ref: 17366380199a38840167696cb8473287f9678408
author: Jacob G-W <jacoblevgw@gmail.com>
date: Sun Jul 16 13:13:26 EDT 2023
add files
--- /dev/null
+++ b/.gitignore
@@ -1,0 +1,1 @@
+test
--- /dev/null
+++ b/fbuild.sh
@@ -1,0 +1,2 @@
+#!/usr/bin/env bash
+ ~/dev/zig/build/debug/bin/zig build-exe test.zig -target x86_64-plan9-none -fsingle-threaded --zig-lib-dir ~/dev/zig/lib $@
--- /dev/null
+++ b/test.zig
@@ -1,0 +1,648 @@
+const std = @import("std");+var display: *Display = undefined;
+var _screen: ?*Screen = undefined;
+var screen: ?*Image = undefined;
+pub fn main() !void {+ const ally = std.heap.page_allocator;
+ try initDraw(ally, null, "bruh");
+ std.debug.print("errstr: {s}\n", .{std.os.plan9.errstr()});+}
+
+pub fn parseIntSkipPreceedingSpaces(comptime T: type, buf: []const u8) !T {+ var i: u32 = 0;
+ while (buf[i] == ' ') i += 1;
+ const int = try std.fmt.parseInt(T, buf[i..], 10);
+ return int;
+}
+
+pub const Image = struct {+ display: *Display, // display holding data
+ id: u32, // id of system-held Image
+ r: Rectangle, // rectangle in data area, local coords
+ clipr: Rectangle, // clipping region
+ depth: u32, // number of bits per pixel
+ chan: Chan,
+ repl: bool, // flag: data replicates to tile clipr
+ screen: ?*Screen, // 0 if not a window
+ next: ?*Image, // next in list of windows
+ fn allocScreen(image: *Image, fill: *Image, public: bool) !*Screen {+ const d = image.display;
+ if (d != fill.display)
+ return error.ImageAndFillOnDifferentDisplays;
+ var s = try d.ally.create(Screen);
+ errdefer d.ally.destroy(s);
+ if (screenid == 0) {+ screenid = std.os.plan9.getpid();
+ }
+ var id: u32 = 0;
+ var trys: usize = 0;
+ while (trys < 25) : (trys += 1) {+ var bs = try d.bufImage(1 + 4 + 4 + 4 + 1);
+ var a = bs.writer();
+ screenid += 1;
+ id = screenid & 0xffff; // old devdraw bug
+ a.writeByte('A') catch unreachable;+ a.writeIntLittle(u32, id) catch unreachable;
+ a.writeIntLittle(u32, image.id) catch unreachable;
+ a.writeIntLittle(u32, fill.id) catch unreachable;
+ a.writeByte(@intFromBool(public)) catch unreachable;
+ try d.flushImage(false);
+ }
+ s.display = d;
+ s.id = id;
+ s.image = image;
+ s.fill = fill;
+ return s;
+ }
+};
+var screenid: u32 = 0;
+pub const Rectangle = struct {+ min: Point,
+ max: Point,
+ pub fn init(min_x: i32, min_y: i32, max_x: i32, max_y: i32) Rectangle {+ return .{+ .min = .{+ .x = min_x,
+ .y = min_y,
+ },
+ .max = .{+ .x = max_x,
+ .y = max_y,
+ },
+ };
+ }
+ pub fn isBad(self: Rectangle) bool {+ const x = self.dX();
+ const y = self.dY();
+ if (x > 0 and y > 0) {+ const z = x * y;
+ if (@divFloor(z, x) == y and z < 0x10000000) return false;
+ }
+ return true;
+ }
+ pub fn dX(self: Rectangle) i64 {+ return self.max.x - self.min.x;
+ }
+ pub fn dY(self: Rectangle) i64 {+ return self.max.y - self.min.y;
+ }
+ pub fn inset(self: Rectangle, n: i32) Rectangle {+ var r = self;
+ r.min.x += n;
+ r.min.y += n;
+ r.max.x -= n;
+ r.max.y -= n;
+ return r;
+ }
+};
+pub const Screen = struct {+ display: *Display, // display holding data
+ id: u32, // id of system-held Screen
+ image: *Image, // unused; for reference only
+ fill: *Image, // color to paint behind windows
+};
+pub const Point = struct { x: i32, y: i32 };+pub const Display = struct {+ ally: std.mem.Allocator,
+ qlock: void, // some sort of mutex???
