self: BoxFont, img: *pixman.Image) void {
|
|
self.hline_middle(img, .light);
|
|
self.vline_middle_down(img, .light, .light);
|
|
}
|
|
|
|
fn draw_left_heavy_and_right_down_light(self: BoxFont, img: *pixman.Image) void {
|
|
self.hline_middle_left(img, .light, .heavy);
|
|
self.hline_middle_right(img, .light, .light);
|
|
self.vline_middle_down(img, .light, .light);
|
|
}
|
|
|
|
fn draw_right_heavy_and_left_down_light(self: BoxFont, img: *pixman.Image) void {
|
|
self.hline_middle_left(img, .light, .light);
|
|
self.hline_middle_right(img, .light, .heavy);
|
|
self.vline_middle_down(img, .light, .light);
|
|
}
|
|
|
|
fn draw_down_light_and_horizontal_heavy(self: BoxFont, img: *pixman.Image) void {
|
|
self.hline_middle(img, .heavy);
|
|
self.vline_middle_down(img, .light, .light);
|
|
}
|
|
|
|
fn draw_down_heavy_and_horizontal_light(self: BoxFont, img: *pixman.Image) void {
|
|
self.hline_middle(img, .light);
|
|
self.vline_middle_down(img, .heavy, .light);
|
|
}
|
|
|
|
fn draw_right_light_and_left_down_heavy(self: BoxFont, img: *pixman.Image) void {
|
|
self.hline_middle_left(img, .heavy, .heavy);
|
|
self.hline_middle_right(img, .light, .light);
|
|
self.vline_middle_down(img, .heavy, .heavy);
|
|
}
|
|
|
|
fn draw_left_light_and_right_down_heavy(self: BoxFont, img: *pixman.Image) void {
|
|
self.hline_middle_left(img, .light, .light);
|
|
self.hline_middle_right(img, .heavy, .heavy);
|
|
self.vline_middle_down(img, .heavy, .heavy);
|
|
}
|
|
|
|
fn draw_heavy_down_and_horizontal(self: BoxFont, img: *pixman.Image) void {
|
|
self.hline_middle(img, .heavy);
|
|
self.vline_middle_down(img, .heavy, .heavy);
|
|
}
|
|
|
|
fn draw_light_up_and_horizontal(self: BoxFont, img: *pixman.Image) void {
|
|
self.hline_middle(img, .light);
|
|
self.vline_middle_up(img, .light, .light);
|
|
}
|
|
|
|
fn draw_left_heavy_and_right_up_light(self: BoxFont, img: *pixman.Image) void {
|
|
self.hline_middle_left(img, .light, .heavy);
|
|
self.hline_middle_right(img, .light, .light);
|
|
self.vline_middle_up(img, .light, .light);
|
|
}
|
|
|
|
fn draw_right_heavy_and_left_up_light(self: BoxFont, img: *pixman.Image) void {
|
|
self.hline_middle_left(img, .light, .light);
|
|
self.hline_middle_right(img, .light, .heavy);
|
|
self.vline_middle_up(img, .light, .light);
|
|
}
|
|
|
|
fn draw_up_light_and_horizontal_heavy(self: BoxFont, img: *pixman.Image) void {
|
|
self.hline_middle(img, .light);
|
|
self.vline_middle_up(img, .light, .light);
|
|
}
|
|
|
|
fn draw_up_heavy_and_horizontal_light(self: BoxFont, img: *pixman.Image) void {
|
|
self.hline_middle(img, .light);
|
|
self.vline_middle_up(img, .heavy, .light);
|
|
}
|
|
|
|
fn draw_right_light_and_left_up_heavy(self: BoxFont, img: *pixman.Image) void {
|
|
self.hline_middle_left(img, .heavy, .heavy);
|
|
self.hline_middle_right(img, .light, .light);
|
|
self.vline_middle_up(img, .heavy, .heavy);
|
|
}
|
|
|
|
fn draw_left_light_and_right_up_heavy(self: BoxFont, img: *pixman.Image) void {
|
|
self.hline_middle_left(img, .light, .light);
|
|
self.hline_middle_right(img, .heavy, .heavy);
|
|
self.vline_middle_up(img, .heavy, .heavy);
|
|
}
|
|
|
|
fn draw_heavy_up_and_horizontal(self: BoxFont, img: *pixman.Image) void {
|
|
self.hline_middle(img, .heavy);
|
|
self.vline_middle_up(img, .heavy, .heavy);
|
|
}
|
|
|
|
fn draw_light_vertical_and_horizontal(self: BoxFont, img: *pixman.Image) void {
|
|
self.hline_middle(img, .light);
|
|
self.vline_middle(img, .light);
|
|
}
|
|
|
|
fn draw_left_heavy_and_right_vertical_light(self: BoxFont, img: *pixman.Image) void {
|
|
self.hline_middle_left(img, .light, .heavy);
|
|
