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core: match and emit function keys

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This commit is contained in:
Mitchell Hashimoto
2023-08-12 21:55:55 -07:00
parent 23f6f950b9
commit c0736676ce
2 changed files with 176 additions and 122 deletions
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288
src/Surface.zig
View File

@ -1074,15 +1074,20 @@ pub fn keyCallback(
} else |_| {}
}
if (action == .press or action == .repeat) {
// Mods for bindings never include caps/num lock.
const binding_mods = mods: {
var binding_mods = mods;
binding_mods.caps_lock = false;
binding_mods.num_lock = false;
break :mods binding_mods;
};
// We only handle press events
if (action != .press and action != .repeat) return false;
// Mods for bindings never include caps/num lock.
const binding_mods = mods: {
var binding_mods = mods;
binding_mods.caps_lock = false;
binding_mods.num_lock = false;
break :mods binding_mods;
};
// Check if we're processing a binding first. If so, that negates
// any further key processing.
{
const binding_action_: ?input.Binding.Action = action: {
var trigger: input.Binding.Trigger = .{
.mods = binding_mods,
@ -1104,123 +1109,162 @@ pub fn keyCallback(
try self.performBindingAction(binding_action);
return true;
}
}
// If we have alt pressed, we're going to prefix any of the
// translations below with ESC (0x1B).
const alt = binding_mods.alt;
const unalt_mods = unalt_mods: {
var unalt_mods = binding_mods;
unalt_mods.alt = false;
break :unalt_mods unalt_mods;
};
// We'll need to know these values here on.
self.renderer_state.mutex.lock();
const cursor_key_application = self.io.terminal.modes.cursor_keys;
self.renderer_state.mutex.unlock();
// Handle non-printables
const char: u8 = char: {
const mods_int: u8 = @bitCast(unalt_mods);
const ctrl_only: u8 = @bitCast(input.Mods{ .ctrl = true });
// If we're only pressing control, check if this is a character
// we convert to a non-printable. The best table I've found for
// this is:
// https://sw.kovidgoyal.net/kitty/keyboard-protocol/#legacy-ctrl-mapping-of-ascii-keys
//
// Note that depending on the apprt, these might be handled as
// composed characters. But not all app runtimes will do this;
// some only compose printable characters. So we manually handle
// this here.
if (mods_int == ctrl_only) {
const val: u8 = switch (key) {
.space => 0,
.slash => 0x1F,
.zero => 0x30,
.one => 0x31,
.two => 0x00,
.three => 0x1B,
.four => 0x1C,
.five => 0x1D,
.six => 0x1E,
.seven => 0x1F,
.eight => 0x7F,
.nine => 0x39,
.backslash => 0x1C,
.left_bracket => 0x1B,
.right_bracket => 0x1D,
.backspace => 0x08,
.a => 0x01,
.b => 0x02,
.c => 0x03,
.d => 0x04,
.e => 0x05,
.f => 0x06,
.g => 0x07,
.h => 0x08,
.i => 0x09,
.j => 0x0A,
.k => 0x0B,
.l => 0x0C,
.m => 0x0D,
.n => 0x0E,
.o => 0x0F,
.p => 0x10,
.q => 0x11,
.r => 0x12,
.s => 0x13,
.t => 0x14,
.u => 0x15,
.v => 0x16,
.w => 0x17,
.x => 0x18,
.y => 0x19,
.z => 0x1A,
else => 0,
};
if (val > 0) break :char val;
}
// Otherwise, we don't care what modifiers we press we do this.
break :char switch (key) {
.backspace => 0x7F,
.enter => '\r',
.tab => '\t',
.escape => 0x1B,
else => 0,
};
};
if (char > 0) {
// Ask our IO thread to write the data
var data: termio.Message.WriteReq.Small.Array = undefined;
// Write our data. If we need to alt-prefix we add that first.
var i: u8 = 0;
if (alt) {
data[i] = 0x1B;
i += 1;
}
data[i] = @intCast(char);
i += 1;
_ = self.io_thread.mailbox.push(.{
.write_small = .{
.data = data,
.len = i,
},
}, .{ .forever = {} });
// After sending all our messages we have to notify our IO thread
try self.io_thread.wakeup.notify();
// Control charactesr trigger a scroll
{
self.renderer_state.mutex.lock();
defer self.renderer_state.mutex.unlock();
self.scrollToBottom() catch |err| {
log.warn("error scrolling to bottom err={}", .{err});
};
}
return true;
// Check if we're processing a function key.
for (input.function_keys.keys.get(key)) |entry| {
switch (entry.cursor) {
.any => {},
.normal => if (cursor_key_application) continue,
.application => if (!cursor_key_application) continue,
}
switch (entry.keypad) {
.any => {},
else => {}, // TODO
}
switch (entry.modify_other_keys) {
.any => {},
// TODO
.set => {},
.set_other => continue,
}
const mods_int: u8 = @bitCast(binding_mods);
const entry_mods_int: u8 = @bitCast(entry.mods);
if (entry_mods_int == 0) {
if (mods_int != 0 and !entry.mods_empty_is_any) continue;
// mods are either empty, or empty means any so we allow it.
} else if (entry_mods_int != mods_int) {
// any set mods require an exact match
continue;
}
// log.debug("function key match: {}", .{entry});
// We found a match, send the sequence and return we as handled.
var data: termio.Message.WriteReq.Small.Array = undefined;
@memcpy(data[0..entry.sequence.len], entry.sequence);
_ = self.io_thread.mailbox.push(.{
.write_small = .{
.data = data,
.len = @intCast(entry.sequence.len),
},
}, .{ .forever = {} });
try self.io_thread.wakeup.notify();
return true;
}
// If we have alt pressed, we're going to prefix any of the
// translations below with ESC (0x1B).
const alt = binding_mods.alt;
const unalt_mods = unalt_mods: {
var unalt_mods = binding_mods;
unalt_mods.alt = false;
break :unalt_mods unalt_mods;
};
// Handle non-printables
const char: u8 = char: {
const mods_int: u8 = @bitCast(unalt_mods);
const ctrl_only: u8 = @bitCast(input.Mods{ .ctrl = true });
// If we're only pressing control, check if this is a character
// we convert to a non-printable. The best table I've found for
// this is:
// https://sw.kovidgoyal.net/kitty/keyboard-protocol/#legacy-ctrl-mapping-of-ascii-keys
//
// Note that depending on the apprt, these might be handled as
// composed characters. But not all app runtimes will do this;
// some only compose printable characters. So we manually handle
// this here.
if (mods_int != ctrl_only) break :char 0;
break :char switch (key) {
.space => 0,
.slash => 0x1F,
.zero => 0x30,
.one => 0x31,
.two => 0x00,
.three => 0x1B,
.four => 0x1C,
.five => 0x1D,
.six => 0x1E,
.seven => 0x1F,
.eight => 0x7F,
.nine => 0x39,
.backslash => 0x1C,
.left_bracket => 0x1B,
.right_bracket => 0x1D,
.a => 0x01,
.b => 0x02,
.c => 0x03,
.d => 0x04,
.e => 0x05,
.f => 0x06,
.g => 0x07,
.h => 0x08,
.i => 0x09,
.j => 0x0A,
.k => 0x0B,
.l => 0x0C,
.m => 0x0D,
.n => 0x0E,
.o => 0x0F,
.p => 0x10,
.q => 0x11,
.r => 0x12,
.s => 0x13,
.t => 0x14,
.u => 0x15,
.v => 0x16,
.w => 0x17,
.x => 0x18,
.y => 0x19,
.z => 0x1A,
else => 0,
};
};
if (char > 0) {
// Ask our IO thread to write the data
var data: termio.Message.WriteReq.Small.Array = undefined;
// Write our data. If we need to alt-prefix we add that first.
var i: u8 = 0;
if (alt) {
data[i] = 0x1B;
i += 1;
}
data[i] = @intCast(char);
i += 1;
_ = self.io_thread.mailbox.push(.{
.write_small = .{
.data = data,
.len = i,
},
}, .{ .forever = {} });
// After sending all our messages we have to notify our IO thread
try self.io_thread.wakeup.notify();
// Control charactesr trigger a scroll
{
self.renderer_state.mutex.lock();
defer self.renderer_state.mutex.unlock();
self.scrollToBottom() catch |err| {
log.warn("error scrolling to bottom err={}", .{err});
};
}
return true;
}
return false;

10
src/input/function_keys.zig
View File

@ -270,6 +270,16 @@ fn pcStyle(comptime fmt: []const u8) []const Entry {
}
test "keys" {
const testing = std.testing;
// Force resolution for comptime evaluation.
_ = keys;
// All key sequences must fit into a termio array.
const max = @import("../termio.zig").Message.WriteReq.Small.Max;
for (keys.values) |entries| {
for (entries) |entry| {
try testing.expect(entry.sequence.len <= max);
}
}
}