+ locking: bool, // program is using lockdisplay
+ dirno: u32, // the window id
+ fd: std.fs.File,
+ reffd: std.fs.File,
+ ctlfd: std.fs.File,
+ imageid: u32 = 0,
+ local: u32,
+ @"error": void, // void (*error)(Display*, char*);
+ devdir: []const u8 = "/dev",
+ windir: []const u8 = "/dev",
+ oldlabel: [64]u8,
+ dataqid: u64,
+ white: *Image,
+ black: *Image,
+ @"opaque": *Image,
+ transparent: *Image,
+ image: ?*Image,
+ buf: []u8,
+ bufsize: u32,
+ bufp: [*]u8,
+ defaultfont: void, // TODO deal with this
+ subfont: void, // TODO deal with this
+ windows: ?*Image,
+ screenimage: ?*Image,
+ _isnewdisplay: bool,
+ pub fn init(ally: std.mem.Allocator, options: struct { devdir: []const u8 = "/dev", windir: []const u8 = "/dev" }) !*Display {+ const NINFO = 12 * 12;
+ var info: [NINFO + 1]u8 = undefined;
+ var buf: [512]u8 = undefined;
+ var image: ?*Image = null;
+ const ctlfd = try std.fs.openFileAbsolute(try std.fmt.bufPrint(&buf, "{s}/draw/new", .{options.devdir}), .{ .mode = .read_write });+ errdefer ctlfd.close();
+ var n = try ctlfd.read(&info);
+ if (n < 12) {+ return error.InvalidReadFromDrawCtl;
+ }
+ if (n == NINFO + 1) n = NINFO;
+ info[n] = 0;
+ const infoslice = info[0..n];
+ var isnew: bool = false;
+ if (n < NINFO) isnew = true;
+ const winnum = try parseIntSkipPreceedingSpaces(u32, infoslice[0 .. 1 * 12 - 1]);
+ const datafd = try std.fs.openFileAbsolute(try std.fmt.bufPrint(&buf, "{s}/draw/{d}/data", .{ options.devdir, winnum }), .{ .mode = .read_write });+ errdefer datafd.close();
+ const reffd = try std.fs.openFileAbsolute(try std.fmt.bufPrint(&buf, "{s}/draw/{d}/refresh", .{ options.devdir, winnum }), .{});+ errdefer reffd.close();
+ const disp = try ally.create(Display);
+ disp.ally = ally;
+ if (n >= NINFO) {+ image = try ally.create(Image);
+ errdefer ally.destroy(image.?);
+
+ const chan = Chan.fromString(infoslice[2 * 12 .. 3 * 12 - 1]);
+ image.?.* = .{+ .display = disp,
+ .id = 0,
+ .chan = chan,
+ .depth = chan.getDepth(),
+ .repl = try parseIntSkipPreceedingSpaces(u32, infoslice[3 * 12 .. 4 * 12 - 1]) != 0,
+ .r = .{+ .min = .{+ .x = try parseIntSkipPreceedingSpaces(i32, infoslice[4 * 12 .. 5 * 12 - 1]),
+ .y = try parseIntSkipPreceedingSpaces(i32, infoslice[5 * 12 .. 6 * 12 - 1]),
+ },
+ .max = .{+ .x = try parseIntSkipPreceedingSpaces(i32, infoslice[6 * 12 .. 7 * 12 - 1]),
+ .y = try parseIntSkipPreceedingSpaces(i32, infoslice[7 * 12 .. 8 * 12 - 1]),
+ },
+ },
+ .clipr = .{+ .min = .{+ .x = try parseIntSkipPreceedingSpaces(i32, infoslice[8 * 12 .. 9 * 12 - 1]),
+ .y = try parseIntSkipPreceedingSpaces(i32, infoslice[9 * 12 .. 10 * 12 - 1]),
+ },
+ .max = .{+ .x = try parseIntSkipPreceedingSpaces(i32, infoslice[10 * 12 .. 11 * 12 - 1]),
+ .y = try parseIntSkipPreceedingSpaces(i32, infoslice[11 * 12 .. 12 * 12 - 1]),
+ },
+ },
+ .screen = null,
+ .next = null,
+ };
+ }
+ // TODO refactor this into a disp.* = .{ ... } expression+ const bufsize_iounit = iounit(datafd);
