core: get x11 to build
This commit is contained in:
Joshua Holmes
Stephen Gutekanst
parent
ac8c2f8f33
commit
a791089967
2 changed files with 433 additions and 16 deletions
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@ -2,24 +2,439 @@ const Linux = @import("../Linux.zig");
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const Core = @import("../../Core.zig");
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const InitOptions = Core.InitOptions;
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const builtin = @import("builtin");
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const std = @import("std");
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const c = @cImport({
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@cInclude("X11/Xlib.h");
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@cInclude("X11/Xatom.h");
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@cInclude("X11/cursorfont.h");
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@cInclude("X11/Xcursor/Xcursor.h");
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@cInclude("X11/extensions/Xrandr.h");
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});
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const mach = @import("../../main.zig");
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const gpu = mach.gpu;
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const Event = Core.Event;
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const KeyEvent = Core.KeyEvent;
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const MouseButtonEvent = Core.MouseButtonEvent;
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const MouseButton = Core.MouseButton;
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const Size = Core.Size;
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const DisplayMode = Core.DisplayMode;
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const CursorShape = Core.CursorShape;
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const VSyncMode = Core.VSyncMode;
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const CursorMode = Core.CursorMode;
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const Key = Core.Key;
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const KeyMods = Core.KeyMods;
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const Joystick = Core.Joystick;
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const Position = Core.Position;
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const log = std.log.scoped(.mach);
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pub const defaultLog = std.log.defaultLog;
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pub const defaultPanic = std.debug.panicImpl;
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pub const X11 = @This();
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allocator: std.mem.Allocator,
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core: *Core,
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libx11: LibX11,
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libxrr: ?LibXRR,
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libgl: ?LibGL,
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libxcursor: ?LibXCursor,
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gl_ctx: ?*LibGL.Context,
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display: *c.Display,
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width: c_int,
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height: c_int,
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empty_event_pipe: [2]std.c.fd_t,
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wm_protocols: c.Atom,
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wm_delete_window: c.Atom,
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net_wm_ping: c.Atom,
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net_wm_state_fullscreen: c.Atom,
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net_wm_state: c.Atom,
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net_wm_state_above: c.Atom,
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net_wm_bypass_compositor: c.Atom,
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motif_wm_hints: c.Atom,
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net_wm_window_type: c.Atom,
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net_wm_window_type_dock: c.Atom,
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root_window: c.Window,
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window: c.Window,
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backend_type: gpu.BackendType,
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refresh_rate: u32,
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hidden_cursor: c.Cursor,
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// Mutable fields only used by main thread
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cursors: [@typeInfo(CursorShape).Enum.fields.len]?c.Cursor,
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// Input state; written from main thread; read from any
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input_mu: std.Thread.RwLock = .{},
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// Mutable state fields; read/write by any thread
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title: [:0]const u8,
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display_mode: DisplayMode = .windowed,
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vsync_mode: VSyncMode = .triple,
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border: bool,
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headless: bool,
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size: Size,
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cursor_mode: CursorMode = .normal,
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cursor_shape: CursorShape = .arrow,
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surface_descriptor: *gpu.Surface.DescriptorFromXlibWindow,
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pub fn init(
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linux: *Linux,
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core: *Core.Mod,
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options: InitOptions,
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) !X11 {
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_ = linux;
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_ = core;
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_ = options;
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// TODO(core): return errors.NotSupported if not supported
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return .{};
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const libx11 = try LibX11.load();
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const libgl: ?LibGL = LibGL.load() catch |err| switch (err) {
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error.LibraryNotFound => null,
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else => return err,
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};
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const libxcursor: ?LibXCursor = LibXCursor.load() catch |err| switch (err) {
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error.LibraryNotFound => null,
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else => return err,
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};
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const libxrr: ?LibXRR = LibXRR.load() catch |err| switch (err) {
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error.LibraryNotFound => null,
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else => return err,
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};
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const display = libx11.XOpenDisplay(null) orelse {
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std.log.err("X11: Cannot open display", .{});
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return error.CannotOpenDisplay;
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};
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const screen = c.DefaultScreen(display);
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const visual = c.DefaultVisual(display, screen);
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const root_window = c.RootWindow(display, screen);
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const colormap = libx11.XCreateColormap(display, root_window, visual, c.AllocNone);
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var set_window_attrs = c.XSetWindowAttributes{
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.colormap = colormap,
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// TODO: reduce
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.event_mask = c.StructureNotifyMask | c.KeyPressMask | c.KeyReleaseMask |
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c.PointerMotionMask | c.ButtonPressMask | c.ButtonReleaseMask |
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c.ExposureMask | c.FocusChangeMask | c.VisibilityChangeMask |
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c.EnterWindowMask | c.LeaveWindowMask | c.PropertyChangeMask,
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};
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const window = libx11.XCreateWindow(
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display,
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root_window,
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@divFloor(libx11.XDisplayWidth(display, screen), 2), // TODO: add window width?