self.hline_middle_right(img, .light, .light);
|
|
self.vline_middle(img, .light);
|
|
}
|
|
|
|
fn draw_right_heavy_and_left_vertical_light(self: BoxFont, img: *pixman.Image) void {
|
|
self.hline_middle_left(img, .light, .light);
|
|
self.hline_middle_right(img, .light, .heavy);
|
|
self.vline_middle(img, .light);
|
|
}
|
|
|
|
fn draw_vertical_light_and_horizontal_heavy(self: BoxFont, img: *pixman.Image) void {
|
|
self.hline_middle(img, .heavy);
|
|
self.vline_middle(img, .light);
|
|
}
|
|
|
|
fn draw_up_heavy_and_down_horizontal_light(self: BoxFont, img: *pixman.Image) void {
|
|
self.hline_middle(img, .light);
|
|
self.vline_middle_up(img, .heavy, .heavy);
|
|
self.vline_middle_down(img, .light, .light);
|
|
}
|
|
|
|
fn draw_down_heavy_and_up_horizontal_light(self: BoxFont, img: *pixman.Image) void {
|
|
self.hline_middle(img, .light);
|
|
self.vline_middle_up(img, .light, .light);
|
|
self.vline_middle_down(img, .heavy, .light);
|
|
}
|
|
|
|
fn draw_vertical_heavy_and_horizontal_light(self: BoxFont, img: *pixman.Image) void {
|
|
self.hline_middle(img, .light);
|
|
self.vline_middle(img, .heavy);
|
|
}
|
|
|
|
fn draw_left_up_heavy_and_right_down_light(self: BoxFont, img: *pixman.Image) void {
|
|
self.hline_middle_left(img, .heavy, .heavy);
|
|
self.hline_middle_right(img, .light, .light);
|
|
self.vline_middle_up(img, .heavy, .heavy);
|
|
self.vline_middle_down(img, .light, .light);
|
|
}
|
|
|
|
fn draw_right_up_heavy_and_left_down_light(self: BoxFont, img: *pixman.Image) void {
|
|
self.hline_middle_left(img, .light, .light);
|
|
self.hline_middle_right(img, .heavy, .heavy);
|
|
self.vline_middle_up(img, .heavy, .heavy);
|
|
self.vline_middle_down(img, .light, .light);
|
|
}
|
|
|
|
fn draw_left_down_heavy_and_right_up_light(self: BoxFont, img: *pixman.Image) void {
|
|
self.hline_middle_left(img, .heavy, .heavy);
|
|
self.hline_middle_right(img, .light, .light);
|
|
self.vline_middle_up(img, .light, .light);
|
|
self.vline_middle_down(img, .heavy, .heavy);
|
|
}
|
|
|
|
fn draw_right_down_heavy_and_left_up_light(self: BoxFont, img: *pixman.Image) void {
|
|
self.hline_middle_left(img, .light, .light);
|
|
self.hline_middle_right(img, .heavy, .heavy);
|
|
self.vline_middle_up(img, .light, .light);
|
|
self.vline_middle_down(img, .heavy, .heavy);
|
|
}
|
|
|
|
fn draw_down_light_and_up_horizontal_heavy(self: BoxFont, img: *pixman.Image) void {
|
|
self.hline_middle(img, .heavy);
|
|
self.vline_middle_up(img, .heavy, .heavy);
|
|
self.vline_middle_down(img, .light, .light);
|
|
}
|
|
|
|
fn draw_up_light_and_down_horizontal_heavy(self: BoxFont, img: *pixman.Image) void {
|
|
self.hline_middle(img, .heavy);
|
|
self.vline_middle_up(img, .light, .light);
|
|
self.vline_middle_down(img, .heavy, .heavy);
|
|
}
|
|
|
|
fn draw_right_light_and_left_vertical_heavy(self: BoxFont, img: *pixman.Image) void {
|
|
self.hline_middle_left(img, .heavy, .heavy);
|
|
self.hline_middle_right(img, .light, .light);
|
|
self.vline_middle(img, .heavy);
|
|
}
|
|
|
|
fn draw_left_light_and_right_vertical_heavy(self: BoxFont, img: *pixman.Image) void {
|
|
self.hline_middle_left(img, .light, .light);
|
|
self.hline_middle_right(img, .heavy, .heavy);
|
|
self.vline_middle(img, .heavy);
|
|
}
|
|
|
|
fn draw_heavy_vertical_and_horizontal(self: BoxFont, img: *pixman.Image) void {
|
|
self.hline_middle(img, .heavy);
|
|
self.vline_middle(img, .heavy);
|
|
}
|
|
|
|
fn draw_light_double_dash_horizontal(self: BoxFont, img: *pixman.Image) void {
|
|
self.draw_dash_horizontal(
|
|
img,
|
|
2,
|
|
Thickness.light.height(self.thickness),
|
|
Thickness.light.height(self.thickness),
|
|
);
|
|
}
|
|
|