+ const bufsz = if (bufsize_iounit == 0) 8000 else if (disp.bufsize < 512) return error.IounitTooSmall else bufsize_iounit;
+ disp.* = .{+ .ally = ally,
+ .dirno = winnum,
+ .fd = datafd,
+ .reffd = reffd,
+ .ctlfd = ctlfd,
+ .imageid = 0,
+ .local = 0,
+ .devdir = options.devdir,
+ .windir = options.windir,
+ .oldlabel = .{0} ** 64,+ .dataqid = 0,
+ .white = undefined, // filled in later
+ .black = undefined, // filled in later
+ .@"opaque" = undefined, // filled in later
+ .transparent = undefined, // filled in later
+ .buf = undefined, // filled in later
+ .bufsize = bufsz,
+ .bufp = undefined, // filled in later
+ .windows = null,
+ .screenimage = null,
+ ._isnewdisplay = isnew,
+ .qlock = {}, // TODO make this an actual lock+ .locking = false,
+ .@"error" = {}, // TODO audit if we need this+ .image = image,
+ .defaultfont = {},+ .subfont = {},+ };
+ errdefer ally.free(disp.buf);
+ disp.white = try disp.allocImage(Rectangle.init(0, 0, 1, 1), Chan.GREY1, true, DColor.White);
+ disp.black = try disp.allocImage(Rectangle.init(0, 0, 1, 1), Chan.GREY1, true, DColor.Black);
+ disp.buf = try ally.alloc(u8, bufsz + 5); // +5 for flush message;
+ disp.bufp = disp.buf.ptr;
+ // disp.error = error;
+ disp.windir = try ally.dupe(u8, options.windir);
+ errdefer ally.free(disp.windir);
+ disp.devdir = try ally.dupe(u8, options.devdir);
+ errdefer ally.free(disp.devdir);
+ // qlock(&disp.qlock)
+ disp.@"opaque" = disp.white;
+ disp.transparent = disp.black;
+ return disp;
+ }
+ pub fn allocImage(self: *Display, r: Rectangle, chan: Chan, repl: bool, col: u32) !*Image {+ return self._allocImage(null, r, chan, repl, col, 0, .backup);
+ }
+ fn _allocImage(self: *Display, ai: ?*Image, r: Rectangle, chan: Chan, repl: bool, col: u32, _screenid: u32, refresh: Refresh) !*Image {+ if (r.isBad()) {+ return error.BadRect;
+ }
+ if (@intFromEnum(chan) == 0) {+ return error.BadChanDesc;
+ }
+ const depth = chan.getDepth();
+ if (depth == 0) {+ return error.BadChanDesc;
+ }
+ var bs = try self.bufImage(1 + 4 + 4 + 1 + 4 + 1 + 4 * 4 + 4 * 4 + 4);
+ var a = bs.writer();
+ self.imageid += 1;
+ const id = self.imageid;
+ // start writing the protocol
+ // everything is little endian
+ a.writeByte('b') catch unreachable;+ a.writeIntLittle(u32, id) catch unreachable;
+ a.writeIntLittle(u32, _screenid) catch unreachable;
+ a.writeByte(@intFromEnum(refresh)) catch unreachable;
+ a.writeIntLittle(u32, @intFromEnum(chan)) catch unreachable;
+ a.writeByte(@intFromBool(repl)) catch unreachable;
+ a.writeIntLittle(i32, r.min.x) catch unreachable;
+ a.writeIntLittle(i32, r.min.y) catch unreachable;
+ a.writeIntLittle(i32, r.max.x) catch unreachable;
+ a.writeIntLittle(i32, r.max.y) catch unreachable;
+ const clipr = if (!repl)
+ Rectangle.init(-0x3FFFFFFF, -0x3FFFFFFF, 0x3FFFFFFF, 0x3FFFFFFF)
+ else
+ r;
+ a.writeIntLittle(i32, clipr.min.x) catch unreachable;
+ a.writeIntLittle(i32, clipr.min.y) catch unreachable;
+ a.writeIntLittle(i32, clipr.max.x) catch unreachable;
+ a.writeIntLittle(i32, clipr.max.y) catch unreachable;
+ a.writeIntLittle(u32, col) catch unreachable;
+ var i: *Image = undefined;
+ if (ai) |image| {+ i = image;
+ } else {+ i = self.ally.create(Image) catch {+ try self.freeRemote(id, .image);
+ return error.OutOfMemory;
+ };
+ errdefer self.ally.destroy(i);
+ }
+ i.* = .{ .display = self, .id = id, .depth = depth, .chan = chan, .r = r, .clipr = clipr, .repl = repl, .screen = null, .next = null };+ return i;
+ }
+ pub fn namedImage(self: *Display, name: []const u8) !*Image {+ if (name.len > 256) {+ return error.ImageNameTooLong;
+ }
+ self.flushImage(false) catch {};+ var bs = try self.bufImage(1 + 4 + 1 + name.len);
+ var a = bs.writer();
+ self.imageid += 1;
+ const id = self.imageid;
+ a.writeByte('n') catch unreachable;+ a.writeIntLittle(u32, id) catch unreachable;
+ a.writeByte(@intCast(name.len)) catch unreachable;
+ a.writeAll(name) catch unreachable;
+ try self.flushImage(false);
+ var buf: [12 * 12 + 1]u8 = undefined;
+ if (try self.ctlfd.pread(&buf, 0) < 12 * 12) {+ return error.CtlReadTooShort;
+ }
+ buf[12 * 12] = 0;
+ var i = self.ally.create(Image) catch {+ try self.freeRemote(id, .image);
+ try self.flushImage(false);
+ return error.OutOfMemory;
+ };
+ errdefer self.ally.destroy(i);
+ const chan = Chan.fromString(buf[2 * 12 .. 3 * 12 - 1]);
+ i.* = .{+ .display = self,
+ .id = id,
+ .chan = chan,
+ .depth = chan.getDepth(),
+ .repl = try parseIntSkipPreceedingSpaces(u32, buf[3 * 12 .. 4 * 12 - 1]) != 0,
+ .r = .{+ .min = .{+ .x = try parseIntSkipPreceedingSpaces(i32, buf[4 * 12 .. 5 * 12 - 1]),
+ .y = try parseIntSkipPreceedingSpaces(i32, buf[5 * 12 .. 6 * 12 - 1]),
+ },
+ .max = .{+ .x = try parseIntSkipPreceedingSpaces(i32, buf[6 * 12 .. 7 * 12 - 1]),
+ .y = try parseIntSkipPreceedingSpaces(i32, buf[7 * 12 .. 8 * 12 - 1]),
+ },
+ },
+ .clipr = .{+ .min = .{+ .x = try parseIntSkipPreceedingSpaces(i32, buf[8 * 12 .. 9 * 12 - 1]),
+ .y = try parseIntSkipPreceedingSpaces(i32, buf[9 * 12 .. 10 * 12 - 1]),
+ },
+ .max = .{+ .x = try parseIntSkipPreceedingSpaces(i32, buf[10 * 12 .. 11 * 12 - 1]),
+ .y = try parseIntSkipPreceedingSpaces(i32, buf[11 * 12 .. 12 * 12 - 1]),
+ },
+ },
+ .screen = null,
+ .next = null,
+ };
+ return i;
+ }
+ fn _allocWindow(self: *Display, i: *Image, s: *Screen, r: Rectangle, ref: Refresh, col: u32) !*Image {+ var im = try self._allocImage(i, r, self.screenimage.?.chan, false, col, s.id, ref);
+ im.screen = s;
+ im.next = self.windows;
+ self.windows = im;
+ return im;
+ }
+ fn freeRemote(self: *Display, id: u32, t: enum { image, screen }) !void {+ var bs = try self.bufImage(1 + 4);
+ const a = bs.writer();
+ const c: u8 = if (t == .image) 'f' else 'F';
+ a.writeByte(c) catch unreachable;
+ a.writeIntLittle(u32, id) catch unreachable;
+ }
+ fn freeImage1(i: ?*Image) !void {+ if (i == null) {+ return;
+ }
+ const image = i.?;
+ const d = image.display;