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@divFloor(libx11.XDisplayHeight(display, screen), 2), // TODO: add window height?
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options.size.width,
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options.size.height,
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0,
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c.DefaultDepth(display, screen),
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c.InputOutput,
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visual,
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c.CWColormap | c.CWEventMask,
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&set_window_attrs,
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);
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var window_attrs: c.XWindowAttributes = undefined;
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_ = libx11.XGetWindowAttributes(display, window, &window_attrs);
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const window_size = Size{
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.width = @intCast(window_attrs.width),
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.height = @intCast(window_attrs.height),
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};
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const blank_pixmap = libx11.XCreatePixmap(display, window, 1, 1, 1);
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var color = c.XColor{};
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const refresh_rate: u16 = blk: {
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if (libxrr != null) {
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const conf = libxrr.?.XRRGetScreenInfo(display, root_window);
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break :blk @intCast(libxrr.?.XRRConfigCurrentRate(conf));
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}
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break :blk 60;
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};
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const surface_descriptor = try options.allocator.create(gpu.Surface.DescriptorFromXlibWindow);
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surface_descriptor.* = .{
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.display = display,
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.window = @intCast(window),
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};
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var x11 = X11{
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.core = @fieldParentPtr("platform", linux),
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.allocator = options.allocator,
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.display = display,
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.libx11 = libx11,
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.libgl = libgl,
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.libxcursor = libxcursor,
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.libxrr = libxrr,
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.empty_event_pipe = try std.posix.pipe(),
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.gl_ctx = null,
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.width = window_attrs.width,
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.height = window_attrs.height,
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.wm_protocols = libx11.XInternAtom(display, "WM_PROTOCOLS", c.False),
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.wm_delete_window = libx11.XInternAtom(display, "WM_DELETE_WINDOW", c.False),
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.net_wm_ping = libx11.XInternAtom(display, "NET_WM_PING", c.False),
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.net_wm_state_fullscreen = libx11.XInternAtom(display, "_NET_WM_STATE_FULLSCREEN", c.False),
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.net_wm_state = libx11.XInternAtom(display, "_NET_WM_STATE", c.False),
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.net_wm_state_above = libx11.XInternAtom(display, "_NET_WM_STATE_ABOVE", c.False),
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.net_wm_window_type = libx11.XInternAtom(display, "_NET_WM_WINDOW_TYPE", c.False),
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.net_wm_window_type_dock = libx11.XInternAtom(display, "_NET_WM_WINDOW_TYPE_DOCK", c.False),
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.net_wm_bypass_compositor = libx11.XInternAtom(display, "_NET_WM_BYPASS_COMPOSITOR", c.False),
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.motif_wm_hints = libx11.XInternAtom(display, "_MOTIF_WM_HINTS", c.False),
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.root_window = root_window,
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.window = window,
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.hidden_cursor = libx11.XCreatePixmapCursor(display, blank_pixmap, blank_pixmap, &color, &color, 0, 0),
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.backend_type = try Core.detectBackendType(options.allocator),
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.refresh_rate = refresh_rate,
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.title = options.title,
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.display_mode = .windowed,
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.border = options.border,
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.headless = options.headless,
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.size = window_size,
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.cursors = std.mem.zeroes([@typeInfo(CursorShape).Enum.fields.len]?c.Cursor),
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.surface_descriptor = surface_descriptor,
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};
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_ = libx11.XSetErrorHandler(errorHandler);
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_ = libx11.XInitThreads();
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_ = libx11.XrmInitialize();
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defer _ = libx11.XFreeColormap(display, colormap);
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for (0..2) |i| {
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const sf = try std.posix.fcntl(x11.empty_event_pipe[i], std.posix.F.GETFL, 0);