|
fn draw_heavy_double_dash_horizontal(self: BoxFont, img: *pixman.Image) void {
|
|
self.draw_dash_horizontal(
|
|
img,
|
|
2,
|
|
Thickness.heavy.height(self.thickness),
|
|
Thickness.heavy.height(self.thickness),
|
|
);
|
|
}
|
|
|
|
fn draw_light_double_dash_vertical(self: BoxFont, img: *pixman.Image) void {
|
|
self.draw_dash_vertical(
|
|
img,
|
|
2,
|
|
Thickness.light.height(self.thickness),
|
|
Thickness.heavy.height(self.thickness),
|
|
);
|
|
}
|
|
|
|
fn draw_heavy_double_dash_vertical(self: BoxFont, img: *pixman.Image) void {
|
|
self.draw_dash_vertical(
|
|
img,
|
|
2,
|
|
Thickness.heavy.height(self.thickness),
|
|
Thickness.heavy.height(self.thickness),
|
|
);
|
|
}
|
|
|
|
fn draw_double_horizontal(self: BoxFont, img: *pixman.Image) void {
|
|
const thick_px = Thickness.light.height(self.thickness);
|
|
const mid = (self.height - thick_px * 3) / 2;
|
|
self.hline(img, 0, self.width, mid, thick_px);
|
|
self.hline(img, 0, self.width, mid + 2 * thick_px, thick_px);
|
|
}
|
|
|
|
fn draw_double_vertical(self: BoxFont, img: *pixman.Image) void {
|
|
const thick_px = Thickness.light.height(self.thickness);
|
|
const mid = (self.width - thick_px * 3) / 2;
|
|
self.vline(img, 0, self.height, mid, thick_px);
|
|
self.vline(img, 0, self.height, mid + 2 * thick_px, thick_px);
|
|
}
|
|
|
|
fn draw_down_single_and_right_double(self: BoxFont, img: *pixman.Image) void {
|
|
const thick_px = Thickness.light.height(self.thickness);
|
|
const hmid = (self.height - thick_px * 3) / 2;
|
|
const vmid = (self.width - thick_px) / 2;
|
|
self.vline_middle_down(img, .light, .light);
|
|
self.hline(img, vmid, self.width, hmid, thick_px);
|
|
self.hline(img, vmid, self.width, hmid + 2 * thick_px, thick_px);
|
|
}
|
|
|
|
fn draw_down_double_and_right_single(self: BoxFont, img: *pixman.Image) void {
|
|
const thick_px = Thickness.light.height(self.thickness);
|
|
const hmid = (self.height - thick_px) / 2;
|
|
const vmid = (self.width - thick_px * 3) / 2;
|
|
self.hline_middle_right(img, .light, .light);
|
|
self.vline(img, hmid, self.height, vmid, thick_px);
|
|
self.vline(img, hmid, self.height, vmid + 2 * thick_px, thick_px);
|
|
}
|
|
|
|
fn draw_double_down_and_right(self: BoxFont, img: *pixman.Image) void {
|
|
const thick_px = Thickness.light.height(self.thickness);
|
|
const hmid = (self.height - thick_px * 3) / 2;
|
|
const vmid = (self.width - thick_px * 3) / 2;
|
|
self.vline(img, hmid, self.height, vmid, thick_px);
|
|
self.vline(img, hmid + 2 * thick_px, self.height, vmid + 2 * thick_px, thick_px);
|
|
self.hline(img, vmid, self.width, hmid, thick_px);
|
|
self.hline(img, vmid + 2 * thick_px, self.width, hmid + 2 * thick_px, thick_px);
|
|
}
|
|
|
|
fn draw_down_single_and_left_double(self: BoxFont, img: *pixman.Image) void {
|
|
const thick_px = Thickness.light.height(self.thickness);
|
|
const hmid = (self.height - thick_px * 3) / 2;
|
|
const vmid = (self.width + thick_px) / 2;
|
|
self.vline_middle_down(img, .light, .light);
|
|
self.hline(img, 0, vmid, hmid, thick_px);
|
|
self.hline(img, 0, vmid, hmid + 2 * thick_px, thick_px);
|
|
}
|
|
|
|
fn draw_down_double_and_left_single(self: BoxFont, img: *pixman.Image) void {
|
|
const thick_px = Thickness.light.height(self.thickness);
|
|
const hmid = (self.height - thick_px) / 2;
|
|
const vmid = (self.width - thick_px * 3) / 2;
|
|
self.hline_middle_left(img, .light, .light);
|
|
self.vline(img, hmid, self.height, vmid, thick_px);
|
|
self.vline(img, hmid, self.height, vmid + 2 * thick_px, thick_px);
|
|
}
|
|
|
|
fn draw_double_down_and_left(self: BoxFont, img: *pixman.Image) void {
|
|