+ if (image.screen != null) {+ var w: ?*Image = d.windows;
+ if (w.? == i) {+ d.windows = image.next;
+ } else {+ while (w != null) {+ if (w.?.next == i) {+ w.?.next = i.?.next;
+ break;
+ }
+ w = w.?.next;
+ }
+ }
+ }
+ try d.freeRemote(image.id, .image);
+ }
+ fn freeImage(i: ?*Image) !void {+ _ = i;
+ // try freeImage1(i);
+ // if (i != null) i.?.display.ally.destroy(i.?);
+ }
+ pub fn bufImage(self: *Display, n: usize) !std.io.FixedBufferStream([]u8) {+ if (n > self.bufsize) {+ return error.BadCountBufSize;
+ }
+ if (@intFromPtr(self.bufp + n) > @intFromPtr(self.buf.ptr + self.bufsize)) {+ try self.flush();
+ }
+ const p = self.bufp;
+ self.bufp += n;
+ return std.io.fixedBufferStream(p[0..n]);
+ }
+ pub fn flush(self: *Display) !void {+ const n: i64 = @intCast(@intFromPtr(self.bufp) - @intFromPtr(self.buf.ptr));
+ if (n <= 0) return error.UnableToFlushInvalidN;
+ std.debug.print("about to flush: {}\n{s}\n", .{ std.fmt.fmtSliceHexLower(self.buf[0..@intCast(n)]), self.buf[0..@intCast(n)] });+ if ((self.fd.write(self.buf[0..@intCast(n)]) catch return error.UnableToFlushWrite) != n) {+ self.bufp = self.buf.ptr; // might as well; chance of continuing
+ return error.UnableToFlushN;
+ }
+ self.bufp = self.buf.ptr;
+ }
+ pub fn flushImage(self: *Display, visible: bool) !void {+ if (visible) {+ self.bufp[0] = 'v';
+ self.bufp += 1;
+ if (self._isnewdisplay) {+ std.mem.writeIntLittle(u32, self.bufp[0..4], self.screenimage.?.id);
+ }
+ }
+ return self.flush();
+ }
+ pub fn genGetWindow(self: *Display, winname: []const u8, winp: *?*Image, scrp: *?*Screen, ref: Refresh) !void {+ var buf: [64 + 1]u8 = undefined;
+ var obuf: [64 + 1]u8 = undefined;
+ var image: ?*Image = null;
+ obuf[0] = 0;
+ while (true) {+ const fd = std.fs.openFileAbsolute(winname, .{}) catch {+ std.mem.copyForwards(u8, &buf, "noborder");
+ image = self.image;
+ break;
+ };
+ var n: ?usize = fd.read(buf[0..64]) catch null;
+ if (n == 0) n = null; // TODO do I need this?
+ if (n == null) {+ fd.close();
+ std.mem.copyForwards(u8, &buf, "noborder");
+ image = self.image;
+ break;
+ }
+ // we correctly read in to buf
+ fd.close();
+ image = self.namedImage(buf[0..n.?]) catch |err| {+ std.debug.print("namedImage: {}\n", .{err});+ if (!std.mem.eql(u8, buf[0..n.?], obuf[0..n.?])) {+ std.debug.print("trying to fix the race\n", .{});+ std.mem.copyForwards(u8, obuf[0..n.?], buf[0..n.?]);
+ continue;
+ }
+ break;
+ };
+ break;
+ }
+ if (winp.*) |i| {+ _ = i;
+ // try freeImage1(i);
+ // if (scrp.*.?.image != self.image)
+ // try freeImage(scrp.*.?.image);
+ // self.freeScreen(scrp.*.?);
+ scrp.* = null;
+ }
+ if (image == null) {+ winp.* = null;
+ self.screenimage = null;
+ return error.CouldNotGetImage; // TODO audit this error
+ }
+ self.screenimage = image.?;
+ scrp.* = image.?.allocScreen(self.white, false) catch |err| {+ winp.* = null;
+ self.screenimage = null;
+ if (image != self.image) {+ try freeImage(image);
+ }
+ return err;
+ };
+ const i = image.?;
+ var r = i.r;
+ if (!std.mem.eql(u8, buf[0..8], "noborder")) {+ r = r.inset(Borderwidth);
+ }
+ std.debug.print("about to call _allocWindow", .{});+ winp.* = self._allocWindow(winp.*.?, scrp.*.?, r, ref, DColor.White) catch |err| {+ std.debug.print("could not alloc window {}\n", .{err});+ // self.freeScreen(scrp.*.?);
+ scrp.* = null;
+ self.screenimage = null;
+ if (image != self.image)
+ try freeImage(image);
+ return err;
+ };
+ self.screenimage = winp.*;
+ }
+};
+fn iounit(file: std.fs.File) u32 {+ var buf: [128]u8 = undefined;
+ const f = std.fmt.bufPrint(&buf, "/fd/{d}ctl", .{file.handle}) catch unreachable;+ const cfd = std.fs.openFileAbsolute(f, .{}) catch return 0;+ defer cfd.close();
+ const i = cfd.read(&buf) catch 0;
+ if (i == 0)
+ return 0;
+ const str = buf[0..i];
+ var toks = std.mem.tokenizeSequence(u8, str, " ");
+ var j: usize = 0;
+ // skip the first 7
+ while (j < 7) : (j += 1) _ = toks.next() orelse return 0;
+ const iounit_str = toks.next() orelse return 0;
+ return std.fmt.parseInt(u32, iounit_str, 10) catch return 0;
+}
+pub const Chan = enum(u32) {+ pub const Color = struct {+ const Red = 0;
+ const Green = 1;
+ const Blue = 2;
+ const Grey = 3;
+ const Alpha = 4;
+ const Map = 5;
+ const Ignore = 6;
+ };
+ pub const NChan = 7;
+ GREY1 = chan1(Color.Grey, 1),
+ GREY2 = chan1(Color.Grey, 2),
+ GREY4 = chan1(Color.Grey, 4),
+ GREY8 = chan1(Color.Grey, 8),
+ CMAP8 = chan1(Color.Map, 8),
+ RGB15 = chan4(Color.Ignore, 1, Color.Red, 5, Color.Green, 5, Color.Blue, 5),
+ RGB16 = chan3(Color.Red, 5, Color.Green, 6, Color.Blue, 5),
+ RGB24 = chan3(Color.Red, 8, Color.Green, 8, Color.Blue, 8),
+ RGBA32 = chan4(Color.Red, 8, Color.Green, 8, Color.Blue, 8, Color.Alpha, 8),
+ ARGB32 = chan4(Color.Alpha, 8, Color.Red, 8, Color.Green, 8, Color.Blue, 8),
+ XRGB32 = chan4(Color.Ignore, 8, Color.Red, 8, Color.Green, 8, Color.Blue, 8),
+ BGR24 = chan3(Color.Blue, 8, Color.Green, 8, Color.Red, 8),
+ ABGR32 = chan4(Color.Alpha, 8, Color.Blue, 8, Color.Green, 8, Color.Red, 8),
+ XBGR32 = chan4(Color.Ignore, 8, Color.Blue, 8, Color.Green, 8, Color.Red, 8),
+ _,
+ const channames: []const u8 = "rgbkamx";
+ pub fn fromString(str: []const u8) Chan {+ // strip str
+ const spaces: []const u8 = &.{ ' ', '\t', '\r', '\n' };+ const pos = std.mem.indexOfNone(u8, str, spaces).?;
+ const s = str[pos..];
+
+ var depth: u32 = 0;
+ var chan: u32 = 0;
+ var i: usize = 0;
+ const chan_ = blk: {+ while (i < s.len) : (i += 2) {+ if (std.ascii.isWhitespace(s[i])) break;
+ if (std.mem.indexOfScalar(u8, channames, s[0])) |ty| {+ const n = std.fmt.parseInt(u8, s[i + 1 .. i + 2], 10) catch break :blk 0;
+ depth += n;
+ chan <<= 8;
+ chan |= dc(@intCast(ty), @intCast(n));
+ } else break :blk 0;
+ }
+ if (depth == 0 or (depth > 8 and depth % 8 != 0) or (depth < 8 and 8 % depth != 0)) break :blk 0;
+ break :blk chan;
+ };
+
+ return @enumFromInt(chan_);
+ }
+ pub fn getDepth(self: Chan) u32 {+ var depth: u32 = 0;