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const df = try std.posix.fcntl(x11.empty_event_pipe[i], std.posix.F.GETFD, 0);
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_ = try std.posix.fcntl(x11.empty_event_pipe[i], std.posix.F.SETFL, sf | @as(u32, @bitCast(std.posix.O{ .NONBLOCK = true })));
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_ = try std.posix.fcntl(x11.empty_event_pipe[i], std.posix.F.SETFD, df | std.posix.FD_CLOEXEC);
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}
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var protocols = [_]c.Atom{ x11.wm_delete_window, x11.net_wm_ping };
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_ = libx11.XSetWMProtocols(x11.display, x11.window, &protocols, protocols.len);
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_ = libx11.XStoreName(x11.display, x11.window, options.title.ptr);
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_ = libx11.XSelectInput(x11.display, x11.window, set_window_attrs.event_mask);
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_ = libx11.XMapWindow(x11.display, x11.window);
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_ = libx11.XGetWindowAttributes(x11.display, x11.window, &window_attrs);
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const backend_type = try Core.detectBackendType(options.allocator);
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switch (backend_type) {
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.opengl, .opengles => {
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if (libgl != null) {
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// zig fmt: off
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const attrs = &[_]c_int{
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LibGL.rgba,
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LibGL.doublebuffer,
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LibGL.depth_size, 24,
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LibGL.stencil_size, 8,
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LibGL.red_size, 8,
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LibGL.green_size, 8,
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LibGL.blue_size, 8,
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LibGL.sample_buffers, 0,
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LibGL.samples, 0,
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c.None,
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};
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// zig fmt: on
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const visual_info = libgl.?.glXChooseVisual(x11.display, screen, attrs.ptr);
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defer _ = libx11.XFree(visual_info);
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x11.gl_ctx = libgl.?.glXCreateContext(x11.display, visual_info, null, true);
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_ = libgl.?.glXMakeCurrent(x11.display, x11.window, x11.gl_ctx);
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} else {
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return error.LibGLNotFound;
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}
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},
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else => {},
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}
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// Create hidden cursor
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const gc = libx11.XCreateGC(x11.display, blank_pixmap, 0, null);
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if (gc != null) {
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_ = libx11.XDrawPoint(x11.display, blank_pixmap, gc, 0, 0);
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_ = libx11.XFreeGC(x11.display, gc);
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}
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// TODO: remove allocation
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x11.cursors[@intFromEnum(CursorShape.arrow)] = try x11.createStandardCursor(.arrow);
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return x11;
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}
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pub fn deinit(
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w: *X11,
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x11: *X11,
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linux: *Linux,
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) void {
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_ = w;
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_ = linux;
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x11.allocator.destroy(x11.surface_descriptor);
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linux.allocator.destroy(x11.surface_descriptor);
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for (x11.cursors) |cur| {
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if (cur) |_| {
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// _ = x11.libx11.XFreeCursor(x11.display, cur.?);
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}
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}
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if (x11.libxcursor) |*libxcursor| {
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libxcursor.handle.close();
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}
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if (x11.libxrr) |*libxrr| {
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libxrr.handle.close();
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}
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if (x11.libgl) |*libgl| {
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if (x11.gl_ctx) |gl_ctx| {
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libgl.glXDestroyContext(x11.display, gl_ctx);
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}
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libgl.handle.close();
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}
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_ = x11.libx11.XUnmapWindow(x11.display, x11.window);
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_ = x11.libx11.XDestroyWindow(x11.display, x11.window);