const thick_px = Thickness.light.height(self.thickness);
|
|
const hmid = (self.height - thick_px * 3) / 2;
|
|
const vmid = (self.width - thick_px * 3) / 2;
|
|
self.vline(img, hmid + 2 * thick_px, self.height, vmid, thick_px);
|
|
self.vline(img, hmid, self.height, vmid + 2 * thick_px, thick_px);
|
|
self.hline(img, 0, vmid + 2 * thick_px, hmid, thick_px);
|
|
self.hline(img, 0, vmid, hmid + 2 * thick_px, thick_px);
|
|
}
|
|
|
|
fn draw_up_single_and_right_double(self: BoxFont, img: *pixman.Image) void {
|
|
const thick_px = Thickness.light.height(self.thickness);
|
|
const hmid = (self.height - thick_px * 3) / 2;
|
|
const vmid = (self.width - thick_px) / 2;
|
|
self.vline_middle_up(img, .light, .light);
|
|
self.hline(img, vmid, self.width, hmid, thick_px);
|
|
self.hline(img, vmid, self.width, hmid + 2 * thick_px, thick_px);
|
|
}
|
|
|
|
fn draw_up_double_and_right_single(self: BoxFont, img: *pixman.Image) void {
|
|
const thick_px = Thickness.light.height(self.thickness);
|
|
const hmid = (self.height + thick_px) / 2;
|
|
const vmid = (self.width - thick_px * 3) / 2;
|
|
self.hline_middle_right(img, .light, .light);
|
|
self.vline(img, 0, hmid, vmid, thick_px);
|
|
self.vline(img, 0, hmid, vmid + 2 * thick_px, thick_px);
|
|
}
|
|
|
|
fn draw_double_up_and_right(self: BoxFont, img: *pixman.Image) void {
|
|
const thick_px = Thickness.light.height(self.thickness);
|
|
const hmid = (self.height - thick_px * 3) / 2;
|
|
const vmid = (self.width - thick_px * 3) / 2;
|
|
self.vline(img, 0, hmid + 2 * thick_px, vmid, thick_px);
|
|
self.vline(img, 0, hmid, vmid + 2 * thick_px, thick_px);
|
|
self.hline(img, vmid + 2 * thick_px, self.width, hmid, thick_px);
|
|
self.hline(img, vmid, self.width, hmid + 2 * thick_px, thick_px);
|
|
}
|
|
|
|
fn draw_up_single_and_left_double(self: BoxFont, img: *pixman.Image) void {
|
|
const thick_px = Thickness.light.height(self.thickness);
|
|
const hmid = (self.height - thick_px * 3) / 2;
|
|
const vmid = (self.width + thick_px) / 2;
|
|
self.vline_middle_up(img, .light, .light);
|
|
self.hline(img, 0, vmid, hmid, thick_px);
|
|
self.hline(img, 0, vmid, hmid + 2 * thick_px, thick_px);
|
|
}
|
|
|
|
fn draw_up_double_and_left_single(self: BoxFont, img: *pixman.Image) void {
|
|
const thick_px = Thickness.light.height(self.thickness);
|
|
const hmid = (self.height + thick_px) / 2;
|
|
const vmid = (self.width - thick_px * 3) / 2;
|
|
self.hline_middle_left(img, .light, .light);
|
|
self.vline(img, 0, hmid, vmid, thick_px);
|
|
self.vline(img, 0, hmid, vmid + 2 * thick_px, thick_px);
|
|
}
|
|
|
|
fn draw_double_up_and_left(self: BoxFont, img: *pixman.Image) void {
|
|
const thick_px = Thickness.light.height(self.thickness);
|
|
const hmid = (self.height - thick_px * 3) / 2;
|
|
const vmid = (self.width - thick_px * 3) / 2;
|
|
self.vline(img, 0, hmid + 0 * thick_px + thick_px, vmid, thick_px);
|
|
self.vline(img, 0, hmid + 2 * thick_px + thick_px, vmid + 2 * thick_px, thick_px);
|
|
self.hline(img, 0, vmid, hmid, thick_px);
|
|
self.hline(img, 0, vmid, hmid + 2 * thick_px, thick_px);
|
|
}
|
|
|
|
fn draw_vertical_single_and_right_double(self: BoxFont, img: *pixman.Image) void {
|
|
const thick_px = Thickness.light.height(self.thickness);
|
|
const hmid = (self.height - thick_px * 3) / 2;
|
|
const vmid = (self.width - thick_px) / 2;
|
|
self.vline_middle(img, .light);
|
|
self.hline(img, vmid, self.width, hmid, thick_px);
|
|
self.hline(img, vmid, self.width, hmid + 2 * thick_px, thick_px);
|
|
}
|
|
|
|
fn draw_vertical_double_and_right_single(self: BoxFont, img: *pixman.Image) void {
|
|
const thick_px = Thickness.light.height(self.thickness);
|
|
const vmid = (self.width - thick_px * 3) / 2;
|
|
self.hline(img, vmid + 2 * thick_px, self.width, (self.height - thick_px) / 2, thick_px);
|
|
self.vline(img, 0, self.height, vmid, thick_px);
|
|
self.vline(img, 0, self.height, vmid + 2 * thick_px, thick_px);
|
|
}
|
|
|
|
fn draw_double_vertical_and_right(self: BoxFont, img: *pixman.Image) void {
|
|
const thick_px = Thickness.light.height(self.thickness);
|
|
const hmid = (self.height - thick_px * 3) / 2;
|
|
const vmid = (self.width - thick_px * 3) / 2;
|
|
self.vline(img, 0, self.height, vmid, thick_px);
|
|
self.vline(img, 0, hmid, vmid + 2 * thick_px, thick_px);
|
|
self.vline(img, hmid + 2 * thick_px, self.height, vmid + 2 * thick_px, thick_px);
|
|
self.hline(img, vmid + 2 * thick_px, self.width, hmid, thick_px);
|
|
self.hline(img, vmid + 2 * thick_px, self.width, hmid + 2 * thick_px, thick_px);
|
|
}
|
|
|
|
fn draw_vertical_single_and_left_double(self: BoxFont, img: *pixman.Image) void {
|
|
const thick_px = Thickness.light.height(self.thickness);
|
|
const hmid = (self.height - thick_px * 3) / 2;
|
|
const vmid = (self.width + thick_px) / 2;
|
|
self.vline_middle(img, .light);
|
|
self.hline(img, 0, vmid, hmid, thick_px);
|
|
self.hline(img, 0, vmid, hmid + 2 * thick_px, thick_px);
|
|
}
|
|
|
|
fn draw_vertical_double_and_left_single(self: BoxFont, img: *pixman.Image) void {
|
|
const thick_px = Thickness.light.height(self.thickness);
|
|
const vmid = (self.width - thick_px * 3) / 2;
|
|
self.hline(img, 0, vmid, (self.height - thick_px) / 2, thick_px);
|
|
self.vline(img, 0, self.height, vmid, thick_px);
|
|
self.vline(img, 0, self.height, vmid + 2 * thick_px, thick_px);
|
|
}
|
|
|
|
fn draw_double_vertical_and_left(self: BoxFont, img: *pixman.Image) void {
|
|
const thick_px = Thickness.light.height(self.thickness);
|
|
const hmid = (self.height - thick_px * 3) / 2;
|
|
const vmid = (self.width - thick_px * 3) / 2;
|
|
self.vline(img, 0, self.height, vmid + 2 * thick_px, thick_px);
|
|
self.vline(img, 0, hmid, vmid, thick_px);
|
|
self.vline(img, hmid + 2 * thick_px, self.height, vmid, thick_px);
|
|
self.hline(img, 0, vmid + thick_px, hmid, thick_px);
|
|
self.hline(img, 0, vmid, hmid + 2 * thick_px, thick_px);
|
|
}
|
|
|
|
fn draw_down_single_and_horizontal_double(self: BoxFont, img: *pixman.Image) void {
|
|
const thick_px = Thickness.light.height(self.thickness);
|
|
const hmid = (self.height - thick_px * 3) / 2;
|
|
self.vline(img, hmid + 2 * thick_px, self.height, (self.width - thick_px) / 2, thick_px);
|
|
self.hline(img, 0, self.width, hmid, thick_px);
|
|
self.hline(img, 0, self.width, hmid + 2 * thick_px, thick_px);
|
|
}
|
|
|
|
fn draw_down_double_and_horizontal_single(self: BoxFont, img: *pixman.Image) void {
|
|
const thick_px = Thickness.light.height(self.thickness);
|
|
const hmid = (self.height - thick_px) / 2;
|
|
const vmid = (self.width - thick_px * 3) / 2;
|
|
self.hline_middle(img, .light);
|
|
self.vline(img, hmid, self.height, vmid, thick_px);
|
|
self.vline(img, hmid, self.height, vmid + 2 * thick_px, thick_px);
|
|
}
|
|
|
|
fn draw_double_down_and_horizontal(self: BoxFont, img: *pixman.Image) void {
|
|
const thick_px = Thickness.light.height(self.thickness);
|
|
const hmid = (self.height - thick_px * 3) / 2;
|
|
const vmid = (self.width - thick_px * 3) / 2;
|
|
self.hline(img, 0, self.width, hmid, thick_px);
|
|
self.hline(img, 0, vmid, hmid + 2 * thick_px, thick_px);
|
|
self.hline(img, vmid + 2 * thick_px, self.width, hmid + 2 * thick_px, thick_px);
|
|
self.vline(img, hmid + 2 * thick_px, self.height, vmid, thick_px);
|
|
self.vline(img, hmid + 2 * thick_px, self.height, vmid + 2 * thick_px, thick_px);
|
|
}
|
|
|
|
fn draw_up_single_and_horizontal_double(self: BoxFont, img: *pixman.Image) void {
|
|
const thick_px = Thickness.light.height(self.thickness);
|
|
const hmid = (self.height - thick_px * 3) / 2;
|
|
const vmid = (self.width - thick_px) / 2;
|
|
self.vline(img, 0, hmid, vmid, thick_px);
|
|
self.hline(img, 0, self.width, hmid, thick_px);
|
|
self.hline(img, 0, self.width, hmid + 2 * thick_px, thick_px);
|
|
}
|
|
|
|
fn draw_up_double_and_horizontal_single(self: BoxFont, img: *pixman.Image) void {
|
|
const thick_px = Thickness.light.height(self.thickness);
|
|
const hmid = (self.height - thick_px) / 2;
|
|
const vmid = (self.width - thick_px * 3) / 2;
|
|
self.hline_middle(img, .light);
|
|
self.vline(img, 0, hmid, vmid, thick_px);
|
|
self.vline(img, 0, hmid, vmid + 2 * thick_px, thick_px);
|
|
}
|
|
|
|
fn draw_double_up_and_horizontal(self: BoxFont, img: *pixman.Image) void {
|
|
const thick_px = Thickness.light.height(self.thickness);
|
|
const hmid = (self.height - thick_px * 3) / 2;
|
|
const vmid = (self.width - thick_px * 3) / 2;
|
|
self.vline(img, 0, hmid, vmid, thick_px);
|
|
self.vline(img, 0, hmid, vmid + 2 * thick_px, thick_px);
|
|
self.hline(img, 0, vmid + thick_px, hmid, thick_px);
|
|
self.hline(img, vmid + 2 * thick_px, self.width, hmid, thick_px);
|
|
self.hline(img, 0, self.width, hmid + 2 * thick_px, thick_px);
|
|
}
|
|
|
|
fn draw_vertical_single_and_horizontal_double(self: BoxFont, img: *pixman.Image) void {
|
|
const thick_px = Thickness.light.height(self.thickness);
|
|
const hmid = (self.height - thick_px * 3) / 2;
|
|
self.vline_middle(img, .light);
|
|
self.hline(img, 0, self.width, hmid, thick_px);
|
|
self.hline(img, 0, self.width, hmid + 2 * thick_px, thick_px);
|
|
}
|
|
|
|
fn draw_vertical_double_and_horizontal_single(self: BoxFont, img: *pixman.Image) void {
|
|
const thick_px = Thickness.light.height(self.thickness);
|
|
const vmid = (self.width - thick_px * 3) / 2;
|
|
self.hline_middle(img, .light);
|
|
self.vline(img, 0, self.height, vmid, thick_px);
|
|
self.vline(img, 0, self.height, vmid + 2 * thick_px, thick_px);
|
|
}
|
|
|
|
fn draw_double_vertical_and_horizontal(self: BoxFont, img: *pixman.Image) void {
|
|
const thick_px = Thickness.light.height(self.thickness);
|
|
const hmid = (self.height - thick_px * 3) / 2;
|
|
const vmid = (self.width - thick_px * 3) / 2;
|
|
self.hline(img, 0, vmid, hmid, thick_px);
|
|
self.hline(img, vmid + 2 * thick_px, self.width, hmid, thick_px);
|
|
self.hline(img, 0, vmid, hmid + 2 * thick_px, thick_px);
|
|
self.hline(img, vmid + 2 * thick_px, self.width, hmid + 2 * thick_px, thick_px);
|
|
self.vline(img, 0, hmid + thick_px, vmid, thick_px);
|
|
self.vline(img, 0, hmid, vmid + 2 * thick_px, thick_px);
|
|
self.vline(img, hmid + 2 * thick_px, self.height, vmid, thick_px);
|
|
self.vline(img, hmid + 2 * thick_px, self.height, vmid + 2 * thick_px, thick_px);
|
|
}
|
|
|
|
fn draw_dash_horizontal(
|
|
self: BoxFont,
|
|
img: *pixman.Image,
|
|
count: u8,
|
|
thick_px: u32,
|
|
gap: u32,
|
|
) void {
|
|
assert(count >= 2 and count <= 4);
|
|
|
|
// The number of gaps we have is one less than the number of dashes.
|
|
// "- - -" => 2 gaps
|
|
const gap_count = count - 1;
|
|
|
|
// Determine the width of our dashes
|
|
const dash_width = dash_width: {
|
|
var gap_i = gap;
|
|
var dash_width = (self.width - (gap_count * gap_i)) / count;
|
|
while (dash_width <= 0 and gap_i > 1) {
|
|
gap_i -= 1;
|
|
dash_width = (self.width - (gap_count * gap_i)) / count;
|
|
}
|
|
|
|
// If we can't fit any dashes then we just render a horizontal line.