+ var c: u32 = @intFromEnum(self);
+ while (c != 0) : (c >>= 8) {+ depth += cdepth(c);
+ }
+ if (depth == 0 or (depth > 8 and depth % 8 != 0) or (depth < 8 and 8 % depth != 0)) return 0;
+ return depth;
+ }
+ fn dc(ty: u32, nbit: u32) u32 {+ return ((ty & 15) << 4) | (nbit & 15);
+ }
+ fn cdepth(c: u32) u32 {+ return c & 0xf;
+ }
+ pub fn chan1(a: u32, b: u32) u32 {+ return dc(a, b);
+ }
+ pub fn chan2(a: u32, b: u32, c: u32, d: u32) u32 {+ return chan1(a, b) << 8 | dc(c, d);
+ }
+ pub fn chan3(a: u32, b: u32, c: u32, d: u32, e: u32, f: u32) u32 {+ return chan2(a, b, c, d) << 8 | dc(e, f);
+ }
+ pub fn chan4(a: u32, b: u32, c: u32, d: u32, e: u32, f: u32, g: u32, h: u32) u32 {+ return chan3(a, b, c, d, e, f) << 8 | dc(g, h);
+ }
+};
+pub const DColor = struct {+ pub const Opaque = 0xFFFFFFFF;
+ pub const Transparent = 0x00000000; // only useful for allocimage, memfillcolor
+ pub const Black = 0x000000FF;
+ pub const White = 0xFFFFFFFF;
+ pub const Red = 0xFF0000FF;
+ pub const Green = 0x00FF00FF;
+ pub const Blue = 0x0000FFFF;
+ pub const Cyan = 0x00FFFFFF;
+ pub const Magenta = 0xFF00FFFF;
+ pub const Yellow = 0xFFFF00FF;
+ pub const Paleyellow = 0xFFFFAAFF;
+ pub const Darkyellow = 0xEEEE9EFF;
+ pub const Darkgreen = 0x448844FF;
+ pub const Palegreen = 0xAAFFAAFF;
+ pub const Medgreen = 0x88CC88FF;
+ pub const Darkblue = 0x000055FF;
+ pub const Palebluegreen = 0xAAFFFFFF;
+ pub const Paleblue = 0x0000BBFF;
+ pub const Bluegreen = 0x008888FF;
+ pub const Greygreen = 0x55AAAAFF;
+ pub const Palegreygreen = 0x9EEEEEFF;
+ pub const Yellowgreen = 0x99994CFF;
+ pub const Medblue = 0x000099FF;
+ pub const Greyblue = 0x005DBBFF;
+ pub const Palegreyblue = 0x4993DDFF;
+ pub const Purpleblue = 0x8888CCFF;
+
+ pub const Notacolor = 0xFFFFFF00;
+ pub const Nofill = Notacolor;
+};
+pub const Borderwidth = 4;
+/// Refresh methods
+pub const Refresh = enum(u8) {+ backup = 0,
+ none = 1,
+ mesg = 2,
+};
+pub fn initDraw(ally: std.mem.Allocator, fontname: ?[]const u8, label: ?[]const u8) !void { // TODO we are skipping the error function. I think this is okay since we do errors different in zig+ return genInitDraw(
+ ally,
+ "/dev",
+ fontname,
+ label,
+ "/dev",
+ .none,
+ );
+}
+pub fn genInitDraw(ally: std.mem.Allocator, devdir: []const u8, fontname: ?[]const u8, label: ?[]const u8, windir: []const u8, ref: Refresh) !void {+ var buf: [128]u8 = undefined;
+ display = try Display.init(ally, .{ .devdir = devdir, .windir = windir });+ // TODO deal with fonts
+ _ = fontname;
+ if (label) |l| blk: {+ const labelfds = std.fmt.bufPrint(&buf, "{s}/label", .{display.windir}) catch break :blk;+ const labelfd = std.fs.openFileAbsolute(labelfds, .{ .mode = .read_write }) catch break :blk;+ defer labelfd.close();
+ _ = try labelfd.write(l);
+ }
+ const winnamefds = std.fmt.bufPrint(&buf, "{s}/winname", .{display.windir}) catch unreachable;+ try display.genGetWindow(winnamefds, &screen, &_screen, ref);
+}