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_ = x11.libx11.XCloseDisplay(x11.display);
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x11.libx11.handle.close();
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std.posix.close(x11.empty_event_pipe[0]);
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std.posix.close(x11.empty_event_pipe[1]);
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}
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const LibX11 = struct {
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handle: std.DynLib,
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XInitThreads: *const @TypeOf(c.XInitThreads),
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XrmInitialize: *const @TypeOf(c.XrmInitialize),
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XOpenDisplay: *const @TypeOf(c.XOpenDisplay),
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XCloseDisplay: *const @TypeOf(c.XCloseDisplay),
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XCreateWindow: *const @TypeOf(c.XCreateWindow),
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XSelectInput: *const @TypeOf(c.XSelectInput),
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XMapWindow: *const @TypeOf(c.XMapWindow),
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XNextEvent: *const @TypeOf(c.XNextEvent),
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XDisplayWidth: *const @TypeOf(c.XDisplayWidth),
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XDisplayHeight: *const @TypeOf(c.XDisplayHeight),
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XCreateColormap: *const @TypeOf(c.XCreateColormap),
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XSetErrorHandler: *const @TypeOf(c.XSetErrorHandler),
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XGetWindowAttributes: *const @TypeOf(c.XGetWindowAttributes),
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XStoreName: *const @TypeOf(c.XStoreName),
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XFreeColormap: *const @TypeOf(c.XFreeColormap),
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XUnmapWindow: *const @TypeOf(c.XUnmapWindow),
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XDestroyWindow: *const @TypeOf(c.XDestroyWindow),
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XFlush: *const @TypeOf(c.XFlush),
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XLookupString: *const @TypeOf(c.XLookupString),
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XQueryPointer: *const @TypeOf(c.XQueryPointer),
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XInternAtom: *const @TypeOf(c.XInternAtom),
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XSendEvent: *const @TypeOf(c.XSendEvent),
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XSetWMProtocols: *const @TypeOf(c.XSetWMProtocols),
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XDefineCursor: *const @TypeOf(c.XDefineCursor),
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XUndefineCursor: *const @TypeOf(c.XUndefineCursor),
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XCreatePixmap: *const @TypeOf(c.XCreatePixmap),
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XCreateGC: *const @TypeOf(c.XCreateGC),
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XDrawPoint: *const @TypeOf(c.XDrawPoint),
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XFreeGC: *const @TypeOf(c.XFreeGC),
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XCreatePixmapCursor: *const @TypeOf(c.XCreatePixmapCursor),
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XGrabPointer: *const @TypeOf(c.XGrabPointer),
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XUngrabPointer: *const @TypeOf(c.XUngrabPointer),
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XCreateFontCursor: *const @TypeOf(c.XCreateFontCursor),
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XFreeCursor: *const @TypeOf(c.XFreeCursor),
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XChangeProperty: *const @TypeOf(c.XChangeProperty),
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XResizeWindow: *const @TypeOf(c.XResizeWindow),
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XConfigureWindow: *const @TypeOf(c.XConfigureWindow),
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XSetWMHints: *const @TypeOf(c.XSetWMHints),
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XDeleteProperty: *const @TypeOf(c.XDeleteProperty),
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XAllocSizeHints: *const @TypeOf(c.XAllocSizeHints),
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XSetWMNormalHints: *const @TypeOf(c.XSetWMNormalHints),
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XFree: *const @TypeOf(c.XFree),
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pub fn load() !LibX11 {
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var lib: LibX11 = undefined;
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lib.handle = std.DynLib.open("libX11.so.6") catch return error.LibraryNotFound;
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inline for (@typeInfo(LibX11).Struct.fields[1..]) |field| {
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const name = std.fmt.comptimePrint("{s}\x00", .{field.name});
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const name_z: [:0]const u8 = @ptrCast(name[0 .. name.len - 1]);
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@field(lib, field.name) = lib.handle.lookup(field.type, name_z) orelse return error.SymbolLookup;
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}
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return lib;
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}
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};
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const LibXCursor = struct {
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handle: std.DynLib,
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XcursorImageCreate: *const @TypeOf(c.XcursorImageCreate),
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XcursorImageDestroy: *const @TypeOf(c.XcursorImageDestroy),
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XcursorImageLoadCursor: *const @TypeOf(c.XcursorImageLoadCursor),
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XcursorGetTheme: *const @TypeOf(c.XcursorGetTheme),
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XcursorGetDefaultSize: *const @TypeOf(c.XcursorGetDefaultSize),