|
|
if (dash_width <= 0) {
|
|
self.hline_middle(img, .light);
|
|
return;
|
|
}
|
|
|
|
break :dash_width dash_width;
|
|
};
|
|
|
|
// Our total width should be less than our real width
|
|
assert(count * dash_width + gap_count * gap <= self.width);
|
|
const remaining = self.width - count * dash_width - gap_count * gap;
|
|
|
|
var x: [4]u32 = .{0} ** 4;
|
|
var w: [4]u32 = .{dash_width} ** 4;
|
|
x[1] = x[0] + w[0] + gap;
|
|
if (count == 2)
|
|
w[1] = self.width - x[1]
|
|
else if (count == 3)
|
|
w[1] += remaining
|
|
else
|
|
w[1] += remaining / 2;
|
|
|
|
if (count >= 3) {
|
|
x[2] = x[1] + w[1] + gap;
|
|
if (count == 3)
|
|
w[2] = self.width - x[2]
|
|
else
|
|
w[2] += remaining - remaining / 2;
|
|
}
|
|
|
|
if (count >= 4) {
|
|
x[3] = x[2] + w[2] + gap;
|
|
w[3] = self.width - x[3];
|
|
}
|
|
|
|
self.hline(img, x[0], x[0] + w[0], (self.height - thick_px) / 2, thick_px);
|
|
self.hline(img, x[1], x[1] + w[1], (self.height - thick_px) / 2, thick_px);
|
|
if (count >= 3)
|
|
self.hline(img, x[2], x[2] + w[2], (self.height - thick_px) / 2, thick_px);
|
|
if (count >= 4)
|
|
self.hline(img, x[3], x[3] + w[3], (self.height - thick_px) / 2, thick_px);
|
|
}
|
|
|
|
fn draw_dash_vertical(
|
|
self: BoxFont,
|
|
img: *pixman.Image,
|
|
count: u8,
|
|
thick_px: u32,
|
|
gap: u32,
|
|
) void {
|
|
assert(count >= 2 and count <= 4);
|
|
|
|
// The number of gaps we have is one less than the number of dashes.
|
|
// "- - -" => 2 gaps
|
|
const gap_count = count - 1;
|
|
|
|
// Determine the height of our dashes
|
|
const dash_height = dash_height: {
|
|
var gap_i = gap;
|
|
var dash_height = (self.height - (gap_count * gap_i)) / count;
|
|
while (dash_height <= 0 and gap_i > 1) {
|
|
gap_i -= 1;
|
|
dash_height = (self.height - (gap_count * gap_i)) / count;
|
|
}
|
|
|
|
// If we can't fit any dashes then we just render a horizontal line.
|
|
if (dash_height <= 0) {
|
|
self.vline_middle(img, .light);
|
|
return;
|
|
}
|
|
|
|
break :dash_height dash_height;
|
|
};
|
|
|
|
// Our total height should be less than our real height
|
|
assert(count * dash_height + gap_count * gap <= self.height);
|
|
const remaining = self.height - count * dash_height - gap_count * gap;
|
|
|
|
var y: [4]u32 = .{0} ** 4;
|
|
var h: [4]u32 = .{dash_height} ** 4;
|
|
y[1] = y[0] + h[0] + gap;
|
|
if (count == 2)
|
|
h[1] = self.height - y[1]
|
|
else if (count == 3)
|
|
h[1] += remaining
|
|
else
|
|
h[1] += remaining / 2;
|
|
|
|
if (count >= 3) {
|
|
y[2] = y[1] + h[1] + gap;
|
|
if (count == 3)
|
|
h[2] = self.height - y[2]
|
|
else
|
|
h[2] += remaining - remaining / 2;
|
|
}
|
|
|
|
if (count >= 4) {
|
|
y[3] = y[2] + h[2] + gap;
|
|
h[3] = self.height - y[3];
|
|
}
|
|
|
|
self.vline(img, y[0], y[0] + h[0], (self.width - thick_px) / 2, thick_px);
|
|
self.vline(img, y[1], y[1] + h[1], (self.width - thick_px) / 2, thick_px);
|
|
if (count >= 3)
|
|
self.vline(img, y[2], y[2] + h[2], (self.width - thick_px) / 2, thick_px);
|
|
if (count >= 4)
|
|
self.vline(img, y[3], y[3] + h[3], (self.width - thick_px) / 2, thick_px);
|
|
}
|
|
|
|
fn vline_middle(self: BoxFont, img: *pixman.Image, thickness: Thickness) void {
|
|
const thick_px = thickness.height(self.thickness);
|
|
self.vline(img, 0, self.height, (self.width - thick_px) / 2, thick_px);
|
|
}
|
|
|
|
fn vline_middle_up(
|
|
self: BoxFont,
|
|
img: *pixman.Image,
|
|
vthickness: Thickness,
|
|
hthickness: Thickness,
|
|
) void {
|
|
const hthick_px = hthickness.height(self.thickness);
|
|
const vthick_px = vthickness.height(self.thickness);
|
|
self.vline(
|
|
img,
|
|
0,
|
|
(self.height + hthick_px) / 2,
|
|
(self.width - vthick_px) / 2,
|
|
vthick_px,
|
|
);
|
|
}
|
|
|
|
fn vline_middle_down(
|
|
self: BoxFont,
|
|
img: *pixman.Image,
|
|
vthickness: Thickness,
|
|
hthickness: Thickness,
|
|
) void {
|
|
const hthick_px = hthickness.height(self.thickness);
|
|
const vthick_px = vthickness.height(self.thickness);
|
|
self.vline(
|
|
img,
|
|
(self.height - hthick_px) / 2,
|
|
self.height,
|
|
(self.width - vthick_px) / 2,
|
|
vthick_px,
|
|
);
|
|
}
|
|
|
|
fn hline_middle(self: BoxFont, img: *pixman.Image, thickness: Thickness) void {
|
|
const thick_px = thickness.height(self.thickness);
|
|
self.hline(img, 0, self.width, (self.height - thick_px) / 2, thick_px);
|
|
}
|
|
|
|
fn hline_middle_left(
|
|
self: BoxFont,
|
|
img: *pixman.Image,
|
|
vthickness: Thickness,
|
|
hthickness: Thickness,
|
|
) void {
|
|
const hthick_px = hthickness.height(self.thickness);
|
|
const vthick_px = vthickness.height(self.thickness);
|
|
self.hline(
|
|
img,
|
|
0,
|
|
(self.width + vthick_px) / 2,
|
|
(self.height - hthick_px) / 2,
|
|
hthick_px,
|
|
);
|
|
}
|
|
|
|
fn hline_middle_right(
|
|
self: BoxFont,
|
|
img: *pixman.Image,
|
|
vthickness: Thickness,
|
|
hthickness: Thickness,
|
|
) void {
|
|
const hthick_px = hthickness.height(self.thickness);
|
|
const vthick_px = vthickness.height(self.thickness);
|
|
self.hline(
|
|
img,
|
|
(self.width - vthick_px) / 2,
|
|
self.width,
|
|
(self.height - hthick_px) / 2,
|
|
hthick_px,
|
|
);
|
|
}
|
|
|
|
fn vline(
|
|
self: BoxFont,
|
|
img: *pixman.Image,
|
|
y1: u32,
|
|
y2: u32,
|
|
x: u32,
|
|
thickness_px: u32,
|
|
) void {
|
|
const boxes = &[_]pixman.Box32{
|
|
.{
|
|
.x1 = @intCast(i32, @min(@max(x, 0), self.width)),
|
|
.x2 = @intCast(i32, @min(@max(x + thickness_px, 0), self.width)),
|
|
.y1 = @intCast(i32, @min(@max(y1, 0), self.height)),
|
|
.y2 = @intCast(i32, @min(@max(y2, 0), self.height)),
|
|
},
|
|
};
|
|
|
|
img.fillBoxes(.src, white, boxes) catch {};
|
|
}
|
|
|
|
fn hline(
|
|
self: BoxFont,
|
|
img: *pixman.Image,
|
|
x1: u32,
|
|
x2: u32,
|
|
y: u32,
|
|
thickness_px: u32,
|
|
) void {
|
|
const boxes = &[_]pixman.Box32{
|
|
.{
|
|
.x1 = @intCast(i32, @min(@max(x1, 0), self.width)),
|
|
.x2 = @intCast(i32, @min(@max(x2, 0), self.width)),
|
|
.y1 = @intCast(i32, @min(@max(y, 0), self.height)),
|
|
.y2 = @intCast(i32, @min(@max(y + thickness_px, 0), self.height)),
|
|
},
|
|
};
|
|
|
|
img.fillBoxes(.src, white, boxes) catch {};
|
|
}
|
|
|
|
test "all" {
|
|
const testing = std.testing;
|
|
const alloc = testing.allocator;
|
|
|
|
var atlas_greyscale = try Atlas.init(alloc, 512, .greyscale);
|
|
defer atlas_greyscale.deinit(alloc);
|
|
|
|
const face: BoxFont = .{ .width = 18, .height = 36, .thickness = 2 };
|
|
const glyph = try face.renderGlyph(
|
|
alloc,
|
|
&atlas_greyscale,
|
|
0x2500,
|
|
);
|
|
try testing.expectEqual(@as(u32, face.width), glyph.width);
|
|
try testing.expectEqual(@as(u32, face.height), glyph.height);
|
|
}
|