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XcursorLibraryLoadImage: *const @TypeOf(c.XcursorLibraryLoadImage),
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pub fn load() !LibXCursor {
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var lib: LibXCursor = undefined;
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lib.handle = std.DynLib.open("libXcursor.so.1") catch return error.LibraryNotFound;
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inline for (@typeInfo(LibXCursor).Struct.fields[1..]) |field| {
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const name = std.fmt.comptimePrint("{s}\x00", .{field.name});
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const name_z: [:0]const u8 = @ptrCast(name[0 .. name.len - 1]);
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@field(lib, field.name) = lib.handle.lookup(field.type, name_z) orelse return error.SymbolLookup;
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}
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return lib;
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}
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};
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const LibXRR = struct {
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handle: std.DynLib,
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XRRGetScreenInfo: *const @TypeOf(c.XRRGetScreenInfo),
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XRRConfigCurrentRate: *const @TypeOf(c.XRRConfigCurrentRate),
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pub fn load() !LibXRR {
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var lib: LibXRR = undefined;
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lib.handle = std.DynLib.open("libXrandr.so.1") catch return error.LibraryNotFound;
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inline for (@typeInfo(LibXRR).Struct.fields[1..]) |field| {
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const name = std.fmt.comptimePrint("{s}\x00", .{field.name});
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const name_z: [:0]const u8 = @ptrCast(name[0 .. name.len - 1]);
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@field(lib, field.name) = lib.handle.lookup(field.type, name_z) orelse return error.SymbolLookup;
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}
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return lib;
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}
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};
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const LibGL = struct {
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const Drawable = c.XID;
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const Context = opaque {};
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const FBConfig = opaque {};
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const rgba = 4;
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const doublebuffer = 5;
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const red_size = 8;
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const green_size = 9;
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const blue_size = 10;
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const depth_size = 12;
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const stencil_size = 13;
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const sample_buffers = 0x186a0;
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const samples = 0x186a1;
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handle: std.DynLib,
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glXCreateContext: *const fn (*c.Display, *c.XVisualInfo, ?*Context, bool) callconv(.C) ?*Context,
|
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glXDestroyContext: *const fn (*c.Display, ?*Context) callconv(.C) void,
|
||||
glXMakeCurrent: *const fn (*c.Display, Drawable, ?*Context) callconv(.C) bool,
|
||||
glXChooseVisual: *const fn (*c.Display, c_int, [*]const c_int) callconv(.C) *c.XVisualInfo,
|
||||
glXSwapBuffers: *const fn (*c.Display, Drawable) callconv(.C) bool,
|
||||
pub fn load() !LibGL {
|
||||
var lib: LibGL = undefined;
|
||||
lib.handle = std.DynLib.open("libGL.so.1") catch return error.LibraryNotFound;
|
||||
inline for (@typeInfo(LibGL).Struct.fields[1..]) |field| {
|
||||
const name = std.fmt.comptimePrint("{s}\x00", .{field.name});
|
||||
const name_z: [:0]const u8 = @ptrCast(name[0 .. name.len - 1]);
|
||||
@field(lib, field.name) = lib.handle.lookup(field.type, name_z) orelse return error.SymbolLookup;
|
||||
}
|
||||
return lib;
|
||||
}
|
||||
};
|
||||
|
||||
fn errorHandler(display: ?*c.Display, event: [*c]c.XErrorEvent) callconv(.C) c_int {
|
||||
_ = display;
|
||||
log.err("X11: error code {d}\n", .{event.*.error_code});
|
||||
return 0;
|
||||
}
|
||||
|
||||
fn createStandardCursor(x11: *X11, shape: CursorShape) !c.Cursor {
|
||||
if (x11.libxcursor) |libxcursor| {
|
||||
const theme = libxcursor.XcursorGetTheme(x11.display);
|
||||
if (theme != null) {
|
||||
const name = switch (shape) {
|
||||
.arrow => "default",
|
||||
.ibeam => "text",
|
||||
.crosshair => "crosshair",
|
||||
.pointing_hand => "pointer",
|
||||
.resize_ew => "ew-resize",
|
||||
.resize_ns => "ns-resize",
|
||||
.resize_nwse => "nwse-resize",
|
||||
.resize_nesw => "nesw-resize",
|
||||
.resize_all => "all-scroll",
|
||||
.not_allowed => "not-allowed",
|
||||
};
|
||||
const cursor_size = libxcursor.XcursorGetDefaultSize(x11.display);
|
||||
const image = libxcursor.XcursorLibraryLoadImage(name, theme, cursor_size);
|
||||
defer libxcursor.XcursorImageDestroy(image);
|
||||
if (image != null) {
|
||||
return libxcursor.XcursorImageLoadCursor(x11.display, image);
|
||||
}
|
||||
}
|
||||
}
|
||||
const xc: c_uint = switch (shape) {
|
||||
.arrow => c.XC_left_ptr,
|
||||
.ibeam => c.XC_xterm,
|
||||
.crosshair => c.XC_crosshair,
|
||||
.pointing_hand => c.XC_hand2,
|
||||
.resize_ew => c.XC_sb_h_double_arrow,
|
||||
.resize_ns => c.XC_sb_v_double_arrow,
|
||||
.resize_nwse => c.XC_sb_h_double_arrow,
|
||||
.resize_nesw => c.XC_sb_h_double_arrow,
|
||||
.resize_all => c.XC_fleur,
|
||||
.not_allowed => c.XC_X_cursor,
|
||||
};
|
||||
const cursor = x11.libx11.XCreateFontCursor(x11.display, xc);
|
||||
if (cursor == 0) return error.FailedToCreateCursor;
|
||||
return cursor;
|
||||
}
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue